| 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 | }; |