codec/j2k_to_image.c

   1 /*
   2  * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
   3  * Copyright (c) 2002-2007, Professor Benoit Macq
   4  * Copyright (c) 2001-2003, David Janssens
   5  * Copyright (c) 2002-2003, Yannick Verschueren
   6  * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
   7  * Copyright (c) 2005, Herve Drolon, FreeImage Team
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <stdlib.h>
  34
  35 #include "openjpeg.h"
  36 #include "compat/getopt.h"
  37 #include "convert.h"
  38 #include "dirent.h"
  39
  40 #ifndef WIN32
  41 #define stricmp strcasecmp
  42 #define strnicmp strncasecmp
  43 #endif
  44
  45 /* ----------------------------------------------------------------------- */
  46
  47 #define J2K_CFMT 0
  48 #define JP2_CFMT 1
  49 #define JPT_CFMT 2
  50
  51 #define PXM_DFMT 10
  52 #define PGX_DFMT 11
  53 #define BMP_DFMT 12
  54 #define YUV_DFMT 13
  55
  56 /* ----------------------------------------------------------------------- */
  57
  58 typedef struct dircnt{
  59         /** Buffer for holding images read from Directory*/
  60         char *filename_buf;
  61         /** Pointer to the buffer*/
  62         char **filename;
  63 }dircnt_t;
  64
  65
  66 typedef struct img_folder{
  67         /** The directory path of the folder containing input images*/
  68         char *imgdirpath;
  69         /** Output format*/
  70         char *out_format;
  71         /** Enable option*/
  72         char set_imgdir;
  73         /** Enable Cod Format for output*/
  74         char set_out_format;
  75
  76 }img_fol_t;
  77
  78 void decode_help_display() {
  79         fprintf(stdout,"HELP\n----\n\n");
  80         fprintf(stdout,"- the -h option displays this help information on screen\n\n");
  81
  82 /* UniPG>> */
  83         fprintf(stdout,"List of parameters for the JPEG 2000 "
  84 #ifdef USE_JPWL
  85                 "+ JPWL "
  86 #endif /* USE_JPWL */
  87                 "decoder:\n");
  88 /* <<UniPG */
  89         fprintf(stdout,"\n");
  90         fprintf(stdout,"\n");
  91         fprintf(stdout,"  -ImgDir \n");
  92         fprintf(stdout,"        Image file Directory path \n");
  93         fprintf(stdout,"  -OutFor \n");
  94         fprintf(stdout,"    REQUIRED only if -ImgDir is used\n");
  95         fprintf(stdout,"          Need to specify only format without filename <BMP>  \n");
  96         fprintf(stdout,"    Currently accepts PGM, PPM, PNM, PGX, BMP format\n");
  97         fprintf(stdout,"  -i <compressed file>\n");
  98         fprintf(stdout,"    REQUIRED only if an Input image directory not specified\n");
  99         fprintf(stdout,"    Currently accepts J2K-files, JP2-files and JPT-files. The file type\n");
 100         fprintf(stdout,"    is identified based on its suffix.\n");
 101         fprintf(stdout,"  -o <decompressed file>\n");
 102         fprintf(stdout,"    REQUIRED\n");
 103         fprintf(stdout,"    Currently accepts PGM-files, PPM-files, PNM-files, PGX-files and\n");
 104         fprintf(stdout,"    BMP-files. Binary data is written to the file (not ascii). If a PGX\n");
 105         fprintf(stdout,"    filename is given, there will be as many output files as there are\n");
 106         fprintf(stdout,"    components: an indice starting from 0 will then be appended to the\n");
 107         fprintf(stdout,"    output filename, just before the \"pgx\" extension. If a PGM filename\n");
 108         fprintf(stdout,"    is given and there are more than one component, only the first component\n");
 109         fprintf(stdout,"    will be written to the file.\n");
 110         fprintf(stdout,"  -r <reduce factor>\n");
 111         fprintf(stdout,"    Set the number of highest resolution levels to be discarded. The\n");
 112         fprintf(stdout,"    image resolution is effectively divided by 2 to the power of the\n");
 113         fprintf(stdout,"    number of discarded levels. The reduce factor is limited by the\n");
 114         fprintf(stdout,"    smallest total number of decomposition levels among tiles.\n");
 115         fprintf(stdout,"  -l <number of quality layers to decode>\n");
 116         fprintf(stdout,"    Set the maximum number of quality layers to decode. If there are\n");
 117         fprintf(stdout,"    less quality layers than the specified number, all the quality layers\n");
 118         fprintf(stdout,"    are decoded.\n");
 119 /* UniPG>> */
 120 #ifdef USE_JPWL
 121         fprintf(stdout,"  -W <options>\n");
 122         fprintf(stdout,"    Activates the JPWL correction capability, if the codestream complies.\n");
 123         fprintf(stdout,"    Options can be a comma separated list of <param=val> tokens:\n");
 124         fprintf(stdout,"    c, c=numcomps\n");
 125         fprintf(stdout,"       numcomps is the number of expected components in the codestream\n");
 126         fprintf(stdout,"       (search of first EPB rely upon this, default is %d)\n", JPWL_EXPECTED_COMPONENTS);
 127 #endif /* USE_JPWL */
 128 /* <<UniPG */
 129         fprintf(stdout,"\n");
 130 }
 131
 132 /* -------------------------------------------------------------------------- */
 133
 134 int get_num_images(char *imgdirpath){
