1 /* 2 ** Easylogo TGA->header converter 3 ** ============================== 4 ** (C) 2000 by Paolo Scaffardi (arsenio@tin.it) 5 ** AIRVENT SAM s.p.a - RIMINI(ITALY) 6 ** (C) 2007-2008 Mike Frysinger <vapier@gentoo.org> 7 ** 8 ** This is still under construction! 9 */ 10 11 #include <errno.h> 12 #include <getopt.h> 13 #include <stdbool.h> 14 #include <stdio.h> 15 #include <stdlib.h> 16 #include <string.h> 17 #include <unistd.h> 18 #include <sys/stat.h> 19 20 #pragma pack(1) 21 22 /*#define ENABLE_ASCII_BANNERS */ 23 24 typedef struct { 25 unsigned char id; 26 unsigned char ColorMapType; 27 unsigned char ImageTypeCode; 28 unsigned short ColorMapOrigin; 29 unsigned short ColorMapLenght; 30 unsigned char ColorMapEntrySize; 31 unsigned short ImageXOrigin; 32 unsigned short ImageYOrigin; 33 unsigned short ImageWidth; 34 unsigned short ImageHeight; 35 unsigned char ImagePixelSize; 36 unsigned char ImageDescriptorByte; 37 } tga_header_t; 38 39 typedef struct { 40 unsigned char r, g, b; 41 } rgb_t; 42 43 typedef struct { 44 unsigned char b, g, r; 45 } bgr_t; 46 47 typedef struct { 48 unsigned char Cb, y1, Cr, y2; 49 } yuyv_t; 50 51 typedef struct { 52 void *data, *palette; 53 int width, height, pixels, bpp, pixel_size, size, palette_size, yuyv; 54 } image_t; 55 56 void *xmalloc (size_t size) 57 { 58 void *ret = malloc (size); 59 if (!ret) { 60 fprintf (stderr, "\nerror: malloc(%zu) failed: %s", 61 size, strerror(errno)); 62 exit (1); 63 } 64 return ret; 65 } 66 67 void StringUpperCase (char *str) 68 { 69 int count = strlen (str); 70 char c; 71 72 while (count--) { 73 c = *str; 74 if ((c >= 'a') && (c <= 'z')) 75 *str = 'A' + (c - 'a'); 76 str++; 77 } 78 } 79 80 void StringLowerCase (char *str) 81 { 82 int count = strlen (str); 83 char c; 84 85 while (count--) { 86 c = *str; 87 if ((c >= 'A') && (c <= 'Z')) 88 *str = 'a' + (c - 'A'); 89 str++; 90 } 91 } 92 void pixel_rgb_to_yuyv (rgb_t * rgb_pixel, yuyv_t * yuyv_pixel) 93 { 94 unsigned int pR, pG, pB; 95 96 /* Transform (0-255) components to (0-100) */ 97 pR = rgb_pixel->r * 100 / 255; 98 pG = rgb_pixel->g * 100 / 255; 99 pB = rgb_pixel->b * 100 / 255; 100 101 /* Calculate YUV values (0-255) from RGB beetween 0-100 */ 102 yuyv_pixel->y1 = yuyv_pixel->y2 = 209 * (pR + pG + pB) / 300 + 16; 103 yuyv_pixel->Cb = pB - (pR / 4) - (pG * 3 / 4) + 128; 104 yuyv_pixel->Cr = pR - (pG * 3 / 4) - (pB / 4) + 128; 105 106 return; 107 } 108 109 void printlogo_rgb (rgb_t * data, int w, int h) 110 { 111 int x, y; 112 113 for (y = 0; y < h; y++) { 114 for (x = 0; x < w; x++, data++) 115 if ((data->r < 116 30) /*&&(data->g == 0)&&(data->b == 0) */ ) 117 printf (" "); 118 else 119 printf ("X"); 120 printf ("\n"); 121 } 122 } 123 124 void printlogo_yuyv (unsigned short *data, int w, int h) 125 { 126 int x, y; 127 128 for (y = 0; y < h; y++) { 129 for (x = 0; x < w; x++, data++) 130 if (*data == 0x1080) /* Because of inverted on i386! */ 131 printf (" "); 132 else 133 printf ("X"); 134 printf ("\n"); 135 } 136 } 137 138 static inline unsigned short le16_to_cpu (unsigned short val) 139 { 140 union { 141 unsigned char pval[2]; 142 unsigned short val; 143 } swapped; 144 145 swapped.val = val; 146 return (swapped.pval[1] << 8) + swapped.pval[0]; 147 } 148 149 int image_load_tga (image_t * image, char *filename) 150 { 151 FILE *file; 152 tga_header_t header; 153 int i; 154 unsigned char app; 155 rgb_t *p; 156 157 if ((file = fopen (filename, "rb")) == NULL) 158 return -1; 159 160 fread (&header, sizeof (header), 1, file); 161 162 /* byte swap: tga is little endian, host is ??? */ 163 header.ColorMapOrigin = le16_to_cpu (header.ColorMapOrigin); 164 header.ColorMapLenght = le16_to_cpu (header.ColorMapLenght); 165 header.ImageXOrigin = le16_to_cpu (header.ImageXOrigin); 166 header.ImageYOrigin = le16_to_cpu (header.ImageYOrigin); 167 header.ImageWidth = le16_to_cpu (header.ImageWidth); 168 header.ImageHeight = le16_to_cpu (header.ImageHeight); 169 170 image->width = header.ImageWidth; 171 image->height = header.ImageHeight; 172 173 switch (header.ImageTypeCode) { 174 case 2: /* Uncompressed RGB */ 175 image->yuyv = 0; 176 image->palette_size = 0; 177 image->palette = NULL; 178 break; 179 180 default: 181 printf ("Format not supported!\n"); 182 return -1; 183 } 184 185 image->bpp = header.ImagePixelSize; 186 image->pixel_size = ((image->bpp - 1) / 8) + 1; 187 image->pixels = image->width * image->height; 188 image->size = image->pixels * image->pixel_size; 189 image->data = xmalloc (image->size); 190 191 if (image->bpp != 24) { 192 printf ("Bpp not supported: %d!\n", image->bpp); 193 return -1; 194 } 195 196 fread (image->data, image->size, 1, file); 197 198 /* Swapping R and B values */ 199 200 p = image->data; 201 for (i = 0; i < image->pixels; i++, p++) { 202 app = p->r; 203 p->r = p->b; 204 p->b = app; 205 } 206 207 /* Swapping image */ 208 209 if (!(header.ImageDescriptorByte & 0x20)) { 210 unsigned char *temp = xmalloc (image->size); 211 int linesize = image->pixel_size * image->width; 212 void *dest = image->data, 213 *source = temp + image->size - linesize; 214 215 printf ("S"); 216 if (temp == NULL) { 217 printf ("Cannot alloc temp buffer!\n"); 218 return -1; 219 } 220 221 memcpy (temp, image->data, image->size); 222 for (i = 0; i < image->height; 223 i++, dest += linesize, source -= linesize) 224 memcpy (dest, source, linesize); 225 226 free (temp); 227 } 228 #ifdef ENABLE_ASCII_BANNERS 229 printlogo_rgb (image->data, image->width, image->height); 230 #endif 231 232 fclose (file); 233 return 0; 234 } 235 236 void image_free (image_t * image) 237 { 238 free (image->data); 239 free (image->palette); 240 } 241 242 int image_rgb_to_yuyv (image_t * rgb_image, image_t * yuyv_image) 243 { 244 rgb_t *rgb_ptr = (rgb_t *) rgb_image->data; 245 yuyv_t yuyv; 246 unsigned short *dest; 247 int count = 0; 248 249 yuyv_image->pixel_size = 2; 250 yuyv_image->bpp = 16; 251 yuyv_image->yuyv = 1; 252 yuyv_image->width = rgb_image->width; 253 yuyv_image->height = rgb_image->height; 254 yuyv_image->pixels = yuyv_image->width * yuyv_image->height; 255 yuyv_image->size = yuyv_image->pixels * yuyv_image->pixel_size; 256 dest = (unsigned short *) (yuyv_image->data = 257 xmalloc (yuyv_image->size)); 258 yuyv_image->palette = 0; 259 yuyv_image->palette_size = 0; 260 261 while ((count++) < rgb_image->pixels) { 262 pixel_rgb_to_yuyv (rgb_ptr++, &yuyv); 263 264 if ((count & 1) == 0) /* Was == 0 */ 265 memcpy (dest, ((void *) &yuyv) + 2, sizeof (short)); 266 else 267 memcpy (dest, (void *) &yuyv, sizeof (short)); 268 269 dest++; 270 } 271 272 #ifdef ENABLE_ASCII_BANNERS 273 printlogo_yuyv (yuyv_image->data, yuyv_image->width, 274 yuyv_image->height); 275 #endif 276 return 0; 277 } 278 279 int image_rgb888_to_rgb565(image_t *rgb888_image, image_t *rgb565_image) 280 { 281 rgb_t *rgb_ptr = (rgb_t *) rgb888_image->data; 282 unsigned short *dest; 283 int count = 0; 284 285 rgb565_image->pixel_size = 2; 286 rgb565_image->bpp = 16; 287 rgb565_image->yuyv = 0; 288 rgb565_image->width = rgb888_image->width; 289 rgb565_image->height = rgb888_image->height; 290 rgb565_image->pixels = rgb565_image->width * rgb565_image->height; 291 rgb565_image->size = rgb565_image->pixels * rgb565_image->pixel_size; 292 dest = (unsigned short *) (rgb565_image->data = 293 xmalloc(rgb565_image->size)); 294 rgb565_image->palette = 0; 295 rgb565_image->palette_size = 0; 296 297 while ((count++) < rgb888_image->pixels) { 298 299 *dest++ = ((rgb_ptr->b & 0xF8) << 8) | 300 ((rgb_ptr->g & 0xFC) << 3) | 301 (rgb_ptr->r >> 3); 302 rgb_ptr++; 303 } 304 305 return 0; 306 } 307 308 int use_gzip = 0; 309 310 int image_save_header (image_t * image, char *filename, char *varname) 311 { 312 FILE *file = fopen (filename, "w"); 313 char app[256], str[256] = "", def_name[64]; 314 int count = image->size, col = 0; 315 unsigned char *dataptr = image->data; 316 317 if (file == NULL) 318 return -1; 319 320 /* Author information */ 321 fprintf (file, 322 "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n *\n"); 323 fprintf (file, 324 " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n", 325 varname); 326 fprintf (file, 327 " * Where:\t'screen'\tis the pointer to the frame buffer\n"); 328 fprintf (file, " *\t\t'width'\tis the screen width\n"); 329 fprintf (file, " *\t\t'x'\t\tis the horizontal position\n"); 330 fprintf (file, " *\t\t'y'\t\tis the vertical position\n */\n\n"); 331 332 /* gzip compress */ 333 if (use_gzip & 0x1) { 334 const char *errstr = NULL; 335 unsigned char *compressed; 336 struct stat st; 337 FILE *gz; 338 char *gzfilename = xmalloc(strlen (filename) + 20); 339 char *gzcmd = xmalloc(strlen (filename) + 20); 340 341 sprintf (gzfilename, "%s.gz", filename); 342 sprintf (gzcmd, "gzip > %s", gzfilename); 343 gz = popen (gzcmd, "w"); 344 if (!gz) { 345 errstr = "\nerror: popen() failed"; 346 goto done; 347 } 348 if (fwrite (image->data, image->size, 1, gz) != 1) { 349 errstr = "\nerror: writing data to gzip failed"; 350 goto done; 351 } 352 if (pclose (gz)) { 353 errstr = "\nerror: gzip process failed"; 354 goto done; 355 } 356 357 gz = fopen (gzfilename, "r"); 358 if (!gz) { 359 errstr = "\nerror: open() on gzip data failed"; 360 goto done; 361 } 362 if (stat (gzfilename, &st)) { 363 errstr = "\nerror: stat() on gzip file failed"; 364 goto done; 365 } 366 compressed = xmalloc (st.st_size); 367 if (fread (compressed, st.st_size, 1, gz) != 1) { 368 errstr = "\nerror: reading gzip data failed"; 369 goto done; 370 } 371 fclose (gz); 372 373 unlink (gzfilename); 374 375 dataptr = compressed; 376 count = st.st_size; 377 fprintf (file, "#define EASYLOGO_ENABLE_GZIP %i\n\n", count); 378 if (use_gzip & 0x2) 379 fprintf (file, "static unsigned char EASYLOGO_DECOMP_BUFFER[%i];\n\n", image->size); 380 381 done: 382 free (gzfilename); 383 free (gzcmd); 384 385 if (errstr) { 386 perror (errstr); 387 return -1; 388 } 389 } 390 391 /* Headers */ 392 fprintf (file, "#include <video_easylogo.h>\n\n"); 393 /* Macros */ 394 strcpy (def_name, varname); 395 StringUpperCase (def_name); 396 fprintf (file, "#define DEF_%s_WIDTH\t\t%d\n", def_name, 397 image->width); 398 fprintf (file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name, 399 image->height); 400 fprintf (file, "#define DEF_%s_PIXELS\t\t%d\n", def_name, 401 image->pixels); 402 fprintf (file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp); 403 fprintf (file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name, 404 image->pixel_size); 405 fprintf (file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name, 406 image->size); 407 /* Declaration */ 408 fprintf (file, "unsigned char DEF_%s_DATA[] = {\n", 409 def_name); 410 411 /* Data */ 412 while (count) 413 switch (col) { 414 case 0: 415 sprintf (str, " 0x%02x", *dataptr++); 416 col++; 417 count--; 418 break; 419 420 case 16: 421 fprintf (file, "%s", str); 422 if (count > 0) 423 fprintf (file, ","); 424 fprintf (file, "\n"); 425 426 col = 0; 427 break; 428 429 default: 430 strcpy (app, str); 431 sprintf (str, "%s, 0x%02x", app, *dataptr++); 432 col++; 433 count--; 434 break; 435 } 436 437 if (col) 438 fprintf (file, "%s\n", str); 439 440 /* End of declaration */ 441 fprintf (file, "};\n\n"); 442 /* Variable */ 443 fprintf (file, "fastimage_t %s = {\n", varname); 444 fprintf (file, " DEF_%s_DATA,\n", def_name); 445 fprintf (file, " DEF_%s_WIDTH,\n", def_name); 446 fprintf (file, " DEF_%s_HEIGHT,\n", def_name); 447 fprintf (file, " DEF_%s_BPP,\n", def_name); 448 fprintf (file, " DEF_%s_PIXEL_SIZE,\n", def_name); 449 fprintf (file, " DEF_%s_SIZE\n};\n", def_name); 450 451 fclose (file); 452 453 return 0; 454 } 455 456 #define DEF_FILELEN 256 457 458 static void usage (int exit_status) 459 { 460 puts ( 461 "EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n" 462 "\n" 463 "Syntax: easylogo [options] inputfile [outputvar [outputfile]]\n" 464 "\n" 465 "Options:\n" 466 " -r Output RGB888 instead of YUYV\n" 467 " -s Output RGB565 instead of YUYV\n" 468 " -g Compress with gzip\n" 469 " -b Preallocate space in bss for decompressing image\n" 470 " -h Help output\n" 471 "\n" 472 "Where: 'inputfile' is the TGA image to load\n" 473 " 'outputvar' is the variable name to create\n" 474 " 'outputfile' is the output header file (default is 'inputfile.h')" 475 ); 476 exit (exit_status); 477 } 478 479 int main (int argc, char *argv[]) 480 { 481 int c; 482 bool use_rgb888 = false; 483 bool use_rgb565 = false; 484 char inputfile[DEF_FILELEN], 485 outputfile[DEF_FILELEN], varname[DEF_FILELEN]; 486 487 image_t rgb888_logo, rgb565_logo, yuyv_logo; 488 489 while ((c = getopt(argc, argv, "hrsgb")) > 0) { 490 switch (c) { 491 case 'h': 492 usage (0); 493 break; 494 case 'r': 495 use_rgb888 = true; 496 puts("Using 24-bit RGB888 Output Fromat"); 497 break; 498 case 's': 499 use_rgb565 = true; 500 puts("Using 16-bit RGB565 Output Fromat"); 501 break; 502 case 'g': 503 use_gzip |= 0x1; 504 puts ("Compressing with gzip"); 505 break; 506 case 'b': 507 use_gzip |= 0x2; 508 puts ("Preallocating bss space for decompressing image"); 509 break; 510 default: 511 usage (1); 512 break; 513 } 514 } 515 516 c = argc - optind; 517 if (c > 4 || c < 1) 518 usage (1); 519 520 strcpy (inputfile, argv[optind]); 521 522 if (c > 1) 523 strcpy (varname, argv[optind + 1]); 524 else { 525 /* transform "input.tga" to just "input" */ 526 char *dot; 527 strcpy (varname, inputfile); 528 dot = strchr (varname, '.'); 529 if (dot) 530 *dot = '\0'; 531 } 532 533 if (c > 2) 534 strcpy (outputfile, argv[optind + 2]); 535 else { 536 /* just append ".h" to input file name */ 537 strcpy (outputfile, inputfile); 538 strcat (outputfile, ".h"); 539 } 540 541 /* Make sure the output is sent as soon as we printf() */ 542 setbuf(stdout, NULL); 543 544 printf ("Doing '%s' (%s) from '%s'...", 545 outputfile, varname, inputfile); 546 547 /* Import TGA logo */ 548 549 printf ("L"); 550 if (image_load_tga(&rgb888_logo, inputfile) < 0) { 551 printf ("input file not found!\n"); 552 exit (1); 553 } 554 555 /* Convert, save, and free the image */ 556 557 if (!use_rgb888 && !use_rgb565) { 558 printf ("C"); 559 image_rgb_to_yuyv(&rgb888_logo, &yuyv_logo); 560 561 printf("S"); 562 image_save_header(&yuyv_logo, outputfile, varname); 563 image_free(&yuyv_logo); 564 } else if (use_rgb565) { 565 printf("C"); 566 image_rgb888_to_rgb565(&rgb888_logo, &rgb565_logo); 567 568 printf("S"); 569 image_save_header(&rgb565_logo, outputfile, varname); 570 image_free(&rgb565_logo); 571 } else { 572 printf("S"); 573 image_save_header(&rgb888_logo, outputfile, varname); 574 } 575 576 /* Free original image and copy */ 577 578 image_free(&rgb888_logo); 579 580 printf ("\n"); 581 582 return 0; 583 } 584