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openjpeg/libopenjpeg/openjpeg.c

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/*
* Copyright (c) 2005, Herve Drolon, FreeImage Team
* 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 "opj_config.h"
#include "opj_includes.h"
/**
* Decompression handler.
*/
typedef struct opj_decompression
{
/** Main header reading function handler*/
opj_bool (*opj_read_header) ( struct opj_stream_private * cio,
void * p_codec,
opj_image_t **p_image,
struct opj_event_mgr * p_manager);
/** Decoding function */
opj_bool (*opj_decode) ( void * p_codec,
struct opj_stream_private *p_cio,
opj_image_t *p_image,
struct opj_event_mgr * p_manager);
/** FIXME DOC */
opj_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,
opj_bool * p_should_go_on,
struct opj_stream_private *p_cio,
struct opj_event_mgr * p_manager);
/** FIXME DOC */
opj_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);
/** Reading function used after codestream if necessary */
opj_bool (* opj_end_decompress) ( void *p_codec,
struct opj_stream_private *cio,
struct opj_event_mgr * p_manager);
/** Codec destroy function handler*/
void (*opj_destroy) (void * p_codec);
/** Setup decoder function handler */
void (*opj_setup_decoder) (void * p_codec, opj_dparameters_t * p_param);
/** Set decode area function handler */
opj_bool (*opj_set_decode_area) ( void * p_codec,
opj_image_t* p_image,
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);
/** Get tile function */
opj_bool (*opj_get_decoded_tile) ( void *p_codec,
opj_stream_private_t *p_cio,
opj_image_t *p_image,
struct opj_event_mgr * p_manager,
OPJ_UINT32 tile_index);
/** Set the decoded resolution factor */
opj_bool (*opj_set_decoded_resolution_factor) (void * p_codec, OPJ_UINT32 res_factor, struct opj_event_mgr * p_manager);
}opj_decompression_t;
/**
* Compression handler. FIXME DOC
*/
typedef struct opj_compression
{
opj_bool (* opj_start_compress) ( void *p_codec,
struct opj_stream_private *cio,
struct opj_image * p_image,
struct opj_event_mgr * p_manager);
opj_bool (* opj_encode) ( void * p_codec,
struct opj_stream_private *p_cio,
struct opj_event_mgr * p_manager);
opj_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);
opj_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;
/**
* Main codec handler used for compression or decompression.
*/
typedef struct opj_codec_private
{
/** FIXME DOC */
union
{
opj_decompression_t m_decompression;
opj_compression_t m_compression;
} m_codec_data;
/** FIXME DOC*/
void * m_codec;
/** Event handler */
opj_event_mgr_t m_event_mgr;
/** Flag to indicate if the codec is used to decode or encode*/
opj_bool is_decompressor;
void (*opj_dump_codec) (void * p_codec, OPJ_INT32 info_flag, FILE* output_stream);
opj_codestream_info_v2_t* (*opj_get_codec_info)(void* p_codec);
opj_codestream_index_t* (*opj_get_codec_index)(void* p_codec);
}
opj_codec_private_t;
/* ---------------------------------------------------------------------- */
/* Functions to set info_handler */
opj_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 OPJ_FALSE;
}
l_codec->m_event_mgr.info_handler = p_callback;
l_codec->m_event_mgr.m_info_data = p_user_data;
return OPJ_TRUE;
}
opj_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 OPJ_FALSE;
}
l_codec->m_event_mgr.warning_handler = p_callback;
l_codec->m_event_mgr.m_warning_data = p_user_data;
return OPJ_TRUE;
}
opj_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 OPJ_FALSE;
}
l_codec->m_event_mgr.error_handler = p_callback;
l_codec->m_event_mgr.m_error_data = p_user_data;
return OPJ_TRUE;
}
/* ---------------------------------------------------------------------- */
