1*9f62ea84SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*9f62ea84SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*9f62ea84SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*9f62ea84SAndrew Rist * distributed with this work for additional information 6*9f62ea84SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*9f62ea84SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*9f62ea84SAndrew Rist * "License"); you may not use this file except in compliance 9*9f62ea84SAndrew Rist * with the License. You may obtain a copy of the License at 10*9f62ea84SAndrew Rist * 11*9f62ea84SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*9f62ea84SAndrew Rist * 13*9f62ea84SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*9f62ea84SAndrew Rist * software distributed under the License is distributed on an 15*9f62ea84SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*9f62ea84SAndrew Rist * KIND, either express or implied. See the License for the 17*9f62ea84SAndrew Rist * specific language governing permissions and limitations 18*9f62ea84SAndrew Rist * under the License. 19*9f62ea84SAndrew Rist * 20*9f62ea84SAndrew Rist *************************************************************/ 21*9f62ea84SAndrew Rist 22*9f62ea84SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove 25cdf0e10cSrcweir #include "precompiled_vcl.hxx" 26cdf0e10cSrcweir 27cdf0e10cSrcweir #include <stdlib.h> 28cdf0e10cSrcweir 29cdf0e10cSrcweir #include <vcl/bmpacc.hxx> 30cdf0e10cSrcweir #include <vcl/octree.hxx> 31cdf0e10cSrcweir #include <vcl/bitmapex.hxx> 32cdf0e10cSrcweir #include <vcl/bitmap.hxx> 33cdf0e10cSrcweir 34cdf0e10cSrcweir #include <impoct.hxx> 35cdf0e10cSrcweir #include <impvect.hxx> 36cdf0e10cSrcweir 37cdf0e10cSrcweir // ----------- 38cdf0e10cSrcweir // - Defines - 39cdf0e10cSrcweir // ----------- 40cdf0e10cSrcweir 41cdf0e10cSrcweir #define RGB15( _def_cR, _def_cG, _def_cB ) (((sal_uLong)(_def_cR)<<10UL)|((sal_uLong)(_def_cG)<<5UL)|(sal_uLong)(_def_cB)) 42cdf0e10cSrcweir #define GAMMA( _def_cVal, _def_InvGamma ) ((sal_uInt8)MinMax(FRound(pow( _def_cVal/255.0,_def_InvGamma)*255.0),0L,255L)) 43cdf0e10cSrcweir 44cdf0e10cSrcweir #define CALC_ERRORS \ 45cdf0e10cSrcweir nTemp = p1T[nX++] >> 12; \ 46cdf0e10cSrcweir nBErr = MinMax( nTemp, 0, 255 ); \ 47cdf0e10cSrcweir nBErr = nBErr - FloydIndexMap[ nBC = FloydMap[nBErr] ]; \ 48cdf0e10cSrcweir nTemp = p1T[nX++] >> 12; \ 49cdf0e10cSrcweir nGErr = MinMax( nTemp, 0, 255 ); \ 50cdf0e10cSrcweir nGErr = nGErr - FloydIndexMap[ nGC = FloydMap[nGErr] ]; \ 51cdf0e10cSrcweir nTemp = p1T[nX] >> 12; \ 52cdf0e10cSrcweir nRErr = MinMax( nTemp, 0, 255 ); \ 53cdf0e10cSrcweir nRErr = nRErr - FloydIndexMap[ nRC = FloydMap[nRErr] ]; 54cdf0e10cSrcweir 55cdf0e10cSrcweir #define CALC_TABLES3 \ 56cdf0e10cSrcweir p2T[nX++] += FloydError3[nBErr]; \ 57cdf0e10cSrcweir p2T[nX++] += FloydError3[nGErr]; \ 58cdf0e10cSrcweir p2T[nX++] += FloydError3[nRErr]; 59cdf0e10cSrcweir 60cdf0e10cSrcweir #define CALC_TABLES5 \ 61cdf0e10cSrcweir p2T[nX++] += FloydError5[nBErr]; \ 62cdf0e10cSrcweir p2T[nX++] += FloydError5[nGErr]; \ 63cdf0e10cSrcweir p2T[nX++] += FloydError5[nRErr]; 64cdf0e10cSrcweir 65cdf0e10cSrcweir #define CALC_TABLES7 \ 66cdf0e10cSrcweir p1T[++nX] += FloydError7[nBErr]; \ 67cdf0e10cSrcweir p2T[nX++] += FloydError1[nBErr]; \ 68cdf0e10cSrcweir p1T[nX] += FloydError7[nGErr]; \ 69cdf0e10cSrcweir p2T[nX++] += FloydError1[nGErr]; \ 70cdf0e10cSrcweir p1T[nX] += FloydError7[nRErr]; \ 71cdf0e10cSrcweir p2T[nX] += FloydError1[nRErr]; 72cdf0e10cSrcweir 73cdf0e10cSrcweir // ----------- 74cdf0e10cSrcweir // - Statics - 75cdf0e10cSrcweir // ----------- 76cdf0e10cSrcweir 77cdf0e10cSrcweir sal_uLong nVCLRLut[ 6 ] = { 16, 17, 18, 19, 20, 21 }; 78cdf0e10cSrcweir sal_uLong nVCLGLut[ 6 ] = { 0, 6, 12, 18, 24, 30 }; 79cdf0e10cSrcweir sal_uLong nVCLBLut[ 6 ] = { 0, 36, 72, 108, 144, 180 }; 80cdf0e10cSrcweir 81cdf0e10cSrcweir // ------------------------------------------------------------------------ 82cdf0e10cSrcweir 83cdf0e10cSrcweir sal_uLong nVCLDitherLut[ 256 ] = 84cdf0e10cSrcweir { 85cdf0e10cSrcweir 0, 49152, 12288, 61440, 3072, 52224, 15360, 64512, 768, 49920, 13056, 86cdf0e10cSrcweir 62208, 3840, 52992, 16128, 65280, 32768, 16384, 45056, 28672, 35840, 19456, 87cdf0e10cSrcweir 48128, 31744, 33536, 17152, 45824, 29440, 36608, 20224, 48896, 32512, 8192, 88cdf0e10cSrcweir 57344, 4096, 53248, 11264, 60416, 7168, 56320, 8960, 58112, 4864, 54016, 89cdf0e10cSrcweir 12032, 61184, 7936, 57088, 40960, 24576, 36864, 20480, 44032, 27648, 39936, 90cdf0e10cSrcweir 23552, 41728, 25344, 37632, 21248, 44800, 28416, 40704, 24320, 2048, 51200, 91cdf0e10cSrcweir 14336, 63488, 1024, 50176, 13312, 62464, 2816, 51968, 15104, 64256, 1792, 92cdf0e10cSrcweir 50944, 14080, 63232, 34816, 18432, 47104, 30720, 33792, 17408, 46080, 29696, 93cdf0e10cSrcweir 35584, 19200, 47872, 31488, 34560, 18176, 46848, 30464, 10240, 59392, 6144, 94cdf0e10cSrcweir 55296, 9216, 58368, 5120, 54272, 11008, 60160, 6912, 56064, 9984, 59136, 95cdf0e10cSrcweir 5888, 55040, 43008, 26624, 38912, 22528, 41984, 25600, 37888, 21504, 43776, 96cdf0e10cSrcweir 27392, 39680, 23296, 42752, 26368, 38656, 22272, 512, 49664, 12800, 61952, 97cdf0e10cSrcweir 3584, 52736, 15872, 65024, 256, 49408, 12544, 61696, 3328, 52480, 15616, 98cdf0e10cSrcweir 64768, 33280, 16896, 45568, 29184, 36352, 19968, 48640, 32256, 33024, 16640, 99cdf0e10cSrcweir 45312, 28928, 36096, 19712, 48384, 32000, 8704, 57856, 4608, 53760, 11776, 100cdf0e10cSrcweir 60928, 7680, 56832, 8448, 57600, 4352, 53504, 11520, 60672, 7424, 56576, 101cdf0e10cSrcweir 41472, 25088, 37376, 20992, 44544, 28160, 40448, 24064, 41216, 24832, 37120, 102cdf0e10cSrcweir 20736, 44288, 27904, 40192, 23808, 2560, 51712, 14848, 64000, 1536, 50688, 103cdf0e10cSrcweir 13824, 62976, 2304, 51456, 14592, 63744, 1280, 50432, 13568, 62720, 35328, 104cdf0e10cSrcweir 18944, 47616, 31232, 34304, 17920, 46592, 30208, 35072, 18688, 47360, 30976, 105cdf0e10cSrcweir 34048, 17664, 46336, 29952, 10752, 59904, 6656, 55808, 9728, 58880, 5632, 106cdf0e10cSrcweir 54784, 10496, 59648, 6400, 55552, 9472, 58624, 5376, 54528, 43520, 27136, 107cdf0e10cSrcweir 39424, 23040, 42496, 26112, 38400, 22016, 43264, 26880, 39168, 22784, 42240, 108cdf0e10cSrcweir 25856, 38144, 21760 109cdf0e10cSrcweir }; 110cdf0e10cSrcweir 111cdf0e10cSrcweir // ------------------------------------------------------------------------ 112cdf0e10cSrcweir 113cdf0e10cSrcweir sal_uLong nVCLLut[ 256 ] = 114cdf0e10cSrcweir { 115cdf0e10cSrcweir 0, 1286, 2572, 3858, 5144, 6430, 7716, 9002, 116cdf0e10cSrcweir 10288, 11574, 12860, 14146, 15432, 16718, 18004, 19290, 117cdf0e10cSrcweir 20576, 21862, 23148, 24434, 25720, 27006, 28292, 29578, 118cdf0e10cSrcweir 30864, 32150, 33436, 34722, 36008, 37294, 38580, 39866, 119cdf0e10cSrcweir 41152, 42438, 43724, 45010, 46296, 47582, 48868, 50154, 120cdf0e10cSrcweir 51440, 52726, 54012, 55298, 56584, 57870, 59156, 60442, 121cdf0e10cSrcweir 61728, 63014, 64300, 65586, 66872, 68158, 69444, 70730, 122cdf0e10cSrcweir 72016, 73302, 74588, 75874, 77160, 78446, 79732, 81018, 123cdf0e10cSrcweir 82304, 83590, 84876, 86162, 87448, 88734, 90020, 91306, 124cdf0e10cSrcweir 92592, 93878, 95164, 96450, 97736, 99022,100308,101594, 125cdf0e10cSrcweir 102880,104166,105452,106738,108024,109310,110596,111882, 126cdf0e10cSrcweir 113168,114454,115740,117026,118312,119598,120884,122170, 127cdf0e10cSrcweir 123456,124742,126028,127314,128600,129886,131172,132458, 128cdf0e10cSrcweir 133744,135030,136316,137602,138888,140174,141460,142746, 129cdf0e10cSrcweir 144032,145318,146604,147890,149176,150462,151748,153034, 130cdf0e10cSrcweir 154320,155606,156892,158178,159464,160750,162036,163322, 131cdf0e10cSrcweir 164608,165894,167180,168466,169752,171038,172324,173610, 132cdf0e10cSrcweir 174896,176182,177468,178754,180040,181326,182612,183898, 133cdf0e10cSrcweir 185184,186470,187756,189042,190328,191614,192900,194186, 134cdf0e10cSrcweir 195472,196758,198044,199330,200616,201902,203188,204474, 135cdf0e10cSrcweir 205760,207046,208332,209618,210904,212190,213476,214762, 136cdf0e10cSrcweir 216048,217334,218620,219906,221192,222478,223764,225050, 137cdf0e10cSrcweir 226336,227622,228908,230194,231480,232766,234052,235338, 138cdf0e10cSrcweir 236624,237910,239196,240482,241768,243054,244340,245626, 139cdf0e10cSrcweir 246912,248198,249484,250770,252056,253342,254628,255914, 140cdf0e10cSrcweir 257200,258486,259772,261058,262344,263630,264916,266202, 141cdf0e10cSrcweir 267488,268774,270060,271346,272632,273918,275204,276490, 142cdf0e10cSrcweir 277776,279062,280348,281634,282920,284206,285492,286778, 143cdf0e10cSrcweir 288064,289350,290636,291922,293208,294494,295780,297066, 144cdf0e10cSrcweir 298352,299638,300924,302210,303496,304782,306068,307354, 145cdf0e10cSrcweir 308640,309926,311212,312498,313784,315070,316356,317642, 146cdf0e10cSrcweir 318928,320214,321500,322786,324072,325358,326644,327930 147cdf0e10cSrcweir }; 148cdf0e10cSrcweir 149cdf0e10cSrcweir // ------------------------------------------------------------------------ 150cdf0e10cSrcweir 151cdf0e10cSrcweir long FloydMap[256] = 152cdf0e10cSrcweir { 153cdf0e10cSrcweir 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 154cdf0e10cSrcweir 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 155cdf0e10cSrcweir 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 156cdf0e10cSrcweir 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 157cdf0e10cSrcweir 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 158cdf0e10cSrcweir 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 159cdf0e10cSrcweir 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 160cdf0e10cSrcweir 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 161cdf0e10cSrcweir 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 162cdf0e10cSrcweir 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 163cdf0e10cSrcweir 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 164cdf0e10cSrcweir 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 165cdf0e10cSrcweir 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 166cdf0e10cSrcweir 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 167cdf0e10cSrcweir 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 168cdf0e10cSrcweir 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 169cdf0e10cSrcweir }; 170cdf0e10cSrcweir 171cdf0e10cSrcweir // ------------------------------------------------------------------------ 172cdf0e10cSrcweir 173cdf0e10cSrcweir long FloydError1[61] = 174cdf0e10cSrcweir { 175cdf0e10cSrcweir -7680, -7424, -7168, -6912, -6656, -6400, -6144, 176cdf0e10cSrcweir -5888, -5632, -5376, -5120, -4864, -4608, -4352, 177cdf0e10cSrcweir -4096, -3840, -3584, -3328, -3072, -2816, -2560, 178cdf0e10cSrcweir -2304, -2048, -1792, -1536, -1280, -1024, -768, 179cdf0e10cSrcweir -512, -256, 0, 256, 512, 768, 1024, 1280, 1536, 180cdf0e10cSrcweir 1792, 2048, 2304, 2560, 2816, 3072, 3328, 3584, 181cdf0e10cSrcweir 3840, 4096, 4352, 4608, 4864, 5120, 5376, 5632, 182cdf0e10cSrcweir 5888, 6144, 6400, 6656, 6912, 7168, 7424, 7680 183cdf0e10cSrcweir }; 184cdf0e10cSrcweir 185cdf0e10cSrcweir // ------------------------------------------------------------------------ 186cdf0e10cSrcweir 187cdf0e10cSrcweir long FloydError3[61] = 188cdf0e10cSrcweir { 189cdf0e10cSrcweir -23040, -22272, -21504, -20736, -19968, -19200, 190cdf0e10cSrcweir -18432, -17664, -16896, -16128, -15360, -14592, 191cdf0e10cSrcweir -13824, -13056, -12288, -11520, -10752, -9984, 192cdf0e10cSrcweir -9216, -8448, -7680, -6912, -6144, -5376, -4608, 193cdf0e10cSrcweir -3840, -3072, -2304, -1536, -768, 0, 768, 1536, 194cdf0e10cSrcweir 2304, 3072, 3840, 4608, 5376, 6144, 6912, 7680, 195cdf0e10cSrcweir 8448, 9216, 9984, 10752, 11520, 12288, 13056, 196cdf0e10cSrcweir 13824, 14592, 15360, 16128, 16896, 17664, 18432, 197cdf0e10cSrcweir 19200, 19968, 20736, 21504, 22272, 23040 198cdf0e10cSrcweir }; 199cdf0e10cSrcweir 200cdf0e10cSrcweir // ------------------------------------------------------------------------ 201cdf0e10cSrcweir 202cdf0e10cSrcweir long FloydError5[61] = 203cdf0e10cSrcweir { 204cdf0e10cSrcweir -38400, -37120, -35840, -34560, -33280, -32000, 205cdf0e10cSrcweir -30720, -29440, -28160, -26880, -25600, -24320, 206cdf0e10cSrcweir -23040, -21760, -20480, -19200, -17920, -16640, 207cdf0e10cSrcweir -15360, -14080, -12800, -11520, -10240, -8960, 208cdf0e10cSrcweir -7680, -6400, -5120, -3840, -2560, -1280, 0, 209cdf0e10cSrcweir 1280, 2560, 3840, 5120, 6400, 7680, 8960, 10240, 210cdf0e10cSrcweir 11520, 12800, 14080, 15360, 16640, 17920, 19200, 211cdf0e10cSrcweir 20480, 21760, 23040, 24320, 25600, 26880, 28160, 212cdf0e10cSrcweir 29440, 30720, 32000, 33280, 34560, 35840, 37120, 213cdf0e10cSrcweir 38400 214cdf0e10cSrcweir }; 215cdf0e10cSrcweir 216cdf0e10cSrcweir // ------------------------------------------------------------------------ 217cdf0e10cSrcweir 218cdf0e10cSrcweir long FloydError7[61] = 219cdf0e10cSrcweir { 220cdf0e10cSrcweir -53760, -51968, -50176, -48384, -46592, -44800, 221cdf0e10cSrcweir -43008, -41216, -39424, -37632, -35840, -34048, 222cdf0e10cSrcweir -32256, -30464, -28672, -26880, -25088, -23296, 223cdf0e10cSrcweir -21504, -19712, -17920, -16128, -14336, -12544, 224cdf0e10cSrcweir -10752, -8960, -7168, -5376, -3584, -1792, 0, 225cdf0e10cSrcweir 1792, 3584, 5376, 7168, 8960, 10752, 12544, 14336, 226cdf0e10cSrcweir 16128, 17920, 19712, 21504, 23296, 25088, 26880, 227cdf0e10cSrcweir 28672, 30464, 32256, 34048, 35840, 37632, 39424, 228cdf0e10cSrcweir 41216, 43008, 44800, 46592, 48384, 50176, 51968, 229cdf0e10cSrcweir 53760 230cdf0e10cSrcweir }; 231cdf0e10cSrcweir 232cdf0e10cSrcweir // ------------------------------------------------------------------------ 233cdf0e10cSrcweir 234cdf0e10cSrcweir long FloydIndexMap[6] = 235cdf0e10cSrcweir { 236cdf0e10cSrcweir -30, 21, 72, 123, 174, 225 237cdf0e10cSrcweir }; 238cdf0e10cSrcweir 239cdf0e10cSrcweir // -------------------------- 240cdf0e10cSrcweir // - ImplCreateDitherMatrix - 241cdf0e10cSrcweir // -------------------------- 242cdf0e10cSrcweir 243cdf0e10cSrcweir void ImplCreateDitherMatrix( sal_uInt8 (*pDitherMatrix)[16][16] ) 244cdf0e10cSrcweir { 245cdf0e10cSrcweir double fVal = 3.125; 246cdf0e10cSrcweir const double fVal16 = fVal / 16.; 247cdf0e10cSrcweir long i, j, k, l; 248cdf0e10cSrcweir sal_uInt16 pMtx[ 16 ][ 16 ]; 249cdf0e10cSrcweir sal_uInt16 nMax = 0; 250cdf0e10cSrcweir static sal_uInt8 pMagic[4][4] = { { 0, 14, 3, 13, }, 251cdf0e10cSrcweir {11, 5, 8, 6, }, 252cdf0e10cSrcweir {12, 2, 15, 1, }, 253cdf0e10cSrcweir {7, 9, 4, 10 } }; 254cdf0e10cSrcweir 255cdf0e10cSrcweir // MagicSquare aufbauen 256cdf0e10cSrcweir for ( i = 0; i < 4; i++ ) 257cdf0e10cSrcweir for ( j = 0; j < 4; j++ ) 258cdf0e10cSrcweir for ( k = 0; k < 4; k++ ) 259cdf0e10cSrcweir for ( l = 0; l < 4; l++ ) 260cdf0e10cSrcweir nMax = Max ( pMtx[ (k<<2) + i][(l<<2 ) + j] = 261cdf0e10cSrcweir (sal_uInt16) ( 0.5 + pMagic[i][j]*fVal + pMagic[k][l]*fVal16 ), nMax ); 262cdf0e10cSrcweir 263cdf0e10cSrcweir // auf Intervall [0;254] skalieren 264cdf0e10cSrcweir for ( i = 0, fVal = 254. / nMax; i < 16; i++ ) 265cdf0e10cSrcweir for( j = 0; j < 16; j++ ) 266cdf0e10cSrcweir (*pDitherMatrix)[i][j] = (sal_uInt8) ( fVal * pMtx[i][j] ); 267cdf0e10cSrcweir } 268cdf0e10cSrcweir 269cdf0e10cSrcweir // ---------- 270cdf0e10cSrcweir // - Bitmap - 271cdf0e10cSrcweir // ---------- 272cdf0e10cSrcweir 273cdf0e10cSrcweir sal_Bool Bitmap::Convert( BmpConversion eConversion ) 274cdf0e10cSrcweir { 275cdf0e10cSrcweir const sal_uInt16 nBitCount = GetBitCount(); 276cdf0e10cSrcweir sal_Bool bRet = sal_False; 277cdf0e10cSrcweir 278cdf0e10cSrcweir switch( eConversion ) 279cdf0e10cSrcweir { 280cdf0e10cSrcweir case( BMP_CONVERSION_1BIT_THRESHOLD ): 281cdf0e10cSrcweir bRet = ImplMakeMono( 128 ); 282cdf0e10cSrcweir break; 283cdf0e10cSrcweir 284cdf0e10cSrcweir case( BMP_CONVERSION_1BIT_MATRIX ): 285cdf0e10cSrcweir bRet = ImplMakeMonoDither(); 286cdf0e10cSrcweir break; 287cdf0e10cSrcweir 288cdf0e10cSrcweir case( BMP_CONVERSION_4BIT_GREYS ): 289cdf0e10cSrcweir bRet = ImplMakeGreyscales( 16 ); 290cdf0e10cSrcweir break; 291cdf0e10cSrcweir 292cdf0e10cSrcweir case( BMP_CONVERSION_4BIT_COLORS ): 293cdf0e10cSrcweir { 294cdf0e10cSrcweir if( nBitCount < 4 ) 295cdf0e10cSrcweir bRet = ImplConvertUp( 4, NULL ); 296cdf0e10cSrcweir else if( nBitCount > 4 ) 297cdf0e10cSrcweir bRet = ImplConvertDown( 4, NULL ); 298cdf0e10cSrcweir else 299cdf0e10cSrcweir bRet = sal_True; 300cdf0e10cSrcweir } 301cdf0e10cSrcweir break; 302cdf0e10cSrcweir 303cdf0e10cSrcweir case( BMP_CONVERSION_4BIT_TRANS ): 304cdf0e10cSrcweir { 305cdf0e10cSrcweir Color aTrans( BMP_COL_TRANS ); 306cdf0e10cSrcweir 307cdf0e10cSrcweir if( nBitCount < 4 ) 308cdf0e10cSrcweir bRet = ImplConvertUp( 4, &aTrans ); 309cdf0e10cSrcweir else 310cdf0e10cSrcweir bRet = ImplConvertDown( 4, &aTrans ); 311cdf0e10cSrcweir } 312cdf0e10cSrcweir break; 313cdf0e10cSrcweir 314cdf0e10cSrcweir case( BMP_CONVERSION_8BIT_GREYS ): 315cdf0e10cSrcweir bRet = ImplMakeGreyscales( 256 ); 316cdf0e10cSrcweir break; 317cdf0e10cSrcweir 318cdf0e10cSrcweir case( BMP_CONVERSION_8BIT_COLORS ): 319cdf0e10cSrcweir { 320cdf0e10cSrcweir if( nBitCount < 8 ) 321cdf0e10cSrcweir bRet = ImplConvertUp( 8 ); 322cdf0e10cSrcweir else if( nBitCount > 8 ) 323cdf0e10cSrcweir bRet = ImplConvertDown( 8 ); 324cdf0e10cSrcweir else 325cdf0e10cSrcweir bRet = sal_True; 326cdf0e10cSrcweir } 327cdf0e10cSrcweir break; 328cdf0e10cSrcweir 329cdf0e10cSrcweir case( BMP_CONVERSION_8BIT_TRANS ): 330cdf0e10cSrcweir { 331cdf0e10cSrcweir Color aTrans( BMP_COL_TRANS ); 332cdf0e10cSrcweir 333cdf0e10cSrcweir if( nBitCount < 8 ) 334cdf0e10cSrcweir bRet = ImplConvertUp( 8, &aTrans ); 335cdf0e10cSrcweir else 336cdf0e10cSrcweir bRet = ImplConvertDown( 8, &aTrans ); 337cdf0e10cSrcweir } 338cdf0e10cSrcweir break; 339cdf0e10cSrcweir 340cdf0e10cSrcweir case( BMP_CONVERSION_24BIT ): 341cdf0e10cSrcweir { 342cdf0e10cSrcweir if( nBitCount < 24 ) 343cdf0e10cSrcweir bRet = ImplConvertUp( 24, sal_False ); 344cdf0e10cSrcweir else 345cdf0e10cSrcweir bRet = sal_True; 346cdf0e10cSrcweir } 347cdf0e10cSrcweir break; 348cdf0e10cSrcweir 349cdf0e10cSrcweir case( BMP_CONVERSION_GHOSTED ): 350cdf0e10cSrcweir bRet = ImplConvertGhosted(); 351cdf0e10cSrcweir break; 352cdf0e10cSrcweir 353cdf0e10cSrcweir default: 354cdf0e10cSrcweir DBG_ERROR( "Bitmap::Convert(): Unsupported conversion" ); 355cdf0e10cSrcweir break; 356cdf0e10cSrcweir } 357cdf0e10cSrcweir 358cdf0e10cSrcweir return bRet; 359cdf0e10cSrcweir } 360cdf0e10cSrcweir 361cdf0e10cSrcweir // ------------------------------------------------------------------------ 362cdf0e10cSrcweir 363cdf0e10cSrcweir sal_Bool Bitmap::ImplMakeMono( sal_uInt8 cThreshold ) 364cdf0e10cSrcweir { 365cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 366cdf0e10cSrcweir sal_Bool bRet = sal_False; 367cdf0e10cSrcweir 368cdf0e10cSrcweir if( pReadAcc ) 369cdf0e10cSrcweir { 370cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), 1 ); 371cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 372cdf0e10cSrcweir 373cdf0e10cSrcweir if( pWriteAcc ) 374cdf0e10cSrcweir { 375cdf0e10cSrcweir const BitmapColor aBlack( pWriteAcc->GetBestMatchingColor( Color( COL_BLACK ) ) ); 376cdf0e10cSrcweir const BitmapColor aWhite( pWriteAcc->GetBestMatchingColor( Color( COL_WHITE ) ) ); 377cdf0e10cSrcweir const long nWidth = pWriteAcc->Width(); 378cdf0e10cSrcweir const long nHeight = pWriteAcc->Height(); 379cdf0e10cSrcweir 380cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 381cdf0e10cSrcweir { 382cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 383cdf0e10cSrcweir { 384cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 385cdf0e10cSrcweir { 386cdf0e10cSrcweir if( pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ).GetLuminance() >= 387cdf0e10cSrcweir cThreshold ) 388cdf0e10cSrcweir { 389cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aWhite ); 390cdf0e10cSrcweir } 391cdf0e10cSrcweir else 392cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aBlack ); 393cdf0e10cSrcweir } 394cdf0e10cSrcweir } 395cdf0e10cSrcweir } 396cdf0e10cSrcweir else 397cdf0e10cSrcweir { 398cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 399cdf0e10cSrcweir { 400cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 401cdf0e10cSrcweir { 402cdf0e10cSrcweir if( pReadAcc->GetPixel( nY, nX ).GetLuminance() >= 403cdf0e10cSrcweir cThreshold ) 404cdf0e10cSrcweir { 405cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aWhite ); 406cdf0e10cSrcweir } 407cdf0e10cSrcweir else 408cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aBlack ); 409cdf0e10cSrcweir } 410cdf0e10cSrcweir } 411cdf0e10cSrcweir } 412cdf0e10cSrcweir 413cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 414cdf0e10cSrcweir bRet = sal_True; 415cdf0e10cSrcweir } 416cdf0e10cSrcweir 417cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 418cdf0e10cSrcweir 419cdf0e10cSrcweir if( bRet ) 420cdf0e10cSrcweir { 421cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 422cdf0e10cSrcweir const Size aSize( maPrefSize ); 423cdf0e10cSrcweir 424cdf0e10cSrcweir *this = aNewBmp; 425cdf0e10cSrcweir 426cdf0e10cSrcweir maPrefMapMode = aMap; 427cdf0e10cSrcweir maPrefSize = aSize; 428cdf0e10cSrcweir } 429cdf0e10cSrcweir } 430cdf0e10cSrcweir 431cdf0e10cSrcweir return bRet; 432cdf0e10cSrcweir } 433cdf0e10cSrcweir 434cdf0e10cSrcweir // ------------------------------------------------------------------------ 435cdf0e10cSrcweir 436cdf0e10cSrcweir sal_Bool Bitmap::ImplMakeMonoDither() 437cdf0e10cSrcweir { 438cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 439cdf0e10cSrcweir sal_Bool bRet = sal_False; 440cdf0e10cSrcweir 441cdf0e10cSrcweir if( pReadAcc ) 442cdf0e10cSrcweir { 443cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), 1 ); 444cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 445cdf0e10cSrcweir 446cdf0e10cSrcweir if( pWriteAcc ) 447cdf0e10cSrcweir { 448cdf0e10cSrcweir const BitmapColor aBlack( pWriteAcc->GetBestMatchingColor( Color( COL_BLACK ) ) ); 449cdf0e10cSrcweir const BitmapColor aWhite( pWriteAcc->GetBestMatchingColor( Color( COL_WHITE ) ) ); 450cdf0e10cSrcweir const long nWidth = pWriteAcc->Width(); 451cdf0e10cSrcweir const long nHeight = pWriteAcc->Height(); 452cdf0e10cSrcweir sal_uInt8 pDitherMatrix[ 16 ][ 16 ]; 453cdf0e10cSrcweir 454cdf0e10cSrcweir ImplCreateDitherMatrix( &pDitherMatrix ); 455cdf0e10cSrcweir 456cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 457cdf0e10cSrcweir { 458cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 459cdf0e10cSrcweir { 460cdf0e10cSrcweir for( long nX = 0L, nModY = nY % 16; nX < nWidth; nX++ ) 461cdf0e10cSrcweir { 462cdf0e10cSrcweir if( pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ).GetLuminance() > 463cdf0e10cSrcweir pDitherMatrix[ nModY ][ nX % 16 ] ) 464cdf0e10cSrcweir { 465cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aWhite ); 466cdf0e10cSrcweir } 467cdf0e10cSrcweir else 468cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aBlack ); 469cdf0e10cSrcweir } 470cdf0e10cSrcweir } 471cdf0e10cSrcweir } 472cdf0e10cSrcweir else 473cdf0e10cSrcweir { 474cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 475cdf0e10cSrcweir { 476cdf0e10cSrcweir for( long nX = 0L, nModY = nY % 16; nX < nWidth; nX++ ) 477cdf0e10cSrcweir { 478cdf0e10cSrcweir if( pReadAcc->GetPixel( nY, nX ).GetLuminance() > 479cdf0e10cSrcweir pDitherMatrix[ nModY ][ nX % 16 ] ) 480cdf0e10cSrcweir { 481cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aWhite ); 482cdf0e10cSrcweir } 483cdf0e10cSrcweir else 484cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aBlack ); 485cdf0e10cSrcweir } 486cdf0e10cSrcweir } 487cdf0e10cSrcweir } 488cdf0e10cSrcweir 489cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 490cdf0e10cSrcweir bRet = sal_True; 491cdf0e10cSrcweir } 492cdf0e10cSrcweir 493cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 494cdf0e10cSrcweir 495cdf0e10cSrcweir if( bRet ) 496cdf0e10cSrcweir { 497cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 498cdf0e10cSrcweir const Size aSize( maPrefSize ); 499cdf0e10cSrcweir 500cdf0e10cSrcweir *this = aNewBmp; 501cdf0e10cSrcweir 502cdf0e10cSrcweir maPrefMapMode = aMap; 503cdf0e10cSrcweir maPrefSize = aSize; 504cdf0e10cSrcweir } 505cdf0e10cSrcweir } 506cdf0e10cSrcweir 507cdf0e10cSrcweir return bRet; 508cdf0e10cSrcweir } 509cdf0e10cSrcweir 510cdf0e10cSrcweir // ------------------------------------------------------------------------ 511cdf0e10cSrcweir 512cdf0e10cSrcweir sal_Bool Bitmap::ImplMakeGreyscales( sal_uInt16 nGreys ) 513cdf0e10cSrcweir { 514cdf0e10cSrcweir DBG_ASSERT( nGreys == 16 || nGreys == 256, "Only 16 or 256 greyscales are supported!" ); 515cdf0e10cSrcweir 516cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 517cdf0e10cSrcweir sal_Bool bRet = sal_False; 518cdf0e10cSrcweir 519cdf0e10cSrcweir if( pReadAcc ) 520cdf0e10cSrcweir { 521cdf0e10cSrcweir const BitmapPalette& rPal = GetGreyPalette( nGreys ); 522cdf0e10cSrcweir sal_uLong nShift = ( ( nGreys == 16 ) ? 