repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * g722 raw demuxer | |
| 3 | * Copyright (c) 2010 Martin Storsjo | |
| 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/avassert.h" | |
| 23 | #include "avformat.h" | |
| 24 | #include "internal.h" | |
| 25 | #include "rawdec.h" | |
| 26 | ||
| 27 | static int g722_read_header(AVFormatContext *s) | |
| 28 | { | |
| 29 | AVStream *st; | |
| 30 | ||
| 31 | st = avformat_new_stream(s, NULL); | |
| 32 | if (!st) | |
| 33 | return AVERROR(ENOMEM); | |
| 34 | ||
| 35 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; | |
| 36 | st->codec->codec_id = AV_CODEC_ID_ADPCM_G722; | |
| 37 | st->codec->sample_rate = 16000; | |
| 38 | st->codec->channels = 1; | |
| 39 | ||
| 40 | st->codec->bits_per_coded_sample = | |
| 41 | av_get_bits_per_sample(st->codec->codec_id); | |
| 42 | ||
| 43 | av_assert0(st->codec->bits_per_coded_sample > 0); | |
| 44 | ||
| 45 | avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); | |
| 46 | return 0; | |
| 47 | } | |
| 48 | ||
| 49 | AVInputFormat ff_g722_demuxer = { | |
| 50 | .name = "g722", | |
| 51 | .long_name = NULL_IF_CONFIG_SMALL("raw G.722"), | |
| 52 | .read_header = g722_read_header, | |
| 53 | .read_packet = ff_raw_read_partial_packet, | |
| 54 | .flags = AVFMT_GENERIC_INDEX, | |
| 55 | .extensions = "g722,722", | |
| 56 | .raw_codec_id = AV_CODEC_ID_ADPCM_G722, | |
| 57 | }; |