blob: 727a9bca23102b82f8f2a4f221cb01c13f613222 [file] [log] [blame]
/*
* Copyright (c) 2017 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 "modules/rtp_rtcp/source/rtcp_transceiver_impl.h"
#include <vector>
#include "absl/memory/memory.h"
#include "api/rtp_headers.h"
#include "api/video/video_bitrate_allocation.h"
#include "modules/rtp_rtcp/include/receive_statistics.h"
#include "modules/rtp_rtcp/mocks/mock_rtcp_rtt_stats.h"
#include "modules/rtp_rtcp/source/rtcp_packet/app.h"
#include "modules/rtp_rtcp/source/rtcp_packet/bye.h"
#include "modules/rtp_rtcp/source/rtcp_packet/compound_packet.h"
#include "modules/rtp_rtcp/source/time_util.h"
#include "rtc_base/event.h"
#include "rtc_base/fake_clock.h"
#include "rtc_base/task_queue_for_test.h"
#include "test/gmock.h"
#include "test/gtest.h"
#include "test/mock_transport.h"
#include "test/rtcp_packet_parser.h"
namespace {
using ::testing::_;
using ::testing::ElementsAre;
using ::testing::Return;
using ::testing::SizeIs;
using ::testing::StrictMock;
using ::webrtc::CompactNtp;
using ::webrtc::CompactNtpRttToMs;
using ::webrtc::MockRtcpRttStats;
using ::webrtc::MockTransport;
using ::webrtc::NtpTime;
using ::webrtc::RtcpTransceiverConfig;
using ::webrtc::RtcpTransceiverImpl;
using ::webrtc::SaturatedUsToCompactNtp;
using ::webrtc::TaskQueueForTest;
using ::webrtc::TimeMicrosToNtp;
using ::webrtc::VideoBitrateAllocation;
using ::webrtc::rtcp::Bye;
using ::webrtc::rtcp::CompoundPacket;
using ::webrtc::rtcp::ReportBlock;
using ::webrtc::rtcp::SenderReport;
using ::webrtc::test::RtcpPacketParser;
class MockReceiveStatisticsProvider : public webrtc::ReceiveStatisticsProvider {
public:
MOCK_METHOD1(RtcpReportBlocks, std::vector<ReportBlock>(size_t));
};
class MockMediaReceiverRtcpObserver : public webrtc::MediaReceiverRtcpObserver {
public:
MOCK_METHOD3(OnSenderReport, void(uint32_t, NtpTime, uint32_t));
MOCK_METHOD1(OnBye, void(uint32_t));
MOCK_METHOD2(OnBitrateAllocation,
void(uint32_t, const VideoBitrateAllocation&));
};
// Since some tests will need to wait for this period, make it small to avoid
// slowing tests too much. As long as there are test bots with high scheduler
// granularity, small period should be ok.
constexpr int kReportPeriodMs = 10;
// On some systems task queue might be slow, instead of guessing right
// grace period, use very large timeout, 100x larger expected wait time.
// Use finite timeout to fail tests rather than hang them.
constexpr int kAlmostForeverMs = 1000;
// Helper to wait for an rtcp packet produced on a different thread/task queue.
class FakeRtcpTransport : public webrtc::Transport {
public:
bool SendRtcp(const uint8_t* data, size_t size) override {
sent_rtcp_.Set();
return true;
}
bool SendRtp(const uint8_t*, size_t, const webrtc::PacketOptions&) override {
ADD_FAILURE() << "RtcpTransciver shouldn't send rtp packets.";
return true;
}
// Returns true when packet was received by the transport.
bool WaitPacket() {
// Normally packet should be sent fast, long before the timeout.
bool packet_sent = sent_rtcp_.Wait(kAlmostForeverMs);
// Disallow tests to wait almost forever for no packets.
EXPECT_TRUE(packet_sent);
// Return wait result even though it is expected to be true, so that
// individual tests can EXPECT on it for better error message.
return packet_sent;
}
private:
rtc::Event sent_rtcp_;
};
class RtcpParserTransport : public webrtc::Transport {
public:
explicit RtcpParserTransport(RtcpPacketParser* parser) : parser_(parser) {}
// Returns total number of rtcp packet received.
int num_packets() const { return num_packets_; }
private:
bool SendRtcp(const uint8_t* data, size_t size) override {
++num_packets_;
parser_->Parse(data, size);
return true;
}
bool SendRtp(const uint8_t*, size_t, const webrtc::PacketOptions&) override {
ADD_FAILURE() << "RtcpTransciver shouldn't send rtp packets.";
return true;
}
RtcpPacketParser* const parser_;
int num_packets_ = 0;
};
RtcpTransceiverConfig DefaultTestConfig() {
// RtcpTransceiverConfig default constructor sets default values for prod.
