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7196b12b2b
The samples I found all have 2000 sample packets, and by forcing the packet size with a bsf we could automagically make muxing work for packets containing more than 3640 samples. Signed-off-by: Marton Balint <cus@passwd.hu>
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/*
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* D-Cinema audio muxer
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* Copyright (c) 2005 Reimar Döffinger
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avformat.h"
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#include "mux.h"
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static int daud_init(struct AVFormatContext *s)
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{
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AVCodecParameters *par = s->streams[0]->codecpar;
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int ret;
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if (par->ch_layout.nb_channels != 6) {
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av_log(s, AV_LOG_ERROR,
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"Invalid number of channels %d, must be exactly 6\n",
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par->ch_layout.nb_channels);
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return AVERROR(EINVAL);
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}
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if (par->sample_rate != 96000) {
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av_log(s, AV_LOG_ERROR,
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"Invalid sample rate %d, must be 96000\n",
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par->sample_rate);
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return AVERROR(EINVAL);
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}
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ret = ff_stream_add_bitstream_filter(s->streams[0], "pcm_rechunk", "n=2000:pad=0");
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if (ret < 0)
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return ret;
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return 0;
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}
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static int daud_write_packet(struct AVFormatContext *s, AVPacket *pkt)
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{
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avio_wb16(s->pb, pkt->size);
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avio_wb16(s->pb, 0x8010); // unknown
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avio_write(s->pb, pkt->data, pkt->size);
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return 0;
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}
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const FFOutputFormat ff_daud_muxer = {
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.p.name = "daud",
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.p.long_name = NULL_IF_CONFIG_SMALL("D-Cinema audio"),
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.p.extensions = "302",
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.p.audio_codec = AV_CODEC_ID_PCM_S24DAUD,
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.p.video_codec = AV_CODEC_ID_NONE,
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.p.flags = AVFMT_NOTIMESTAMPS,
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.init = daud_init,
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.write_packet = daud_write_packet,
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};
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