| /* |
| * g722 raw demuxer |
| * Copyright (c) 2010 Martin Storsjo |
| * |
| * 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 "libavutil/avassert.h" |
| #include "avformat.h" |
| #include "internal.h" |
| #include "rawdec.h" |
| |
| static int g722_read_header(AVFormatContext *s) |
| { |
| AVStream *st; |
| |
| st = avformat_new_stream(s, NULL); |
| if (!st) |
| return AVERROR(ENOMEM); |
| |
| st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
| st->codecpar->codec_id = AV_CODEC_ID_ADPCM_G722; |
| st->codecpar->sample_rate = 16000; |
| st->codecpar->channels = 1; |
| |
| st->codecpar->bits_per_coded_sample = |
| av_get_bits_per_sample(st->codecpar->codec_id); |
| |
| av_assert0(st->codecpar->bits_per_coded_sample > 0); |
| |
| avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); |
| return 0; |
| } |
| |
| FF_RAW_DEMUXER_CLASS(g722) |
| AVInputFormat ff_g722_demuxer = { |
| .name = "g722", |
| .long_name = NULL_IF_CONFIG_SMALL("raw G.722"), |
| .read_header = g722_read_header, |
| .read_packet = ff_raw_read_partial_packet, |
| .flags = AVFMT_GENERIC_INDEX, |
| .extensions = "g722,722", |
| .raw_codec_id = AV_CODEC_ID_ADPCM_G722, |
| .priv_data_size = sizeof(FFRawDemuxerContext), |
| .priv_class = &g722_demuxer_class,}; |