4UL : 0UL ); 523cdf0e10cSrcweir sal_Bool bPalDiffers = !pReadAcc->HasPalette() || ( rPal.GetEntryCount() != pReadAcc->GetPaletteEntryCount() ); 524cdf0e10cSrcweir 525cdf0e10cSrcweir if( !bPalDiffers ) 526cdf0e10cSrcweir bPalDiffers = ( (BitmapPalette&) rPal != pReadAcc->GetPalette() ); 527cdf0e10cSrcweir 528cdf0e10cSrcweir if( bPalDiffers ) 529cdf0e10cSrcweir { 530cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), ( nGreys == 16 ) ? 4 : 8, &rPal ); 531cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 532cdf0e10cSrcweir 533cdf0e10cSrcweir if( pWriteAcc ) 534cdf0e10cSrcweir { 535cdf0e10cSrcweir const long nWidth = pWriteAcc->Width(); 536cdf0e10cSrcweir const long nHeight = pWriteAcc->Height(); 537cdf0e10cSrcweir 538cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 539cdf0e10cSrcweir { 540cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 541cdf0e10cSrcweir { 542cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 543cdf0e10cSrcweir { 544cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, 545cdf0e10cSrcweir (sal_uInt8) ( pReadAcc->GetPaletteColor( 546cdf0e10cSrcweir pReadAcc->GetPixel( nY, nX ) ).GetLuminance() >> nShift ) ); 547cdf0e10cSrcweir } 548cdf0e10cSrcweir } 549cdf0e10cSrcweir } 550cdf0e10cSrcweir else if( pReadAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_BGR && 551cdf0e10cSrcweir pWriteAcc->GetScanlineFormat() == BMP_FORMAT_8BIT_PAL ) 552cdf0e10cSrcweir { 553cdf0e10cSrcweir nShift += 8; 554cdf0e10cSrcweir 555cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 556cdf0e10cSrcweir { 557cdf0e10cSrcweir Scanline pReadScan = pReadAcc->GetScanline( nY ); 558cdf0e10cSrcweir Scanline pWriteScan = pWriteAcc->GetScanline( nY ); 559cdf0e10cSrcweir 560cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 561cdf0e10cSrcweir { 562cdf0e10cSrcweir const sal_uLong nB = *pReadScan++; 563cdf0e10cSrcweir const sal_uLong nG = *pReadScan++; 564cdf0e10cSrcweir const sal_uLong nR = *pReadScan++; 565cdf0e10cSrcweir 566cdf0e10cSrcweir *pWriteScan++ = (sal_uInt8) ( ( nB * 28UL + nG * 151UL + nR * 77UL ) >> nShift ); 567cdf0e10cSrcweir } 568cdf0e10cSrcweir } 569cdf0e10cSrcweir } 570cdf0e10cSrcweir else if( pReadAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_RGB && 571cdf0e10cSrcweir pWriteAcc->GetScanlineFormat() == BMP_FORMAT_8BIT_PAL ) 572cdf0e10cSrcweir { 573cdf0e10cSrcweir nShift += 8; 574cdf0e10cSrcweir 575cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 576cdf0e10cSrcweir { 577cdf0e10cSrcweir Scanline pReadScan = pReadAcc->GetScanline( nY ); 578cdf0e10cSrcweir Scanline pWriteScan = pWriteAcc->GetScanline( nY ); 579cdf0e10cSrcweir 580cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 581cdf0e10cSrcweir { 582cdf0e10cSrcweir const sal_uLong nR = *pReadScan++; 583cdf0e10cSrcweir const sal_uLong nG = *pReadScan++; 584cdf0e10cSrcweir const sal_uLong nB = *pReadScan++; 585cdf0e10cSrcweir 586cdf0e10cSrcweir *pWriteScan++ = (sal_uInt8) ( ( nB * 28UL + nG * 151UL + nR * 77UL ) >> nShift ); 587cdf0e10cSrcweir } 588cdf0e10cSrcweir } 589cdf0e10cSrcweir } 590cdf0e10cSrcweir else 591cdf0e10cSrcweir { 592cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 593cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 594cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, sal::static_int_cast<sal_uInt8>(( pReadAcc->GetPixel( nY, nX ) ).GetLuminance() >> nShift) ); 595cdf0e10cSrcweir } 596cdf0e10cSrcweir 597cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 598cdf0e10cSrcweir bRet = sal_True; 599cdf0e10cSrcweir } 600cdf0e10cSrcweir 601cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 602cdf0e10cSrcweir 603cdf0e10cSrcweir if( bRet ) 604cdf0e10cSrcweir { 605cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 606cdf0e10cSrcweir const Size aSize( maPrefSize ); 607cdf0e10cSrcweir 608cdf0e10cSrcweir *this = aNewBmp; 609cdf0e10cSrcweir 610cdf0e10cSrcweir maPrefMapMode = aMap; 611cdf0e10cSrcweir maPrefSize = aSize; 612cdf0e10cSrcweir } 613cdf0e10cSrcweir } 614cdf0e10cSrcweir else 615cdf0e10cSrcweir { 616cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 617cdf0e10cSrcweir bRet = sal_True; 618cdf0e10cSrcweir } 619cdf0e10cSrcweir } 620cdf0e10cSrcweir 621cdf0e10cSrcweir return bRet; 622cdf0e10cSrcweir } 623cdf0e10cSrcweir 624cdf0e10cSrcweir // ------------------------------------------------------------------------ 625cdf0e10cSrcweir 626cdf0e10cSrcweir sal_Bool Bitmap::ImplConvertUp( sal_uInt16 nBitCount, Color* pExtColor ) 627cdf0e10cSrcweir { 628cdf0e10cSrcweir DBG_ASSERT( nBitCount > GetBitCount(), "New BitCount must be greater!" ); 629cdf0e10cSrcweir 630cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 631cdf0e10cSrcweir sal_Bool bRet = sal_False; 632cdf0e10cSrcweir 633cdf0e10cSrcweir if( pReadAcc ) 634cdf0e10cSrcweir { 635cdf0e10cSrcweir BitmapPalette aPal; 636cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), nBitCount, pReadAcc->HasPalette() ? &pReadAcc->GetPalette() : &aPal ); 637cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 638cdf0e10cSrcweir 639cdf0e10cSrcweir if( pWriteAcc ) 640cdf0e10cSrcweir { 641cdf0e10cSrcweir const long nWidth = pWriteAcc->Width(); 642cdf0e10cSrcweir const long nHeight = pWriteAcc->Height(); 643cdf0e10cSrcweir 644cdf0e10cSrcweir if( pWriteAcc->HasPalette() ) 645cdf0e10cSrcweir { 646cdf0e10cSrcweir const sal_uInt16 nOldCount = 1 << GetBitCount(); 647cdf0e10cSrcweir const BitmapPalette& rOldPal = pReadAcc->GetPalette(); 648cdf0e10cSrcweir 649cdf0e10cSrcweir aPal.SetEntryCount( 1 << nBitCount ); 650cdf0e10cSrcweir 651cdf0e10cSrcweir for( sal_uInt16 i = 0; i < nOldCount; i++ ) 652cdf0e10cSrcweir aPal[ i ] = rOldPal[ i ]; 653cdf0e10cSrcweir 654cdf0e10cSrcweir if( pExtColor ) 655cdf0e10cSrcweir aPal[ aPal.GetEntryCount() - 1 ] = *pExtColor; 656cdf0e10cSrcweir 657cdf0e10cSrcweir pWriteAcc->SetPalette( aPal ); 658cdf0e10cSrcweir 659cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 660cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 661cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPixel( nY, nX ) ); 662cdf0e10cSrcweir } 663cdf0e10cSrcweir else 664cdf0e10cSrcweir { 665cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 666cdf0e10cSrcweir { 667cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 668cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 669cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ) ); 670cdf0e10cSrcweir } 671cdf0e10cSrcweir else 672cdf0e10cSrcweir { 673cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 674cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 675cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, pReadAcc->GetPixel( nY, nX ) ); 676cdf0e10cSrcweir } 677cdf0e10cSrcweir } 678cdf0e10cSrcweir 679cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 680cdf0e10cSrcweir bRet = sal_True; 681cdf0e10cSrcweir } 682cdf0e10cSrcweir 683cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 684cdf0e10cSrcweir 685cdf0e10cSrcweir if( bRet ) 686cdf0e10cSrcweir { 687cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 688cdf0e10cSrcweir const Size aSize( maPrefSize ); 689cdf0e10cSrcweir 690cdf0e10cSrcweir *this = aNewBmp; 691cdf0e10cSrcweir 692cdf0e10cSrcweir maPrefMapMode = aMap; 693cdf0e10cSrcweir maPrefSize = aSize; 694cdf0e10cSrcweir } 695cdf0e10cSrcweir } 696cdf0e10cSrcweir 697cdf0e10cSrcweir return bRet; 698cdf0e10cSrcweir } 699cdf0e10cSrcweir 700cdf0e10cSrcweir // ------------------------------------------------------------------------ 701cdf0e10cSrcweir 702cdf0e10cSrcweir sal_Bool Bitmap::ImplConvertDown( sal_uInt16 nBitCount, Color* pExtColor ) 703cdf0e10cSrcweir { 704cdf0e10cSrcweir DBG_ASSERT( nBitCount <= GetBitCount(), "New BitCount must be lower ( or equal when pExtColor is set )!" ); 705cdf0e10cSrcweir 706cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 707cdf0e10cSrcweir sal_Bool bRet = sal_False; 708cdf0e10cSrcweir 709cdf0e10cSrcweir if( pReadAcc ) 710cdf0e10cSrcweir { 711cdf0e10cSrcweir BitmapPalette aPal; 712cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), nBitCount, &aPal ); 713cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 714cdf0e10cSrcweir 715cdf0e10cSrcweir if( pWriteAcc ) 716cdf0e10cSrcweir { 717cdf0e10cSrcweir const sal_uInt16 nCount = 1 << nBitCount; 718cdf0e10cSrcweir const long nWidth = pWriteAcc->Width(); 719cdf0e10cSrcweir const long nWidth1 = nWidth - 1L; 720cdf0e10cSrcweir const long nHeight = pWriteAcc->Height(); 721cdf0e10cSrcweir Octree aOctree( *pReadAcc, pExtColor ? ( nCount - 1 ) : nCount ); 722cdf0e10cSrcweir InverseColorMap aColorMap( aPal = aOctree.GetPalette() ); 723cdf0e10cSrcweir BitmapColor aColor; 724cdf0e10cSrcweir ImpErrorQuad aErrQuad; 725cdf0e10cSrcweir ImpErrorQuad* pErrQuad1 = new ImpErrorQuad[ nWidth ]; 726cdf0e10cSrcweir ImpErrorQuad* pErrQuad2 = new ImpErrorQuad[ nWidth ]; 727cdf0e10cSrcweir ImpErrorQuad* pQLine1 = pErrQuad1; 728cdf0e10cSrcweir ImpErrorQuad* pQLine2 = 0; 729cdf0e10cSrcweir long nX, nY; 730cdf0e10cSrcweir long nYTmp = 0L; 731cdf0e10cSrcweir sal_uInt8 cIndex; 732cdf0e10cSrcweir sal_Bool bQ1 = sal_True; 733cdf0e10cSrcweir 734cdf0e10cSrcweir if( pExtColor ) 735cdf0e10cSrcweir { 736cdf0e10cSrcweir aPal.SetEntryCount( aPal.GetEntryCount() + 1 ); 737cdf0e10cSrcweir aPal[ aPal.GetEntryCount() - 1 ] = *pExtColor; 738cdf0e10cSrcweir } 739cdf0e10cSrcweir 740cdf0e10cSrcweir // set Black/White always, if we have enough space 741cdf0e10cSrcweir if( aPal.GetEntryCount() < ( nCount - 1 ) ) 742cdf0e10cSrcweir { 743cdf0e10cSrcweir aPal.SetEntryCount( aPal.GetEntryCount() + 2 ); 744cdf0e10cSrcweir aPal[ aPal.GetEntryCount() - 2 ] = Color( COL_BLACK ); 745cdf0e10cSrcweir aPal[ aPal.GetEntryCount() - 1 ] = Color( COL_WHITE ); 746cdf0e10cSrcweir } 747cdf0e10cSrcweir 748cdf0e10cSrcweir pWriteAcc->SetPalette( aPal ); 749cdf0e10cSrcweir 750cdf0e10cSrcweir for( nY = 0L; nY < Min( nHeight, 2L ); nY++, nYTmp++ ) 751cdf0e10cSrcweir { 752cdf0e10cSrcweir for( nX = 0L, pQLine2 = !nY ? pErrQuad1 : pErrQuad2; nX < nWidth; nX++ ) 753cdf0e10cSrcweir { 754cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 755cdf0e10cSrcweir pQLine2[ nX ] = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nYTmp, nX ) ); 756cdf0e10cSrcweir else 757cdf0e10cSrcweir pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); 758cdf0e10cSrcweir } 759cdf0e10cSrcweir } 760cdf0e10cSrcweir 761cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++, nYTmp++ ) 762cdf0e10cSrcweir { 763cdf0e10cSrcweir // erstes ZeilenPixel 764cdf0e10cSrcweir cIndex = (sal_uInt8) aColorMap.GetBestPaletteIndex( pQLine1[ 0 ].ImplGetColor() ); 765cdf0e10cSrcweir pWriteAcc->SetPixel( nY, 0, cIndex ); 766cdf0e10cSrcweir 767cdf0e10cSrcweir for( nX = 1L; nX < nWidth1; nX++ ) 768cdf0e10cSrcweir { 769cdf0e10cSrcweir cIndex = (sal_uInt8) aColorMap.GetBestPaletteIndex( aColor = pQLine1[ nX ].ImplGetColor() ); 770cdf0e10cSrcweir aErrQuad = ( ImpErrorQuad( aColor ) -= pWriteAcc->GetPaletteColor( cIndex ) ); 771cdf0e10cSrcweir pQLine1[ ++nX ].ImplAddColorError7( aErrQuad ); 772cdf0e10cSrcweir pQLine2[ nX-- ].ImplAddColorError1( aErrQuad ); 773cdf0e10cSrcweir pQLine2[ nX-- ].ImplAddColorError5( aErrQuad ); 774cdf0e10cSrcweir pQLine2[ nX++ ].ImplAddColorError3( aErrQuad ); 775cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, cIndex ); 776cdf0e10cSrcweir } 777cdf0e10cSrcweir 778cdf0e10cSrcweir // letztes ZeilenPixel 779cdf0e10cSrcweir if( nX < nWidth ) 780cdf0e10cSrcweir { 781cdf0e10cSrcweir cIndex = (sal_uInt8) aColorMap.GetBestPaletteIndex( pQLine1[ nWidth1 ].ImplGetColor() ); 782cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, cIndex ); 783cdf0e10cSrcweir } 784cdf0e10cSrcweir 785cdf0e10cSrcweir // Zeilenpuffer neu fuellen/kopieren 786cdf0e10cSrcweir pQLine1 = pQLine2; 787cdf0e10cSrcweir pQLine2 = ( bQ1 = !bQ1 ) != sal_False ? pErrQuad2 : pErrQuad1; 788cdf0e10cSrcweir 789cdf0e10cSrcweir if( nYTmp < nHeight ) 790cdf0e10cSrcweir { 791cdf0e10cSrcweir for( nX = 0L; nX < nWidth; nX++ ) 792cdf0e10cSrcweir { 793cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 