path: root/libopenjpeg/openjpeg.c

/*
 * Copyright (c) 2005, Hervé Drolon, FreeImage Team
 * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
 * 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.
 */

#ifdef WIN32
#include <windows.h>
#endif /* WIN32 */

#include "openjpeg.h"
#include "opj_malloc.h"
#include "j2k.h"
#include "jp2.h"
#include "event.h"
#include "cio.h"

typedef struct opj_decompression
{
	bool (* opj_read_header) (
		void *p_codec,
		opj_image_t **,
		OPJ_INT32 * p_tile_x0,
		OPJ_INT32 * p_tile_y0,
		OPJ_UINT32 * p_tile_width,
		OPJ_UINT32 * p_tile_height,
		OPJ_UINT32 * p_nb_tiles_x,
		OPJ_UINT32 * p_nb_tiles_y,
		struct opj_stream_private *cio,	
		struct opj_event_mgr * p_manager);
	opj_image_t* (* opj_decode) (void * p_codec, struct opj_stream_private *p_cio, struct opj_event_mgr * p_manager);
	bool (*opj_read_tile_header)(
		void * p_codec,
		OPJ_UINT32 * p_tile_index,
		OPJ_UINT32* p_data_size,
		OPJ_INT32 * p_tile_x0,
		OPJ_INT32 * p_tile_y0,
		OPJ_INT32 * p_tile_x1,
		OPJ_INT32 * p_tile_y1,
		OPJ_UINT32 * p_nb_comps,
		bool * p_should_go_on,
		struct opj_stream_private *p_cio,
		struct opj_event_mgr * p_manager);
		bool (*opj_decode_tile_data)(void * p_codec,OPJ_UINT32 p_tile_index,OPJ_BYTE * p_data,OPJ_UINT32 p_data_size,struct opj_stream_private *p_cio,struct opj_event_mgr * p_manager);
	bool (* opj_end_decompress) (void *p_codec,struct opj_stream_private *cio,struct opj_event_mgr * p_manager);
	void (* opj_destroy) (void * p_codec);
	void (*opj_setup_decoder) (void * p_codec,opj_dparameters_t * p_param);
	bool (*opj_set_decode_area) (void * p_codec,OPJ_INT32 p_start_x,OPJ_INT32 p_end_x,OPJ_INT32 p_start_y,OPJ_INT32 p_end_y,struct opj_event_mgr * p_manager);


}opj_decompression_t;

typedef struct opj_compression
{
	bool (* opj_start_compress) (void *p_codec,struct opj_stream_private *cio,struct opj_image * p_image,	struct opj_event_mgr * p_manager);
	bool (* opj_encode) (void * p_codec, struct opj_stream_private *p_cio, struct opj_event_mgr * p_manager);
	bool (* opj_write_tile) (void * p_codec,OPJ_UINT32 p_tile_index,OPJ_BYTE * p_data,OPJ_UINT32 p_data_size,struct opj_stream_private * p_cio,struct opj_event_mgr * p_manager);
	bool (* opj_end_compress) (void * p_codec, struct opj_stream_private *p_cio, struct opj_event_mgr * p_manager);
	void (* opj_destroy) (void * p_codec);
	void (*opj_setup_encoder) (void * p_codec,opj_cparameters_t * p_param,struct opj_image * p_image, struct opj_event_mgr * p_manager);
	
}opj_compression_t;



typedef struct opj_codec_private
{
	union
	{		/* code-blocks informations */
	  opj_decompression_t m_decompression;
	  opj_compression_t m_compression;
    } m_codec_data;
	void * m_codec;
	opj_event_mgr_t m_event_mgr;
	unsigned is_decompressor : 1;
}
opj_codec_private_t;



/**
 * Default callback function.
 * Do nothing.
 */
void opj_default_callback (const char *msg, void *client_data)
{
}

void set_default_event_handler(opj_event_mgr_t * p_manager)
{
	p_manager->m_error_data = 00;
	p_manager->m_warning_data = 00;
	p_manager->m_info_data = 00;
	p_manager->error_handler = opj_default_callback;
	p_manager->info_handler = opj_default_callback;
	p_manager->warning_handler = opj_default_callback;
}

