1/* 2 * D-Cinema audio demuxer 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#include "avformat.h" 22 23static int daud_header(AVFormatContext *s, AVFormatParameters *ap) { 24 AVStream *st = av_new_stream(s, 0); 25 if (!st) 26 return AVERROR(ENOMEM); 27 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; 28 st->codec->codec_id = CODEC_ID_PCM_S24DAUD; 29 st->codec->codec_tag = MKTAG('d', 'a', 'u', 'd'); 30 st->codec->channels = 6; 31 st->codec->sample_rate = 96000; 32 st->codec->bit_rate = 3 * 6 * 96000 * 8; 33 st->codec->block_align = 3 * 6; 34 st->codec->bits_per_coded_sample = 24; 35 return 0; 36} 37 38static int daud_packet(AVFormatContext *s, AVPacket *pkt) { 39 ByteIOContext *pb = s->pb; 40 int ret, size; 41 if (url_feof(pb)) 42 return AVERROR(EIO); 43 size = get_be16(pb); 44 get_be16(pb); // unknown 45 ret = av_get_packet(pb, pkt, size); 46 pkt->stream_index = 0; 47 return ret; 48} 49 50static int daud_write_header(struct AVFormatContext *s) 51{ 52 AVCodecContext *codec = s->streams[0]->codec; 53 if (codec->channels!=6 || codec->sample_rate!=96000) 54 return -1; 55 return 0; 56} 57 58static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt) 59{ 60 put_be16(s->pb, pkt->size); 61 put_be16(s->pb, 0x8010); // unknown 62 put_buffer(s->pb, pkt->data, pkt->size); 63 put_flush_packet(s->pb); 64 return 0; 65} 66 67#if CONFIG_DAUD_DEMUXER 68AVInputFormat daud_demuxer = { 69 "daud", 70 NULL_IF_CONFIG_SMALL("D-Cinema audio format"), 71 0, 72 NULL, 73 daud_header, 74 daud_packet, 75 NULL, 76 NULL, 77 .extensions = "302", 78}; 79#endif 80 81#if CONFIG_DAUD_MUXER 82AVOutputFormat daud_muxer = 83{ 84 "daud", 85 NULL_IF_CONFIG_SMALL("D-Cinema audio format"), 86 NULL, 87 "302", 88 0, 89 CODEC_ID_PCM_S24DAUD, 90 CODEC_ID_NONE, 91 daud_write_header, 92 daud_write_packet, 93 .flags= AVFMT_NOTIMESTAMPS, 94}; 95#endif 96