| /* |
| * D-Cinema audio muxer |
| * Copyright (c) 2005 Reimar Döffinger |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "avformat.h" |
| #include "mux.h" |
| |
| static int daud_init(struct AVFormatContext *s) |
| { |
| AVCodecParameters *par = s->streams[0]->codecpar; |
| int ret; |
| |
| if (par->ch_layout.nb_channels != 6) { |
| av_log(s, AV_LOG_ERROR, |
| "Invalid number of channels %d, must be exactly 6\n", |
| par->ch_layout.nb_channels); |
| return AVERROR(EINVAL); |
| } |
| |
| if (par->sample_rate != 96000) { |
| av_log(s, AV_LOG_ERROR, |
| "Invalid sample rate %d, must be 96000\n", |
| par->sample_rate); |
| return AVERROR(EINVAL); |
| } |
| |
| ret = ff_stream_add_bitstream_filter(s->streams[0], "pcm_rechunk", "n=2000:pad=0"); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt) |
| { |
| avio_wb16(s->pb, pkt->size); |
| avio_wb16(s->pb, 0x8010); // unknown |
| avio_write(s->pb, pkt->data, pkt->size); |
| return 0; |
| } |
| |
| const FFOutputFormat ff_daud_muxer = { |
| .p.name = "daud", |
| .p.long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio"), |
| .p.extensions = "302", |
| .p.audio_codec = AV_CODEC_ID_PCM_S24DAUD, |
| .p.video_codec = AV_CODEC_ID_NONE, |
| .p.subtitle_codec = AV_CODEC_ID_NONE, |
| .p.flags = AVFMT_NOTIMESTAMPS, |
| .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH | |
| FF_OFMT_FLAG_ONLY_DEFAULT_CODECS, |
| .init = daud_init, |
| .write_packet = daud_write_packet, |
| }; |