wrapping/java/openjp2/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 "opj_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 #include "format_defs.h"\r
  51 \r
  52 typedef struct callback_variables {\r
  53         JNIEnv *env;\r
  54         /** 'jclass' object used to call a Java method from the C */\r
  55         jobject *jobj;\r
  56         /** 'jclass' object used to call a Java method from the C */\r
  57         jmethodID message_mid;\r
  58         jmethodID error_mid;\r
  59 } callback_variables_t;\r
  60 \r
  61 typedef struct dircnt{\r
  62         /** Buffer for holding images read from Directory*/\r
  63         char *filename_buf;\r
  64         /** Pointer to the buffer*/\r
  65         char **filename;\r
  66 }dircnt_t;\r
  67 \r
  68 \r
  69 typedef struct img_folder{\r
  70         /** The directory path of the folder containing input images*/\r
  71         char *imgdirpath;\r
  72         /** Output format*/\r
  73         char *out_format;\r
  74         /** Enable option*/\r
  75         char set_imgdir;\r
  76         /** Enable Cod Format for output*/\r
  77         char set_out_format;\r
  78 \r
  79 }img_fol_t;\r
  80 \r
  81 \r
  82 void decode_help_display() {\r
  83         fprintf(stdout,"HELP\n----\n\n");\r
  84         fprintf(stdout,"- the -h option displays this help information on screen\n\n");\r
  85 \r
  86 /* UniPG>> */\r
  87         fprintf(stdout,"List of parameters for the JPEG 2000 "\r
  88 #ifdef USE_JPWL\r
  89                 "+ JPWL "\r
  90 #endif /* USE_JPWL */\r
  91                 "decoder:\n");\r
  92 /* <<UniPG */\r
  93         fprintf(stdout,"\n");\r
  94         fprintf(stdout,"\n");\r
  95         fprintf(stdout,"  -ImgDir \n");\r
  96         fprintf(stdout,"        Image file Directory path \n");\r
  97         fprintf(stdout,"  -OutFor \n");\r
  98         fprintf(stdout,"    REQUIRED only if -ImgDir is used\n");\r
  99         fprintf(stdout,"          Need to specify only format without filename <BMP>  \n");\r
 100         fprintf(stdout,"    Currently accepts PGM, PPM, PNM, PGX, BMP format\n");\r
 101         fprintf(stdout,"  -i <compressed file>\n");\r
 102         fprintf(stdout,"    REQUIRED only if an Input image directory not specified\n");\r
 103         fprintf(stdout,"    Currently accepts J2K-files, JP2-files and JPT-files. The file type\n");\r
 104         fprintf(stdout,"    is identified based on its suffix.\n");\r
 105         fprintf(stdout,"  -o <decompressed file>\n");\r
 106         fprintf(stdout,"    REQUIRED\n");\r
 107         fprintf(stdout,"    Currently accepts PGM-files, PPM-files, PNM-files, PGX-files and\n");\r
 108         fprintf(stdout,"    BMP-files. Binary data is written to the file (not ascii). If a PGX\n");\r
 109         fprintf(stdout,"    filename is given, there will be as many output files as there are\n");\r
 110         fprintf(stdout,"    components: an indice starting from 0 will then be appended to the\n");\r
 111         fprintf(stdout,"    output filename, just before the \"pgx\" extension. If a PGM filename\n");\r
 112         fprintf(stdout,"    is given and there are more than one component, only the first component\n");\r
 113         fprintf(stdout,"    will be written to the file.\n");\r
 114         fprintf(stdout,"  -r <reduce factor>\n");\r
 115         fprintf(stdout,"    Set the number of highest resolution levels to be discarded. The\n");\r
 116         fprintf(stdout,"    image resolution is effectively divided by 2 to the power of the\n");\r
 117         fprintf(stdout,"    number of discarded levels. The reduce factor is limited by the\n");\r
 118         fprintf(stdout,"    smallest total number of decomposition levels among tiles.\n");\r
 119         fprintf(stdout,"  -l <number of quality layers to decode>\n");\r
 120         fprintf(stdout,"    Set the maximum number of quality layers to decode. If there are\n");\r
 121         fprintf(stdout,"    less quality layers than the specified number, all the quality layers\n");\r
 122         fprintf(stdout,"    are decoded.\n");\r
 123 /* UniPG>> */\r
 124 #ifdef USE_JPWL\r
 125         fprintf(stdout,"  -W <options>\n");\r
 126         fprintf(stdout,"    Activates the JPWL correction capability, if the codestream complies.\n");\r
 127         fprintf(stdout,"    Options can be a comma separated list of <param=val> tokens:\n");\r
 128         fprintf(stdout,"    c, c=numcomps\n");\r
 129         fprintf(stdout,"       numcomps is the number of expected components in the codestream\n");\r
 130         fprintf(stdout,"       (search of first EPB rely upon this, default is %d)\n", JPWL_EXPECTED_COMPONENTS);\r
 131 #endif /* USE_JPWL */\r
 132 /* <<UniPG */\r
 133         fprintf(stdout,"\n");\r
 134 }\r
 135 \r
 136 /* -------------------------------------------------------------------------- */\r
 137 \r
 138 int get_num_images(char *imgdirpath){\r
 139         DIR *dir;\r
 140         struct dirent* content; \r
 141         int num_images = 0;\r
 142 \r
 143         /*Reading the input images from given input directory*/\r
 144 \r
 145         dir= opendir(imgdirpath);\r
 146         if(!dir){\r
 147                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);\r
 148                 return 0;\r
 149         }\r
 150         \r
 151         while((content=readdir(dir))!=NULL){\r
 152                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )\r
 153                         continue;\r
 154                 num_images++;\r
 155         }\r
 156         return num_images;\r
 157 }\r
 158 \r
 159 int load_images(dircnt_t *dirptr, char *imgdirpath){\r
 160         DIR *dir;\r
 161         struct dirent* content; \r
 162         int i = 0;\r
 163 \r
 164         /*Reading the input images from given input directory*/\r
 165 \r
 166         dir= opendir(imgdirpath);\r
 167         if(!dir){\r
 168                 fprintf(stderr,"Could not open Folder %s\n",imgdirpath);\r
 169                 return 1;\r
 170         }else   {\r
 171                 fprintf(stderr,"Folder opened successfully\n");\r
 172         }\r
 173         \r
 174         while((content=readdir(dir))!=NULL){\r
 175                 if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )\r
 176                         continue;\r
 177 \r
 178                 strcpy(dirptr->filename[i],content->d_name);\r
 179                 i++;\r
 180         }\r
 181         return 0;       \r
 182 }\r
 183 \r
 184 int get_file_format(char *filename) {\r
 185         unsigned int i;\r
 186         static const char *extension[] = {"pgx", "pnm", "pgm", "ppm", "bmp","tif", "raw", "tga", "j2k", "jp2", "jpt", "j2c" };\r
 187         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
 188         char * ext = strrchr(filename, '.');\r
 189         if (ext == NULL)\r
 190                 return -1;\r
 191         ext++;\r
 192         if(ext) {\r
 193                 for(i = 0; i < sizeof(format)/sizeof(*format); i++) {\r
 194                         if(strnicmp(ext, extension[i], 3) == 0) {\r
 195                                 return format[i];\r
 196                         }\r
 197                 }\r
 198         }\r
 199 \r
 200         return -1;\r
 201 }\r
 202 \r
 203 \r
 204 /* -------------------------------------------------------------------------- */\r
 205 \r
 206 int parse_cmdline_decoder(int argc, char **argv, opj_dparameters_t *parameters,img_fol_t *img_fol) {\r
 207         /* parse the command line */\r
 208         int totlen;\r
 209         opj_option_t long_option[]={\r
 210                 {"ImgDir",REQ_ARG, NULL ,'y'},\r
 211                 {"OutFor",REQ_ARG, NULL ,'O'},\r
 212         };\r
 213 \r
 214 /* UniPG>> */\r
 215         const char optlist[] = "i:o:r:l:hx:"\r
 216 \r
 217 #ifdef USE_JPWL\r
 218                                         "W:"\r
 219 #endif /* USE_JPWL */\r
 220                                         ;\r
 221         /*for (i=0; i<argc; i++) {\r
 222                 printf("[%s]",argv[i]);\r
 223         }\r
 224         printf("\n");*/\r
 225 \r
 226 /* <<UniPG */\r
 227         totlen=sizeof(long_option);\r
 228         img_fol->set_out_format = 0;\r
 229         reset_options_reading();\r
 230 \r
 231         while (1) {\r
 232                 int c = opj_getopt_long(argc, argv,optlist,long_option,totlen);\r
 233                 if (c == -1)\r
 234                         break;\r
 235                 switch (c) {\r
 236                         case 'i':                       /* input file */\r
 237                         {\r
 238                                 char *infile = opj_optarg;\r
 239                                 parameters->decod_format = get_file_format(infile);\r
 240                                 switch(parameters->decod_format) {\r
 241                                         case J2K_CFMT:\r
 242                                         case JP2_CFMT:\r
 243                                         case JPT_CFMT:\r
 244                                                 break;\r
 245                                         default:\r
 246                                                 fprintf(stderr, \r
 247                                                         "!! Unrecognized format for infile : %s [accept only *.j2k, *.jp2, *.jpc or *.jpt] !!\n\n", \r
 248                                                         infile);\r
 249                                                 return 1;\r
 250                                 }\r
 251                                 strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);\r
 252                         }\r
 253                         break;\r
 254                                 \r
 255                                 /* ----------------------------------------------------- */\r
 256 \r
 257                         case 'o':                       /* output file */\r
 258                         {\r
 259                                 char *outfile = opj_optarg;\r
 260                                 parameters->cod_format = get_file_format(outfile);\r
 261                                 switch(parameters->cod_format) {\r
 262                                         case PGX_DFMT:\r
 263                                         case PXM_DFMT:\r
 264                                         case BMP_DFMT:\r
 265                                         case TIF_DFMT:\r
 266                                         case RAW_DFMT:\r
 267                                         case TGA_DFMT:\r
 268                                                 break;\r
 269                                         default:\r
 270                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx, *.bmp, *.tif, *.raw or *.tga]!! \n", outfile);\r
 271                                                 return 1;\r
 272                                 }\r
 273                                 strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);\r
 274                         }\r
 275                         break;\r
 276                         \r
 277                                 /* ----------------------------------------------------- */\r
 278 \r
 279                         case 'O':                       /* output format */\r
 280                         {\r
 281                                 char outformat[50];\r
 282                                 char *of = opj_optarg;\r
 283                                 sprintf(outformat,".%s",of);\r
 284                                 img_fol->set_out_format = 1;\r
 285                                 parameters->cod_format = get_file_format(outformat);\r
 286                                 switch(parameters->cod_format) {\r
 287                                         case PGX_DFMT:\r
 288                                                 img_fol->out_format = "pgx";\r
 289                                                 break;\r
 290                                         case PXM_DFMT:\r
 291                                                 img_fol->out_format = "ppm";\r
 292                                                 break;\r
 293                                         case BMP_DFMT:\r
 294                                                 img_fol->out_format = "bmp";\r
 295                                                 break;\r
 296                                         case TIF_DFMT:\r
 297                                                 img_fol->out_format = "tif";\r
 298                                                 break;\r
 299                                         case RAW_DFMT:\r
 300                                                 img_fol->out_format = "raw";\r
 301                                                 break;\r
 302                                         case TGA_DFMT:\r
 303                                                 img_fol->out_format = "raw";\r
 304                                                 break;\r
 305                                         default:\r
 306                                                 fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx, *.bmp, *.tif, *.raw or *.tga]!! \n", outformat);\r
 307                                                 return 1;\r
 308                                                 break;\r
 309                                 }\r
 310                         }\r
 311                         break;\r
 312 \r
 313                                 /* ----------------------------------------------------- */\r
 314 \r
 315 \r
 316                         case 'r':               /* reduce option */\r
 317                         {\r
 318                                 sscanf(opj_optarg, "%d", &parameters->cp_reduce);\r
 319                         }\r
 320                         break;\r
 321                         \r
 322                                 /* ----------------------------------------------------- */\r
 323       \r
 324 \r
 325                         case 'l':               /* layering option */\r
 326                         {\r
 327                                 sscanf(opj_optarg, "%d", &parameters->cp_layer);\r
 328                         }\r
 329                         break;\r
 330                         \r
 331                                 /* ----------------------------------------------------- */\r
 332 \r
 333                         case 'h':                       /* display an help description */\r
 334                                 decode_help_display();\r
 335                                 return 1;                               \r
 336 \r
 337                                 /* ------------------------------------------------------ */\r
 338 \r
 339                         case 'y':                       /* Image Directory path */\r
 340                                 {\r
 341                                         img_fol->imgdirpath = (char*)malloc(strlen(opj_optarg) + 1);\r
 342                                         strcpy(img_fol->imgdirpath,opj_optarg);\r
 343                                         img_fol->set_imgdir=1;\r
 344                                 }\r
 345                                 break;\r
 346                                 /* ----------------------------------------------------- */\r
 347 /* UniPG>> */\r
 348 #ifdef USE_JPWL\r
 349                         \r
 350                         case 'W':                       /* activate JPWL correction */\r
 351                         {\r
 352                                 char *token = NULL;\r
 353 \r
 354                                 token = strtok(opj_optarg, ",");\r
 355                                 while(token != NULL) {\r
 356 \r
 357                                         /* search expected number of components */\r
 358                                         if (*token == 'c') {\r
 359 \r
 360                                                 static int compno;\r
 361 \r
 362                                                 compno = JPWL_EXPECTED_COMPONENTS; /* predefined no. of components */\r
 363 \r
 364                                                 if(sscanf(token, "c=%d", &compno) == 1) {\r
 365                                                         /* Specified */\r
 366                                                         if ((compno < 1) || (compno > 256)) {\r
 367                                                                 fprintf(stderr, "ERROR -> invalid number of components c = %d\n", compno);\r
 368                                                                 return 1;\r
 369                                                         }\r
 370                                                         parameters->jpwl_exp_comps = compno;\r
 371 \r
 372                                                 } else if (!strcmp(token, "c")) {\r
 373                                                         /* default */\r
 374                                                         parameters->jpwl_exp_comps = compno; /* auto for default size */\r
 375 \r
 376                                                 } else {\r
 377                                                         fprintf(stderr, "ERROR -> invalid components specified = %s\n", token);\r
 378                                                         return 1;\r
 379                                                 };\r
 380                                         }\r
 381 \r
 382                                         /* search maximum number of tiles */\r
 383                                         if (*token == 't') {\r
 384 \r
 385                                                 static int tileno;\r
 386 \r
 387                                                 tileno = JPWL_MAXIMUM_TILES; /* maximum no. of tiles */\r
 388 \r
 389                                                 if(sscanf(token, "t=%d", &tileno) == 1) {\r
 390                                                         /* Specified */\r
 391                                                         if ((tileno < 1) || (tileno > JPWL_MAXIMUM_TILES)) {\r
 392                                                                 fprintf(stderr, "ERROR -> invalid number of tiles t = %d\n", tileno);\r
 393                                                                 return 1;\r
 394                                                         }\r
 395                                                         parameters->jpwl_max_tiles = tileno;\r
 396 \r
 397                                                 } else if (!strcmp(token, "t")) {\r
 398                                                         /* default */\r
 399                                                         parameters->jpwl_max_tiles = tileno; /* auto for default size */\r
 400 \r
 401                                                 } else {\r
 402                                                         fprintf(stderr, "ERROR -> invalid tiles specified = %s\n", token);\r
 403                                                         return 1;\r
 404                                                 };\r
 405                                         }\r
 406 \r
 407                                         /* next token or bust */\r
 408                                         token = strtok(NULL, ",");\r
 409                                 };\r
 410                                 parameters->jpwl_correct = true;\r
 411                                 fprintf(stdout, "JPWL correction capability activated\n");\r
 412                                 fprintf(stdout, "- expecting %d components\n", parameters->jpwl_exp_comps);\r
 413                         }\r
 414                         break;  \r
 415 #endif /* USE_JPWL */\r
 416 /* <<UniPG */            \r
 417 \r
 418                                 /* ----------------------------------------------------- */\r
 419                         \r
 420                         default:\r
 421                                 fprintf(stderr,"WARNING -> this option is not valid \"-%c %s\"\n",c, opj_optarg);\r
 422                                 break;\r
 423                 }\r
 424         }\r
 425 \r
 426         /* No check for possible errors before the -i and -o options are of course not mandatory*/\r
 427 \r
 428         return 0;\r
 429 }\r
 430 \r
 431 /* -------------------------------------------------------------------------- */\r
 432 \r
 433 /**\r
 434 error callback returning the message to Java andexpecting a callback_variables_t client object\r
 435 */\r
 436 void error_callback(const char *msg, void *client_data) {\r
 437         callback_variables_t* vars = (callback_variables_t*) client_data;\r
 438         JNIEnv *env = vars->env;\r
 439         jstring jbuffer;\r
 440 \r
 441         jbuffer = (*env)->NewStringUTF(env, msg);\r
 442         (*env)->ExceptionClear(env);\r
 443         (*env)->CallVoidMethod(env, *(vars->jobj), vars->error_mid, jbuffer);\r
 444 \r
 445         if ((*env)->ExceptionOccurred(env)) {\r
 446                 fprintf(stderr,"C: Exception during call back method\n");\r
 447                 (*env)->ExceptionDescribe(env);\r
 448                 (*env)->ExceptionClear(env);\r
 449         }\r
 450         (*env)->DeleteLocalRef(env, jbuffer);\r
 451 }\r
 452 /**\r
 453 warning callback returning the message to Java andexpecting a callback_variables_t client object\r
 454 */\r
 455 void warning_callback(const char *msg, void *client_data) {\r
 456         callback_variables_t* vars = (callback_variables_t*) client_data;\r
 457         JNIEnv *env = vars->env;\r
 458         jstring jbuffer;\r
 459 \r
 460         jbuffer = (*env)->NewStringUTF(env, msg);\r
 461         (*env)->ExceptionClear(env);\r
 462         (*env)->CallVoidMethod(env, *(vars->jobj), vars->message_mid, jbuffer);\r
 463         \r
 464         if ((*env)->ExceptionOccurred(env)) {\r
 465                 fprintf(stderr,"C: Exception during call back method\n");\r
 466                 (*env)->ExceptionDescribe(env);\r
 467                 (*env)->ExceptionClear(env);\r
 468         }\r
 469         (*env)->DeleteLocalRef(env, jbuffer);\r
 470 }\r
 471 /**\r
 472 information callback returning the message to Java andexpecting a callback_variables_t client object\r
