From 3e081dbc87eb3872197f56ddea8f55edf9c8aa3b Mon Sep 17 00:00:00 2001 From: Eirik Aavitsland Date: Wed, 10 Oct 2018 15:23:51 +0200 Subject: Remove bundled, unmaintained libmng source code [ChangeLog][Third-Party Code] The unmaintained bundled libmng has been removed. Building the mng handler will require libmng to be present as a system or external library. Change-Id: I4a4805fa3f3088b5d581b92bfeabba7978bac5f7 Reviewed-by: Thiago Macieira --- src/3rdparty/libmng/libmng_filter.c | 978 ------------------------------------ 1 file changed, 978 deletions(-) delete mode 100644 src/3rdparty/libmng/libmng_filter.c (limited to 'src/3rdparty/libmng/libmng_filter.c') diff --git a/src/3rdparty/libmng/libmng_filter.c b/src/3rdparty/libmng/libmng_filter.c deleted file mode 100644 index ed69a75..0000000 --- a/src/3rdparty/libmng/libmng_filter.c +++ /dev/null @@ -1,978 +0,0 @@ -/* ************************************************************************** */ -/* * For conditions of distribution and use, * */ -/* * see copyright notice in libmng.h * */ -/* ************************************************************************** */ -/* * * */ -/* * project : libmng * */ -/* * file : libmng_filter.c copyright (c) 2000-2004 G.Juyn * */ -/* * version : 1.0.9 * */ -/* * * */ -/* * purpose : Filtering routines (implementation) * */ -/* * * */ -/* * author : G.Juyn * */ -/* * * */ -/* * comment : implementation of the filtering routines * */ -/* * * */ -/* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */ -/* * - changed strict-ANSI stuff * */ -/* * 0.5.1 - 05/12/2000 - G.Juyn * */ -/* * - changed trace to macro for callback error-reporting * */ -/* * * */ -/* * 0.9.2 - 08/05/2000 - G.Juyn * */ -/* * - changed file-prefixes * */ -/* * * */ -/* * 0.9.3 - 09/07/2000 - G.Juyn * */ -/* * - added support for new filter_types * */ -/* * * */ -/* * 1.0.5 - 08/07/2002 - G.Juyn * */ -/* * - added test-option for PNG filter method 193 (=no filter) * */ -/* * 1.0.5 - 08/19/2002 - G.Juyn * */ -/* * - B597134 - libmng pollutes the linker namespace * */ -/* * * */ -/* * 1.0.6 - 07/07/2003 - G.R-P * */ -/* * - reversed some loops to use decrementing counter * */ -/* * * */ -/* * 1.0.9 - 12/20/2004 - G.Juyn * */ -/* * - cleaned up macro-invocations (thanks to D. Airlie) * */ -/* * * */ -/* ************************************************************************** */ - -#include "libmng.h" -#include "libmng_data.h" -#include "libmng_error.h" -#include "libmng_trace.h" -#ifdef __BORLANDC__ -#pragma hdrstop -#endif -#include "libmng_filter.h" - -#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) -#pragma option -A /* force ANSI-C */ -#endif - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_FILTERS - -/* ************************************************************************** */ - -MNG_LOCAL mng_retcode filter_sub (mng_datap pData) -{ - mng_uint32 iBpp; - mng_uint8p pRawx; - mng_uint8p pRawx_prev; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_SUB, MNG_LC_START); -#endif - - iBpp = pData->iFilterbpp; - pRawx = pData->pWorkrow + pData->iPixelofs + iBpp; - pRawx_prev = pData->pWorkrow + pData->iPixelofs; - - for (iX = iBpp; iX < pData->iRowsize; iX++) - { - *pRawx = (mng_uint8)(*pRawx + *pRawx_prev); - pRawx++; - pRawx_prev++; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_SUB, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -MNG_LOCAL mng_retcode filter_up (mng_datap pData) -{ - mng_uint8p pRawx; - mng_uint8p pPriorx; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_UP, MNG_LC_START); -#endif - - pRawx = pData->pWorkrow + pData->iPixelofs; - pPriorx = pData->pPrevrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsize - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsize; iX++) -#endif - { - *pRawx = (mng_uint8)(*pRawx + *pPriorx); - pRawx++; - pPriorx++; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_UP, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -MNG_LOCAL mng_retcode filter_average (mng_datap pData) -{ - mng_int32 iBpp; - mng_uint8p pRawx; - mng_uint8p pRawx_prev; - mng_uint8p pPriorx; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_AVERAGE, MNG_LC_START); -#endif - - iBpp = pData->iFilterbpp; - pRawx = pData->pWorkrow + pData->iPixelofs; - pPriorx = pData->pPrevrow + pData->iPixelofs; - pRawx_prev = pData->pWorkrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = iBpp - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < iBpp; iX++) -#endif - { - *pRawx = (mng_uint8)(*pRawx + ((*pPriorx) >> 1)); - pRawx++; - pPriorx++; - } - - for (iX = iBpp; iX < pData->iRowsize; iX++) - { - *pRawx = (mng_uint8)(*pRawx + ((*pRawx_prev + *pPriorx) >> 1)); - pRawx++; - pPriorx++; - pRawx_prev++; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_AVERAGE, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -MNG_LOCAL mng_retcode filter_paeth (mng_datap pData) -{ - mng_int32 iBpp; - mng_uint8p pRawx; - mng_uint8p pRawx_prev; - mng_uint8p pPriorx; - mng_uint8p pPriorx_prev; - mng_int32 iX; - mng_uint32 iA, iB, iC; - mng_uint32 iP; - mng_uint32 iPa, iPb, iPc; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_PAETH, MNG_LC_START); -#endif - - iBpp = pData->iFilterbpp; - pRawx = pData->pWorkrow + pData->iPixelofs; - pPriorx = pData->pPrevrow + pData->iPixelofs; - pRawx_prev = pData->pWorkrow + pData->iPixelofs; - pPriorx_prev = pData->pPrevrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = iBpp - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < iBpp; iX++) -#endif - { - *pRawx = (mng_uint8)(*pRawx + *pPriorx); - - pRawx++; - pPriorx++; - } - - for (iX = iBpp; iX < pData->iRowsize; iX++) - { - iA = (mng_uint32)*pRawx_prev; - iB = (mng_uint32)*pPriorx; - iC = (mng_uint32)*pPriorx_prev; - iP = iA + iB - iC; - iPa = abs (iP - iA); - iPb = abs (iP - iB); - iPc = abs (iP - iC); - - if ((iPa <= iPb) && (iPa <= iPc)) - *pRawx = (mng_uint8)(*pRawx + iA); - else - if (iPb <= iPc) - *pRawx = (mng_uint8)(*pRawx + iB); - else - *pRawx = (mng_uint8)(*pRawx + iC); - - pRawx++; - pPriorx++; - pRawx_prev++; - pPriorx_prev++; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_PAETH, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_filter_a_row (mng_datap pData) -{ - mng_retcode iRetcode; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_A_ROW, MNG_LC_START); -#endif - - switch (*(pData->pWorkrow + pData->iFilterofs)) - { - case 1 : { - iRetcode = filter_sub (pData); - break; - } - case 2 : { - iRetcode = filter_up (pData); - break; - } - case 3 : { - iRetcode = filter_average (pData); - break; - } - case 4 : { - iRetcode = filter_paeth (pData); - break; - } - - default : iRetcode = MNG_INVALIDFILTER; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_FILTER_A_ROW, MNG_LC_END); -#endif - - return iRetcode; -} - -/* ************************************************************************** */ -/* ************************************************************************** */ - -#ifdef FILTER192 -mng_retcode mng_init_rowdiffering (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_INIT_ROWDIFFERING, MNG_LC_START); -#endif - - if (pData->iFilter == 0xC0) /* has leveling parameters ? */ - { - switch (pData->iColortype) /* salvage leveling parameters */ - { - case 0 : { /* gray */ - if (pData->iBitdepth <= 8) - pData->iLevel0 = (mng_uint16)*pData->pWorkrow; - else - pData->iLevel0 = mng_get_uint16 (pData->pWorkrow); - - break; - } - case 2 : { /* rgb */ - if (pData->iBitdepth <= 8) - { - pData->iLevel0 = (mng_uint16)*pData->pWorkrow; - pData->iLevel1 = (mng_uint16)*(pData->pWorkrow+1); - pData->iLevel2 = (mng_uint16)*(pData->pWorkrow+2); - } - else - { - pData->iLevel0 = mng_get_uint16 (pData->pWorkrow); - pData->iLevel1 = mng_get_uint16 (pData->pWorkrow+2); - pData->iLevel2 = mng_get_uint16 (pData->pWorkrow+4); - } - - break; - } - case 3 : { /* indexed */ - pData->iLevel0 = (mng_uint16)*pData->pWorkrow; - break; - } - case 4 : { /* gray+alpha */ - if (pData->iBitdepth <= 8) - { - pData->iLevel0 = (mng_uint16)*pData->pWorkrow; - pData->iLevel1 = (mng_uint16)*(pData->pWorkrow+1); - } - else - { - pData->iLevel0 = mng_get_uint16 (pData->pWorkrow); - pData->iLevel1 = mng_get_uint16 (pData->pWorkrow+2); - } - - break; - } - case 6 : { /* rgb+alpha */ - if (pData->iBitdepth <= 8) - { - pData->iLevel0 = (mng_uint16)*pData->pWorkrow; - pData->iLevel1 = (mng_uint16)*(pData->pWorkrow+1); - pData->iLevel2 = (mng_uint16)*(pData->pWorkrow+2); - pData->iLevel3 = (mng_uint16)*(pData->pWorkrow+3); - } - else - { - pData->iLevel0 = mng_get_uint16 (pData->pWorkrow); - pData->iLevel1 = mng_get_uint16 (pData->pWorkrow+2); - pData->iLevel2 = mng_get_uint16 (pData->pWorkrow+4); - pData->iLevel3 = mng_get_uint16 (pData->pWorkrow+6); - } - - break; - } - } - } - /* shift the entire row back in place */ - pRawi = pData->pWorkrow + pData->iFilterofs; - pRawo = pData->pWorkrow; - - for (iX = 0; iX < pData->iRowsize + pData->iPixelofs - pData->iFilterofs; iX++) - *pRawo++ = *pRawi++; - - pData->iFilterofs = 0; /* indicate so ! */ - -#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_INIT_ROWDIFFERING, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_g1 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G1, MNG_LC_START); -#endif - - if (pData->iLevel0 & 0x01) /* is it uneven level ? */ - { - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - /* just invert every bit */ -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsize - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsize; iX++) -#endif - *pRawo++ = (mng_uint8)(~(*pRawi++)); - - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G1, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_g2 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - mng_int32 iC, iS; - mng_uint8 iB, iN, iQ; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G2, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - iC = 0; - iB = 0; - iN = 0; - iS = 0; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - if (!iC) - { - iC = 4; - iB = *pRawi++; - iN = 0; - iS = 8; - } - - iS -= 2; - iQ = (mng_uint8)(((iB >> iS) + pData->iLevel0) & 0x03); - iN = (mng_uint8)((iN << 2) + iQ); - iC--; - - if (!iC) - *pRawo++ = iN; - - } - - if (iC) - *pRawo = (mng_uint8)(iN << iS); - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G2, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_g4 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - mng_int32 iC, iS; - mng_uint8 iB, iN, iQ; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G4, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - iC = 0; - iB = 0; - iN = 0; - iS = 0; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - if (!iC) - { - iC = 2; - iB = *pRawi++; - iN = 0; - iS = 8; - } - - iS -= 4; - iQ = (mng_uint8)(((iB >> iS) + pData->iLevel0) & 0x0F); - iN = (mng_uint8)((iN << 4) + iQ); - iC--; - - if (!iC) - *pRawo++ = iN; - - } - - if (iC) - *pRawo = (mng_uint8)(iN << iS); - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G4, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_g8 