JavaOpenJPEG/JavaOpenJPEGDecoder.c

   1 /*\r
   2  * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium\r
   3  * Copyright (c) 2002-2007, Professor Benoit Macq\r
   4  * Copyright (c) 2001-2003, David Janssens\r
   5  * Copyright (c) 2002-2003, Yannick Verschueren\r
   6  * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe\r
   7  * Copyright (c) 2005, Herve Drolon, FreeImage Team\r
   8  * Copyright (c) 2006-2007, Parvatha Elangovan\r
   9  * Copyright (c) 2007, Patrick Piscaglia (Telemis)\r
  10  * All rights reserved.\r
  11  *\r
  12  * Redistribution and use in source and binary forms, with or without\r
  13  * modification, are permitted provided that the following conditions\r
  14  * are met:\r
  15  * 1. Redistributions of source code must retain the above copyright\r
  16  *    notice, this list of conditions and the following disclaimer.\r
  17  * 2. Redistributions in binary form must reproduce the above copyright\r
  18  *    notice, this list of conditions and the following disclaimer in the\r
  19  *    documentation and/or other materials provided with the distribution.\r
  20  *\r
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'\r
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE\r
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
  31  * POSSIBILITY OF SUCH DAMAGE.\r
  32  */\r
  33 #include <stdio.h>\r
  34 #include <string.h>\r
  35 #include <stdlib.h>\r
  36 #include <jni.h>\r
  37 #include <math.h>\r
  38 \r
  39 #include "openjpeg.h"\r
  40 #include "compat/getopt.h"\r
  41 #include "convert.h"\r
  42 #include "dirent.h"\r
  43 #include "org_openJpeg_OpenJPEGJavaDecoder.h"\r
  44 \r
  45 #ifndef WIN32\r
  46 #define stricmp strcasecmp\r
  47 #define strnicmp strncasecmp\r
  48 #endif\r
  49 \r
  50 /* ----------------------------------------------------------------------- */\r
  51 \r
  52 #define J2K_CFMT 0\r
  53 #define JP2_CFMT 1\r
  54 #define JPT_CFMT 2\r
  55 \r
  56 #define PXM_DFMT 10\r
  57 #define PGX_DFMT 11\r
  58 #define BMP_DFMT 12\r
  59 #define YUV_DFMT 13\r
  60 #define TIF_DFMT 14\r
  61 #define RAW_DFMT 15\r
  62 #define TGA_DFMT 16\r
  63 \r
  64 /* ----------------------------------------------------------------------- */\r
  65 \r
  66 typedef struct callback_variables {\r
  67         JNIEnv *env;\r
  68         /** 'jclass' object used to call a Java method from the C */\r
  69         jobject *jobj;\r
  70         /** 'jclass' object used to call a Java method from the C */\r
  71         jmethodID message_mid;\r
  72         jmethodID error_mid;\r
  73 } callback_variables_t;\r
  74 \r
  75 typedef struct dircnt{\r
  76         /** Buffer for holding images read from Directory*/\r
  77         char *filename_buf;\r
  78         /** Pointer to the buffer*/\r
  79         char **filename;\r
  80 }dircnt_t;\r
  81 \r
  82 \r
  83 typedef struct img_folder{\r
  84         /** The directory path of the folder containing input images*/\r
  85         char *imgdirpath;\r
  86         /** Output format*/\r
  87         char *out_format;\r
  88         /** Enable option*/\r
  89         char set_imgdir;\r
  90         /** Enable Cod Format for output*/\r
  91         char set_out_format;\r
  92 \r
  93 }img_fol_t;\r
  94 \r
  95 \r
  96 void decode_help_display() {\r
  97         fprintf(stdout,"HELP\n----\n\n");\r
  98         fprintf(stdout,"- the -h option displays this help information on screen\n\n");\r
  99 \r
 100 /* UniPG>> */\r
 101         fprintf(stdout,"List of parameters for the JPEG 2000 "\r
 102 #ifdef USE_JPWL\r
 103                 "+ JPWL "\r
 104 #endif /* USE_JPWL */\r
 105                 "decoder:\n");\r
 106 /* <<UniPG */\r
 107         fprintf(stdout,"\n");\r
 108         fprintf(stdout,"\n");\r
 109         fprintf(stdout,"  -ImgDir \n");\r
 110         fprintf(stdout,"        Image file Directory path \n");\r
 111         fprintf(stdout,"  -OutFor \n");\r
 112         fprintf(stdout,"    REQUIRED only if -ImgDir is used\n");\r
 113         fprintf(stdout,"          Need to specify only format without filename <BMP>  \n");\r
 114         fprintf(stdout,"    Currently accepts PGM, PPM, PNM, PGX, BMP format\n");\r
 115         fprintf(stdout,"  -i <compressed file>\n");\r
 116         fprintf(stdout,"    REQUIRED only if an Input image directory not specified\n");\r
 117         fprintf(stdout,"    Currently accepts J2K-files, JP2-files and JPT-files. The file type\n");\r
 118         fprintf(stdout,"    is identified based on its suffix.\n");\r
 119         fprintf(stdout,"  -o <decompressed file>\n");\r
 120         fprintf(stdout,"    REQUIRED\n");\r
 121         fprintf(stdout,"    Currently accepts PGM-files, PPM-files, PNM-files, PGX-files and\n");\r
 122         fprintf(stdout,"    BMP-files. Binary data is written to the file (not ascii). If a PGX\n");\r
 123         fprintf(stdout,"    filename is given, there will be as many output files as there are\n");\r
 124         fprintf(stdout,"    components: an indice starting from 0 will then be appended to the\n");\r
 125         fprintf(stdout,"    output filename, just before the \"pgx\" extension. If a PGM filename\n");\r
 126         fprintf(stdout,"    is given and there are more than one component, only the first component\n");\r
 127         fprintf(stdout,"    will be written to the file.\n");\r
 128         fprintf(stdout,"  -r <reduce factor>\n");\r
 129         fprintf(stdout,"    Set the number of highest resolution levels to be discarded. The\n");\r
 130         fprintf(stdout,"    image resolution is effectively divided by 2 to the power of the\n");\r
 131         fprintf(stdout,"    number of discarded levels. The reduce factor is limited by the\n");\r
 132         fprintf(stdout,"    smallest total number of decomposition levels among tiles.\n");\r
