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jsorg71 |
649 |
/* |
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matty |
3 |
rdesktop: A Remote Desktop Protocol client. |
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Bitmap decompression routines |
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matthewc |
207 |
Copyright (C) Matthew Chapman 1999-2002 |
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jsorg71 |
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|
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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. |
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jsorg71 |
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|
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matty |
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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 |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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jsorg71 |
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|
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matty |
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You should have received a copy of the GNU General Public License |
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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. |
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*/ |
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jsorg71 |
649 |
/* three seperate function for speed when decompressing the bitmaps */ |
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/* when modifing one function make the change in the others */ |
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/* comment out #define BITMAP_SPEED_OVER_SIZE below for one slower function */ |
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/* j@american-data.com */ |
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#define BITMAP_SPEED_OVER_SIZE |
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/* indent is confused by this file */ |
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/* *INDENT-OFF* */ |
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matty |
10 |
#include "rdesktop.h" |
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matty |
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|
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matty |
7 |
#define CVAL(p) (*(p++)) |
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jsorg71 |
649 |
#define CVAL2(p) (*(((uint16*)p)++)) /* for 16 bit */ |
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matty |
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|
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jsorg71 |
649 |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
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#define REPEAT(statement) \ |
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{ \ |
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while((count & ~0x7) && ((x+8) < width)) \ |
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UNROLL8( statement; count--; x++; ); \ |
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\ |
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while((count > 0) && (x < width)) \ |
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{ \ |
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statement; \ |
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count--; \ |
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x++; \ |
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} \ |
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} |
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#define MASK_UPDATE() \ |
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{ \ |
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mixmask <<= 1; \ |
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if (mixmask == 0) \ |
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{ \ |
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mask = fom_mask ? fom_mask : CVAL(input); \ |
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mixmask = 1; \ |
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} \ |
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} |
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#ifdef BITMAP_SPEED_OVER_SIZE |
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/* 1 byte bitmap decompress */ |
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static BOOL |
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bitmap_decompress1(uint8 * output, int width, int height, uint8 * input, int size) |
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{ |
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uint8 *end = input + size; |
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uint8 *prevline = NULL, *line = NULL; |
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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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|
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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; |
