lib/jpeg.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <memory.h>
   4 #include "jpeg.h"
   5 #include "../config.h"
   6
   7 #ifdef HAVE_JPEGLIB
   8 #define HAVE_BOOLEAN
   9 #include <jpeglib.h>
  10
  11 #define OUTBUFFER_SIZE 0x8000
  12
  13 static FILE*fi;
  14 static JOCTET * buffer;
  15 static unsigned char*dest;
  16 static int len;
  17 static int destlen;
  18 static unsigned char*data;
  19 static int pos;
  20 static int size;
  21
  22 static void file_init_destination(j_compress_ptr cinfo)
  23 {
  24   struct jpeg_destination_mgr*dmgr =
  25       (struct jpeg_destination_mgr*)(cinfo->dest);
  26   buffer = (JOCTET*)malloc(OUTBUFFER_SIZE);
  27   if(!buffer) {
  28       perror("malloc");
  29       printf("Out of memory!\n");
  30       exit(1);
  31   }
  32   dmgr->next_output_byte = buffer;
  33   dmgr->free_in_buffer = OUTBUFFER_SIZE;
  34 }
  35
  36 static boolean file_empty_output_buffer(j_compress_ptr cinfo)
  37 {
  38   struct jpeg_destination_mgr*dmgr =
  39       (struct jpeg_destination_mgr*)(cinfo->dest);
  40   if(fi)
  41     fwrite(buffer, OUTBUFFER_SIZE, 1, fi);
  42   dmgr->next_output_byte = buffer;
  43   dmgr->free_in_buffer = OUTBUFFER_SIZE;
  44   return 1;
  45 }
  46
  47 static void file_term_destination(j_compress_ptr cinfo)
  48 { struct jpeg_destination_mgr*dmgr =
  49       (struct jpeg_destination_mgr*)(cinfo->dest);
  50   if(fi)
  51     fwrite(buffer, OUTBUFFER_SIZE-dmgr->free_in_buffer, 1, fi);
  52   free(buffer);
  53   buffer = 0;
  54   dmgr->free_in_buffer = 0;
  55 }
  56
  57 static void mem_init_destination(j_compress_ptr cinfo)
  58 {
  59   struct jpeg_destination_mgr*dmgr =
  60       (struct jpeg_destination_mgr*)(cinfo->dest);
  61   dmgr->next_output_byte = dest;
  62   dmgr->free_in_buffer = destlen;
  63 }
  64
  65 static boolean mem_empty_output_buffer(j_compress_ptr cinfo)
  66 {
  67     printf("jpeg mem overflow!\n");
  68     exit(1);
  69 }
  70
  71 static void mem_term_destination(j_compress_ptr cinfo)
  72 {
  73   struct jpeg_destination_mgr*dmgr =
  74       (struct jpeg_destination_mgr*)(cinfo->dest);
  75   len = destlen - dmgr->free_in_buffer;
  76   dmgr->free_in_buffer = 0;
  77 }
  78
  79 int jpeg_save(unsigned char*data, unsigned width, unsigned height, int quality, const char*filename)
  80 {
  81   struct jpeg_destination_mgr mgr;
  82   struct jpeg_compress_struct cinfo;
  83   struct jpeg_error_mgr jerr;
  84   int t;
  85
  86   if(filename)
  87     fi = fopen(filename, "wb");
  88   else
  89     fi = 0;
  90
  91   memset(&cinfo, 0, sizeof(cinfo));
  92   memset(&jerr, 0, sizeof(jerr));
  93   memset(&mgr, 0, sizeof(mgr));
  94   cinfo.err = jpeg_std_error(&jerr);
  95   jpeg_create_compress(&cinfo);
  96
  97   mgr.init_destination = file_init_destination;
  98   mgr.empty_output_buffer = file_empty_output_buffer;
  99   mgr.term_destination = file_term_destination;
 100   cinfo.dest = &mgr;
 101
 102   // init compression
 103
 104   cinfo.image_width  = width;
 105   cinfo.image_height = height;
 106   cinfo.input_components = 3;
 107   cinfo.in_color_space = JCS_RGB;
 108   jpeg_set_defaults(&cinfo);