// Test doesn't need to support all key features: Default test config returns
// valid config with all features turned off.
static MockTransport null_transport;
RtcpTransceiverConfig config;
config.outgoing_transport = &null_transport;
config.schedule_periodic_compound_packets = false;
config.initial_report_delay_ms = 10;
config.report_period_ms = kReportPeriodMs;
return config;
}
TEST(RtcpTransceiverImplTest, NeedToStopPeriodicTaskToDestroyOnTaskQueue) {
FakeRtcpTransport transport;
TaskQueueForTest queue("rtcp");
RtcpTransceiverConfig config = DefaultTestConfig();
config.task_queue = queue.Get();
config.schedule_periodic_compound_packets = true;
config.outgoing_transport = &transport;
auto* rtcp_transceiver = new RtcpTransceiverImpl(config);
// Wait for a periodic packet.
EXPECT_TRUE(transport.WaitPacket());
rtc::Event done;
queue.PostTask([rtcp_transceiver, &done] {
rtcp_transceiver->StopPeriodicTask();
delete rtcp_transceiver;
done.Set();
});
ASSERT_TRUE(done.Wait(/*milliseconds=*/1000));
}
TEST(RtcpTransceiverImplTest, CanDestroyAfterTaskQueue) {
FakeRtcpTransport transport;
auto* queue = new TaskQueueForTest("rtcp");
RtcpTransceiverConfig config = DefaultTestConfig();
config.task_queue = queue->Get();
config.schedule_periodic_compound_packets = true;
config.outgoing_transport = &transport;
auto* rtcp_transceiver = new RtcpTransceiverImpl(config);
// Wait for a periodic packet.
EXPECT_TRUE(transport.WaitPacket());
delete queue;
delete rtcp_transceiver;
}
TEST(RtcpTransceiverImplTest, DelaysSendingFirstCompondPacket) {
TaskQueueForTest queue("rtcp");
FakeRtcpTransport transport;
RtcpTransceiverConfig config;
config.outgoing_transport = &transport;
config.initial_report_delay_ms = 10;
config.task_queue = queue.Get();
absl::optional<RtcpTransceiverImpl> rtcp_transceiver;
int64_t started_ms = rtc::TimeMillis();
queue.PostTask([&] { rtcp_transceiver.emplace(config); });
EXPECT_TRUE(transport.WaitPacket());
EXPECT_GE(rtc::TimeMillis() - started_ms, config.initial_report_delay_ms);
// Cleanup.
rtc::Event done;
queue.PostTask([&] {
rtcp_transceiver->StopPeriodicTask();
rtcp_transceiver.reset();
done.Set();
});
ASSERT_TRUE(done.Wait(kAlmostForeverMs));
}
TEST(RtcpTransceiverImplTest, PeriodicallySendsPackets) {
TaskQueueForTest queue("rtcp");
FakeRtcpTransport transport;
RtcpTransceiverConfig config;
config.outgoing_transport = &transport;
config.initial_report_delay_ms = 0;
config.report_period_ms = kReportPeriodMs;
config.task_queue = queue.Get();
absl::optional<RtcpTransceiverImpl> rtcp_transceiver;
int64_t time_just_before_1st_packet_ms = 0;
queue.PostTask([&] {
// Because initial_report_delay_ms is set to 0, time_just_before_the_packet
// should be very close to the time_of_the_packet.
time_just_before_1st_packet_ms = rtc::TimeMillis();
rtcp_transceiver.emplace(config);
});
EXPECT_TRUE(transport.WaitPacket());
EXPECT_TRUE(transport.WaitPacket());
int64_t time_just_after_2nd_packet_ms = rtc::TimeMillis();
EXPECT_GE(time_just_after_2nd_packet_ms - time_just_before_1st_packet_ms,
config.report_period_ms - 1);
// Cleanup.
rtc::Event done;
queue.PostTask([&] {
rtcp_transceiver->StopPeriodicTask();
rtcp_transceiver.reset();
done.Set();
});
ASSERT_TRUE(done.Wait(kAlmostForeverMs));
}
TEST(RtcpTransceiverImplTest, SendCompoundPacketDelaysPeriodicSendPackets) {
TaskQueueForTest queue("rtcp");
FakeRtcpTransport transport;
RtcpTransceiverConfig config;
config.outgoing_transport = &transport;
config.initial_report_delay_ms = 0;
config.report_period_ms = kReportPeriodMs;
config.task_queue = queue.Get();
absl::optional<RtcpTransceiverImpl> rtcp_transceiver;
queue.PostTask([&] { rtcp_transceiver.emplace(config); });
// Wait for first packet.
EXPECT_TRUE(transport.WaitPacket());
// Send non periodic one after half period.
rtc::Event non_periodic;
int64_t time_of_non_periodic_packet_ms = 0;
queue.PostDelayedTask(
[&] {
time_of_non_periodic_packet_ms = rtc::TimeMillis();
rtcp_transceiver->SendCompoundPacket();
non_periodic.Set();
},
config.report_period_ms / 2);
// Though non-periodic packet is scheduled just in between periodic, due to
// small period and task queue flakiness it migth end-up 1ms after next
// periodic packet. To be sure duration after non-periodic packet is tested
// wait for transport after ensuring non-periodic packet was sent.
EXPECT_TRUE(non_periodic.Wait(kAlmostForeverMs));
EXPECT_TRUE(transport.WaitPacket());
// Wait for next periodic packet.
