/*
 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2007, Professor Benoit Macq
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * Copyright (c) 2006-2007, Parvatha Elangovan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>

#ifdef _WIN32
#include "windirent.h"
#else
#include <dirent.h>
#endif /* _WIN32 */

#ifdef _WIN32
#include <windows.h>
#else
#include <strings.h>
#define _stricmp strcasecmp
#define _strnicmp strncasecmp
#endif /* _WIN32 */

#include "opj_config.h"
#include "openjpeg.h"
#include "opj_getopt.h"
#include "convert.h"
#include "index.h"

#ifdef HAVE_LIBLCMS2
#include <lcms2.h>
#endif
#ifdef HAVE_LIBLCMS1
#include <lcms.h>
#endif
#include "color.h"

#include "format_defs.h"

typedef struct dircnt{
	/** Buffer for holding images read from Directory*/
	char *filename_buf;
	/** Pointer to the buffer*/
	char **filename;
}dircnt_t;


typedef struct img_folder{
	/** The directory path of the folder containing input images*/
	char *imgdirpath;
	/** Output format*/
	const char *out_format;
	/** Enable option*/
	char set_imgdir;
	/** Enable Cod Format for output*/
	char set_out_format;

}img_fol_t;

typedef enum opj_prec_mode
{
	OPJ_PREC_MODE_CLIP,
	OPJ_PREC_MODE_SCALE
} opj_precision_mode;

typedef struct opj_prec
{
	int                prec;
	opj_precision_mode mode;
}opj_precision;

typedef struct opj_decompress_params
{
	/** core library parameters */
	opj_dparameters_t core;
	
	/** input file name */
	char infile[OPJ_PATH_LEN];
	/** output file name */
	char outfile[OPJ_PATH_LEN];
	/** input file format 0: J2K, 1: JP2, 2: JPT */
	int decod_format;
	/** output file format 0: PGX, 1: PxM, 2: BMP */
	int cod_format;
	
	opj_precision* precision;
	int            nb_precision;
	/* force output colorspace to RGB */
	int force_rgb;
	/* upsample components according to their dx/dy values */
	int upsample;
}opj_decompress_parameters;

static void decode_help_display(void) {
	fprintf(stdout,"HELP for j2k_to_image\n----\n\n");
	fprintf(stdout,"- the -h option displays this help information on screen\n\n");

/* UniPG>> */
	fprintf(stdout,"List of parameters for the JPEG 2000 "
#ifdef USE_JPWL
		"+ JPWL "
#endif /* USE_JPWL */
		"decoder:\n");
/* <<UniPG */
	fprintf(stdout,"\n");
	fprintf(stdout,"\n");
	fprintf(stdout,"  -ImgDir \n");
	fprintf(stdout,"	Image file Directory path \n");
	fprintf(stdout,"  -OutFor \n");
	fprintf(stdout,"    REQUIRED only if -ImgDir is used\n");
	fprintf(stdout,"	  Need to specify only format without filename <BMP>  \n");
	fprintf(stdout,"    Currently accepts PGM, PPM, PNM, PGX, PNG, BMP, TIF, RAW and TGA formats\n");
	fprintf(stdout,"  -i <compressed file>\n");
	fprintf(stdout,"    REQUIRED only if an Input image directory not specified\n");
	fprintf(stdout,"    Currently accepts J2K-files, JP2-files and JPT-files. The file type\n");
	fprintf(stdout,"    is identified based on its suffix.\n");
	fprintf(stdout,"  -o <decompressed file>\n");
	fprintf(stdout,"    REQUIRED\n");
	fprintf(stdout,"    Currently accepts PGM, PPM, PNM, PGX, PNG, BMP, TIF, RAW and TGA files\n");
	fprintf(stdout,"    Binary data is written to the file (not ascii). If a PGX\n");
	fprintf(stdout,"    filename is given, there will be as many output files as there are\n");
	fprintf(stdout,"    components: an indice starting from 0 will then be appended to the\n");
	fprintf(stdout,"    output filename, just before the \"pgx\" extension. If a PGM filename\n");
	fprintf(stdout,"    is given and there are more than one component, only the first component\n");
	fprintf(stdout,"    will be written to the file.\n");
	fprintf(stdout,"  -r <reduce factor>\n");
	fprintf(stdout,"    Set the number of highest resolution levels to be discarded. The\n");
	fprintf(stdout,"    image resolution is effectively divided by 2 to the power of the\n");
	fprintf(stdout,"    number of discarded levels. The reduce factor is limited by the\n");
	fprintf(stdout,"    smallest total number of decomposition levels among tiles.\n");
	fprintf(stdout,"  -l <number of quality layers to decode>\n");
	fprintf(stdout,"    Set the maximum number of quality layers to decode. If there are\n");
	fprintf(stdout,"    less quality layers than the specified number, all the quality layers\n");
	fprintf(stdout,"    are decoded.\n");
	fprintf(stdout,"  -x  \n"); 
	fprintf(stdout,"    Create an index file *.Idx (-x index_name.Idx) \n");
	fprintf(stdout,"  -p <comp 0 precision>[C|S][,<comp 1 precision>[C|S][,...]]\n");
	fprintf(stdout,"    OPTIONAL\n");
	fprintf(stdout,"    Force the precision (bit depth) of components.\n");
	fprintf(stdout,"    There shall be at least 1 value. Theres no limit on the number of values (comma separated, last values ignored if too much values).\n");
	fprintf(stdout,"    If there are less values than components, the last value is used for remaining components.\n");
	fprintf(stdout,"    If 'C' is specified (default), values are clipped.\n");
	fprintf(stdout,"    If 'S' is specified, values are scaled.\n");
	fprintf(stdout,"    A 0 value can be specified (meaning original bit depth).\n");
	fprintf(stdout,"  -force-rgb\n");
	fprintf(stdout,"    Force output image colorspace to RGB\n");
	fprintf(stdout,"  -upsample\n");
	fprintf(stdout,"    Downsampled components will be upsampled to image size\n");
	fprintf(stdout,"\n");
/* UniPG>> */
#ifdef USE_JPWL
	fprintf(stdout,"  -W <options>\n");
	fprintf(stdout,"    Activates the JPWL correction capability, if the codestream complies.\n");
	fprintf(stdout,"    Options can be a comma separated list of <param=val> tokens:\n");
	fprintf(stdout,"    c, c=numcomps\n");
	fprintf(stdout,"       numcomps is the number of expected components in the codestream\n");
	fprintf(stdout,"       (search of first EPB rely upon this, default is %d)\n", JPWL_EXPECTED_COMPONENTS);
#endif /* USE_JPWL */
/* <<UniPG */
	fprintf(stdout,"\n");
}

