Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 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 <sys/types.h> |
| 33 | #include <sys/stat.h> |
| 34 | #include <fcntl.h> |
| 35 | |
| 36 | #define debugf printf |
| 37 | |
| 38 | #ifdef __GNUC__ |
| 39 | #define STRUCT_PACKED __attribute__((packed)) |
| 40 | #else |
| 41 | #define STRUCT_PACKED |
| 42 | #pragma pack (push, 2) |
| 43 | #endif |
| 44 | |
| 45 | struct Fileheader |
| 46 | { |
| 47 | unsigned short Type; /* signature - 'BM' */ |
| 48 | unsigned long Size; /* file size in bytes */ |
| 49 | unsigned short Reserved1; /* 0 */ |
| 50 | unsigned short Reserved2; /* 0 */ |
| 51 | unsigned long OffBits; /* offset to bitmap */ |
| 52 | unsigned long StructSize; /* size of this struct (40) */ |
| 53 | unsigned long Width; /* bmap width in pixels */ |
| 54 | unsigned long Height; /* bmap height in pixels */ |
| 55 | unsigned short Planes; /* num planes - always 1 */ |
| 56 | unsigned short BitCount; /* bits per pixel */ |
| 57 | unsigned long Compression; /* compression flag */ |
| 58 | unsigned long SizeImage; /* image size in bytes */ |
| 59 | long XPelsPerMeter; /* horz resolution */ |
| 60 | long YPelsPerMeter; /* vert resolution */ |
| 61 | unsigned long ClrUsed; /* 0 -> color table size */ |
| 62 | unsigned long ClrImportant; /* important color count */ |
| 63 | } STRUCT_PACKED; |
| 64 | |
| 65 | struct RGBQUAD |
| 66 | { |
| 67 | unsigned char rgbBlue; |
| 68 | unsigned char rgbGreen; |
| 69 | unsigned char rgbRed; |
| 70 | unsigned char rgbReserved; |
| 71 | } STRUCT_PACKED; |
| 72 | |
| 73 | #ifdef LITTLE_ENDIAN |
| 74 | #define readshort(x) x |
| 75 | #define readlong(x) x |
| 76 | #else |
| 77 | |
| 78 | #define readshort(x) (((x&0xff00)>>8)|((x&0x00ff)<<8)) |
| 79 | #define readlong(x) (((x&0xff000000)>>24)| \ |
| 80 | ((x&0x00ff0000)>>8) | \ |
| 81 | ((x&0x0000ff00)<<8) | \ |
| 82 | ((x&0x000000ff)<<24)) |
| 83 | #endif |
| 84 | |
| 85 | /********************************************************************* |
| 86 | * read_bmp_file() |
| 87 | * |
| 88 | * Reads a 8bit BMP file and puts the data in a 1-pixel-per-byte |
| 89 | * array. Returns 0 on success. |
| 90 | * |
| 91 | *********************************************************************/ |
| 92 | int read_bmp_file(char* filename, |
| 93 | int *get_width, /* in pixels */ |
| 94 | int *get_height, /* in pixels */ |
| 95 | char **bitmap) |
| 96 | { |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 97 | struct Fileheader fh; |
| 98 | struct RGBQUAD palette[2]; /* two colors only */ |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 99 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 100 | unsigned int bitmap_width, bitmap_height; |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 101 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 102 | long PaddedWidth; |
| 103 | int background; |
| 104 | int fd = open(filename, O_RDONLY); |
| 105 | long size; |
| 106 | unsigned int row, col; |
| 107 | int l; |
| 108 | unsigned char *bmp; |
| 109 | int width; |
| 110 | int depth; |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 111 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 112 | if(fd == -1) |
| 113 | { |
| 114 | debugf("error - can't open '%s'\n", filename); |