794cdf0e10cSrcweir pQLine2[ nX ] = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nYTmp, nX ) ); 795cdf0e10cSrcweir else 796cdf0e10cSrcweir pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); 797cdf0e10cSrcweir } 798cdf0e10cSrcweir } 799cdf0e10cSrcweir } 800cdf0e10cSrcweir 801cdf0e10cSrcweir // Zeilenpuffer zerstoeren 802cdf0e10cSrcweir delete[] pErrQuad1; 803cdf0e10cSrcweir delete[] pErrQuad2; 804cdf0e10cSrcweir 805cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 806cdf0e10cSrcweir bRet = sal_True; 807cdf0e10cSrcweir } 808cdf0e10cSrcweir 809cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 810cdf0e10cSrcweir 811cdf0e10cSrcweir if( bRet ) 812cdf0e10cSrcweir { 813cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 814cdf0e10cSrcweir const Size aSize( maPrefSize ); 815cdf0e10cSrcweir 816cdf0e10cSrcweir *this = aNewBmp; 817cdf0e10cSrcweir 818cdf0e10cSrcweir maPrefMapMode = aMap; 819cdf0e10cSrcweir maPrefSize = aSize; 820cdf0e10cSrcweir } 821cdf0e10cSrcweir } 822cdf0e10cSrcweir 823cdf0e10cSrcweir return bRet; 824cdf0e10cSrcweir } 825cdf0e10cSrcweir 826cdf0e10cSrcweir // ------------------------------------------------------------------------ 827cdf0e10cSrcweir 828cdf0e10cSrcweir sal_Bool Bitmap::ImplConvertGhosted() 829cdf0e10cSrcweir { 830cdf0e10cSrcweir Bitmap aNewBmp; 831cdf0e10cSrcweir BitmapReadAccess* pR = AcquireReadAccess(); 832cdf0e10cSrcweir sal_Bool bRet = sal_False; 833cdf0e10cSrcweir 834cdf0e10cSrcweir if( pR ) 835cdf0e10cSrcweir { 836cdf0e10cSrcweir if( pR->HasPalette() ) 837cdf0e10cSrcweir { 838cdf0e10cSrcweir BitmapPalette aNewPal( pR->GetPaletteEntryCount() ); 839cdf0e10cSrcweir 840cdf0e10cSrcweir for( long i = 0, nCount = aNewPal.GetEntryCount(); i < nCount; i++ ) 841cdf0e10cSrcweir { 842cdf0e10cSrcweir const BitmapColor& rOld = pR->GetPaletteColor( (sal_uInt16) i ); 843cdf0e10cSrcweir aNewPal[ (sal_uInt16) i ] = BitmapColor( ( rOld.GetRed() >> 1 ) | 0x80, 844cdf0e10cSrcweir ( rOld.GetGreen() >> 1 ) | 0x80, 845cdf0e10cSrcweir ( rOld.GetBlue() >> 1 ) | 0x80 ); 846cdf0e10cSrcweir } 847cdf0e10cSrcweir 848cdf0e10cSrcweir aNewBmp = Bitmap( GetSizePixel(), GetBitCount(), &aNewPal ); 849cdf0e10cSrcweir BitmapWriteAccess* pW = aNewBmp.AcquireWriteAccess(); 850cdf0e10cSrcweir 851cdf0e10cSrcweir if( pW ) 852cdf0e10cSrcweir { 853cdf0e10cSrcweir pW->CopyBuffer( *pR ); 854cdf0e10cSrcweir aNewBmp.ReleaseAccess( pW ); 855cdf0e10cSrcweir bRet = sal_True; 856cdf0e10cSrcweir } 857cdf0e10cSrcweir } 858cdf0e10cSrcweir else 859cdf0e10cSrcweir { 860cdf0e10cSrcweir aNewBmp = Bitmap( GetSizePixel(), 24 ); 861cdf0e10cSrcweir 862cdf0e10cSrcweir BitmapWriteAccess* pW = aNewBmp.AcquireWriteAccess(); 863cdf0e10cSrcweir 864cdf0e10cSrcweir if( pW ) 865cdf0e10cSrcweir { 866cdf0e10cSrcweir const long nWidth = pR->Width(), nHeight = pR->Height(); 867cdf0e10cSrcweir 868cdf0e10cSrcweir for( long nY = 0; nY < nHeight; nY++ ) 869cdf0e10cSrcweir { 870cdf0e10cSrcweir for( long nX = 0; nX < nWidth; nX++ ) 871cdf0e10cSrcweir { 872cdf0e10cSrcweir const BitmapColor aOld( pR->GetPixel( nY, nX ) ); 873cdf0e10cSrcweir pW->SetPixel( nY, nX, BitmapColor( ( aOld.GetRed() >> 1 ) | 0x80, 874cdf0e10cSrcweir ( aOld.GetGreen() >> 1 ) | 0x80, 875cdf0e10cSrcweir ( aOld.GetBlue() >> 1 ) | 0x80 ) ); 876cdf0e10cSrcweir 877cdf0e10cSrcweir } 878cdf0e10cSrcweir } 879cdf0e10cSrcweir 880cdf0e10cSrcweir aNewBmp.ReleaseAccess( pW ); 881cdf0e10cSrcweir bRet = sal_True; 882cdf0e10cSrcweir } 883cdf0e10cSrcweir } 884cdf0e10cSrcweir 885cdf0e10cSrcweir ReleaseAccess( pR ); 886cdf0e10cSrcweir } 887cdf0e10cSrcweir 888cdf0e10cSrcweir if( bRet ) 889cdf0e10cSrcweir { 890cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 891cdf0e10cSrcweir const Size aSize( maPrefSize ); 892cdf0e10cSrcweir 893cdf0e10cSrcweir *this = aNewBmp; 894cdf0e10cSrcweir 895cdf0e10cSrcweir maPrefMapMode = aMap; 896cdf0e10cSrcweir maPrefSize = aSize; 897cdf0e10cSrcweir } 898cdf0e10cSrcweir 899cdf0e10cSrcweir return bRet; 900cdf0e10cSrcweir } 901cdf0e10cSrcweir 902cdf0e10cSrcweir // ------------------------------------------------------------------------ 903cdf0e10cSrcweir 904cdf0e10cSrcweir sal_Bool Bitmap::Scale( const double& rScaleX, const double& rScaleY, sal_uLong nScaleFlag ) 905cdf0e10cSrcweir { 906cdf0e10cSrcweir sal_Bool bRet; 907cdf0e10cSrcweir 908cdf0e10cSrcweir if( ( rScaleX != 1.0 ) || ( rScaleY != 1.0 ) ) 909cdf0e10cSrcweir { 910cdf0e10cSrcweir if( BMP_SCALE_FAST == nScaleFlag ) 911cdf0e10cSrcweir bRet = ImplScaleFast( rScaleX, rScaleY ); 912cdf0e10cSrcweir else if( BMP_SCALE_INTERPOLATE == nScaleFlag ) 913cdf0e10cSrcweir bRet = ImplScaleInterpolate( rScaleX, rScaleY ); 914cdf0e10cSrcweir else 915cdf0e10cSrcweir bRet = sal_False; 916cdf0e10cSrcweir } 917cdf0e10cSrcweir else 918cdf0e10cSrcweir bRet = sal_True; 919cdf0e10cSrcweir 920cdf0e10cSrcweir return bRet; 921cdf0e10cSrcweir } 922cdf0e10cSrcweir 923cdf0e10cSrcweir // ------------------------------------------------------------------------ 924cdf0e10cSrcweir 925cdf0e10cSrcweir sal_Bool Bitmap::Scale( const Size& rNewSize, sal_uLong nScaleFlag ) 926cdf0e10cSrcweir { 927cdf0e10cSrcweir const Size aSize( GetSizePixel() ); 928cdf0e10cSrcweir sal_Bool bRet; 929cdf0e10cSrcweir 930cdf0e10cSrcweir if( aSize.Width() && aSize.Height() ) 931cdf0e10cSrcweir { 932cdf0e10cSrcweir bRet = Scale( (double) rNewSize.Width() / aSize.Width(), 933cdf0e10cSrcweir (double) rNewSize.Height() / aSize.Height(), 934cdf0e10cSrcweir nScaleFlag ); 935cdf0e10cSrcweir } 936cdf0e10cSrcweir else 937cdf0e10cSrcweir bRet = sal_True; 938cdf0e10cSrcweir 939cdf0e10cSrcweir return bRet; 940cdf0e10cSrcweir } 941cdf0e10cSrcweir 942cdf0e10cSrcweir // ------------------------------------------------------------------------ 943cdf0e10cSrcweir 944cdf0e10cSrcweir sal_Bool Bitmap::ImplScaleFast( const double& rScaleX, const double& rScaleY ) 945cdf0e10cSrcweir { 946cdf0e10cSrcweir const Size aSizePix( GetSizePixel() ); 947cdf0e10cSrcweir const long nNewWidth = FRound( aSizePix.Width() * rScaleX ); 948cdf0e10cSrcweir const long nNewHeight = FRound( aSizePix.Height() * rScaleY ); 949cdf0e10cSrcweir sal_Bool bRet = sal_False; 950cdf0e10cSrcweir 951cdf0e10cSrcweir if( nNewWidth && nNewHeight ) 952cdf0e10cSrcweir { 953cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 954cdf0e10cSrcweir Bitmap aNewBmp( Size( nNewWidth, nNewHeight ), GetBitCount(), &pReadAcc->GetPalette() ); 955cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 956cdf0e10cSrcweir 957cdf0e10cSrcweir if( pReadAcc && pWriteAcc ) 958cdf0e10cSrcweir { 959cdf0e10cSrcweir const long nScanlineSize = pWriteAcc->GetScanlineSize(); 960cdf0e10cSrcweir const long nNewWidth1 = nNewWidth - 1L; 961cdf0e10cSrcweir const long nNewHeight1 = nNewHeight - 1L; 962cdf0e10cSrcweir const long nWidth = pReadAcc->Width(); 963cdf0e10cSrcweir const long nHeight = pReadAcc->Height(); 964cdf0e10cSrcweir long* pLutX = new long[ nNewWidth ]; 965cdf0e10cSrcweir long* pLutY = new long[ nNewHeight ]; 966cdf0e10cSrcweir long nX, nY, nMapY, nActY = 0L; 967cdf0e10cSrcweir 968cdf0e10cSrcweir if( nNewWidth1 && nNewHeight1 ) 969cdf0e10cSrcweir { 970cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 971cdf0e10cSrcweir pLutX[ nX ] = nX * nWidth / nNewWidth; 972cdf0e10cSrcweir 973cdf0e10cSrcweir for( nY = 0L; nY < nNewHeight; nY++ ) 974cdf0e10cSrcweir pLutY[ nY ] = nY * nHeight / nNewHeight; 975cdf0e10cSrcweir 976cdf0e10cSrcweir while( nActY < nNewHeight ) 977cdf0e10cSrcweir { 978cdf0e10cSrcweir nMapY = pLutY[ nActY ]; 979cdf0e10cSrcweir 980cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 981cdf0e10cSrcweir pWriteAcc->SetPixel( nActY, nX, pReadAcc->GetPixel( nMapY , pLutX[ nX ] ) ); 982cdf0e10cSrcweir 983cdf0e10cSrcweir while( ( nActY < nNewHeight1 ) && ( pLutY[ nActY + 1 ] == nMapY ) ) 984cdf0e10cSrcweir { 985cdf0e10cSrcweir memcpy( pWriteAcc->GetScanline( nActY + 1L ), 986cdf0e10cSrcweir pWriteAcc->GetScanline( nActY ), nScanlineSize ); 987cdf0e10cSrcweir nActY++; 988cdf0e10cSrcweir } 989cdf0e10cSrcweir 990cdf0e10cSrcweir nActY++; 991cdf0e10cSrcweir } 992cdf0e10cSrcweir 993cdf0e10cSrcweir bRet = sal_True; 994cdf0e10cSrcweir } 995cdf0e10cSrcweir 996cdf0e10cSrcweir delete[] pLutX; 997cdf0e10cSrcweir delete[] pLutY; 998cdf0e10cSrcweir } 999cdf0e10cSrcweir 1000cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 1001cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 1002cdf0e10cSrcweir 1003cdf0e10cSrcweir if( bRet ) 1004cdf0e10cSrcweir ImplAssignWithSize( aNewBmp ); 1005cdf0e10cSrcweir } 1006cdf0e10cSrcweir 1007cdf0e10cSrcweir return bRet; 1008cdf0e10cSrcweir } 1009cdf0e10cSrcweir 1010cdf0e10cSrcweir // ------------------------------------------------------------------------ 1011cdf0e10cSrcweir 1012cdf0e10cSrcweir sal_Bool Bitmap::ImplScaleInterpolate( const double& rScaleX, const double& rScaleY ) 1013cdf0e10cSrcweir { 1014cdf0e10cSrcweir const Size aSizePix( GetSizePixel() ); 1015cdf0e10cSrcweir const long nNewWidth = FRound( aSizePix.Width() * rScaleX ); 1016cdf0e10cSrcweir const long nNewHeight = FRound( aSizePix.Height() * rScaleY ); 1017cdf0e10cSrcweir sal_Bool bRet = sal_False; 1018cdf0e10cSrcweir 1019cdf0e10cSrcweir if( ( nNewWidth > 1L ) && ( nNewHeight > 1L ) ) 1020cdf0e10cSrcweir { 1021cdf0e10cSrcweir BitmapColor aCol0; 1022cdf0e10cSrcweir BitmapColor aCol1; 1023cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 1024cdf0e10cSrcweir long nWidth = pReadAcc->Width(); 1025cdf0e10cSrcweir long nHeight = pReadAcc->Height(); 1026cdf0e10cSrcweir Bitmap aNewBmp( Size( nNewWidth, nHeight ), 24 ); 1027cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 1028cdf0e10cSrcweir long* pLutInt; 1029cdf0e10cSrcweir long* pLutFrac; 1030cdf0e10cSrcweir long nX, nY; 1031cdf0e10cSrcweir long lXB0, lXB1, lXG0, lXG1, lXR0, lXR1; 1032cdf0e10cSrcweir double fTemp; 1033cdf0e10cSrcweir long nTemp; 1034cdf0e10cSrcweir 1035cdf0e10cSrcweir if( pReadAcc && pWriteAcc ) 1036cdf0e10cSrcweir { 1037cdf0e10cSrcweir const long nNewWidth1 = nNewWidth - 1L; 1038cdf0e10cSrcweir const long nWidth1 = pReadAcc->Width() - 1L; 1039cdf0e10cSrcweir const double fRevScaleX = (double) nWidth1 / nNewWidth1; 1040cdf0e10cSrcweir 1041cdf0e10cSrcweir pLutInt = new long[ nNewWidth ]; 1042cdf0e10cSrcweir pLutFrac = new long[ nNewWidth ]; 1043cdf0e10cSrcweir 1044cdf0e10cSrcweir for( nX = 0L, nTemp = nWidth - 2L; nX < nNewWidth; nX++ ) 1045cdf0e10cSrcweir { 1046cdf0e10cSrcweir fTemp = nX * fRevScaleX; 1047cdf0e10cSrcweir pLutInt[ nX ] = MinMax( (long) fTemp, 0, nTemp ); 1048cdf0e10cSrcweir fTemp -= pLutInt[ nX ]; 1049cdf0e10cSrcweir pLutFrac[ nX ] = (long) ( fTemp * 1024. ); 1050cdf0e10cSrcweir } 1051cdf0e10cSrcweir 1052cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 1053cdf0e10cSrcweir { 1054cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++ ) 1055cdf0e10cSrcweir { 1056cdf0e10cSrcweir if( 1 == nWidth ) 1057cdf0e10cSrcweir { 1058cdf0e10cSrcweir aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, 0 ) ); 1059cdf0e10cSrcweir 1060cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 1061cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1062cdf0e10cSrcweir } 1063cdf0e10cSrcweir else 1064cdf0e10cSrcweir { 1065cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 1066cdf0e10cSrcweir { 1067cdf0e10cSrcweir nTemp = pLutInt[ nX ]; 1068cdf0e10cSrcweir 1069cdf0e10cSrcweir aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nTemp++ ) ); 1070cdf0e10cSrcweir aCol1 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nTemp ) ); 1071cdf0e10cSrcweir 1072cdf0e10cSrcweir nTemp = pLutFrac[ nX ]; 1073cdf0e10cSrcweir 1074cdf0e10cSrcweir lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); 1075cdf0e10cSrcweir lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); 1076cdf0e10cSrcweir lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); 1077cdf0e10cSrcweir 1078cdf0e10cSrcweir aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); 1079cdf0e10cSrcweir aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); 1080cdf0e10cSrcweir aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); 1081cdf0e10cSrcweir 1082cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1083cdf0e10cSrcweir } 1084cdf0e10cSrcweir } 1085cdf0e10cSrcweir } 1086cdf0e10cSrcweir } 1087cdf0e10cSrcweir else 1088cdf0e10cSrcweir { 1089cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++ ) 