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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 */ |
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if (offset != 0) |
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{ |
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isfillormix = ((opcode == 2) || (opcode == 7)); |
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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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{ |
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count <<= 3; |
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} |
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} |
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/* Read preliminary data */ |
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switch (opcode) |
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{ |
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case 0: /* Fill */ |
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if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
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insertmix = True; |
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break; |
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case 8: /* Bicolour */ |
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colour1 = CVAL(input); |
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case 3: /* Colour */ |
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colour2 = CVAL(input); |
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break; |
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case 6: /* SetMix/Mix */ |
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case 7: /* SetMix/FillOrMix */ |
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mix = CVAL(input); |
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opcode -= 5; |
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break; |
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case 9: /* FillOrMix_1 */ |
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mask = 0x03; |
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opcode = 0x02; |
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fom_mask = 3; |
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break; |
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case 0x0a: /* FillOrMix_2 */ |
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mask = 0x05; |
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opcode = 0x02; |
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fom_mask = 5; |
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break; |
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} |
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lastopcode = opcode; |
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mixmask = 0; |
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/* Output body */ |
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while (count > 0) |
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{ |
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if (x >= width) |
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{ |
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if (height <= 0) |
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return False; |
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x = 0; |
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height--; |
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prevline = line; |
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line = output + height * width; |
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} |
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switch (opcode) |
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{ |
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case 0: /* Fill */ |
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if (insertmix) |
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{ |
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if (prevline == NULL) |
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line[x] = mix; |
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else |
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line[x] = prevline[x] ^ mix; |
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insertmix = False; |
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count--; |
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x++; |
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} |
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if (prevline == NULL) |
183 |
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{ |
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REPEAT(line[x] = 0) |
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} |
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else |
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{ |
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REPEAT(line[x] = prevline[x]) |
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} |
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break; |
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case 1: /* Mix */ |
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if (prevline == NULL) |
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{ |
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REPEAT(line[x] = mix) |
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} |
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else |
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{ |
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REPEAT(line[x] = prevline[x] ^ mix) |
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} |
200 |
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break; |
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case 2: /* Fill or Mix */ |
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if (prevline == NULL) |
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{ |
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REPEAT |
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( |
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MASK_UPDATE(); |
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if (mask & mixmask) |
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line[x] = mix; |
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else |
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line[x] = 0; |
211 |
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) |
212 |
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} |
213 |
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else |
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{ |
215 |
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REPEAT |
216 |
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( |
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MASK_UPDATE(); |
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if (mask & mixmask) |
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line[x] = prevline[x] ^ mix; |
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else |
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line[x] = prevline[x]; |
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) |
223 |
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} |
224 |
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break; |
225 |
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case 3: /* Colour */ |
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REPEAT(line[x] = colour2) |
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break; |
228 |
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case 4: /* Copy */ |
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REPEAT(line[x] = CVAL(input)) |
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break; |
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case 8: /* Bicolour */ |
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REPEAT |
233 |
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( |
234 |
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if (bicolour) |
235 |
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{ |
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line[x] = colour2; |
237 |
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bicolour = False; |
238 |
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} |
239 |
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else |
240 |
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{ |
241 |
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line[x] = colour1; |
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bicolour = True; count++; |
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} |
244 |
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) |
245 |
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break; |
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case 0xd: /* White */ |
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REPEAT(line[x] = 0xff) |
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break; |
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case 0xe: /* Black */ |
250 |
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REPEAT(line[x] = 0) |
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break; |
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default: |
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unimpl("bitmap opcode 0x%x\n", opcode); |
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return False; |
255 |
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} |
256 |
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} |
257 |
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} |
258 |
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return True; |
259 |
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} |
260 |
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261 |
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/* 2 byte bitmap decompress */ |
262 |
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static BOOL |
263 |
