suppress frame timestamp when raw write mode is set

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10690 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/switch_rtp.c

@@ -2198,7 +2198,7 @@ SWITCH_DECLARE(int) switch_rtp_write_frame(switch_rtp_t *rtp_session, switch_fra
 	} else {
 		data = frame->data;
 		len = frame->datalen;
-		ts = (uint32_t) frame->timestamp;
+		ts = switch_test_flag(rtp_session, SWITCH_RTP_FLAG_RAW_WRITE) ? (uint32_t) frame->timestamp : 0;
 	}
 
 	return rtp_common_write(rtp_session, send_msg, data, len, payload, ts, &frame->flags);