Propagate packet pacing information to SendTimeHistory.

webrtc/modules/congestion_controller/transport_feedback_adapter_unittest.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <limits>
 #include <memory>
 #include <vector>
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/safe_conversions.h"
 #include "webrtc/modules/bitrate_controller/include/mock/mock_bitrate_controller.h"
 #include "webrtc/modules/congestion_controller/transport_feedback_adapter.h"
 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/transport_feedback.h"
 #include "webrtc/system_wrappers/include/clock.h"
 #include "webrtc/test/gmock.h"
 #include "webrtc/test/gtest.h"
 
 using ::testing::_;
 using ::testing::Invoke;
 
 namespace webrtc {
+
+namespace {
+const PacedPacketInfo kPacingInfo0(0, 5, 2000);
+const PacedPacketInfo kPacingInfo1(1, 8, 4000);
+const PacedPacketInfo kPacingInfo2(2, 14, 7000);
+const PacedPacketInfo kPacingInfo3(3, 20, 10000);
+const PacedPacketInfo kPacingInfo4(4, 22, 10000);
+}
+
 namespace test {
 
 class TransportFeedbackAdapterTest : public ::testing::Test {
  public:
   TransportFeedbackAdapterTest()
       : clock_(0), bitrate_controller_(this), target_bitrate_bps_(0) {}
 
   virtual ~TransportFeedbackAdapterTest() {}
 
   virtual void SetUp() {
@@ skipping 40 matching lines @@
     // packet, the truth[x].arrival_time and input[x].arrival_time may not be
     // equal. However, the difference must be the same for all x.
     int64_t arrival_time_delta =
         truth[0].arrival_time_ms - input[0].arrival_time_ms;
     for (size_t i = 0; i < len; ++i) {
       EXPECT_EQ(truth[i].arrival_time_ms,
                 input[i].arrival_time_ms + arrival_time_delta);
       EXPECT_EQ(truth[i].send_time_ms, input[i].send_time_ms);
       EXPECT_EQ(truth[i].sequence_number, input[i].sequence_number);
       EXPECT_EQ(truth[i].payload_size, input[i].payload_size);
-      EXPECT_EQ(truth[i].probe_cluster_id, input[i].probe_cluster_id);
+      EXPECT_EQ(truth[i].pacing_info, input[i].pacing_info);
     }
   }
 
   // Utility method, to reset arrival_time_ms before adding send time.
   void OnSentPacket(PacketInfo info) {
     info.arrival_time_ms = 0;
+    // TODO(philipel): Change -1, -1 to some values.
     adapter_->AddPacket(info.sequence_number, info.payload_size,
-                        info.probe_cluster_id);
+                        info.pacing_info);
     adapter_->OnSentPacket(info.sequence_number, info.send_time_ms);
   }
 
   SimulatedClock clock_;
   MockBitrateControllerAdapter bitrate_controller_;
   std::unique_ptr<TransportFeedbackAdapter> adapter_;
 
   uint32_t target_bitrate_bps_;
 };
 
 TEST_F(TransportFeedbackAdapterTest, AdaptsFeedbackAndPopulatesSendTimes) {
   std::vector<PacketInfo> packets;
-  packets.push_back(PacketInfo(100, 200, 0, 1500, 0));
-  packets.push_back(PacketInfo(110, 210, 1, 1500, 0));
-  packets.push_back(PacketInfo(120, 220, 2, 1500, 0));
-  packets.push_back(PacketInfo(130, 230, 3, 1500, 1));
-  packets.push_back(PacketInfo(140, 240, 4, 1500, 1));
+  packets.push_back(PacketInfo(100, 200, 0, 1500, kPacingInfo0));
+  packets.push_back(PacketInfo(110, 210, 1, 1500, kPacingInfo0));
+  packets.push_back(PacketInfo(120, 220, 2, 1500, kPacingInfo0));
+  packets.push_back(PacketInfo(130, 230, 3, 1500, kPacingInfo1));
+  packets.push_back(PacketInfo(140, 240, 4, 1500, kPacingInfo1));
 
   for (const PacketInfo& packet : packets)
     OnSentPacket(packet);
 
   rtcp::TransportFeedback feedback;
   feedback.SetBase(packets[0].sequence_number,
                    packets[0].arrival_time_ms * 1000);
 
   for (const PacketInfo& packet : packets) {
     EXPECT_TRUE(feedback.AddReceivedPacket(packet.sequence_number,
                                            packet.arrival_time_ms * 1000));
   }
 
   feedback.Build();
 
   adapter_->OnTransportFeedback(feedback);
   ComparePacketVectors(packets, adapter_->GetTransportFeedbackVector());
 }
 