OPJ_SIZE_T opj_read_from_file (void * p_buffer, OPJ_SIZE_T p_nb_bytes, FILE * p_file)
{
OPJ_SIZE_T l_nb_read = fread(p_buffer,1,p_nb_bytes,p_file);
return l_nb_read ? l_nb_read : -1;
}
OPJ_UINT64 opj_get_data_length_from_file (FILE * p_file)
{
OPJ_OFF_T file_length = 0;
OPJ_FSEEK(p_file, 0, SEEK_END);
file_length = (OPJ_UINT64)OPJ_FTELL(p_file);
OPJ_FSEEK(p_file, 0, SEEK_SET);
return file_length;
}
OPJ_SIZE_T opj_write_from_file (void * p_buffer, OPJ_SIZE_T p_nb_bytes, FILE * p_file)
{
return fwrite(p_buffer,1,p_nb_bytes,p_file);
}
OPJ_OFF_T opj_skip_from_file (OPJ_OFF_T p_nb_bytes, FILE * p_user_data)
{
if (OPJ_FSEEK(p_user_data,p_nb_bytes,SEEK_CUR)) {
return -1;
}
return p_nb_bytes;
}
opj_bool opj_seek_from_file (OPJ_OFF_T p_nb_bytes, FILE * p_user_data)
{
if (OPJ_FSEEK(p_user_data,p_nb_bytes,SEEK_SET)) {
return OPJ_FALSE;
}
return OPJ_TRUE;
}
/* ---------------------------------------------------------------------- */
#ifdef _WIN32
#ifndef OPJ_STATIC
BOOL APIENTRY
DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
OPJ_ARG_NOT_USED(lpReserved);
OPJ_ARG_NOT_USED(hModule);
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 PACKAGE_VERSION;
}
/* ---------------------------------------------------------------------- */
/* DECOMPRESSION FUNCTIONS*/
opj_codec_t* OPJ_CALLCONV opj_create_decompress(OPJ_CODEC_FORMAT p_format)
{
opj_codec_private_t *l_codec = 00;
l_codec = (opj_codec_private_t*) opj_calloc(1, sizeof(opj_codec_private_t));
if (!l_codec){
return 00;
}
memset(l_codec, 0, sizeof(opj_codec_private_t));
l_codec->is_decompressor = 1;
switch (p_format) {
case CODEC_J2K:
l_codec->opj_dump_codec = (void (*) (void*, OPJ_INT32, FILE*)) j2k_dump;
l_codec->opj_get_codec_info = (opj_codestream_info_v2_t* (*) (void*) ) j2k_get_cstr_info;
l_codec->opj_get_codec_index = (opj_codestream_index_t* (*) (void*) ) j2k_get_cstr_index;
l_codec->m_codec_data.m_decompression.opj_decode =
(opj_bool (*) ( void *,
struct opj_stream_private *,
opj_image_t*, struct opj_event_mgr * )) j2k_decode_v2;
l_codec->m_codec_data.m_decompression.opj_end_decompress =
(opj_bool (*) ( void *,
struct opj_stream_private *,
struct opj_event_mgr *)) j2k_end_decompress;
l_codec->m_codec_data.m_decompression.opj_read_header =
(opj_bool (*) ( struct opj_stream_private *,
void *,
opj_image_t **,
struct opj_event_mgr * )) j2k_read_header;
l_codec->m_codec_data.m_decompression.opj_destroy =
(void (*) (void *))j2k_destroy;
l_codec->m_codec_data.m_decompression.opj_setup_decoder =
(void (*) (void * , opj_dparameters_t * )) j2k_setup_decoder_v2;
l_codec->m_codec_data.m_decompression.opj_read_tile_header =
(opj_bool (*) ( void *,
OPJ_UINT32*,
OPJ_UINT32*,
OPJ_INT32*, OPJ_INT32*,
OPJ_INT32*, OPJ_INT32*,
OPJ_UINT32*,
opj_bool*,
struct opj_stream_private *,
struct opj_event_mgr * )) j2k_read_tile_header;
l_codec->m_codec_data.m_decompression.opj_decode_tile_data =
(opj_bool (*) (void *, OPJ_UINT32, OPJ_BYTE*, OPJ_UINT32, struct opj_stream_private *, struct opj_event_mgr *)) j2k_decode_tile;
l_codec->m_codec_data.m_decompression.opj_set_decode_area =
(opj_bool (*) (void *, opj_image_t*, OPJ_INT32, OPJ_INT32, OPJ_INT32, OPJ_INT32, struct opj_event_mgr *)) j2k_set_decode_area;
l_codec->m_codec_data.m_decompression.opj_get_decoded_tile = (opj_bool (*) (void *p_codec,
opj_stream_private_t *p_cio,
opj_image_t *p_image,
struct opj_event_mgr * p_manager,
OPJ_UINT32 tile_index)) j2k_get_tile;
l_codec->m_codec_data.m_decompression.opj_set_decoded_resolution_factor = (opj_bool (*) (void * p_codec,
OPJ_UINT32 res_factor,
struct opj_event_mgr * p_manager)) j2k_set_decoded_resolution_factor;
l_codec->m_codec = j2k_create_decompress_v2();
if (! l_codec->m_codec) {
opj_free(l_codec);