OPJ_UINT32 opj_read_from_file (void * p_buffer, OPJ_UINT32 p_nb_bytes, FILE * p_file)
{
	OPJ_UINT32 l_nb_read = fread(p_buffer,1,p_nb_bytes,p_file);
	return l_nb_read ? l_nb_read : -1;
}

OPJ_UINT32 opj_write_from_file (void * p_buffer, OPJ_UINT32 p_nb_bytes, FILE * p_file)
{
	return fwrite(p_buffer,1,p_nb_bytes,p_file);
}

OPJ_SIZE_T opj_skip_from_file (OPJ_SIZE_T p_nb_bytes, FILE * p_user_data)
{
	if
		(fseek(p_user_data,p_nb_bytes,SEEK_CUR))
	{
		return -1;
	}
	return p_nb_bytes;
}

bool opj_seek_from_file (OPJ_SIZE_T p_nb_bytes, FILE * p_user_data)
{
	if
		(fseek(p_user_data,p_nb_bytes,SEEK_SET))
	{
		return false;
	}
	return true;
}

/* ---------------------------------------------------------------------- */
#ifdef WIN32
#ifndef OPJ_STATIC
BOOL APIENTRY
DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
	switch (ul_reason_for_call) {
		case DLL_PROCESS_ATTACH :
			break;
		case DLL_PROCESS_DETACH :
			break;
		case DLL_THREAD_ATTACH :
		case DLL_THREAD_DETACH :
			break;
    }

    return TRUE;
}
#endif /* OPJ_STATIC */
#endif /* WIN32 */

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


const char* OPJ_CALLCONV opj_version(void) {
    return OPENJPEG_VERSION;
}

opj_codec_t* OPJ_CALLCONV opj_create_decompress(OPJ_CODEC_FORMAT p_format) 
{
	opj_codec_private_t *l_info = 00;
	
	l_info = (opj_codec_private_t*) opj_calloc(1, sizeof(opj_codec_private_t));
	if
		(!l_info) 
	{
		return 00;
	}
	memset(l_info, 0, sizeof(opj_codec_private_t));
	l_info->is_decompressor = 1;
	switch
		(p_format) 
	{
		case CODEC_J2K:
			l_info->m_codec_data.m_decompression.opj_decode = (opj_image_t* (*) (void *, struct opj_stream_private *, struct opj_event_mgr * ))j2k_decode;
			l_info->m_codec_data.m_decompression.opj_end_decompress =  (bool (*) (void *,struct opj_stream_private *,struct opj_event_mgr *))j2k_end_decompress;
			l_info->m_codec_data.m_decompression.opj_read_header =  (bool (*) (
				void *,
				opj_image_t **,
				OPJ_INT32 * ,
				OPJ_INT32 * ,
				OPJ_UINT32 * ,
				OPJ_UINT32 * ,
				OPJ_UINT32 * ,
				OPJ_UINT32 * ,
				struct opj_stream_private *,	
				struct opj_event_mgr * )) j2k_read_header;
			l_info->m_codec_data.m_decompression.opj_destroy = (void (*) (void *))j2k_destroy;
			l_info->m_codec_data.m_decompression.opj_setup_decoder = (void (*) (void * ,opj_dparameters_t * )) j2k_setup_decoder;
			l_info->m_codec_data.m_decompression.opj_read_tile_header = (bool (*) (
				void *,
				OPJ_UINT32*,
				OPJ_UINT32*,
				OPJ_INT32 * ,
				OPJ_INT32 * ,
				OPJ_INT32 * ,
				OPJ_INT32 * ,
				OPJ_UINT32 * ,
				bool *,
				struct opj_stream_private *,	
				struct opj_event_mgr * )) j2k_read_tile_header;
				l_info->m_codec_data.m_decompression.opj_decode_tile_data = (bool (*) (void *,OPJ_UINT32,OPJ_BYTE*,OPJ_UINT32,struct opj_stream_private *,	struct opj_event_mgr * )) j2k_decode_tile;
			l_info->m_codec_data.m_decompression.opj_set_decode_area = (bool (*) (void *,OPJ_INT32,OPJ_INT32,OPJ_INT32,OPJ_INT32, struct opj_event_mgr * )) j2k_set_decode_area;
			l_info->m_codec = j2k_create_decompress();
			if
				(! l_info->m_codec)
			{
				opj_free(l_info);
				return 00;
			}
			break;
		
		case CODEC_JP2:
			/* get a JP2 decoder handle */
			l_info->m_codec_data.m_decompression.opj_decode = (opj_image_t* (*) (void *, struct opj_stream_private *, struct opj_event_mgr * ))opj_jp2_decode;
			l_info->m_codec_data.m_decompression.opj_end_decompress =  (bool (*) (void *,struct opj_stream_private *,struct opj_event_mgr *)) jp2_end_decompress;
			l_info->m_codec_data.m_decompression.opj_read_header =  (bool (*) (
				void *,
				opj_image_t **,
			