/* -------------------------------------------------------------------------- */

static opj_bool parse_precision(const char* option, opj_decompress_parameters* parameters)
{
	const char* l_remaining = option;
	opj_bool l_result = OPJ_TRUE;
	
	/* reset */
	if (parameters->precision) {
		free(parameters->precision);
		parameters->precision = NULL;
	}
	parameters->nb_precision = 0U;
	
	for(;;)
	{
		int prec;
		char mode;
		char comma;
		int count;
		
		count = sscanf(l_remaining, "%d%c%c", &prec, &mode, &comma);
		if (count == 1) {
			mode = 'C';
			count++;
		}
		if ((count == 2) || (mode==',')) {
			if (mode==',') {
				mode = 'C';
			}
			comma=',';
			count = 3;
		}
		if (count == 3) {
			if ((prec < 1) || (prec > 32)) {
				fprintf(stderr,"Invalid precision %d in precision option %s\n", prec, option);
				l_result = OPJ_FALSE;
				break;
			}
			if ((mode != 'C') && (mode != 'S')) {
				fprintf(stderr,"Invalid precision mode %c in precision option %s\n", mode, option);
				l_result = OPJ_FALSE;
				break;
			}
			if (comma != ',') {
				fprintf(stderr,"Invalid character %c in precision option %s\n", comma, option);
				l_result = OPJ_FALSE;
				break;
			}
			
			if (parameters->precision == NULL) {
				/* first one */
				parameters->precision = (opj_precision *)malloc(sizeof(opj_precision));
				if (parameters->precision == NULL) {
					fprintf(stderr,"Could not allocate memory for precision option\n");
					l_result = OPJ_FALSE;
					break;
				}
			} else {
				int l_new_size = parameters->nb_precision + 1U;
				opj_precision* l_new;
				
				if (l_new_size == 0U) {
					fprintf(stderr,"Could not allocate memory for precision option\n");
					l_result = OPJ_FALSE;
					break;
				}
				
				l_new = (opj_precision *)realloc(parameters->precision, l_new_size * sizeof(opj_precision));
				if (l_new == NULL) {
					fprintf(stderr,"Could not allocate memory for precision option\n");
					l_result = OPJ_FALSE;
					break;
				}
				parameters->precision = l_new;
			}
			
			parameters->precision[parameters->nb_precision].prec = prec;
			switch (mode) {
				case 'C':
					parameters->precision[parameters->nb_precision].mode = OPJ_PREC_MODE_CLIP;
					break;
				case 'S':
					parameters->precision[parameters->nb_precision].mode = OPJ_PREC_MODE_SCALE;
					break;
				default:
					break;
			}
			parameters->nb_precision++;
			
			l_remaining = strchr(l_remaining, ',');
			if (l_remaining == NULL) {
				break;
			}
			l_remaining += 1;
		} else {
			fprintf(stderr,"Could not parse precision option %s\n", option);
			l_result = OPJ_FALSE;
			break;
		}
	}
	
	return l_result;
}

/* -------------------------------------------------------------------------- */

static int get_num_images(char *imgdirpath){
	DIR *dir;
	struct dirent* content;	
	int num_images = 0;

	/*Reading the input images from given input directory*/

	dir= opendir(imgdirpath);
	if(!dir){
		fprintf(stderr,"Could not open Folder %s\n",imgdirpath);
		return 0;
	}
	
	while((content=readdir(dir))!=NULL){
		if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )
			continue;
		num_images++;
	}
	closedir(dir);
	return num_images;
}

static int load_images(dircnt_t *dirptr, char *imgdirpath){
	DIR *dir;
	struct dirent* content;	
	int i = 0;

	/*Reading the input images from given input directory*/

	dir= opendir(imgdirpath);
	if(!dir){
		fprintf(stderr,"Could not open Folder %s\n",imgdirpath);
		return 1;
	}else	{
		fprintf(stderr,"Folder opened successfully\n");
	}
	
	while((content=readdir(dir))!=NULL){
		if(strcmp(".",content->d_name)==0 || strcmp("..",content->d_name)==0 )
			continue;

		strcpy(dirptr->filename[i],content->d_name);
		i++;
	}
	closedir(dir);
	return 0;	
}

static int get_file_format(char *filename) {
	unsigned int i;
	static const char *extension[] = {"pgx", "pnm", "pgm", "ppm", "bmp","tif", "raw", "tga", "png", "j2k", "jp2", "jpt", "j2c", "jpc" };
	static const int format[] = { PGX_DFMT, PXM_DFMT, PXM_DFMT, PXM_DFMT, BMP_DFMT, TIF_DFMT, RAW_DFMT, TGA_DFMT, PNG_DFMT, J2K_CFMT, JP2_CFMT, JPT_CFMT, J2K_CFMT, J2K_CFMT };
	char * ext = strrchr(filename, '.');
	if (ext == NULL)
		return -1;
	ext++;
	if(ext) {
		for(i = 0; i < sizeof(format)/sizeof(*format); i++) {
			if(_strnicmp(ext, extension[i], 3) == 0) {
				return format[i];
			}
		}
	}

	return -1;
}

static char get_next_file(int imageno,dircnt_t *dirptr,img_fol_t *img_fol, opj_decompress_parameters *parameters){
	char image_filename[OPJ_PATH_LEN], infilename[OPJ_PATH_LEN],outfilename[OPJ_PATH_LEN],temp_ofname[OPJ_PATH_LEN];
	char *temp_p, temp1[OPJ_PATH_LEN]="";

	strcpy(image_filename,dirptr->filename[imageno]);
	fprintf(stderr,"File Number %d \"%s\"\n",imageno,image_filename);
	parameters->decod_format = get_file_format(image_filename);
	if (parameters->decod_format == -1)
		return 1;
	sprintf(infilename,"%s/%s",img_fol->imgdirpath,image_filename);
	strncpy(parameters->infile, infilename, sizeof(infilename));

	/*Set output file*/
	strcpy(temp_ofname,strtok(image_filename,"."));
	while((temp_p = strtok(NULL,".")) != NULL){
		strcat(temp_ofname,temp1);
		sprintf(temp1,".%s",temp_p);
	}
	if(img_fol->set_out_format==1){
		sprintf(outfilename,"%s/%s.%s",img_fol->imgdirpath,temp_ofname,img_fol->out_format);
		strncpy(parameters->outfile, outfilename, sizeof(outfilename));
	}
	return 0;
}

/* -------------------------------------------------------------------------- */
static int parse_cmdline_decoder(int argc, char **argv, opj_decompress_parameters *parameters,img_fol_t *img_fol, char *indexfilename) {
	/* parse the command line */
	int totlen, c;
	opj_option_t long_option[]={
		{"ImgDir",REQ_ARG, NULL ,'y'},
		{"OutFor",REQ_ARG, NULL ,'O'},
		{"force-rgb", NO_ARG,  NULL, 1},
		{"upsample",  NO_ARG,  NULL, 1},
#ifdef USE_SYSTEM_GETOPT
		{0,0,0,0} /* GNU getopt_long requirement */
#endif
	};

	const char optlist[] = "i:o:r:l:x:p:"

/* UniPG>> */
#ifdef USE_JPWL
					"W:"
#endif /* USE_JPWL */
/* <<UniPG */
			"h"		;
	
	long_option[2].flag = &(parameters->force_rgb);
	long_option[3].flag = &(parameters->upsample);
	totlen=sizeof(long_option);
	img_fol->set_out_format = 0;
	do {
#ifdef USE_SYSTEM_GETOPT
		c = opj_getopt_long(argc, argv,optlist,long_option,0);
#else
		c = opj_getopt_long(argc, argv,optlist,long_option,totlen);
#endif
		if (c == -1)
			break;
		switch (c) {
			case 0: /* long opt with flag */
				break;
			case 'i':			/* input file */
			{
				char *infile = opj_optarg;
				parameters->decod_format = get_file_format(infile);
				switch(parameters->decod_format) {
					case J2K_CFMT:
					case JP2_CFMT:
					case JPT_CFMT:
						break;
					default:
						fprintf(stderr, 
							"!! Unrecognized format for infile : %s [accept only *.j2k, *.jp2, *.jpc or *.jpt] !!\n\n", 
							infile);
						return 1;
				}
				strncpy(parameters->infile, infile, sizeof(parameters->infile)-1);
			}
			break;
				
				/* ----------------------------------------------------- */

			case 'o':			/* output file */
			{
				char *outfile = opj_optarg;
				parameters->cod_format = get_file_format(outfile);
				switch(parameters->cod_format) {
					case PGX_DFMT:
					case PXM_DFMT:
					case BMP_DFMT:
					case TIF_DFMT:
					case RAW_DFMT:
					case TGA_DFMT:
					case PNG_DFMT:
						break;
					default:
						fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx, *.bmp, *.tif, *.raw or *.tga]!! \n", outfile);
						return 1;
				}
				strncpy(parameters->outfile, outfile, sizeof(parameters->outfile)-1);
			}
			break;
			
				/* ----------------------------------------------------- */

			case 'O':			/* output format */
			{
				char outformat[50];
				char *of = opj_optarg;
				sprintf(outformat,".%s",of);
				img_fol->set_out_format = 1;
				parameters->cod_format = get_file_format(outformat);
				switch(parameters->cod_format) {
					case PGX_DFMT:
						img_fol->out_format = "pgx";
						break;
					case PXM_DFMT:
						img_fol->out_format = "ppm";
						break;
					case BMP_DFMT:
						img_fol->out_format = "bmp";
						break;
					case TIF_DFMT:
						img_fol->out_format = "tif";
						break;
					case RAW_DFMT:
						img_fol->out_format = "raw";
						break;
					case TGA_DFMT:
						img_fol->out_format = "raw";
						break;
					case PNG_DFMT:
						img_fol->out_format = "png";
						break;
					default:
						fprintf(stderr, "Unknown output format image %s [only *.pnm, *.pgm, *.ppm, *.pgx, *.bmp, *.tif, *.raw or *.tga]!! \n", outformat);
						return 1;
						break;
				}
			}
			break;

				/* ----------------------------------------------------- */


			case 'r':		/* reduce option */
			{
				sscanf(opj_optarg, "%d", &parameters->core.cp_reduce);
			}
			break;
			
