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, 47 *palette ; 48 int width, 49 height, 50 pixels, 51 bpp, 52 pixel_size, 53 size, 54 palette_size, 55 yuyv; 56 } image_t ; 57 58 void StringUpperCase (char *str) 59 { 60 int count = strlen(str); 61 char c ; 62 63 while(count--) 64 { 65 c=*str; 66 if ((c >= 'a')&&(c<='z')) 67 *str = 'A' + (c-'a'); 68 str++ ; 69 } 70 } 71 72 void StringLowerCase (char *str) 73 { 74 int count = strlen(str); 75 char c ; 76 77 while(count--) 78 { 79 c=*str; 80 if ((c >= 'A')&&(c<='Z')) 81 *str = 'a' + (c-'A'); 82 str++ ; 83 } 84 } 85 void pixel_rgb_to_yuyv (rgb_t *rgb_pixel, yuyv_t *yuyv_pixel) 86 { 87 unsigned int pR, pG, pB ; 88 89 /* Transform (0-255) components to (0-100) */ 90 pR = rgb_pixel->r * 100 / 255 ; 91 pG = rgb_pixel->g * 100 / 255 ; 92 pB = rgb_pixel->b * 100 / 255 ; 93 94 /* Calculate YUV values (0-255) from RGB beetween 0-100 */ 95 yuyv_pixel->y1 = yuyv_pixel->y2 = 209 * (pR + pG + pB) / 300 + 16 ; 96 yuyv_pixel->Cb = pB - (pR/4) - (pG*3/4) + 128 ; 97 yuyv_pixel->Cr = pR - (pG*3/4) - (pB/4) + 128 ; 98 99 return ; 100 } 101 102 void printlogo_rgb (rgb_t *data, int w, int h) 103 { 104 int x,y; 105 for (y=0; y<h; y++) 106 { 107 for (x=0; x<w; x++, data++) 108 if ((data->r < 30)/*&&(data->g == 0)&&(data->b == 0)*/) 109 printf(" "); 110 else 111 printf("X"); 112 printf("\n"); 113 } 114 } 115 116 void printlogo_yuyv (unsigned short *data, int w, int h) 117 { 118 int x,y; 119 for (y=0; y<h; y++) 120 { 121 for (x=0; x<w; x++, data++) 122 if (*data == 0x1080) /* Because of inverted on i386! */ 123 printf(" "); 124 else 125 printf("X"); 126 printf("\n"); 127 } 128 } 129 130 static inline unsigned short le16_to_cpu (unsigned short val) 131 { 132 union { 133 unsigned char pval[2]; 134 unsigned short val; 135 } swapped; 136 swapped.val = val; 137 return (swapped.pval[1] << 8) + swapped.pval[0]; 138 } 139 140 int image_load_tga (image_t *image, char *filename) 141 { 142 FILE *file ; 143 tga_header_t header ; 144 int i; 145 unsigned char app ; 146 rgb_t *p ; 147 148 if( ( file = fopen( filename, "rb" ) ) == NULL ) 149 return -1; 150 151 fread(&header, sizeof(header), 1, file); 152 153 /* byte swap: tga is little endian, host is ??? */ 154 header.ColorMapOrigin = le16_to_cpu (header.ColorMapOrigin); 155 header.ColorMapLenght = le16_to_cpu (header.ColorMapLenght); 156 header.ImageXOrigin = le16_to_cpu (header.ImageXOrigin); 157 header.ImageYOrigin = le16_to_cpu (header.ImageYOrigin); 158 header.ImageWidth = le16_to_cpu (header.ImageWidth); 159 header.ImageHeight = le16_to_cpu (header.ImageHeight); 160 161 image->width = header.ImageWidth ; 162 image->height = header.ImageHeight ; 163 164 switch (header.ImageTypeCode){ 165 case 2: /* Uncompressed RGB */ 166 image->yuyv = 0 ; 167 image->palette_size = 0 ; 168 image->palette = NULL ; 169 break; 170 171 default: 172 printf("Format not supported!\n"); 173 return -1 ; 174 } 175 176 image->bpp = header.ImagePixelSize ; 177 image->pixel_size = ((image->bpp-1) / 8) + 1 ; 178 image->pixels = image->width * image->height; 179 image->size = image->pixels * image->pixel_size ; 180 image->data = malloc(image->size) ; 181 182 if (image->bpp != 24) 183 { 184 printf("Bpp not supported: %d!\n", image->bpp); 185 return -1 ; 186 } 187 188 fread(image->data, image->size, 1, file); 189 190 /* Swapping R and B values */ 191 192 p = image->data ; 193 for(i=0; i < image->pixels; i++, p++) 194 { 195 app = p->r ; 196 p->r = p->b ; 197 p->b = app ; 198 } 199 200 /* Swapping image */ 201 202 if(!(header.ImageDescriptorByte & 0x20)) 203 { 204 unsigned char *temp = malloc(image->size); 205 int linesize = image->pixel_size * image->width ; 206 void *dest = image->data, 207 *source = temp + image->size - linesize ; 208 209 printf("S"); 210 if (temp == NULL) 211 { 212 printf("Cannot alloc temp buffer!\n"); 213 return -1; 214 } 215 216 memcpy(temp, image->data, image->size); 217 for(i = 0; i<image->height; i++, dest+=linesize, source-=linesize) 218 memcpy(dest, source, linesize); 219 220 free( temp ); 221 } 222 223 #ifdef ENABLE_ASCII_BANNERS 224 printlogo_rgb (image->data,image->width, image->height); 225 #endif 226 227 fclose (file); 228 return 0; 229 } 230 231 int image_free (image_t *image) 232 { 233 if(image->data != NULL) 234 free(image->data); 235 236 if(image->palette != NULL) 237 free(image->palette); 238 239 return 0; 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 = malloc(yuyv_image->size)) ; 257 yuyv_image->palette = 0 ; 258 yuyv_image->palette_size= 0 ; 259 260 while((count++) < rgb_image->pixels) 261 { 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, yuyv_image->height); 274 #endif 275 return 0 ; 276 } 277 278 int image_save_header (image_t *image, char *filename, char *varname) 279 { 280 FILE *file = fopen (filename, "w"); 281 char app[256], str[256]="", def_name[64] ; 282 int count = image->size, col=0; 283 unsigned char *dataptr = image->data ; 284 if (file==NULL) 285 return -1 ; 286 287 /* Author information */ 288 fprintf(file, "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n *\n"); 289 fprintf(file, " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n", varname); 290 fprintf(file, " * Where:\t'screen'\tis the pointer to the frame buffer\n"); 291 fprintf(file, " *\t\t'width'\tis the screen width\n"); 292 fprintf(file, " *\t\t'x'\t\tis the horizontal position\n"); 293 fprintf(file, " *\t\t'y'\t\tis the vertical position\n */\n\n"); 294 295 /* Headers */ 296 fprintf(file, "#include <video_easylogo.h>\n\n"); 297 /* Macros */ 298 strcpy(def_name, varname); 299 StringUpperCase (def_name); 300 fprintf(file, "#define DEF_%s_WIDTH\t\t%d\n", def_name, image->width); 301 fprintf(file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name, image->height); 302 fprintf(file, "#define DEF_%s_PIXELS\t\t%d\n", def_name, image->pixels); 303 fprintf(file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp); 304 fprintf(file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name, image->pixel_size); 305 fprintf(file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name, image->size); 306 /* Declaration */ 307 fprintf(file, "unsigned char DEF_%s_DATA[DEF_%s_SIZE] = {\n", 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 359 inputfile[DEF_FILELEN], 360 outputfile[DEF_FILELEN], 361 varname[DEF_FILELEN]; 362 363 image_t rgb_logo, yuyv_logo ; 364 365 switch (argc){ 366 case 2: 367 case 3: 368 case 4: 369 strcpy (inputfile, argv[1]); 370 371 if (argc > 2) 372 strcpy (varname, argv[2]); 373 else 374 { 375 char *dot = strchr(inputfile, '.'); 376 int pos = dot - inputfile; 377 378 if (dot) 379 { 380 strncpy (varname, inputfile, pos); 381 varname[pos] = 0 ; 382 } 383 } 384 385 if (argc > 3) 386 strcpy (outputfile, argv[3]); 387 else 388 { 389 char *dot = strchr (varname, '.'); 390 int pos = dot - varname; 391 392 if (dot) 393 { 394 char app[DEF_FILELEN] ; 395 396 strncpy(app, varname, pos); 397 app[pos] = 0; 398 sprintf(outputfile, "%s.h", app); 399 } 400 } 401 break; 402 403 default: 404 printf("EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n\n"); 405 406 printf("Syntax: easylogo inputfile [outputvar {outputfile}] \n"); 407 printf("\n"); 408 printf("Where: 'inputfile' is the TGA image to load\n"); 409 printf(" 'outputvar' is the variable name to create\n"); 410 printf(" 'outputfile' is the output header file (default is 'inputfile.h')\n"); 411 412 return -1 ; 413 } 414 415 printf("Doing '%s' (%s) from '%s'...", 416 outputfile, varname, inputfile); 417 418 /* Import TGA logo */ 419 420 printf("L"); 421 if (image_load_tga (&rgb_logo, inputfile)<0) 422 { 423 printf("input file not found!\n"); 424 exit(1); 425 } 426 427 /* Convert it to YUYV format */ 428 429 printf("C"); 430 image_rgb_to_yuyv (&rgb_logo, &yuyv_logo) ; 431 432 /* Save it into a header format */ 433 434 printf("S"); 435 image_save_header (&yuyv_logo, outputfile, varname) ; 436 437 /* Free original image and copy */ 438 439 image_free (&rgb_logo); 440 image_free (&yuyv_logo); 441 442 printf("\n"); 443 444 return 0 ; 445 } 446