openjpeg/applications/mj2/extract_j2k_from_mj2.c

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/*
* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2007, Professor Benoit Macq
* Copyright (c) 2003-2007, Francois-Olivier Devaux
* 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 <stdlib.h>
#include <string.h>
#include "openjpeg.h"
#include "cio.h"
#include "j2k.h"
#include "jp2.h"
#include "mj2.h"
/* -------------------------------------------------------------------------- */
/**
sample error callback expecting a FILE* client object
*/
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
*/
void warning_callback(const char *msg, void *client_data) {
FILE *stream = (FILE*)client_data;
fprintf(stream, "[WARNING] %s", msg);
}
/**
sample debug callback expecting a FILE* client object
*/
void info_callback(const char *msg, void *client_data) {
FILE *stream = (FILE*)client_data;
fprintf(stream, "[INFO] %s", msg);
}
/* -------------------------------------------------------------------------- */
#define JP2_RFC3745_MAGIC "\x00\x00\x00\x0c\x6a\x50\x20\x20\x0d\x0a\x87\x0a"
int main(int argc, char *argv[]) {
opj_dinfo_t* dinfo;
opj_event_mgr_t event_mgr; /* event manager */
int tnum, failed;
unsigned int snum;
opj_mj2_t *movie;
mj2_tk_t *track;
mj2_sample_t *sample;
unsigned char* frame_codestream;
FILE *mj2file, *outfile;
char *outfilename;
mj2_dparameters_t parameters;
if (argc != 3) {
printf("\nUsage: %s mj2filename output_location\n",argv[0]);
printf("Example: %s foreman.mj2 output/foreman\n\n",argv[0]);
return 1;
}
mj2file = fopen(argv[1], "rb");
if (!mj2file) {
fprintf(stderr, "failed to open %s for reading\n", argv[1]);
return 1;
}
{
unsigned char buf[28];
memset(buf, 0, 28);
fread(buf, 1, 24, mj2file);
if(memcmp(buf, JP2_RFC3745_MAGIC, 12) == 0
&& memcmp(buf+20, "\x6d\x6a\x70\x32", 4) == 0)
{
rewind(mj2file);
}
else
{
fclose(mj2file);
fprintf(stderr,"%s:%d: %s\n\tThis file is not an MJ2 file."
"Quitting\n",__FILE__,__LINE__, argv[0]);
return 1;
}
}
/*
configure the event callbacks (not required)
setting of each callback is optionnal
*/
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;
failed = 1;
outfilename = (char*)malloc(strlen(argv[2]) + 32);
if(outfilename == NULL) goto fin;
/* get a MJ2 decompressor handle */
dinfo = mj2_create_decompress();
if(dinfo == NULL) goto fin;
/* 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 */
memset(&parameters, 0, sizeof(mj2_dparameters_t));
movie = (opj_mj2_t*) dinfo->mj2_handle;
mj2_setup_decoder(movie, &parameters);
/* Create the movie structure: */
if (mj2_read_struct(mj2file, movie))
goto fin;
/* Decode first video track : */
tnum = 0;
while (movie->tk[tnum].track_type != 0)
tnum ++;
track = &movie->tk[tnum];
if(track->jp2_struct.enumcs != ENUMCS_SRGB
&& track->jp2_struct.enumcs != ENUMCS_GRAY)
{
fprintf(stderr,"%s:%d: %s\n"
"\tERROR: this MJ2 file does not contain J2K frames.\n"
"\tPlease try mj2_to_frames for this file.\n",
__FILE__,__LINE__, argv[0]);
goto fin;
}
fprintf(stdout,"Extracting %d frames from file...\n",track->num_samples);
for (snum=0; snum < track->num_samples; snum++)
{
sample = &track->sample[snum];
frame_codestream = (unsigned char*)
malloc (sample->sample_size-8); /* Skipping JP2C marker */
fseek(mj2file,sample->offset+8,SEEK_SET);
/* Assuming that jp and ftyp markers size do: */
fread(frame_codestream,sample->sample_size-8,1, mj2file);
sprintf(outfilename,"%s_%05d.j2k",argv[2],snum);
outfile = fopen(outfilename, "wb");
if (!outfile) {
fprintf(stderr, "failed to open %s for writing\n",outfilename);
goto fin;
}
fwrite(frame_codestream,sample->sample_size-8,1,outfile);
fclose(outfile);
free(frame_codestream);
}
fprintf(stdout, "%d frames correctly extracted\n", snum);
failed = 0;
fin:
fclose(mj2file);
free(outfilename);
/* free remaining structures */
if(dinfo)
{
mj2_destroy_decompress(movie);
free(dinfo);
}
return failed;
}/* main() */