1 |
/* -*- c-basic-offset: 8 -*- |
/* |
2 |
rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
3 |
Bitmap decompression routines |
Bitmap decompression routines |
4 |
Copyright (C) Matthew Chapman 1999-2002 |
Copyright (C) Matthew Chapman 1999-2002 |
18 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 |
*/ |
*/ |
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|
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/* 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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|
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#define BITMAP_SPEED_OVER_SIZE |
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|
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/* indent is confused by this file */ |
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/* *INDENT-OFF* */ |
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|
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#include "rdesktop.h" |
#include "rdesktop.h" |
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|
33 |
#define CVAL(p) (*(p++)) |
#define CVAL(p) (*(p++)) |
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#define CVAL2(p) (*(((uint16*)p)++)) /* for 16 bit */ |
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|
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#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
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|
38 |
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#define REPEAT(statement) \ |
39 |
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{ \ |
40 |
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while((count & ~0x7) && ((x+8) < width)) \ |
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UNROLL8( statement; count--; x++; ); \ |
42 |
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\ |
43 |
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while((count > 0) && (x < width)) \ |
44 |
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{ \ |
45 |
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statement; \ |
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count--; \ |
47 |
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x++; \ |
48 |
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} \ |
49 |
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} |
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|
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#define MASK_UPDATE() \ |
52 |
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{ \ |
53 |
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mixmask <<= 1; \ |
54 |
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if (mixmask == 0) \ |
55 |
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{ \ |
56 |
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mask = fom_mask ? fom_mask : CVAL(input); \ |
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mixmask = 1; \ |
58 |
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} \ |
59 |
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} |
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|
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#ifdef BITMAP_SPEED_OVER_SIZE |
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|
63 |
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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) |
66 |
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{ |
67 |
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uint8 *end = input + size; |
68 |
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uint8 *prevline = NULL, *line = NULL; |
69 |
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int opcode, count, offset, isfillormix, x = width; |
70 |
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int lastopcode = -1, insertmix = False, bicolour = False; |
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uint8 code; |
72 |
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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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|
77 |
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while (input < end) |
78 |
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{ |
79 |
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fom_mask = 0; |
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code = CVAL(input); |
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opcode = code >> 4; |
82 |
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/* Handle different opcode forms */ |
83 |
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switch (opcode) |
84 |
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{ |
85 |
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case 0xc: |
86 |
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case 0xd: |
87 |
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case 0xe: |
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opcode -= 6; |
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count = code & 0xf; |
90 |
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offset = 16; |
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break; |
92 |
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case 0xf: |
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opcode = code & 0xf; |
94 |
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if (opcode < 9) |
95 |
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{ |
96 |
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count = CVAL(input); |
97 |
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count |= CVAL(input) << 8; |
98 |
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} |
99 |
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else |
100 |
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{ |
101 |
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count = (opcode < 0xb) ? 8 : 1; |
102 |
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} |
103 |
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offset = 0; |
104 |
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break; |
105 |
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default: |
106 |
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opcode >>= 1; |
107 |
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count = code & 0x1f; |
108 |
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offset = 32; |
109 |
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break; |
110 |
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} |
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/* Handle strange cases for counts */ |
112 |
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if (offset != 0) |
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{ |
114 |
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isfillormix = ((opcode == 2) || (opcode == 7)); |
115 |
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if (count == 0) |
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{ |
117 |
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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; |
121 |
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} |
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else if (isfillormix) |
123 |
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{ |
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count <<= 3; |
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} |
126 |
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} |
127 |
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/* Read preliminary data */ |
128 |
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switch (opcode) |
129 |
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{ |
130 |
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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; |
134 |
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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; |
139 |
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case 6: /* SetMix/Mix */ |
140 |
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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; |
147 |
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fom_mask = 3; |
148 |
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break; |
149 |
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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; |
154 |
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} |
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lastopcode = opcode; |
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mixmask = 0; |
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/* Output body */ |
158 |
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while (count > 0) |
159 |
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{ |
160 |
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if (x >= width) |
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{ |
162 |
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if (height <= 0) |
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return False; |
164 |
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x = 0; |
165 |
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height--; |
166 |
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prevline = line; |
167 |
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line = output + height * width; |
168 |
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} |
169 |
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switch (opcode) |
170 |
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{ |
171 |
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case 0: /* Fill */ |
172 |
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if (insertmix) |
173 |
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{ |
174 |
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if (prevline == NULL) |
175 |
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line[x] = mix; |
176 |
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else |
177 |
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line[x] = prevline[x] ^ mix; |
178 |
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insertmix = False; |
179 |
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count--; |
180 |
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x++; |
181 |
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} |
182 |
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if (prevline == NULL) |
183 |
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{ |
184 |
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REPEAT(line[x] = 0) |
185 |
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} |
186 |
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else |
187 |
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{ |
188 |
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REPEAT(line[x] = prevline[x]) |
189 |
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} |
190 |
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break; |
191 |
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case 1: /* Mix */ |
192 |
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if (prevline == NULL) |
193 |
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{ |
194 |
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REPEAT(line[x] = mix) |
195 |
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} |
196 |
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else |
197 |
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{ |
198 |
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REPEAT(line[x] = prevline[x] ^ mix) |
199 |
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} |
200 |
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break; |
201 |
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case 2: /* Fill or Mix */ |
202 |
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if (prevline == NULL) |
203 |
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{ |
204 |
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REPEAT |
205 |
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( |
206 |
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MASK_UPDATE(); |
207 |
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if (mask & mixmask) |
208 |
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line[x] = mix; |
209 |
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else |
210 |
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line[x] = 0; |
211 |
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) |
212 |
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} |
213 |
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else |
214 |
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{ |
215 |
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REPEAT |
216 |
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( |
217 |
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MASK_UPDATE(); |
218 |
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if (mask & mixmask) |
219 |
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line[x] = prevline[x] ^ mix; |
220 |
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else |
221 |
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line[x] = prevline[x]; |
222 |
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) |
223 |
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} |
224 |
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break; |
225 |
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case 3: /* Colour */ |
226 |
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REPEAT(line[x] = colour2) |
227 |
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break; |
228 |
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case 4: /* Copy */ |
229 |
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REPEAT(line[x] = CVAL(input)) |
230 |
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break; |
231 |
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case 8: /* Bicolour */ |
232 |
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REPEAT |
233 |
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( |
234 |
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if (bicolour) |
235 |
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{ |
236 |
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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; |
242 |
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bicolour = True; count++; |
243 |
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} |
244 |
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) |
245 |
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break; |
246 |
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case 0xd: /* White */ |
247 |
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REPEAT(line[x] = 0xff) |
248 |
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break; |
249 |
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case 0xe: /* Black */ |
250 |
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REPEAT(line[x] = 0) |
251 |
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break; |
252 |
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default: |
253 |
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unimpl("bitmap opcode 0x%x\n", opcode); |
254 |
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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 |
|
if (offset != 0) |
311 |
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{ |
312 |
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isfillormix = ((opcode == 2) || (opcode == 7)); |
313 |
|
if (count == 0) |
314 |
|
{ |
315 |
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if (isfillormix) |
316 |
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count = CVAL(input) + 1; |
317 |
|
else |
318 |
|
count = CVAL(input) + offset; |
319 |
|
} |
320 |
|
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 |
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colour1 = CVAL2(input); |
334 |
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case 3: /* Colour */ |
335 |
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colour2 = CVAL2(input); |
336 |
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break; |
337 |
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case 6: /* SetMix/Mix */ |
338 |
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case 7: /* SetMix/FillOrMix */ |
339 |
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mix = CVAL2(input); |
340 |
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opcode -= 5; |
341 |
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break; |
342 |
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case 9: /* FillOrMix_1 */ |
343 |
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mask = 0x03; |
344 |
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opcode = 0x02; |
345 |
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fom_mask = 3; |
346 |
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break; |
347 |
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case 0x0a: /* FillOrMix_2 */ |
348 |
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mask = 0x05; |
349 |
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opcode = 0x02; |
350 |
|
fom_mask = 5; |
351 |
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break; |
352 |
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} |
353 |
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lastopcode = opcode; |
354 |
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mixmask = 0; |
355 |
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/* Output body */ |
356 |
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while (count > 0) |
357 |
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{ |
358 |
|
if (x >= width) |
359 |
|
{ |
360 |
|
if (height <= 0) |
361 |
|
return False; |
362 |
|
x = 0; |
363 |
|
height--; |
364 |
|
prevline = line; |
365 |
|
line = ((uint16 *) output) + height * width; |
366 |
|
} |
367 |
|
switch (opcode) |
368 |
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{ |
369 |
|
case 0: /* Fill */ |
370 |
|
if (insertmix) |
371 |
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{ |
372 |
|
if (prevline == NULL) |
373 |
|
line[x] = mix; |
374 |
|
else |
375 |
|
line[x] = prevline[x] ^ mix; |
376 |
|
insertmix = False; |
377 |
|
count--; |
378 |
|
x++; |
379 |
|
} |
380 |
|
if (prevline == NULL) |
381 |
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{ |
382 |
|
REPEAT(line[x] = 0) |
383 |
|
} |
384 |
|
else |
385 |
|
{ |
386 |
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REPEAT(line[x] = prevline[x]) |
387 |
|
} |
388 |
|
break; |
389 |
|
case 1: /* Mix */ |
390 |
|
if (prevline == NULL) |
391 |
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{ |
392 |
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REPEAT(line[x] = mix) |
393 |
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} |
394 |
|
else |
395 |
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{ |
396 |
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REPEAT(line[x] = prevline[x] ^ mix) |
397 |
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} |
398 |
|
break; |
399 |
|
case 2: /* Fill or Mix */ |
400 |
|
if (prevline == NULL) |
401 |
|
{ |
402 |
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REPEAT |
403 |
|
( |
404 |
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MASK_UPDATE(); |
405 |
|
if (mask & mixmask) |
406 |
|
line[x] = mix; |
407 |
|
else |
408 |
|
line[x] = 0; |
409 |
|
) |
410 |
|
} |
411 |
|
else |
412 |
|
{ |
413 |
|
REPEAT |
414 |
|
( |
415 |
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MASK_UPDATE(); |
416 |
|
if (mask & mixmask) |
417 |
|
line[x] = prevline[x] ^ mix; |
418 |
|
else |
419 |
|
line[x] = prevline[x]; |
420 |
|
) |
421 |
|
} |
422 |
|
break; |
423 |
|
case 3: /* Colour */ |
424 |
|
REPEAT(line[x] = colour2) |
425 |
|
break; |
426 |
|
case 4: /* Copy */ |
427 |
|
REPEAT(line[x] = CVAL2(input)) |
428 |
|
break; |
429 |
|
case 8: /* Bicolour */ |
430 |
|
REPEAT |
431 |
|
( |
432 |
|
if (bicolour) |
433 |
|
{ |
434 |
|
line[x] = colour2; |
435 |
|
bicolour = False; |
436 |
|
} |
437 |
|
else |
438 |
|
{ |
439 |
|
line[x] = colour1; |
440 |
|
bicolour = True; |
441 |
|
count++; |
442 |
|
} |
443 |
|
) |
444 |
|
break; |
445 |
|
case 0xd: /* White */ |
446 |
|
REPEAT(line[x] = 0xffff) |
447 |
|
break; |
448 |
|
case 0xe: /* Black */ |
449 |
|
REPEAT(line[x] = 0) |
450 |
|
break; |
451 |
|
default: |
452 |
|
unimpl("bitmap opcode 0x%x\n", opcode); |
453 |
|
return False; |
454 |
|
} |
455 |
|
} |
456 |
|
} |
457 |
|
return True; |
458 |
|
} |
459 |
|
|
460 |
|
/* 3 byte bitmap decompress */ |
461 |
|
static BOOL |
462 |
|
bitmap_decompress3(uint8 * output, int width, int height, uint8 * input, int size) |
463 |
|
{ |
464 |
|
uint8 *end = input + size; |
465 |
|
uint8 *prevline = NULL, *line = NULL; |
466 |
|
int opcode, count, offset, isfillormix, x = width; |
467 |
|
int lastopcode = -1, insertmix = False, bicolour = False; |
468 |
|
uint8 code; |
469 |
|
uint8 colour1[3] = {0, 0, 0}, colour2[3] = {0, 0, 0}; |
470 |
|
uint8 mixmask, mask = 0; |
471 |
|
uint8 mix[3] = {0xff, 0xff, 0xff}; |
472 |
|
int fom_mask = 0; |
473 |
|
|
474 |
|
while (input < end) |
475 |
|
{ |
476 |
|
fom_mask = 0; |
477 |
|
code = CVAL(input); |
478 |
|
opcode = code >> 4; |
479 |
|
/* Handle different opcode forms */ |
480 |
|
switch (opcode) |
481 |
|
{ |
482 |
|
case 0xc: |
483 |
|
case 0xd: |
484 |
|
case 0xe: |
485 |
|
opcode -= 6; |
486 |
|
count = code & 0xf; |
487 |
|
offset = 16; |
488 |
|
break; |
489 |
|
case 0xf: |
490 |
|
opcode = code & 0xf; |
491 |
|
if (opcode < 9) |
492 |
|
{ |
493 |
|
count = CVAL(input); |
494 |
|
count |= CVAL(input) << 8; |
495 |
|
} |
496 |
|
else |
497 |
|
{ |
498 |
|
count = (opcode < |
499 |
|
0xb) ? 8 : 1; |
500 |
|
} |
501 |
|
offset = 0; |
502 |
|
break; |
503 |
|
default: |
504 |
|
opcode >>= 1; |
505 |
|
count = code & 0x1f; |
506 |
|
offset = 32; |
507 |
|
break; |
508 |
|
} |
509 |
|
/* Handle strange cases for counts */ |
510 |
|
if (offset != 0) |
511 |
|
{ |
512 |
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
513 |
|
if (count == 0) |
514 |
|
{ |
515 |
|
if (isfillormix) |
516 |
|
count = CVAL(input) + 1; |
517 |
|
else |
518 |
|
count = CVAL(input) + offset; |
519 |
|
} |
520 |
|
else if (isfillormix) |
521 |
|
{ |
522 |
|
count <<= 3; |
523 |
|
} |
524 |
|
} |
525 |
|
/* Read preliminary data */ |
526 |
|
switch (opcode) |
527 |
|
{ |
528 |
|
case 0: /* Fill */ |
529 |
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
530 |
|
insertmix = True; |
531 |
|
break; |
532 |
|
case 8: /* Bicolour */ |
533 |
|
colour1[0] = CVAL(input); |
534 |
|
colour1[1] = CVAL(input); |
535 |
|
colour1[2] = CVAL(input); |
536 |
|
case 3: /* Colour */ |
537 |
|
colour2[0] = CVAL(input); |
538 |
|
colour2[1] = CVAL(input); |
539 |
|
colour2[2] = CVAL(input); |
540 |
|
break; |
541 |
|
case 6: /* SetMix/Mix */ |
542 |
|
case 7: /* SetMix/FillOrMix */ |
543 |
|
mix[0] = CVAL(input); |
544 |
|
mix[1] = CVAL(input); |
545 |
|
mix[2] = CVAL(input); |
546 |
|
opcode -= 5; |
547 |
|
break; |
548 |
|
case 9: /* FillOrMix_1 */ |
549 |
|
mask = 0x03; |
550 |
|
opcode = 0x02; |
551 |
|
fom_mask = 3; |
552 |
|
break; |
553 |
|
case 0x0a: /* FillOrMix_2 */ |
554 |
|
mask = 0x05; |
555 |
|
opcode = 0x02; |
556 |
|
fom_mask = 5; |
557 |
|
break; |
558 |
|
} |
559 |
|
lastopcode = opcode; |
560 |
|
mixmask = 0; |
561 |
|
/* Output body */ |
562 |
|
while (count > 0) |
563 |
|
{ |
564 |
|
if (x >= width) |
565 |
|
{ |
566 |
|
if (height <= 0) |
567 |
|
return False; |
568 |
|
x = 0; |
569 |
|
height--; |
570 |
|
prevline = line; |
571 |
|
line = output + height * (width * 3); |
572 |
|
} |
573 |
|
switch (opcode) |
574 |
|
{ |
575 |
|
case 0: /* Fill */ |
576 |
|
if (insertmix) |
577 |
|
{ |
578 |
|
if (prevline == NULL) |
579 |
|
{ |
580 |
|
line[x * 3] = mix[0]; |
581 |
|
line[x * 3 + 1] = mix[1]; |
582 |
|
line[x * 3 + 2] = mix[2]; |
583 |
|
} |
584 |
|
else |
585 |
|
{ |
586 |
|
line[x * 3] = |
587 |
|
prevline[x * 3] ^ mix[0]; |
588 |
|
line[x * 3 + 1] = |
589 |
|
prevline[x * 3 + 1] ^ mix[1]; |
590 |
|
line[x * 3 + 2] = |
591 |
|
prevline[x * 3 + 2] ^ mix[2]; |
592 |
|
} |
593 |
|
insertmix = False; |
594 |
|
count--; |
595 |
|
x++; |
596 |
|
} |
597 |
|
if (prevline == NULL) |
598 |
|
{ |
599 |
|
REPEAT |
600 |
|
( |
601 |
|
line[x * 3] = 0; |
602 |
|
line[x * 3 + 1] = 0; |
603 |
|
line[x * 3 + 2] = 0; |
604 |
|
) |
605 |
|
} |
606 |
|
else |
607 |
|
{ |
608 |
|
REPEAT |
609 |
|
( |
610 |
|
line[x * 3] = prevline[x * 3]; |
611 |
|
line[x * 3 + 1] = prevline[x * 3 + 1]; |
612 |
|
line[x * 3 + 2] = prevline[x * 3 + 2]; |
613 |
|
) |
614 |
|
} |
615 |
|
break; |
616 |
|
case 1: /* Mix */ |
617 |
|
if (prevline == NULL) |
618 |
|
{ |
619 |
|
REPEAT |
620 |
|
( |
621 |
|
line[x * 3] = mix[0]; |
622 |
|
line[x * 3 + 1] = mix[1]; |
623 |
|
line[x * 3 + 2] = mix[2]; |
624 |
|
) |
625 |
|
} |
626 |
|
else |
627 |
|
{ |
628 |
|
REPEAT |
629 |
|
( |
630 |
|
line[x * 3] = |
631 |
|
prevline[x * 3] ^ mix[0]; |
632 |
|
line[x * 3 + 1] = |
633 |
|
prevline[x * 3 + 1] ^ mix[1]; |
634 |
|
line[x * 3 + 2] = |
635 |
|
prevline[x * 3 + 2] ^ mix[2]; |
636 |
|
) |
637 |
|
} |
638 |
|
break; |
639 |
|
case 2: /* Fill or Mix */ |
640 |
|
if (prevline == NULL) |
641 |
|
{ |
642 |
|
REPEAT |
643 |
|
( |
644 |
|
MASK_UPDATE(); |
645 |
|
if (mask & mixmask) |
646 |
|
{ |
647 |
|
line[x * 3] = mix[0]; |
648 |
|
line[x * 3 + 1] = mix[1]; |
649 |
|
line[x * 3 + 2] = mix[2]; |
650 |
|
} |
651 |
|
else |
652 |
|
{ |
653 |
|
line[x * 3] = 0; |
654 |
|
line[x * 3 + 1] = 0; |
655 |
|
line[x * 3 + 2] = 0; |
656 |
|
} |
657 |
|
) |
658 |
|
} |
659 |
|
else |
660 |
|
{ |
661 |
|
REPEAT |
662 |
|
( |
663 |
|
MASK_UPDATE(); |
664 |
|
if (mask & mixmask) |
665 |
|
{ |
666 |
|
line[x * 3] = |
667 |
|
prevline[x * 3] ^ mix [0]; |
668 |
|
line[x * 3 + 1] = |
669 |
|
prevline[x * 3 + 1] ^ mix [1]; |
670 |
|
line[x * 3 + 2] = |
671 |
|
prevline[x * 3 + 2] ^ mix [2]; |
672 |
|
} |
673 |
|
else |
674 |
|
{ |
675 |
|
line[x * 3] = |
676 |
|
prevline[x * 3]; |
677 |
|
line[x * 3 + 1] = |
678 |
|
prevline[x * 3 + 1]; |
679 |
|
line[x * 3 + 2] = |
680 |
|
prevline[x * 3 + 2]; |
681 |
|
} |
682 |
|
) |
683 |
|
} |
684 |
|
break; |
685 |
|
case 3: /* Colour */ |
686 |
|
REPEAT |
687 |
|
( |
688 |
|
line[x * 3] = colour2 [0]; |
689 |
|
line[x * 3 + 1] = colour2 [1]; |
690 |
|
line[x * 3 + 2] = colour2 [2]; |
691 |
|
) |
692 |
|
break; |
693 |
|
case 4: /* Copy */ |
694 |
|
REPEAT |
695 |
|
( |
696 |
|
line[x * 3] = CVAL(input); |
697 |
|
line[x * 3 + 1] = CVAL(input); |
698 |
|
line[x * 3 + 2] = CVAL(input); |
699 |
|
) |
700 |
|
break; |
701 |
|
case 8: /* Bicolour */ |
702 |
|
REPEAT |
703 |
|
( |
704 |
|
if (bicolour) |
705 |
|
{ |
706 |
|
line[x * 3] = colour2[0]; |
707 |
|
line[x * 3 + 1] = colour2[1]; |
708 |
|
line[x * 3 + 2] = colour2[2]; |
709 |
|
bicolour = False; |
710 |
|
} |
711 |
|
else |
712 |
|
{ |
713 |
|
line[x * 3] = colour1[0]; |
714 |
|
line[x * 3 + 1] = colour1[1]; |
715 |
|
line[x * 3 + 2] = colour1[2]; |
716 |
|
bicolour = True; |
717 |
|
count++; |
718 |
|
} |
719 |
|
) |
720 |
|
break; |
721 |
|
case 0xd: /* White */ |
722 |
|
REPEAT |
723 |
|
( |
724 |
|
line[x * 3] = 0xff; |
725 |
|
line[x * 3 + 1] = 0xff; |
726 |
|
line[x * 3 + 2] = 0xff; |
727 |
|
) |
728 |
|
break; |
729 |
|
case 0xe: /* Black */ |
730 |
|
REPEAT |
731 |
|
( |
732 |
|
line[x * 3] = 0; |
733 |
|
line[x * 3 + 1] = 0; |
734 |
|
line[x * 3 + 2] = 0; |
735 |
|
) |
736 |
|
break; |
737 |
|
default: |
738 |
|
unimpl("bitmap opcode 0x%x\n", opcode); |
739 |
|
return False; |
740 |
|
} |
741 |
|
} |
742 |
|
} |
743 |
|
return True; |
744 |
|
} |
745 |
|
|
746 |
|
#else |
747 |
|
|
748 |
static uint32 |
static uint32 |
749 |
cvalx(unsigned char **input, int Bpp) |
cvalx(uint8 **input, int Bpp) |
750 |
{ |
{ |
751 |
uint32 rv = 0; |
uint32 rv = 0; |
752 |
memcpy(&rv, *input, Bpp); |
memcpy(&rv, *input, Bpp); |
755 |
} |
} |
756 |
|
|
757 |
static void |
static void |
758 |
setli(unsigned char *input, int offset, uint32 value, int Bpp) |
setli(uint8 *input, int offset, uint32 value, int Bpp) |
759 |
{ |
{ |
760 |
input += offset * Bpp; |
input += offset * Bpp; |
761 |
memcpy(input, &value, Bpp); |
memcpy(input, &value, Bpp); |
762 |
} |
} |
763 |
|
|
764 |
static uint32 |
static uint32 |
765 |
getli(unsigned char *input, int offset, int Bpp) |
getli(uint8 *input, int offset, int Bpp) |
766 |
{ |
{ |
767 |
uint32 rv = 0; |
uint32 rv = 0; |
768 |
input += offset * Bpp; |
input += offset * Bpp; |
770 |
return rv; |
return rv; |
771 |
} |
} |
772 |
|
|
773 |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
static BOOL |
774 |
|
bitmap_decompressx(uint8 *output, int width, int height, uint8 *input, int size, int Bpp) |
|
#define REPEAT(statement) \ |
|
|
{ \ |
|
|
while((count & ~0x7) && ((x+8) < width)) \ |
|
|
UNROLL8( statement; count--; x++; ); \ |
|
|
\ |
|
|
while((count > 0) && (x < width)) { statement; count--; x++; } \ |
|
|
} |
|
|
|
|
|
#define MASK_UPDATE() \ |
|
|
{ \ |
|
|
mixmask <<= 1; \ |
|
|
if (mixmask == 0) \ |
|
|
{ \ |
|
|
mask = fom_mask ? fom_mask : CVAL(input); \ |
|
|
mixmask = 1; \ |
|
|
} \ |
|
|
} |
|
|
|
|
|
BOOL |
|
|
bitmap_decompress(unsigned char *output, int width, int height, unsigned char *input, int size, |
|
|
int Bpp) |
|
775 |
{ |
{ |
776 |
unsigned char *end = input + size; |
uint8 *end = input + size; |
777 |
unsigned char *prevline = NULL, *line = NULL; |
uint8 *prevline = NULL, *line = NULL; |
778 |
int opcode, count, offset, isfillormix, x = width; |
int opcode, count, offset, isfillormix, x = width; |
779 |
int lastopcode = -1, insertmix = False, bicolour = False; |
int lastopcode = -1, insertmix = False, bicolour = False; |
780 |
uint8 code; |
uint8 code; |
982 |
|
|
983 |
return True; |
return True; |
984 |
} |
} |
985 |
|
|
986 |
|
#endif |
987 |
|
|
988 |
|
/* main decompress function */ |
989 |
|
BOOL |
990 |
|
bitmap_decompress(uint8 * output, int width, int height, uint8 * input, int size, int Bpp) |
991 |
|
{ |
992 |
|
#ifdef BITMAP_SPEED_OVER_SIZE |
993 |
|
BOOL rv = False; |
994 |
|
switch (Bpp) |
995 |
|
{ |
996 |
|
case 1: |
997 |
|
rv = bitmap_decompress1(output, width, height, input, size); |
998 |
|
break; |
999 |
|
case 2: |
1000 |
|
rv = bitmap_decompress2(output, width, height, input, size); |
1001 |
|
break; |
1002 |
|
case 3: |
1003 |
|
rv = bitmap_decompress3(output, width, height, input, size); |
1004 |
|
break; |
1005 |
|
} |
1006 |
|
#else |
1007 |
|
BOOL rv; |
1008 |
|
rv = bitmap_decompressx(output, width, height, input, size, Bpp); |
1009 |
|
#endif |
1010 |
|
return rv; |
1011 |
|
} |
1012 |
|
|
1013 |
|
/* *INDENT-ON* */ |