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1 | /* |
2 | * Copyright (c) 2011 Miroslav Slugeň <Thunder.m@seznam.cz> | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
6 | * FFmpeg is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * FFmpeg is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with FFmpeg; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include "libavutil/attributes.h" | |
22 | #include "avformat.h" | |
23 | #include "rtpdec_formats.h" | |
24 | ||
25 | #define RTP_G726_HANDLER(bitrate) \ | |
26 | static av_cold int g726_ ## bitrate ##_init(AVFormatContext *s, int st_index, \ | |
27 | PayloadContext *data) \ | |
28 | { \ | |
29 | AVStream *stream = s->streams[st_index]; \ | |
30 | AVCodecContext *codec = stream->codec; \ | |
31 | \ | |
32 | codec->bits_per_coded_sample = bitrate/8; \ | |
33 | codec->bit_rate = codec->bits_per_coded_sample * codec->sample_rate; \ | |
34 | \ | |
35 | return 0; \ | |
36 | } \ | |
37 | \ | |
38 | RTPDynamicProtocolHandler ff_g726_ ## bitrate ## _dynamic_handler = { \ | |
39 | .enc_name = "G726-" #bitrate, \ | |
40 | .codec_type = AVMEDIA_TYPE_AUDIO, \ | |
41 | .codec_id = AV_CODEC_ID_ADPCM_G726, \ | |
42 | .init = g726_ ## bitrate ## _init, \ | |
43 | } | |
44 | ||
45 | RTP_G726_HANDLER(16); | |
46 | RTP_G726_HANDLER(24); | |
47 | RTP_G726_HANDLER(32); | |
48 | RTP_G726_HANDLER(40); |