 135         DIR *dir;
 136         struct dirent* content;
 137         int num_images = 0;
 138
 139         /*Reading the input images from given input directory*/
 140
 141         dir= opendir(imgdirpath);
 142         if(!dir){
 143                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);
 144                 return 0;
 145         }
 146
 147         while((content=readdir(dir))!=NULL){
 148                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )
 149                         continue;
 150                 num_images++;
 151         }
 152         return num_images;
 153 }
 154
 155 int load_images(dircnt_t *dirptr, char *imgdirpath){
 156         DIR *dir;
 157         struct dirent* content;
 158         int i = 0;
 159
 160         /*Reading the input images from given input directory*/
 161
 162         dir= opendir(imgdirpath);
 163         if(!dir){
 164                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);
 165                 return 1;
 166         }else   {
 167                 fprintf(stderr,"Folder opened successfully\n");
 168         }
 169
 170         while((content=readdir(dir))!=NULL){
 171                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )
 172                         continue;
 173
 174                 strcpy(dirptr->filename[i],content->d_name);
 175                 i++;
 176         }
 177         return 0;
 178 }
 179
 180 int get_file_format(char *filename) {
 181         unsigned int i;
 182         static const char *extension[] = {"pgx", "pnm", "pgm", "ppm", "bmp", "j2k", "jp2", "jpt" };
 183         static const int format[] = { PGX_DFMT, PXM_DFMT, PXM_DFMT, PXM_DFMT, BMP_DFMT, J2K_CFMT, JP2_CFMT, JPT_CFMT };
 184         char * ext = strrchr(filename, '.');
 185         if (ext == NULL)
 186                 return -1;
 187         ext++;
 188         if(ext) {
 189                 for(i = 0; i < sizeof(format)/sizeof(*format); i++) {
 190                         if(strnicmp(ext, extension[i], 3) == 0) {
 191                                 return format[i];
 192                         }
 193                 }
 194         }
 195
 196         return -1;
 197 }
 198
 199 char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_dparameters_t *parameters){
 200         char image_filename[OPJ_PATH_LEN], infilename[OPJ_PATH_LEN],outfilename[OPJ_PATH_LEN],temp_ofname[OPJ_PATH_LEN];
 201
 202         strcpy(image_filename,dirptr->filename[imageno]);
 203         fprintf(stderr,"Imageno=%d %s\n",imageno,image_filename);
 204         parameters->decod_format = get_file_format(image_filename);
 205         if (parameters->decod_format == -1)
 206                 return 1;
 207         sprintf(infilename,"%s/%s",img_fol->imgdirpath,image_filename);
 208         strncpy(parameters->infile, infilename, sizeof(infilename));
 209
 210         //Set output file
 211         strcpy(temp_ofname,strtok(image_filename,"."));
 212         if(img_fol->set_out_format==1){
 213                 sprintf(outfilename,"%s/%s.%s",img_fol->imgdirpath,temp_ofname,img_fol->out_format);
 214                 strncpy(parameters->outfile, outfilename, sizeof(outfilename));
 215         }
 216         return 0;
 217 }
 218
 219
 220 /* -------------------------------------------------------------------------- */
 221
 222 int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *parameters,img_fol_t *img_fol) {
 223         /* parse the command line */
 224         int totlen;
 225         option_t long_option[]={
 226                 {"ImgDir",REQ_ARG, NULL ,'y'},
 227                 {"OutFor",REQ_ARG, NULL ,'O'},
 228         };
 229
 230 /* UniPG>> */
 231         const char optlist[] = "i:o:r:l:h"
 232
 233 #ifdef USE_JPWL
 234                                         "W:"
 235 #endif /* USE_JPWL */
 236                                         ;
 237 /* <<UniPG */
 238         totlen=sizeof(long_option);
 239         img_fol->set_out_format = 0;
 240         while (1) {
 241                 int c = getopt_long(argc, argv,optlist,long_option,NULL,totlen);
 242                 if (c == -1)
 243                         break;
 244                 switch (c) {
 245                         case 'i':                       /* input file */
 246                         {
 247                                 char *infile = optarg;
 248                                 parameters->decod_format = get_file_format(infile);
 249                                 switch(parameters->decod_format) {
 250                                         case J2K_CFMT:
 251                                         case JP2_CFMT:
 252                                         case JPT_CFMT:
 253                                                 break;
 254                                         default:
 255                                                 fprintf(stderr,
 256                                                         "!! Unrecognized format for infile : %s [accept only *.j2k, *.jp2, *.jpc or *.jpt] !!\n\n",
 257                                                         infile);
 258                                                 return 1;
 259                                 }
