sip: add receiver report to rtcp

     - only one to one rtcp is supported for currently
     - jitter stats and loss stats are not real

src/include/switch_types.h

@@ -547,6 +547,8 @@ typedef struct {
 typedef struct {
 	uint32_t packet_count;
 	uint32_t octet_count;
+
+	uint32_t peer_ssrc;
 } switch_rtcp_numbers_t;
 
 typedef struct {
@@ -769,7 +771,6 @@ typedef struct {
 	unsigned type:8;			/* packet type                       */
 	unsigned length:16;			/* length in 32-bit words - 1        */
 } switch_rtcp_hdr_t;
-
 #else /*  BIG_ENDIAN */
 
 typedef struct {

src/switch_rtp.c

@@ -264,6 +264,46 @@ struct switch_rtp {
 	switch_size_t last_flush_packet_count;
 };
 
+struct switch_rtcp_source {
+	unsigned ssrc1:32;
+	unsigned fraction_lost:8;
+	unsigned cumulative_lost:24;
+	unsigned hi_seq_recieved:32;
+	unsigned interarrival_jitter:32;
+	unsigned lsr:32;
+	unsigned lsr_delay:32;
+};
+
+
+#if SWITCH_BYTE_ORDER == __BIG_ENDIAN
+struct switch_rtcp_s_desc_head {
+	unsigned v:2;
+	unsigned padding:1;
+	unsigned sc:5;
+	unsigned pt:8;
+	unsigned length:16;
+};
+
+#else /*  BIG_ENDIAN */
+
+struct switch_rtcp_s_desc_head {
+	unsigned sc:5;
+	unsigned padding:1;
+	unsigned v:2;
+	unsigned pt:8;
+	unsigned length:16;
+};
+
+#endif
+
+
+struct switch_rtcp_s_desc_trunk {
+	unsigned ssrc:32;
+	unsigned cname:8;
+	unsigned length:8;
+	char text[1]; 
+};
+
 struct switch_rtcp_senderinfo {
 	unsigned ssrc:32;
 	unsigned ntp_msw:32;
@@ -271,6 +311,9 @@ struct switch_rtcp_senderinfo {
 	unsigned ts:32;
 	unsigned pc:32;
 	unsigned oc:32;
+	struct switch_rtcp_source sr_source;
+	struct switch_rtcp_s_desc_head sr_desc_head;
+	struct switch_rtcp_s_desc_trunk sr_desc_ssrc;
 };
 
 typedef enum {
@@ -1637,8 +1680,8 @@ SWITCH_DECLARE(switch_status_t) switch_rtp_create(switch_rtp_t **new_rtp_session
 	rtp_session->rtcp_send_msg.header.version = 2;
 	rtp_session->rtcp_send_msg.header.p = 0;
 	rtp_session->rtcp_send_msg.header.type = 200;
-	rtp_session->rtcp_send_msg.header.count = 0;
-	rtp_session->rtcp_send_msg.header.length = htons(6); 
+	rtp_session->rtcp_send_msg.header.count = 1;
+	rtp_session->rtcp_send_msg.header.length = htons(12); 
 
 
 	switch_rtp_set_interval(rtp_session, ms_per_packet, samples_per_interval);
@@ -2823,9 +2866,10 @@ static switch_status_t read_rtcp_packet(switch_rtp_t *rtp_session, switch_size_t
 
 				rtp_session->stats.rtcp.packet_count += sr->pc;
 				rtp_session->stats.rtcp.octet_count += sr->oc;
+				rtp_session->stats.rtcp.peer_ssrc = ntohl(sr->ssrc);
 