EXPECT_TRUE(transport.WaitPacket());
int64_t time_of_last_periodic_packet_ms = rtc::TimeMillis();
EXPECT_GE(time_of_last_periodic_packet_ms - time_of_non_periodic_packet_ms,
config.report_period_ms - 1);
// Cleanup.
rtc::Event done;
queue.PostTask([&] {
rtcp_transceiver->StopPeriodicTask();
rtcp_transceiver.reset();
done.Set();
});
ASSERT_TRUE(done.Wait(kAlmostForeverMs));
}
TEST(RtcpTransceiverImplTest, SendsNoRtcpWhenNetworkStateIsDown) {
MockTransport mock_transport;
RtcpTransceiverConfig config = DefaultTestConfig();
config.initial_ready_to_send = false;
config.outgoing_transport = &mock_transport;
RtcpTransceiverImpl rtcp_transceiver(config);
EXPECT_CALL(mock_transport, SendRtcp(_, _)).Times(0);
const uint8_t raw[] = {1, 2, 3, 4};
const std::vector<uint16_t> sequence_numbers = {45, 57};
const uint32_t ssrcs[] = {123};
rtcp_transceiver.SendCompoundPacket();
rtcp_transceiver.SendRawPacket(raw);
rtcp_transceiver.SendNack(ssrcs[0], sequence_numbers);
rtcp_transceiver.SendPictureLossIndication(ssrcs[0]);
rtcp_transceiver.SendFullIntraRequest(ssrcs, true);
}
TEST(RtcpTransceiverImplTest, SendsRtcpWhenNetworkStateIsUp) {
MockTransport mock_transport;
RtcpTransceiverConfig config = DefaultTestConfig();
config.initial_ready_to_send = false;
config.outgoing_transport = &mock_transport;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SetReadyToSend(true);
EXPECT_CALL(mock_transport, SendRtcp(_, _)).Times(5);
const uint8_t raw[] = {1, 2, 3, 4};
const std::vector<uint16_t> sequence_numbers = {45, 57};
const uint32_t ssrcs[] = {123};
rtcp_transceiver.SendCompoundPacket();
rtcp_transceiver.SendRawPacket(raw);
rtcp_transceiver.SendNack(ssrcs[0], sequence_numbers);
rtcp_transceiver.SendPictureLossIndication(ssrcs[0]);
rtcp_transceiver.SendFullIntraRequest(ssrcs, true);
}
TEST(RtcpTransceiverImplTest, SendsPeriodicRtcpWhenNetworkStateIsUp) {
TaskQueueForTest queue("rtcp");
FakeRtcpTransport transport;
RtcpTransceiverConfig config = DefaultTestConfig();
config.schedule_periodic_compound_packets = true;
config.initial_ready_to_send = false;
config.outgoing_transport = &transport;
config.task_queue = queue.Get();
absl::optional<RtcpTransceiverImpl> rtcp_transceiver;
rtcp_transceiver.emplace(config);
queue.PostTask([&] { rtcp_transceiver->SetReadyToSend(true); });
EXPECT_TRUE(transport.WaitPacket());
// Cleanup.
rtc::Event done;
queue.PostTask([&] {
rtcp_transceiver->StopPeriodicTask();
rtcp_transceiver.reset();
done.Set();
});
ASSERT_TRUE(done.Wait(kAlmostForeverMs));
}
TEST(RtcpTransceiverImplTest, SendsMinimalCompoundPacket) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
config.cname = "cname";
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendCompoundPacket();
// Minimal compound RTCP packet contains sender or receiver report and sdes
// with cname.
ASSERT_GT(rtcp_parser.receiver_report()->num_packets(), 0);
EXPECT_EQ(rtcp_parser.receiver_report()->sender_ssrc(), kSenderSsrc);
ASSERT_GT(rtcp_parser.sdes()->num_packets(), 0);
ASSERT_EQ(rtcp_parser.sdes()->chunks().size(), 1u);
EXPECT_EQ(rtcp_parser.sdes()->chunks()[0].ssrc, kSenderSsrc);
EXPECT_EQ(rtcp_parser.sdes()->chunks()[0].cname, config.cname);
}
TEST(RtcpTransceiverImplTest, SendsNoRembInitially) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(transport.num_packets(), 1);
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 0);
}
TEST(RtcpTransceiverImplTest, SetRembIncludesRembInNextCompoundPacket) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SetRemb(/*bitrate_bps=*/10000, /*ssrcs=*/{54321, 64321});
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.remb()->sender_ssrc(), kSenderSsrc);
EXPECT_EQ(rtcp_parser.remb()->bitrate_bps(), 10000);
EXPECT_THAT(rtcp_parser.remb()->ssrcs(), ElementsAre(54321, 64321));
}
TEST(RtcpTransceiverImplTest, SetRembUpdatesValuesToSend) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SetRemb(/*bitrate_bps=*/10000, /*ssrcs=*/{54321, 64321});
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.remb()->bitrate_bps(), 10000);
EXPECT_THAT(rtcp_parser.remb()->ssrcs(), ElementsAre(54321, 64321));
rtcp_transceiver.SetRemb(/*bitrate_bps=*/70000, /*ssrcs=*/{67321});
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 2);
EXPECT_EQ(rtcp_parser.remb()->bitrate_bps(), 70000);
EXPECT_THAT(rtcp_parser.remb()->ssrcs(), ElementsAre(67321));
}
TEST(RtcpTransceiverImplTest, SetRembSendsImmediatelyIfSendRembOnChange) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.send_remb_on_change = true;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SetRemb(/*bitrate_bps=*/10000, /*ssrcs=*/{});
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.remb()->sender_ssrc(), kSenderSsrc);
EXPECT_EQ(rtcp_parser.remb()->bitrate_bps(), 10000);
// If there is no change, the packet is not sent immediately.