				OPJ_INT32 * ,
				OPJ_INT32 * ,
				OPJ_UINT32 * ,
				OPJ_UINT32 * ,
				OPJ_UINT32 * ,
				OPJ_UINT32 * ,
				struct opj_stream_private *,	
				struct opj_event_mgr * )) jp2_read_header;

			l_info->m_codec_data.m_decompression.opj_read_tile_header = (
				bool (*) (
					void *,
					OPJ_UINT32*,
					OPJ_UINT32*,
					OPJ_INT32*,
					OPJ_INT32*,
					OPJ_INT32 * ,
					OPJ_INT32 * ,
					OPJ_UINT32 * ,
					bool *,
					struct opj_stream_private *,	
					struct opj_event_mgr * )) jp2_read_tile_header;

			l_info->m_codec_data.m_decompression.opj_decode_tile_data = (bool (*) (void *,OPJ_UINT32,OPJ_BYTE*,OPJ_UINT32,struct opj_stream_private *,	struct opj_event_mgr * )) opj_jp2_decode_tile;

			l_info->m_codec_data.m_decompression.opj_destroy = (void (*) (void *))jp2_destroy;
			l_info->m_codec_data.m_decompression.opj_setup_decoder = (void (*) (void * ,opj_dparameters_t * )) jp2_setup_decoder;
			l_info->m_codec_data.m_decompression.opj_set_decode_area = (bool (*) (void *,OPJ_INT32,OPJ_INT32,OPJ_INT32,OPJ_INT32, struct opj_event_mgr * )) jp2_set_decode_area;

			
			l_info->m_codec = jp2_create(true);
			if
				(! l_info->m_codec)
			{
				opj_free(l_info);
				return 00;
			}
			break;
		case CODEC_UNKNOWN:
		case CODEC_JPT:
		default:
			opj_free(l_info);
			return 00;
	}
	set_default_event_handler(&(l_info->m_event_mgr));
	return (opj_codec_t*) l_info;
}

void OPJ_CALLCONV opj_destroy_codec(opj_codec_t *p_info) 
{
	if
		(p_info) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_info;
		if
			(l_info->is_decompressor)
		{
			l_info->m_codec_data.m_decompression.opj_destroy(l_info->m_codec);
		}
		else
		{
			l_info->m_codec_data.m_compression.opj_destroy(l_info->m_codec);
		}
		l_info->m_codec = 00;
		opj_free(l_info);
	}
}

void OPJ_CALLCONV opj_set_default_decoder_parameters(opj_dparameters_t *parameters) {
	if(parameters) {
		memset(parameters, 0, sizeof(opj_dparameters_t));
		/* default decoding parameters */
		parameters->cp_layer = 0;
		parameters->cp_reduce = 0;

		parameters->decod_format = -1;
		parameters->cod_format = -1;
/* UniPG>> */
#ifdef USE_JPWL
		parameters->jpwl_correct = false;
		parameters->jpwl_exp_comps = JPWL_EXPECTED_COMPONENTS;
		parameters->jpwl_max_tiles = JPWL_MAXIMUM_TILES;
#endif /* USE_JPWL */
/* <<UniPG */
	}
}

bool OPJ_CALLCONV opj_setup_decoder(opj_codec_t *p_info, opj_dparameters_t *parameters) {
	if
		(p_info && parameters) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_info;
		if
			(! l_info->is_decompressor)
		{
			return false;
		}
		l_info->m_codec_data.m_decompression.opj_setup_decoder(l_info->m_codec,parameters);
		return true;
	}
	return false;
}

opj_image_t* OPJ_CALLCONV opj_decode(opj_codec_t *p_info, opj_stream_t *cio) 
{
	if
		(p_info && cio) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_info;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) cio;
		if
			(! l_info->is_decompressor)
		{
			return 00;
		}
		return l_info->m_codec_data.m_decompression.opj_decode(l_info->m_codec,l_cio,&(l_info->m_event_mgr));
	}
	return 00;
}

