1/* 2 * D-Cinema audio muxer 3 * Copyright (c) 2005 Reimar D��ffinger 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "avformat.h" 23 24static int daud_write_header(struct AVFormatContext *s) 25{ 26 AVCodecContext *codec = s->streams[0]->codec; 27 if (codec->channels!=6 || codec->sample_rate!=96000) 28 return -1; 29 return 0; 30} 31 32static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt) 33{ 34 if (pkt->size > 65535) { 35 av_log(s, AV_LOG_ERROR, 36 "Packet size too large for s302m. (%d > 65535)\n", pkt->size); 37 return -1; 38 } 39 avio_wb16(s->pb, pkt->size); 40 avio_wb16(s->pb, 0x8010); // unknown 41 avio_write(s->pb, pkt->data, pkt->size); 42 return 0; 43} 44 45AVOutputFormat ff_daud_muxer = { 46 .name = "daud", 47 .long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio"), 48 .extensions = "302", 49 .audio_codec = AV_CODEC_ID_PCM_S24DAUD, 50 .video_codec = AV_CODEC_ID_NONE, 51 .write_header = daud_write_header, 52 .write_packet = daud_write_packet, 53 .flags = AVFMT_NOTIMESTAMPS, 54}; 55