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 ** 7 ** This is still under construction! 8 */ 9 10 #include <stdio.h> 11 #include <stdlib.h> 12 #include <string.h> 13 14 #pragma pack(1) 15 16 /*#define ENABLE_ASCII_BANNERS */ 17 18 typedef struct { 19 unsigned char id; 20 unsigned char ColorMapType; 21 unsigned char ImageTypeCode; 22 unsigned short ColorMapOrigin; 23 unsigned short ColorMapLenght; 24 unsigned char ColorMapEntrySize; 25 unsigned short ImageXOrigin; 26 unsigned short ImageYOrigin; 27 unsigned short ImageWidth; 28 unsigned short ImageHeight; 29 unsigned char ImagePixelSize; 30 unsigned char ImageDescriptorByte; 31 } tga_header_t; 32 33 typedef struct { 34 unsigned char r, g, b; 35 } rgb_t; 36 37 typedef struct { 38 unsigned char b, g, r; 39 } bgr_t; 40 41 typedef struct { 42 unsigned char Cb, y1, Cr, y2; 43 } yuyv_t; 44 45 typedef struct { 46 void *data, *palette; 47 int width, height, pixels, bpp, pixel_size, size, palette_size, yuyv; 48 } image_t; 49 50 void StringUpperCase (char *str) 51 { 52 int count = strlen (str); 53 char c; 54 55 while (count--) { 56 c = *str; 57 if ((c >= 'a') && (c <= 'z')) 58 *str = 'A' + (c - 'a'); 59 str++; 60 } 61 } 62 63 void StringLowerCase (char *str) 64 { 65 int count = strlen (str); 66 char c; 67 68 while (count--) { 69 c = *str; 70 if ((c >= 'A') && (c <= 'Z')) 71 *str = 'a' + (c - 'A'); 72 str++; 73 } 74 } 75 void pixel_rgb_to_yuyv (rgb_t * rgb_pixel, yuyv_t * yuyv_pixel) 76 { 77 unsigned int pR, pG, pB; 78 79 /* Transform (0-255) components to (0-100) */ 80 pR = rgb_pixel->r * 100 / 255; 81 pG = rgb_pixel->g * 100 / 255; 82 pB = rgb_pixel->b * 100 / 255; 83 84 /* Calculate YUV values (0-255) from RGB beetween 0-100 */ 85 yuyv_pixel->y1 = yuyv_pixel->y2 = 209 * (pR + pG + pB) / 300 + 16; 86 yuyv_pixel->Cb = pB - (pR / 4) - (pG * 3 / 4) + 128; 87 yuyv_pixel->Cr = pR - (pG * 3 / 4) - (pB / 4) + 128; 88 89 return; 90 } 91 92 void printlogo_rgb (rgb_t * data, int w, int h) 93 { 94 int x, y; 95 96 for (y = 0; y < h; y++) { 97 for (x = 0; x < w; x++, data++) 98 if ((data->r < 99 30) /*&&(data->g == 0)&&(data->b == 0) */ ) 100 printf (" "); 101 else 102 printf ("X"); 103 printf ("\n"); 104 } 105 } 106 107 void printlogo_yuyv (unsigned short *data, int w, int h) 108 { 109 int x, y; 110 111 for (y = 0; y < h; y++) { 112 for (x = 0; x < w; x++, data++) 113 if (*data == 0x1080) /* Because of inverted on i386! */ 114 printf (" "); 115 else 116 printf ("X"); 117 printf ("\n"); 118 } 119 } 120 121 static inline unsigned short le16_to_cpu (unsigned short val) 122 { 123 union { 124 unsigned char pval[2]; 125 unsigned short val; 126 } swapped; 127 128 swapped.val = val; 129 return (swapped.pval[1] << 8) + swapped.pval[0]; 130 } 131 132 int image_load_tga (image_t * image, char *filename) 133 { 134 FILE *file; 135 tga_header_t header; 136 int i; 137 unsigned char app; 138 rgb_t *p; 139 140 if ((file = fopen (filename, "rb")) == NULL) 141 return -1; 142 143 fread (&header, sizeof (header), 1, file); 144 145 /* byte swap: tga is little endian, host is ??? */ 146 header.ColorMapOrigin = le16_to_cpu (header.ColorMapOrigin); 147 header.ColorMapLenght = le16_to_cpu (header.ColorMapLenght); 148 header.ImageXOrigin = le16_to_cpu (header.ImageXOrigin); 149 header.ImageYOrigin = le16_to_cpu (header.ImageYOrigin); 150 header.ImageWidth = le16_to_cpu (header.ImageWidth); 151 header.ImageHeight = le16_to_cpu (header.ImageHeight); 152 153 image->width = header.ImageWidth; 154 image->height = header.ImageHeight; 155 156 switch (header.ImageTypeCode) { 157 case 2: /* Uncompressed RGB */ 158 image->yuyv = 0; 159 image->palette_size = 0; 160 image->palette = NULL; 161 break; 162 163 default: 164 printf ("Format not supported!