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G8, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *pRawo++ = (mng_uint8)(((mng_uint16)*pRawi + pData->iLevel0) & 0xFF); - - pRawi++; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G8, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_g16 (mng_datap pData) -{ - mng_uint16p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G16, MNG_LC_START); -#endif - - pRawi = (mng_uint16p)(pData->pWorkrow + pData->iPixelofs); - pRawo = (mng_uint16p)(pData->pPrevrow + pData->iPixelofs); - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *pRawo++ = (mng_uint16)(((mng_uint32)*pRawi + (mng_uint32)pData->iLevel0) & 0xFFFF); - - pRawi++; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_G16, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_rgb8 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGB8, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *(pRawo+1) = (mng_uint8)(((mng_uint16)*(pRawi+1) + pData->iLevel1) & 0xFF); - *pRawo = (mng_uint8)(((mng_uint16)*pRawi + pData->iLevel0 + - (mng_uint16)*(pRawo+1)) & 0xFF); - *(pRawo+2) = (mng_uint8)(((mng_uint16)*(pRawi+2) + pData->iLevel2 + - (mng_uint16)*(pRawo+1)) & 0xFF); - - pRawi += 3; - pRawo += 3; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGB8, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_rgb16 (mng_datap pData) -{ - mng_uint16p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGB16, MNG_LC_START); -#endif - - pRawi = (mng_uint16p)(pData->pWorkrow + pData->iPixelofs); - pRawo = (mng_uint16p)(pData->pPrevrow + pData->iPixelofs); - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *(pRawo+1) = (mng_uint16)(((mng_uint32)*(pRawi+1) + (mng_uint32)pData->iLevel1) & 0xFFFF); - *pRawo = (mng_uint16)(((mng_uint32)*pRawi + (mng_uint32)pData->iLevel0 + - (mng_uint32)*(pRawo+1)) & 0xFFFF); - *(pRawo+2) = (mng_uint16)(((mng_uint32)*(pRawi+2) + (mng_uint32)pData->iLevel2 + - (mng_uint32)*(pRawo+1)) & 0xFFFF); - - pRawi += 3; - pRawo += 3; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGB16, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_idx1 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX1, MNG_LC_START); -#endif - - if (pData->iLevel0 & 0x01) /* is it uneven level ? */ - { - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - /* just invert every bit */ -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsize - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsize; iX++) -#endif - *pRawo++ = (mng_uint8)(~(*pRawi++)); - - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX1, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_idx2 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - mng_int32 iC, iS; - mng_uint8 iB, iN, iQ; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX2, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - iC = 0; - iB = 0; - iN = 0; - iS = 0; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - if (!iC) - { - iC = 4; - iB = *pRawi++; - iN = 0; - iS = 8; - } - - iS -= 2; - iQ = (mng_uint8)(((iB >> iS) + pData->iLevel0) & 0x03); - iN = (mng_uint8)((iN << 2) + iQ); - iC--; - - if (!iC) - *pRawo++ = iN; - - } - - if (iC) - *pRawo = (mng_uint8)(iN << iS); - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX2, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_idx4 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - mng_int32 iC, iS; - mng_uint8 iB, iN, iQ; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX4, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - iC = 0; - iB = 0; - iN = 0; - iS = 0; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - if (!iC) - { - iC = 2; - iB = *pRawi++; - iN = 0; - iS = 8; - } - - iS -= 4; - iQ = (mng_uint8)(((iB >> iS) + pData->iLevel0) & 