 260                                 strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);
 261                         }
 262                         break;
 263
 264                                 /* ----------------------------------------------------- */
 265
 266                         case 'o':                       /* output file */
 267                         {
 268                                 char *outfile = optarg;
 269                                 parameters->cod_format = get_file_format(outfile);
 270                                 switch(parameters->cod_format) {
 271                                         case PGX_DFMT:
 272                                         case PXM_DFMT:
 273                                         case BMP_DFMT:
 274                                                 break;
 275                                         default:
 276                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx or *.bmp]!! \n", outfile);
 277                                                 return 1;
 278                                 }
 279                                 strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);
 280                         }
 281                         break;
 282
 283                                 /* ----------------------------------------------------- */
 284
 285                         case 'O':                       /* output format */
 286                         {
 287                                 char outformat[50];
 288                                 char *of = optarg;
 289                                 sprintf(outformat,".%s",of);
 290                                 img_fol->set_out_format = 1;
 291                                 parameters->cod_format = get_file_format(outformat);
 292                                 switch(parameters->cod_format) {
 293                                         case PGX_DFMT:
 294                                                 img_fol->out_format = "pgx";
 295                                                 break;
 296                                         case PXM_DFMT:
 297                                                 img_fol->out_format = "ppm";
 298                                                 break;
 299                                         case BMP_DFMT:
 300                                                 img_fol->out_format = "bmp";
 301                                                 break;
 302                                         default:
 303                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx or *.bmp]!! \n");
 304                                                 return 1;
 305                                                 break;
 306                                 }
 307                         }
 308                         break;
 309
 310                                 /* ----------------------------------------------------- */
 311
 312
 313                         case 'r':               /* reduce option */
 314                         {
 315                                 sscanf(optarg, "%d", &parameters->cp_reduce);
 316                         }
 317                         break;
 318
 319                                 /* ----------------------------------------------------- */
 320
 321
 322                         case 'l':               /* layering option */
 323                         {
 324                                 sscanf(optarg, "%d", &parameters->cp_layer);
 325                         }
 326                         break;
 327
 328                                 /* ----------------------------------------------------- */
 329
 330                         case 'h':                       /* display an help description */
 331                                 decode_help_display();
 332                                 return 1;
 333
 334                                 /* ------------------------------------------------------ */
 335
 336                         case 'y':                       /* Image Directory path */
 337                                 {
 338                                         img_fol->imgdirpath = (char*)malloc(strlen(optarg) + 1);
 339                                         strcpy(img_fol->imgdirpath,optarg);
 340                                         img_fol->set_imgdir=1;
 341                                 }
 342                                 break;
 343                                 /* ----------------------------------------------------- */
 344 /* UniPG>> */
 345 #ifdef USE_JPWL
 346
 347                         case 'W':                       /* activate JPWL correction */
 348                         {
 349                                 char *token = NULL;
 350
 351                                 token = strtok(optarg, ",");
 352                                 while(token != NULL) {
 353
 354                                         /* search expected number of components */
 355                                         if (*token == 'c') {
 356
 357                                                 static int compno;
 358
