Revert "Revert of Parse FlexFEC RTP headers in Call and add integration with BWE. (patchset #17 id:460001 of https://codereview.webrtc.org/2553863003/ )"

Problem fixed: RTP header extensions were not properly set in tests.

BUG=webrtc:5654

Review-Url: https://codereview.webrtc.org/2593963003
Cr-Commit-Position: refs/heads/master@{#15741}
diff --git a/webrtc/modules/congestion_controller/congestion_controller.cc b/webrtc/modules/congestion_controller/congestion_controller.cc
index bbdd968..2fae264 100644
--- a/webrtc/modules/congestion_controller/congestion_controller.cc
+++ b/webrtc/modules/congestion_controller/congestion_controller.cc
@@ -197,6 +197,23 @@
 
 CongestionController::~CongestionController() {}
 
+void CongestionController::OnReceivedPacket(int64_t arrival_time_ms,
+                                            size_t payload_size,
+                                            const RTPHeader& header) {
+  // Send-side BWE.
+  if (header.extension.hasTransportSequenceNumber) {
+    remote_estimator_proxy_.IncomingPacket(arrival_time_ms, payload_size,
+                                           header);
+    return;
+  }
+
+  // Receive-side BWE.
+  if (remote_bitrate_estimator_) {
+    remote_bitrate_estimator_->IncomingPacket(arrival_time_ms, payload_size,
+                                              header);
+  }
+}
+
 void CongestionController::SetBweBitrates(int min_bitrate_bps,
                                           int start_bitrate_bps,
                                           int max_bitrate_bps) {
diff --git a/webrtc/modules/congestion_controller/congestion_controller_unittest.cc b/webrtc/modules/congestion_controller/congestion_controller_unittest.cc
index bdbaaf1..3850797 100644
--- a/webrtc/modules/congestion_controller/congestion_controller_unittest.cc
+++ b/webrtc/modules/congestion_controller/congestion_controller_unittest.cc
@@ -26,6 +26,18 @@
 using testing::SaveArg;
 using testing::StrictMock;
 
+namespace {
+
+// Helper to convert some time format to resolution used in absolute send time
+// header extension, rounded upwards. |t| is the time to convert, in some
+// resolution. |denom| is the value to divide |t| by to get whole seconds,
+// e.g. |denom| = 1000 if |t| is in milliseconds.
+uint32_t AbsSendTime(int64_t t, int64_t denom) {
+  return (((t << 18) + (denom >> 1)) / denom) & 0x00fffffful;
+}
+
+}  // namespace
+
 namespace webrtc {
 namespace test {
 
@@ -201,5 +213,33 @@
   controller_->Process();
 }
 
+TEST_F(CongestionControllerTest, OnReceivedPacketWithAbsSendTime) {
+  NiceMock<MockCongestionObserver> observer;
+  StrictMock<MockRemoteBitrateObserver> remote_bitrate_observer;
+  std::unique_ptr<PacedSender> pacer(new NiceMock<MockPacedSender>());
+  controller_.reset(
+      new CongestionController(&clock_, &observer, &remote_bitrate_observer,
+                               &event_log_, &packet_router_, std::move(pacer)));
+
+  size_t payload_size = 1000;
+  RTPHeader header;
+  header.ssrc = 0x11eb21c;
+  header.extension.hasAbsoluteSendTime = true;
+
+  std::vector<unsigned int> ssrcs;
+  EXPECT_CALL(remote_bitrate_observer, OnReceiveBitrateChanged(_, _))
+      .WillRepeatedly(SaveArg<0>(&ssrcs));
+
+  for (int i = 0; i < 10; ++i) {
+    clock_.AdvanceTimeMilliseconds((1000 * payload_size) / kInitialBitrateBps);
+    int64_t now_ms = clock_.TimeInMilliseconds();
+    header.extension.absoluteSendTime = AbsSendTime(now_ms, 1000);
+    controller_->OnReceivedPacket(now_ms, payload_size, header);
+  }
+
+  ASSERT_EQ(1u, ssrcs.size());
+  EXPECT_EQ(header.ssrc, ssrcs[0]);
+}
+
 }  // namespace test
 }  // namespace webrtc
diff --git a/webrtc/modules/congestion_controller/include/congestion_controller.h b/webrtc/modules/congestion_controller/include/congestion_controller.h
index 004a847..48b9531 100644
--- a/webrtc/modules/congestion_controller/include/congestion_controller.h
+++ b/webrtc/modules/congestion_controller/include/congestion_controller.h
@@ -68,6 +68,10 @@
                        std::unique_ptr<PacedSender> pacer);
   virtual ~CongestionController();
 
