0,0 → 1,148 |
/* |
* 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 "../libopenjpeg/j2k.h" |
#include "../libopenjpeg/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); |
} |
|
/* -------------------------------------------------------------------------- */ |
|
|
int main(int argc, char *argv[]) { |
opj_dinfo_t* dinfo; |
opj_event_mgr_t event_mgr; /* event manager */ |
int tnum; |
unsigned int snum; |
opj_mj2_t *movie; |
mj2_tk_t *track; |
mj2_sample_t *sample; |
unsigned char* frame_codestream; |
FILE *file, *outfile; |
char outfilename[50]; |
mj2_dparameters_t parameters; |
|
if (argc != 3) { |
printf("Usage: %s mj2filename output_location\n",argv[0]); |
printf("Example: %s foreman.mj2 output/foreman\n",argv[0]); |
return 1; |
} |
|
file = fopen(argv[1], "rb"); |
|
if (!file) { |
fprintf(stderr, "failed to open %s for reading\n", argv[1]); |
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; |
|
/* get a MJ2 decompressor handle */ |
dinfo = mj2_create_decompress(); |
|
/* 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 */ |
movie = (opj_mj2_t*) dinfo->mj2_handle; |
mj2_setup_decoder((opj_mj2_t*)dinfo->mj2_handle, ¶meters); |
|
if (mj2_read_struct(file, movie)) // Creating the movie structure |
return 1; |
|
// Decode first video track |
tnum = 0; |
while (movie->tk[tnum].track_type != 0) |
tnum ++; |
|
track = &movie->tk[tnum]; |
|
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(file,sample->offset+8,SEEK_SET); |
fread(frame_codestream,sample->sample_size-8,1, file); // Assuming that jp and ftyp markers size do |
|
sprintf(outfilename,"%s_%05d.j2k",argv[2],snum); |
outfile = fopen(outfilename, "wb"); |
if (!outfile) { |
fprintf(stderr, "failed to open %s for writing\n",outfilename); |
return 1; |
} |
fwrite(frame_codestream,sample->sample_size-8,1,outfile); |
fclose(outfile); |
free(frame_codestream); |
} |
fclose(file); |
fprintf(stdout, "%d frames correctly extracted\n", snum); |
|
/* free remaining structures */ |
if(dinfo) { |
mj2_destroy_decompress((opj_mj2_t*)dinfo->mj2_handle); |
} |
|
return 0; |
} |