 109   jpeg_set_quality(&cinfo,quality,TRUE);
 110
 111   //jpeg_write_tables(&cinfo);
 112   //jpeg_suppress_tables(&cinfo, TRUE);
 113   jpeg_start_compress(&cinfo, FALSE);
 114
 115   for(t=0;t<height;t++) {
 116     unsigned char*data2 = &data[width*3*t];
 117     jpeg_write_scanlines(&cinfo, &data2, 1);
 118   }
 119   jpeg_finish_compress(&cinfo);
 120
 121   if(fi)
 122     fclose(fi);
 123   jpeg_destroy_compress(&cinfo);
 124   return 1;
 125 }
 126
 127 int jpeg_save_gray(unsigned char*data, unsigned width, unsigned height, int quality, const char*filename)
 128 {
 129   struct jpeg_destination_mgr mgr;
 130   struct jpeg_compress_struct cinfo;
 131   struct jpeg_error_mgr jerr;
 132
 133   if(filename) fi = fopen(filename, "wb");
 134   else         fi = 0;
 135
 136   memset(&cinfo, 0, sizeof(cinfo));
 137   memset(&jerr, 0, sizeof(jerr));
 138   memset(&mgr, 0, sizeof(mgr));
 139   cinfo.err = jpeg_std_error(&jerr);
 140   jpeg_create_compress(&cinfo);
 141
 142   mgr.init_destination = file_init_destination;
 143   mgr.empty_output_buffer = file_empty_output_buffer;
 144   mgr.term_destination = file_term_destination;
 145   cinfo.dest = &mgr;
 146   cinfo.image_width  = width;
 147   cinfo.image_height = height;
 148   cinfo.input_components = 1;
 149   cinfo.in_color_space = JCS_GRAYSCALE;
 150   jpeg_set_defaults(&cinfo);
 151   jpeg_set_quality(&cinfo,quality,TRUE);
 152   jpeg_start_compress(&cinfo, FALSE);
 153   int t;
 154   for(t=0;t<height;t++) {
 155     unsigned char*data2 = &data[width*t];
 156     jpeg_write_scanlines(&cinfo, &data2, 1);
 157   }
 158   jpeg_finish_compress(&cinfo);
 159
 160   if(fi) fclose(fi);
 161   jpeg_destroy_compress(&cinfo);
 162   return 1;
 163 }
 164
 165
 166 int jpeg_save_to_file(unsigned char*data, unsigned width, unsigned height, int quality, FILE*_fi)
 167 {
 168   struct jpeg_destination_mgr mgr;
 169   struct jpeg_compress_struct cinfo;
 170   struct jpeg_error_mgr jerr;
 171   int t;
 172
 173   fi = _fi;
 174
 175   memset(&cinfo, 0, sizeof(cinfo));
 176   memset(&jerr, 0, sizeof(jerr));
 177   memset(&mgr, 0, sizeof(mgr));
 178   cinfo.err = jpeg_std_error(&jerr);
 179   jpeg_create_compress(&cinfo);
 180
 181   mgr.init_destination = file_init_destination;
 182   mgr.empty_output_buffer = file_empty_output_buffer;
 183   mgr.term_destination = file_term_destination;
 184   cinfo.dest = &mgr;
 185
 186   // init compression
 187
 188   cinfo.image_width  = width;
 189   cinfo.image_height = height;
 190   cinfo.input_components = 3;
 191   cinfo.in_color_space = JCS_RGB;
 192   jpeg_set_defaults(&cinfo);
 193   cinfo.dct_method = JDCT_IFAST;
 194   jpeg_set_quality(&cinfo,quality,TRUE);
 195
 196   //jpeg_write_tables(&cinfo);
 197   //jpeg_suppress_tables(&cinfo, TRUE);
 198   jpeg_start_compress(&cinfo, FALSE);
 199
 200   for(t=0;t<height;t++) {
 201     unsigned char*data2 = &data[width*3*t];
 202     jpeg_write_scanlines(&cinfo, &data2, 1);
 203   }
 204   jpeg_finish_compress(&cinfo);
 205   jpeg_destroy_compress(&cinfo);
 206   return 1;
 207 }
 208
 209 int jpeg_save_to_mem(unsigned char*data, unsigned width, unsigned height, int quality, unsigned char*_dest, int _destlen)
 210 {
 211   struct jpeg_destination_mgr mgr;
 212   struct jpeg_compress_struct cinfo;
 213   struct jpeg_error_mgr jerr;
 214   int t;
 215
 216   memset(&cinfo, 0, sizeof(cinfo));
 217   memset(&jerr, 0, sizeof(jerr));
 218   memset(&mgr, 0, sizeof(mgr));
 219   cinfo.err = jpeg_std_error(&jerr);
 220   jpeg_create_compress(&cinfo);
 221
 222   dest = _dest;
 223   len = 0;
 224   destlen = _destlen;
 225
 226   mgr.init_destination = mem_init_destination;
 227   mgr.empty_output_buffer = mem_empty_output_buffer;
 228   mgr.term_destination = mem_term_destination;
 229   cinfo.dest = &mgr;
 230
 231   // init compression
 232
 233   cinfo.image_width  = width;
 234   cinfo.image_height = height;
 235   cinfo.input_components = 3;
 236   cinfo.in_color_space = JCS_RGB;
 237   jpeg_set_defaults(&cinfo);
 238   cinfo.dct_method = JDCT_IFAST;
 239   jpeg_set_quality(&cinfo,quality,TRUE);
 240
 241   jpeg_start_compress(&cinfo, FALSE);
 242   for(t=0;t<height;t++) {
 243     unsigned char*data2 = &data[width*3*t];
 244     jpeg_write_scanlines(&cinfo, &data2, 1);
 245   }
 246   jpeg_finish_compress(&cinfo);
 247   jpeg_destroy_compress(&cinfo);
 248   return len;
 249 }
 250
 251 void mem_init_source (j_decompress_ptr cinfo)
 252 {
 253     struct jpeg_source_mgr* mgr = cinfo->src;
 254     mgr->next_input_byte = data;
 255     mgr->bytes_in_buffer = size;
 256     //printf("init %d\n", size - mgr->bytes_in_buffer);
 257 }
 258
 259 boolean mem_fill_input_buffer (j_decompress_ptr cinfo)
 260 {
 261     struct jpeg_source_mgr* mgr = cinfo->src;
 262     printf("fill %d\n", size - mgr->bytes_in_buffer);
 263     return 0;
 264 }
 265
 266 void mem_skip_input_data (j_decompress_ptr cinfo, long num_bytes)
 267 {
 268     struct jpeg_source_mgr* mgr = cinfo->src;
 269     printf("skip %d +%ld\n", size - mgr->bytes_in_buffer, num_bytes);
 270     if(num_bytes<=0)
 271         return;
 272     mgr->next_input_byte += num_bytes;
 273     mgr->bytes_in_buffer -= num_bytes;
 274 }
 275
 276 boolean mem_resync_to_restart (j_decompress_ptr cinfo, int desired)
 277 {
 278     struct jpeg_source_mgr* mgr = cinfo->src;
 279     printf("resync %d\n", size - mgr->bytes_in_buffer);
 280     mgr->next_input_byte = data;
 281     mgr->bytes_in_buffer = size;
 282     return 1;
 283 }
 284
 285 void mem_term_source (j_decompress_ptr cinfo)
 286 {
 287     struct jpeg_source_mgr* mgr = cinfo->src;
 288     //printf("term %d\n", size - mgr->bytes_in_buffer);
 289 }
 290
 291 int jpeg_load_from_mem(unsigned char*_data, int _size, unsigned char**dest, unsigned*width, unsigned*height)
 292 {
 293     struct jpeg_decompress_struct cinfo;
 294     struct jpeg_error_mgr jerr;
 295     struct jpeg_source_mgr mgr;
 296
 297     data = _data;
 298     size = _size;
 299
 300     jpeg_create_decompress(&cinfo);
 301
 302     mgr.next_input_byte = data;
 303     mgr.bytes_in_buffer = size;
 304     mgr.init_source        =mem_init_source ;
 305     mgr.fill_input_buffer  =mem_fill_input_buffer ;
 306     mgr.skip_input_data    =mem_skip_input_data ;
 307     mgr.resync_to_restart  =mem_resync_to_restart ;