 133         fprintf(stdout,"  -l <number of quality layers to decode>\n");\r
 134         fprintf(stdout,"    Set the maximum number of quality layers to decode. If there are\n");\r
 135         fprintf(stdout,"    less quality layers than the specified number, all the quality layers\n");\r
 136         fprintf(stdout,"    are decoded.\n");\r
 137 /* UniPG>> */\r
 138 #ifdef USE_JPWL\r
 139         fprintf(stdout,"  -W <options>\n");\r
 140         fprintf(stdout,"    Activates the JPWL correction capability, if the codestream complies.\n");\r
 141         fprintf(stdout,"    Options can be a comma separated list of <param=val> tokens:\n");\r
 142         fprintf(stdout,"    c, c=numcomps\n");\r
 143         fprintf(stdout,"       numcomps is the number of expected components in the codestream\n");\r
 144         fprintf(stdout,"       (search of first EPB rely upon this, default is %d)\n", JPWL_EXPECTED_COMPONENTS);\r
 145 #endif /* USE_JPWL */\r
 146 /* <<UniPG */\r
 147         fprintf(stdout,"\n");\r
 148 }\r
 149 \r
 150 /* -------------------------------------------------------------------------- */\r
 151 \r
 152 int get_num_images(char *imgdirpath){\r
 153         DIR *dir;\r
 154         struct dirent* content; \r
 155         int num_images = 0;\r
 156 \r
 157         /*Reading the input images from given input directory*/\r
 158 \r
 159         dir= opendir(imgdirpath);\r
 160         if(!dir){\r
 161                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);\r
 162                 return 0;\r
 163         }\r
 164         \r
 165         while((content=readdir(dir))!=NULL){\r
 166                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )\r
 167                         continue;\r
 168                 num_images++;\r
 169         }\r
 170         return num_images;\r
 171 }\r
 172 \r
 173 int load_images(dircnt_t *dirptr, char *imgdirpath){\r
 174         DIR *dir;\r
 175         struct dirent* content; \r
 176         int i = 0;\r
 177 \r
 178         /*Reading the input images from given input directory*/\r
 179 \r
 180         dir= opendir(imgdirpath);\r
 181         if(!dir){\r
 182                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);\r
 183                 return 1;\r
 184         }else   {\r
 185                 fprintf(stderr,"Folder opened successfully\n");\r
 186         }\r
 187         \r
 188         while((content=readdir(dir))!=NULL){\r
 189                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )\r
 190                         continue;\r
 191 \r
 192                 strcpy(dirptr->filename[i],content->d_name);\r
 193                 i++;\r
 194         }\r
 195         return 0;       \r
 196 }\r
 197 \r
 198 int get_file_format(char *filename) {\r
 199         unsigned int i;\r
 200         static const char *extension[] = {"pgx", "pnm", "pgm", "ppm", "bmp","tif", "raw", "tga", "j2k", "jp2", "jpt", "j2c" };\r
 201         static const int format[] = { PGX_DFMT, PXM_DFMT, PXM_DFMT, PXM_DFMT, BMP_DFMT, TIF_DFMT, RAW_DFMT, TGA_DFMT, J2K_CFMT, JP2_CFMT, JPT_CFMT, J2K_CFMT };\r
 202         char * ext = strrchr(filename, '.');\r
 203         if (ext == NULL)\r
 204                 return -1;\r
 205         ext++;\r
 206         if(ext) {\r
 207                 for(i = 0; i < sizeof(format)/sizeof(*format); i++) {\r
 208                         if(strnicmp(ext, extension[i], 3) == 0) {\r
 209                                 return format[i];\r
 210                         }\r
 211                 }\r
 212         }\r
 213 \r
 214         return -1;\r
 215 }\r
 216 \r
 217 \r
 218 /* -------------------------------------------------------------------------- */\r
 219 \r
 220 int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *parameters,img_fol_t *img_fol) {\r
 221         /* parse the command line */\r
 222         int totlen;\r
 223         option_t long_option[]={\r
 224                 {"ImgDir",REQ_ARG, NULL ,'y'},\r
 225                 {"OutFor",REQ_ARG, NULL ,'O'},\r
 226         };\r
 227 \r
 228 /* UniPG>> */\r
 229         const char optlist[] = "i:o:r:l:hx:"\r
 230 \r
 231 #ifdef USE_JPWL\r
 232                                         "W:"\r
 233 #endif /* USE_JPWL */\r
 234                                         ;\r
 235         /*for (i=0; i<argc; i++) {\r
 236                 printf("[%s]",argv[i]);\r
 237         }\r
 238         printf("\n");*/\r
 239 \r
 240 /* <<UniPG */\r
 241         totlen=sizeof(long_option);\r
 242         img_fol->set_out_format = 0;\r
 243         reset_options_reading();\r
 244 \r
 245         while (1) {\r
 246                 int c = getopt_long(argc, argv,optlist,long_option,totlen);\r
 247                 if (c == -1)\r
 248                         break;\r
 249                 switch (c) {\r
 250                         case 'i':                       /* input file */\r
 251                         {\r
 252                                 char *infile = optarg;\r
 253                                 parameters->decod_format = get_file_format(infile);\r
 254                                 switch(parameters->decod_format) {\r
 255                                         case J2K_CFMT:\r
 256                                         case JP2_CFMT:\r
 257                                         case JPT_CFMT:\r
 258                                                 break;\r
 259                                         default:\r
 260                                                 fprintf(stderr, \r
 261                                                         "!! Unrecognized format for infile : %s [accept only *.j2k, *.jp2, *.jpc or *.jpt] !!\n\n", \r
 262                                                         infile);\r
 263                                                 return 1;\r
 264                                 }\r
