vcl/source/bitmap/floyd.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #define CALC_ERRORS                                                             \
  23                         nTemp = p1T[nX++] >> 12;                              \
  24                         nBErr = MinMax( nTemp, 0, 255 );                        \
  25                         nBErr = nBErr - FloydIndexMap[ nBC = FloydMap[nBErr] ]; \
  26                         nTemp = p1T[nX++] >> 12;                              \
  27                         nGErr = MinMax( nTemp, 0, 255 );                        \
  28                         nGErr = nGErr - FloydIndexMap[ nGC = FloydMap[nGErr] ]; \
  29                         nTemp = p1T[nX] >> 12;                                \
  30                         nRErr = MinMax( nTemp, 0, 255 );                        \
  31                         nRErr = nRErr - FloydIndexMap[ nRC = FloydMap[nRErr] ];
  32
  33 #define CALC_TABLES3                                        \
  34                         p2T[nX++] += FloydError3[nBErr];    \
  35                         p2T[nX++] += FloydError3[nGErr];    \
  36                         p2T[nX++] += FloydError3[nRErr];
  37
  38 #define CALC_TABLES5                                        \
  39                         p2T[nX++] += FloydError5[nBErr];    \
  40                         p2T[nX++] += FloydError5[nGErr];    \
  41                         p2T[nX++] += FloydError5[nRErr];
  42
  43 #define CALC_TABLES7                                        \
  44                         p1T[++nX] += FloydError7[nBErr];    \
  45                         p2T[nX++] += FloydError1[nBErr];    \
  46                         p1T[nX] += FloydError7[nGErr];      \
  47                         p2T[nX++] += FloydError1[nGErr];    \
  48                         p1T[nX] += FloydError7[nRErr];      \
  49                         p2T[nX] += FloydError1[nRErr];
  50
  51 const extern sal_uLong nVCLRLut[ 6 ] = { 16, 17, 18, 19, 20, 21 };
  52 const extern sal_uLong nVCLGLut[ 6 ] = { 0, 6, 12, 18, 24, 30 };
  53 const extern sal_uLong nVCLBLut[ 6 ] = { 0, 36, 72, 108, 144, 180 };
  54
  55 const extern sal_uLong nVCLDitherLut[ 256 ] =
  56 {
  57        0, 49152, 12288, 61440,  3072, 52224, 15360, 64512,   768, 49920, 13056,
  58    62208,  3840, 52992, 16128, 65280, 32768, 16384, 45056, 28672, 35840, 19456,
  59    48128, 31744, 33536, 17152, 45824, 29440, 36608, 20224, 48896, 32512, 8192,
  60    57344,  4096, 53248, 11264, 60416,  7168, 56320,  8960, 58112,  4864, 54016,
  61    12032, 61184,  7936, 57088, 40960, 24576, 36864, 20480, 44032, 27648, 39936,
  62    23552, 41728, 25344, 37632, 21248, 44800, 28416, 40704, 24320, 2048, 51200,
  63    14336, 63488,  1024, 50176, 13312, 62464,  2816, 51968, 15104, 64256,  1792,
  64    50944, 14080, 63232, 34816, 18432, 47104, 30720, 33792, 17408, 46080, 29696,
  65    35584, 19200, 47872, 31488, 34560, 18176, 46848, 30464, 10240, 59392,  6144,
  66    55296,  9216, 58368,  5120, 54272, 11008, 60160,  6912, 56064,  9984, 59136,
  67     5888, 55040, 43008, 26624, 38912, 22528, 41984, 25600, 37888, 21504, 43776,
  68    27392, 39680, 23296, 42752, 26368, 38656, 22272,   512, 49664, 12800, 61952,
  69     3584, 52736, 15872, 65024,   256, 49408, 12544, 61696,  3328, 52480, 15616,
  70    64768, 33280, 16896, 45568, 29184, 36352, 19968, 48640, 32256, 33024, 16640,
  71    45312, 28928, 36096, 19712, 48384, 32000,  8704, 57856,  4608, 53760, 11776,
  72    60928,  7680, 56832,  8448, 57600,  4352, 53504, 11520, 60672,  7424, 56576,
  73    41472, 25088, 37376, 20992, 44544, 28160, 40448, 24064, 41216, 24832, 37120,
  74    20736, 44288, 27904, 40192, 23808,  2560, 51712, 14848, 64000,  1536, 50688,
  75    13824, 62976,  2304, 51456, 14592, 63744,  1280, 50432, 13568, 62720, 35328,
  76    18944, 47616, 31232, 34304, 17920, 46592, 30208, 35072, 18688, 47360, 30976,
  77    34048, 17664, 46336, 29952, 10752, 59904,  6656, 55808,  9728, 58880,  5632,
  78    54784, 10496, 59648,  6400, 55552,  9472, 58624,  5376, 54528, 43520, 27136,
  79    39424, 23040, 42496, 26112, 38400, 22016, 43264, 26880, 39168, 22784, 42240,
  80    25856, 38144, 21760
  81 };
  82
  83 const extern sal_uLong nVCLLut[ 256 ] =
  84 {
  85          0,  1286,  2572,  3858,  5144,  6430,  7716,  9002,
  86      10288, 11574, 12860, 14146, 15432, 16718, 18004, 19290,
  87      20576, 21862, 23148, 24434, 25720, 27006, 28292, 29578,
  88      30864, 32150, 33436, 34722, 36008, 37294, 38580, 39866,
  89      41152, 42438, 43724, 45010, 46296, 47582, 48868, 50154,
  90      51440, 52726, 54012, 55298, 56584, 57870, 59156, 60442,
  91      61728, 63014, 64300, 65586, 66872, 68158, 69444, 70730,
  92      72016, 73302, 74588, 75874, 77160, 78446, 79732, 81018,
  93      82304, 83590, 84876, 86162, 87448, 88734, 90020, 91306,
  94      92592, 93878, 95164, 96450, 97736, 99022,100308,101594,
  95     102880,104166,105452,106738,108024,109310,110596,111882,
  96     113168,114454,115740,117026,118312,119598,120884,122170,
  97     123456,124742,126028,127314,128600,129886,131172,132458,
  98     133744,135030,136316,137602,138888,140174,141460,142746,
  99     144032,145318,146604,147890,149176,150462,151748,153034,
 100     154320,155606,156892,158178,159464,160750,162036,163322,
 101     164608,165894,167180,168466,169752,171038,172324,173610,
 102     174896,176182,177468,178754,180040,181326,182612,183898,
 103     185184,186470,187756,189042,190328,191614,192900,194186,
 104     195472,196758,198044,199330,200616,201902,203188,204474,
 105     205760,207046,208332,209618,210904,212190,213476,214762,
 106     216048,217334,218620,219906,221192,222478,223764,225050,
 107     226336,227622,228908,230194,231480,232766,234052,235338,
 108     236624,237910,239196,240482,241768,243054,244340,245626,
 109     246912,248198,249484,250770,252056,253342,254628,255914,
 110     257200,258486,259772,261058,262344,263630,264916,266202,
 111     267488,268774,270060,271346,272632,273918,275204,276490,
 112     277776,279062,280348,281634,282920,284206,285492,286778,
 113     288064,289350,290636,291922,293208,294494,295780,297066,
 114     298352,299638,300924,302210,303496,304782,306068,307354,
 115     308640,309926,311212,312498,313784,315070,316356,317642,
 116     318928,320214,321500,322786,324072,325358,326644,327930
 117 };
 118
 119 const tools::Long FloydMap[256] =
 120 {
 121     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 122     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
 123     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 124     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 125     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
 126     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 127     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 128     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 129     3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 130     3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 131     3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 132     3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
 133     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
 134     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
 135     4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
 136     5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5
 137 };
 138
 139 const tools::Long FloydError1[61] =
 140 {
 141     -7680, -7424, -7168, -6912, -6656, -6400, -6144,
 142     -5888, -5632, -5376, -5120, -4864, -4608, -4352,
 143     -4096, -3840, -3584, -3328, -3072, -2816, -2560,
 144     -2304, -2048, -1792, -1536, -1280, -1024, -768,
 145     -512, -256, 0, 256, 512, 768, 1024, 1280, 1536,
 146     1792, 2048, 2304, 2560, 2816, 3072, 3328, 3584,
 147     3840, 4096, 4352, 4608, 4864, 5120, 5376, 5632,
 148     5888, 6144, 6400, 6656, 6912, 7168, 7424, 7680
 149 };
 150
 151 const tools::Long FloydError3[61] =
 152 {
 153     -23040, -22272, -21504, -20736, -19968, -19200,
 154     -18432, -17664, -16896, -16128, -15360, -14592,
 155     -13824, -13056, -12288, -11520, -10752, -9984,
 156     -9216, -8448, -7680, -6912, -6144, -5376, -4608,
 157     -3840, -3072, -2304, -1536, -768, 0, 768, 1536,
 158     2304, 3072, 3840, 4608, 5376, 6144, 6912, 7680,
 159     8448, 9216, 9984, 10752, 11520, 12288, 13056,
 160     13824, 14592, 15360, 16128, 16896, 17664, 18432,
 161     19200, 19968, 20736, 21504, 22272, 23040
 162 };
 163
 164 const tools::Long FloydError5[61] =
 165 {
 166     -38400, -37120, -35840, -34560, -33280, -32000,
 167     -30720, -29440, -28160, -26880, -25600, -24320,
 168     -23040, -21760, -20480, -19200, -17920, -16640,
 169     -15360, -14080, -12800, -11520, -10240, -8960,
 170     -7680, -6400, -5120, -3840, -2560, -1280,   0,
 171     1280, 2560, 3840, 5120, 6400, 7680, 8960, 10240,
 172     11520, 12800, 14080, 15360, 16640, 17920, 19200,
 173     20480, 21760, 23040, 24320, 25600, 26880, 28160,
 174     29440, 30720, 32000, 33280, 34560, 35840, 37120,
 175     38400
 176 };
 177
 178 const tools::Long FloydError7[61] =
 179 {
 180     -53760, -51968, -50176, -48384, -46592, -44800,
 181     -43008, -41216, -39424, -37632, -35840, -34048,
 182     -32256, -30464, -28672, -26880, -25088, -23296,
 183     -21504, -19712, -17920, -16128, -14336, -12544,
 184     -10752, -8960, -7168, -5376, -3584, -1792,  0,
 185     1792, 3584, 5376, 7168, 8960, 10752, 12544, 14336,
 186     16128, 17920, 19712, 21504, 23296, 25088, 26880,
 187     28672, 30464, 32256, 34048, 35840, 37632, 39424,
 188     41216, 43008, 44800, 46592, 48384, 50176, 51968,
 189     53760
 190 };
 191
 192 const tools::Long FloydIndexMap[6] =
 193 {
 194     -30,  21, 72, 123, 174, 225
 195 };
 196
 197 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */