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author | Daniel Stenberg <daniel@haxx.se> | 2002-05-14 14:40:51 +0000 |
---|---|---|
committer | Daniel Stenberg <daniel@haxx.se> | 2002-05-14 14:40:51 +0000 |
commit | 766a0ae4be6d2f91c328f91843ca6dfee63487d4 (patch) | |
tree | 9eeaec21e55a4f4589967f0f913571f1896c019a /uisimulator | |
parent | 48b3f5157aa9648f6ef9f58803d2b5a37e11d5c3 (diff) | |
download | rockbox-766a0ae4be6d2f91c328f91843ca6dfee63487d4.tar.gz rockbox-766a0ae4be6d2f91c328f91843ca6dfee63487d4.zip |
initial BMP image reader attempt, does not work yet
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@579 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'uisimulator')
-rw-r--r-- | uisimulator/bmp.c | 566 |
1 files changed, 566 insertions, 0 deletions
diff --git a/uisimulator/bmp.c b/uisimulator/bmp.c new file mode 100644 index 0000000000..5df003a537 --- /dev/null +++ b/uisimulator/bmp.c | |||
@@ -0,0 +1,566 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Linus Nielsen Feltzing | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | /********************************************************************* | ||
20 | * | ||
21 | * Converts BMP files to Rockbox bitmap format | ||
22 | * | ||
23 | * 1999-05-03 Linus Nielsen Feltzing | ||
24 | * | ||
25 | **********************************************/ | ||
26 | |||
27 | #include <stdio.h> | ||
28 | #include <stdlib.h> | ||
29 | #include <string.h> | ||
30 | #include <stdbool.h> | ||
31 | |||
32 | #include "file.h" | ||
33 | |||
34 | #ifdef __GNUC__ | ||
35 | #define STRUCT_PACKED __attribute__((packed)) | ||
36 | #endif | ||
37 | |||
38 | struct Fileheader | ||
39 | { | ||
40 | unsigned short Type; /* signature - 'BM' */ | ||
41 | unsigned long Size; /* file size in bytes */ | ||
42 | unsigned short Reserved1; /* 0 */ | ||
43 | unsigned short Reserved2; /* 0 */ | ||
44 | unsigned long OffBits; /* offset to bitmap */ | ||
45 | unsigned long StructSize; /* size of this struct (40) */ | ||
46 | unsigned long Width; /* bmap width in pixels */ | ||
47 | unsigned long Height; /* bmap height in pixels */ | ||
48 | unsigned short Planes; /* num planes - always 1 */ | ||
49 | unsigned short BitCount; /* bits per pixel */ | ||
50 | unsigned long Compression; /* compression flag */ | ||
51 | unsigned long SizeImage; /* image size in bytes */ | ||
52 | long XPelsPerMeter; /* horz resolution */ | ||
53 | long YPelsPerMeter; /* vert resolution */ | ||
54 | unsigned long ClrUsed; /* 0 -> color table size */ | ||
55 | unsigned long ClrImportant; /* important color count */ | ||
56 | } STRUCT_PACKED; | ||
57 | |||
58 | struct RGBQUAD | ||
59 | { | ||
60 | unsigned char rgbBlue; | ||
61 | unsigned char rgbGreen; | ||
62 | unsigned char rgbRed; | ||
63 | unsigned char rgbReserved; | ||
64 | } STRUCT_PACKED; | ||
65 | |||
66 | static struct Fileheader fh; | ||
67 | static unsigned char* bmp; | ||
68 | static struct RGBQUAD palette[2]; /* two colors only */ | ||
69 | |||
70 | static unsigned int bitmap_width, bitmap_height; | ||
71 | static unsigned char *bitmap; | ||
72 | |||
73 | #ifdef STANDALONE | ||
74 | static id_str[256]; | ||
75 | static bool compress = false; | ||
76 | static bool assembly = false; | ||
77 | static unsigned char* converted_bmp; | ||
78 | static unsigned char* compressed_bmp; | ||
79 | static unsigned int width; | ||
80 | static unsigned int converted_size; | ||
81 | static unsigned int compressed_size; | ||
82 | static unsigned int rounded_width; | ||
83 | #endif | ||
84 | |||
85 | #define readshort(x) (((x&0xff00)>>8)|((x&0x00ff)<<8)) | ||
86 | #define readlong(x) (((x&0xff000000)>>24)| \ | ||
87 | ((x&0x00ff0000)>>8) | \ | ||
88 | ((x&0x0000ff00)<<8) | \ | ||
89 | ((x&0x000000ff)<<24)) | ||
90 | |||
91 | |||
92 | /********************************************************************* | ||
93 | * read_bmp_file() | ||
94 | * | ||
95 | * Reads a monochrome BMP file and puts the data in a 1-pixel-per-byte | ||
96 | * array. Returns 0 on success. | ||
97 | * | ||
98 | **********************************************/ | ||
99 | int read_bmp_file(char* filename, | ||
100 | int *get_width, /* in pixels */ | ||
101 | int *get_height, /* in pixels */ | ||
102 | char *bitmap) | ||
103 | { | ||
104 | long PaddedWidth; | ||
105 | int background; | ||
106 | int fd = open(filename, O_RDONLY); | ||
107 | long size; | ||
108 | unsigned int row, col, byte, bit; | ||
109 | int l; | ||
110 | char *bmp; | ||
111 | int width; | ||
112 | int height; | ||
113 | |||
114 | if(fd == -1) | ||
115 | { | ||
116 | debugf("error - can't open '%s'\n", filename); | ||
117 | return 1; | ||
118 | } | ||
119 | else | ||
120 | { | ||
121 | if(read(fd, &fh, sizeof(struct Fileheader)) != | ||
122 | sizeof(struct Fileheader)) | ||
123 | { | ||
124 | debugf("error - can't Read Fileheader Stucture\n"); | ||
125 | return 2; | ||
126 | } | ||
127 | |||
128 | /* Exit if not monochrome */ | ||
129 | if(readshort(fh.BitCount) > 8) | ||
130 | { | ||
131 | debugf("error - Bitmap must be less than 8, got %d\n", | ||
132 | readshort(fh.BitCount)); | ||
133 | return 2; | ||
134 | } | ||
135 | |||
136 | /* Exit if too wide */ | ||
137 | if(readlong(fh.Width) > 112) | ||
138 | { | ||
139 | debugf("error - Bitmap is too wide (%d pixels, max is 112)\n", | ||
140 | readlong(fh.Width)); | ||
141 | return 3; | ||
142 | } | ||
143 | debugf("Bitmap is %d pixels wide\n", readlong(fh.Width)); | ||
144 | |||
145 | /* Exit if too high */ | ||
146 | if(readlong(fh.Height) > 64) | ||
147 | { | ||
148 | debugf("error - Bitmap is too high (%d pixels, max is 64)\n", | ||
149 | readlong(fh.Height)); | ||
150 | return 4; | ||
151 | } | ||
152 | debugf("Bitmap is %d pixels heigh\n", readlong(fh.Height)); | ||
153 | |||
154 | for(l=0;l < 2;l++) | ||
155 | { | ||
156 | if(read(fd, &palette[l],sizeof(struct RGBQUAD)) != | ||
157 | sizeof(struct RGBQUAD)) | ||
158 | { | ||
159 | debugf("error - Can't read bitmap's color palette\n"); | ||
160 | return 5; | ||
161 | } | ||
162 | } | ||
163 | /* pass the other palettes */ | ||
164 | lseek(fd, 254*sizeof(struct RGBQUAD), SEEK_CUR); | ||
165 | |||
166 | /* Try to guess the foreground and background colors. | ||
167 | We assume that the foreground color is the darkest. */ | ||
168 | if(((int)palette[0].rgbRed + | ||
169 | (int)palette[0].rgbGreen + | ||
170 | (int)palette[0].rgbBlue) > | ||
171 | ((int)palette[1].rgbRed + | ||
172 | (int)palette[1].rgbGreen + | ||
173 | (int)palette[1].rgbBlue)) | ||
174 | { | ||
175 | background = 0; | ||
176 | } | ||
177 | else | ||
178 | { | ||
179 | background = 1; | ||
180 | } | ||
181 | |||
182 | width = readlong(fh.Width)*readshort(fh.BitCount); | ||
183 | PaddedWidth = ((width+31)&(~0x1f))/8; | ||
184 | size = PaddedWidth*readlong(fh.Height); | ||
185 | |||
186 | bmp = (unsigned char *)malloc(size); | ||
187 | |||
188 | if(bmp == NULL) | ||
189 | { | ||
190 | debugf("error - Out of memory\n"); | ||
191 | return 6; | ||
192 | } | ||
193 | else | ||
194 | { | ||
195 | if(read(fd, (unsigned char*)bmp,(long)size) != size) { | ||
196 | debugf("error - Can't read image\n"); | ||
197 | return 7; | ||
198 | } | ||
199 | } | ||
200 | |||
201 | bitmap_height = readlong(fh.Height); | ||
202 | bitmap_width = readlong(fh.Width); | ||
203 | |||
204 | *get_width = bitmap_width; | ||
205 | *get_height = bitmap_height; | ||
206 | |||
207 | #if 0 | ||
208 | /* Now convert the bitmap into an array with 1 byte per pixel, | ||
209 | exactly the size of the image */ | ||
210 | for(row = 0;row < bitmap_height;row++) { | ||
211 | bit = 7; | ||
212 | byte = 0; | ||
213 | for(col = 0;col < bitmap_width;col++) { | ||
214 | if((bmp[(bitmap_height - row - 1) * PaddedWidth + byte] & | ||
215 | (1 << bit))) { | ||
216 | |||
217 | bitmap[ (row/8) * bitmap_width + col ] |= 1<<(row&7); | ||
218 | } | ||
219 | else { | ||
220 | bitmap[ (row/8) * bitmap_width + col ] &= ~ 1<<(row&7); | ||
221 | } | ||
222 | if(bit) { | ||
223 | bit--; | ||
224 | } | ||
225 | else { | ||
226 | bit = 7; | ||
227 | byte++; | ||
228 | } | ||
229 | } | ||
230 | } | ||
231 | #else | ||
232 | /* Now convert the bitmap into an array with 1 byte per pixel, | ||
233 | exactly the size of the image */ | ||
234 | for(row = 0;row < bitmap_height;row++) { | ||
235 | for(col = 0;col < bitmap_width;col++) { | ||
236 | if(bmp[(bitmap_height - row) * PaddedWidth]) { | ||
237 | bitmap[ (row/8) * bitmap_width + col ] |= 1<<(row&7); | ||
238 | } | ||
239 | else { | ||
240 | bitmap[ (row/8) * bitmap_width + col ] &= ~ 1<<(row&7); | ||
241 | } | ||
242 | } | ||
243 | } | ||
244 | |||
245 | #endif | ||
246 | } | ||
247 | return 0; /* success */ | ||
248 | } | ||
249 | |||
250 | #ifdef STANDALONE | ||
251 | |||
252 | /********************************************************************* | ||
253 | ** read_next_converted_byte() | ||
254 | ** | ||
255 | ** Reads the next 6-pixel chunk from the 1-byte-per-pixel array, | ||
256 | ** padding the last byte with zeros if the size is not divisible by 6. | ||
257 | **********************************************/ | ||
258 | unsigned char read_next_converted_byte(void) | ||
259 | { | ||
260 | unsigned char dest; | ||
261 | unsigned int i; | ||
262 | static unsigned int row = 0, col = 0; | ||
263 | |||
264 | dest = 0; | ||
265 | for(i = 0;i < 6 && col < bitmap_width;i++,col++) | ||
266 | { | ||
267 | if(bitmap[row * bitmap_width + col]) | ||
268 | { | ||
269 | dest |= (unsigned char)(1 << (5-i)); | ||
270 | } | ||
271 | } | ||
272 | |||
273 | if(col >= bitmap_width) | ||
274 | { | ||
275 | col = 0; | ||
276 | row++; | ||
277 | } | ||
278 | |||
279 | return dest; | ||
280 | } | ||
281 | |||
282 | /********************************************************************* | ||
283 | ** convert_image() | ||
284 | ** | ||
285 | ** Converts the 1-byte-per-pixel array into a 6-pixel-per-byte array, | ||
286 | ** i.e the BMP_FORMAT_VANILLA format. | ||
287 | **********************************************/ | ||
288 | void convert_image(void) | ||
289 | { | ||
290 | int newsize; | ||
291 | unsigned int row, col; | ||
292 | |||
293 | rounded_width = fh.Width/6 + ((fh.Width%6)?1:0); | ||
294 | newsize = rounded_width * fh.Height; | ||
295 | |||
296 | converted_bmp = (unsigned char *)malloc(newsize); | ||
297 | |||
298 | for(row = 0;row < fh.Height;row++) | ||
299 | { | ||
300 | for(col = 0;col < rounded_width;col++) | ||
301 | { | ||
302 | converted_bmp[row * rounded_width + col] = read_next_converted_byte(); | ||
303 | } | ||
304 | } | ||
305 | converted_size = rounded_width * fh.Height; | ||
306 | } | ||
307 | |||
308 | #define COMPRESSED_ZEROS_AHEAD 0x40 | ||
309 | #define COMPRESSED_ONES_AHEAD 0x80 | ||
310 | |||
311 | /********************************************************************* | ||
312 | ** compress_image() | ||
313 | ** | ||
314 | ** Compresses the BMP_FORMAT_VANILLA format with a simple RLE | ||
315 | ** algorithm. The output is in the BMP_FORMAT_RLE format. | ||
316 | **********************************************/ | ||
317 | void compress_image(void) | ||
318 | { | ||
319 | unsigned int i, j, count; | ||
320 | unsigned int index = 0; | ||
321 | unsigned char val; | ||
322 | |||
323 | compressed_bmp = (unsigned char *)malloc(converted_size); | ||
324 | |||
325 | for(i = 0;i < converted_size;i++) | ||
326 | { | ||
327 | val = converted_bmp[i]; | ||
328 | |||
329 | if(val == 0|| val == 0x3f) | ||
330 | { | ||
331 | count = 0; | ||
332 | while(count < 0x4000 && (i + count) < converted_size && | ||
333 | converted_bmp[i+count] == val) | ||
334 | { | ||
335 | count++; | ||
336 | } | ||
337 | if(count > 2) | ||
338 | { | ||
339 | compressed_bmp[index++] = (unsigned char) | ||
340 | (((val == 0)?COMPRESSED_ZEROS_AHEAD:COMPRESSED_ONES_AHEAD) | | ||
341 | (count >> 8)); | ||
342 | compressed_bmp[index++] = (unsigned char)(count & 0xff); | ||
343 | } | ||
344 | else | ||
345 | { | ||
346 | for(j = 0;j < count;j++) | ||
347 | { | ||
348 | compressed_bmp[index++] = val; | ||
349 | } | ||
350 | } | ||
351 | i += count - 1; | ||
352 | } | ||
353 | else | ||
354 | { | ||
355 | compressed_bmp[index++] = val; | ||
356 | } | ||
357 | } | ||
358 | |||
359 | compressed_size = index; | ||
360 | } | ||
361 | |||
362 | /********************************************************************* | ||
363 | ** generate_c_source() | ||
364 | ** | ||
365 | ** Outputs a C source code with the converted/compressed bitmap in | ||
366 | ** an array, accompanied by some #define's | ||
367 | **********************************************/ | ||
368 | void generate_c_source(char *id, BOOL compressed) | ||
369 | { | ||
370 | FILE *f; | ||
371 | unsigned int i; | ||
372 | unsigned int size; | ||
373 | unsigned char *bmp; | ||
374 | |||
375 | size = compressed?compressed_size:converted_size; | ||
376 | bmp = compressed?compressed_bmp:converted_bmp; | ||
377 | |||
378 | f = stdout; | ||
379 | |||
380 | fprintf(f, "#define %s_WIDTH %d\n", id, rounded_width * 6); | ||
381 | fprintf(f, "#define %s_HEIGHT %d\n", id, fh.Height); | ||
382 | fprintf(f, "#define %s_SIZE %d\n", id, size + 6); | ||
383 | if(compressed) | ||
384 | { | ||
385 | fprintf(f, "#define %s_ORIGINAL_SIZE %d\n", id, converted_size); | ||
386 | } | ||
387 | fprintf(f, "#define %s_FORMAT %s\n", id, | ||
388 | compressed?"BMP_FORMAT_RLE":"BMP_FORMAT_VANILLA"); | ||
389 | fprintf(f, "\nconst unsigned char bmpdata_%s[] = {", id); | ||
390 | |||
391 | /* Header */ | ||
392 | fprintf(f, "\n %s, 0x%02x,0x%02x,0x%02x,0x%02x,0x%02x,", | ||
393 | compressed?"BMP_FORMAT_RLE":"BMP_FORMAT_VANILLA", | ||
394 | size >> 8, size & 0xff, 2, fh.Height, rounded_width * 6); | ||
395 | |||
396 | for(i = 0;i < size;i++) | ||
397 | { | ||
398 | if(i % 10 == 0) | ||
399 | { | ||
400 | fprintf(f, "\n "); | ||
401 | } | ||
402 | fprintf(f, "0x%02x,", bmp[i]); | ||
403 | } | ||
404 | fprintf(f, "\n};"); | ||
405 | } | ||
406 | |||
407 | /********************************************************************* | ||
408 | ** generate_asm_source() | ||
409 | ** | ||
410 | ** Outputs an ASM source code with the converted/compressed bitmap in | ||
411 | ** an array, the first 2 bytes describing the X and Y size | ||
412 | **********************************************/ | ||
413 | void generate_asm_source(char *id, BOOL compressed) | ||
414 | { | ||
415 | FILE *f; | ||
416 | unsigned int i; | ||
417 | unsigned int size; | ||
418 | unsigned char *bmp; | ||
419 | |||
420 | size = compressed?compressed_size:converted_size; | ||
421 | bmp = compressed?compressed_bmp:converted_bmp; | ||
422 | |||
423 | f = stdout; | ||
424 | |||
425 | fprintf(f, "bmpdata_%s:\n", id); | ||
426 | /* Header */ | ||
427 | fprintf(f, "\n db %s, %.2xh,%.2xh,%.2xh,%.2xh,%.2xh,", | ||
428 | compressed?"1":"0", | ||
429 | size >> 8, size & 0xff, 2, fh.Height, rounded_width * 6); | ||
430 | |||
431 | for(i = 0;i < size;i++) | ||
432 | { | ||
433 | if(i % 10 == 0) | ||
434 | { | ||
435 | fprintf(f, "\n db "); | ||
436 | } | ||
