root/applications/testapps/bmp4demux/main.c

DEFINITIONS

1. main

/*
 *                      GPAC - Multimedia Framework C SDK
 *
 *                      Authors: Cyril Concolato
 *                      Copyright (c) Telecom ParisTech 2013-
 *                                      All rights reserved
 *
 *  This file is part of GPAC / sample MP4 demultiplexing application
 *
 *  GPAC is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  GPAC is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <gpac/tools.h>
#include <gpac/isomedia.h>

int main(int argc, char **argv)
{
        /* The ISO progressive reader */
        GF_ISOFile *movie;
        /* Error indicator */
        GF_Err e;
        /* Number of bytes required to finish the current ISO Box reading */
        u64 missing_bytes;
        /* Return value for the program */
        int ret = 0;
        u32 track_id = 1;
        u32 track_number;
        u32 sample_count;
        u32 sample_index;

        /* Usage */
        if (argc < 2) {
                fprintf(stdout, "Usage: %s filename [track_id]\n", argv[0]);
                return 1;
        }
        if (argc == 3) {
                track_id = atoi(argv[2]);
        }

        e = gf_isom_open_progressive(argv[1], 0, 0, &movie, &missing_bytes);
        if ((e != GF_OK && e != GF_ISOM_INCOMPLETE_FILE) || movie == NULL) {
                fprintf(stdout, "Could not open file %s for reading (%s).\n", argv[1], gf_error_to_string(e));
                return 1;
        }

        track_number = gf_isom_get_track_by_id(movie, track_id);
        if (track_number == 0) {
                fprintf(stdout, "Could not find track ID=%u of file %s.\n", track_id, argv[1]);
                ret = 1;
                goto exit;
        }

        sample_count = gf_isom_get_sample_count(movie, track_number);
        sample_index = 1;
        while (sample_index <= sample_count) {
                GF_ISOSample *iso_sample;
                u32 sample_description_index;

                iso_sample = gf_isom_get_sample(movie, track_number, sample_index, &sample_description_index);
                if (iso_sample) {
                        fprintf(stdout, "Found sample #%5d/%5d of length %8d, RAP: %d, DTS: "LLD", CTS: "LLD"\n", sample_index, sample_count, iso_sample->dataLength, iso_sample->IsRAP, iso_sample->DTS, iso_sample->DTS+iso_sample->CTS_Offset);
                        sample_index++;

                        /*release the sample data, once you're done with it*/
                        gf_isom_sample_del(&iso_sample);
                } else {
                        e = gf_isom_last_error(movie);
                        if (e == GF_ISOM_INCOMPLETE_FILE) {
                                missing_bytes = gf_isom_get_missing_bytes(movie, track_number);
                                fprintf(stdout, "Missing "LLU" bytes on input file\n", missing_bytes);
                                gf_sleep(1000);
                        }
                }
        }

exit:
        gf_isom_close(movie);

        return ret;
}