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  * Copyright (c) 2006-2007, Parvatha Elangovan
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 #include <stdio.h>
  33 #include <string.h>
  34 #include <stdlib.h>
  35
  36 #include "openjpeg.h"
  37 #include "compat/getopt.h"
  38 #include "convert.h"
  39 #include "dirent.h"
  40
  41 #ifndef WIN32
  42 #define stricmp strcasecmp
  43 #define strnicmp strncasecmp
  44 #endif
  45
  46 /* ----------------------------------------------------------------------- */
  47
  48 #define J2K_CFMT 0
  49 #define JP2_CFMT 1
  50 #define JPT_CFMT 2
  51
  52 #define PXM_DFMT 10
  53 #define PGX_DFMT 11
  54 #define BMP_DFMT 12
  55 #define YUV_DFMT 13
  56 #define TIF_DFMT 14
  57
  58 /* ----------------------------------------------------------------------- */
  59
  60 typedef struct dircnt{
  61         /** Buffer for holding images read from Directory*/
  62         char *filename_buf;
  63         /** Pointer to the buffer*/
  64         char **filename;
  65 }dircnt_t;
  66
  67
  68 typedef struct img_folder{
  69         /** The directory path of the folder containing input images*/
  70         char *imgdirpath;
  71         /** Output format*/
  72         char *out_format;
  73         /** Enable option*/
  74         char set_imgdir;
  75         /** Enable Cod Format for output*/
  76         char set_out_format;
  77
  78 }img_fol_t;
  79
  80 void decode_help_display() {
  81         fprintf(stdout,"HELP\n----\n\n");
  82         fprintf(stdout,"- the -h option displays this help information on screen\n\n");
  83
  84 /* UniPG>> */
  85         fprintf(stdout,"List of parameters for the JPEG 2000 "
  86 #ifdef USE_JPWL
  87                 "+ JPWL "
  88 #endif /* USE_JPWL */
  89                 "decoder:\n");
  90 /* <<UniPG */
  91         fprintf(stdout,"\n");
  92         fprintf(stdout,"\n");
  93         fprintf(stdout,"  -ImgDir \n");
  94         fprintf(stdout,"        Image file Directory path \n");
  95         fprintf(stdout,"  -OutFor \n");
  96         fprintf(stdout,"    REQUIRED only if -ImgDir is used\n");
  97         fprintf(stdout,"          Need to specify only format without filename <BMP>  \n");
  98         fprintf(stdout,"    Currently accepts PGM, PPM, PNM, PGX, BMP format\n");
  99         fprintf(stdout,"  -i <compressed file>\n");
 100         fprintf(stdout,"    REQUIRED only if an Input image directory not specified\n");
 101         fprintf(stdout,"    Currently accepts J2K-files, JP2-files and JPT-files. The file type\n");
 102         fprintf(stdout,"    is identified based on its suffix.\n");
 103         fprintf(stdout,"  -o <decompressed file>\n");
 104         fprintf(stdout,"    REQUIRED\n");
 105         fprintf(stdout,"    Currently accepts PGM-files, PPM-files, PNM-files, PGX-files and\n");
 106         fprintf(stdout,"    BMP-files. Binary data is written to the file (not ascii). If a PGX\n");
 107         fprintf(stdout,"    filename is given, there will be as many output files as there are\n");
 108         fprintf(stdout,"    components: an indice starting from 0 will then be appended to the\n");
 109         fprintf(stdout,"    output filename, just before the \"pgx\" extension. If a PGM filename\n");
 110         fprintf(stdout,"    is given and there are more than one component, only the first component\n");
 111         fprintf(stdout,"    will be written to the file.\n");
 112         fprintf(stdout,"  -r <reduce factor>\n");
 113         fprintf(stdout,"    Set the number of highest resolution levels to be discarded. The\n");
 114         fprintf(stdout,"    image resolution is effectively divided by 2 to the power of the\n");
 115         fprintf(stdout,"    number of discarded levels. The reduce factor is limited by the\n");
 116         fprintf(stdout,"    smallest total number of decomposition levels among tiles.\n");
 117         fprintf(stdout,"  -l <number of quality layers to decode>\n");
 118         fprintf(stdout,"    Set the maximum number of quality layers to decode. If there are\n");
 119         fprintf(stdout,"    less quality layers than the specified number, all the quality layers\n");
 120         fprintf(stdout,"    are decoded.\n");
 121 /* UniPG>> */
 122 #ifdef USE_JPWL
 123         fprintf(stdout,"  -W <options>\n");
 124         fprintf(stdout,"    Activates the JPWL correction capability, if the codestream complies.\n");
 125         fprintf(stdout,"    Options can be a comma separated list of <param=val> tokens:\n");
 126         fprintf(stdout,"    c, c=numcomps\n");
 127         fprintf(stdout,"       numcomps is the number of expected components in the codestream\n");
 128         fprintf(stdout,"       (search of first EPB rely upon this, default is %d)\n", JPWL_EXPECTED_COMPONENTS);
 129 #endif /* USE_JPWL */
 130 /* <<UniPG */
 131         fprintf(stdout,"\n");
 132 }
 133
 134 /* -------------------------------------------------------------------------- */
 135
 136 int get_num_images(char *imgdirpath){
 137         DIR *dir;
 138         struct dirent* content;
 139         int num_images = 0;
 140
 141         /*Reading the input images from given input directory*/
 142
 143         dir= opendir(imgdirpath);
 144         if(!dir){
 145                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);
 146                 return 0;
 147         }
 148