 308     mgr.term_source        =mem_term_source ;
 309
 310     cinfo.err = jpeg_std_error(&jerr);
 311     cinfo.src = &mgr;
 312
 313     jpeg_read_header(&cinfo, TRUE);
 314     cinfo.out_color_space == JCS_RGB;
 315     jpeg_start_decompress(&cinfo);
 316
 317     *width = cinfo.output_width;
 318     *height = cinfo.output_height;
 319     *dest = malloc(cinfo.output_width * cinfo.output_height * 4);
 320
 321     unsigned char*scanline = malloc(cinfo.output_width * 4);
 322     int y;
 323     for(y=0;y<cinfo.output_height;y++) {
 324         unsigned char*to = &(*dest)[cinfo.output_width*y*4];
 325         jpeg_read_scanlines(&cinfo,&scanline,1);
 326         int x;
 327         for(x=0;x<cinfo.output_width;x++) {
 328             to[x*4 + 0] = 255;
 329             to[x*4 + 1] = scanline[x*3 + 0];
 330             to[x*4 + 2] = scanline[x*3 + 1];
 331             to[x*4 + 3] = scanline[x*3 + 2];
 332         }
 333     }
 334     free(scanline);
 335
 336     jpeg_finish_decompress(&cinfo);
 337     jpeg_destroy_decompress(&cinfo);
 338     return 1;
 339 }
 340
 341 typedef struct _RGBA {
 342     unsigned char a,r,g,b;
 343 } RGBA;
 344
 345 typedef unsigned char U8;
 346
 347 int jpeg_load(const char*filename, unsigned char**dest, unsigned*_width, unsigned*_height)
 348 {
 349     struct jpeg_decompress_struct cinfo;
 350     struct jpeg_error_mgr jerr;
 351     struct jpeg_source_mgr mgr;
 352
 353     FILE*fi = fopen(filename, "rb");
 354     if(!fi) {
 355         fprintf(stderr, "Couldn't open file %s\n", filename);
 356         return 0;
 357     }
 358
 359     cinfo.err = jpeg_std_error(&jerr);
 360     jpeg_create_decompress(&cinfo);
 361     jpeg_stdio_src(&cinfo, fi);
 362     jpeg_read_header(&cinfo, TRUE);
 363     jpeg_start_decompress(&cinfo);
 364
 365     U8*scanline = (U8 *)malloc(4 * cinfo.output_width);
 366
 367     unsigned int width = *_width = cinfo.output_width;
 368     unsigned int height = *_height = cinfo.output_height;
 369     unsigned long long int image_size = (unsigned long long)width * height * 4;
 370     if(image_size > 0xffffffff) {
 371         *_width = 0;
 372         *_height = 0;
 373         return 0;
 374     }
 375     *dest = (unsigned char*)malloc(image_size);
 376
 377     int y;
 378     for (y=0;y<height;y++) {
 379         int x;
 380         U8 *js = scanline;
 381         RGBA*line = &((RGBA*)(*dest))[y*width];
 382
 383         jpeg_read_scanlines(&cinfo, &js, 1);
 384         if (cinfo.out_color_space == JCS_GRAYSCALE) {
 385             for (x = 0; x < width; x++) {
 386                 line[x].a = 255;
 387                 line[x].r = line[x].g = line[x].b = js[x];
 388             }
 389         } else if (cinfo.out_color_space == JCS_RGB) {
 390             for (x = width - 1; x >= 0; x--) {
 391                 line[x].a = 255;
 392                 line[x].r = js[x*3+0];
 393                 line[x].g = js[x*3+1];
 394                 line[x].b = js[x*3+2];
 395             }
 396         } else if (cinfo.out_color_space == JCS_YCCK) {
 397             fprintf(stderr, "Error: Can't convert YCCK to RGB.\n");
 398             return 0;
 399         } else if (cinfo.out_color_space == JCS_YCbCr) {