rtcp_transceiver.SetRemb(/*bitrate_bps=*/10000, /*ssrcs=*/{});
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 1);
rtcp_transceiver.SetRemb(/*bitrate_bps=*/20000, /*ssrcs=*/{});
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 2);
EXPECT_EQ(rtcp_parser.remb()->bitrate_bps(), 20000);
}
TEST(RtcpTransceiverImplTest,
SetRembSendsImmediatelyIfSendRembOnChangeReducedSize) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.send_remb_on_change = true;
config.rtcp_mode = webrtc::RtcpMode::kReducedSize;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SetRemb(/*bitrate_bps=*/10000, /*ssrcs=*/{});
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.remb()->sender_ssrc(), kSenderSsrc);
EXPECT_EQ(rtcp_parser.remb()->bitrate_bps(), 10000);
}
TEST(RtcpTransceiverImplTest, SetRembIncludesRembInAllCompoundPackets) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SetRemb(/*bitrate_bps=*/10000, /*ssrcs=*/{54321, 64321});
rtcp_transceiver.SendCompoundPacket();
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(transport.num_packets(), 2);
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 2);
}
TEST(RtcpTransceiverImplTest, SendsNoRembAfterUnset) {
const uint32_t kSenderSsrc = 12345;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SetRemb(/*bitrate_bps=*/10000, /*ssrcs=*/{54321, 64321});
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(transport.num_packets(), 1);
ASSERT_EQ(rtcp_parser.remb()->num_packets(), 1);
rtcp_transceiver.UnsetRemb();
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(transport.num_packets(), 2);
EXPECT_EQ(rtcp_parser.remb()->num_packets(), 1);
}
TEST(RtcpTransceiverImplTest, ReceiverReportUsesReceiveStatistics) {
const uint32_t kSenderSsrc = 12345;
const uint32_t kMediaSsrc = 54321;
MockReceiveStatisticsProvider receive_statistics;
std::vector<ReportBlock> report_blocks(1);
report_blocks[0].SetMediaSsrc(kMediaSsrc);
EXPECT_CALL(receive_statistics, RtcpReportBlocks(_))
.WillRepeatedly(Return(report_blocks));
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.receive_statistics = &receive_statistics;
config.schedule_periodic_compound_packets = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendCompoundPacket();
ASSERT_GT(rtcp_parser.receiver_report()->num_packets(), 0);
EXPECT_EQ(rtcp_parser.receiver_report()->sender_ssrc(), kSenderSsrc);
ASSERT_THAT(rtcp_parser.receiver_report()->report_blocks(),
SizeIs(report_blocks.size()));
EXPECT_EQ(rtcp_parser.receiver_report()->report_blocks()[0].source_ssrc(),
kMediaSsrc);
}
TEST(RtcpTransceiverImplTest, MultipleObserversOnSameSsrc) {
const uint32_t kRemoteSsrc = 12345;
StrictMock<MockMediaReceiverRtcpObserver> observer1;
StrictMock<MockMediaReceiverRtcpObserver> observer2;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc, &observer1);
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc, &observer2);
const NtpTime kRemoteNtp(0x9876543211);
const uint32_t kRemoteRtp = 0x444555;
SenderReport sr;
sr.SetSenderSsrc(kRemoteSsrc);
sr.SetNtp(kRemoteNtp);
sr.SetRtpTimestamp(kRemoteRtp);
auto raw_packet = sr.Build();
EXPECT_CALL(observer1, OnSenderReport(kRemoteSsrc, kRemoteNtp, kRemoteRtp));
EXPECT_CALL(observer2, OnSenderReport(kRemoteSsrc, kRemoteNtp, kRemoteRtp));
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest, DoesntCallsObserverAfterRemoved) {
const uint32_t kRemoteSsrc = 12345;
StrictMock<MockMediaReceiverRtcpObserver> observer1;
StrictMock<MockMediaReceiverRtcpObserver> observer2;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc, &observer1);
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc, &observer2);
SenderReport sr;
sr.SetSenderSsrc(kRemoteSsrc);
auto raw_packet = sr.Build();
rtcp_transceiver.RemoveMediaReceiverRtcpObserver(kRemoteSsrc, &observer1);
EXPECT_CALL(observer1, OnSenderReport(_, _, _)).Times(0);
EXPECT_CALL(observer2, OnSenderReport(_, _, _));
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest, CallsObserverOnSenderReportBySenderSsrc) {
const uint32_t kRemoteSsrc1 = 12345;
const uint32_t kRemoteSsrc2 = 22345;
StrictMock<MockMediaReceiverRtcpObserver> observer1;
