Handle G.722 in RTP, and all the exceptions mandated in RFC 3551

Originally committed as revision 25125 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 6 insertions, 0 deletions

diff --git a/libavformat/sdp.c b/libavformat/sdp.c
index f7c11934ac..a4bf7fb202 100644
--- a/libavformat/sdp.c
+++ b/libavformat/sdp.c
@@ -419,6 +419,12 @@ static char *sdp_write_media_attributes(char *buff, int size, AVCodecContext *c,
             av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n",
                                      payload_type);
             break;
+        case CODEC_ID_ADPCM_G722:
+            if (payload_type >= RTP_PT_PRIVATE)
+                av_strlcatf(buff, size, "a=rtpmap:%d G722/%d/%d\r\n",
+                                         payload_type,
+                                         8000, c->channels);
+            break;
         default:
             /* Nothing special to do here... */
             break;