1090cdf0e10cSrcweir { 1091cdf0e10cSrcweir if( 1 == nWidth ) 1092cdf0e10cSrcweir { 1093cdf0e10cSrcweir aCol0 = pReadAcc->GetPixel( nY, 0 ); 1094cdf0e10cSrcweir 1095cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 1096cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1097cdf0e10cSrcweir } 1098cdf0e10cSrcweir else 1099cdf0e10cSrcweir { 1100cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 1101cdf0e10cSrcweir { 1102cdf0e10cSrcweir nTemp = pLutInt[ nX ]; 1103cdf0e10cSrcweir 1104cdf0e10cSrcweir aCol0 = pReadAcc->GetPixel( nY, nTemp++ ); 1105cdf0e10cSrcweir aCol1 = pReadAcc->GetPixel( nY, nTemp ); 1106cdf0e10cSrcweir 1107cdf0e10cSrcweir nTemp = pLutFrac[ nX ]; 1108cdf0e10cSrcweir 1109cdf0e10cSrcweir lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); 1110cdf0e10cSrcweir lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); 1111cdf0e10cSrcweir lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); 1112cdf0e10cSrcweir 1113cdf0e10cSrcweir aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); 1114cdf0e10cSrcweir aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); 1115cdf0e10cSrcweir aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); 1116cdf0e10cSrcweir 1117cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1118cdf0e10cSrcweir } 1119cdf0e10cSrcweir } 1120cdf0e10cSrcweir } 1121cdf0e10cSrcweir } 1122cdf0e10cSrcweir 1123cdf0e10cSrcweir delete[] pLutInt; 1124cdf0e10cSrcweir delete[] pLutFrac; 1125cdf0e10cSrcweir bRet = sal_True; 1126cdf0e10cSrcweir } 1127cdf0e10cSrcweir 1128cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 1129cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 1130cdf0e10cSrcweir 1131cdf0e10cSrcweir if( bRet ) 1132cdf0e10cSrcweir { 1133cdf0e10cSrcweir bRet = sal_False; 1134cdf0e10cSrcweir ImplAssignWithSize( aNewBmp ); 1135cdf0e10cSrcweir pReadAcc = AcquireReadAccess(); 1136cdf0e10cSrcweir aNewBmp = Bitmap( Size( nNewWidth, nNewHeight ), 24 ); 1137cdf0e10cSrcweir pWriteAcc = aNewBmp.AcquireWriteAccess(); 1138cdf0e10cSrcweir 1139cdf0e10cSrcweir if( pReadAcc && pWriteAcc ) 1140cdf0e10cSrcweir { 1141cdf0e10cSrcweir const long nNewHeight1 = nNewHeight - 1L; 1142cdf0e10cSrcweir const long nHeight1 = pReadAcc->Height() - 1L; 1143cdf0e10cSrcweir const double fRevScaleY = (double) nHeight1 / nNewHeight1; 1144cdf0e10cSrcweir 1145cdf0e10cSrcweir pLutInt = new long[ nNewHeight ]; 1146cdf0e10cSrcweir pLutFrac = new long[ nNewHeight ]; 1147cdf0e10cSrcweir 1148cdf0e10cSrcweir for( nY = 0L, nTemp = nHeight - 2L; nY < nNewHeight; nY++ ) 1149cdf0e10cSrcweir { 1150cdf0e10cSrcweir fTemp = nY * fRevScaleY; 1151cdf0e10cSrcweir pLutInt[ nY ] = MinMax( (long) fTemp, 0, nTemp ); 1152cdf0e10cSrcweir fTemp -= pLutInt[ nY ]; 1153cdf0e10cSrcweir pLutFrac[ nY ] = (long) ( fTemp * 1024. ); 1154cdf0e10cSrcweir } 1155cdf0e10cSrcweir 1156cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 1157cdf0e10cSrcweir { 1158cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 1159cdf0e10cSrcweir { 1160cdf0e10cSrcweir if( 1 == nHeight ) 1161cdf0e10cSrcweir { 1162cdf0e10cSrcweir aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( 0, nX ) ); 1163cdf0e10cSrcweir 1164cdf0e10cSrcweir for( nY = 0L; nY < nNewHeight; nY++ ) 1165cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1166cdf0e10cSrcweir } 1167cdf0e10cSrcweir else 1168cdf0e10cSrcweir { 1169cdf0e10cSrcweir for( nY = 0L; nY < nNewHeight; nY++ ) 1170cdf0e10cSrcweir { 1171cdf0e10cSrcweir nTemp = pLutInt[ nY ]; 1172cdf0e10cSrcweir 1173cdf0e10cSrcweir aCol0 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nTemp++, nX ) ); 1174cdf0e10cSrcweir aCol1 = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nTemp, nX ) ); 1175cdf0e10cSrcweir 1176cdf0e10cSrcweir nTemp = pLutFrac[ nY ]; 1177cdf0e10cSrcweir 1178cdf0e10cSrcweir lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); 1179cdf0e10cSrcweir lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); 1180cdf0e10cSrcweir lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); 1181cdf0e10cSrcweir 1182cdf0e10cSrcweir aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); 1183cdf0e10cSrcweir aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); 1184cdf0e10cSrcweir aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); 1185cdf0e10cSrcweir 1186cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1187cdf0e10cSrcweir } 1188cdf0e10cSrcweir } 1189cdf0e10cSrcweir } 1190cdf0e10cSrcweir } 1191cdf0e10cSrcweir else 1192cdf0e10cSrcweir { 1193cdf0e10cSrcweir for( nX = 0L; nX < nNewWidth; nX++ ) 1194cdf0e10cSrcweir { 1195cdf0e10cSrcweir if( 1 == nHeight ) 1196cdf0e10cSrcweir { 1197cdf0e10cSrcweir aCol0 = pReadAcc->GetPixel( 0, nX ); 1198cdf0e10cSrcweir 1199cdf0e10cSrcweir for( nY = 0L; nY < nNewHeight; nY++ ) 1200cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1201cdf0e10cSrcweir } 1202cdf0e10cSrcweir else 1203cdf0e10cSrcweir { 1204cdf0e10cSrcweir for( nY = 0L; nY < nNewHeight; nY++ ) 1205cdf0e10cSrcweir { 1206cdf0e10cSrcweir nTemp = pLutInt[ nY ]; 1207cdf0e10cSrcweir 1208cdf0e10cSrcweir aCol0 = pReadAcc->GetPixel( nTemp++, nX ); 1209cdf0e10cSrcweir aCol1 = pReadAcc->GetPixel( nTemp, nX ); 1210cdf0e10cSrcweir 1211cdf0e10cSrcweir nTemp = pLutFrac[ nY ]; 1212cdf0e10cSrcweir 1213cdf0e10cSrcweir lXR1 = aCol1.GetRed() - ( lXR0 = aCol0.GetRed() ); 1214cdf0e10cSrcweir lXG1 = aCol1.GetGreen() - ( lXG0 = aCol0.GetGreen() ); 1215cdf0e10cSrcweir lXB1 = aCol1.GetBlue() - ( lXB0 = aCol0.GetBlue() ); 1216cdf0e10cSrcweir 1217cdf0e10cSrcweir aCol0.SetRed( (sal_uInt8) ( ( lXR1 * nTemp + ( lXR0 << 10 ) ) >> 10 ) ); 1218cdf0e10cSrcweir aCol0.SetGreen( (sal_uInt8) ( ( lXG1 * nTemp + ( lXG0 << 10 ) ) >> 10 ) ); 1219cdf0e10cSrcweir aCol0.SetBlue( (sal_uInt8) ( ( lXB1 * nTemp + ( lXB0 << 10 ) ) >> 10 ) ); 1220cdf0e10cSrcweir 1221cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aCol0 ); 1222cdf0e10cSrcweir } 1223cdf0e10cSrcweir } 1224cdf0e10cSrcweir } 1225cdf0e10cSrcweir } 1226cdf0e10cSrcweir 1227cdf0e10cSrcweir delete[] pLutInt; 1228cdf0e10cSrcweir delete[] pLutFrac; 1229cdf0e10cSrcweir bRet = sal_True; 1230cdf0e10cSrcweir } 1231cdf0e10cSrcweir 1232cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 1233cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 1234cdf0e10cSrcweir 1235cdf0e10cSrcweir if( bRet ) 1236cdf0e10cSrcweir ImplAssignWithSize( aNewBmp ); 1237cdf0e10cSrcweir } 1238cdf0e10cSrcweir } 1239cdf0e10cSrcweir 1240cdf0e10cSrcweir if( !bRet ) 1241cdf0e10cSrcweir bRet = ImplScaleFast( rScaleX, rScaleY ); 1242cdf0e10cSrcweir 1243cdf0e10cSrcweir return bRet; 1244cdf0e10cSrcweir } 1245cdf0e10cSrcweir 1246cdf0e10cSrcweir // ------------------------------------------------------------------------ 1247cdf0e10cSrcweir 1248cdf0e10cSrcweir sal_Bool Bitmap::Dither( sal_uLong nDitherFlags ) 1249cdf0e10cSrcweir { 1250cdf0e10cSrcweir sal_Bool bRet = sal_False; 1251cdf0e10cSrcweir 1252cdf0e10cSrcweir const Size aSizePix( GetSizePixel() ); 1253cdf0e10cSrcweir 1254cdf0e10cSrcweir if( aSizePix.Width() == 1 || aSizePix.Height() == 1 ) 1255cdf0e10cSrcweir bRet = sal_True; 1256cdf0e10cSrcweir else if( nDitherFlags & BMP_DITHER_MATRIX ) 1257cdf0e10cSrcweir bRet = ImplDitherMatrix(); 1258cdf0e10cSrcweir else if( nDitherFlags & BMP_DITHER_FLOYD ) 1259cdf0e10cSrcweir bRet = ImplDitherFloyd(); 1260cdf0e10cSrcweir else if( ( nDitherFlags & BMP_DITHER_FLOYD_16 ) && ( GetBitCount() == 24 ) ) 1261cdf0e10cSrcweir bRet = ImplDitherFloyd16(); 1262cdf0e10cSrcweir 1263cdf0e10cSrcweir return bRet; 1264cdf0e10cSrcweir } 1265cdf0e10cSrcweir 1266cdf0e10cSrcweir // ------------------------------------------------------------------------ 1267cdf0e10cSrcweir 1268cdf0e10cSrcweir sal_Bool Bitmap::ImplDitherMatrix() 1269cdf0e10cSrcweir { 1270cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 1271cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), 8 ); 1272cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 1273cdf0e10cSrcweir sal_Bool bRet = sal_False; 1274cdf0e10cSrcweir 1275cdf0e10cSrcweir if( pReadAcc && pWriteAcc ) 1276cdf0e10cSrcweir { 1277cdf0e10cSrcweir const sal_uLong nWidth = pReadAcc->Width(); 1278cdf0e10cSrcweir const sal_uLong nHeight = pReadAcc->Height(); 1279cdf0e10cSrcweir BitmapColor aIndex( (sal_uInt8) 0 ); 1280cdf0e10cSrcweir 1281cdf0e10cSrcweir if( pReadAcc->HasPalette() ) 1282cdf0e10cSrcweir { 1283cdf0e10cSrcweir for( sal_uLong nY = 0UL; nY < nHeight; nY++ ) 1284cdf0e10cSrcweir { 1285cdf0e10cSrcweir for( sal_uLong nX = 0UL, nModY = ( nY & 0x0FUL ) << 4UL; nX < nWidth; nX++ ) 1286cdf0e10cSrcweir { 1287cdf0e10cSrcweir const BitmapColor aCol( pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nX ) ) ); 1288cdf0e10cSrcweir const sal_uLong nD = nVCLDitherLut[ nModY + ( nX & 0x0FUL ) ]; 1289cdf0e10cSrcweir const sal_uLong nR = ( nVCLLut[ aCol.GetRed() ] + nD ) >> 16UL; 1290cdf0e10cSrcweir const sal_uLong nG = ( nVCLLut[ aCol.GetGreen() ] + nD ) >> 16UL; 1291cdf0e10cSrcweir const sal_uLong nB = ( nVCLLut[ aCol.GetBlue() ] + nD ) >> 16UL; 1292cdf0e10cSrcweir 1293cdf0e10cSrcweir aIndex.SetIndex( (sal_uInt8) ( nVCLRLut[ nR ] + nVCLGLut[ nG ] + nVCLBLut[ nB ] ) ); 1294cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aIndex ); 1295cdf0e10cSrcweir } 1296cdf0e10cSrcweir } 1297cdf0e10cSrcweir } 1298cdf0e10cSrcweir else 1299cdf0e10cSrcweir { 1300cdf0e10cSrcweir for( sal_uLong nY = 0UL; nY < nHeight; nY++ ) 1301cdf0e10cSrcweir { 1302cdf0e10cSrcweir for( sal_uLong nX = 0UL, nModY = ( nY & 0x0FUL ) << 4UL; nX < nWidth; nX++ ) 1303cdf0e10cSrcweir { 1304cdf0e10cSrcweir const BitmapColor aCol( pReadAcc->GetPixel( nY, nX ) ); 1305cdf0e10cSrcweir const sal_uLong nD = nVCLDitherLut[ nModY + ( nX & 0x0FUL ) ]; 1306cdf0e10cSrcweir const sal_uLong nR = ( nVCLLut[ aCol.GetRed() ] + nD ) >> 16UL; 1307cdf0e10cSrcweir const sal_uLong nG = ( nVCLLut[ aCol.GetGreen() ] + nD ) >> 16UL; 1308cdf0e10cSrcweir const sal_uLong nB = ( nVCLLut[ aCol.GetBlue() ] + nD ) >> 16UL; 1309cdf0e10cSrcweir 1310cdf0e10cSrcweir aIndex.SetIndex( (sal_uInt8) ( nVCLRLut[ nR ] + nVCLGLut[ nG ] + nVCLBLut[ nB ] ) ); 1311cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aIndex ); 1312cdf0e10cSrcweir } 1313cdf0e10cSrcweir } 1314cdf0e10cSrcweir } 1315cdf0e10cSrcweir 1316cdf0e10cSrcweir bRet = sal_True; 1317cdf0e10cSrcweir } 1318cdf0e10cSrcweir 1319cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 1320cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 1321cdf0e10cSrcweir 1322cdf0e10cSrcweir if( bRet ) 1323cdf0e10cSrcweir { 1324cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 1325cdf0e10cSrcweir const Size aSize( maPrefSize ); 1326cdf0e10cSrcweir 1327cdf0e10cSrcweir *this = aNewBmp; 1328cdf0e10cSrcweir 1329cdf0e10cSrcweir maPrefMapMode = aMap; 1330cdf0e10cSrcweir maPrefSize = aSize; 1331cdf0e10cSrcweir } 1332cdf0e10cSrcweir 1333cdf0e10cSrcweir return bRet; 1334cdf0e10cSrcweir } 1335cdf0e10cSrcweir 1336cdf0e10cSrcweir // ------------------------------------------------------------------------ 1337cdf0e10cSrcweir 1338cdf0e10cSrcweir sal_Bool Bitmap::ImplDitherFloyd() 1339cdf0e10cSrcweir { 1340cdf0e10cSrcweir const Size aSize( GetSizePixel() ); 1341cdf0e10cSrcweir sal_Bool bRet = sal_False; 1342cdf0e10cSrcweir 1343cdf0e10cSrcweir if( ( aSize.Width() > 3 ) && ( aSize.Height() > 2 ) ) 1344cdf0e10cSrcweir { 1345cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 1346cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), 8 ); 1347cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 1348cdf0e10cSrcweir 1349cdf0e10cSrcweir if( pReadAcc && pWriteAcc ) 1350cdf0e10cSrcweir { 1351cdf0e10cSrcweir BitmapColor aColor; 1352cdf0e10cSrcweir long nWidth = pReadAcc->Width(); 1353cdf0e10cSrcweir long nWidth1 = nWidth - 1L; 1354cdf0e10cSrcweir long nHeight = pReadAcc->Height(); 1355cdf0e10cSrcweir long nX; 1356cdf0e10cSrcweir long nW = nWidth * 3L; 1357cdf0e10cSrcweir long nW2 = nW - 3L; 1358cdf0e10cSrcweir long nRErr, nGErr, nBErr; 1359cdf0e10cSrcweir long nRC, nGC, nBC; 1360cdf0e10cSrcweir long nTemp; 1361cdf0e10cSrcweir long nZ; 1362cdf0e10cSrcweir long* p1 = new long[ nW ]; 1363cdf0e10cSrcweir long* p2 = new long[ nW ]; 1364cdf0e10cSrcweir long* p1T = p1; 1365cdf0e10cSrcweir long* p2T = p2; 1366cdf0e10cSrcweir long* pTmp; 1367cdf0e10cSrcweir sal_Bool bPal = pReadAcc->HasPalette(); 1368cdf0e10cSrcweir 1369cdf0e10cSrcweir pTmp = p2T; 1370cdf0e10cSrcweir 1371cdf0e10cSrcweir if( bPal ) 