 359                                                 compno = JPWL_EXPECTED_COMPONENTS; /* predefined no. of components */
 360
 361                                                 if(sscanf(token, "c=%d", &compno) == 1) {
 362                                                         /* Specified */
 363                                                         if ((compno < 1) || (compno > 256)) {
 364                                                                 fprintf(stderr, "ERROR -> invalid number of components c = %d\n", compno);
 365                                                                 return 1;
 366                                                         }
 367                                                         parameters->jpwl_exp_comps = compno;
 368
 369                                                 } else if (!strcmp(token, "c")) {
 370                                                         /* default */
 371                                                         parameters->jpwl_exp_comps = compno; /* auto for default size */
 372
 373                                                 } else {
 374                                                         fprintf(stderr, "ERROR -> invalid components specified = %s\n", token);
 375                                                         return 1;
 376                                                 };
 377                                         }
 378
 379                                         /* search maximum number of tiles */
 380                                         if (*token == 't') {
 381
 382                                                 static int tileno;
 383
 384                                                 tileno = JPWL_MAXIMUM_TILES; /* maximum no. of tiles */
 385
 386                                                 if(sscanf(token, "t=%d", &tileno) == 1) {
 387                                                         /* Specified */
 388                                                         if ((tileno < 1) || (tileno > JPWL_MAXIMUM_TILES)) {
 389                                                                 fprintf(stderr, "ERROR -> invalid number of tiles t = %d\n", tileno);
 390                                                                 return 1;
 391                                                         }
 392                                                         parameters->jpwl_max_tiles = tileno;
 393
 394                                                 } else if (!strcmp(token, "t")) {
 395                                                         /* default */
 396                                                         parameters->jpwl_max_tiles = tileno; /* auto for default size */
 397
 398                                                 } else {
 399                                                         fprintf(stderr, "ERROR -> invalid tiles specified = %s\n", token);
 400                                                         return 1;
 401                                                 };
 402                                         }
 403
 404                                         /* next token or bust */
 405                                         token = strtok(NULL, ",");
 406                                 };
 407                                 parameters->jpwl_correct = true;
 408                                 fprintf(stdout, "JPWL correction capability activated\n");
 409                                 fprintf(stdout, "- expecting %d components\n", parameters->jpwl_exp_comps);
 410                         }
 411                         break;
 412 #endif /* USE_JPWL */
 413 /* <<UniPG */
 414
 415                                 /* ----------------------------------------------------- */
 416
 417                         default:
 418                                 fprintf(stderr,"WARNING -> this option is not valid \"-%c %s\"\n",c, optarg);
 419                                 break;
 420                 }
 421         }
 422
 423         /* check for possible errors */
 424         if(img_fol->set_imgdir==1){
 425                 if(!(parameters->infile[0]==0)){
 426                         fprintf(stderr, "Error: options -ImgDir and -i cannot be used together !!\n");
 427                         return 1;
 428                 }
 429                 if(img_fol->set_out_format == 0){
 430                         fprintf(stderr, "Error: When -ImgDir is used, -OutFor <FORMAT> must be used !!\n");
 431                         fprintf(stderr, "Only one format allowed! Valid format PGM, PPM, PNM, PGX,BMP!!\n");
 432                         return 1;
 433                 }
 434                 if(!((parameters->outfile[0] == 0))){
 435                         fprintf(stderr, "Error: options -ImgDir and -o cannot be used together !!\n");
 436                         return 1;
 437                 }
 438         }else{
 439                 if((parameters->infile[0] == 0) || (parameters->outfile[0] == 0)) {
 440                         fprintf(stderr, "Error: One of option; -i or -ImgDir must be specified\n");
 441                         fprintf(stderr, "Error: When using -i; -o must be used\n");
