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Diffstat (limited to 'tqtinterface/qt4/src/3rdparty/libmng/libmng_filter.c')
-rw-r--r--tqtinterface/qt4/src/3rdparty/libmng/libmng_filter.c890
1 files changed, 0 insertions, 890 deletions
diff --git a/tqtinterface/qt4/src/3rdparty/libmng/libmng_filter.c b/tqtinterface/qt4/src/3rdparty/libmng/libmng_filter.c
deleted file mode 100644
index a055f5c..0000000
--- a/tqtinterface/qt4/src/3rdparty/libmng/libmng_filter.c
+++ /dev/null
@@ -1,890 +0,0 @@
-/* ************************************************************************** */
-/* * For conditions of distribution and use, * */
-/* * see copyright notice in libmng.h * */
-/* ************************************************************************** */
-/* * * */
-/* * project : libmng * */
-/* * file : libmng_filter.c copyright (c) 2000 G.Juyn * */
-/* * version : 1.0.0 * */
-/* * * */
-/* * purpose : Filtering routines (implementation) * */
-/* * * */
-/* * author : G.Juyn * */
-/* * web : http://www.3-t.com * */
-/* * email : mailto:info@3-t.com * */
-/* * * */
-/* * 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 * */
-/* * * */
-/* ************************************************************************** */
-
-#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_retcode 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;
-}
-
-/* ************************************************************************** */
-
-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_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;
-
- for (iX = 0; iX < pData->iRowsize; iX++)
- {
- *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_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;
-
- for (iX = 0; iX < iBpp; iX++)
- {
- *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_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;
-
- for (iX = 0; iX < iBpp; iX++)
- {
- *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 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 & 0x40) /* 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 ! */
-
- if (pData->iFilter & 0x01) /* no adaptive filtering ? */
- pData->iPixelofs = pData->iFilterofs;
- else
- 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 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 */
- for (iX = 0; iX < pData->iRowsize; iX++)
- *pRawo++ = (mng_uint8)(~(*pRawi++));
-
- }
-
-#ifdef MNG_SUPPORT_TRACE
- MNG_TRACE (pData, MNG_FN_DIFFER_G1, MNG_LC_END)
-#endif
-
- return MNG_NOERROR;
-}
-
-/* ************************************************************************** */
-
-mng_retcode 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- 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 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- 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 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *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 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);
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *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 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *(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 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);
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *(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 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 */
- for (iX = 0; iX < pData->iRowsize; iX++)
- *pRawo++ = (mng_uint8)(~(*pRawi++));
-
- }
-
-#ifdef MNG_SUPPORT_TRACE
- MNG_TRACE (pData, MNG_FN_DIFFER_IDX1, MNG_LC_END)
-#endif
-
- return MNG_NOERROR;
-}
-
-/* ************************************************************************** */
-
-mng_retcode 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- 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 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- 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 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *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 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *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 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);
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *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 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;
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *(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 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);
-
- for (iX = 0; iX < pData->iRowsamples; iX++)
- {
- *(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 /* MNG_INCLUDE_FILTERS */
-
-/* ************************************************************************** */
-/* * end of file * */
-/* ************************************************************************** */
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 18:47:56 +0000