+  virtual void OnReceivedPacket(int64_t arrival_time_ms,
+                                size_t payload_size,
+                                const RTPHeader& header);
+
   virtual void SetBweBitrates(int min_bitrate_bps,
                               int start_bitrate_bps,
                               int max_bitrate_bps);
diff --git a/webrtc/modules/congestion_controller/include/mock/mock_congestion_controller.h b/webrtc/modules/congestion_controller/include/mock/mock_congestion_controller.h
index 1b932dc..aefb2be 100644
--- a/webrtc/modules/congestion_controller/include/mock/mock_congestion_controller.h
+++ b/webrtc/modules/congestion_controller/include/mock/mock_congestion_controller.h
@@ -13,6 +13,7 @@
 
 #include "webrtc/base/constructormagic.h"
 #include "webrtc/base/socket.h"
+#include "webrtc/common_types.h"
 #include "webrtc/modules/congestion_controller/include/congestion_controller.h"
 #include "webrtc/test/gmock.h"
 
@@ -44,6 +45,10 @@
                              remote_bitrate_observer,
                              event_log,
                              packet_router) {}
+  MOCK_METHOD3(OnReceivedPacket,
+               void(int64_t arrival_time_ms,
+                    size_t payload_size,
+                    const RTPHeader& header));
   MOCK_METHOD3(SetBweBitrates,
                void(int min_bitrate_bps,
                     int start_bitrate_bps,
diff --git a/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h b/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h
index 721d6c5..9ad0931 100644
--- a/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h
+++ b/webrtc/modules/rtp_rtcp/include/flexfec_receiver.h
@@ -16,9 +16,9 @@
 #include "webrtc/base/basictypes.h"
 #include "webrtc/base/sequenced_task_checker.h"
 #include "webrtc/call/call.h"
-#include "webrtc/modules/rtp_rtcp/include/flexfec_receiver.h"
 #include "webrtc/modules/rtp_rtcp/include/ulpfec_receiver.h"
 #include "webrtc/modules/rtp_rtcp/source/forward_error_correction.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_packet_received.h"
 #include "webrtc/system_wrappers/include/clock.h"
 
 namespace webrtc {
@@ -37,19 +37,19 @@
  public:
   FlexfecReceiver(uint32_t ssrc,
                   uint32_t protected_media_ssrc,
-                  RecoveredPacketReceiver* callback);
+                  RecoveredPacketReceiver* recovered_packet_receiver);
   ~FlexfecReceiver();
 
   // Inserts a received packet (can be either media or FlexFEC) into the
   // internal buffer, and sends the received packets to the erasure code.
   // All newly recovered packets are sent back through the callback.
-  bool AddAndProcessReceivedPacket(const uint8_t* packet, size_t packet_length);
+  bool AddAndProcessReceivedPacket(RtpPacketReceived packet);
 
   // Returns a counter describing the added and recovered packets.
   FecPacketCounter GetPacketCounter() const;
 
  private:
-  bool AddReceivedPacket(const uint8_t* packet, size_t packet_length);
+  bool AddReceivedPacket(RtpPacketReceived packet);
   bool ProcessReceivedPackets();
 