 442                         fprintf(stderr, "usage: image_to_j2k -i *.j2k/jp2 -o *.pgm/ppm/pnm/pgx/bmp(+ options)\n");
 443                         return 1;
 444                 }
 445         }
 446
 447         return 0;
 448 }
 449
 450 /* -------------------------------------------------------------------------- */
 451
 452 /**
 453 sample error callback expecting a FILE* client object
 454 */
 455 void error_callback(const char *msg, void *client_data) {
 456         FILE *stream = (FILE*)client_data;
 457         fprintf(stream, "[ERROR] %s", msg);
 458 }
 459 /**
 460 sample warning callback expecting a FILE* client object
 461 */
 462 void warning_callback(const char *msg, void *client_data) {
 463         FILE *stream = (FILE*)client_data;
 464         fprintf(stream, "[WARNING] %s", msg);
 465 }
 466 /**
 467 sample debug callback expecting no client object
 468 */
 469 void info_callback(const char *msg, void *client_data) {
 470         (void)client_data;
 471         fprintf(stdout, "[INFO] %s", msg);
 472 }
 473
 474 /* -------------------------------------------------------------------------- */
 475
 476 int main(int argc, char **argv) {
 477         opj_dparameters_t parameters;   /* decompression parameters */
 478         img_fol_t img_fol;
 479         opj_event_mgr_t event_mgr;              /* event manager */
 480         opj_image_t *image = NULL;
 481         FILE *fsrc = NULL;
 482         unsigned char *src = NULL;
 483         int file_length;
 484         int num_images;
 485         int i,imageno;
 486         dircnt_t *dirptr;
 487         char process_file = 1;
 488         opj_dinfo_t* dinfo = NULL;      /* handle to a decompressor */
 489         opj_cio_t *cio = NULL;
 490
 491         /* configure the event callbacks (not required) */
 492         memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
 493         event_mgr.error_handler = error_callback;
 494         event_mgr.warning_handler = warning_callback;
 495         event_mgr.info_handler = info_callback;
 496
 497         /* set decoding parameters to default values */
 498         opj_set_default_decoder_parameters(&parameters);
 499
 500
 501         /* parse input and get user encoding parameters */
 502         if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol) == 1) {
 503                 return 0;
 504         }
 505
 506         if(img_fol.set_imgdir==1){
 507                 num_images=get_num_images(img_fol.imgdirpath);
 508
 509                 dirptr=(dircnt_t*)malloc(sizeof(dircnt_t));
 510                 if(dirptr){
 511                         dirptr->filename_buf = (char*)malloc(num_images*OPJ_PATH_LEN*sizeof(char));     // Stores at max 10 image file names
 512                         dirptr->filename = (char**) malloc(num_images*sizeof(char*));
 513
 514                         if(!dirptr->filename_buf){
 515                                 return 0;
 516                         }
 517                         for(i=0;i<num_images;i++){
 518                                 dirptr->filename[i] = dirptr->filename_buf + i*OPJ_PATH_LEN;
 519                         }
 520                 }
 521                 if(load_images(dirptr,img_fol.imgdirpath)==1){
 522                         return 0;
 523                 }
 524                 if (num_images==0){
 525                         fprintf(stdout,"Folder is empty\n");
 526                         return 0;
 527                 }
 528         }else{
 529                 num_images=1;
 530         }
 531
 532         /*Encoding image one by one*/
 533         for(imageno = 0; imageno < num_images ; imageno++)
 534         {
 535
 536                 image = NULL;
 537                 fprintf(stderr,"\n");
 538
 539                 if(img_fol.set_imgdir==1){
 540                         if (get_next_file(imageno, dirptr,&img_fol, &parameters)) {
 541                                 fprintf(stderr,"skipping file...\n");
 542                                 continue;
 543                         }
 544
 545                 }
 546
 547
 548                 /* read the input file and put it in memory */
 549                 /* ---------------------------------------- */
 550                 fsrc = fopen(parameters.infile, "rb");
 551                 if (!fsrc) {
 552                         fprintf(stderr, "ERROR -> failed to open %s for reading\n", parameters.infile);
 553                         return 1;
 554                 }
 555                 fseek(fsrc, 0, SEEK_END);
 556                 file_length = ftell(fsrc);
 557                 fseek(fsrc, 0, SEEK_SET);
 558                 src = (unsigned char *) malloc(file_length);
 559                 fread(src, 1, file_length, fsrc);
 560                 fclose(fsrc);
 561
 562
 563
 564                 /* decode the code-stream */
 565                 /* ---------------------- */
 566
 567                 switch(parameters.decod_format) {
 568                 case J2K_CFMT:
 569                 {
 570                         /* JPEG-2000 codestream */
 571
 572                         /* get a decoder handle */
 573                         dinfo = opj_create_decompress(CODEC_J2K);
 574
