repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * IRCAM muxer | |
| 3 | * Copyright (c) 2012 Paul B Mahol | |
| 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 "libavutil/intreadwrite.h" | |
| 23 | #include "avformat.h" | |
| 24 | #include "avio_internal.h" | |
| 25 | #include "internal.h" | |
| 26 | #include "rawenc.h" | |
| 27 | #include "ircam.h" | |
| 28 | ||
| 29 | static int ircam_write_header(AVFormatContext *s) | |
| 30 | { | |
| 31 | AVCodecContext *codec = s->streams[0]->codec; | |
| 32 | uint32_t tag; | |
| 33 | ||
| 34 | if (s->nb_streams != 1) { | |
| 35 | av_log(s, AV_LOG_ERROR, "only one stream is supported\n"); | |
| 36 | return AVERROR(EINVAL); | |
| 37 | } | |
| 38 | ||
| 39 | tag = ff_codec_get_tag(ff_codec_ircam_le_tags, codec->codec_id); | |
| 40 | if (!tag) { | |
| 41 | av_log(s, AV_LOG_ERROR, "unsupported codec\n"); | |
| 42 | return AVERROR(EINVAL); | |
| 43 | } | |
| 44 | ||
| 45 | avio_wl32(s->pb, 0x0001A364); | |
| 46 | avio_wl32(s->pb, av_float2int(codec->sample_rate)); | |
| 47 | avio_wl32(s->pb, codec->channels); | |
| 48 | avio_wl32(s->pb, tag); | |
| 49 | ffio_fill(s->pb, 0, 1008); | |
| 50 | return 0; | |
| 51 | } | |
| 52 | ||
| 53 | AVOutputFormat ff_ircam_muxer = { | |
| 54 | .name = "ircam", | |
| 55 | .extensions = "sf,ircam", | |
| 56 | .long_name = NULL_IF_CONFIG_SMALL("Berkeley/IRCAM/CARL Sound Format"), | |
| 57 | .audio_codec = AV_CODEC_ID_PCM_S16LE, | |
| 58 | .video_codec = AV_CODEC_ID_NONE, | |
| 59 | .write_header = ircam_write_header, | |
| 60 | .write_packet = ff_raw_write_packet, | |
| 61 | .codec_tag = (const AVCodecTag *const []){ ff_codec_ircam_le_tags, 0 }, | |
| 62 | }; |