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webrtc/modules/rtp_rtcp/source/rtcp_receiver_unittest.cc
Danil Chapovalov 510c94cbfb Return one report block per media ssrc, ignoring sender ssrc. 
Webrtc designed to work for point-to-point topology, and thus
each rtcp_receiver handles single remote sender.

While remote sender ssrc may change, it should be ok to assume
the remote endpoint is still the same.

Bug: webrtc:12798
Change-Id: I62aebe7ac802306fc7fa17d7bf3959d6d4cca023
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/224548
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34407}
2021-07-02 14:37:16 +00:00

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/*
* Copyright (c) 2012 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_receiver.h"
#include <memory>
#include <utility>
#include "api/array_view.h"
#include "api/units/timestamp.h"
#include "api/video/video_bitrate_allocation.h"
#include "api/video/video_bitrate_allocator.h"
#include "modules/rtp_rtcp/include/report_block_data.h"
#include "modules/rtp_rtcp/mocks/mock_rtcp_bandwidth_observer.h"
#include "modules/rtp_rtcp/source/byte_io.h"
#include "modules/rtp_rtcp/source/rtcp_packet.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/rtcp_packet/extended_jitter_report.h"
#include "modules/rtp_rtcp/source/rtcp_packet/extended_reports.h"
#include "modules/rtp_rtcp/source/rtcp_packet/fir.h"
#include "modules/rtp_rtcp/source/rtcp_packet/nack.h"
#include "modules/rtp_rtcp/source/rtcp_packet/pli.h"
#include "modules/rtp_rtcp/source/rtcp_packet/rapid_resync_request.h"
#include "modules/rtp_rtcp/source/rtcp_packet/receiver_report.h"
#include "modules/rtp_rtcp/source/rtcp_packet/remb.h"
#include "modules/rtp_rtcp/source/rtcp_packet/sdes.h"
#include "modules/rtp_rtcp/source/rtcp_packet/sender_report.h"
#include "modules/rtp_rtcp/source/rtcp_packet/tmmbr.h"
#include "modules/rtp_rtcp/source/rtcp_packet/transport_feedback.h"
#include "modules/rtp_rtcp/source/time_util.h"
#include "rtc_base/arraysize.h"
#include "rtc_base/fake_clock.h"
#include "rtc_base/random.h"
#include "system_wrappers/include/ntp_time.h"
#include "test/gmock.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
using rtcp::ReceiveTimeInfo;
using ::testing::_;
using ::testing::AllOf;
using ::testing::ElementsAreArray;
using ::testing::Eq;
using ::testing::Field;
using ::testing::InSequence;
using ::testing::IsEmpty;
using ::testing::NiceMock;
using ::testing::Property;
using ::testing::SizeIs;
using ::testing::StrEq;
using ::testing::StrictMock;
using ::testing::UnorderedElementsAre;
class MockRtcpPacketTypeCounterObserver : public RtcpPacketTypeCounterObserver {
public:
MOCK_METHOD(void,
RtcpPacketTypesCounterUpdated,
(uint32_t, const RtcpPacketTypeCounter&),
(override));
};
class MockRtcpIntraFrameObserver : public RtcpIntraFrameObserver {
public:
MOCK_METHOD(void, OnReceivedIntraFrameRequest, (uint32_t), (override));
};
class MockRtcpLossNotificationObserver : public RtcpLossNotificationObserver {
public:
~MockRtcpLossNotificationObserver() override = default;
MOCK_METHOD(void,
OnReceivedLossNotification,
(uint32_t ssrc,
uint16_t seq_num_of_last_decodable,
uint16_t seq_num_of_last_received,
bool decodability_flag),
(override));
};
class MockCnameCallbackImpl : public RtcpCnameCallback {
public:
MOCK_METHOD(void, OnCname, (uint32_t, absl::string_view), (override));
};
class MockReportBlockDataObserverImpl : public ReportBlockDataObserver {
public:
MOCK_METHOD(void, OnReportBlockDataUpdated, (ReportBlockData), (override));
};
class MockTransportFeedbackObserver : public TransportFeedbackObserver {
public:
MOCK_METHOD(void, OnAddPacket, (const RtpPacketSendInfo&), (override));
MOCK_METHOD(void,
OnTransportFeedback,
(const rtcp::TransportFeedback&),
(override));
};
class MockModuleRtpRtcp : public RTCPReceiver::ModuleRtpRtcp {
public:
MOCK_METHOD(void, SetTmmbn, (std::vector<rtcp::TmmbItem>), (override));
MOCK_METHOD(void, OnRequestSendReport, (), (override));
MOCK_METHOD(void, OnReceivedNack, (const std::vector<uint16_t>&), (override));
MOCK_METHOD(void,
OnReceivedRtcpReportBlocks,
(const ReportBlockList&),
(override));
};
class MockVideoBitrateAllocationObserver
: public VideoBitrateAllocationObserver {
public:
MOCK_METHOD(void,
OnBitrateAllocationUpdated,
(const VideoBitrateAllocation& allocation),
(override));
};
// SSRC of remote peer, that sends rtcp packet to the rtcp receiver under test.
constexpr uint32_t kSenderSsrc = 0x10203;
// SSRCs of local peer, that rtcp packet addressed to.
constexpr uint32_t kReceiverMainSsrc = 0x123456;