 265                                 strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);\r
 266                         }\r
 267                         break;\r
 268                                 \r
 269                                 /* ----------------------------------------------------- */\r
 270 \r
 271                         case 'o':                       /* output file */\r
 272                         {\r
 273                                 char *outfile = optarg;\r
 274                                 parameters->cod_format = get_file_format(outfile);\r
 275                                 switch(parameters->cod_format) {\r
 276                                         case PGX_DFMT:\r
 277                                         case PXM_DFMT:\r
 278                                         case BMP_DFMT:\r
 279                                         case TIF_DFMT:\r
 280                                         case RAW_DFMT:\r
 281                                         case TGA_DFMT:\r
 282                                                 break;\r
 283                                         default:\r
 284                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx, *.bmp, *.tif, *.raw or *.tga]!! \n", outfile);\r
 285                                                 return 1;\r
 286                                 }\r
 287                                 strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);\r
 288                         }\r
 289                         break;\r
 290                         \r
 291                                 /* ----------------------------------------------------- */\r
 292 \r
 293                         case 'O':                       /* output format */\r
 294                         {\r
 295                                 char outformat[50];\r
 296                                 char *of = optarg;\r
 297                                 sprintf(outformat,".%s",of);\r
 298                                 img_fol->set_out_format = 1;\r
 299                                 parameters->cod_format = get_file_format(outformat);\r
 300                                 switch(parameters->cod_format) {\r
 301                                         case PGX_DFMT:\r
 302                                                 img_fol->out_format = "pgx";\r
 303                                                 break;\r
 304                                         case PXM_DFMT:\r
 305                                                 img_fol->out_format = "ppm";\r
 306                                                 break;\r
 307                                         case BMP_DFMT:\r
 308                                                 img_fol->out_format = "bmp";\r
 309                                                 break;\r
 310                                         case TIF_DFMT:\r
 311                                                 img_fol->out_format = "tif";\r
 312                                                 break;\r
 313                                         case RAW_DFMT:\r
 314                                                 img_fol->out_format = "raw";\r
 315                                                 break;\r
 316                                         case TGA_DFMT:\r
 317                                                 img_fol->out_format = "raw";\r
 318                                                 break;\r
 319                                         default:\r
 320                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx, *.bmp, *.tif, *.raw or *.tga]!! \n", outformat);\r
 321                                                 return 1;\r
 322                                                 break;\r
 323                                 }\r
 324                         }\r
 325                         break;\r
 326 \r
 327                                 /* ----------------------------------------------------- */\r
 328 \r
 329 \r
 330                         case 'r':               /* reduce option */\r
 331                         {\r
 332                                 sscanf(optarg, "%d", &parameters->cp_reduce);\r
 333                         }\r
 334                         break;\r
 335                         \r
 336                                 /* ----------------------------------------------------- */\r
 337       \r
 338 \r
 339                         case 'l':               /* layering option */\r
 340                         {\r
 341                                 sscanf(optarg, "%d", &parameters->cp_layer);\r
 342                         }\r
 343                         break;\r
 344                         \r
 345                                 /* ----------------------------------------------------- */\r
 346 \r
 347                         case 'h':                       /* display an help description */\r
 348                                 decode_help_display();\r
 349                                 return 1;                               \r
 350 \r
 351                                 /* ------------------------------------------------------ */\r
 352 \r
 353                         case 'y':                       /* Image Directory path */\r
 354                                 {\r
 355                                         img_fol->imgdirpath = (char*)malloc(strlen(optarg) + 1);\r
 356                                         strcpy(img_fol->imgdirpath,optarg);\r
 357                                         img_fol->set_imgdir=1;\r
 358                                 }\r
 359                                 break;\r
 360                                 /* ----------------------------------------------------- */\r
 361 /* UniPG>> */\r
 362 #ifdef USE_JPWL\r