\n"); 165 return -1; 166 } 167 168 image->bpp = header.ImagePixelSize; 169 image->pixel_size = ((image->bpp - 1) / 8) + 1; 170 image->pixels = image->width * image->height; 171 image->size = image->pixels * image->pixel_size; 172 image->data = malloc (image->size); 173 174 if (image->bpp != 24) { 175 printf ("Bpp not supported: %d!\n", image->bpp); 176 return -1; 177 } 178 179 fread (image->data, image->size, 1, file); 180 181 /* Swapping R and B values */ 182 183 p = image->data; 184 for (i = 0; i < image->pixels; i++, p++) { 185 app = p->r; 186 p->r = p->b; 187 p->b = app; 188 } 189 190 /* Swapping image */ 191 192 if (!(header.ImageDescriptorByte & 0x20)) { 193 unsigned char *temp = malloc (image->size); 194 int linesize = image->pixel_size * image->width; 195 void *dest = image->data, 196 *source = temp + image->size - linesize; 197 198 printf ("S"); 199 if (temp == NULL) { 200 printf ("Cannot alloc temp buffer!\n"); 201 return -1; 202 } 203 204 memcpy (temp, image->data, image->size); 205 for (i = 0; i < image->height; 206 i++, dest += linesize, source -= linesize) 207 memcpy (dest, source, linesize); 208 209 free (temp); 210 } 211 #ifdef ENABLE_ASCII_BANNERS 212 printlogo_rgb (image->data, image->width, image->height); 213 #endif 214 215 fclose (file); 216 return 0; 217 } 218 219 int image_free (image_t * image) 220 { 221 if (image->data != NULL) 222 free (image->data); 223 224 if (image->palette != NULL) 225 free (image->palette); 226 227 return 0; 228 } 229 230 int image_rgb_to_yuyv (image_t * rgb_image, image_t * yuyv_image) 231 { 232 rgb_t *rgb_ptr = (rgb_t *) rgb_image->data; 233 yuyv_t yuyv; 234 unsigned short *dest; 235 int count = 0; 236 237 yuyv_image->pixel_size = 2; 238 yuyv_image->bpp = 16; 239 yuyv_image->yuyv = 1; 240 yuyv_image->width = rgb_image->width; 241 yuyv_image->height = rgb_image->height; 242 yuyv_image->pixels = yuyv_image->width * yuyv_image->height; 243 yuyv_image->size = yuyv_image->pixels * yuyv_image->pixel_size; 244 dest = (unsigned short *) (yuyv_image->data = 245 malloc (yuyv_image->size)); 246 yuyv_image->palette = 0; 247 yuyv_image->palette_size = 0; 248 249 while ((count++) < rgb_image->pixels) { 250 pixel_rgb_to_yuyv (rgb_ptr++, &yuyv); 251 252 if ((count & 1) == 0) /* Was == 0 */ 253 memcpy (dest, ((void *) &yuyv) + 2, sizeof (short)); 254 else 255 memcpy (dest, (void *) &yuyv, sizeof (short)); 256 257 dest++; 258 } 259 260 #ifdef ENABLE_ASCII_BANNERS 261 printlogo_yuyv (yuyv_image->data, yuyv_image->width, 262 yuyv_image->height); 263 #endif 264 return 0; 265 } 266 267 int image_save_header (image_t * image, char *filename, char *varname) 268 { 269 FILE *file = fopen (filename, "w"); 270 char app[256], str[256] = "", def_name[64]; 271 int count = image->size, col = 0; 272 unsigned char *dataptr = image->data; 273 274 if (file == NULL) 275 return -1; 276 277 /* Author information */ 278 fprintf (file, 279 "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n *\n"); 280 fprintf (file, 281 " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n", 282 varname); 283 fprintf (file, 284 " * Where:\t'screen'\tis the pointer to the frame buffer\n"); 285 fprintf (file, " *\t\t'width'\tis the screen width\n"); 286 fprintf (file, " *\t\t'x'\t\tis the horizontal position\n"); 287 fprintf (file, " *\t\t'y'\t\tis the vertical position\n */\n\n"); 288 289 /* Headers */ 290 fprintf (file, "#include <video_easylogo.h>\n\n"); 