return NULL;
}
break;
case CODEC_JP2:
/* get a JP2 decoder handle */
l_codec->opj_dump_codec = (void (*) (void*, OPJ_INT32, FILE*)) jp2_dump;
l_codec->opj_get_codec_info = (opj_codestream_info_v2_t* (*) (void*) ) jp2_get_cstr_info;
l_codec->opj_get_codec_index = (opj_codestream_index_t* (*) (void*) ) jp2_get_cstr_index;
l_codec->m_codec_data.m_decompression.opj_decode =
(opj_bool (*) ( void *,
struct opj_stream_private *,
opj_image_t*,
struct opj_event_mgr * )) jp2_decode_v2;
l_codec->m_codec_data.m_decompression.opj_end_decompress = (opj_bool (*) (void *,struct opj_stream_private *,struct opj_event_mgr *)) jp2_end_decompress;
l_codec->m_codec_data.m_decompression.opj_read_header = (opj_bool (*) (
struct opj_stream_private *,
void *,
opj_image_t **,
struct opj_event_mgr * )) jp2_read_header;
l_codec->m_codec_data.m_decompression.opj_read_tile_header = ( opj_bool (*) (
void *,
OPJ_UINT32*,
OPJ_UINT32*,
OPJ_INT32*,
OPJ_INT32*,
OPJ_INT32 * ,
OPJ_INT32 * ,
OPJ_UINT32 * ,
opj_bool *,
struct opj_stream_private *,
struct opj_event_mgr * )) jp2_read_tile_header;
l_codec->m_codec_data.m_decompression.opj_decode_tile_data = (opj_bool (*) (void *,OPJ_UINT32,OPJ_BYTE*,OPJ_UINT32,struct opj_stream_private *, struct opj_event_mgr * )) jp2_decode_tile;
l_codec->m_codec_data.m_decompression.opj_destroy = (void (*) (void *))jp2_destroy;
l_codec->m_codec_data.m_decompression.opj_setup_decoder = (void (*) (void * ,opj_dparameters_t * )) jp2_setup_decoder_v2;
l_codec->m_codec_data.m_decompression.opj_set_decode_area = (opj_bool (*) (void *,opj_image_t*, OPJ_INT32,OPJ_INT32,OPJ_INT32,OPJ_INT32, struct opj_event_mgr * )) jp2_set_decode_area;
l_codec->m_codec_data.m_decompression.opj_get_decoded_tile = (opj_bool (*) (void *p_codec,
opj_stream_private_t *p_cio,
opj_image_t *p_image,
struct opj_event_mgr * p_manager,
OPJ_UINT32 tile_index)) jp2_get_tile;
l_codec->m_codec_data.m_decompression.opj_set_decoded_resolution_factor = (opj_bool (*) (void * p_codec,
OPJ_UINT32 res_factor,
opj_event_mgr_t * p_manager)) jp2_set_decoded_resolution_factor;
l_codec->m_codec = jp2_create(OPJ_TRUE);
if (! l_codec->m_codec) {
opj_free(l_codec);
return 00;
}
break;
case CODEC_UNKNOWN:
case CODEC_JPT:
default:
opj_free(l_codec);
return 00;
}
opj_set_default_event_handler(&(l_codec->m_event_mgr));
return (opj_codec_t*) l_codec;
}
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->cp_limit_decoding = NO_LIMITATION;
parameters->decod_format = -1;
parameters->cod_format = -1;
parameters->flags = 0;
/* UniPG>> */
#ifdef USE_JPWL
parameters->jpwl_correct = OPJ_FALSE;
parameters->jpwl_exp_comps = JPWL_EXPECTED_COMPONENTS;
parameters->jpwl_max_tiles = JPWL_MAXIMUM_TILES;
#endif /* USE_JPWL */
/* <<UniPG */
}
}
opj_bool OPJ_CALLCONV opj_setup_decoder(opj_codec_t *p_codec,
opj_dparameters_t *parameters
)
{
if (p_codec && parameters) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
if (! l_codec->is_decompressor) {
opj_event_msg_v2(&(l_codec->m_event_mgr), EVT_ERROR, "Codec provided to the opj_setup_decoder function is not a decompressor handler.\n");
return OPJ_FALSE;
}
l_codec->m_codec_data.m_decompression.opj_setup_decoder(l_codec->m_codec,
parameters);
return OPJ_TRUE;
}
return OPJ_FALSE;
}
opj_bool OPJ_CALLCONV opj_read_header ( opj_stream_t *p_stream,
opj_codec_t *p_codec,
opj_image_t **p_image )
{
if (p_codec && p_stream) {
opj_codec_private_t* l_codec = (opj_codec_private_t*) p_codec;
opj_stream_private_t* l_stream = (opj_stream_private_t*) p_stream;
if(! l_codec->is_decompressor) {
opj_event_msg_v2(&(l_codec->m_event_mgr), EVT_ERROR, "Codec provided to the opj_read_header function is not a decompressor handler.\n");
