mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/*
|
|
* Copyright (c) 2011 Miroslav Slugeň <Thunder.m@seznam.cz>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "avformat.h"
|
|
#include "rtpdec_formats.h"
|
|
|
|
#define RTP_G726_HANDLER(bitrate) \
|
|
static int g726_ ## bitrate ##_init(AVFormatContext *s, int st_index, PayloadContext *data) \
|
|
{ \
|
|
AVStream *stream = s->streams[st_index]; \
|
|
AVCodecContext *codec = stream->codec; \
|
|
\
|
|
codec->bit_rate = bitrate*1000; \
|
|
if (codec->sample_rate) \
|
|
codec->bits_per_coded_sample = \
|
|
av_clip((codec->bit_rate + codec->sample_rate/2) / codec->sample_rate, 2, 5); \
|
|
\
|
|
return 0; \
|
|
} \
|
|
\
|
|
RTPDynamicProtocolHandler ff_g726_ ## bitrate ## _dynamic_handler = { \
|
|
.enc_name = "G726-" #bitrate, \
|
|
.codec_type = AVMEDIA_TYPE_AUDIO, \
|
|
.codec_id = CODEC_ID_ADPCM_G726, \
|
|
.init = g726_ ## bitrate ## _init, \
|
|
}
|
|
|
|
RTP_G726_HANDLER(16);
|
|
RTP_G726_HANDLER(24);
|
|
RTP_G726_HANDLER(32);
|
|
RTP_G726_HANDLER(40);
|