 TEST_F(TransportFeedbackAdapterTest, LongFeedbackDelays) {
   const int64_t kFeedbackTimeoutMs = 60001;
   const int kMaxConsecutiveFailedLookups = 5;
   for (int i = 0; i < kMaxConsecutiveFailedLookups; ++i) {
     std::vector<PacketInfo> packets;
-    packets.push_back(PacketInfo(i * 100, 2 * i * 100, 0, 1500, 0));
-    packets.push_back(PacketInfo(i * 100 + 10, 2 * i * 100 + 10, 1, 1500, 0));
-    packets.push_back(PacketInfo(i * 100 + 20, 2 * i * 100 + 20, 2, 1500, 0));
-    packets.push_back(PacketInfo(i * 100 + 30, 2 * i * 100 + 30, 3, 1500, 1));
-    packets.push_back(PacketInfo(i * 100 + 40, 2 * i * 100 + 40, 4, 1500, 1));
+    packets.push_back(PacketInfo(i * 100, 2 * i * 100, 0, 1500, kPacingInfo0));
+    packets.push_back(
+        PacketInfo(i * 100 + 10, 2 * i * 100 + 10, 1, 1500, kPacingInfo0));
+    packets.push_back(
+        PacketInfo(i * 100 + 20, 2 * i * 100 + 20, 2, 1500, kPacingInfo0));
+    packets.push_back(
+        PacketInfo(i * 100 + 30, 2 * i * 100 + 30, 3, 1500, kPacingInfo1));
+    packets.push_back(
+        PacketInfo(i * 100 + 40, 2 * i * 100 + 40, 4, 1500, kPacingInfo1));
 
     for (const PacketInfo& packet : packets)
       OnSentPacket(packet);
 
     rtcp::TransportFeedback feedback;
     feedback.SetBase(packets[0].sequence_number,
                      packets[0].arrival_time_ms * 1000);
 
     for (const PacketInfo& packet : packets) {
       EXPECT_TRUE(feedback.AddReceivedPacket(packet.sequence_number,
                                              packet.arrival_time_ms * 1000));
     }
 
     feedback.Build();
 
     clock_.AdvanceTimeMilliseconds(kFeedbackTimeoutMs);
     PacketInfo later_packet(kFeedbackTimeoutMs + i * 100 + 40,
-                            kFeedbackTimeoutMs + i * 200 + 40, 5, 1500, 1);
+                            kFeedbackTimeoutMs + i * 200 + 40, 5, 1500,
+                            kPacingInfo1);
     OnSentPacket(later_packet);
 
     adapter_->OnTransportFeedback(feedback);
 
     // Check that packets have timed out.
     for (PacketInfo& packet : packets) {
       packet.send_time_ms = -1;
       packet.payload_size = 0;
-      packet.probe_cluster_id = -1;
     }
     ComparePacketVectors(packets, adapter_->GetTransportFeedbackVector());
   }
 
   // Target bitrate should have halved due to feedback delays.
   EXPECT_EQ(150000u, target_bitrate_bps_);
 
   // Test with feedback that isn't late enough to time out.
   {
     std::vector<PacketInfo> packets;
-    packets.push_back(PacketInfo(100, 200, 0, 1500, 0));
-    packets.push_back(PacketInfo(110, 210, 1, 1500, 0));
-    packets.push_back(PacketInfo(120, 220, 2, 1500, 0));
-    packets.push_back(PacketInfo(130, 230, 3, 1500, 1));
-    packets.push_back(PacketInfo(140, 240, 4, 1500, 1));
+    packets.push_back(PacketInfo(100, 200, 0, 1500, kPacingInfo0));
+    packets.push_back(PacketInfo(110, 210, 1, 1500, kPacingInfo0));
+    packets.push_back(PacketInfo(120, 220, 2, 1500, kPacingInfo0));
+    packets.push_back(PacketInfo(130, 230, 3, 1500, kPacingInfo1));
+    packets.push_back(PacketInfo(140, 240, 4, 1500, kPacingInfo1));
 
     for (const PacketInfo& packet : packets)
       OnSentPacket(packet);
 
     rtcp::TransportFeedback feedback;
     feedback.SetBase(packets[0].sequence_number,
                      packets[0].arrival_time_ms * 1000);
 
     for (const PacketInfo& packet : packets) {
       EXPECT_TRUE(feedback.AddReceivedPacket(packet.sequence_number,
                                              packet.arrival_time_ms * 1000));
     }
 
     feedback.Build();
 
     clock_.AdvanceTimeMilliseconds(kFeedbackTimeoutMs - 1);
     PacketInfo later_packet(kFeedbackTimeoutMs + 140, kFeedbackTimeoutMs + 240,
-                            5, 1500, 1);
+                            5, 1500, kPacingInfo1);
     OnSentPacket(later_packet);
 
     adapter_->OnTransportFeedback(feedback);
     ComparePacketVectors(packets, adapter_->GetTransportFeedbackVector());
   }
 }
 