   // Config.
@@ -63,7 +63,7 @@
       GUARDED_BY(sequence_checker_);
   ForwardErrorCorrection::RecoveredPacketList recovered_packets_
       GUARDED_BY(sequence_checker_);
-  RecoveredPacketReceiver* const callback_ GUARDED_BY(sequence_checker_);
+  RecoveredPacketReceiver* const recovered_packet_receiver_;
 
   // Logging and stats.
   Clock* const clock_;
diff --git a/webrtc/modules/rtp_rtcp/source/flexfec_receiver.cc b/webrtc/modules/rtp_rtcp/source/flexfec_receiver.cc
index 369dd31..204ce84 100644
--- a/webrtc/modules/rtp_rtcp/source/flexfec_receiver.cc
+++ b/webrtc/modules/rtp_rtcp/source/flexfec_receiver.cc
@@ -10,11 +10,8 @@
 
 #include "webrtc/modules/rtp_rtcp/include/flexfec_receiver.h"
 
-#include <utility>
-
 #include "webrtc/base/logging.h"
 #include "webrtc/base/scoped_ref_ptr.h"
-#include "webrtc/modules/rtp_rtcp/source/rtp_packet_received.h"
 
 namespace webrtc {
 
@@ -31,13 +28,14 @@
 
 }  // namespace
 
-FlexfecReceiver::FlexfecReceiver(uint32_t ssrc,
-                                 uint32_t protected_media_ssrc,
-                                 RecoveredPacketReceiver* callback)
+FlexfecReceiver::FlexfecReceiver(
+    uint32_t ssrc,
+    uint32_t protected_media_ssrc,
+    RecoveredPacketReceiver* recovered_packet_receiver)
     : ssrc_(ssrc),
       protected_media_ssrc_(protected_media_ssrc),
       erasure_code_(ForwardErrorCorrection::CreateFlexfec()),
-      callback_(callback),
+      recovered_packet_receiver_(recovered_packet_receiver),
       clock_(Clock::GetRealTimeClock()),
       last_recovered_packet_ms_(-1) {
   // It's OK to create this object on a different thread/task queue than
@@ -47,10 +45,9 @@
 
 FlexfecReceiver::~FlexfecReceiver() = default;
 
-bool FlexfecReceiver::AddAndProcessReceivedPacket(const uint8_t* packet,
-                                                  size_t packet_length) {
+bool FlexfecReceiver::AddAndProcessReceivedPacket(RtpPacketReceived packet) {
   RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
-  if (!AddReceivedPacket(packet, packet_length)) {
+  if (!AddReceivedPacket(std::move(packet))) {
     return false;
   }
   return ProcessReceivedPackets();
@@ -61,42 +58,32 @@
   return packet_counter_;
 }
 
-bool FlexfecReceiver::AddReceivedPacket(const uint8_t* packet,
-                                        size_t packet_length) {
+bool FlexfecReceiver::AddReceivedPacket(RtpPacketReceived packet) {
   RTC_DCHECK_CALLED_SEQUENTIALLY(&sequence_checker_);
 
   // RTP packets with a full base header (12 bytes), but without payload,
   // could conceivably be useful in the decoding. Therefore we check
-  // with a strict inequality here.
-  if (packet_length < kRtpHeaderSize) {
-    LOG(LS_WARNING) << "Truncated packet, discarding.";
-    return false;
-  }
-
-  // TODO(brandtr): Consider how to handle received FlexFEC packets and
-  // the bandwidth estimator.
-  RtpPacketReceived parsed_packet;
-  if (!parsed_packet.Parse(packet, packet_length)) {
-    return false;
-  }
+  // with a non-strict inequality here.
+  RTC_DCHECK_GE(packet.size(), kRtpHeaderSize);
 
   // Demultiplex based on SSRC, and insert into erasure code decoder.
   std::unique_ptr<ReceivedPacket> received_packet(new ReceivedPacket());
-  received_packet->seq_num = parsed_packet.SequenceNumber();
-  received_packet->ssrc = parsed_packet.Ssrc();
+  received_packet->seq_num = packet.SequenceNumber();
+  received_packet->ssrc = packet.Ssrc();
   if (received_packet->ssrc == ssrc_) {
-    // This is a FEC packet belonging to this FlexFEC stream.
-    if (parsed_packet.payload_size() < kMinFlexfecHeaderSize) {
+    // This is a FlexFEC packet.
+    if (packet.payload_size() < kMinFlexfecHeaderSize) {
       LOG(LS_WARNING) << "Truncated FlexFEC packet, discarding.";
       return false;
     }
     received_packet->is_fec = true;
     ++packet_counter_.num_fec_packets;
+
     // Insert packet payload into erasure code.
     // TODO(brandtr): Remove this memcpy when the FEC packet classes
     // are using COW buffers internally.
     received_packet->pkt = rtc::scoped_refptr<Packet>(new Packet());
-    auto payload = parsed_packet.payload();
+    auto payload = packet.payload();
     memcpy(received_packet->pkt->data, payload.data(), payload.size());
     received_packet->pkt->length = payload.size();
   } else {
@@ -106,13 +93,14 @@
       return false;
     }
     received_packet->is_fec = false;
+
     // Insert entire packet into erasure code.
     // TODO(brandtr): Remove this memcpy too.
     received_packet->pkt = rtc::scoped_refptr<Packet>(new Packet());
-    memcpy(received_packet->pkt->data, parsed_packet.data(),
-           parsed_packet.size());
-    received_packet->pkt->length = parsed_packet.size();
+    memcpy(received_packet->pkt->data, packet.data(), packet.size());
+    received_packet->pkt->length = packet.size();
   }
+
   received_packets_.push_back(std::move(received_packet));
   ++packet_counter_.num_packets;
 
@@ -144,8 +132,8 @@
       continue;
     }
     ++packet_counter_.num_recovered_packets;
-    if (!callback_->OnRecoveredPacket(recovered_packet->pkt->data,
-                                      recovered_packet->pkt->length)) {
+    if (!recovered_packet_receiver_->OnRecoveredPacket(
+            recovered_packet->pkt->data, recovered_packet->pkt->length)) {
       return false;
     }
     recovered_packet->returned = true;
diff --git a/webrtc/modules/rtp_rtcp/source/flexfec_receiver_unittest.cc b/webrtc/modules/rtp_rtcp/source/flexfec_receiver_unittest.cc
index 8b46878..8bf0f37 100644
--- a/webrtc/modules/rtp_rtcp/source/flexfec_receiver_unittest.cc
+++ b/webrtc/modules/rtp_rtcp/source/flexfec_receiver_unittest.cc
@@ -16,6 +16,7 @@
 #include "webrtc/modules/rtp_rtcp/mocks/mock_recovered_packet_receiver.h"
 #include "webrtc/modules/rtp_rtcp/source/fec_test_helper.h"
 #include "webrtc/modules/rtp_rtcp/source/forward_error_correction.h"
+#include "webrtc/modules/rtp_rtcp/source/rtp_packet_received.h"
 #include "webrtc/test/gmock.h"
 #include "webrtc/test/gtest.h"
 
@@ -36,6 +37,12 @@
 constexpr uint32_t kFlexfecSsrc = 42984;
 constexpr uint32_t kMediaSsrc = 8353;
 
+RtpPacketReceived ParsePacket(const Packet& packet) {
+  RtpPacketReceived parsed_packet;
+  EXPECT_TRUE(parsed_packet.Parse(packet.data, packet.length));
+  return parsed_packet;
+}
+
 }  // namespace
 
 class FlexfecReceiverTest : public ::testing::Test {
@@ -93,21 +100,8 @@
   std::unique_ptr<Packet> media_packet(
       packet_generator_.NextPacket(0, kPayloadLength));
 
