diff options
| author | Qt by Nokia <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
|---|---|---|
| committer | axis <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
| commit | 38be0d13830efd2d98281c645c3a60afe05ffece (patch) | |
| tree | 6ea73f3ec77f7d153333779883e8120f82820abe /src/3rdparty/libmng/libmng_display.c | |
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
Diffstat (limited to 'src/3rdparty/libmng/libmng_display.c')
| -rw-r--r-- | src/3rdparty/libmng/libmng_display.c | 7140 |
1 files changed, 7140 insertions, 0 deletions
diff --git a/src/3rdparty/libmng/libmng_display.c b/src/3rdparty/libmng/libmng_display.c new file mode 100644 index 0000000000..81c2484b54 --- /dev/null +++ b/src/3rdparty/libmng/libmng_display.c @@ -0,0 +1,7140 @@ +/* ************************************************************************** */ +/* * For conditions of distribution and use, * */ +/* * see copyright notice in libmng.h * */ +/* ************************************************************************** */ +/* * * */ +/* * project : libmng * */ +/* * file : libmng_display.c copyright (c) 2000-2007 G.Juyn * */ +/* * version : 1.0.10 * */ +/* * * */ +/* * purpose : Display management (implementation) * */ +/* * * */ +/* * author : G.Juyn * */ +/* * * */ +/* * comment : implementation of the display management routines * */ +/* * * */ +/* * 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 * */ +/* * - fixed frame_delay misalignment * */ +/* * 0.5.1 - 05/12/2000 - G.Juyn * */ +/* * - added sanity check for frozen status * */ +/* * - changed trace to macro for callback error-reporting * */ +/* * 0.5.1 - 05/13/2000 - G.Juyn * */ +/* * - changed display_mend to reset state to initial or SAVE * */ +/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */ +/* * - added TERM animation object pointer (easier reference) * */ +/* * - added process_save & process_seek routines * */ +/* * 0.5.1 - 05/14/2000 - G.Juyn * */ +/* * - added save_state and restore_state for SAVE/SEEK/TERM * */ +/* * processing * */ +/* * * */ +/* * 0.5.2 - 05/20/2000 - G.Juyn * */ +/* * - added JNG support (JHDR/JDAT) * */ +/* * 0.5.2 - 05/23/2000 - G.Juyn * */ +/* * - fixed problem with DEFI clipping * */ +/* * 0.5.2 - 05/30/2000 - G.Juyn * */ +/* * - added delta-image support (DHDR,PROM,IPNG,IJNG) * */ +/* * 0.5.2 - 05/31/2000 - G.Juyn * */ +/* * - fixed pointer confusion (contributed by Tim Rowley) * */ +/* * 0.5.2 - 06/03/2000 - G.Juyn * */ +/* * - fixed makeup for Linux gcc compile * */ +/* * 0.5.2 - 06/05/2000 - G.Juyn * */ +/* * - added support for RGB8_A8 canvasstyle * */ +/* * 0.5.2 - 06/09/2000 - G.Juyn * */ +/* * - fixed timer-handling to run with Mozilla (Tim Rowley) * */ +/* * 0.5.2 - 06/10/2000 - G.Juyn * */ +/* * - fixed some compilation-warnings (contrib Jason Morris) * */ +/* * * */ +/* * 0.5.3 - 06/12/2000 - G.Juyn * */ +/* * - fixed display of stored JNG images * */ +/* * 0.5.3 - 06/13/2000 - G.Juyn * */ +/* * - fixed problem with BASI-IEND as object 0 * */ +/* * 0.5.3 - 06/16/2000 - G.Juyn * */ +/* * - changed progressive-display processing * */ +/* * 0.5.3 - 06/17/2000 - G.Juyn * */ +/* * - changed delta-image processing * */ +/* * 0.5.3 - 06/20/2000 - G.Juyn * */ +/* * - fixed some minor stuff * */ +/* * 0.5.3 - 06/21/2000 - G.Juyn * */ +/* * - added speed-modifier to timing routine * */ +/* * 0.5.3 - 06/22/2000 - G.Juyn * */ +/* * - added support for PPLT chunk processing * */ +/* * 0.5.3 - 06/29/2000 - G.Juyn * */ +/* * - swapped refresh parameters * */ +/* * * */ +/* * 0.9.0 - 06/30/2000 - G.Juyn * */ +/* * - changed refresh parameters to 'x,y,width,height' * */ +/* * * */ +/* * 0.9.1 - 07/07/2000 - G.Juyn * */ +/* * - implemented support for freeze/reset/resume & go_xxxx * */ +/* * 0.9.1 - 07/08/2000 - G.Juyn * */ +/* * - added support for improved timing * */ +/* * 0.9.1 - 07/14/2000 - G.Juyn * */ +/* * - changed EOF processing behavior * */ +/* * - fixed TERM delay processing * */ +/* * 0.9.1 - 07/15/2000 - G.Juyn * */ +/* * - fixed freeze & reset processing * */ +/* * 0.9.1 - 07/16/2000 - G.Juyn * */ +/* * - fixed storage of images during mng_read() * */ +/* * - fixed support for mng_display() after mng_read() * */ +/* * 0.9.1 - 07/24/2000 - G.Juyn * */ +/* * - fixed reading of still-images * */ +/* * * */ +/* * 0.9.2 - 08/05/2000 - G.Juyn * */ +/* * - changed file-prefixes * */ +/* * * */ +/* * 0.9.3 - 08/07/2000 - G.Juyn * */ +/* * - B111300 - fixup for improved portability * */ +/* * 0.9.3 - 08/21/2000 - G.Juyn * */ +/* * - fixed TERM processing delay of 0 msecs * */ +/* * 0.9.3 - 08/26/2000 - G.Juyn * */ +/* * - added MAGN chunk * */ +/* * 0.9.3 - 09/10/2000 - G.Juyn * */ +/* * - fixed problem with no refresh after TERM * */ +/* * - fixed DEFI behavior * */ +/* * 0.9.3 - 09/16/2000 - G.Juyn * */ +/* * - fixed timing & refresh behavior for single PNG/JNG * */ +/* * 0.9.3 - 09/19/2000 - G.Juyn * */ +/* * - refixed timing & refresh behavior for single PNG/JNG * */ +/* * 0.9.3 - 10/02/2000 - G.Juyn * */ +/* * - fixed timing again (this is getting boring...) * */ +/* * - refixed problem with no refresh after TERM * */ +/* * 0.9.3 - 10/16/2000 - G.Juyn * */ +/* * - added JDAA chunk * */ +/* * 0.9.3 - 10/17/2000 - G.Juyn * */ +/* * - fixed support for bKGD * */ +/* * 0.9.3 - 10/18/2000 - G.Juyn * */ +/* * - fixed delta-processing behavior * */ +/* * 0.9.3 - 10/19/2000 - G.Juyn * */ +/* * - added storage for pixel-/alpha-sampledepth for delta's * */ +/* * 0.9.3 - 10/27/2000 - G.Juyn * */ +/* * - fixed separate read() & display() processing * */ +/* * * */ +/* * 0.9.4 - 10/31/2000 - G.Juyn * */ +/* * - fixed possible loop in display_resume() (Thanks Vova!) * */ +/* * 0.9.4 - 11/20/2000 - G.Juyn * */ +/* * - fixed unwanted repetition in mng_readdisplay() * */ +/* * 0.9.4 - 11/24/2000 - G.Juyn * */ +/* * - moved restore of object 0 to libmng_display * */ +/* * - added restore of object 0 to TERM processing !!! * */ +/* * - fixed TERM delay processing * */ +/* * - fixed TERM end processing (count = 0) * */ +/* * 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 test filter-methods 1 & 65 * */ +/* * - set default level-set for filtertype=64 to all zeroes * */ +/* * * */ +/* * 0.9.5 - 1/20/2001 - G.Juyn * */ +/* * - fixed compiler-warnings Mozilla (thanks Tim) * */ +/* * 0.9.5 - 1/23/2001 - G.Juyn * */ +/* * - fixed timing-problem with switching framing_modes * */ +/* * * */ +/* * 1.0.1 - 02/08/2001 - G.Juyn * */ +/* * - added MEND processing callback * */ +/* * 1.0.1 - 02/13/2001 - G.Juyn * */ +/* * - fixed first FRAM_MODE=4 timing problem * */ +/* * 1.0.1 - 04/21/2001 - G.Juyn * */ +/* * - fixed memory-leak for JNGs with alpha (Thanks Gregg!) * */ +/* * - added BGRA8 canvas with premultiplied alpha * */ +/* * * */ +/* * 1.0.2 - 06/25/2001 - G.Juyn * */ +/* * - fixed memory-leak with delta-images (Thanks Michael!) * */ +/* * * */ +/* * 1.0.5 - 08/15/2002 - G.Juyn * */ +/* * - completed PROM support * */ +/* * - completed delta-image support * */ +/* * 1.0.5 - 08/19/2002 - G.Juyn * */ +/* * - B597134 - libmng pollutes the linker namespace * */ +/* * 1.0.5 - 09/13/2002 - G.Juyn * */ +/* * - fixed read/write of MAGN chunk * */ +/* * 1.0.5 - 09/15/2002 - G.Juyn * */ +/* * - fixed LOOP iteration=0 special case * */ +/* * 1.0.5 - 09/19/2002 - G.Juyn * */ +/* * - fixed color-correction for restore-background handling * */ +/* * - optimized restore-background for bKGD cases * */ +/* * - cleaned up some old stuff * */ +/* * 1.0.5 - 09/20/2002 - G.Juyn * */ +/* * - finished support for BACK image & tiling * */ +/* * - added support for PAST * */ +/* * 1.0.5 - 09/22/2002 - G.Juyn * */ +/* * - added bgrx8 canvas (filler byte) * */ +/* * 1.0.5 - 10/05/2002 - G.Juyn * */ +/* * - fixed dropping mix of frozen/unfrozen objects * */ +/* * 1.0.5 - 10/07/2002 - G.Juyn * */ +/* * - added proposed change in handling of TERM- & if-delay * */ +/* * - added another fix for misplaced TERM chunk * */ +/* * - completed support for condition=2 in TERM chunk * */ +/* * 1.0.5 - 10/18/2002 - G.Juyn * */ +/* * - fixed clipping-problem with BACK tiling (Thanks Sakura!) * */ +/* * 1.0.5 - 10/20/2002 - G.Juyn * */ +/* * - fixed processing for multiple objects in MAGN * */ +/* * - fixed display of visible target of PAST operation * */ +/* * 1.0.5 - 10/30/2002 - G.Juyn * */ +/* * - modified TERM/MEND processing for max(1, TERM_delay, * */ +/* * interframe_delay) * */ +/* * 1.0.5 - 11/04/2002 - G.Juyn * */ +/* * - fixed layer- & frame-counting during read() * */ +/* * - fixed goframe/golayer/gotime processing * */ +/* * 1.0.5 - 01/19/2003 - G.Juyn * */ +/* * - B654627 - fixed SEGV when no gettickcount callback * */ +/* * - B664383 - fixed typo * */ +/* * - finalized changes in TERM/final_delay to elected proposal* */ +/* * * */ +/* * 1.0.6 - 05/11/2003 - G. Juyn * */ +/* * - added conditionals around canvas update routines * */ +/* * 1.0.6 - 05/25/2003 - G.R-P * */ +/* * - added MNG_SKIPCHUNK_cHNK footprint optimizations * */ +/* * 1.0.6 - 07/07/2003 - G.R-P * */ +/* * - added conditionals around some JNG-supporting code * */ +/* * - added conditionals around 16-bit supporting code * */ +/* * - reversed some loops to use decrementing counter * */ +/* * - combined init functions into one function * */ +/* * 1.0.6 - 07/10/2003 - G.R-P * */ +/* * - replaced nested switches with simple init setup function * */ +/* * 1.0.6 - 07/29/2003 - G.R-P * */ +/* * - added conditionals around PAST chunk support * */ +/* * 1.0.6 - 08/17/2003 - G.R-P * */ +/* * - added conditionals around non-VLC chunk support * */ +/* * * */ +/* * 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 * */ +/* * * */ +/* * 1.0.8 - 03/31/2004 - G.Juyn * */ +/* * - fixed problem with PAST usage where source > dest * */ +/* * 1.0.8 - 05/04/2004 - G.R-P. * */ +/* * - fixed misplaced 16-bit conditionals * */ +/* * * */ +/* * 1.0.9 - 09/18/2004 - G.R-P. * */ +/* * - revised some SKIPCHUNK conditionals * */ +/* * 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 - 12/11/2004 - G.Juyn * */ +/* * - added conditional MNG_OPTIMIZE_DISPLAYCALLS * */ +/* * 1.0.9 - 12/20/2004 - G.Juyn * */ +/* * - cleaned up macro-invocations (thanks to D. Airlie) * */ +/* * * */ +/* * 1.0.10 - 07/06/2005 - G.R-P. * */ +/* * - added more SKIPCHUNK conditionals * */ +/* * 1.0.10 - 12/28/2005 - G.R-P. * */ +/* * - added missing SKIPCHUNK_MAGN conditional * */ +/* * 1.0.10 - 03/07/2006 - (thanks to W. Manthey) * */ +/* * - added CANVAS_RGB555 and CANVAS_BGR555 * */ +/* * 1.0.10 - 04/08/2007 - G.Juyn * */ +/* * - fixed several compiler warnings * */ +/* * 1.0.10 - 04/08/2007 - G.Juyn * */ +/* * - added support for mPNG proposal * */ +/* * 1.0.10 - 04/12/2007 - G.Juyn * */ +/* * - added support for ANG proposal * */ +/* * * */ +/* ************************************************************************** */ + +#include "libmng.h" +#include "libmng_data.h" +#include "libmng_error.h" +#include "libmng_trace.h" +#ifdef __BORLANDC__ +#pragma hdrstop +#endif +#include "libmng_chunks.h" +#include "libmng_objects.h" +#include "libmng_object_prc.h" +#include "libmng_memory.h" +#include "libmng_zlib.h" +#include "libmng_jpeg.h" +#include "libmng_cms.h" +#include "libmng_pixels.h" +#include "libmng_display.h" + +#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) +#pragma option -A /* force ANSI-C */ +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_DISPLAY_PROCS + +/* ************************************************************************** */ + +MNG_LOCAL mng_retcode set_delay (mng_datap pData, + mng_uint32 iInterval) +{ + if (!iInterval) /* at least 1 msec please! */ + iInterval = 1; + + if (pData->bRunning) /* only when really displaying */ + if (!pData->fSettimer ((mng_handle)pData, iInterval)) + MNG_ERROR (pData, MNG_APPTIMERERROR); + +#ifdef MNG_SUPPORT_DYNAMICMNG + if ((!pData->bDynamic) || (pData->bRunning)) +#else + if (pData->bRunning) +#endif + pData->bTimerset = MNG_TRUE; /* and indicate so */ + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_LOCAL mng_uint32 calculate_delay (mng_datap pData, + mng_uint32 iDelay) +{ + mng_uint32 iTicks = pData->iTicks; + mng_uint32 iWaitfor = 1; /* default non-MNG delay */ + + if (!iTicks) /* tick_count not specified ? */ + if (pData->eImagetype == mng_it_mng) + iTicks = 1000; + + if (iTicks) + { + switch (pData->iSpeed) /* honor speed modifier */ + { + case mng_st_fast : + { + iWaitfor = (mng_uint32)(( 500 * iDelay) / iTicks); + break; + } + case mng_st_slow : + { + iWaitfor = (mng_uint32)((3000 * iDelay) / iTicks); + break; + } + case mng_st_slowest : + { + iWaitfor = (mng_uint32)((8000 * iDelay) / iTicks); + break; + } + default : + { + iWaitfor = (mng_uint32)((1000 * iDelay) / iTicks); + } + } + } + + return iWaitfor; +} + +/* ************************************************************************** */ +/* * * */ +/* * Progressive display refresh - does the call to the refresh callback * */ +/* * and sets the timer to allow the app to perform the actual refresh to * */ +/* * the screen (eg. process its main message-loop) * */ +/* * * */ +/* ************************************************************************** */ + +mng_retcode mng_display_progressive_refresh (mng_datap pData, + mng_uint32 iInterval) +{ + { /* let the app refresh first ? */ + if ((pData->bRunning) && (!pData->bSkipping) && + (pData->iUpdatetop < pData->iUpdatebottom) && (pData->iUpdateleft < pData->iUpdateright)) + { + if (!pData->fRefresh (((mng_handle)pData), + pData->iUpdateleft, pData->iUpdatetop, + pData->iUpdateright - pData->iUpdateleft, + pData->iUpdatebottom - pData->iUpdatetop)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + pData->iUpdateleft = 0; /* reset update-region */ + pData->iUpdateright = 0; + pData->iUpdatetop = 0; + pData->iUpdatebottom = 0; /* reset refreshneeded indicator */ + pData->bNeedrefresh = MNG_FALSE; + /* interval requested ? */ + if ((!pData->bFreezing) && (iInterval)) + { /* setup the timer */ + mng_retcode iRetcode = set_delay (pData, iInterval); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } + } + + return MNG_NOERROR; +} + +/* ************************************************************************** */ +/* * * */ +/* * Generic display routines * */ +/* * * */ +/* ************************************************************************** */ + +MNG_LOCAL mng_retcode interframe_delay (mng_datap pData) +{ + mng_uint32 iWaitfor = 0; + mng_uint32 iInterval; + mng_uint32 iRuninterval; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INTERFRAME_DELAY, MNG_LC_START); +#endif + + { +#ifndef MNG_SKIPCHUNK_FRAM + if (pData->iFramedelay > 0 || pData->bForcedelay) /* real delay ? */ + { /* let the app refresh first ? */ + pData->bForcedelay = MNG_FALSE; + if ((pData->bRunning) && (!pData->bSkipping) && + (pData->iUpdatetop < pData->iUpdatebottom) && (pData->iUpdateleft < pData->iUpdateright)) + if (!pData->fRefresh (((mng_handle)pData), + pData->iUpdateleft, pData->iUpdatetop, + pData->iUpdateright - pData->iUpdateleft, + pData->iUpdatebottom - pData->iUpdatetop)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + pData->iUpdateleft = 0; /* reset update-region */ + pData->iUpdateright = 0; + pData->iUpdatetop = 0; + pData->iUpdatebottom = 0; /* reset refreshneeded indicator */ + pData->bNeedrefresh = MNG_FALSE; + +#ifndef MNG_SKIPCHUNK_TERM + if (pData->bOnlyfirstframe) /* only processing first frame after TERM ? */ + { + pData->iFramesafterTERM++; + /* did we do a frame yet ? */ + if (pData->iFramesafterTERM > 1) + { /* then that's it; just stop right here ! */ + pData->pCurraniobj = MNG_NULL; + pData->bRunning = MNG_FALSE; + + return MNG_NOERROR; + } + } +#endif + + if (pData->fGettickcount) + { /* get current tickcount */ + pData->iRuntime = pData->fGettickcount ((mng_handle)pData); + /* calculate interval since last sync-point */ + if (pData->iRuntime < pData->iSynctime) + iRuninterval = pData->iRuntime + ~pData->iSynctime + 1; + else + iRuninterval = pData->iRuntime - pData->iSynctime; + /* calculate actual run-time */ + if (pData->iRuntime < pData->iStarttime) + pData->iRuntime = pData->iRuntime + ~pData->iStarttime + 1; + else + pData->iRuntime = pData->iRuntime - pData->iStarttime; + } + else + { + iRuninterval = 0; + } + + iWaitfor = calculate_delay (pData, pData->iFramedelay); + + if (iWaitfor > iRuninterval) /* delay necessary ? */ + iInterval = iWaitfor - iRuninterval; + else + iInterval = 1; /* force app to process messageloop */ + /* set the timer ? */ + if (((pData->bRunning) || (pData->bSearching) || (pData->bReading)) && + (!pData->bSkipping)) + { + iRetcode = set_delay (pData, iInterval); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } + + if (!pData->bSkipping) /* increase frametime in advance */ + pData->iFrametime = pData->iFrametime + iWaitfor; + /* setup for next delay */ + pData->iFramedelay = pData->iNextdelay; + pData->iAccumdelay += pData->iFramedelay; +#endif + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_INTERFRAME_DELAY, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_LOCAL void set_display_routine (mng_datap pData) +{ /* actively running ? */ + if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping)) + { + switch (pData->iCanvasstyle) /* determine display routine */ + { +#ifndef MNG_SKIPCANVAS_RGB8 + case MNG_CANVAS_RGB8 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb8; break; } +#endif +#ifndef MNG_SKIPCANVAS_RGBA8 + case MNG_CANVAS_RGBA8 : { pData->fDisplayrow = (mng_fptr)mng_display_rgba8; break; } +#endif +#ifndef MNG_SKIPCANVAS_RGBA8_PM + case MNG_CANVAS_RGBA8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_rgba8_pm; break; } +#endif +#ifndef MNG_SKIPCANVAS_ARGB8 + case MNG_CANVAS_ARGB8 : { pData->fDisplayrow = (mng_fptr)mng_display_argb8; break; } +#endif +#ifndef MNG_SKIPCANVAS_ARGB8_PM + case MNG_CANVAS_ARGB8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_argb8_pm; break; } +#endif +#ifndef MNG_SKIPCANVAS_RGB8_A8 + case MNG_CANVAS_RGB8_A8 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb8_a8; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGR8 + case MNG_CANVAS_BGR8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr8; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGRX8 + case MNG_CANVAS_BGRX8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgrx8; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGRA8 + case MNG_CANVAS_BGRA8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgra8; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGRA8_PM + case MNG_CANVAS_BGRA8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_bgra8_pm; break; } +#endif +#ifndef MNG_SKIPCANVAS_ABGR8 + case MNG_CANVAS_ABGR8 : { pData->fDisplayrow = (mng_fptr)mng_display_abgr8; break; } +#endif +#ifndef MNG_SKIPCANVAS_ABGR8_PM + case MNG_CANVAS_ABGR8_PM: { pData->fDisplayrow = (mng_fptr)mng_display_abgr8_pm; break; } +#endif +#ifndef MNG_SKIPCANVAS_RGB565 + case MNG_CANVAS_RGB565 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb565; break; } +#endif +#ifndef MNG_SKIPCANVAS_RGBA565 + case MNG_CANVAS_RGBA565 : { pData->fDisplayrow = (mng_fptr)mng_display_rgba565; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGR565 + case MNG_CANVAS_BGR565 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr565; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGRA565 + case MNG_CANVAS_BGRA565 : { pData->fDisplayrow = (mng_fptr)mng_display_bgra565; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGR565_A8 + case MNG_CANVAS_BGR565_A8 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr565_a8; break; } +#endif +#ifndef MNG_SKIPCANVAS_RGB555 + case MNG_CANVAS_RGB555 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb555; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGR555 + case MNG_CANVAS_BGR555 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr555; break; } +#endif + +#ifndef MNG_NO_16BIT_SUPPORT +/* case MNG_CANVAS_RGB16 : { pData->fDisplayrow = (mng_fptr)mng_display_rgb16; break; } */ +/* case MNG_CANVAS_RGBA16 : { pData->fDisplayrow = (mng_fptr)mng_display_rgba16; break; } */ +/* case MNG_CANVAS_ARGB16 : { pData->fDisplayrow = (mng_fptr)mng_display_argb16; break; } */ +/* case MNG_CANVAS_BGR16 : { pData->fDisplayrow = (mng_fptr)mng_display_bgr16; break; } */ +/* case MNG_CANVAS_BGRA16 : { pData->fDisplayrow = (mng_fptr)mng_display_bgra16; break; } */ +/* case MNG_CANVAS_ABGR16 : { pData->fDisplayrow = (mng_fptr)mng_display_abgr16; break; } */ +#endif +/* case MNG_CANVAS_INDEX8 : { pData->fDisplayrow = (mng_fptr)mng_display_index8; break; } */ +/* case MNG_CANVAS_INDEXA8 : { pData->fDisplayrow = (mng_fptr)mng_display_indexa8; break; } */ +/* case MNG_CANVAS_AINDEX8 : { pData->fDisplayrow = (mng_fptr)mng_display_aindex8; break; } */ +/* case MNG_CANVAS_GRAY8 : { pData->fDisplayrow = (mng_fptr)mng_display_gray8; break; } */ +/* case MNG_CANVAS_AGRAY8 : { pData->fDisplayrow = (mng_fptr)mng_display_agray8; break; } */ +/* case MNG_CANVAS_GRAYA8 : { pData->fDisplayrow = (mng_fptr)mng_display_graya8; break; } */ +#ifndef MNG_NO_16BIT_SUPPORT +/* case MNG_CANVAS_GRAY16 : { pData->fDisplayrow = (mng_fptr)mng_display_gray16; break; } */ +/* case MNG_CANVAS_GRAYA16 : { pData->fDisplayrow = (mng_fptr)mng_display_graya16; break; } */ +/* case MNG_CANVAS_AGRAY16 : { pData->fDisplayrow = (mng_fptr)mng_display_agray16; break; } */ +#endif +/* case MNG_CANVAS_DX15 : { pData->fDisplayrow = (mng_fptr)mng_display_dx15; break; } */ +/* case MNG_CANVAS_DX16 : { pData->fDisplayrow = (mng_fptr)mng_display_dx16; break; } */ + } + } + + return; +} + +/* ************************************************************************** */ + +MNG_LOCAL mng_retcode load_bkgdlayer (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_LOAD_BKGDLAYER, MNG_LC_START); +#endif + /* actively running ? */ + if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping)) + { + mng_int32 iY; + mng_retcode iRetcode; + mng_bool bColorcorr = MNG_FALSE; + /* save values */ + mng_int32 iDestl = pData->iDestl; + mng_int32 iDestr = pData->iDestr; + mng_int32 iDestt = pData->iDestt; + mng_int32 iDestb = pData->iDestb; + mng_int32 iSourcel = pData->iSourcel; + mng_int32 iSourcer = pData->iSourcer; + mng_int32 iSourcet = pData->iSourcet; + mng_int32 iSourceb = pData->iSourceb; + mng_int8 iPass = pData->iPass; + mng_int32 iRow = pData->iRow; + mng_int32 iRowinc = pData->iRowinc; + mng_int32 iCol = pData->iCol; + mng_int32 iColinc = pData->iColinc; + mng_int32 iRowsamples = pData->iRowsamples; + mng_int32 iRowsize = pData->iRowsize; + mng_uint8p pPrevrow = pData->pPrevrow; + mng_uint8p pRGBArow = pData->pRGBArow; + mng_bool bIsRGBA16 = pData->bIsRGBA16; + mng_bool bIsOpaque = pData->bIsOpaque; + mng_fptr fCorrectrow = pData->fCorrectrow; + mng_fptr fDisplayrow = pData->fDisplayrow; + mng_fptr fRetrieverow = pData->fRetrieverow; + mng_objectp pCurrentobj = pData->pCurrentobj; + mng_objectp pRetrieveobj = pData->pRetrieveobj; + + pData->iDestl = 0; /* determine clipping region */ + pData->iDestt = 0; + pData->iDestr = pData->iWidth; + pData->iDestb = pData->iHeight; + +#ifndef MNG_SKIPCHUNK_FRAM + if (pData->bFrameclipping) /* frame clipping specified ? */ + { + pData->iDestl = MAX_COORD (pData->iDestl, pData->iFrameclipl); + pData->iDestt = MAX_COORD (pData->iDestt, pData->iFrameclipt); + pData->iDestr = MIN_COORD (pData->iDestr, pData->iFrameclipr); + pData->iDestb = MIN_COORD (pData->iDestb, pData->iFrameclipb); + } +#endif + /* anything to clear ? */ + if ((pData->iDestr >= pData->iDestl) && (pData->iDestb >= pData->iDestt)) + { + pData->iPass = -1; /* these are the object's dimensions now */ + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iWidth; + pData->iRowsize = pData->iRowsamples << 2; + pData->bIsRGBA16 = MNG_FALSE; /* let's keep it simple ! */ + pData->bIsOpaque = MNG_TRUE; + + pData->iSourcel = 0; /* source relative to destination */ + pData->iSourcer = pData->iDestr - pData->iDestl; + pData->iSourcet = 0; + pData->iSourceb = pData->iDestb - pData->iDestt; + + set_display_routine (pData); /* determine display routine */ + /* default restore using preset BG color */ + pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgcolor; + +#ifndef MNG_SKIPCHUNK_bKGD + if (((pData->eImagetype == mng_it_png) || (pData->eImagetype == mng_it_jng)) && + (pData->bUseBKGD)) + { /* prefer bKGD in PNG/JNG */ + if (!pData->pCurrentobj) + pData->pCurrentobj = pData->pObjzero; + + if (((mng_imagep)pData->pCurrentobj)->pImgbuf->bHasBKGD) + { + pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bkgd; + bColorcorr = MNG_TRUE; + } + } +#endif + + if (pData->fGetbkgdline) /* background-canvas-access callback set ? */ + { + switch (pData->iBkgdstyle) + { +#ifndef MNG_SKIPCANVAS_RGB8 + case MNG_CANVAS_RGB8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_rgb8; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGR8 + case MNG_CANVAS_BGR8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgr8; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGRX8 + case MNG_CANVAS_BGRX8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgrx8; break; } +#endif +#ifndef MNG_SKIPCANVAS_BGR565 + case MNG_CANVAS_BGR565 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgr565; break; } +#endif +#ifndef MNG_SKIPCANVAS_RGB565 + case MNG_CANVAS_RGB565 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_rgb565; break; } +#endif +#ifndef MNG_NO_16BIT_SUPPORT + /* case MNG_CANVAS_RGB16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_rgb16; break; } */ + /* case MNG_CANVAS_BGR16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_bgr16; break; } */ +#endif + /* case MNG_CANVAS_INDEX8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_index8; break; } */ + /* case MNG_CANVAS_GRAY8 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_gray8; break; } */ +#ifndef MNG_NO_16BIT_SUPPORT + /* case MNG_CANVAS_GRAY16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_gray16; break; } */ +#endif + /* case MNG_CANVAS_DX15 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_dx15; break; } */ + /* case MNG_CANVAS_DX16 : { pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_dx16; break; } */ + } + } + +#ifndef MNG_SKIPCHUNK_BACK + if (pData->bHasBACK) + { /* background image ? */ + if ((pData->iBACKmandatory & 0x02) && (pData->iBACKimageid)) + { + pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_backcolor; + bColorcorr = MNG_TRUE; + } + else /* background color ? */ + if (pData->iBACKmandatory & 0x01) + { + pData->fRestbkgdrow = (mng_fptr)mng_restore_bkgd_backcolor; + bColorcorr = MNG_TRUE; + } + } +#endif + + pData->fCorrectrow = MNG_NULL; /* default no color-correction */ + + if (bColorcorr) /* do we have to do color-correction ? */ + { +#ifdef MNG_NO_CMS + iRetcode = MNG_NOERROR; +#else +#if defined(MNG_FULL_CMS) /* determine color-management routine */ + iRetcode = mng_init_full_cms (pData, MNG_TRUE, MNG_FALSE, MNG_FALSE); +#elif defined(MNG_GAMMA_ONLY) + iRetcode = mng_init_gamma_only (pData, MNG_TRUE, MNG_FALSE, MNG_FALSE); +#elif defined(MNG_APP_CMS) + iRetcode = mng_init_app_cms (pData, MNG_TRUE, MNG_FALSE, MNG_FALSE); +#endif + if (iRetcode) /* on error bail out */ + return iRetcode; +#endif /* MNG_NO_CMS */ + } + /* get a temporary row-buffer */ + MNG_ALLOC (pData, pData->pRGBArow, pData->iRowsize); + + iY = pData->iDestt; /* this is where we start */ + iRetcode = MNG_NOERROR; /* so far, so good */ + + while ((!iRetcode) && (iY < pData->iDestb)) + { /* restore a background row */ + iRetcode = ((mng_restbkgdrow)pData->fRestbkgdrow) (pData); + /* color correction ? */ + if ((!iRetcode) && (pData->fCorrectrow)) + iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); + + if (!iRetcode) /* so... display it */ + iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); + + if (!iRetcode) + iRetcode = mng_next_row (pData); + + iY++; /* and next line */ + } + /* drop the temporary row-buffer */ + MNG_FREE (pData, pData->pRGBArow, pData->iRowsize); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#if defined(MNG_FULL_CMS) /* cleanup cms stuff */ + if (bColorcorr) /* did we do color-correction ? */ + { + iRetcode = mng_clear_cms (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif +#ifndef MNG_SKIPCHUNK_BACK + /* background image ? */ + if ((pData->bHasBACK) && (pData->iBACKmandatory & 0x02) && (pData->iBACKimageid)) + { + mng_imagep pImage; + /* let's find that object then */ + pData->pRetrieveobj = mng_find_imageobject (pData, pData->iBACKimageid); + pImage = (mng_imagep)pData->pRetrieveobj; + /* exists, viewable and visible ? */ + if ((pImage) && (pImage->bViewable) && (pImage->bVisible)) + { /* will it fall within the target region ? */ + if ((pImage->iPosx < pData->iDestr) && (pImage->iPosy < pData->iDestb) && + ((pData->iBACKtile) || + ((pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth >= pData->iDestl) && + (pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight >= pData->iDestt) )) && + ((!pImage->bClipped) || + ((pImage->iClipl <= pImage->iClipr) && (pImage->iClipt <= pImage->iClipb) && + (pImage->iClipl < pData->iDestr) && (pImage->iClipr >= pData->iDestl) && + (pImage->iClipt < pData->iDestb) && (pImage->iClipb >= pData->iDestt) ))) + { /* right; we've got ourselves something to do */ + if (pImage->bClipped) /* clip output region with image's clipping region ? */ + { + if (pImage->iClipl > pData->iDestl) + pData->iDestl = pImage->iClipl; + if (pImage->iClipr < pData->iDestr) + pData->iDestr = pImage->iClipr; + if (pImage->iClipt > pData->iDestt) + pData->iDestt = pImage->iClipt; + if (pImage->iClipb < pData->iDestb) + pData->iDestb = pImage->iClipb; + } + /* image offset does some extra clipping too ! */ + if (pImage->iPosx > pData->iDestl) + pData->iDestl = pImage->iPosx; + if (pImage->iPosy > pData->iDestt) + pData->iDestt = pImage->iPosy; + + if (!pData->iBACKtile) /* without tiling further clipping is needed */ + { + if (pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth < pData->iDestr) + pData->iDestr = pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth; + if (pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight < pData->iDestb) + pData->iDestb = pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight; + } + + pData->iSourcel = 0; /* source relative to destination */ + pData->iSourcer = pData->iDestr - pData->iDestl; + pData->iSourcet = 0; + pData->iSourceb = pData->iDestb - pData->iDestt; + /* 16-bit background ? */ + +#ifdef MNG_NO_16BIT_SUPPORT + pData->bIsRGBA16 = MNG_FALSE; +#else + pData->bIsRGBA16 = (mng_bool)(pImage->pImgbuf->iBitdepth > 8); +#endif + /* let restore routine know the offsets !!! */ + pData->iBackimgoffsx = pImage->iPosx; + pData->iBackimgoffsy = pImage->iPosy; + pData->iBackimgwidth = pImage->pImgbuf->iWidth; + pData->iBackimgheight = pImage->pImgbuf->iHeight; + pData->iRow = 0; /* start at the top again !! */ + /* determine background object retrieval routine */ + switch (pImage->pImgbuf->iColortype) + { + case 0 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_g16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_g8; + + pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS); + break; + } + + case 2 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8; + + pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS); + break; + } + + case 3 : { pData->fRetrieverow = (mng_fptr)mng_retrieve_idx8; + pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS); + break; + } + + case 4 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + case 6 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + case 8 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_g16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_g8; + + pData->bIsOpaque = MNG_TRUE; + break; + } + + case 10 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8; + + pData->bIsOpaque = MNG_TRUE; + break; + } + + case 12 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + case 14 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + } + +#ifdef MNG_NO_CMS + iRetcode = MNG_NOERROR; +#else +#if defined(MNG_FULL_CMS) /* determine color-management routine */ + iRetcode = mng_init_full_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#elif defined(MNG_GAMMA_ONLY) + iRetcode = mng_init_gamma_only (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#elif defined(MNG_APP_CMS) + iRetcode = mng_init_app_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#endif + if (iRetcode) /* on error bail out */ + return iRetcode; +#endif /* MNG_NO_CMS */ + /* get temporary row-buffers */ + MNG_ALLOC (pData, pData->pPrevrow, pData->iRowsize); + MNG_ALLOC (pData, pData->pRGBArow, pData->iRowsize); + + iY = pData->iDestt; /* this is where we start */ + iRetcode = MNG_NOERROR; /* so far, so good */ + + while ((!iRetcode) && (iY < pData->iDestb)) + { /* restore a background row */ + iRetcode = mng_restore_bkgd_backimage (pData); + /* color correction ? */ + if ((!iRetcode) && (pData->fCorrectrow)) + iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); + + if (!iRetcode) /* so... display it */ + iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); + + if (!iRetcode) + iRetcode = mng_next_row (pData); + + iY++; /* and next line */ + } + /* drop temporary row-buffers */ + MNG_FREE (pData, pData->pRGBArow, pData->iRowsize); + MNG_FREE (pData, pData->pPrevrow, pData->iRowsize); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#if defined(MNG_FULL_CMS) /* cleanup cms stuff */ + iRetcode = mng_clear_cms (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; +#endif + } + } + } +#endif + } + + pData->iDestl = iDestl; /* restore values */ + pData->iDestr = iDestr; + pData->iDestt = iDestt; + pData->iDestb = iDestb; + pData->iSourcel = iSourcel; + pData->iSourcer = iSourcer; + pData->iSourcet = iSourcet; + pData->iSourceb = iSourceb; + pData->iPass = iPass; + pData->iRow = iRow; + pData->iRowinc = iRowinc; + pData->iCol = iCol; + pData->iColinc = iColinc; + pData->iRowsamples = iRowsamples; + pData->iRowsize = iRowsize; + pData->pPrevrow = pPrevrow; + pData->pRGBArow = pRGBArow; + pData->bIsRGBA16 = bIsRGBA16; + pData->bIsOpaque = bIsOpaque; + pData->fCorrectrow = fCorrectrow; + pData->fDisplayrow = fDisplayrow; + pData->fRetrieverow = fRetrieverow; + pData->pCurrentobj = pCurrentobj; + pData->pRetrieveobj = pRetrieveobj; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_LOAD_BKGDLAYER, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_LOCAL mng_retcode clear_canvas (mng_datap pData) +{ + mng_int32 iY; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_CLEAR_CANVAS, MNG_LC_START); +#endif + + pData->iDestl = 0; /* clipping region is full canvas! */ + pData->iDestt = 0; + pData->iDestr = pData->iWidth; + pData->iDestb = pData->iHeight; + + pData->iSourcel = 0; /* source is same as destination */ + pData->iSourcer = pData->iWidth; + pData->iSourcet = 0; + pData->iSourceb = pData->iHeight; + + pData->iPass = -1; /* these are the object's dimensions now */ + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pData->iWidth; + pData->iRowsize = pData->iRowsamples << 2; + pData->bIsRGBA16 = MNG_FALSE; /* let's keep it simple ! */ + pData->bIsOpaque = MNG_TRUE; + + set_display_routine (pData); /* determine display routine */ + /* get a temporary row-buffer */ + /* it's transparent black by default!! */ + MNG_ALLOC (pData, pData->pRGBArow, pData->iRowsize); + + iY = pData->iDestt; /* this is where we start */ + iRetcode = MNG_NOERROR; /* so far, so good */ + + while ((!iRetcode) && (iY < pData->iDestb)) + { /* clear a row then */ + iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); + + if (!iRetcode) + iRetcode = mng_next_row (pData); /* adjust variables for next row */ + + iY++; /* and next line */ + } + /* drop the temporary row-buffer */ + MNG_FREE (pData, pData->pRGBArow, pData->iRowsize); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_CLEAR_CANVAS, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_LOCAL mng_retcode next_frame (mng_datap pData, + mng_uint8 iFramemode, + mng_uint8 iChangedelay, + mng_uint32 iDelay, + mng_uint8 iChangetimeout, + mng_uint32 iTimeout, + mng_uint8 iChangeclipping, + mng_uint8 iCliptype, + mng_int32 iClipl, + mng_int32 iClipr, + mng_int32 iClipt, + mng_int32 iClipb) +{ + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_FRAME, MNG_LC_START); +#endif + + if (!pData->iBreakpoint) /* no previous break here ? */ + { +#ifndef MNG_SKIPCHUNK_FRAM + mng_uint8 iOldmode = pData->iFramemode; + /* interframe delay required ? */ + if ((iOldmode == 2) || (iOldmode == 4)) + { + if ((pData->iFrameseq) && (iFramemode != 1) && (iFramemode != 3)) + iRetcode = interframe_delay (pData); + else + pData->iFramedelay = pData->iNextdelay; + } + else + { /* delay before inserting background layer? */ + if ((pData->bFramedone) && (iFramemode == 4)) + iRetcode = interframe_delay (pData); + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + /* now we'll assume we're in the next frame! */ + if (iFramemode) /* save the new framing mode ? */ + { + pData->iFRAMmode = iFramemode; + pData->iFramemode = iFramemode; + } + else /* reload default */ + pData->iFramemode = pData->iFRAMmode; + + if (iChangedelay) /* delay changed ? */ + { + pData->iNextdelay = iDelay; /* for *after* next subframe */ + + if ((iOldmode == 2) || (iOldmode == 4)) + pData->iFramedelay = pData->iFRAMdelay; + + if (iChangedelay == 2) /* also overall ? */ + pData->iFRAMdelay = iDelay; + } + else + { /* reload default */ + pData->iNextdelay = pData->iFRAMdelay; + } + + if (iChangetimeout) /* timeout changed ? */ + { /* for next subframe */ + pData->iFrametimeout = iTimeout; + + if ((iChangetimeout == 2) || /* also overall ? */ + (iChangetimeout == 4) || + (iChangetimeout == 6) || + (iChangetimeout == 8)) + pData->iFRAMtimeout = iTimeout; + } + else /* reload default */ + pData->iFrametimeout = pData->iFRAMtimeout; + + if (iChangeclipping) /* clipping changed ? */ + { + pData->bFrameclipping = MNG_TRUE; + + if (!iCliptype) /* absolute ? */ + { + pData->iFrameclipl = iClipl; + pData->iFrameclipr = iClipr; + pData->iFrameclipt = iClipt; + pData->iFrameclipb = iClipb; + } + else /* relative */ + { + pData->iFrameclipl = pData->iFrameclipl + iClipl; + pData->iFrameclipr = pData->iFrameclipr + iClipr; + pData->iFrameclipt = pData->iFrameclipt + iClipt; + pData->iFrameclipb = pData->iFrameclipb + iClipb; + } + + if (iChangeclipping == 2) /* also overall ? */ + { + pData->bFRAMclipping = MNG_TRUE; + + if (!iCliptype) /* absolute ? */ + { + pData->iFRAMclipl = iClipl; + pData->iFRAMclipr = iClipr; + pData->iFRAMclipt = iClipt; + pData->iFRAMclipb = iClipb; + } + else /* relative */ + { + pData->iFRAMclipl = pData->iFRAMclipl + iClipl; + pData->iFRAMclipr = pData->iFRAMclipr + iClipr; + pData->iFRAMclipt = pData->iFRAMclipt + iClipt; + pData->iFRAMclipb = pData->iFRAMclipb + iClipb; + } + } + } + else + { /* reload defaults */ + pData->bFrameclipping = pData->bFRAMclipping; + pData->iFrameclipl = pData->iFRAMclipl; + pData->iFrameclipr = pData->iFRAMclipr; + pData->iFrameclipt = pData->iFRAMclipt; + pData->iFrameclipb = pData->iFRAMclipb; + } +#endif + } + + if (!pData->bTimerset) /* timer still off ? */ + { + if ( +#ifndef MNG_SKIPCHUNK_FRAM + (pData->iFramemode == 4) || /* insert background layer after a new frame */ +#endif + (!pData->iLayerseq)) /* and certainly before the very first layer */ + iRetcode = load_bkgdlayer (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + pData->iFrameseq++; /* count the frame ! */ + pData->bFramedone = MNG_TRUE; /* and indicate we've done one */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_FRAME, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_LOCAL mng_retcode next_layer (mng_datap pData) +{ + mng_imagep pImage; + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_LAYER, MNG_LC_START); +#endif + +#ifndef MNG_SKIPCHUNK_FRAM + if (!pData->iBreakpoint) /* no previous break here ? */ + { /* interframe delay required ? */ + if ((pData->eImagetype == mng_it_mng) && (pData->iLayerseq) && + ((pData->iFramemode == 1) || (pData->iFramemode == 3))) + iRetcode = interframe_delay (pData); + else + pData->iFramedelay = pData->iNextdelay; + + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif + + if (!pData->bTimerset) /* timer still off ? */ + { + if (!pData->iLayerseq) /* restore background for the very first layer ? */ + { /* wait till IDAT/JDAT for PNGs & JNGs !!! */ + if ((pData->eImagetype == mng_it_png) || (pData->eImagetype == mng_it_jng)) + pData->bRestorebkgd = MNG_TRUE; + else + { /* for MNG we do it right away */ + iRetcode = load_bkgdlayer (pData); + pData->iLayerseq++; /* and it counts as a layer then ! */ + } + } +#ifndef MNG_SKIPCHUNK_FRAM + else + if (pData->iFramemode == 3) /* restore background for each layer ? */ + iRetcode = load_bkgdlayer (pData); +#endif + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* processing a delta-image ? */ + pImage = (mng_imagep)pData->pDeltaImage; + else +#endif + pImage = (mng_imagep)pData->pCurrentobj; + + if (!pImage) /* not an active object ? */ + pImage = (mng_imagep)pData->pObjzero; + /* determine display rectangle */ + pData->iDestl = MAX_COORD ((mng_int32)0, pImage->iPosx); + pData->iDestt = MAX_COORD ((mng_int32)0, pImage->iPosy); + /* is it a valid buffer ? */ + if ((pImage->pImgbuf->iWidth) && (pImage->pImgbuf->iHeight)) + { + pData->iDestr = MIN_COORD ((mng_int32)pData->iWidth, + pImage->iPosx + (mng_int32)pImage->pImgbuf->iWidth ); + pData->iDestb = MIN_COORD ((mng_int32)pData->iHeight, + pImage->iPosy + (mng_int32)pImage->pImgbuf->iHeight); + } + else /* it's a single image ! */ + { + pData->iDestr = MIN_COORD ((mng_int32)pData->iWidth, + (mng_int32)pData->iDatawidth ); + pData->iDestb = MIN_COORD ((mng_int32)pData->iHeight, + (mng_int32)pData->iDataheight); + } + +#ifndef MNG_SKIPCHUNK_FRAM + if (pData->bFrameclipping) /* frame clipping specified ? */ + { + pData->iDestl = MAX_COORD (pData->iDestl, pData->iFrameclipl); + pData->iDestt = MAX_COORD (pData->iDestt, pData->iFrameclipt); + pData->iDestr = MIN_COORD (pData->iDestr, pData->iFrameclipr); + pData->iDestb = MIN_COORD (pData->iDestb, pData->iFrameclipb); + } +#endif + + if (pImage->bClipped) /* is the image clipped itself ? */ + { + pData->iDestl = MAX_COORD (pData->iDestl, pImage->iClipl); + pData->iDestt = MAX_COORD (pData->iDestt, pImage->iClipt); + pData->iDestr = MIN_COORD (pData->iDestr, pImage->iClipr); + pData->iDestb = MIN_COORD (pData->iDestb, pImage->iClipb); + } + /* determine source starting point */ + pData->iSourcel = MAX_COORD ((mng_int32)0, pData->iDestl - pImage->iPosx); + pData->iSourcet = MAX_COORD ((mng_int32)0, pData->iDestt - pImage->iPosy); + + if ((pImage->pImgbuf->iWidth) && (pImage->pImgbuf->iHeight)) + { /* and maximum size */ + pData->iSourcer = MIN_COORD ((mng_int32)pImage->pImgbuf->iWidth, + pData->iSourcel + pData->iDestr - pData->iDestl); + pData->iSourceb = MIN_COORD ((mng_int32)pImage->pImgbuf->iHeight, + pData->iSourcet + pData->iDestb - pData->iDestt); + } + else /* it's a single image ! */ + { + pData->iSourcer = pData->iSourcel + pData->iDestr - pData->iDestl; + pData->iSourceb = pData->iSourcet + pData->iDestb - pData->iDestt; + } + + pData->iLayerseq++; /* count the layer ! */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_NEXT_LAYER, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_display_image (mng_datap pData, + mng_imagep pImage, + mng_bool bLayeradvanced) +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_IMAGE, MNG_LC_START); +#endif + /* actively running ? */ +#ifndef MNG_SKIPCHUNK_MAGN + if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping)) + { + if ( (!pData->iBreakpoint) && /* needs magnification ? */ + ( (pImage->iMAGN_MethodX) || (pImage->iMAGN_MethodY) ) ) + { + iRetcode = mng_magnify_imageobject (pData, pImage); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } +#endif + + pData->pRetrieveobj = pImage; /* so retrieve-row and color-correction can find it */ + + if (!bLayeradvanced) /* need to advance the layer ? */ + { + mng_imagep pSave = pData->pCurrentobj; + pData->pCurrentobj = pImage; + next_layer (pData); /* advance to next layer */ + pData->pCurrentobj = pSave; + } + /* need to restore the background ? */ + if ((!pData->bTimerset) && (pData->bRestorebkgd)) + { + mng_imagep pSave = pData->pCurrentobj; + pData->pCurrentobj = pImage; + pData->bRestorebkgd = MNG_FALSE; + iRetcode = load_bkgdlayer (pData); + pData->pCurrentobj = pSave; + + if (iRetcode) /* on error bail out */ + return iRetcode; + + pData->iLayerseq++; /* and it counts as a layer then ! */ + } + /* actively running ? */ + if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping)) + { + if (!pData->bTimerset) /* all systems still go ? */ + { + pData->iBreakpoint = 0; /* let's make absolutely sure... */ + /* anything to display ? */ + if ((pData->iDestr >= pData->iDestl) && (pData->iDestb >= pData->iDestt)) + { + mng_int32 iY; + + set_display_routine (pData); /* determine display routine */ + /* and image-buffer retrieval routine */ + switch (pImage->pImgbuf->iColortype) + { + case 0 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_g16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_g8; + + pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS); + break; + } + + case 