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 const extern sal_uLong nVCLRLut[ 6 ] = { 16, 17, 18, 19, 20, 21 };
  23 const extern sal_uLong nVCLGLut[ 6 ] = { 0, 6, 12, 18, 24, 30 };
  24 const extern sal_uLong nVCLBLut[ 6 ] = { 0, 36, 72, 108, 144, 180 };
  25
  26 const extern sal_uLong nVCLDitherLut[ 256 ] =
  27 {
  28        0, 49152, 12288, 61440,  3072, 52224, 15360, 64512,   768, 49920, 13056,
  29    62208,  3840, 52992, 16128, 65280, 32768, 16384, 45056, 28672, 35840, 19456,
  30    48128, 31744, 33536, 17152, 45824, 29440, 36608, 20224, 48896, 32512, 8192,
  31    57344,  4096, 53248, 11264, 60416,  7168, 56320,  8960, 58112,  4864, 54016,
  32    12032, 61184,  7936, 57088, 40960, 24576, 36864, 20480, 44032, 27648, 39936,
  33    23552, 41728, 25344, 37632, 21248, 44800, 28416, 40704, 24320, 2048, 51200,
  34    14336, 63488,  1024, 50176, 13312, 62464,  2816, 51968, 15104, 64256,  1792,
  35    50944, 14080, 63232, 34816, 18432, 47104, 30720, 33792, 17408, 46080, 29696,
  36    35584, 19200, 47872, 31488, 34560, 18176, 46848, 30464, 10240, 59392,  6144,
  37    55296,  9216, 58368,  5120, 54272, 11008, 60160,  6912, 56064,  9984, 59136,
  38     5888, 55040, 43008, 26624, 38912, 22528, 41984, 25600, 37888, 21504, 43776,
  39    27392, 39680, 23296, 42752, 26368, 38656, 22272,   512, 49664, 12800, 61952,
  40     3584, 52736, 15872, 65024,   256, 49408, 12544, 61696,  3328, 52480, 15616,
  41    64768, 33280, 16896, 45568, 29184, 36352, 19968, 48640, 32256, 33024, 16640,
  42    45312, 28928, 36096, 19712, 48384, 32000,  8704, 57856,  4608, 53760, 11776,
  43    60928,  7680, 56832,  8448, 57600,  4352, 53504, 11520, 60672,  7424, 56576,
  44    41472, 25088, 37376, 20992, 44544, 28160, 40448, 24064, 41216, 24832, 37120,
  45    20736, 44288, 27904, 40192, 23808,  2560, 51712, 14848, 64000,  1536, 50688,
  46    13824, 62976,  2304, 51456, 14592, 63744,  1280, 50432, 13568, 62720, 35328,
  47    18944, 47616, 31232, 34304, 17920, 46592, 30208, 35072, 18688, 47360, 30976,
  48    34048, 17664, 46336, 29952, 10752, 59904,  6656, 55808,  9728, 58880,  5632,
  49    54784, 10496, 59648,  6400, 55552,  9472, 58624,  5376, 54528, 43520, 27136,
  50    39424, 23040, 42496, 26112, 38400, 22016, 43264, 26880, 39168, 22784, 42240,
  51    25856, 38144, 21760
  52 };
  53
  54 const extern sal_uLong nVCLLut[ 256 ] =
  55 {
  56          0,  1286,  2572,  3858,  5144,  6430,  7716,  9002,
  57      10288, 11574, 12860, 14146, 15432, 16718, 18004, 19290,
  58      20576, 21862, 23148, 24434, 25720, 27006, 28292, 29578,
  59      30864, 32150, 33436, 34722, 36008, 37294, 38580, 39866,
  60      41152, 42438, 43724, 45010, 46296, 47582, 48868, 50154,
  61      51440, 52726, 54012, 55298, 56584, 57870, 59156, 60442,
  62      61728, 63014, 64300, 65586, 66872, 68158, 69444, 70730,
  63      72016, 73302, 74588, 75874, 77160, 78446, 79732, 81018,
  64      82304, 83590, 84876, 86162, 87448, 88734, 90020, 91306,
  65      92592, 93878, 95164, 96450, 97736, 99022,100308,101594,
  66     102880,104166,105452,106738,108024,109310,110596,111882,
  67     113168,114454,115740,117026,118312,119598,120884,122170,
  68     123456,124742,126028,127314,128600,129886,131172,132458,
  69     133744,135030,136316,137602,138888,140174,141460,142746,
  70     144032,145318,146604,147890,149176,150462,151748,153034,
  71     154320,155606,156892,158178,159464,160750,162036,163322,
  72     164608,165894,167180,168466,169752,171038,172324,173610,
  73     174896,176182,177468,178754,180040,181326,182612,183898,
  74     185184,186470,187756,189042,190328,191614,192900,194186,
  75     195472,196758,198044,199330,200616,201902,203188,204474,
  76     205760,207046,208332,209618,210904,212190,213476,214762,
  77     216048,217334,218620,219906,221192,222478,223764,225050,
  78     226336,227622,228908,230194,231480,232766,234052,235338,
  79     236624,237910,239196,240482,241768,243054,244340,245626,
  80     246912,248198,249484,250770,252056,253342,254628,255914,
  81     257200,258486,259772,261058,262344,263630,264916,266202,
  82     267488,268774,270060,271346,272632,273918,275204,276490,
  83     277776,279062,280348,281634,282920,284206,285492,286778,
  84     288064,289350,290636,291922,293208,294494,295780,297066,
  85     298352,299638,300924,302210,303496,304782,306068,307354,
  86     308640,309926,311212,312498,313784,315070,316356,317642,
  87     318928,320214,321500,322786,324072,325358,326644,327930
  88 };
  89
  90 const int FloydMap[256] =
  91 {
  92     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  93     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
  94     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  95     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
  96     1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2,
  97     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  98     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
  99     2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
 100     3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 101     3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 102     3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 103     3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
 104     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
 105     4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
 106     4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
 107     5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5
 108 };
 109
 110 constexpr int FloydErrMap[256]
 111     = { 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
 112         52, 53, 54, 55, 5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
 113         23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44,
 114         45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15,
 115         16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
 116         38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 5,  6,  7,  8,
 117         9,  10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
 118         31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
 119         53, 54, 55, 5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
 120         24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
 121         46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 5,  6,  7,  8,  9,  10, 11, 12, 13, 14, 15, 16,
 122         17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30 };
 123
 124 constexpr int FloydError1[61] =
 125 {
 126     -7680, -7424, -7168, -6912, -6656, -6400, -6144,
 127     -5888, -5632, -5376, -5120, -4864, -4608, -4352,
 128     -4096, -3840, -3584, -3328, -3072, -2816, -2560,
 129     -2304, -2048, -1792, -1536, -1280, -1024, -768,
 130     -512, -256, 0, 256, 512, 768, 1024, 1280, 1536,
 131     1792, 2048, 2304, 2560, 2816, 3072, 3328, 3584,
 132     3840, 4096, 4352, 4608, 4864, 5120, 5376, 5632,
 133     5888, 6144, 6400, 6656, 6912, 7168, 7424, 7680
 134 };
 135
 136 constexpr int FloydError3[61] =
 137 {
 138     -23040, -22272, -21504, -20736, -19968, -19200,
 139     -18432, -17664, -16896, -16128, -15360, -14592,
 140     -13824, -13056, -12288, -11520, -10752, -9984,
 141     -9216, -8448, -7680, -6912, -6144, -5376, -4608,
 142     -3840, -3072, -2304, -1536, -768, 0, 768, 1536,
 143     2304, 3072, 3840, 4608, 5376, 6144, 6912, 7680,
 144     8448, 9216, 9984, 10752, 11520, 12288, 13056,
 145     13824, 14592, 15360, 16128, 16896, 17664, 18432,
 146     19200, 19968, 20736, 21504, 22272, 23040
 147 };
 148
 149 constexpr int FloydError5[61] =
 150 {
 151     -38400, -37120, -35840, -34560, -33280, -32000,
 152     -30720, -29440, -28160, -26880, -25600, -24320,
 153     -23040, -21760, -20480, -19200, -17920, -16640,
 154     -15360, -14080, -12800, -11520, -10240, -8960,
 155     -7680, -6400, -5120, -3840, -2560, -1280,   0,
 156     1280, 2560, 3840, 5120, 6400, 7680, 8960, 10240,
 157     11520, 12800, 14080, 15360, 16640, 17920, 19200,
 158     20480, 21760, 23040, 24320, 25600, 26880, 28160,
 159     29440, 30720, 32000, 33280, 34560, 35840, 37120,
 160     38400
 161 };
 162
 163 constexpr int FloydError7[61] =
 164 {
 165     -53760, -51968, -50176, -48384, -46592, -44800,
 166     -43008, -41216, -39424, -37632, -35840, -34048,
 167     -32256, -30464, -28672, -26880, -25088, -23296,
 168     -21504, -19712, -17920, -16128, -14336, -12544,
 169     -10752, -8960, -7168, -5376, -3584, -1792,  0,
 170     1792, 3584, 5376, 7168, 8960, 10752, 12544, 14336,
 171     16128, 17920, 19712, 21504, 23296, 25088, 26880,
 172     28672, 30464, 32256, 34048, 35840, 37632, 39424,
 173     41216, 43008, 44800, 46592, 48384, 50176, 51968,
 174     53760
 175 };
 176
 177 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */