diff options
Diffstat (limited to 'src/3rdparty/libmng/libmng_pixels.c')
| -rw-r--r-- | src/3rdparty/libmng/libmng_pixels.c | 24610 |
1 files changed, 24610 insertions, 0 deletions
diff --git a/src/3rdparty/libmng/libmng_pixels.c b/src/3rdparty/libmng/libmng_pixels.c new file mode 100644 index 0000000000..ce5637be95 --- /dev/null +++ b/src/3rdparty/libmng/libmng_pixels.c @@ -0,0 +1,24610 @@ +/* ************************************************************************** */ +/* * For conditions of distribution and use, * */ +/* * see copyright notice in libmng.h * */ +/* ************************************************************************** */ +/* * * */ +/* * project : libmng * */ +/* * file : libmng_pixels.c copyright (c) 2000-2005 G.Juyn * */ +/* * version : 1.0.10 * */ +/* * * */ +/* * purpose : Pixel-row management routines (implementation) * */ +/* * * */ +/* * author : G.Juyn * */ +/* * * */ +/* * comment : implementation of the pixel-row management routines * */ +/* * * */ +/* * the dual alpha-composing for RGBA/BGRA/etc output-canvas' * */ +/* * is based on the Note on Compositing chapter of the * */ +/* * DOH-3 draft, noted to me by Adam M. Costello * */ +/* * * */ +/* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */ +/* * - changed strict-ANSI stuff * */ +/* * 0.5.1 - 05/11/2000 - G.Juyn * */ +/* * - added callback error-reporting support * */ +/* * 0.5.1 - 05/12/2000 - G.Juyn * */ +/* * - changed trace to macro for callback error-reporting * */ +/* * * */ +/* * 0.5.2 - 05/22/2000 - G.Juyn * */ +/* * - added JNG support * */ +/* * 0.5.2 - 05/30/2000 - G.Juyn * */ +/* * - fixed minor bugs 16-bit pixel-handling * */ +/* * - added delta-image row-processing routines * */ +/* * 0.5.2 - 06/02/2000 - G.Juyn * */ +/* * - fixed endian support (hopefully) * */ +/* * 0.5.2 - 06/03/2000 - G.Juyn * */ +/* * - fixed makeup for Linux gcc compile * */ +/* * 0.5.2 - 06/05/2000 - G.Juyn * */ +/* * - implemented app bkgd restore routines * */ +/* * - implemented RGBA8, ARGB8, BGRA8 & ABGR8 display routines * */ +/* * - added support for RGB8_A8 canvasstyle * */ +/* * 0.5.2 - 06/09/2000 - G.Juyn * */ +/* * - fixed alpha-handling for alpha canvasstyles * */ +/* * * */ +/* * 0.5.3 - 06/16/2000 - G.Juyn * */ +/* * - changed progressive-display processing * */ +/* * 0.5.3 - 06/17/2000 - G.Juyn * */ +/* * - changed to support delta-images * */ +/* * - optimized some store_xxx routines * */ +/* * 0.5.3 - 06/20/2000 - G.Juyn * */ +/* * - fixed nasty bug with embedded PNG after delta-image * */ +/* * 0.5.3 - 06/24/2000 - G.Juyn * */ +/* * - fixed problem with 16-bit GA format * */ +/* * 0.5.3 - 06/25/2000 - G.Juyn * */ +/* * - fixed problem with cheap transparency for 4-bit gray * */ +/* * - fixed display_xxxx routines for interlaced images * */ +/* * 0.5.3 - 06/28/2000 - G.Juyn * */ +/* * - fixed compiler-warning for non-initialized iB variable * */ +/* * * */ +/* * 0.9.1 - 07/05/2000 - G.Juyn * */ +/* * - fixed mandatory BACK color to be opaque * */ +/* * * */ +/* * 0.9.2 - 07/31/2000 - G.Juyn * */ +/* * - B110547 - fixed bug in interlace code * */ +/* * 0.9.2 - 08/05/2000 - G.Juyn * */ +/* * - changed file-prefixes * */ +/* * * */ +/* * 0.9.3 - 08/20/2000 - G.Juyn * */ +/* * - fixed app-supplied background restore * */ +/* * 0.9.3 - 08/26/2000 - G.Juyn * */ +/* * - added MAGN chunk * */ +/* * 0.9.3 - 09/07/2000 - G.Juyn * */ +/* * - added support for new filter_types * */ +/* * 0.9.3 - 09/30/2000 - G.Juyn * */ +/* * - fixed MAGN rounding errors (thanks Matthias!) * */ +/* * 0.9.3 - 10/10/2000 - G.Juyn * */ +/* * - fixed alpha-blending for RGBA canvasstyle * */ +/* * 0.9.3 - 10/11/2000 - G.Juyn * */ +/* * - fixed alpha-blending for other alpha-canvasstyles * */ +/* * 0.9.3 - 10/16/2000 - G.Juyn * */ +/* * - added optional support for bKGD for PNG images * */ +/* * - added support for JDAA * */ +/* * 0.9.3 - 10/17/2000 - G.Juyn * */ +/* * - fixed support for bKGD * */ +/* * 0.9.3 - 10/19/2000 - G.Juyn * */ +/* * - implemented delayed delta-processing * */ +/* * 0.9.3 - 10/28/2000 - G.Juyn * */ +/* * - fixed tRNS processing for gray-image < 8-bits * */ +/* * * */ +/* * 0.9.4 - 12/16/2000 - G.Juyn * */ +/* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */ +/* * 0.9.4 - 1/18/2001 - G.Juyn * */ +/* * - removed "old" MAGN methods 3 & 4 * */ +/* * - added "new" MAGN methods 3, 4 & 5 * */ +/* * - removed test filter-methods 1 & 65 * */ +/* * * */ +/* * 1.0.1 - 04/21/2001 - G.Juyn (code by G.Kelly) * */ +/* * - added BGRA8 canvas with premultiplied alpha * */ +/* * 1.0.1 - 04/25/2001 - G.Juyn * */ +/* * - moved mng_clear_cms to libmng_cms * */ +/* * * */ +/* * 1.0.2 - 06/25/2001 - G.Juyn * */ +/* * - added option to turn off progressive refresh * */ +/* * * */ +/* * 1.0.4 - 11/04/2001 - G.Juyn * */ +/* * - fixed possible compile-problem in cleanup_rowproc * */ +/* * 1.0.4 - 06/22/2002 - G.Juyn * */ +/* * - B558212 - off by one error * */ +/* * - MNG subimage alpha composite wrong for rgba8 images * */ +/* * * */ +/* * 1.0.5 - 08/07/2002 - G.Juyn * */ +/* * - added test-option for PNG filter method 193 (=no filter) * */ +/* * 1.0.5 - 08/15/2002 - G.Juyn * */ +/* * - completed PROM support * */ +/* * - completed delta-image support * */ +/* * 1.0.5 - 08/16/2002 - G.Juyn * */ +/* * - completed MAGN support (16-bit functions) * */ +/* * 1.0.5 - 08/19/2002 - G.Juyn * */ +/* * - B597134 - libmng pollutes the linker namespace * */ +/* * 1.0.5 - 09/19/2002 - G.Juyn * */ +/* * - optimized restore-background for bKGD cases * */ +/* * 1.0.5 - 09/20/2002 - G.Juyn * */ +/* * - finished support for BACK image & tiling * */ +/* * 1.0.5 - 09/22/2002 - G.Juyn * */ +/* * - added bgrx8 canvas (filler byte) * */ +/* * 1.0.5 - 09/23/2002 - G.Juyn * */ +/* * - added compose over/under routines for PAST processing * */ +/* * - added flip & tile routines for PAST processing * */ +/* * * */ +/* * 1.0.6 - 03/09/2003 - G.Juyn * */ +/* * - hiding 12-bit JPEG stuff * */ +/* * 1.0.6 - 05/11/2003 - Glenn RP * */ +/* * - added size-optimization COMPOSE routine usage * */ +/* * 1.0.6 - 05/11/2003 - G. Juyn * */ +/* * - added conditionals around canvas update routines * */ +/* * 1.0.6 - 05/25/2003 - Glenn RP * */ +/* * - added size-optimization DIV255B8 routine usage * */ +/* * 1.0.6 - 06/09/2003 - G. R-P * */ +/* * - added conditionals around 8-bit magn routines * */ +/* * 1.0.6 - 07/07/2003 - G. R-P * */ +/* * - removed conditionals around 8-bit magn routines * */ +/* * - added MNG_NO_16BIT_SUPPORT and MNG_NO_DELTA_PNG * */ +/* * conditionals * */ +/* * - reversed many loops to use decrementing counter * */ +/* * - combined init functions * */ +/* * - converted some switches to array references * */ +/* * 1.0.6 - 07/29/2003 - G.Juyn * */ +/* * - fixed duplicate for-loop * */ +/* * 1.0.6 - 07/29/2003 - G.R-P * */ +/* * - added SKIPCHUNK conditionals around PAST chunk support * */ +/* * - fixed "FOOTPRINT_COMPOSEIV" typo (now "FOOTPRINT_DIV") * */ +/* * 1.0.6 - 08/17/2003 - G.R-P * */ +/* * - added more conditionals around "promote" functions * */ +/* * * */ +/* * 1.0.7 - 11/27/2003 - R.A * */ +/* * - added CANVAS_RGB565 and CANVAS_BGR565 * */ +/* * 1.0.7 - 12/06/2003 - R.A * */ +/* * - added CANVAS_RGBA565 and CANVAS_BGRA565 * */ +/* * 1.0.7 - 01/25/2004 - J.S * */ +/* * - added premultiplied alpha canvas' for RGBA, ARGB, ABGR * */ +/* * 1.0.7 - 03/08/2004 - G.R-P * */ +/* * - added more conditionals around 16-bit-supporting code * */ +/* * 1.0.7 - 03/09/2004 - G.Juyn * */ +/* * - fixed bug in promote_g8_g8 with 16bit support off * */ +/* * 1.0.7 - 03/09/2004 - G.R-P * */ +/* * - more optimizations with 16bit support off * */ +/* * 1.0.7 - 03/10/2004 - G.Juyn * */ +/* * - fixed some warnings for 16bit optimizations * */ +/* * 1.0.7 - 03/21/2004 - G.Juyn * */ +/* * - fixed some 64-bit platform compiler warnings * */ +/* * * */ +/* * 1.0.8 - 06/20/2004 - G.Juyn * */ +/* * - some speed optimizations (thanks to John Stiles) * */ +/* * 1.0.8 - 08/01/2004 - G.Juyn * */ +/* * - added support for 3+byte pixelsize for JPEG's * */ +/* * * */ +/* * 1.0.9 - 10/10/2004 - G.R-P. * */ +/* * - added MNG_NO_1_2_4BIT_SUPPORT * */ +/* * 1.0.9 - 10/14/2004 - G.Juyn * */ +/* * - added bgr565_a8 canvas-style (thanks to J. Elvander) * */ +/* * 1.0.9 - 12/05/2004 - G.Juyn * */ +/* * - added LITTLEENDIAN/BIGENDIAN fixtures (thanks J.Stiles) * */ +/* * - fixed MNG_NO_1_2_4BIT_SUPPORT for TBBN1G04.PNG * */ +/* * 1.0.9 - 12/31/2004 - G.R-P. * */ +/* * - fixed warnings about C++ style (//) comments * */ +/* * * */ +/* * 1.0.10 - 07/06/2005 - G.R-P. * */ +/* * - added MORE MNG_NO_1_2_4BIT_SUPPORT * */ +/* * 1.0.10 - 10/06/2005 - G.R-P. * */ +/* * - alloc more memory for MNG_NO_1_2_4BIT_SUPPORT * */ +/* * 1.0.10 - 12/07/2005 - G.R-P. * */ +/* * - optimized footprint of 16bit support * */ +/* * 1.0.10 - 03/07/2006 - (thanks to W. Manthey) * */ +/* * - added CANVAS_RGB555 and CANVAS_BGR555 * */ +/* * * */ +/* ************************************************************************** */ + +#include "libmng.h" +#include "libmng_data.h" +#include "libmng_error.h" +#include "libmng_trace.h" +#ifdef __BORLANDC__ +#pragma hdrstop +#endif +#include "libmng_objects.h" +#include "libmng_object_prc.h" +#include "libmng_memory.h" +#include "libmng_cms.h" +#include "libmng_filter.h" +#include "libmng_pixels.h" + +#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) +#pragma option -A /* force ANSI-C */ +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_DISPLAY_PROCS + +/* TODO: magnification & canvas-positioning/-clipping */ + +/* TODO: major optimization of pixel-loops by using assembler (?) */ + +/* ************************************************************************** */ +/* * * */ +/* * Interlace tables * */ +/* * * */ +/* ************************************************************************** */ + +MNG_LOCAL mng_uint32 const interlace_row [7] = { 0, 0, 4, 0, 2, 0, 1 }; +MNG_LOCAL mng_uint32 const interlace_rowskip [7] = { 8, 8, 8, 4, 4, 2, 2 }; +MNG_LOCAL mng_uint32 const interlace_col [7] = { 0, 4, 0, 2, 0, 1, 0 }; +MNG_LOCAL mng_uint32 const interlace_colskip [7] = { 8, 8, 4, 4, 2, 2, 1 }; +MNG_LOCAL mng_uint32 const interlace_roundoff [7] = { 7, 7, 3, 3, 1, 1, 0 }; +MNG_LOCAL mng_uint32 const interlace_divider [7] = { 3, 3, 2, 2, 1, 1, 0 }; + +/* ************************************************************************** */ +/* * * */ +/* * Alpha composing macros * */ +/* * the code below is slightly modified from the libpng package * */ +/* * the original was last optimized by Greg Roelofs & Mark Adler * */ +/* * * */ +/* ************************************************************************** */ + +#define MNG_COMPOSE8(RET,FG,ALPHA,BG) { \ + mng_uint16 iH = (mng_uint16)((mng_uint16)(FG) * (mng_uint16)(ALPHA) \ + + (mng_uint16)(BG)*(mng_uint16)(255 - \ + (mng_uint16)(ALPHA)) + (mng_uint16)128); \ + (RET) = (mng_uint8)((iH + (iH >> 8)) >> 8); } + +#define MNG_COMPOSE16(RET,FG,ALPHA,BG) { \ + mng_uint32 iH = (mng_uint32)((mng_uint32)(FG) * (mng_uint32)(ALPHA) \ + + (mng_uint32)(BG)*(mng_uint32)(65535L - \ + (mng_uint32)(ALPHA)) + (mng_uint32)32768L); \ + (RET) = (mng_uint16)((iH + (iH >> 16)) >> 16); } + +/* ************************************************************************** */ +/* * * */ +/* * Alpha blending macros * */ +/* * this code is based on Adam Costello's "Note on Compositing" from the * */ +/* * mng-list which gives the following formula: * */ +/* * * */ +/* * top pixel = (Rt, Gt, Bt, At) * */ +/* * bottom pixel = (Rb, Gb, Bb, Ab) * */ +/* * composite pixel = (Rc, Gc, Bc, Ac) * */ +/* * * */ +/* * all values in the range 0..1 * */ +/* * * */ +/* * Ac = 1 - (1 - At)(1 - Ab) * */ +/* * s = At / Ac * */ +/* * t = (1 - At) Ab / Ac * */ +/* * Rc = s Rt + t Rb * */ +/* * Gc = s Gt + t Gb * */ +/* * Bc = s Bt + t Bb * */ +/* * * */ +/* * (I just hope I coded it correctly in integer arithmetic...) * */ +/* * * */ +/* ************************************************************************** */ + +#define MNG_BLEND8(RT, GT, BT, AT, RB, GB, BB, AB, RC, GC, BC, AC) { \ + mng_uint32 S, T; \ + (AC) = (mng_uint8)((mng_uint32)255 - \ + ((((mng_uint32)255 - (mng_uint32)(AT)) * \ + ((mng_uint32)255 - (mng_uint32)(AB)) ) >> 8)); \ + S = (mng_uint32)(((mng_uint32)(AT) << 8) / \ + (mng_uint32)(AC)); \ + T = (mng_uint32)(((mng_uint32)255 - (mng_uint32)(AT)) * \ + (mng_uint32)(AB) / (mng_uint32)(AC)); \ + (RC) = (mng_uint8)((S * (mng_uint32)(RT) + \ + T * (mng_uint32)(RB) + (mng_uint32)127) >> 8); \ + (GC) = (mng_uint8)((S * (mng_uint32)(GT) + \ + T * (mng_uint32)(GB) + (mng_uint32)127) >> 8); \ + (BC) = (mng_uint8)((S * (mng_uint32)(BT) + \ + T * (mng_uint32)(BB) + (mng_uint32)127) >> 8); } + +#define MNG_BLEND16(RT, GT, BT, AT, RB, GB, BB, AB, RC, GC, BC, AC) { \ + mng_uint32 S, T; \ + (AC) = (mng_uint16)((mng_uint32)65535 - \ + ((((mng_uint32)65535 - (mng_uint32)(AT)) * \ + ((mng_uint32)65535 - (mng_uint32)(AB)) ) >> 16)); \ + S = (mng_uint32)(((mng_uint32)(AT) << 16) / \ + (mng_uint32)(AC)); \ + T = (mng_uint32)(((mng_uint32)65535 - (mng_uint32)(AT)) * \ + (mng_uint32)(AB) / (mng_uint32)(AC)); \ + (RC) = (mng_uint16)((S * (mng_uint32)(RT) + \ + T * (mng_uint32)(RB) + (mng_uint32)32767) >> 16); \ + (GC) = (mng_uint16)((S * (mng_uint32)(GT) + \ + T * (mng_uint32)(GB) + (mng_uint32)32767) >> 16); \ + (BC) = (mng_uint16)((S * (mng_uint32)(BT) + \ + T * (mng_uint32)(BB) + (mng_uint32)32767) >> 16); } + +/* ************************************************************************** */ + +/* note a good optimizing compiler will optimize this */ +#define DIV255B8(x) (mng_uint8)(((x) + 127) / 255) +#define DIV255B16(x) (mng_uint16)(((x) + 32767) / 65535) + +/* ************************************************************************** */ +/* * * */ +/* * Progressive display check - checks to see if progressive display is * */ +/* * in order & indicates so * */ +/* * * */ +/* * The routine is called after a call to one of the display_xxx routines * */ +/* * if appropriate * */ +/* * * */ +/* * The refresh is warrented in the read_chunk routine (mng_read.c) * */ +/* * and only during read&display processing, since there's not much point * */ +/* * doing it from memory! * */ +/* * * */ +/* ************************************************************************** */ + +mng_retcode mng_display_progressive_check (mng_datap pData) +{ + if ((pData->bDoProgressive) && /* need progressive display? */ + ((pData->eImagetype != mng_it_mng) || (pData->iDataheight > 300)) && + (pData->iDestb - pData->iDestt > 50) && (!pData->pCurraniobj)) + { + mng_int32 iC = pData->iRow + pData->iDestt - pData->iSourcet; + + if (iC % 20 == 0) /* every 20th line */ + pData->bNeedrefresh = MNG_TRUE; + + } + + return MNG_NOERROR; +} + +/* ************************************************************************** */ +/* * * */ +/* * Display routines - convert rowdata (which is already color-corrected) * */ +/* * to the output canvas, respecting the opacity information * */ +/* * * */ +/* ************************************************************************** */ + +MNG_LOCAL void check_update_region (mng_datap pData) +{ /* determine actual canvas row */ + mng_int32 iRow = pData->iRow + pData->iDestt - pData->iSourcet; + /* check for change in update-region */ + if ((pData->iDestl < (mng_int32)pData->iUpdateleft) || (pData->iUpdateright == 0)) + pData->iUpdateleft = pData->iDestl; + + if (pData->iDestr > (mng_int32)pData->iUpdateright) + pData->iUpdateright = pData->iDestr; + + if ((iRow < (mng_int32)pData->iUpdatetop) || (pData->iUpdatebottom == 0)) + pData->iUpdatetop = iRow; + + if (iRow+1 > (mng_int32)pData->iUpdatebottom) + pData->iUpdatebottom = iRow+1; + + return; +} + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGB8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_rgb8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*pScanline ); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*(pScanline+2)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iFGr16 >> 8); + *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGb16 >> 8); + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + } + else + { /* do alpha composing */ + MNG_COMPOSE8 (*pScanline, *pDataline, iA8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iA8, *(pScanline+2)); + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_rgb8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGg16; + mng_uint16 iBGg16; + mng_uint8 iA8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+iBps); + *(pScanline+2) = *(pDataline+2*iBps); + + pScanline += (pData->iColinc * 3); + pDataline += 4*iBps; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + } + else + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+i)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + /* and return the composed values */ + *(pScanline+i) = (mng_uint8)(iFGg16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + } + else + { /* do alpha composing */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+i), iA8, *(pScanline+i)); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_rgb8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + } + else + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+i), iA8, *(pScanline+i)); + } +#else + MNG_COMPOSE8 (*pScanline, *pDataline, iA8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iA8, *(pScanline+2)); +#endif + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_RGB8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGBA8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_rgba8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + *(pScanline+3) = *(pDataline+6); + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+3); + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+3)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + *(pScanline+3) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*pScanline ); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*(pScanline+2)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iFGr16 >> 8); + *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGb16 >> 8); + /* alpha remains fully opaque !!! */ + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*pScanline ); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*(pScanline+2)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCr16 >> 8); + *(pScanline+1) = (mng_uint8)(iCg16 >> 8); + *(pScanline+2) = (mng_uint8)(iCb16 >> 8); + *(pScanline+3) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+3); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (*pScanline, *pDataline, iFGa8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iFGa8, *(pScanline+2)); + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCr8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCb8; + *(pScanline+3) = iCa8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_rgba8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGg16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+iBps); + *(pScanline+2) = *(pDataline+2*iBps); + *(pScanline+3) = *(pDataline+3*iBps); + + pScanline += (pData->iColinc << 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+3)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + *(pScanline+3) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+i)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + /* and return the composed values */ + *(pScanline+i) = (mng_uint8)(iFGg16 >> 8); + /* alpha remains fully opaque !!! */ + } + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*pScanline ); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*(pScanline+2)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCr16 >> 8); + *(pScanline+1) = (mng_uint8)(iCg16 >> 8); + *(pScanline+2) = (mng_uint8)(iCb16 >> 8); + *(pScanline+3) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+3); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+i), iFGa8, *(pScanline+i)); + } + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCr8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCb8; + *(pScanline+3) = iCa8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_rgba8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+3); + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+3); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+i), iFGa8, *(pScanline+i)); + } +#else + MNG_COMPOSE8 (*pScanline, *pDataline, iFGa8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iFGa8, *(pScanline+2)); +#endif + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCr8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCb8; + *(pScanline+3) = iCa8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_RGBA8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGBA8_PM +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_rgba8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8_PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[4]; + pScanline[3] = 255; + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[4-i-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[0]); + pScanline[1] = DIV255B8(s * pDataline[2]); + pScanline[2] = DIV255B8(s * pDataline[4]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { +#ifdef MNG_BIGENDIAN_SUPPORTED + *(mng_uint32*)pScanline = (*(mng_uint32*)pDataline) | 0x000000FF; +#else + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[2]; + pScanline[3] = 255; +#endif + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[2-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[0]); + pScanline[1] = DIV255B8(s * pDataline[1]); + pScanline[2] = DIV255B8(s * pDataline[2]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[4]; + pScanline[3] = 255; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[2-i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[0] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[4] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ +#ifdef MNG_BIGENDIAN_SUPPORTED + *(mng_uint32*)pScanline = (*(mng_uint32*)pDataline) | 0x000000FF; +#else + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[2]; + pScanline[3] = 255; +#endif + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[2-i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[0] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[1] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[2] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_rgba8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8_PM, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[4]; + pScanline[3] = 255; + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[4-i-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[0]); + pScanline[1] = DIV255B8(s * pDataline[2]); + pScanline[2] = DIV255B8(s * pDataline[4]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { +#ifdef MNG_BIGENDIAN_SUPPORTED + *(mng_uint32*)pScanline = (*(mng_uint32*)pDataline) | 0x000000FF; +#else + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[2]; + pScanline[3] = 255; +#endif + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[2-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[0]); + pScanline[1] = DIV255B8(s * pDataline[1]); + pScanline[2] = DIV255B8(s * pDataline[2]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[4]; + pScanline[3] = 255; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[2-i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[0] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[4] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ +#ifdef MNG_BIGENDIAN_SUPPORTED + *(mng_uint32*)pScanline = (*(mng_uint32*)pDataline) | 0x000000FF; +#else + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[2]; + pScanline[3] = 255; +#endif + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[2-i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[0] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[1] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[2] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_rgba8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8_PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { +#ifdef MNG_BIGENDIAN_SUPPORTED + *(mng_uint32*)pScanline = (*(mng_uint32*)pDataline) | 0x000000FF; +#else + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[2]; + pScanline[3] = 255; +#endif + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[2-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[0]); + pScanline[1] = DIV255B8(s * pDataline[1]); + pScanline[2] = DIV255B8(s * pDataline[2]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ +#ifdef MNG_BIGENDIAN_SUPPORTED + *(mng_uint32*)pScanline = (*(mng_uint32*)pDataline) | 0x000000FF; +#else + pScanline[0] = pDataline[0]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[2]; + pScanline[3] = 255; +#endif + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[2-i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[2-i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[0] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[1] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[2] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_RGBA8_PM */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_ARGB8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_argb8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_START); +#endif + + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+6); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+4); + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *(pDataline+2); + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pScanline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *(pDataline+6); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+4); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+1)); + iBGg16 = (mng_uint16)(*(pScanline+2)); + iBGb16 = (mng_uint16)(*(pScanline+3)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + /* alpha remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8)(iFGr16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+3) = (mng_uint8)(iFGb16 >> 8); + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+1)); + iBGg16 = (mng_uint16)(*(pScanline+2)); + iBGb16 = (mng_uint16)(*(pScanline+3)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCa16 >> 8); + *(pScanline+1) = (mng_uint8)(iCr16 >> 8); + *(pScanline+2) = (mng_uint8)(iCg16 >> 8); + *(pScanline+3) = (mng_uint8)(iCb16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pScanline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *(pDataline+2); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do simple alpha composing */ + /* alpha itself remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+1), *(pScanline+2), *(pScanline+3), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCa8; + *(pScanline+1) = iCr8; + *(pScanline+2) = iCg8; + *(pScanline+3) = iCb8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_argb8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGg16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+3*iBps); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+iBps); + *(pScanline+3) = *(pDataline+2*iBps); + + pScanline += (pData->iColinc << 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pScanline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *(pDataline+6); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *(pDataline+4); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+i+1)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + /* and return the composed values */ + /* alpha remains fully opaque !!! */ + *(pScanline+i+1) = (mng_uint8)(iFGg16 >> 8); + } + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+1)); + iBGg16 = (mng_uint16)(*(pScanline+2)); + iBGb16 = (mng_uint16)(*(pScanline+3)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCa16 >> 8); + *(pScanline+1) = (mng_uint8)(iCr16 >> 8); + *(pScanline+2) = (mng_uint8)(iCg16 >> 8); + *(pScanline+3) = (mng_uint8)(iCb16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pScanline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *(pDataline+2); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do simple alpha composing */ + /* alpha itself remains fully opaque !!! */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i+1), *(pDataline+i), iFGa8, *(pScanline+i+1)); + } + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+1), *(pScanline+2), *(pScanline+3), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCa8; + *(pScanline+1) = iCr8; + *(pScanline+2) = iCg8; + *(pScanline+3) = iCb8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_argb8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_START); +#endif + + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *(pDataline+2); + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pScanline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *pDataline; + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *(pDataline+2); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do simple alpha composing */ + /* alpha itself remains fully opaque !!! */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i+1), *(pDataline+i), iFGa8, *(pScanline+i+1)); + } +#else + MNG_COMPOSE8 (*(pScanline+1), *pDataline, iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+1), iFGa8, *(pScanline+2)); + MNG_COMPOSE8 (*(pScanline+3), *(pDataline+2), iFGa8, *(pScanline+3)); +#endif + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+1), *(pScanline+2), *(pScanline+3), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCa8; + *(pScanline+1) = iCr8; + *(pScanline+2) = iCg8; + *(pScanline+3) = iCb8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_ARGB8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_ARGB8_PM +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_argb8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8_PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[4]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[4-i-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0]); + pScanline[2] = DIV255B8(s * pDataline[2]); + pScanline[3] = DIV255B8(s * pDataline[4]); +#endif + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[2]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[2-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0]); + pScanline[2] = DIV255B8(s * pDataline[1]); + pScanline[3] = DIV255B8(s * pDataline[2]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[4]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[3-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[2] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[4] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[2]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[3-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[1] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[2] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_argb8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8_PM, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[4]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[4-i-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0]); + pScanline[2] = DIV255B8(s * pDataline[2]); + pScanline[3] = DIV255B8(s * pDataline[4]); +#endif + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[2]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[2-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0]); + pScanline[2] = DIV255B8(s * pDataline[1]); + pScanline[3] = DIV255B8(s * pDataline[2]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[4]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[3-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[2] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[4] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[2]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[3-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[1] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[2] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_argb8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8_PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[2]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[2-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0]); + pScanline[2] = DIV255B8(s * pDataline[1]); + pScanline[3] = DIV255B8(s * pDataline[2]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = 255; + pScanline[1] = pDataline[0]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[2]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[3-i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[3-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[0] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[1] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[2] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_ARGB8_PM */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGB8_A8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_rgb8_a8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pAlphaline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination rows */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + pAlphaline = (mng_uint8p)pData->fGetalphaline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination rows starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pAlphaline = pAlphaline + pData->iCol + pData->iDestl; + + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + *pAlphaline = *(pDataline+6); + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *pAlphaline = *(pDataline+3); + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pAlphaline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + *pAlphaline = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*pScanline ); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*(pScanline+2)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iFGr16 >> 8); + *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGb16 >> 8); + /* alpha remains fully opaque !!! */ + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*pScanline ); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*(pScanline+2)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCr16 >> 8); + *(pScanline+1) = (mng_uint8)(iCg16 >> 8); + *(pScanline+2) = (mng_uint8)(iCb16 >> 8); + *pAlphaline = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pAlphaline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *pAlphaline = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (*pScanline, *pDataline, iFGa8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iFGa8, *(pScanline+2)); + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCr8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCb8; + *pAlphaline = iCa8; + } + } + } + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_rgb8_a8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pAlphaline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGg16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination rows */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + pAlphaline = (mng_uint8p)pData->fGetalphaline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination rows starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pAlphaline = pAlphaline + pData->iCol + pData->iDestl; + + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+iBps); + *(pScanline+2) = *(pDataline+2*iBps); + *pAlphaline = *(pDataline+3*iBps); + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pAlphaline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+4); + *pAlphaline = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+i)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + /* and return the composed values */ + *(pScanline+i) = (mng_uint8)(iFGg16 >> 8); + /* alpha remains fully opaque !!! */ + } + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*pScanline ); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*(pScanline+2)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCr16 >> 8); + *(pScanline+1) = (mng_uint8)(iCg16 >> 8); + *(pScanline+2) = (mng_uint8)(iCb16 >> 8); + *pAlphaline = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pAlphaline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *pAlphaline = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+i), iFGa8, *(pScanline+i)); + } + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCr8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCb8; + *pAlphaline = iCa8; + } + } + } + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_rgb8_a8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pAlphaline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination rows */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + pAlphaline = (mng_uint8p)pData->fGetalphaline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination rows starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pAlphaline = pAlphaline + pData->iCol + pData->iDestl; + + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *pAlphaline = *(pDataline+3); + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pAlphaline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *pDataline; + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *(pDataline+2); + *pAlphaline = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+i), iFGa8, *(pScanline+i)); + } +#else + MNG_COMPOSE8 (*pScanline, *pDataline, iFGa8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iFGa8, *(pScanline+2)); +#endif + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCr8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCb8; + *pAlphaline = iCa8; + } + } + } + + pScanline += (pData->iColinc * 3); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_RGB8_A8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGR8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgr8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 8; + else + pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 4; + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha value */ + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+2)); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*pScanline ); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iFGb16 >> 8); + *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGr16 >> 8); + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + } + else + { /* do alpha composing */ + MNG_COMPOSE8 (*pScanline, *(pDataline+2), iA8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *pDataline, iA8, *(pScanline+2)); + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgr8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGg16; + mng_uint16 iBGg16; + mng_uint8 iA8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+2*iBps); + *(pScanline+1) = *(pDataline+iBps); + *(pScanline+2) = *pDataline; + + pScanline += (pData->iColinc * 3); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha value */ + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + } + else + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+2-i)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + /* and return the composed values */ + *(pScanline+2-i) = (mng_uint8)(iFGg16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + } + else + { /* do alpha composing */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+2-i), iA8, *(pScanline+i)); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgr8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 4; + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + } + else + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+2-i), iA8, *(pScanline+i)); + } +#else + MNG_COMPOSE8 (*pScanline, *(pDataline+2), iA8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *pDataline, iA8, *(pScanline+2)); +#endif + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGR8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGRX8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgrx8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRX8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 8; + else + pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 4; + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha value */ + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+2)); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*pScanline ); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iFGb16 >> 8); + *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGr16 >> 8); + *(pScanline+3) = 0xFF; /* filler byte */ + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + } + else + { /* do alpha composing */ + MNG_COMPOSE8 (*pScanline, *(pDataline+2), iA8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *pDataline, iA8, *(pScanline+2)); + *(pScanline+3) = 0xFF; /* filler byte */ + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRX8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgrx8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGg16; + mng_uint16 iBGg16; + mng_uint8 iA8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRX8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+2*iBps); + *(pScanline+1) = *(pDataline+iBps); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + + pScanline += (pData->iColinc << 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha value */ + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + } + else + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+2-i)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + /* and return the composed values */ + *(pScanline+2-i) = (mng_uint8)(iFGg16 >> 8); + } + *(pScanline+3) = 0xFF; /* filler byte */ + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + } + else + { /* do alpha composing */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+2-i), iA8, *(pScanline+i)); + } + *(pScanline+3) = 0xFF; /* filler byte */ + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRX8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgrx8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRX8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 4; + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = 0xFF; /* filler byte */ + } + else + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+2-i), iA8, *(pScanline+i)); + } +#else + MNG_COMPOSE8 (*pScanline, *(pDataline+2), iA8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *pDataline, iA8, *(pScanline+2)); +#endif + *(pScanline+3) = 0xFF; /* filler byte */ + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRX8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGRX8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGRA8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgra8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+6); + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+3); + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+3)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+2)); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*pScanline ); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iFGb16 >> 8); + *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGr16 >> 8); + /* alpha remains fully opaque !!! */ + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+2)); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*pScanline ); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCb16 >> 8); + *(pScanline+1) = (mng_uint8)(iCg16 >> 8); + *(pScanline+2) = (mng_uint8)(iCr16 >> 8); + *(pScanline+3) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+3); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (*pScanline, *(pDataline+2), iFGa8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *pDataline, iFGa8, *(pScanline+2)); + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+2), *(pScanline+1), *pScanline, iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCb8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCr8; + *(pScanline+3) = iCa8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgra8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGg16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+2*iBps); + *(pScanline+1) = *(pDataline+iBps); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+3*iBps); + + pScanline += (pData->iColinc << 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+3)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *(pDataline+4); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+2-i)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + /* and return the composed values */ + *(pScanline+2-i) = (mng_uint8)(iFGg16 >> 8); + /* alpha remains fully opaque !!! */ + } + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+2)); + iBGg16 = (mng_uint16)(*(pScanline+1)); + iBGb16 = (mng_uint16)(*pScanline ); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCb16 >> 8); + *(pScanline+1) = (mng_uint8)(iCg16 >> 8); + *(pScanline+2) = (mng_uint8)(iCr16 >> 8); + *(pScanline+3) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+3); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+2-i), iFGa8, *(pScanline+i)); + } + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+2), *(pScanline+1), *pScanline, iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCb8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCr8; + *(pScanline+3) = iCa8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgra8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+3); + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+3); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+2); + *(pScanline+1) = *(pDataline+1); + *(pScanline+2) = *pDataline; + *(pScanline+3) = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i), *(pDataline+2-i), iFGa8, *(pScanline+i)); + } +#else + MNG_COMPOSE8 (*pScanline, *(pDataline+2), iFGa8, *pScanline ); + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *pDataline, iFGa8, *(pScanline+2)); +#endif + /* alpha remains fully opaque !!! */ + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+2), *(pScanline+1), *pScanline, iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCb8; + *(pScanline+1) = iCg8; + *(pScanline+2) = iCr8; + *(pScanline+3) = iCa8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGRA8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGRA8_PM +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgra8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = pDataline[4]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { + pScanline[0] = DIV255B8(s * pDataline[4]); + pScanline[1] = DIV255B8(s * pDataline[2]); + pScanline[2] = DIV255B8(s * pDataline[0]); + pScanline[3] = (mng_uint8)s; + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = pDataline[2]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { + pScanline[0] = DIV255B8(s * pDataline[2]); + pScanline[1] = DIV255B8(s * pDataline[1]); + pScanline[2] = DIV255B8(s * pDataline[0]); + pScanline[3] = (mng_uint8)s; + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = pDataline[4]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[4] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[0] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = pDataline[2]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[2] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[1] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[0] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgra8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = pDataline[4]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[4-i-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[4]); + pScanline[1] = DIV255B8(s * pDataline[2]); + pScanline[2] = DIV255B8(s * pDataline[0]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = pDataline[2]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[2-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[2]); + pScanline[1] = DIV255B8(s * pDataline[1]); + pScanline[2] = DIV255B8(s * pDataline[0]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = pDataline[4]; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[4] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[0] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = pDataline[2]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[2] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[1] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[0] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgra8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = pDataline[2]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[2-i]); + } +#else + pScanline[0] = DIV255B8(s * pDataline[2]); + pScanline[1] = DIV255B8(s * pDataline[1]); + pScanline[2] = DIV255B8(s * pDataline[0]); +#endif + pScanline[3] = (mng_uint8)s; + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = pDataline[2]; + pScanline[1] = pDataline[1]; + pScanline[2] = pDataline[0]; + pScanline[3] = 255; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i] = DIV255B8(s * pDataline[2-i] + t * + pScanline[i]); + } + } +#else + pScanline[0] = DIV255B8(s * pDataline[2] + t * pScanline[0]); + pScanline[1] = DIV255B8(s * pDataline[1] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[0] + t * pScanline[2]); +#endif + pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGRA8_PM */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_ABGR8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_abgr8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+6); + *(pScanline+1) = *(pDataline+4); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *pDataline; + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *pDataline; + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pScanline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *(pDataline+6); + *(pScanline+1) = *(pDataline+4); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *pDataline; + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+3)); + iBGg16 = (mng_uint16)(*(pScanline+2)); + iBGb16 = (mng_uint16)(*(pScanline+1)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + /* alpha itself remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8)(iFGb16 >> 8); + *(pScanline+2) = (mng_uint8)(iFGg16 >> 8); + *(pScanline+3) = (mng_uint8)(iFGr16 >> 8); + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+3)); + iBGg16 = (mng_uint16)(*(pScanline+2)); + iBGb16 = (mng_uint16)(*(pScanline+1)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCa16 >> 8); + *(pScanline+1) = (mng_uint8)(iCb16 >> 8); + *(pScanline+2) = (mng_uint8)(iCg16 >> 8); + *(pScanline+3) = (mng_uint8)(iCr16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pScanline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *pDataline; + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do simple alpha composing */ + /* alpha itself remains fully opaque !!! */ + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+2), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+1), iFGa8, *(pScanline+2)); + MNG_COMPOSE8 (*(pScanline+3), *pDataline, iFGa8, *(pScanline+3)); + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+3), *(pScanline+2), *(pScanline+1), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCa8; + *(pScanline+1) = iCb8; + *(pScanline+2) = iCg8; + *(pScanline+3) = iCr8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_abgr8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGg16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *pScanline = *(pDataline+3*iBps); + *(pScanline+1) = *(pDataline+2*iBps); + *(pScanline+2) = *(pDataline+iBps); + *(pScanline+3) = *pDataline; + + pScanline += (pData->iColinc << 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pScanline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *pScanline = *(pDataline+6); + *(pScanline+1) = *(pDataline+4); + *(pScanline+2) = *(pDataline+2); + *(pScanline+3) = *pDataline; + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + int i; + for (i=2; i >= 0; i--) + { + iFGg16 = mng_get_uint16 (pDataline+i+i); + /* scale background up */ + iBGg16 = (mng_uint16)(*(pScanline+3-i)); + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + /* now compose */ + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + /* and return the composed values */ + /* alpha itself remains fully opaque !!! */ + *(pScanline+3-i) = (mng_uint8)(iFGg16 >> 8); + } + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)(*(pScanline+3)); + iBGg16 = (mng_uint16)(*(pScanline+2)); + iBGb16 = (mng_uint16)(*(pScanline+1)); + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *pScanline = (mng_uint8)(iCa16 >> 8); + *(pScanline+1) = (mng_uint8)(iCb16 >> 8); + *(pScanline+2) = (mng_uint8)(iCg16 >> 8); + *(pScanline+3) = (mng_uint8)(iCr16 >> 8); + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pScanline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *pDataline; + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do simple alpha composing */ + /* alpha itself remains fully opaque !!! */ + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i+1), *(pDataline+2-i), iFGa8, *(pScanline+i+1)); + } + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+3), *(pScanline+2), *(pScanline+1), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCa8; + *(pScanline+1) = iCb8; + *(pScanline+2) = iCg8; + *(pScanline+3) = iCr8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_abgr8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *pDataline; + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *pScanline; + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pScanline = *(pDataline+3); + *(pScanline+1) = *(pDataline+2); + *(pScanline+2) = *(pDataline+1); + *(pScanline+3) = *pDataline; + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do simple alpha composing */ + /* alpha itself remains fully opaque !!! */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pScanline+i+1), *(pDataline+2-i), iFGa8, *(pScanline+i+1)); + } +#else + MNG_COMPOSE8 (*(pScanline+1), *(pDataline+2), iFGa8, *(pScanline+1)); + MNG_COMPOSE8 (*(pScanline+2), *(pDataline+1), iFGa8, *(pScanline+2)); + MNG_COMPOSE8 (*(pScanline+3), *pDataline, iFGa8, *(pScanline+3)); +#endif + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + *(pScanline+3), *(pScanline+2), *(pScanline+1), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pScanline = iCa8; + *(pScanline+1) = iCb8; + *(pScanline+2) = iCg8; + *(pScanline+3) = iCr8; + } + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_ABGR8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_ABGR8_PM +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_abgr8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8_PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[4]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[0]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[4-i-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[4]); + pScanline[2] = DIV255B8(s * pDataline[2]); + pScanline[3] = DIV255B8(s * pDataline[0]); +#endif + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[0]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[2-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[2]); + pScanline[2] = DIV255B8(s * pDataline[1]); + pScanline[3] = DIV255B8(s * pDataline[0]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = 255; + pScanline[1] = pDataline[4]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[0]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[i+1]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[4] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[2] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[0] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = 255; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[0]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[2-i] + t * + pScanline[i+1]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[1] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[0] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_abgr8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8_PM, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + if ((s = pDataline[6]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[4]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[0]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[4-i-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[4]); + pScanline[2] = DIV255B8(s * pDataline[2]); + pScanline[3] = DIV255B8(s * pDataline[0]); +#endif + } + } + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[0]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[2-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[2]); + pScanline[2] = DIV255B8(s * pDataline[1]); + pScanline[3] = DIV255B8(s * pDataline[0]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + if ((s = pDataline[6]) != 0) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if (s == 255) + { /* plain copy it */ + pScanline[0] = 255; + pScanline[1] = pDataline[4]; + pScanline[2] = pDataline[2]; + pScanline[3] = pDataline[0]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[4-i-i] + t * + pScanline[i+1]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[4] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[2] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[0] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = 255; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[0]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[2-i] + t * + pScanline[i+1]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[1] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[0] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_abgr8_pm (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint32 s, t; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8_PM, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values and premultiply */ + if ((s = pDataline[3]) == 0) + *(mng_uint32*) pScanline = 0; /* set all components = 0 */ + else + { + if (s == 255) + { + pScanline[0] = 255; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[0]; + } + else + { + pScanline[0] = (mng_uint8)s; +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[2-i]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[2]); + pScanline[2] = DIV255B8(s * pDataline[1]); + pScanline[3] = DIV255B8(s * pDataline[0]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + if ((s = pDataline[3]) != 0) /* any opacity at all ? */ + { /* fully opaque ? */ + if (s == 255) + { /* then simply copy the values */ + pScanline[0] = 255; + pScanline[1] = pDataline[2]; + pScanline[2] = pDataline[1]; + pScanline[3] = pDataline[0]; + } + else + { /* now blend (premultiplied) */ + t = 255 - s; + pScanline[0] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[0]))); +#ifdef MNG_OPTIMIZE_FOOTPRINT_DIV + { + int i; + for (i=2; i >= 0; i--) + { + pScanline[i+1] = DIV255B8(s * pDataline[2-i] + t * + pScanline[i+1]); + } + } +#else + pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); + pScanline[2] = DIV255B8(s * pDataline[1] + t * pScanline[2]); + pScanline[3] = DIV255B8(s * pDataline[0] + t * pScanline[3]); +#endif + } + } + + pScanline += (pData->iColinc << 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8_PM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_ABGR8_PM */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGR565 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgr565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ( (*(pDataline+2)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline+4)) >>3) | ( (*(pDataline+2)&0xFC) << 3) ); + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ( (*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >>3 ) | ( (*(pDataline+1)&0xFC ) << 3) ); + + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( (*(pDataline))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline+4)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGr16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGb16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + MNG_COMPOSE8 (iRed, *pDataline, iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgr565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | + ( (*(pDataline+iBps)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline+2*iBps)) >>3) | + ( (*(pDataline+iBps)&0xFC) << 3) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( (*(pDataline))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline+4)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGr16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGb16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + MNG_COMPOSE8 (iRed, *pDataline, iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgr565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ( (*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >>3 ) | ( (*(pDataline+1)&0xFC ) << 3) ); + + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + MNG_COMPOSE8 (iRed, *pDataline, iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGR565 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGB565 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_rgb565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( ( *(pDataline+4)) & 0xF8) | (*(pDataline+2) >> 5 ) ); + *pScanline = (mng_uint8)( ( ( *(pDataline )) >> 3 ) | ((*(pDataline+2) & 0xFC) << 3) ); + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) & 0xF8) | (*(pDataline+1) >> 5 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+1) & 0xFC) << 3) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+4)) & 0xF8) | (*(pDataline+2)>>5) ); + *pScanline = (mng_uint8)( ( (*(pDataline )) >> 3 ) | ((*(pDataline+2)&0xFC) << 3) ); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + + /* scale background up */ + iBGr16 = (mng_uint8)( *(pScanline+1) & 0xF8 ); + iBGg16 = (mng_uint8)( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0) >> 3 ) ); + iBGb16 = (mng_uint8)( *(pScanline ) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8)( (mng_uint8)((iFGb16 >> 8) &0xF8) | ( (mng_uint8)(iFGg16 >> 8) >> 5 ) ); + *pScanline = (mng_uint8)( (mng_uint8) (iFGr16 >>11) | ( ( (mng_uint8)(iFGg16 >> 8) & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) & 0xF8) | ( *(pDataline+1) >> 5 ) ); + *pScanline = (mng_uint8)( ( (*(pDataline )) >> 3 ) | ( (*(pDataline+1) & 0xFC) << 3 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( *(pScanline+1) & 0xF8); + iGreen = (mng_uint8)( ( *(pScanline+1) << 5 ) | ( ( (*pScanline)&0xE0)>>3 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+2), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+0), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( iRed & 0xF8) | ( iGreen >> 5 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_rgb565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB565, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( ( *(pDataline+2*iBps)) & 0xF8) | + (*(pDataline+iBps) >> 5 ) ); + *pScanline = (mng_uint8)( ( ( *(pDataline )) >> 3 ) | + ((*(pDataline+iBps) & 0xFC) << 3) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+4)) & 0xF8) | (*(pDataline+2)>>5) ); + *pScanline = (mng_uint8)( ( (*(pDataline )) >> 3 ) | ((*(pDataline+2)&0xFC) << 3) ); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + + /* scale background up */ + iBGr16 = (mng_uint8)( *(pScanline+1) & 0xF8 ); + iBGg16 = (mng_uint8)( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0) >> 3 ) ); + iBGb16 = (mng_uint8)( *(pScanline ) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8)( (mng_uint8)((iFGb16 >> 8) &0xF8) | ( (mng_uint8)(iFGg16 >> 8) >> 5 ) ); + *pScanline = (mng_uint8)( (mng_uint8) (iFGr16 >>11) | ( ( (mng_uint8)(iFGg16 >> 8) & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) & 0xF8) | ( *(pDataline+1) >> 5 ) ); + *pScanline = (mng_uint8)( ( (*(pDataline )) >> 3 ) | ( (*(pDataline+1) & 0xFC) << 3 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( *(pScanline+1) & 0xF8); + iGreen = (mng_uint8)( ( *(pScanline+1) << 5 ) | ( ( (*pScanline)&0xE0)>>3 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+2), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+0), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( iRed & 0xF8) | ( iGreen >> 5 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_rgb565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) & 0xF8) | (*(pDataline+1) >> 5 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+1) & 0xFC) << 3) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) & 0xF8) | ( *(pDataline+1) >> 5 ) ); + *pScanline = (mng_uint8)( ( (*(pDataline )) >> 3 ) | ( (*(pDataline+1) & 0xFC) << 3 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( *(pScanline+1) & 0xF8); + iGreen = (mng_uint8)( ( *(pScanline+1) << 5 ) | ( ( (*pScanline)&0xE0)>>3 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+2), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+0), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( iRed & 0xF8) | ( iGreen >> 5 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_RGB565 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGRA565 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgra565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ( (*(pDataline+2)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline+4)) >>3) | ( (*(pDataline+2)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+6); + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ( (*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >>3 ) | ( (*(pDataline+1)&0xFC ) << 3) ); + *(pScanline+2) = *(pDataline+3); + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+2)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *(pScanline+1) = (mng_uint8)( (*(pDataline))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline+4)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + *(pScanline+2) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGr16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGb16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + } + else + { /* scale background up */ + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iCr16 >> 8) & 0xF8 ) | ( (mng_uint8)(iCg16 >> 8) >> 5 ) ); + *pScanline = (mng_uint8) ( ( (iCb16 >> 11) ) | (((mng_uint8)(iCg16 >> 8) & 0xFC) << 3) ); + *(pScanline+2) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+2); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3); + } + else + { + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (iRed, *pDataline, iFGa8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iFGa8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iFGa8, iBlue ); + /* alpha remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + iRed , iGreen , iBlue , iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + + + *pScanline = (mng_uint8) ( ( iCb8 >> 3 ) | ( (iCg8 & 0xFC) << 3) ); + *(pScanline+1) = (mng_uint8) ( ( iCr8 & 0xF8 ) | (iCg8>>5) ); + *(pScanline+2) = (mng_uint8) iCa8; + } + } + } + + pScanline += (pData->iColinc *3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgra565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA565, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | + ( (*(pDataline+iBps)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline+2*iBps)) >>3) | + ( (*(pDataline+iBps)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3*iBps); + + pScanline += (pData->iColinc * 3); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+2)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *(pScanline+1) = (mng_uint8)( (*(pDataline))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline+4)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + *(pScanline+2) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGr16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGb16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + } + else + { /* scale background up */ + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iCr16 >> 8) & 0xF8 ) | ( (mng_uint8)(iCg16 >> 8) >> 5 ) ); + *pScanline = (mng_uint8) ( ( (iCb16 >> 11) ) | (((mng_uint8)(iCg16 >> 8) & 0xFC) << 3) ); + *(pScanline+2) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+2); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3); + } + else + { + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (iRed, *pDataline, iFGa8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iFGa8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iFGa8, iBlue ); + /* alpha remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + iRed , iGreen , iBlue , iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + + + *pScanline = (mng_uint8) ( ( iCb8 >> 3 ) | ( (iCg8 & 0xFC) << 3) ); + *(pScanline+1) = (mng_uint8) ( ( iCr8 & 0xF8 ) | (iCg8>>5) ); + *(pScanline+2) = (mng_uint8) iCa8; + } + } + } + + pScanline += (pData->iColinc *3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgra565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ( (*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >>3 ) | ( (*(pDataline+1)&0xFC ) << 3) ); + *(pScanline+2) = *(pDataline+3); + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+2); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3); + } + else + { + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (iRed, *pDataline, iFGa8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iFGa8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iFGa8, iBlue ); + /* alpha remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + iRed , iGreen , iBlue , iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + + + *pScanline = (mng_uint8) ( ( iCb8 >> 3 ) | ( (iCg8 & 0xFC) << 3) ); + *(pScanline+1) = (mng_uint8) ( ( iCr8 & 0xF8 ) | (iCg8>>5) ); + *(pScanline+2) = (mng_uint8) iCa8; + } + } + } + + pScanline += (pData->iColinc *3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGRA565 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGBA565 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_rgba565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+4))&0xF8 ) | ( (*(pDataline+2)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline)) >>3) | ( (*(pDataline+2)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+6); + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2))&0xF8 ) | ( (*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline) >>3 ) | ( (*(pDataline+1)&0xFC ) << 3) ); + *(pScanline+2) = *(pDataline+3); + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+2)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *(pScanline+1) = (mng_uint8)( (*(pDataline+4))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + *(pScanline+2) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGb16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGb16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGr16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGb16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iCb16 >> 8) & 0xF8 ) | ( (mng_uint8)(iCg16 >> 8) >> 5 ) ); + *pScanline = (mng_uint8) ( ( (iCr16 >> 11) ) | (((mng_uint8)(iCg16 >> 8) & 0xFC) << 3) ); + *(pScanline+2) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+2); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3); + } + else + { + mng_uint8 iRed, iGreen, iBlue; + + iBlue = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iRed = (mng_uint8) ( (*pScanline << 3) ); + + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (iRed, *pDataline, iFGa8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iFGa8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iFGa8, iBlue ); + /* alpha remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8) ( ( iBlue & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iRed >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + iRed , iGreen , iBlue , iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + + + *pScanline = (mng_uint8) ( ( iCr8 >> 3 ) | ( (iCg8 & 0xFC) << 3) ); + *(pScanline+1) = (mng_uint8) ( ( iCb8 & 0xF8 ) | (iCg8>>5) ); + *(pScanline+2) = (mng_uint8) iCa8; + } + } + } + + pScanline += (pData->iColinc *3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_rgba565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint16 iFGa16, iBGa16, iCa16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA565, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2*iBps))&0xF8 ) | + ( (*(pDataline+iBps)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline)) >>3) | + ( (*(pDataline+iBps)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3*iBps); + + pScanline += (pData->iColinc * 3); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* get alpha values */ + iFGa16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*(pScanline+2)); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* plain copy it */ + *(pScanline+1) = (mng_uint8)( (*(pDataline+4))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + *(pScanline+2) = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + iBGr16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGb16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGb16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGr16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + } + else + { /* scale background up */ + iBGr16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGb16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iCb16 >> 8) & 0xF8 ) | ( (mng_uint8)(iCg16 >> 8) >> 5 ) ); + *pScanline = (mng_uint8) ( ( (iCr16 >> 11) ) | (((mng_uint8)(iCg16 >> 8) & 0xFC) << 3) ); + *(pScanline+2) = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 3); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+2); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3); + } + else + { + mng_uint8 iRed, iGreen, iBlue; + + iBlue = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iRed = (mng_uint8) ( (*pScanline << 3) ); + + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (iRed, *pDataline, iFGa8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iFGa8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iFGa8, iBlue ); + /* alpha remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8) ( ( iBlue & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iRed >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + iRed , iGreen , iBlue , iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + + + *pScanline = (mng_uint8) ( ( iCr8 >> 3 ) | ( (iCg8 & 0xFC) << 3) ); + *(pScanline+1) = (mng_uint8) ( ( iCb8 & 0xF8 ) | (iCg8>>5) ); + *(pScanline+2) = (mng_uint8) iCa8; + } + } + } + + pScanline += (pData->iColinc *3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_rgba565 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA565, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl * 3); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2))&0xF8 ) | ( (*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline) >>3 ) | ( (*(pDataline+1)&0xFC ) << 3) ); + *(pScanline+2) = *(pDataline+3); + + pScanline += (pData->iColinc * 3); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iFGa8 = *(pDataline+3); /* get alpha values */ + iBGa8 = *(pScanline+2); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline+2)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *(pScanline+2) = *(pDataline+3); + } + else + { + mng_uint8 iRed, iGreen, iBlue; + + iBlue = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | ( ((*pScanline) & 0xE0)>>3 ) ); + iRed = (mng_uint8) ( (*pScanline << 3) ); + + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE8 (iRed, *pDataline, iFGa8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iFGa8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iFGa8, iBlue ); + /* alpha remains fully opaque !!! */ + *(pScanline+1) = (mng_uint8) ( ( iBlue & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iRed >> 3 ) | ( (iGreen & 0xFC) << 3) ); + } + else + { /* now blend */ + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, + iRed , iGreen , iBlue , iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + + + *pScanline = (mng_uint8) ( ( iCr8 >> 3 ) | ( (iCg8 & 0xFC) << 3) ); + *(pScanline+1) = (mng_uint8) ( ( iCb8 & 0xF8 ) | (iCg8>>5) ); + *(pScanline+2) = (mng_uint8) iCa8; + } + } + } + + pScanline += (pData->iColinc *3); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_RGBA565 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGR565_A8 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgr565_a8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pAlphaline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16, iBGa16; + mng_uint16 iCr16, iCg16, iCb16, iCa16; + mng_uint8 iA8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565_A8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + pAlphaline = (mng_uint8p)pData->fGetalphaline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row +starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pAlphaline = pAlphaline + pData->iCol + pData->iDestl; + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ((*(pDataline+2)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline+4)) >>3) | ((*(pDataline+2)&0xFC) << 3) ); + *pAlphaline = (mng_uint8)(*(pDataline+6)); + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ((*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >>3 ) | ((*(pDataline+1)&0xFC ) << 3) ); + *pAlphaline = (mng_uint8)(*(pDataline+3)); + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + else /* Not fully opaque */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pAlphaline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iA16) /* any opacity at all ? */ + { + if ((iA16 == 0xFFFF) || (iBGa16 == 0)) /* fully opaque or background fully transparent ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( (*(pDataline))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline+4)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + *pAlphaline = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { + /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGr16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGb16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + *pAlphaline = (mng_uint8)(iA16>>8); + } + else /* background is not fully opaque */ + { /* scale background up */ + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iA16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iCr16 >> 8)&0xF8 ) | ( (mng_uint8)(iCg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iCb16>>11) ) | (((mng_uint8)(iCg16>>8)&0xFC) << 3) ); + *pAlphaline = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; +iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + iBGa8 = *pAlphaline; + + if (iA8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iA8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *pAlphaline = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { + /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | (((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + MNG_COMPOSE8 (iRed, *pDataline, iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ((iGreen & 0xFC) << 3) ); + *pAlphaline = iA8; + } + else /* background not fully opaque */ + { + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iA8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( iCr8 & 0xF8 ) | (iCg8>>5) ); + *pScanline = (mng_uint8) ( ( iCb8 >> 3 ) | ((iCg8 & 0xFC) << 3) ); + *pAlphaline = iCa8; + } + } + } + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgr565_a8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pAlphaline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16, iBGa16; + mng_uint16 iCr16, iCg16, iCb16, iCa16; + mng_uint8 iA8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + mng_uint8 iBps; + + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565_A8, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + pAlphaline = (mng_uint8p)pData->fGetalphaline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row +starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pAlphaline = pAlphaline + pData->iCol + pData->iDestl; + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | + ((*(pDataline+iBps)>>5) ) ); + *pScanline = (mng_uint8)( ( (*(pDataline+2*iBps)) >>3) | + ((*(pDataline+iBps)&0xFC) << 3) ); + *pAlphaline = (mng_uint8)(*(pDataline+6)); + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 8; + } + } + else /* Not fully opaque */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + iBGa16 = (mng_uint16)(*pAlphaline); + iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; + + if (iA16) /* any opacity at all ? */ + { + if ((iA16 == 0xFFFF) || (iBGa16 == 0)) /* fully opaque or background fully transparent ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( (*(pDataline))&0xF8 ) | (mng_uint8)( (*(pDataline+2)>>5 ) ); + *pScanline = (mng_uint8)( (*(pDataline+4)) >>3) | (mng_uint8)( (*(pDataline+2)&0xFC) << 3); + *pAlphaline = *(pDataline+6); + } + else + { + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { + /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + /* scale background up */ + + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iFGr16 >> 8)&0xF8 ) | ( (mng_uint8)(iFGg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iFGb16>>11) ) | (((mng_uint8)(iFGg16>>8)&0xFC) << 3) ); + *pAlphaline = (mng_uint8)(iA16>>8); + } + else /* background is not fully opaque */ + { /* scale background up */ + iBGb16 = (mng_uint16)( (*(pScanline+1)) & 0xF8 ); + iBGg16 = (mng_uint16)( (*(pScanline+1) << 5) | (((*(pScanline )) & 0xE0) >>3 ) ); + iBGr16 = (mng_uint16)( (*(pScanline )) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* let's blend */ + MNG_BLEND16 (mng_get_uint16 (pDataline ), + mng_get_uint16 (pDataline+2), + mng_get_uint16 (pDataline+4), iA16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( (iCr16 >> 8)&0xF8 ) | ( (mng_uint8)(iCg16>>8) >> 5) ); + *pScanline = (mng_uint8) ( ( (iCb16>>11) ) | (((mng_uint8)(iCg16>>8)&0xFC) << 3) ); + *pAlphaline = (mng_uint8)(iCa16 >> 8); + } + } + } + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; +iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + iBGa8 = *pAlphaline; + + if (iA8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iA8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *pAlphaline = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { + /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | (((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + MNG_COMPOSE8 (iRed, *pDataline, iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ((iGreen & 0xFC) << 3) ); + *pAlphaline = iA8; + } + else /* background not fully opaque */ + { + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iA8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( iCr8 & 0xF8 ) | (iCg8>>5) ); + *pScanline = (mng_uint8) ( ( iCb8 >> 3 ) | ((iCg8 & 0xFC) << 3) ); + *pAlphaline = iCa8; + } + } + } + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgr565_a8 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pAlphaline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8, iBGa8, iCa8; + mng_uint8 iCr8, iCg8, iCb8; + + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565_A8, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + pAlphaline = (mng_uint8p)pData->fGetalphaline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row +starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pAlphaline = pAlphaline + pData->iCol + pData->iDestl; + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline))&0xF8 ) | ((*(pDataline+1)>>5 ) ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >>3 ) | ((*(pDataline+1)&0xFC ) << 3) ); + *pAlphaline = (mng_uint8)(*(pDataline+3)); + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + else /* Not fully opaque */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; +iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + iBGa8 = *pAlphaline; + + if (iA8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iA8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ( (*(pDataline)) &0xF8 ) | (*(pDataline+1) >>5 ) ); + *pScanline = (mng_uint8)( ( ((*(pDataline+2))>>3) ) | ((*(pDataline+1)&0xFC) << 3) ); + *pAlphaline = *(pDataline+3); + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { + /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8) ( *(pScanline+1) & 0xF8 ); + iGreen = (mng_uint8) ( (*(pScanline+1) << 5) | (((*pScanline) & 0xE0)>>3 ) ); + iBlue = (mng_uint8) ( (*pScanline << 3) ); + + MNG_COMPOSE8 (iRed, *pDataline, iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8) ( ( iRed & 0xF8 ) | (iGreen>>5) ); + *pScanline = (mng_uint8) ( ( iBlue >> 3 ) | ((iGreen & 0xFC) << 3) ); + *pAlphaline = iA8; + } + else /* background not fully opaque */ + { + MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iA8, + *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8) ( ( iCr8 & 0xF8 ) | (iCg8>>5) ); + *pScanline = (mng_uint8) ( ( iCb8 >> 3 ) | ((iCg8 & 0xFC) << 3) ); + *pAlphaline = iCa8; + } + } + } + + pScanline += (pData->iColinc * 2); + pAlphaline += pData->iColinc; + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR565_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGR565_A8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGB555 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_rgb555 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB555, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+4) & 0xF8) >> 1 ) | (*(pDataline+2) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+2) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+2) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+4) & 0xF8) >> 1 ) | (*(pDataline+2) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+2) & 0xF8) << 2 ) ); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + + /* scale background up */ + iBGr16 = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iBGg16 = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBGb16 = (mng_uint8)( *(pScanline ) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8)( (mng_uint8)(((iFGb16 >> 8) & 0xF8) >> 1 ) | ( (mng_uint8)(iFGg16 >> 8) >> 6 ) ); + *pScanline = (mng_uint8)( (mng_uint8) ((iFGr16 >>11) >> 3 ) | ( ( (mng_uint8)(iFGg16 >> 8) & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+2) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iGreen = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+2), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+0), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( (iRed & 0xF8) >> 1 ) | ( iGreen >> 6 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB555, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_rgb555 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB555, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+2*iBps) & 0xF8) >> 1 ) | (*(pDataline+iBps) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+iBps) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+4) & 0xF8) >> 1 ) | (*(pDataline+2) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+2) & 0xF8) << 2 ) ); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + + /* scale background up */ + iBGr16 = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iBGg16 = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBGb16 = (mng_uint8)( *(pScanline ) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8)( (mng_uint8)(((iFGb16 >> 8) & 0xF8) >> 1 ) | ( (mng_uint8)(iFGg16 >> 8) >> 6 ) ); + *pScanline = (mng_uint8)( (mng_uint8) ((iFGr16 >>11) >> 3 ) | ( ( (mng_uint8)(iFGg16 >> 8) & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+2) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iGreen = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+2), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+0), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( (iRed & 0xF8) >> 1 ) | ( iGreen >> 6 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB555, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_rgb555 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB555, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+2) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline+2) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline ) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iGreen = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+2), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+0), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( (iRed & 0xF8) >> 1 ) | ( iGreen >> 6 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_RGB555, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_RGB555 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGR555 +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_OPTIMIZE_FOOTPRINT_COMPOSE +mng_retcode mng_display_bgr555 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR555, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + if (pData->bIsRGBA16) /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); + else + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+2) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+4) >> 3 ) | ((*(pDataline+2) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+2) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+4) >> 3 ) | ((*(pDataline+2) & 0xF8) << 2 ) ); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + + /* scale background up */ + iBGb16 = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iBGg16 = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBGr16 = (mng_uint8)( *(pScanline ) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8)( (mng_uint8)(((iFGr16 >> 8) & 0xF8) >> 1 ) | ( (mng_uint8)(iFGg16 >> 8) >> 6 ) ); + *pScanline = (mng_uint8)( (mng_uint8) ((iFGb16 >>11) >> 3 ) | ( ( (mng_uint8)(iFGg16 >> 8) & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iGreen = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+0), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( (iRed & 0xF8) >> 1 ) | ( iGreen >> 6 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR555, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#else /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +mng_retcode mng_display_bgr555 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint16 iA16; + mng_uint16 iFGr16, iFGg16, iFGb16; + mng_uint16 iBGr16, iBGg16, iBGb16; + mng_uint8 iA8; + mng_uint8 iBps; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR555, MNG_LC_START); +#endif + + iBps=(mng_uint8)(pData->bIsRGBA16 ? 2:1); + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + /* adjust source row starting-point */ + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << (iBps+1)); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+iBps) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2*iBps) >> 3 ) | ((*(pDataline+iBps) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4*iBps; + } + } + else + { + if (pData->bIsRGBA16) /* 16-bit input row ? */ + { + + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA16 = mng_get_uint16 (pDataline+6); + + if (iA16) /* any opacity at all ? */ + { + if (iA16 == 0xFFFF) /* fully opaque ? */ + { /* scale down by dropping the LSB */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+2) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+4) >> 3 ) | ((*(pDataline+2) & 0xF8) << 2 ) ); + } + else + { /* get the proper values */ + iFGr16 = mng_get_uint16 (pDataline ); + iFGg16 = mng_get_uint16 (pDataline+2); + iFGb16 = mng_get_uint16 (pDataline+4); + + /* scale background up */ + iBGb16 = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iBGg16 = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBGr16 = (mng_uint8)( *(pScanline ) << 3 ); + + iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; + iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; + iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; + /* now compose */ + MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16); + MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16); + MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16); + /* and return the composed values */ + *(pScanline+1) = (mng_uint8)( (mng_uint8)(((iFGr16 >> 8) & 0xF8) >> 1 ) | ( (mng_uint8)(iFGg16 >> 8) >> 6 ) ); + *pScanline = (mng_uint8)( (mng_uint8) ((iFGb16 >>11) >> 3 ) | ( ( (mng_uint8)(iFGg16 >> 8) & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 8; + } + } + else + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iGreen = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+0), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( (iRed & 0xF8) >> 1 ) | ( iGreen >> 6 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR555, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_COMPOSE */ +#else /* MNG_NO_16BIT_SUPPORT */ +mng_retcode mng_display_bgr555 (mng_datap pData) +{ + mng_uint8p pScanline; + mng_uint8p pDataline; + mng_int32 iX; + mng_uint8 iA8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR555, MNG_LC_START); +#endif + /* viewable row ? */ + if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) + { /* address destination row */ + pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), + pData->iRow + pData->iDestt - + pData->iSourcet); + /* adjust destination row starting-point */ + pScanline = pScanline + (pData->iCol * 2) + (pData->iDestl * 2); + pDataline = pData->pRGBArow; /* address source row */ + + pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); + + if (pData->bIsOpaque) /* forget about transparency ? */ + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { /* copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + else + { + { + for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; + iX += pData->iColinc) + { + iA8 = *(pDataline+3); /* get alpha value */ + + if (iA8) /* any opacity at all ? */ + { + if (iA8 == 0xFF) /* fully opaque ? */ + { /* then simply copy the values */ + *(pScanline+1) = (mng_uint8)( ((*(pDataline ) & 0xF8) >> 1 ) | (*(pDataline+1) >> 6 ) ); + *pScanline = (mng_uint8)( ( *(pDataline+2) >> 3 ) | ((*(pDataline+1) & 0xF8) << 2 ) ); + } + else + { /* do alpha composing */ + mng_uint8 iRed, iGreen, iBlue; + + iRed = (mng_uint8)( (*(pScanline+1) & 0xF8) << 1 ); + iGreen = (mng_uint8)( (*(pScanline+1) << 6 ) | ( ((*pScanline) & 0xE0) >> 2 ) ); + iBlue = (mng_uint8)( *(pScanline ) << 3 ); + + MNG_COMPOSE8 (iRed, *(pDataline+0), iA8, iRed ); + MNG_COMPOSE8 (iGreen, *(pDataline+1), iA8, iGreen ); + MNG_COMPOSE8 (iBlue, *(pDataline+2), iA8, iBlue ); + + *(pScanline+1) = (mng_uint8)( ( (iRed & 0xF8) >> 1 ) | ( iGreen >> 6 ) ); + *pScanline = (mng_uint8)( (iBlue >> 3 ) | ( (iGreen & 0xF8) << 2 ) ); + } + } + + pScanline += (pData->iColinc * 2); + pDataline += 4; + } + } + } + } + + check_update_region (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_BGR555, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_SKIPCANVAS_BGR555 */ + + +#ifndef MNG_SKIPCHUNK_BACK +/* ************************************************************************** */ +/* * * */ +/* * Background restore routines - restore the background with info from * */ +/* * the BACK and/or bKGD chunk or the app's background canvas * */ +/* * * */ +/* ************************************************************************** */ + +mng_retcode mng_restore_bkgd_backimage (mng_datap pData) +{ + /* save some stuff */ + mng_uint8p pRGBArow = pData->pRGBArow; + mng_int32 iRow = pData->iRow; + mng_int32 iRowsamples = pData->iRowsamples; + + mng_retcode iRetcode; /* work variables */ + mng_uint8p pTemp; + mng_uint8p pWork = pRGBArow; + mng_uint32 iX; + mng_int32 iZ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BACKIMAGE, MNG_LC_START); +#endif + /* determine row to retrieve */ + pData->iRow = pData->iDestt + iRow + pData->iBackimgoffsy; + + while (pData->iRow >= (mng_int32)pData->iBackimgheight) + pData->iRow -= (mng_int32)pData->iBackimgheight; + /* set width to that of background image */ + pData->iRowsamples = pData->iBackimgwidth; + /* retrieve into alternate buffer ! */ + pData->pRGBArow = pData->pPrevrow; + /* get it then */ + iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData); + + if (iRetcode) /* on error; bail out */ + return iRetcode; + /* we got the full row; but now need to + paste it into the proper location */ + iX = pData->iDestl - pData->iBackimgoffsx; + + while (iX >= pData->iBackimgwidth) + iX -= pData->iBackimgwidth; + +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->bIsRGBA16) /* 16-bit buffer ? */ + { + pTemp = pData->pPrevrow + (iX << 3); + + for (iZ = (pData->iDestr - pData->iDestl); iZ > 0; iZ--) + { + MNG_COPY (pWork, pTemp, 8); + + pWork += 8; + pTemp += 8; + iX++; + /* reached end of bkgd-image line ? */ + if (iX >= pData->iBackimgwidth) + { + iX = 0; + pTemp = pData->pPrevrow; + } + } + } + else +#endif + { + pTemp = pData->pPrevrow + (iX << 2); + + for (iZ = (pData->iDestr - pData->iDestl); iZ > 0; iZ--) + { + MNG_COPY (pWork, pTemp, 4); + + pWork += 4; + pTemp += 4; + iX++; + /* reached end of bkgd-image line ? */ + if (iX >= pData->iBackimgwidth) + { + iX = 0; + pTemp = pData->pPrevrow; + } + } + } + + pData->pRGBArow = pRGBArow; /* restore original values */ + pData->iRow = iRow; + pData->iRowsamples = iRowsamples; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BACKIMAGE, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_restore_bkgd_backcolor (mng_datap pData) +{ + mng_int32 iX; + mng_uint32p pWork32 = (mng_uint32p)pData->pRGBArow; + mng_uint32 iWrite; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BACKCOLOR, MNG_LC_START); +#endif + +#ifdef MNG_BIGENDIAN_SUPPORTED + /* fast way for big endian */ + iWrite = (((mng_uint8)(pData->iBACKred >> 8)) << 24) | + (((mng_uint8)(pData->iBACKgreen >> 8)) << 16) | + (((mng_uint8)(pData->iBACKblue >> 8)) << 8) | + ( 0xFF ); +#elif defined(MNG_LITTLEENDIAN_SUPPORTED) + /* fast way for little endian */ + iWrite = ( 0xFF << 24) | + (((mng_uint8)(pData->iBACKblue >> 8)) << 16) | + (((mng_uint8)(pData->iBACKgreen >> 8)) << 8) | + (((mng_uint8)(pData->iBACKred >> 8)) ); +#else + /* generic way, works on all platforms */ + /* put the data in memory in the correct order */ + { + mng_uint8 aBytes[4]; + aBytes[0] = (mng_uint8)(pData->iBACKred >> 8); + aBytes[1] = (mng_uint8)(pData->iBACKgreen >> 8); + aBytes[2] = (mng_uint8)(pData->iBACKblue >> 8); + aBytes[3] = 0xFF; + /* load that data into a register */ + iWrite = *(mng_uint32*) aBytes; + } +#endif + /* ok; drop the background-color in there */ + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + *pWork32++ = iWrite; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BACKCOLOR, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_bKGD +mng_retcode mng_restore_bkgd_bkgd (mng_datap pData) +{ + mng_int32 iX; + mng_uint8p pWork = pData->pRGBArow; + mng_imagep pImage = (mng_imagep)pData->pCurrentobj; + mng_imagedatap pBuf = pImage->pImgbuf; + mng_uint8 iRed = 0; + mng_uint8 iGreen = 0; + mng_uint8 iBlue = 0; + mng_uint32p pWork32 = (mng_uint32p)pWork; + mng_uint32 iWrite; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BKGD, MNG_LC_START); +#endif + + switch (pBuf->iColortype) + { + case 0 : ; /* gray types */ + case 4 : { + mng_uint8 iGray; + +#ifndef MNG_NO_16BIT_SUPPORT + if (pBuf->iBitdepth > 8) + iGray = (mng_uint8)(pBuf->iBKGDgray >> 8); + else +#endif + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + /* LBR scaling */ + mng_uint8 multiplier[]={0,255,85,0,17,0,0,0,1}; + iGray = (mng_uint8)(multiplier[pBuf->iBitdepth] * pBuf->iBKGDgray); +#else + iGray = (mng_uint8)pBuf->iBKGDgray; +#endif + } + + iRed = iGray; + iGreen = iGray; + iBlue = iGray; + + break; + } + + case 3 : { /* indexed type */ + iRed = pBuf->aPLTEentries [pBuf->iBKGDindex].iRed; + iGreen = pBuf->aPLTEentries [pBuf->iBKGDindex].iGreen; + iBlue = pBuf->aPLTEentries [pBuf->iBKGDindex].iBlue; + + break; + } + + case 2 : ; /* rgb types */ + case 6 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pBuf->iBitdepth > 8) + { + iRed = (mng_uint8)(pBuf->iBKGDred >> 8); + iGreen = (mng_uint8)(pBuf->iBKGDgreen >> 8); + iBlue = (mng_uint8)(pBuf->iBKGDblue >> 8); + } + else +#endif + { + iRed = (mng_uint8)(pBuf->iBKGDred ); + iGreen = (mng_uint8)(pBuf->iBKGDgreen); + iBlue = (mng_uint8)(pBuf->iBKGDblue ); + } + + break; + } + } + +#ifdef MNG_BIGENDIAN_SUPPORTED + /* fast way for big endian */ + iWrite = (iRed << 24) | + (iGreen << 16) | + (iBlue << 8); +#elif defined(MNG_LITTLEENDIAN_SUPPORTED) + /* fast way for little endian */ + iWrite = (iBlue << 16) | + (iGreen << 8) | + (iRed ); +#else + /* generic way, works on all platforms */ + /* put the data in memory in the correct order */ + { + mng_uint8 aBytes[4]; + aBytes[0] = (mng_uint8)(iRed); + aBytes[1] = (mng_uint8)(iGreen); + aBytes[2] = (mng_uint8)(iBlue); + aBytes[3] = 0x00; + /* load that data into a register */ + iWrite = *(mng_uint32*) aBytes; + } +#endif + /* ok; drop it in there */ + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + *pWork32++ = iWrite; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BKGD, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_restore_bkgd_bgcolor (mng_datap pData) +{ + mng_int32 iX; + mng_uint32p pWork32 = (mng_uint32p)pData->pRGBArow; + mng_uint32 iWrite; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGCOLOR, MNG_LC_START); +#endif + +#ifdef MNG_BIGENDIAN_SUPPORTED + /* fast way for big endian */ + iWrite = (((mng_uint8)(pData->iBGred >> 8)) << 24) | + (((mng_uint8)(pData->iBGgreen >> 8)) << 16) | + (((mng_uint8)(pData->iBGblue >> 8)) << 8); +#elif defined(MNG_LITTLEENDIAN_SUPPORTED) + /* fast way for little endian */ + iWrite = (((mng_uint8)(pData->iBGblue >> 8)) << 16) | + (((mng_uint8)(pData->iBGgreen >> 8)) << 8) | + (((mng_uint8)(pData->iBGred >> 8)) ); +#else + /* generic way, works on all platforms */ + /* put the data in memory in the correct order */ + { + mng_uint8 aBytes[4]; + aBytes[0] = (mng_uint8)(pData->iBGred >> 8); + aBytes[1] = (mng_uint8)(pData->iBGgreen >> 8); + aBytes[2] = (mng_uint8)(pData->iBGblue >> 8); + aBytes[3] = 0x00; + /* load that data into a register */ + iWrite = *(mng_uint32*) aBytes; + } +#endif + /* ok; drop the background-color in there */ + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + *pWork32++ = iWrite; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGCOLOR, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGB8 +mng_retcode mng_restore_bkgd_rgb8 (mng_datap pData) +{ + mng_int32 iX; + mng_uint8p pBkgd; + mng_uint8p pWork = pData->pRGBArow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_RGB8, MNG_LC_START); +#endif + + if (pData->fGetbkgdline) /* can we access the background ? */ + { /* point to the right pixel then */ + pBkgd = (mng_uint8p)pData->fGetbkgdline ((mng_handle)pData, + pData->iRow + pData->iDestt) + + (3 * pData->iDestl); + + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + { + *pWork = *pBkgd; /* ok; copy the pixel */ + *(pWork+1) = *(pBkgd+1); + *(pWork+2) = *(pBkgd+2); + *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ + + pWork += 4; + pBkgd += 3; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SKIPCANVAS_RGB8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGR8 +mng_retcode mng_restore_bkgd_bgr8 (mng_datap pData) +{ + mng_int32 iX; + mng_uint8p pBkgd; + mng_uint8p pWork = pData->pRGBArow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGR8, MNG_LC_START); +#endif + + if (pData->fGetbkgdline) /* can we access the background ? */ + { /* point to the right pixel then */ + pBkgd = (mng_uint8p)pData->fGetbkgdline ((mng_handle)pData, + pData->iRow + pData->iDestt) + + (3 * pData->iDestl); + + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + { + *pWork = *(pBkgd+2); /* ok; copy the pixel */ + *(pWork+1) = *(pBkgd+1); + *(pWork+2) = *pBkgd; + *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ + + pWork += 4; + pBkgd += 3; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGR8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SKIPCANVAS_BGR8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGRX8 +mng_retcode mng_restore_bkgd_bgrx8 (mng_datap pData) +{ + mng_int32 iX; + mng_uint8p pBkgd; + mng_uint8p pWork = pData->pRGBArow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGRX8, MNG_LC_START); +#endif + + if (pData->fGetbkgdline) /* can we access the background ? */ + { /* point to the right pixel then */ + pBkgd = (mng_uint8p)pData->fGetbkgdline ((mng_handle)pData, + pData->iRow + pData->iDestt) + + (3 * pData->iDestl); + + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + { + *pWork = *(pBkgd+2); /* ok; copy the pixel */ + *(pWork+1) = *(pBkgd+1); + *(pWork+2) = *pBkgd; + *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ + + pWork += 4; + pBkgd += 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGRX8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SKIPCANVAS_BGRX8 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_BGR565 +mng_retcode mng_restore_bkgd_bgr565 (mng_datap pData) +{ + mng_int32 iX; + mng_uint8p pBkgd; + mng_uint8p pWork = pData->pRGBArow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGR565, MNG_LC_START); +#endif + + if (pData->fGetbkgdline) /* can we access the background ? */ + { /* point to the right pixel then */ + pBkgd = (mng_uint8p)pData->fGetbkgdline ((mng_handle)pData, + pData->iRow + pData->iDestt) + + (3 * pData->iDestl); + + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + { + *pWork = (mng_uint8)( *(pBkgd+1) & 0xF8); /* ok; copy the pixel */ + *(pWork+1) = (mng_uint8)( (*(pBkgd+1) << 5 ) | ( ((*pBkgd)&0xE0)>>3 ) ); + *(pWork+2) = (mng_uint8)( *(pBkgd) << 3 ); + *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ + + pWork += 4; + pBkgd += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_BGR565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SKIPCANVAS_BGR565 */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCANVAS_RGB565 +mng_retcode mng_restore_bkgd_rgb565 (mng_datap pData) +{ + mng_int32 iX; + mng_uint8p pBkgd; + mng_uint8p pWork = pData->pRGBArow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_RGB565, MNG_LC_START); +#endif + + if (pData->fGetbkgdline) /* can we access the background ? */ + { /* point to the right pixel then */ + pBkgd = (mng_uint8p)pData->fGetbkgdline ((mng_handle)pData, + pData->iRow + pData->iDestt) + + (3 * pData->iDestl); + + for (iX = (pData->iSourcer - pData->iSourcel); iX > 0; iX--) + { + *pWork = (mng_uint8)( *(pBkgd)&0xF8); /* ok; copy the pixel */ + *(pWork+1) = (mng_uint8)( (*(pBkgd+1) << 5) | ( ((*pBkgd)&0xE0)>>3 ) ); + *(pWork+2) = (mng_uint8)( *(pBkgd+1) << 3); + *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ + + pWork += 4; + pBkgd += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_RGB565, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SKIPCANVAS_RBB565 */ + + +/* ************************************************************************** */ +/* * * */ +/* * Row retrieval routines - retrieve processed & uncompressed row-data * */ +/* * from the current "object" * */ +/* * * */ +/* ************************************************************************** */ + +/* TODO: a serious optimization is to retrieve only those pixels that will + actually be displayed; this would require changes in + the "display_image" routine (in mng_display.c) & + all the "retrieve_xxx" routines below & + the "display_xxx" routines above !!!!! + NOTE that "correct_xxx" routines would not require modification */ + +mng_retcode mng_retrieve_g8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iG; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_G8, MNG_LC_START); +#endif + + pRGBArow = pData->pRGBArow; /* temporary work pointers */ + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + + if (pBuf->bHasTRNS) /* tRNS in buffer ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iG = *pWorkrow; /* get the gray-value */ + /* is it transparent ? */ + if ((mng_uint16)iG == pBuf->iTRNSgray) + { + *pRGBArow = 0x00; /* nuttin to display */ + *(pRGBArow+1) = 0x00; + *(pRGBArow+2) = 0x00; + *(pRGBArow+3) = 0x00; + } + else + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + mng_uint8 multiplier[]={0,255,85,0,17,0,0,0,1}; + iG = (mng_uint8)(iG * multiplier[pBuf->iBitdepth]); +#endif + + *pRGBArow = iG; /* put in intermediate row */ + *(pRGBArow+1) = iG; + *(pRGBArow+2) = iG; + *(pRGBArow+3) = 0xFF; + } + + pWorkrow++; /* next pixel */ + pRGBArow += 4; + } + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + mng_uint8 multiplier[]={0,255,85,0,17,0,0,0,1}; /* LBR scaling */ + iG = (mng_uint8)(multiplier[pBuf->iBitdepth] * *pWorkrow); +#else + iG = *pWorkrow; /* get the gray-value */ +#endif + + *pRGBArow = iG; /* put in intermediate row */ + *(pRGBArow+1) = iG; + *(pRGBArow+2) = iG; + *(pRGBArow+3) = 0xFF; + + pWorkrow++; /* next pixel */ + pRGBArow += 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_retrieve_g16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint16 iG; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_G16, MNG_LC_START); +#endif + /* temporary work pointers */ + pRGBArow = pData->pRGBArow; + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + + if (pBuf->bHasTRNS) /* tRNS in buffer ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iG = mng_get_uint16 (pWorkrow); /* get the gray-value */ + /* is it transparent ? */ + if (iG == pBuf->iTRNSgray) + { /* nuttin to display */ + mng_put_uint16 (pRGBArow, 0x0000); + mng_put_uint16 (pRGBArow+2, 0x0000); + mng_put_uint16 (pRGBArow+4, 0x0000); + mng_put_uint16 (pRGBArow+6, 0x0000); + } + else + { /* put in intermediate row */ + mng_put_uint16 (pRGBArow, iG); + mng_put_uint16 (pRGBArow+2, iG); + mng_put_uint16 (pRGBArow+4, iG); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + } + + pWorkrow += 2; /* next pixel */ + pRGBArow += 8; + } + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iG = mng_get_uint16 (pWorkrow); /* get the gray-value */ + + mng_put_uint16 (pRGBArow, iG); /* and put in intermediate row */ + mng_put_uint16 (pRGBArow+2, iG); + mng_put_uint16 (pRGBArow+4, iG); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + + pWorkrow += 2; /* next pixel */ + pRGBArow += 8; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_retrieve_rgb8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iR, iG, iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB8, MNG_LC_START); +#endif + + pRGBArow = pData->pRGBArow; /* temporary work pointers */ + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + + if (pBuf->bHasTRNS) /* tRNS in buffer ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iR = *pWorkrow; /* get the rgb-values */ + iG = *(pWorkrow+1); + iB = *(pWorkrow+2); + /* is it transparent ? */ + if (((mng_uint16)iR == pBuf->iTRNSred ) && + ((mng_uint16)iG == pBuf->iTRNSgreen) && + ((mng_uint16)iB == pBuf->iTRNSblue ) ) + { + *pRGBArow = 0x00; /* nothing to display */ + *(pRGBArow+1) = 0x00; + *(pRGBArow+2) = 0x00; + *(pRGBArow+3) = 0x00; + } + else + { + *pRGBArow = iR; /* put in intermediate row */ + *(pRGBArow+1) = iG; + *(pRGBArow+2) = iB; + *(pRGBArow+3) = 0xFF; + } + + pWorkrow += 3; /* next pixel */ + pRGBArow += 4; + } + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pRGBArow = *pWorkrow; /* just copy the pixel */ + *(pRGBArow+1) = *(pWorkrow+1); + *(pRGBArow+2) = *(pWorkrow+2); + *(pRGBArow+3) = 0xFF; + + pWorkrow += 3; /* next pixel */ + pRGBArow += 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_retrieve_rgb16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint16 iR, iG, iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB16, MNG_LC_START); +#endif + /* temporary work pointers */ + pRGBArow = pData->pRGBArow; + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + + if (pBuf->bHasTRNS) /* tRNS in buffer ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iR = mng_get_uint16 (pWorkrow); /* get the rgb-values */ + iG = mng_get_uint16 (pWorkrow+2); + iB = mng_get_uint16 (pWorkrow+4); + /* is it transparent ? */ + if ((iR == pBuf->iTRNSred ) && + (iG == pBuf->iTRNSgreen) && + (iB == pBuf->iTRNSblue ) ) + { /* nothing to display */ + mng_put_uint16 (pRGBArow, 0x0000); + mng_put_uint16 (pRGBArow+2, 0x0000); + mng_put_uint16 (pRGBArow+4, 0x0000); + mng_put_uint16 (pRGBArow+6, 0x0000); + } + else + { /* put in intermediate row */ + mng_put_uint16 (pRGBArow, iR); + mng_put_uint16 (pRGBArow+2, iG); + mng_put_uint16 (pRGBArow+4, iB); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + } + + pWorkrow += 6; /* next pixel */ + pRGBArow += 8; + } + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* just copy the pixel */ + mng_put_uint16 (pRGBArow, mng_get_uint16 (pWorkrow )); + mng_put_uint16 (pRGBArow+2, mng_get_uint16 (pWorkrow+2)); + mng_put_uint16 (pRGBArow+4, mng_get_uint16 (pWorkrow+4)); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + + pWorkrow += 6; /* next pixel */ + pRGBArow += 8; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_retrieve_idx8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iQ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_IDX8, MNG_LC_START); +#endif + + pRGBArow = pData->pRGBArow; /* temporary work pointers */ + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + + if (pBuf->bHasTRNS) /* tRNS in buffer ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iQ = *pWorkrow; /* get the index */ + /* is it valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + *pRGBArow = pBuf->aPLTEentries [iQ].iRed; + *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; + *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; + /* transparency for this index ? */ + if ((mng_uint32)iQ < pBuf->iTRNScount) + *(pRGBArow+3) = pBuf->aTRNSentries [iQ]; + else + *(pRGBArow+3) = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pWorkrow++; /* next pixel */ + pRGBArow += 4; + } + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iQ = *pWorkrow; /* get the index */ + /* is it valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + *pRGBArow = pBuf->aPLTEentries [iQ].iRed; + *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; + *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; + *(pRGBArow+3) = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pWorkrow++; /* next pixel */ + pRGBArow += 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_IDX8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_retrieve_ga8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iG; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_GA8, MNG_LC_START); +#endif + + pRGBArow = pData->pRGBArow; /* temporary work pointers */ + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iG = *pWorkrow; /* get the gray-value */ + *pRGBArow = iG; /* put in intermediate row */ + *(pRGBArow+1) = iG; + *(pRGBArow+2) = iG; + *(pRGBArow+3) = *(pWorkrow+1); + + pWorkrow += 2; /* next pixel */ + pRGBArow += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_GA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_retrieve_ga16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint16 iG; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_GA16, MNG_LC_START); +#endif + /* temporary work pointers */ + pRGBArow = pData->pRGBArow; + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iG = mng_get_uint16 (pWorkrow); /* get the gray-value */ + + mng_put_uint16 (pRGBArow, iG); /* and put in intermediate row */ + mng_put_uint16 (pRGBArow+2, iG); + mng_put_uint16 (pRGBArow+4, iG); + mng_put_uint16 (pRGBArow+6, mng_get_uint16 (pWorkrow+2)); + + pWorkrow += 4; /* next pixel */ + pRGBArow += 8; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_retrieve_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA8, MNG_LC_START); +#endif + + pRGBArow = pData->pRGBArow; /* temporary work pointers */ + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + /* can't be easier than this ! */ + MNG_COPY (pRGBArow, pWorkrow, pBuf->iRowsize); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_retrieve_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA16, MNG_LC_START); +#endif + /* temporary work pointers */ + pRGBArow = pData->pRGBArow; + pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); + /* can't be easier than this ! */ + MNG_COPY (pRGBArow, pWorkrow, pBuf->iRowsize); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ +/* * * */ +/* * Row storage routines - store processed & uncompressed row-data * */ +/* * into the current "object" * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_store_g1 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G1, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* is it white ? */ + *pOutrow = 0x01; /* white */ + else + *pOutrow = 0x00; /* black */ + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 1; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_store_g2 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G2, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + + iQ = (mng_uint8)((iB & iM) >> iS); /* get the gray level */ + *pOutrow = iQ; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 2; + iS -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_store_g4 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G4, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + + iQ = (mng_uint8)((iB & iM) >> iS); /* get the gray level */ + *pOutrow = iQ; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 4; + iS -= 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_store_g8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_store_g16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* copy into object buffer */ + mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow)); + + pOutrow += (pData->iColinc << 1); /* next pixel */ + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_store_rgb8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGB8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* copy the RGB bytes */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + + pWorkrow += 3; /* next pixel */ + pOutrow += (pData->iColinc * 3); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_store_rgb16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGB16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + MNG_COPY (pOutrow, pWorkrow, 6); /* copy the RGB bytes */ + + pWorkrow += 6; /* next pixel */ + pOutrow += (pData->iColinc * 6); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_store_idx1 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX1, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* store the index */ + *pOutrow = 0x01; + else + *pOutrow = 0x00; + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 1; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_store_idx2 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX2, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + /* store the index */ + *pOutrow = (mng_uint8)((iB & iM) >> iS); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 2; + iS -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_store_idx4 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX4, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* store the index */ + *pOutrow = (mng_uint8)((iB & iM) >> iS); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 4; + iS -= 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_store_idx8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_IDX8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_store_ga8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_GA8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* copy the GA bytes */ + *(pOutrow+1) = *(pWorkrow+1); + + pWorkrow += 2; /* next pixel */ + pOutrow += (pData->iColinc << 1); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_GA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_store_ga16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_GA16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + MNG_COPY (pOutrow, pWorkrow, 4); /* copy the GA bytes */ + + pWorkrow += 4; /* next pixel */ + pOutrow += (pData->iColinc << 2); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_store_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGBA8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* copy the RGBA bytes */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + *(pOutrow+3) = *(pWorkrow+3); + + pWorkrow += 4; /* next pixel */ + pOutrow += (pData->iColinc << 2); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_store_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGBA16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + MNG_COPY (pOutrow, pWorkrow, 8); /* copy the RGBA bytes */ + + pWorkrow += 8; /* next pixel */ + pOutrow += (pData->iColinc << 3); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ +/* * * */ +/* * Row storage routines (JPEG) - store processed & uncompressed row-data * */ +/* * into the current "object" * */ +/* * * */ +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_g8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8, MNG_LC_START); +#endif + + pWorkrow = pData->pJPEGrow; /* temporary work pointers */ + pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); + /* easy as pie ... */ + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8, MNG_LC_END); +#endif + + return mng_next_jpeg_row (pData); /* we've got one more row of gray-samples */ +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_rgb8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; +#if RGB_PIXELSIZE != 3 + mng_int32 iX; +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8, MNG_LC_START); +#endif + + pWorkrow = pData->pJPEGrow; /* temporary work pointers */ + pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); + +#if RGB_PIXELSIZE == 3 + /* easy as pie ... */ + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples * 3); +#else +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* copy pixel into object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + + pOutrow += 3; /* next pixel */ + pWorkrow += RGB_PIXELSIZE; + } +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8, MNG_LC_END); +#endif + + return mng_next_jpeg_row (pData); /* we've got one more row of rgb-samples */ +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_ga8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_GA8, MNG_LC_START); +#endif + + pWorkrow = pData->pJPEGrow; /* temporary work pointers */ + pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* copy into object buffer */ + + pOutrow += 2; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_GA8, MNG_LC_END); +#endif + + return mng_next_jpeg_row (pData); /* we've got one more row of gray-samples */ +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGBA8, MNG_LC_START); +#endif + + pWorkrow = pData->pJPEGrow; /* temporary work pointers */ + pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* copy pixel into object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + + pOutrow += 4; /* next pixel */ + pWorkrow += RGB_PIXELSIZE; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGBA8, MNG_LC_END); +#endif + + return mng_next_jpeg_row (pData); /* we've got one more row of rgb-samples */ +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_g8_alpha (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_ALPHA, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pJPEGrow2; + pOutrow = pBuf->pImgdata + (pData->iJPEGalpharow * pBuf->iRowsize) + 1; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + + pOutrow += 2; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_ALPHA, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_rgb8_alpha (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_ALPHA, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pJPEGrow2; + pOutrow = pBuf->pImgdata + (pData->iJPEGalpharow * pBuf->iRowsize) + 3; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + + pOutrow += 4; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_ALPHA, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_store_jpeg_g8_a1 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A1, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 1; + iM = 0; /* start at pixel 0 */ + iB = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* is it opaque ? */ + *pOutrow = 0xFF; /* opaque */ + else + *pOutrow = 0x00; /* transparent */ + + pOutrow += 2; /* next pixel */ + iM >>= 1; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A1, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_g8_a2 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A2, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 1; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + { + const mng_uint8 alpha_level[4] = { 0x00, 0x55, 0xAA, 0xFF}; + *pOutrow = alpha_level[((iB & iM) >> iS)] ; + } +#else + switch ((iB & iM) >> iS) /* determine the alpha level */ + { + case 0x03 : { *pOutrow = 0xFF; break; } + case 0x02 : { *pOutrow = 0xAA; break; } + case 0x01 : { *pOutrow = 0x55; break; } + default : { *pOutrow = 0x00; } + } +#endif + + pOutrow += 2; /* next pixel */ + iM >>= 2; + iS -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A2, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_g8_a4 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A4, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 1; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the alpha level */ + iQ = (mng_uint8)((iB & iM) >> iS); + iQ = (mng_uint8)(iQ + (iQ << 4)); /* expand to 8-bit by replication */ + + *pOutrow = iQ; /* put in object buffer */ + + pOutrow += 2; /* next pixel */ + iM >>= 4; + iS -= 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A4, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_g8_a8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 1; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + + pOutrow += 2; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A8, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_store_jpeg_g8_a16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 1; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* only high-order byte! */ + + pOutrow += 2; /* next pixel */ + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A16, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_store_jpeg_rgb8_a1 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A1, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 3; + iM = 0; /* start at pixel 0 */ + iB = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* is it opaque ? */ + *pOutrow = 0xFF; /* opaque */ + else + *pOutrow = 0x00; /* transparent */ + + pOutrow += 4; /* next pixel */ + iM >>= 1; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A1, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_rgb8_a2 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A2, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 3; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + { + const mng_uint8 alpha_level[4] = { 0x00, 0x55, 0xAA, 0xFF}; + *pOutrow = alpha_level[((iB & iM) >> iS)] ; + } +#else + switch ((iB & iM) >> iS) /* determine the alpha level */ + { + case 0x03 : { *pOutrow = 0xFF; break; } + case 0x02 : { *pOutrow = 0xAA; break; } + case 0x01 : { *pOutrow = 0x55; break; } + default : { *pOutrow = 0x00; } + } +#endif + + pOutrow += 4; /* next pixel */ + iM >>= 2; + iS -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A2, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_rgb8_a4 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A4, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 3; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the alpha level */ + iQ = (mng_uint8)((iB & iM) >> iS); + iQ = (mng_uint8)(iQ + (iQ << 4)); /* expand to 8-bit by replication */ + + *pOutrow = iQ; /* put in object buffer */ + + pOutrow += 4; /* next pixel */ + iM >>= 4; + iS -= 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A4, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_store_jpeg_rgb8_a8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 3; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in buffer */ + + pOutrow += 4; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A8, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_store_jpeg_rgb8_a16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 3; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* only high-order byte */ + + pOutrow += 4; /* next pixel */ + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A16, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_JPEG12 +mng_retcode mng_store_jpeg_g12_a1 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A1, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 2; + iM = 0; /* start at pixel 0 */ + iB = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* opaque ? */ + mng_put_uint16 (pOutrow, 0xFFFF);/* opaque */ + else + mng_put_uint16 (pOutrow, 0x0000);/* transparent */ + + pOutrow += 4; /* next pixel */ + iM >>= 1; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A1, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif /* MNG_SUPPORT_JPEG12 */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_JPEG12 +mng_retcode mng_store_jpeg_g12_a2 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A2, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 2; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + { + const mng_uint16 gray_level[4] = { 0x0000, 0x5555, 0xAAAA, 0xFFFF}; + mng_put_uint16 (pOutrow, gray_level[((iB & iM) >> iS)]) ; + } +#else + switch ((iB & iM) >> iS) /* determine the gray level */ + { + case 0x03 : { mng_put_uint16 (pOutrow, 0xFFFF); break; } + case 0x02 : { mng_put_uint16 (pOutrow, 0xAAAA); break; } + case 0x01 : { mng_put_uint16 (pOutrow, 0x5555); break; } + default : { mng_put_uint16 (pOutrow, 0x0000); } + } +#endif + + pOutrow += 4; /* next pixel */ + iM >>= 2; + iS -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A2, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif /* MNG_SUPPORT_JPEG12 */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_JPEG12 +mng_retcode mng_store_jpeg_g12_a4 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint16 iQ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A4, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 2; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the gray level */ + iQ = (mng_uint16)((iB & iM) >> iS); + iQ = (mng_uint16)(iQ + (iQ << 4)); /* expand to 16-bit by replication */ + iQ = (mng_uint16)(iQ + (iQ << 8)); + /* put in object buffer */ + mng_put_uint16 (pOutrow, iQ); + + pOutrow += 4; /* next pixel */ + iM >>= 4; + iS -= 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A4, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif /* MNG_SUPPORT_JPEG12 */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_JPEG12 +mng_retcode mng_store_jpeg_g12_a8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 2; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iW = (mng_uint16)(*pWorkrow); /* get input byte */ + iW = (mng_uint16)(iW + (iW << 8)); /* expand to 16-bit by replication */ + + mng_put_uint16 (pOutrow, iW); /* put in object buffer */ + + pOutrow += 4; /* next pixel */ + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A8, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif /* MNG_SUPPORT_JPEG12 */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_JPEG12 +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_store_jpeg_g12_a16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 2; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* copy it */ + mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow)); + + pOutrow += 4; /* next pixel */ + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A16, MNG_LC_END); +#endif + /* we've got one more row of alpha-samples */ + return mng_next_jpeg_alpharow (pData); +} +#endif +#endif /* MNG_SUPPORT_JPEG12 */ + +/* ************************************************************************** */ + +#endif /* MNG_INCLUDE_JNG */ + +#ifndef MNG_NO_DELTA_PNG +/* ************************************************************************** */ +/* * * */ +/* * Delta-image row routines - apply the processed & uncompressed row-data * */ +/* * onto the target "object" * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_delta_g1 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G1, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* is it white ? */ + *pOutrow = 0xFF; /* white */ + else + *pOutrow = 0x00; /* black */ + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 1; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* invert if it is white ? */ + *pOutrow = (mng_uint8)(*pOutrow ^ 0xFF); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 1; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G1, MNG_LC_END); +#endif + + return mng_store_g1 (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_g2 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + const mng_uint8 level[4] = { 0x00, 0x55, 0xAA, 0xFF}; +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G2, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + *pOutrow = level[((iB & iM) >> iS)] ; +#else + switch ((iB & iM) >> iS) /* determine the alpha level */ + { + case 0x03 : { *pOutrow = 0xFF; break; } + case 0x02 : { *pOutrow = 0xAA; break; } + case 0x01 : { *pOutrow = 0x55; break; } + default : { *pOutrow = 0x00; } + } +#endif + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 2; + iS -= 2; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + *pOutrow = level[((*pOutrow >> 6) + ((iB & iM) >> iS)) & 0x03] ; +#else + switch (((*pOutrow >> 6) + ((iB & iM) >> iS)) & 0x03) + { + case 0x03 : { *pOutrow = 0xFF; break; } + case 0x02 : { *pOutrow = 0xAA; break; } + case 0x01 : { *pOutrow = 0x55; break; } + default : { *pOutrow = 0x00; } + } +#endif + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 2; + iS -= 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G2, MNG_LC_END); +#endif + + return mng_store_g2 (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_g4 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G4, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the gray level */ + iQ = (mng_uint8)((iB & iM) >> iS); + /* expand to 8-bit by replication */ + iQ = (mng_uint8)(iQ + (iQ << 4)); + + *pOutrow = iQ; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 4; + iS -= 4; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the gray level */ + iQ = (mng_uint8)(((*pOutrow >> 4) + ((iB & iM) >> iS)) & 0x0F); + /* expand to 8-bit by replication */ + iQ = (mng_uint8)(iQ + (iQ << 4)); + + *pOutrow = iQ; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 4; + iS -= 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G4, MNG_LC_END); +#endif + + return mng_store_g4 (pData); +} +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_delta_g8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + pWorkrow++; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow); + + pOutrow += pData->iColinc; /* next pixel */ + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G8, MNG_LC_END); +#endif + + return mng_store_g8 (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_g16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + /* next pixel */ + pOutrow += (pData->iColinc << 1); + pWorkrow += 2; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow) )); + /* next pixel */ + pOutrow += (pData->iColinc << 1); + pWorkrow += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G16, MNG_LC_END); +#endif + + return mng_store_g16 (pData); +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_delta_rgb8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + /* next pixel */ + pOutrow += (pData->iColinc * 3); + pWorkrow += 3; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow ); + *(pOutrow+1) = (mng_uint8)(*(pOutrow+1) + *(pWorkrow+1)); + *(pOutrow+2) = (mng_uint8)(*(pOutrow+2) + *(pWorkrow+2)); + /* next pixel */ + pOutrow += (pData->iColinc * 3); + pWorkrow += 3; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB8, MNG_LC_END); +#endif + + return mng_store_rgb8 (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_rgb16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + *(pOutrow+3) = *(pWorkrow+3); + *(pOutrow+4) = *(pWorkrow+4); + *(pOutrow+5) = *(pWorkrow+5); + /* next pixel */ + pOutrow += (pData->iColinc * 6); + pWorkrow += 6; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow ) )); + mng_put_uint16 (pOutrow+2, (mng_uint16)(mng_get_uint16 (pOutrow+2 ) + + mng_get_uint16 (pWorkrow+2) )); + mng_put_uint16 (pOutrow+4, (mng_uint16)(mng_get_uint16 (pOutrow+4 ) + + mng_get_uint16 (pWorkrow+4) )); + /* next pixel */ + pOutrow += (pData->iColinc * 6); + pWorkrow += 6; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB16, MNG_LC_END); +#endif + + return mng_store_rgb16 (pData); +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_delta_idx1 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX1, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* put the right index value */ + *pOutrow = 1; + else + *pOutrow = 0; + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 1; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* invert if it is non-zero index */ + *pOutrow = (mng_uint8)(*pOutrow ^ 0x01); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 1; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX1, MNG_LC_END); +#endif + + return mng_store_idx1 (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_idx2 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX2, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + /* put the index */ + *pOutrow = (mng_uint8)((iB & iM) >> iS); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 2; + iS -= 2; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + /* calculate the index */ + *pOutrow = (mng_uint8)((*pOutrow + ((iB & iM) >> iS)) & 0x03); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 2; + iS -= 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX2, MNG_LC_END); +#endif + + return mng_store_idx2 (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_idx4 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX4, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* put the index */ + *pOutrow = (mng_uint8)((iB & iM) >> iS); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 4; + iS -= 4; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* calculate the index */ + *pOutrow = (mng_uint8)((*pOutrow + ((iB & iM) >> iS)) & 0x0F); + + pOutrow += pData->iColinc; /* next pixel */ + iM >>= 4; + iS -= 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX4, MNG_LC_END); +#endif + + return mng_store_idx4 (pData); +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_delta_idx8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + + pOutrow += pData->iColinc; /* next pixel */ + pWorkrow++; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow); + + pOutrow += pData->iColinc; /* next pixel */ + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_IDX8, MNG_LC_END); +#endif + + return mng_store_idx8 (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_ga8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + /* next pixel */ + pOutrow += (pData->iColinc << 1); + pWorkrow += 2; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow ); + *(pOutrow+1) = (mng_uint8)(*(pOutrow+1) + *(pWorkrow+1)); + /* next pixel */ + pOutrow += (pData->iColinc << 1); + pWorkrow += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8, MNG_LC_END); +#endif + + return mng_store_ga8 (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_ga16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + *(pOutrow+3) = *(pWorkrow+3); + /* next pixel */ + pOutrow += (pData->iColinc << 2); + pWorkrow += 4; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow ) )); + mng_put_uint16 (pOutrow+2, (mng_uint16)(mng_get_uint16 (pOutrow+2 ) + + mng_get_uint16 (pWorkrow+2) )); + /* next pixel */ + pOutrow += (pData->iColinc << 2); + pWorkrow += 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16, MNG_LC_END); +#endif + + return mng_store_ga16 (pData); +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_delta_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; /* put in object buffer */ + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + *(pOutrow+3) = *(pWorkrow+3); + /* next pixel */ + pOutrow += (pData->iColinc << 2); + pWorkrow += 4; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow ); + *(pOutrow+1) = (mng_uint8)(*(pOutrow+1) + *(pWorkrow+1)); + *(pOutrow+2) = (mng_uint8)(*(pOutrow+2) + *(pWorkrow+2)); + *(pOutrow+3) = (mng_uint8)(*(pOutrow+3) + *(pWorkrow+3)); + /* next pixel */ + pOutrow += (pData->iColinc << 2); + pWorkrow += 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8, MNG_LC_END); +#endif + + return mng_store_rgba8 (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iDeltaBlocky * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + + (pData->iDeltaBlockx * pBuf->iSamplesize); + /* pixel replace ? */ + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + MNG_COPY (pOutrow, pWorkrow, 8); /* put in object buffer */ + /* next pixel */ + pOutrow += (pData->iColinc << 3); + pWorkrow += 8; + } + } + else + { /* pixel add ! */ +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* add to object buffer */ + mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow ) )); + mng_put_uint16 (pOutrow+2, (mng_uint16)(mng_get_uint16 (pOutrow+2 ) + + mng_get_uint16 (pWorkrow+2) )); + mng_put_uint16 (pOutrow+4, (mng_uint16)(mng_get_uint16 (pOutrow+4 ) + + mng_get_uint16 (pWorkrow+4) )); + mng_put_uint16 (pOutrow+6, (mng_uint16)(mng_get_uint16 (pOutrow+6 ) + + mng_get_uint16 (pWorkrow+6) )); + /* next pixel */ + pOutrow += (pData->iColinc << 3); + pWorkrow += 8; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16, MNG_LC_END); +#endif + + return mng_store_rgba16 (pData); +} +#endif + +/* ************************************************************************** */ +/* * * */ +/* * Delta-image row routines - apply the source row onto the target * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_delta_g1_g1 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G1_G1, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0x01); + + pOutrow++; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G1_G1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_g2_g2 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G2_G2, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0x03); + + pOutrow++; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G2_G2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_g4_g4 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G4_G4, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0x0F); + + pOutrow++; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G4_G4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_delta_g8_g8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G8_G8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0xFF); + + pOutrow++; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G8_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_g16_g16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G16_G16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples << 1)); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow) + + mng_get_uint16 (pWorkrow)) & 0xFFFF)); + + pOutrow += 2; + pWorkrow += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_G16_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif /* MNG_NO_DELTA_PNG */ + +/* ************************************************************************** */ + +mng_retcode mng_delta_rgb8_rgb8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB8_RGB8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples * 3); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples*3; iX > 0; iX--) +#else + for (iX = 0; iX < (pData->iRowsamples * 3); iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0xFF); + + pOutrow++; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB8_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_rgb16_rgb16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB16_RGB16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples * 6)); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow )) & 0xFFFF)); + mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); + mng_put_uint16 (pOutrow+4, (mng_uint16)((mng_get_uint16 (pOutrow+4) + + mng_get_uint16 (pWorkrow+4)) & 0xFFFF)); + + pOutrow += 6; + pWorkrow += 6; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGB16_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +mng_retcode mng_delta_ga8_ga8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8_GA8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples << 1); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = (pData->iRowsamples<<1); iX > 0; iX--) +#else + for (iX = 0; iX < (pData->iRowsamples << 1); iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0xFF); + + pOutrow++; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8_GA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_ga8_g8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8_G8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; + + pOutrow += 2; + pWorkrow++; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0xFF); + + pOutrow += 2; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_ga8_a8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8_A8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 1; + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; + + pOutrow += 2; + pWorkrow++; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0xFF); + + pOutrow += 2; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA8_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_ga16_ga16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16_GA16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples << 2)); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow )) & 0xFFFF)); + mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); + + pOutrow += 4; + pWorkrow += 4; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_ga16_g16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16_G16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow)); + + pOutrow += 4; + pWorkrow += 2; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow) + + mng_get_uint16 (pWorkrow)) & 0xFFFF)); + + pOutrow += 4; + pWorkrow += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_ga16_a16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16_A16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow+2, mng_get_uint16 (pWorkrow)); + + pOutrow += 4; + pWorkrow += 2; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + + mng_get_uint16 (pWorkrow)) & 0xFFFF)); + + pOutrow += 4; + pWorkrow += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_GA16_A16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif /* MNG_NO_DELTA_PNG */ + +/* ************************************************************************** */ + +mng_retcode mng_delta_rgba8_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGBA8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples << 2); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = (pData->iRowsamples << 2); iX > 0; iX--) +#else + for (iX = 0; iX < (pData->iRowsamples << 2); iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0xFF); + + pOutrow++; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +mng_retcode mng_delta_rgba8_rgb8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGB8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + + pOutrow += 4; + pWorkrow += 3; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow ) & 0xFF); + *(pOutrow+1) = (mng_uint8)(((mng_uint16)*(pOutrow+1) + + (mng_uint16)*(pWorkrow+1)) & 0xFF); + *(pOutrow+2) = (mng_uint8)(((mng_uint16)*(pOutrow+2) + + (mng_uint16)*(pWorkrow+2)) & 0xFF); + + pOutrow += 4; + pWorkrow += 3; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_delta_rgba8_a8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_A8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize) + 3; + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = *pWorkrow; + + pOutrow += 4; + pWorkrow++; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + + (mng_uint16)*pWorkrow) & 0xFF); + + pOutrow += 4; + pWorkrow++; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_A8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_DELTA_PNG */ + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_rgba16_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGBA16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples << 3)); + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow )) & 0xFFFF)); + mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); + mng_put_uint16 (pOutrow+4, (mng_uint16)((mng_get_uint16 (pOutrow+4) + + mng_get_uint16 (pWorkrow+4)) & 0xFFFF)); + mng_put_uint16 (pOutrow+6, (mng_uint16)((mng_get_uint16 (pOutrow+6) + + mng_get_uint16 (pWorkrow+6)) & 0xFFFF)); + + pOutrow += 8; + pWorkrow += 8; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_rgba16_rgb16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGB16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow )); + mng_put_uint16 (pOutrow+2, mng_get_uint16 (pWorkrow+2)); + mng_put_uint16 (pOutrow+4, mng_get_uint16 (pWorkrow+4)); + + pOutrow += 8; + pWorkrow += 6; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + + mng_get_uint16 (pWorkrow )) & 0xFFFF)); + mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); + mng_put_uint16 (pOutrow+4, (mng_uint16)((mng_get_uint16 (pOutrow+4) + + mng_get_uint16 (pWorkrow+4)) & 0xFFFF)); + + pOutrow += 8; + pWorkrow += 6; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_delta_rgba16_a16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_A16, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow+6, mng_get_uint16 (pWorkrow)); + + pOutrow += 8; + pWorkrow += 2; + } + } + else + if (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + mng_put_uint16 (pOutrow+6, (mng_uint16)((mng_get_uint16 (pOutrow+6) + + mng_get_uint16 (pWorkrow)) & 0xFFFF)); + + pOutrow += 8; + pWorkrow += 2; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_A16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif /* MNG_NO_DELTA_PNG */ + +/* ************************************************************************** */ +/* * * */ +/* * Delta-image row routines - scale the delta to bitdepth of target * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_scale_g1_g2 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G2, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow << 1); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_g1_g4 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G4, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow << 3); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_g1_g8 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow << 7); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_g1_g16 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G16, MNG_LC_START); +#endif + + pWorkrow = pWorkrow + (pData->iRowsamples - 1); + pOutrow = pOutrow + ((pData->iRowsamples - 1) << 1); +/* pWorkrow = (mng_uint8p)((mng_uint32)pWorkrow + pData->iRowsamples - 1); */ +/* pOutrow = (mng_uint8p)((mng_uint32)pOutrow + ((pData->iRowsamples - 1) << 1)); */ + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *(pOutrow+1) = 0; + *pOutrow = (mng_uint8)(*pWorkrow << 7); + + pWorkrow--; + pOutrow -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G1_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_scale_g2_g4 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G4, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow << 2); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_g2_g8 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow << 6); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_g2_g16 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G16, MNG_LC_START); +#endif + + pWorkrow = pWorkrow + (pData->iRowsamples - 1); + pOutrow = pOutrow + ((pData->iRowsamples - 1) << 1); +/* pWorkrow = (mng_uint8p)((mng_uint32)pWorkrow + pData->iRowsamples - 1); */ +/* pOutrow = (mng_uint8p)((mng_uint32)pOutrow + ((pData->iRowsamples - 1) << 1)); */ + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *(pOutrow+1) = 0; + *pOutrow = (mng_uint8)(*pWorkrow << 6); + + pWorkrow--; + pOutrow -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_scale_g4_g8 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow << 4); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_g4_g16 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G16, MNG_LC_START); +#endif + + pWorkrow = pWorkrow + (pData->iRowsamples - 1); + pOutrow = pOutrow + ((pData->iRowsamples - 1) << 1); +/* pWorkrow = (mng_uint8p)((mng_uint32)pWorkrow + pData->iRowsamples - 1); */ +/* pOutrow = (mng_uint8p)((mng_uint32)pOutrow + ((pData->iRowsamples - 1) << 1)); */ + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *(pOutrow+1) = 0; + *pOutrow = (mng_uint8)(*pWorkrow << 4); + + pWorkrow--; + pOutrow -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_g8_g16 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G16, MNG_LC_START); +#endif + + pWorkrow = pWorkrow + (pData->iRowsamples - 1); + pOutrow = pOutrow + ((pData->iRowsamples - 1) << 1); +/* pWorkrow = (mng_uint8p)((mng_uint32)pWorkrow + pData->iRowsamples - 1); */ +/* pOutrow = (mng_uint8p)((mng_uint32)pOutrow + ((pData->iRowsamples - 1) << 1)); */ + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *(pOutrow+1) = 0; + *pOutrow = *pWorkrow; + + pWorkrow--; + pOutrow -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_ga8_ga16 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_GA8_GA16, MNG_LC_START); +#endif + + pWorkrow = pWorkrow + ((pData->iRowsamples - 1) << 1); + pOutrow = pOutrow + ((pData->iRowsamples - 1) << 2); +/* pWorkrow = (mng_uint8p)((mng_uint32)pWorkrow + ((pData->iRowsamples - 1) << 1)); */ +/* pOutrow = (mng_uint8p)((mng_uint32)pOutrow + ((pData->iRowsamples - 1) << 2)); */ + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *(pOutrow+3) = 0; + *(pOutrow+2) = *(pWorkrow+1); + *(pOutrow+1) = 0; + *pOutrow = *pWorkrow; + + pWorkrow -= 2; + pOutrow -= 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_GA8_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_rgb8_rgb16 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGB8_RGB16, MNG_LC_START); +#endif + + pWorkrow = pWorkrow + (3 * (pData->iRowsamples - 1)); + pOutrow = pOutrow + (6 * (pData->iRowsamples - 1)); +/* pWorkrow = (mng_uint8p)((mng_uint32)pWorkrow + 3 * (pData->iRowsamples - 1)); */ +/* pOutrow = (mng_uint8p)((mng_uint32)pOutrow + 6 * (pData->iRowsamples - 1)); */ + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *(pOutrow+5) = 0; + *(pOutrow+4) = *(pWorkrow+2); + *(pOutrow+3) = 0; + *(pOutrow+2) = *(pWorkrow+1); + *(pOutrow+1) = 0; + *pOutrow = *pWorkrow; + + pWorkrow -= 3; + pOutrow -= 6; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGB8_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_rgba8_rgba16 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGBA8_RGBA16, MNG_LC_START); +#endif + + pWorkrow = pWorkrow + ((pData->iRowsamples - 1) << 2); + pOutrow = pOutrow + ((pData->iRowsamples - 1) << 3); +/* pWorkrow = (mng_uint8p)((mng_uint32)pWorkrow + ((pData->iRowsamples - 1) << 2)); */ +/* pOutrow = (mng_uint8p)((mng_uint32)pOutrow + ((pData->iRowsamples - 1) << 3)); */ + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *(pOutrow+7) = 0; + *(pOutrow+6) = *(pWorkrow+3); + *(pOutrow+5) = 0; + *(pOutrow+4) = *(pWorkrow+2); + *(pOutrow+3) = 0; + *(pOutrow+2) = *(pWorkrow+1); + *(pOutrow+1) = 0; + *pOutrow = *pWorkrow; + + pWorkrow -= 4; + pOutrow -= 8; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGBA8_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_scale_g2_g1 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G1, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow >> 1); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G2_G1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_g4_g1 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G1, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow >> 3); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_g8_g1 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G1, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow >> 7); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_g16_g1 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G1, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 15); + pOutrow++; + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_scale_g4_g2 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G2, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow >> 2); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G4_G2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_g8_g2 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G2, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow >> 6); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_g16_g2 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G2, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 14); + pOutrow++; + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_scale_g8_g4 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G4, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pWorkrow = (mng_uint8)(*pWorkrow >> 4); + pWorkrow++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G8_G4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_scale_g16_g4 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G4, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 12); + pOutrow++; + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif /* NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_scale_g16_g8 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_G16_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_ga16_ga8 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_GA16_GA8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_GA16_GA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_rgb16_rgb8 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGB16_RGB8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGB16_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_scale_rgba16_rgba8 (mng_datap pData) +{ + mng_uint8p pWorkrow = pData->pRGBArow; + mng_uint8p pOutrow = pData->pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGBA16_RGBA8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + *pOutrow = (mng_uint8)(mng_get_uint16 (pWorkrow) >> 8); + pOutrow++; + pWorkrow += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SCALE_RGBA16_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ +/* * * */ +/* * Delta-image bit routines - promote bit_depth * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_uint8 mng_promote_replicate_1_2 (mng_uint8 iB) +{ + return (mng_uint8)((iB << 1) | iB); +} + +/* ************************************************************************** */ + +mng_uint8 mng_promote_replicate_1_4 (mng_uint8 iB) +{ + iB = (mng_uint8)((iB << 1) + iB); + return (mng_uint8)((iB << 2) + iB); +} + +/* ************************************************************************** */ + +mng_uint8 mng_promote_replicate_1_8 (mng_uint8 iB) +{ + iB = (mng_uint8)((iB << 1) + iB); + iB = (mng_uint8)((iB << 2) + iB); + return (mng_uint8)((iB << 4) + iB); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_replicate_1_16 (mng_uint8 iB) +{ + iB = (mng_uint8)((iB << 1) + iB); + iB = (mng_uint8)((iB << 2) + iB); + iB = (mng_uint8)((iB << 4) + iB); + return (mng_uint16)(((mng_uint16)iB << 8) + (mng_uint16)iB); +} +#endif + +/* ************************************************************************** */ + +mng_uint8 mng_promote_replicate_2_4 (mng_uint8 iB) +{ + return (mng_uint8)((iB << 2) + iB); +} + +/* ************************************************************************** */ + +mng_uint8 mng_promote_replicate_2_8 (mng_uint8 iB) +{ + iB = (mng_uint8)((iB << 2) + iB); + return (mng_uint8)((iB << 4) + iB); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_replicate_2_16 (mng_uint8 iB) +{ + iB = (mng_uint8)((iB << 2) + iB); + iB = (mng_uint8)((iB << 4) + iB); + return (mng_uint16)(((mng_uint16)iB << 8) + (mng_uint16)iB); +} +#endif + +/* ************************************************************************** */ + +mng_uint8 mng_promote_replicate_4_8 (mng_uint8 iB) +{ + return (mng_uint8)((iB << 4) + iB); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_replicate_4_16 (mng_uint8 iB) +{ + iB = (mng_uint8)((iB << 4) + iB); + return (mng_uint16)(((mng_uint16)iB << 8) + (mng_uint16)iB); +} +#endif +#endif /* NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_replicate_8_16 (mng_uint8 iB) +{ + return (mng_uint16)(((mng_uint16)iB << 8) + (mng_uint16)iB); +} +#endif + +/* ************************************************************************** */ + +#if !defined(MNG_NO_DELTA_PNG) +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_uint8 mng_promote_zerofill_1_2 (mng_uint8 iB) +{ + return (mng_uint8)(iB << 1); +} + +/* ************************************************************************** */ + +mng_uint8 mng_promote_zerofill_1_4 (mng_uint8 iB) +{ + return (mng_uint8)(iB << 3); +} + +/* ************************************************************************** */ + +mng_uint8 mng_promote_zerofill_1_8 (mng_uint8 iB) +{ + return (mng_uint8)(iB << 7); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_zerofill_1_16 (mng_uint8 iB) +{ + return (mng_uint16)((mng_uint16)iB << 15); +} +#endif + +/* ************************************************************************** */ + +mng_uint8 mng_promote_zerofill_2_4 (mng_uint8 iB) +{ + return (mng_uint8)(iB << 2); +} + +/* ************************************************************************** */ + +mng_uint8 mng_promote_zerofill_2_8 (mng_uint8 iB) +{ + return (mng_uint8)(iB << 6); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_zerofill_2_16 (mng_uint8 iB) +{ + return (mng_uint16)((mng_uint16)iB << 14); +} +#endif + +/* ************************************************************************** */ + +mng_uint8 mng_promote_zerofill_4_8 (mng_uint8 iB) +{ + return (mng_uint8)(iB << 4); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_zerofill_4_16 (mng_uint8 iB) +{ + return (mng_uint16)((mng_uint16)iB << 12); +} +#endif +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_uint16 mng_promote_zerofill_8_16 (mng_uint8 iB) +{ + return (mng_uint16)((mng_uint16)iB << 8); +} +#endif +#endif /* MNG_NO_DELTA_PNG */ + +/* ************************************************************************** */ +/* * * */ +/* * Delta-image row routines - promote color_type * */ +/* * * */ +/* ************************************************************************** */ + +#if !defined(MNG_NO_DELTA_PNG) || !defined(MNG_SKIPCHUNK_PAST) || !defined(MNG_SKIPCHUNK_MAGN) +mng_retcode mng_promote_g8_g8 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_G8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + if (pData->fPromBitdepth) /* bitdepth promoted ? */ + iB = ((mng_bitdepth_8)pData->fPromBitdepth) (iB); + *pDstline = iB; + + pSrcline++; + pDstline++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_g8_g16 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_G16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iW = ((mng_bitdepth_16)pData->fPromBitdepth) (*pSrcline); + + *pDstline = (mng_uint8)(iW >> 8); + *(pDstline+1) = (mng_uint8)(iW && 0xFF); + + pSrcline++; + pDstline += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_promote_g16_g16 (mng_datap pData) +{ + mng_uint16p pSrcline = (mng_uint16p)pData->pPromSrc; + mng_uint16p pDstline = (mng_uint16p)pData->pPromDst; + mng_uint32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_G16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + *pDstline = *pSrcline; + pSrcline++; + pDstline++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_promote_g8_ga8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_GA8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || ((mng_uint16)iB != pBuf->iTRNSgray)) + *(pDstline+1) = 0xFF; + + if (pData->fPromBitdepth) /* bitdepth promoted ? */ + iB = ((mng_bitdepth_8)pData->fPromBitdepth) (iB); + + *pDstline = iB; + + pSrcline++; + pDstline += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_GA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_g8_ga16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_GA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || ((mng_uint16)iB != pBuf->iTRNSgray)) + { + *(pDstline+2) = 0xFF; + *(pDstline+3) = 0xFF; + } + + iW = ((mng_bitdepth_16)pData->fPromBitdepth) (iB); + + *pDstline = (mng_uint8)(iW >> 8); + *(pDstline+1) = (mng_uint8)(iW && 0xFF); + + pSrcline++; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_g16_ga16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint16p pSrcline = (mng_uint16p)pData->pPromSrc; + mng_uint16p pDstline = (mng_uint16p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_GA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iW = *pSrcline; + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || ((mng_uint16)iW != pBuf->iTRNSgray)) + *(pDstline+1) = 0xFFFF; + + *pDstline = iW; + + pSrcline++; + pDstline += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_promote_g8_rgb8 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGB8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + + if (pData->fPromBitdepth) /* bitdepth promoted ? */ + iB = ((mng_bitdepth_8)pData->fPromBitdepth) (iB); + + *pDstline = iB; + *(pDstline+1) = iB; + *(pDstline+2) = iB; + + pSrcline++; + pDstline += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_g8_rgb16 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGB16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + iW = ((mng_bitdepth_16)pData->fPromBitdepth) (iB); + + iB = (mng_uint8)(iW >> 8); + *pDstline = iB; + *(pDstline+2) = iB; + *(pDstline+4) = iB; + iB = (mng_uint8)(iW && 0xFF); + *(pDstline+1) = iB; + *(pDstline+3) = iB; + *(pDstline+5) = iB; + + pSrcline++; + pDstline += 6; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_g16_rgb16 (mng_datap pData) +{ + mng_uint16p pSrcline = (mng_uint16p)pData->pPromSrc; + mng_uint16p pDstline = (mng_uint16p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_RGB16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iW = *pSrcline; + + *pDstline = iW; + *(pDstline+1) = iW; + *(pDstline+2) = iW; + + pSrcline++; + pDstline += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_promote_g8_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGBA8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || ((mng_uint16)iB != pBuf->iTRNSgray)) + *(pDstline+3) = 0xFF; + + if (pData->fPromBitdepth) /* bitdepth promoted ? */ + iB = ((mng_bitdepth_8)pData->fPromBitdepth) (iB); + + *pDstline = iB; + *(pDstline+1) = iB; + *(pDstline+2) = iB; + + pSrcline++; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_g8_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || ((mng_uint16)iB != pBuf->iTRNSgray)) + { + *(pDstline+6) = 0xFF; + *(pDstline+7) = 0xFF; + } + + iW = ((mng_bitdepth_16)pData->fPromBitdepth) (iB); + + iB = (mng_uint8)(iW >> 8); + *pDstline = iB; + *(pDstline+2) = iB; + *(pDstline+4) = iB; + iB = (mng_uint8)(iW && 0xFF); + *(pDstline+1) = iB; + *(pDstline+3) = iB; + *(pDstline+5) = iB;; + + pSrcline++; + pDstline += 8; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G8_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_g16_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint16p pSrcline = (mng_uint16p)pData->pPromSrc; + mng_uint16p pDstline = (mng_uint16p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iW = *pSrcline; + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || (iW != pBuf->iTRNSgray)) + *(pDstline+3) = 0xFFFF; + + *pDstline = iW; + *(pDstline+1) = iW; + *(pDstline+2) = iW; + + pSrcline++; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_G16_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_ga8_ga16 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iW; + mng_uint16 iA; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA8_GA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iW = ((mng_bitdepth_16)pData->fPromBitdepth) (*pSrcline); + iA = ((mng_bitdepth_16)pData->fPromBitdepth) (*(pSrcline+1)); + + *pDstline = (mng_uint8)(iW >> 8); + *(pDstline+1) = (mng_uint8)(iW && 0xFF); + *(pDstline+2) = (mng_uint8)(iA >> 8); + *(pDstline+3) = (mng_uint8)(iA && 0xFF); + + pSrcline += 2; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA8_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_promote_ga8_rgba8 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + mng_uint8 iA; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA8_RGBA8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + iA = *(pSrcline+1); + + *pDstline = iB; + *(pDstline+1) = iB; + *(pDstline+2) = iB; + *(pDstline+3) = iA; + + pSrcline += 2; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA8_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_ga8_rgba16 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + mng_uint16 iW; + mng_uint16 iA; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA8_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iW = ((mng_bitdepth_16)pData->fPromBitdepth) (*pSrcline); + iA = ((mng_bitdepth_16)pData->fPromBitdepth) (*(pSrcline+1)); + + iB = (mng_uint8)(iW >> 8); + *pDstline = iB; + *(pDstline+2) = iB; + *(pDstline+4) = iB; + iB = (mng_uint8)(iW && 0xFF); + *(pDstline+1) = iB; + *(pDstline+3) = iB; + *(pDstline+5) = iB; + *(pDstline+6) = (mng_uint8)(iA >> 8); + *(pDstline+7) = (mng_uint8)(iA && 0xFF); + + pSrcline += 2; + pDstline += 8; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA8_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_ga16_rgba16 (mng_datap pData) +{ + mng_uint16p pSrcline = (mng_uint16p)pData->pPromSrc; + mng_uint16p pDstline = (mng_uint16p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iW; + mng_uint16 iA; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA16_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iW = *pSrcline; + iA = *(pSrcline+1); + + *pDstline = iW; + *(pDstline+1) = iW; + *(pDstline+2) = iW; + *(pDstline+3) = iA; + + pSrcline += 2; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_GA16_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_rgb8_rgb16 