/**
 * Writes a tile with the given data.
 * 
 * @param	p_compressor		the jpeg2000 codec.
 * @param	p_tile_index		the index of the tile to write. At the moment, the tiles must be written from 0 to n-1 in sequence.
 * @param	p_data				pointer to the data to write. Data is arranged in sequence, data_comp0, then data_comp1, then ... NO INTERLEAVING should be set.
 * @param	p_data_size			this value os used to make sure the data being written is correct. The size must be equal to the sum for each component of tile_width * tile_height * component_size. component_size can be 1,2 or 4 bytes,
 *								depending on the precision of the given component.
 * @param	p_stream			the stream to write data to.
 */
bool OPJ_CALLCONV opj_write_tile (
					 opj_codec_t *p_codec,
					 OPJ_UINT32 p_tile_index,
					 OPJ_BYTE * p_data,
					 OPJ_UINT32 p_data_size,
					 opj_stream_t *p_stream
					)
{
	if
		(p_codec && p_stream && p_data) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) p_stream;
		if
			(l_info->is_decompressor)
		{
			return false;
		}
		return l_info->m_codec_data.m_compression.opj_write_tile(l_info->m_codec,p_tile_index,p_data,p_data_size,l_cio,&(l_info->m_event_mgr));
	}
	return false;
}

/**
 * Reads a tile header. This function is compulsory and allows one to know the size of the tile thta will be decoded.
 * The user may need to refer to the image got by opj_read_header to understand the size being taken by the tile.
 *
 * @param	p_codec			the jpeg2000 codec.
 * @param	p_tile_index	pointer to a value that will hold the index of the tile being decoded, in case of success.
 * @param	p_data_size		pointer to a value that will hold the maximum size of the decoded data, in case of success. In case
 *							of truncated codestreams, the actual number of bytes decoded may be lower. The computation of the size is the same
 *							as depicted in opj_write_tile.
 * @param	p_tile_x0		pointer to a value that will hold the x0 pos of the tile (in the image).
 * @param	p_tile_y0		pointer to a value that will hold the y0 pos of the tile (in the image).
 * @param	p_tile_x1		pointer to a value that will hold the x1 pos of the tile (in the image).
 * @param	p_tile_y1		pointer to a value that will hold the y1 pos of the tile (in the image).
 * @param	p_nb_comps		pointer to a value that will hold the number of components in the tile.
 * @param	p_should_go_on	pointer to a boolean that will hold the fact that the decoding should go on. In case the
 *							codestream is over at the time of the call, the value will be set to false. The user should then stop
 *							the decoding.
 * @param	p_stream		the stream to decode.
 * @return	true			if the tile header could be decoded. In case the decoding should end, the returned value is still true.
 *							returning false may be the result of a shortage of memory or an internal error.
 */				
bool OPJ_CALLCONV opj_read_tile_header(
					opj_codec_t *p_codec,
					OPJ_UINT32 * p_tile_index,
					OPJ_UINT32 * p_data_size,
					OPJ_INT32 * p_tile_x0,
					OPJ_INT32 * p_tile_y0,
					OPJ_INT32 * p_tile_x1,
					OPJ_INT32 * p_tile_y1,
					OPJ_UINT32 * p_nb_comps,
					bool * p_should_go_on,
					opj_stream_t * p_stream)
{
	if
		(p_codec && p_stream && p_data_size && p_tile_index) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) p_stream;
		if
			(! l_info->is_decompressor)
		{
			return false;
		}
		return l_info->m_codec_data.m_decompression.opj_read_tile_header(
			l_info->m_codec,
			p_tile_index,
			p_data_size,
			p_tile_x0,
			p_tile_y0,
			p_tile_x1,
			p_tile_y1,
			p_nb_comps,
			p_should_go_on,
			l_cio,&(l_info->m_event_mgr));
	}
	return false;
}