				/* ----------------------------------------------------- */
      

			case 'l':		/* layering option */
			{
				sscanf(opj_optarg, "%d", &parameters->core.cp_layer);
			}
			break;
			
				/* ----------------------------------------------------- */

			case 'h': 			/* display an help description */
				decode_help_display();
				return 1;				

				/* ------------------------------------------------------ */

			case 'y':			/* Image Directory path */
				{
					img_fol->imgdirpath = (char*)malloc(strlen(opj_optarg) + 1);
					strcpy(img_fol->imgdirpath,opj_optarg);
					img_fol->set_imgdir=1;
				}
				break;
				/* ----------------------------------------------------- */								
			case 'x':			/* Creation of index file */
				{
					char *index = opj_optarg;
					strncpy(indexfilename, index, OPJ_PATH_LEN);
				}
				break;
				/* ----------------------------------------------------- */
			case 'p': /* Force precision */
				{
					if (!parse_precision(opj_optarg, parameters))
					{
						return 1;
					}
				}
				break;
				/* ----------------------------------------------------- */
				/* UniPG>> */
#ifdef USE_JPWL
			
			case 'W': 			/* activate JPWL correction */
			{
				char *token = NULL;

				token = strtok(opj_optarg, ",");
				while(token != NULL) {

					/* search expected number of components */
					if (*token == 'c') {

						static int compno;

						compno = JPWL_EXPECTED_COMPONENTS; /* predefined no. of components */

						if(sscanf(token, "c=%d", &compno) == 1) {
							/* Specified */
							if ((compno < 1) || (compno > 256)) {
								fprintf(stderr, "ERROR -> invalid number of components c = %d\n", compno);
								return 1;
							}
							parameters->jpwl_exp_comps = compno;

						} else if (!strcmp(token, "c")) {
							/* default */
							parameters->jpwl_exp_comps = compno; /* auto for default size */

						} else {
							fprintf(stderr, "ERROR -> invalid components specified = %s\n", token);
							return 1;
						};
					}

					/* search maximum number of tiles */
					if (*token == 't') {

						static int tileno;

						tileno = JPWL_MAXIMUM_TILES; /* maximum no. of tiles */

						if(sscanf(token, "t=%d", &tileno) == 1) {
							/* Specified */
							if ((tileno < 1) || (tileno > JPWL_MAXIMUM_TILES)) {
								fprintf(stderr, "ERROR -> invalid number of tiles t = %d\n", tileno);
								return 1;
							}
							parameters->jpwl_max_tiles = tileno;

						} else if (!strcmp(token, "t")) {
							/* default */
							parameters->jpwl_max_tiles = tileno; /* auto for default size */

						} else {
							fprintf(stderr, "ERROR -> invalid tiles specified = %s\n", token);
							return 1;
						};
					}

					/* next token or bust */
					token = strtok(NULL, ",");
				};
				parameters->jpwl_correct = OPJ_TRUE;
				fprintf(stdout, "JPWL correction capability activated\n");
				fprintf(stdout, "- expecting %d components\n", parameters->jpwl_exp_comps);
			}
			break;	
#endif /* USE_JPWL */
/* <<UniPG */            

				/* ----------------------------------------------------- */
			
			default:
                fprintf(stderr,"[WARNING] An invalid option has been ignored\n");
				break;
		}
	}while(c != -1);

	/* check for possible errors */
	if(img_fol->set_imgdir==1){
		if(!(parameters->infile[0]==0)){
			fprintf(stderr, "Error: options -ImgDir and -i cannot be used together !!\n");
			return 1;
		}
		if(img_fol->set_out_format == 0){
			fprintf(stderr, "Error: When -ImgDir is used, -OutFor <FORMAT> must be used !!\n");
			fprintf(stderr, "Only one format allowed! Valid format PGM, PPM, PNM, PGX, BMP, TIF, RAW and TGA!!\n");
			return 1;
		}
		if(!((parameters->outfile[0] == 0))){
			fprintf(stderr, "Error: options -ImgDir and -o cannot be used together !!\n");
			return 1;
		}
	}else{
		if((parameters->infile[0] == 0) || (parameters->outfile[0] == 0)) {
			fprintf(stderr, "Example: %s -i image.j2k -o image.pgm\n",argv[0]);
			fprintf(stderr, "    Try: %s -h\n",argv[0]);
			return 1;
		}
	}

	return 0;
}

/* -------------------------------------------------------------------------- */

static void set_default_parameters(opj_decompress_parameters* parameters)
{
	if (parameters) {
		memset(parameters, 0, sizeof(opj_decompress_parameters));
		
		/* default decoding parameters (command line specific) */
		parameters->decod_format = -1;
		parameters->cod_format = -1;
		
		/* default decoding parameters (core) */
		opj_set_default_decoder_parameters(&(parameters->core));
	}
}

static void destroy_parameters(opj_decompress_parameters* parameters)
{
	if (parameters) {
		if (parameters->precision) {
			free(parameters->precision);
			parameters->precision = NULL;
		}
	}
}

/* -------------------------------------------------------------------------- */

/**
sample error callback expecting a FILE* client object
*/
static void error_callback(const char *msg, void *client_data) {
	FILE *stream = (FILE*)client_data;
	fprintf(stream, "[ERROR] %s", msg);
}
/**
sample warning callback expecting a FILE* client object
*/
static void warning_callback(const char *msg, void *client_data) {
	FILE *stream = (FILE*)client_data;
	fprintf(stream, "[WARNING] %s", msg);
}
/**
sample debug callback expecting no client object
*/
static void info_callback(const char *msg, void *client_data) {
	(void)client_data;
	fprintf(stdout, "[INFO] %s", msg);
}

/* -------------------------------------------------------------------------- */

static opj_image_t* convert_gray_to_rgb(opj_image_t* original)
{
	int compno;
	opj_image_t* l_new_image = NULL;
	opj_image_cmptparm_t* l_new_components = NULL;
	
	l_new_components = (opj_image_cmptparm_t*)malloc((original->numcomps + 2U) * sizeof(opj_image_cmptparm_t));
	if (l_new_components == NULL) {
		fprintf(stderr, "ERROR -> j2k_to_image: failed to allocate memory for RGB image!\n");
		opj_image_destroy(original);
		return NULL;
	}
	
	l_new_components[0].bpp  = l_new_components[1].bpp  = l_new_components[2].bpp  = original->comps[0].bpp;
	l_new_components[0].dx   = l_new_components[1].dx   = l_new_components[2].dx   = original->comps[0].dx;
	l_new_components[0].dy   = l_new_components[1].dy   = l_new_components[2].dy   = original->comps[0].dy;
	l_new_components[0].h    = l_new_components[1].h    = l_new_components[2].h    = original->comps[0].h;
	l_new_components[0].w    = l_new_components[1].w    = l_new_components[2].w    = original->comps[0].w;
	l_new_components[0].prec = l_new_components[1].prec = l_new_components[2].prec = original->comps[0].prec;
	l_new_components[0].sgnd = l_new_components[1].sgnd = l_new_components[2].sgnd = original->comps[0].sgnd;
	l_new_components[0].x0   = l_new_components[1].x0   = l_new_components[2].x0   = original->comps[0].x0;
	l_new_components[0].y0   = l_new_components[1].y0   = l_new_components[2].y0   = original->comps[0].y0;
	
	for(compno = 1; compno < original->numcomps; ++compno) {
		l_new_components[compno+2].bpp  = original->comps[compno].bpp;
		l_new_components[compno+2].dx   = original->comps[compno].dx;
		l_new_components[compno+2].dy   = original->comps[compno].dy;
		l_new_components[compno+2].h    = original->comps[compno].h;
		l_new_components[compno+2].w    = original->comps[compno].w;
		l_new_components[compno+2].prec = original->comps[compno].prec;
		l_new_components[compno+2].sgnd = original->comps[compno].sgnd;
		l_new_components[compno+2].x0   = original->comps[compno].x0;
		l_new_components[compno+2].y0   = original->comps[compno].y0;
	}
	
	l_new_image = opj_image_create(original->numcomps + 2, l_new_components, CLRSPC_SRGB);
	free(l_new_components);
	if (l_new_image == NULL) {
		fprintf(stderr, "ERROR -> j2k_to_image: failed to allocate memory for RGB image!\n");
		opj_image_destroy(original);
		return NULL;
	}
	
	l_new_image->x0 = original->x0;
	l_new_image->x1 = original->x1;
	l_new_image->y0 = original->y0;
	l_new_image->y1 = original->y1;
	
	l_new_image->comps[0].factor        = l_new_image->comps[1].factor        = l_new_image->comps[2].factor        = original->comps[0].factor;
	l_new_image->comps[0].resno_decoded = l_new_image->comps[1].resno_decoded = l_new_image->comps[2].resno_decoded = original->comps[0].resno_decoded;
	
	memcpy(l_new_image->comps[0].data, original->comps[0].data, original->comps[0].w * original->comps[0].h * sizeof(int));
	memcpy(l_new_image->comps[1].data, original->comps[0].data, original->comps[0].w * original->comps[0].h * sizeof(int));
	memcpy(l_new_image->comps[2].data, original->comps[0].data, original->comps[0].w * original->comps[0].h * sizeof(int));
	
	for(compno = 1; compno < original->numcomps; ++compno) {
		l_new_image->comps[compno+2].factor        = original->comps[compno].factor;
		l_new_image->comps[compno+2].resno_decoded = original->comps[compno].resno_decoded;
		memcpy(l_new_image->comps[compno+2].data, original->comps[compno].data, original->comps[compno].w * original->comps[compno].h * sizeof(int));
	}
	opj_image_destroy(original);
	return l_new_image;
}

/* -------------------------------------------------------------------------- */

static opj_image_t* upsample_image_components(opj_image_t* original)
{
	opj_image_t* l_new_image = NULL;
	opj_image_cmptparm_t* l_new_components = NULL;
	opj_bool l_upsample_need = OPJ_FALSE;
	int compno;
	
	for (compno = 0; compno < original->numcomps; ++compno) {
		if (original->comps[compno].factor > 0) {
			fprintf(stderr, "ERROR -> j2k_to_image: -upsample not supported with reduction\n");
			opj_image_destroy(original);
			return NULL;
		}
		if ((original->comps[compno].dx > 1) || (original->comps[compno].dy > 1)) {
			l_upsample_need = OPJ_TRUE;
			break;
		}
	}
	if (!l_upsample_need) {
		return original;
	}
	/* Upsample is needed */
	l_new_components = (opj_image_cmptparm_t*)malloc(original->numcomps * sizeof(opj_image_cmptparm_t));
	if (l_new_components == NULL) {
		fprintf(stderr, "ERROR -> j2k_to_image: failed to allocate memory for upsampled components!\n");
		opj_image_destroy(original);
		return NULL;
	}
	
	for (compno = 0; compno < original->numcomps; ++compno) {
		opj_image_cmptparm_t* l_new_cmp = &(l_new_components[compno]);
		opj_image_comp_t*     l_org_cmp = &(original->comps[compno]);
		