StrictMock<MockMediaReceiverRtcpObserver> observer2;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc1, &observer1);
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc2, &observer2);
const NtpTime kRemoteNtp(0x9876543211);
const uint32_t kRemoteRtp = 0x444555;
SenderReport sr;
sr.SetSenderSsrc(kRemoteSsrc1);
sr.SetNtp(kRemoteNtp);
sr.SetRtpTimestamp(kRemoteRtp);
auto raw_packet = sr.Build();
EXPECT_CALL(observer1, OnSenderReport(kRemoteSsrc1, kRemoteNtp, kRemoteRtp));
EXPECT_CALL(observer2, OnSenderReport(_, _, _)).Times(0);
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest, CallsObserverOnByeBySenderSsrc) {
const uint32_t kRemoteSsrc1 = 12345;
const uint32_t kRemoteSsrc2 = 22345;
StrictMock<MockMediaReceiverRtcpObserver> observer1;
StrictMock<MockMediaReceiverRtcpObserver> observer2;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc1, &observer1);
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc2, &observer2);
Bye bye;
bye.SetSenderSsrc(kRemoteSsrc1);
auto raw_packet = bye.Build();
EXPECT_CALL(observer1, OnBye(kRemoteSsrc1));
EXPECT_CALL(observer2, OnBye(_)).Times(0);
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest, CallsObserverOnTargetBitrateBySenderSsrc) {
const uint32_t kRemoteSsrc1 = 12345;
const uint32_t kRemoteSsrc2 = 22345;
StrictMock<MockMediaReceiverRtcpObserver> observer1;
StrictMock<MockMediaReceiverRtcpObserver> observer2;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc1, &observer1);
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc2, &observer2);
webrtc::rtcp::TargetBitrate target_bitrate;
target_bitrate.AddTargetBitrate(0, 0, /*target_bitrate_kbps=*/10);
target_bitrate.AddTargetBitrate(0, 1, /*target_bitrate_kbps=*/20);
target_bitrate.AddTargetBitrate(1, 0, /*target_bitrate_kbps=*/40);
target_bitrate.AddTargetBitrate(1, 1, /*target_bitrate_kbps=*/80);
webrtc::rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kRemoteSsrc1);
xr.SetTargetBitrate(target_bitrate);
auto raw_packet = xr.Build();
VideoBitrateAllocation bitrate_allocation;
bitrate_allocation.SetBitrate(0, 0, /*bitrate_bps=*/10000);
bitrate_allocation.SetBitrate(0, 1, /*bitrate_bps=*/20000);
bitrate_allocation.SetBitrate(1, 0, /*bitrate_bps=*/40000);
bitrate_allocation.SetBitrate(1, 1, /*bitrate_bps=*/80000);
EXPECT_CALL(observer1, OnBitrateAllocation(kRemoteSsrc1, bitrate_allocation));
EXPECT_CALL(observer2, OnBitrateAllocation(_, _)).Times(0);
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest, SkipsIncorrectTargetBitrateEntries) {
const uint32_t kRemoteSsrc = 12345;
MockMediaReceiverRtcpObserver observer;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc, &observer);
webrtc::rtcp::TargetBitrate target_bitrate;
target_bitrate.AddTargetBitrate(0, 0, /*target_bitrate_kbps=*/10);
target_bitrate.AddTargetBitrate(0, webrtc::kMaxTemporalStreams, 20);
target_bitrate.AddTargetBitrate(webrtc::kMaxSpatialLayers, 0, 40);
webrtc::rtcp::ExtendedReports xr;
xr.SetTargetBitrate(target_bitrate);
xr.SetSenderSsrc(kRemoteSsrc);
auto raw_packet = xr.Build();
VideoBitrateAllocation expected_allocation;
expected_allocation.SetBitrate(0, 0, /*bitrate_bps=*/10000);
EXPECT_CALL(observer, OnBitrateAllocation(kRemoteSsrc, expected_allocation));
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest, CallsObserverOnByeBehindSenderReport) {
const uint32_t kRemoteSsrc = 12345;
MockMediaReceiverRtcpObserver observer;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc, &observer);
CompoundPacket compound;
SenderReport sr;
sr.SetSenderSsrc(kRemoteSsrc);
compound.Append(&sr);
Bye bye;
bye.SetSenderSsrc(kRemoteSsrc);
compound.Append(&bye);
auto raw_packet = compound.Build();
EXPECT_CALL(observer, OnBye(kRemoteSsrc));
EXPECT_CALL(observer, OnSenderReport(kRemoteSsrc, _, _));
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest, CallsObserverOnByeBehindUnknownRtcpPacket) {
const uint32_t kRemoteSsrc = 12345;
MockMediaReceiverRtcpObserver observer;
RtcpTransceiverImpl rtcp_transceiver(DefaultTestConfig());
rtcp_transceiver.AddMediaReceiverRtcpObserver(kRemoteSsrc, &observer);
CompoundPacket compound;
// Use Application-Defined rtcp packet as unknown.
webrtc::rtcp::App app;
compound.Append(&app);
Bye bye;
bye.SetSenderSsrc(kRemoteSsrc);
compound.Append(&bye);
auto raw_packet = compound.Build();
EXPECT_CALL(observer, OnBye(kRemoteSsrc));
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
}
TEST(RtcpTransceiverImplTest,
WhenSendsReceiverReportSetsLastSenderReportTimestampPerRemoteSsrc) {
const uint32_t kRemoteSsrc1 = 4321;
const uint32_t kRemoteSsrc2 = 5321;
std::vector<ReportBlock> statistics_report_blocks(2);
statistics_report_blocks[0].SetMediaSsrc(kRemoteSsrc1);
statistics_report_blocks[1].SetMediaSsrc(kRemoteSsrc2);
MockReceiveStatisticsProvider receive_statistics;
EXPECT_CALL(receive_statistics, RtcpReportBlocks(_))
.WillOnce(Return(statistics_report_blocks));
RtcpTransceiverConfig config;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.receive_statistics = &receive_statistics;
RtcpTransceiverImpl rtcp_transceiver(config);
const NtpTime kRemoteNtp(0x9876543211);
// Receive SenderReport for RemoteSsrc1, but no report for RemoteSsrc2.
SenderReport sr;
sr.SetSenderSsrc(kRemoteSsrc1);
sr.SetNtp(kRemoteNtp);
auto raw_packet = sr.Build();
rtcp_transceiver.ReceivePacket(raw_packet, /*now_us=*/0);
// Trigger sending ReceiverReport.
rtcp_transceiver.SendCompoundPacket();
EXPECT_GT(rtcp_parser.receiver_report()->num_packets(), 0);
const auto& report_blocks = rtcp_parser.receiver_report()->report_blocks();
ASSERT_EQ(report_blocks.size(), 2u);
// RtcpTransceiverImpl doesn't guarantee order of the report blocks
// match result of ReceiveStatisticsProvider::RtcpReportBlocks callback,
// but for simplicity of the test asume it is the same.
ASSERT_EQ(report_blocks[0].source_ssrc(), kRemoteSsrc1);
EXPECT_EQ(report_blocks[0].last_sr(), CompactNtp(kRemoteNtp));
ASSERT_EQ(report_blocks[1].source_ssrc(), kRemoteSsrc2);
// No matching Sender Report for kRemoteSsrc2, LastSR fields has to be 0.
EXPECT_EQ(report_blocks[1].last_sr(), 0u);
}
TEST(RtcpTransceiverImplTest,
WhenSendsReceiverReportCalculatesDelaySinceLastSenderReport) {
const uint32_t kRemoteSsrc1 = 4321;
const uint32_t kRemoteSsrc2 = 5321;
rtc::ScopedFakeClock clock;
std::vector<ReportBlock> statistics_report_blocks(2);
statistics_report_blocks[0].SetMediaSsrc(kRemoteSsrc1);
statistics_report_blocks[1].SetMediaSsrc(kRemoteSsrc2);
MockReceiveStatisticsProvider receive_statistics;
EXPECT_CALL(receive_statistics, RtcpReportBlocks(_))
.WillOnce(Return(statistics_report_blocks));
RtcpTransceiverConfig config;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.receive_statistics = &receive_statistics;
RtcpTransceiverImpl rtcp_transceiver(config);
auto receive_sender_report = [&rtcp_transceiver](uint32_t remote_ssrc) {
SenderReport sr;
sr.SetSenderSsrc(remote_ssrc);
auto raw_packet = sr.Build();
rtcp_transceiver.ReceivePacket(raw_packet, rtc::TimeMicros());
};
receive_sender_report(kRemoteSsrc1);
clock.AdvanceTime(webrtc::TimeDelta::Millis(100));
receive_sender_report(kRemoteSsrc2);
clock.AdvanceTime(webrtc::TimeDelta::Millis(100));
// Trigger ReceiverReport back.
rtcp_transceiver.SendCompoundPacket();
EXPECT_GT(rtcp_parser.receiver_report()->num_packets(), 0);
const auto& report_blocks = rtcp_parser.receiver_report()->report_blocks();
ASSERT_EQ(report_blocks.size(), 2u);
// RtcpTransceiverImpl doesn't guarantee order of the report blocks
// match result of ReceiveStatisticsProvider::RtcpReportBlocks callback,
// but for simplicity of the test asume it is the same.
ASSERT_EQ(report_blocks[0].source_ssrc(), kRemoteSsrc1);
EXPECT_EQ(CompactNtpRttToMs(report_blocks[0].delay_since_last_sr()), 200);
ASSERT_EQ(report_blocks[1].source_ssrc(), kRemoteSsrc2);
EXPECT_EQ(CompactNtpRttToMs(report_blocks[1].delay_since_last_sr()), 100);
}
TEST(RtcpTransceiverImplTest, SendsNack) {
const uint32_t kSenderSsrc = 1234;
const uint32_t kRemoteSsrc = 4321;
std::vector<uint16_t> kMissingSequenceNumbers = {34, 37, 38};
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendNack(kRemoteSsrc, kMissingSequenceNumbers);
EXPECT_EQ(rtcp_parser.nack()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.nack()->sender_ssrc(), kSenderSsrc);
EXPECT_EQ(rtcp_parser.nack()->media_ssrc(), kRemoteSsrc);
EXPECT_EQ(rtcp_parser.nack()->packet_ids(), kMissingSequenceNumbers);
}
TEST(RtcpTransceiverImplTest, RequestKeyFrameWithPictureLossIndication) {
const uint32_t kSenderSsrc = 1234;
const uint32_t kRemoteSsrc = 4321;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendPictureLossIndication(kRemoteSsrc);
EXPECT_EQ(transport.num_packets(), 1);
EXPECT_EQ(rtcp_parser.pli()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.pli()->sender_ssrc(), kSenderSsrc);
EXPECT_EQ(rtcp_parser.pli()->media_ssrc(), kRemoteSsrc);
}
TEST(RtcpTransceiverImplTest, RequestKeyFrameWithFullIntraRequest) {
const uint32_t kSenderSsrc = 1234;
const uint32_t kRemoteSsrcs[] = {4321, 5321};
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendFullIntraRequest(kRemoteSsrcs, true);
EXPECT_EQ(rtcp_parser.fir()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.fir()->sender_ssrc(), kSenderSsrc);
EXPECT_EQ(rtcp_parser.fir()->requests()[0].ssrc, kRemoteSsrcs[0]);
EXPECT_EQ(rtcp_parser.fir()->requests()[1].ssrc, kRemoteSsrcs[1]);
}
TEST(RtcpTransceiverImplTest, RequestKeyFrameWithFirIncreaseSeqNoPerSsrc) {
RtcpTransceiverConfig config;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
RtcpTransceiverImpl rtcp_transceiver(config);
const uint32_t kBothRemoteSsrcs[] = {4321, 5321};
const uint32_t kOneRemoteSsrc[] = {4321};
rtcp_transceiver.SendFullIntraRequest(kBothRemoteSsrcs, true);
ASSERT_EQ(rtcp_parser.fir()->requests()[0].ssrc, kBothRemoteSsrcs[0]);
uint8_t fir_sequence_number0 = rtcp_parser.fir()->requests()[0].seq_nr;
ASSERT_EQ(rtcp_parser.fir()->requests()[1].ssrc, kBothRemoteSsrcs[1]);
uint8_t fir_sequence_number1 = rtcp_parser.fir()->requests()[1].seq_nr;
rtcp_transceiver.SendFullIntraRequest(kOneRemoteSsrc, true);
ASSERT_EQ(rtcp_parser.fir()->requests().size(), 1u);
ASSERT_EQ(rtcp_parser.fir()->requests()[0].ssrc, kBothRemoteSsrcs[0]);
EXPECT_EQ(rtcp_parser.fir()->requests()[0].seq_nr, fir_sequence_number0 + 1);
rtcp_transceiver.SendFullIntraRequest(kBothRemoteSsrcs, true);
ASSERT_EQ(rtcp_parser.fir()->requests().size(), 2u);
ASSERT_EQ(rtcp_parser.fir()->requests()[0].ssrc, kBothRemoteSsrcs[0]);
EXPECT_EQ(rtcp_parser.fir()->requests()[0].seq_nr, fir_sequence_number0 + 2);
ASSERT_EQ(rtcp_parser.fir()->requests()[1].ssrc, kBothRemoteSsrcs[1]);
EXPECT_EQ(rtcp_parser.fir()->requests()[1].seq_nr, fir_sequence_number1 + 1);
}
TEST(RtcpTransceiverImplTest, SendFirDoesNotIncreaseSeqNoIfOldRequest) {
RtcpTransceiverConfig config;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
RtcpTransceiverImpl rtcp_transceiver(config);
const uint32_t kBothRemoteSsrcs[] = {4321, 5321};
rtcp_transceiver.SendFullIntraRequest(kBothRemoteSsrcs, true);
ASSERT_EQ(rtcp_parser.fir()->requests().size(), 2u);
ASSERT_EQ(rtcp_parser.fir()->requests()[0].ssrc, kBothRemoteSsrcs[0]);
uint8_t fir_sequence_number0 = rtcp_parser.fir()->requests()[0].seq_nr;
ASSERT_EQ(rtcp_parser.fir()->requests()[1].ssrc, kBothRemoteSsrcs[1]);
uint8_t fir_sequence_number1 = rtcp_parser.fir()->requests()[1].seq_nr;
rtcp_transceiver.SendFullIntraRequest(kBothRemoteSsrcs, false);
ASSERT_EQ(rtcp_parser.fir()->requests().size(), 2u);
ASSERT_EQ(rtcp_parser.fir()->requests()[0].ssrc, kBothRemoteSsrcs[0]);
EXPECT_EQ(rtcp_parser.fir()->requests()[0].seq_nr, fir_sequence_number0);
ASSERT_EQ(rtcp_parser.fir()->requests()[1].ssrc, kBothRemoteSsrcs[1]);
EXPECT_EQ(rtcp_parser.fir()->requests()[1].seq_nr, fir_sequence_number1);
}
TEST(RtcpTransceiverImplTest, KeyFrameRequestCreatesCompoundPacket) {
const uint32_t kRemoteSsrcs[] = {4321};
RtcpTransceiverConfig config;
// Turn periodic off to ensure sent rtcp packet is explicitly requested.