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bitmap_decompress2(uint8 * output, int width, int height, uint8 * input, int size) |
264 |
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{ |
265 |
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uint8 *end = input + size; |
266 |
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uint16 *prevline = NULL, *line = NULL; |
267 |
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int opcode, count, offset, isfillormix, x = width; |
268 |
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int lastopcode = -1, insertmix = False, bicolour = False; |
269 |
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uint8 code; |
270 |
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uint16 colour1 = 0, colour2 = 0; |
271 |
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uint8 mixmask, mask = 0; |
272 |
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uint16 mix = 0xffff; |
273 |
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int fom_mask = 0; |
274 |
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|
275 |
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while (input < end) |
276 |
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{ |
277 |
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fom_mask = 0; |
278 |
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code = CVAL(input); |
279 |
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opcode = code >> 4; |
280 |
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/* Handle different opcode forms */ |
281 |
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switch (opcode) |
282 |
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{ |
283 |
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case 0xc: |
284 |
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case 0xd: |
285 |
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case 0xe: |
286 |
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opcode -= 6; |
287 |
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count = code & 0xf; |
288 |
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offset = 16; |
289 |
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break; |
290 |
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case 0xf: |
291 |
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opcode = code & 0xf; |
292 |
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if (opcode < 9) |
293 |
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{ |
294 |
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count = CVAL(input); |
295 |
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count |= CVAL(input) << 8; |
296 |
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} |
297 |
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else |
298 |
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{ |
299 |
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count = (opcode < 0xb) ? 8 : 1; |
300 |
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} |
301 |
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offset = 0; |
302 |
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break; |
303 |
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default: |
304 |
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opcode >>= 1; |
305 |
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count = code & 0x1f; |
306 |
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offset = 32; |
307 |
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break; |
308 |
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} |
309 |
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/* Handle strange cases for counts */ |
310 |
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if (offset != 0) |
311 |
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{ |
312 |
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isfillormix = ((opcode == 2) || (opcode == 7)); |
313 |
|
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if (count == 0) |
314 |
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{ |
315 |
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if (isfillormix) |
316 |
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count = CVAL(input) + 1; |
317 |
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else |
318 |
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count = CVAL(input) + offset; |
319 |
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} |
320 |
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else if (isfillormix) |
321 |
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{ |
322 |
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count <<= 3; |
323 |
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} |
324 |
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} |
325 |
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/* Read preliminary data */ |
326 |
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switch (opcode) |
327 |
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{ |
328 |
|
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case 0: /* Fill */ |
329 |
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if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
330 |
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insertmix = True; |
331 |
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break; |
332 |
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case 8: /* Bicolour */ |
333 |
stargo |
681 |
#ifdef NEED_ALIGNMENT |
334 |
stargo |
655 |
memcpy(&colour1,&CVAL2(input),2); |
335 |
stargo |
681 |
#else |
336 |
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colour1 = CVAL2(input); |
337 |
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#endif |
338 |
jsorg71 |
649 |
case 3: /* Colour */ |
339 |
stargo |
681 |
#ifdef NEED_ALIGNMENT |
340 |
stargo |
655 |
memcpy(&colour2,&CVAL2(input),2); |
341 |
stargo |
681 |
#else |
342 |
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colour2 = CVAL2(input); |
343 |
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#endif |
344 |
jsorg71 |
649 |
break; |
345 |
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case 6: /* SetMix/Mix */ |
346 |
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case 7: /* SetMix/FillOrMix */ |
347 |
stargo |
681 |
#ifdef NEED_ALIGNMENT |
348 |
stargo |
655 |
memcpy(&mix,&CVAL2(input),2); |
349 |
stargo |
681 |
#else |
350 |
|
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mix = CVAL2(input); |
351 |
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#endif |
352 |
jsorg71 |
649 |
opcode -= 5; |
353 |
|
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break; |
354 |
|
|
case 9: /* FillOrMix_1 */ |
355 |
|
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mask = 0x03; |
356 |
|
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opcode = 0x02; |
357 |
|
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fom_mask = 3; |
358 |
|
|
break; |
359 |
|
|
case 0x0a: /* FillOrMix_2 */ |
360 |
|
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mask = 0x05; |
361 |
|
|
opcode = 0x02; |
362 |
|
|
fom_mask = 5; |
363 |
|
|
break; |
364 |
|
|
} |
365 |
|
|
lastopcode = opcode; |
366 |
|
|
mixmask = 0; |
367 |
|
|
/* Output body */ |
368 |
|
|
while (count > 0) |
369 |
|
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{ |
370 |
|
|
if (x >= width) |
371 |
|
|
{ |
372 |
|
|
if (height <= 0) |
373 |
|
|
return False; |
374 |
|
|
x = 0; |
375 |
|
|
height--; |
376 |
|
|
prevline = line; |
377 |
|
|
line = ((uint16 *) output) + height * width; |
378 |
|
|
} |
379 |
|
|
switch (opcode) |
380 |
|
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{ |
381 |
|
|
case 0: /* Fill */ |
382 |
|
|
if (insertmix) |
383 |
|
|
{ |
384 |
|
|
if (prevline == NULL) |
385 |
|
|
line[x] = mix; |
386 |
|
|
else |
387 |
|
|
line[x] = prevline[x] ^ mix; |
388 |
|
|
insertmix = False; |
389 |
|
|
count--; |
390 |
|
|
x++; |
391 |
|
|
} |
392 |
|
|
if (prevline == NULL) |
393 |
|
|
{ |
394 |
|
|
REPEAT(line[x] = 0) |
395 |
|
|
} |
396 |
|
|
else |
397 |
|
|
{ |
398 |
|
|
REPEAT(line[x] = prevline[x]) |
399 |
|
|
} |
400 |
|
|
break; |
401 |
|
|
case 1: /* Mix */ |
402 |
|
|
if (prevline == NULL) |
403 |
|
|
{ |
404 |
|
|
REPEAT(line[x] = mix) |
405 |
|
|
} |
406 |
|
|
else |
407 |
|
|
{ |
408 |
|
|
REPEAT(line[x] = prevline[x] ^ mix) |
409 |
|
|
} |
410 |
|
|
break; |
411 |
|
|
case 2: /* Fill or Mix */ |
412 |
|
|
if (prevline == NULL) |
413 |
|
|
{ |
414 |
|
|
REPEAT |
415 |
|
|
( |
416 |
|
|
MASK_UPDATE(); |
417 |
|
|
if (mask & mixmask) |
418 |
|
|
line[x] = mix; |
419 |
|
|
else |
420 |
|
|
line[x] = 0; |
421 |
|
|
) |
422 |
|
|
} |
423 |
|
|
else |
424 |
|
|
{ |
425 |
|
|
REPEAT |
426 |
|
|
( |
427 |
|
|
MASK_UPDATE(); |
428 |
|
|
if (mask & mixmask) |
429 |
|
|
line[x] = prevline[x] ^ mix; |
430 |
|
|
else |
431 |
|
|
line[x] = prevline[x]; |
432 |
|
|
) |
433 |
|
|
} |
434 |
|
|
break; |
435 |
|
|
case 3: /* Colour */ |
436 |
|
|
REPEAT(line[x] = colour2) |
437 |
|
|
break; |
438 |
|
|
case 4: /* Copy */ |
439 |
stargo |
681 |
#ifdef NEED_ALIGNMENT |
440 |
stargo |
655 |
REPEAT(memcpy(&line[x],&CVAL2(input),2)) |
441 |
stargo |
681 |
#else |
442 |
|
|
REPEAT(line[x] = CVAL2(input)) |
443 |
|
|
#endif |
444 |
jsorg71 |
649 |
break; |
445 |
|
|
case 8: /* Bicolour */ |
446 |
|
|
REPEAT |
447 |
|
|
( |
448 |
|
|
if (bicolour) |
449 |
|
|
{ |
450 |
|
|
line[x] = colour2; |
451 |
|
|
bicolour = False; |
452 |
|
|
} |
453 |
|
|
else |
454 |
|
|
{ |
455 |
|
|
line[x] = colour1; |
456 |
|
|
bicolour = True; |
457 |
|
|
count++; |
458 |
|
|
} |
459 |
|
|
) |
460 |
|
|
break; |
461 |
|
|
case 0xd: /* White */ |
462 |
|
|
REPEAT(line[x] = 0xffff) |
463 |
|
|
break; |
464 |
|
|
case 0xe: /* Black */ |
465 |
|
|
REPEAT(line[x] = 0) |
466 |
|
|
break; |
467 |
|
|
default: |
468 |
|
|
unimpl("bitmap opcode 0x%x\n", opcode); |
469 |
|
|
return False; |
470 |
|
|
} |
471 |
|
|
} |
472 |
|
|
} |
473 |
|
|
return True; |
474 |
|
|
} |
475 |
|
|
|
476 |
|
|
/* 3 byte bitmap decompress */ |
477 |
|
|
static BOOL |
478 |
|
|
bitmap_decompress3(uint8 * output, int width, int height, uint8 * input, int size) |
479 |
|
|
{ |
480 |
|
|
uint8 *end = input + size; |
481 |
|
|
uint8 *prevline = NULL, *line = NULL; |
482 |
|
|
int opcode, count, offset, isfillormix, x = width; |
483 |
|
|
int lastopcode = -1, insertmix = False, bicolour = False; |
484 |
|
|
uint8 code; |
485 |
|
|
uint8 colour1[3] = {0, 0, 0}, colour2[3] = {0, 0, 0}; |
486 |
|
|
uint8 mixmask, mask = 0; |
487 |
|
|
uint8 mix[3] = {0xff, 0xff, 0xff}; |
488 |
|
|
int fom_mask = 0; |
489 |
|
|
|
490 |
|
|
while (input < end) |
491 |
|
|
{ |
492 |
|
|
fom_mask = 0; |
493 |
|
|
code = CVAL(input); |
494 |
|
|
opcode = code >> 4; |
495 |
|
|
/* Handle different opcode forms */ |
496 |
|
|
switch (opcode) |
497 |
|
|
{ |
498 |
|
|
case 0xc: |
499 |
|
|
case 0xd: |
500 |
|
|
case 0xe: |
501 |
|
|
opcode -= 6; |
502 |
|
|
count = code & 0xf; |
503 |
|
|
offset = 16; |
504 |
|
|
break; |
505 |
|
|
case 0xf: |
506 |
|
|
opcode = code & 0xf; |
507 |
|
|
if (opcode < 9) |
508 |
|
|
{ |
509 |
|
|
count = CVAL(input); |
510 |
|
|
count |= CVAL(input) << 8; |
511 |
|
|
} |
512 |
|
|
else |
513 |
|
|
{ |
514 |
|
|
count = (opcode < |
515 |
|
|
0xb) ? 8 : 1; |
516 |
|
|
} |
517 |
|
|
offset = 0; |
518 |
|
|
break; |
519 |
|
|
default: |
520 |
|
|
opcode >>= 1; |
521 |
|
|
count = code & 0x1f; |
522 |
|
|
offset = 32; |
523 |
|
|
break; |
524 |
|
|
} |
525 |
|
|
/* Handle strange cases for counts */ |
526 |
|
|
if (offset != 0) |
527 |
|
|
{ |
528 |
|
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
529 |
|
|
if (count == 0) |
530 |
|
|
{ |
531 |
|
|
if (isfillormix) |
532 |
|
|
count = CVAL(input) + 1; |
533 |
|
|
else |
534 |
|
|
count = CVAL(input) + offset; |
535 |
|
|
} |
536 |
|
|
else if (isfillormix) |
537 |
|
|
{ |
538 |
|
|
count <<= 3; |
539 |
|
|
} |
540 |
|
|
} |
541 |
|
|
/* Read preliminary data */ |
542 |
|
|
switch (opcode) |
543 |
|
|
{ |
544 |
|
|
case 0: /* Fill */ |
545 |
|
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
546 |
|
|
insertmix = True; |
547 |
|
|
break; |
548 |
|
|
case 8: /* Bicolour */ |
549 |
|
|
colour1[0] = CVAL(input); |
550 |
|
|
colour1[1] = CVAL(input); |
551 |
|
|
colour1[2] = CVAL(input); |
552 |
|
|
case 3: /* Colour */ |
553 |
|
|
colour2[0] = CVAL(input); |
554 |
|
|
colour2[1] = CVAL(input); |
555 |
|
|
colour2[2] = CVAL(input); |
556 |
|
|
break; |
557 |
|
|
case 6: /* SetMix/Mix */ |
558 |
|
|
case 7: /* SetMix/FillOrMix */ |
559 |
|
|
mix[0] = CVAL(input); |
560 |
|
|
mix[1] = CVAL(input); |
561 |
|
|
mix[2] = CVAL(input); |
562 |
|
|
opcode -= 5; |
563 |
|
|
break; |
564 |
|
|
case 9: /* FillOrMix_1 */ |
565 |
|
|
mask = 0x03; |
566 |
|
|
opcode = 0x02; |
567 |
|
|
fom_mask = 3; |
568 |
|
|
break; |
569 |
|
|
case 0x0a: /* FillOrMix_2 */ |
570 |
|
|
mask = 0x05; |
571 |
|
|
opcode = 0x02; |
572 |
|
|
fom_mask = 5; |
573 |
|
|
break; |
574 |
|
|
} |
575 |
|
|
lastopcode = opcode; |
576 |
|
|
mixmask = 0; |
577 |
|
|
/* Output body */ |
578 |
|
|
while (count > 0) |
579 |
|
|
{ |
580 |
|
|
if (x >= width) |
581 |
|
|
{ |
582 |
|
|
if (height <= 0) |
583 |
|
|
return False; |
584 |
|
|
x = 0; |
585 |
|
|
height--; |
586 |
|
|
prevline = line; |
587 |
|
|
line = output + height * (width * 3); |
588 |
|
|
} |
589 |
|
|
switch (opcode) |
590 |
|
|
{ |
591 |
|
|
case 0: /* Fill */ |
592 |
|
|
if (insertmix) |
593 |
|
|
{ |
594 |
|
|
if (prevline == NULL) |
595 |
|
|
{ |
596 |
|
|
line[x * 3] = mix[0]; |
597 |
|
|
line[x * 3 + 1] = mix[1]; |
598 |
|
|
line[x * 3 + 2] = mix[2]; |
599 |
|
|
} |
600 |
|
|
else |
601 |
|
|
{ |
602 |
|
|
line[x * 3] = |
603 |
|
|
prevline[x * 3] ^ mix[0]; |
604 |
|
|
line[x * 3 + 1] = |
605 |
|
|
prevline[x * 3 + 1] ^ mix[1]; |
606 |
|
|
line[x * 3 + 2] = |
607 |
|
|
prevline[x * 3 + 2] ^ mix[2]; |
608 |
|
|
} |
609 |
|
|
insertmix = False; |
610 |
|
|
count--; |
611 |
|
|
x++; |
612 |
|
|
} |
613 |
|
|
if (prevline == NULL) |
614 |
|
|
{ |
615 |
|
|
REPEAT |
616 |
|
|
( |
617 |
|
|
line[x * 3] = 0; |
618 |
|
|
line[x * 3 + 1] = 0; |
619 |
|
|
line[x * 3 + 2] = 0; |
620 |
|
|
) |
621 |
|
|
} |
622 |
|
|
else |
623 |
|
|
{ |
624 |
|
|
REPEAT |
625 |
|
|
( |
626 |
|
|
line[x * 3] = prevline[x * 3]; |
627 |
|
|
line[x * 3 + 1] = prevline[x * 3 + 1]; |
628 |
|
|
line[x * 3 + 2] = prevline[x * 3 + 2]; |
629 |
|
|
) |
630 |
|
|
} |
631 |
|
|
break; |
632 |
|
|
case 1: /* Mix */ |
633 |
|
|
if (prevline == NULL) |
634 |
|
|
{ |
635 |
|
|
REPEAT |
636 |
|
|
( |
637 |
|
|
line[x * 3] = mix[0]; |
638 |
|
|
line[x * 3 + 1] = mix[1]; |
639 |
|
|
line[x * 3 + 2] = mix[2]; |
640 |
|
|
) |
641 |
|
|
} |
642 |
|
|
else |
643 |
|
|
{ |
644 |
|
|
REPEAT |
645 |
|
|
( |
646 |
|
|
line[x * 3] = |
647 |
|
|
prevline[x * 3] ^ mix[0]; |
648 |
|
|
line[x * 3 + 1] = |
649 |
|
|
prevline[x * 3 + 1] ^ mix[1]; |
650 |
|
|
line[x * 3 + 2] = |
651 |
|
|
prevline[x * 3 + 2] ^ mix[2]; |
652 |
|
|
) |
653 |
|
|
} |
654 |
|
|
break; |
655 |
|
|
case 2: /* Fill or Mix */ |
656 |
|
|
if (prevline == NULL) |
657 |
|
|
{ |
658 |
|
|
REPEAT |
659 |
|
|
( |
660 |
|
|
MASK_UPDATE(); |
661 |
|
|
if (mask & mixmask) |
662 |
|
|
{ |
663 |
|
|
line[x * 3] = mix[0]; |
664 |
|
|
line[x * 3 + 1] = mix[1]; |
665 |
|
|
line[x * 3 + 2] = mix[2]; |
666 |
|
|
} |
667 |
|
|
else |
668 |
|
|
{ |
669 |
|
|
line[x * 3] = 0; |
670 |
|
|
line[x * 3 + 1] = 0; |
671 |
|
|
line[x * 3 + 2] = 0; |
672 |
|
|
} |
673 |
|
|
) |
674 |
|
|
} |
675 |
|
|
else |
676 |
|
|
{ |
677 |
|
|
REPEAT |
678 |
|
|
( |
679 |
|
|
MASK_UPDATE(); |
680 |
|
|
if (mask & mixmask) |
681 |
|
|
{ |
682 |
|
|
line[x * 3] = |
683 |
|
|
prevline[x * 3] ^ mix [0]; |
684 |
|
|
line[x * 3 + 1] = |
685 |
|
|
prevline[x * 3 + 1] ^ mix [1]; |
686 |
|
|
line[x * 3 + 2] = |
687 |
|
|
prevline[x * 3 + 2] ^ mix [2]; |
688 |
|
|
} |
689 |
|
|
else |
690 |
|
|
{ |
691 |
|
|
line[x * 3] = |
692 |
|
|
prevline[x * 3]; |
693 |
|
|
line[x * 3 + 1] = |
694 |
|
|
prevline[x * 3 + 1]; |
695 |
|
|
line[x * 3 + 2] = |
696 |
|
|
prevline[x * 3 + 2]; |
697 |
|
|
} |
698 |
|
|
) |
699 |
|
|
} |
700 |
|
|
break; |
701 |
|
|
case 3: /* Colour */ |
702 |
|
|
REPEAT |
703 |
|
|
( |
704 |
|
|
line[x * 3] = colour2 [0]; |
705 |
|
|
line[x * 3 + 1] = colour2 [1]; |
706 |
|
|
line[x * 3 + 2] = colour2 [2]; |
707 |
|
|
) |
708 |
|
|
break; |
709 |
|
|
case 4: /* Copy */ |
710 |
|
|
REPEAT |
711 |
|
|
( |
712 |
|
|
line[x * 3] = CVAL(input); |
713 |
|
|
line[x * 3 + 1] = CVAL(input); |
714 |
|
|
line[x * 3 + 2] = CVAL(input); |
715 |
|
|
) |
716 |
|
|
break; |
717 |
|
|
case 8: /* Bicolour */ |
718 |
|
|
REPEAT |
719 |
|
|
( |
720 |
|
|
if (bicolour) |
721 |
|
|
{ |
722 |
|
|
line[x * 3] = colour2[0]; |
723 |
|
|
line[x * 3 + 1] = colour2[1]; |
724 |
|
|
line[x * 3 + 2] = colour2[2]; |
725 |
|
|
bicolour = False; |
726 |
|
|
} |
727 |
|
|
else |
728 |
|
|
{ |
729 |
|
|
line[x * 3] = colour1[0]; |
730 |
|
|
line[x * 3 + 1] = colour1[1]; |
731 |
|
|
line[x * 3 + 2] = colour1[2]; |
732 |
|
|
bicolour = True; |
733 |
|
|
count++; |
734 |
|
|
} |
735 |
|
|
) |
736 |
|
|
break; |
737 |
|
|
case 0xd: /* White */ |
738 |
|
|
REPEAT |
739 |
|
|
( |
740 |
|
|
line[x * 3] = 0xff; |
741 |
|
|
line[x * 3 + 1] = 0xff; |
742 |
|
|
line[x * 3 + 2] = 0xff; |
743 |
|
|
) |
744 |
|
|
break; |
745 |
|
|
case 0xe: /* Black */ |
746 |
|
|
REPEAT |
747 |
|
|
( |
748 |
|
|
line[x * 3] = 0; |
749 |
|
|
line[x * 3 + 1] = 0; |
750 |
|
|
line[x * 3 + 2] = 0; |
751 |
|
|
) |
752 |
|
|
break; |
753 |
|
|
default: |
754 |
|
|
unimpl("bitmap opcode 0x%x\n", opcode); |
755 |
|
|
return False; |
756 |
|
|
} |
757 |
|
|
} |
758 |
|
|
} |
759 |
|
|
return True; |
760 |
|
|
} |
761 |
|
|
|
762 |
|
|
#else |
763 |
|
|
|
764 |
astrand |
321 |
static uint32 |
765 |
jsorg71 |
649 |
cvalx(uint8 **input, int Bpp) |
766 |
jsorg71 |
314 |
{ |
767 |
|
|
uint32 rv = 0; |
768 |
|
|
memcpy(&rv, *input, Bpp); |
769 |
|
|
*input += Bpp; |
770 |
|
|
return rv; |
771 |
|
|
} |
772 |
|
|
|
773 |
astrand |
321 |
static void |
774 |
jsorg71 |
649 |
setli(uint8 *input, int offset, uint32 value, int Bpp) |
775 |
jsorg71 |
314 |
{ |
776 |
|
|
input += offset * Bpp; |
777 |
|
|
memcpy(input, &value, Bpp); |
778 |
|
|
} |
779 |
|
|
|
780 |
astrand |
321 |
static uint32 |
781 |
jsorg71 |
649 |
getli(uint8 *input, int offset, int Bpp) |
782 |
jsorg71 |
314 |
{ |
783 |
|
|
uint32 rv = 0; |
784 |
|
|
input += offset * Bpp; |
785 |
|
|
memcpy(&rv, input, Bpp); |
786 |
|
|
return rv; |
787 |
|
|
} |
788 |
|
|
|
789 |
jsorg71 |
649 |
static BOOL |
790 |
|
|
bitmap_decompressx(uint8 *output, int width, int height, uint8 *input, int size, int Bpp) |
791 |
matty |
3 |
{ |
792 |
jsorg71 |
649 |
uint8 *end = input + size; |
793 |
|
|
uint8 *prevline = NULL, *line = NULL; |
794 |
matty |
7 |
int opcode, count, offset, isfillormix, x = width; |
795 |
matty |
19 |
int lastopcode = -1, insertmix = False, bicolour = False; |
796 |
jsorg71 |
309 |
uint8 code; |
797 |
jsorg71 |
314 |
uint32 colour1 = 0, colour2 = 0; |
798 |
jsorg71 |
309 |
uint8 mixmask, mask = 0; |
799 |
jsorg71 |
314 |
uint32 mix = 0xffffffff; |
800 |
jsorg71 |
309 |
int fom_mask = 0; |
801 |
|
|
|
802 |
|
|
while (input < end) |
803 |
|
|
{ |
804 |
|
|
fom_mask = 0; |
805 |
|
|
code = CVAL(input); |
806 |
|
|
opcode = code >> 4; |
807 |
|
|
|
808 |
|
|
/* Handle different opcode forms */ |
809 |
|
|
switch (opcode) |
810 |
|
|
{ |
811 |
|
|
case 0xc: |
812 |
|
|
case 0xd: |
813 |
|
|
case 0xe: |
814 |
|
|
opcode -= 6; |
815 |
|
|
count = code & 0xf; |
816 |
|
|
offset = 16; |
817 |
|
|
break; |
818 |
|
|
|
819 |
|
|
case 0xf: |
820 |
|
|
opcode = code & 0xf; |
821 |
|
|
if (opcode < 9) |
822 |
|
|
{ |
823 |
|
|
count = CVAL(input); |
824 |
|
|
count |= CVAL(input) << 8; |
825 |
|
|
} |
826 |
|
|
else |
827 |
|
|
{ |
828 |
jsorg71 |
314 |
count = (opcode < 0xb) ? 8 : 1; |
829 |
jsorg71 |
309 |
} |
830 |
|
|
offset = 0; |
831 |
|
|
break; |
832 |
|
|
|
833 |
|
|
default: |
834 |
|
|
opcode >>= 1; |
835 |
|
|
count = code & 0x1f; |
836 |
|
|
offset = 32; |
837 |
|
|
break; |
838 |
|
|
} |
839 |
|
|
|
840 |
|
|
/* Handle strange cases for counts */ |
841 |
|
|
if (offset != 0) |
842 |
|
|
{ |
843 |
|
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
844 |
|
|
|
845 |
|
|
if (count == 0) |
846 |
|
|
{ |
847 |
|
|
if (isfillormix) |
848 |
|
|
count = CVAL(input) + 1; |
849 |
|
|
else |
850 |
|
|
count = CVAL(input) + offset; |
851 |
|
|
} |
852 |
|
|
else if (isfillormix) |
853 |
|
|
{ |
854 |
|
|
count <<= 3; |
855 |
|
|
} |
856 |
|
|
} |
857 |
|
|
|
858 |
|
|
/* Read preliminary data */ |