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iR; + mng_uint16 iG; + mng_uint16 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB8_RGB16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iR = ((mng_bitdepth_16)pData->fPromBitdepth) (*pSrcline); + iG = ((mng_bitdepth_16)pData->fPromBitdepth) (*(pSrcline+1)); + iB = ((mng_bitdepth_16)pData->fPromBitdepth) (*(pSrcline+2)); + + *pDstline = (mng_uint8)(iR >> 8); + *(pDstline+1) = (mng_uint8)(iR && 0xFF); + *(pDstline+2) = (mng_uint8)(iG >> 8); + *(pDstline+3) = (mng_uint8)(iG && 0xFF); + *(pDstline+4) = (mng_uint8)(iB >> 8); + *(pDstline+5) = (mng_uint8)(iB && 0xFF); + + pSrcline += 3; + pDstline += 6; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB8_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_promote_rgb8_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iR; + mng_uint8 iG; + mng_uint8 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB8_RGBA8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iR = *pSrcline; + iG = *(pSrcline+1); + iB = *(pSrcline+2); + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || ((mng_uint16)iR != pBuf->iTRNSred) || + ((mng_uint16)iG != pBuf->iTRNSgreen) || ((mng_uint16)iB != pBuf->iTRNSblue)) + *(pDstline+3) = 0xFF; + + *pDstline = iR; + *(pDstline+1) = iG; + *(pDstline+2) = iB; + + pSrcline += 3; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB8_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_rgb8_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iR; + mng_uint8 iG; + mng_uint8 iB; + mng_uint16 iRw; + mng_uint16 iGw; + mng_uint16 iBw; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB8_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iR = *pSrcline; + iG = *(pSrcline+1); + iB = *(pSrcline+2); + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || ((mng_uint16)iR != pBuf->iTRNSred) || + ((mng_uint16)iG != pBuf->iTRNSgreen) || ((mng_uint16)iB != pBuf->iTRNSblue)) + { + *(pDstline+6) = 0xFF; + *(pDstline+7) = 0xFF; + } + + iRw = ((mng_bitdepth_16)pData->fPromBitdepth) (iR); + iGw = ((mng_bitdepth_16)pData->fPromBitdepth) (iG); + iBw = ((mng_bitdepth_16)pData->fPromBitdepth) (iB); + + *pDstline = (mng_uint8)(iRw >> 8); + *(pDstline+1) = (mng_uint8)(iRw && 0xFF); + *(pDstline+2) = (mng_uint8)(iGw >> 8); + *(pDstline+3) = (mng_uint8)(iGw && 0xFF); + *(pDstline+4) = (mng_uint8)(iBw >> 8); + *(pDstline+5) = (mng_uint8)(iBw && 0xFF); + + pSrcline += 3; + pDstline += 8; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB8_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_rgb16_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint16p pSrcline = (mng_uint16p)pData->pPromSrc; + mng_uint16p pDstline = (mng_uint16p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iR; + mng_uint16 iG; + mng_uint16 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB16_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iR = *pSrcline; + iG = *(pSrcline+1); + iB = *(pSrcline+2); + /* no cheap transparency ? */ + if ((!pBuf->bHasTRNS) || (iR != pBuf->iTRNSred) || + (iG != pBuf->iTRNSgreen) || (iB != pBuf->iTRNSblue)) + *(pDstline+3) = 0xFFFF; + + *pDstline = iR; + *(pDstline+1) = iG; + *(pDstline+2) = iB; + + pSrcline += 3; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGB16_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_promote_idx8_rgb8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGB8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + + if ((mng_uint32)iB < pBuf->iPLTEcount) + { + *pDstline = pBuf->aPLTEentries [iB].iRed; + *(pDstline+1) = pBuf->aPLTEentries [iB].iGreen; + *(pDstline+2) = pBuf->aPLTEentries [iB].iBlue; + } + + pSrcline++; + pDstline += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_idx8_rgb16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iN; + mng_uint16 iR; + mng_uint16 iG; + mng_uint16 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGB16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iN = *pSrcline; + + if ((mng_uint32)iN < pBuf->iPLTEcount) + { + iR = ((mng_bitdepth_16)pData->fPromBitdepth) (pBuf->aPLTEentries [iN].iRed); + iG = ((mng_bitdepth_16)pData->fPromBitdepth) (pBuf->aPLTEentries [iN].iGreen); + iB = ((mng_bitdepth_16)pData->fPromBitdepth) (pBuf->aPLTEentries [iN].iBlue); + *pDstline = (mng_uint8)(iR >> 8); + *(pDstline+1) = (mng_uint8)(iR && 0xFF); + *(pDstline+2) = (mng_uint8)(iG >> 8); + *(pDstline+3) = (mng_uint8)(iG && 0xFF); + *(pDstline+4) = (mng_uint8)(iB >> 8); + *(pDstline+5) = (mng_uint8)(iB && 0xFF); + } + + pSrcline++; + pDstline += 6; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_promote_idx8_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iB; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGBA8, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iB = *pSrcline; + + if ((mng_uint32)iB < pBuf->iPLTEcount) + { + *pDstline = pBuf->aPLTEentries [iB].iRed; + *(pDstline+1) = pBuf->aPLTEentries [iB].iGreen; + *(pDstline+2) = pBuf->aPLTEentries [iB].iBlue; + + if ((pBuf->bHasTRNS) && ((mng_uint32)iB < pBuf->iTRNScount)) + *(pDstline+3) = pBuf->aTRNSentries [iB]; + else + *(pDstline+3) = 0xFF; + } + + pSrcline++; + pDstline += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_promote_idx8_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = (mng_imagedatap)pData->pPromBuf; + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint8 iN; + mng_uint16 iR; + mng_uint16 iG; + mng_uint16 iB; + mng_uint16 iA; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iN = *pSrcline; + + if ((mng_uint32)iN < pBuf->iPLTEcount) + { + iR = ((mng_bitdepth_16)pData->fPromBitdepth) (pBuf->aPLTEentries [iN].iRed); + iG = ((mng_bitdepth_16)pData->fPromBitdepth) (pBuf->aPLTEentries [iN].iGreen); + iB = ((mng_bitdepth_16)pData->fPromBitdepth) (pBuf->aPLTEentries [iN].iBlue); + + if ((pBuf->bHasTRNS) && ((mng_uint32)iN < pBuf->iTRNScount)) + iA = ((mng_bitdepth_16)pData->fPromBitdepth) (pBuf->aTRNSentries [iN]); + else + iA = 0xFFFF; + + *pDstline = (mng_uint8)(iR >> 8); + *(pDstline+1) = (mng_uint8)(iR && 0xFF); + *(pDstline+2) = (mng_uint8)(iG >> 8); + *(pDstline+3) = (mng_uint8)(iG && 0xFF); + *(pDstline+4) = (mng_uint8)(iB >> 8); + *(pDstline+5) = (mng_uint8)(iB && 0xFF); + *(pDstline+6) = (mng_uint8)(iA >> 8); + *(pDstline+7) = (mng_uint8)(iA && 0xFF); + } + + pSrcline++; + pDstline += 8; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_IDX8_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_promote_rgba8_rgba16 (mng_datap pData) +{ + mng_uint8p pSrcline = (mng_uint8p)pData->pPromSrc; + mng_uint8p pDstline = (mng_uint8p)pData->pPromDst; + mng_uint32 iX; + mng_uint16 iR; + mng_uint16 iG; + mng_uint16 iB; + mng_uint16 iA; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGBA8_RGBA16, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPromWidth; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPromWidth; iX++) +#endif + { + iR = ((mng_bitdepth_16)pData->fPromBitdepth) (*pSrcline); + iG = ((mng_bitdepth_16)pData->fPromBitdepth) (*(pSrcline+1)); + iB = ((mng_bitdepth_16)pData->fPromBitdepth) (*(pSrcline+2)); + iA = ((mng_bitdepth_16)pData->fPromBitdepth) (*(pSrcline+3)); + + *pDstline = (mng_uint8)(iR >> 8); + *(pDstline+1) = (mng_uint8)(iR && 0xFF); + *(pDstline+2) = (mng_uint8)(iG >> 8); + *(pDstline+3) = (mng_uint8)(iG && 0xFF); + *(pDstline+4) = (mng_uint8)(iB >> 8); + *(pDstline+5) = (mng_uint8)(iB && 0xFF); + *(pDstline+6) = (mng_uint8)(iA >> 8); + *(pDstline+7) = (mng_uint8)(iA && 0xFF); + + pSrcline += 4; + pDstline += 8; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROMOTE_RGBA8_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif /* !defined(MNG_NO_DELTA_PNG) || !defined(MNG_SKIPCHUNK_PAST) || !defined(MNG_SKIPCHUNK_MAGN) */ + +/* ************************************************************************** */ +/* * * */ +/* * Row processing routines - convert uncompressed data from zlib to * */ +/* * managable row-data which serves as input to the color-management * */ +/* * routines * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_process_g1 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G1, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + iM = 0; /* start at pixel 0 */ + iB = 0; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { + if (pBuf->iTRNSgray) /* white transparent ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* is it white ? */ + /* transparent ! */ + mng_put_uint32 (pRGBArow, 0x00000000); + else /* opaque black */ + mng_put_uint32 (pRGBArow, 0x000000FF); + + pRGBArow += 4; /* next pixel */ + iM >>= 1; + } + } + else /* black transparent */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* is it white ? */ + /* opaque white */ + mng_put_uint32 (pRGBArow, 0xFFFFFFFF); + else /* transparent */ + mng_put_uint32 (pRGBArow, 0x00000000); + + pRGBArow += 4; /* next pixel */ + iM >>= 1; + } + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else /* no transparency */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + } + + if (iB & iM) /* is it white ? */ + /* opaque white */ + mng_put_uint32 (pRGBArow, 0xFFFFFFFF); + else /* opaque black */ + mng_put_uint32 (pRGBArow, 0x000000FF); + + pRGBArow += 4; /* next pixel */ + iM >>= 1; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_g2 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + const mng_uint32 level[4] = { 0x000000FF, 0x555555FF, + 0xAAAAAAFF, 0xFFFFFFFF}; +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G2, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + /* determine gray level */ + iQ = (mng_uint8)((iB & iM) >> iS); + + if (iQ == pBuf->iTRNSgray) /* transparent ? */ + mng_put_uint32 (pRGBArow, 0x00000000); + else + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + mng_put_uint32 (pRGBArow, level[iQ]); +#else + switch (iQ) /* determine the gray level */ + { + case 0x03 : { mng_put_uint32 (pRGBArow, 0xFFFFFFFF); break; } + case 0x02 : { mng_put_uint32 (pRGBArow, 0xAAAAAAFF); break; } + case 0x01 : { mng_put_uint32 (pRGBArow, 0x555555FF); break; } + default : { mng_put_uint32 (pRGBArow, 0x000000FF); } + } +#endif + } + + pRGBArow += 4; /* next pixel */ + iM >>= 2; + iS -= 2; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_SWITCH + mng_put_uint32 (pRGBArow, level[((iB & iM) >> iS)] ); +#else + switch ((iB & iM) >> iS) /* determine the gray level */ + { + case 0x03 : { mng_put_uint32 (pRGBArow, 0xFFFFFFFF); break; } + case 0x02 : { mng_put_uint32 (pRGBArow, 0xAAAAAAFF); break; } + case 0x01 : { mng_put_uint32 (pRGBArow, 0x555555FF); break; } + default : { mng_put_uint32 (pRGBArow, 0x000000FF); } + } +#endif + + pRGBArow += 4; /* next pixel */ + iM >>= 2; + iS -= 2; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_g4 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G4, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the gray level */ + iQ = (mng_uint8)((iB & iM) >> iS); + + if (iQ == pBuf->iTRNSgray) /* transparent ? */ + { + *pRGBArow = 0; /* put in intermediate row */ + *(pRGBArow+1) = 0; + *(pRGBArow+2) = 0; + *(pRGBArow+3) = 0; + } + else + { /* expand to 8-bit by replication */ + iQ = (mng_uint8)(iQ + (iQ << 4)); + + *pRGBArow = iQ; /* put in intermediate row */ + *(pRGBArow+1) = iQ; + *(pRGBArow+2) = iQ; + *(pRGBArow+3) = 0xFF; + } + + pRGBArow += 4; /* next pixel */ + iM >>= 4; + iS -= 4; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the gray level */ + iQ = (mng_uint8)((iB & iM) >> iS); + iQ = (mng_uint8)(iQ + (iQ << 4));/* expand to 8-bit by replication */ + + *pRGBArow = iQ; /* put in intermediate row */ + *(pRGBArow+1) = iQ; + *(pRGBArow+2) = iQ; + *(pRGBArow+3) = 0xFF; + + pRGBArow += 4; /* next pixel */ + iM >>= 4; + iS -= 4; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_process_g8 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iB; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G8, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iB = *pWorkrow; /* get next input-byte */ + + if (iB == pBuf->iTRNSgray) /* transparent ? */ + { + *pRGBArow = 0; /* put in intermediate row */ + *(pRGBArow+1) = 0; + *(pRGBArow+2) = 0; + *(pRGBArow+3) = 0; + } + else + { + *pRGBArow = iB; /* put in intermediate row */ + *(pRGBArow+1) = iB; + *(pRGBArow+2) = iB; + *(pRGBArow+3) = 0xFF; + } + + pRGBArow += 4; /* next pixel */ + pWorkrow++; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iB = *pWorkrow; /* get next input-byte */ + + *pRGBArow = iB; /* put in intermediate row */ + *(pRGBArow+1) = iB; + *(pRGBArow+2) = iB; + *(pRGBArow+3) = 0xFF; + + pRGBArow += 4; /* next pixel */ + pWorkrow++; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_process_g16 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint16 iW; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G16, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iW = mng_get_uint16 (pWorkrow); /* get input */ + + if (iW == pBuf->iTRNSgray) /* transparent ? */ + { /* put in intermediate row */ + mng_put_uint16 (pRGBArow, 0); + mng_put_uint16 (pRGBArow+2, 0); + mng_put_uint16 (pRGBArow+4, 0); + mng_put_uint16 (pRGBArow+6, 0); + } + else + { /* put in intermediate row */ + mng_put_uint16 (pRGBArow, iW); + mng_put_uint16 (pRGBArow+2, iW); + mng_put_uint16 (pRGBArow+4, iW); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + } + + pRGBArow += 8; /* next pixel */ + pWorkrow += 2; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iW = mng_get_uint16 (pWorkrow); /* get input */ + + mng_put_uint16 (pRGBArow, iW); /* and put in intermediate row */ + mng_put_uint16 (pRGBArow+2, iW); + mng_put_uint16 (pRGBArow+4, iW); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + + pRGBArow += 8; /* next pixel */ + pWorkrow += 2; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_G16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_process_rgb8 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iR, iG, iB; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGB8, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iR = *pWorkrow; /* get the RGB values */ + iG = *(pWorkrow+1); + iB = *(pWorkrow+2); + /* transparent ? */ + if ((iR == pBuf->iTRNSred) && (iG == pBuf->iTRNSgreen) && + (iB == pBuf->iTRNSblue)) + { + *pRGBArow = 0; /* this pixel is transparent ! */ + *(pRGBArow+1) = 0; + *(pRGBArow+2) = 0; + *(pRGBArow+3) = 0; + } + else + { + *pRGBArow = iR; /* copy the RGB values */ + *(pRGBArow+1) = iG; + *(pRGBArow+2) = iB; + *(pRGBArow+3) = 0xFF; /* this one isn't transparent */ + } + + pWorkrow += 3; /* next pixel */ + pRGBArow += 4; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pRGBArow = *pWorkrow; /* copy the RGB bytes */ + *(pRGBArow+1) = *(pWorkrow+1); + *(pRGBArow+2) = *(pWorkrow+2); + *(pRGBArow+3) = 0xFF; /* no alpha; so always fully opaque */ + + pWorkrow += 3; /* next pixel */ + pRGBArow += 4; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGB8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_process_rgb16 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint16 iR, iG, iB; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGB16, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iR = mng_get_uint16 (pWorkrow); /* get the RGB values */ + iG = mng_get_uint16 (pWorkrow+2); + iB = mng_get_uint16 (pWorkrow+4); + /* transparent ? */ + if ((iR == pBuf->iTRNSred) && (iG == pBuf->iTRNSgreen) && + (iB == pBuf->iTRNSblue)) + { /* transparent then */ + mng_put_uint16 (pRGBArow, 0); + mng_put_uint16 (pRGBArow+2, 0); + mng_put_uint16 (pRGBArow+4, 0); + mng_put_uint16 (pRGBArow+6, 0); + } + else + { /* put in intermediate row */ + mng_put_uint16 (pRGBArow, iR); + mng_put_uint16 (pRGBArow+2, iG); + mng_put_uint16 (pRGBArow+4, iB); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + } + + pWorkrow += 6; /* next pixel */ + pRGBArow += 8; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* copy the RGB values */ + mng_put_uint16 (pRGBArow, mng_get_uint16 (pWorkrow )); + mng_put_uint16 (pRGBArow+2, mng_get_uint16 (pWorkrow+2)); + mng_put_uint16 (pRGBArow+4, mng_get_uint16 (pWorkrow+4)); + mng_put_uint16 (pRGBArow+6, 0xFFFF); + + pWorkrow += 6; /* next pixel */ + pRGBArow += 8; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGB16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_process_idx1 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX1, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + iS = 7; + } + /* get the index */ + iQ = (mng_uint8)((iB & iM) >> iS); + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + *pRGBArow = pBuf->aPLTEentries [iQ].iRed; + *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; + *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; + /* transparency for this index ? */ + if ((mng_uint32)iQ < pBuf->iTRNScount) + *(pRGBArow+3) = pBuf->aTRNSentries [iQ]; + else + *(pRGBArow+3) = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + iM >>= 1; + iS -= 1; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0x80; + iS = 7; + } + /* get the index */ + iQ = (mng_uint8)((iB & iM) >> iS); + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + *pRGBArow = pBuf->aPLTEentries [iQ].iRed; + *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; + *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; + *(pRGBArow+3) = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + iM >>= 1; + iS -= 1; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_idx2 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX2, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + /* get the index */ + iQ = (mng_uint8)((iB & iM) >> iS); + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + *pRGBArow = pBuf->aPLTEentries [iQ].iRed; + *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; + *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; + /* transparency for this index ? */ + if ((mng_uint32)iQ < pBuf->iTRNScount) + *(pRGBArow+3) = pBuf->aTRNSentries [iQ]; + else + *(pRGBArow+3) = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + iM >>= 2; + iS -= 2; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = *pWorkrow; /* get next input-byte */ + pWorkrow++; + iM = 0xC0; + iS = 6; + } + /* get the index */ + iQ = (mng_uint8)((iB & iM) >> iS); + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + *pRGBArow = pBuf->aPLTEentries [iQ].iRed; + *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; + *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; + *(pRGBArow+3) = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + iM >>= 2; + iS -= 2; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_idx4 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iB; + mng_uint8 iM; + mng_uint32 iS; + mng_uint8 iQ; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX4, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + iM = 0; /* start at pixel 0 */ + iB = 0; + iS = 0; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = pWorkrow [0]; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the index */ + iQ = (mng_uint8)((iB & iM) >> iS); + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; + pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; + pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; + /* transparency for this index ? */ + if ((mng_uint32)iQ < pBuf->iTRNScount) + pRGBArow [3] = pBuf->aTRNSentries [iQ]; + else + pRGBArow [3] = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + iM >>= 4; + iS -= 4; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + if (!iM) /* mask underflow ? */ + { + iB = pWorkrow [0]; /* get next input-byte */ + pWorkrow++; + iM = 0xF0; + iS = 4; + } + /* get the index */ + iQ = (mng_uint8)((iB & iM) >> iS); + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; + pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; + pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; + pRGBArow [3] = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + iM >>= 4; + iS -= 4; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_process_idx8 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint8 iQ; + mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX8, MNG_LC_START); +#endif + + if (!pBuf) /* no object? then use obj 0 */ + pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + + if (pBuf->bHasTRNS) /* tRNS encountered ? */ + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iQ = *pWorkrow; /* get input byte */ + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; + pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; + pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; + /* transparency for this index ? */ + if ((mng_uint32)iQ < pBuf->iTRNScount) + pRGBArow [3] = pBuf->aTRNSentries [iQ]; + else + pRGBArow [3] = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + pWorkrow++; + } + + pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ + } + else + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iQ = *pWorkrow; /* get input byte */ + /* index valid ? */ + if ((mng_uint32)iQ < pBuf->iPLTEcount) + { /* put in intermediate row */ + pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; + pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; + pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; + pRGBArow [3] = 0xFF; + } + else + MNG_ERROR (pData, MNG_PLTEINDEXERROR); + + pRGBArow += 4; /* next pixel */ + pWorkrow++; + } + + pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_IDX8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_ga8 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_GA8, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + *pRGBArow = *pWorkrow; /* copy the gray value */ + *(pRGBArow+1) = *pWorkrow; + *(pRGBArow+2) = *pWorkrow; + *(pRGBArow+3) = *(pWorkrow+1); /* copy the alpha value */ + + pWorkrow += 2; /* next pixel */ + pRGBArow += 4; + } + + pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_GA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_process_ga16 (mng_datap pData) +{ + mng_uint8p pWorkrow; + mng_uint8p pRGBArow; + mng_int32 iX; + mng_uint16 iW; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_GA16, MNG_LC_START); +#endif + /* temporary work pointers */ + pWorkrow = pData->pWorkrow + pData->iPixelofs; + pRGBArow = pData->pRGBArow; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iW = mng_get_uint16 (pWorkrow); /* copy the gray value */ + mng_put_uint16 (pRGBArow, iW); + mng_put_uint16 (pRGBArow+2, iW); + mng_put_uint16 (pRGBArow+4, iW); + /* copy the alpha value */ + mng_put_uint16 (pRGBArow+6, mng_get_uint16 (pWorkrow+2)); + + pWorkrow += 4; /* next pixel */ + pRGBArow += 8; + } + + pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_GA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_process_rgba8 (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGBA8, MNG_LC_START); +#endif + /* this is the easiest transform */ + MNG_COPY (pData->pRGBArow, pData->pWorkrow + pData->iPixelofs, pData->iRowsize); + + pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_process_rgba16 (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGBA16, MNG_LC_START); +#endif + /* this is the easiest transform */ + MNG_COPY (pData->pRGBArow, pData->pWorkrow + pData->iPixelofs, pData->iRowsize); + + pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ +/* * * */ +/* * Row processing initialization routines - set up the variables needed * */ +/* * to process uncompressed row-data * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_OPTIMIZE_FOOTPRINT_INIT +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_init_g1_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G1_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g1; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g1; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g1; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g1; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 7; + pData->iSamplediv = 3; + pData->iRowsize = (pData->iRowsamples + 7) >> 3; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G1_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_g1_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G1_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g1; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g1; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g1; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g1; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 7; + pData->iSamplediv = 3; + pData->iRowsize = ((pData->iRowsamples + 7) >> 3); + pData->iRowmax = ((pData->iDatawidth + 7) >> 3) + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G1_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_g2_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G2_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g2; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g2; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g2; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g2; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 3; + pData->iSamplediv = 2; + pData->iRowsize = (pData->iRowsamples + 3) >> 2; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G2_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_g2_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G2_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g2; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g2; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g2; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g2; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 3; + pData->iSamplediv = 2; + pData->iRowsize = ((pData->iRowsamples + 3) >> 2); + pData->iRowmax = ((pData->iDatawidth + 3) >> 2) + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G2_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_g4_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G4_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g4; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g4; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g4; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g4; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 1; + pData->iSamplediv = 1; + pData->iRowsize = (pData->iRowsamples + 1) >> 1; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G4_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_g4_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G4_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g4; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g4; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g4; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g4; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 1; + pData->iSamplediv = 1; + pData->iRowsize = ((pData->iRowsamples + 1) >> 1); + pData->iRowmax = ((pData->iDatawidth + 1) >> 1) + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G4_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_init_g8_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G8_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g8; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G8_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_g8_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G8_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g8; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples; + pData->iRowmax = pData->iDatawidth + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G8_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_g16_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G16_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g16; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 2; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 1; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 2; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G16_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_g16_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G16_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_g16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_g16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_g16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g16; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 2; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 1; + pData->iRowmax = (pData->iDatawidth << 1) + pData->iPixelofs; + pData->iFilterbpp = 2; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_G16_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_init_rgb8_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB8_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgb8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgb8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgb8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgb8; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 3; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples * 3; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 3; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB8_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_rgb8_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB8_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgb8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgb8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgb8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgb8; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 3; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples * 3; + pData->iRowmax = (pData->iDatawidth * 3) + pData->iPixelofs; + pData->iFilterbpp = 3; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB8_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_rgb16_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB16_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgb16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgb16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgb16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgb16; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 6; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples * 6; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 6; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB16_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_rgb16_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB16_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgb16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgb16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgb16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgb16; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 6; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples * 6; + pData->iRowmax = (pData->iDatawidth * 6) + pData->iPixelofs; + pData->iFilterbpp = 6; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGB16_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_init_idx1_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX1_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx1; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx1; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx1; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx1; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 7; + pData->iSamplediv = 3; + pData->iRowsize = (pData->iRowsamples + 7) >> 3; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX1_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_idx1_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX1_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx1; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx1; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx1; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx1; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 7; + pData->iSamplediv = 3; + pData->iRowsize = (pData->iRowsamples + 7) >> 3; + pData->iRowmax = ((pData->iDatawidth + 7) >> 3) + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX1_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_idx2_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX2_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx2; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx2; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx2; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx2; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 3; + pData->iSamplediv = 2; + pData->iRowsize = (pData->iRowsamples + 3) >> 2; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX2_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_idx2_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX2_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx2; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx2; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx2; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx2; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 3; + pData->iSamplediv = 2; + pData->iRowsize = (pData->iRowsamples + 3) >> 2; + pData->iRowmax = ((pData->iDatawidth + 3) >> 2) + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX2_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_idx4_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX4_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx4; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx4; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx4; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx4; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 1; + pData->iSamplediv = 1; + pData->iRowsize = (pData->iRowsamples + 1) >> 1; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX4_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_idx4_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX4_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx4; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx4; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx4; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx4; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 1; + pData->iSamplediv = 1; + pData->iRowsize = (pData->iRowsamples + 1) >> 1; + pData->iRowmax = ((pData->iDatawidth + 1) >> 1) + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX4_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_init_idx8_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX8_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx8; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX8_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_idx8_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX8_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_idx8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_idx8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_idx8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_idx8; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 1; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples; + pData->iRowmax = pData->iDatawidth + pData->iPixelofs; + pData->iFilterbpp = 1; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_IDX8_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_ga8_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA8_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_ga8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_ga8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_ga8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_ga8; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 2; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 1; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 2; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA8_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_ga8_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA8_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_ga8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_ga8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_ga8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_ga8; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 2; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 1; + pData->iRowmax = (pData->iDatawidth << 1) + pData->iPixelofs; + pData->iFilterbpp = 2; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA8_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_ga16_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA16_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_ga16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_ga16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_ga16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_ga16; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 4; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 2; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 4; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA16_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_ga16_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA16_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_ga16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_ga16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_ga16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_ga16; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 4; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 2; + pData->iRowmax = (pData->iDatawidth << 2) + pData->iPixelofs; + pData->iFilterbpp = 4; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_GA16_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_init_rgba8_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA8_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgba8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgba8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgba8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgba8; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 4; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 2; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 4; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA8_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +/* ************************************************************************** */ + +mng_retcode mng_init_rgba8_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA8_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgba8; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgba8; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgba8; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgba8; +#endif + + pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 4; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 2; + pData->iRowmax = (pData->iDatawidth << 2) + pData->iPixelofs; + pData->iFilterbpp = 4; + pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA8_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_rgba16_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA16_NI, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgba16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgba16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgba16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgba16; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 8; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 3; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 8; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA16_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_rgba16_i (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA16_I, MNG_LC_START); +#endif + + if (pData->fDisplayrow) + pData->fProcessrow = (mng_fptr)mng_process_rgba16; + + if (pData->pStoreobj) /* store in object too ? */ + { /* immediate delta ? */ +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + pData->fStorerow = (mng_fptr)mng_delta_rgba16; + else +#endif + pData->fStorerow = (mng_fptr)mng_store_rgba16; + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_rgba16; +#endif + + pData->iPass = 0; /* from 0..6; (1..7 in specification) */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; + pData->iSamplemul = 8; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 3; + pData->iRowmax = (pData->iDatawidth << 3) + pData->iPixelofs; + pData->iFilterbpp = 8; + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_RGBA16_I, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ +/* * * */ +/* * Row processing initialization routines (JPEG) - set up the variables * */ +/* * needed to process uncompressed row-data * */ +/* * * */ +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG + +/* ************************************************************************** */ + +#ifndef MNG_NO_1_2_4BIT_SUPPORT +mng_retcode mng_init_jpeg_a1_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A1_NI, MNG_LC_START); +#endif + + if (pData->pStoreobj) /* store in object too ? */ + { + if (pData->iJHDRimgbitdepth == 8) + { + switch (pData->iJHDRcolortype) + { + case 12 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a1; break; } + case 14 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a1; break; } + } + } + + /* TODO: bitdepth 12 & 20 */ + + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g1; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 7; + pData->iSamplediv = 3; + pData->iRowsize = (pData->iRowsamples + 7) >> 3; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A1_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_jpeg_a2_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A2_NI, MNG_LC_START); +#endif + + if (pData->pStoreobj) /* store in object too ? */ + { + if (pData->iJHDRimgbitdepth == 8) + { + switch (pData->iJHDRcolortype) + { + case 12 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a2; break; } + case 14 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a2; break; } + } + } + + /* TODO: bitdepth 12 & 20 */ + + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g2; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 3; + pData->iSamplediv = 2; + pData->iRowsize = (pData->iRowsamples + 3) >> 2; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A2_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +mng_retcode mng_init_jpeg_a4_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A4_NI, MNG_LC_START); +#endif + + if (pData->pStoreobj) /* store in object too ? */ + { + if (pData->iJHDRimgbitdepth == 8) + { + switch (pData->iJHDRcolortype) + { + case 12 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a4; break; } + case 14 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a4; break; } + } + } + + /* TODO: bitdepth 12 & 20 */ + + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g4; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 1; + pData->iSamplediv = 1; + pData->iRowsize = (pData->iRowsamples + 1) >> 1; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A4_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_init_jpeg_a8_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A8_NI, MNG_LC_START); +#endif + + if (pData->pStoreobj) /* store in object too ? */ + { + if (pData->iJHDRimgbitdepth == 8) + { + switch (pData->iJHDRcolortype) + { + case 12 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a8; break; } + case 14 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a8; break; } + } + } + + /* TODO: bitdepth 12 & 20 */ + + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g8; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 1; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 1; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A8_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_init_jpeg_a16_ni (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A16_NI, MNG_LC_START); +#endif + + if (pData->pStoreobj) /* store in object too ? */ + { + if (pData->iJHDRimgbitdepth == 8) + { + switch (pData->iJHDRcolortype) + { + case 12 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a16; break; } + case 14 : { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a16; break; } + } + } + + /* TODO: bitdepth 12 & 20 */ + + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + pData->fDifferrow = (mng_fptr)mng_differ_g16; +#endif + + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + pData->iSamplemul = 2; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = pData->iRowsamples << 1; + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + pData->iFilterbpp = 2; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_JPEG_A16_NI, MNG_LC_END); +#endif + + return mng_init_rowproc (pData); +} +#endif + +/* ************************************************************************** */ + +#endif /* MNG_INCLUDE_JNG */ +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + + +/* ************************************************************************** */ +/* * * */ +/* * Generic row processing initialization & cleanup routines * */ +/* * - initialize the buffers used by the row processing routines * */ +/* * - cleanup the buffers used by the row processing routines * */ +/* * * */ +/* ************************************************************************** */ + +mng_retcode mng_init_rowproc (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_ROWPROC, MNG_LC_START); +#endif + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + if (pData->ePng_imgtype != png_none) + { + if (pData->fDisplayrow) + switch (pData->ePng_imgtype) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_g1: + pData->fProcessrow = (mng_fptr)mng_process_g1; + break; + case png_g2: + pData->fProcessrow = (mng_fptr)mng_process_g2; + break; + case png_g4: + pData->fProcessrow = (mng_fptr)mng_process_g4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_g8: + pData->fProcessrow = (mng_fptr)mng_process_g8; + break; +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_idx1: + pData->fProcessrow = (mng_fptr)mng_process_idx1; + break; + case png_idx2: + pData->fProcessrow = (mng_fptr)mng_process_idx2; + break; + case png_idx4: + pData->fProcessrow = (mng_fptr)mng_process_idx4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_idx8: + pData->fProcessrow = (mng_fptr)mng_process_idx8; + break; + case png_ga8: + pData->fProcessrow = (mng_fptr)mng_process_ga8; + break; + case png_rgb8: + pData->fProcessrow = (mng_fptr)mng_process_rgb8; + break; + case png_rgba8: + pData->fProcessrow = (mng_fptr)mng_process_rgba8; + break; +#ifndef MNG_NO_16BIT_SUPPORT + case png_g16: + pData->fProcessrow = (mng_fptr)mng_process_g16; + break; + case png_ga16: + pData->fProcessrow = (mng_fptr)mng_process_ga16; + break; + case png_rgb16: + pData->fProcessrow = (mng_fptr)mng_process_rgb16; + break; + case png_rgba16: + pData->fProcessrow = (mng_fptr)mng_process_rgba16; + break; +#endif + default: + break; + } + + if (pData->pStoreobj) /* store in object too ? */ + { +#ifndef MNG_NO_DELTA_PNG + if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) + switch (pData->ePng_imgtype) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_g1: + pData->fStorerow = (mng_fptr)mng_delta_g1; + break; + case png_g2: + pData->fStorerow = (mng_fptr)mng_delta_g2; + break; + case png_g4: + pData->fStorerow = (mng_fptr)mng_delta_g4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_g8: + pData->fStorerow = (mng_fptr)mng_delta_g8; + break; +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_idx1: + pData->fStorerow = (mng_fptr)mng_delta_idx1; + break; + case png_idx2: + pData->fStorerow = (mng_fptr)mng_delta_idx2; + break; + case png_idx4: + pData->fStorerow = (mng_fptr)mng_delta_idx4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_idx8: + pData->fStorerow = (mng_fptr)mng_delta_idx8; + break; + case png_ga8: + pData->fStorerow = (mng_fptr)mng_delta_ga8; + break; + case png_rgb8: + pData->fStorerow = (mng_fptr)mng_delta_rgb8; + break; + case png_rgba8: + pData->fStorerow = (mng_fptr)mng_delta_rgba8; + break; +#ifndef MNG_NO_16BIT_SUPPORT + case png_g16: + pData->fStorerow = (mng_fptr)mng_delta_g16; + break; + case png_ga16: + pData->fStorerow = (mng_fptr)mng_delta_ga16; + break; + case png_rgb16: + pData->fStorerow = (mng_fptr)mng_delta_rgb16; + break; + case png_rgba16: + pData->fStorerow = (mng_fptr)mng_delta_rgba16; + break; +#endif + default: + break; + } + else +#endif /* MNG_NO_DELTA_PNG */ + switch (pData->ePng_imgtype) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_g1: + pData->fStorerow = (mng_fptr)mng_store_g1; + break; + case png_g2: + pData->fStorerow = (mng_fptr)mng_store_g2; + break; + case png_g4: + pData->fStorerow = (mng_fptr)mng_store_g4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_g8: + pData->fStorerow = (mng_fptr)mng_store_g8; + break; +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_idx1: + pData->fStorerow = (mng_fptr)mng_store_idx1; + break; + case png_idx2: + pData->fStorerow = (mng_fptr)mng_store_idx2; + break; + case png_idx4: + pData->fStorerow = (mng_fptr)mng_store_idx4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_idx8: + pData->fStorerow = (mng_fptr)mng_store_idx8; + break; + case png_ga8: + pData->fStorerow = (mng_fptr)mng_store_ga8; + break; + case png_rgb8: + pData->fStorerow = (mng_fptr)mng_store_rgb8; + break; + case png_rgba8: + pData->fStorerow = (mng_fptr)mng_store_rgba8; + break; +#ifndef MNG_NO_16BIT_SUPPORT + case png_g16: + pData->fStorerow = (mng_fptr)mng_store_g16; + break; + case png_ga16: + pData->fStorerow = (mng_fptr)mng_store_ga16; + break; + case png_rgb16: + pData->fStorerow = (mng_fptr)mng_store_rgb16; + break; + case png_rgba16: + pData->fStorerow = (mng_fptr)mng_store_rgba16; + break; +#endif + +#ifdef MNG_INCLUDE_JNG +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_jpeg_a1: +/* if (pData->iJHDRimgbitdepth == 8) */ + { + switch (pData->iJHDRcolortype) + { + case 12 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a1; break; } + case 14 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a1; break; } + } + } + /* TODO: bitdepth 12 & 20 */ + break; + case png_jpeg_a2: +/* if (pData->iJHDRimgbitdepth == 8) */ + { + switch (pData->iJHDRcolortype) + { + case 12 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a2; break; } + case 14 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a2; break; } + } + } + break; + /* TODO: bitdepth 12 & 20 */ + case png_jpeg_a4: +/* if (pData->iJHDRimgbitdepth == 8) */ + { + switch (pData->iJHDRcolortype) + { + case 12 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a4; break; } + case 14 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a4; break; } + } + } + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + /* TODO: bitdepth 12 & 20 */ + case png_jpeg_a8: +/* if (pData->iJHDRimgbitdepth == 8) */ + { + switch (pData->iJHDRcolortype) + { + case 12 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a8; break; } + case 14 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a8; break; } + } + } + break; + /* TODO: bitdepth 12 & 20 */ +#ifndef MNG_NO_16BIT_SUPPORT + case png_jpeg_a16: +/* if (pData->iJHDRimgbitdepth == 8) */ + { + switch (pData->iJHDRcolortype) + { + case 12 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_g8_a16; break; } + case 14 : + { pData->fStorerow = (mng_fptr)mng_store_jpeg_rgb8_a16; break; } + } + } + break; + /* TODO: bitdepth 12 & 20 */ +#endif +#endif /* MNG_INCLUDE_JNG */ + default: + break; + } + } + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + switch (pData->ePng_imgtype) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_g1: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a1: +#endif + pData->fDifferrow = (mng_fptr)mng_differ_g1; + break; + case png_g2: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a2: +#endif + pData->fDifferrow = (mng_fptr)mng_differ_g2; + break; + case png_g4: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a4: +#endif + pData->fDifferrow = (mng_fptr)mng_differ_g4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_g8: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a8: +#endif + pData->fDifferrow = (mng_fptr)mng_differ_g8; + break; + case png_rgb8: + pData->fDifferrow = (mng_fptr)mng_differ_rgb8; + break; +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_idx1: + pData->fDifferrow = (mng_fptr)mng_differ_idx1; + break; + case png_idx2: + pData->fDifferrow = (mng_fptr)mng_differ_idx2; + break; + case png_idx4: + pData->fDifferrow = (mng_fptr)mng_differ_idx4; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_idx8: + pData->fDifferrow = (mng_fptr)mng_differ_idx8; + break; + case png_ga8: + pData->fDifferrow = (mng_fptr)mng_differ_ga8; + break; + case png_rgb8: + pData->fDifferrow = (mng_fptr)mng_differ_rgb8; + break; + case png_rgba8: + pData->fDifferrow = (mng_fptr)mng_differ_rgba8; + break; +#ifndef MNG_NO_16BIT_SUPPORT + case png_g16: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a16: +#endif + pData->fDifferrow = (mng_fptr)mng_differ_g16; + break; + case png_ga16: + pData->fDifferrow = (mng_fptr)mng_differ_ga16; + break; + case png_rgb16: + pData->fDifferrow = (mng_fptr)mng_differ_rgb16; + break; + case png_rgba16: + pData->fDifferrow = (mng_fptr)mng_differ_rgba16; + break; +#endif + default: + break; + } +#endif + + switch (pData->ePng_imgtype) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case png_g1: + case png_idx1: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a1: +#endif + pData->iSamplemul = 1; + pData->iSampleofs = 7; + pData->iSamplediv = 3; + pData->iFilterbpp = 1; + break; + case png_g2: + case png_idx2: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a2: +#endif + pData->iSamplemul = 1; + pData->iSampleofs = 3; + pData->iSamplediv = 2; + pData->iFilterbpp = 1; + break; + case png_g4: + case png_idx4: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a4: +#endif + pData->iSamplemul = 1; + pData->iSampleofs = 1; + pData->iSamplediv = 1; + pData->iFilterbpp = 1; + break; +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case png_g8: + case png_idx8: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a8: +#endif + pData->iSamplemul = 1; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iFilterbpp = 1; + break; + case png_ga8: +#ifndef MNG_NO_16BIT_SUPPORT + case png_g16: +#ifdef MNG_INCLUDE_JNG + case png_jpeg_a16: +#endif +#endif + pData->iSamplemul = 2; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iFilterbpp = 2; + break; + case png_rgb8: + pData->iSamplemul = 3; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iFilterbpp = 3; + break; +#ifndef MNG_NO_16BIT_SUPPORT + case png_ga16: +#endif + case png_rgba8: + pData->iSamplemul = 4; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iFilterbpp = 4; + break; +#ifndef MNG_NO_16BIT_SUPPORT + case png_rgb16: + pData->iSamplemul = 6; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iFilterbpp = 6; + break; + case png_rgba16: + pData->iSamplemul = 8; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iFilterbpp = 8; + break; +#endif + default: + break; + } + + if (pData->iInterlace) /* noninterlaced */ + { + pData->iPass = 0; /* from 0..6; (1..7 in specification) */ + pData->iRow = interlace_row [0]; + pData->iRowinc = interlace_rowskip [0]; + pData->iCol = interlace_col [0]; + pData->iColinc = interlace_colskip [0]; + pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> + interlace_divider [0]; + pData->iRowmax = ((pData->iDatawidth * pData->iSamplemul + + pData->iSampleofs) >> pData->iSamplediv) + pData->iPixelofs; + } + else /* interlaced */ + { + pData->iPass = -1; + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iDatawidth; + } + if (pData->iSamplediv > 0) + pData->iRowsize = (pData->iRowsamples + pData->iSampleofs) >> + pData->iSamplediv; + else + pData->iRowsize = (pData->iRowsamples * pData->iSamplemul); + + if (!pData->iInterlace) /* noninterlaced */ + pData->iRowmax = pData->iRowsize + pData->iPixelofs; + +#ifdef MNG_NO_16BIT_SUPPORT + pData->bIsRGBA16 = MNG_FALSE; +#else + switch (pData->ePng_imgtype) + { + case png_g16: + case png_ga16: + case png_rgb16: + case png_rgba16: + pData->bIsRGBA16 = MNG_TRUE; + break; + default: + pData->bIsRGBA16 = MNG_FALSE; + break; + } +#endif + + } +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + + if (pData->pStoreobj) /* storage object selected ? */ + { + pData->pStorebuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + /* and so it becomes viewable ! */ + ((mng_imagep)pData->pStoreobj)->bViewable = MNG_TRUE; + ((mng_imagedatap)pData->pStorebuf)->bViewable = MNG_TRUE; + } + + /* allocate the buffers; the individual init routines have already + calculated the required maximum size; except in the case of a JNG + without alpha!!! */ + if (pData->iRowmax) + { +#if defined(MNG_NO_16BIT_SUPPORT) || defined (MNG_NO_1_2_4BIT_SUPPORT) + mng_uint8 iRowadd = 0; +#ifdef MNG_NO_1_2_4BIT_SUPPORT + if (pData->iPNGdepth < 8) + iRowadd=(pData->iPNGdepth*pData->iRowmax+7)/8; +#endif +#ifdef MNG_NO_16BIT_SUPPORT + if (pData->iPNGdepth > 8) + iRowadd=pData->iRowmax; +#endif + MNG_ALLOC (pData, pData->pWorkrow, pData->iRowmax+iRowadd); + MNG_ALLOC (pData, pData->pPrevrow, pData->iRowmax+iRowadd); +#else + MNG_ALLOC (pData, pData->pWorkrow, pData->iRowmax); + MNG_ALLOC (pData, pData->pPrevrow, pData->iRowmax); +#endif + } + + /* allocate an RGBA16 row for intermediate processing */ + MNG_ALLOC (pData, pData->pRGBArow, (pData->iDatawidth << 3)); + +#ifndef MNG_NO_CMS + if (pData->fDisplayrow) /* display "on-the-fly" ? */ + { +#if defined(MNG_FULL_CMS) /* determine color-management initialization */ + mng_retcode iRetcode = mng_init_full_cms (pData, MNG_TRUE, MNG_TRUE, MNG_FALSE); +#elif defined(MNG_GAMMA_ONLY) + mng_retcode iRetcode = mng_init_gamma_only (pData, MNG_TRUE, MNG_TRUE, MNG_FALSE); +#elif defined(MNG_APP_CMS) + mng_retcode iRetcode = mng_init_app_cms (pData, MNG_TRUE, MNG_TRUE, MNG_FALSE); +#endif + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif /* !MNG_NO_CMS */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INIT_ROWPROC, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_next_row (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_ROW, MNG_LC_START); +#endif + + pData->iRow += pData->iRowinc; /* increase the row counter */ + + if (pData->iPass >= 0) /* interlaced ? */ + { + while ((pData->iPass < 7) && /* went 'outside' the image ? */ + ((pData->iRow >= (mng_int32)pData->iDataheight) || + (pData->iCol >= (mng_int32)pData->iDatawidth ) )) + { + pData->iPass++; /* next pass ! */ + + if (pData->iPass < 7) /* there's only 7 passes ! */ + { + pData->iRow = interlace_row [pData->iPass]; + pData->iRowinc = interlace_rowskip [pData->iPass]; + pData->iCol = interlace_col [pData->iPass]; + pData->iColinc = interlace_colskip [pData->iPass]; + pData->iRowsamples = (pData->iDatawidth - pData->iCol + interlace_roundoff [pData->iPass]) + >> interlace_divider [pData->iPass]; + + if (pData->iSamplemul > 1) /* recalculate row dimension */ + pData->iRowsize = pData->iRowsamples * pData->iSamplemul; + else + if (pData->iSamplediv > 0) + pData->iRowsize = (pData->iRowsamples + pData->iSampleofs) >> pData->iSamplediv; + else + pData->iRowsize = pData->iRowsamples; + + } + + if ((pData->iPass < 7) && /* reset previous row to zeroes ? */ + (pData->iRow < (mng_int32)pData->iDataheight) && + (pData->iCol < (mng_int32)pData->iDatawidth ) ) + { /* making sure the filters will work properly! */ + mng_int32 iX; + mng_uint8p pTemp = pData->pPrevrow; + +#ifdef MNG_NO_16BIT_SUPPORT +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iPNGmult*pData->iRowsize; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iPNGmult*pData->iRowsize; iX++) +#endif +#else +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsize; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsize; iX++) +#endif +#endif + { + *pTemp = 0; + pTemp++; + } + } + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_ROW, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_cleanup_rowproc (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_CLEANUP_ROWPROC, MNG_LC_START); +#endif + +#ifdef MNG_INCLUDE_LCMS /* cleanup cms profile/transform */ + { + mng_retcode iRetcode = mng_clear_cms (pData); + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif /* MNG_INCLUDE_LCMS */ + + if (pData->pRGBArow) /* cleanup buffer for intermediate row */ + MNG_FREEX (pData, pData->pRGBArow, (pData->iDatawidth << 3)); + if (pData->pPrevrow) /* cleanup buffer for previous row */ + MNG_FREEX (pData, pData->pPrevrow, pData->iRowmax); + if (pData->pWorkrow) /* cleanup buffer for working row */ + MNG_FREEX (pData, pData->pWorkrow, pData->iRowmax); + + pData->pWorkrow = MNG_NULL; /* propogate uninitialized buffers */ + pData->pPrevrow = MNG_NULL; + pData->pRGBArow = MNG_NULL; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_CLEANUP_ROWPROC, MNG_LC_END); +#endif + + return MNG_NOERROR; /* woohiii */ +} + +/* ************************************************************************** */ +/* * * */ +/* * Generic row processing routines for JNG * */ +/* * * */ +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG + +/* ************************************************************************** */ + +mng_retcode mng_display_jpeg_rows (mng_datap pData) +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_JPEG_ROWS, MNG_LC_START); +#endif + /* any completed rows ? */ + if ((pData->iJPEGrow > pData->iJPEGdisprow) && + (pData->iJPEGalpharow > pData->iJPEGdisprow) ) + { + mng_uint32 iX, iMax; + mng_uint32 iSaverow = pData->iRow; /* save alpha decompression row-count */ + /* determine the highest complete(!) row */ + if (pData->iJPEGrow > pData->iJPEGalpharow) + iMax = pData->iJPEGalpharow; + else + iMax = pData->iJPEGrow; + /* display the rows */ + for (iX = pData->iJPEGdisprow; iX < iMax; iX++) + { + pData->iRow = iX; /* make sure we all know which row to handle */ + /* makeup an intermediate row from the buffer */ + iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData); + /* color-correct it if necessary */ + if ((!iRetcode) && (pData->fCorrectrow)) + iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); + + if (!iRetcode) /* and display it */ + { + iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); + + if (!iRetcode) /* check progressive display refresh */ + iRetcode = mng_display_progressive_check (pData); + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + + pData->iJPEGdisprow = iMax; /* keep track of the last displayed row */ + pData->iRow = iSaverow; /* restore alpha decompression row-count */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_JPEG_ROWS, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_next_jpeg_alpharow (mng_datap pData) +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ALPHAROW, MNG_LC_START); +#endif + + pData->iJPEGalpharow++; /* count the row */ + + if (pData->fDisplayrow) /* display "on-the-fly" ? */ + { /* try to display what you can */ + iRetcode = mng_display_jpeg_rows (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ALPHAROW, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_next_jpeg_row (mng_datap pData) +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ROW, MNG_LC_START); +#endif + + pData->iJPEGrow++; /* increase the row-counter */ + + if (pData->fDisplayrow) /* display "on-the-fly" ? */ + { /* has alpha channel ? */ + if ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) + { /* try to display what you can */ + iRetcode = mng_display_jpeg_rows (pData); + } + else + { /* make sure we all know which row to handle */ + pData->iRow = pData->iJPEGrow - 1; + /* makeup an intermediate row from the buffer */ + iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData); + /* color-correct it if necessary */ + if ((!iRetcode) && (pData->fCorrectrow)) + iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); + + if (!iRetcode) /* and display it */ + { + iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); + + if (!iRetcode) /* check progressive display refresh */ + iRetcode = mng_display_progressive_check (pData); + } + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + + /* surpassed last filled row ? */ + if (pData->iJPEGrow > pData->iJPEGrgbrow) + pData->iJPEGrgbrow = pData->iJPEGrow; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ROW, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MAGN +#ifndef MNG_OPTIMIZE_FOOTPRINT_MAGN +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_g8_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X1, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + } + + pTempsrc1++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_g8_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 1; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { /* is it same as first ? */ + if (*pTempsrc1 == *pTempsrc2) + { + for (iS = 1; iS < iM; iS++) /* then just repeat the first */ + { + *pTempdst = *pTempsrc1; + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) /* calculate the distances */ + { + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + pTempdst++; + } + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + } + } + } + + pTempsrc1++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_g8_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X3, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 1; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { /* is it same as first ? */ + if (*pTempsrc1 == *pTempsrc2) + { + for (iS = 1; iS < iM; iS++) /* then just repeat the first */ + { + *pTempdst = *pTempsrc1; + pTempdst++; + } + } + else + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + pTempdst++; + } + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + } + } + } + + pTempsrc1++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb8_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X1, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + } + + pTempsrc1 += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb8_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 3; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + for (iS = 1; iS < iM; iS++) + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - + (mng_int32)(*(pTempsrc1+1)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - + (mng_int32)(*(pTempsrc1+2)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + } + } + } + + pTempsrc1 += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb8_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X3, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 3; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + *(pTempdst+1) = *(pTempsrc1+1); + *(pTempdst+2) = *(pTempsrc1+2); + + pTempdst += 3; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + *(pTempdst+1) = *(pTempsrc2+1); + *(pTempdst+2) = *(pTempsrc2+2); + + pTempdst += 3; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + } + } + } + + pTempsrc1 += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_ga8_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X1, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + for (iS = 1; iS < iM; iS++) + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - + (mng_int32)(*(pTempsrc1+1)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X3, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + *(pTempdst+1) = *(pTempsrc1+1); + + pTempdst += 2; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + *(pTempdst+1) = *(pTempsrc2+1); + + pTempdst += 2; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_x4 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X4, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + + *pTempdst = *(pTempsrc1+1); /* replicate alpha from left */ + + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + + *pTempdst = *(pTempsrc2+1); /* replicate alpha from right */ + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_x5 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X5, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + *pTempdst = *pTempsrc1; /* replicate gray from left */ + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1);/* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - + (mng_int32)(*(pTempsrc1+1)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); + + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + *pTempdst = *pTempsrc2; /* replicate gray from right */ + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1);/* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - + (mng_int32)(*(pTempsrc1+1)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X5, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ +#endif /* MNG_OPTIMIZE_FOOTPRINT_MAGN */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X1, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + for (iS = 1; iS < iM; iS++) + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - + (mng_int32)(*(pTempsrc1+1)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - + (mng_int32)(*(pTempsrc1+2)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); + + pTempdst++; + + if (*(pTempsrc1+3) == *(pTempsrc2+3)) + *pTempdst = *(pTempsrc1+3); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+3)) - + (mng_int32)(*(pTempsrc1+3)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+3)) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X3, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + *(pTempdst+1) = *(pTempsrc1+1); + *(pTempdst+2) = *(pTempsrc1+2); + *(pTempdst+3) = *(pTempsrc1+3); + + pTempdst += 4; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + *(pTempdst+1) = *(pTempsrc2+1); + *(pTempdst+2) = *(pTempsrc2+2); + *(pTempdst+3) = *(pTempsrc2+3); + + pTempdst += 4; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_x4 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X4, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - + (mng_int32)(*(pTempsrc1+1)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - + (mng_int32)(*(pTempsrc1+2)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); + + pTempdst++; + /* replicate alpha from left */ + *pTempdst = *(pTempsrc1+3); + + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2)) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - + (mng_int32)(*(pTempsrc1+1)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - + (mng_int32)(*(pTempsrc1+2)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); + + pTempdst++; + /* replicate alpha from right */ + *pTempdst = *(pTempsrc2+3); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_x5 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X5, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline; /* initialize pixel-loop */ + pTempdst = pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + *pTempdst = *pTempsrc1; /* replicate color from left */ + *(pTempdst+1) = *(pTempsrc1+1); + *(pTempdst+2) = *(pTempsrc1+2); + + if (*(pTempsrc1+3) == *(pTempsrc2+3)) + *(pTempdst+3) = *(pTempsrc1+3); + else + *(pTempdst+3) = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+3)) - + (mng_int32)(*(pTempsrc1+3)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+3)) ); + + pTempdst += 4; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + *pTempdst = *pTempsrc2; /* replicate color from right */ + *(pTempdst+1) = *(pTempsrc2+1); + *(pTempdst+2) = *(pTempsrc2+2); + + if (*(pTempsrc1+3) == *(pTempsrc2+3)) + *(pTempdst+3) = *(pTempsrc1+3); + else + *(pTempdst+3) = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+3)) - + (mng_int32)(*(pTempsrc1+3)) ) + iM) / + (iM * 2)) + (mng_int32)(*(pTempsrc1+3)) ); + + pTempdst += 4; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_OPTIMIZE_FOOTPRINT_MAGN +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_g8_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, iWidth); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ +mng_retcode mng_magnify_g8_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_g8_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, iWidth) + else + MNG_COPY (pDstline, pSrcline2, iWidth); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, iWidth); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb8_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, iWidth * 3); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb8_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth * 3); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb8_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, iWidth * 3) + else + MNG_COPY (pDstline, pSrcline2, iWidth * 3); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, iWidth * 3); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_ga8_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, iWidth << 1); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth << 1); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, iWidth << 1) + else + MNG_COPY (pDstline, pSrcline2, iWidth << 1); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, iWidth << 1); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_y4 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y4, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2 += 2; + + *pTempdst++ = *pTempsrc1++; /* replicate alpha from top */ + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1 += 2; + pTempsrc2++; + + *pTempdst++ = *pTempsrc2++; /* replicate alpha from bottom */ + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth << 1); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga8_y5 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y5, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* replicate gray from top */ + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc2; /* replicate gray from bottom */ + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth << 1); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y5, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ +#endif /* MNG_OPTIMIZE_FOOTPRINT_MAGN */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, iWidth << 2); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y2, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth << 2); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, iWidth << 2) + else + MNG_COPY (pDstline, pSrcline2, iWidth << 2); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, iWidth << 2); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_y4 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y4, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2 += 2; + + *pTempdst++ = *pTempsrc1++; /* replicate alpha from top */ + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1 += 2; + pTempsrc2++; + + *pTempdst++ = *pTempsrc2++; /* replicate alpha from bottom */ + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth << 2); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba8_y5 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint8p pTempsrc1; + mng_uint8p pTempsrc2; + mng_uint8p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y5, MNG_LC_START); +#endif + + pTempsrc1 = pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = pSrcline2; + pTempdst = pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst++ = *pTempsrc1++; /* replicate color from top */ + *pTempdst++ = *pTempsrc1++; + *pTempdst++ = *pTempsrc1++; + + pTempsrc2 += 3; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst++ = *pTempsrc2++; /* replicate color from bottom */ + *pTempdst++ = *pTempsrc2++; + *pTempdst++ = *pTempsrc2++; + + pTempsrc1 += 3; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - + (mng_int32)(*pTempsrc1) ) + iM) / + (iM * 2) ) + (mng_int32)(*pTempsrc1) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth << 2); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y5, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_OPTIMIZE_FOOTPRINT_MAGN +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_g16_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_X1, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + } + + pTempsrc1++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_g16_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_X2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 1; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { /* is it same as first ? */ + if (*pTempsrc1 == *pTempsrc2) + { + for (iS = 1; iS < iM; iS++) /* then just repeat the first */ + { + *pTempdst = *pTempsrc1; + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) /* calculate the distances */ + { + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) )); + pTempdst++; + } + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + } + } + } + + pTempsrc1++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_g16_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_X3, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 1; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { /* is it same as first ? */ + if (*pTempsrc1 == *pTempsrc2) + { + for (iS = 1; iS < iM; iS++) /* then just repeat the first */ + { + *pTempdst = *pTempsrc1; + pTempdst++; + } + } + else + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + pTempdst++; + } + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + } + } + } + + pTempsrc1++; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb16_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_X1, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + } + + pTempsrc1 += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb16_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_X2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 3; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + for (iS = 1; iS < iM; iS++) + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+1))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+2))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + } + } + } + + pTempsrc1 += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb16_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_X3, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 3; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + *(pTempdst+1) = *(pTempsrc1+1); + *(pTempdst+2) = *(pTempsrc1+2); + + pTempdst += 3; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + *(pTempdst+1) = *(pTempsrc2+1); + *(pTempdst+2) = *(pTempsrc2+2); + + pTempdst += 3; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + } + } + } + + pTempsrc1 += 3; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_ga16_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X1, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p) pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + for (iS = 1; iS < iM; iS++) + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+1))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X3, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + *(pTempdst+1) = *(pTempsrc1+1); + + pTempdst += 2; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + *(pTempdst+1) = *(pTempsrc2+1); + + pTempdst += 2; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_x4 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X4, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + + *pTempdst = *(pTempsrc1+1); /* replicate alpha from left */ + + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + + *pTempdst = *(pTempsrc2+1); /* replicate alpha from right */ + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_x5 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X5, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 2; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + *pTempdst = *pTempsrc1; /* replicate gray from left */ + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1);/* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+1))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) ); + + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + *pTempdst = *pTempsrc2; /* replicate gray from right */ + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1);/* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+1))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + } + } + } + + pTempsrc1 += 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_X5, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_x1 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX, iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X1, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + iM = iML; + else + if (iX == (iWidth - 1)) /* last interval ? */ + iM = iMR; + else + iM = iMX; + + for (iS = 1; iS < iM; iS++) /* fill interval */ + { + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_x2 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + for (iS = 1; iS < iM; iS++) + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+1))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+2))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) ); + + pTempdst++; + + if (*(pTempsrc1+3) == *(pTempsrc2+3)) + *pTempdst = *(pTempsrc1+3); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+3))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+3))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+3))) ) ); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_x3 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X3, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* replicate first half */ + { + *pTempdst = *pTempsrc1; + *(pTempdst+1) = *(pTempsrc1+1); + *(pTempdst+2) = *(pTempsrc1+2); + *(pTempdst+3) = *(pTempsrc1+3); + + pTempdst += 4; + } + + for (iS = iH; iS < iM; iS++) /* replicate second half */ + { + *pTempdst = *pTempsrc2; + *(pTempdst+1) = *(pTempsrc2+1); + *(pTempdst+2) = *(pTempsrc2+2); + *(pTempdst+3) = *(pTempsrc2+3); + + pTempdst += 4; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_x4 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X4, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+1))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+2))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) ); + + pTempdst++; + /* replicate alpha from left */ + *pTempdst = *(pTempsrc1+3); + + pTempdst++; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; /* just repeat the first */ + else /* calculate the distance */ + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + + if (*(pTempsrc1+1) == *(pTempsrc2+1)) + *pTempdst = *(pTempsrc1+1); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+1))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+1))) ) ); + + pTempdst++; + + if (*(pTempsrc1+2) == *(pTempsrc2+2)) + *pTempdst = *(pTempsrc1+2); + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+2))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+2))) ) ); + + pTempdst++; + /* replicate alpha from right */ + *pTempdst = *(pTempsrc2+3); + + pTempdst++; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_x5 (mng_datap pData, + mng_uint16 iMX, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint32 iWidth, + mng_uint8p pSrcline, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_int32 iS, iM, iH; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X5, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline; /* initialize pixel-loop */ + pTempdst = (mng_uint16p)pDstline; + + for (iX = 0; iX < iWidth; iX++) + { + pTempsrc2 = pTempsrc1 + 4; + + *pTempdst = *pTempsrc1; /* copy original source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + + if (iX == 0) /* first interval ? */ + { + if (iWidth == 1) /* single pixel ? */ + pTempsrc2 = MNG_NULL; + + iM = (mng_int32)iML; + } + else + if (iX == (iWidth - 2)) /* last interval ? */ + iM = (mng_int32)iMR; + else + iM = (mng_int32)iMX; + /* fill interval ? */ + if ((iX < iWidth - 1) || (iWidth == 1)) + { + if (pTempsrc2) /* do we have the second pixel ? */ + { + iH = (iM+1) / 2; /* calculate halfway point */ + + for (iS = 1; iS < iH; iS++) /* first half */ + { + *pTempdst = *pTempsrc1; /* replicate color from left */ + *(pTempdst+1) = *(pTempsrc1+1); + *(pTempdst+2) = *(pTempsrc1+2); + + if (*(pTempsrc1+3) == *(pTempsrc2+3)) + *(pTempdst+3) = *(pTempsrc1+3); + else + mng_put_uint16 ((mng_uint8p)(pTempdst+3), + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+3))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+3))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+3))) ) ); + + pTempdst += 4; + } + + for (iS = iH; iS < iM; iS++) /* second half */ + { + *pTempdst = *pTempsrc2; /* replicate color from right */ + *(pTempdst+1) = *(pTempsrc2+1); + *(pTempdst+2) = *(pTempsrc2+2); + + if (*(pTempsrc1+3) == *(pTempsrc2+3)) + *(pTempdst+3) = *(pTempsrc1+3); + else + mng_put_uint16 ((mng_uint8p)(pTempdst+3), + (mng_uint16)(((2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc2+3))) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+3))) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)(pTempsrc1+3))) ) ); + + pTempdst += 4; + } + } + else + { + for (iS = 1; iS < iM; iS++) + { + *pTempdst = *pTempsrc1; /* repeat first source pixel */ + pTempdst++; + *pTempdst = *(pTempsrc1+1); + pTempdst++; + *pTempdst = *(pTempsrc1+2); + pTempdst++; + *pTempdst = *(pTempsrc1+3); + pTempdst++; + } + } + } + + pTempsrc1 += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_X4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_g16_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, (iWidth << 1)); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_g16_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_Y2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, (iWidth << 1)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_g16_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, (iWidth << 1)) + else + MNG_COPY (pDstline, pSrcline2, (iWidth << 1)); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, (iWidth << 1)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_G16_Y3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb16_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, iWidth * 6); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb16_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_Y2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, iWidth * 6); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgb16_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, iWidth * 6) + else + MNG_COPY (pDstline, pSrcline2, iWidth * 6); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, iWidth * 6); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB16_Y3, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_GRAY_SUPPORT +mng_retcode mng_magnify_ga16_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, (iWidth << 2)); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, (iWidth << 2)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, (iWidth << 2)) + else + MNG_COPY (pDstline, pSrcline2, (iWidth << 2)); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, (iWidth << 2)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_y4 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y4, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2 += 2; + + *pTempdst++ = *pTempsrc1++; /* replicate alpha from top */ + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1 += 2; + pTempsrc2++; + + *pTempdst++ = *pTempsrc2++; /* replicate alpha from bottom */ + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, (iWidth << 2)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_ga16_y5 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y5, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc1; /* replicate gray from top */ + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst = *pTempsrc2; /* replicate gray from bottom */ + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, (iWidth << 2)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_GA16_Y5, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_GRAY_SUPPORT */ + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_y1 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y1, MNG_LC_START); +#endif + + MNG_COPY (pDstline, pSrcline1, (iWidth << 3)); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y1, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_y2 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y2, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, (iWidth << 3)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_y3 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y3, MNG_LC_START); +#endif + + if (pSrcline2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + MNG_COPY (pDstline, pSrcline1, (iWidth << 3)) + else + MNG_COPY (pDstline, pSrcline2, (iWidth << 3)); + } + else + { /* just repeat the entire line */ + MNG_COPY (pDstline, pSrcline1, (iWidth << 3)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y2, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_y4 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y4, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2 += 2; + + *pTempdst++ = *pTempsrc1++; /* replicate alpha from top */ + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { /* calculate the distances */ + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + + if (*pTempsrc1 == *pTempsrc2) + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1 += 2; + pTempsrc2++; + + *pTempdst++ = *pTempsrc2++; /* replicate alpha from bottom */ + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, (iWidth << 3)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y4, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_magnify_rgba16_y5 (mng_datap pData, + mng_int32 iS, + mng_int32 iM, + mng_uint32 iWidth, + mng_uint8p pSrcline1, + mng_uint8p pSrcline2, + mng_uint8p pDstline) +{ + mng_uint32 iX; + mng_uint16p pTempsrc1; + mng_uint16p pTempsrc2; + mng_uint16p pTempdst; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y5, MNG_LC_START); +#endif + + pTempsrc1 = (mng_uint16p)pSrcline1; /* initialize pixel-loop */ + pTempsrc2 = (mng_uint16p)pSrcline2; + pTempdst = (mng_uint16p)pDstline; + + if (pTempsrc2) /* do we have a second line ? */ + { + if (iS < (iM+1) / 2) /* top half ? */ + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst++ = *pTempsrc1++; /* replicate color from top */ + *pTempdst++ = *pTempsrc1++; + *pTempdst++ = *pTempsrc1++; + + pTempsrc2 += 3; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + else + { + for (iX = 0; iX < iWidth; iX++) + { + *pTempdst++ = *pTempsrc2++; /* replicate color from bottom */ + *pTempdst++ = *pTempsrc2++; + *pTempdst++ = *pTempsrc2++; + + pTempsrc1 += 3; + + if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ + *pTempdst = *pTempsrc1; + else + mng_put_uint16 ((mng_uint8p)pTempdst, + (mng_uint16)( ( (2 * iS * ( (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc2)) - + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) + iM) / + (iM * 2)) + (mng_int32)(mng_get_uint16 ((mng_uint8p)pTempsrc1)) ) ); + + pTempdst++; + pTempsrc1++; + pTempsrc2++; + } + } + } + else + { /* just repeat the entire line */ + MNG_COPY (pTempdst, pTempsrc1, (iWidth << 3)); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA16_Y5, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_16BIT_SUPPORT */ +#endif /* MNG_OPTIMIZE_FOOTPRINT_MAGN */ +#endif /* MNG_SKIPCHUNK_MAGN */ + +/* ************************************************************************** */ +/* * * */ +/* * PAST composition routines - compose over/under with a target object * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_PAST +mng_retcode mng_composeover_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8; + mng_uint8 iCr8, iCg8, iCb8, iCa8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEOVER_RGBA8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iFGa8 = *(pWorkrow+3); /* get alpha values */ + iBGa8 = *(pOutrow+3); + + if (iFGa8) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa8 == 0xFF) || (iBGa8 == 0)) + { /* then simply copy the values */ + *pOutrow = *pWorkrow; + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + *(pOutrow+3) = iFGa8; + } + else + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pOutrow+i), *(pWorkrow+i), iFGa8, *(pOutrow+i)); + } +#else + MNG_COMPOSE8 (*pOutrow, *pWorkrow, iFGa8, *pOutrow ); + MNG_COMPOSE8 (*(pOutrow+1), *(pWorkrow+1), iFGa8, *(pOutrow+1)); + MNG_COMPOSE8 (*(pOutrow+2), *(pWorkrow+2), iFGa8, *(pOutrow+2)); +#endif + /* alpha remains fully opaque !!! */ + } + else + { /* here we'll have to blend */ + MNG_BLEND8 (*pWorkrow, *(pWorkrow+1), *(pWorkrow+2), iFGa8, + *pOutrow, *(pOutrow+1), *(pOutrow+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pOutrow = iCr8; + *(pOutrow+1) = iCg8; + *(pOutrow+2) = iCb8; + *(pOutrow+3) = iCa8; + } + } + } + + pOutrow += 4; + pWorkrow += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEOVER_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_composeover_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint16p pWorkrow; + mng_uint16p pOutrow; + mng_int32 iX; + mng_uint16 iFGa16, iFGr16, iFGg16, iFGb16; + mng_uint16 iBGa16, iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16, iCa16; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEOVER_RGBA16, MNG_LC_START); +#endif + + pWorkrow = (mng_uint16p)pData->pRGBArow; + pOutrow = (mng_uint16p)(pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize)); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* get alpha values */ + iFGa16 = mng_get_uint16 ((mng_uint8p)(pWorkrow+3)); + iBGa16 = mng_get_uint16 ((mng_uint8p)(pOutrow+3)); + + if (iFGa16) /* any opacity at all ? */ + { /* fully opaque or background fully transparent ? */ + if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) + { /* then simply copy the values */ + *pOutrow = *pWorkrow; + *(pOutrow+1) = *(pWorkrow+1); + *(pOutrow+2) = *(pWorkrow+2); + *(pOutrow+3) = *(pWorkrow+3); + } + else + { /* get color values */ + iFGr16 = mng_get_uint16 ((mng_uint8p)pWorkrow); + iFGg16 = mng_get_uint16 ((mng_uint8p)(pWorkrow+1)); + iFGb16 = mng_get_uint16 ((mng_uint8p)(pWorkrow+2)); + iBGr16 = mng_get_uint16 ((mng_uint8p)pOutrow); + iBGg16 = mng_get_uint16 ((mng_uint8p)(pOutrow+1)); + iBGb16 = mng_get_uint16 ((mng_uint8p)(pOutrow+2)); + + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE16 (iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16 (iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16 (iFGb16, iFGb16, iFGa16, iBGb16); + + mng_put_uint16 ((mng_uint8p)pOutrow, iFGr16); + mng_put_uint16 ((mng_uint8p)(pOutrow+1), iFGg16); + mng_put_uint16 ((mng_uint8p)(pOutrow+2), iFGb16); + /* alpha remains fully opaque !!! */ + } + else + { /* here we'll have to blend */ + MNG_BLEND16 (iFGr16, iFGg16, iFGb16, iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + mng_put_uint16 ((mng_uint8p)pOutrow, iCr16); + mng_put_uint16 ((mng_uint8p)(pOutrow+1), iCg16); + mng_put_uint16 ((mng_uint8p)(pOutrow+2), iCb16); + mng_put_uint16 ((mng_uint8p)(pOutrow+3), iCa16); + } + } + } + + pOutrow += 4; + pWorkrow += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEOVER_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_composeunder_rgba8 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint8p pWorkrow; + mng_uint8p pOutrow; + mng_int32 iX; + mng_uint8 iFGa8, iBGa8; + mng_uint8 iCr8, iCg8, iCb8, iCa8; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEUNDER_RGBA8, MNG_LC_START); +#endif + + pWorkrow = pData->pRGBArow; + pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { + iFGa8 = *(pOutrow+3); /* get alpha values */ + iBGa8 = *(pWorkrow+3); + /* anything to do at all ? */ + if ((iBGa8) && (iFGa8 != 0xFF)) + { + if (iBGa8 == 0xFF) /* background fully opaque ? */ + { /* do alpha composing */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_COMPOSE + int i; + for (i=2; i >= 0; i--) + { + MNG_COMPOSE8 (*(pOutrow+i), *(pOutrow+i), iFGa8, *(pWorkrow+i)); + } +#else + MNG_COMPOSE8 (*pOutrow, *pOutrow, iFGa8, *pWorkrow ); + MNG_COMPOSE8 (*(pOutrow+1), *(pOutrow+1), iFGa8, *(pWorkrow+1)); + MNG_COMPOSE8 (*(pOutrow+2), *(pOutrow+2), iFGa8, *(pWorkrow+2)); +#endif + *(pOutrow+3) = 0xFF; /* alpha becomes fully opaque !!! */ + } + else + { /* here we'll have to blend */ + MNG_BLEND8 (*pOutrow, *(pOutrow+1), *(pOutrow+2), iFGa8, + *pWorkrow, *(pWorkrow+1), *(pWorkrow+2), iBGa8, + iCr8, iCg8, iCb8, iCa8); + /* and return the composed values */ + *pOutrow = iCr8; + *(pOutrow+1) = iCg8; + *(pOutrow+2) = iCb8; + *(pOutrow+3) = iCa8; + } + } + + pOutrow += 4; + pWorkrow += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEUNDER_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_composeunder_rgba16 (mng_datap pData) +{ + mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; + mng_uint16p pWorkrow; + mng_uint16p pOutrow; + mng_int32 iX; + mng_uint16 iFGa16, iFGr16, iFGg16, iFGb16; + mng_uint16 iBGa16, iBGr16, iBGg16, iBGb16; + mng_uint16 iCr16, iCg16, iCb16, iCa16; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEUNDER_RGBA16, MNG_LC_START); +#endif + + pWorkrow = (mng_uint16p)pData->pRGBArow; + pOutrow = (mng_uint16p)(pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + + (pData->iCol * pBuf->iSamplesize)); + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* get alpha values */ + iFGa16 = mng_get_uint16 ((mng_uint8p)(pOutrow+3)); + iBGa16 = mng_get_uint16 ((mng_uint8p)(pWorkrow+3)); + /* anything to do at all ? */ + if ((iBGa16) && (iFGa16 != 0xFFFF)) + { + iFGr16 = mng_get_uint16 ((mng_uint8p)pOutrow); + iFGg16 = mng_get_uint16 ((mng_uint8p)(pOutrow+1)); + iFGb16 = mng_get_uint16 ((mng_uint8p)(pOutrow+2)); + iBGr16 = mng_get_uint16 ((mng_uint8p)pWorkrow); + iBGg16 = mng_get_uint16 ((mng_uint8p)(pWorkrow+1)); + iBGb16 = mng_get_uint16 ((mng_uint8p)(pWorkrow+2)); + + if (iBGa16 == 0xFFFF) /* background fully opaque ? */ + { /* do alpha composing */ + MNG_COMPOSE16 (iFGr16, iFGr16, iFGa16, iBGr16); + MNG_COMPOSE16 (iFGg16, iFGg16, iFGa16, iBGg16); + MNG_COMPOSE16 (iFGb16, iFGb16, iFGa16, iBGb16); + + mng_put_uint16 ((mng_uint8p)pOutrow, iFGr16); + mng_put_uint16 ((mng_uint8p)(pOutrow+1), iFGg16); + mng_put_uint16 ((mng_uint8p)(pOutrow+2), iFGb16); + *(pOutrow+3) = 0xFFFF; /* alpha becomes fully opaque !!! */ + } + else + { /* here we'll have to blend */ + MNG_BLEND16 (iFGr16, iFGg16, iFGb16, iFGa16, + iBGr16, iBGg16, iBGb16, iBGa16, + iCr16, iCg16, iCb16, iCa16); + /* and return the composed values */ + mng_put_uint16 ((mng_uint8p)pOutrow, iCr16); + mng_put_uint16 ((mng_uint8p)(pOutrow+1), iCg16); + mng_put_uint16 ((mng_uint8p)(pOutrow+2), iCb16); + mng_put_uint16 ((mng_uint8p)(pOutrow+3), iCa16); + } + } + + pOutrow += 4; + pWorkrow += 4; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_COMPOSEUNDER_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif + +/* ************************************************************************** */ +/* * * */ +/* * PAST flip & tile routines - flip or tile a row of pixels * */ +/* * * */ +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_PAST +mng_retcode mng_flip_rgba8 (mng_datap pData) +{ + mng_uint32p pWorkrow; + mng_uint32p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_FLIP_RGBA8, MNG_LC_START); +#endif + /* setup temp pointers */ + pWorkrow = (mng_uint32p)pData->pRGBArow + pData->iRowsamples - 1; + pOutrow = (mng_uint32p)pData->pWorkrow; + /* swap original buffers */ + pData->pWorkrow = pData->pRGBArow; + pData->pRGBArow = (mng_uint8p)pOutrow; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* let's flip */ + *pOutrow = *pWorkrow; + pOutrow++; + pWorkrow--; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_FLIP_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_flip_rgba16 (mng_datap pData) +{ + mng_uint32p pWorkrow; + mng_uint32p pOutrow; + mng_int32 iX; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_FLIP_RGBA16, MNG_LC_START); +#endif + /* setup temp pointers */ + pWorkrow = (mng_uint32p)pData->pRGBArow + ((pData->iRowsamples - 1) << 1); + pOutrow = (mng_uint32p)pData->pWorkrow; + /* swap original buffers */ + pData->pWorkrow = pData->pRGBArow; + pData->pRGBArow = (mng_uint8p)pOutrow; + +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iRowsamples; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iRowsamples; iX++) +#endif + { /* let's flip */ + *pOutrow = *pWorkrow; + *(pOutrow + 1) = *(pWorkrow + 1); + + pOutrow += 2; + pWorkrow -= 2; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_FLIP_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_tile_rgba8 (mng_datap pData) +{ + mng_uint32p pWorkrow; + mng_uint32p pOutrow; + mng_int32 iX; + mng_uint32 iZ, iMax; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_TILE_RGBA8, MNG_LC_START); +#endif + + iZ = pData->iSourcel; /* indent ? */ + /* what's our source-length */ + iMax = ((mng_imagep)pData->pRetrieveobj)->pImgbuf->iWidth; + /* setup temp pointers */ + pWorkrow = (mng_uint32p)pData->pRGBArow + iZ; + pOutrow = (mng_uint32p)pData->pWorkrow; + /* swap original buffers */ + pData->pWorkrow = pData->pRGBArow; + pData->pRGBArow = (mng_uint8p)pOutrow; + + for (iX = pData->iDestl; iX < pData->iDestr; iX++) + { /* tiiiile */ + *pOutrow = *pWorkrow; + + pWorkrow++; + pOutrow++; + iZ++; + + if (iZ >= iMax) /* end of source ? */ + { + iZ = 0; + pWorkrow = (mng_uint32p)pData->pWorkrow; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_TILE_RGBA8, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_16BIT_SUPPORT +mng_retcode mng_tile_rgba16 (mng_datap pData) +{ + mng_uint32p pWorkrow; + mng_uint32p pOutrow; + mng_int32 iX; + mng_uint32 iZ, iMax; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_TILE_RGBA16, MNG_LC_START); +#endif + + iZ = pData->iSourcel; /* indent ? */ + /* what's our source-length */ + iMax = ((mng_imagep)pData->pRetrieveobj)->pImgbuf->iWidth; + /* setup temp pointers */ + pWorkrow = (mng_uint32p)pData->pRGBArow + (iZ << 1); + pOutrow = (mng_uint32p)pData->pWorkrow; + /* swap original buffers */ + pData->pWorkrow = pData->pRGBArow; + pData->pRGBArow = (mng_uint8p)pOutrow; + + for (iX = pData->iDestl; iX < pData->iDestr; iX++) + { /* tiiiile */ + *pOutrow = *pWorkrow; + *(pOutrow + 1) = *(pWorkrow + 1); + + pWorkrow += 2; + pOutrow += 2; + iZ++; + + if (iZ >= iMax) /* end of source ? */ + { + iZ = 0; + pWorkrow = (mng_uint32p)pData->pWorkrow; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_TILE_RGBA16, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif /* MNG_SKIPCHUNK_PAST */ + +/* ************************************************************************** */ + +#endif /* MNG_INCLUDE_DISPLAY_PROCS */ + +/* ************************************************************************** */ +/* * end of file * */ +/* ************************************************************************** */ |