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(media_packet->data,
-                                                    media_packet->length));
-}
-
-TEST_F(FlexfecReceiverTest, FailsOnTruncatedMediaPacket) {
-  const size_t kNoPayload = 0;
-
-  packet_generator_.NewFrame(1);
-  std::unique_ptr<Packet> media_packet(
-      packet_generator_.NextPacket(0, kNoPayload));
-  // Simulate truncated media packet.
-  media_packet->length = kRtpHeaderSize - 1;
-
-  EXPECT_FALSE(receiver_.AddAndProcessReceivedPacket(media_packet->data,
-                                                     media_packet->length));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(*media_packet)));
 }
 
 TEST_F(FlexfecReceiverTest, ReceivesMediaAndFecPackets) {
@@ -117,13 +111,12 @@
   PacketList media_packets;
   PacketizeFrame(kNumMediaPackets, 0, &media_packets);
   std::list<Packet*> fec_packets = EncodeFec(media_packets, kNumFecPackets);
-  auto media_packet = media_packets.front().get();
+  const auto& media_packet = media_packets.front();
   auto fec_packet = packet_generator_.BuildFlexfecPacket(*fec_packets.front());
 
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(media_packet->data,
-                                                    media_packet->length));
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(fec_packet->data,
-                                                    fec_packet->length));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(*media_packet)));
+  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(*fec_packet)));
 }
 
 TEST_F(FlexfecReceiverTest, FailsOnTruncatedFecPacket) {
@@ -133,15 +126,14 @@
   PacketList media_packets;
   PacketizeFrame(kNumMediaPackets, 0, &media_packets);
   std::list<Packet*> fec_packets = EncodeFec(media_packets, kNumFecPackets);
-  auto media_packet = media_packets.front().get();
+  const auto& media_packet = media_packets.front();
   // Simulate truncated FlexFEC payload.
   fec_packets.front()->length = 1;
   auto fec_packet = packet_generator_.BuildFlexfecPacket(*fec_packets.front());
 
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(media_packet->data,
-                                                    media_packet->length));
-  EXPECT_FALSE(receiver_.AddAndProcessReceivedPacket(fec_packet->data,
-                                                     fec_packet->length));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(*media_packet)));
+  EXPECT_FALSE(receiver_.AddAndProcessReceivedPacket(ParsePacket(*fec_packet)));
 }
 
 TEST_F(FlexfecReceiverTest, FailsOnUnknownMediaSsrc) {
@@ -149,15 +141,15 @@
 
   PacketList media_packets;
   PacketizeFrame(kNumMediaPackets, 0, &media_packets);
-  auto media_packet = media_packets.front().get();
+  auto& media_packet = media_packets.front();
   // Corrupt the SSRC.
   media_packet->data[8] = 0;
   media_packet->data[9] = 1;
   media_packet->data[10] = 2;
   media_packet->data[11] = 3;
 
-  EXPECT_FALSE(receiver_.AddAndProcessReceivedPacket(media_packet->data,
-                                                     media_packet->length));
+  EXPECT_FALSE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(*media_packet)));
 }
 
 TEST_F(FlexfecReceiverTest, FailsOnUnknownFecSsrc) {
@@ -167,7 +159,7 @@
   PacketList media_packets;
   PacketizeFrame(kNumMediaPackets, 0, &media_packets);
   std::list<Packet*> fec_packets = EncodeFec(media_packets, kNumFecPackets);
-  auto media_packet = media_packets.front().get();
+  const auto& media_packet = media_packets.front();
   auto fec_packet = packet_generator_.BuildFlexfecPacket(*fec_packets.front());
   // Corrupt the SSRC.
   fec_packet->data[8] = 4;
@@ -175,10 +167,9 @@
   fec_packet->data[10] = 6;
   fec_packet->data[11] = 7;
 
