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 use_gzip = 0; 280 281 int image_save_header (image_t * image, char *filename, char *varname) 282 { 283 FILE *file = fopen (filename, "w"); 284 char app[256], str[256] = "", def_name[64]; 285 int count = image->size, col = 0; 286 unsigned char *dataptr = image->data; 287 288 if (file == NULL) 289 return -1; 290 291 /* Author information */ 292 fprintf (file, 293 "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n *\n"); 294 fprintf (file, 295 " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n", 296 varname); 297 fprintf (file, 298 " * Where:\t'screen'\tis the pointer to the frame buffer\n"); 299 fprintf (file, " *\t\t'width'\tis the screen width\n"); 300 fprintf (file, " *\t\t'x'\t\tis the horizontal position\n"); 301 fprintf (file, " *\t\t'y'\t\tis the vertical position\n */\n\n"); 302 303 /* gzip compress */ 304 if (use_gzip & 0x1) { 305 const char *errstr = NULL; 306 unsigned char *compressed; 307 struct stat st; 308 FILE *gz; 309 char *gzfilename = xmalloc(strlen (filename) + 20); 310 char *gzcmd = xmalloc(strlen (filename) + 20); 311 312 sprintf (gzfilename, "%s.gz", filename); 313 sprintf (gzcmd, "gzip > %s", gzfilename); 314 gz = popen (gzcmd, "w"); 315 if (!gz) { 316 errstr = "\nerror: popen() failed"; 317 goto done; 318 } 319 if (fwrite (image->data, image->size, 1, gz) != 1) { 320 errstr = "\nerror: writing data to gzip failed"; 321 goto done; 322 } 323 if (pclose (gz)) { 324 errstr = "\nerror: gzip process failed"; 325 goto done; 326 } 327 328 gz = fopen (gzfilename, "r"); 329 if (!gz) { 330 errstr = "\nerror: open() on gzip data failed"; 331 goto done; 332 } 333 if (stat (gzfilename, &st)) { 334 errstr = "\nerror: stat() on gzip file failed"; 335 goto done; 336 } 337 compressed = xmalloc (st.st_size); 338 if (fread (compressed, st.st_size, 1, gz) != 1) { 339 errstr = "\nerror: reading gzip data failed"; 340 goto done; 341 } 342 fclose (gz); 343 344 unlink (gzfilename); 345 346 dataptr = compressed; 347 count = st.st_size; 348 fprintf (file, "#define EASYLOGO_ENABLE_GZIP %i\n\n", count); 349 if (use_gzip & 0x2) 350 fprintf (file, "static unsigned char EASYLOGO_DECOMP_BUFFER[%i];\n\n", image->size); 351 352 done: 353 free (gzfilename); 354 free (gzcmd); 355 356 if (errstr) { 357 perror (errstr); 358 return -1; 359 } 360 } 361 362 /* Headers */ 363 fprintf (file, "#include <video_easylogo.h>\n\n"); 364 /* Macros */ 365 strcpy (def_name, varname); 366 StringUpperCase (def_name); 367 fprintf (file, "#define DEF_%s_WIDTH\t\t%d\n", def_name, 368 image->width); 369 fprintf (file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name, 370 image->height); 371 fprintf (file, "#define DEF_%s_PIXELS\t\t%d\n", def_name, 372 image->pixels); 373 fprintf (file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp); 374 fprintf (file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name, 375 image->pixel_size); 376 fprintf (file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name, 377 image->size); 378 /* Declaration */ 379 fprintf (file, "unsigned char DEF_%s_DATA[] = {\n", 380 def_name); 381 382 /* Data */ 383 while (count) 384 switch (col) { 385 case 0: 386 sprintf (str, " 0x%02x", *dataptr++); 387 col++; 388 count--; 389 break; 390 391 case 16: 392 fprintf (file, "%s", str); 393 if (count > 0) 394 fprintf (file, ","); 