/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #include #include #include #include #include #include #include #include // ----------- // - Defines - // ----------- #define RGB15( _def_cR, _def_cG, _def_cB ) (((sal_uLong)(_def_cR)<<10UL)|((sal_uLong)(_def_cG)<<5UL)|(sal_uLong)(_def_cB)) #define GAMMA( _def_cVal, _def_InvGamma ) ((sal_uInt8)MinMax(FRound(pow( _def_cVal/255.0,_def_InvGamma)*255.0),0L,255L)) #define CALC_ERRORS \ nTemp = p1T[nX++] >> 12; \ nBErr = MinMax( nTemp, 0, 255 ); \ nBErr = nBErr - FloydIndexMap[ nBC = FloydMap[nBErr] ]; \ nTemp = p1T[nX++] >> 12; \ nGErr = MinMax( nTemp, 0, 255 ); \ nGErr = nGErr - FloydIndexMap[ nGC = FloydMap[nGErr] ]; \ nTemp = p1T[nX] >> 12; \ nRErr = MinMax( nTemp, 0, 255 ); \ nRErr = nRErr - FloydIndexMap[ nRC = FloydMap[nRErr] ]; #define CALC_TABLES3 \ p2T[nX++] += FloydError3[nBErr]; \ p2T[nX++] += FloydError3[nGErr]; \ p2T[nX++] += FloydError3[nRErr]; #define CALC_TABLES5 \ p2T[nX++] += FloydError5[nBErr]; \ p2T[nX++] += FloydError5[nGErr]; \ p2T[nX++] += FloydError5[nRErr]; #define CALC_TABLES7 \ p1T[++nX] += FloydError7[nBErr]; \ p2T[nX++] += FloydError1[nBErr]; \ p1T[nX] += FloydError7[nGErr]; \ p2T[nX++] += FloydError1[nGErr]; \ p1T[nX] += FloydError7[nRErr]; \ p2T[nX] += FloydError1[nRErr]; // ----------- // - Statics - // ----------- const extern sal_uLong nVCLRLut[ 6 ] = { 16, 17, 18, 19, 20, 21 }; const extern sal_uLong nVCLGLut[ 6 ] = { 0, 6, 12, 18, 24, 30 }; const extern sal_uLong nVCLBLut[ 6 ] = { 0, 36, 72, 108, 144, 180 }; const extern sal_uLong nVCLDitherLut[ 256 ] = { 0, 49152, 12288, 61440, 3072, 52224, 15360, 64512, 768, 49920, 13056, 62208, 3840, 52992, 16128, 65280, 32768, 16384, 45056, 28672, 35840, 19456, 48128, 31744, 33536, 17152, 45824, 29440, 36608, 20224, 48896, 32512, 8192, 57344, 4096, 53248, 11264, 60416, 7168, 56320, 8960, 58112, 4864, 54016, 12032, 61184, 7936, 57088, 40960, 24576, 36864, 20480, 44032, 27648, 39936, 23552, 41728, 25344, 37632, 21248, 44800, 28416, 40704, 24320, 2048, 51200, 14336, 63488, 1024, 50176, 13312, 62464, 2816, 51968, 15104, 64256, 1792, 50944, 14080, 63232, 34816, 18432, 47104, 30720, 33792, 17408, 46080, 29696, 35584, 19200, 47872, 31488, 34560, 18176, 46848, 30464, 10240, 59392, 6144, 55296, 9216, 58368, 5120, 54272, 11008, 60160, 6912, 56064, 9984, 59136, 5888, 55040, 43008, 26624, 38912, 22528, 41984, 25600, 37888, 21504, 43776, 27392, 39680, 23296, 42752, 26368, 38656, 22272, 512, 49664, 12800, 61952, 3584, 52736, 15872, 65024, 256, 49408, 12544, 61696, 3328, 52480, 15616, 64768, 33280, 16896, 45568, 29184, 36352, 19968, 48640, 32256, 33024, 16640, 45312, 28928, 36096, 19712, 48384, 32000, 8704, 57856, 4608, 53760, 11776, 60928, 7680, 56832, 8448, 57600, 4352, 53504, 11520, 60672, 7424, 56576, 41472, 25088, 37376, 20992, 44544, 28160, 40448, 24064, 41216, 24832, 37120, 20736, 44288, 27904, 40192, 23808, 2560, 51712, 14848, 64000, 1536, 50688, 13824, 62976, 2304, 51456, 14592, 63744, 1280, 50432, 13568, 62720, 35328, 18944, 47616, 31232, 34304, 17920, 46592, 30208, 35072, 18688, 47360, 30976, 34048, 17664, 46336, 29952, 10752, 59904, 6656, 55808, 9728, 58880, 5632, 54784, 10496, 59648, 6400, 55552, 9472, 58624, 5376, 54528, 43520, 27136, 39424, 23040, 42496, 26112, 38400, 22016, 43264, 26880, 39168, 22784, 42240, 25856, 38144, 21760 }; const extern sal_uLong nVCLLut[ 256 ] = { 0, 1286, 2572, 3858, 5144, 6430, 7716, 9002, 10288, 11574, 12860, 14146, 15432, 16718, 18004, 19290, 20576, 21862, 23148, 24434, 25720, 27006, 28292, 29578, 30864, 32150, 33436, 34722, 36008, 37294, 38580, 39866, 41152, 42438, 43724, 45010, 46296, 47582, 48868, 50154, 51440, 52726, 54012, 55298, 56584, 57870, 59156, 60442, 61728, 63014, 64300, 65586, 66872, 68158, 69444, 70730, 72016, 73302, 74588, 75874, 77160, 78446, 79732, 81018, 82304, 83590, 84876, 86162, 87448, 88734, 90020, 91306, 92592, 93878, 95164, 96450, 97736, 99022,100308,101594, 102880,104166,105452,106738,108024,109310,110596,111882, 113168,114454,115740,117026,118312,119598,120884,122170, 123456,124742,126028,127314,128600,129886,131172,132458, 133744,135030,136316,137602,138888,140174,141460,142746, 144032,145318,146604,147890,149176,150462,151748,153034, 154320,155606,156892,158178,159464,160750,162036,163322, 164608,165894,167180,168466,169752,171038,172324,173610, 174896,176182,177468,178754,180040,181326,182612,183898, 185184,186470,187756,189042,190328,191614,192900,194186, 195472,196758,198044,199330,200616,201902,203188,204474, 205760,207046,208332,209618,210904,212190,213476,214762, 216048,217334,218620,219906,221192,222478,223764,225050, 226336,227622,228908,230194,231480,232766,234052,235338, 236624,237910,239196,240482,241768,243054,244340,245626, 246912,248198,249484,250770,252056,253342,254628,255914, 257200,258486,259772,261058,262344,263630,264916,266202, 267488,268774,270060,271346,272632,273918,275204,276490, 277776,279062,280348,281634,282920,284206,285492,286778, 288064,289350,290636,291922,293208,294494,295780,297066, 298352,299638,300924,302210,303496,304782,306068,307354, 308640,309926,311212,312498,313784,315070,316356,317642, 318928,320214,321500,322786,324072,325358,326644,327930 }; const long FloydMap[256] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 }; const long FloydError1[61] = { -7680, -7424, -7168, -6912, -6656, -6400, -6144, -5888, -5632, -5376, -5120, -4864, -4608, -4352, -4096, -3840, -3584, -3328, -3072, -2816, -2560, -2304, -2048, -1792, -1536, -1280, -1024, -768, -512, -256, 0, 256, 512, 768, 1024, 1280, 1536, 1792, 2048, 2304, 2560, 2816, 3072, 3328, 3584, 3840, 4096, 4352, 4608, 4864, 5120, 5376, 5632, 5888, 6144, 6400, 6656, 6912, 7168, 7424, 7680 }; const long FloydError3[61] = { -23040, -22272, -21504, -20736, -19968, -19200, -18432, -17664, -16896, -16128, -15360, -14592, -13824, -13056, -12288, -11520, -10752, -9984, -9216, -8448, -7680, -6912, -6144, -5376, -4608, -3840, -3072, -2304, -1536, -768, 0, 768, 1536, 2304, 3072, 3840, 4608, 5376, 6144, 6912, 7680, 8448, 9216, 9984, 10752, 11520, 12288, 13056, 13824, 14592, 15360, 16128, 16896, 17664, 18432, 19200, 19968, 20736, 21504, 22272, 23040 }; const long FloydError5[61] = { -38400, -37120, -35840, -34560, -33280, -32000, -30720, -29440, -28160, -26880, -25600, -24320, -23040, -21760, -20480, -19200, -17920, -16640, -15360, -14080, -12800, -11520, -10240, -8960, -7680, -6400, -5120, -3840, -2560, -1280, 0, 1280, 2560, 3840, 5120, 6400, 7680, 8960, 10240, 11520, 12800, 14080, 15360, 16640, 17920, 19200, 20480, 21760, 23040, 24320, 25600, 26880, 28160, 29440, 30720, 32000, 33280, 34560, 35840, 37120, 38400 }; const long