		l_new_cmp->bpp  = l_org_cmp->bpp;
		l_new_cmp->prec = l_org_cmp->prec;
		l_new_cmp->sgnd = l_org_cmp->sgnd;
		l_new_cmp->x0   = original->x0;
		l_new_cmp->y0   = original->y0;
		l_new_cmp->dx   = 1;
		l_new_cmp->dy   = 1;
		l_new_cmp->w    = l_org_cmp->w; /* should be original->x1 - original->x0 for dx==1 */
		l_new_cmp->h    = l_org_cmp->h; /* should be original->y1 - original->y0 for dy==0 */
		
		if (l_org_cmp->dx > 1) {
			l_new_cmp->w = original->x1 - original->x0;
		}
		
		if (l_org_cmp->dy > 1) {
			l_new_cmp->h = original->y1 - original->y0;
		}
	}
	
	l_new_image = opj_image_create(original->numcomps, l_new_components, original->color_space);
	free(l_new_components);
	if (l_new_image == NULL) {
		fprintf(stderr, "ERROR -> j2k_to_image: failed to allocate memory for upsampled components!\n");
		opj_image_destroy(original);
		return NULL;
	}
	
	l_new_image->x0 = original->x0;
	l_new_image->x1 = original->x1;
	l_new_image->y0 = original->y0;
	l_new_image->y1 = original->y1;
	
	for (compno = 0; compno < original->numcomps; ++compno) {
		opj_image_comp_t* l_new_cmp = &(l_new_image->comps[compno]);
		opj_image_comp_t* l_org_cmp = &(original->comps[compno]);
		
		l_new_cmp->factor        = l_org_cmp->factor;
		l_new_cmp->resno_decoded = l_org_cmp->resno_decoded;
		
		if ((l_org_cmp->dx > 1) || (l_org_cmp->dy > 1)) {
			const int* l_src = l_org_cmp->data;
			int*       l_dst = l_new_cmp->data;
			int y;
			int xoff, yoff;
			
			/* need to take into account dx & dy */
			xoff = l_org_cmp->dx * l_org_cmp->x0 -  original->x0;
			yoff = l_org_cmp->dy * l_org_cmp->y0 -  original->y0;
			if ((xoff >= l_org_cmp->dx) || (yoff >= l_org_cmp->dy)) {
				fprintf(stderr, "ERROR -> j2k_to_image: Invalid image/component parameters found when upsampling\n");
				opj_image_destroy(original);
				opj_image_destroy(l_new_image);
				return NULL;
			}
			
			for (y = 0; y < yoff; ++y) {
				memset(l_dst, 0, l_new_cmp->w * sizeof(int));
				l_dst += l_new_cmp->w;
			}
			
			if(l_new_cmp->h > (l_org_cmp->dy - 1)) { /* check subtraction overflow for really small images */
				for (; y < l_new_cmp->h - (l_org_cmp->dy - 1); y += l_org_cmp->dy) {
					int x, dy;
					int xorg;
					
					xorg = 0;
					for (x = 0; x < xoff; ++x) {
						l_dst[x] = 0;
					}
					if (l_new_cmp->w > (l_org_cmp->dx - 1)) { /* check subtraction overflow for really small images */
						for (; x < l_new_cmp->w - (l_org_cmp->dx - 1); x += l_org_cmp->dx, ++xorg) {
							int dx;
							for (dx = 0; dx < l_org_cmp->dx; ++dx) {
								l_dst[x + dx] = l_src[xorg];
							}
						}
					}
					for (; x < l_new_cmp->w; ++x) {
						l_dst[x] = l_src[xorg];
					}
					l_dst += l_new_cmp->w;
					
					for (dy = 1; dy < l_org_cmp->dy; ++dy) {
						memcpy(l_dst, l_dst - l_new_cmp->w, l_new_cmp->w * sizeof(int));
						l_dst += l_new_cmp->w;
					}
					l_src += l_org_cmp->w;
				}
			}
			if (y < l_new_cmp->h) {
				int x;
				int xorg;
				
				xorg = 0;
				for (x = 0; x < xoff; ++x) {
					l_dst[x] = 0;
				}
				if (l_new_cmp->w > (l_org_cmp->dx - 1)) { /* check subtraction overflow for really small images */
					for (; x < l_new_cmp->w - (l_org_cmp->dx - 1); x += l_org_cmp->dx, ++xorg) {
						int dx;
						for (dx = 0; dx < l_org_cmp->dx; ++dx) {
							l_dst[x + dx] = l_src[xorg];
						}
					}
				}
				for (; x < l_new_cmp->w; ++x) {
					l_dst[x] = l_src[xorg];
				}
				l_dst += l_new_cmp->w;
				++y;
				for (; y < l_new_cmp->h; ++y) {
					memcpy(l_dst, l_dst - l_new_cmp->w, l_new_cmp->w * sizeof(int));
					l_dst += l_new_cmp->w;
				}
			}
		}
		else {
			memcpy(l_new_cmp->data, l_org_cmp->data, l_org_cmp->w * l_org_cmp->h * sizeof(int));
		}
	}
	opj_image_destroy(original);
	return l_new_image;
}

/* -------------------------------------------------------------------------- */

int main(int argc, char **argv) {
	opj_decompress_parameters parameters;	/* decompression parameters */
	img_fol_t img_fol;
	opj_event_mgr_t event_mgr;		/* event manager */
	opj_image_t *image = NULL;
	FILE *fsrc = NULL;
	unsigned char *src = NULL;
	int file_length;
	int num_images;
	int i,imageno;
	dircnt_t *dirptr = NULL;
	opj_dinfo_t* dinfo = NULL;	/* handle to a decompressor */
	opj_cio_t *cio = NULL;
	opj_codestream_info_t cstr_info;  /* Codestream information structure */
	char indexfilename[OPJ_PATH_LEN];	/* index file name */