/**
 * Reads a tile data. This function is compulsory and allows one to decode tile data. opj_read_tile_header should be called before.
 * The user may need to refer to the image got by opj_read_header to understand the size being taken by the tile.
 *
 * @param	p_codec			the jpeg2000 codec.
 * @param	p_tile_index	the index of the tile being decoded, this should be the value set by opj_read_tile_header.
 * @param	p_data			pointer to a memory block that will hold the decoded data.
 * @param	p_data_size		size of p_data. p_data_size should be bigger or equal to the value set by opj_read_tile_header.
 * @param	p_stream		the stream to decode.
 *
 * @return	true			if the data could be decoded.
 */				
bool OPJ_CALLCONV opj_decode_tile_data(
					opj_codec_t *p_codec,
					OPJ_UINT32 p_tile_index,
					OPJ_BYTE * p_data,
					OPJ_UINT32 p_data_size,
					opj_stream_t *p_stream
					)
{
	if
		(p_codec && p_data && p_stream) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) p_stream;
		if
			(! l_info->is_decompressor)
		{
			return false;
		}
		return l_info->m_codec_data.m_decompression.opj_decode_tile_data(l_info->m_codec,p_tile_index,p_data,p_data_size,l_cio,&(l_info->m_event_mgr));
	}
	return false;
}

bool OPJ_CALLCONV opj_read_header (
								   opj_codec_t *p_codec,
								   opj_image_t ** p_image,
								   OPJ_INT32 * p_tile_x0,
								   OPJ_INT32 * p_tile_y0,
								   OPJ_UINT32 * p_tile_width,
								   OPJ_UINT32 * p_tile_height,
								   OPJ_UINT32 * p_nb_tiles_x,
								   OPJ_UINT32 * p_nb_tiles_y,
								   opj_stream_t *p_cio)
{
	if
		(p_codec && p_cio) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) p_cio;
		if
			(! l_info->is_decompressor)
		{
			return false;
		}
		return l_info->m_codec_data.m_decompression.opj_read_header(
			l_info->m_codec,
			p_image,
			p_tile_x0,
			p_tile_y0,
			p_tile_width,
			p_tile_height,
			p_nb_tiles_x,
			p_nb_tiles_y,
			l_cio,
			&(l_info->m_event_mgr));
	}
	return false;
}

/**
 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
 * 
 * @param	p_codec			the jpeg2000 codec.
 * @param	p_start_x		the left position of the rectangle to decode (in image coordinates).
 * @param	p_end_x			the right position of the rectangle to decode (in image coordinates).
 * @param	p_start_y		the up position of the rectangle to decode (in image coordinates).
 * @param	p_end_y			the bottom position of the rectangle to decode (in image coordinates).
 *
 * @return	true			if the area could be set.
 */				
bool OPJ_CALLCONV opj_set_decode_area(
					opj_codec_t *p_codec,
					OPJ_INT32 p_start_x,
					OPJ_INT32 p_start_y,
					OPJ_INT32 p_end_x,
					OPJ_INT32 p_end_y
					)
{
	if
		(p_codec) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
		if
			(! l_info->is_decompressor)
		{
			return false;
		}
		return  l_info->m_codec_data.m_decompression.opj_set_decode_area(
				l_info->m_codec,
				p_start_x,
				p_start_y,
				p_end_x,
				p_end_y,
				&(l_info->m_event_mgr));

	}
	return false;

}

bool OPJ_CALLCONV opj_end_decompress (opj_codec_t *p_codec,opj_stream_t *p_cio)
{
	if
		(p_codec && p_cio) 
	{
		opj_codec_private_t * l_info = (opj_codec_private_t *) p_codec;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) p_cio;
		if
			(! l_info->is_decompressor)
		{
			return false;
		}
		return l_info->m_codec_data.m_decompression.opj_end_decompress(l_info->m_codec,l_cio,&(l_info->m_event_mgr));
	}
	return false;
}


opj_codec_t* OPJ_CALLCONV opj_create_compress(OPJ_CODEC_FORMAT p_format) 
{
	opj_codec_private_t *l_info = 00;
	