 363                         \r
 364                         case 'W':                       /* activate JPWL correction */\r
 365                         {\r
 366                                 char *token = NULL;\r
 367 \r
 368                                 token = strtok(optarg, ",");\r
 369                                 while(token != NULL) {\r
 370 \r
 371                                         /* search expected number of components */\r
 372                                         if (*token == 'c') {\r
 373 \r
 374                                                 static int compno;\r
 375 \r
 376                                                 compno = JPWL_EXPECTED_COMPONENTS; /* predefined no. of components */\r
 377 \r
 378                                                 if(sscanf(token, "c=%d", &compno) == 1) {\r
 379                                                         /* Specified */\r
 380                                                         if ((compno < 1) || (compno > 256)) {\r
 381                                                                 fprintf(stderr, "ERROR -> invalid number of components c = %d\n", compno);\r
 382                                                                 return 1;\r
 383                                                         }\r
 384                                                         parameters->jpwl_exp_comps = compno;\r
 385 \r
 386                                                 } else if (!strcmp(token, "c")) {\r
 387                                                         /* default */\r
 388                                                         parameters->jpwl_exp_comps = compno; /* auto for default size */\r
 389 \r
 390                                                 } else {\r
 391                                                         fprintf(stderr, "ERROR -> invalid components specified = %s\n", token);\r
 392                                                         return 1;\r
 393                                                 };\r
 394                                         }\r
 395 \r
 396                                         /* search maximum number of tiles */\r
 397                                         if (*token == 't') {\r
 398 \r
 399                                                 static int tileno;\r
 400 \r
 401                                                 tileno = JPWL_MAXIMUM_TILES; /* maximum no. of tiles */\r
 402 \r
 403                                                 if(sscanf(token, "t=%d", &tileno) == 1) {\r
 404                                                         /* Specified */\r
 405                                                         if ((tileno < 1) || (tileno > JPWL_MAXIMUM_TILES)) {\r
 406                                                                 fprintf(stderr, "ERROR -> invalid number of tiles t = %d\n", tileno);\r
 407                                                                 return 1;\r
 408                                                         }\r
 409                                                         parameters->jpwl_max_tiles = tileno;\r
 410 \r
 411                                                 } else if (!strcmp(token, "t")) {\r
 412                                                         /* default */\r
 413                                                         parameters->jpwl_max_tiles = tileno; /* auto for default size */\r
 414 \r
 415                                                 } else {\r
 416                                                         fprintf(stderr, "ERROR -> invalid tiles specified = %s\n", token);\r
 417                                                         return 1;\r
 418                                                 };\r
 419                                         }\r
 420 \r
 421                                         /* next token or bust */\r
 422                                         token = strtok(NULL, ",");\r
 423                                 };\r
 424                                 parameters->jpwl_correct = true;\r
 425                                 fprintf(stdout, "JPWL correction capability activated\n");\r
 426                                 fprintf(stdout, "- expecting %d components\n", parameters->jpwl_exp_comps);\r
 427                         }\r
 428                         break;  \r
 429 #endif /* USE_JPWL */\r
 430 /* <<UniPG */            \r
 431 \r
 432                                 /* ----------------------------------------------------- */\r
 433                         \r
 434                         default:\r
 435                                 fprintf(stderr,"WARNING -> this option is not valid \"-%c %s\"\n",c, optarg);\r
 436                                 break;\r
 437                 }\r
 438         }\r
 439 \r
 440         /* No check for possible errors before the -i and -o options are of course not mandatory*/\r
 441 \r
 442         return 0;\r
 443 }\r
 444 \r
 445 /* -------------------------------------------------------------------------- */\r
 446 \r
 447 /**\r
 448 error callback returning the message to Java andexpecting a callback_variables_t client object\r
 449 */\r
 450 void error_callback(const char *msg, void *client_data) {\r
 451         callback_variables_t* vars = (callback_variables_t*) client_data;\r
 452         JNIEnv *env = vars->env;\r
 453         jstring jbuffer;\r
 454 \r
 455         jbuffer = (*env)->NewStringUTF(env, msg);\r
 456         (*env)->ExceptionClear(env);\r
 457         (*env)->CallVoidMethod(env, *(vars->jobj), vars->error_mid, jbuffer);\r
 458 \r
 459         if ((*env)->ExceptionOccurred(env)) {\r
 460                 fprintf(stderr,"C: Exception during call back method\n");\r
 461                 (*env)->ExceptionDescribe(env);\r