859 |
|
|
switch (opcode) |
860 |
|
|
{ |
861 |
|
|
case 0: /* Fill */ |
862 |
|
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
863 |
|
|
insertmix = True; |
864 |
|
|
break; |
865 |
|
|
case 8: /* Bicolour */ |
866 |
jsorg71 |
314 |
colour1 = cvalx(&input, Bpp); |
867 |
jsorg71 |
309 |
case 3: /* Colour */ |
868 |
jsorg71 |
314 |
colour2 = cvalx(&input, Bpp); |
869 |
jsorg71 |
309 |
break; |
870 |
|
|
case 6: /* SetMix/Mix */ |
871 |
|
|
case 7: /* SetMix/FillOrMix */ |
872 |
jsorg71 |
314 |
mix = cvalx(&input, Bpp); |
873 |
jsorg71 |
309 |
opcode -= 5; |
874 |
|
|
break; |
875 |
|
|
case 9: /* FillOrMix_1 */ |
876 |
|
|
mask = 0x03; |
877 |
|
|
opcode = 0x02; |
878 |
|
|
fom_mask = 3; |
879 |
|
|
break; |
880 |
|
|
case 0x0a: /* FillOrMix_2 */ |
881 |
|
|
mask = 0x05; |
882 |
|
|
opcode = 0x02; |
883 |
|
|
fom_mask = 5; |
884 |
|
|
break; |
885 |
|
|
|
886 |
|
|
} |
887 |
|
|
|
888 |
|
|
lastopcode = opcode; |
889 |
|
|
mixmask = 0; |
890 |
|
|
|
891 |
|
|
/* Output body */ |
892 |
|
|
while (count > 0) |
893 |
|
|
{ |
894 |
|
|
if (x >= width) |
895 |
|
|
{ |
896 |
|
|
if (height <= 0) |
897 |
|
|
return False; |
898 |
|
|
|
899 |
|
|
x = 0; |
900 |
|
|
height--; |
901 |
|
|
|
902 |
|
|
prevline = line; |
903 |
jsorg71 |
314 |
line = output + height * width * Bpp; |
904 |
jsorg71 |
309 |
} |
905 |
|
|
|
906 |
|
|
switch (opcode) |
907 |
|
|
{ |
908 |
|
|
case 0: /* Fill */ |
909 |
|
|
if (insertmix) |
910 |
|
|
{ |
911 |
|
|
if (prevline == NULL) |
912 |
jsorg71 |
314 |
setli(line, x, mix, Bpp); |
913 |
jsorg71 |
309 |
else |
914 |
astrand |
318 |
setli(line, x, |
915 |
|
|
getli(prevline, x, Bpp) ^ mix, Bpp); |
916 |
jsorg71 |
309 |
|
917 |
|
|
insertmix = False; |
918 |
|
|
count--; |
919 |
|
|
x++; |
920 |
|
|
} |
921 |
|
|
|
922 |
|
|
if (prevline == NULL) |
923 |
|
|
{ |
924 |
astrand |
318 |
REPEAT(setli(line, x, 0, Bpp))} |
925 |
jsorg71 |
309 |
else |
926 |
|
|
{ |
927 |
astrand |
318 |
REPEAT(setli |
928 |
|
|
(line, x, getli(prevline, x, Bpp), Bpp)); |
929 |
jsorg71 |
309 |
} |
930 |
|
|
break; |
931 |
|
|
|
932 |
|
|
case 1: /* Mix */ |
933 |
|
|
if (prevline == NULL) |
934 |
|
|
{ |
935 |
jsorg71 |
314 |
REPEAT(setli(line, x, mix, Bpp)); |
936 |
jsorg71 |
309 |
} |
937 |
|
|
else |
938 |
|
|
{ |
939 |
astrand |
318 |
REPEAT(setli |
940 |
|
|
(line, x, getli(prevline, x, Bpp) ^ mix, |
941 |
|
|
Bpp)); |
942 |
jsorg71 |
309 |
} |
943 |
|
|
break; |
944 |
|
|
|
945 |
|
|
case 2: /* Fill or Mix */ |
946 |
|
|
if (prevline == NULL) |
947 |
|
|
{ |
948 |
|
|
REPEAT(MASK_UPDATE(); |
949 |
jsorg71 |
314 |
if (mask & mixmask) setli(line, x, mix, Bpp); |
950 |
jsorg71 |
309 |
else |
951 |
jsorg71 |
314 |
setli(line, x, 0, Bpp);); |
952 |
jsorg71 |
309 |
} |
953 |
|
|
else |
954 |
|
|
{ |
955 |
|
|
REPEAT(MASK_UPDATE(); |
956 |
|
|
if (mask & mixmask) |
957 |
astrand |
318 |
setli(line, x, getli(prevline, x, Bpp) ^ mix, |
958 |
|
|
Bpp); |
959 |
jsorg71 |
309 |
else |
960 |
astrand |
318 |
setli(line, x, getli(prevline, x, Bpp), |
961 |
|
|
Bpp);); |
962 |
jsorg71 |
309 |
} |
963 |
|
|
break; |
964 |
|
|
|
965 |
|
|
case 3: /* Colour */ |
966 |
jsorg71 |
314 |
REPEAT(setli(line, x, colour2, Bpp)); |
967 |
jsorg71 |
309 |
break; |
968 |
|
|
|
969 |
|
|
case 4: /* Copy */ |
970 |
jsorg71 |
314 |
REPEAT(setli(line, x, cvalx(&input, Bpp), Bpp)); |
971 |
jsorg71 |
309 |
break; |
972 |
|
|
|
973 |
|
|
case 8: /* Bicolour */ |
974 |
|
|
REPEAT(if (bicolour) |
975 |
|
|
{ |
976 |
jsorg71 |
314 |
setli(line, x, colour2, Bpp); bicolour = False;} |
977 |
jsorg71 |
309 |
else |
978 |
|
|
{ |
979 |
astrand |
318 |
setli(line, x, colour1, Bpp); bicolour = True; |
980 |
|
|
count++;} |
981 |
jsorg71 |
309 |
); |
982 |
|
|
break; |
983 |
|
|
|
984 |
|
|
case 0xd: /* White */ |
985 |
jsorg71 |
314 |
REPEAT(setli(line, x, 0xffffffff, Bpp)); |
986 |
jsorg71 |
309 |
break; |
987 |
|
|
|
988 |
|
|
case 0xe: /* Black */ |
989 |
jsorg71 |
314 |
REPEAT(setli(line, x, 0, Bpp)); |
990 |
jsorg71 |
309 |
break; |
991 |
|
|
|
992 |
|
|
default: |
993 |
|
|
unimpl("bitmap opcode 0x%x\n", opcode); |
994 |
|
|
return False; |
995 |
|
|
} |
996 |
|
|
} |
997 |
|
|
} |
998 |
|
|
|
999 |
|
|
return True; |
1000 |
|
|
} |
1001 |
jsorg71 |
649 |
|
1002 |
|
|
#endif |
1003 |
|
|
|
1004 |
|
|
/* main decompress function */ |
1005 |
|
|
BOOL |
1006 |
|
|
bitmap_decompress(uint8 * output, int width, int height, uint8 * input, int size, int Bpp) |
1007 |
|
|
{ |
1008 |
|
|
#ifdef BITMAP_SPEED_OVER_SIZE |
1009 |
|
|
BOOL rv = False; |
1010 |
|
|
switch (Bpp) |
1011 |
|
|
{ |
1012 |
|
|
case 1: |
1013 |
|
|
rv = bitmap_decompress1(output, width, height, input, size); |
1014 |
|
|
break; |
1015 |
|
|
case 2: |
1016 |
|
|
rv = bitmap_decompress2(output, width, height, input, size); |
1017 |
|
|
break; |
1018 |
|
|
case 3: |
1019 |
|
|
rv = bitmap_decompress3(output, width, height, input, size); |
1020 |
|
|
break; |
1021 |
|
|
} |
1022 |
|
|
#else |
1023 |
|
|
BOOL rv; |
1024 |
|
|
rv = bitmap_decompressx(output, width, height, input, size, Bpp); |
1025 |
|
|
#endif |
1026 |
|
|
return rv; |
1027 |
|
|
} |
1028 |
|
|
|
1029 |
|
|
/* *INDENT-ON* */ |