FloydError7[61] = { -53760, -51968, -50176, -48384, -46592, -44800, -43008, -41216, -39424, -37632, -35840, -34048, -32256, -30464, -28672, -26880, -25088, -23296, -21504, -19712, -17920, -16128, -14336, -12544, -10752, -8960, -7168, -5376, -3584, -1792, 0, 1792, 3584, 5376, 7168, 8960, 10752, 12544, 14336, 16128, 17920, 19712, 21504, 23296, 25088, 26880, 28672, 30464, 32256, 34048, 35840, 37632, 39424, 41216, 43008, 44800, 46592, 48384, 50176, 51968, 53760 }; const long FloydIndexMap[6] = { -30, 21, 72, 123, 174, 225 }; // -------------------------- // - ImplCreateDitherMatrix - // -------------------------- void ImplCreateDitherMatrix( sal_uInt8 (*pDitherMatrix)[16][16] ) { double fVal = 3.125; const double fVal16 = fVal / 16.; long i, j, k, l; sal_uInt16 pMtx[ 16 ][ 16 ]; sal_uInt16 nMax = 0; static sal_uInt8 pMagic[4][4] = { { 0, 14, 3, 13, }, {11, 5, 8, 6, }, {12, 2, 15, 1, }, {7, 9, 4, 10 } }; // MagicSquare aufbauen for ( i = 0; i < 4; i++ ) for ( j = 0; j < 4; j++ ) for ( k = 0; k < 4; k++ ) for ( l = 0; l < 4; l++ ) nMax = Max ( pMtx[ (k<<2) + i][(l<<2 ) + j] = (sal_uInt16) ( 0.5 + pMagic[i][j]*fVal + pMagic[k][l]*fVal16 ), nMax ); // auf Intervall [0;254] skalieren for ( i = 0, fVal = 254. / nMax; i < 16; i++ ) for( j = 0; j < 16; j++ ) (*pDitherMatrix)[i][j] = (sal_uInt8) ( fVal * pMtx[i][j] ); } // ---------- // - Bitmap - // ---------- sal_Bool Bitmap::Convert( BmpConversion eConversion ) { const sal_uInt16 nBitCount = GetBitCount(); sal_Bool bRet = sal_False; switch( eConversion ) { case( BMP_CONVERSION_1BIT_THRESHOLD ): bRet = ImplMakeMono( 128 ); break; case( BMP_CONVERSION_1BIT_MATRIX ): bRet = ImplMakeMonoDither(); break; case( BMP_CONVERSION_4BIT_GREYS ): bRet = ImplMakeGreyscales( 16 ); break; case( BMP_CONVERSION_4BIT_COLORS ): { if( nBitCount < 4 ) bRet = ImplConvertUp( 4, NULL ); else if( nBitCount > 4 ) bRet = ImplConvertDown( 4, NULL ); else bRet = sal_True; } break; case( BMP_CONVERSION_4BIT_TRANS ): { Color aTrans( BMP_COL_TRANS ); if( nBitCount < 4 ) bRet = ImplConvertUp( 4, &aTrans ); else bRet = ImplConvertDown( 4, &aTrans ); } break; case( BMP_CONVERSION_8BIT_GREYS ): bRet = ImplMakeGreyscales( 256 ); break; case( BMP_CONVERSION_8BIT_COLORS ): { if( nBitCount < 8 ) bRet = ImplConvertUp( 8 ); else if( nBitCount > 8 ) bRet = ImplConvertDown( 8 ); else bRet = sal_True; } break; case( BMP_CONVERSION_8BIT_TRANS ): { Color aTrans( BMP_COL_TRANS ); if( nBitCount < 8 ) bRet = ImplConvertUp( 8, &aTrans ); else bRet = ImplConvertDown( 8, &aTrans ); } break; case( BMP_CONVERSION_24BIT ): { if( nBitCount < 24 ) bRet = ImplConvertUp( 24, NULL ); else bRet = sal_True; } break; case( BMP_CONVERSION_GHOSTED ): bRet = ImplConvertGhosted(); break; default: OSL_FAIL( "Bitmap::Convert(): Unsupported conversion" ); break; } return bRet; } sal_Bool Bitmap::ImplMakeMono( sal_uInt8 cThreshold ) { BitmapReadAccess* pReadAcc = AcquireReadAccess(); sal_Bool bRet = sal_False; if( pReadAcc ) { Bitmap aNewBmp( GetSizePixel(), 1 ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pWriteAcc ) { const BitmapColor aBlack( pWriteAcc->GetBestMatchingColor( Color( COL_BLACK ) ) ); const BitmapColor aWhite( pWriteAcc->GetBestMatchingColor( Color( COL_WHITE ) ) ); const long nWidth = pWriteAcc->Width(); const long nHeight = pWriteAcc->Height(); if( pReadAcc->HasPalette() ) { for( long nY = 0L; nY < nHeight; nY++ ) { for( long nX = 0L; nX < nWidth; nX++ ) { if( pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ).GetLuminance() >= cThreshold ) { pWriteAcc->SetPixel( nY, nX, aWhite ); } else pWriteAcc->SetPixel( nY, nX, aBlack ); } } } else { for( long nY = 0L; nY < nHeight; nY++ ) { for( long nX = 0L; nX < nWidth; nX++ ) { if( pReadAcc->GetPixel( nY, nX ).GetLuminance() >= cThreshold ) { pWriteAcc->SetPixel( nY, nX, aWhite ); } else pWriteAcc->SetPixel( nY, nX, aBlack ); } } } aNewBmp.ReleaseAccess( pWriteAcc ); bRet = sal_True; } ReleaseAccess( pReadAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } } return bRet; } sal_Bool Bitmap::ImplMakeMonoDither() { BitmapReadAccess* pReadAcc = AcquireReadAccess(); sal_Bool bRet = sal_False; if( pReadAcc ) { Bitmap aNewBmp( GetSizePixel(), 1 ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pWriteAcc ) { const BitmapColor aBlack( pWriteAcc->GetBestMatchingColor( Color( COL_BLACK ) ) ); const BitmapColor aWhite( pWriteAcc->GetBestMatchingColor( Color( COL_WHITE ) ) ); const long nWidth = pWriteAcc->Width(); const long nHeight = pWriteAcc->Height(); sal_uInt8 pDitherMatrix[ 16 ][ 16 ]; ImplCreateDitherMatrix( &pDitherMatrix ); if( pReadAcc->HasPalette() ) { for( long nY = 0L; nY < nHeight; nY++ ) { for( long nX = 0L, nModY = nY % 16; nX < nWidth; nX++ ) { if( pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ).GetLuminance() > pDitherMatrix[ nModY ][ nX % 16 ] ) { pWriteAcc->SetPixel( nY, nX, aWhite ); } else pWriteAcc->SetPixel( nY, nX, aBlack ); } } } else { for( long nY = 0L; nY < nHeight; nY++ ) { for( long nX = 0L, nModY = nY % 16; nX < nWidth; nX++ ) { if( pReadAcc->GetPixel( nY, nX ).GetLuminance() > pDitherMatrix[ nModY ][ nX % 16 ] ) { pWriteAcc->SetPixel( nY, nX, aWhite ); } else pWriteAcc->SetPixel( nY, nX, aBlack ); } } } aNewBmp.ReleaseAccess( pWriteAcc ); bRet = sal_True; } ReleaseAccess( pReadAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } } return bRet; } sal_Bool Bitmap::ImplMakeGreyscales( sal_uInt16 nGreys ) { DBG_ASSERT( nGreys == 16 || nGreys == 256, "Only 16 or 256 greyscales are supported!" ); BitmapReadAccess* pReadAcc = AcquireReadAccess(); sal_Bool bRet = sal_False; if( pReadAcc ) { const BitmapPalette& rPal = GetGreyPalette( nGreys ); sal_uLong nShift = ( ( nGreys == 16 ) ? 4UL : 0UL ); sal_Bool bPalDiffers = !pReadAcc->HasPalette() || ( rPal.GetEntryCount() != pReadAcc->GetPaletteEntryCount() ); if( !bPalDiffers ) bPalDiffers = ( (BitmapPalette&) rPal != pReadAcc->GetPalette() ); if( bPalDiffers ) { Bitmap aNewBmp( GetSizePixel(), ( nGreys == 16 ) ? 4 : 8, &rPal ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pWriteAcc ) { const long nWidth = pWriteAcc->Width(); const long nHeight = pWriteAcc->Height(); if( pReadAcc->HasPalette() ) { for( long nY = 0L; nY < nHeight; nY++ ) { for( long nX = 0L; nX < nWidth; nX++ ) { pWriteAcc->SetPixel( nY, nX, (sal_uInt8) ( pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ).GetLuminance() >> nShift ) ); } } } else if( pReadAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_BGR && pWriteAcc->GetScanlineFormat() == BMP_FORMAT_8BIT_PAL ) { nShift += 8; for( long nY = 0L; nY < nHeight; nY++ ) { Scanline pReadScan = pReadAcc->GetScanline( nY ); Scanline pWriteScan = pWriteAcc->GetScanline( nY ); for( long nX = 0L; nX < nWidth; nX++ ) { const sal_uLong nB = *pReadScan++; const sal_uLong nG = *pReadScan++; const sal_uLong nR = *pReadScan++; *pWriteScan++ = (sal_uInt8) ( ( nB * 28UL + nG * 151UL + nR * 77UL ) >> nShift ); } } } else if( pReadAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_RGB && pWriteAcc->GetScanlineFormat() == BMP_FORMAT_8BIT_PAL ) { nShift += 8; for( long nY = 0L; nY < nHeight; nY++ ) { Scanline pReadScan = pReadAcc->GetScanline( nY ); Scanline pWriteScan = pWriteAcc->GetScanline( nY ); for( long nX = 0L; nX < nWidth; nX++ ) { const sal_uLong nR = *pReadScan++; const sal_uLong nG = *pReadScan++; const sal_uLong nB = *pReadScan++; *pWriteScan++ = (sal_uInt8) ( ( nB * 28UL + nG * 151UL + nR * 77UL ) >> nShift ); } } } else { for( long nY = 0L; nY < nHeight; nY++ ) for( long nX = 0L; nX < nWidth; nX++ ) pWriteAcc->SetPixel( nY, nX, sal::static_int_cast(( pReadAcc->GetPixel( nY, nX ) ).GetLuminance() >> nShift) ); } aNewBmp.ReleaseAccess( pWriteAcc ); bRet = sal_True; } ReleaseAccess( pReadAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } } else { ReleaseAccess( pReadAcc ); bRet = sal_True; } } return bRet; } sal_Bool Bitmap::ImplConvertUp( sal_uInt16 nBitCount, Color* pExtColor ) { DBG_ASSERT( nBitCount > GetBitCount(), "New BitCount must be greater!" ); BitmapReadAccess* pReadAcc = AcquireReadAccess(); sal_Bool bRet = sal_False; if( pReadAcc ) { BitmapPalette aPal; Bitmap aNewBmp( GetSizePixel(), nBitCount, pReadAcc->HasPalette() ? &pReadAcc->GetPalette() : &aPal ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pWriteAcc ) { const long nWidth = pWriteAcc->Width(); const long nHeight = pWriteAcc->Height(); if( pWriteAcc->HasPalette() ) { const sal_uInt16 nOldCount = 1 << GetBitCount(); const BitmapPalette& rOldPal = pReadAcc->GetPalette(); aPal.SetEntryCount( 1 << nBitCount ); for( sal_uInt16 i = 0; i < nOldCount; i++ ) aPal[ i ] = rOldPal[ i ]; if( pExtColor ) aPal[ aPal.GetEntryCount() - 1 ] = *pExtColor; pWriteAcc->SetPalette( aPal ); for( long nY = 0L; nY < nHeight; nY++ ) for( long nX = 0L; nX < nWidth; nX++ ) pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPixel( nY, nX ) ); } else { if( pReadAcc->HasPalette() ) { for( long nY = 0L; nY < nHeight; nY++ ) for( long nX = 0L; nX < nWidth; nX++ ) pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ) ); } else { for( long nY = 0L; nY < nHeight; nY++ ) for( long nX = 0L; nX < nWidth; nX++ ) pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPixel( nY, nX ) ); } } aNewBmp.ReleaseAccess( pWriteAcc ); bRet = sal_True; } ReleaseAccess( pReadAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } } return bRet; } sal_Bool Bitmap::ImplConvertDown( sal_uInt16 nBitCount, Color* pExtColor ) { DBG_ASSERT( nBitCount <= GetBitCount(), "New BitCount must be lower ( or equal when pExtColor is set )!" ); BitmapReadAccess* pReadAcc = AcquireReadAccess(); sal_Bool bRet = sal_False; if( pReadAcc ) { BitmapPalette aPal; Bitmap aNewBmp( GetSizePixel(), nBitCount, &aPal ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pWriteAcc ) { const sal_uInt16 nCount = 1 << nBitCount; const long nWidth = pWriteAcc->Width(); const long nWidth1 = nWidth - 1L; const long nHeight = pWriteAcc->Height(); Octree aOctree( *pReadAcc, pExtColor ? ( nCount - 1 ) : nCount ); InverseColorMap aColorMap( aPal = aOctree.GetPalette() ); BitmapColor aColor; ImpErrorQuad aErrQuad; ImpErrorQuad* pErrQuad1 = new ImpErrorQuad[ nWidth ]; ImpErrorQuad* pErrQuad2 = new ImpErrorQuad[ nWidth ]; ImpErrorQuad* pQLine1 = pErrQuad1; ImpErrorQuad* pQLine2 = 0; long nX, nY; long nYTmp = 0L; sal_uInt8 cIndex; sal_Bool bQ1 = sal_True; if( pExtColor ) { aPal.SetEntryCount( aPal.GetEntryCount() + 1 ); aPal[ aPal.GetEntryCount() - 1 ] = *pExtColor; } // set Black/White always, if we have enough space if( aPal.GetEntryCount() < ( nCount - 1 ) ) { aPal.SetEntryCount( aPal.GetEntryCount() + 2 ); aPal[ aPal.GetEntryCount() - 2 ] = Color( COL_BLACK ); aPal[ aPal.GetEntryCount() - 1 ] = Color( COL_WHITE ); } pWriteAcc->SetPalette( aPal ); for( nY = 0L; nY < Min( nHeight, 2L ); nY++, nYTmp++ ) { for( nX = 0L, pQLine2 = !nY ? pErrQuad1 : pErrQuad2; nX < nWidth; nX++ ) { if( pReadAcc->HasPalette() ) pQLine2[ nX ] = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nYTmp, nX ) ); else pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); } } for( nY = 0L; nY < nHeight; nY++, nYTmp++ ) { // erstes ZeilenPixel cIndex = (sal_uInt8) aColorMap.GetBestPaletteIndex( pQLine1[ 0 ].ImplGetColor() ); pWriteAcc->SetPixel( nY, 0, cIndex ); for( nX = 1L; nX < nWidth1; nX++ ) { cIndex = (sal_uInt8) aColorMap.GetBestPaletteIndex( aColor = pQLine1[ nX ].ImplGetColor() ); aErrQuad = ( ImpErrorQuad( aColor ) -= pWriteAcc->GetPaletteColor( cIndex ) ); pQLine1[ ++nX ].ImplAddColorError7( aErrQuad ); pQLine2[ nX-- ].ImplAddColorError1( aErrQuad ); pQLine2[ nX-- ].ImplAddColorError5( aErrQuad ); pQLine2[ nX++ ].ImplAddColorError3( aErrQuad ); pWriteAcc->SetPixel( nY, nX, cIndex ); } // letztes ZeilenPixel if( nX < nWidth ) { cIndex = (sal_uInt8) aColorMap.GetBestPaletteIndex( pQLine1[ nWidth1 ].ImplGetColor() ); pWriteAcc->SetPixel( nY, nX, cIndex ); } // Zeilenpuffer neu fuellen/kopieren pQLine1 = pQLine2; pQLine2 = ( bQ1 = !bQ1 ) != sal_False ? pErrQuad2 : pErrQuad1; if( nYTmp < nHeight ) { for( nX = 0L; nX < nWidth; nX++ ) { if( pReadAcc->HasPalette() ) pQLine2[ nX ] = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nYTmp, nX ) ); else pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); } } } // Zeilenpuffer zerstoeren delete[] pErrQuad1; delete[] pErrQuad2; aNewBmp.ReleaseAccess( pWriteAcc ); bRet = sal_True; } ReleaseAccess( pReadAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } } return bRet; } sal_Bool Bitmap::ImplConvertGhosted() { Bitmap aNewBmp; BitmapReadAccess* pR = AcquireReadAccess(); sal_Bool bRet = sal_False; if( pR ) { if( pR->HasPalette() ) { BitmapPalette aNewPal( pR->GetPaletteEntryCount() ); for( long i = 0, nCount = aNewPal.GetEntryCount(); i < nCount; i++ ) { const BitmapColor& rOld = pR->GetPaletteColor( (sal_uInt16) i ); aNewPal[ (sal_uInt16) i ] = BitmapColor( ( rOld.GetRed() >> 1 ) | 0x80, ( rOld.GetGreen() >> 1 ) | 0x80, ( rOld.GetBlue() >> 1 ) | 0x80 ); } aNewBmp = Bitmap( GetSizePixel(), GetBitCount(), &aNewPal ); BitmapWriteAccess* pW = aNewBmp.AcquireWriteAccess(); if( pW ) { pW->CopyBuffer( *pR ); aNewBmp.ReleaseAccess( pW ); bRet = sal_True; } } else { aNewBmp = Bitmap( GetSizePixel(), 24 ); BitmapWriteAccess* pW = aNewBmp.AcquireWriteAccess(); if( pW ) { const long nWidth = pR->Width(), nHeight = pR->Height(); for( long nY = 0; nY < nHeight; nY++ ) { for( long nX = 0; nX < nWidth; nX++ ) { const BitmapColor aOld( pR->GetPixel( nY, nX ) ); pW->SetPixel( nY, nX, BitmapColor( ( aOld.GetRed() >> 1 ) | 0x80, ( aOld.GetGreen() >> 1 ) | 0x80, ( aOld.GetBlue() >> 1 ) | 0x80 ) ); } } aNewBmp.ReleaseAccess( pW ); bRet = sal_True; } } ReleaseAccess( pR ); } if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } return bRet; } sal_Bool Bitmap::Scale( const double& rScaleX, const double& rScaleY, sal_uLong nScaleFlag ) { bool bRet; if( ( rScaleX != 1.0 ) || ( rScaleY != 1.0 ) ) { if( BMP_SCALE_FAST == nScaleFlag ) { bRet = ImplScaleFast( rScaleX, rScaleY ); } else if( BMP_SCALE_INTERPOLATE == nScaleFlag ) { bRet = ImplScaleInterpolate( rScaleX, rScaleY ); } else if( BMP_SCALE_LANCZOS == nScaleFlag ) { Lanczos3Kernel kernel; bRet = ImplScaleConvolution( rScaleX, rScaleY, kernel); } else if( BMP_SCALE_BICUBIC == nScaleFlag ) { BicubicKernel kernel; bRet = ImplScaleConvolution( rScaleX, rScaleY, kernel ); } else if( BMP_SCALE_BILINEAR == nScaleFlag ) { BilinearKernel kernel; bRet = ImplScaleConvolution( rScaleX, rScaleY, kernel ); } else if( BMP_SCALE_BOX == nScaleFlag ) { BoxKernel kernel; bRet = ImplScaleConvolution( rScaleX, rScaleY, kernel ); } else { return false; } } else bRet = true; return bRet; } sal_Bool Bitmap::Scale( const Size& rNewSize, sal_uLong nScaleFlag ) { const Size aSize( GetSizePixel() ); bool bRet; if( aSize.Width() && aSize.Height() ) { bRet = Scale( (double) rNewSize.Width() / aSize.Width(), (double) rNewSize.Height() / aSize.Height(), nScaleFlag ); } else bRet = sal_True; return bRet; } sal_Bool Bitmap::ImplScaleFast( const double& rScaleX, const double& rScaleY ) { const Size aSizePix( GetSizePixel() ); const long nNewWidth = FRound( aSizePix.Width() * rScaleX ); const long nNewHeight = FRound( aSizePix.Height() * rScaleY ); sal_Bool bRet = sal_False; if( nNewWidth && nNewHeight ) { BitmapReadAccess* pReadAcc = AcquireReadAccess(); if(pReadAcc) { Bitmap aNewBmp( Size( nNewWidth, nNewHeight ), GetBitCount(), &pReadAcc->GetPalette() ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pWriteAcc ) { const long nScanlineSize = pWriteAcc->GetScanlineSize(); const long nNewWidth1 = nNewWidth - 1L; const long nNewHeight1 = nNewHeight - 1L; const long nWidth = pReadAcc->Width(); const long nHeight = pReadAcc->Height(); long* pLutX = new long[ nNewWidth ]; long* pLutY = new long[ nNewHeight ]; if( nNewWidth1 && nNewHeight1 ) { long nX, nY, nMapY, nActY = 0L; for( nX = 0L; nX < nNewWidth; nX++ ) pLutX[ nX ] = nX * nWidth / nNewWidth; for( nY = 0L; nY < nNewHeight; nY++ ) pLutY[ nY ] = nY * nHeight / nNewHeight; while( nActY < nNewHeight ) { nMapY = pLutY[ nActY ]; for( nX = 0L; nX < nNewWidth; nX++ ) pWriteAcc->SetPixel( nActY, nX, pReadAcc->GetPixel( nMapY , pLutX[ nX ] ) ); while( ( nActY < nNewHeight1 ) && ( pLutY[ nActY + 1 ] == nMapY ) ) { memcpy( pWriteAcc->GetScanline( nActY + 1L ), pWriteAcc->GetScanline( nActY ), nScanlineSize ); nActY++; } nActY++; } bRet = sal_True; aNewBmp.ReleaseAccess( pWriteAcc ); } delete[] pLutX; delete[] pLutY; } ReleaseAccess( pReadAcc ); if( bRet ) ImplAssignWithSize( aNewBmp ); } } return bRet; } sal_Bool Bitmap::ImplScaleInterpolate( const double& rScaleX, const double& rScaleY ) { const Size aSizePix( GetSizePixel() ); const long nNewWidth = FRound( aSizePix.Width() * rScaleX ); const long nNewHeight = FRound( aSizePix.Height() * rScaleY ); sal_Bool bRet = sal_False; if( ( nNewWidth > 1L ) && ( nNewHeight > 1L ) ) { BitmapColor aCol0; BitmapColor aCol1; BitmapReadAccess* pReadAcc = AcquireReadAccess(); long nWidth = pReadAcc->Width(); long nHeight = pReadAcc->Height(); Bitmap aNewBmp( Size( nNewWidth, nHeight ), 24 ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); long* pLutInt; long* pLutFrac; long nX, nY; long lXB0, lXB1, lXG0, lXG1, lXR0, lXR1; double fTemp; long nTemp; if( pReadAcc && pWriteAcc ) { const long nNewWidth1 = nNewWidth - 1L; const long nWidth1 = pReadAcc->Width() - 1L; const double fRevScaleX = (double) nWidth1 / nNewWidth1; pLutInt = new long[ nNewWidth ]; pLutFrac = new long[ nNewWidth ]; for( nX = 0L, nTemp = nWidth - 2L; nX < nNewWidth; nX++ ) { fTemp = nX * fRevScaleX; pLutInt[ nX ] = MinMax( (long) fTemp, 0, nTemp ); fTemp -= pLutInt[ nX ]; pLutFrac[ nX ] = (long) ( fTemp * 1024. ); } if( pReadAcc->HasPalette() ) { for( nY = 0L; nY < nHeight; nY++ ) { if( 1 == nWidth ) { aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, 0 ) ); for( nX = 0L; nX < nNewWidth; nX++ ) pWriteAcc->SetPixel( nY, nX, aCol0 ); } else { for( nX = 0L; nX < nNewWidth; nX++ ) { nTemp = pLutInt[ nX ]; aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nTemp++ ) ); aCol1 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nTemp ) ); nTemp = pLutFrac[ nX ]; lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); pWriteAcc->SetPixel( nY, nX, aCol0 ); } } } } else { for( nY = 0L; nY < nHeight; nY++ ) { if( 1 == nWidth ) { aCol0 = pReadAcc->GetPixel( nY, 0 ); for( nX = 0L; nX < nNewWidth; nX++ ) pWriteAcc->SetPixel( nY, nX, aCol0 ); } else { for( nX = 0L; nX < nNewWidth; nX++ ) { nTemp = pLutInt[ nX ]; aCol0 = pReadAcc->GetPixel( nY, nTemp++ ); aCol1 = pReadAcc->GetPixel( nY, nTemp ); nTemp = pLutFrac[ nX ]; lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); pWriteAcc->SetPixel( nY, nX, aCol0 ); } } } } delete[] pLutInt; delete[] pLutFrac; bRet = sal_True; } ReleaseAccess( pReadAcc ); aNewBmp.ReleaseAccess( pWriteAcc ); if( bRet ) { bRet = sal_False; ImplAssignWithSize( aNewBmp ); pReadAcc = AcquireReadAccess(); aNewBmp = Bitmap( Size( nNewWidth, nNewHeight ), 24 ); pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pReadAcc && pWriteAcc ) { const long nNewHeight1 = nNewHeight - 1L; const long nHeight1 = pReadAcc->Height() - 1L; const double fRevScaleY = (double) nHeight1 / nNewHeight1; pLutInt = new long[ nNewHeight ]; pLutFrac = new long[ nNewHeight ]; for( nY = 0L, nTemp = nHeight - 2L; nY < nNewHeight; nY++ ) { fTemp = nY * fRevScaleY; pLutInt[ nY ] = MinMax( (long) fTemp, 0, nTemp ); fTemp -= pLutInt[ nY ]; pLutFrac[ nY ] = (long) ( fTemp * 1024. ); } if( pReadAcc->HasPalette() ) { for( nX = 0L; nX < nNewWidth; nX++ ) { if( 1 == nHeight ) { aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( 0, nX ) ); for( nY = 0L; nY < nNewHeight; nY++ ) pWriteAcc->SetPixel( nY, nX, aCol0 ); } else { for( nY = 0L; nY < nNewHeight; nY++ ) { nTemp = pLutInt[ nY ]; aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nTemp++, nX ) ); aCol1 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nTemp, nX ) ); nTemp = pLutFrac[ nY ]; lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); pWriteAcc->SetPixel( nY, nX, aCol0 ); } } } } else { for( nX = 0L; nX < nNewWidth; nX++ ) { if( 1 == nHeight ) { aCol0 = pReadAcc->GetPixel( 0, nX ); for( nY = 0L; nY < nNewHeight; nY++ ) pWriteAcc->SetPixel( nY, nX, aCol0 ); } else { for( nY = 0L; nY < nNewHeight; nY++ ) { nTemp = pLutInt[ nY ]; aCol0 = pReadAcc->GetPixel( nTemp++, nX ); aCol1 = pReadAcc->GetPixel( nTemp, nX ); nTemp = pLutFrac[ nY ]; lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); pWriteAcc->SetPixel( nY, nX, aCol0 ); } } } } delete[] pLutInt; delete[] pLutFrac; bRet = sal_True; } ReleaseAccess( pReadAcc ); aNewBmp.ReleaseAccess( pWriteAcc ); if( bRet ) ImplAssignWithSize( aNewBmp ); } } if( !bRet ) bRet = ImplScaleFast( rScaleX, rScaleY ); return bRet; } sal_Bool Bitmap::Dither( sal_uLong nDitherFlags ) { sal_Bool bRet = sal_False; const Size aSizePix( GetSizePixel() ); if( aSizePix.Width() == 1 || aSizePix.Height() == 1 ) bRet = sal_True; else if( nDitherFlags & BMP_DITHER_MATRIX ) bRet = ImplDitherMatrix(); else if( nDitherFlags & BMP_DITHER_FLOYD ) bRet = ImplDitherFloyd(); else if( ( nDitherFlags & BMP_DITHER_FLOYD_16 ) && ( GetBitCount() == 24 ) ) bRet = ImplDitherFloyd16(); return bRet; } sal_Bool Bitmap::ImplDitherMatrix() { BitmapReadAccess* pReadAcc = AcquireReadAccess(); Bitmap aNewBmp( GetSizePixel(), 8 ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); sal_Bool bRet = sal_False; if( pReadAcc && pWriteAcc ) { const sal_uLong nWidth = pReadAcc->Width(); const sal_uLong nHeight = pReadAcc->Height(); BitmapColor aIndex( (sal_uInt8) 0 ); if( pReadAcc->HasPalette() ) { for( sal_uLong nY = 0UL; nY < nHeight; nY++ ) { for( sal_uLong nX = 0UL, nModY = ( nY & 0x0FUL ) << 4UL; nX < nWidth; nX++ ) { const BitmapColor aCol( pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ) ); const sal_uLong nD = nVCLDitherLut[ nModY + ( nX & 0x0FUL ) ]; const sal_uLong nR = ( nVCLLut[ aCol.GetRed() ] + nD ) >> 16UL; const sal_uLong nG = ( nVCLLut[ aCol.GetGreen() ] + nD ) >> 16UL; const sal_uLong nB = ( nVCLLut[ aCol.GetBlue() ] + nD ) >> 16UL; aIndex.SetIndex( (sal_uInt8) ( nVCLRLut[ nR ] + nVCLGLut[ nG ] + nVCLBLut[ nB ] ) ); pWriteAcc->SetPixel( nY, nX, aIndex ); } } } else { for( sal_uLong nY = 0UL; nY < nHeight; nY++ ) { for( sal_uLong nX = 0UL, nModY = ( nY & 0x0FUL ) << 4UL; nX < nWidth; nX++ ) { const BitmapColor aCol( pReadAcc->GetPixel( nY, nX ) ); const sal_uLong nD = nVCLDitherLut[ nModY + ( nX & 0x0FUL ) ]; const sal_uLong nR = ( nVCLLut[ aCol.GetRed() ] + nD ) >> 16UL; const sal_uLong nG = ( nVCLLut[ aCol.GetGreen() ] + nD ) >> 16UL; const sal_uLong nB = ( nVCLLut[ aCol.GetBlue() ] + nD ) >> 16UL; aIndex.SetIndex( (sal_uInt8) ( nVCLRLut[ nR ] + nVCLGLut[ nG ] + nVCLBLut[ nB ] ) ); pWriteAcc->SetPixel( nY, nX, aIndex ); } } } bRet = sal_True; } ReleaseAccess( pReadAcc ); aNewBmp.ReleaseAccess( pWriteAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } return bRet; } sal_Bool Bitmap::ImplDitherFloyd() { const Size aSize( GetSizePixel() ); sal_Bool bRet = sal_False; if( ( aSize.Width() > 3 ) && ( aSize.Height() > 2 ) ) { BitmapReadAccess* pReadAcc = AcquireReadAccess(); Bitmap aNewBmp( GetSizePixel(), 8 ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); if( pReadAcc && pWriteAcc ) { BitmapColor aColor; long nWidth = pReadAcc->Width(); long nWidth1 = nWidth - 1L; long nHeight = pReadAcc->Height(); long nX; long nW = nWidth * 3L; long nW2 = nW - 3L; long nRErr, nGErr, nBErr; long nRC, nGC, nBC; long nTemp; long nZ; long* p1 = new long[ nW ]; long* p2 = new long[ nW ]; long* p1T = p1; long* p2T = p2; long* pTmp; sal_Bool bPal = pReadAcc->HasPalette(); pTmp = p2T; if( bPal ) { for( nZ = 0; nZ < nWidth; nZ++ ) { aColor = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( 0, nZ ) ); *pTmp++ = (long) aColor.GetBlue() << 12; *pTmp++ = (long) aColor.GetGreen() << 12; *pTmp++ = (long) aColor.GetRed() << 12; } } else { for( nZ = 0; nZ < nWidth; nZ++ ) { aColor = pReadAcc->GetPixel( 0, nZ ); *pTmp++ = (long) aColor.GetBlue() << 12; *pTmp++ = (long) aColor.GetGreen() << 12; *pTmp++ = (long) aColor.GetRed() << 12; } } for( long nY = 1, nYAcc = 0L; nY <= nHeight; nY++, nYAcc++ ) { pTmp = p1T; p1T = p2T; p2T = pTmp; if( nY < nHeight ) { if( bPal ) { for( nZ = 0; nZ < nWidth; nZ++ ) { aColor = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nZ ) ); *pTmp++ = (long) aColor.GetBlue() << 12; *pTmp++ = (long) aColor.GetGreen() << 12; *pTmp++ = (long) aColor.GetRed() << 12; } } else { for( nZ = 0; nZ < nWidth; nZ++ ) { aColor = pReadAcc->GetPixel( nY, nZ ); *pTmp++ = (long) aColor.GetBlue() << 12; *pTmp++ = (long) aColor.GetGreen() << 12; *pTmp++ = (long) aColor.GetRed() << 12; } } } // erstes Pixel gesondert betrachten nX = 0; CALC_ERRORS; CALC_TABLES7; nX -= 5; CALC_TABLES5; pWriteAcc->SetPixel( nYAcc, 0, BitmapColor( (sal_uInt8) ( nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ] ) ) ); // mittlere Pixel ueber Schleife long nXAcc; for ( nX = 3L, nXAcc = 1L; nX < nW2; nXAcc++ ) { CALC_ERRORS; CALC_TABLES7; nX -= 8; CALC_TABLES3; CALC_TABLES5; pWriteAcc->SetPixel( nYAcc, nXAcc, BitmapColor( (sal_uInt8) ( nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ] ) ) ); } // letztes Pixel gesondert betrachten CALC_ERRORS; nX -= 5; CALC_TABLES3; CALC_TABLES5; pWriteAcc->SetPixel( nYAcc, nWidth1, BitmapColor( (sal_uInt8) ( nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ] ) ) ); } delete[] p1; delete[] p2; bRet = sal_True; } ReleaseAccess( pReadAcc ); aNewBmp.ReleaseAccess( pWriteAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aPrefSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aPrefSize; } } return bRet; } sal_Bool Bitmap::ImplDitherFloyd16() { BitmapReadAccess* pReadAcc = AcquireReadAccess(); Bitmap aNewBmp( GetSizePixel(), 24 ); BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); sal_Bool bRet = sal_False; if( pReadAcc && pWriteAcc ) { const long nWidth = pWriteAcc->Width(); const long nWidth1 = nWidth - 1L; const long nHeight = pWriteAcc->Height(); BitmapColor aColor; BitmapColor aBestCol; ImpErrorQuad aErrQuad; ImpErrorQuad* pErrQuad1 = new ImpErrorQuad[ nWidth ]; ImpErrorQuad* pErrQuad2 = new ImpErrorQuad[ nWidth ]; ImpErrorQuad* pQLine1 = pErrQuad1; ImpErrorQuad* pQLine2 = 0; long nX, nY; long nYTmp = 0L; sal_Bool bQ1 = sal_True; for( nY = 0L; nY < Min( nHeight, 2L ); nY++, nYTmp++ ) for( nX = 0L, pQLine2 = !nY ? pErrQuad1 : pErrQuad2; nX < nWidth; nX++ ) pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); for( nY = 0L; nY < nHeight; nY++, nYTmp++ ) { // erstes ZeilenPixel aBestCol = pQLine1[ 0 ].ImplGetColor(); aBestCol.SetRed( ( aBestCol.GetRed() & 248 ) | 7 ); aBestCol.SetGreen( ( aBestCol.GetGreen() & 248 ) | 7 ); aBestCol.SetBlue( ( aBestCol.GetBlue() & 248 ) | 7 ); pWriteAcc->SetPixel( nY, 0, aBestCol ); for( nX = 1L; nX < nWidth1; nX++ ) { aColor = pQLine1[ nX ].ImplGetColor(); aBestCol.SetRed( ( aColor.GetRed() & 248 ) | 7 ); aBestCol.SetGreen( ( aColor.GetGreen() & 248 ) | 7 ); aBestCol.SetBlue( ( aColor.GetBlue() & 248 ) | 7 ); aErrQuad = ( ImpErrorQuad( aColor ) -= aBestCol ); pQLine1[ ++nX ].ImplAddColorError7( aErrQuad ); pQLine2[ nX-- ].ImplAddColorError1( aErrQuad ); pQLine2[ nX-- ].ImplAddColorError5( aErrQuad ); pQLine2[ nX++ ].ImplAddColorError3( aErrQuad ); pWriteAcc->SetPixel( nY, nX, aBestCol ); } // letztes ZeilenPixel aBestCol = pQLine1[ nWidth1 ].ImplGetColor(); aBestCol.SetRed( ( aBestCol.GetRed() & 248 ) | 7 ); aBestCol.SetGreen( ( aBestCol.GetGreen() & 248 ) | 7 ); aBestCol.SetBlue( ( aBestCol.GetBlue() & 248 ) | 7 ); pWriteAcc->SetPixel( nY, nX, aBestCol ); // Zeilenpuffer neu fuellen/kopieren pQLine1 = pQLine2; pQLine2 = ( bQ1 = !bQ1 ) != sal_False ? pErrQuad2 : pErrQuad1; if( nYTmp < nHeight ) for( nX = 0L; nX < nWidth; nX++ ) pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); } // Zeilenpuffer zerstoeren delete[] pErrQuad1; delete[] pErrQuad2; bRet = sal_True; } ReleaseAccess( pReadAcc ); aNewBmp.ReleaseAccess( pWriteAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } return bRet; } sal_Bool Bitmap::ReduceColors( sal_uInt16 nColorCount, BmpReduce eReduce ) { sal_Bool bRet; if( GetColorCount() <= (sal_uLong) nColorCount ) bRet = sal_True; else if( nColorCount ) { if( BMP_REDUCE_SIMPLE == eReduce ) bRet = ImplReduceSimple( nColorCount ); else if( BMP_REDUCE_POPULAR == eReduce ) bRet = ImplReducePopular( nColorCount ); else bRet = ImplReduceMedian( nColorCount ); } else bRet = sal_False; return bRet; } sal_Bool Bitmap::ImplReduceSimple( sal_uInt16 nColorCount ) { Bitmap aNewBmp; BitmapReadAccess* pRAcc = AcquireReadAccess(); const sal_uInt16 nColCount = Min( nColorCount, (sal_uInt16) 256 ); sal_uInt16 nBitCount; sal_Bool bRet = sal_False; if( nColCount <= 2 ) nBitCount = 1; else if( nColCount <= 16 ) nBitCount = 4; else nBitCount = 8; if( pRAcc ) { Octree aOct( *pRAcc, nColCount ); const BitmapPalette& rPal = aOct.GetPalette(); BitmapWriteAccess* pWAcc; aNewBmp = Bitmap( GetSizePixel(), nBitCount, &rPal ); pWAcc = aNewBmp.AcquireWriteAccess(); if( pWAcc ) { const long nWidth = pRAcc->Width(); const long nHeight = pRAcc->Height(); if( pRAcc->HasPalette() ) { for( long nY = 0L; nY < nHeight; nY++ ) for( long nX =0L; nX < nWidth; nX++ ) pWAcc->SetPixel( nY, nX, (sal_uInt8) aOct.GetBestPaletteIndex( pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ) ) ); } else { for( long nY = 0L; nY < nHeight; nY++ ) for( long nX =0L; nX < nWidth; nX++ ) pWAcc->SetPixel( nY, nX, (sal_uInt8) aOct.GetBestPaletteIndex( pRAcc->GetPixel( nY, nX ) ) ); } aNewBmp.ReleaseAccess( pWAcc ); bRet = sal_True; } ReleaseAccess( pRAcc ); } if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } return bRet; } struct PopularColorCount { sal_uInt32 mnIndex; sal_uInt32 mnCount; }; extern "C" int __LOADONCALLAPI ImplPopularCmpFnc( const void* p1, const void* p2 ) { int nRet; if( ( (PopularColorCount*) p1 )->mnCount < ( (PopularColorCount*) p2 )->mnCount ) nRet = 1; else if( ( (PopularColorCount*) p1 )->mnCount == ( (PopularColorCount*) p2 )->mnCount ) nRet = 0; else nRet = -1; return nRet; } sal_Bool Bitmap::ImplReducePopular( sal_uInt16 nColCount ) { BitmapReadAccess* pRAcc = AcquireReadAccess(); sal_uInt16 nBitCount; sal_Bool bRet = sal_False; if( nColCount > 256 ) nColCount = 256; if( nColCount < 17 ) nBitCount = 4; else nBitCount = 8; if( pRAcc ) { const sal_uInt32 nValidBits = 4; const sal_uInt32 nRightShiftBits = 8 - nValidBits; const sal_uInt32 nLeftShiftBits1 = nValidBits; const sal_uInt32 nLeftShiftBits2 = nValidBits << 1; const sal_uInt32 nColorsPerComponent = 1 << nValidBits; const sal_uInt32 nColorOffset = 256 / nColorsPerComponent; const sal_uInt32 nTotalColors = nColorsPerComponent * nColorsPerComponent * nColorsPerComponent; const long nWidth = pRAcc->Width(); const long nHeight = pRAcc->Height(); PopularColorCount* pCountTable = new PopularColorCount[ nTotalColors ]; long nX, nY, nR, nG, nB, nIndex; memset( pCountTable, 0, nTotalColors * sizeof( PopularColorCount ) ); for( nR = 0, nIndex = 0; nR < 256; nR += nColorOffset ) { for( nG = 0; nG < 256; nG += nColorOffset ) { for( nB = 0; nB < 256; nB += nColorOffset ) { pCountTable[ nIndex ].mnIndex = nIndex; nIndex++; } } } if( pRAcc->HasPalette() ) { for( nY = 0L; nY < nHeight; nY++ ) { for( nX = 0L; nX < nWidth; nX++ ) { const BitmapColor& rCol = pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ); pCountTable[ ( ( ( (sal_uInt32) rCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | ( ( ( (sal_uInt32) rCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | ( ( (sal_uInt32) rCol.GetBlue() ) >> nRightShiftBits ) ].mnCount++; } } } else { for( nY = 0L; nY < nHeight; nY++ ) { for( nX = 0L; nX < nWidth; nX++ ) { const BitmapColor aCol( pRAcc->GetPixel( nY, nX ) ); pCountTable[ ( ( ( (sal_uInt32) aCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | ( ( ( (sal_uInt32) aCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | ( ( (sal_uInt32) aCol.GetBlue() ) >> nRightShiftBits ) ].mnCount++; } } } BitmapPalette aNewPal( nColCount ); qsort( pCountTable, nTotalColors, sizeof( PopularColorCount ), ImplPopularCmpFnc ); for( sal_uInt16 n = 0; n < nColCount; n++ ) { const PopularColorCount& rPop = pCountTable[ n ]; aNewPal[ n ] = BitmapColor( (sal_uInt8) ( ( rPop.mnIndex >> nLeftShiftBits2 ) << nRightShiftBits ), (sal_uInt8) ( ( ( rPop.mnIndex >> nLeftShiftBits1 ) & ( nColorsPerComponent - 1 ) ) << nRightShiftBits ), (sal_uInt8) ( ( rPop.mnIndex & ( nColorsPerComponent - 1 ) ) << nRightShiftBits ) ); } Bitmap aNewBmp( GetSizePixel(), nBitCount, &aNewPal ); BitmapWriteAccess* pWAcc = aNewBmp.AcquireWriteAccess(); if( pWAcc ) { BitmapColor aDstCol( (sal_uInt8) 0 ); sal_uInt8* pIndexMap = new sal_uInt8[ nTotalColors ]; for( nR = 0, nIndex = 0; nR < 256; nR += nColorOffset ) for( nG = 0; nG < 256; nG += nColorOffset ) for( nB = 0; nB < 256; nB += nColorOffset ) pIndexMap[ nIndex++ ] = (sal_uInt8) aNewPal.GetBestIndex( BitmapColor( (sal_uInt8) nR, (sal_uInt8) nG, (sal_uInt8) nB ) ); if( pRAcc->HasPalette() ) { for( nY = 0L; nY < nHeight; nY++ ) { for( nX = 0L; nX < nWidth; nX++ ) { const BitmapColor& rCol = pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ); aDstCol.SetIndex( pIndexMap[ ( ( ( (sal_uInt32) rCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | ( ( ( (sal_uInt32) rCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | ( ( (sal_uInt32) rCol.GetBlue() ) >> nRightShiftBits ) ] ); pWAcc->SetPixel( nY, nX, aDstCol ); } } } else { for( nY = 0L; nY < nHeight; nY++ ) { for( nX = 0L; nX < nWidth; nX++ ) { const BitmapColor