FFmpeg
rtpdec_g726.c
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1 /*
2  * Copyright (c) 2011 Miroslav SlugeĊˆ <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  AVCodecParameters *par = stream->codecpar; \
31 \
32  par->bits_per_coded_sample = bitrate/8; \
33  par->bit_rate = par->bits_per_coded_sample * par->sample_rate; \
34 \
35  return 0; \
36 } \
37 \
38 const RTPDynamicProtocolHandler ff_g726_ ## bitrate ## _dynamic_handler = { \
39  .enc_name = "AAL2-G726-" #bitrate, \
40  .codec_type = AVMEDIA_TYPE_AUDIO, \
41  .codec_id = AV_CODEC_ID_ADPCM_G726, \
42  .init = g726_ ## bitrate ## _init, \
43 }; \
44 const RTPDynamicProtocolHandler ff_g726le_ ## bitrate ## _dynamic_handler = { \
45  .enc_name = "G726-" #bitrate, \
46  .codec_type = AVMEDIA_TYPE_AUDIO, \
47  .codec_id = AV_CODEC_ID_ADPCM_G726LE, \
48  .init = g726_ ## bitrate ## _init, \
49 }
50 
Macro definitions for various function/variable attributes.
Main libavformat public API header.
#define RTP_G726_HANDLER(bitrate)
Definition: rtpdec_g726.c:25