1372cdf0e10cSrcweir { 1373cdf0e10cSrcweir for( nZ = 0; nZ < nWidth; nZ++ ) 1374cdf0e10cSrcweir { 1375cdf0e10cSrcweir aColor = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( 0, nZ ) ); 1376cdf0e10cSrcweir 1377cdf0e10cSrcweir *pTmp++ = (long) aColor.GetBlue() << 12; 1378cdf0e10cSrcweir *pTmp++ = (long) aColor.GetGreen() << 12; 1379cdf0e10cSrcweir *pTmp++ = (long) aColor.GetRed() << 12; 1380cdf0e10cSrcweir } 1381cdf0e10cSrcweir } 1382cdf0e10cSrcweir else 1383cdf0e10cSrcweir { 1384cdf0e10cSrcweir for( nZ = 0; nZ < nWidth; nZ++ ) 1385cdf0e10cSrcweir { 1386cdf0e10cSrcweir aColor = pReadAcc->GetPixel( 0, nZ ); 1387cdf0e10cSrcweir 1388cdf0e10cSrcweir *pTmp++ = (long) aColor.GetBlue() << 12; 1389cdf0e10cSrcweir *pTmp++ = (long) aColor.GetGreen() << 12; 1390cdf0e10cSrcweir *pTmp++ = (long) aColor.GetRed() << 12; 1391cdf0e10cSrcweir } 1392cdf0e10cSrcweir } 1393cdf0e10cSrcweir 1394cdf0e10cSrcweir for( long nY = 1, nYAcc = 0L; nY <= nHeight; nY++, nYAcc++ ) 1395cdf0e10cSrcweir { 1396cdf0e10cSrcweir pTmp = p1T; 1397cdf0e10cSrcweir p1T = p2T; 1398cdf0e10cSrcweir p2T = pTmp; 1399cdf0e10cSrcweir 1400cdf0e10cSrcweir if( nY < nHeight ) 1401cdf0e10cSrcweir { 1402cdf0e10cSrcweir if( bPal ) 1403cdf0e10cSrcweir { 1404cdf0e10cSrcweir for( nZ = 0; nZ < nWidth; nZ++ ) 1405cdf0e10cSrcweir { 1406cdf0e10cSrcweir aColor = pReadAcc->GetPaletteColor( pReadAcc->GetPixel( nY, nZ ) ); 1407cdf0e10cSrcweir 1408cdf0e10cSrcweir *pTmp++ = (long) aColor.GetBlue() << 12; 1409cdf0e10cSrcweir *pTmp++ = (long) aColor.GetGreen() << 12; 1410cdf0e10cSrcweir *pTmp++ = (long) aColor.GetRed() << 12; 1411cdf0e10cSrcweir } 1412cdf0e10cSrcweir } 1413cdf0e10cSrcweir else 1414cdf0e10cSrcweir { 1415cdf0e10cSrcweir for( nZ = 0; nZ < nWidth; nZ++ ) 1416cdf0e10cSrcweir { 1417cdf0e10cSrcweir aColor = pReadAcc->GetPixel( nY, nZ ); 1418cdf0e10cSrcweir 1419cdf0e10cSrcweir *pTmp++ = (long) aColor.GetBlue() << 12; 1420cdf0e10cSrcweir *pTmp++ = (long) aColor.GetGreen() << 12; 1421cdf0e10cSrcweir *pTmp++ = (long) aColor.GetRed() << 12; 1422cdf0e10cSrcweir } 1423cdf0e10cSrcweir } 1424cdf0e10cSrcweir } 1425cdf0e10cSrcweir 1426cdf0e10cSrcweir // erstes Pixel gesondert betrachten 1427cdf0e10cSrcweir nX = 0; 1428cdf0e10cSrcweir CALC_ERRORS; 1429cdf0e10cSrcweir CALC_TABLES7; 1430cdf0e10cSrcweir nX -= 5; 1431cdf0e10cSrcweir CALC_TABLES5; 1432cdf0e10cSrcweir pWriteAcc->SetPixel( nYAcc, 0, BitmapColor( (sal_uInt8) ( nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ] ) ) ); 1433cdf0e10cSrcweir 1434cdf0e10cSrcweir // mittlere Pixel ueber Schleife 1435cdf0e10cSrcweir long nXAcc; 1436cdf0e10cSrcweir for ( nX = 3L, nXAcc = 1L; nX < nW2; nXAcc++ ) 1437cdf0e10cSrcweir { 1438cdf0e10cSrcweir CALC_ERRORS; 1439cdf0e10cSrcweir CALC_TABLES7; 1440cdf0e10cSrcweir nX -= 8; 1441cdf0e10cSrcweir CALC_TABLES3; 1442cdf0e10cSrcweir CALC_TABLES5; 1443cdf0e10cSrcweir pWriteAcc->SetPixel( nYAcc, nXAcc, BitmapColor( (sal_uInt8) ( nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ] ) ) ); 1444cdf0e10cSrcweir } 1445cdf0e10cSrcweir 1446cdf0e10cSrcweir // letztes Pixel gesondert betrachten 1447cdf0e10cSrcweir CALC_ERRORS; 1448cdf0e10cSrcweir nX -= 5; 1449cdf0e10cSrcweir CALC_TABLES3; 1450cdf0e10cSrcweir CALC_TABLES5; 1451cdf0e10cSrcweir pWriteAcc->SetPixel( nYAcc, nWidth1, BitmapColor( (sal_uInt8) ( nVCLBLut[ nBC ] + nVCLGLut[nGC ] + nVCLRLut[nRC ] ) ) ); 1452cdf0e10cSrcweir } 1453cdf0e10cSrcweir 1454cdf0e10cSrcweir delete[] p1; 1455cdf0e10cSrcweir delete[] p2; 1456cdf0e10cSrcweir bRet = sal_True; 1457cdf0e10cSrcweir } 1458cdf0e10cSrcweir 1459cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 1460cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 1461cdf0e10cSrcweir 1462cdf0e10cSrcweir if( bRet ) 1463cdf0e10cSrcweir { 1464cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 1465cdf0e10cSrcweir const Size aPrefSize( maPrefSize ); 1466cdf0e10cSrcweir 1467cdf0e10cSrcweir *this = aNewBmp; 1468cdf0e10cSrcweir 1469cdf0e10cSrcweir maPrefMapMode = aMap; 1470cdf0e10cSrcweir maPrefSize = aPrefSize; 1471cdf0e10cSrcweir } 1472cdf0e10cSrcweir } 1473cdf0e10cSrcweir 1474cdf0e10cSrcweir return bRet; 1475cdf0e10cSrcweir } 1476cdf0e10cSrcweir 1477cdf0e10cSrcweir // ------------------------------------------------------------------------ 1478cdf0e10cSrcweir 1479cdf0e10cSrcweir sal_Bool Bitmap::ImplDitherFloyd16() 1480cdf0e10cSrcweir { 1481cdf0e10cSrcweir BitmapReadAccess* pReadAcc = AcquireReadAccess(); 1482cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), 24 ); 1483cdf0e10cSrcweir BitmapWriteAccess* pWriteAcc = aNewBmp.AcquireWriteAccess(); 1484cdf0e10cSrcweir sal_Bool bRet = sal_False; 1485cdf0e10cSrcweir 1486cdf0e10cSrcweir if( pReadAcc && pWriteAcc ) 1487cdf0e10cSrcweir { 1488cdf0e10cSrcweir const long nWidth = pWriteAcc->Width(); 1489cdf0e10cSrcweir const long nWidth1 = nWidth - 1L; 1490cdf0e10cSrcweir const long nHeight = pWriteAcc->Height(); 1491cdf0e10cSrcweir BitmapColor aColor; 1492cdf0e10cSrcweir BitmapColor aBestCol; 1493cdf0e10cSrcweir ImpErrorQuad aErrQuad; 1494cdf0e10cSrcweir ImpErrorQuad* pErrQuad1 = new ImpErrorQuad[ nWidth ]; 1495cdf0e10cSrcweir ImpErrorQuad* pErrQuad2 = new ImpErrorQuad[ nWidth ]; 1496cdf0e10cSrcweir ImpErrorQuad* pQLine1 = pErrQuad1; 1497cdf0e10cSrcweir ImpErrorQuad* pQLine2 = 0; 1498cdf0e10cSrcweir long nX, nY; 1499cdf0e10cSrcweir long nYTmp = 0L; 1500cdf0e10cSrcweir sal_Bool bQ1 = sal_True; 1501cdf0e10cSrcweir 1502cdf0e10cSrcweir for( nY = 0L; nY < Min( nHeight, 2L ); nY++, nYTmp++ ) 1503cdf0e10cSrcweir for( nX = 0L, pQLine2 = !nY ? pErrQuad1 : pErrQuad2; nX < nWidth; nX++ ) 1504cdf0e10cSrcweir pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); 1505cdf0e10cSrcweir 1506cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++, nYTmp++ ) 1507cdf0e10cSrcweir { 1508cdf0e10cSrcweir // erstes ZeilenPixel 1509cdf0e10cSrcweir aBestCol = pQLine1[ 0 ].ImplGetColor(); 1510cdf0e10cSrcweir aBestCol.SetRed( ( aBestCol.GetRed() & 248 ) | 7 ); 1511cdf0e10cSrcweir aBestCol.SetGreen( ( aBestCol.GetGreen() & 248 ) | 7 ); 1512cdf0e10cSrcweir aBestCol.SetBlue( ( aBestCol.GetBlue() & 248 ) | 7 ); 1513cdf0e10cSrcweir pWriteAcc->SetPixel( nY, 0, aBestCol ); 1514cdf0e10cSrcweir 1515cdf0e10cSrcweir for( nX = 1L; nX < nWidth1; nX++ ) 1516cdf0e10cSrcweir { 1517cdf0e10cSrcweir aColor = pQLine1[ nX ].ImplGetColor(); 1518cdf0e10cSrcweir aBestCol.SetRed( ( aColor.GetRed() & 248 ) | 7 ); 1519cdf0e10cSrcweir aBestCol.SetGreen( ( aColor.GetGreen() & 248 ) | 7 ); 1520cdf0e10cSrcweir aBestCol.SetBlue( ( aColor.GetBlue() & 248 ) | 7 ); 1521cdf0e10cSrcweir aErrQuad = ( ImpErrorQuad( aColor ) -= aBestCol ); 1522cdf0e10cSrcweir pQLine1[ ++nX ].ImplAddColorError7( aErrQuad ); 1523cdf0e10cSrcweir pQLine2[ nX-- ].ImplAddColorError1( aErrQuad ); 1524cdf0e10cSrcweir pQLine2[ nX-- ].ImplAddColorError5( aErrQuad ); 1525cdf0e10cSrcweir pQLine2[ nX++ ].ImplAddColorError3( aErrQuad ); 1526cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aBestCol ); 1527cdf0e10cSrcweir } 1528cdf0e10cSrcweir 1529cdf0e10cSrcweir // letztes ZeilenPixel 1530cdf0e10cSrcweir aBestCol = pQLine1[ nWidth1 ].ImplGetColor(); 1531cdf0e10cSrcweir aBestCol.SetRed( ( aBestCol.GetRed() & 248 ) | 7 ); 1532cdf0e10cSrcweir aBestCol.SetGreen( ( aBestCol.GetGreen() & 248 ) | 7 ); 1533cdf0e10cSrcweir aBestCol.SetBlue( ( aBestCol.GetBlue() & 248 ) | 7 ); 1534cdf0e10cSrcweir pWriteAcc->SetPixel( nY, nX, aBestCol ); 1535cdf0e10cSrcweir 1536cdf0e10cSrcweir // Zeilenpuffer neu fuellen/kopieren 1537cdf0e10cSrcweir pQLine1 = pQLine2; 1538cdf0e10cSrcweir pQLine2 = ( bQ1 = !bQ1 ) != sal_False ? pErrQuad2 : pErrQuad1; 1539cdf0e10cSrcweir 1540cdf0e10cSrcweir if( nYTmp < nHeight ) 1541cdf0e10cSrcweir for( nX = 0L; nX < nWidth; nX++ ) 1542cdf0e10cSrcweir pQLine2[ nX ] = pReadAcc->GetPixel( nYTmp, nX ); 1543cdf0e10cSrcweir } 1544cdf0e10cSrcweir 1545cdf0e10cSrcweir // Zeilenpuffer zerstoeren 1546cdf0e10cSrcweir delete[] pErrQuad1; 1547cdf0e10cSrcweir delete[] pErrQuad2; 1548cdf0e10cSrcweir bRet = sal_True; 1549cdf0e10cSrcweir } 1550cdf0e10cSrcweir 1551cdf0e10cSrcweir ReleaseAccess( pReadAcc ); 1552cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWriteAcc ); 1553cdf0e10cSrcweir 1554cdf0e10cSrcweir if( bRet ) 1555cdf0e10cSrcweir { 1556cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 1557cdf0e10cSrcweir const Size aSize( maPrefSize ); 1558cdf0e10cSrcweir 1559cdf0e10cSrcweir *this = aNewBmp; 1560cdf0e10cSrcweir 1561cdf0e10cSrcweir maPrefMapMode = aMap; 1562cdf0e10cSrcweir maPrefSize = aSize; 1563cdf0e10cSrcweir } 1564cdf0e10cSrcweir 1565cdf0e10cSrcweir return bRet; 1566cdf0e10cSrcweir } 1567cdf0e10cSrcweir 1568cdf0e10cSrcweir // ------------------------------------------------------------------------ 1569cdf0e10cSrcweir 1570cdf0e10cSrcweir sal_Bool Bitmap::ReduceColors( sal_uInt16 nColorCount, BmpReduce eReduce ) 1571cdf0e10cSrcweir { 1572cdf0e10cSrcweir sal_Bool bRet; 1573cdf0e10cSrcweir 1574cdf0e10cSrcweir if( GetColorCount() <= (sal_uLong) nColorCount ) 1575cdf0e10cSrcweir bRet = sal_True; 1576cdf0e10cSrcweir else if( nColorCount ) 1577cdf0e10cSrcweir { 1578cdf0e10cSrcweir if( BMP_REDUCE_SIMPLE == eReduce ) 1579cdf0e10cSrcweir bRet = ImplReduceSimple( nColorCount ); 1580cdf0e10cSrcweir else if( BMP_REDUCE_POPULAR == eReduce ) 1581cdf0e10cSrcweir bRet = ImplReducePopular( nColorCount ); 1582cdf0e10cSrcweir else 1583cdf0e10cSrcweir bRet = ImplReduceMedian( nColorCount ); 1584cdf0e10cSrcweir } 1585cdf0e10cSrcweir else 1586cdf0e10cSrcweir bRet = sal_False; 1587cdf0e10cSrcweir 1588cdf0e10cSrcweir return bRet; 1589cdf0e10cSrcweir } 1590cdf0e10cSrcweir 1591cdf0e10cSrcweir // ------------------------------------------------------------------------ 1592cdf0e10cSrcweir 1593cdf0e10cSrcweir sal_Bool Bitmap::ImplReduceSimple( sal_uInt16 nColorCount ) 1594cdf0e10cSrcweir { 1595cdf0e10cSrcweir Bitmap aNewBmp; 1596cdf0e10cSrcweir BitmapReadAccess* pRAcc = AcquireReadAccess(); 1597cdf0e10cSrcweir const sal_uInt16 nColCount = Min( nColorCount, (sal_uInt16) 256 ); 1598cdf0e10cSrcweir sal_uInt16 nBitCount; 1599cdf0e10cSrcweir sal_Bool bRet = sal_False; 1600cdf0e10cSrcweir 1601cdf0e10cSrcweir if( nColCount <= 2 ) 1602cdf0e10cSrcweir nBitCount = 1; 1603cdf0e10cSrcweir else if( nColCount <= 16 ) 1604cdf0e10cSrcweir nBitCount = 4; 1605cdf0e10cSrcweir else 1606cdf0e10cSrcweir nBitCount = 8; 1607cdf0e10cSrcweir 1608cdf0e10cSrcweir if( pRAcc ) 1609cdf0e10cSrcweir { 1610cdf0e10cSrcweir Octree aOct( *pRAcc, nColCount ); 1611cdf0e10cSrcweir const BitmapPalette& rPal = aOct.GetPalette(); 1612cdf0e10cSrcweir BitmapWriteAccess* pWAcc; 1613cdf0e10cSrcweir 1614cdf0e10cSrcweir aNewBmp = Bitmap( GetSizePixel(), nBitCount, &rPal ); 1615cdf0e10cSrcweir pWAcc = aNewBmp.AcquireWriteAccess(); 1616cdf0e10cSrcweir 1617cdf0e10cSrcweir if( pWAcc ) 1618cdf0e10cSrcweir { 1619cdf0e10cSrcweir const long nWidth = pRAcc->Width(); 1620cdf0e10cSrcweir const long nHeight = pRAcc->Height(); 1621cdf0e10cSrcweir 1622cdf0e10cSrcweir if( pRAcc->HasPalette() ) 1623cdf0e10cSrcweir { 1624cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 1625cdf0e10cSrcweir for( long nX =0L; nX < nWidth; nX++ ) 1626cdf0e10cSrcweir pWAcc->SetPixel( nY, nX, (sal_uInt8) aOct.GetBestPaletteIndex( pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ) ) ); 1627cdf0e10cSrcweir } 1628cdf0e10cSrcweir else 1629cdf0e10cSrcweir { 1630cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 1631cdf0e10cSrcweir for( long nX =0L; nX < nWidth; nX++ ) 1632cdf0e10cSrcweir pWAcc->SetPixel( nY, nX, (sal_uInt8) aOct.GetBestPaletteIndex( pRAcc->GetPixel( nY, nX ) ) ); 1633cdf0e10cSrcweir } 1634cdf0e10cSrcweir 1635cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWAcc ); 1636cdf0e10cSrcweir bRet = sal_True; 1637cdf0e10cSrcweir } 1638cdf0e10cSrcweir 1639cdf0e10cSrcweir ReleaseAccess( pRAcc ); 1640cdf0e10cSrcweir } 1641cdf0e10cSrcweir 1642cdf0e10cSrcweir if( bRet ) 1643cdf0e10cSrcweir { 1644cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 1645cdf0e10cSrcweir const Size aSize( maPrefSize ); 1646cdf0e10cSrcweir 1647cdf0e10cSrcweir *this = aNewBmp; 1648cdf0e10cSrcweir maPrefMapMode = aMap; 1649cdf0e10cSrcweir maPrefSize = aSize; 1650cdf0e10cSrcweir } 1651cdf0e10cSrcweir 1652cdf0e10cSrcweir return bRet; 1653cdf0e10cSrcweir } 1654cdf0e10cSrcweir 1655cdf0e10cSrcweir // ------------------------------------------------------------------------ 1656cdf0e10cSrcweir 