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(media_packet->data,
-                                                    media_packet->length));
-  EXPECT_FALSE(receiver_.AddAndProcessReceivedPacket(fec_packet->data,
-                                                     fec_packet->length));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(*media_packet)));
+  EXPECT_FALSE(receiver_.AddAndProcessReceivedPacket(ParsePacket(*fec_packet)));
 }
 
 TEST_F(FlexfecReceiverTest, ReceivesMultiplePackets) {
@@ -191,8 +182,8 @@
 
   // Receive all media packets.
   for (const auto& media_packet : media_packets) {
-    EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(media_packet->data,
-                                                      media_packet->length));
+    EXPECT_TRUE(
+        receiver_.AddAndProcessReceivedPacket(ParsePacket(*media_packet)));
   }
 
   // Receive FEC packet.
@@ -200,7 +191,7 @@
   std::unique_ptr<Packet> packet_with_rtp_header =
       packet_generator_.BuildFlexfecPacket(*fec_packet);
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 }
 
 TEST_F(FlexfecReceiverTest, RecoversFromSingleMediaLoss) {
@@ -213,8 +204,7 @@
 
   // Receive first media packet but drop second.
   auto media_it = media_packets.begin();
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_it)->data,
-                                                    (*media_it)->length));
+  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_it)));
 
   // Receive FEC packet and ensure recovery of lost media packet.
   auto fec_it = fec_packets.begin();
@@ -227,7 +217,7 @@
           Args<0, 1>(ElementsAreArray((*media_it)->data, (*media_it)->length)))
       .WillOnce(Return(true));
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 }
 
 TEST_F(FlexfecReceiverTest, RecoversFromDoubleMediaLoss) {
@@ -251,7 +241,7 @@
           Args<0, 1>(ElementsAreArray((*media_it)->data, (*media_it)->length)))
       .WillOnce(Return(true));
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 
   // Receive second FEC packet and recover second lost media packet.
   fec_it++;
@@ -263,7 +253,7 @@
           Args<0, 1>(ElementsAreArray((*media_it)->data, (*media_it)->length)))
       .WillOnce(Return(true));
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 }
 
 TEST_F(FlexfecReceiverTest, DoesNotRecoverFromMediaAndFecLoss) {
@@ -276,8 +266,7 @@
 
   // Receive first media packet.
   auto media_it = media_packets.begin();
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_it)->data,
-                                                    (*media_it)->length));
+  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_it)));
 
   // Drop second media packet and FEC packet. Do not expect call back.
 }
@@ -292,8 +281,7 @@
 
   // Receive first media packet but drop second.
   auto media_it = media_packets.begin();
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_it)->data,
-                                                    (*media_it)->length));
+  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_it)));
 
   // Receive FEC packet and ensure recovery of lost media packet.
   auto fec_it = fec_packets.begin();
@@ -306,11 +294,11 @@
           Args<0, 1>(ElementsAreArray((*media_it)->data, (*media_it)->length)))
       .WillOnce(Return(true));
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 
   // Receive FEC packet again.
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 
   // Do not call back again.
 }
@@ -332,8 +320,7 @@
   // Drop every second media packet.
   auto media_it = media_packets.begin();
   while (media_it != media_packets.end()) {
-    EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_it)->data,
-                                                      (*media_it)->length));
+    EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_it)));
     ++media_it;
     if (media_it == media_packets.end()) {
       break;
@@ -356,7 +343,7 @@
             ElementsAreArray((*media_it)->data, (*media_it)->length)))
         .WillOnce(Return(true));
     EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-        fec_packet_with_rtp_header->data, fec_packet_with_rtp_header->length));
+        ParsePacket(*fec_packet_with_rtp_header)));
     ++media_it;
   }
 }
@@ -383,8 +370,7 @@
 