 149         while((content=readdir(dir))!=NULL){
 150                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )
 151                         continue;
 152                 num_images++;
 153         }
 154         return num_images;
 155 }
 156
 157 int load_images(dircnt_t *dirptr, char *imgdirpath){
 158         DIR *dir;
 159         struct dirent* content;
 160         int i = 0;
 161
 162         /*Reading the input images from given input directory*/
 163
 164         dir= opendir(imgdirpath);
 165         if(!dir){
 166                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);
 167                 return 1;
 168         }else   {
 169                 fprintf(stderr,"Folder opened successfully\n");
 170         }
 171
 172         while((content=readdir(dir))!=NULL){
 173                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )
 174                         continue;
 175
 176                 strcpy(dirptr->filename[i],content->d_name);
 177                 i++;
 178         }
 179         return 0;
 180 }
 181
 182 int get_file_format(char *filename) {
 183         unsigned int i;
 184         static const char *extension[] = {"pgx", "pnm", "pgm", "ppm", "bmp","tif", "j2k", "jp2", "jpt", "j2c" };
 185         static const int format[] = { PGX_DFMT, PXM_DFMT, PXM_DFMT, PXM_DFMT, BMP_DFMT, TIF_DFMT, J2K_CFMT, JP2_CFMT, JPT_CFMT, J2K_CFMT };
 186         char * ext = strrchr(filename, '.');
 187         if (ext == NULL)
 188                 return -1;
 189         ext++;
 190         if(ext) {
 191                 for(i = 0; i < sizeof(format)/sizeof(*format); i++) {
 192                         if(strnicmp(ext, extension[i], 3) == 0) {
 193                                 return format[i];
 194                         }
 195                 }
 196         }
 197
 198         return -1;
 199 }
 200
 201 char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_dparameters_t *parameters){
 202         char image_filename[OPJ_PATH_LEN], infilename[OPJ_PATH_LEN],outfilename[OPJ_PATH_LEN],temp_ofname[OPJ_PATH_LEN];
 203
 204         strcpy(image_filename,dirptr->filename[imageno]);
 205         fprintf(stderr,"File Number %d \"%s\"\n",imageno,image_filename);
 206         parameters->decod_format = get_file_format(image_filename);
 207         if (parameters->decod_format == -1)
 208                 return 1;
 209         sprintf(infilename,"%s/%s",img_fol->imgdirpath,image_filename);
 210         strncpy(parameters->infile, infilename, sizeof(infilename));
 211
 212         //Set output file
 213         strcpy(temp_ofname,strtok(image_filename,"."));
 214         if(img_fol->set_out_format==1){
 215                 sprintf(outfilename,"%s/%s.%s",img_fol->imgdirpath,temp_ofname,img_fol->out_format);
 216                 strncpy(parameters->outfile, outfilename, sizeof(outfilename));
 217         }
 218         return 0;
 219 }
 220
 221
 222 /* -------------------------------------------------------------------------- */
 223
 224 int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *parameters,img_fol_t *img_fol) {
 225         /* parse the command line */
 226         int totlen;
 227         option_t long_option[]={
 228                 {"ImgDir",REQ_ARG, NULL ,'y'},
 229                 {"OutFor",REQ_ARG, NULL ,'O'},
 230         };
 231
 232 /* UniPG>> */
 233         const char optlist[] = "i:o:r:l:h"
 234
 235 #ifdef USE_JPWL
 236                                         "W:"
 237 #endif /* USE_JPWL */
 238                                         ;
 239 /* <<UniPG */
 240         totlen=sizeof(long_option);
 241         img_fol->set_out_format = 0;
 242         while (1) {
 243                 int c = getopt_long(argc, argv,optlist,long_option,totlen);
 244                 if (c == -1)
 245                         break;
 246                 switch (c) {
 247                         case 'i':                       /* input file */
 248                         {
 249                                 char *infile = optarg;
 250                                 parameters->decod_format = get_file_format(infile);
 251                                 switch(parameters->decod_format) {
 252                                         case J2K_CFMT:
 253                                         case JP2_CFMT:
 254                                         case JPT_CFMT:
 255                                                 break;
 256                                         default:
 257                                                 fprintf(stderr,
 258                                                         "!! Unrecognized format for infile : %s [accept only *.j2k, *.jp2, *.jpc or *.jpt] !!\n\n",
 259                                                         infile);
 260                                                 return 1;
 261                                 }
 262                                 strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);
 263                         }
 264                         break;
 265
 266                                 /* ----------------------------------------------------- */
 267
 268                         case 'o':                       /* output file */
 269                         {
 270                                 char *outfile = optarg;
 271                                 parameters->cod_format = get_file_format(outfile);