 473 */\r
 474 void info_callback(const char *msg, void *client_data) {\r
 475         callback_variables_t* vars = (callback_variables_t*) client_data;\r
 476         JNIEnv *env = vars->env;\r
 477         jstring jbuffer;\r
 478 \r
 479         jbuffer = (*env)->NewStringUTF(env, msg);\r
 480         (*env)->ExceptionClear(env);\r
 481         (*env)->CallVoidMethod(env, *(vars->jobj), vars->message_mid, jbuffer);\r
 482 \r
 483         if ((*env)->ExceptionOccurred(env)) {\r
 484                 fprintf(stderr,"C: Exception during call back method\n");\r
 485                 (*env)->ExceptionDescribe(env);\r
 486                 (*env)->ExceptionClear(env);\r
 487         }\r
 488         (*env)->DeleteLocalRef(env, jbuffer);\r
 489 }\r
 490 \r
 491 \r
 492 /* --------------------------------------------------------------------------\r
 493    --------------------   MAIN METHOD, CALLED BY JAVA -----------------------*/\r
 494 JNIEXPORT jint JNICALL Java_org_openJpeg_OpenJPEGJavaDecoder_internalDecodeJ2KtoImage(JNIEnv *env, jobject obj, jobjectArray javaParameters) {\r
 495         int argc;               /* To simulate the command line parameters (taken from the javaParameters variable) and be able to re-use the */\r
 496         char **argv;    /*  'parse_cmdline_decoder' method taken from the j2k_to_image project */\r
 497         opj_dparameters_t parameters;   /* decompression parameters */\r
 498         img_fol_t img_fol;\r
 499         opj_event_mgr_t event_mgr;              /* event manager */\r
 500         opj_image_t *image = NULL;\r
 501         FILE *fsrc = NULL;\r
 502         unsigned char *src = NULL;\r
 503         int file_length;\r
 504         int num_images;\r
 505         int i,j,imageno;\r
 506         opj_dinfo_t* dinfo = NULL;      /* handle to a decompressor */\r
 507         opj_cio_t *cio = NULL;\r
 508         int w,h;\r
 509         long min_value, max_value;\r
 510         short tempS; unsigned char tempUC, tempUC1, tempUC2;\r
 511         /* ==> Access variables to the Java member variables*/\r
 512         jsize           arraySize;\r
 513         jclass          cls;\r
 514         jobject         object;\r
 515         jboolean        isCopy;\r
 516         jfieldID        fid;\r
 517         jbyteArray      jba;\r
 518         jshortArray jsa;\r
 519         jintArray       jia;\r
 520         jbyte           *jbBody, *ptrBBody;\r
 521         jshort          *jsBody, *ptrSBody;\r
 522         jint            *jiBody, *ptrIBody;\r
 523         callback_variables_t msgErrorCallback_vars;\r
 524         /* <=== access variable to Java member variables */\r
 525         int *ptr, *ptr1, *ptr2;                         /* <== To transfer the decoded image to Java*/\r
 526 \r
 527         /* configure the event callbacks */\r
 528         memset(&event_mgr, 0, sizeof(opj_event_mgr_t)); \r
 529         event_mgr.error_handler = error_callback;\r
 530         event_mgr.warning_handler = warning_callback;\r
 531         event_mgr.info_handler = info_callback;\r
 532 \r
 533         /* JNI reference to the calling class*/\r
 534         cls = (*env)->GetObjectClass(env, obj);\r
 535 \r
 536         /* Pointers to be able to call a Java method for all the info and error messages*/\r
 537         msgErrorCallback_vars.env = env;\r
 538         msgErrorCallback_vars.jobj = &obj;\r
 539         msgErrorCallback_vars.message_mid = (*env)->GetMethodID(env, cls, "logMessage", "(Ljava/lang/String;)V");\r
 540         msgErrorCallback_vars.error_mid = (*env)->GetMethodID(env, cls, "logError", "(Ljava/lang/String;)V");\r
 541 \r
 542         /* Get the String[] containing the parameters, and converts it into a char** to simulate command line arguments.*/\r
 543         arraySize = (*env)->GetArrayLength(env, javaParameters);\r
 544         argc = (int) arraySize +1;\r
 545         argv = malloc(argc*sizeof(char*));\r
 546         argv[0] = "ProgramName.exe";    /* The program name: useless*/\r
 547         j=0;\r
 548         for (i=1; i<argc; i++) {\r
 549                 object = (*env)->GetObjectArrayElement(env, javaParameters, i-1);\r
 550                 argv[i] = (char*)(*env)->GetStringUTFChars(env, object, &isCopy);\r
 551         }\r
 552 \r
 553         /*printf("C: decoder params = ");\r
 554         for (i=0; i<argc; i++) {\r
 555                 printf("[%s]",argv[i]);\r
 556         }\r
 557         printf("\n");*/\r
 558 \r
 559         /* set decoding parameters to default values */\r
 560         opj_set_default_decoder_parameters(&parameters);\r
 561         parameters.decod_format = J2K_CFMT;\r
 562 \r
 563         /* parse input and get user encoding parameters */\r
 564         if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol) == 1) {\r
 565                 /* Release the Java arguments array*/\r
 566                 for (i=1; i<argc; i++)\r
 567                         (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, javaParameters, i-1), argv[i]);\r
 568                 return -1;\r
 569         }\r
 570         /* Release the Java arguments array*/\r
 571         for (i=1; i<argc; i++)\r
 572                 (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, javaParameters, i-1), argv[i]);\r
 573 \r
 574         num_images=1;\r
 575 \r
 576         /* Get additional information from the Java object variables*/\r
 577         fid = (*env)->GetFieldID(env, cls,"skippedResolutions", "I");\r
 578         parameters.cp_reduce = (short) (*env)->GetIntField(env, obj, fid);\r
 579 \r
 580         /*Decoding image one by one*/\r
 581         for(imageno = 0; imageno < num_images ; imageno++)\r
 582         {\r
 583                 image = NULL;\r
 584                 fprintf(stderr,"\n");\r
 585 \r
 586                 /* read the input file and put it in memory into the 'src' object, if the -i option is given in JavaParameters.\r
 587                    Implemented for debug purpose. */\r
 588                 /* -------------------------------------------------------------- */\r
 589                 if (parameters.infile && parameters.infile[0]!='\0') {\r
 590                         /*printf("C: opening [%s]\n", parameters.infile);*/\r
 591                         fsrc = fopen(parameters.infile, "rb");\r
 592                         if (!fsrc) {\r
 593                                 fprintf(stderr, "ERROR -> failed to open %s for reading\n", parameters.infile);\r
 594                                 return 1;\r
 595                         }\r
 596                         fseek(fsrc, 0, SEEK_END);\r
 597                         file_length = ftell(fsrc);\r
 598                         fseek(fsrc, 0, SEEK_SET);\r
 599                         src = (unsigned char *) malloc(file_length);\r
 600                         fread(src, 1, file_length, fsrc);\r
 601                         fclose(fsrc);\r
 602                         /*printf("C: %d bytes read from file\n",file_length);*/\r
 603                 } else {\r
 604                         /* Preparing the transfer of the codestream from Java to C*/\r
 605                         /*printf("C: before transfering codestream\n");*/\r
 606                         fid = (*env)->GetFieldID(env, cls,"compressedStream", "[B");\r
 607                         jba = (*env)->GetObjectField(env, obj, fid);\r
 608                         file_length = (*env)->GetArrayLength(env, jba);\r
 609                         jbBody = (*env)->GetByteArrayElements(env, jba, &isCopy);\r
 610                         src = (unsigned char*)jbBody;\r
 611                 }\r
 612 \r
 613                 /* decode the code-stream */\r
 614                 /* ---------------------- */\r
 615 \r
 616                 switch(parameters.decod_format) {\r
 617                 case J2K_CFMT:\r
 618                 {\r
 619                         /* JPEG-2000 codestream */\r
 620 \r
 621                         /* get a decoder handle */\r
 622                         dinfo = opj_create_decompress(CODEC_J2K);\r
 623 \r
 624                         /* catch events using our callbacks and give a local context */\r
 625                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, &msgErrorCallback_vars);\r
 626 \r
 627                         /* setup the decoder decoding parameters using user parameters */\r
 628                         opj_setup_decoder(dinfo, &parameters);\r
 629 \r
 630                         /* open a byte stream */\r
 631                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);\r
 632 \r
 633                         /* decode the stream and fill the image structure */\r
 634                         image = opj_decode(dinfo, cio);\r
 635                         if(!image) {\r
 636                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");\r
 637                                 opj_destroy_decompress(dinfo);\r
 638                                 opj_cio_close(cio);\r
 639                                 return 1;\r
 640                         }\r
 641 \r
 642                         /* close the byte stream */\r
 643                         opj_cio_close(cio);\r
 644                 }\r
 645                 break;\r
 646 \r
 647                 case JP2_CFMT:\r
 648                 {\r
 649                         /* JPEG 2000 compressed image data */\r
 650 \r
 651                         /* get a decoder handle */\r
 652                         dinfo = opj_create_decompress(CODEC_JP2);\r
 653 \r
 654                         /* catch events using our callbacks and give a local context */\r
 655                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, &msgErrorCallback_vars);\r
 656 \r
 657                         /* setup the decoder decoding parameters using the current image and user parameters */\r
 658                         opj_setup_decoder(dinfo, &parameters);\r
 659 \r
 660                         /* open a byte stream */\r
 661                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);\r
 662 \r
 663                         /* decode the stream and fill the image structure */\r
 664                         image = opj_decode(dinfo, cio);\r
 665                         if(!image) {\r
 666                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");\r
 667                                 opj_destroy_decompress(dinfo);\r
 668                                 opj_cio_close(cio);\r
 669                                 return 1;\r
 670                         }\r
 671 \r
 672                         /* close the byte stream */\r
 673                         opj_cio_close(cio);\r
 674 \r
 675                 }\r
 676                 break;\r
 677 \r
 678                 case JPT_CFMT:\r
 679                 {\r
 680                         /* JPEG 2000, JPIP */\r
 681 \r
 682                         /* get a decoder handle */\r
 683                         dinfo = opj_create_decompress(CODEC_JPT);\r
 684 \r
 685                         /* catch events using our callbacks and give a local context */\r
 686                         opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, &msgErrorCallback_vars);\r