437 | fprintf(f, "%.2xh,", bmp[i]); | ||
438 | } | ||
439 | fprintf(f, "\n"); | ||
440 | } | ||
441 | |||
442 | void print_usage(void) | ||
443 | { | ||
444 | printf("bmp2mt - Converts BMP files to MT Pro source code format\n"); | ||
445 | printf("build date: " __DATE__ "\n\n"); | ||
446 | printf("Usage: %s [-i <id>] [-c] [-a] <bitmap file>\n" | ||
447 | "-i <id> Bitmap ID (default is filename without extension)\n" | ||
448 | "-c Compress (BMP_FORMAT_RLE)\n" | ||
449 | "-f Frexx Format!!!\n" | ||
450 | "-a Assembly format source code\n", APPLICATION_NAME); | ||
451 | } | ||
452 | |||
453 | #pragma argsused | ||
454 | int main(int argc, char **argv) | ||
455 | { | ||
456 | char *bmp_filename = NULL; | ||
457 | char *id = NULL; | ||
458 | char errstr[80]; | ||
459 | int i; | ||
460 | |||
461 | for(i = 1;i < argc;i++) | ||
462 | { | ||
463 | if(argv[i][0] == '-') | ||
464 | { | ||
465 | switch(argv[i][1]) | ||
466 | { | ||
467 | case 'i': /* ID */ | ||
468 | if(argv[i][2]) | ||
469 | { | ||
470 | id = &argv[i][2]; | ||
471 | } | ||
472 | else if(argc > i+1) | ||
473 | { | ||
474 | id = argv[i+1]; | ||
475 | i++; | ||
476 | } | ||
477 | else | ||
478 | { | ||
479 | print_usage(); | ||
480 | exit(1); | ||
481 | } | ||
482 | break; | ||
483 | |||
484 | case 'c': /* Compressed */ | ||
485 | compress = true; | ||
486 | break; | ||
487 | |||
488 | case 'a': /* Assembly */ | ||
489 | assembly = true; | ||
490 | break; | ||
491 | |||
492 | default: | ||
493 | print_usage(); | ||
494 | exit(1); | ||
495 | break; | ||
496 | } | ||
497 | } | ||
498 | else | ||
499 | { | ||
500 | if(!bmp_filename) | ||
501 | { | ||
502 | bmp_filename = argv[i]; | ||
503 | } | ||
504 | else | ||
505 | { | ||
506 | print_usage(); | ||
507 | exit(1); | ||
508 | } | ||
509 | } | ||
510 | } | ||
511 | |||
512 | if(!bmp_filename) | ||
513 | { | ||
514 | print_usage(); | ||
515 | exit(1); | ||
516 | } | ||
517 | |||
518 | if(!id) | ||
519 | { | ||
520 | id = strdup(bmp_filename); | ||
521 | |||
522 | for(i = 0;id[i];i++) | ||
523 | { | ||
524 | if(id[i] == ' ') | ||
525 | { | ||
526 | id[i] = '_'; | ||
527 | } | ||
528 | else if(id[i] == '.') | ||
529 | { | ||
530 | id[i] = '\0'; | ||
531 | break; | ||
532 | } | ||
533 | else | ||
534 | { | ||
535 | id[i] = (char)toupper(id[i]); | ||
536 | } | ||
537 | } | ||
538 | } | ||
539 | |||
540 | read_bmp_file(bmp_filename); | ||
541 | convert_image(); | ||
542 | if(fh.Width % 6) | ||
543 | { | ||
544 | |||
545 | sprintf(errstr, "warning - width is not divisible by 6 (%d), " | ||
546 | "padding with zeros to %d\n", fh.Width, rounded_width*6); | ||
547 | print_error(errstr, 0); | ||
548 | } | ||
549 | |||
550 | if(compress) | ||
551 | { | ||
552 | compress_image(); | ||
553 | } | ||
554 | |||
555 | if(assembly) | ||
556 | { | ||
557 | generate_asm_source(id, compress); | ||
558 | } | ||
559 | else | ||
560 | { | ||
561 | generate_c_source(id, compress); | ||
562 | } | ||
563 | return 0; | ||
564 | } | ||
565 | |||
566 | #endif | ||