| 115 | return 1; |
| 116 | } |
| 117 | else |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 118 | { |
| 119 | if(read(fd, &fh, sizeof(struct Fileheader)) != |
| 120 | sizeof(struct Fileheader)) |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 121 | { |
| 122 | debugf("error - can't Read Fileheader Stucture\n"); |
| 123 | close(fd); |
| 124 | return 2; |
| 125 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 126 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 127 | /* Exit if more than 8 bits */ |
| 128 | depth = readshort(fh.BitCount); |
| 129 | if(depth > 8) |
| 130 | { |
| 131 | debugf("error - Bitmap uses more than 8 bit depth, got %d\n", |
| 132 | depth); |
| 133 | close(fd); |
| 134 | return 2; |
| 135 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 136 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 137 | /* Exit if too wide */ |
| 138 | if(readlong(fh.Width) > 112) |
| 139 | { |
| 140 | debugf("error - Bitmap is too wide (%d pixels, max is 112)\n", |
| 141 | readlong(fh.Width)); |
| 142 | close(fd); |
| 143 | return 3; |
| 144 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 145 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 146 | /* Exit if too high */ |
| 147 | if(readlong(fh.Height) > 64) |
| 148 | { |
| 149 | debugf("error - Bitmap is too high (%d pixels, max is 64)\n", |
| 150 | readlong(fh.Height)); |
| 151 | close(fd); |
| 152 | return 4; |
| 153 | } |
| 154 | |
| 155 | for(l=0;l < 2;l++) |
| 156 | { |
| 157 | if(read(fd, &palette[l],sizeof(struct RGBQUAD)) != |
| 158 | sizeof(struct RGBQUAD)) |
| 159 | { |
| 160 | debugf("error - Can't read bitmap's color palette\n"); |
| 161 | close(fd); |
| 162 | return 5; |
| 163 | } |
| 164 | } |
| 165 | if(depth == 8 ) { |
| 166 | /* pass the other palettes */ |
| 167 | lseek(fd, 254*sizeof(struct RGBQUAD), SEEK_CUR); |
| 168 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 169 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 170 | /* Try to guess the foreground and background colors. |
| 171 | We assume that the foreground color is the darkest. */ |
| 172 | if(((int)palette[0].rgbRed + |
| 173 | (int)palette[0].rgbGreen + |
| 174 | (int)palette[0].rgbBlue) > |
| 175 | ((int)palette[1].rgbRed + |
| 176 | (int)palette[1].rgbGreen + |
| 177 | (int)palette[1].rgbBlue)) |
| 178 | { |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 179 | background = 0; |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 180 | } |
| 181 | else |
| 182 | { |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 183 | background = 1; |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 184 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 185 | |
| 186 | width = readlong(fh.Width); |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 187 | |
| 188 | if(depth == 8) |
| 189 | PaddedWidth = ((width+3)&(~0x3)); /* aligned 4-bytes boundaries */ |
| 190 | else |
| 191 | PaddedWidth = ((width+31)&(~0x1f))/8; |
| 192 | |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 193 | size = PaddedWidth*readlong(fh.Height); |
| 194 | |
| 195 | bmp = (unsigned char *)malloc(size); |
| 196 | *bitmap = (unsigned char *)malloc(size); |
| 197 | |
| 198 | if(bmp == NULL) |
| 199 | { |
| 200 | debugf("error - Out of memory\n"); |
| 201 | close(fd); |
| 202 | return 6; |
| 203 | } |
| 204 | else |
| 205 | { |
| 206 | if(read(fd, (unsigned char*)bmp,(long)size) != size) { |
| 207 | debugf("error - Can't read image\n"); |
| 208 | close(fd); |
| 209 | return 7; |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | bitmap_height = readlong(fh.Height); |
| 214 | bitmap_width = readlong(fh.Width); |
| 215 | |
| 216 | *get_width = bitmap_width; |
| 217 | *get_height = bitmap_height; |
| 218 | |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 219 | if(depth == 8) |
| 220 | { |
| 221 | /* Now convert the bitmap into an array with 1 byte per pixel, |
| 222 | exactly the size of the image */ |
| 223 | for(row = 0;row < bitmap_height;row++) { |
| 224 | for(col = 0;col < bitmap_width;col++) { |
| 225 | if(bmp[(bitmap_height-1 -row) * PaddedWidth + col]) { |
| 226 | (*bitmap)[ (row/8) * bitmap_width + col ] &= |
| 227 | ~ (1<<(row&7)); |
| 228 | } |
| 229 | else { |
| 230 | (*bitmap)[ (row/8) * bitmap_width + col ] |= |
| 231 | 1<<(row&7); |
| 232 | } |
| 233 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 234 | } |
Daniel Stenberg | 793ca18 | 2002-08-21 12:11:51 +0000 | [diff] [blame] | 235 | } |
| 236 | else |
| 237 | { |
| 238 | int bit; |
| 239 | int byte; |
| 240 | /* monocrome BMP conversion uses 8 pixels per byte */ |
| 241 | for(row = 0; row < bitmap_height; row++) { |
| 242 | bit = 7; |
| 243 | byte = 0; |
| 244 | for(col = 0;col < bitmap_width;col++) { |
| 245 | if((bmp[(bitmap_height - row - 1) * PaddedWidth + byte] & |
| 246 | (1 << bit))) { |
| 247 | (*bitmap)[(row/8) * bitmap_width + col ] &= |
| 248 | ~(1<<(row&7)); |
| 249 | } |
| 250 | else { |
| 251 | (*bitmap)[(row/8) * bitmap_width + col ] |= |
| 252 | 1<<(row&7); |
| 253 | } |
| 254 | if(bit) { |
| 255 | bit--; |
| 256 | } |
| 257 | else { |
| 258 | bit = 7; |
| 259 | byte++; |
| 260 | } |
| 261 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 262 | } |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 263 | } |
| 264 | |
| 265 | free(bmp); |
| 266 | |
| 267 | } |
| 268 | close(fd); |
| 269 | return 0; /* success */ |
| 270 | } |
| 271 | |
| 272 | /********************************************************************* |
| 273 | ** generate_c_source() |
| 274 | ** |
| 275 | ** Outputs a C source code with the bitmap in an array, accompanied by |
| 276 | ** some #define's |
| 277 | **********************************************************************/ |
| 278 | void generate_c_source(char *id, int width, int height, unsigned char *bitmap) |
| 279 | { |
| 280 | FILE *f; |
| 281 | unsigned int i, a, eline; |
| 282 | |
| 283 | f = stdout; |
| 284 | |
Daniel Stenberg | 8c78975 | 2002-08-19 08:04:48 +0000 | [diff] [blame] | 285 | if(!id || !id[0]) |
| 286 | id = "bitmap"; |
| 287 | |
| 288 | fprintf(f, |
| 289 | "#define BMPHEIGHT_%s %d" |
| 290 | "\n#define BMPWIDTH_%s %d" |
| 291 | "\nconst unsigned char %s[] = {\n", |
| 292 | id, height, id, width, id ); |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 293 | |
| 294 | for(i=0, eline=0; i< height; i+=8, eline++) { |
Daniel Stenberg | e1fbb12 | 2002-08-21 16:34:41 +0000 | [diff] [blame] | 295 | for (a=0; a<width; a++) |
| 296 | fprintf(f, "0x%02x,%c", bitmap[eline*width + a], |
| 297 | (a+1)%13?' ':'\n'); |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 298 | fprintf(f, "\n"); |
| 299 | } |
| 300 | |
| 301 | |
Mats Lidell | 4b12d88 | 2002-08-21 10:45:17 +0000 | [diff] [blame] | 302 | fprintf(f, "\n};\n"); |
Mats Lidell | 8a700fe | 2002-08-16 14:02:48 +0000 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | |
| 306 | /********************************************************************* |
| 307 | ** generate_ascii() |
| 308 | ** |
| 309 | ** Outputs an ascii picture of the bitmap |
| 310 | **********************************************************************/ |
| 311 | void generate_ascii(int width, int height, unsigned char *bitmap) |
| 312 | { |
| 313 | FILE *f; |
| 314 | unsigned int i, eline; |
| 315 | |
| 316 | f = stdout; |
| 317 | |
| 318 | /* for screen output debugging */ |
| 319 | for(i=0, eline=0; i< height; i+=8, eline++) { |
| 320 | unsigned int x, y; |
| 321 | for(y=0; y<8 && (i+y < height); y++) { |
| 322 | for(x=0; x < width; x++) { |
| 323 | |
| 324 | if(bitmap[eline*width + x] & (1<<y)) { |
| 325 | fprintf(f, "*"); |
| 326 | } |
| 327 | else |
| 328 | fprintf(f, " "); |
| 329 | } |
| 330 | fprintf(f, "\n"); |
| 331 | } |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | void print_usage(void) |
| 336 | { |
| 337 | printf("Usage: %s [-i <id>] [-a] <bitmap file>\n" |
| 338 | "\t-i <id> Bitmap name (default is filename without extension)\n" |
| 339 | "\t-a Show ascii picture of bitmap\n", |
| 340 | APPLICATION_NAME); |
| 341 | printf("build date: " __DATE__ "\n\n"); |
| 342 | } |
| 343 | |
| 344 | int main(int argc, char **argv) |
| 345 | { |
| 346 | char *bmp_filename = NULL; |
| 347 | char *id = NULL; |
| 348 | int i; |
| 349 | int height, width; |
| 350 | int ascii = false; |
| 351 | char* bitmap = NULL; |
| 352 | |
| 353 | |
| 354 | for(i = 1;i < argc;i++) |
| 355 | { |
| 356 | if(argv[i][0] == '-') |
| 357 | { |
| 358 | switch(argv[i][1]) |
| 359 | { |
| 360 | case 'i': /* ID */ |
| 361 | if(argv[i][2]) |
| 362 | { |
| 363 | id = &argv[i][2]; |
| 364 | } |
| 365 | else if(argc > i+1) |
| 366 | { |
| 367 | id = argv[i+1]; |
| 368 | i++; |
| 369 | } |
| 370 | else |
| 371 | { |
| 372 | print_usage(); |
| 373 | exit(1); |
| 374 | } |
| 375 | break; |
| 376 | |
| 377 | case 'a': /* Assembly */ |
| 378 | ascii = true; |
| 379 | break; |
| 380 | |
| 381 | default: |
| 382 | print_usage(); |
| 383 | exit(1); |
| 384 | break; |
| 385 | } |
| 386 | } |
| 387 | else |
| 388 | { |
| 389 | if(!bmp_filename) |
| 390 | { |
| 391 | bmp_filename = argv[i]; |
| 392 | } |
| 393 | else |
| 394 | { |
| 395 | print_usage(); |
| 396 | exit(1); |
| 397 | } |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | if (!bmp_filename) |
| 402 | { |
| 403 | print_usage(); |
| 404 | exit(1); |
| 405 | } |
| 406 | |
| 407 | if (!id) |
| 408 | { |
| 409 | id = strdup(bmp_filename); |
| 410 | for (i = 0; id[i]; i++) if (id[i] == '.') id[i] = '\0'; |
| 411 | } |
| 412 | |
| 413 | if (read_bmp_file(bmp_filename, &width, &height, &bitmap)) |
| 414 | return 0; |
| 415 | |
| 416 | if (ascii) |
| 417 | generate_ascii(width, height, bitmap); |
| 418 | else |
| 419 | generate_c_source(id, width, height, bitmap); |
| 420 | |
| 421 | return 0; |
| 422 | } |