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2ba45a60 DM |
1 | /* |
2 | * D-Cinema audio muxer | |
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 "avformat.h" | |
23 | ||
24 | static 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 | ||
32 | static 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 | ||
45 | AVOutputFormat 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 | }; |