291 /* Macros */ 292 strcpy (def_name, varname); 293 StringUpperCase (def_name); 294 fprintf (file, "#define DEF_%s_WIDTH\t\t%d\n", def_name, 295 image->width); 296 fprintf (file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name, 297 image->height); 298 fprintf (file, "#define DEF_%s_PIXELS\t\t%d\n", def_name, 299 image->pixels); 300 fprintf (file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp); 301 fprintf (file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name, 302 image->pixel_size); 303 fprintf (file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name, 304 image->size); 305 /* Declaration */ 306 fprintf (file, "unsigned char DEF_%s_DATA[DEF_%s_SIZE] = {\n", 307 def_name, def_name); 308 309 /* Data */ 310 while (count) 311 switch (col) { 312 case 0: 313 sprintf (str, " 0x%02x", *dataptr++); 314 col++; 315 count--; 316 break; 317 318 case 16: 319 fprintf (file, "%s", str); 320 if (count > 0) 321 fprintf (file, ","); 322 fprintf (file, "\n"); 323 324 col = 0; 325 break; 326 327 default: 328 strcpy (app, str); 329 sprintf (str, "%s, 0x%02x", app, *dataptr++); 330 col++; 331 count--; 332 break; 333 } 334 335 if (col) 336 fprintf (file, "%s\n", str); 337 338 /* End of declaration */ 339 fprintf (file, "};\n\n"); 340 /* Variable */ 341 fprintf (file, "fastimage_t %s = {\n", varname); 342 fprintf (file, " DEF_%s_DATA,\n", def_name); 343 fprintf (file, " DEF_%s_WIDTH,\n", def_name); 344 fprintf (file, " DEF_%s_HEIGHT,\n", def_name); 345 fprintf (file, " DEF_%s_BPP,\n", def_name); 346 fprintf (file, " DEF_%s_PIXEL_SIZE,\n", def_name); 347 fprintf (file, " DEF_%s_SIZE\n};\n", def_name); 348 349 fclose (file); 350 351 return 0; 352 } 353 354 #define DEF_FILELEN 256 355 356 int main (int argc, char *argv[]) 357 { 358 char inputfile[DEF_FILELEN], 359 outputfile[DEF_FILELEN], varname[DEF_FILELEN]; 360 361 image_t rgb_logo, yuyv_logo; 362 363 switch (argc) { 364 case 2: 365 case 3: 366 case 4: 367 strcpy (inputfile, argv[1]); 368 369 if (argc > 2) 370 strcpy (varname, argv[2]); 371 else { 372 char *dot = strchr (inputfile, '.'); 373 int pos = dot - inputfile; 374 375 if (dot) { 376 strncpy (varname, inputfile, pos); 377 varname[pos] = 0; 378 } 379 } 380 381 if (argc > 3) 382 strcpy (outputfile, argv[3]); 383 else { 384 char *dot = strchr (varname, '.'); 385 int pos = dot - varname; 386 387 if (dot) { 388 char app[DEF_FILELEN]; 389 390 strncpy (app, varname, pos); 391 app[pos] = 0; 392 sprintf (outputfile, "%s.h", app); 393 } 394 } 395 break; 396 397 default: 398 printf ("EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n\n"); 399 400 printf("Syntax: easylogo inputfile [outputvar {outputfile}] \n"); 401 printf("\n"); 402 printf("Where: 'inputfile' is the TGA image to load\n"); 403 printf(" 'outputvar' is the variable name to create\n"); 404 printf(" 'outputfile' is the output header file (default is 'inputfile.h')\n"); 405 406 return -1; 407 } 408 409 printf ("Doing '%s' (%s) from '%s'...", 410 outputfile, varname, inputfile); 411 412 /* Import TGA logo */ 413 414 printf ("L"); 415 if (image_load_tga (&rgb_logo, inputfile) < 0) { 416 printf ("input file not found!\n"); 417 exit (1); 418 } 419 420 /* Convert it to YUYV format */ 421 422 printf ("C"); 423 image_rgb_to_yuyv (&rgb_logo, &yuyv_logo); 424 425 /* Save it into a header format */ 426 427 printf ("S"); 428 image_save_header (&yuyv_logo, outputfile, varname); 429 430 /* Free original image and copy */ 431 432 image_free (&rgb_logo); 433 image_free (&yuyv_logo); 434 435 printf ("\n"); 436 437 return 0; 438 } 439