Make rtp_write_header() fail in case of unsupported payload type

Originally committed as revision 18204 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/rtpenc.c

@@ -39,6 +39,31 @@ static uint64_t ntp_time(void)
   return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
 }
 
+static int is_supported(enum CodecID id)
+{
+    switch(id) {
+    case CODEC_ID_H264:
+    case CODEC_ID_MPEG1VIDEO:
+    case CODEC_ID_MPEG2VIDEO:
+    case CODEC_ID_MPEG4:
+    case CODEC_ID_AAC:
+    case CODEC_ID_MP2:
+    case CODEC_ID_MP3:
+    case CODEC_ID_PCM_ALAW:
+    case CODEC_ID_PCM_MULAW:
+    case CODEC_ID_PCM_S8:
+    case CODEC_ID_PCM_S16BE:
+    case CODEC_ID_PCM_S16LE:
+    case CODEC_ID_PCM_U16BE:
+    case CODEC_ID_PCM_U16LE:
+    case CODEC_ID_PCM_U8:
+    case CODEC_ID_MPEG2TS:
+        return 1;
+    default:
+        return 0;
+    }
+}
+
 static int rtp_write_header(AVFormatContext *s1)
 {
     RTPMuxContext *s = s1->priv_data;
@@ -48,6 +73,11 @@ static int rtp_write_header(AVFormatContext *s1)
     if (s1->nb_streams != 1)
         return -1;
     st = s1->streams[0];
+    if (!is_supported(st->codec->codec_id)) {
+        av_log(s1, AV_LOG_ERROR, "Unsupported codec %x\n", st->codec->codec_id);
+
+        return -1;
+    }
 
     payload_type = ff_rtp_get_payload_type(st->codec);
     if (payload_type < 0)