aCol( pRAcc->GetPixel( nY, nX ) ); aDstCol.SetIndex( pIndexMap[ ( ( ( (sal_uInt32) aCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | ( ( ( (sal_uInt32) aCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | ( ( (sal_uInt32) aCol.GetBlue() ) >> nRightShiftBits ) ] ); pWAcc->SetPixel( nY, nX, aDstCol ); } } } delete[] pIndexMap; aNewBmp.ReleaseAccess( pWAcc ); bRet = sal_True; } delete[] pCountTable; ReleaseAccess( pRAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } } return bRet; } sal_Bool Bitmap::ImplReduceMedian( sal_uInt16 nColCount ) { BitmapReadAccess* pRAcc = AcquireReadAccess(); sal_uInt16 nBitCount; sal_Bool bRet = sal_False; if( nColCount < 17 ) nBitCount = 4; else if( nColCount < 257 ) nBitCount = 8; else { OSL_FAIL( "Bitmap::ImplReduceMedian(): invalid color count!" ); nBitCount = 8; nColCount = 256; } if( pRAcc ) { Bitmap aNewBmp( GetSizePixel(), nBitCount ); BitmapWriteAccess* pWAcc = aNewBmp.AcquireWriteAccess(); if( pWAcc ) { const sal_uLong nSize = 32768UL * sizeof( sal_uLong ); sal_uLong* pColBuf = (sal_uLong*) rtl_allocateMemory( nSize ); const long nWidth = pWAcc->Width(); const long nHeight = pWAcc->Height(); long nIndex = 0L; memset( (HPBYTE) pColBuf, 0, nSize ); // create Buffer if( pRAcc->HasPalette() ) { for( long nY = 0L; nY < nHeight; nY++ ) { for( long nX = 0L; nX < nWidth; nX++ ) { const BitmapColor& rCol = pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ); pColBuf[ RGB15( rCol.GetRed() >> 3, rCol.GetGreen() >> 3, rCol.GetBlue() >> 3 ) ]++; } } } else { for( long nY = 0L; nY < nHeight; nY++ ) { for( long nX = 0L; nX < nWidth; nX++ ) { const BitmapColor aCol( pRAcc->GetPixel( nY, nX ) ); pColBuf[ RGB15( aCol.GetRed() >> 3, aCol.GetGreen() >> 3, aCol.GetBlue() >> 3 ) ]++; } } } // create palette via median cut BitmapPalette aPal( pWAcc->GetPaletteEntryCount() ); ImplMedianCut( pColBuf, aPal, 0, 31, 0, 31, 0, 31, nColCount, nWidth * nHeight, nIndex ); // do mapping of colors to palette InverseColorMap aMap( aPal ); pWAcc->SetPalette( aPal ); for( long nY = 0L; nY < nHeight; nY++ ) for( long nX = 0L; nX < nWidth; nX++ ) pWAcc->SetPixel( nY, nX, (sal_uInt8) aMap.GetBestPaletteIndex( pRAcc->GetColor( nY, nX ) ) ); rtl_freeMemory( pColBuf ); aNewBmp.ReleaseAccess( pWAcc ); bRet = sal_True; } ReleaseAccess( pRAcc ); if( bRet ) { const MapMode aMap( maPrefMapMode ); const Size aSize( maPrefSize ); *this = aNewBmp; maPrefMapMode = aMap; maPrefSize = aSize; } } return bRet; } void Bitmap::ImplMedianCut( sal_uLong* pColBuf, BitmapPalette& rPal, long nR1, long nR2, long nG1, long nG2, long nB1, long nB2, long nColors, long nPixels, long& rIndex ) { if( !nPixels ) return; BitmapColor aCol; const long nRLen = nR2 - nR1; const long nGLen = nG2 - nG1; const long nBLen = nB2 - nB1; sal_uLong* pBuf = pColBuf; if( !nRLen && !nGLen && !nBLen ) { if( pBuf[ RGB15( nR1, nG1, nB1 ) ] ) { aCol.SetRed( (sal_uInt8) ( nR1 << 3 ) ); aCol.SetGreen( (sal_uInt8) ( nG1 << 3 ) ); aCol.SetBlue( (sal_uInt8) ( nB1 << 3 ) ); rPal[ (sal_uInt16) rIndex++ ] = aCol; } } else { if( 1 == nColors || 1 == nPixels ) { long nPixSum = 0, nRSum = 0, nGSum = 0, nBSum = 0; for( long nR = nR1; nR <= nR2; nR++ ) { for( long nG = nG1; nG <= nG2; nG++ ) { for( long nB = nB1; nB <= nB2; nB++ ) { nPixSum = pBuf[ RGB15( nR, nG, nB ) ]; if( nPixSum ) { nRSum += nR * nPixSum; nGSum += nG * nPixSum; nBSum += nB * nPixSum; } } } } aCol.SetRed( (sal_uInt8) ( ( nRSum / nPixels ) << 3 ) ); aCol.SetGreen( (sal_uInt8) ( ( nGSum / nPixels ) << 3 ) ); aCol.SetBlue( (sal_uInt8) ( ( nBSum / nPixels ) << 3 ) ); rPal[ (sal_uInt16) rIndex++ ] = aCol; } else { const long nTest = ( nPixels >> 1 ); long nPixOld = 0; long nPixNew = 0; if( nBLen > nGLen && nBLen > nRLen ) { long nB = nB1 - 1; while( nPixNew < nTest ) { nB++, nPixOld = nPixNew; for( long nR = nR1; nR <= nR2; nR++ ) for( long nG = nG1; nG <= nG2; nG++ ) nPixNew += pBuf[ RGB15( nR, nG, nB ) ]; } if( nB < nB2 ) { ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB1, nB, nColors >> 1, nPixNew, rIndex ); ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB + 1, nB2, nColors >> 1, nPixels - nPixNew, rIndex ); } else { ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB1, nB - 1, nColors >> 1, nPixOld, rIndex ); ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB, nB2, nColors >> 1, nPixels - nPixOld, rIndex ); } } else if( nGLen > nRLen ) { long nG = nG1 - 1; while( nPixNew < nTest ) { nG++, nPixOld = nPixNew; for( long nR = nR1; nR <= nR2; nR++ ) for( long nB = nB1; nB <= nB2; nB++ ) nPixNew += pBuf[ RGB15( nR, nG, nB ) ]; } if( nG < nG2 ) { ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG, nB1, nB2, nColors >> 1, nPixNew, rIndex ); ImplMedianCut( pBuf, rPal, nR1, nR2, nG + 1, nG2, nB1, nB2, nColors >> 1, nPixels - nPixNew, rIndex ); } else { ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG - 1, nB1, nB2, nColors >> 1, nPixOld, rIndex ); ImplMedianCut( pBuf, rPal, nR1, nR2, nG, nG2, nB1, nB2, nColors >> 1, nPixels - nPixOld, rIndex ); } } else { long nR = nR1 - 1; while( nPixNew < nTest ) { nR++, nPixOld = nPixNew; for( long nG = nG1; nG <= nG2; nG++ ) for( long nB = nB1; nB <= nB2; nB++ ) nPixNew += pBuf[ RGB15( nR, nG, nB ) ]; } if( nR < nR2 ) { ImplMedianCut( pBuf, rPal, nR1, nR, nG1, nG2, nB1, nB2, nColors >> 1, nPixNew, rIndex ); ImplMedianCut( pBuf, rPal, nR1 + 1, nR2, nG1, nG2, nB1, nB2, nColors >> 1, nPixels - nPixNew, rIndex ); } else { ImplMedianCut( pBuf, rPal, nR1, nR - 1, nG1, nG2, nB1, nB2, nColors >> 1, nPixOld, rIndex ); ImplMedianCut( pBuf, rPal, nR, nR2, nG1, nG2, nB1, nB2, nColors >> 1, nPixels - nPixOld, rIndex ); } } } } } sal_Bool Bitmap::Vectorize( PolyPolygon& rPolyPoly, sal_uLong nFlags, const Link* pProgress ) { return ImplVectorizer().ImplVectorize( *this, rPolyPoly, nFlags, pProgress ); } sal_Bool Bitmap::Vectorize( GDIMetaFile& rMtf, sal_uInt8 cReduce, sal_uLong nFlags, const Link* pProgress ) { return ImplVectorizer().ImplVectorize( *this, rMtf, cReduce, nFlags, pProgress ); } sal_Bool Bitmap::Adjust( short nLuminancePercent, short nContrastPercent, short nChannelRPercent, short nChannelGPercent, short nChannelBPercent, double fGamma, sal_Bool bInvert ) { sal_Bool bRet = sal_False; // nothing to do => return quickly if( !nLuminancePercent && !nContrastPercent && !nChannelRPercent && !nChannelGPercent && !nChannelBPercent && ( fGamma == 1.0 ) && !bInvert ) { bRet = sal_True; } else { BitmapWriteAccess* pAcc = AcquireWriteAccess(); if( pAcc ) { BitmapColor aCol; const long nW = pAcc->Width(); const long nH = pAcc->Height(); sal_uInt8* cMapR = new sal_uInt8[ 256 ]; sal_uInt8* cMapG = new sal_uInt8[ 256 ]; sal_uInt8* cMapB = new sal_uInt8[ 256 ]; long nX, nY; double fM, fROff, fGOff, fBOff, fOff; // calculate slope if( nContrastPercent >= 0 ) fM = 128.0 / ( 128.0 - 1.27 * MinMax( nContrastPercent, 0L, 100L ) ); else fM = ( 128.0 + 1.27 * MinMax( nContrastPercent, -100L, 0L ) ) / 128.0; // total offset = luminance offset + contrast offset fOff = MinMax( nLuminancePercent, -100L, 100L ) * 2.55 + 128.0 - fM * 128.0; // channel offset = channel offset + total offset fROff = nChannelRPercent * 2.55 + fOff; fGOff = nChannelGPercent * 2.55 + fOff; fBOff = nChannelBPercent * 2.55 + fOff; // calculate gamma value fGamma = ( fGamma <= 0.0 || fGamma > 10.0 ) ? 1.0 : ( 1.0 / fGamma ); const sal_Bool bGamma = ( fGamma != 1.0 ); // create mapping table for( nX = 0L; nX < 256L; nX++ ) { cMapR[ nX ] = (sal_uInt8) MinMax( FRound( nX * fM + fROff ), 0L, 255L ); cMapG[ nX ] = (sal_uInt8) MinMax( FRound( nX * fM + fGOff ), 0L, 255L ); cMapB[ nX ] = (sal_uInt8) MinMax( FRound( nX * fM + fBOff ), 0L, 255L ); if( bGamma ) { cMapR[ nX ] = GAMMA( cMapR[ nX ], fGamma ); cMapG[ nX ] = GAMMA( cMapG[ nX ], fGamma ); cMapB[ nX ] = GAMMA( cMapB[ nX ], fGamma ); } if( bInvert ) { cMapR[ nX ] = ~cMapR[ nX ]; cMapG[ nX ] = ~cMapG[ nX ]; cMapB[ nX ] = ~cMapB[ nX ]; } } // do modifying if( pAcc->HasPalette() ) { BitmapColor aNewCol; for( sal_uInt16 i = 0, nCount = pAcc->GetPaletteEntryCount(); i < nCount; i++ ) { const BitmapColor& rCol = pAcc->GetPaletteColor( i ); aNewCol.SetRed( cMapR[ rCol.GetRed() ] ); aNewCol.SetGreen( cMapG[ rCol.GetGreen() ] ); aNewCol.SetBlue( cMapB[ rCol.GetBlue() ] ); pAcc->SetPaletteColor( i, aNewCol ); } } else if( pAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_BGR ) { for( nY = 0L; nY < nH; nY++ ) { Scanline pScan = pAcc->GetScanline( nY ); for( nX = 0L; nX < nW; nX++ ) { *pScan = cMapB[ *pScan ]; pScan++; *pScan = cMapG[ *pScan ]; pScan++; *pScan = cMapR[ *pScan ]; pScan++; } } } else if( pAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_RGB ) { for( nY = 0L; nY < nH; nY++ ) { Scanline pScan = pAcc->GetScanline( nY ); for( nX = 0L; nX < nW; nX++ ) { *pScan = cMapR[ *pScan ]; pScan++; *pScan = cMapG[ *pScan ]; pScan++; *pScan = cMapB[ *pScan ]; pScan++; } } } else { for( nY = 0L; nY < nH; nY++ ) { for( nX = 0L; nX < nW; nX++ ) { aCol = pAcc->GetPixel( nY, nX ); aCol.SetRed( cMapR[ aCol.GetRed() ] ); aCol.SetGreen( cMapG[ aCol.GetGreen() ] ); aCol.SetBlue( cMapB[ aCol.GetBlue() ] ); pAcc->SetPixel( nY, nX, aCol ); } } } delete[] cMapR; delete[] cMapG; delete[] cMapB; ReleaseAccess( pAcc ); bRet = sal_True; } } return bRet; } bool Bitmap::ImplScaleConvolution( const double& rScaleX, const double& rScaleY, Kernel& aKernel ) { const long nWidth = GetSizePixel().Width(); const long nHeight = GetSizePixel().Height(); const long nNewWidth = FRound( nWidth * rScaleX ); const long nNewHeight = FRound( nHeight * rScaleY ); bool bResult; BitmapReadAccess* pReadAcc; Bitmap aNewBitmap; int aNumberOfContributions; double* pWeights; int* pPixels; int* pCount; // Do horizontal filtering ImplCalculateContributions( nWidth, nNewWidth, aNumberOfContributions, pWeights, pPixels, pCount, aKernel ); pReadAcc = AcquireReadAccess(); aNewBitmap = Bitmap( Size( nHeight, nNewWidth ), 24); bResult = ImplConvolutionPass( aNewBitmap, nNewWidth, pReadAcc, aNumberOfContributions, pWeights, pPixels, pCount ); ReleaseAccess( pReadAcc ); delete[] pWeights; delete[] pCount; delete[] pPixels; if ( !bResult ) return bResult; // Swap Bitmaps ImplAssignWithSize( aNewBitmap ); // Do vertical filtering ImplCalculateContributions( nHeight, nNewHeight, aNumberOfContributions, pWeights, pPixels, pCount, aKernel ); pReadAcc = AcquireReadAccess(); aNewBitmap = Bitmap( Size( nNewWidth, nNewHeight ), 24); bResult = ImplConvolutionPass( aNewBitmap, nNewHeight, pReadAcc, aNumberOfContributions, pWeights, pPixels, pCount ); ReleaseAccess( pReadAcc ); delete[] pWeights; delete[] pCount; delete[] pPixels; if ( !bResult ) return bResult; ImplAssignWithSize( aNewBitmap ); return true; } void Bitmap::ImplCalculateContributions( const int aSourceSize, const int aDestinationSize, int& aNumberOfContributions, double*& pWeights, int*& pPixels, int*& pCount, Kernel& aKernel) { const double aSamplingRadius = aKernel.GetWidth(); const double aScale = aDestinationSize / (double) aSourceSize; const double aScaledRadius = (aScale < 1.0) ? aSamplingRadius / aScale : aSamplingRadius; const double aFilterFactor = (aScale < 1.0) ? aScale : 1.0; aNumberOfContributions = (int) ( 2 * ceil(aScaledRadius) + 1 ); pWeights = new double[ aDestinationSize*aNumberOfContributions ]; pPixels = new int[ aDestinationSize*aNumberOfContributions ]; pCount = new int[ aDestinationSize ]; double aWeight, aCenter; int aIndex, aLeft, aRight; int aPixelIndex, aCurrentCount; for ( int i = 0; i < aDestinationSize; i++ ) { aIndex = i * aNumberOfContributions; aCurrentCount = 0; aCenter = i / aScale; aLeft = (int) floor(aCenter - aScaledRadius); aRight = (int) ceil (aCenter + aScaledRadius); for ( int j = aLeft; j <= aRight; j++ ) { aWeight = aKernel.Calculate( aFilterFactor * ( aCenter - (double) j ) ); // Reduce calculations with ignoring weights of 0.0 if (fabs(aWeight) < 0.0001) continue; // Handling on edges aPixelIndex = MinMax( j, 0, aSourceSize - 1); pWeights[ aIndex + aCurrentCount ] = aWeight; pPixels[ aIndex + aCurrentCount ] = aPixelIndex; aCurrentCount++; } pCount[ i ] = aCurrentCount; } } bool Bitmap::ImplConvolutionPass(Bitmap& aNewBitmap, const int nNewSize, BitmapReadAccess* pReadAcc, int aNumberOfContributions, double* pWeights, int* pPixels, int* pCount) { BitmapWriteAccess* pWriteAcc = aNewBitmap.AcquireWriteAccess(); if (!pReadAcc || !pWriteAcc) return false; const int nHeight = GetSizePixel().Height(); BitmapColor aColor; double aValueRed, aValueGreen, aValueBlue; double aSum, aWeight; int aBaseIndex, aIndex; for ( int y = 0; y < nHeight; y++ ) { for ( int x = 0; x < nNewSize; x++ ) { aBaseIndex = x * aNumberOfContributions; aSum = aValueRed = aValueGreen = aValueBlue = 0.0; for ( int j=0; j < pCount[x]; j++ ) { aIndex = aBaseIndex + j; aSum += aWeight = pWeights[ aIndex ]; aColor = pReadAcc->GetPixel( y, pPixels[ aIndex ] ); if( pReadAcc->HasPalette() ) aColor = pReadAcc->GetPaletteColor( aColor ); aValueRed += aWeight * aColor.GetRed(); aValueGreen += aWeight * aColor.GetGreen(); aValueBlue += aWeight * aColor.GetBlue(); } BitmapColor aResultColor( (sal_uInt8) MinMax( aValueRed / aSum, 0, 255 ), (sal_uInt8) MinMax( aValueGreen / aSum, 0, 255 ), (sal_uInt8) MinMax( aValueBlue / aSum, 0, 255 ) ); pWriteAcc->SetPixel( x, y, aResultColor ); } } aNewBitmap.ReleaseAccess( pWriteAcc ); return true; } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */