| 1 |
astrand |
963 |
/* -*- c-basic-offset: 8 -*- |
| 2 |
matty |
3 |
rdesktop: A Remote Desktop Protocol client. |
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Bitmap decompression routines |
| 4 |
jsorg71 |
1365 |
Copyright (C) Matthew Chapman 1999-2007 |
| 5 |
jsorg71 |
309 |
|
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matty |
3 |
This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
| 10 |
jsorg71 |
309 |
|
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matty |
3 |
This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
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GNU General Public License for more details. |
| 15 |
jsorg71 |
309 |
|
| 16 |
matty |
3 |
You should have received a copy of the GNU General Public License |
| 17 |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 |
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*/ |
| 20 |
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| 21 |
jsorg71 |
1371 |
/* three seperate function for speed when decompressing the bitmaps |
| 22 |
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when modifing one function make the change in the others |
| 23 |
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jay.sorg@gmail.com */ |
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jsorg71 |
649 |
|
| 25 |
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/* indent is confused by this file */ |
| 26 |
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/* *INDENT-OFF* */ |
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matty |
10 |
#include "rdesktop.h" |
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matty |
3 |
|
| 30 |
matty |
7 |
#define CVAL(p) (*(p++)) |
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stargo |
693 |
#ifdef NEED_ALIGN |
| 32 |
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#ifdef L_ENDIAN |
| 33 |
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#define CVAL2(p, v) { v = (*(p++)); v |= (*(p++)) << 8; } |
| 34 |
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#else |
| 35 |
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#define CVAL2(p, v) { v = (*(p++)) << 8; v |= (*(p++)); } |
| 36 |
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#endif /* L_ENDIAN */ |
| 37 |
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#else |
| 38 |
stargo |
695 |
#define CVAL2(p, v) { v = (*((uint16*)p)); p += 2; } |
| 39 |
stargo |
693 |
#endif /* NEED_ALIGN */ |
| 40 |
matty |
3 |
|
| 41 |
jsorg71 |
649 |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
| 42 |
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| 43 |
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#define REPEAT(statement) \ |
| 44 |
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{ \ |
| 45 |
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while((count & ~0x7) && ((x+8) < width)) \ |
| 46 |
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UNROLL8( statement; count--; x++; ); \ |
| 47 |
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\ |
| 48 |
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while((count > 0) && (x < width)) \ |
| 49 |
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{ \ |
| 50 |
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statement; \ |
| 51 |
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count--; \ |
| 52 |
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x++; \ |
| 53 |
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} \ |
| 54 |
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} |
| 55 |
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| 56 |
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#define MASK_UPDATE() \ |
| 57 |
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{ \ |
| 58 |
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mixmask <<= 1; \ |
| 59 |
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if (mixmask == 0) \ |
| 60 |
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{ \ |
| 61 |
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mask = fom_mask ? fom_mask : CVAL(input); \ |
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mixmask = 1; \ |
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} \ |
| 64 |
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} |
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/* 1 byte bitmap decompress */ |
| 67 |
jsorg71 |
1372 |
static RD_BOOL |
| 68 |
jsorg71 |
649 |
bitmap_decompress1(uint8 * output, int width, int height, uint8 * input, int size) |
| 69 |
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{ |
| 70 |
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uint8 *end = input + size; |
| 71 |
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uint8 *prevline = NULL, *line = NULL; |
| 72 |
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int opcode, count, offset, isfillormix, x = width; |
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int lastopcode = -1, insertmix = False, bicolour = False; |
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uint8 code; |
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uint8 colour1 = 0, colour2 = 0; |
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uint8 mixmask, mask = 0; |
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uint8 mix = 0xff; |
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int fom_mask = 0; |
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while (input < end) |
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{ |
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fom_mask = 0; |
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code = CVAL(input); |
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opcode = code >> 4; |
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/* Handle different opcode forms */ |
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switch (opcode) |
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{ |
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case 0xc: |
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case 0xd: |
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case 0xe: |
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opcode -= 6; |
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count = code & 0xf; |
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offset = 16; |
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break; |
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case 0xf: |
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opcode = code & 0xf; |
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if (opcode < 9) |
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{ |
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count = CVAL(input); |
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count |= CVAL(input) << 8; |
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} |
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else |
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{ |
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count = (opcode < 0xb) ? 8 : 1; |
| 105 |
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} |
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offset = 0; |
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break; |
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default: |
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opcode >>= 1; |
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count = code & 0x1f; |
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offset = 32; |
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break; |
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} |
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/* Handle strange cases for counts */ |
| 115 |
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if (offset != 0) |
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{ |
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isfillormix = ((opcode == 2) || (opcode == 7)); |
| 118 |
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if (count == 0) |
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{ |
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if (isfillormix) |
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count = CVAL(input) + 1; |
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else |
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count = CVAL(input) + offset; |
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} |
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else if (isfillormix) |
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{ |
| 127 |
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count <<= 3; |
| 128 |
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} |
| 129 |
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} |
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/* Read preliminary data */ |
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switch (opcode) |
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{ |
| 133 |
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case 0: /* Fill */ |
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if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
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insertmix = True; |
| 136 |
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break; |
| 137 |
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case 8: /* Bicolour */ |
| 138 |
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colour1 = CVAL(input); |
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case 3: /* Colour */ |
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colour2 = CVAL(input); |
| 141 |
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break; |
| 142 |
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case 6: /* SetMix/Mix */ |
| 143 |
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case 7: /* SetMix/FillOrMix */ |
| 144 |
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mix = CVAL(input); |
| 145 |
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opcode -= 5; |
| 146 |
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break; |
| 147 |
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case 9: /* FillOrMix_1 */ |
| 148 |
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mask = 0x03; |
| 149 |
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opcode = 0x02; |
| 150 |
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fom_mask = 3; |
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break; |
| 152 |
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case 0x0a: /* FillOrMix_2 */ |
| 153 |
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mask = 0x05; |
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opcode = 0x02; |
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fom_mask = 5; |
| 156 |
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break; |
| 157 |
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} |
| 158 |
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lastopcode = opcode; |
| 159 |
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mixmask = 0; |
| 160 |
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/* Output body */ |
| 161 |
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while (count > 0) |
| 162 |
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{ |
| 163 |
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if (x >= width) |
| 164 |
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{ |
| 165 |
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if (height <= 0) |
| 166 |
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return False; |
| 167 |
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x = 0; |
| 168 |
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height--; |
| 169 |
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prevline = line; |
| 170 |
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line = output + height * width; |
| 171 |
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} |
| 172 |
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switch (opcode) |
| 173 |
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{ |
| 174 |
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case 0: /* Fill */ |
| 175 |
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if (insertmix) |
| 176 |
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{ |
| 177 |
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if (prevline == NULL) |
| 178 |
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line[x] = mix; |
| 179 |
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else |
| 180 |
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line[x] = prevline[x] ^ mix; |
| 181 |
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insertmix = False; |
| 182 |
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count--; |
| 183 |
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x++; |
| 184 |
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} |
| 185 |
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if (prevline == NULL) |
| 186 |
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{ |
| 187 |
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REPEAT(line[x] = 0) |
| 188 |
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} |
| 189 |
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else |
| 190 |
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{ |
| 191 |
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REPEAT(line[x] = prevline[x]) |
| 192 |
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} |
| 193 |
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break; |
| 194 |
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case 1: /* Mix */ |
| 195 |
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if (prevline == NULL) |
| 196 |
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{ |
| 197 |
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REPEAT(line[x] = mix) |
| 198 |
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} |
| 199 |
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else |
| 200 |
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{ |
| 201 |
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REPEAT(line[x] = prevline[x] ^ mix) |
| 202 |
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} |
| 203 |
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break; |
| 204 |
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case 2: /* Fill or Mix */ |
| 205 |
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if (prevline == NULL) |
| 206 |
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{ |
| 207 |
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REPEAT |
| 208 |
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( |
| 209 |
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MASK_UPDATE(); |
| 210 |
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if (mask & mixmask) |
| 211 |
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line[x] = mix; |
| 212 |
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else |
| 213 |
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line[x] = 0; |
| 214 |
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) |
| 215 |
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} |
| 216 |
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else |
| 217 |
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{ |
| 218 |
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REPEAT |
| 219 |
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( |
| 220 |
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MASK_UPDATE(); |
| 221 |
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if (mask & mixmask) |
| 222 |
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line[x] = prevline[x] ^ mix; |
| 223 |
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else |
| 224 |
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line[x] = prevline[x]; |
| 225 |
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) |
| 226 |
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} |
| 227 |
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break; |
| 228 |
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case 3: /* Colour */ |
| 229 |
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REPEAT(line[x] = colour2) |
| 230 |
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break; |
| 231 |
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case 4: /* Copy */ |
| 232 |
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REPEAT(line[x] = CVAL(input)) |
| 233 |
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break; |
| 234 |
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case 8: /* Bicolour */ |
| 235 |
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REPEAT |
| 236 |
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( |
| 237 |
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if (bicolour) |
| 238 |
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{ |
| 239 |
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line[x] = colour2; |
| 240 |
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bicolour = False; |
| 241 |
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} |
| 242 |
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else |
| 243 |
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{ |
| 244 |
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line[x] = colour1; |
| 245 |
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bicolour = True; count++; |
| 246 |
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} |
| 247 |
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) |
| 248 |
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break; |
| 249 |
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case 0xd: /* White */ |
| 250 |
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REPEAT(line[x] = 0xff) |
| 251 |
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break; |
| 252 |
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case 0xe: /* Black */ |
| 253 |
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REPEAT(line[x] = 0) |
| 254 |
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break; |
| 255 |
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default: |
| 256 |
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unimpl("bitmap opcode 0x%x\n", opcode); |
| 257 |
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return False; |
| 258 |
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} |
| 259 |
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} |
| 260 |
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} |
| 261 |
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return True; |
| 262 |
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} |
| 263 |
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|
| 264 |
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/* 2 byte bitmap decompress */ |
| 265 |
jsorg71 |
1372 |
static RD_BOOL |
| 266 |
jsorg71 |
649 |
bitmap_decompress2(uint8 * output, int width, int height, uint8 * input, int size) |
| 267 |
|
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{ |
| 268 |
|
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uint8 *end = input + size; |
| 269 |
|
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uint16 *prevline = NULL, *line = NULL; |
| 270 |
|
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int opcode, count, offset, isfillormix, x = width; |
| 271 |
|
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int lastopcode = -1, insertmix = False, bicolour = False; |
| 272 |
|
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uint8 code; |
| 273 |
|
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uint16 colour1 = 0, colour2 = 0; |
| 274 |
|
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uint8 mixmask, mask = 0; |
| 275 |
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uint16 mix = 0xffff; |
| 276 |
|
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int fom_mask = 0; |
| 277 |
|
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|
| 278 |
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while (input < end) |
| 279 |
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{ |
| 280 |
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fom_mask = 0; |
| 281 |
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code = CVAL(input); |
| 282 |
|
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opcode = code >> 4; |
| 283 |
|
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/* Handle different opcode forms */ |
| 284 |
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switch (opcode) |
| 285 |
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{ |
| 286 |
|
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case 0xc: |
| 287 |
|
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case 0xd: |
| 288 |
|
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case 0xe: |
| 289 |
|
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opcode -= 6; |
| 290 |
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count = code & 0xf; |
| 291 |
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offset = 16; |
| 292 |
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break; |
| 293 |
|
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case 0xf: |
| 294 |
|
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opcode = code & 0xf; |
| 295 |
|
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if (opcode < 9) |
| 296 |
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{ |
| 297 |
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count = CVAL(input); |
| 298 |
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count |= CVAL(input) << 8; |
| 299 |
|
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} |
| 300 |
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else |
| 301 |
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{ |
| 302 |
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count = (opcode < 0xb) ? 8 : 1; |
| 303 |
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} |
| 304 |
|
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offset = 0; |
| 305 |
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break; |
| 306 |
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default: |
| 307 |
|
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opcode >>= 1; |
| 308 |
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count = code & 0x1f; |
| 309 |
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offset = 32; |
| 310 |
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break; |
| 311 |
|
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} |
| 312 |
|
|
/* Handle strange cases for counts */ |
| 313 |
|
|
if (offset != 0) |
| 314 |
|
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{ |
| 315 |
|
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isfillormix = ((opcode == 2) || (opcode == 7)); |
| 316 |
|
|
if (count == 0) |
| 317 |
|
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{ |
| 318 |
|
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if (isfillormix) |
| 319 |
|
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count = CVAL(input) + 1; |
| 320 |
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else |
| 321 |
|
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count = CVAL(input) + offset; |
| 322 |
|
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} |
| 323 |
|
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else if (isfillormix) |
| 324 |
|
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{ |
| 325 |
|
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count <<= 3; |
| 326 |
|
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} |
| 327 |
|
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} |
| 328 |
|
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/* Read preliminary data */ |
| 329 |
|
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switch (opcode) |
| 330 |
|
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{ |
| 331 |
|
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case 0: /* Fill */ |
| 332 |
|
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if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
| 333 |
|
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insertmix = True; |
| 334 |
|
|
break; |
| 335 |
|
|
case 8: /* Bicolour */ |
| 336 |
stargo |
693 |
CVAL2(input, colour1); |
| 337 |
jsorg71 |
649 |
case 3: /* Colour */ |
| 338 |
stargo |
693 |
CVAL2(input, colour2); |
| 339 |
jsorg71 |
649 |
break; |
| 340 |
|
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case 6: /* SetMix/Mix */ |
| 341 |
|
|
case 7: /* SetMix/FillOrMix */ |
| 342 |
stargo |
693 |
CVAL2(input, mix); |
| 343 |
jsorg71 |
649 |
opcode -= 5; |
| 344 |
|
|
break; |
| 345 |
|
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case 9: /* FillOrMix_1 */ |
| 346 |
|
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mask = 0x03; |
| 347 |
|
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opcode = 0x02; |
| 348 |
|
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fom_mask = 3; |
| 349 |
|
|
break; |
| 350 |
|
|
case 0x0a: /* FillOrMix_2 */ |
| 351 |
|
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mask = 0x05; |
| 352 |
|
|
opcode = 0x02; |
| 353 |
|
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fom_mask = 5; |
| 354 |
|
|
break; |
| 355 |
|
|
} |
| 356 |
|
|
lastopcode = opcode; |
| 357 |
|
|
mixmask = 0; |
| 358 |
|
|
/* Output body */ |
| 359 |
|
|
while (count > 0) |
| 360 |
|
|
{ |
| 361 |
|
|
if (x >= width) |
| 362 |
|
|
{ |
| 363 |
|
|
if (height <= 0) |
| 364 |
|
|
return False; |
| 365 |
|
|
x = 0; |
| 366 |
|
|
height--; |
| 367 |
|
|
prevline = line; |
| 368 |
|
|
line = ((uint16 *) output) + height * width; |
| 369 |
|
|
} |
| 370 |
|
|
switch (opcode) |
| 371 |
|
|
{ |
| 372 |
|
|
case 0: /* Fill */ |
| 373 |
|
|
if (insertmix) |
| 374 |
|
|
{ |
| 375 |
|
|
if (prevline == NULL) |
| 376 |
|
|
line[x] = mix; |
| 377 |
|
|
else |
| 378 |
|
|
line[x] = prevline[x] ^ mix; |
| 379 |
|
|
insertmix = False; |
| 380 |
|
|
count--; |
| 381 |
|
|
x++; |
| 382 |
|
|
} |
| 383 |
|
|
if (prevline == NULL) |
| 384 |
|
|
{ |
| 385 |
|
|
REPEAT(line[x] = 0) |
| 386 |
|
|
} |
| 387 |
|
|
else |
| 388 |
|
|
{ |
| 389 |
|
|
REPEAT(line[x] = prevline[x]) |
| 390 |
|
|
} |
| 391 |
|
|
break; |
| 392 |
|
|
case 1: /* Mix */ |
| 393 |
|
|
if (prevline == NULL) |
| 394 |
|
|
{ |
| 395 |
|
|
REPEAT(line[x] = mix) |
| 396 |
|
|
} |
| 397 |
|
|
else |
| 398 |
|
|
{ |
| 399 |
|
|
REPEAT(line[x] = prevline[x] ^ mix) |
| 400 |
|
|
} |
| 401 |
|
|
break; |
| 402 |
|
|
case 2: /* Fill or Mix */ |
| 403 |
|
|
if (prevline == NULL) |
| 404 |
|
|
{ |
| 405 |
|
|
REPEAT |
| 406 |
|
|
( |
| 407 |
|
|
MASK_UPDATE(); |
| 408 |
|
|
if (mask & mixmask) |
| 409 |
|
|
line[x] = mix; |
| 410 |
|
|
else |
| 411 |
|
|
line[x] = 0; |
| 412 |
|
|
) |
| 413 |
|
|
} |
| 414 |
|
|
else |
| 415 |
|
|
{ |
| 416 |
|
|
REPEAT |
| 417 |
|
|
( |
| 418 |
|
|
MASK_UPDATE(); |
| 419 |
|
|
if (mask & mixmask) |
| 420 |
|
|
line[x] = prevline[x] ^ mix; |
| 421 |
|
|
else |
| 422 |
|
|
line[x] = prevline[x]; |
| 423 |
|
|
) |
| 424 |
|
|
} |
| 425 |
|
|
break; |
| 426 |
|
|
case 3: /* Colour */ |
| 427 |
|
|
REPEAT(line[x] = colour2) |
| 428 |
|
|
break; |
| 429 |
|
|
case 4: /* Copy */ |
| 430 |
stargo |
693 |
REPEAT(CVAL2(input, line[x])) |
| 431 |
jsorg71 |
649 |
break; |
| 432 |
|
|
case 8: /* Bicolour */ |
| 433 |
|
|
REPEAT |
| 434 |
|
|
( |
| 435 |
|
|
if (bicolour) |
| 436 |
|
|
{ |
| 437 |
|
|
line[x] = colour2; |
| 438 |
|
|
bicolour = False; |
| 439 |
|
|
} |
| 440 |
|
|
else |
| 441 |
|
|
{ |
| 442 |
|
|
line[x] = colour1; |
| 443 |
|
|
bicolour = True; |
| 444 |
|
|
count++; |
| 445 |
|
|
} |
| 446 |
|
|
) |
| 447 |
|
|
break; |
| 448 |
|
|
case 0xd: /* White */ |
| 449 |
|
|
REPEAT(line[x] = 0xffff) |
| 450 |
|
|
break; |
| 451 |
|
|
case 0xe: /* Black */ |
| 452 |
|
|
REPEAT(line[x] = 0) |
| 453 |
|
|
break; |
| 454 |
|
|
default: |
| 455 |
|
|
unimpl("bitmap opcode 0x%x\n", opcode); |
| 456 |
|
|
return False; |
| 457 |
|
|
} |
| 458 |
|
|
} |
| 459 |
|
|
} |
| 460 |
|
|
return True; |
| 461 |
|
|
} |
| 462 |
|
|
|
| 463 |
|
|
/* 3 byte bitmap decompress */ |
| 464 |
jsorg71 |
1372 |
static RD_BOOL |
| 465 |
jsorg71 |
649 |
bitmap_decompress3(uint8 * output, int width, int height, uint8 * input, int size) |
| 466 |
|
|
{ |
| 467 |
|
|
uint8 *end = input + size; |
| 468 |
|
|
uint8 *prevline = NULL, *line = NULL; |
| 469 |
|
|
int opcode, count, offset, isfillormix, x = width; |
| 470 |
|
|
int lastopcode = -1, insertmix = False, bicolour = False; |
| 471 |
|
|
uint8 code; |
| 472 |
|
|
uint8 colour1[3] = {0, 0, 0}, colour2[3] = {0, 0, 0}; |
| 473 |
|
|
uint8 mixmask, mask = 0; |
| 474 |
|
|
uint8 mix[3] = {0xff, 0xff, 0xff}; |
| 475 |
|
|
int fom_mask = 0; |
| 476 |
|
|
|
| 477 |
|
|
while (input < end) |
| 478 |
|
|
{ |
| 479 |
|
|
fom_mask = 0; |
| 480 |
|
|
code = CVAL(input); |
| 481 |
|
|
opcode = code >> 4; |
| 482 |
|
|
/* Handle different opcode forms */ |
| 483 |
|
|
switch (opcode) |
| 484 |
|
|
{ |
| 485 |
|
|
case 0xc: |
| 486 |
|
|
case 0xd: |
| 487 |
|
|
case 0xe: |
| 488 |
|
|
opcode -= 6; |
| 489 |
|
|
count = code & 0xf; |
| 490 |
|
|
offset = 16; |
| 491 |
|
|
break; |
| 492 |
|
|
case 0xf: |
| 493 |
|
|
opcode = code & 0xf; |
| 494 |
|
|
if (opcode < 9) |
| 495 |
|
|
{ |
| 496 |
|
|
count = CVAL(input); |
| 497 |
|
|
count |= CVAL(input) << 8; |
| 498 |
|
|
} |
| 499 |
|
|
else |
| 500 |
|
|
{ |
| 501 |
|
|
count = (opcode < |
| 502 |
|
|
0xb) ? 8 : 1; |
| 503 |
|
|
} |
| 504 |
|
|
offset = 0; |
| 505 |
|
|
break; |
| 506 |
|
|
default: |
| 507 |
|
|
opcode >>= 1; |
| 508 |
|
|
count = code & 0x1f; |
| 509 |
|
|
offset = 32; |
| 510 |
|
|
break; |
| 511 |
|
|
} |
| 512 |
|
|
/* Handle strange cases for counts */ |
| 513 |
|
|
if (offset != 0) |
| 514 |
|
|
{ |
| 515 |
|
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
| 516 |
|
|
if (count == 0) |
| 517 |
|
|
{ |
| 518 |
|
|
if (isfillormix) |
| 519 |
|
|
count = CVAL(input) + 1; |
| 520 |
|
|
else |
| 521 |
|
|
count = CVAL(input) + offset; |
| 522 |
|
|
} |
| 523 |
|
|
else if (isfillormix) |
| 524 |
|
|
{ |
| 525 |
|
|
count <<= 3; |
| 526 |
|
|
} |
| 527 |
|
|
} |
| 528 |
|
|
/* Read preliminary data */ |
| 529 |
|
|
switch (opcode) |
| 530 |
|
|
{ |
| 531 |
|
|
case 0: /* Fill */ |
| 532 |
|
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
| 533 |
|
|
insertmix = True; |
| 534 |
|
|
break; |
| 535 |
|
|
case 8: /* Bicolour */ |
| 536 |
|
|
colour1[0] = CVAL(input); |
| 537 |
|
|
colour1[1] = CVAL(input); |
| 538 |
|
|
colour1[2] = CVAL(input); |
| 539 |
|
|
case 3: /* Colour */ |
| 540 |
|
|
colour2[0] = CVAL(input); |
| 541 |
|
|
colour2[1] = CVAL(input); |
| 542 |
|
|
colour2[2] = CVAL(input); |
| 543 |
|
|
break; |
| 544 |
|
|
case 6: /* SetMix/Mix */ |
| 545 |
|
|
case 7: /* SetMix/FillOrMix */ |
| 546 |
|
|
mix[0] = CVAL(input); |
| 547 |
|
|
mix[1] = CVAL(input); |
| 548 |
|
|
mix[2] = CVAL(input); |
| 549 |
|
|
opcode -= 5; |
| 550 |
|
|
break; |
| 551 |
|
|
case 9: /* FillOrMix_1 */ |
| 552 |
|
|
mask = 0x03; |
| 553 |
|
|
opcode = 0x02; |
| 554 |
|
|
fom_mask = 3; |
| 555 |
|
|
break; |
| 556 |
|
|
case 0x0a: /* FillOrMix_2 */ |
| 557 |
|
|
mask = 0x05; |
| 558 |
|
|
opcode = 0x02; |
| 559 |
|
|
fom_mask = 5; |
| 560 |
|
|
break; |
| 561 |
|
|
} |
| 562 |
|
|
lastopcode = opcode; |
| 563 |
|
|
mixmask = 0; |
| 564 |
|
|
/* Output body */ |
| 565 |
|
|
while (count > 0) |
| 566 |
|
|
{ |
| 567 |
|
|
if (x >= width) |
| 568 |
|
|
{ |
| 569 |
|
|
if (height <= 0) |
| 570 |
|
|
return False; |
| 571 |
|
|
x = 0; |
| 572 |
|
|
height--; |
| 573 |
|
|
prevline = line; |
| 574 |
|
|
line = output + height * (width * 3); |
| 575 |
|
|
} |
| 576 |
|
|
switch (opcode) |
| 577 |
|
|
{ |
| 578 |
|
|
case 0: /* Fill */ |
| 579 |
|
|
if (insertmix) |
| 580 |
|
|
{ |
| 581 |
|
|
if (prevline == NULL) |
| 582 |
|
|
{ |
| 583 |
|
|
line[x * 3] = mix[0]; |
| 584 |
|
|
line[x * 3 + 1] = mix[1]; |
| 585 |
|
|
line[x * 3 + 2] = mix[2]; |
| 586 |
|
|
} |
| 587 |
|
|
else |
| 588 |
|
|
{ |
| 589 |
|
|
line[x * 3] = |
| 590 |
|
|
prevline[x * 3] ^ mix[0]; |
| 591 |
|
|
line[x * 3 + 1] = |
| 592 |
|
|
prevline[x * 3 + 1] ^ mix[1]; |
| 593 |
|
|
line[x * 3 + 2] = |
| 594 |
|
|
prevline[x * 3 + 2] ^ mix[2]; |
| 595 |
|
|
} |
| 596 |
|
|
insertmix = False; |
| 597 |
|
|
count--; |
| 598 |
|
|
x++; |
| 599 |
|
|
} |
| 600 |
|
|
if (prevline == NULL) |
| 601 |
|
|
{ |
| 602 |
|
|
REPEAT |
| 603 |
|
|
( |
| 604 |
|
|
line[x * 3] = 0; |
| 605 |
|
|
line[x * 3 + 1] = 0; |
| 606 |
|
|
line[x * 3 + 2] = 0; |
| 607 |
|
|
) |
| 608 |
|
|
} |
| 609 |
|
|
else |
| 610 |
|
|
{ |
| 611 |
|
|
REPEAT |
| 612 |
|
|
( |
| 613 |
|
|
line[x * 3] = prevline[x * 3]; |
| 614 |
|
|
line[x * 3 + 1] = prevline[x * 3 + 1]; |
| 615 |
|
|
line[x * 3 + 2] = prevline[x * 3 + 2]; |
| 616 |
|
|
) |
| 617 |
|
|
} |
| 618 |
|
|
break; |
| 619 |
|
|
case 1: /* Mix */ |
| 620 |
|
|
if (prevline == NULL) |
| 621 |
|
|
{ |
| 622 |
|
|
REPEAT |
| 623 |
|
|
( |
| 624 |
|
|
line[x * 3] = mix[0]; |
| 625 |
|
|
line[x * 3 + 1] = mix[1]; |
| 626 |
|
|
line[x * 3 + 2] = mix[2]; |
| 627 |
|
|
) |
| 628 |
|
|
} |
| 629 |
|
|
else |
| 630 |
|
|
{ |
| 631 |
|
|
REPEAT |
| 632 |
|
|
( |
| 633 |
|
|
line[x * 3] = |
| 634 |
|
|
prevline[x * 3] ^ mix[0]; |
| 635 |
|
|
line[x * 3 + 1] = |
| 636 |
|
|
prevline[x * 3 + 1] ^ mix[1]; |
| 637 |
|
|
line[x * 3 + 2] = |
| 638 |
|
|
prevline[x * 3 + 2] ^ mix[2]; |
| 639 |
|
|
) |
| 640 |
|
|
} |
| 641 |
|
|
break; |
| 642 |
|
|
case 2: /* Fill or Mix */ |
| 643 |
|
|
if (prevline == NULL) |
| 644 |
|
|
{ |
| 645 |
|
|
REPEAT |
| 646 |
|
|
( |
| 647 |
|
|
MASK_UPDATE(); |
| 648 |
|
|
if (mask & mixmask) |
| 649 |
|
|
{ |
| 650 |
|
|
line[x * 3] = mix[0]; |
| 651 |
|
|
line[x * 3 + 1] = mix[1]; |
| 652 |
|
|
line[x * 3 + 2] = mix[2]; |
| 653 |
|
|
} |
| 654 |
|
|
else |
| 655 |
|
|
{ |
| 656 |
|
|
line[x * 3] = 0; |
| 657 |
|
|
line[x * 3 + 1] = 0; |
| 658 |
|
|
line[x * 3 + 2] = 0; |
| 659 |
|
|
} |
| 660 |
|
|
) |
| 661 |
|
|
} |
| 662 |
|
|
else |
| 663 |
|
|
{ |
| 664 |
|
|
REPEAT |
| 665 |
|
|
( |
| 666 |
|
|
MASK_UPDATE(); |
| 667 |
|
|
if (mask & mixmask) |
| 668 |
|
|
{ |
| 669 |
|
|
line[x * 3] = |
| 670 |
|
|
prevline[x * 3] ^ mix [0]; |
| 671 |
|
|
line[x * 3 + 1] = |
| 672 |
|
|
prevline[x * 3 + 1] ^ mix [1]; |
| 673 |
|
|
line[x * 3 + 2] = |
| 674 |
|
|
prevline[x * 3 + 2] ^ mix [2]; |
| 675 |
|
|
} |
| 676 |
|
|
else |
| 677 |
|
|
{ |
| 678 |
|
|
line[x * 3] = |
| 679 |
|
|
prevline[x * 3]; |
| 680 |
|
|
line[x * 3 + 1] = |
| 681 |
|
|
prevline[x * 3 + 1]; |
| 682 |
|
|
line[x * 3 + 2] = |
| 683 |
|
|
prevline[x * 3 + 2]; |
| 684 |
|
|
} |
| 685 |
|
|
) |
| 686 |
|
|
} |
| 687 |
|
|
break; |
| 688 |
|
|
case 3: /* Colour */ |
| 689 |
|
|
REPEAT |
| 690 |
|
|
( |
| 691 |
|
|
line[x * 3] = colour2 [0]; |
| 692 |
|
|
line[x * 3 + 1] = colour2 [1]; |
| 693 |
|
|
line[x * 3 + 2] = colour2 [2]; |
| 694 |
|
|
) |
| 695 |
|
|
break; |
| 696 |
|
|
case 4: /* Copy */ |
| 697 |
|
|
REPEAT |
| 698 |
|
|
( |
| 699 |
|
|
line[x * 3] = CVAL(input); |
| 700 |
|
|
line[x * 3 + 1] = CVAL(input); |
| 701 |
|
|
line[x * 3 + 2] = CVAL(input); |
| 702 |
|
|
) |
| 703 |
|
|
break; |
| 704 |
|
|
case 8: /* Bicolour */ |
| 705 |
|
|
REPEAT |
| 706 |
|
|
( |
| 707 |
|
|
if (bicolour) |
| 708 |
|
|
{ |
| 709 |
|
|
line[x * 3] = colour2[0]; |
| 710 |
|
|
line[x * 3 + 1] = colour2[1]; |
| 711 |
|
|
line[x * 3 + 2] = colour2[2]; |
| 712 |
|
|
bicolour = False; |
| 713 |
|
|
} |
| 714 |
|
|
else |
| 715 |
|
|
{ |
| 716 |
|
|
line[x * 3] = colour1[0]; |
| 717 |
|
|
line[x * 3 + 1] = colour1[1]; |
| 718 |
|
|
line[x * 3 + 2] = colour1[2]; |
| 719 |
|
|
bicolour = True; |
| 720 |
|
|
count++; |
| 721 |
|
|
} |
| 722 |
|
|
) |
| 723 |
|
|
break; |
| 724 |
|
|
case 0xd: /* White */ |
| 725 |
|
|
REPEAT |
| 726 |
|
|
( |
| 727 |
|
|
line[x * 3] = 0xff; |
| 728 |
|
|
line[x * 3 + 1] = 0xff; |
| 729 |
|
|
line[x * 3 + 2] = 0xff; |
| 730 |
|
|
) |
| 731 |
|
|
break; |
| 732 |
|
|
case 0xe: /* Black */ |
| 733 |
|
|
REPEAT |
| 734 |
|
|
( |
| 735 |
|
|
line[x * 3] = 0; |
| 736 |
|
|
line[x * 3 + 1] = 0; |
| 737 |
|
|
line[x * 3 + 2] = 0; |
| 738 |
|
|
) |
| 739 |
|
|
break; |
| 740 |
|
|
default: |
| 741 |
|
|
unimpl("bitmap opcode 0x%x\n", opcode); |
| 742 |
|
|
return False; |
| 743 |
|
|
} |
| 744 |
|
|
} |
| 745 |
|
|
} |
| 746 |
|
|
return True; |
| 747 |
|
|
} |
| 748 |
|
|
|
| 749 |
jsorg71 |
1417 |
/* decompress a colour plane */ |
| 750 |
|
|
static int |
| 751 |
|
|
process_plane(uint8 * in, int width, int height, uint8 * out, int size) |
| 752 |
|
|
{ |
| 753 |
|
|
int indexw; |
| 754 |
|
|
int indexh; |
| 755 |
|
|
int code; |
| 756 |
|
|
int collen; |
| 757 |
|
|
int replen; |
| 758 |
|
|
int color; |
| 759 |
|
|
int x; |
| 760 |
|
|
int revcode; |
| 761 |
|
|
uint8 * last_line; |
| 762 |
|
|
uint8 * this_line; |
| 763 |
|
|
uint8 * org_in; |
| 764 |
|
|
uint8 * org_out; |
| 765 |
|
|
|
| 766 |
|
|
org_in = in; |
| 767 |
|
|
org_out = out; |
| 768 |
|
|
last_line = 0; |
| 769 |
|
|
indexh = 0; |
| 770 |
|
|
while (indexh < height) |
| 771 |
|
|
{ |
| 772 |
|
|
out = (org_out + width * height * 4) - ((indexh + 1) * width * 4); |
| 773 |
|
|
color = 0; |
| 774 |
|
|
this_line = out; |
| 775 |
|
|
indexw = 0; |
| 776 |
|
|
if (last_line == 0) |
| 777 |
|
|
{ |
| 778 |
|
|
while (indexw < width) |
| 779 |
|
|
{ |
| 780 |
|
|
code = CVAL(in); |
| 781 |
|
|
replen = code & 0xf; |
| 782 |
|
|
collen = (code >> 4) & 0xf; |
| 783 |
|
|
revcode = (replen << 4) | collen; |
| 784 |
|
|
if ((revcode <= 47) && (revcode >= 16)) |
| 785 |
|
|
{ |
| 786 |
|
|
replen = revcode; |
| 787 |
|
|
collen = 0; |
| 788 |
|
|
} |
| 789 |
|
|
while (collen > 0) |
| 790 |
|
|
{ |
| 791 |
|
|
color = CVAL(in); |
| 792 |
|
|
*out = color; |
| 793 |
|
|
out += 4; |
| 794 |
|
|
indexw++; |
| 795 |
|
|
collen--; |
| 796 |
|
|
} |
| 797 |
|
|
while (replen > 0) |
| 798 |
|
|
{ |
| 799 |
|
|
*out = color; |
| 800 |
|
|
out += 4; |
| 801 |
|
|
indexw++; |
| 802 |
|
|
replen--; |
| 803 |
|
|
} |
| 804 |
|
|
} |
| 805 |
|
|
} |
| 806 |
|
|
else |
| 807 |
|
|
{ |
| 808 |
|
|
while (indexw < width) |
| 809 |
|
|
{ |
| 810 |
|
|
code = CVAL(in); |
| 811 |
|
|
replen = code & 0xf; |
| 812 |
|
|
collen = (code >> 4) & 0xf; |
| 813 |
|
|
revcode = (replen << 4) | collen; |
| 814 |
|
|
if ((revcode <= 47) && (revcode >= 16)) |
| 815 |
|
|
{ |
| 816 |
|
|
replen = revcode; |
| 817 |
|
|
collen = 0; |
| 818 |
|
|
} |
| 819 |
|
|
while (collen > 0) |
| 820 |
|
|
{ |
| 821 |
|
|
x = CVAL(in); |
| 822 |
|
|
if (x & 1) |
| 823 |
|
|
{ |
| 824 |
|
|
x = x >> 1; |
| 825 |
|
|
x = x + 1; |
| 826 |
|
|
color = -x; |
| 827 |
|
|
} |
| 828 |
|
|
else |
| 829 |
|
|
{ |
| 830 |
|
|
x = x >> 1; |
| 831 |
|
|
color = x; |
| 832 |
|
|
} |
| 833 |
|
|
x = last_line[indexw * 4] + color; |
| 834 |
|
|
*out = x; |
| 835 |
|
|
out += 4; |
| 836 |
|
|
indexw++; |
| 837 |
|
|
collen--; |
| 838 |
|
|
} |
| 839 |
|
|
while (replen > 0) |
| 840 |
|
|
{ |
| 841 |
|
|
x = last_line[indexw * 4] + color; |
| 842 |
|
|
*out = x; |
| 843 |
|
|
out += 4; |
| 844 |
|
|
indexw++; |
| 845 |
|
|
replen--; |
| 846 |
|
|
} |
| 847 |
|
|
} |
| 848 |
|
|
} |
| 849 |
|
|
indexh++; |
| 850 |
|
|
last_line = this_line; |
| 851 |
|
|
} |
| 852 |
|
|
return (int) (in - org_in); |
| 853 |
|
|
} |
| 854 |
|
|
|
| 855 |
|
|
/* 4 byte bitmap decompress */ |
| 856 |
|
|
static RD_BOOL |
| 857 |
|
|
bitmap_decompress4(uint8 * output, int width, int height, uint8 * input, int size) |
| 858 |
|
|
{ |
| 859 |
|
|
int code; |
| 860 |
|
|
int bytes_pro; |
| 861 |
|
|
int total_pro; |
| 862 |
|
|
|
| 863 |
|
|
code = CVAL(input); |
| 864 |
|
|
if (code != 0x10) |
| 865 |
|
|
{ |
| 866 |
|
|
return False; |
| 867 |
|
|
} |
| 868 |
|
|
total_pro = 1; |
| 869 |
|
|
bytes_pro = process_plane(input, width, height, output + 3, size - total_pro); |
| 870 |
|
|
total_pro += bytes_pro; |
| 871 |
|
|
input += bytes_pro; |
| 872 |
|
|
bytes_pro = process_plane(input, width, height, output + 2, size - total_pro); |
| 873 |
|
|
total_pro += bytes_pro; |
| 874 |
|
|
input += bytes_pro; |
| 875 |
|
|
bytes_pro = process_plane(input, width, height, output + 1, size - total_pro); |
| 876 |
|
|
total_pro += bytes_pro; |
| 877 |
|
|
input += bytes_pro; |
| 878 |
|
|
bytes_pro = process_plane(input, width, height, output + 0, size - total_pro); |
| 879 |
|
|
total_pro += bytes_pro; |
| 880 |
|
|
return size == total_pro; |
| 881 |
|
|
} |
| 882 |
|
|
|
| 883 |
jsorg71 |
649 |
/* main decompress function */ |
| 884 |
jsorg71 |
1372 |
RD_BOOL |
| 885 |
jsorg71 |
649 |
bitmap_decompress(uint8 * output, int width, int height, uint8 * input, int size, int Bpp) |
| 886 |
|
|
{ |
| 887 |
jsorg71 |
1372 |
RD_BOOL rv = False; |
| 888 |
jsorg71 |
1371 |
|
| 889 |
jsorg71 |
649 |
switch (Bpp) |
| 890 |
|
|
{ |
| 891 |
|
|
case 1: |
| 892 |
|
|
rv = bitmap_decompress1(output, width, height, input, size); |
| 893 |
|
|
break; |
| 894 |
|
|
case 2: |
| 895 |
|
|
rv = bitmap_decompress2(output, width, height, input, size); |
| 896 |
|
|
break; |
| 897 |
|
|
case 3: |
| 898 |
|
|
rv = bitmap_decompress3(output, width, height, input, size); |
| 899 |
|
|
break; |
| 900 |
jsorg71 |
1417 |
case 4: |
| 901 |
|
|
rv = bitmap_decompress4(output, width, height, input, size); |
| 902 |
|
|
break; |
| 903 |
|
|
default: |
| 904 |
|
|
unimpl("Bpp %d\n", Bpp); |
| 905 |
|
|
break; |
| 906 |
jsorg71 |
649 |
} |
| 907 |
|
|
return rv; |
| 908 |
|
|
} |
| 909 |
|
|
|
| 910 |
|
|
/* *INDENT-ON* */ |
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