1cabdff1aSopenharmony_ci/* 2cabdff1aSopenharmony_ci * IRCAM muxer 3cabdff1aSopenharmony_ci * Copyright (c) 2012 Paul B Mahol 4cabdff1aSopenharmony_ci * 5cabdff1aSopenharmony_ci * This file is part of FFmpeg. 6cabdff1aSopenharmony_ci * 7cabdff1aSopenharmony_ci * FFmpeg is free software; you can redistribute it and/or 8cabdff1aSopenharmony_ci * modify it under the terms of the GNU Lesser General Public 9cabdff1aSopenharmony_ci * License as published by the Free Software Foundation; either 10cabdff1aSopenharmony_ci * version 2.1 of the License, or (at your option) any later version. 11cabdff1aSopenharmony_ci * 12cabdff1aSopenharmony_ci * FFmpeg is distributed in the hope that it will be useful, 13cabdff1aSopenharmony_ci * but WITHOUT ANY WARRANTY; without even the implied warranty of 14cabdff1aSopenharmony_ci * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15cabdff1aSopenharmony_ci * Lesser General Public License for more details. 16cabdff1aSopenharmony_ci * 17cabdff1aSopenharmony_ci * You should have received a copy of the GNU Lesser General Public 18cabdff1aSopenharmony_ci * License along with FFmpeg; if not, write to the Free Software 19cabdff1aSopenharmony_ci * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20cabdff1aSopenharmony_ci */ 21cabdff1aSopenharmony_ci 22cabdff1aSopenharmony_ci#include "libavutil/intreadwrite.h" 23cabdff1aSopenharmony_ci#include "avformat.h" 24cabdff1aSopenharmony_ci#include "avio_internal.h" 25cabdff1aSopenharmony_ci#include "internal.h" 26cabdff1aSopenharmony_ci#include "rawenc.h" 27cabdff1aSopenharmony_ci#include "ircam.h" 28cabdff1aSopenharmony_ci 29cabdff1aSopenharmony_cistatic int ircam_write_header(AVFormatContext *s) 30cabdff1aSopenharmony_ci{ 31cabdff1aSopenharmony_ci AVCodecParameters *par = s->streams[0]->codecpar; 32cabdff1aSopenharmony_ci uint32_t tag; 33cabdff1aSopenharmony_ci 34cabdff1aSopenharmony_ci if (s->nb_streams != 1) { 35cabdff1aSopenharmony_ci av_log(s, AV_LOG_ERROR, "only one stream is supported\n"); 36cabdff1aSopenharmony_ci return AVERROR(EINVAL); 37cabdff1aSopenharmony_ci } 38cabdff1aSopenharmony_ci 39cabdff1aSopenharmony_ci tag = ff_codec_get_tag(ff_codec_ircam_le_tags, par->codec_id); 40cabdff1aSopenharmony_ci if (!tag) { 41cabdff1aSopenharmony_ci av_log(s, AV_LOG_ERROR, "unsupported codec\n"); 42cabdff1aSopenharmony_ci return AVERROR(EINVAL); 43cabdff1aSopenharmony_ci } 44cabdff1aSopenharmony_ci 45cabdff1aSopenharmony_ci avio_wl32(s->pb, 0x0001A364); 46cabdff1aSopenharmony_ci avio_wl32(s->pb, av_q2intfloat((AVRational){par->sample_rate, 1})); 47cabdff1aSopenharmony_ci avio_wl32(s->pb, par->ch_layout.nb_channels); 48cabdff1aSopenharmony_ci avio_wl32(s->pb, tag); 49cabdff1aSopenharmony_ci ffio_fill(s->pb, 0, 1008); 50cabdff1aSopenharmony_ci return 0; 51cabdff1aSopenharmony_ci} 52cabdff1aSopenharmony_ci 53cabdff1aSopenharmony_ciconst AVOutputFormat ff_ircam_muxer = { 54cabdff1aSopenharmony_ci .name = "ircam", 55cabdff1aSopenharmony_ci .extensions = "sf,ircam", 56cabdff1aSopenharmony_ci .long_name = NULL_IF_CONFIG_SMALL("Berkeley/IRCAM/CARL Sound Format"), 57cabdff1aSopenharmony_ci .audio_codec = AV_CODEC_ID_PCM_S16LE, 58cabdff1aSopenharmony_ci .video_codec = AV_CODEC_ID_NONE, 59cabdff1aSopenharmony_ci .write_header = ircam_write_header, 60cabdff1aSopenharmony_ci .write_packet = ff_raw_write_packet, 61cabdff1aSopenharmony_ci .codec_tag = (const AVCodecTag *const []){ ff_codec_ircam_le_tags, 0 }, 62cabdff1aSopenharmony_ci}; 63