 272                                 switch(parameters->cod_format) {
 273                                         case PGX_DFMT:
 274                                         case PXM_DFMT:
 275                                         case BMP_DFMT:
 276                                         case TIF_DFMT:
 277                                                 break;
 278                                         default:
 279                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx or *.bmp]!! \n", outfile);
 280                                                 return 1;
 281                                 }
 282                                 strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);
 283                         }
 284                         break;
 285
 286                                 /* ----------------------------------------------------- */
 287
 288                         case 'O':                       /* output format */
 289                         {
 290                                 char outformat[50];
 291                                 char *of = optarg;
 292                                 sprintf(outformat,".%s",of);
 293                                 img_fol->set_out_format = 1;
 294                                 parameters->cod_format = get_file_format(outformat);
 295                                 switch(parameters->cod_format) {
 296                                         case PGX_DFMT:
 297                                                 img_fol->out_format = "pgx";
 298                                                 break;
 299                                         case PXM_DFMT:
 300                                                 img_fol->out_format = "ppm";
 301                                                 break;
 302                                         case BMP_DFMT:
 303                                                 img_fol->out_format = "bmp";
 304                                                 break;
 305                                         case TIF_DFMT:
 306                                                 img_fol->out_format = "tif";
 307                                                 break;
 308                                         default:
 309                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx or *.bmp]!! \n");
 310                                                 return 1;
 311                                                 break;
 312                                 }
 313                         }
 314                         break;
 315
 316                                 /* ----------------------------------------------------- */
 317
 318
 319                         case 'r':               /* reduce option */
 320                         {
 321                                 sscanf(optarg, "%d", &parameters->cp_reduce);
 322                         }
 323                         break;
 324
 325                                 /* ----------------------------------------------------- */
 326
 327
 328                         case 'l':               /* layering option */
 329                         {
 330                                 sscanf(optarg, "%d", &parameters->cp_layer);
 331                         }
 332                         break;
 333
 334                                 /* ----------------------------------------------------- */
 335
 336                         case 'h':                       /* display an help description */
 337                                 decode_help_display();
 338                                 return 1;
 339
 340                                 /* ------------------------------------------------------ */
 341
 342                         case 'y':                       /* Image Directory path */
 343                                 {
 344                                         img_fol->imgdirpath = (char*)malloc(strlen(optarg) + 1);
 345                                         strcpy(img_fol->imgdirpath,optarg);
 346                                         img_fol->set_imgdir=1;
 347                                 }
 348                                 break;
 349                                 /* ----------------------------------------------------- */
 350 /* UniPG>> */
 351 #ifdef USE_JPWL
 352
 353                         case 'W':                       /* activate JPWL correction */
 354                         {
 355                                 char *token = NULL;
 356
 357                                 token = strtok(optarg, ",");
 358                                 while(token != NULL) {
 359
 360                                         /* search expected number of components */
 361                                         if (*token == 'c') {
 362
 363                                                 static int compno;
 364
 365                                                 compno = JPWL_EXPECTED_COMPONENTS; /* predefined no. of components */
 366
 367                                                 if(sscanf(token, "c=%d", &compno) == 1) {
 368                                                         /* Specified */
 369                                                         if ((compno < 1) || (compno > 256)) {
 370                                                                 fprintf(stderr, "ERROR -> invalid number of components c = %d\n", compno);