2 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8; + + pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS); + break; + } + + + case 3 : { pData->fRetrieverow = (mng_fptr)mng_retrieve_idx8; + pData->bIsOpaque = (mng_bool)(!pImage->pImgbuf->bHasTRNS); + break; + } + + + case 4 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + + case 6 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + case 8 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_g16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_g8; + + pData->bIsOpaque = MNG_TRUE; + break; + } + + case 10 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8; + + pData->bIsOpaque = MNG_TRUE; + break; + } + + + case 12 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + + case 14 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + } + + pData->iPass = -1; /* these are the object's dimensions now */ + pData->iRow = pData->iSourcet; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = pImage->pImgbuf->iWidth; + pData->iRowsize = pData->iRowsamples << 2; + pData->bIsRGBA16 = MNG_FALSE; + /* adjust for 16-bit object ? */ +#ifndef MNG_NO_16BIT_SUPPORT + if (pImage->pImgbuf->iBitdepth > 8) + { + pData->bIsRGBA16 = MNG_TRUE; + pData->iRowsize = pData->iRowsamples << 3; + } +#endif + + pData->fCorrectrow = MNG_NULL; /* default no color-correction */ + +#ifdef MNG_NO_CMS + iRetcode = MNG_NOERROR; +#else +#if defined(MNG_FULL_CMS) /* determine color-management routine */ + iRetcode = mng_init_full_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#elif defined(MNG_GAMMA_ONLY) + iRetcode = mng_init_gamma_only (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#elif defined(MNG_APP_CMS) + iRetcode = mng_init_app_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#endif + if (iRetcode) /* on error bail out */ + return iRetcode; +#endif /* MNG_NO_CMS */ + /* get a temporary row-buffer */ + MNG_ALLOC (pData, pData->pRGBArow, pData->iRowsize); + + iY = pData->iSourcet; /* this is where we start */ + + while ((!iRetcode) && (iY < pData->iSourceb)) + { /* get a row */ + iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData); + /* color correction ? */ + if ((!iRetcode) && (pData->fCorrectrow)) + iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); + + if (!iRetcode) /* so... display it */ + iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); + + if (!iRetcode) /* adjust variables for next row */ + iRetcode = mng_next_row (pData); + + iY++; /* and next line */ + } + /* drop the temporary row-buffer */ + MNG_FREE (pData, pData->pRGBArow, pData->iRowsize); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#if defined(MNG_FULL_CMS) /* cleanup cms stuff */ + iRetcode = mng_clear_cms (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; +#endif + } + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DISPLAY_IMAGE, MNG_LC_END); +#endif + + return MNG_NOERROR; /* whehehe, this is good ! */ +} + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +mng_retcode mng_execute_delta_image (mng_datap pData, + mng_imagep pTarget, + mng_imagep pDelta) +{ + mng_imagedatap pBuftarget = pTarget->pImgbuf; + mng_imagedatap pBufdelta = pDelta->pImgbuf; + mng_uint32 iY; + mng_retcode iRetcode; + mng_ptr pSaveRGBA; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_EXECUTE_DELTA_IMAGE, MNG_LC_START); +#endif + /* actively running ? */ + if (((pData->bRunning) || (pData->bSearching)) && (!pData->bSkipping)) + { + if (pBufdelta->bHasPLTE) /* palette in delta ? */ + { + mng_uint32 iX; + /* new palette larger than old one ? */ + if ((!pBuftarget->bHasPLTE) || (pBuftarget->iPLTEcount < pBufdelta->iPLTEcount)) + pBuftarget->iPLTEcount = pBufdelta->iPLTEcount; + /* it's definitely got a PLTE now */ + pBuftarget->bHasPLTE = MNG_TRUE; + + for (iX = 0; iX < pBufdelta->iPLTEcount; iX++) + { + pBuftarget->aPLTEentries[iX].iRed = pBufdelta->aPLTEentries[iX].iRed; + pBuftarget->aPLTEentries[iX].iGreen = pBufdelta->aPLTEentries[iX].iGreen; + pBuftarget->aPLTEentries[iX].iBlue = pBufdelta->aPLTEentries[iX].iBlue; + } + } + + if (pBufdelta->bHasTRNS) /* cheap transparency in delta ? */ + { + switch (pData->iColortype) /* drop it into the target */ + { + case 0: { /* gray */ + pBuftarget->iTRNSgray = pBufdelta->iTRNSgray; + pBuftarget->iTRNSred = 0; + pBuftarget->iTRNSgreen = 0; + pBuftarget->iTRNSblue = 0; + pBuftarget->iTRNScount = 0; + break; + } + case 2: { /* rgb */ + pBuftarget->iTRNSgray = 0; + pBuftarget->iTRNSred = pBufdelta->iTRNSred; + pBuftarget->iTRNSgreen = pBufdelta->iTRNSgreen; + pBuftarget->iTRNSblue = pBufdelta->iTRNSblue; + pBuftarget->iTRNScount = 0; + break; + } + case 3: { /* indexed */ + pBuftarget->iTRNSgray = 0; + pBuftarget->iTRNSred = 0; + pBuftarget->iTRNSgreen = 0; + pBuftarget->iTRNSblue = 0; + /* existing range smaller than new one ? */ + if ((!pBuftarget->bHasTRNS) || (pBuftarget->iTRNScount < pBufdelta->iTRNScount)) + pBuftarget->iTRNScount = pBufdelta->iTRNScount; + + MNG_COPY (pBuftarget->aTRNSentries, pBufdelta->aTRNSentries, pBufdelta->iTRNScount); + break; + } + } + + pBuftarget->bHasTRNS = MNG_TRUE; /* tell it it's got a tRNS now */ + } + +#ifndef MNG_SKIPCHUNK_bKGD + if (pBufdelta->bHasBKGD) /* bkgd in source ? */ + { /* drop it onto the target */ + pBuftarget->bHasBKGD = MNG_TRUE; + pBuftarget->iBKGDindex = pBufdelta->iBKGDindex; + pBuftarget->iBKGDgray = pBufdelta->iBKGDgray; + pBuftarget->iBKGDred = pBufdelta->iBKGDred; + pBuftarget->iBKGDgreen = pBufdelta->iBKGDgreen; + pBuftarget->iBKGDblue = pBufdelta->iBKGDblue; + } +#endif + + if (pBufdelta->bHasGAMA) /* gamma in source ? */ + { + pBuftarget->bHasGAMA = MNG_TRUE; /* drop it onto the target */ + pBuftarget->iGamma = pBufdelta->iGamma; + } + +#ifndef MNG_SKIPCHUNK_cHRM + if (pBufdelta->bHasCHRM) /* chroma in delta ? */ + { /* drop it onto the target */ + pBuftarget->bHasCHRM = MNG_TRUE; + pBuftarget->iWhitepointx = pBufdelta->iWhitepointx; + pBuftarget->iWhitepointy = pBufdelta->iWhitepointy; + pBuftarget->iPrimaryredx = pBufdelta->iPrimaryredx; + pBuftarget->iPrimaryredy = pBufdelta->iPrimaryredy; + pBuftarget->iPrimarygreenx = pBufdelta->iPrimarygreenx; + pBuftarget->iPrimarygreeny = pBufdelta->iPrimarygreeny; + pBuftarget->iPrimarybluex = pBufdelta->iPrimarybluex; + pBuftarget->iPrimarybluey = pBufdelta->iPrimarybluey; + } +#endif + +#ifndef MNG_SKIPCHUNK_sRGB + if (pBufdelta->bHasSRGB) /* sRGB in delta ? */ + { /* drop it onto the target */ + pBuftarget->bHasSRGB = MNG_TRUE; + pBuftarget->iRenderingintent = pBufdelta->iRenderingintent; + } +#endif + +#ifndef MNG_SKIPCHUNK_iCCP + if (pBufdelta->bHasICCP) /* ICC profile in delta ? */ + { + pBuftarget->bHasICCP = MNG_TRUE; /* drop it onto the target */ + + if (pBuftarget->pProfile) /* profile existed ? */ + MNG_FREEX (pData, pBuftarget->pProfile, pBuftarget->iProfilesize); + /* allocate a buffer & copy it */ + MNG_ALLOC (pData, pBuftarget->pProfile, pBufdelta->iProfilesize); + MNG_COPY (pBuftarget->pProfile, pBufdelta->pProfile, pBufdelta->iProfilesize); + /* store its length as well */ + pBuftarget->iProfilesize = pBufdelta->iProfilesize; + } +#endif + /* need to execute delta pixels ? */ + if ((!pData->bDeltaimmediate) && (pData->iDeltatype != MNG_DELTATYPE_NOCHANGE)) + { + pData->fScalerow = MNG_NULL; /* not needed by default */ + + switch (pBufdelta->iBitdepth) /* determine scaling routine */ + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + switch (pBuftarget->iBitdepth) + { + case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g2; break; } + case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g4; break; } + + case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g1_g16; break; } +#endif + } + break; + } + + case 2 : { + switch (pBuftarget->iBitdepth) + { + case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g1; break; } + case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g4; break; } + case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g2_g16; break; } +#endif + } + break; + } + + case 4 : { + switch (pBuftarget->iBitdepth) + { + case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g1; break; } + case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g2; break; } + case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g4_g16; break; } +#endif + } + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + + case 8 : { + switch (pBufdelta->iColortype) + { + case 0 : ; + case 3 : ; + case 8 : { + switch (pBuftarget->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g1; break; } + case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g2; break; } + case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g4; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fScalerow = (mng_fptr)mng_scale_g8_g16; break; } +#endif + } + break; + } + case 2 : ; + case 10 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pBuftarget->iBitdepth == 16) + pData->fScalerow = (mng_fptr)mng_scale_rgb8_rgb16; +#endif + break; + } + case 4 : ; + case 12 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pBuftarget->iBitdepth == 16) + pData->fScalerow = (mng_fptr)mng_scale_ga8_ga16; +#endif + break; + } + case 6 : ; + case 14 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pBuftarget->iBitdepth == 16) + pData->fScalerow = (mng_fptr)mng_scale_rgba8_rgba16; +#endif + break; + } + } + break; + } + +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + switch (pBufdelta->iColortype) + { + case 0 : ; + case 3 : ; + case 8 : { + switch (pBuftarget->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g1; break; } + case 2 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g2; break; } + case 4 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g4; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { pData->fScalerow = (mng_fptr)mng_scale_g16_g8; break; } + } + break; + } + case 2 : ; + case 10 : { + if (pBuftarget->iBitdepth == 8) + pData->fScalerow = (mng_fptr)mng_scale_rgb16_rgb8; + break; + } + case 4 : ; + case 12 : { + if (pBuftarget->iBitdepth == 8) + pData->fScalerow = (mng_fptr)mng_scale_ga16_ga8; + break; + } + case 6 : ; + case 14 : { + if (pBuftarget->iBitdepth == 8) + pData->fScalerow = (mng_fptr)mng_scale_rgba16_rgba8; + break; + } + } + break; + } +#endif + + } + + pData->fDeltarow = MNG_NULL; /* let's assume there's nothing to do */ + + switch (pBuftarget->iColortype) /* determine delta processing routine */ + { + case 0 : ; + case 8 : { /* gray */ + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3) || + (pBufdelta->iColortype == 8)) + { + switch (pBuftarget->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->fDeltarow = (mng_fptr)mng_delta_g1_g1; break; } + case 2 : { pData->fDeltarow = (mng_fptr)mng_delta_g2_g2; break; } + case 4 : { pData->fDeltarow = (mng_fptr)mng_delta_g4_g4; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_g8_g8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_g16_g16; break; } +#endif + } + } + } + + break; + } + + case 2 : ; + case 10 : { /* rgb */ + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + if ((pBufdelta->iColortype == 2) || (pBufdelta->iColortype == 10)) + { + switch (pBuftarget->iBitdepth) + { + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_rgb8_rgb8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgb16_rgb16; break; } +#endif + } + } + } + + break; + } + + case 3 : { /* indexed; abuse gray routines */ + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3)) + { + switch (pBuftarget->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->fDeltarow = (mng_fptr)mng_delta_g1_g1; break; } + case 2 : { pData->fDeltarow = (mng_fptr)mng_delta_g2_g2; break; } + case 4 : { pData->fDeltarow = (mng_fptr)mng_delta_g4_g4; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_g8_g8; break; } + } + } + } + + break; + } + + case 4 : ; + case 12 : { /* gray + alpha */ + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + if ((pBufdelta->iColortype == 4) || (pBufdelta->iColortype == 12)) + { + switch (pBuftarget->iBitdepth) + { + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_ga8_ga8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_ga16_ga16; break; } +#endif + } + } + } + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) ) + { + if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3) || + (pBufdelta->iColortype == 8)) + { + switch (pBuftarget->iBitdepth) + { + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_ga8_g8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_ga16_g16; break; } +#endif + } + } + } + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) ) + { + if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3)) + { + switch (pBuftarget->iBitdepth) + { + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_ga8_a8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_ga16_a16; break; } +#endif + } + } + } + + break; + } + + case 6 : ; + case 14 : { /* rgb + alpha */ + if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + if ((pBufdelta->iColortype == 6) || (pBufdelta->iColortype == 14)) + { + switch (pBuftarget->iBitdepth) + { + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba8_rgba8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba16_rgba16; break; } +#endif + } + } + } + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) ) + { + if ((pBufdelta->iColortype == 2) || (pBufdelta->iColortype == 10)) + { + switch (pBuftarget->iBitdepth) + { + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba8_rgb8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba16_rgb16; break; } +#endif + } + } + } + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) ) + { + if ((pBufdelta->iColortype == 0) || (pBufdelta->iColortype == 3)) + { + switch (pBuftarget->iBitdepth) + { + case 8 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba8_a8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fDeltarow = (mng_fptr)mng_delta_rgba16_a16; break; } +#endif + } + } + } + + break; + } + + } + + if (pData->fDeltarow) /* do we need to take action ? */ + { + pData->iPass = -1; /* setup row dimensions and stuff */ + pData->iRow = pData->iDeltaBlocky; + pData->iRowinc = 1; + pData->iCol = pData->iDeltaBlockx; + pData->iColinc = 1; + pData->iRowsamples = pBufdelta->iWidth; + pData->iRowsize = pBuftarget->iRowsize; + /* indicate where to retrieve & where to store */ + pData->pRetrieveobj = (mng_objectp)pDelta; + pData->pStoreobj = (mng_objectp)pTarget; + + pSaveRGBA = pData->pRGBArow; /* save current temp-buffer! */ + /* get a temporary row-buffer */ + MNG_ALLOC (pData, pData->pRGBArow, (pBufdelta->iRowsize << 1)); + + iY = 0; /* this is where we start */ + iRetcode = MNG_NOERROR; /* still oke for now */ + + while ((!iRetcode) && (iY < pBufdelta->iHeight)) + { /* get a row */ + mng_uint8p pWork = pBufdelta->pImgdata + (iY * pBufdelta->iRowsize); + + MNG_COPY (pData->pRGBArow, pWork, pBufdelta->iRowsize); + + if (pData->fScalerow) /* scale it (if necessary) */ + iRetcode = ((mng_scalerow)pData->fScalerow) (pData); + + if (!iRetcode) /* and... execute it */ + iRetcode = ((mng_deltarow)pData->fDeltarow) (pData); + + if (!iRetcode) /* adjust variables for next row */ + iRetcode = mng_next_row (pData); + + iY++; /* and next line */ + } + /* drop the temporary row-buffer */ + MNG_FREE (pData, pData->pRGBArow, (pBufdelta->iRowsize << 1)); + pData->pRGBArow = pSaveRGBA; /* restore saved temp-buffer! */ + + if (iRetcode) /* on error bail out */ + return iRetcode; + + } + else + MNG_ERROR (pData, MNG_INVALIDDELTA); + + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_EXECUTE_DELTA_IMAGE, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_NO_DELTA_PNG */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SAVE +MNG_LOCAL mng_retcode save_state (mng_datap pData) +{ + mng_savedatap pSave; + mng_imagep pImage; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SAVE_STATE, MNG_LC_START); +#endif + + if (pData->pSavedata) /* sanity check */ + MNG_ERROR (pData, MNG_INTERNALERROR); + /* get a buffer for saving */ + MNG_ALLOC (pData, pData->pSavedata, sizeof (mng_savedata)); + + pSave = pData->pSavedata; /* address it more directly */ + /* and copy global data from the main struct */ +#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) + pSave->bHasglobalPLTE = pData->bHasglobalPLTE; + pSave->bHasglobalTRNS = pData->bHasglobalTRNS; + pSave->bHasglobalGAMA = pData->bHasglobalGAMA; + pSave->bHasglobalCHRM = pData->bHasglobalCHRM; + pSave->bHasglobalSRGB = pData->bHasglobalSRGB; + pSave->bHasglobalICCP = pData->bHasglobalICCP; + pSave->bHasglobalBKGD = pData->bHasglobalBKGD; +#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */ + +#ifndef MNG_SKIPCHUNK_BACK + pSave->iBACKred = pData->iBACKred; + pSave->iBACKgreen = pData->iBACKgreen; + pSave->iBACKblue = pData->iBACKblue; + pSave->iBACKmandatory = pData->iBACKmandatory; + pSave->iBACKimageid = pData->iBACKimageid; + pSave->iBACKtile = pData->iBACKtile; +#endif + +#ifndef MNG_SKIPCHUNK_FRAM + pSave->iFRAMmode = pData->iFRAMmode; + pSave->iFRAMdelay = pData->iFRAMdelay; + pSave->iFRAMtimeout = pData->iFRAMtimeout; + pSave->bFRAMclipping = pData->bFRAMclipping; + pSave->iFRAMclipl = pData->iFRAMclipl; + pSave->iFRAMclipr = pData->iFRAMclipr; + pSave->iFRAMclipt = pData->iFRAMclipt; + pSave->iFRAMclipb = pData->iFRAMclipb; +#endif + + pSave->iGlobalPLTEcount = pData->iGlobalPLTEcount; + + MNG_COPY (pSave->aGlobalPLTEentries, pData->aGlobalPLTEentries, sizeof (mng_rgbpaltab)); + + pSave->iGlobalTRNSrawlen = pData->iGlobalTRNSrawlen; + MNG_COPY (pSave->aGlobalTRNSrawdata, pData->aGlobalTRNSrawdata, 256); + + pSave->iGlobalGamma = pData->iGlobalGamma; + +#ifndef MNG_SKIPCHUNK_cHRM + pSave->iGlobalWhitepointx = pData->iGlobalWhitepointx; + pSave->iGlobalWhitepointy = pData->iGlobalWhitepointy; + pSave->iGlobalPrimaryredx = pData->iGlobalPrimaryredx; + pSave->iGlobalPrimaryredy = pData->iGlobalPrimaryredy; + pSave->iGlobalPrimarygreenx = pData->iGlobalPrimarygreenx; + pSave->iGlobalPrimarygreeny = pData->iGlobalPrimarygreeny; + pSave->iGlobalPrimarybluex = pData->iGlobalPrimarybluex; + pSave->iGlobalPrimarybluey = pData->iGlobalPrimarybluey; +#endif + +#ifndef MNG_SKIPCHUNK_sRGB + pSave->iGlobalRendintent = pData->iGlobalRendintent; +#endif + +#ifndef MNG_SKIPCHUNK_iCCP + pSave->iGlobalProfilesize = pData->iGlobalProfilesize; + + if (pSave->iGlobalProfilesize) /* has a profile ? */ + { /* then copy that ! */ + MNG_ALLOC (pData, pSave->pGlobalProfile, pSave->iGlobalProfilesize); + MNG_COPY (pSave->pGlobalProfile, pData->pGlobalProfile, pSave->iGlobalProfilesize); + } +#endif + +#ifndef MNG_SKIPCHUNK_bKGD + pSave->iGlobalBKGDred = pData->iGlobalBKGDred; + pSave->iGlobalBKGDgreen = pData->iGlobalBKGDgreen; + pSave->iGlobalBKGDblue = pData->iGlobalBKGDblue; +#endif + + /* freeze current image objects */ + pImage = (mng_imagep)pData->pFirstimgobj; + + while (pImage) + { /* freeze the object AND its buffer */ + pImage->bFrozen = MNG_TRUE; + pImage->pImgbuf->bFrozen = MNG_TRUE; + /* neeeext */ + pImage = (mng_imagep)pImage->sHeader.pNext; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_SAVE_STATE, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +mng_retcode mng_reset_objzero (mng_datap pData) +{ + mng_imagep pImage = (mng_imagep)pData->pObjzero; + mng_retcode iRetcode = mng_reset_object_details (pData, pImage, 0, 0, 0, + 0, 0, 0, 0, MNG_TRUE); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + pImage->bVisible = MNG_TRUE; + pImage->bViewable = MNG_TRUE; + pImage->iPosx = 0; + pImage->iPosy = 0; + pImage->bClipped = MNG_FALSE; + pImage->iClipl = 0; + pImage->iClipr = 0; + pImage->iClipt = 0; + pImage->iClipb = 0; +#ifndef MNG_SKIPCHUNK_MAGN + pImage->iMAGN_MethodX = 0; + pImage->iMAGN_MethodY = 0; + pImage->iMAGN_MX = 0; + pImage->iMAGN_MY = 0; + pImage->iMAGN_ML = 0; + pImage->iMAGN_MR = 0; + pImage->iMAGN_MT = 0; + pImage->iMAGN_MB = 0; +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +MNG_LOCAL mng_retcode restore_state (mng_datap pData) +{ +#ifndef MNG_SKIPCHUNK_SAVE + mng_savedatap pSave; +#endif + mng_imagep pImage; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_STATE, MNG_LC_START); +#endif + /* restore object 0 status !!! */ + iRetcode = mng_reset_objzero (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + /* fresh cycle; fake no frames done yet */ + pData->bFramedone = MNG_FALSE; + +#ifndef MNG_SKIPCHUNK_SAVE + if (pData->pSavedata) /* do we have a saved state ? */ + { + pSave = pData->pSavedata; /* address it more directly */ + /* and copy it back to the main struct */ +#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) + pData->bHasglobalPLTE = pSave->bHasglobalPLTE; + pData->bHasglobalTRNS = pSave->bHasglobalTRNS; + pData->bHasglobalGAMA = pSave->bHasglobalGAMA; + pData->bHasglobalCHRM = pSave->bHasglobalCHRM; + pData->bHasglobalSRGB = pSave->bHasglobalSRGB; + pData->bHasglobalICCP = pSave->bHasglobalICCP; + pData->bHasglobalBKGD = pSave->bHasglobalBKGD; +#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */ + +#ifndef MNG_SKIPCHUNK_BACK + pData->iBACKred = pSave->iBACKred; + pData->iBACKgreen = pSave->iBACKgreen; + pData->iBACKblue = pSave->iBACKblue; + pData->iBACKmandatory = pSave->iBACKmandatory; + pData->iBACKimageid = pSave->iBACKimageid; + pData->iBACKtile = pSave->iBACKtile; +#endif + +#ifndef MNG_SKIPCHUNK_FRAM + pData->iFRAMmode = pSave->iFRAMmode; +/* pData->iFRAMdelay = pSave->iFRAMdelay; */ + pData->iFRAMtimeout = pSave->iFRAMtimeout; + pData->bFRAMclipping = pSave->bFRAMclipping; + pData->iFRAMclipl = pSave->iFRAMclipl; + pData->iFRAMclipr = pSave->iFRAMclipr; + pData->iFRAMclipt = pSave->iFRAMclipt; + pData->iFRAMclipb = pSave->iFRAMclipb; + /* NOOOOOOOOOOOO */ +/* pData->iFramemode = pSave->iFRAMmode; + pData->iFramedelay = pSave->iFRAMdelay; + pData->iFrametimeout = pSave->iFRAMtimeout; + pData->bFrameclipping = pSave->bFRAMclipping; + pData->iFrameclipl = pSave->iFRAMclipl; + pData->iFrameclipr = pSave->iFRAMclipr; + pData->iFrameclipt = pSave->iFRAMclipt; + pData->iFrameclipb = pSave->iFRAMclipb; */ + +/* pData->iNextdelay = pSave->iFRAMdelay; */ + pData->iNextdelay = pData->iFramedelay; +#endif + + pData->iGlobalPLTEcount = pSave->iGlobalPLTEcount; + MNG_COPY (pData->aGlobalPLTEentries, pSave->aGlobalPLTEentries, sizeof (mng_rgbpaltab)); + + pData->iGlobalTRNSrawlen = pSave->iGlobalTRNSrawlen; + MNG_COPY (pData->aGlobalTRNSrawdata, pSave->aGlobalTRNSrawdata, 256); + + pData->iGlobalGamma = pSave->iGlobalGamma; + +#ifndef MNG_SKIPCHUNK_cHRM + pData->iGlobalWhitepointx = pSave->iGlobalWhitepointx; + pData->iGlobalWhitepointy = pSave->iGlobalWhitepointy; + pData->iGlobalPrimaryredx = pSave->iGlobalPrimaryredx; + pData->iGlobalPrimaryredy = pSave->iGlobalPrimaryredy; + pData->iGlobalPrimarygreenx = pSave->iGlobalPrimarygreenx; + pData->iGlobalPrimarygreeny = pSave->iGlobalPrimarygreeny; + pData->iGlobalPrimarybluex = pSave->iGlobalPrimarybluex; + pData->iGlobalPrimarybluey = pSave->iGlobalPrimarybluey; +#endif + + pData->iGlobalRendintent = pSave->iGlobalRendintent; + +#ifndef MNG_SKIPCHUNK_iCCP + pData->iGlobalProfilesize = pSave->iGlobalProfilesize; + + if (pData->iGlobalProfilesize) /* has a profile ? */ + { /* then copy that ! */ + MNG_ALLOC (pData, pData->pGlobalProfile, pData->iGlobalProfilesize); + MNG_COPY (pData->pGlobalProfile, pSave->pGlobalProfile, pData->iGlobalProfilesize); + } +#endif + +#ifndef MNG_SKIPCHUNK_bKGD + pData->iGlobalBKGDred = pSave->iGlobalBKGDred; + pData->iGlobalBKGDgreen = pSave->iGlobalBKGDgreen; + pData->iGlobalBKGDblue = pSave->iGlobalBKGDblue; +#endif + } + else /* no saved-data; so reset the lot */ +#endif /* SKIPCHUNK_SAVE */ + { +#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) + pData->bHasglobalPLTE = MNG_FALSE; + pData->bHasglobalTRNS = MNG_FALSE; + pData->bHasglobalGAMA = MNG_FALSE; + pData->bHasglobalCHRM = MNG_FALSE; + pData->bHasglobalSRGB = MNG_FALSE; + pData->bHasglobalICCP = MNG_FALSE; + pData->bHasglobalBKGD = MNG_FALSE; +#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */ + +#ifndef MNG_SKIPCHUNK_TERM + if (!pData->bMisplacedTERM) /* backward compatible ugliness !!! */ + { + pData->iBACKred = 0; + pData->iBACKgreen = 0; + pData->iBACKblue = 0; + pData->iBACKmandatory = 0; + pData->iBACKimageid = 0; + pData->iBACKtile = 0; + } +#endif + +#ifndef MNG_SKIPCHUNK_FRAM + pData->iFRAMmode = 1; +/* pData->iFRAMdelay = 1; */ + pData->iFRAMtimeout = 0x7fffffffl; + pData->bFRAMclipping = MNG_FALSE; + pData->iFRAMclipl = 0; + pData->iFRAMclipr = 0; + pData->iFRAMclipt = 0; + pData->iFRAMclipb = 0; + /* NOOOOOOOOOOOO */ +/* pData->iFramemode = 1; + pData->iFramedelay = 1; + pData->iFrametimeout = 0x7fffffffl; + pData->bFrameclipping = MNG_FALSE; + pData->iFrameclipl = 0; + pData->iFrameclipr = 0; + pData->iFrameclipt = 0; + pData->iFrameclipb = 0; */ + +/* pData->iNextdelay = 1; */ + pData->iNextdelay = pData->iFramedelay; +#endif + + pData->iGlobalPLTEcount = 0; + + pData->iGlobalTRNSrawlen = 0; + + pData->iGlobalGamma = 0; + +#ifndef MNG_SKIPCHUNK_cHRM + pData->iGlobalWhitepointx = 0; + pData->iGlobalWhitepointy = 0; + pData->iGlobalPrimaryredx = 0; + pData->iGlobalPrimaryredy = 0; + pData->iGlobalPrimarygreenx = 0; + pData->iGlobalPrimarygreeny = 0; + pData->iGlobalPrimarybluex = 0; + pData->iGlobalPrimarybluey = 0; +#endif + + pData->iGlobalRendintent = 0; + +#ifndef MNG_SKIPCHUNK_iCCP + if (pData->iGlobalProfilesize) /* free a previous profile ? */ + MNG_FREE (pData, pData->pGlobalProfile, pData->iGlobalProfilesize); + + pData->iGlobalProfilesize = 0; +#endif + +#ifndef MNG_SKIPCHUNK_bKGD + pData->iGlobalBKGDred = 0; + pData->iGlobalBKGDgreen = 0; + pData->iGlobalBKGDblue = 0; +#endif + } + +#ifndef MNG_SKIPCHUNK_TERM + if (!pData->bMisplacedTERM) /* backward compatible ugliness !!! */ + { + pImage = (mng_imagep)pData->pFirstimgobj; + /* drop un-frozen image objects */ + while (pImage) + { + mng_imagep pNext = (mng_imagep)pImage->sHeader.pNext; + + if (!pImage->bFrozen) /* is it un-frozen ? */ + { + mng_imagep pPrev = (mng_imagep)pImage->sHeader.pPrev; + + if (pPrev) /* unlink it */ + pPrev->sHeader.pNext = pNext; + else + pData->pFirstimgobj = pNext; + + if (pNext) + pNext->sHeader.pPrev = pPrev; + else + pData->pLastimgobj = pPrev; + + if (pImage->pImgbuf->bFrozen) /* buffer frozen ? */ + { + if (pImage->pImgbuf->iRefcount < 2) + MNG_ERROR (pData, MNG_INTERNALERROR); + /* decrease ref counter */ + pImage->pImgbuf->iRefcount--; + /* just cleanup the object then */ + MNG_FREEX (pData, pImage, sizeof (mng_image)); + } + else + { /* free the image buffer */ + iRetcode = mng_free_imagedataobject (pData, pImage->pImgbuf); + /* and cleanup the object */ + MNG_FREEX (pData, pImage, sizeof (mng_image)); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } + + pImage = pNext; /* neeeext */ + } + } +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_RESTORE_STATE, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ +/* * * */ +/* * General display processing routine * */ +/* * * */ +/* ************************************************************************** */ + +mng_retcode mng_process_display (mng_datap pData) +{ + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY, MNG_LC_START); +#endif + + if (!pData->iBreakpoint) /* not broken previously ? */ + { + if ((pData->iRequestframe) || (pData->iRequestlayer) || (pData->iRequesttime)) + { + pData->bSearching = MNG_TRUE; /* indicate we're searching */ + + iRetcode = clear_canvas (pData); /* make the canvas virgin black ?!? */ + + if (iRetcode) /* on error bail out */ + return iRetcode; + /* let's start from the top, shall we */ + pData->pCurraniobj = pData->pFirstaniobj; + } + } + + do /* process the objects */ + { + if (pData->bSearching) /* clear timer-flag when searching !!! */ + pData->bTimerset = MNG_FALSE; + /* do we need to finish something first ? */ + if ((pData->iBreakpoint) && (pData->iBreakpoint < 99)) + { + switch (pData->iBreakpoint) /* return to broken display routine */ + { +#ifndef MNG_SKIPCHUNK_FRAM + case 1 : { iRetcode = mng_process_display_fram2 (pData); break; } +#endif +#ifndef MNG_SKIPCHUNK_SHOW + case 3 : ; /* same as 4 !!! */ + case 4 : { iRetcode = mng_process_display_show (pData); break; } +#endif +#ifndef MNG_SKIPCHUNK_CLON + case 5 : { iRetcode = mng_process_display_clon2 (pData); break; } +#endif +#ifndef MNG_SKIPCHUNK_MAGN + case 9 : { iRetcode = mng_process_display_magn2 (pData); break; } + case 10 : { iRetcode = mng_process_display_mend2 (pData); break; } +#endif +#ifndef MNG_SKIPCHUNK_PAST + case 11 : { iRetcode = mng_process_display_past2 (pData); break; } +#endif + default : MNG_ERROR (pData, MNG_INTERNALERROR); + } + } + else + { + if (pData->pCurraniobj) + iRetcode = ((mng_object_headerp)pData->pCurraniobj)->fProcess (pData, pData->pCurraniobj); + } + + if (!pData->bTimerset) /* reset breakpoint flag ? */ + pData->iBreakpoint = 0; + /* can we advance to next object ? */ + if ((!iRetcode) && (pData->pCurraniobj) && + (!pData->bTimerset) && (!pData->bSectionwait)) + { + pData->pCurraniobj = ((mng_object_headerp)pData->pCurraniobj)->pNext; + /* MEND processing to be done ? */ + if ((pData->eImagetype == mng_it_mng) && (!pData->pCurraniobj)) + iRetcode = mng_process_display_mend (pData); + + if (!pData->pCurraniobj) /* refresh after last image ? */ + pData->bNeedrefresh = MNG_TRUE; + } + + if (pData->bSearching) /* are we looking for something ? */ + { + if ((pData->iRequestframe) && (pData->iRequestframe <= pData->iFrameseq)) + { + pData->iRequestframe = 0; /* found the frame ! */ + pData->bSearching = MNG_FALSE; + } + else + if ((pData->iRequestlayer) && (pData->iRequestlayer <= pData->iLayerseq)) + { + pData->iRequestlayer = 0; /* found the layer ! */ + pData->bSearching = MNG_FALSE; + } + else + if ((pData->iRequesttime) && (pData->iRequesttime <= pData->iFrametime)) + { + pData->iRequesttime = 0; /* found the playtime ! */ + pData->bSearching = MNG_FALSE; + } + } + } /* until error or a break or no more objects */ + while ((!iRetcode) && (pData->pCurraniobj) && + (((pData->bRunning) && (!pData->bTimerset)) || (pData->bSearching)) && + (!pData->bSectionwait) && (!pData->bFreezing)); + + if (iRetcode) /* on error bail out */ + return iRetcode; + /* refresh needed ? */ + if ((!pData->bTimerset) && (pData->bNeedrefresh)) + { + iRetcode = mng_display_progressive_refresh (pData, 1); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + /* timer break ? */ + if ((pData->bTimerset) && (!pData->iBreakpoint)) + pData->iBreakpoint = 99; + else + if (!pData->bTimerset) + pData->iBreakpoint = 0; /* reset if no timer break */ + + if ((!pData->bTimerset) && (!pData->pCurraniobj)) + pData->bRunning = MNG_FALSE; /* all done now ! */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ +/* * * */ +/* * Chunk display processing routines * */ +/* * * */ +/* ************************************************************************** */ + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT +png_imgtype mng_png_imgtype(mng_uint8 colortype, mng_uint8 bitdepth) +{ + png_imgtype ret; + switch (bitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1: + { + png_imgtype imgtype[]={png_g1,png_none,png_none,png_idx1}; + ret=imgtype[colortype]; + break; + } + case 2: + { + png_imgtype imgtype[]={png_g2,png_none,png_none,png_idx2}; + ret=imgtype[colortype]; + break; + } + case 4: + { + png_imgtype imgtype[]={png_g4,png_none,png_none,png_idx4}; + ret=imgtype[colortype]; + break; + } +#endif + case 8: + { + png_imgtype imgtype[]={png_g8,png_none,png_rgb8,png_idx8,png_ga8, + png_none,png_rgba8}; + ret=imgtype[colortype]; + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16: + { + png_imgtype imgtype[]={png_g16,png_none,png_rgb16,png_none,png_ga16, + png_none,png_rgba16}; + ret=imgtype[colortype]; + break; + } +#endif + default: + ret=png_none; + break; + } + return (ret); +} +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + +/* ************************************************************************** */ + +mng_retcode mng_process_display_ihdr (mng_datap pData) +{ /* address the current "object" if any */ + mng_imagep pImage = (mng_imagep)pData->pCurrentobj; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IHDR, MNG_LC_START); +#endif + + if (!pData->bHasDHDR) + { + pData->fInitrowproc = MNG_NULL; /* do nothing by default */ + pData->fDisplayrow = MNG_NULL; + pData->fCorrectrow = MNG_NULL; + pData->fStorerow = MNG_NULL; + pData->fProcessrow = MNG_NULL; + pData->fDifferrow = MNG_NULL; + pData->pStoreobj = MNG_NULL; + } + + if (!pData->iBreakpoint) /* not previously broken ? */ + { + mng_retcode iRetcode = MNG_NOERROR; + +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* is a delta-image ? */ + { + if (pData->iDeltatype == MNG_DELTATYPE_REPLACE) + iRetcode = mng_reset_object_details (pData, (mng_imagep)pData->pDeltaImage, + pData->iDatawidth, pData->iDataheight, + pData->iBitdepth, pData->iColortype, + pData->iCompression, pData->iFilter, + pData->iInterlace, MNG_TRUE); + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iBitdepth; + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iBitdepth; + } + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) ) + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iBitdepth; + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) ) + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iBitdepth; + + if (!iRetcode) + { /* process immediately if bitdepth & colortype are equal */ + pData->bDeltaimmediate = + (mng_bool)((pData->iBitdepth == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iBitdepth ) && + (pData->iColortype == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iColortype) ); + /* be sure to reset object 0 */ + iRetcode = mng_reset_object_details (pData, (mng_imagep)pData->pObjzero, + pData->iDatawidth, pData->iDataheight, + pData->iBitdepth, pData->iColortype, + pData->iCompression, pData->iFilter, + pData->iInterlace, MNG_TRUE); + } + } + else +#endif + { + if (pImage) /* update object buffer ? */ + iRetcode = mng_reset_object_details (pData, pImage, + pData->iDatawidth, pData->iDataheight, + pData->iBitdepth, pData->iColortype, + pData->iCompression, pData->iFilter, + pData->iInterlace, MNG_TRUE); + else + iRetcode = mng_reset_object_details (pData, (mng_imagep)pData->pObjzero, + pData->iDatawidth, pData->iDataheight, + pData->iBitdepth, pData->iColortype, + pData->iCompression, pData->iFilter, + pData->iInterlace, MNG_TRUE); + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + +#ifndef MNG_NO_DELTA_PNG + if (!pData->bHasDHDR) +#endif + { + if (pImage) /* real object ? */ + pData->pStoreobj = pImage; /* tell the row routines */ + else /* otherwise use object 0 */ + pData->pStoreobj = pData->pObjzero; + +#if !defined(MNG_INCLUDE_MPNG_PROPOSAL) && !defined(MNG_INCLUDE_ANG_PROPOSAL) + if ( /* display "on-the-fly" ? */ +#ifndef MNG_SKIPCHUNK_MAGN + (((mng_imagep)pData->pStoreobj)->iMAGN_MethodX == 0) && + (((mng_imagep)pData->pStoreobj)->iMAGN_MethodY == 0) && +#endif + ( (pData->eImagetype == mng_it_png ) || + (((mng_imagep)pData->pStoreobj)->bVisible) ) ) + { + next_layer (pData); /* that's a new layer then ! */ + + if (pData->bTimerset) /* timer break ? */ + pData->iBreakpoint = 2; + else + { + pData->iBreakpoint = 0; + /* anything to display ? */ + if ((pData->iDestr > pData->iDestl) && (pData->iDestb > pData->iDestt)) + set_display_routine (pData); /* then determine display routine */ + } + } +#endif + } + + if (!pData->bTimerset) /* no timer break ? */ + { +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->fInitrowproc = (mng_fptr)mng_init_rowproc; + pData->ePng_imgtype=mng_png_imgtype(pData->iColortype,pData->iBitdepth); +#else + switch (pData->iColortype) /* determine row initialization routine */ + { + case 0 : { /* gray */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g4_i; + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g16_i; + + break; + } +#endif + } + + break; + } + case 2 : { /* rgb */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_i; + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_i; + + break; + } +#endif + } + + break; + } + case 3 : { /* indexed */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx4_i; + + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx8_i; + + break; + } + } + + break; + } + case 4 : { /* gray+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga16_i; + break; + } +#endif + } + + break; + } + case 6 : { /* rgb+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_i; + + break; + } +#endif + } + + break; + } + } +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + + pData->iFilterofs = 0; /* determine filter characteristics */ + pData->iLevel0 = 0; /* default levels */ + pData->iLevel1 = 0; + pData->iLevel2 = 0; + pData->iLevel3 = 0; + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iFilter == MNG_FILTER_DIFFERING) + { + switch (pData->iColortype) + { + case 0 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 1; + else + pData->iFilterofs = 2; + + break; + } + case 2 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 3; + else + pData->iFilterofs = 6; + + break; + } + case 3 : { + pData->iFilterofs = 1; + break; + } + case 4 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 2; + else + pData->iFilterofs = 4; + + break; + } + case 6 : { + if (pData->iBitdepth <= 8) + pData->iFilterofs = 4; + else + pData->iFilterofs = 8; + + break; + } + } + } +#endif + +#ifdef FILTER193 /* no adaptive filtering ? */ + if (pData->iFilter == MNG_FILTER_NOFILTER) + pData->iPixelofs = pData->iFilterofs; + else +#endif + pData->iPixelofs = pData->iFilterofs + 1; + + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IHDR, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_MPNG_PROPOSAL +mng_retcode mng_process_display_mpng (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MPNG, MNG_LC_START); +#endif + + pData->iAlphadepth = 8; /* assume transparency !! */ + + if (pData->fProcessheader) /* inform the app (creating the output canvas) ? */ + { + pData->iWidth = ((mng_mpng_objp)pData->pMPNG)->iFramewidth; + pData->iHeight = ((mng_mpng_objp)pData->pMPNG)->iFrameheight; + + if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) + MNG_ERROR (pData, MNG_APPMISCERROR); + } + + next_layer (pData); /* first mPNG layer then ! */ + pData->bTimerset = MNG_FALSE; + pData->iBreakpoint = 0; + + if ((pData->iDestr > pData->iDestl) && (pData->iDestb > pData->iDestt)) + set_display_routine (pData); /* then determine display routine */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MPNG, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_ANG_PROPOSAL +mng_retcode mng_process_display_ang (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_ANG, MNG_LC_START); +#endif + + if (pData->fProcessheader) /* inform the app (creating the output canvas) ? */ + { + if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) + MNG_ERROR (pData, MNG_APPMISCERROR); + } + + next_layer (pData); /* first mPNG layer then ! */ + pData->bTimerset = MNG_FALSE; + pData->iBreakpoint = 0; + + if ((pData->iDestr > pData->iDestl) && (pData->iDestb > pData->iDestt)) + set_display_routine (pData); /* then determine display routine */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_ANG, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_idat (mng_datap pData, + mng_uint32 iRawlen, + mng_uint8p pRawdata) +#else +mng_retcode mng_process_display_idat (mng_datap pData) +#endif +{ + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IDAT, MNG_LC_START); +#endif + +#if defined(MNG_INCLUDE_MPNG_PROPOSAL) || defined(MNG_INCLUDE_ANG_PROPOSAL) + if ((pData->eImagetype == mng_it_png) && (pData->iLayerseq <= 0)) + { + if (pData->fProcessheader) /* inform the app (creating the output canvas) ? */ + if (!pData->fProcessheader (((mng_handle)pData), pData->iWidth, pData->iHeight)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + next_layer (pData); /* first regular PNG layer then ! */ + pData->bTimerset = MNG_FALSE; + pData->iBreakpoint = 0; + + if ((pData->iDestr > pData->iDestl) && (pData->iDestb > pData->iDestt)) + set_display_routine (pData); /* then determine display routine */ + } +#endif + + if (pData->bRestorebkgd) /* need to restore the background ? */ + { + pData->bRestorebkgd = MNG_FALSE; + iRetcode = load_bkgdlayer (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + pData->iLayerseq++; /* and it counts as a layer then ! */ + } + + if (pData->fInitrowproc) /* need to initialize row processing? */ + { + iRetcode = ((mng_initrowproc)pData->fInitrowproc) (pData); + pData->fInitrowproc = MNG_NULL; /* only call this once !!! */ + } + + if ((!iRetcode) && (!pData->bInflating)) + /* initialize inflate */ + iRetcode = mngzlib_inflateinit (pData); + + if (!iRetcode) /* all ok? then inflate, my man */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + iRetcode = mngzlib_inflaterows (pData, iRawlen, pRawdata); +#else + iRetcode = mngzlib_inflaterows (pData, pData->iRawlen, pData->pRawdata); +#endif + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IDAT, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_display_iend (mng_datap pData) +{ + mng_retcode iRetcode, iRetcode2; + mng_bool bDodisplay = MNG_FALSE; + mng_bool bMagnify = MNG_FALSE; + mng_bool bCleanup = (mng_bool)(pData->iBreakpoint != 0); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IEND, MNG_LC_START); +#endif + +#ifdef MNG_INCLUDE_JNG /* progressive+alpha JNG can be displayed now */ + if ( (pData->bHasJHDR ) && + ( (pData->bJPEGprogressive) || (pData->bJPEGprogressive2)) && + ( (pData->eImagetype == mng_it_jng ) || + (((mng_imagep)pData->pStoreobj)->bVisible) ) && + ( (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) ) + bDodisplay = MNG_TRUE; +#endif + +#ifndef MNG_SKIPCHUNK_MAGN + if ( (pData->pStoreobj) && /* on-the-fly magnification ? */ + ( (((mng_imagep)pData->pStoreobj)->iMAGN_MethodX) || + (((mng_imagep)pData->pStoreobj)->iMAGN_MethodY) ) ) + bMagnify = MNG_TRUE; +#endif + + if ((pData->bHasBASI) || /* was it a BASI stream */ + (bDodisplay) || /* or should we display the JNG */ +#ifndef MNG_SKIPCHUNK_MAGN + (bMagnify) || /* or should we magnify it */ +#endif + /* or did we get broken here last time ? */ + ((pData->iBreakpoint) && (pData->iBreakpoint != 8))) + { + mng_imagep pImage = (mng_imagep)pData->pCurrentobj; + + if (!pImage) /* or was it object 0 ? */ + pImage = (mng_imagep)pData->pObjzero; + /* display it now then ? */ + if ((pImage->bVisible) && (pImage->bViewable)) + { /* ok, so do it */ + iRetcode = mng_display_image (pData, pImage, bDodisplay); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (pData->bTimerset) /* timer break ? */ + pData->iBreakpoint = 6; + } + } +#ifndef MNG_NO_DELTA_PNG + else + if ((pData->bHasDHDR) || /* was it a DHDR stream */ + (pData->iBreakpoint == 8)) /* or did we get broken here last time ? */ + { + mng_imagep pImage = (mng_imagep)pData->pDeltaImage; + + if (!pData->iBreakpoint) + { /* perform the delta operations needed */ + iRetcode = mng_execute_delta_image (pData, pImage, (mng_imagep)pData->pObjzero); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + /* display it now then ? */ + if ((pImage->bVisible) && (pImage->bViewable)) + { /* ok, so do it */ + iRetcode = mng_display_image (pData, pImage, MNG_FALSE); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (pData->bTimerset) /* timer break ? */ + pData->iBreakpoint = 8; + } + } +#endif + + if (!pData->bTimerset) /* can we continue ? */ + { + pData->iBreakpoint = 0; /* clear this flag now ! */ + + +#ifdef MNG_INCLUDE_MPNG_PROPOSAL + if (pData->eImagetype == mng_it_mpng) + { + pData->pCurraniobj = pData->pFirstaniobj; + } else +#endif +#ifdef MNG_INCLUDE_ANG_PROPOSAL + if (pData->eImagetype == mng_it_ang) + { + pData->pCurraniobj = pData->pFirstaniobj; + } else +#endif + { /* cleanup object 0 */ + mng_reset_object_details (pData, (mng_imagep)pData->pObjzero, + 0, 0, 0, 0, 0, 0, 0, MNG_TRUE); + } + + if (pData->bInflating) /* if we've been inflating */ + { /* cleanup row-processing, */ + iRetcode = mng_cleanup_rowproc (pData); + /* also cleanup inflate! */ + iRetcode2 = mngzlib_inflatefree (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + if (iRetcode2) + return iRetcode2; + } + +#ifdef MNG_INCLUDE_JNG + if (pData->bJPEGdecompress) /* if we've been decompressing JDAT */ + { /* cleanup row-processing, */ + iRetcode = mng_cleanup_rowproc (pData); + /* also cleanup decompress! */ + iRetcode2 = mngjpeg_decompressfree (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + if (iRetcode2) + return iRetcode2; + } + + if (pData->bJPEGdecompress2) /* if we've been decompressing JDAA */ + { /* cleanup row-processing, */ + iRetcode = mng_cleanup_rowproc (pData); + /* also cleanup decompress! */ + iRetcode2 = mngjpeg_decompressfree2 (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + if (iRetcode2) + return iRetcode2; + } +#endif + + if (bCleanup) /* if we got broken last time we need to cleanup */ + { + pData->bHasIHDR = MNG_FALSE; /* IEND signals the end for most ... */ + pData->bHasBASI = MNG_FALSE; + pData->bHasDHDR = MNG_FALSE; +#ifdef MNG_INCLUDE_JNG + pData->bHasJHDR = MNG_FALSE; + pData->bHasJSEP = MNG_FALSE; + pData->bHasJDAA = MNG_FALSE; + pData->bHasJDAT = MNG_FALSE; +#endif + pData->bHasPLTE = MNG_FALSE; + pData->bHasTRNS = MNG_FALSE; + pData->bHasGAMA = MNG_FALSE; + pData->bHasCHRM = MNG_FALSE; + pData->bHasSRGB = MNG_FALSE; + pData->bHasICCP = MNG_FALSE; + pData->bHasBKGD = MNG_FALSE; + pData->bHasIDAT = MNG_FALSE; + } + /* if the image was displayed on the fly, */ + /* we'll have to make the app refresh */ + if ((pData->eImagetype != mng_it_mng) && (pData->fDisplayrow)) + pData->bNeedrefresh = MNG_TRUE; + + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IEND, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +/* change in the MNG spec with regards to TERM delay & interframe_delay + as proposed by Adam M. Costello (option 4) and finalized by official vote + during december 2002 / check the 'mng-list' archives for more details */ + +mng_retcode mng_process_display_mend (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MEND, MNG_LC_START); +#endif + + pData->bForcedelay = pData->iAccumdelay ? MNG_FALSE : MNG_TRUE; + pData->iAccumdelay = 0; + +#ifdef MNG_SUPPORT_DYNAMICMNG + if (pData->bStopafterseek) /* need to stop after this ? */ + { + pData->bFreezing = MNG_TRUE; /* stop processing on this one */ + pData->bRunningevent = MNG_FALSE; + pData->bStopafterseek = MNG_FALSE; + pData->bNeedrefresh = MNG_TRUE; /* make sure the last bit is displayed ! */ + } +#endif + +#ifndef MNG_SKIPCHUNK_TERM + /* TERM processed ? */ + if ((pData->bDisplaying) && (pData->bRunning) && + (pData->bHasTERM) && (pData->pTermaniobj)) + { + mng_retcode iRetcode; + mng_ani_termp pTERM; + /* get the right animation object ! */ + pTERM = (mng_ani_termp)pData->pTermaniobj; + + pData->iIterations++; /* increase iteration count */ + + switch (pTERM->iTermaction) /* determine what to do! */ + { + case 0 : { /* show last frame indefinitly */ + break; /* piece of cake, that is... */ + } + + case 1 : { /* cease displaying anything */ + /* max(1, TERM delay, interframe_delay) */ +#ifndef MNG_SKIPCHUNK_FRAM + if (pTERM->iDelay > pData->iFramedelay) + pData->iFramedelay = pTERM->iDelay; + if (!pData->iFramedelay) + pData->iFramedelay = 1; +#endif + + iRetcode = interframe_delay (pData); + /* no interframe_delay? then fake it */ + if ((!iRetcode) && (!pData->bTimerset)) + iRetcode = set_delay (pData, 1); + + if (iRetcode) + return iRetcode; + + pData->iBreakpoint = 10; + break; + } + + case 2 : { /* show first image after TERM */ + iRetcode = restore_state (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + /* notify the app ? */ + if (pData->fProcessmend) + if (!pData->fProcessmend ((mng_handle)pData, pData->iIterations, 0)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + /* show first frame after TERM chunk */ + pData->pCurraniobj = pTERM; + pData->bOnlyfirstframe = MNG_TRUE; + pData->iFramesafterTERM = 0; + + /* max(1, TERM delay, interframe_delay) */ +#ifndef MNG_SKIPCHUNK_FRAM + if (pTERM->iDelay > pData->iFramedelay) + pData->iFramedelay = pTERM->iDelay; + if (!pData->iFramedelay) + pData->iFramedelay = 1; +#endif + + break; + } + + case 3 : { /* repeat */ + if ((pTERM->iItermax) && (pTERM->iItermax < 0x7FFFFFFF)) + pTERM->iItermax--; + + if (pTERM->iItermax) /* go back to TERM ? */ + { /* restore to initial or SAVE state */ + iRetcode = restore_state (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + /* notify the app ? */ + if (pData->fProcessmend) + if (!pData->fProcessmend ((mng_handle)pData, + pData->iIterations, pTERM->iItermax)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + /* restart from TERM chunk */ + pData->pCurraniobj = pTERM; + + if (pTERM->iDelay) /* set the delay (?) */ + { + /* max(1, TERM delay, interframe_delay) */ +#ifndef MNG_SKIPCHUNK_FRAM + if (pTERM->iDelay > pData->iFramedelay) + pData->iFramedelay = pTERM->iDelay; + if (!pData->iFramedelay) + pData->iFramedelay = 1; +#endif + + pData->bNeedrefresh = MNG_TRUE; + } + } + else + { + switch (pTERM->iIteraction) + { + case 0 : { /* show last frame indefinitly */ + break; /* piece of cake, that is... */ + } + + case 1 : { /* cease displaying anything */ + /* max(1, TERM delay, interframe_delay) */ +#ifndef MNG_SKIPCHUNK_FRAM + if (pTERM->iDelay > pData->iFramedelay) + pData->iFramedelay = pTERM->iDelay; + if (!pData->iFramedelay) + pData->iFramedelay = 1; +#endif + + iRetcode = interframe_delay (pData); + /* no interframe_delay? then fake it */ + if ((!iRetcode) && (!pData->bTimerset)) + iRetcode = set_delay (pData, 1); + + if (iRetcode) + return iRetcode; + + pData->iBreakpoint = 10; + break; + } + + case 2 : { /* show first image after TERM */ + iRetcode = restore_state (pData); + /* on error bail out */ + if (iRetcode) + return iRetcode; + /* notify the app ? */ + if (pData->fProcessmend) + if (!pData->fProcessmend ((mng_handle)pData, + pData->iIterations, 0)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + /* show first frame after TERM chunk */ + pData->pCurraniobj = pTERM; + pData->bOnlyfirstframe = MNG_TRUE; + pData->iFramesafterTERM = 0; + /* max(1, TERM delay, interframe_delay) */ +#ifndef MNG_SKIPCHUNK_FRAM + if (pTERM->iDelay > pData->iFramedelay) + pData->iFramedelay = pTERM->iDelay; + if (!pData->iFramedelay) + pData->iFramedelay = 1; +#endif + + break; + } + } + } + + break; + } + } + } +#endif /* MNG_SKIPCHUNK_TERM */ + /* just reading ? */ + if ((!pData->bDisplaying) && (pData->bReading)) + if (pData->fProcessmend) /* inform the app ? */ + if (!pData->fProcessmend ((mng_handle)pData, 0, 0)) + MNG_ERROR (pData, MNG_APPMISCERROR); + + if (!pData->pCurraniobj) /* always let the app refresh at the end ! */ + pData->bNeedrefresh = MNG_TRUE; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MEND, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_display_mend2 (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MEND, MNG_LC_START); +#endif + +#ifndef MNG_SKIPCHUNK_FRAM + pData->bFrameclipping = MNG_FALSE; /* nothing to do but restore the app background */ +#endif + load_bkgdlayer (pData); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MEND, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_DEFI +mng_retcode mng_process_display_defi (mng_datap pData) +{ + mng_imagep pImage; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DEFI, MNG_LC_START); +#endif + + if (!pData->iDEFIobjectid) /* object id=0 ? */ + { + pImage = (mng_imagep)pData->pObjzero; + + if (pData->bDEFIhasdonotshow) + pImage->bVisible = (mng_bool)(pData->iDEFIdonotshow == 0); + + if (pData->bDEFIhasloca) + { + pImage->iPosx = pData->iDEFIlocax; + pImage->iPosy = pData->iDEFIlocay; + } + + if (pData->bDEFIhasclip) + { + pImage->bClipped = pData->bDEFIhasclip; + pImage->iClipl = pData->iDEFIclipl; + pImage->iClipr = pData->iDEFIclipr; + pImage->iClipt = pData->iDEFIclipt; + pImage->iClipb = pData->iDEFIclipb; + } + + pData->pCurrentobj = 0; /* not a real object ! */ + } + else + { /* already exists ? */ + pImage = (mng_imagep)mng_find_imageobject (pData, pData->iDEFIobjectid); + + if (!pImage) /* if not; create new */ + { + mng_retcode iRetcode = mng_create_imageobject (pData, pData->iDEFIobjectid, + (mng_bool)(pData->iDEFIconcrete == 1), + (mng_bool)(pData->iDEFIdonotshow == 0), + MNG_FALSE, 0, 0, 0, 0, 0, 0, 0, + pData->iDEFIlocax, pData->iDEFIlocay, + pData->bDEFIhasclip, + pData->iDEFIclipl, pData->iDEFIclipr, + pData->iDEFIclipt, pData->iDEFIclipb, + &pImage); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + else + { /* exists; then set new info */ + if (pData->bDEFIhasdonotshow) + pImage->bVisible = (mng_bool)(pData->iDEFIdonotshow == 0); + + pImage->bViewable = MNG_FALSE; + + if (pData->bDEFIhasloca) + { + pImage->iPosx = pData->iDEFIlocax; + pImage->iPosy = pData->iDEFIlocay; + } + + if (pData->bDEFIhasclip) + { + pImage->bClipped = pData->bDEFIhasclip; + pImage->iClipl = pData->iDEFIclipl; + pImage->iClipr = pData->iDEFIclipr; + pImage->iClipt = pData->iDEFIclipt; + pImage->iClipb = pData->iDEFIclipb; + } + + if (pData->bDEFIhasconcrete) + pImage->pImgbuf->bConcrete = (mng_bool)(pData->iDEFIconcrete == 1); + } + + pData->pCurrentobj = pImage; /* others may want to know this */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DEFI, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_BASI +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_basi (mng_datap pData, + mng_uint16 iRed, + mng_uint16 iGreen, + mng_uint16 iBlue, + mng_bool bHasalpha, + mng_uint16 iAlpha, + mng_uint8 iViewable) +#else +mng_retcode mng_process_display_basi (mng_datap pData) +#endif +{ /* address the current "object" if any */ + mng_imagep pImage = (mng_imagep)pData->pCurrentobj; + mng_uint8p pWork; + mng_uint32 iX; + mng_imagedatap pBuf; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_BASI, MNG_LC_START); +#endif + + if (!pImage) /* or is it an "on-the-fly" image ? */ + pImage = (mng_imagep)pData->pObjzero; + /* address the object-buffer */ + pBuf = pImage->pImgbuf; + + pData->fDisplayrow = MNG_NULL; /* do nothing by default */ + pData->fCorrectrow = MNG_NULL; + pData->fStorerow = MNG_NULL; + pData->fProcessrow = MNG_NULL; + /* set parms now that they're known */ + iRetcode = mng_reset_object_details (pData, pImage, pData->iDatawidth, + pData->iDataheight, pData->iBitdepth, + pData->iColortype, pData->iCompression, + pData->iFilter, pData->iInterlace, MNG_FALSE); + if (iRetcode) /* on error bail out */ + return iRetcode; + /* save the viewable flag */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage->bViewable = (mng_bool)(iViewable == 1); +#else + pImage->bViewable = (mng_bool)(pData->iBASIviewable == 1); +#endif + pBuf->bViewable = pImage->bViewable; + pData->pStoreobj = pImage; /* let row-routines know which object */ + + pWork = pBuf->pImgdata; /* fill the object-buffer with the specified + "color" sample */ + switch (pData->iColortype) /* depending on color_type & bit_depth */ + { + case 0 : { /* gray */ +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth == 16) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + mng_put_uint16 (pWork, iRed); +#else + mng_put_uint16 (pWork, pData->iBASIred); +#endif + pWork += 2; + } + } + else +#endif + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + *pWork = (mng_uint8)iRed; +#else + *pWork = (mng_uint8)pData->iBASIred; +#endif + pWork++; + } + } + /* force tRNS ? */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if ((bHasalpha) && (!iAlpha)) +#else + if ((pData->bBASIhasalpha) && (!pData->iBASIalpha)) +#endif + { + pBuf->bHasTRNS = MNG_TRUE; +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pBuf->iTRNSgray = iRed; +#else + pBuf->iTRNSgray = pData->iBASIred; +#endif + } + + break; + } + + case 2 : { /* rgb */ +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth == 16) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + mng_put_uint16 (pWork, iRed ); + mng_put_uint16 (pWork+2, iGreen); + mng_put_uint16 (pWork+4, iBlue ); +#else + mng_put_uint16 (pWork, pData->iBASIred ); + mng_put_uint16 (pWork+2, pData->iBASIgreen); + mng_put_uint16 (pWork+4, pData->iBASIblue ); +#endif + pWork += 6; + } + } + else +#endif + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + *pWork = (mng_uint8)iRed; + *(pWork+1) = (mng_uint8)iGreen; + *(pWork+2) = (mng_uint8)iBlue; +#else + *pWork = (mng_uint8)pData->iBASIred; + *(pWork+1) = (mng_uint8)pData->iBASIgreen; + *(pWork+2) = (mng_uint8)pData->iBASIblue; +#endif + pWork += 3; + } + } + /* force tRNS ? */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if ((bHasalpha) && (!iAlpha)) +#else + if ((pData->bBASIhasalpha) && (!pData->iBASIalpha)) +#endif + { + pBuf->bHasTRNS = MNG_TRUE; +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pBuf->iTRNSred = iRed; + pBuf->iTRNSgreen = iGreen; + pBuf->iTRNSblue = iBlue; +#else + pBuf->iTRNSred = pData->iBASIred; + pBuf->iTRNSgreen = pData->iBASIgreen; + pBuf->iTRNSblue = pData->iBASIblue; +#endif + } + + break; + } + + case 3 : { /* indexed */ + pBuf->bHasPLTE = MNG_TRUE; + + switch (pData->iBitdepth) + { + case 1 : { pBuf->iPLTEcount = 2; break; } + case 2 : { pBuf->iPLTEcount = 4; break; } + case 4 : { pBuf->iPLTEcount = 16; break; } + case 8 : { pBuf->iPLTEcount = 256; break; } + default : { pBuf->iPLTEcount = 1; break; } + } + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pBuf->aPLTEentries [0].iRed = (mng_uint8)iRed; + pBuf->aPLTEentries [0].iGreen = (mng_uint8)iGreen; + pBuf->aPLTEentries [0].iBlue = (mng_uint8)iBlue; +#else + pBuf->aPLTEentries [0].iRed = (mng_uint8)pData->iBASIred; + pBuf->aPLTEentries [0].iGreen = (mng_uint8)pData->iBASIgreen; + pBuf->aPLTEentries [0].iBlue = (mng_uint8)pData->iBASIblue; +#endif + + for (iX = 1; iX < pBuf->iPLTEcount; iX++) + { + pBuf->aPLTEentries [iX].iRed = 0; + pBuf->aPLTEentries [iX].iGreen = 0; + pBuf->aPLTEentries [iX].iBlue = 0; + } + /* force tRNS ? */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if ((bHasalpha) && (iAlpha < 255)) +#else + if ((pData->bBASIhasalpha) && (pData->iBASIalpha < 255)) +#endif + { + pBuf->bHasTRNS = MNG_TRUE; + pBuf->iTRNScount = 1; +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pBuf->aTRNSentries [0] = (mng_uint8)iAlpha; +#else + pBuf->aTRNSentries [0] = (mng_uint8)pData->iBASIalpha; +#endif + } + + break; + } + + case 4 : { /* gray+alpha */ +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth == 16) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + mng_put_uint16 (pWork, iRed); + mng_put_uint16 (pWork+2, iAlpha); +#else + mng_put_uint16 (pWork, pData->iBASIred); + mng_put_uint16 (pWork+2, pData->iBASIalpha); +#endif + pWork += 4; + } + } + else +#endif + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + *pWork = (mng_uint8)iRed; + *(pWork+1) = (mng_uint8)iAlpha; +#else + *pWork = (mng_uint8)pData->iBASIred; + *(pWork+1) = (mng_uint8)pData->iBASIalpha; +#endif + pWork += 2; + } + } + + break; + } + + case 6 : { /* rgb+alpha */ +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth == 16) + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + mng_put_uint16 (pWork, iRed); + mng_put_uint16 (pWork+2, iGreen); + mng_put_uint16 (pWork+4, iBlue); + mng_put_uint16 (pWork+6, iAlpha); +#else + mng_put_uint16 (pWork, pData->iBASIred); + mng_put_uint16 (pWork+2, pData->iBASIgreen); + mng_put_uint16 (pWork+4, pData->iBASIblue); + mng_put_uint16 (pWork+6, pData->iBASIalpha); +#endif + pWork += 8; + } + } + else +#endif + { +#ifdef MNG_DECREMENT_LOOPS + for (iX = pData->iDatawidth * pData->iDataheight; + iX > 0;iX--) +#else + for (iX = 0; iX < pData->iDatawidth * pData->iDataheight; iX++) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + *pWork = (mng_uint8)iRed; + *(pWork+1) = (mng_uint8)iGreen; + *(pWork+2) = (mng_uint8)iBlue; + *(pWork+3) = (mng_uint8)iAlpha; +#else + *pWork = (mng_uint8)pData->iBASIred; + *(pWork+1) = (mng_uint8)pData->iBASIgreen; + *(pWork+2) = (mng_uint8)pData->iBASIblue; + *(pWork+3) = (mng_uint8)pData->iBASIalpha; +#endif + pWork += 4; + } + } + + break; + } + + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->fInitrowproc = (mng_fptr)mng_init_rowproc; + pData->ePng_imgtype=mng_png_imgtype(pData->iColortype,pData->iBitdepth); +#else + switch (pData->iColortype) /* determine row initialization routine */ + { /* just to accomodate IDAT if it arrives */ + case 0 : { /* gray */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g4_i; + + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g16_i; + + break; + } +#endif + } + + break; + } + case 2 : { /* rgb */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_i; + + break; + } +#endif + } + + break; + } + case 3 : { /* indexed */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx4_i; + + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx8_i; + + break; + } + } + + break; + } + case 4 : { /* gray+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga16_i; + + break; + } +#endif + } + + break; + } + case 6 : { /* rgb+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_i; + + break; + } +#endif + } + + break; + } + } +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + + pData->iFilterofs = 0; /* determine filter characteristics */ + pData->iLevel0 = 0; /* default levels */ + pData->iLevel1 = 0; + pData->iLevel2 = 0; + pData->iLevel3 = 0; + +#ifdef FILTER192 + if (pData->iFilter == 0xC0) /* leveling & differing ? */ + { + switch (pData->iColortype) + { + case 0 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth <= 8) +#endif + pData->iFilterofs = 1; +#ifndef MNG_NO_16BIT_SUPPORT + else + pData->iFilterofs = 2; +#endif + + break; + } + case 2 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth <= 8) +#endif + pData->iFilterofs = 3; +#ifndef MNG_NO_16BIT_SUPPORT + else + pData->iFilterofs = 6; +#endif + + break; + } + case 3 : { + pData->iFilterofs = 1; + break; + } + case 4 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth <= 8) +#endif + pData->iFilterofs = 2; +#ifndef MNG_NO_16BIT_SUPPORT + else + pData->iFilterofs = 4; +#endif + + break; + } + case 6 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (pData->iBitdepth <= 8) +#endif + pData->iFilterofs = 4; +#ifndef MNG_NO_16BIT_SUPPORT + else + pData->iFilterofs = 8; +#endif + + break; + } + } + } +#endif + +#ifdef FILTER193 + if (pData->iFilter == 0xC1) /* no adaptive filtering ? */ + pData->iPixelofs = pData->iFilterofs; + else +#endif + pData->iPixelofs = pData->iFilterofs + 1; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_BASI, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_CLON +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_clon (mng_datap pData, + mng_uint16 iSourceid, + mng_uint16 iCloneid, + mng_uint8 iClonetype, + mng_bool bHasdonotshow, + mng_uint8 iDonotshow, + mng_uint8 iConcrete, + mng_bool bHasloca, + mng_uint8 iLocationtype, + mng_int32 iLocationx, + mng_int32 iLocationy) +#else +mng_retcode mng_process_display_clon (mng_datap pData) +#endif +{ + mng_imagep pSource, pClone; + mng_bool bVisible, bAbstract; + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_START); +#endif +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + /* locate the source object first */ + pSource = mng_find_imageobject (pData, iSourceid); + /* check if the clone exists */ + pClone = mng_find_imageobject (pData, iCloneid); +#else + /* locate the source object first */ + pSource = mng_find_imageobject (pData, pData->iCLONsourceid); + /* check if the clone exists */ + pClone = mng_find_imageobject (pData, pData->iCLONcloneid); +#endif + + if (!pSource) /* source must exist ! */ + MNG_ERROR (pData, MNG_OBJECTUNKNOWN); + + if (pClone) /* clone must not exist ! */ + MNG_ERROR (pData, MNG_OBJECTEXISTS); + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (bHasdonotshow) /* DoNotShow flag filled ? */ + bVisible = (mng_bool)(iDonotshow == 0); + else + bVisible = pSource->bVisible; +#else + if (pData->bCLONhasdonotshow) /* DoNotShow flag filled ? */ + bVisible = (mng_bool)(pData->iCLONdonotshow == 0); + else + bVisible = pSource->bVisible; +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + bAbstract = (mng_bool)(iConcrete == 1); +#else + bAbstract = (mng_bool)(pData->iCLONconcrete == 1); +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + switch (iClonetype) /* determine action to take */ + { + case 0 : { /* full clone */ + iRetcode = mng_clone_imageobject (pData, iCloneid, MNG_FALSE, + bVisible, bAbstract, bHasloca, + iLocationtype, iLocationx, iLocationy, + pSource, &pClone); + break; + } + + case 1 : { /* partial clone */ + iRetcode = mng_clone_imageobject (pData, iCloneid, MNG_TRUE, + bVisible, bAbstract, bHasloca, + iLocationtype, iLocationx, iLocationy, + pSource, &pClone); + break; + } + + case 2 : { /* renumber object */ + iRetcode = mng_renum_imageobject (pData, pSource, iCloneid, + bVisible, bAbstract, bHasloca, + iLocationtype, iLocationx, iLocationy); + pClone = pSource; + break; + } + + } +#else + switch (pData->iCLONclonetype) /* determine action to take */ + { + case 0 : { /* full clone */ + iRetcode = mng_clone_imageobject (pData, pData->iCLONcloneid, MNG_FALSE, + bVisible, bAbstract, + pData->bCLONhasloca, pData->iCLONlocationtype, + pData->iCLONlocationx, pData->iCLONlocationy, + pSource, &pClone); + break; + } + + case 1 : { /* partial clone */ + iRetcode = mng_clone_imageobject (pData, pData->iCLONcloneid, MNG_TRUE, + bVisible, bAbstract, + pData->bCLONhasloca, pData->iCLONlocationtype, + pData->iCLONlocationx, pData->iCLONlocationy, + pSource, &pClone); + break; + } + + case 2 : { /* renumber object */ + iRetcode = mng_renum_imageobject (pData, pSource, pData->iCLONcloneid, + bVisible, bAbstract, + pData->bCLONhasloca, pData->iCLONlocationtype, + pData->iCLONlocationx, pData->iCLONlocationy); + pClone = pSource; + break; + } + + } +#endif + + if (iRetcode) /* on error bail out */ + return iRetcode; + + /* display on the fly ? */ + if ((pClone->bViewable) && (pClone->bVisible)) + { + pData->pLastclone = pClone; /* remember in case of timer break ! */ + /* display it */ + mng_display_image (pData, pClone, MNG_FALSE); + + if (pData->bTimerset) /* timer break ? */ + pData->iBreakpoint = 5; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_display_clon2 (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_START); +#endif + /* only called after timer break ! */ + mng_display_image (pData, (mng_imagep)pData->pLastclone, MNG_FALSE); + pData->iBreakpoint = 0; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLON, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_DISC +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_disc (mng_datap pData, + mng_uint32 iCount, + mng_uint16p pIds) +#else +mng_retcode mng_process_display_disc (mng_datap pData) +#endif +{ + mng_uint32 iX; + mng_imagep pImage; + mng_uint32 iRetcode; +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DISC, MNG_LC_START); +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (iCount) /* specific list ? */ +#else + if (pData->iDISCcount) /* specific list ? */ +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + mng_uint16p pWork = pIds; +#else + mng_uint16p pWork = pData->pDISCids; +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +#ifdef MNG_DECREMENT_LOOPS /* iterate the list */ + for (iX = iCount; iX > 0; iX--) +#else + for (iX = 0; iX < iCount; iX++) +#endif +#else +#ifdef MNG_DECREMENT_LOOPS /* iterate the list */ + for (iX = pData->iDISCcount; iX > 0; iX--) +#else + for (iX = 0; iX < pData->iDISCcount; iX++) +#endif +#endif + { + pImage = mng_find_imageobject (pData, *pWork++); + + if (pImage) /* found the object ? */ + { /* then drop it */ + iRetcode = mng_free_imageobject (pData, pImage); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } + } + else /* empty: drop all un-frozen objects */ + { + mng_imagep pNext = (mng_imagep)pData->pFirstimgobj; + + while (pNext) /* any left ? */ + { + pImage = pNext; + pNext = pImage->sHeader.pNext; + + if (!pImage->bFrozen) /* not frozen ? */ + { /* then drop it */ + iRetcode = mng_free_imageobject (pData, pImage); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DISC, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_FRAM +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_fram (mng_datap pData, + mng_uint8 iFramemode, + mng_uint8 iChangedelay, + mng_uint32 iDelay, + mng_uint8 iChangetimeout, + mng_uint32 iTimeout, + mng_uint8 iChangeclipping, + mng_uint8 iCliptype, + mng_int32 iClipl, + mng_int32 iClipr, + mng_int32 iClipt, + mng_int32 iClipb) +#else +mng_retcode mng_process_display_fram (mng_datap pData) +#endif +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_START); +#endif + /* advance a frame then */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + iRetcode = next_frame (pData, iFramemode, iChangedelay, iDelay, + iChangetimeout, iTimeout, iChangeclipping, + iCliptype, iClipl, iClipr, iClipt, iClipb); +#else + iRetcode = next_frame (pData, pData->iTempFramemode, pData->iTempChangedelay, + pData->iTempDelay, pData->iTempChangetimeout, + pData->iTempTimeout, pData->iTempChangeclipping, + pData->iTempCliptype, pData->iTempClipl, pData->iTempClipr, + pData->iTempClipt, pData->iTempClipb); +#endif + + if (pData->bTimerset) /* timer break ? */ + pData->iBreakpoint = 1; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_END); +#endif + + return iRetcode; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_display_fram2 (mng_datap pData) +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_START); +#endif + /* again; after the break */ + iRetcode = next_frame (pData, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); + pData->iBreakpoint = 0; /* not again! */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_FRAM, MNG_LC_END); +#endif + + return iRetcode; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MOVE +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_move (mng_datap pData, + mng_uint16 iFromid, + mng_uint16 iToid, + mng_uint8 iMovetype, + mng_int32 iMovex, + mng_int32 iMovey) +#else +mng_retcode mng_process_display_move (mng_datap pData) +#endif +{ + mng_uint16 iX; + mng_imagep pImage; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MOVE, MNG_LC_START); +#endif + /* iterate the list */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = iFromid; iX <= iToid; iX++) +#else + for (iX = pData->iMOVEfromid; iX <= pData->iMOVEtoid; iX++) +#endif + { + if (!iX) /* object id=0 ? */ + pImage = (mng_imagep)pData->pObjzero; + else + pImage = mng_find_imageobject (pData, iX); + + if (pImage) /* object exists ? */ + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + switch (iMovetype) +#else + switch (pData->iMOVEmovetype) +#endif + { + case 0 : { /* absolute */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage->iPosx = iMovex; + pImage->iPosy = iMovey; +#else + pImage->iPosx = pData->iMOVEmovex; + pImage->iPosy = pData->iMOVEmovey; +#endif + break; + } + case 1 : { /* relative */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage->iPosx = pImage->iPosx + iMovex; + pImage->iPosy = pImage->iPosy + iMovey; +#else + pImage->iPosx = pImage->iPosx + pData->iMOVEmovex; + pImage->iPosy = pImage->iPosy + pData->iMOVEmovey; +#endif + break; + } + } + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MOVE, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_CLIP +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_clip (mng_datap pData, + mng_uint16 iFromid, + mng_uint16 iToid, + mng_uint8 iCliptype, + mng_int32 iClipl, + mng_int32 iClipr, + mng_int32 iClipt, + mng_int32 iClipb) +#else +mng_retcode mng_process_display_clip (mng_datap pData) +#endif +{ + mng_uint16 iX; + mng_imagep pImage; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLIP, MNG_LC_START); +#endif + /* iterate the list */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = iFromid; iX <= iToid; iX++) +#else + for (iX = pData->iCLIPfromid; iX <= pData->iCLIPtoid; iX++) +#endif + { + if (!iX) /* object id=0 ? */ + pImage = (mng_imagep)pData->pObjzero; + else + pImage = mng_find_imageobject (pData, iX); + + if (pImage) /* object exists ? */ + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + switch (iCliptype) +#else + switch (pData->iCLIPcliptype) +#endif + { + case 0 : { /* absolute */ + pImage->bClipped = MNG_TRUE; +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage->iClipl = iClipl; + pImage->iClipr = iClipr; + pImage->iClipt = iClipt; + pImage->iClipb = iClipb; +#else + pImage->iClipl = pData->iCLIPclipl; + pImage->iClipr = pData->iCLIPclipr; + pImage->iClipt = pData->iCLIPclipt; + pImage->iClipb = pData->iCLIPclipb; +#endif + break; + } + case 1 : { /* relative */ + pImage->bClipped = MNG_TRUE; +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage->iClipl = pImage->iClipl + iClipl; + pImage->iClipr = pImage->iClipr + iClipr; + pImage->iClipt = pImage->iClipt + iClipt; + pImage->iClipb = pImage->iClipb + iClipb; +#else + pImage->iClipl = pImage->iClipl + pData->iCLIPclipl; + pImage->iClipr = pImage->iClipr + pData->iCLIPclipr; + pImage->iClipt = pImage->iClipt + pData->iCLIPclipt; + pImage->iClipb = pImage->iClipb + pData->iCLIPclipb; +#endif + break; + } + } + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_CLIP, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SHOW +mng_retcode mng_process_display_show (mng_datap pData) +{ + mng_int16 iX, iS, iFrom, iTo; + mng_imagep pImage; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SHOW, MNG_LC_START); +#endif + + /* TODO: optimization for the cases where "abs (iTo - iFrom)" is rather high; + especially where ((iFrom==1) && (iTo==65535)); eg. an empty SHOW !!! */ + + if (pData->iBreakpoint == 3) /* previously broken during cycle-mode ? */ + { + pImage = mng_find_imageobject (pData, pData->iSHOWnextid); + + if (pImage) /* still there ? */ + mng_display_image (pData, pImage, MNG_FALSE); + + pData->iBreakpoint = 0; /* let's not go through this again! */ + } + else + { + if (pData->iBreakpoint) /* previously broken at other point ? */ + { /* restore last parms */ + iFrom = (mng_int16)pData->iSHOWfromid; + iTo = (mng_int16)pData->iSHOWtoid; + iX = (mng_int16)pData->iSHOWnextid; + iS = (mng_int16)pData->iSHOWskip; + } + else + { /* regular sequence ? */ + if (pData->iSHOWtoid >= pData->iSHOWfromid) + iS = 1; + else /* reverse sequence ! */ + iS = -1; + + iFrom = (mng_int16)pData->iSHOWfromid; + iTo = (mng_int16)pData->iSHOWtoid; + iX = iFrom; + + pData->iSHOWfromid = (mng_uint16)iFrom; + pData->iSHOWtoid = (mng_uint16)iTo; + pData->iSHOWskip = iS; + } + /* cycle mode ? */ + if ((pData->iSHOWmode == 6) || (pData->iSHOWmode == 7)) + { + mng_uint16 iTrigger = 0; + mng_uint16 iFound = 0; + mng_uint16 iPass = 0; + mng_imagep pFound = 0; + + do + { + iPass++; /* lets prevent endless loops when there + are no potential candidates in the list! */ + + if (iS > 0) /* forward ? */ + { + for (iX = iFrom; iX <= iTo; iX += iS) + { + pImage = mng_find_imageobject (pData, (mng_uint16)iX); + + if (pImage) /* object exists ? */ + { + if (iFound) /* already found a candidate ? */ + pImage->bVisible = MNG_FALSE; + else + if (iTrigger) /* found the trigger ? */ + { + pImage->bVisible = MNG_TRUE; + iFound = iX; + pFound = pImage; + } + else + if (pImage->bVisible) /* ok, this is the trigger */ + { + pImage->bVisible = MNG_FALSE; + iTrigger = iX; + } + } + } + } + else + { + for (iX = iFrom; iX >= iTo; iX += iS) + { + pImage = mng_find_imageobject (pData, (mng_uint16)iX); + + if (pImage) /* object exists ? */ + { + if (iFound) /* already found a candidate ? */ + pImage->bVisible = MNG_FALSE; + else + if (iTrigger) /* found the trigger ? */ + { + pImage->bVisible = MNG_TRUE; + iFound = iX; + pFound = pImage; + } + else + if (pImage->bVisible) /* ok, this is the trigger */ + { + pImage->bVisible = MNG_FALSE; + iTrigger = iX; + } + } + } + } + + if (!iTrigger) /* did not find a trigger ? */ + iTrigger = 1; /* then fake it so the first image + gets nominated */ + } /* cycle back to beginning ? */ + while ((iPass < 2) && (iTrigger) && (!iFound)); + + pData->iBreakpoint = 0; /* just a sanity precaution */ + /* display it ? */ + if ((pData->iSHOWmode == 6) && (pFound)) + { + mng_display_image (pData, pFound, MNG_FALSE); + + if (pData->bTimerset) /* timer set ? */ + { + pData->iBreakpoint = 3; + pData->iSHOWnextid = iFound; /* save it for after the break */ + } + } + } + else + { + do + { + pImage = mng_find_imageobject (pData, iX); + + if (pImage) /* object exists ? */ + { + if (pData->iBreakpoint) /* did we get broken last time ? */ + { /* could only happen in the display routine */ + mng_display_image (pData, pImage, MNG_FALSE); + pData->iBreakpoint = 0; /* only once inside this loop please ! */ + } + else + { + switch (pData->iSHOWmode) /* do what ? */ + { + case 0 : { + pImage->bVisible = MNG_TRUE; + mng_display_image (pData, pImage, MNG_FALSE); + break; + } + case 1 : { + pImage->bVisible = MNG_FALSE; + break; + } + case 2 : { + if (pImage->bVisible) + mng_display_image (pData, pImage, MNG_FALSE); + break; + } + case 3 : { + pImage->bVisible = MNG_TRUE; + break; + } + case 4 : { + pImage->bVisible = (mng_bool)(!pImage->bVisible); + if (pImage->bVisible) + mng_display_image (pData, pImage, MNG_FALSE); + break; + } + case 5 : { + pImage->bVisible = (mng_bool)(!pImage->bVisible); + } + } + } + } + + if (!pData->bTimerset) /* next ? */ + iX += iS; + + } /* continue ? */ + while ((!pData->bTimerset) && (((iS > 0) && (iX <= iTo)) || + ((iS < 0) && (iX >= iTo)) )); + + if (pData->bTimerset) /* timer set ? */ + { + pData->iBreakpoint = 4; + pData->iSHOWnextid = iX; /* save for next time */ + } + else + pData->iBreakpoint = 0; + + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SHOW, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SAVE +mng_retcode mng_process_display_save (mng_datap pData) +{ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SAVE, MNG_LC_START); +#endif + + iRetcode = save_state (pData); /* save the current state */ + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SAVE, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_SEEK +mng_retcode mng_process_display_seek (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SEEK, MNG_LC_START); +#endif + +#ifdef MNG_SUPPORT_DYNAMICMNG + if (pData->bStopafterseek) /* need to stop after this SEEK ? */ + { + pData->bFreezing = MNG_TRUE; /* stop processing on this one */ + pData->bRunningevent = MNG_FALSE; + pData->bStopafterseek = MNG_FALSE; + pData->bNeedrefresh = MNG_TRUE; /* make sure the last bit is displayed ! */ + } + else +#endif + { /* restore the initial or SAVE state */ + mng_retcode iRetcode = restore_state (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_DYNAMICMNG + /* stop after next SEEK ? */ + if ((pData->bDynamic) || (pData->bRunningevent)) + pData->bStopafterseek = MNG_TRUE; +#endif + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_SEEK, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG +mng_retcode mng_process_display_jhdr (mng_datap pData) +{ /* address the current "object" if any */ + mng_imagep pImage = (mng_imagep)pData->pCurrentobj; + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JHDR, MNG_LC_START); +#endif + + if (!pData->bHasDHDR) + { + pData->fInitrowproc = MNG_NULL; /* do nothing by default */ + pData->fDisplayrow = MNG_NULL; + pData->fCorrectrow = MNG_NULL; + pData->fStorerow = MNG_NULL; + pData->fProcessrow = MNG_NULL; + pData->fDifferrow = MNG_NULL; + pData->fStorerow2 = MNG_NULL; + pData->fStorerow3 = MNG_NULL; + + pData->pStoreobj = MNG_NULL; /* initialize important work-parms */ + + pData->iJPEGrow = 0; + pData->iJPEGalpharow = 0; + pData->iJPEGrgbrow = 0; + pData->iRowmax = 0; /* so init_rowproc does the right thing ! */ + } + + if (!pData->iBreakpoint) /* not previously broken ? */ + { +#ifndef MNG_NO_DELTA_PNG + if (pData->bHasDHDR) /* delta-image ? */ + { + if (pData->iDeltatype == MNG_DELTATYPE_REPLACE) + { + iRetcode = mng_reset_object_details (pData, (mng_imagep)pData->pDeltaImage, + pData->iDatawidth, pData->iDataheight, + pData->iJHDRimgbitdepth, pData->iJHDRcolortype, + pData->iJHDRalphacompression, pData->iJHDRalphafilter, + pData->iJHDRalphainterlace, MNG_TRUE); + + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphabitdepth = pData->iJHDRalphabitdepth; + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iJHDRcompression = pData->iJHDRimgcompression; + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iJHDRinterlace = pData->iJHDRimginterlace; + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth; + } + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + { + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iJHDRimgbitdepth; + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth; + } + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) ) + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth; + else + if ((pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) || + (pData->iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) ) + ((mng_imagep)pData->pDeltaImage)->pImgbuf->iPixelsampledepth = pData->iJHDRimgbitdepth; + + } + else +#endif /* MNG_NO_DELTA_PNG */ + { + if (pImage) /* update object buffer ? */ + { + iRetcode = mng_reset_object_details (pData, pImage, + pData->iDatawidth, pData->iDataheight, + pData->iJHDRimgbitdepth, pData->iJHDRcolortype, + pData->iJHDRalphacompression, pData->iJHDRalphafilter, + pData->iJHDRalphainterlace, MNG_TRUE); + + pImage->pImgbuf->iAlphabitdepth = pData->iJHDRalphabitdepth; + pImage->pImgbuf->iJHDRcompression = pData->iJHDRimgcompression; + pImage->pImgbuf->iJHDRinterlace = pData->iJHDRimginterlace; + pImage->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth; + } + else /* update object 0 */ + { + iRetcode = mng_reset_object_details (pData, (mng_imagep)pData->pObjzero, + pData->iDatawidth, pData->iDataheight, + pData->iJHDRimgbitdepth, pData->iJHDRcolortype, + pData->iJHDRalphacompression, pData->iJHDRalphafilter, + pData->iJHDRalphainterlace, MNG_TRUE); + + ((mng_imagep)pData->pObjzero)->pImgbuf->iAlphabitdepth = pData->iJHDRalphabitdepth; + ((mng_imagep)pData->pObjzero)->pImgbuf->iJHDRcompression = pData->iJHDRimgcompression; + ((mng_imagep)pData->pObjzero)->pImgbuf->iJHDRinterlace = pData->iJHDRimginterlace; + ((mng_imagep)pData->pObjzero)->pImgbuf->iAlphasampledepth = pData->iJHDRalphabitdepth; + } + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + + if (!pData->bHasDHDR) + { /* we're always storing a JPEG */ + if (pImage) /* real object ? */ + pData->pStoreobj = pImage; /* tell the row routines */ + else /* otherwise use object 0 */ + pData->pStoreobj = pData->pObjzero; + /* display "on-the-fly" ? */ + if ( +#ifndef MNG_SKIPCHUNK_MAGN + ( ((mng_imagep)pData->pStoreobj)->iMAGN_MethodX == 0) && + ( ((mng_imagep)pData->pStoreobj)->iMAGN_MethodY == 0) && +#endif + ( (pData->eImagetype == mng_it_jng ) || + (((mng_imagep)pData->pStoreobj)->bVisible) ) ) + { + next_layer (pData); /* that's a new layer then ! */ + + pData->iBreakpoint = 0; + + if (pData->bTimerset) /* timer break ? */ + pData->iBreakpoint = 7; + else + if (pData->bRunning) /* still running ? */ + { /* anything to display ? */ + if ((pData->iDestr > pData->iDestl) && (pData->iDestb > pData->iDestt)) + { + set_display_routine (pData); /* then determine display routine */ + /* display from the object we store in */ + pData->pRetrieveobj = pData->pStoreobj; + } + } + } + } + + if (!pData->bTimerset) /* no timer break ? */ + { /* default row initialization ! */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->ePng_imgtype=png_none; +#endif + pData->fInitrowproc = (mng_fptr)mng_init_rowproc; + + if ((!pData->bHasDHDR) || (pData->iDeltatype == MNG_DELTATYPE_REPLACE)) + { /* 8-bit JPEG ? */ + if (pData->iJHDRimgbitdepth == 8) + { /* intermediate row is 8-bit deep */ + pData->bIsRGBA16 = MNG_FALSE; + pData->iRowsamples = pData->iDatawidth; + + switch (pData->iJHDRcolortype) /* determine pixel processing routines */ + { + case MNG_COLORTYPE_JPEGGRAY : + { + pData->fStorerow2 = (mng_fptr)mng_store_jpeg_g8; + pData->fRetrieverow = (mng_fptr)mng_retrieve_g8; + pData->bIsOpaque = MNG_TRUE; + break; + } + case MNG_COLORTYPE_JPEGCOLOR : + { + pData->fStorerow2 = (mng_fptr)mng_store_jpeg_rgb8; + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8; + pData->bIsOpaque = MNG_TRUE; + break; + } + case MNG_COLORTYPE_JPEGGRAYA : + { + pData->fStorerow2 = (mng_fptr)mng_store_jpeg_ga8; + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8; + pData->bIsOpaque = MNG_FALSE; + break; + } + case MNG_COLORTYPE_JPEGCOLORA : + { + pData->fStorerow2 = (mng_fptr)mng_store_jpeg_rgba8; + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8; + pData->bIsOpaque = MNG_FALSE; + break; + } + } + } +#ifndef MNG_NO_16BIT_SUPPORT + else + { + pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ + + /* TODO: 12-bit JPEG */ + /* TODO: 8- + 12-bit JPEG (eg. type=20) */ + + } +#endif + /* possible IDAT alpha-channel ? */ + if (pData->iJHDRalphacompression == MNG_COMPRESSION_DEFLATE) + { + /* determine alpha processing routine */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->fInitrowproc = (mng_fptr)mng_init_rowproc; +#endif + switch (pData->iJHDRalphabitdepth) + { +#ifndef MNG_OPTIMIZE_FOOTPRINT_INIT +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->fInitrowproc = (mng_fptr)mng_init_jpeg_a1_ni; break; } + case 2 : { pData->fInitrowproc = (mng_fptr)mng_init_jpeg_a2_ni; break; } + case 4 : { pData->fInitrowproc = (mng_fptr)mng_init_jpeg_a4_ni; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { pData->fInitrowproc = (mng_fptr)mng_init_jpeg_a8_ni; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fInitrowproc = (mng_fptr)mng_init_jpeg_a16_ni; break; } +#endif +#else +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->ePng_imgtype = png_jpeg_a1; break; } + case 2 : { pData->ePng_imgtype = png_jpeg_a2; break; } + case 4 : { pData->ePng_imgtype = png_jpeg_a4; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { pData->ePng_imgtype = png_jpeg_a8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->ePng_imgtype = png_jpeg_a16; break; } +#endif +#endif + } + } + else /* possible JDAA alpha-channel ? */ + if (pData->iJHDRalphacompression == MNG_COMPRESSION_BASELINEJPEG) + { /* 8-bit JPEG ? */ + if (pData->iJHDRimgbitdepth == 8) + { + if (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA) + pData->fStorerow3 = (mng_fptr)mng_store_jpeg_g8_alpha; + else + if (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) + pData->fStorerow3 = (mng_fptr)mng_store_jpeg_rgb8_alpha; + } + else + { + /* TODO: 12-bit JPEG with 8-bit JDAA */ + } + } + /* initialize JPEG library */ + iRetcode = mngjpeg_initialize (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + else + { /* must be alpha add/replace !! */ + if ((pData->iDeltatype != MNG_DELTATYPE_BLOCKALPHAADD ) && + (pData->iDeltatype != MNG_DELTATYPE_BLOCKALPHAREPLACE) ) + MNG_ERROR (pData, MNG_INVDELTATYPE); + /* determine alpha processing routine */ +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->fInitrowproc = (mng_fptr)mng_init_rowproc; +#endif + switch (pData->iJHDRalphabitdepth) + { +#ifndef MNG_OPTIMIZE_FOOTPRINT_INIT +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->fInitrowproc = (mng_fptr)mng_init_g1_ni; break; } + case 2 : { pData->fInitrowproc = (mng_fptr)mng_init_g2_ni; break; } + case 4 : { pData->fInitrowproc = (mng_fptr)mng_init_g4_ni; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { pData->fInitrowproc = (mng_fptr)mng_init_g8_ni; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->fInitrowproc = (mng_fptr)mng_init_g16_ni; break; } +#endif +#else +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { pData->ePng_imgtype = png_jpeg_a1; break; } + case 2 : { pData->ePng_imgtype = png_jpeg_a2; break; } + case 4 : { pData->ePng_imgtype = png_jpeg_a4; break; } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { pData->ePng_imgtype = png_jpeg_a8; break; } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { pData->ePng_imgtype = png_jpeg_a16; break; } +#endif +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + } + } + + pData->iFilterofs = 0; /* determine filter characteristics */ + pData->iLevel0 = 0; /* default levels */ + pData->iLevel1 = 0; + pData->iLevel2 = 0; + pData->iLevel3 = 0; + +#ifdef FILTER192 /* leveling & differing ? */ + if (pData->iJHDRalphafilter == 0xC0) + { + if (pData->iJHDRalphabitdepth <= 8) + pData->iFilterofs = 1; + else + pData->iFilterofs = 2; + + } +#endif +#ifdef FILTER193 /* no adaptive filtering ? */ + if (pData->iJHDRalphafilter == 0xC1) + pData->iPixelofs = pData->iFilterofs; + else +#endif + pData->iPixelofs = pData->iFilterofs + 1; + + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JHDR, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_jdaa (mng_datap pData, + mng_uint32 iRawlen, + mng_uint8p pRawdata) +#else +mng_retcode mng_process_display_jdaa (mng_datap pData) +#endif +{ + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAA, MNG_LC_START); +#endif + + if (!pData->bJPEGdecompress2) /* if we're not decompressing already */ + { + if (pData->fInitrowproc) /* initialize row-processing? */ + { + iRetcode = ((mng_initrowproc)pData->fInitrowproc) (pData); + pData->fInitrowproc = MNG_NULL; /* only call this once !!! */ + } + + if (!iRetcode) /* initialize decompress */ + iRetcode = mngjpeg_decompressinit2 (pData); + } + + if (!iRetcode) /* all ok? then decompress, my man */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + iRetcode = mngjpeg_decompressdata2 (pData, iRawlen, pRawdata); +#else + iRetcode = mngjpeg_decompressdata2 (pData, pData->iRawlen, pData->pRawdata); +#endif + + if (iRetcode) + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAA, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ + +#ifdef MNG_INCLUDE_JNG +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_jdat (mng_datap pData, + mng_uint32 iRawlen, + mng_uint8p pRawdata) +#else +mng_retcode mng_process_display_jdat (mng_datap pData) +#endif +{ + mng_retcode iRetcode = MNG_NOERROR; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAT, MNG_LC_START); +#endif + + if (pData->bRestorebkgd) /* need to restore the background ? */ + { + pData->bRestorebkgd = MNG_FALSE; + iRetcode = load_bkgdlayer (pData); + + pData->iLayerseq++; /* and it counts as a layer then ! */ + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + + if (!pData->bJPEGdecompress) /* if we're not decompressing