 462                 (*env)->ExceptionClear(env);\r
 463         }\r
 464         (*env)->DeleteLocalRef(env, jbuffer);\r
 465 }\r
 466 /**\r
 467 warning callback returning the message to Java andexpecting a callback_variables_t client object\r
 468 */\r
 469 void warning_callback(const char *msg, void *client_data) {\r
 470         callback_variables_t* vars = (callback_variables_t*) client_data;\r
 471         JNIEnv *env = vars->env;\r
 472         jstring jbuffer;\r
 473 \r
 474         jbuffer = (*env)->NewStringUTF(env, msg);\r
 475         (*env)->ExceptionClear(env);\r
 476         (*env)->CallVoidMethod(env, *(vars->jobj), vars->message_mid, jbuffer);\r
 477         \r
 478         if ((*env)->ExceptionOccurred(env)) {\r
 479                 fprintf(stderr,"C: Exception during call back method\n");\r
 480                 (*env)->ExceptionDescribe(env);\r
 481                 (*env)->ExceptionClear(env);\r
 482         }\r
 483         (*env)->DeleteLocalRef(env, jbuffer);\r
 484 }\r
 485 /**\r
 486 information callback returning the message to Java andexpecting a callback_variables_t client object\r
 487 */\r
 488 void info_callback(const char *msg, void *client_data) {\r
 489         callback_variables_t* vars = (callback_variables_t*) client_data;\r
 490         JNIEnv *env = vars->env;\r
 491         jstring jbuffer;\r
 492 \r
 493         jbuffer = (*env)->NewStringUTF(env, msg);\r
 494         (*env)->ExceptionClear(env);\r
 495         (*env)->CallVoidMethod(env, *(vars->jobj), vars->message_mid, jbuffer);\r
 496 \r
 497         if ((*env)->ExceptionOccurred(env)) {\r
 498                 fprintf(stderr,"C: Exception during call back method\n");\r
 499                 (*env)->ExceptionDescribe(env);\r
 500                 (*env)->ExceptionClear(env);\r
 501         }\r
 502         (*env)->DeleteLocalRef(env, jbuffer);\r
 503 }\r
 504 \r
 505 \r
 506 /* --------------------------------------------------------------------------\r
 507    --------------------   MAIN METHOD, CALLED BY JAVA -----------------------*/\r
 508 JNIEXPORT jint JNICALL Java_org_openJpeg_OpenJPEGJavaDecoder_internalDecodeJ2KtoImage(JNIEnv *env, jobject obj, jobjectArray javaParameters) {\r
 509         int argc;               /* To simulate the command line parameters (taken from the javaParameters variable) and be able to re-use the */\r
 510         char **argv;    /*  'parse_cmdline_decoder' method taken from the j2k_to_image project */\r
 511         opj_dparameters_t parameters;   /* decompression parameters */\r
 512         img_fol_t img_fol;\r
 513         opj_event_mgr_t event_mgr;              /* event manager */\r
 514         opj_image_t *image = NULL;\r
 515         FILE *fsrc = NULL;\r
 516         unsigned char *src = NULL;\r
 517         int file_length;\r
 518         int num_images;\r
 519         int i,j,imageno;\r
 520         opj_dinfo_t* dinfo = NULL;      /* handle to a decompressor */\r
 521         opj_cio_t *cio = NULL;\r
 522         int w,h;\r
 523         long min_value, max_value;\r
 524         short tempS; unsigned char tempUC, tempUC1, tempUC2;\r
 525         // ==> Access variables to the Java member variables\r
 526         jsize           arraySize;\r
 527         jclass          cls;\r
 528         jobject         object;\r
 529         jboolean        isCopy;\r
 530         jfieldID        fid;\r
 531         jbyteArray      jba;\r
 532         jshortArray jsa;\r
 533         jintArray       jia;\r
 534         jbyte           *jbBody, *ptrBBody;\r
 535         jshort          *jsBody, *ptrSBody;\r
 536         jint            *jiBody, *ptrIBody;\r
 537         callback_variables_t msgErrorCallback_vars;\r
 538         // <=== access variable to Java member variables */\r
 539         int *ptr, *ptr1, *ptr2;                         // <== To transfer the decoded image to Java\r
 540 \r
 541         /* configure the event callbacks */\r
 542         memset(&event_mgr, 0, sizeof(opj_event_mgr_t)); \r
 543         event_mgr.error_handler = error_callback;\r
 544         event_mgr.warning_handler = warning_callback;\r
 545         event_mgr.info_handler = info_callback;\r
 546 \r
 547         // JNI reference to the calling class\r
 548         cls = (*env)->GetObjectClass(env, obj);\r
 549 \r
 550         // Pointers to be able to call a Java method for all the info and error messages\r
 551         msgErrorCallback_vars.env = env;\r
 552         msgErrorCallback_vars.jobj = &obj;\r
 553         msgErrorCallback_vars.message_mid = (*env)->GetMethodID(env, cls, "logMessage", "(Ljava/lang/String;)V");\r
 554         msgErrorCallback_vars.error_mid = (*env)->GetMethodID(env, cls, "logError", "(Ljava/lang/String;)V");\r
 555 \r
 556         // Get the String[] containing the parameters, and converts it into a char** to simulate command line arguments.\r
 557         arraySize = (*env)->GetArrayLength(env, javaParameters);\r
 558         argc = (int) arraySize +1;\r
 559         argv = malloc(argc*sizeof(char*));\r
 560         argv[0] = "ProgramName.exe";    // The program name: useless\r
 561         j=0;\r
 562         for (i=1; i<argc; i++) {\r
 563                 object = (*env)->GetObjectArrayElement(env, javaParameters, i-1);\r
 564                 argv[i] = (*env)->GetStringUTFChars(env, object, &isCopy);\r
 565         }\r
 566 \r
 567         /*printf("C: decoder params = ");\r
 568         for (i=0; i<argc; i++) {\r
 569                 printf("[%s]",argv[i]);\r
 570         }\r
 571         printf("\n");*/\r
 572 \r
 573         /* set decoding parameters to default values */\r
 574         opj_set_default_decoder_parameters(&parameters);\r
 575         parameters.decod_format = J2K_CFMT;\r
 576 \r
 577         /* parse input and get user encoding parameters */\r
 578         if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol) == 1) {\r
