rtpdec: Templatize the code for different g726 bitrate variants

Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/rtpdec_g726.c

@@ -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);