Use RtpPacketToSend in RtpSenderVideo

webrtc/modules/rtp_rtcp/source/producer_fec.cc

Index: webrtc/modules/rtp_rtcp/source/producer_fec.cc
diff --git a/webrtc/modules/rtp_rtcp/source/producer_fec.cc b/webrtc/modules/rtp_rtcp/source/producer_fec.cc
index b928020df3211d33c7a9be5c838b39f49708faa9..7c688a53113a2aa5b7c361f14bf3ea67c988868a 100644
--- a/webrtc/modules/rtp_rtcp/source/producer_fec.cc
+++ b/webrtc/modules/rtp_rtcp/source/producer_fec.cc
@@ -17,6 +17,7 @@
 #include "webrtc/base/checks.h"
 #include "webrtc/modules/rtp_rtcp/source/byte_io.h"
 #include "webrtc/modules/rtp_rtcp/source/forward_error_correction.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_packet_to_send.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_utility.h"
 
 namespace webrtc {
@@ -144,6 +145,20 @@ void ProducerFec::SetFecParameters(const FecProtectionParams* params,
   }
 }
 
+void ProducerFec::BuildRedPacket(int red_pl_type,
+                                 const RtpPacketToSend& media_packet,
+                                 RtpPacketToSend* red_packet) {
+  RTC_DCHECK_GE(red_packet->capacity(),
+                media_packet.size() + kRedForFecHeaderLength);
+  red_packet->CopyHeaderFrom(media_packet);
+  red_packet->SetPayloadType(red_pl_type);
+  uint8_t* red_payload = red_packet->AllocatePayload(
+      kRedForFecHeaderLength + media_packet.payload_size());
+  red_payload[0] = media_packet.PayloadType();
+  memcpy(&red_payload[kRedForFecHeaderLength], media_packet.payload(),
+         media_packet.payload_size());
+}
+
 int ProducerFec::AddRtpPacketAndGenerateFec(const uint8_t* data_buffer,
                                             size_t payload_length,
                                             size_t rtp_header_length) {