 579                 // Release the Java arguments array\r
 580                 for (i=1; i<argc; i++)\r
 581                         (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, javaParameters, i-1), argv[i]);\r
 582                 return -1;\r
 583         }\r
 584         // Release the Java arguments array\r
 585         for (i=1; i<argc; i++)\r
 586                 (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, javaParameters, i-1), argv[i]);\r
 587 \r
 588         num_images=1;\r
 589 \r
 590         // Get additional information from the Java object variables\r
 591         fid = (*env)->GetFieldID(env, cls,"skippedResolutions", "I");\r
 592         parameters.cp_reduce = (short) (*env)->GetIntField(env, obj, fid);\r
 593 \r
 594         /*Decoding image one by one*/\r
 595         for(imageno = 0; imageno < num_images ; imageno++)\r
 596         {\r
 597                 image = NULL;\r
 598                 fprintf(stderr,"\n");\r
 599 \r
 600                 /* read the input file and put it in memory into the 'src' object, if the -i option is given in JavaParameters.\r
 601                    Implemented for debug purpose. */\r
 602                 /* -------------------------------------------------------------- */\r
 603                 if (parameters.infile && parameters.infile[0]!='\0') {\r
 604                         //printf("C: opening [%s]\n", parameters.infile);\r
 605                         fsrc = fopen(parameters.infile, "rb");\r
 606                         if (!fsrc) {\r
 607                                 fprintf(stderr, "ERROR -> failed to open %s for reading\n", parameters.infile);\r
 608                                 return 1;\r
 609                         }\r
 610                         fseek(fsrc, 0, SEEK_END);\r
 611                         file_length = ftell(fsrc);\r
 612                         fseek(fsrc, 0, SEEK_SET);\r
 613                         src = (unsigned char *) malloc(file_length);\r
 614                         fread(src, 1, file_length, fsrc);\r
 615                         fclose(fsrc);\r
 616                         //printf("C: %d bytes read from file\n",file_length);\r
 617                 } else {\r
 618                         // Preparing the transfer of the codestream from Java to C\r
 619                         //printf("C: before transfering codestream\n");\r
 620                         fid = (*env)->GetFieldID(env, cls,"compressedStream", "[B");\r
 621                         jba = (*env)->GetObjectField(env, obj, fid);\r
 622                         file_length = (*env)->GetArrayLength(env, jba);\r
 623                         jbBody = (*env)->GetByteArrayElements(env, jba, &isCopy);\r
 624                         src = (unsigned char*)jbBody;\r
 625                 }\r
 626 \r
 627                 /* decode the code-stream */\r
 628                 /* ---------------------- */\r
 629 \r
 630                 switch(parameters.decod_format) {\r
 631                 case J2K_CFMT:\r
 632                 {\r
 633                         /* JPEG-2000 codestream */\r
 634 \r
 635                         /* get a decoder handle */\r
 636                         dinfo = opj_create_decompress(CODEC_J2K);\r
 637 \r
 638                         /* catch events using our callbacks and give a local context */\r
 639                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, &msgErrorCallback_vars);\r
 640 \r
 641                         /* setup the decoder decoding parameters using user parameters */\r
 642                         opj_setup_decoder(dinfo, &parameters);\r
 643 \r
 644                         /* open a byte stream */\r
 645                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);\r
 646 \r
 647                         /* decode the stream and fill the image structure */\r
 648                         image = opj_decode(dinfo, cio);\r
 649                         if(!image) {\r
 650                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");\r
 651                                 opj_destroy_decompress(dinfo);\r
 652                                 opj_cio_close(cio);\r
 653                                 return 1;\r
 654                         }\r
 655 \r
 656                         /* close the byte stream */\r
 657                         opj_cio_close(cio);\r
 658                 }\r
 659                 break;\r
 660 \r
 661                 case JP2_CFMT:\r
 662                 {\r
 663                         /* JPEG 2000 compressed image data */\r
 664 \r
 665                         /* get a decoder handle */\r
 666                         dinfo = opj_create_decompress(CODEC_JP2);\r
 667 \r
 668                         /* catch events using our callbacks and give a local context */\r
 669                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, &msgErrorCallback_vars);\r
 670 \r
 671                         /* setup the decoder decoding parameters using the current image and user parameters */\r
 672                         opj_setup_decoder(dinfo, &parameters);\r
 673 \r
 674                         /* open a byte stream */\r
 675                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);\r
 676 \r
 677                         /* decode the stream and fill the image structure */\r
 678                         image = opj_decode(dinfo, cio);\r
 679                         if(!image) {\r
 680                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");\r
 681                                 opj_destroy_decompress(dinfo);\r
 682                                 opj_cio_close(cio);\r
 683                                 return 1;\r
 684                         }\r
 685 \r
 686                         /* close the byte stream */\r