	l_info = (opj_codec_private_t*)opj_calloc(1, sizeof(opj_codec_private_t));
	if
		(!l_info) 
	{
		return 00;
	}
	memset(l_info, 0, sizeof(opj_codec_private_t));
	l_info->is_decompressor = 0;
	switch
		(p_format) 
	{
		case CODEC_J2K:
			l_info->m_codec_data.m_compression.opj_encode = (bool (*) (void *, struct opj_stream_private *, struct opj_event_mgr * )) j2k_encode;
			l_info->m_codec_data.m_compression.opj_end_compress = (bool (*) (void *, struct opj_stream_private *, struct opj_event_mgr *)) j2k_end_compress;
			l_info->m_codec_data.m_compression.opj_start_compress = (bool (*) (void *,struct opj_stream_private *,struct opj_image * ,	struct opj_event_mgr *)) j2k_start_compress;
			l_info->m_codec_data.m_compression.opj_write_tile = (bool (*) (void *,OPJ_UINT32,OPJ_BYTE*,OPJ_UINT32,struct opj_stream_private *,	struct opj_event_mgr *)) j2k_write_tile;
			l_info->m_codec_data.m_compression.opj_destroy = (void (*) (void *)) j2k_destroy;
			l_info->m_codec_data.m_compression.opj_setup_encoder = (void (*) (void *,opj_cparameters_t *,struct opj_image *, struct opj_event_mgr * )) j2k_setup_encoder;

			l_info->m_codec = j2k_create_compress();
			if
				(! l_info->m_codec)
			{
				opj_free(l_info);
				return 00;
			}
			break;
		
		case CODEC_JP2:
			/* get a JP2 decoder handle */
			l_info->m_codec_data.m_compression.opj_encode = (bool (*) (void *, struct opj_stream_private *, struct opj_event_mgr * )) opj_jp2_encode;
			l_info->m_codec_data.m_compression.opj_end_compress = (bool (*) (void *, struct opj_stream_private *, struct opj_event_mgr *)) jp2_end_compress;
			l_info->m_codec_data.m_compression.opj_start_compress = (bool (*) (void *,struct opj_stream_private *,struct opj_image * ,	struct opj_event_mgr *))  jp2_start_compress;
			l_info->m_codec_data.m_compression.opj_write_tile = (bool (*) (void *,OPJ_UINT32,OPJ_BYTE*,OPJ_UINT32,struct opj_stream_private *,	struct opj_event_mgr *)) jp2_write_tile;
			l_info->m_codec_data.m_compression.opj_destroy = (void (*) (void *)) jp2_destroy;
			l_info->m_codec_data.m_compression.opj_setup_encoder = (void (*) (void *,opj_cparameters_t *,struct opj_image *, struct opj_event_mgr * )) jp2_setup_encoder;
			
			l_info->m_codec = jp2_create(false);
			if
				(! l_info->m_codec)
			{
				opj_free(l_info);
				return 00;
			}
			break;
		case CODEC_UNKNOWN:
		case CODEC_JPT:
		default:
			opj_free(l_info);
			return 00;
	}
	set_default_event_handler(&(l_info->m_event_mgr));
	return (opj_codec_t*) l_info;
}

void OPJ_CALLCONV opj_set_default_encoder_parameters(opj_cparameters_t *parameters) {
	if(parameters) {
		memset(parameters, 0, sizeof(opj_cparameters_t));
		/* default coding parameters */
		parameters->cp_cinema = OFF; 
		parameters->max_comp_size = 0;
		parameters->numresolution = 6;
		parameters->cp_rsiz = STD_RSIZ;
		parameters->cblockw_init = 64;
		parameters->cblockh_init = 64;
		parameters->prog_order = LRCP;
		parameters->roi_compno = -1;		/* no ROI */
		parameters->subsampling_dx = 1;
		parameters->subsampling_dy = 1;
		parameters->tp_on = 0;
		parameters->decod_format = -1;
		parameters->cod_format = -1;
		parameters->tcp_rates[0] = 0;   
		parameters->tcp_numlayers = 0;
    parameters->cp_disto_alloc = 0;
		parameters->cp_fixed_alloc = 0;
		parameters->cp_fixed_quality = 0;
/* UniPG>> */
#ifdef USE_JPWL
		parameters->jpwl_epc_on = false;
		parameters->jpwl_hprot_MH = -1; /* -1 means unassigned */
		{
			int i;
			for (i = 0; i < JPWL_MAX_NO_TILESPECS; i++) {
				parameters->jpwl_hprot_TPH_tileno[i] = -1; /* unassigned */
				parameters->jpwl_hprot_TPH[i] = 0; /* absent */
			}
		};
		{
			int i;
			for (i = 0; i < JPWL_MAX_NO_PACKSPECS; i++) {
				parameters->jpwl_pprot_tileno[i] = -1; /* unassigned */
				parameters->jpwl_pprot_packno[i] = -1; /* unassigned */
				parameters->jpwl_pprot[i] = 0; /* absent */
			}
		};
		parameters->jpwl_sens_size = 0; /* 0 means no ESD */
		parameters->jpwl_sens_addr = 0; /* 0 means auto */
		parameters->jpwl_sens_range = 0; /* 0 means packet */
		parameters->jpwl_sens_MH = -1; /* -1 means unassigned */
		{
			int i;
			for (i = 0; i < JPWL_MAX_NO_TILESPECS; i++) {
				parameters->jpwl_sens_TPH_tileno[i] = -1; /* unassigned */
				parameters->jpwl_sens_TPH[i] = -1; /* absent */
			}
		};
#endif /* USE_JPWL */
/* <<UniPG */
	}
}