	/* configure the event callbacks (not required) */
	memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
	event_mgr.error_handler = error_callback;
	event_mgr.warning_handler = warning_callback;
	event_mgr.info_handler = info_callback;

	/* set decoding parameters to default values */
	set_default_parameters(&parameters);

	/* Initialize indexfilename and img_fol */
	*indexfilename = 0;
	memset(&img_fol,0,sizeof(img_fol_t));

	/* parse input and get user encoding parameters */
	if(parse_cmdline_decoder(argc, argv, &parameters,&img_fol, indexfilename) == 1) {
		destroy_parameters(&parameters);
		return 1;
	}

	/* Initialize reading of directory */
	if(img_fol.set_imgdir==1){	
		num_images=get_num_images(img_fol.imgdirpath);

		dirptr=(dircnt_t*)malloc(sizeof(dircnt_t));
		if(dirptr){
			dirptr->filename_buf = (char*)malloc(num_images*OPJ_PATH_LEN*sizeof(char));	/* Stores at max 10 image file names*/
			dirptr->filename = (char**) malloc(num_images*sizeof(char*));

			if(!dirptr->filename_buf){
				destroy_parameters(&parameters);
				return 1;
			}
			for(i=0;i<num_images;i++){
				dirptr->filename[i] = dirptr->filename_buf + i*OPJ_PATH_LEN;
			}
		}
		if(load_images(dirptr,img_fol.imgdirpath)==1){
			destroy_parameters(&parameters);
			return 1;
		}
		if (num_images==0){
			fprintf(stdout,"Folder is empty\n");
			destroy_parameters(&parameters);
			return 1;
		}
	}else{
		num_images=1;
	}

	/*Encoding image one by one*/
	for(imageno = 0; imageno < num_images ; imageno++)	{
		image = NULL;
		fprintf(stderr,"\n");

		if(img_fol.set_imgdir==1){
			if (get_next_file(imageno, dirptr,&img_fol, &parameters)) {
				fprintf(stderr,"skipping file...\n");
				continue;
			}
		}

		/* read the input file and put it in memory */
		/* ---------------------------------------- */
		fsrc = fopen(parameters.infile, "rb");
		if (!fsrc) {
			fprintf(stderr, "ERROR -> failed to open %s for reading\n", parameters.infile);
			destroy_parameters(&parameters);
			return 1;
		}
		fseek(fsrc, 0, SEEK_END);
		file_length = ftell(fsrc);
		fseek(fsrc, 0, SEEK_SET);
		src = (unsigned char *) malloc(file_length);
		if (fread(src, 1, file_length, fsrc) != (size_t)file_length)
		{
			free(src);
			fclose(fsrc);
			fprintf(stderr, "\nERROR: fread return a number of element different from the expected.\n");
			destroy_parameters(&parameters);
			return 1;
		}
		fclose(fsrc);

		/* decode the code-stream */
		/* ---------------------- */

		switch(parameters.decod_format) {
		case J2K_CFMT:
		{
			/* JPEG-2000 codestream */

			/* get a decoder handle */
			dinfo = opj_create_decompress(CODEC_J2K);

			/* catch events using our callbacks and give a local context */
			opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);

			/* setup the decoder decoding parameters using user parameters */
			opj_setup_decoder(dinfo, &parameters.core);

			/* open a byte stream */
			cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);

			/* decode the stream and fill the image structure */
			if (*indexfilename)				/* If need to extract codestream information*/
				image = opj_decode_with_info(dinfo, cio, &cstr_info);
			else
				image = opj_decode(dinfo, cio);
			if(!image) {
				fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
				opj_destroy_decompress(dinfo);
				opj_cio_close(cio);
				free(src);
				destroy_parameters(&parameters);
				return 1;
			}

			/* close the byte stream */
			opj_cio_close(cio);

			/* Write the index to disk */
			if (*indexfilename) {
				opj_bool bSuccess;
				bSuccess = write_index_file(&cstr_info, indexfilename);
				if (bSuccess) {
					fprintf(stderr, "Failed to output index file\n");
				}
			}
		}
		break;

		case JP2_CFMT:
		{
			/* JPEG 2000 compressed image data */

			/* get a decoder handle */
			dinfo = opj_create_decompress(CODEC_JP2);

			/* catch events using our callbacks and give a local context */
			opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);

			/* setup the decoder decoding parameters using the current image and user parameters */
			opj_setup_decoder(dinfo, &parameters.core);

			/* open a byte stream */
			cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);

			/* decode the stream and fill the image structure */
			if (*indexfilename)				/* If need to extract codestream information*/
				image = opj_decode_with_info(dinfo, cio, &cstr_info);
			else
				image = opj_decode(dinfo, cio);			
			if(!image) {
				fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
				opj_destroy_decompress(dinfo);
				opj_cio_close(cio);
				free(src);
				destroy_parameters(&parameters);
				return 1;
			}

			/* close the byte stream */
			opj_cio_close(cio);

			/* Write the index to disk */
			if (*indexfilename) {
				opj_bool bSuccess;
				bSuccess = write_index_file(&cstr_info, indexfilename);
				if (bSuccess) {
					fprintf(stderr, "Failed to output index file\n");
				}
			}
		}
		break;

		case JPT_CFMT:
		{
			/* JPEG 2000, JPIP */

			/* get a decoder handle */
			dinfo = opj_create_decompress(CODEC_JPT);

			/* catch events using our callbacks and give a local context */
			opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);

			/* setup the decoder decoding parameters using user parameters */
			opj_setup_decoder(dinfo, &parameters.core);

			/* open a byte stream */
			cio = opj_cio_open((opj_common_ptr)dinfo, src, file_length);