 687                         opj_cio_close(cio);\r
 688 \r
 689                 }\r
 690                 break;\r
 691 \r
 692                 case JPT_CFMT:\r
 693                 {\r
 694                         /* JPEG 2000, JPIP */\r
 695 \r
 696                         /* get a decoder handle */\r
 697                         dinfo = opj_create_decompress(CODEC_JPT);\r
 698 \r
 699                         /* catch events using our callbacks and give a local context */\r
 700                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, &msgErrorCallback_vars);\r
 701 \r
 702                         /* setup the decoder decoding parameters using user parameters */\r
 703                         opj_setup_decoder(dinfo, &parameters);\r
 704 \r
 705                         /* open a byte stream */\r
 706                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);\r
 707 \r
 708                         /* decode the stream and fill the image structure */\r
 709                         image = opj_decode(dinfo, cio);\r
 710                         if(!image) {\r
 711                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");\r
 712                                 opj_destroy_decompress(dinfo);\r
 713                                 opj_cio_close(cio);\r
 714                                 return 1;\r
 715                         }\r
 716 \r
 717                         /* close the byte stream */\r
 718                         opj_cio_close(cio);\r
 719                 }\r
 720                 break;\r
 721 \r
 722                 default:\r
 723                         fprintf(stderr, "skipping file..\n");\r
 724                         continue;\r
 725         }\r
 726 \r
 727                 /* free the memory containing the code-stream */\r
 728                 if (parameters.infile && parameters.infile[0]!='\0') {\r
 729                         free(src);\r
 730                 } else {\r
 731                         (*env)->ReleaseByteArrayElements(env, jba, jbBody, 0);\r
 732                 }\r
 733                 src = NULL;\r
 734 \r
 735                 /* create output image.\r
 736                         If the -o parameter is given in the JavaParameters, write the decoded version into a file.\r
 737                         Implemented for debug purpose. */\r
 738                 /* ---------------------------------- */\r
 739                 switch (parameters.cod_format) {\r
 740                 case PXM_DFMT:                  /* PNM PGM PPM */\r
 741                         if (imagetopnm(image, parameters.outfile)) {\r
 742                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);\r
 743                         }\r
 744                         else {\r
 745                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);\r
 746                         }\r
 747                         break;\r
 748 \r
 749                 case PGX_DFMT:                  /* PGX */\r
 750                         if(imagetopgx(image, parameters.outfile)){\r
 751                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);\r
 752                         }\r
 753                         else {\r
 754                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);\r
 755                         }\r
 756                         break;\r
 757 \r
 758                 case BMP_DFMT:                  /* BMP */\r
 759                         if(imagetobmp(image, parameters.outfile)){\r
 760                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);\r
 761                         }\r
 762                         else {\r
 763                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);\r
 764                         }\r
 765                         break;\r
 766 \r
 767                 }\r
 768 \r
 769                 // ========= Return the image to the Java structure ===============\r
 770 #ifdef CHECK_THRESHOLDS\r
 771                 printf("C: checking thresholds\n");\r
 772 #endif\r
 773                 // First compute the real with and height, in function of the resolutions decoded.\r
 774                 //wr = (image->comps[0].w + (1 << image->comps[0].factor) -1) >> image->comps[0].factor;\r
 775                 //hr = (image->comps[0].h + (1 << image->comps[0].factor) -1) >> image->comps[0].factor;\r
 776                 w = image->comps[0].w;\r
 777                 h = image->comps[0].h;\r
 778 \r
 779                 if (image->numcomps==3) {       // 3 components color image\r
 780                         ptr = image->comps[0].data;\r
 781                         ptr1 = image->comps[1].data;\r
 782                         ptr2 = image->comps[2].data;\r
 783 #ifdef CHECK_THRESHOLDS \r
 784                         if (image->comps[0].sgnd) {\r
 785                                 min_value = -128;\r
 786                                 max_value = 127;\r
 787                         } else {\r
 788                                 min_value = 0;\r
 789                                 max_value = 255;\r
 790                         }\r
 791 #endif                  \r
 792                         // Get the pointer to the Java structure where the data must be copied\r
 793                         fid = (*env)->GetFieldID(env, cls,"image24", "[I");\r
 794                         jia = (*env)->GetObjectField(env, obj, fid);\r
 795                         jiBody = (*env)->GetIntArrayElements(env, jia, 0);\r
 796                         ptrIBody = jiBody;\r
 797                         printf("C: transfering image24: %d int to Java pointer=%d\n",image->numcomps*w*h, ptrIBody);\r
 798 \r
 799                         for (i=0; i<w*h; i++) {\r
 800                                 tempUC = (unsigned char)(ptr[i]);\r
