rtpenc: Add an option for not sending RTCP packets

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

libavformat/rtpenc.c

@@ -388,8 +388,9 @@ static int rtp_write_packet(AVFormatContext *s1, AVPacket *pkt)
 
     rtcp_bytes = ((s->octet_count - s->last_octet_count) * RTCP_TX_RATIO_NUM) /
         RTCP_TX_RATIO_DEN;
-    if (s->first_packet || ((rtcp_bytes >= RTCP_SR_SIZE) &&
-                           (ff_ntp_time() - s->last_rtcp_ntp_time > 5000000))) {
+    if ((s->first_packet || ((rtcp_bytes >= RTCP_SR_SIZE) &&
+                            (ff_ntp_time() - s->last_rtcp_ntp_time > 5000000))) &&
+        !(s->flags & FF_RTP_FLAG_SKIP_RTCP)) {
         rtcp_send_sr(s1, ff_ntp_time());
         s->last_octet_count = s->octet_count;
         s->first_packet = 0;

libavformat/rtpenc.h

@@ -65,11 +65,13 @@ typedef struct RTPMuxContext RTPMuxContext;
 
 #define FF_RTP_FLAG_MP4A_LATM 1
 #define FF_RTP_FLAG_RFC2190   2
+#define FF_RTP_FLAG_SKIP_RTCP 4
 
 #define FF_RTP_FLAG_OPTS(ctx, fieldname) \
     { "rtpflags", "RTP muxer flags", offsetof(ctx, fieldname), AV_OPT_TYPE_FLAGS, {.dbl = 0}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \
     { "latm", "Use MP4A-LATM packetization instead of MPEG4-GENERIC for AAC", 0, AV_OPT_TYPE_CONST, {.dbl = FF_RTP_FLAG_MP4A_LATM}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \
     { "rfc2190", "Use RFC 2190 packetization instead of RFC 4629 for H.263", 0, AV_OPT_TYPE_CONST, {.dbl = FF_RTP_FLAG_RFC2190}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \
+    { "skip_rtcp", "Don't send RTCP sender reports", 0, AV_OPT_TYPE_CONST, {.dbl = FF_RTP_FLAG_SKIP_RTCP}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "rtpflags" }, \
 
 void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m);