 371                                                                 return 1;
 372                                                         }
 373                                                         parameters->jpwl_exp_comps = compno;
 374
 375                                                 } else if (!strcmp(token, "c")) {
 376                                                         /* default */
 377                                                         parameters->jpwl_exp_comps = compno; /* auto for default size */
 378
 379                                                 } else {
 380                                                         fprintf(stderr, "ERROR -> invalid components specified = %s\n", token);
 381                                                         return 1;
 382                                                 };
 383                                         }
 384
 385                                         /* search maximum number of tiles */
 386                                         if (*token == 't') {
 387
 388                                                 static int tileno;
 389
 390                                                 tileno = JPWL_MAXIMUM_TILES; /* maximum no. of tiles */
 391
 392                                                 if(sscanf(token, "t=%d", &tileno) == 1) {
 393                                                         /* Specified */
 394                                                         if ((tileno < 1) || (tileno > JPWL_MAXIMUM_TILES)) {
 395                                                                 fprintf(stderr, "ERROR -> invalid number of tiles t = %d\n", tileno);
 396                                                                 return 1;
 397                                                         }
 398                                                         parameters->jpwl_max_tiles = tileno;
 399
 400                                                 } else if (!strcmp(token, "t")) {
 401                                                         /* default */
 402                                                         parameters->jpwl_max_tiles = tileno; /* auto for default size */
 403
 404                                                 } else {
 405                                                         fprintf(stderr, "ERROR -> invalid tiles specified = %s\n", token);
 406                                                         return 1;
 407                                                 };
 408                                         }
 409
 410                                         /* next token or bust */
 411                                         token = strtok(NULL, ",");
 412                                 };
 413                                 parameters->jpwl_correct = true;
 414                                 fprintf(stdout, "JPWL correction capability activated\n");
 415                                 fprintf(stdout, "- expecting %d components\n", parameters->jpwl_exp_comps);
 416                         }
 417                         break;
 418 #endif /* USE_JPWL */
 419 /* <<UniPG */
 420
 421                                 /* ----------------------------------------------------- */
 422
 423                         default:
 424                                 fprintf(stderr,"WARNING -> this option is not valid \"-%c %s\"\n",c, optarg);
 425                                 break;
 426                 }
 427         }
 428
 429         /* check for possible errors */
 430         if(img_fol->set_imgdir==1){
 431                 if(!(parameters->infile[0]==0)){
 432                         fprintf(stderr, "Error: options -ImgDir and -i cannot be used together !!\n");
 433                         return 1;
 434                 }
 435                 if(img_fol->set_out_format == 0){
 436                         fprintf(stderr, "Error: When -ImgDir is used, -OutFor <FORMAT> must be used !!\n");
 437                         fprintf(stderr, "Only one format allowed! Valid format PGM, PPM, PNM, PGX,BMP!!\n");
 438                         return 1;
 439                 }
 440                 if(!((parameters->outfile[0] == 0))){
 441                         fprintf(stderr, "Error: options -ImgDir and -o cannot be used together !!\n");
 442                         return 1;
 443                 }
 444         }else{
 445                 if((parameters->infile[0] == 0) || (parameters->outfile[0] == 0)) {
 446                         fprintf(stderr, "Error: One of option; -i or -ImgDir must be specified\n");
 447                         fprintf(stderr, "Error: When using -i; -o must be used\n");
 448                         fprintf(stderr, "usage: image_to_j2k -i *.j2k/jp2 -o *.pgm/ppm/pnm/pgx/bmp(+ options)\n");
 449                         return 1;
 450                 }
 451         }
 452
 453         return 0;
 454 }
 455
 456 /* -------------------------------------------------------------------------- */
 457
 458 /**
 459 sample error callback expecting a FILE* client object
 460 */
 461 void error_callback(const char *msg, void *client_data) {
 462         FILE *stream = (FILE*)client_data;
 463         fprintf(stream, "[ERROR] %s", msg);
 464 }
 465 /**
 466 sample warning callback expecting a FILE* client object
 467 */
 468 void warning_callback(const char *msg, void *client_data) {