			/* decode the stream and fill the image structure */
			if (*indexfilename)				/* If need to extract codestream information*/
				image = opj_decode_with_info(dinfo, cio, &cstr_info);
			else
				image = opj_decode(dinfo, cio);
			if(!image) {
				fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
				opj_destroy_decompress(dinfo);
				opj_cio_close(cio);
				free(src);
				destroy_parameters(&parameters);
				return 1;
			}

			/* close the byte stream */
			opj_cio_close(cio);

			/* Write the index to disk */
			if (*indexfilename) {
				opj_bool bSuccess;
				bSuccess = write_index_file(&cstr_info, indexfilename);
				if (bSuccess) {
					fprintf(stderr, "Failed to output index file\n");
				}
			}
		}
		break;

		default:
			fprintf(stderr, "skipping file..\n");
			continue;
	}

		/* free the memory containing the code-stream */
		free(src);
		src = NULL;

		if(image->color_space == CLRSPC_SYCC)
		{
			color_sycc_to_rgb(image);
		}

		if(image->icc_profile_buf)
		{
#if defined(HAVE_LIBLCMS1) || defined(HAVE_LIBLCMS2)
			color_apply_icc_profile(image);
#endif
			free(image->icc_profile_buf);
			image->icc_profile_buf = NULL; image->icc_profile_len = 0;
		}
		
		/* Force output precision */
		/* ---------------------- */
		if (parameters.precision != NULL)
		{
			int compno;
			for (compno = 0; compno < image->numcomps; ++compno)
			{
				int precno = compno;
				int prec;
				
				if (precno >= parameters.nb_precision) {
					precno = parameters.nb_precision - 1U;
				}
				
				prec = parameters.precision[precno].prec;
				if (prec == 0) {
					prec = image->comps[compno].prec;
				}
				
				switch (parameters.precision[precno].mode) {
					case OPJ_PREC_MODE_CLIP:
						clip_component(&(image->comps[compno]), prec);
						break;
					case OPJ_PREC_MODE_SCALE:
						scale_component(&(image->comps[compno]), prec);
						break;
					default:
						break;
				}
				
			}
		}
		
		/* Upsample components */
		/* ------------------- */
		if (parameters.upsample)
		{
			image = upsample_image_components(image);
			if (image == NULL) {
				fprintf(stderr, "ERROR -> j2k_to_image: failed to upsample image components!\n");
				destroy_parameters(&parameters);
				opj_destroy_decompress(dinfo);
				return EXIT_FAILURE;
			}
		}
		
		/* Force RGB output */
		/* ---------------- */
		if (parameters.force_rgb)
		{
			switch (image->color_space) {
				case CLRSPC_SRGB:
					break;
				case CLRSPC_GRAY:
					image = convert_gray_to_rgb(image);
					break;
				default:
					fprintf(stderr, "ERROR -> j2k_to_image: don't know how to convert image to RGB colorspace!\n");
					opj_image_destroy(image);
					image = NULL;
					break;
			}
			if (image == NULL) {
				fprintf(stderr, "ERROR -> j2k_to_image: failed to convert to RGB image!\n");
				destroy_parameters(&parameters);
				opj_destroy_decompress(dinfo);
				return EXIT_FAILURE;
			}
		}

		/* create output image */
		/* ------------------- */
		switch (parameters.cod_format) {
		case PXM_DFMT:			/* PNM PGM PPM */
			if (imagetopnm(image, parameters.outfile)) {
				fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
			}
			else {
				fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
			}
			break;

		case PGX_DFMT:			/* PGX */
			if(imagetopgx(image, parameters.outfile)){
				fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
			}
			else {
				fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
			}
			break;

		case BMP_DFMT:			/* BMP */
			if(imagetobmp(image, parameters.outfile)){
				fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
			}
			else {
				fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
			}
			break;
#ifdef HAVE_LIBTIFF
		case TIF_DFMT:			/* TIFF */
			if(imagetotif(image, parameters.outfile)){
				fprintf(stdout,"Outfile %s not generated\n",parameters.outfile);
			}
			else {
				fprintf(stdout,"Generated Outfile %s\n",parameters.outfile);
			}
			break;
#endif /* HAVE_LIBTIFF */
		case RAW_DFMT:			/* RAW */
			if(imagetoraw(image, parameters.outfile)){
				fprintf(stdout,"Error generating raw file. Outfile %s not generated\n",parameters.outfile);
			}
			else {
				fprintf(stdout,"Successfully generated Outfile %s\n",parameters.outfile);
			}
			break;

		case TGA_DFMT:			/* TGA */
			if(imagetotga(image, parameters.outfile)){
				fprintf(stdout,"Error generating tga file. Outfile %s not generated\n",parameters.outfile);
			}
			else {
				fprintf(stdout,"Successfully generated Outfile %s\n",parameters.outfile);
			}
			break;
#ifdef HAVE_LIBPNG
		case PNG_DFMT:			/* PNG */
			if(imagetopng(image, parameters.outfile)){
				fprintf(stdout,"Error generating png file. Outfile %s not generated\n",parameters.outfile);
			}
			else {
				fprintf(stdout,"Successfully generated Outfile %s\n",parameters.outfile);
			}
			break;
#endif /* HAVE_LIBPNG */
/* Can happen if output file is TIFF or PNG
 * and HAVE_LIBTIF or HAVE_LIBPNG is undefined
*/
			default:
				fprintf(stderr,"Outfile %s not generated\n",parameters.outfile);
		}

		/* free remaining structures */
		if(dinfo) {
			opj_destroy_decompress(dinfo);
		}
		/* free codestream information structure */
		if (*indexfilename)	
			opj_destroy_cstr_info(&cstr_info);
		/* free image data structure */
		opj_image_destroy(image);

	}
	destroy_parameters(&parameters);
	return 0;
}
/*end main*/