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rtpdec: Templatize the code for different g726 bitrate variants

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Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2011-11-30 18:05:06 +02:00
parent bb8a6e03cc
commit c8f0e88b20
1 changed files with 23 additions and 77 deletions
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100
libavformat/rtpdec_g726.c
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@ -21,82 +21,28 @@
#include "avformat.h"
#include "rtpdec_formats.h"
static int g726_16_init(AVFormatContext *s, int st_index, PayloadContext *data)
{
AVStream *stream = s->streams[st_index];
AVCodecContext *codec = stream->codec;
codec->bit_rate = 16000;
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;
#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, \
}
static int g726_24_init(AVFormatContext *s, int st_index, PayloadContext *data)
{
AVStream *stream = s->streams[st_index];
AVCodecContext *codec = stream->codec;
codec->bit_rate = 24000;
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;
}
static int g726_32_init(AVFormatContext *s, int st_index, PayloadContext *data)
{
AVStream *stream = s->streams[st_index];
AVCodecContext *codec = stream->codec;
codec->bit_rate = 32000;
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;
}
static int g726_40_init(AVFormatContext *s, int st_index, PayloadContext *data)
{
AVStream *stream = s->streams[st_index];
AVCodecContext *codec = stream->codec;
codec->bit_rate = 40000;
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_16_dynamic_handler = {
.enc_name = "G726-16",
.codec_type = AVMEDIA_TYPE_AUDIO,
.codec_id = CODEC_ID_ADPCM_G726,
.init = g726_16_init,
};
RTPDynamicProtocolHandler ff_g726_24_dynamic_handler = {
.enc_name = "G726-24",
.codec_type = AVMEDIA_TYPE_AUDIO,
.codec_id = CODEC_ID_ADPCM_G726,
.init = g726_24_init,
};
RTPDynamicProtocolHandler ff_g726_32_dynamic_handler = {
.enc_name = "G726-32",
.codec_type = AVMEDIA_TYPE_AUDIO,
.codec_id = CODEC_ID_ADPCM_G726,
.init = g726_32_init,
};
RTPDynamicProtocolHandler ff_g726_40_dynamic_handler = {
.enc_name = "G726-40",
.codec_type = AVMEDIA_TYPE_AUDIO,
.codec_id = CODEC_ID_ADPCM_G726,
.init = g726_40_init,
};
RTP_G726_HANDLER(16);
RTP_G726_HANDLER(24);
RTP_G726_HANDLER(32);
RTP_G726_HANDLER(40);