 687 \r
 688                         /* setup the decoder decoding parameters using user parameters */\r
 689                         opj_setup_decoder(dinfo, &parameters);\r
 690 \r
 691                         /* open a byte stream */\r
 692                         cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);\r
 693 \r
 694                         /* decode the stream and fill the image structure */\r
 695                         image = opj_decode(dinfo, cio);\r
 696                         if(!image) {\r
 697                                 fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");\r
 698                                 opj_destroy_decompress(dinfo);\r
 699                                 opj_cio_close(cio);\r
 700                                 return 1;\r
 701                         }\r
 702 \r
 703                         /* close the byte stream */\r
 704                         opj_cio_close(cio);\r
 705                 }\r
 706                 break;\r
 707 \r
 708                 default:\r
 709                         fprintf(stderr, "skipping file..\n");\r
 710                         continue;\r
 711         }\r
 712 \r
 713                 /* free the memory containing the code-stream */\r
 714                 if (parameters.infile && parameters.infile[0]!='\0') {\r
 715                         free(src);\r
 716                 } else {\r
 717                         (*env)->ReleaseByteArrayElements(env, jba, jbBody, 0);\r
 718                 }\r
 719                 src = NULL;\r
 720 \r
 721                 /* create output image.\r
 722                         If the -o parameter is given in the JavaParameters, write the decoded version into a file.\r
 723                         Implemented for debug purpose. */\r
 724                 /* ---------------------------------- */\r
 725                 switch (parameters.cod_format) {\r
 726                 case PXM_DFMT:                  /* PNM PGM PPM */\r
 727                         if (imagetopnm(image, parameters.outfile)) {\r
 728                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);\r
 729                         }\r
 730                         else {\r
 731                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);\r
 732                         }\r
 733                         break;\r
 734 \r
 735                 case PGX_DFMT:                  /* PGX */\r
 736                         if(imagetopgx(image, parameters.outfile)){\r
 737                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);\r
 738                         }\r
 739                         else {\r
 740                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);\r
 741                         }\r
 742                         break;\r
 743 \r
 744                 case BMP_DFMT:                  /* BMP */\r
 745                         if(imagetobmp(image, parameters.outfile)){\r
 746                                 fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);\r
 747                         }\r
 748                         else {\r
 749                                 fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);\r
 750                         }\r
 751                         break;\r
 752 \r
 753                 }\r
 754 \r
 755                 /* ========= Return the image to the Java structure ===============*/\r
 756 #ifdef CHECK_THRESHOLDS\r
 757                 printf("C: checking thresholds\n");\r
 758 #endif\r
 759                 /* First compute the real with and height, in function of the resolutions decoded.*/\r
 760                 /*wr = (image->comps[0].w + (1 << image->comps[0].factor) -1) >> image->comps[0].factor;*/\r
 761                 /*hr = (image->comps[0].h + (1 << image->comps[0].factor) -1) >> image->comps[0].factor;*/\r
 762                 w = image->comps[0].w;\r
 763                 h = image->comps[0].h;\r
 764 \r
 765                 if (image->numcomps==3) {       /* 3 components color image*/\r
 766                         ptr = image->comps[0].data;\r
 767                         ptr1 = image->comps[1].data;\r
 768                         ptr2 = image->comps[2].data;\r
 769 #ifdef CHECK_THRESHOLDS \r
 770                         if (image->comps[0].sgnd) {\r
 771                                 min_value = -128;\r
 772                                 max_value = 127;\r
 773                         } else {\r
 774                                 min_value = 0;\r
 775                                 max_value = 255;\r
 776                         }\r
 777 #endif                  \r
 778                         /* Get the pointer to the Java structure where the data must be copied*/\r
 779                         fid = (*env)->GetFieldID(env, cls,"image24", "[I");\r
 780                         jia = (*env)->GetObjectField(env, obj, fid);\r
 781                         jiBody = (*env)->GetIntArrayElements(env, jia, 0);\r
 782                         ptrIBody = jiBody;\r
 783                         printf("C: transfering image24: %d int to Java pointer=%d\n",image->numcomps*w*h, ptrIBody);\r
 784 \r
 785                         for (i=0; i<w*h; i++) {\r
 786                                 tempUC = (unsigned char)(ptr[i]);\r
 787                                 tempUC1 = (unsigned char)(ptr1[i]);\r
 788                                 tempUC2 = (unsigned char)(ptr2[i]);\r
 789 #ifdef CHECK_THRESHOLDS\r
 790                                 if (tempUC < min_value)\r