 469         FILE *stream = (FILE*)client_data;
 470         fprintf(stream, "[WARNING] %s", msg);
 471 }
 472 /**
 473 sample debug callback expecting no client object
 474 */
 475 void info_callback(const char *msg, void *client_data) {
 476         (void)client_data;
 477         fprintf(stdout, "[INFO] %s", msg);
 478 }
 479
 480 /* -------------------------------------------------------------------------- */
 481
 482 int main(int argc, char **argv) {
 483         opj_dparameters_t parameters;   /* decompression parameters */
 484         img_fol_t img_fol;
 485         opj_event_mgr_t event_mgr;              /* event manager */
 486         opj_image_t *image = NULL;
 487         FILE *fsrc = NULL;
 488         unsigned char *src = NULL;
 489         int file_length;
 490         int num_images;
 491         int i,imageno;
 492         dircnt_t *dirptr;
 493         opj_dinfo_t* dinfo = NULL;      /* handle to a decompressor */
 494         opj_cio_t *cio = NULL;
 495
 496         /* configure the event callbacks (not required) */
 497         memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
 498         event_mgr.error_handler = error_callback;
 499         event_mgr.warning_handler = warning_callback;
 500         event_mgr.info_handler = info_callback;
 501
 502         /* set decoding parameters to default values */
 503         opj_set_default_decoder_parameters(&parameters);
 504
 505
 506         /* parse input and get user encoding parameters */
 507         if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol) == 1) {
 508                 return 0;
 509         }
 510
 511         if(img_fol.set_imgdir==1){
 512                 num_images=get_num_images(img_fol.imgdirpath);
 513
 514                 dirptr=(dircnt_t*)malloc(sizeof(dircnt_t));
 515                 if(dirptr){
 516                         dirptr->filename_buf = (char*)malloc(num_images*OPJ_PATH_LEN*sizeof(char));     // Stores at max 10 image file names
 517                         dirptr->filename = (char**) malloc(num_images*sizeof(char*));
 518
 519                         if(!dirptr->filename_buf){
 520                                 return 0;
 521                         }
 522                         for(i=0;i<num_images;i++){
 523                                 dirptr->filename[i] = dirptr->filename_buf + i*OPJ_PATH_LEN;
 524                         }
 525                 }
 526                 if(load_images(dirptr,img_fol.imgdirpath)==1){
 527                         return 0;
 528                 }
 529                 if (num_images==0){
 530                         fprintf(stdout,"Folder is empty\n");
 531                         return 0;
 532                 }
 533         }else{
 534                 num_images=1;
 535         }
 536
 537         /*Encoding image one by one*/
 538         for(imageno = 0; imageno < num_images ; imageno++)
 539         {
 540
 541                 image = NULL;
 542                 fprintf(stderr,"\n");
 543
 544                 if(img_fol.set_imgdir==1){
 545                         if (get_next_file(imageno, dirptr,&img_fol, &parameters)) {
 546                                 fprintf(stderr,"skipping file...\n");
 547                                 continue;
 548                         }
 549
 550                 }
 551
 552
 553                 /* read the input file and put it in memory */
 554                 /* ---------------------------------------- */
 555                 fsrc = fopen(parameters.infile, "rb");
 556                 if (!fsrc) {
 557                         fprintf(stderr, "ERROR -> failed to open %s for reading\n", parameters.infile);
 558                         return 1;
 559                 }
 560                 fseek(fsrc, 0, SEEK_END);
 561                 file_length = ftell(fsrc);
 562                 fseek(fsrc, 0, SEEK_SET);
 563                 src = (unsigned char *) malloc(file_length);
 564                 fread(src, 1, file_length, fsrc);
 565                 fclose(fsrc);
 566
 567
 568
 569                 /* decode the code-stream */
 570                 /* ---------------------- */
 571
 572                 switch(parameters.decod_format) {
 573                 case J2K_CFMT:
 574                 {
 575                         /* JPEG-2000 codestream */
 576
 577                         /* get a decoder handle */
 578                         dinfo = opj_create_decompress(CODEC_J2K);
 579
 580                         /* catch events using our callbacks and give a local context */
 581                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
 582
 583                         /* setup the decoder decoding parameters using user parameters */
 584                         opj_setup_decoder(dinfo, &parameters);
 585
 586                         /* open a byte stream */
 587                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
 588
 589                         /* decode the stream and fill the image structure */
 590                         image = opj_decode(dinfo, cio);
 591                         if(!image) {
 592                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
 593                                 opj_destroy_decompress(dinfo);
 594                                 opj_cio_close(cio);
 595                                 return 1;
 596                         }