 TEST_F(TransportFeedbackAdapterTest, HandlesDroppedPackets) {
   std::vector<PacketInfo> packets;
-  packets.push_back(PacketInfo(100, 200, 0, 1500, 1));
-  packets.push_back(PacketInfo(110, 210, 1, 1500, 2));
-  packets.push_back(PacketInfo(120, 220, 2, 1500, 3));
-  packets.push_back(PacketInfo(130, 230, 3, 1500, 4));
-  packets.push_back(PacketInfo(140, 240, 4, 1500, 5));
+  packets.push_back(PacketInfo(100, 200, 0, 1500, kPacingInfo0));
+  packets.push_back(PacketInfo(110, 210, 1, 1500, kPacingInfo1));
+  packets.push_back(PacketInfo(120, 220, 2, 1500, kPacingInfo2));
+  packets.push_back(PacketInfo(130, 230, 3, 1500, kPacingInfo3));
+  packets.push_back(PacketInfo(140, 240, 4, 1500, kPacingInfo4));
 
   const uint16_t kSendSideDropBefore = 1;
   const uint16_t kReceiveSideDropAfter = 3;
 
   for (const PacketInfo& packet : packets) {
     if (packet.sequence_number >= kSendSideDropBefore)
       OnSentPacket(packet);
   }
 
   rtcp::TransportFeedback feedback;
   feedback.SetBase(packets[0].sequence_number,
                    packets[0].arrival_time_ms * 1000);
 
   for (const PacketInfo& packet : packets) {
     if (packet.sequence_number <= kReceiveSideDropAfter) {
       EXPECT_TRUE(feedback.AddReceivedPacket(packet.sequence_number,
                                              packet.arrival_time_ms * 1000));
     }
   }
 
   feedback.Build();
 
   std::vector<PacketInfo> expected_packets(
       packets.begin(), packets.begin() + kReceiveSideDropAfter + 1);
   // Packets that have timed out on the send-side have lost the
   // information stored on the send-side.
   for (size_t i = 0; i < kSendSideDropBefore; ++i) {
     expected_packets[i].send_time_ms = -1;
-    expected_packets[i].probe_cluster_id = -1;
     expected_packets[i].payload_size = 0;
   }
 
   adapter_->OnTransportFeedback(feedback);
   ComparePacketVectors(expected_packets,
                        adapter_->GetTransportFeedbackVector());
 }
 
 TEST_F(TransportFeedbackAdapterTest, SendTimeWrapsBothWays) {
   int64_t kHighArrivalTimeMs = rtcp::TransportFeedback::kDeltaScaleFactor *
                                static_cast<int64_t>(1 << 8) *
                                static_cast<int64_t>((1 << 23) - 1) / 1000;
   std::vector<PacketInfo> packets;
-  packets.push_back(PacketInfo(kHighArrivalTimeMs - 64, 200, 0, 1500,
-                               PacedPacketInfo::kNotAProbe));
-  packets.push_back(PacketInfo(kHighArrivalTimeMs + 64, 210, 1, 1500,
-                               PacedPacketInfo::kNotAProbe));
-  packets.push_back(PacketInfo(kHighArrivalTimeMs, 220, 2, 1500,
-                               PacedPacketInfo::kNotAProbe));
+  packets.push_back(
+      PacketInfo(kHighArrivalTimeMs - 64, 200, 0, 1500, PacedPacketInfo()));
+  packets.push_back(
+      PacketInfo(kHighArrivalTimeMs + 64, 210, 1, 1500, PacedPacketInfo()));
+  packets.push_back(
+      PacketInfo(kHighArrivalTimeMs, 220, 2, 1500, PacedPacketInfo()));
 
   for (const PacketInfo& packet : packets)
     OnSentPacket(packet);
 
   for (size_t i = 0; i < packets.size(); ++i) {
     std::unique_ptr<rtcp::TransportFeedback> feedback(
         new rtcp::TransportFeedback());
     feedback->SetBase(packets[i].sequence_number,
                       packets[i].arrival_time_ms * 1000);
 