1657cdf0e10cSrcweir struct PopularColorCount 1658cdf0e10cSrcweir { 1659cdf0e10cSrcweir sal_uInt32 mnIndex; 1660cdf0e10cSrcweir sal_uInt32 mnCount; 1661cdf0e10cSrcweir }; 1662cdf0e10cSrcweir 1663cdf0e10cSrcweir // ------------------------------------------------------------------------ 1664cdf0e10cSrcweir 1665cdf0e10cSrcweir extern "C" int __LOADONCALLAPI ImplPopularCmpFnc( const void* p1, const void* p2 ) 1666cdf0e10cSrcweir { 1667cdf0e10cSrcweir int nRet; 1668cdf0e10cSrcweir 1669cdf0e10cSrcweir if( ( (PopularColorCount*) p1 )->mnCount < ( (PopularColorCount*) p2 )->mnCount ) 1670cdf0e10cSrcweir nRet = 1; 1671cdf0e10cSrcweir else if( ( (PopularColorCount*) p1 )->mnCount == ( (PopularColorCount*) p2 )->mnCount ) 1672cdf0e10cSrcweir nRet = 0; 1673cdf0e10cSrcweir else 1674cdf0e10cSrcweir nRet = -1; 1675cdf0e10cSrcweir 1676cdf0e10cSrcweir return nRet; 1677cdf0e10cSrcweir } 1678cdf0e10cSrcweir 1679cdf0e10cSrcweir // ------------------------------------------------------------------------ 1680cdf0e10cSrcweir 1681cdf0e10cSrcweir sal_Bool Bitmap::ImplReducePopular( sal_uInt16 nColCount ) 1682cdf0e10cSrcweir { 1683cdf0e10cSrcweir BitmapReadAccess* pRAcc = AcquireReadAccess(); 1684cdf0e10cSrcweir sal_uInt16 nBitCount; 1685cdf0e10cSrcweir sal_Bool bRet = sal_False; 1686cdf0e10cSrcweir 1687cdf0e10cSrcweir if( nColCount > 256 ) 1688cdf0e10cSrcweir nColCount = 256; 1689cdf0e10cSrcweir 1690cdf0e10cSrcweir if( nColCount < 17 ) 1691cdf0e10cSrcweir nBitCount = 4; 1692cdf0e10cSrcweir else 1693cdf0e10cSrcweir nBitCount = 8; 1694cdf0e10cSrcweir 1695cdf0e10cSrcweir if( pRAcc ) 1696cdf0e10cSrcweir { 1697cdf0e10cSrcweir const sal_uInt32 nValidBits = 4; 1698cdf0e10cSrcweir const sal_uInt32 nRightShiftBits = 8 - nValidBits; 1699cdf0e10cSrcweir const sal_uInt32 nLeftShiftBits1 = nValidBits; 1700cdf0e10cSrcweir const sal_uInt32 nLeftShiftBits2 = nValidBits << 1; 1701cdf0e10cSrcweir const sal_uInt32 nColorsPerComponent = 1 << nValidBits; 1702cdf0e10cSrcweir const sal_uInt32 nColorOffset = 256 / nColorsPerComponent; 1703cdf0e10cSrcweir const sal_uInt32 nTotalColors = nColorsPerComponent * nColorsPerComponent * nColorsPerComponent; 1704cdf0e10cSrcweir const long nWidth = pRAcc->Width(); 1705cdf0e10cSrcweir const long nHeight = pRAcc->Height(); 1706cdf0e10cSrcweir PopularColorCount* pCountTable = new PopularColorCount[ nTotalColors ]; 1707cdf0e10cSrcweir long nX, nY, nR, nG, nB, nIndex; 1708cdf0e10cSrcweir 1709cdf0e10cSrcweir rtl_zeroMemory( pCountTable, nTotalColors * sizeof( PopularColorCount ) ); 1710cdf0e10cSrcweir 1711cdf0e10cSrcweir for( nR = 0, nIndex = 0; nR < 256; nR += nColorOffset ) 1712cdf0e10cSrcweir { 1713cdf0e10cSrcweir for( nG = 0; nG < 256; nG += nColorOffset ) 1714cdf0e10cSrcweir { 1715cdf0e10cSrcweir for( nB = 0; nB < 256; nB += nColorOffset ) 1716cdf0e10cSrcweir { 1717cdf0e10cSrcweir pCountTable[ nIndex ].mnIndex = nIndex; 1718cdf0e10cSrcweir nIndex++; 1719cdf0e10cSrcweir } 1720cdf0e10cSrcweir } 1721cdf0e10cSrcweir } 1722cdf0e10cSrcweir 1723cdf0e10cSrcweir if( pRAcc->HasPalette() ) 1724cdf0e10cSrcweir { 1725cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++ ) 1726cdf0e10cSrcweir { 1727cdf0e10cSrcweir for( nX = 0L; nX < nWidth; nX++ ) 1728cdf0e10cSrcweir { 1729cdf0e10cSrcweir const BitmapColor& rCol = pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ); 1730cdf0e10cSrcweir pCountTable[ ( ( ( (sal_uInt32) rCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | 1731cdf0e10cSrcweir ( ( ( (sal_uInt32) rCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | 1732cdf0e10cSrcweir ( ( (sal_uInt32) rCol.GetBlue() ) >> nRightShiftBits ) ].mnCount++; 1733cdf0e10cSrcweir } 1734cdf0e10cSrcweir } 1735cdf0e10cSrcweir } 1736cdf0e10cSrcweir else 1737cdf0e10cSrcweir { 1738cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++ ) 1739cdf0e10cSrcweir { 1740cdf0e10cSrcweir for( nX = 0L; nX < nWidth; nX++ ) 1741cdf0e10cSrcweir { 1742cdf0e10cSrcweir const BitmapColor aCol( pRAcc->GetPixel( nY, nX ) ); 1743cdf0e10cSrcweir pCountTable[ ( ( ( (sal_uInt32) aCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | 1744cdf0e10cSrcweir ( ( ( (sal_uInt32) aCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | 1745cdf0e10cSrcweir ( ( (sal_uInt32) aCol.GetBlue() ) >> nRightShiftBits ) ].mnCount++; 1746cdf0e10cSrcweir } 1747cdf0e10cSrcweir } 1748cdf0e10cSrcweir } 1749cdf0e10cSrcweir 1750cdf0e10cSrcweir BitmapPalette aNewPal( nColCount ); 1751cdf0e10cSrcweir 1752cdf0e10cSrcweir qsort( pCountTable, nTotalColors, sizeof( PopularColorCount ), ImplPopularCmpFnc ); 1753cdf0e10cSrcweir 1754cdf0e10cSrcweir for( sal_uInt16 n = 0; n < nColCount; n++ ) 1755cdf0e10cSrcweir { 1756cdf0e10cSrcweir const PopularColorCount& rPop = pCountTable[ n ]; 1757cdf0e10cSrcweir aNewPal[ n ] = BitmapColor( (sal_uInt8) ( ( rPop.mnIndex >> nLeftShiftBits2 ) << nRightShiftBits ), 1758cdf0e10cSrcweir (sal_uInt8) ( ( ( rPop.mnIndex >> nLeftShiftBits1 ) & ( nColorsPerComponent - 1 ) ) << nRightShiftBits ), 1759cdf0e10cSrcweir (sal_uInt8) ( ( rPop.mnIndex & ( nColorsPerComponent - 1 ) ) << nRightShiftBits ) ); 1760cdf0e10cSrcweir } 1761cdf0e10cSrcweir 1762cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), nBitCount, &aNewPal ); 1763cdf0e10cSrcweir BitmapWriteAccess* pWAcc = aNewBmp.AcquireWriteAccess(); 1764cdf0e10cSrcweir 1765cdf0e10cSrcweir if( pWAcc ) 1766cdf0e10cSrcweir { 1767cdf0e10cSrcweir BitmapColor aDstCol( (sal_uInt8) 0 ); 1768cdf0e10cSrcweir sal_uInt8* pIndexMap = new sal_uInt8[ nTotalColors ]; 1769cdf0e10cSrcweir 1770cdf0e10cSrcweir for( nR = 0, nIndex = 0; nR < 256; nR += nColorOffset ) 1771cdf0e10cSrcweir for( nG = 0; nG < 256; nG += nColorOffset ) 1772cdf0e10cSrcweir for( nB = 0; nB < 256; nB += nColorOffset ) 1773cdf0e10cSrcweir pIndexMap[ nIndex++ ] = (sal_uInt8) aNewPal.GetBestIndex( BitmapColor( (sal_uInt8) nR, (sal_uInt8) nG, (sal_uInt8) nB ) ); 1774cdf0e10cSrcweir 1775cdf0e10cSrcweir if( pRAcc->HasPalette() ) 1776cdf0e10cSrcweir { 1777cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++ ) 1778cdf0e10cSrcweir { 1779cdf0e10cSrcweir for( nX = 0L; nX < nWidth; nX++ ) 1780cdf0e10cSrcweir { 1781cdf0e10cSrcweir const BitmapColor& rCol = pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ); 1782cdf0e10cSrcweir aDstCol.SetIndex( pIndexMap[ ( ( ( (sal_uInt32) rCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | 1783cdf0e10cSrcweir ( ( ( (sal_uInt32) rCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | 1784cdf0e10cSrcweir ( ( (sal_uInt32) rCol.GetBlue() ) >> nRightShiftBits ) ] ); 1785cdf0e10cSrcweir pWAcc->SetPixel( nY, nX, aDstCol ); 1786cdf0e10cSrcweir } 1787cdf0e10cSrcweir } 1788cdf0e10cSrcweir } 1789cdf0e10cSrcweir else 1790cdf0e10cSrcweir { 1791cdf0e10cSrcweir for( nY = 0L; nY < nHeight; nY++ ) 1792cdf0e10cSrcweir { 1793cdf0e10cSrcweir for( nX = 0L; nX < nWidth; nX++ ) 1794cdf0e10cSrcweir { 1795cdf0e10cSrcweir const BitmapColor aCol( pRAcc->GetPixel( nY, nX ) ); 1796cdf0e10cSrcweir aDstCol.SetIndex( pIndexMap[ ( ( ( (sal_uInt32) aCol.GetRed() ) >> nRightShiftBits ) << nLeftShiftBits2 ) | 1797cdf0e10cSrcweir ( ( ( (sal_uInt32) aCol.GetGreen() ) >> nRightShiftBits ) << nLeftShiftBits1 ) | 1798cdf0e10cSrcweir ( ( (sal_uInt32) aCol.GetBlue() ) >> nRightShiftBits ) ] ); 1799cdf0e10cSrcweir pWAcc->SetPixel( nY, nX, aDstCol ); 1800cdf0e10cSrcweir } 1801cdf0e10cSrcweir } 1802cdf0e10cSrcweir } 1803cdf0e10cSrcweir 1804cdf0e10cSrcweir delete[] pIndexMap; 1805cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWAcc ); 1806cdf0e10cSrcweir bRet = sal_True; 1807cdf0e10cSrcweir } 1808cdf0e10cSrcweir 1809cdf0e10cSrcweir delete[] pCountTable; 1810cdf0e10cSrcweir ReleaseAccess( pRAcc ); 1811cdf0e10cSrcweir 1812cdf0e10cSrcweir if( bRet ) 1813cdf0e10cSrcweir { 1814cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 1815cdf0e10cSrcweir const Size aSize( maPrefSize ); 1816cdf0e10cSrcweir 1817cdf0e10cSrcweir *this = aNewBmp; 1818cdf0e10cSrcweir maPrefMapMode = aMap; 1819cdf0e10cSrcweir maPrefSize = aSize; 1820cdf0e10cSrcweir } 1821cdf0e10cSrcweir } 1822cdf0e10cSrcweir 1823cdf0e10cSrcweir return bRet; 1824cdf0e10cSrcweir } 1825cdf0e10cSrcweir 1826cdf0e10cSrcweir // ------------------------------------------------------------------------ 1827cdf0e10cSrcweir 1828cdf0e10cSrcweir sal_Bool Bitmap::ImplReduceMedian( sal_uInt16 nColCount ) 1829cdf0e10cSrcweir { 1830cdf0e10cSrcweir BitmapReadAccess* pRAcc = AcquireReadAccess(); 1831cdf0e10cSrcweir sal_uInt16 nBitCount; 1832cdf0e10cSrcweir sal_Bool bRet = sal_False; 1833cdf0e10cSrcweir 1834cdf0e10cSrcweir if( nColCount < 17 ) 1835cdf0e10cSrcweir nBitCount = 4; 1836cdf0e10cSrcweir else if( nColCount < 257 ) 1837cdf0e10cSrcweir nBitCount = 8; 1838cdf0e10cSrcweir else 1839cdf0e10cSrcweir { 1840cdf0e10cSrcweir DBG_ERROR( "Bitmap::ImplReduceMedian(): invalid color count!" ); 1841cdf0e10cSrcweir nBitCount = 8; 1842cdf0e10cSrcweir nColCount = 256; 1843cdf0e10cSrcweir } 1844cdf0e10cSrcweir 1845cdf0e10cSrcweir if( pRAcc ) 1846cdf0e10cSrcweir { 1847cdf0e10cSrcweir Bitmap aNewBmp( GetSizePixel(), nBitCount ); 1848cdf0e10cSrcweir BitmapWriteAccess* pWAcc = aNewBmp.AcquireWriteAccess(); 1849cdf0e10cSrcweir 1850cdf0e10cSrcweir if( pWAcc ) 1851cdf0e10cSrcweir { 1852cdf0e10cSrcweir const sal_uLong nSize = 32768UL * sizeof( sal_uLong ); 1853cdf0e10cSrcweir sal_uLong* pColBuf = (sal_uLong*) rtl_allocateMemory( nSize ); 1854cdf0e10cSrcweir const long nWidth = pWAcc->Width(); 1855cdf0e10cSrcweir const long nHeight = pWAcc->Height(); 1856cdf0e10cSrcweir long nIndex = 0L; 1857cdf0e10cSrcweir 1858cdf0e10cSrcweir memset( (HPBYTE) pColBuf, 0, nSize ); 1859cdf0e10cSrcweir 1860cdf0e10cSrcweir // create Buffer 1861cdf0e10cSrcweir if( pRAcc->HasPalette() ) 1862cdf0e10cSrcweir { 1863cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 1864cdf0e10cSrcweir { 1865cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 1866cdf0e10cSrcweir { 1867cdf0e10cSrcweir const BitmapColor& rCol = pRAcc->GetPaletteColor( pRAcc->GetPixel( nY, nX ) ); 1868cdf0e10cSrcweir pColBuf[ RGB15( rCol.GetRed() >> 3, rCol.GetGreen() >> 3, rCol.GetBlue() >> 3 ) ]++; 1869cdf0e10cSrcweir } 1870cdf0e10cSrcweir } 1871cdf0e10cSrcweir } 1872cdf0e10cSrcweir else 1873cdf0e10cSrcweir { 1874cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 1875cdf0e10cSrcweir { 1876cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 1877cdf0e10cSrcweir { 1878cdf0e10cSrcweir const BitmapColor aCol( pRAcc->GetPixel( nY, nX ) ); 1879cdf0e10cSrcweir pColBuf[ RGB15( aCol.GetRed() >> 3, aCol.GetGreen() >> 3, aCol.GetBlue() >> 3 ) ]++; 1880cdf0e10cSrcweir } 1881cdf0e10cSrcweir } 1882cdf0e10cSrcweir } 1883cdf0e10cSrcweir 1884cdf0e10cSrcweir // create palette via median cut 1885cdf0e10cSrcweir BitmapPalette aPal( pWAcc->GetPaletteEntryCount() ); 1886cdf0e10cSrcweir ImplMedianCut( pColBuf, aPal, 0, 31, 0, 31, 0, 31, 1887cdf0e10cSrcweir nColCount, nWidth * nHeight, nIndex ); 1888cdf0e10cSrcweir 1889cdf0e10cSrcweir // do mapping of colors to palette 1890cdf0e10cSrcweir InverseColorMap aMap( aPal ); 1891cdf0e10cSrcweir pWAcc->SetPalette( aPal ); 1892cdf0e10cSrcweir for( long nY = 0L; nY < nHeight; nY++ ) 1893cdf0e10cSrcweir for( long nX = 0L; nX < nWidth; nX++ ) 1894cdf0e10cSrcweir pWAcc->SetPixel( nY, nX, (sal_uInt8) aMap.GetBestPaletteIndex( pRAcc->GetColor( nY, nX ) ) ); 1895cdf0e10cSrcweir 1896cdf0e10cSrcweir rtl_freeMemory( pColBuf ); 1897cdf0e10cSrcweir aNewBmp.ReleaseAccess( pWAcc ); 1898cdf0e10cSrcweir bRet = sal_True; 1899cdf0e10cSrcweir } 1900cdf0e10cSrcweir 1901cdf0e10cSrcweir ReleaseAccess( pRAcc ); 1902cdf0e10cSrcweir 1903cdf0e10cSrcweir if( bRet ) 1904cdf0e10cSrcweir { 1905cdf0e10cSrcweir const MapMode aMap( maPrefMapMode ); 1906cdf0e10cSrcweir const Size aSize( maPrefSize ); 1907cdf0e10cSrcweir 1908cdf0e10cSrcweir *this = aNewBmp; 1909cdf0e10cSrcweir maPrefMapMode = aMap; 1910cdf0e10cSrcweir maPrefSize = aSize; 1911cdf0e10cSrcweir } 1912cdf0e10cSrcweir } 1913cdf0e10cSrcweir 1914cdf0e10cSrcweir return bRet; 1915cdf0e10cSrcweir } 1916cdf0e10cSrcweir 1917cdf0e10cSrcweir // ------------------------------------------------------------------------ 1918cdf0e10cSrcweir 1919cdf0e10cSrcweir void Bitmap::ImplMedianCut( sal_uLong* pColBuf, BitmapPalette& rPal, 1920cdf0e10cSrcweir long nR1, long nR2, long nG1, long nG2, long nB1, long nB2, 1921cdf0e10cSrcweir long nColors, long nPixels, long& rIndex ) 1922cdf0e10cSrcweir { 