 				/* sender report */
-				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10,"Received a SR with %d report blocks, " \
+				switch_log_printf(SWITCH_CHANNEL_LOG, /*SWITCH_LOG_DEBUG10*/ SWITCH_LOG_INFO,"Received a SR with %d report blocks, " \
 								  "length in words = %d, " \
 								  "SSRC = 0x%X, " \
 								  "NTP MSW = %u, " \
@@ -4025,15 +4069,52 @@ static int rtp_common_write(switch_rtp_t *rtp_session,
 			switch_test_flag(rtp_session, SWITCH_RTP_FLAG_ENABLE_RTCP) && !switch_test_flag(rtp_session, SWITCH_RTP_FLAG_RTCP_PASSTHRU) &&
 			rtp_session->rtcp_interval && (rtp_session->stats.outbound.packet_count % rtp_session->rtcp_interval) == 0) {
 			struct switch_rtcp_senderinfo* sr = (struct switch_rtcp_senderinfo*)rtp_session->rtcp_send_msg.body;
+			const char* str_cname=NULL;
 
 			sr->ssrc = send_msg->header.ssrc;
-			sr->ntp_msw = htonl((u_long)rtp_session->send_time / 1000000 + 2208988800UL);
+			sr->ntp_msw = htonl((u_long)(rtp_session->send_time / 1000000 + 2208988800UL)); 
+			/*
 			sr->ntp_lsw = htonl((u_long)(rtp_session->send_time % 1000000 * ((UINT_MAX * 1.0)/ 1000000.0)));
+			*/
+			sr->ntp_lsw = htonl((u_long)(rtp_session->send_time % 1000000 * 4294.967296));
 			sr->ts = send_msg->header.ts;
 			sr->pc = htonl(rtp_session->stats.outbound.packet_count);
 			sr->oc = htonl((rtp_session->stats.outbound.raw_bytes - rtp_session->stats.outbound.packet_count * sizeof(srtp_hdr_t)));
 
-			rtcp_bytes = sizeof(switch_rtcp_hdr_t) + sizeof(struct switch_rtcp_senderinfo);
+
+			sr->sr_source.ssrc1 = htonl(rtp_session->stats.rtcp.peer_ssrc);
+			sr->sr_source.fraction_lost |= 0;
+			sr->sr_source.cumulative_lost |= 0;
+			sr->sr_source.hi_seq_recieved = htonl(rtp_session->last_seq);
+			sr->sr_source.interarrival_jitter = htonl(0);
+			sr->sr_source.lsr = htonl(0);
+			sr->sr_source.lsr_delay = htonl(0);
+
+			sr->sr_desc_head.v = 0x02;
+			sr->sr_desc_head.padding = 0;
+			sr->sr_desc_head.sc = 1;
+			sr->sr_desc_head.pt = 202;
+			sr->sr_desc_head.length = htons(5);
+
+
+			sr->sr_desc_ssrc.ssrc = send_msg->header.ssrc; /*htonl(rtp_session->stats.rtcp.peer_ssrc); */
+			sr->sr_desc_ssrc.cname = 0x1;
+			{
+				char bufa[30];
+				str_cname = switch_get_addr(bufa, sizeof(bufa), rtp_session->rtcp_local_addr);
+			
+				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "Setting RTCP src-1 to %s\n", str_cname);
+				sr->sr_desc_ssrc.length = strlen(str_cname);
+				memcpy ((char*)sr->sr_desc_ssrc.text, str_cname, strlen(str_cname));
+			}
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "Setting RTCP src-1 LENGTH  to %d (%d, %s)\n", sr->sr_desc_ssrc.length, sr->sr_desc_head.length, str_cname);
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "Setting msw = %d, lsw = %d \n", sr->ntp_msw, sr->ntp_lsw);
+			switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG10, "now = %lld, now lo = %d, now hi = %d\n", (int64_t)now, (int32_t)(now&0xFFFFFFFF), (int32_t)((now>>32&0xFFFFFFFF)));
+			
+			
+			rtcp_bytes = sizeof(switch_rtcp_hdr_t) + sizeof(struct switch_rtcp_senderinfo) + sr->sr_desc_ssrc.length -1 ;
+
+			
 #ifdef ENABLE_SRTP
 			if (switch_test_flag(rtp_session, SWITCH_RTP_FLAG_SECURE_SEND)) {
 				int sbytes = (int) rtcp_bytes;