   // Receive all other media packets.
   while (media_it != media_packets.end()) {
-    EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_it)->data,
-                                                      (*media_it)->length));
+    EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_it)));
     ++media_it;
   }
 
@@ -399,7 +385,7 @@
           Args<0, 1>(ElementsAreArray((*media_it)->data, (*media_it)->length)))
       .WillOnce(Return(true));
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 }
 
 TEST_F(FlexfecReceiverTest, TooDelayedFecPacketDoesNotHelp) {
@@ -424,8 +410,7 @@
 
   // Receive all other media packets.
   while (media_it != media_packets.end()) {
-    EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_it)->data,
-                                                      (*media_it)->length));
+    EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_it)));
     ++media_it;
   }
 
@@ -434,7 +419,7 @@
   std::unique_ptr<Packet> packet_with_rtp_header =
       packet_generator_.BuildFlexfecPacket(**fec_it);
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 
   // Do not expect a call back.
 }
@@ -455,14 +440,14 @@
   auto media_packet3 = media_it++;
   auto media_packet4 = media_it++;
   auto media_packet5 = media_it++;
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_packet5)->data,
-                                                    (*media_packet5)->length));
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_packet2)->data,
-                                                    (*media_packet2)->length));
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_packet3)->data,
-                                                    (*media_packet3)->length));
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_packet0)->data,
-                                                    (*media_packet0)->length));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_packet5)));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_packet2)));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_packet3)));
+  EXPECT_TRUE(
+      receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_packet0)));
 
   // Expect to recover lost media packets.
   EXPECT_CALL(recovered_packet_receiver_,
@@ -482,7 +467,7 @@
   while (fec_it != fec_packets.end()) {
     packet_with_rtp_header = packet_generator_.BuildFlexfecPacket(**fec_it);
     EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-        packet_with_rtp_header->data, packet_with_rtp_header->length));
+        ParsePacket(*packet_with_rtp_header)));
     ++fec_it;
   }
 }
@@ -497,8 +482,7 @@
 
   // Receive first media packet but drop second.
   auto media_it = media_packets.begin();
-  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket((*media_it)->data,
-                                                    (*media_it)->length));
+  EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(ParsePacket(**media_it)));
 
   // Receive FEC packet and ensure recovery of lost media packet.
   auto fec_it = fec_packets.begin();
@@ -511,7 +495,7 @@
           Args<0, 1>(ElementsAreArray((*media_it)->data, (*media_it)->length)))
       .WillOnce(Return(true));
   EXPECT_TRUE(receiver_.AddAndProcessReceivedPacket(
-      packet_with_rtp_header->data, packet_with_rtp_header->length));
+      ParsePacket(*packet_with_rtp_header)));
 
   // Check stats calculations.
   FecPacketCounter packet_counter = receiver_.GetPacketCounter();
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_packet.cc b/webrtc/modules/rtp_rtcp/source/rtp_packet.cc
index b7d71c2..e720eeb 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_packet.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtp_packet.cc
@@ -86,6 +86,10 @@
   return true;
 }
 
+bool Packet::Parse(rtc::ArrayView<const uint8_t> packet) {
+  return Parse(packet.data(), packet.size());
+}
+
 bool Packet::Parse(rtc::CopyOnWriteBuffer buffer) {
   if (!ParseBuffer(buffer.cdata(), buffer.size())) {
     Clear();
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_packet.h b/webrtc/modules/rtp_rtcp/source/rtp_packet.h
index 2b3d38e..3c02125 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_packet.h
+++ b/webrtc/modules/rtp_rtcp/source/rtp_packet.h
@@ -31,6 +31,7 @@
 
   // Parse and copy given buffer into Packet.
   bool Parse(const uint8_t* buffer, size_t size);
+  bool Parse(rtc::ArrayView<const uint8_t> packet);
 
   // Parse and move given buffer into Packet.
   bool Parse(rtc::CopyOnWriteBuffer packet);