Initial implementation of RtpTransportControllerReceive and related interfaces.

webrtc/video/rtp_stream_receiver.cc

Index: webrtc/video/rtp_stream_receiver.cc
diff --git a/webrtc/video/rtp_stream_receiver.cc b/webrtc/video/rtp_stream_receiver.cc
index 90dd0da0e1cda44c4e130aa6ef55fef9303f7b9b..f3ec6e5c2112e60f8bae6e15ba745dd16f9a2b8e 100644
--- a/webrtc/video/rtp_stream_receiver.cc
+++ b/webrtc/video/rtp_stream_receiver.cc
@@ -97,7 +97,7 @@ RtpStreamReceiver::RtpStreamReceiver(
       remb_(remb),
       process_thread_(process_thread),
       ntp_estimator_(clock_),
-      rtp_header_parser_(RtpHeaderParser::Create()),
+      rtp_header_extensions_(config_.rtp.extensions),
       rtp_receiver_(RtpReceiver::CreateVideoReceiver(clock_,
                                                      this,
                                                      this,
@@ -135,11 +135,6 @@ RtpStreamReceiver::RtpStreamReceiver(
     remb_->AddReceiveChannel(rtp_rtcp_.get());
   }
 
-  for (size_t i = 0; i < config_.rtp.extensions.size(); ++i) {
-    EnableReceiveRtpHeaderExtension(config_.rtp.extensions[i].uri,
-                                    config_.rtp.extensions[i].id);
-  }
-
   static const int kMaxPacketAgeToNack = 450;
   const int max_reordering_threshold = (config_.rtp.nack.rtp_history_ms > 0)
                                            ? kMaxPacketAgeToNack
@@ -288,11 +283,14 @@ int32_t RtpStreamReceiver::OnReceivedPayloadData(
 
 bool RtpStreamReceiver::OnRecoveredPacket(const uint8_t* rtp_packet,
                                           size_t rtp_packet_length) {
-  RTPHeader header;
-  if (!rtp_header_parser_->Parse(rtp_packet, rtp_packet_length, &header)) {
+  RtpPacketReceived packet;
+  if (!packet.Parse(rtp_packet, rtp_packet_length))
     return false;
-  }
-  header.payload_type_frequency = kVideoPayloadTypeFrequency;
+  packet.IdentifyExtensions(rtp_header_extensions_);
+  packet.set_payload_type_frequency(kVideoPayloadTypeFrequency);
+
+  RTPHeader header;
+  packet.GetHeader(&header);
   bool in_order = IsPacketInOrder(header);
   return ReceivePacket(rtp_packet, rtp_packet_length, header, in_order);
 }
@@ -313,32 +311,34 @@ void RtpStreamReceiver::OnIncomingSSRCChanged(const uint32_t ssrc) {
   rtp_rtcp_->SetRemoteSSRC(ssrc);
 }
 
-void RtpStreamReceiver::OnRtpPacket(const RtpPacketReceived& packet) {
+bool RtpStreamReceiver::OnRtpPacketReceive(RtpPacketReceived* packet) {
   {
     rtc::CritScope lock(&receive_cs_);
     if (!receiving_) {
-      return;
+      return false;
     }
   }
 
   int64_t now_ms = clock_->TimeInMilliseconds();
+  packet->IdentifyExtensions(rtp_header_extensions_);
+  packet->set_payload_type_frequency(kVideoPayloadTypeFrequency);
 
   {
     // Periodically log the RTP header of incoming packets.
     rtc::CritScope lock(&receive_cs_);
     if (now_ms - last_packet_log_ms_ > kPacketLogIntervalMs) {
       std::stringstream ss;
-      ss << "Packet received on SSRC: " << packet.Ssrc()
-         << " with payload type: " << static_cast<int>(packet.PayloadType())
-         << ", timestamp: " << packet.Timestamp()
-         << ", sequence number: " << packet.SequenceNumber()
-         << ", arrival time: " << packet.arrival_time_ms();
+      ss << "Packet received on SSRC: " << packet->Ssrc()
+         << " with payload type: " << static_cast<int>(packet->PayloadType())
+         << ", timestamp: " << packet->Timestamp()
+         << ", sequence number: " << packet->SequenceNumber()
+         << ", arrival time: " << packet->arrival_time_ms();
       int32_t time_offset;
-      if (packet.GetExtension<TransmissionOffset>(&time_offset)) {
+      if (packet->GetExtension<TransmissionOffset>(&time_offset)) {
         ss << ", toffset: " << time_offset;
       }
       uint32_t send_time;
-      if (packet.GetExtension<AbsoluteSendTime>(&send_time)) {
+      if (packet->GetExtension<AbsoluteSendTime>(&send_time)) {
         ss << ", abs send time: " << send_time;
       }
       LOG(LS_INFO) << ss.str();
@@ -349,18 +349,18 @@ void RtpStreamReceiver::OnRtpPacket(const RtpPacketReceived& packet) {
   // TODO(nisse): Delete use of GetHeader, but needs refactoring of
   // ReceivePacket and IncomingPacket methods below.
   RTPHeader header;
-  packet.GetHeader(&header);
-
-  header.payload_type_frequency = kVideoPayloadTypeFrequency;
+  packet->GetHeader(&header);
 
   bool in_order = IsPacketInOrder(header);
   rtp_payload_registry_.SetIncomingPayloadType(header);
-  ReceivePacket(packet.data(), packet.size(), header, in_order);
+  ReceivePacket(packet->data(), packet->size(), header, in_order);
   // Update receive statistics after ReceivePacket.
   // Receive statistics will be reset if the payload type changes (make sure
   // that the first packet is included in the stats).
   rtp_receive_statistics_->IncomingPacket(
-      header, packet.size(), IsPacketRetransmitted(header, in_order));
+      header, packet->size(), IsPacketRetransmitted(header, in_order));
+
+  return true;
 }
 
 int32_t RtpStreamReceiver::RequestKeyFrame() {
@@ -630,16 +630,6 @@ void RtpStreamReceiver::UpdateHistograms() {
   }
 }
 
-void RtpStreamReceiver::EnableReceiveRtpHeaderExtension(
-    const std::string& extension, int id) {
-  // One-byte-extension local identifiers are in the range 1-14 inclusive.
-  RTC_DCHECK_GE(id, 1);
-  RTC_DCHECK_LE(id, 14);
-  RTC_DCHECK(RtpExtension::IsSupportedForVideo(extension));
-  RTC_CHECK(rtp_header_parser_->RegisterRtpHeaderExtension(
-      StringToRtpExtensionType(extension), id));
-}
-
 void RtpStreamReceiver::InsertSpsPpsIntoTracker(uint8_t payload_type) {
   auto codec_params_it = pt_codec_params_.find(payload_type);
   if (codec_params_it == pt_codec_params_.end())