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 int image_load_tga (image_t *image, char *filename) 131 { 132 FILE *file ; 133 tga_header_t header ; 134 int i; 135 unsigned char app ; 136 rgb_t *p ; 137 138 if( ( file = fopen( filename, "rb" ) ) == NULL ) 139 return -1; 140 141 fread(&header, sizeof(header), 1, file); 142 143 image->width = header.ImageWidth ; 144 image->height = header.ImageHeight ; 145 146 switch (header.ImageTypeCode){ 147 case 2: /* Uncompressed RGB */ 148 image->yuyv = 0 ; 149 image->palette_size = 0 ; 150 image->palette = NULL ; 151 break; 152 153 default: 154 printf("Format not supported!\n"); 155 return -1 ; 156 } 157 158 image->bpp = header.ImagePixelSize ; 159 image->pixel_size = ((image->bpp-1) / 8) + 1 ; 160 image->pixels = image->width * image->height; 161 image->size = image->pixels * image->pixel_size ; 162 image->data = malloc(image->size) ; 163 164 if (image->bpp != 24) 165 { 166 printf("Bpp not supported: %d!\n", image->bpp); 167 return -1 ; 168 } 169 170 fread(image->data, image->size, 1, file); 171 172 /* Swapping R and B values */ 173 174 p = image->data ; 175 for(i=0; i < image->pixels; i++, p++) 176 { 177 app = p->r ; 178 p->r = p->b ; 179 p->b = app ; 180 } 181 182 /* Swapping image */ 183 184 if(!(header.ImageDescriptorByte & 0x20)) 185 { 186 unsigned char *temp = malloc(image->size); 187 int linesize = image->pixel_size * image->width ; 188 void *dest = image->data, 189 *source = temp + image->size - linesize ; 190 191 printf("S"); 192 if (temp == NULL) 193 { 194 printf("Cannot alloc temp buffer!\n"); 195 return -1; 196 } 197 198 memcpy(temp, image->data, image->size); 199 for(i = 0; i<image->height; i++, dest+=linesize, source-=linesize) 200 memcpy(dest, source, linesize); 201 202 free( temp ); 203 } 204 205 #ifdef ENABLE_ASCII_BANNERS 206 printlogo_rgb (image->data,image->width, image->height); 207 #endif 208 209 fclose (file); 210 return 0; 211 } 212 213 int image_free (image_t *image) 214 { 215 if(image->data != NULL) 216 free(image->data); 217 218 if(image->palette != NULL) 219 free(image->palette); 220 221 return 0; 222 } 223 224 int image_rgb_to_yuyv (image_t *rgb_image, image_t *yuyv_image) 225 { 226 rgb_t *rgb_ptr = (rgb_t *) rgb_image->data ; 227 yuyv_t yuyv ; 228 unsigned short *dest ; 229 int count = 0 ; 230 231 yuyv_image->pixel_size = 2 ; 232 yuyv_image->bpp = 16 ; 233 yuyv_image->yuyv = 1 ; 234 yuyv_image->width = rgb_image->width ; 235 yuyv_image->height = rgb_image->height ; 236 yuyv_image->pixels = yuyv_image->width * yuyv_image->height ; 237 yuyv_image->size = yuyv_image->pixels * yuyv_image->pixel_size ; 238 dest = (unsigned short *) (yuyv_image->data = malloc(yuyv_image->size)) ; 239 yuyv_image->palette = 0 ; 240 yuyv_image->palette_size= 0 ; 241 242 while((count++) < rgb_image->pixels) 243 { 244 pixel_rgb_to_yuyv (rgb_ptr++, &yuyv); 245 246 if ((count & 1)==0) /* Was == 0 */ 247 memcpy (dest, ((void *)&yuyv) + 2, sizeof(short)); 248 else 249 memcpy (dest, (void *)&yuyv, sizeof(short)); 250 251 dest ++ ; 252 } 253 254 #ifdef ENABLE_ASCII_BANNERS 255 printlogo_yuyv (yuyv_image->data, yuyv_image->width, yuyv_image->height); 256 #endif 257 return 0 ; 258 } 259 260 int image_save_header (image_t *image, char *filename, char *varname) 261 { 262 FILE *file = fopen (filename, "w"); 263 char app[256], str[256]="", def_name[64] ; 264 int count = image->size, col=0; 265 unsigned char *dataptr = image->data ; 266 if (file==NULL) 267 return -1 ; 268 269 /* Author information */ 270 fprintf(file, "/*\n * Generated by EasyLogo, (C) 2000 by Paolo Scaffardi\n *\n"); 271 fprintf(file, " * To use this, include it and call: easylogo_plot(screen,&%s, width,x,y)\n *\n", varname); 272 fprintf(file, " * Where:\t'screen'\tis the pointer to the