1/* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation; either 7 * version 2.1 of the License, or (at your option) any later version. 8 * 9 * FFmpeg is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public 15 * License along with FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19#include "avformat.h" 20#include "avio.h" 21#include "isom.h" 22 23int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb) 24{ 25 AVStream *st; 26 int tag, ret = 0; 27 28 if (fc->nb_streams < 1) 29 return 0; 30 st = fc->streams[fc->nb_streams-1]; 31 32 avio_rb32(pb); /* version + flags */ 33 ff_mp4_read_descr(fc, pb, &tag); 34 if (tag == MP4ESDescrTag) { 35 ff_mp4_parse_es_descr(pb, NULL); 36 } else 37 avio_rb16(pb); /* ID */ 38 39 ff_mp4_read_descr(fc, pb, &tag); 40 if (tag == MP4DecConfigDescrTag) 41 ret = ff_mp4_read_dec_config_descr(fc, st, pb); 42 43 return ret; 44} 45