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_decompression.opj_read_header( l_stream,
l_codec->m_codec,
p_image,
&(l_codec->m_event_mgr) );
}
return OPJ_FALSE;
}
/*
*
*
*/
opj_bool OPJ_CALLCONV opj_decode( opj_codec_t *p_codec,
opj_stream_t *p_stream,
opj_image_t* p_image)
{
if (p_codec && p_stream) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_decompression.opj_decode(l_codec->m_codec,
l_stream,
p_image,
&(l_codec->m_event_mgr) );
}
return OPJ_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.
*/
opj_bool OPJ_CALLCONV opj_set_decode_area( opj_codec_t *p_codec,
opj_image_t* p_image,
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_codec = (opj_codec_private_t *) p_codec;
if (! l_codec->is_decompressor) {
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_decompression.opj_set_decode_area( l_codec->m_codec,
p_image,
p_start_x, p_start_y,
p_end_x, p_end_y,
&(l_codec->m_event_mgr) );
}
return OPJ_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.
*/
opj_bool OPJ_CALLCONV opj_read_tile_header( opj_codec_t *p_codec,
opj_stream_t * p_stream,
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,
opj_bool * p_should_go_on)
{
if (p_codec && p_stream && p_data_size && p_tile_index) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_decompression.opj_read_tile_header( l_codec->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_stream,
&(l_codec->m_event_mgr));
}
return OPJ_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.
*/
opj_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_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_decompression.opj_decode_tile_data( l_codec->m_codec,
p_tile_index,
p_data,
p_data_size,
l_stream,
&(l_codec->m_event_mgr) );
}
return OPJ_FALSE;
}
/*
*
*
*/
opj_bool OPJ_CALLCONV opj_get_decoded_tile( opj_codec_t *p_codec,
opj_stream_t *p_stream,
opj_image_t *p_image,
OPJ_UINT32 tile_index)
{
if (p_codec && p_stream) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_decompression.opj_get_decoded_tile( l_codec->m_codec,
l_stream,
p_image,
&(l_codec->m_event_mgr),
tile_index);
}
return OPJ_FALSE;
}
/*
*
*
*/
opj_bool OPJ_CALLCONV opj_set_decoded_resolution_factor(opj_codec_t *p_codec,
OPJ_UINT32 res_factor )
{
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
if ( !l_codec ){
fprintf(stderr, "[ERROR] Input parameters of the setup_decoder function are incorrect.\n");
return OPJ_FALSE;
}
l_codec->m_codec_data.m_decompression.opj_set_decoded_resolution_factor(l_codec->m_codec,
res_factor,
&(l_codec->m_event_mgr) );
return OPJ_TRUE;
}
/* ---------------------------------------------------------------------- */
/* COMPRESSION FUNCTIONS*/
opj_codec_t* OPJ_CALLCONV opj_create_compress(OPJ_CODEC_FORMAT p_format)
{
opj_codec_private_t *l_codec = 00;
l_codec = (opj_codec_private_t*)opj_calloc(1, sizeof(opj_codec_private_t));
if (!l_codec) {
return 00;
}
memset(l_codec, 0, sizeof(opj_codec_private_t));
l_codec->is_decompressor = 0;
switch(p_format) {
case CODEC_J2K:
l_codec->m_codec_data.m_compression.opj_encode = (opj_bool (*) (void *,
struct opj_stream_private *,
struct opj_event_mgr * )) j2k_encode_v2;
l_codec->m_codec_data.m_compression.opj_end_compress = (opj_bool (*) ( void *,
struct opj_stream_private *,
struct opj_event_mgr *)) j2k_end_compress;
l_codec->m_codec_data.m_compression.opj_start_compress = (opj_bool (*) (void *,
struct opj_stream_private *,
struct opj_image * ,
struct opj_event_mgr *)) j2k_start_compress;
l_codec->m_codec_data.m_compression.opj_write_tile = (opj_bool (*) (void *,
OPJ_UINT32,
OPJ_BYTE*,
OPJ_UINT32,
struct opj_stream_private *,
struct opj_event_mgr *) ) j2k_write_tile;
l_codec->m_codec_data.m_compression.opj_destroy = (void (*) (void *)) j2k_destroy;