frame buffer\n"); 273 fprintf(file, " *\t\t'width'\tis the screen width\n"); 274 fprintf(file, " *\t\t'x'\t\tis the horizontal position\n"); 275 fprintf(file, " *\t\t'y'\t\tis the vertical position\n */\n\n"); 276 277 /* Headers */ 278 fprintf(file, "#include <video_easylogo.h>\n\n"); 279 /* Macros */ 280 strcpy(def_name, varname); 281 StringUpperCase (def_name); 282 fprintf(file, "#define DEF_%s_WIDTH\t\t%d\n", def_name, image->width); 283 fprintf(file, "#define DEF_%s_HEIGHT\t\t%d\n", def_name, image->height); 284 fprintf(file, "#define DEF_%s_PIXELS\t\t%d\n", def_name, image->pixels); 285 fprintf(file, "#define DEF_%s_BPP\t\t%d\n", def_name, image->bpp); 286 fprintf(file, "#define DEF_%s_PIXEL_SIZE\t%d\n", def_name, image->pixel_size); 287 fprintf(file, "#define DEF_%s_SIZE\t\t%d\n\n", def_name, image->size); 288 /* Declaration */ 289 fprintf(file, "unsigned char DEF_%s_DATA[DEF_%s_SIZE] = {\n", def_name, def_name); 290 291 /* Data */ 292 while(count) 293 switch (col){ 294 case 0: 295 sprintf(str, " 0x%02x", *dataptr++); 296 col++; 297 count-- ; 298 break; 299 300 case 16: 301 fprintf(file, "%s", str); 302 if (count > 0) 303 fprintf(file,","); 304 fprintf(file, "\n"); 305 306 col = 0 ; 307 break; 308 309 default: 310 strcpy(app, str); 311 sprintf(str, "%s, 0x%02x", app, *dataptr++); 312 col++ ; 313 count-- ; 314 break; 315 } 316 317 if (col) 318 fprintf(file, "%s\n", str); 319 320 /* End of declaration */ 321 fprintf(file, "};\n\n"); 322 /* Variable */ 323 fprintf(file, "fastimage_t %s = {\n", varname); 324 fprintf(file, " DEF_%s_DATA,\n", def_name); 325 fprintf(file, " DEF_%s_WIDTH,\n", def_name); 326 fprintf(file, " DEF_%s_HEIGHT,\n", def_name); 327 fprintf(file, " DEF_%s_BPP,\n", def_name); 328 fprintf(file, " DEF_%s_PIXEL_SIZE,\n", def_name); 329 fprintf(file, " DEF_%s_SIZE\n};\n", def_name); 330 331 fclose (file); 332 333 return 0 ; 334 } 335 336 #define DEF_FILELEN 256 337 338 int main (int argc, char *argv[]) 339 { 340 char 341 inputfile[DEF_FILELEN], 342 outputfile[DEF_FILELEN], 343 varname[DEF_FILELEN]; 344 345 image_t rgb_logo, yuyv_logo ; 346 347 switch (argc){ 348 case 2: 349 case 3: 350 case 4: 351 strcpy (inputfile, argv[1]); 352 353 if (argc > 2) 354 strcpy (varname, argv[2]); 355 else 356 { 357 char *dot = strchr(inputfile, '.'); 358 int pos = dot - inputfile; 359 360 if (dot) 361 { 362 strncpy (varname, inputfile, pos); 363 varname[pos] = 0 ; 364 } 365 } 366 367 if (argc > 3) 368 strcpy (outputfile, argv[3]); 369 else 370 { 371 char *dot = strchr (varname, '.'); 372 int pos = dot - varname; 373 374 if (dot) 375 { 376 char app[DEF_FILELEN] ; 377 378 strncpy(app, varname, pos); 379 app[pos] = 0; 380 sprintf(outputfile, "%s.h", app); 381 } 382 } 383 break; 384 385 default: 386 printf("EasyLogo 1.0 (C) 2000 by Paolo Scaffardi\n\n"); 387 388 printf("Syntax: easylogo inputfile [outputvar {outputfile}] \n"); 389 printf("\n"); 390 printf("Where: 'inputfile' is the TGA image to load\n"); 391 printf(" 'outputvar' is the variable name to create\n"); 392 printf(" 'outputfile' is the output header file (default is 'inputfile.h')\n"); 393 394 return -1 ; 395 } 396 397 printf("Doing '%s' (%s) from '%s'...", 398 outputfile, varname, inputfile); 399 400 /* Import TGA logo */ 401 402 printf("L"); 403 if (image_load_tga (&rgb_logo, inputfile)<0) 404 { 405 printf("input file not found!\n"); 406 exit(1); 407 } 408 409 /* Convert it to YUYV format */ 410 411 printf("C"); 412 image_rgb_to_yuyv (&rgb_logo, &yuyv_logo) ; 413 414 /* Save it into a header format */ 415 416 printf("S"); 417 image_save_header (&yuyv_logo, outputfile, varname) ; 418 419 /* Free original image and copy */ 420 421 image_free (&rgb_logo); 422 image_free (&yuyv_logo); 423 424 printf("\n"); 425 426 return 0 ; 427 } 428