     EXPECT_TRUE(feedback->AddReceivedPacket(packets[i].sequence_number,
                                             packets[i].arrival_time_ms * 1000));
 
     rtc::Buffer raw_packet = feedback->Build();
     feedback = rtcp::TransportFeedback::ParseFrom(raw_packet.data(),
                                                   raw_packet.size());
 
     std::vector<PacketInfo> expected_packets;
     expected_packets.push_back(packets[i]);
 
     adapter_->OnTransportFeedback(*feedback.get());
     ComparePacketVectors(expected_packets,
                          adapter_->GetTransportFeedbackVector());
   }
 }
 
 TEST_F(TransportFeedbackAdapterTest, HandlesReordering) {
   std::vector<PacketInfo> packets;
-  packets.push_back(PacketInfo(120, 200, 0, 1500, 0));
-  packets.push_back(PacketInfo(110, 210, 1, 1500, 0));
-  packets.push_back(PacketInfo(100, 220, 2, 1500, 0));
+  packets.push_back(PacketInfo(120, 200, 0, 1500, kPacingInfo0));
+  packets.push_back(PacketInfo(110, 210, 1, 1500, kPacingInfo0));
+  packets.push_back(PacketInfo(100, 220, 2, 1500, kPacingInfo0));
   std::vector<PacketInfo> expected_packets;
   expected_packets.push_back(packets[2]);
   expected_packets.push_back(packets[1]);
   expected_packets.push_back(packets[0]);
 
   for (const PacketInfo& packet : packets)
     OnSentPacket(packet);
 
   rtcp::TransportFeedback feedback;
   feedback.SetBase(packets[0].sequence_number,
@@ skipping 15 matching lines @@
   std::vector<PacketInfo> sent_packets;
   const int64_t kSmallDeltaUs =
       rtcp::TransportFeedback::kDeltaScaleFactor * ((1 << 8) - 1);
   const int64_t kLargePositiveDeltaUs =
       rtcp::TransportFeedback::kDeltaScaleFactor *
       std::numeric_limits<int16_t>::max();
   const int64_t kLargeNegativeDeltaUs =
       rtcp::TransportFeedback::kDeltaScaleFactor *
       std::numeric_limits<int16_t>::min();
 
-  PacketInfo info(100, 200, 0, 1500, true, PacedPacketInfo::kNotAProbe);
+  PacketInfo info(100, 200, 0, 1500, true, PacedPacketInfo());
   sent_packets.push_back(info);
 
   info.send_time_ms += kSmallDeltaUs / 1000;
   info.arrival_time_ms += kSmallDeltaUs / 1000;
   ++info.sequence_number;
   sent_packets.push_back(info);
 
   info.send_time_ms += kLargePositiveDeltaUs / 1000;
   info.arrival_time_ms += kLargePositiveDeltaUs / 1000;
   ++info.sequence_number;
@@ skipping 68 matching lines @@
 
 TEST_F(TransportFeedbackAdapterTest, UpdatesDelayBasedEstimate) {
   uint16_t seq_num = 0;
   size_t kPayloadSize = 1000;
   // The test must run and insert packets/feedback long enough that the
   // BWE computes a valid estimate.
   const int64_t kRunTimeMs = 6000;
   int64_t start_time_ms = clock_.TimeInMilliseconds();
   while (clock_.TimeInMilliseconds() - start_time_ms < kRunTimeMs) {
     PacketInfo packet(clock_.TimeInMilliseconds(), clock_.TimeInMilliseconds(),
-                      seq_num, kPayloadSize, PacedPacketInfo::kNotAProbe);
+                      seq_num, kPayloadSize, PacedPacketInfo());
     OnSentPacket(packet);
     // Create expected feedback and send into adapter.
     std::unique_ptr<rtcp::TransportFeedback> feedback(
         new rtcp::TransportFeedback());
     feedback->SetBase(packet.sequence_number, packet.arrival_time_ms * 1000);
     EXPECT_TRUE(feedback->AddReceivedPacket(packet.sequence_number,
                                             packet.arrival_time_ms * 1000));
     rtc::Buffer raw_packet = feedback->Build();
     feedback = rtcp::TransportFeedback::ParseFrom(raw_packet.data(),
                                                   raw_packet.size());
     EXPECT_TRUE(feedback.get() != nullptr);
     adapter_->OnTransportFeedback(*feedback.get());
     clock_.AdvanceTimeMilliseconds(50);
     ++seq_num;
   }
   EXPECT_GT(target_bitrate_bps_, 0u);
 }
 
 }  // namespace test
 }  // namespace webrtc