 801                                 tempUC1 = (unsigned char)(ptr1[i]);\r
 802                                 tempUC2 = (unsigned char)(ptr2[i]);\r
 803 #ifdef CHECK_THRESHOLDS\r
 804                                 if (tempUC < min_value)\r
 805                                         tempUC=min_value;\r
 806                                 else if (tempUC > max_value)\r
 807                                         tempUC=max_value;\r
 808                                 if (tempUC1 < min_value)\r
 809                                         tempUC1=min_value;\r
 810                                 else if (tempUC1 > max_value)\r
 811                                         tempUC1=max_value;\r
 812                                 if (tempUC2 < min_value)\r
 813                                         tempUC2=min_value;\r
 814                                 else if (tempUC2 > max_value)\r
 815                                         tempUC2=max_value;\r
 816 #endif\r
 817                                 *(ptrIBody++)  = (int) ( (tempUC2<<16) + (tempUC1<<8) + tempUC );\r
 818                         }\r
 819                         (*env)->ReleaseIntArrayElements(env, jia, jiBody, 0);\r
 820 \r
 821                 } else {        // 1 component 8 or 16 bpp image\r
 822                         ptr = image->comps[0].data;\r
 823                         printf("C: before transfering a %d bpp image to java (length = %d)\n",image->comps[0].prec ,w*h);\r
 824                         if (image->comps[0].prec<=8) {\r
 825                                 fid = (*env)->GetFieldID(env, cls,"image8", "[B");\r
 826                                 jba = (*env)->GetObjectField(env, obj, fid);\r
 827                                 jbBody = (*env)->GetByteArrayElements(env, jba, 0);\r
 828                                 ptrBBody = jbBody;\r
 829 #ifdef CHECK_THRESHOLDS \r
 830                                 if (image->comps[0].sgnd) {\r
 831                                         min_value = -128;\r
 832                                         max_value = 127;\r
 833                                 } else {\r
 834                                         min_value = 0;\r
 835                                         max_value = 255;\r
 836                                 }\r
 837 #endif                                                          \r
 838                                 //printf("C: transfering %d shorts to Java image8 pointer = %d\n", wr*hr,ptrSBody);\r
 839                                 for (i=0; i<w*h; i++) {\r
 840                                         tempUC = (unsigned char) (ptr[i]);\r
 841 #ifdef CHECK_THRESHOLDS\r
 842                                         if (tempUC<min_value)\r
 843                                                 tempUC = min_value;\r
 844                                         else if (tempUC > max_value)\r
 845                                                 tempUC = max_value;\r
 846 #endif\r
 847                                         *(ptrBBody++) = tempUC;\r
 848                                 }\r
 849                                 (*env)->ReleaseByteArrayElements(env, jba, jbBody, 0);\r
 850                                 printf("C: image8 transfered to Java\n");\r
 851                         } else {\r
 852                                 fid = (*env)->GetFieldID(env, cls,"image16", "[S");\r
 853                                 jsa = (*env)->GetObjectField(env, obj, fid);\r
 854                                 jsBody = (*env)->GetShortArrayElements(env, jsa, 0);\r
 855                                 ptrSBody = jsBody;\r
 856 #ifdef CHECK_THRESHOLDS \r
 857                                 if (image->comps[0].sgnd) {\r
 858                                         min_value = -32768;\r
 859                                         max_value = 32767;\r
 860                                 } else {\r
 861                                         min_value = 0;\r
 862                                         max_value = 65535;\r
 863                                 }\r
 864                                 printf("C: minValue = %d, maxValue = %d\n", min_value, max_value);\r
 865 #endif                          \r
 866                                 printf("C: transfering %d shorts to Java image16 pointer = %d\n", w*h,ptrSBody);\r
 867                                 for (i=0; i<w*h; i++) {\r
 868                                         tempS = (short) (ptr[i]);\r
 869 #ifdef CHECK_THRESHOLDS\r
 870                                         if (tempS<min_value) {\r
 871                                                 printf("C: value %d truncated to %d\n", tempS, min_value);\r
 872                                                 tempS = min_value;\r
 873                                         } else if (tempS > max_value) {\r
 874                                                 printf("C: value %d truncated to %d\n", tempS, max_value);\r
 875                                                 tempS = max_value;\r
 876                                         }\r
 877 #endif\r
 878                                         *(ptrSBody++) = tempS;\r
 879                                 }\r
 880                                 (*env)->ReleaseShortArrayElements(env, jsa, jsBody, 0);\r
 881                                 printf("C: image16 completely filled\n");\r
 882                         }\r
 883                 }       \r
 884 \r
 885 \r
 886                 /* free remaining structures */\r
 887                 if(dinfo) {\r
 888                         opj_destroy_decompress(dinfo);\r
 889                 }\r
 890                 /* free image data structure */\r
 891                 opj_image_destroy(image);\r
 892 \r
 893         }\r
 894         return 1; /* OK */\r
 895 }\r
 896 //end main\r
 897 \r