/**
 * Helper function.
 * Sets the stream to be a file stream. The FILE must have been open previously.
 * @param		p_stream	the stream to modify
 * @param		p_file		handler to an already open file.
*/
opj_stream_t* OPJ_CALLCONV opj_stream_create_default_file_stream (FILE * p_file,bool p_is_read_stream)
{
	return opj_stream_create_file_stream(p_file,J2K_STREAM_CHUNK_SIZE,p_is_read_stream);
}

opj_stream_t* OPJ_CALLCONV opj_stream_create_file_stream (FILE * p_file,OPJ_UINT32 p_size,bool p_is_read_stream)
{
	opj_stream_t* l_stream = 00;
	if
		(! p_file)
	{
		return 00;
	}
	l_stream = opj_stream_create(p_size,p_is_read_stream);
	if
		(! l_stream)
	{
		return 00;
	}
	opj_stream_set_user_data(l_stream,p_file);
	opj_stream_set_read_function(l_stream,(opj_stream_read_fn) opj_read_from_file);
	opj_stream_set_write_function(l_stream, (opj_stream_write_fn) opj_write_from_file);
	opj_stream_set_skip_function(l_stream, (opj_stream_skip_fn) opj_skip_from_file);
	opj_stream_set_seek_function(l_stream, (opj_stream_seek_fn) opj_seek_from_file);
	return l_stream;
}


bool OPJ_CALLCONV opj_setup_encoder(opj_codec_t *p_info, opj_cparameters_t *parameters, opj_image_t *image) 
{
	if
		(p_info && parameters && image) 
	{
		opj_codec_private_t * l_codec = ((opj_codec_private_t *) p_info);
		if
			(! l_codec->is_decompressor)
		{
			l_codec->m_codec_data.m_compression.opj_setup_encoder(l_codec->m_codec,parameters,image,&(l_codec->m_event_mgr));
			return true;
		}
	}
	return false;
}

bool OPJ_CALLCONV opj_encode(opj_codec_t *p_info, opj_stream_t *cio) 
{
	if
		(p_info && cio) 
	{
		opj_codec_private_t * l_codec = (opj_codec_private_t *) p_info;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) cio;
		if
			(! l_codec->is_decompressor)
		{
			l_codec->m_codec_data.m_compression.opj_encode(l_codec->m_codec,l_cio,&(l_codec->m_event_mgr));
			return true;
		}
	}
	return false;

}

bool OPJ_CALLCONV opj_start_compress (opj_codec_t *p_codec,opj_image_t * p_image,opj_stream_t *p_cio)
{
	if
		(p_codec && p_cio) 
	{
		opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) p_cio;
		if
			(! l_codec->is_decompressor)
		{
			return l_codec->m_codec_data.m_compression.opj_start_compress(l_codec->m_codec,l_cio,p_image,&(l_codec->m_event_mgr));
		}
	}
	return false;
}

bool OPJ_CALLCONV opj_end_compress (opj_codec_t *p_codec,opj_stream_t *p_cio)
{
	if
		(p_codec && p_cio) 
	{
		opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
		opj_stream_private_t * l_cio = (opj_stream_private_t *) p_cio;
		if
			(! l_codec->is_decompressor)
		{
			return l_codec->m_codec_data.m_compression.opj_end_compress(l_codec->m_codec,l_cio,&(l_codec->m_event_mgr));
		}
	}
	return false;