 597
 598                         /* close the byte stream */
 599                         opj_cio_close(cio);
 600                 }
 601                 break;
 602
 603                 case JP2_CFMT:
 604                 {
 605                         /* JPEG 2000 compressed image data */
 606
 607                         /* get a decoder handle */
 608                         dinfo = opj_create_decompress(CODEC_JP2);
 609
 610                         /* catch events using our callbacks and give a local context */
 611                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
 612
 613                         /* setup the decoder decoding parameters using the current image and user parameters */
 614                         opj_setup_decoder(dinfo, &parameters);
 615
 616                         /* open a byte stream */
 617                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
 618
 619                         /* decode the stream and fill the image structure */
 620                         image = opj_decode(dinfo, cio);
 621                         if(!image) {
 622                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
 623                                 opj_destroy_decompress(dinfo);
 624                                 opj_cio_close(cio);
 625                                 return 1;
 626                         }
 627
 628                         /* close the byte stream */
 629                         opj_cio_close(cio);
 630
 631                 }
 632                 break;
 633
 634                 case JPT_CFMT:
 635                 {
 636                         /* JPEG 2000, JPIP */
 637
 638                         /* get a decoder handle */
 639                         dinfo = opj_create_decompress(CODEC_JPT);
 640
 641                         /* catch events using our callbacks and give a local context */
 642                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
 643
 644                         /* setup the decoder decoding parameters using user parameters */
 645                         opj_setup_decoder(dinfo, &parameters);
 646
 647                         /* open a byte stream */
 648                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);
 649
 650                         /* decode the stream and fill the image structure */
 651                         image = opj_decode(dinfo, cio);
 652                         if(!image) {
 653                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
 654                                 opj_destroy_decompress(dinfo);
 655                                 opj_cio_close(cio);
 656                                 return 1;
 657                         }
 658
 659                         /* close the byte stream */
 660                         opj_cio_close(cio);
 661                 }
 662                 break;
 663
 664                 default:
 665                         fprintf(stderr, "skipping file..\n");
 666                         continue;
 667         }
 668
 669                 /* free the memory containing the code-stream */
 670                 free(src);
 671                 src = NULL;
 672
 673                 /* create output image */
 674                 /* ------------------- */
 675                 switch (parameters.cod_format) {
 676                 case PXM_DFMT:                  /* PNM PGM PPM */
 677                         if (imagetopnm(image, parameters.outfile)) {
 678                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
 679                         }
 680                         else {
 681                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
 682                         }
 683                         break;
 684
 685                 case PGX_DFMT:                  /* PGX */
 686                         if(imagetopgx(image, parameters.outfile)){
 687                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
 688                         }
 689                         else {
 690                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
 691                         }
 692                         break;
 693
 694                 case BMP_DFMT:                  /* BMP */
 695                         if(imagetobmp(image, parameters.outfile)){
 696                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
 697                         }
 698                         else {
 699                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
 700                         }
 701                         break;
 702
 703                 case TIF_DFMT:                  /* TIFF */
 704                         if(imagetotif(image, parameters.outfile)){
 705                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
 706                         }
 707                         else {
 708                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
 709                         }
 710                         break;
 711                 }
 712
 713                 /* free remaining structures */
 714                 if(dinfo) {
 715                         opj_destroy_decompress(dinfo);
 716                 }
 717                 /* free image data structure */
 718                 opj_image_destroy(image);
 719
 720         }
 721         return 0;
 722 }
 723 //end main
 724