 575                         /* catch events using our callbacks and give a local context */
 576                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
 577
 578                         /* setup the decoder decoding parameters using user parameters */
 579                         opj_setup_decoder(dinfo, &parameters);
 580
 581                         /* open a byte stream */
 582                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
 583
 584                         /* decode the stream and fill the image structure */
 585                         image = opj_decode(dinfo, cio);
 586                         if(!image) {
 587                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
 588                                 opj_destroy_decompress(dinfo);
 589                                 opj_cio_close(cio);
 590                                 return 1;
 591                         }
 592
 593                         /* close the byte stream */
 594                         opj_cio_close(cio);
 595                 }
 596                 break;
 597
 598                 case JP2_CFMT:
 599                 {
 600                         /* JPEG 2000 compressed image data */
 601
 602                         /* get a decoder handle */
 603                         dinfo = opj_create_decompress(CODEC_JP2);
 604
 605                         /* catch events using our callbacks and give a local context */
 606                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
 607
 608                         /* setup the decoder decoding parameters using the current image and user parameters */
 609                         opj_setup_decoder(dinfo, &parameters);
 610
 611                         /* open a byte stream */
 612                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
 613
 614                         /* decode the stream and fill the image structure */
 615                         image = opj_decode(dinfo, cio);
 616                         if(!image) {
 617                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
 618                                 opj_destroy_decompress(dinfo);
 619                                 opj_cio_close(cio);
 620                                 return 1;
 621                         }
 622
 623                         /* close the byte stream */
 624                         opj_cio_close(cio);
 625
 626                 }
 627                 break;
 628
 629                 case JPT_CFMT:
 630                 {
 631                         /* JPEG 2000, JPIP */
 632
 633                         /* get a decoder handle */
 634                         dinfo = opj_create_decompress(CODEC_JPT);
 635
 636                         /* catch events using our callbacks and give a local context */
 637                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
 638
 639                         /* setup the decoder decoding parameters using user parameters */
 640                         opj_setup_decoder(dinfo, &parameters);
 641
 642                         /* open a byte stream */
 643                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
 644
 645                         /* decode the stream and fill the image structure */
 646                         image = opj_decode(dinfo, cio);
 647                         if(!image) {
 648                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
 649                                 opj_destroy_decompress(dinfo);
 650                                 opj_cio_close(cio);
 651                                 return 1;
 652                         }
 653
 654                         /* close the byte stream */
 655                         opj_cio_close(cio);
 656                 }
 657                 break;
 658
 659                 default:
 660                         fprintf(stderr, "False input image format skipping file..\n");
 661                         continue;
 662         }
 663
 664                 /* free the memory containing the code-stream */
 665                 free(src);
 666                 src = NULL;
 667
 668                 /* create output image */
 669                 /* ------------------- */
 670                         switch (parameters.cod_format) {
 671                 case PXM_DFMT:                  /* PNM PGM PPM */
 672                         imagetopnm(image, parameters.outfile);
 673                         break;
 674
 675                 case PGX_DFMT:                  /* PGX */
 676                         imagetopgx(image, parameters.outfile);
 677                         break;
 678
 679                 case BMP_DFMT:                  /* BMP */
 680                         imagetobmp(image, parameters.outfile);
 681                         break;
 682                         }
 683
 684                         /* free remaining structures */
 685                         if(dinfo) {
 686                                 opj_destroy_decompress(dinfo);
 687                         }
 688                         /* free image data structure */
 689                         opj_image_destroy(image);
 690
 691         }
 692         return 0;
 693 }
 694 //end main
 695