l_codec->m_codec_data.m_compression.opj_setup_encoder = (void (*) ( void *,
opj_cparameters_t *,
struct opj_image *,
struct opj_event_mgr * )) j2k_setup_encoder_v2;
l_codec->m_codec = j2k_create_compress_v2();
if (! l_codec->m_codec) {
opj_free(l_codec);
return 00;
}
break;
case CODEC_JP2:
/* get a JP2 decoder handle */
l_codec->m_codec_data.m_compression.opj_encode = (opj_bool (*) (void *,
struct opj_stream_private *,
struct opj_event_mgr * )) opj_jp2_encode_v2;
l_codec->m_codec_data.m_compression.opj_end_compress = (opj_bool (*) ( void *,
struct opj_stream_private *,
struct opj_event_mgr *)) jp2_end_compress;
l_codec->m_codec_data.m_compression.opj_start_compress = (opj_bool (*) (void *,
struct opj_stream_private *,
struct opj_image * ,
struct opj_event_mgr *)) jp2_start_compress;
l_codec->m_codec_data.m_compression.opj_write_tile = (opj_bool (*) (void *,
OPJ_UINT32,
OPJ_BYTE*,
OPJ_UINT32,
struct opj_stream_private *,
struct opj_event_mgr *)) jp2_write_tile;
l_codec->m_codec_data.m_compression.opj_destroy = (void (*) (void *)) jp2_destroy;
l_codec->m_codec_data.m_compression.opj_setup_encoder = (void (*) ( void *,
opj_cparameters_t *,
struct opj_image *,
struct opj_event_mgr * )) jp2_setup_encoder;
l_codec->m_codec = jp2_create(OPJ_FALSE);
if (! l_codec->m_codec) {
opj_free(l_codec);
return 00;
}
break;
case CODEC_UNKNOWN:
case CODEC_JPT:
default:
opj_free(l_codec);
return 00;
}
opj_set_default_event_handler(&(l_codec->m_event_mgr));
return (opj_codec_t*) l_codec;
}
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;
parameters->jpip_on = OPJ_FALSE;
/* UniPG>> */
#ifdef USE_JPWL
parameters->jpwl_epc_on = OPJ_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 */
}
}
opj_bool OPJ_CALLCONV opj_setup_encoder(opj_codec_t *p_codec,
opj_cparameters_t *parameters,
opj_image_t *p_image)
{
if (p_codec && parameters && p_image) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
if (! l_codec->is_decompressor) {
l_codec->m_codec_data.m_compression.opj_setup_encoder( l_codec->m_codec,
parameters,
p_image,
&(l_codec->m_event_mgr) );
return OPJ_TRUE;
}
}
return OPJ_FALSE;
}
opj_bool OPJ_CALLCONV opj_start_compress ( opj_codec_t *p_codec,
opj_image_t * p_image,
opj_stream_t *p_stream)
{
if (p_codec && p_stream) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
return l_codec->m_codec_data.m_compression.opj_start_compress( l_codec->m_codec,
l_stream,
p_image,
&(l_codec->m_event_mgr));
}
}
return OPJ_FALSE;
}
opj_bool OPJ_CALLCONV opj_encode(opj_codec_t *p_info, opj_stream_t *p_stream)
{
if (p_info && p_stream) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_info;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
l_codec->m_codec_data.m_compression.opj_encode( l_codec->m_codec,
l_stream,
&(l_codec->m_event_mgr));
return OPJ_TRUE;
}
}
return OPJ_FALSE;
}
opj_bool OPJ_CALLCONV opj_end_compress (opj_codec_t *p_codec,
opj_stream_t *p_stream)
{
if (p_codec && p_stream) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
return l_codec->m_codec_data.m_compression.opj_end_compress(l_codec->m_codec,
l_stream,
&(l_codec->m_event_mgr));
}
}
return OPJ_FALSE;
}
/*
*
*
*/
opj_bool OPJ_CALLCONV opj_end_decompress ( opj_codec_t *p_codec,
opj_stream_t *p_stream)
{
if (p_codec && p_stream) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (! l_codec->is_decompressor) {
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_decompression.opj_end_decompress(l_codec->m_codec,
l_stream,
&(l_codec->m_event_mgr) );
}
return OPJ_FALSE;
}
opj_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 OPJ_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 OPJ_TRUE;
}
/**
* 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.