 400             for (x = 0; x < width; x++) {
 401                 int y = js[x * 3 + 0];
 402                 int u = js[x * 3 + 1];
 403                 int v = js[x * 3 + 1];
 404                 line[x].a = 255;
 405                 line[x].r = y + ((360 * (v - 128)) >> 8);
 406                 line[x].g = y - ((88 * (u - 128) + 183 * (v - 128)) >> 8);
 407                 line[x].b = y + ((455 * (u - 128)) >> 8);
 408             }
 409         } else if (cinfo.out_color_space == JCS_CMYK) {
 410             for (x = 0; x < width; x++) {
 411                 int white = 255 - js[x * 4 + 3];
 412                 line[x].a = 255;
 413                 line[x].r = white - ((js[x * 4] * white) >> 8);
 414                 line[x].g = white - ((js[x * 4 + 1] * white) >> 8);
 415                 line[x].b = white - ((js[x * 4 + 2] * white) >> 8);
 416             }
 417         }
 418     }
 419
 420     free(scanline);
 421
 422     jpeg_finish_decompress(&cinfo);
 423     jpeg_destroy_decompress(&cinfo);
 424     fclose(fi);
 425     return 1;
 426 }
 427
 428 void jpeg_get_size(const char *filename, unsigned *width, unsigned*height)
 429 {
 430     struct jpeg_decompress_struct cinfo;
 431     struct jpeg_error_mgr jerr;
 432     FILE *fi;
 433     *width = 0;
 434     *height = 0;
 435     cinfo.err = jpeg_std_error(&jerr);
 436     cinfo.image_width = 0;
 437     cinfo.image_height = 0;
 438     jpeg_create_decompress(&cinfo);
 439     if ((fi = fopen(filename, "rb")) == NULL) {
 440         fprintf(stderr, "couldn't open %s\n", filename);
 441         return;
 442     }
 443     jpeg_stdio_src(&cinfo, fi);
 444     jpeg_read_header(&cinfo, TRUE);
 445     *width = cinfo.image_width;
 446     *height = cinfo.image_height;
 447     jpeg_destroy_decompress(&cinfo);
 448     fclose(fi);
 449 }
 450
 451 #else
 452
 453 int jpeg_save(unsigned char*data, unsigned width, unsigned height, int quality, const char*filename)
 454 {
 455     fprintf(stderr, "jpeg_save: No JPEG support compiled in\n");
 456     return 0;
 457 }
 458 int jpeg_save_to_file(unsigned char*data, unsigned width, unsigned height, int quality, FILE*fi)
 459 {
 460     fprintf(stderr, "jpeg_save_to_file: No JPEG support compiled in\n");
 461     return 0;
 462 }
 463 int jpeg_save_to_mem(unsigned char*data, unsigned width, unsigned height, int quality, unsigned char*dest, int destsize)
 464 {
 465     fprintf(stderr, "jpeg_save_tomem: No JPEG support compiled in\n");
 466     return 0;
 467 }
 468 int jpeg_load_from_mem(unsigned char*_data, int size, unsigned char**dest, unsigned*width, unsigned*height)
 469 {
 470     fprintf(stderr, "jpeg_load_from_mem: No JPEG support compiled in\n");
 471     return 0;
 472 }
 473 int jpeg_load(const char*filename, unsigned char**dest, unsigned*_width, unsigned*_height)
 474 {
 475     fprintf(stderr, "jpeg_load: No JPEG support compiled in\n");
 476     return 0;
 477 }
 478 void jpeg_get_size(const char *fname, unsigned *width, unsigned *height)
 479 {
 480     *width = 0;
 481     *height = 0;
 482     fprintf(stderr, "jpeg_get_size: No JPEG support compiled in\n");
 483 }
 484
 485 #endif