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/*
* $Id$
*
* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2011, Professor Benoit Macq
* Copyright (c) 2010-2011, Kaori Hagihara
* 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 <assert.h>
#include <limits.h>
#include "jp2k_decoder.h"
#include "openjpeg.h"
static void error_callback(const char *msg, void *client_data);
static void warning_callback(const char *msg, void *client_data);
static void info_callback(const char *msg, void *client_data);
static Byte_t * imagetopnm(opj_image_t *image, ihdrbox_param_t **ihdrbox);
Byte_t * j2k_to_pnm( FILE *fp, ihdrbox_param_t **ihdrbox)
{
Byte_t *pnmstream = NULL;
opj_dparameters_t parameters; /* decompression parameters */
opj_image_t *image = NULL;
opj_codec_t *l_codec = NULL; /* handle to a decompressor */
opj_stream_t *l_stream = NULL;
/* set decoding parameters to default values */
opj_set_default_decoder_parameters(¶meters);
/* set a byte stream */
l_stream = opj_stream_create_default_file_stream( fp, 1);
if (!l_stream){
fprintf(stderr, "ERROR -> failed to create the stream from the file\n");
return NULL;
}
/* decode the code-stream */
/* ---------------------- */
/* JPEG-2000 codestream */
/* get a decoder handle */
l_codec = opj_create_decompress(OPJ_CODEC_J2K);
/* catch events using our callbacks and give a local context */
opj_set_info_handler(l_codec, info_callback,00);
opj_set_warning_handler(l_codec, warning_callback,00);
opj_set_error_handler(l_codec, error_callback,00);
/* setup the decoder decoding parameters using user parameters */
if ( !opj_setup_decoder(l_codec, ¶meters) ){
fprintf(stderr, "ERROR -> j2k_dump: failed to setup the decoder\n");
return NULL;
}
/* Read the main header of the codestream and if necessary the JP2 boxes*/
if(! opj_read_header( l_stream, l_codec, &image)){
fprintf(stderr, "ERROR -> j2k_to_image: failed to read the header\n");
opj_stream_destroy(l_stream);
opj_destroy_codec(l_codec);
opj_image_destroy(image);
return NULL;
}
#ifdef TODO /*decode area could be set from j2k_to_pnm call, modify the protocol between JPIP viewer and opj_dec_server*/
if (! opj_set_decode_area( l_codec, image, parameters.DA_x0, parameters.DA_y0, parameters.DA_x1, parameters.DA_y1)){
fprintf(stderr, "ERROR -> j2k_to_image: failed to set the decoded area\n");
opj_stream_destroy(l_stream);
opj_destroy_codec(l_codec);
opj_image_destroy(image);
return NULL;
}
#endif /*TODO*/
/* Get the decoded image */
if ( !( opj_decode(l_codec, l_stream, image) && opj_end_decompress(l_codec,l_stream) ) ) {
fprintf(stderr, "ERROR -> j2k_to_image: failed to decode image!\n");
opj_stream_destroy(l_stream);
opj_destroy_codec(l_codec);
opj_image_destroy(image);
return NULL;
}
fprintf(stderr, "image is decoded!\n");
/* close the byte stream */
opj_stream_destroy(l_stream);
/* create output image */
/* ------------------- */
if( (pnmstream = imagetopnm( image, ihdrbox))==NULL)
fprintf( stderr, "PNM image not generated\n");
/* free remaining structures */
if(l_codec) {
opj_destroy_codec(l_codec);
}
/* free image data structure */
opj_image_destroy(image);
return pnmstream;
}
/**
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;
(void)msg;
/* fprintf(stdout, "[INFO] %s", msg); */
}
static Byte_t * imagetopnm(opj_image_t *image, ihdrbox_param_t **ihdrbox)
{
OPJ_UINT32 adjustR, adjustG=0, adjustB=0;
OPJ_SIZE_T datasize;
Byte_t *pix=NULL, *ptr=NULL;
OPJ_UINT32 i;
if(*ihdrbox){
if( (*ihdrbox)->nc != image->numcomps)
fprintf( stderr, "Exception: num of components not identical, codestream: %d, ihdrbox: %d\n", image->numcomps, (*ihdrbox)->nc);
if( (*ihdrbox)->width != image->comps[0].w)
(*ihdrbox)->width = image->comps[0].w;
if( (*ihdrbox)->height != image->comps[0].h)
(*ihdrbox)->height = image->comps[0].h;
if( (*ihdrbox)->bpc != image->comps[0].prec)
fprintf( stderr, "Exception: bits per component not identical, codestream: %d, ihdrbox: %d\n", image->comps[0].prec, (*ihdrbox)->bpc);
}
else{
*ihdrbox = (ihdrbox_param_t *)malloc( sizeof(ihdrbox_param_t));
(*ihdrbox)->width = image->comps[0].w;
(*ihdrbox)->height = image->comps[0].h;
assert( image->comps[0].prec < 256 );
(*ihdrbox)->bpc = (Byte_t)image->comps[0].prec;
assert( image->numcomps < USHRT_MAX );
(*ihdrbox)->nc = (Byte2_t)image->numcomps;
}
datasize = (image->numcomps)*(image->comps[0].w)*(image->comps[0].h);
if (image->comps[0].prec > 8) {
adjustR = image->comps[0].prec - 8;
printf("PNM CONVERSION: Truncating component 0 from %d bits to 8 bits\n", image->comps[0].prec);
}
else
adjustR = 0;
if( image->numcomps == 3){
if (image->comps[1].prec > 8) {
adjustG = image->comps[1].prec - 8;
printf("PNM CONVERSION: Truncating component 1 from %d bits to 8 bits\n", image->comps[1].prec);
}
else
adjustG = 0;
if (image->comps[2].prec > 8) {
adjustB = image->comps[2].prec - 8;
printf("PNM CONVERSION: Truncating component 2 from %d bits to 8 bits\n", image->comps[2].prec);
}
else
adjustB = 0;
}
pix = (Byte_t *)malloc( datasize);
ptr = pix;
for( i = 0; i < image->comps[0].w * image->comps[0].h; i++){
int r, g, b;
r = image->comps[0].data[i];
r += (image->comps[0].sgnd ? 1 << (image->comps[0].prec - 1) : 0);
/* if( adjustR > 0) */
*(ptr++) = (Byte_t) ((r >> adjustR)+((r >> (adjustR-1))%2));
if( image->numcomps == 3){
g = image->comps[1].data[i];
g += (image->comps[1].sgnd ? 1 << (image->comps[1].prec - 1) : 0);
*(ptr++) = (Byte_t) ((g >> adjustG)+((g >> (adjustG-1))%2));
b = image->comps[2].data[i];
b += (image->comps[2].sgnd ? 1 << (image->comps[2].prec - 1) : 0);
*(ptr++) = (Byte_t) ((b >> adjustB)+((b >> (adjustB-1))%2));
}
}
return pix;
}
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