RtpPacketReceiver base class and OnRtpPacket, with a pre-parsed RTP packet.

webrtc/voice_engine/channel.cc

Index: webrtc/voice_engine/channel.cc
diff --git a/webrtc/voice_engine/channel.cc b/webrtc/voice_engine/channel.cc
index a9cf2b26dc8edea51bb8d56b57d13a52275e58b2..c64bbf035d85f27abd571f4f5f8d905436057508 100644
--- a/webrtc/voice_engine/channel.cc
+++ b/webrtc/voice_engine/channel.cc
@@ -32,6 +32,7 @@
 #include "webrtc/modules/rtp_rtcp/include/receive_statistics.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_payload_registry.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_receiver.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_packet_received.h"
 #include "webrtc/modules/rtp_rtcp/source/rtp_receiver_strategy.h"
 #include "webrtc/modules/utility/include/process_thread.h"
 #include "webrtc/system_wrappers/include/trace.h"
@@ -1634,9 +1635,7 @@ int32_t Channel::DeRegisterExternalTransport() {
   return 0;
 }
 
-int32_t Channel::ReceivedRTPPacket(const uint8_t* received_packet,
-                                   size_t length,
-                                   const PacketTime& packet_time) {
+int32_t Channel::OnRTPPacket(const RtpPacketReceived& packet) {
   WEBRTC_TRACE(kTraceStream, kTraceVoice, VoEId(_instanceId, _channelId),
                "Channel::ReceivedRTPPacket()");
 
@@ -1644,21 +1643,18 @@ int32_t Channel::ReceivedRTPPacket(const uint8_t* received_packet,
   UpdatePlayoutTimestamp(false);
 
   RTPHeader header;
-  if (!rtp_header_parser_->Parse(received_packet, length, &header)) {
-    WEBRTC_TRACE(webrtc::kTraceDebug, webrtc::kTraceVoice, _channelId,
-                 "Incoming packet: invalid RTP header");
-    return -1;
-  }
+  packet.GetHeader(&header);
   header.payload_type_frequency =
       rtp_payload_registry_->GetPayloadTypeFrequency(header.payloadType);
   if (header.payload_type_frequency < 0)
     return -1;
   bool in_order = IsPacketInOrder(header);
   rtp_receive_statistics_->IncomingPacket(
-      header, length, IsPacketRetransmitted(header, in_order));
+      header, packet.size(), IsPacketRetransmitted(header, in_order));
   rtp_payload_registry_->SetIncomingPayloadType(header);
 
-  return ReceivePacket(received_packet, length, header, in_order) ? 0 : -1;
+  // TODO(nisse): Is .data() and .size() right?
+  return ReceivePacket(packet.data(), packet.size(), header, in_order) ? 0 : -1;
 }
 
 bool Channel::ReceivePacket(const uint8_t* packet,