395 fprintf (file, "\n"); 396 397 col = 0; 398 break; 399 400 default: 401 strcpy (app, str); 402 sprintf (str, "%s, 0x%02x", app, *dataptr++); 403 col++; 404 count--; 405 break; 406 } 407 408 if (col) 409 fprintf (file, "%s\n", str); 410 411 /* End of declaration */ 412 fprintf (file, "};\n\n"); 413 /* Variable */ 414 fprintf (file, "fastimage_t %s = {\n", varname); 415 fprintf (file, " DEF_%s_DATA,\n", def_name); 416 fprintf (file, " DEF_%s_WIDTH,\n", def_name); 417 fprintf (file, " DEF_%s_HEIGHT,\n", def_name); 418 fprintf (file, " DEF_%s_BPP,\n", def_name); 419 fprintf (file, " DEF_%s_PIXEL_SIZE,\n", def_name); 420 fprintf (file, " DEF_%s_SIZE\n};\n", def_name); 421 422 fclose (file); 423 424 return 0; 425 } 426 427 #define DEF_FILELEN 256 428 429 static void usage (int exit_status) 430 { 431 puts ( 432 "EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n" 433 "\n" 434 "Syntax: easylogo [options] inputfile [outputvar [outputfile]]\n" 435 "\n" 436 "Options:\n" 437 " -r Output RGB instead of YUYV\n" 438 " -g Compress with gzip\n" 439 " -b Preallocate space in bss for decompressing image\n" 440 " -h Help output\n" 441 "\n" 442 "Where: 'inputfile' is the TGA image to load\n" 443 " 'outputvar' is the variable name to create\n" 444 " 'outputfile' is the output header file (default is 'inputfile.h')" 445 ); 446 exit (exit_status); 447 } 448 449 int main (int argc, char *argv[]) 450 { 451 int c; 452 bool use_rgb = false; 453 char inputfile[DEF_FILELEN], 454 outputfile[DEF_FILELEN], varname[DEF_FILELEN]; 455 456 image_t rgb_logo, yuyv_logo; 457 458 while ((c = getopt(argc, argv, "hrgb")) > 0) { 459 switch (c) { 460 case 'h': 461 usage (0); 462 break; 463 case 'r': 464 use_rgb = true; 465 puts ("Using 24-bit RGB Output Fromat"); 466 break; 467 case 'g': 468 use_gzip |= 0x1; 469 puts ("Compressing with gzip"); 470 break; 471 case 'b': 472 use_gzip |= 0x2; 473 puts ("Preallocating bss space for decompressing image"); 474 break; 475 default: 476 usage (1); 477 break; 478 } 479 } 480 481 c = argc - optind; 482 if (c > 4 || c < 1) 483 usage (1); 484 485 strcpy (inputfile, argv[optind]); 486 487 if (c > 1) 488 strcpy (varname, argv[optind + 1]); 489 else { 490 /* transform "input.tga" to just "input" */ 491 char *dot; 492 strcpy (varname, inputfile); 493 dot = strchr (varname, '.'); 494 if (dot) 495 *dot = '\0'; 496 } 497 498 if (c > 2) 499 strcpy (outputfile, argv[optind + 2]); 500 else { 501 /* just append ".h" to input file name */ 502 strcpy (outputfile, inputfile); 503 strcat (outputfile, ".h"); 504 } 505 506 /* Make sure the output is sent as soon as we printf() */ 507 setbuf(stdout, NULL); 508 509 printf ("Doing '%s' (%s) from '%s'...", 510 outputfile, varname, inputfile); 511 512 /* Import TGA logo */ 513 514 printf ("L"); 515 if (image_load_tga (&rgb_logo, inputfile) < 0) { 516 printf ("input file not found!\n"); 517 exit (1); 518 } 519 520 /* Convert it to YUYV format if wanted */ 521 522 if (!use_rgb) { 523 printf ("C"); 524 image_rgb_to_yuyv (&rgb_logo, &yuyv_logo); 525 } 526 527 /* Save it into a header format */ 528 529 printf ("S"); 530 image_save_header (use_rgb ? &rgb_logo : &yuyv_logo, outputfile, varname); 531 532 /* Free original image and copy */ 533 534 image_free (&rgb_logo); 535 if (!use_rgb) 536 image_free (&yuyv_logo); 537 538 printf ("\n"); 539 540 return 0; 541 } 542