1923cdf0e10cSrcweir if( !nPixels ) 1924cdf0e10cSrcweir return; 1925cdf0e10cSrcweir 1926cdf0e10cSrcweir BitmapColor aCol; 1927cdf0e10cSrcweir const long nRLen = nR2 - nR1; 1928cdf0e10cSrcweir const long nGLen = nG2 - nG1; 1929cdf0e10cSrcweir const long nBLen = nB2 - nB1; 1930cdf0e10cSrcweir long nR, nG, nB; 1931cdf0e10cSrcweir sal_uLong* pBuf = pColBuf; 1932cdf0e10cSrcweir 1933cdf0e10cSrcweir if( !nRLen && !nGLen && !nBLen ) 1934cdf0e10cSrcweir { 1935cdf0e10cSrcweir if( pBuf[ RGB15( nR1, nG1, nB1 ) ] ) 1936cdf0e10cSrcweir { 1937cdf0e10cSrcweir aCol.SetRed( (sal_uInt8) ( nR1 << 3 ) ); 1938cdf0e10cSrcweir aCol.SetGreen( (sal_uInt8) ( nG1 << 3 ) ); 1939cdf0e10cSrcweir aCol.SetBlue( (sal_uInt8) ( nB1 << 3 ) ); 1940cdf0e10cSrcweir rPal[ (sal_uInt16) rIndex++ ] = aCol; 1941cdf0e10cSrcweir } 1942cdf0e10cSrcweir } 1943cdf0e10cSrcweir else 1944cdf0e10cSrcweir { 1945cdf0e10cSrcweir if( 1 == nColors || 1 == nPixels ) 1946cdf0e10cSrcweir { 1947cdf0e10cSrcweir long nPixSum = 0, nRSum = 0, nGSum = 0, nBSum = 0; 1948cdf0e10cSrcweir 1949cdf0e10cSrcweir for( nR = nR1; nR <= nR2; nR++ ) 1950cdf0e10cSrcweir { 1951cdf0e10cSrcweir for( nG = nG1; nG <= nG2; nG++ ) 1952cdf0e10cSrcweir { 1953cdf0e10cSrcweir for( nB = nB1; nB <= nB2; nB++ ) 1954cdf0e10cSrcweir { 1955cdf0e10cSrcweir nPixSum = pBuf[ RGB15( nR, nG, nB ) ]; 1956cdf0e10cSrcweir 1957cdf0e10cSrcweir if( nPixSum ) 1958cdf0e10cSrcweir { 1959cdf0e10cSrcweir nRSum += nR * nPixSum; 1960cdf0e10cSrcweir nGSum += nG * nPixSum; 1961cdf0e10cSrcweir nBSum += nB * nPixSum; 1962cdf0e10cSrcweir } 1963cdf0e10cSrcweir } 1964cdf0e10cSrcweir } 1965cdf0e10cSrcweir } 1966cdf0e10cSrcweir 1967cdf0e10cSrcweir aCol.SetRed( (sal_uInt8) ( ( nRSum / nPixels ) << 3 ) ); 1968cdf0e10cSrcweir aCol.SetGreen( (sal_uInt8) ( ( nGSum / nPixels ) << 3 ) ); 1969cdf0e10cSrcweir aCol.SetBlue( (sal_uInt8) ( ( nBSum / nPixels ) << 3 ) ); 1970cdf0e10cSrcweir rPal[ (sal_uInt16) rIndex++ ] = aCol; 1971cdf0e10cSrcweir } 1972cdf0e10cSrcweir else 1973cdf0e10cSrcweir { 1974cdf0e10cSrcweir const long nTest = ( nPixels >> 1 ); 1975cdf0e10cSrcweir long nPixOld = 0; 1976cdf0e10cSrcweir long nPixNew = 0; 1977cdf0e10cSrcweir 1978cdf0e10cSrcweir if( nBLen > nGLen && nBLen > nRLen ) 1979cdf0e10cSrcweir { 1980cdf0e10cSrcweir nB = nB1 - 1; 1981cdf0e10cSrcweir 1982cdf0e10cSrcweir while( nPixNew < nTest ) 1983cdf0e10cSrcweir { 1984cdf0e10cSrcweir nB++, nPixOld = nPixNew; 1985cdf0e10cSrcweir for( nR = nR1; nR <= nR2; nR++ ) 1986cdf0e10cSrcweir for( nG = nG1; nG <= nG2; nG++ ) 1987cdf0e10cSrcweir nPixNew += pBuf[ RGB15( nR, nG, nB ) ]; 1988cdf0e10cSrcweir } 1989cdf0e10cSrcweir 1990cdf0e10cSrcweir if( nB < nB2 ) 1991cdf0e10cSrcweir { 1992cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB1, nB, nColors >> 1, nPixNew, rIndex ); 1993cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB + 1, nB2, nColors >> 1, nPixels - nPixNew, rIndex ); 1994cdf0e10cSrcweir } 1995cdf0e10cSrcweir else 1996cdf0e10cSrcweir { 1997cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB1, nB - 1, nColors >> 1, nPixOld, rIndex ); 1998cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG2, nB, nB2, nColors >> 1, nPixels - nPixOld, rIndex ); 1999cdf0e10cSrcweir } 2000cdf0e10cSrcweir } 2001cdf0e10cSrcweir else if( nGLen > nRLen ) 2002cdf0e10cSrcweir { 2003cdf0e10cSrcweir nG = nG1 - 1; 2004cdf0e10cSrcweir 2005cdf0e10cSrcweir while( nPixNew < nTest ) 2006cdf0e10cSrcweir { 2007cdf0e10cSrcweir nG++, nPixOld = nPixNew; 2008cdf0e10cSrcweir for( nR = nR1; nR <= nR2; nR++ ) 2009cdf0e10cSrcweir for( nB = nB1; nB <= nB2; nB++ ) 2010cdf0e10cSrcweir nPixNew += pBuf[ RGB15( nR, nG, nB ) ]; 2011cdf0e10cSrcweir } 2012cdf0e10cSrcweir 2013cdf0e10cSrcweir if( nG < nG2 ) 2014cdf0e10cSrcweir { 2015cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG, nB1, nB2, nColors >> 1, nPixNew, rIndex ); 2016cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG + 1, nG2, nB1, nB2, nColors >> 1, nPixels - nPixNew, rIndex ); 2017cdf0e10cSrcweir } 2018cdf0e10cSrcweir else 2019cdf0e10cSrcweir { 2020cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG1, nG - 1, nB1, nB2, nColors >> 1, nPixOld, rIndex ); 2021cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR2, nG, nG2, nB1, nB2, nColors >> 1, nPixels - nPixOld, rIndex ); 2022cdf0e10cSrcweir } 2023cdf0e10cSrcweir } 2024cdf0e10cSrcweir else 2025cdf0e10cSrcweir { 2026cdf0e10cSrcweir nR = nR1 - 1; 2027cdf0e10cSrcweir 2028cdf0e10cSrcweir while( nPixNew < nTest ) 2029cdf0e10cSrcweir { 2030cdf0e10cSrcweir nR++, nPixOld = nPixNew; 2031cdf0e10cSrcweir for( nG = nG1; nG <= nG2; nG++ ) 2032cdf0e10cSrcweir for( nB = nB1; nB <= nB2; nB++ ) 2033cdf0e10cSrcweir nPixNew += pBuf[ RGB15( nR, nG, nB ) ]; 2034cdf0e10cSrcweir } 2035cdf0e10cSrcweir 2036cdf0e10cSrcweir if( nR < nR2 ) 2037cdf0e10cSrcweir { 2038cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR, nG1, nG2, nB1, nB2, nColors >> 1, nPixNew, rIndex ); 2039cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1 + 1, nR2, nG1, nG2, nB1, nB2, nColors >> 1, nPixels - nPixNew, rIndex ); 2040cdf0e10cSrcweir } 2041cdf0e10cSrcweir else 2042cdf0e10cSrcweir { 2043cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR1, nR - 1, nG1, nG2, nB1, nB2, nColors >> 1, nPixOld, rIndex ); 2044cdf0e10cSrcweir ImplMedianCut( pBuf, rPal, nR, nR2, nG1, nG2, nB1, nB2, nColors >> 1, nPixels - nPixOld, rIndex ); 2045cdf0e10cSrcweir } 2046cdf0e10cSrcweir } 2047cdf0e10cSrcweir } 2048cdf0e10cSrcweir } 2049cdf0e10cSrcweir } 2050cdf0e10cSrcweir 2051cdf0e10cSrcweir // ------------------------------------------------------------------------ 2052cdf0e10cSrcweir 2053cdf0e10cSrcweir sal_Bool Bitmap::Vectorize( PolyPolygon& rPolyPoly, sal_uLong nFlags, const Link* pProgress ) 2054cdf0e10cSrcweir { 2055cdf0e10cSrcweir return ImplVectorizer().ImplVectorize( *this, rPolyPoly, nFlags, pProgress ); 2056cdf0e10cSrcweir } 2057cdf0e10cSrcweir 2058cdf0e10cSrcweir // ------------------------------------------------------------------------ 2059cdf0e10cSrcweir 2060cdf0e10cSrcweir sal_Bool Bitmap::Vectorize( GDIMetaFile& rMtf, sal_uInt8 cReduce, sal_uLong nFlags, const Link* pProgress ) 2061cdf0e10cSrcweir { 2062cdf0e10cSrcweir return ImplVectorizer().ImplVectorize( *this, rMtf, cReduce, nFlags, pProgress ); 2063cdf0e10cSrcweir } 2064cdf0e10cSrcweir 2065cdf0e10cSrcweir // ------------------------------------------------------------------------ 2066cdf0e10cSrcweir 2067cdf0e10cSrcweir sal_Bool Bitmap::Adjust( short nLuminancePercent, short nContrastPercent, 2068cdf0e10cSrcweir short nChannelRPercent, short nChannelGPercent, short nChannelBPercent, 2069cdf0e10cSrcweir double fGamma, sal_Bool bInvert ) 2070cdf0e10cSrcweir { 2071cdf0e10cSrcweir sal_Bool bRet = sal_False; 2072cdf0e10cSrcweir 2073cdf0e10cSrcweir // nothing to do => return quickly 2074cdf0e10cSrcweir if( !nLuminancePercent && !nContrastPercent && 2075cdf0e10cSrcweir !nChannelRPercent && !nChannelGPercent && !nChannelBPercent && 2076cdf0e10cSrcweir ( fGamma == 1.0 ) && !bInvert ) 2077cdf0e10cSrcweir { 2078cdf0e10cSrcweir bRet = sal_True; 2079cdf0e10cSrcweir } 2080cdf0e10cSrcweir else 2081cdf0e10cSrcweir { 2082cdf0e10cSrcweir BitmapWriteAccess* pAcc = AcquireWriteAccess(); 2083cdf0e10cSrcweir 2084cdf0e10cSrcweir if( pAcc ) 2085cdf0e10cSrcweir { 2086cdf0e10cSrcweir BitmapColor aCol; 2087cdf0e10cSrcweir const long nW = pAcc->Width(); 2088cdf0e10cSrcweir const long nH = pAcc->Height(); 2089cdf0e10cSrcweir sal_uInt8* cMapR = new sal_uInt8[ 256 ]; 2090cdf0e10cSrcweir sal_uInt8* cMapG = new sal_uInt8[ 256 ]; 2091cdf0e10cSrcweir sal_uInt8* cMapB = new sal_uInt8[ 256 ]; 2092cdf0e10cSrcweir long nX, nY; 2093cdf0e10cSrcweir double fM, fROff, fGOff, fBOff, fOff; 2094cdf0e10cSrcweir 2095cdf0e10cSrcweir // calculate slope 2096cdf0e10cSrcweir if( nContrastPercent >= 0 ) 2097cdf0e10cSrcweir fM = 128.0 / ( 128.0 - 1.27 * MinMax( nContrastPercent, 0L, 100L ) ); 2098cdf0e10cSrcweir else 2099cdf0e10cSrcweir fM = ( 128.0 + 1.27 * MinMax( nContrastPercent, -100L, 0L ) ) / 128.0; 2100cdf0e10cSrcweir 2101cdf0e10cSrcweir // total offset = luminance offset + contrast offset 2102cdf0e10cSrcweir fOff = MinMax( nLuminancePercent, -100L, 100L ) * 2.55 + 128.0 - fM * 128.0; 2103cdf0e10cSrcweir 2104cdf0e10cSrcweir // channel offset = channel offset + total offset 2105cdf0e10cSrcweir fROff = nChannelRPercent * 2.55 + fOff; 2106cdf0e10cSrcweir fGOff = nChannelGPercent * 2.55 + fOff; 2107cdf0e10cSrcweir fBOff = nChannelBPercent * 2.55 + fOff; 2108cdf0e10cSrcweir 2109cdf0e10cSrcweir // calculate gamma value 2110cdf0e10cSrcweir fGamma = ( fGamma <= 0.0 || fGamma > 10.0 ) ? 1.0 : ( 1.0 / fGamma ); 2111cdf0e10cSrcweir const sal_Bool bGamma = ( fGamma != 1.0 ); 2112cdf0e10cSrcweir 2113cdf0e10cSrcweir // create mapping table 2114cdf0e10cSrcweir for( nX = 0L; nX < 256L; nX++ ) 2115cdf0e10cSrcweir { 2116cdf0e10cSrcweir cMapR[ nX ] = (sal_uInt8) MinMax( FRound( nX * fM + fROff ), 0L, 255L ); 2117cdf0e10cSrcweir cMapG[ nX ] = (sal_uInt8) MinMax( FRound( nX * fM + fGOff ), 0L, 255L ); 2118cdf0e10cSrcweir cMapB[ nX ] = (sal_uInt8) MinMax( FRound( nX * fM + fBOff ), 0L, 255L ); 2119cdf0e10cSrcweir 2120cdf0e10cSrcweir if( bGamma ) 2121cdf0e10cSrcweir { 2122cdf0e10cSrcweir cMapR[ nX ] = GAMMA( cMapR[ nX ], fGamma ); 2123cdf0e10cSrcweir cMapG[ nX ] = GAMMA( cMapG[ nX ], fGamma ); 2124cdf0e10cSrcweir cMapB[ nX ] = GAMMA( cMapB[ nX ], fGamma ); 2125cdf0e10cSrcweir } 2126cdf0e10cSrcweir 2127cdf0e10cSrcweir if( bInvert ) 2128cdf0e10cSrcweir { 2129cdf0e10cSrcweir cMapR[ nX ] = ~cMapR[ nX ]; 2130cdf0e10cSrcweir cMapG[ nX ] = ~cMapG[ nX ]; 2131cdf0e10cSrcweir cMapB[ nX ] = ~cMapB[ nX ]; 2132cdf0e10cSrcweir } 2133cdf0e10cSrcweir } 2134cdf0e10cSrcweir 2135cdf0e10cSrcweir // do modifying 2136cdf0e10cSrcweir if( pAcc->HasPalette() ) 2137cdf0e10cSrcweir { 2138cdf0e10cSrcweir BitmapColor aNewCol; 2139cdf0e10cSrcweir 2140cdf0e10cSrcweir for( sal_uInt16 i = 0, nCount = pAcc->GetPaletteEntryCount(); i < nCount; i++ ) 2141cdf0e10cSrcweir { 2142cdf0e10cSrcweir const BitmapColor& rCol = pAcc->GetPaletteColor( i ); 2143cdf0e10cSrcweir aNewCol.SetRed( cMapR[ rCol.GetRed() ] ); 2144cdf0e10cSrcweir aNewCol.SetGreen( cMapG[ rCol.GetGreen() ] ); 2145cdf0e10cSrcweir aNewCol.SetBlue( cMapB[ rCol.GetBlue() ] ); 2146cdf0e10cSrcweir pAcc->SetPaletteColor( i, aNewCol ); 2147cdf0e10cSrcweir } 2148cdf0e10cSrcweir } 2149cdf0e10cSrcweir else if( pAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_BGR ) 2150cdf0e10cSrcweir { 2151cdf0e10cSrcweir for( nY = 0L; nY < nH; nY++ ) 2152cdf0e10cSrcweir { 2153cdf0e10cSrcweir Scanline pScan = pAcc->GetScanline( nY ); 2154cdf0e10cSrcweir 2155cdf0e10cSrcweir for( nX = 0L; nX < nW; nX++ ) 2156cdf0e10cSrcweir { 2157cdf0e10cSrcweir *pScan = cMapB[ *pScan ]; pScan++; 2158cdf0e10cSrcweir *pScan = cMapG[ *pScan ]; pScan++; 2159cdf0e10cSrcweir *pScan = cMapR[ *pScan ]; pScan++; 2160cdf0e10cSrcweir } 2161cdf0e10cSrcweir } 2162cdf0e10cSrcweir } 2163cdf0e10cSrcweir else if( pAcc->GetScanlineFormat() == BMP_FORMAT_24BIT_TC_RGB ) 2164cdf0e10cSrcweir { 2165cdf0e10cSrcweir for( nY = 0L; nY < nH; nY++ ) 2166cdf0e10cSrcweir { 2167cdf0e10cSrcweir Scanline pScan = pAcc->GetScanline( nY ); 2168cdf0e10cSrcweir 2169cdf0e10cSrcweir for( nX = 0L; nX < nW; nX++ ) 2170cdf0e10cSrcweir { 2171cdf0e10cSrcweir *pScan = cMapR[ *pScan ]; pScan++; 2172cdf0e10cSrcweir *pScan = cMapG[ *pScan ]; pScan++; 2173cdf0e10cSrcweir *pScan = cMapB[ *pScan ]; pScan++; 2174cdf0e10cSrcweir } 2175cdf0e10cSrcweir } 2176cdf0e10cSrcweir } 2177cdf0e10cSrcweir else 2178cdf0e10cSrcweir { 2179cdf0e10cSrcweir for( nY = 0L; nY < nH; nY++ ) 2180cdf0e10cSrcweir { 2181cdf0e10cSrcweir for( nX = 0L; nX < nW; nX++ ) 2182cdf0e10cSrcweir { 2183cdf0e10cSrcweir aCol = pAcc->GetPixel( nY, nX ); 2184cdf0e10cSrcweir aCol.SetRed( cMapR[ aCol.GetRed() ] ); 2185cdf0e10cSrcweir aCol.SetGreen( cMapG[ aCol.GetGreen() ] ); 2186cdf0e10cSrcweir aCol.SetBlue( cMapB[ aCol.GetBlue() ] ); 2187cdf0e10cSrcweir pAcc->SetPixel( nY, nX, aCol ); 2188cdf0e10cSrcweir } 2189cdf0e10cSrcweir } 2190cdf0e10cSrcweir } 2191cdf0e10cSrcweir 2192cdf0e10cSrcweir delete[] cMapR; 2193cdf0e10cSrcweir delete[] cMapG; 2194cdf0e10cSrcweir delete[] cMapB; 2195cdf0e10cSrcweir ReleaseAccess( pAcc ); 2196cdf0e10cSrcweir bRet = sal_True; 2197cdf0e10cSrcweir } 2198cdf0e10cSrcweir } 2199cdf0e10cSrcweir 2200cdf0e10cSrcweir return bRet; 2201cdf0e10cSrcweir } 2202