0x0F); - iN = (mng_uint8)((iN << 4) + iQ); - iC--; - - if (!iC) - *pRawo++ = iN; - - } - - if (iC) - *pRawo = (mng_uint8)(iN << iS); - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX4, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_idx8 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX8, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *pRawo++ = (mng_uint8)(((mng_uint16)*pRawi + pData->iLevel0) & 0xFF); - - pRawi++; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_IDX8, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_ga8 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_GA8, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *pRawo = (mng_uint8)(((mng_uint16)*pRawi + pData->iLevel0) & 0xFF); - *(pRawo+1) = (mng_uint8)(((mng_uint16)*(pRawi+1) + pData->iLevel1) & 0xFF); - - pRawi += 2; - pRawo += 2; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_GA8, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_ga16 (mng_datap pData) -{ - mng_uint16p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_GA16, MNG_LC_START); -#endif - - pRawi = (mng_uint16p)(pData->pWorkrow + pData->iPixelofs); - pRawo = (mng_uint16p)(pData->pPrevrow + pData->iPixelofs); - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *pRawo = (mng_uint16)(((mng_uint32)*pRawi + (mng_uint32)pData->iLevel0) & 0xFFFF); - *(pRawo+1) = (mng_uint16)(((mng_uint32)*(pRawi+1) + (mng_uint32)pData->iLevel1) & 0xFFFF); - - pRawi += 2; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_GA16, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_rgba8 (mng_datap pData) -{ - mng_uint8p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGBA8, MNG_LC_START); -#endif - - pRawi = pData->pWorkrow + pData->iPixelofs; - pRawo = pData->pPrevrow + pData->iPixelofs; - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *(pRawo+1) = (mng_uint8)(((mng_uint16)*(pRawi+1) + pData->iLevel1) & 0xFF); - *pRawo = (mng_uint8)(((mng_uint16)*pRawi + pData->iLevel0 + - (mng_uint16)*(pRawo+1)) & 0xFF); - *(pRawo+2) = (mng_uint8)(((mng_uint16)*(pRawi+2) + pData->iLevel2 + - (mng_uint16)*(pRawo+1)) & 0xFF); - *(pRawo+3) = (mng_uint8)(((mng_uint16)*(pRawi+3) + pData->iLevel3) & 0xFF); - - pRawi += 4; - pRawo += 4; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGBA8, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mng_differ_rgba16 (mng_datap pData) -{ - mng_uint16p pRawi, pRawo; - mng_int32 iX; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGBA16, MNG_LC_START); -#endif - - pRawi = (mng_uint16p)(pData->pWorkrow + pData->iPixelofs); - pRawo = (mng_uint16p)(pData->pPrevrow + pData->iPixelofs); - -#ifdef MNG_DECREMENT_LOOPS - for (iX = pData->iRowsamples - 1; iX >= 0; iX--) -#else - for (iX = 0; iX < pData->iRowsamples; iX++) -#endif - { - *(pRawo+1) = (mng_uint16)(((mng_uint32)*(pRawi+1) + (mng_uint32)pData->iLevel1) & 0xFFFF); - *pRawo = (mng_uint16)(((mng_uint32)*pRawi + (mng_uint32)pData->iLevel0 + - (mng_uint32)*(pRawo+1)) & 0xFFFF); - *(pRawo+2) = (mng_uint16)(((mng_uint32)*(pRawi+2) + (mng_uint32)pData->iLevel2 + - (mng_uint32)*(pRawo+1)) & 0xFFFF); - *(pRawo+3) = (mng_uint16)(((mng_uint32)*(pRawi+3) + (mng_uint32)pData->iLevel3) & 0xFFFF); - - pRawi += 4; - pRawo += 4; - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_DIFFER_RGBA16, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -#endif /* FILTER192 */ - -/* ************************************************************************** */ - -#endif /* MNG_INCLUDE_FILTERS */ - -/* ************************************************************************** */ -/* * end of file * */ -/* ************************************************************************** */ - -- cgit v1.2.3