149 lines
4.8 KiB
C
149 lines
4.8 KiB
C
/*
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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2007, Professor Benoit Macq
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* Copyright (c) 2003-2007, Francois-Olivier Devaux
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "openjpeg.h"
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#include "../libopenjpeg/j2k.h"
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#include "../libopenjpeg/jp2.h"
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#include "mj2.h"
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/* -------------------------------------------------------------------------- */
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/**
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sample error callback expecting a FILE* client object
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*/
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void error_callback(const char *msg, void *client_data) {
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FILE *stream = (FILE*)client_data;
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fprintf(stream, "[ERROR] %s", msg);
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}
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/**
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sample warning callback expecting a FILE* client object
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*/
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void warning_callback(const char *msg, void *client_data) {
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FILE *stream = (FILE*)client_data;
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fprintf(stream, "[WARNING] %s", msg);
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}
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/**
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sample debug callback expecting a FILE* client object
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*/
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void info_callback(const char *msg, void *client_data) {
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FILE *stream = (FILE*)client_data;
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fprintf(stream, "[INFO] %s", msg);
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}
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/* -------------------------------------------------------------------------- */
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int main(int argc, char *argv[]) {
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opj_dinfo_t* dinfo;
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opj_event_mgr_t event_mgr; /* event manager */
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int tnum;
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unsigned int snum;
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opj_mj2_t *movie;
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mj2_tk_t *track;
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mj2_sample_t *sample;
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unsigned char* frame_codestream;
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FILE *file, *outfile;
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char outfilename[50];
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mj2_dparameters_t parameters;
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if (argc != 3) {
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printf("Usage: %s mj2filename output_location\n",argv[0]);
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printf("Example: %s foreman.mj2 output/foreman\n",argv[0]);
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return 1;
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}
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file = fopen(argv[1], "rb");
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if (!file) {
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fprintf(stderr, "failed to open %s for reading\n", argv[1]);
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return 1;
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}
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/*
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configure the event callbacks (not required)
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setting of each callback is optionnal
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*/
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memset(&event_mgr, 0, sizeof(opj_event_mgr_t));
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event_mgr.error_handler = error_callback;
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event_mgr.warning_handler = warning_callback;
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event_mgr.info_handler = info_callback;
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/* get a MJ2 decompressor handle */
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dinfo = mj2_create_decompress();
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/* catch events using our callbacks and give a local context */
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opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
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/* setup the decoder decoding parameters using user parameters */
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movie = (opj_mj2_t*) dinfo->mj2_handle;
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mj2_setup_decoder((opj_mj2_t*)dinfo->mj2_handle, ¶meters);
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if (mj2_read_struct(file, movie)) // Creating the movie structure
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return 1;
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// Decode first video track
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tnum = 0;
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while (movie->tk[tnum].track_type != 0)
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tnum ++;
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track = &movie->tk[tnum];
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fprintf(stdout,"Extracting %d frames from file...\n",track->num_samples);
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for (snum=0; snum < track->num_samples; snum++)
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{
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sample = &track->sample[snum];
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frame_codestream = (unsigned char*) malloc (sample->sample_size-8); // Skipping JP2C marker
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fseek(file,sample->offset+8,SEEK_SET);
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fread(frame_codestream,sample->sample_size-8,1, file); // Assuming that jp and ftyp markers size do
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sprintf(outfilename,"%s_%05d.j2k",argv[2],snum);
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outfile = fopen(outfilename, "wb");
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if (!outfile) {
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fprintf(stderr, "failed to open %s for writing\n",outfilename);
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return 1;
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}
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fwrite(frame_codestream,sample->sample_size-8,1,outfile);
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fclose(outfile);
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free(frame_codestream);
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}
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fclose(file);
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fprintf(stdout, "%d frames correctly extracted\n", snum);
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/* free remaining structures */
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if(dinfo) {
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mj2_destroy_decompress((opj_mj2_t*)dinfo->mj2_handle);
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}
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return 0;
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}
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