*/
opj_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_codec = (opj_codec_private_t *) p_codec;
opj_stream_private_t * l_stream = (opj_stream_private_t *) p_stream;
if (l_codec->is_decompressor) {
return OPJ_FALSE;
}
return l_codec->m_codec_data.m_compression.opj_write_tile( l_codec->m_codec,
p_tile_index,
p_data,
p_data_size,
l_stream,
&(l_codec->m_event_mgr) );
}
return OPJ_FALSE;
}
/* ---------------------------------------------------------------------- */
void OPJ_CALLCONV opj_destroy_codec(opj_codec_t *p_codec)
{
if (p_codec) {
opj_codec_private_t * l_codec = (opj_codec_private_t *) p_codec;
if (l_codec->is_decompressor) {
l_codec->m_codec_data.m_decompression.opj_destroy(l_codec->m_codec);
}
else {
l_codec->m_codec_data.m_compression.opj_destroy(l_codec->m_codec);
}
l_codec->m_codec = 00;
opj_free(l_codec);
}
}
/* ---------------------------------------------------------------------- */
/*
*
*
*/
void OPJ_CALLCONV opj_dump_codec( opj_codec_t *p_codec,
OPJ_INT32 info_flag,
FILE* output_stream)
{
if (p_codec) {
opj_codec_private_t* l_codec = (opj_codec_private_t*) p_codec;
l_codec->opj_dump_codec(l_codec->m_codec, info_flag, output_stream);
return;
}
fprintf(stderr, "[ERROR] Input parameter of the dump_codec function are incorrect.\n");
return;
}
/*
*
*
*/
opj_codestream_info_v2_t* OPJ_CALLCONV opj_get_cstr_info(opj_codec_t *p_codec)
{
if (p_codec) {
opj_codec_private_t* l_codec = (opj_codec_private_t*) p_codec;
return l_codec->opj_get_codec_info(l_codec->m_codec);
}
return NULL;
}
/*
*
*
*/
void OPJ_CALLCONV opj_destroy_cstr_info(opj_codestream_info_v2_t **cstr_info) {
if (cstr_info) {
if ((*cstr_info)->m_default_tile_info.tccp_info){
opj_free((*cstr_info)->m_default_tile_info.tccp_info);
}
if ((*cstr_info)->tile_info){
/* FIXME not used for the moment*/
}
opj_free((*cstr_info));
(*cstr_info) = NULL;
}
}
/*
*
*
*/
opj_codestream_index_t * OPJ_CALLCONV opj_get_cstr_index(opj_codec_t *p_codec)
{
if (p_codec) {
opj_codec_private_t* l_codec = (opj_codec_private_t*) p_codec;
return l_codec->opj_get_codec_index(l_codec->m_codec);
}
return NULL;
}
/*
*
*
*/
void OPJ_CALLCONV opj_destroy_cstr_index(opj_codestream_index_t **p_cstr_index)
{
if (*p_cstr_index){
j2k_destroy_cstr_index(*p_cstr_index);
(*p_cstr_index) = NULL;
}
}
/* ---------------------------------------------------------------------- */
/**
* 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, opj_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_SIZE_T p_size,
opj_bool p_is_read_stream)
{
opj_stream_t* l_stream = 00;
if (! p_file) {
return NULL;
}
l_stream = opj_stream_create(p_size,p_is_read_stream);
if (! l_stream) {
return NULL;
}
opj_stream_set_user_data(l_stream, p_file);
opj_stream_set_user_data_length(l_stream, opj_get_data_length_from_file(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;
}
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