 791                                         tempUC=min_value;\r
 792                                 else if (tempUC > max_value)\r
 793                                         tempUC=max_value;\r
 794                                 if (tempUC1 < min_value)\r
 795                                         tempUC1=min_value;\r
 796                                 else if (tempUC1 > max_value)\r
 797                                         tempUC1=max_value;\r
 798                                 if (tempUC2 < min_value)\r
 799                                         tempUC2=min_value;\r
 800                                 else if (tempUC2 > max_value)\r
 801                                         tempUC2=max_value;\r
 802 #endif\r
 803                                 *(ptrIBody++)  = (int) ( (tempUC2<<16) + (tempUC1<<8) + tempUC );\r
 804                         }\r
 805                         (*env)->ReleaseIntArrayElements(env, jia, jiBody, 0);\r
 806 \r
 807                 } else {        /* 1 component 8 or 16 bpp image*/\r
 808                         ptr = image->comps[0].data;\r
 809                         printf("C: before transfering a %d bpp image to java (length = %d)\n",image->comps[0].prec ,w*h);\r
 810                         if (image->comps[0].prec<=8) {\r
 811                                 fid = (*env)->GetFieldID(env, cls,"image8", "[B");\r
 812                                 jba = (*env)->GetObjectField(env, obj, fid);\r
 813                                 jbBody = (*env)->GetByteArrayElements(env, jba, 0);\r
 814                                 ptrBBody = jbBody;\r
 815 #ifdef CHECK_THRESHOLDS \r
 816                                 if (image->comps[0].sgnd) {\r
 817                                         min_value = -128;\r
 818                                         max_value = 127;\r
 819                                 } else {\r
 820                                         min_value = 0;\r
 821                                         max_value = 255;\r
 822                                 }\r
 823 #endif                                                          \r
 824                                 /*printf("C: transfering %d shorts to Java image8 pointer = %d\n", wr*hr,ptrSBody);*/\r
 825                                 for (i=0; i<w*h; i++) {\r
 826                                         tempUC = (unsigned char) (ptr[i]);\r
 827 #ifdef CHECK_THRESHOLDS\r
 828                                         if (tempUC<min_value)\r
 829                                                 tempUC = min_value;\r
 830                                         else if (tempUC > max_value)\r
 831                                                 tempUC = max_value;\r
 832 #endif\r
 833                                         *(ptrBBody++) = tempUC;\r
 834                                 }\r
 835                                 (*env)->ReleaseByteArrayElements(env, jba, jbBody, 0);\r
 836                                 printf("C: image8 transfered to Java\n");\r
 837                         } else {\r
 838                                 fid = (*env)->GetFieldID(env, cls,"image16", "[S");\r
 839                                 jsa = (*env)->GetObjectField(env, obj, fid);\r
 840                                 jsBody = (*env)->GetShortArrayElements(env, jsa, 0);\r
 841                                 ptrSBody = jsBody;\r
 842 #ifdef CHECK_THRESHOLDS \r
 843                                 if (image->comps[0].sgnd) {\r
 844                                         min_value = -32768;\r
 845                                         max_value = 32767;\r
 846                                 } else {\r
 847                                         min_value = 0;\r
 848                                         max_value = 65535;\r
 849                                 }\r
 850                                 printf("C: minValue = %d, maxValue = %d\n", min_value, max_value);\r
 851 #endif                          \r
 852                                 printf("C: transfering %d shorts to Java image16 pointer = %d\n", w*h,ptrSBody);\r
 853                                 for (i=0; i<w*h; i++) {\r
 854                                         tempS = (short) (ptr[i]);\r
 855 #ifdef CHECK_THRESHOLDS\r
 856                                         if (tempS<min_value) {\r
 857                                                 printf("C: value %d truncated to %d\n", tempS, min_value);\r
 858                                                 tempS = min_value;\r
 859                                         } else if (tempS > max_value) {\r
 860                                                 printf("C: value %d truncated to %d\n", tempS, max_value);\r
 861                                                 tempS = max_value;\r
 862                                         }\r
 863 #endif\r
 864                                         *(ptrSBody++) = tempS;\r
 865                                 }\r
 866                                 (*env)->ReleaseShortArrayElements(env, jsa, jsBody, 0);\r
 867                                 printf("C: image16 completely filled\n");\r
 868                         }\r
 869                 }       \r
 870 \r
 871 \r
 872                 /* free remaining structures */\r
 873                 if(dinfo) {\r
 874                         opj_destroy_decompress(dinfo);\r
 875                 }\r
 876                 /* free image data structure */\r
 877                 opj_image_destroy(image);\r
 878 \r
 879         }\r
 880         return 1; /* OK */\r
 881 }\r
 882 /*end main*/\r
 883 \r