already */ + { + if (pData->fInitrowproc) /* initialize row-processing? */ + { + iRetcode = ((mng_initrowproc)pData->fInitrowproc) (pData); + pData->fInitrowproc = MNG_NULL; /* only call this once !!! */ + } + + if (!iRetcode) /* initialize decompress */ + iRetcode = mngjpeg_decompressinit (pData); + } + + if (!iRetcode) /* all ok? then decompress, my man */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + iRetcode = mngjpeg_decompressdata (pData, iRawlen, pRawdata); +#else + iRetcode = mngjpeg_decompressdata (pData, pData->iRawlen, pData->pRawdata); +#endif + + if (iRetcode) + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_JDAT, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_INCLUDE_JNG */ + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_dhdr (mng_datap pData, + mng_uint16 iObjectid, + mng_uint8 iImagetype, + mng_uint8 iDeltatype, + mng_uint32 iBlockwidth, + mng_uint32 iBlockheight, + mng_uint32 iBlockx, + mng_uint32 iBlocky) +#else +mng_retcode mng_process_display_dhdr (mng_datap pData) +#endif +{ + mng_imagep pImage; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DHDR, MNG_LC_START); +#endif + + pData->fInitrowproc = MNG_NULL; /* do nothing by default */ + pData->fDisplayrow = MNG_NULL; + pData->fCorrectrow = MNG_NULL; + pData->fStorerow = MNG_NULL; + pData->fProcessrow = MNG_NULL; + pData->pStoreobj = MNG_NULL; + + pData->fDeltagetrow = MNG_NULL; + pData->fDeltaaddrow = MNG_NULL; + pData->fDeltareplacerow = MNG_NULL; + pData->fDeltaputrow = MNG_NULL; + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage = mng_find_imageobject (pData, iObjectid); +#else + pImage = mng_find_imageobject (pData, pData->iDHDRobjectid); +#endif + + if (pImage) /* object exists ? */ + { + if (pImage->pImgbuf->bConcrete) /* is it concrete ? */ + { /* previous magnification to be done ? */ +#ifndef MNG_SKIPCHUNK_MAGN + if ((pImage->iMAGN_MethodX) || (pImage->iMAGN_MethodY)) + { + iRetcode = mng_magnify_imageobject (pData, pImage); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } +#endif + /* save delta fields */ + pData->pDeltaImage = (mng_ptr)pImage; +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pData->iDeltaImagetype = iImagetype; + pData->iDeltatype = iDeltatype; + pData->iDeltaBlockwidth = iBlockwidth; + pData->iDeltaBlockheight = iBlockheight; + pData->iDeltaBlockx = iBlockx; + pData->iDeltaBlocky = iBlocky; +#else + pData->iDeltaImagetype = pData->iDHDRimagetype; + pData->iDeltatype = pData->iDHDRdeltatype; + pData->iDeltaBlockwidth = pData->iDHDRblockwidth; + pData->iDeltaBlockheight = pData->iDHDRblockheight; + pData->iDeltaBlockx = pData->iDHDRblockx; + pData->iDeltaBlocky = pData->iDHDRblocky; +#endif + /* restore target-object fields */ + pData->iDatawidth = pImage->pImgbuf->iWidth; + pData->iDataheight = pImage->pImgbuf->iHeight; + pData->iBitdepth = pImage->pImgbuf->iBitdepth; + pData->iColortype = pImage->pImgbuf->iColortype; + pData->iCompression = pImage->pImgbuf->iCompression; + pData->iFilter = pImage->pImgbuf->iFilter; + pData->iInterlace = pImage->pImgbuf->iInterlace; + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if ((iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + pData->iBitdepth = pImage->pImgbuf->iPixelsampledepth; + else + if ((iDeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) || + (iDeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) ) + pData->iBitdepth = pImage->pImgbuf->iAlphasampledepth; + else + if ((iDeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) || + (iDeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) ) + pData->iBitdepth = pImage->pImgbuf->iPixelsampledepth; +#else + if ((pData->iDHDRdeltatype == MNG_DELTATYPE_BLOCKPIXELADD ) || + (pData->iDHDRdeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) + pData->iBitdepth = pImage->pImgbuf->iPixelsampledepth; + else + if ((pData->iDHDRdeltatype == MNG_DELTATYPE_BLOCKALPHAADD ) || + (pData->iDHDRdeltatype == MNG_DELTATYPE_BLOCKALPHAREPLACE) ) + pData->iBitdepth = pImage->pImgbuf->iAlphasampledepth; + else + if ((pData->iDHDRdeltatype == MNG_DELTATYPE_BLOCKCOLORADD ) || + (pData->iDHDRdeltatype == MNG_DELTATYPE_BLOCKCOLORREPLACE) ) + pData->iBitdepth = pImage->pImgbuf->iPixelsampledepth; +#endif + +#ifdef MNG_INCLUDE_JNG + pData->iJHDRimgbitdepth = pImage->pImgbuf->iBitdepth; + pData->iJHDRcolortype = pImage->pImgbuf->iColortype; + pData->iJHDRimgcompression = pImage->pImgbuf->iJHDRcompression; + pData->iJHDRimginterlace = pImage->pImgbuf->iJHDRinterlace; + pData->iJHDRalphacompression = pImage->pImgbuf->iCompression; + pData->iJHDRalphafilter = pImage->pImgbuf->iFilter; + pData->iJHDRalphainterlace = pImage->pImgbuf->iInterlace; + pData->iJHDRalphabitdepth = pImage->pImgbuf->iAlphabitdepth; +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + /* block size specified ? */ + if (iDeltatype != MNG_DELTATYPE_NOCHANGE) + { /* block entirely within target ? */ + if (iDeltatype != MNG_DELTATYPE_REPLACE) + { + if (((iBlockx + iBlockwidth ) > pData->iDatawidth ) || + ((iBlocky + iBlockheight) > pData->iDataheight) ) + MNG_ERROR (pData, MNG_INVALIDBLOCK); + } + + pData->iDatawidth = iBlockwidth; + pData->iDataheight = iBlockheight; + } +#else + /* block size specified ? */ + if (pData->iDHDRdeltatype != MNG_DELTATYPE_NOCHANGE) + { /* block entirely within target ? */ + if (pData->iDHDRdeltatype != MNG_DELTATYPE_REPLACE) + { + if (((pData->iDHDRblockx + pData->iDHDRblockwidth ) > pData->iDatawidth ) || + ((pData->iDHDRblocky + pData->iDHDRblockheight) > pData->iDataheight) ) + MNG_ERROR (pData, MNG_INVALIDBLOCK); + } + + pData->iDatawidth = pData->iDHDRblockwidth; + pData->iDataheight = pData->iDHDRblockheight; + } +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + switch (iDeltatype) /* determine nr of delta-channels */ +#else + switch (pData->iDHDRdeltatype) /* determine nr of delta-channels */ +#endif + { + case MNG_DELTATYPE_BLOCKALPHAADD : ; + case MNG_DELTATYPE_BLOCKALPHAREPLACE : + { +#ifdef MNG_INCLUDE_JNG + if ((pData->iColortype == MNG_COLORTYPE_GRAYA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA) ) + { + pData->iColortype = MNG_COLORTYPE_GRAY; + pData->iJHDRcolortype = MNG_COLORTYPE_JPEGGRAY; + } + else + if ((pData->iColortype == MNG_COLORTYPE_RGBA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) + { + pData->iColortype = MNG_COLORTYPE_GRAY; + pData->iJHDRcolortype = MNG_COLORTYPE_JPEGGRAY; + } +#else + if (pData->iColortype == MNG_COLORTYPE_GRAYA) + pData->iColortype = MNG_COLORTYPE_GRAY; + else + if (pData->iColortype == MNG_COLORTYPE_RGBA) + pData->iColortype = MNG_COLORTYPE_GRAY; +#endif + else /* target has no alpha; that sucks! */ + MNG_ERROR (pData, MNG_TARGETNOALPHA); + + break; + } + + case MNG_DELTATYPE_BLOCKCOLORADD : ; + case MNG_DELTATYPE_BLOCKCOLORREPLACE : + { +#ifdef MNG_INCLUDE_JNG + if ((pData->iColortype == MNG_COLORTYPE_GRAYA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA) ) + { + pData->iColortype = MNG_COLORTYPE_GRAY; + pData->iJHDRcolortype = MNG_COLORTYPE_JPEGGRAY; + } + else + if ((pData->iColortype == MNG_COLORTYPE_RGBA ) || + (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) + { + pData->iColortype = MNG_COLORTYPE_RGB; + pData->iJHDRcolortype = MNG_COLORTYPE_JPEGCOLOR; + } +#else + if (pData->iColortype == MNG_COLORTYPE_GRAYA) + pData->iColortype = MNG_COLORTYPE_GRAY; + else + if (pData->iColortype == MNG_COLORTYPE_RGBA) + pData->iColortype = MNG_COLORTYPE_RGB; +#endif + else /* target has no alpha; that sucks! */ + MNG_ERROR (pData, MNG_TARGETNOALPHA); + + break; + } + + } + /* full image replace ? */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (iDeltatype == MNG_DELTATYPE_REPLACE) +#else + if (pData->iDHDRdeltatype == MNG_DELTATYPE_REPLACE) +#endif + { + iRetcode = mng_reset_object_details (pData, pImage, + pData->iDatawidth, pData->iDataheight, + pData->iBitdepth, pData->iColortype, + pData->iCompression, pData->iFilter, + pData->iInterlace, MNG_FALSE); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + pData->pStoreobj = pImage; /* and store straight into this object */ + } + else + { + mng_imagedatap pBufzero, pBuf; + /* we store in object 0 and process it later */ + pData->pStoreobj = pData->pObjzero; + /* make sure to initialize object 0 then */ + iRetcode = mng_reset_object_details (pData, (mng_imagep)pData->pObjzero, + pData->iDatawidth, pData->iDataheight, + pData->iBitdepth, pData->iColortype, + pData->iCompression, pData->iFilter, + pData->iInterlace, MNG_TRUE); + + if (iRetcode) /* on error bail out */ + return iRetcode; + + pBuf = pImage->pImgbuf; /* copy possible palette & cheap transparency */ + pBufzero = ((mng_imagep)pData->pObjzero)->pImgbuf; + + pBufzero->bHasPLTE = pBuf->bHasPLTE; + pBufzero->bHasTRNS = pBuf->bHasTRNS; + + if (pBufzero->bHasPLTE) /* copy palette ? */ + { + mng_uint32 iX; + + pBufzero->iPLTEcount = pBuf->iPLTEcount; + + for (iX = 0; iX < pBuf->iPLTEcount; iX++) + { + pBufzero->aPLTEentries [iX].iRed = pBuf->aPLTEentries [iX].iRed; + pBufzero->aPLTEentries [iX].iGreen = pBuf->aPLTEentries [iX].iGreen; + pBufzero->aPLTEentries [iX].iBlue = pBuf->aPLTEentries [iX].iBlue; + } + } + + if (pBufzero->bHasTRNS) /* copy cheap transparency ? */ + { + pBufzero->iTRNSgray = pBuf->iTRNSgray; + pBufzero->iTRNSred = pBuf->iTRNSred; + pBufzero->iTRNSgreen = pBuf->iTRNSgreen; + pBufzero->iTRNSblue = pBuf->iTRNSblue; + pBufzero->iTRNScount = pBuf->iTRNScount; + + MNG_COPY (pBufzero->aTRNSentries, pBuf->aTRNSentries, + sizeof (pBufzero->aTRNSentries)); + } + /* process immediately if bitdepth & colortype are equal */ + pData->bDeltaimmediate = + (mng_bool)((pData->bDisplaying) && (!pData->bSkipping) && + ((pData->bRunning) || (pData->bSearching)) && + (pData->iBitdepth == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iBitdepth ) && + (pData->iColortype == ((mng_imagep)pData->pDeltaImage)->pImgbuf->iColortype) ); + } + +#ifdef MNG_OPTIMIZE_FOOTPRINT_INIT + pData->fInitrowproc = (mng_fptr)mng_init_rowproc; + pData->ePng_imgtype = mng_png_imgtype (pData->iColortype, pData->iBitdepth); +#else + switch (pData->iColortype) /* determine row initialization routine */ + { + case 0 : { /* gray */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g4_i; + + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_g16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_g16_i; + + break; + } +#endif + } + + break; + } + case 2 : { /* rgb */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgb16_i; + + break; + } +#endif + } + + break; + } + case 3 : { /* indexed */ + switch (pData->iBitdepth) + { +#ifndef MNG_NO_1_2_4BIT_SUPPORT + case 1 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx1_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx1_i; + + break; + } + case 2 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx2_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx2_i; + + break; + } + case 4 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx4_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx4_i; + + break; + } +#endif /* MNG_NO_1_2_4BIT_SUPPORT */ + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_idx8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_idx8_i; + + break; + } + } + + break; + } + case 4 : { /* gray+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_ga16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_ga16_i; + + break; + } +#endif + } + + break; + } + case 6 : { /* rgb+alpha */ + switch (pData->iBitdepth) + { + case 8 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba8_i; + + break; + } +#ifndef MNG_NO_16BIT_SUPPORT + case 16 : { + if (!pData->iInterlace) + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_ni; + else + pData->fInitrowproc = (mng_fptr)mng_init_rgba16_i; + + break; + } +#endif + } + + break; + } + } +#endif /* MNG_OPTIMIZE_FOOTPRINT_INIT */ + } + else + MNG_ERROR (pData, MNG_OBJNOTCONCRETE); + + } + else + MNG_ERROR (pData, MNG_OBJECTUNKNOWN); + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_DHDR, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_prom (mng_datap pData, + mng_uint8 iBitdepth, + mng_uint8 iColortype, + mng_uint8 iFilltype) +#else +mng_retcode mng_process_display_prom (mng_datap pData) +#endif +{ + mng_imagep pImage; + mng_imagedatap pBuf; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PROM, MNG_LC_START); +#endif + + if (!pData->pDeltaImage) /* gotta have this now! */ + MNG_ERROR (pData, MNG_INVALIDDELTA); + + pImage = (mng_imagep)pData->pDeltaImage; + pBuf = pImage->pImgbuf; + /* can't demote bitdepth! */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (iBitdepth < pBuf->iBitdepth) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if ( ((pBuf->iColortype == MNG_COLORTYPE_GRAY ) && + (iColortype != MNG_COLORTYPE_GRAY ) && + (iColortype != MNG_COLORTYPE_GRAYA ) && + (iColortype != MNG_COLORTYPE_RGB ) && + (iColortype != MNG_COLORTYPE_RGBA ) ) || + ((pBuf->iColortype == MNG_COLORTYPE_GRAYA ) && + (iColortype != MNG_COLORTYPE_GRAYA ) && + (iColortype != MNG_COLORTYPE_RGBA ) ) || + ((pBuf->iColortype == MNG_COLORTYPE_RGB ) && + (iColortype != MNG_COLORTYPE_RGB ) && + (iColortype != MNG_COLORTYPE_RGBA ) ) || + ((pBuf->iColortype == MNG_COLORTYPE_RGBA ) && + (iColortype != MNG_COLORTYPE_RGBA ) ) || +#ifdef MNG_INCLUDE_JNG + ((pBuf->iColortype == MNG_COLORTYPE_JPEGGRAY ) && + (iColortype != MNG_COLORTYPE_JPEGGRAY ) && + (iColortype != MNG_COLORTYPE_JPEGCOLOR ) && + (iColortype != MNG_COLORTYPE_JPEGGRAYA ) && + (iColortype != MNG_COLORTYPE_JPEGCOLORA) ) || + ((pBuf->iColortype == MNG_COLORTYPE_JPEGCOLOR ) && + (iColortype != MNG_COLORTYPE_JPEGCOLOR ) && + (iColortype != MNG_COLORTYPE_JPEGCOLORA) ) || + ((pBuf->iColortype == MNG_COLORTYPE_JPEGGRAYA ) && + (iColortype != MNG_COLORTYPE_JPEGGRAYA ) && + (iColortype != MNG_COLORTYPE_JPEGCOLORA) ) || + ((pBuf->iColortype == MNG_COLORTYPE_JPEGCOLORA) && + (iColortype != MNG_COLORTYPE_JPEGCOLORA) ) || +#endif + ((pBuf->iColortype == MNG_COLORTYPE_INDEXED ) && + (iColortype != MNG_COLORTYPE_INDEXED ) && + (iColortype != MNG_COLORTYPE_RGB ) && + (iColortype != MNG_COLORTYPE_RGBA ) ) ) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + + iRetcode = mng_promote_imageobject (pData, pImage, iBitdepth, iColortype, iFilltype); +#else + if (pData->iPROMbitdepth < pBuf->iBitdepth) + MNG_ERROR (pData, MNG_INVALIDBITDEPTH); + + if ( ((pBuf->iColortype == MNG_COLORTYPE_GRAY ) && + (pData->iPROMcolortype != MNG_COLORTYPE_GRAY ) && + (pData->iPROMcolortype != MNG_COLORTYPE_GRAYA ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGB ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGBA ) ) || + ((pBuf->iColortype == MNG_COLORTYPE_GRAYA ) && + (pData->iPROMcolortype != MNG_COLORTYPE_GRAYA ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGBA ) ) || + ((pBuf->iColortype == MNG_COLORTYPE_RGB ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGB ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGBA ) ) || + ((pBuf->iColortype == MNG_COLORTYPE_RGBA ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGBA ) ) || +#ifdef MNG_INCLUDE_JNG + ((pBuf->iColortype == MNG_COLORTYPE_JPEGGRAY ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGGRAY ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGCOLOR ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGGRAYA ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGCOLORA) ) || + ((pBuf->iColortype == MNG_COLORTYPE_JPEGCOLOR ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGCOLOR ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGCOLORA) ) || + ((pBuf->iColortype == MNG_COLORTYPE_JPEGGRAYA ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGGRAYA ) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGCOLORA) ) || + ((pBuf->iColortype == MNG_COLORTYPE_JPEGCOLORA) && + (pData->iPROMcolortype != MNG_COLORTYPE_JPEGCOLORA) ) || +#endif + ((pBuf->iColortype == MNG_COLORTYPE_INDEXED ) && + (pData->iPROMcolortype != MNG_COLORTYPE_INDEXED ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGB ) && + (pData->iPROMcolortype != MNG_COLORTYPE_RGBA ) ) ) + MNG_ERROR (pData, MNG_INVALIDCOLORTYPE); + + iRetcode = mng_promote_imageobject (pData, pImage, pData->iPROMbitdepth, + pData->iPROMcolortype, pData->iPROMfilltype); +#endif + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PROM, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +mng_retcode mng_process_display_ipng (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IPNG, MNG_LC_START); +#endif + /* indicate it for what it is now */ + pData->iDeltaImagetype = MNG_IMAGETYPE_PNG; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IPNG, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifdef MNG_INCLUDE_JNG +mng_retcode mng_process_display_ijng (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IJNG, MNG_LC_START); +#endif + /* indicate it for what it is now */ + pData->iDeltaImagetype = MNG_IMAGETYPE_JNG; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_IJNG, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif +#endif + +/* ************************************************************************** */ + +#ifndef MNG_NO_DELTA_PNG +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_pplt (mng_datap pData, + mng_uint8 iType, + mng_uint32 iCount, + mng_palette8ep paIndexentries, + mng_uint8p paAlphaentries, + mng_uint8p paUsedentries) +#else +mng_retcode mng_process_display_pplt (mng_datap pData) +#endif +{ + mng_uint32 iX; + mng_imagep pImage = (mng_imagep)pData->pObjzero; + mng_imagedatap pBuf = pImage->pImgbuf; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PPLT, MNG_LC_START); +#endif + +#ifdef MNG_DECREMENT_LOOPS +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + iX = iCount; +#else + iX = pData->iPPLTcount; +#endif +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + switch (iType) +#else + switch (pData->iPPLTtype) +#endif + { + case MNG_DELTATYPE_REPLACERGB : + { +#ifdef MNG_DECREMENT_LOOPS + for (; iX > 0;iX--) +#else +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = 0; iX < iCount; iX++) +#else + for (iX = 0; iX < pData->iPPLTcount; iX++) +#endif +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (paUsedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = paIndexentries [iX].iRed; + pBuf->aPLTEentries [iX].iGreen = paIndexentries [iX].iGreen; + pBuf->aPLTEentries [iX].iBlue = paIndexentries [iX].iBlue; + } +#else + if (pData->paPPLTusedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = pData->paPPLTindexentries [iX].iRed; + pBuf->aPLTEentries [iX].iGreen = pData->paPPLTindexentries [iX].iGreen; + pBuf->aPLTEentries [iX].iBlue = pData->paPPLTindexentries [iX].iBlue; + } +#endif + } + + break; + } + case MNG_DELTATYPE_DELTARGB : + { +#ifdef MNG_DECREMENT_LOOPS + for (; iX > 0;iX--) +#else +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = 0; iX < iCount; iX++) +#else + for (iX = 0; iX < pData->iPPLTcount; iX++) +#endif +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (paUsedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = + (mng_uint8)(pBuf->aPLTEentries [iX].iRed + + paIndexentries [iX].iRed ); + pBuf->aPLTEentries [iX].iGreen = + (mng_uint8)(pBuf->aPLTEentries [iX].iGreen + + paIndexentries [iX].iGreen); + pBuf->aPLTEentries [iX].iBlue = + (mng_uint8)(pBuf->aPLTEentries [iX].iBlue + + paIndexentries [iX].iBlue ); + } +#else + if (pData->paPPLTusedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = + (mng_uint8)(pBuf->aPLTEentries [iX].iRed + + pData->paPPLTindexentries [iX].iRed ); + pBuf->aPLTEentries [iX].iGreen = + (mng_uint8)(pBuf->aPLTEentries [iX].iGreen + + pData->paPPLTindexentries [iX].iGreen); + pBuf->aPLTEentries [iX].iBlue = + (mng_uint8)(pBuf->aPLTEentries [iX].iBlue + + pData->paPPLTindexentries [iX].iBlue ); + } +#endif + } + + break; + } + case MNG_DELTATYPE_REPLACEALPHA : + { +#ifdef MNG_DECREMENT_LOOPS + for (; iX > 0;iX--) +#else +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = 0; iX < iCount; iX++) +#else + for (iX = 0; iX < pData->iPPLTcount; iX++) +#endif +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (paUsedentries [iX]) + pBuf->aTRNSentries [iX] = paAlphaentries [iX]; + } +#else + if (pData->paPPLTusedentries [iX]) + pBuf->aTRNSentries [iX] = pData->paPPLTalphaentries [iX]; + } +#endif + + break; + } + case MNG_DELTATYPE_DELTAALPHA : + { +#ifdef MNG_DECREMENT_LOOPS + for (; iX > 0;iX--) +#else +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = 0; iX < iCount; iX++) +#else + for (iX = 0; iX < pData->iPPLTcount; iX++) +#endif +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (paUsedentries [iX]) + pBuf->aTRNSentries [iX] = + (mng_uint8)(pBuf->aTRNSentries [iX] + + paAlphaentries [iX]); +#else + if (pData->paPPLTusedentries [iX]) + pBuf->aTRNSentries [iX] = + (mng_uint8)(pBuf->aTRNSentries [iX] + + pData->paPPLTalphaentries [iX]); +#endif + } + + break; + } + case MNG_DELTATYPE_REPLACERGBA : + { +#ifdef MNG_DECREMENT_LOOPS + for (; iX > 0;iX--) +#else +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = 0; iX < iCount; iX++) +#else + for (iX = 0; iX < pData->iPPLTcount; iX++) +#endif +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (paUsedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = paIndexentries [iX].iRed; + pBuf->aPLTEentries [iX].iGreen = paIndexentries [iX].iGreen; + pBuf->aPLTEentries [iX].iBlue = paIndexentries [iX].iBlue; + pBuf->aTRNSentries [iX] = paAlphaentries [iX]; + } +#else + if (pData->paPPLTusedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = pData->paPPLTindexentries [iX].iRed; + pBuf->aPLTEentries [iX].iGreen = pData->paPPLTindexentries [iX].iGreen; + pBuf->aPLTEentries [iX].iBlue = pData->paPPLTindexentries [iX].iBlue; + pBuf->aTRNSentries [iX] = pData->paPPLTalphaentries [iX]; + } +#endif + } + + break; + } + case MNG_DELTATYPE_DELTARGBA : + { +#ifdef MNG_DECREMENT_LOOPS + for (; iX > 0;iX--) +#else +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = 0; iX < iCount; iX++) +#else + for (iX = 0; iX < pData->iPPLTcount; iX++) +#endif +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (paUsedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = + (mng_uint8)(pBuf->aPLTEentries [iX].iRed + + paIndexentries [iX].iRed ); + pBuf->aPLTEentries [iX].iGreen = + (mng_uint8)(pBuf->aPLTEentries [iX].iGreen + + paIndexentries [iX].iGreen); + pBuf->aPLTEentries [iX].iBlue = + (mng_uint8)(pBuf->aPLTEentries [iX].iBlue + + paIndexentries [iX].iBlue ); + pBuf->aTRNSentries [iX] = + (mng_uint8)(pBuf->aTRNSentries [iX] + + paAlphaentries [iX]); + } +#else + if (pData->paPPLTusedentries [iX]) + { + pBuf->aPLTEentries [iX].iRed = + (mng_uint8)(pBuf->aPLTEentries [iX].iRed + + pData->paPPLTindexentries [iX].iRed ); + pBuf->aPLTEentries [iX].iGreen = + (mng_uint8)(pBuf->aPLTEentries [iX].iGreen + + pData->paPPLTindexentries [iX].iGreen); + pBuf->aPLTEentries [iX].iBlue = + (mng_uint8)(pBuf->aPLTEentries [iX].iBlue + + pData->paPPLTindexentries [iX].iBlue ); + pBuf->aTRNSentries [iX] = + (mng_uint8)(pBuf->aTRNSentries [iX] + + pData->paPPLTalphaentries [iX]); + } +#endif + } + + break; + } + } + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if ((iType != MNG_DELTATYPE_REPLACERGB) && (iType != MNG_DELTATYPE_DELTARGB)) +#else + if ((pData->iPPLTtype != MNG_DELTATYPE_REPLACERGB) && + (pData->iPPLTtype != MNG_DELTATYPE_DELTARGB ) ) +#endif + { + if (pBuf->bHasTRNS) + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (iCount > pBuf->iTRNScount) + pBuf->iTRNScount = iCount; +#else + if (pData->iPPLTcount > pBuf->iTRNScount) + pBuf->iTRNScount = pData->iPPLTcount; +#endif + } + else + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pBuf->iTRNScount = iCount; + pBuf->bHasTRNS = MNG_TRUE; +#else + pBuf->iTRNScount = pData->iPPLTcount; + pBuf->bHasTRNS = MNG_TRUE; +#endif + } + } + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if ((iType != MNG_DELTATYPE_REPLACEALPHA) && (iType != MNG_DELTATYPE_DELTAALPHA)) +#else + if ((pData->iPPLTtype != MNG_DELTATYPE_REPLACEALPHA) && + (pData->iPPLTtype != MNG_DELTATYPE_DELTAALPHA ) ) +#endif + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (iCount > pBuf->iPLTEcount) + pBuf->iPLTEcount = iCount; +#else + if (pData->iPPLTcount > pBuf->iPLTEcount) + pBuf->iPLTEcount = pData->iPPLTcount; +#endif + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PPLT, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_MAGN +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_magn (mng_datap pData, + mng_uint16 iFirstid, + mng_uint16 iLastid, + mng_uint8 iMethodX, + mng_uint16 iMX, + mng_uint16 iMY, + mng_uint16 iML, + mng_uint16 iMR, + mng_uint16 iMT, + mng_uint16 iMB, + mng_uint8 iMethodY) +#else +mng_retcode mng_process_display_magn (mng_datap pData) +#endif +{ + mng_uint16 iX; + mng_imagep pImage; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_START); +#endif + /* iterate the object-ids */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + for (iX = iFirstid; iX <= iLastid; iX++) +#else + for (iX = pData->iMAGNfirstid; iX <= pData->iMAGNlastid; iX++) +#endif + { + if (iX == 0) /* process object 0 ? */ + { + pImage = (mng_imagep)pData->pObjzero; + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage->iMAGN_MethodX = iMethodX; + pImage->iMAGN_MethodY = iMethodY; + pImage->iMAGN_MX = iMX; + pImage->iMAGN_MY = iMY; + pImage->iMAGN_ML = iML; + pImage->iMAGN_MR = iMR; + pImage->iMAGN_MT = iMT; + pImage->iMAGN_MB = iMB; +#else + pImage->iMAGN_MethodX = pData->iMAGNmethodX; + pImage->iMAGN_MethodY = pData->iMAGNmethodY; + pImage->iMAGN_MX = pData->iMAGNmX; + pImage->iMAGN_MY = pData->iMAGNmY; + pImage->iMAGN_ML = pData->iMAGNmL; + pImage->iMAGN_MR = pData->iMAGNmR; + pImage->iMAGN_MT = pData->iMAGNmT; + pImage->iMAGN_MB = pData->iMAGNmB; +#endif + } + else + { + pImage = mng_find_imageobject (pData, iX); + /* object exists & is not frozen ? */ + if ((pImage) && (!pImage->bFrozen)) + { /* previous magnification to be done ? */ + if ((pImage->iMAGN_MethodX) || (pImage->iMAGN_MethodY)) + { + mng_retcode iRetcode = mng_magnify_imageobject (pData, pImage); + if (iRetcode) /* on error bail out */ + return iRetcode; + } + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pImage->iMAGN_MethodX = iMethodX; + pImage->iMAGN_MethodY = iMethodY; + pImage->iMAGN_MX = iMX; + pImage->iMAGN_MY = iMY; + pImage->iMAGN_ML = iML; + pImage->iMAGN_MR = iMR; + pImage->iMAGN_MT = iMT; + pImage->iMAGN_MB = iMB; +#else + pImage->iMAGN_MethodX = pData->iMAGNmethodX; + pImage->iMAGN_MethodY = pData->iMAGNmethodY; + pImage->iMAGN_MX = pData->iMAGNmX; + pImage->iMAGN_MY = pData->iMAGNmY; + pImage->iMAGN_ML = pData->iMAGNmL; + pImage->iMAGN_MR = pData->iMAGNmR; + pImage->iMAGN_MT = pData->iMAGNmT; + pImage->iMAGN_MB = pData->iMAGNmB; +#endif + } + } + } + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pData->iMAGNfromid = iFirstid; + pData->iMAGNtoid = iLastid; + iX = iFirstid; +#else + pData->iMAGNfromid = pData->iMAGNfirstid; + pData->iMAGNtoid = pData->iMAGNlastid; + iX = pData->iMAGNfirstid; +#endif + /* iterate again for showing */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + while ((iX <= iLastid) && (!pData->bTimerset)) +#else + while ((iX <= pData->iMAGNlastid) && (!pData->bTimerset)) +#endif + { + pData->iMAGNcurrentid = iX; + + if (iX) /* only real objects ! */ + { + pImage = mng_find_imageobject (pData, iX); + /* object exists & is not frozen & + is visible & is viewable ? */ + if ((pImage) && (!pImage->bFrozen) && + (pImage->bVisible) && (pImage->bViewable)) + { + mng_retcode iRetcode = mng_display_image (pData, pImage, MNG_FALSE); + if (iRetcode) + return iRetcode; + } + } + + iX++; + } + + if (pData->bTimerset) /* broken ? */ + pData->iBreakpoint = 9; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_END); +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode mng_process_display_magn2 (mng_datap pData) +{ + mng_uint16 iX; + mng_imagep pImage; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_START); +#endif + + iX = pData->iMAGNcurrentid; + /* iterate again for showing */ + while ((iX <= pData->iMAGNtoid) && (!pData->bTimerset)) + { + pData->iMAGNcurrentid = iX; + + if (iX) /* only real objects ! */ + { + pImage = mng_find_imageobject (pData, iX); + /* object exists & is not frozen & + is visible & is viewable ? */ + if ((pImage) && (!pImage->bFrozen) && + (pImage->bVisible) && (pImage->bViewable)) + { + mng_retcode iRetcode = mng_display_image (pData, pImage, MNG_FALSE); + if (iRetcode) + return iRetcode; + } + } + + iX++; + } + + if (pData->bTimerset) /* broken ? */ + pData->iBreakpoint = 9; + else + pData->iBreakpoint = 0; /* not again ! */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_MAGN, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_PAST +#ifndef MNG_OPTIMIZE_DISPLAYCALLS +mng_retcode mng_process_display_past (mng_datap pData, + mng_uint16 iTargetid, + mng_uint8 iTargettype, + mng_int32 iTargetx, + mng_int32 iTargety, + mng_uint32 iCount, + mng_ptr pSources) +#else +mng_retcode mng_process_display_past (mng_datap pData) +#endif +{ + mng_retcode iRetcode = MNG_NOERROR; + mng_imagep pTargetimg; + mng_imagep pSourceimg; +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + mng_past_sourcep pSource = (mng_past_sourcep)pSources; +#else + mng_past_sourcep pSource = (mng_past_sourcep)pData->pPASTsources; +#endif + mng_uint32 iX = 0; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PAST, MNG_LC_START); +#endif + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (iTargetid) /* a real destination object ? */ +#else + if (pData->iPASTtargetid) /* a real destination object ? */ +#endif + { /* let's find it then */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pTargetimg = (mng_imagep)mng_find_imageobject (pData, iTargetid); +#else + pTargetimg = (mng_imagep)mng_find_imageobject (pData, pData->iPASTtargetid); +#endif + + if (!pTargetimg) /* if it doesn't exists; do a barf */ + MNG_ERROR (pData, MNG_OBJECTUNKNOWN); + /* it's gotta be abstract !!! */ + if (pTargetimg->pImgbuf->bConcrete) + MNG_ERROR (pData, MNG_OBJNOTABSTRACT); + /* we want 32-/64-bit RGBA to play with ! */ + if ((pTargetimg->pImgbuf->iBitdepth <= MNG_BITDEPTH_8) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_GRAY) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_RGB) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_INDEXED) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_GRAYA) ) + iRetcode = mng_promote_imageobject (pData, pTargetimg, MNG_BITDEPTH_8, + MNG_COLORTYPE_RGBA, + MNG_FILLMETHOD_LEFTBITREPLICATE); + else + if ((pTargetimg->pImgbuf->iBitdepth > MNG_BITDEPTH_8) && + ((pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_GRAY) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_RGB) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_GRAYA) ) ) + iRetcode = mng_promote_imageobject (pData, pTargetimg, MNG_BITDEPTH_16, + MNG_COLORTYPE_RGBA, + MNG_FILLMETHOD_LEFTBITREPLICATE); +#ifdef MNG_INCLUDE_JNG + else + if ((pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_JPEGGRAY) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_JPEGCOLOR) || + (pTargetimg->pImgbuf->iColortype == MNG_COLORTYPE_JPEGGRAYA) ) + iRetcode = mng_promote_imageobject (pData, pTargetimg, + pTargetimg->pImgbuf->iBitdepth, + MNG_COLORTYPE_JPEGCOLORA, + MNG_FILLMETHOD_LEFTBITREPLICATE); +#endif + + if (iRetcode) /* on error bail out */ + return iRetcode; + /* make it really abstract ? */ + if (!pTargetimg->pImgbuf->bCorrected) + { + iRetcode = mng_colorcorrect_object (pData, pTargetimg); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } + else + { /* pasting into object 0 !!! */ + pTargetimg = (mng_imagep)pData->pObjzero; + /* is it usable ??? */ + if ((pTargetimg->bClipped) && + (pTargetimg->iClipr > pTargetimg->iPosx) && + (pTargetimg->iClipb > pTargetimg->iPosy)) + { + /* make it 32-bit RGBA please !!! */ + iRetcode = mng_reset_object_details (pData, pTargetimg, + pTargetimg->iClipr - pTargetimg->iPosx, + pTargetimg->iClipb - pTargetimg->iPosy, + MNG_BITDEPTH_8, MNG_COLORTYPE_RGBA, + 0, 0, 0, MNG_FALSE); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + else + pTargetimg = MNG_NULL; /* clipped beyond visibility ! */ + } + + if (pTargetimg) /* usable destination ? */ + { + mng_int32 iSourceY; + mng_int32 iSourceYinc; + mng_int32 iSourcerowsize; + mng_int32 iSourcesamples; + mng_bool bSourceRGBA16; + mng_int32 iTargetY; + mng_int32 iTargetrowsize; + mng_int32 iTargetsamples; + mng_bool bTargetRGBA16 = MNG_FALSE; + mng_int32 iTemprowsize; + mng_imagedatap pBuf; +#ifndef MNG_SKIPCHUNK_MAGN + /* needs magnification ? */ + if ((pTargetimg->iMAGN_MethodX) || (pTargetimg->iMAGN_MethodY)) + iRetcode = mng_magnify_imageobject (pData, pTargetimg); +#endif + + if (!iRetcode) /* still ok ? */ + { + bTargetRGBA16 = (mng_bool)(pTargetimg->pImgbuf->iBitdepth > 8); + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + switch (iTargettype) /* determine target x/y */ +#else + switch (pData->iPASTtargettype) /* determine target x/y */ +#endif + { + case 0 : { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pData->iPastx = iTargetx; + pData->iPasty = iTargety; +#else + pData->iPastx = pData->iPASTtargetx; + pData->iPasty = pData->iPASTtargety; +#endif + break; + } + + case 1 : { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pData->iPastx = pTargetimg->iPastx + iTargetx; + pData->iPasty = pTargetimg->iPasty + iTargety; +#else + pData->iPastx = pTargetimg->iPastx + pData->iPASTtargetx; + pData->iPasty = pTargetimg->iPasty + pData->iPASTtargety; +#endif + break; + } + + case 2 : { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pData->iPastx += iTargetx; + pData->iPasty += iTargety; +#else + pData->iPastx += pData->iPASTtargetx; + pData->iPasty += pData->iPASTtargety; +#endif + break; + } + } + /* save for next time ... */ + pTargetimg->iPastx = pData->iPastx; + pTargetimg->iPasty = pData->iPasty; + /* address destination for row-routines */ + pData->pStoreobj = (mng_objectp)pTargetimg; + pData->pStorebuf = (mng_objectp)pTargetimg->pImgbuf; + } + /* process the sources one by one */ +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + while ((!iRetcode) && (iX < iCount)) +#else + while ((!iRetcode) && (iX < pData->iPASTcount)) +#endif + { /* find the little bastards first */ + pSourceimg = (mng_imagep)mng_find_imageobject (pData, pSource->iSourceid); + /* exists and viewable? */ + if ((pSourceimg) && (pSourceimg->bViewable)) + { /* needs magnification ? */ +#ifndef MNG_SKIPCHUNK_MAGN + if ((pSourceimg->iMAGN_MethodX) || (pSourceimg->iMAGN_MethodY)) + iRetcode = mng_magnify_imageobject (pData, pSourceimg); +#endif + + if (!iRetcode) /* still ok ? */ + { + pBuf = (mng_imagedatap)pSourceimg->pImgbuf; + /* address source for row-routines */ + pData->pRetrieveobj = (mng_objectp)pSourceimg; + + pData->iPass = -1; /* init row-processing variables */ + pData->iRowinc = 1; + pData->iColinc = 1; + pData->iPixelofs = 0; + iSourcesamples = (mng_int32)pBuf->iWidth; + iSourcerowsize = pBuf->iRowsize; + bSourceRGBA16 = (mng_bool)(pBuf->iBitdepth > 8); + /* make sure the delta-routines do the right thing */ + pData->iDeltatype = MNG_DELTATYPE_BLOCKPIXELREPLACE; + + switch (pBuf->iColortype) + { + case 0 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_g16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_g8; + + pData->bIsOpaque = (mng_bool)(!pBuf->bHasTRNS); + break; + } + + case 2 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8; + + pData->bIsOpaque = (mng_bool)(!pBuf->bHasTRNS); + break; + } + + + case 3 : { pData->fRetrieverow = (mng_fptr)mng_retrieve_idx8; + pData->bIsOpaque = (mng_bool)(!pBuf->bHasTRNS); + break; + } + + + case 4 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + + case 6 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + case 8 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_g16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_g8; + + pData->bIsOpaque = MNG_TRUE; + break; + } + + case 10 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgb8; + + pData->bIsOpaque = MNG_TRUE; + break; + } + + + case 12 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_ga8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + + + case 14 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bSourceRGBA16) + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba16; + else +#endif + pData->fRetrieverow = (mng_fptr)mng_retrieve_rgba8; + + pData->bIsOpaque = MNG_FALSE; + break; + } + } + /* determine scaling */ +#ifndef MNG_NO_16BIT_SUPPORT +#ifndef MNG_NO_DELTA_PNG + if ((!bSourceRGBA16) && (bTargetRGBA16)) + pData->fScalerow = (mng_fptr)mng_scale_rgba8_rgba16; + else + if ((bSourceRGBA16) && (!bTargetRGBA16)) + pData->fScalerow = (mng_fptr)mng_scale_rgba16_rgba8; + else +#endif +#endif + pData->fScalerow = MNG_NULL; + + /* default no color-correction */ + pData->fCorrectrow = MNG_NULL; + +#if defined(MNG_FULL_CMS) /* determine color-management routine */ + iRetcode = mng_init_full_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#elif defined(MNG_GAMMA_ONLY) + iRetcode = mng_init_gamma_only (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#elif defined(MNG_APP_CMS) + iRetcode = mng_init_app_cms (pData, MNG_FALSE, MNG_FALSE, MNG_TRUE); +#endif + } + + if (!iRetcode) /* still ok ? */ + { + pData->fFliprow = MNG_NULL; /* no flipping or tiling by default */ + pData->fTilerow = MNG_NULL; + /* but perhaps we do have to ... */ + switch (pSource->iOrientation) + { + case 2 : ; + case 4 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bTargetRGBA16) + pData->fFliprow = (mng_fptr)mng_flip_rgba16; + else +#endif + pData->fFliprow = (mng_fptr)mng_flip_rgba8; + break; + } + + case 8 : { +#ifndef MNG_NO_16BIT_SUPPORT + if (bTargetRGBA16) + pData->fTilerow = (mng_fptr)mng_tile_rgba16; + else +#endif + pData->fTilerow = (mng_fptr)mng_tile_rgba8; + break; + } + } + /* determine composition routine */ + /* note that we're abusing the delta-routine setup !!! */ + switch (pSource->iComposition) + { + case 0 : { /* composite over */ +#ifndef MNG_NO_16BIT_SUPPORT + if (bTargetRGBA16) + pData->fDeltarow = (mng_fptr)mng_composeover_rgba16; + else +#endif + pData->fDeltarow = (mng_fptr)mng_composeover_rgba8; + break; + } + + case 1 : { /* replace */ +#ifndef MNG_NO_16BIT_SUPPORT + if (bTargetRGBA16) + pData->fDeltarow = (mng_fptr)mng_delta_rgba16_rgba16; + else +#endif + pData->fDeltarow = (mng_fptr)mng_delta_rgba8_rgba8; + break; + } + + case 2 : { /* composite under */ +#ifndef MNG_NO_16BIT_SUPPORT + if (bTargetRGBA16) + pData->fDeltarow = (mng_fptr)mng_composeunder_rgba16; + else +#endif + pData->fDeltarow = (mng_fptr)mng_composeunder_rgba8; + break; + } + } + /* determine offsets & clipping */ + if (pSource->iOffsettype == 1) + { + pData->iDestl = pData->iPastx + pSource->iOffsetx; + pData->iDestt = pData->iPasty + pSource->iOffsety; + } + else + { + pData->iDestl = pSource->iOffsetx; + pData->iDestt = pSource->iOffsety; + } + + pData->iDestr = (mng_int32)pTargetimg->pImgbuf->iWidth; + pData->iDestb = (mng_int32)pTargetimg->pImgbuf->iHeight; + /* take the source dimension into account ? */ + if (pSource->iOrientation != 8) + { + pData->iDestr = MIN_COORD (pData->iDestr, pData->iDestl + (mng_int32)pBuf->iWidth); + pData->iDestb = MIN_COORD (pData->iDestb, pData->iDestt + (mng_int32)pBuf->iHeight); + } + /* source clipping */ + if (pSource->iBoundarytype == 1) + { + if (pData->iDestl < pData->iPastx + pSource->iBoundaryl) + pData->iSourcel = pData->iPastx + pSource->iBoundaryl - pData->iDestl; + else + pData->iSourcel = 0; + + if (pData->iDestt < pData->iPasty + pSource->iBoundaryt) + pData->iSourcet = pData->iPasty + pSource->iBoundaryt - pData->iDestt; + else + pData->iSourcet = 0; + + pData->iDestl = MAX_COORD (pData->iDestl, pData->iPastx + pSource->iBoundaryl); + pData->iDestt = MAX_COORD (pData->iDestt, pData->iPasty + pSource->iBoundaryt); + pData->iDestr = MIN_COORD (pData->iDestr, pData->iPastx + pSource->iBoundaryr); + pData->iDestb = MIN_COORD (pData->iDestb, pData->iPasty + pSource->iBoundaryb); + } + else + { + if (pData->iDestl < pSource->iBoundaryl) + pData->iSourcel = pSource->iBoundaryl - pData->iDestl; + else + pData->iSourcel = 0; + + if (pData->iDestt < pSource->iBoundaryt) + pData->iSourcet = pSource->iBoundaryt - pData->iDestt; + else + pData->iSourcet = 0; + + pData->iDestl = MAX_COORD (pData->iDestl, pSource->iBoundaryl); + pData->iDestt = MAX_COORD (pData->iDestt, pSource->iBoundaryt); + pData->iDestr = MIN_COORD (pData->iDestr, pSource->iBoundaryr); + pData->iDestb = MIN_COORD (pData->iDestb, pSource->iBoundaryb); + } + + if (pData->iSourcel) /* indent source ? */ + { +#ifndef MNG_NO_16BIT_SUPPORT + if (bTargetRGBA16) /* abuse tiling routine to shift source-pixels */ + pData->fTilerow = (mng_fptr)mng_tile_rgba16; + else +#endif + pData->fTilerow = (mng_fptr)mng_tile_rgba8; + } + /* anything to display ? */ + if ((pData->iDestl <= pData->iDestr) && (pData->iDestt <= pData->iDestb)) + { /* init variables for the loop */ + if ((pSource->iOrientation == 2) || (pSource->iOrientation == 6)) + { + iSourceY = (mng_int32)pBuf->iHeight - 1 - pData->iSourcet; + iSourceYinc = -1; + } + else + { + iSourceY = pData->iSourcet; + iSourceYinc = 1; + } + + iTargetY = pData->iDestt; + pData->iCol = pData->iDestl; + + iTargetsamples = pData->iDestr - pData->iDestl; + +#ifndef MNG_NO_16BIT_SUPPORT + if (bTargetRGBA16) + iTargetrowsize = (iTargetsamples << 3); + else +#endif + iTargetrowsize = (iTargetsamples << 2); + + /* get temporary work-buffers */ + if (iSourcerowsize > iTargetrowsize) + iTemprowsize = iSourcerowsize << 1; + else + iTemprowsize = iTargetrowsize << 1; + MNG_ALLOC (pData, pData->pRGBArow, iTemprowsize); + MNG_ALLOC (pData, pData->pWorkrow, iTemprowsize); + + while ((!iRetcode) && (iTargetY < pData->iDestb)) + { /* get a row */ + pData->iRow = iSourceY; + pData->iRowsamples = iSourcesamples; + pData->iRowsize = iSourcerowsize; + pData->bIsRGBA16 = bSourceRGBA16; + iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData); + /* scale it (if necessary) */ + if ((!iRetcode) && (pData->fScalerow)) + iRetcode = ((mng_scalerow)pData->fScalerow) (pData); + + pData->bIsRGBA16 = bTargetRGBA16; + /* color correction (if necessary) */ + if ((!iRetcode) && (pData->fCorrectrow)) + iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); + /* flipping (if necessary) */ + if ((!iRetcode) && (pData->fFliprow)) + iRetcode = ((mng_fliprow)pData->fFliprow) (pData); + /* tiling (if necessary) */ + if ((!iRetcode) && (pData->fTilerow)) + iRetcode = ((mng_tilerow)pData->fTilerow) (pData); + + if (!iRetcode) /* and paste..... */ + { + pData->iRow = iTargetY; + pData->iRowsamples = iTargetsamples; + pData->iRowsize = iTargetrowsize; + iRetcode = ((mng_deltarow)pData->fDeltarow) (pData); + } + + iSourceY += iSourceYinc; /* and next line */ + + if (iSourceY < 0) + iSourceY = (mng_int32)pBuf->iHeight - 1; + else + if (iSourceY >= (mng_int32)pBuf->iHeight) + iSourceY = 0; + + iTargetY++; + } + /* drop the temporary row-buffer */ + MNG_FREEX (pData, pData->pWorkrow, iTemprowsize); + MNG_FREEX (pData, pData->pRGBArow, iTemprowsize); + } + +#if defined(MNG_FULL_CMS) /* cleanup cms stuff */ + if (!iRetcode) + iRetcode = mng_clear_cms (pData); +#endif + } + + pSource++; /* neeeeext */ + iX++; + } + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + if (!iTargetid) /* did we paste into object 0 ? */ +#else + if (!pData->iPASTtargetid) /* did we paste into object 0 ? */ +#endif + { /* display it then ! */ + iRetcode = mng_display_image (pData, pTargetimg, MNG_FALSE); + if (iRetcode) /* on error bail out */ + return iRetcode; + } + else + { /* target is visible & viewable ? */ + if ((pTargetimg->bVisible) && (pTargetimg->bViewable)) + { + iRetcode = mng_display_image (pData, pTargetimg, MNG_FALSE); + if (iRetcode) + return iRetcode; + } + } + } + + if (pData->bTimerset) /* broken ? */ + { +#ifndef MNG_OPTIMIZE_DISPLAYCALLS + pData->iPASTid = iTargetid; +#else + pData->iPASTid = pData->iPASTtargetid; +#endif + pData->iBreakpoint = 11; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PAST, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SKIPCHUNK_PAST */ + +/* ************************************************************************** */ + +#ifndef MNG_SKIPCHUNK_PAST +mng_retcode mng_process_display_past2 (mng_datap pData) +{ + mng_retcode iRetcode; + mng_imagep pTargetimg; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PAST, MNG_LC_START); +#endif + + if (pData->iPASTid) /* a real destination object ? */ + pTargetimg = (mng_imagep)mng_find_imageobject (pData, pData->iPASTid); + else /* otherwise object 0 */ + pTargetimg = (mng_imagep)pData->pObjzero; + + iRetcode = mng_display_image (pData, pTargetimg, MNG_FALSE); + if (iRetcode) + return iRetcode; + + pData->iBreakpoint = 0; /* only once */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_PROCESS_DISPLAY_PAST, MNG_LC_END); +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SKIPCHUNK_PAST */ + +/* ************************************************************************** */ + +#endif /* MNG_INCLUDE_DISPLAY_PROCS */ + +/* ************************************************************************** */ +/* * end of file * */ +/* ************************************************************************** */ + + |