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63 lines
2.0 KiB
63 lines
2.0 KiB
/* |
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* IRCAM muxer |
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* Copyright (c) 2012 Paul B Mahol |
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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 "libavutil/intreadwrite.h" |
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#include "avformat.h" |
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#include "avio_internal.h" |
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#include "internal.h" |
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#include "mux.h" |
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#include "rawenc.h" |
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#include "ircam.h" |
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static int ircam_write_header(AVFormatContext *s) |
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{ |
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AVCodecParameters *par = s->streams[0]->codecpar; |
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uint32_t tag; |
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if (s->nb_streams != 1) { |
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av_log(s, AV_LOG_ERROR, "only one stream is supported\n"); |
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return AVERROR(EINVAL); |
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} |
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tag = ff_codec_get_tag(ff_codec_ircam_le_tags, par->codec_id); |
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if (!tag) { |
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av_log(s, AV_LOG_ERROR, "unsupported codec\n"); |
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return AVERROR(EINVAL); |
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} |
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avio_wl32(s->pb, 0x0001A364); |
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avio_wl32(s->pb, av_q2intfloat((AVRational){par->sample_rate, 1})); |
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avio_wl32(s->pb, par->ch_layout.nb_channels); |
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avio_wl32(s->pb, tag); |
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ffio_fill(s->pb, 0, 1008); |
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return 0; |
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} |
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const FFOutputFormat ff_ircam_muxer = { |
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.p.name = "ircam", |
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.p.extensions = "sf,ircam", |
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.p.long_name = NULL_IF_CONFIG_SMALL("Berkeley/IRCAM/CARL Sound Format"), |
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.p.audio_codec = AV_CODEC_ID_PCM_S16LE, |
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.p.video_codec = AV_CODEC_ID_NONE, |
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.write_header = ircam_write_header, |
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.write_packet = ff_raw_write_packet, |
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.p.codec_tag = (const AVCodecTag *const []){ ff_codec_ircam_le_tags, 0 }, |
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};
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