}

bool OPJ_CALLCONV opj_set_info_handler(opj_codec_t * p_codec, opj_msg_callback p_callback,void * p_user_data)
{
	opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
	if
		(! l_codec)
	{
		return false;
	}
	l_codec->m_event_mgr.info_handler = p_callback;
	l_codec->m_event_mgr.m_info_data = p_user_data;
	return true;
}

bool OPJ_CALLCONV opj_set_warning_handler(opj_codec_t * p_codec, opj_msg_callback p_callback,void * p_user_data)
{
	opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
	if
		(! l_codec)
	{
		return false;
	}
	l_codec->m_event_mgr.warning_handler = p_callback;
	l_codec->m_event_mgr.m_warning_data = p_user_data;
	return true;
}

bool OPJ_CALLCONV opj_set_error_handler(opj_codec_t * p_codec, opj_msg_callback p_callback,void * p_user_data)
{
	opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
	if
		(! l_codec)
	{
		return false;
	}
	l_codec->m_event_mgr.error_handler = p_callback;
	l_codec->m_event_mgr.m_error_data = p_user_data;
	return true;
}

/*bool OPJ_CALLCONV opj_encode_with_info(opj_cinfo_t *cinfo, opj_stream_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info) {
	if(cinfo && cio && image) {
		switch(cinfo->codec_format) {
			case CODEC_J2K:
				return j2k_encode((opj_j2k_t*)cinfo->j2k_handle, (opj_stream_private_t *) cio, image, cstr_info);
			case CODEC_JP2:
				return opj_jp2_encode((opj_jp2_t*)cinfo->jp2_handle, (opj_stream_private_t *) cio, image, cstr_info);
			case CODEC_JPT:
			case CODEC_UNKNOWN:
			default:
				break;
		}
	}
	return false;
}*/

void OPJ_CALLCONV opj_destroy_cstr_info(opj_codestream_info_t *cstr_info) {
	if 
		(cstr_info) 
	{
		int tileno;
		for (tileno = 0; tileno < cstr_info->tw * cstr_info->th; tileno++) {
			opj_tile_info_t *tile_info = &cstr_info->tile[tileno];
			opj_free(tile_info->thresh);
			opj_free(tile_info->packet);
			opj_free(tile_info->tp);
		}
		opj_free(cstr_info->tile);
		opj_free(cstr_info->marker);
	}
}

bool OPJ_CALLCONV opj_set_MCT(opj_cparameters_t *parameters,OPJ_FLOAT32 * pEncodingMatrix,OPJ_INT32 * p_dc_shift,OPJ_UINT32 pNbComp)
{
	OPJ_UINT32 l_matrix_size = pNbComp * pNbComp * sizeof(OPJ_FLOAT32);
	OPJ_UINT32 l_dc_shift_size = pNbComp * sizeof(OPJ_INT32);
	OPJ_UINT32 l_mct_total_size = l_matrix_size + l_dc_shift_size;
	// add MCT capability
	int rsiz = (int)parameters->cp_rsiz | (int)MCT;
	parameters->cp_rsiz = (OPJ_RSIZ_CAPABILITIES)rsiz;
	parameters->irreversible = 1;
	// use array based MCT
	parameters->tcp_mct = 2;
	parameters->mct_data = opj_malloc(l_mct_total_size);
	if
		(! parameters->mct_data)
	{
		return false;
	}
	memcpy(parameters->mct_data,pEncodingMatrix,l_matrix_size);
	memcpy(((OPJ_BYTE *) parameters->mct_data) +  l_matrix_size,p_dc_shift,l_dc_shift_size);
	return true;
}

/**
 * Restricts the decoding to the given image area.
 * 
 * @param	parameters		the parameters to update.
 * @param	p_start_x		the starting x position of the area to decode.
 * @param	p_start_y		the starting y position of the area to decode.
 * @param	p_end_x			the x end position of the area to decode. 
 * @param	p_end_x			the y end position of the area to decode.
 */
OPJ_API bool OPJ_CALLCONV opj_restrict_decoding (opj_dparameters_t *parameters,OPJ_INT32 p_start_x,OPJ_INT32 p_start_y,OPJ_INT32 p_end_x,OPJ_INT32 p_end_y)
{
	parameters->m_use_restrict_decode = 1;
	parameters->m_decode_start_x = p_start_x;
	parameters->m_decode_start_y = p_start_y;
	parameters->m_decode_end_x = p_end_x;
	parameters->m_decode_end_y = p_end_y;
	return true;
}