repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * D-Cinema audio demuxer | |
| 3 | * Copyright (c) 2005 Reimar Döffinger | |
| 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 "libavutil/channel_layout.h" | |
| 23 | #include "avformat.h" | |
| 24 | ||
| 25 | static int daud_header(AVFormatContext *s) { | |
| 26 | AVStream *st = avformat_new_stream(s, NULL); | |
| 27 | if (!st) | |
| 28 | return AVERROR(ENOMEM); | |
| 29 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; | |
| 30 | st->codec->codec_id = AV_CODEC_ID_PCM_S24DAUD; | |
| 31 | st->codec->codec_tag = MKTAG('d', 'a', 'u', 'd'); | |
| 32 | st->codec->channels = 6; | |
| 33 | st->codec->channel_layout = AV_CH_LAYOUT_5POINT1; | |
| 34 | st->codec->sample_rate = 96000; | |
| 35 | st->codec->bit_rate = 3 * 6 * 96000 * 8; | |
| 36 | st->codec->block_align = 3 * 6; | |
| 37 | st->codec->bits_per_coded_sample = 24; | |
| 38 | return 0; | |
| 39 | } | |
| 40 | ||
| 41 | static int daud_packet(AVFormatContext *s, AVPacket *pkt) { | |
| 42 | AVIOContext *pb = s->pb; | |
| 43 | int ret, size; | |
| 44 | if (avio_feof(pb)) | |
| 45 | return AVERROR(EIO); | |
| 46 | size = avio_rb16(pb); | |
| 47 | avio_rb16(pb); // unknown | |
| 48 | ret = av_get_packet(pb, pkt, size); | |
| 49 | pkt->stream_index = 0; | |
| 50 | return ret; | |
| 51 | } | |
| 52 | ||
| 53 | AVInputFormat ff_daud_demuxer = { | |
| 54 | .name = "daud", | |
| 55 | .long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio"), | |
| 56 | .read_header = daud_header, | |
| 57 | .read_packet = daud_packet, | |
| 58 | .extensions = "302,daud", | |
| 59 | }; |