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.rtcp_mode = webrtc::RtcpMode::kCompound;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendFullIntraRequest(kRemoteSsrcs, true);
// Test sent packet is compound by expecting presense of receiver report.
EXPECT_EQ(transport.num_packets(), 1);
EXPECT_EQ(rtcp_parser.receiver_report()->num_packets(), 1);
}
TEST(RtcpTransceiverImplTest, KeyFrameRequestCreatesReducedSizePacket) {
const uint32_t kRemoteSsrcs[] = {4321};
RtcpTransceiverConfig config;
// Turn periodic off to ensure sent rtcp packet is explicitly requested.
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.rtcp_mode = webrtc::RtcpMode::kReducedSize;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendFullIntraRequest(kRemoteSsrcs, true);
// Test sent packet is reduced size by expecting absense of receiver report.
EXPECT_EQ(transport.num_packets(), 1);
EXPECT_EQ(rtcp_parser.receiver_report()->num_packets(), 0);
}
TEST(RtcpTransceiverImplTest, SendsXrRrtrWhenEnabled) {
const uint32_t kSenderSsrc = 4321;
rtc::ScopedFakeClock clock;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.non_sender_rtt_measurement = true;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendCompoundPacket();
NtpTime ntp_time_now = TimeMicrosToNtp(rtc::TimeMicros());
EXPECT_EQ(rtcp_parser.xr()->num_packets(), 1);
EXPECT_EQ(rtcp_parser.xr()->sender_ssrc(), kSenderSsrc);
ASSERT_TRUE(rtcp_parser.xr()->rrtr());
EXPECT_EQ(rtcp_parser.xr()->rrtr()->ntp(), ntp_time_now);
}
TEST(RtcpTransceiverImplTest, SendsNoXrRrtrWhenDisabled) {
RtcpTransceiverConfig config;
config.schedule_periodic_compound_packets = false;
RtcpPacketParser rtcp_parser;
RtcpParserTransport transport(&rtcp_parser);
config.outgoing_transport = &transport;
config.non_sender_rtt_measurement = false;
RtcpTransceiverImpl rtcp_transceiver(config);
rtcp_transceiver.SendCompoundPacket();
EXPECT_EQ(transport.num_packets(), 1);
// Extended reports rtcp packet might be included for another reason,
// but it shouldn't contain rrtr block.
EXPECT_FALSE(rtcp_parser.xr()->rrtr());
}
TEST(RtcpTransceiverImplTest, CalculatesRoundTripTimeOnDlrr) {
const uint32_t kSenderSsrc = 4321;
MockRtcpRttStats rtt_observer;
MockTransport null_transport;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
config.schedule_periodic_compound_packets = false;
config.outgoing_transport = &null_transport;
config.non_sender_rtt_measurement = true;
config.rtt_observer = &rtt_observer;
RtcpTransceiverImpl rtcp_transceiver(config);
int64_t time_us = 12345678;
webrtc::rtcp::ReceiveTimeInfo rti;
rti.ssrc = kSenderSsrc;
rti.last_rr = CompactNtp(TimeMicrosToNtp(time_us));
rti.delay_since_last_rr = SaturatedUsToCompactNtp(10 * 1000);
webrtc::rtcp::ExtendedReports xr;
xr.AddDlrrItem(rti);
auto raw_packet = xr.Build();
EXPECT_CALL(rtt_observer, OnRttUpdate(100 /* rtt_ms */));
rtcp_transceiver.ReceivePacket(raw_packet, time_us + 110 * 1000);
}
TEST(RtcpTransceiverImplTest, IgnoresUnknownSsrcInDlrr) {
const uint32_t kSenderSsrc = 4321;
const uint32_t kUnknownSsrc = 4322;
MockRtcpRttStats rtt_observer;
MockTransport null_transport;
RtcpTransceiverConfig config;
config.feedback_ssrc = kSenderSsrc;
config.schedule_periodic_compound_packets = false;
config.outgoing_transport = &null_transport;
config.non_sender_rtt_measurement = true;
config.rtt_observer = &rtt_observer;
RtcpTransceiverImpl rtcp_transceiver(config);
int64_t time_us = 12345678;
webrtc::rtcp::ReceiveTimeInfo rti;
rti.ssrc = kUnknownSsrc;
rti.last_rr = CompactNtp(TimeMicrosToNtp(time_us));
webrtc::rtcp::ExtendedReports xr;
xr.AddDlrrItem(rti);
auto raw_packet = xr.Build();
EXPECT_CALL(rtt_observer, OnRttUpdate(_)).Times(0);
rtcp_transceiver.ReceivePacket(raw_packet, time_us + 100000);
}
} // namespace