// RtcpReceiver can accept several ssrc, e.g. regular and rtx streams.
constexpr uint32_t kReceiverExtraSsrc = 0x1234567;
// SSRCs to ignore (i.e. not configured in RtcpReceiver).
constexpr uint32_t kNotToUsSsrc = 0x654321;
constexpr uint32_t kUnknownSenderSsrc = 0x54321;
constexpr int64_t kRtcpIntervalMs = 1000;
} // namespace
struct ReceiverMocks {
ReceiverMocks() : clock(1335900000) {}
SimulatedClock clock;
// Callbacks to packet_type_counter_observer are frequent but most of the time
// are not interesting.
NiceMock<MockRtcpPacketTypeCounterObserver> packet_type_counter_observer;
StrictMock<MockRtcpBandwidthObserver> bandwidth_observer;
StrictMock<MockRtcpIntraFrameObserver> intra_frame_observer;
StrictMock<MockRtcpLossNotificationObserver> rtcp_loss_notification_observer;
StrictMock<MockTransportFeedbackObserver> transport_feedback_observer;
StrictMock<MockVideoBitrateAllocationObserver> bitrate_allocation_observer;
StrictMock<MockModuleRtpRtcp> rtp_rtcp_impl;
};
RtpRtcpInterface::Configuration DefaultConfiguration(ReceiverMocks* mocks) {
RtpRtcpInterface::Configuration config;
config.clock = &mocks->clock;
config.receiver_only = false;
config.rtcp_packet_type_counter_observer =
&mocks->packet_type_counter_observer;
config.bandwidth_callback = &mocks->bandwidth_observer;
config.intra_frame_callback = &mocks->intra_frame_observer;
config.rtcp_loss_notification_observer =
&mocks->rtcp_loss_notification_observer;
config.transport_feedback_callback = &mocks->transport_feedback_observer;
config.bitrate_allocation_observer = &mocks->bitrate_allocation_observer;
config.rtcp_report_interval_ms = kRtcpIntervalMs;
config.local_media_ssrc = kReceiverMainSsrc;
config.rtx_send_ssrc = kReceiverExtraSsrc;
return config;
}
TEST(RtcpReceiverTest, BrokenPacketIsIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
const uint8_t bad_packet[] = {0, 0, 0, 0};
EXPECT_CALL(mocks.packet_type_counter_observer, RtcpPacketTypesCounterUpdated)
.Times(0);
receiver.IncomingPacket(bad_packet);
}
TEST(RtcpReceiverTest, InvalidFeedbackPacketIsIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
// Too short feedback packet.
const uint8_t bad_packet[] = {0x81, rtcp::Rtpfb::kPacketType, 0, 0};
// TODO(danilchap): Add expectation RtcpPacketTypesCounterUpdated
// is not called once parser would be adjusted to avoid that callback on
// semi-valid packets.
receiver.IncomingPacket(bad_packet);
}
TEST(RtcpReceiverTest, InjectSrPacket) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
EXPECT_FALSE(receiver.NTP(nullptr, nullptr, nullptr, nullptr, nullptr,
nullptr, nullptr, nullptr));
int64_t now = mocks.clock.TimeInMilliseconds();
rtcp::SenderReport sr;
sr.SetSenderSsrc(kSenderSsrc);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(IsEmpty()));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(IsEmpty(), _, now));
receiver.IncomingPacket(sr.Build());
EXPECT_TRUE(receiver.NTP(nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
nullptr, nullptr));
}
TEST(RtcpReceiverTest, InjectSrPacketFromUnknownSender) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
int64_t now = mocks.clock.TimeInMilliseconds();
rtcp::SenderReport sr;
sr.SetSenderSsrc(kUnknownSenderSsrc);
// The parser will handle report blocks in Sender Report from other than their
// expected peer.
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(_, _, now));
receiver.IncomingPacket(sr.Build());
// But will not flag that he's gotten sender information.
EXPECT_FALSE(receiver.NTP(nullptr, nullptr, nullptr, nullptr, nullptr,
nullptr, nullptr, nullptr));
}
TEST(RtcpReceiverTest, InjectSrPacketCalculatesRTT) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const int64_t kRttMs = 123;
const uint32_t kDelayNtp = 0x4321;
const int64_t kDelayMs = CompactNtpRttToMs(kDelayNtp);
int64_t rtt_ms = 0;
EXPECT_EQ(-1, receiver.RTT(kSenderSsrc, &rtt_ms, nullptr, nullptr, nullptr));
uint32_t sent_ntp = CompactNtp(mocks.clock.CurrentNtpTime());
mocks.clock.AdvanceTimeMilliseconds(kRttMs + kDelayMs);
rtcp::SenderReport sr;
sr.SetSenderSsrc(kSenderSsrc);
rtcp::ReportBlock block;
block.SetMediaSsrc(kReceiverMainSsrc);
block.SetLastSr(sent_ntp);
block.SetDelayLastSr(kDelayNtp);
sr.AddReportBlock(block);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(sr.Build());
EXPECT_EQ(0, receiver.RTT(kSenderSsrc, &rtt_ms, nullptr, nullptr, nullptr));
EXPECT_NEAR(kRttMs, rtt_ms, 1);
}
TEST(RtcpReceiverTest, InjectSrPacketCalculatesNegativeRTTAsOne) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const int64_t kRttMs = -13;
const uint32_t kDelayNtp = 0x4321;
const int64_t kDelayMs = CompactNtpRttToMs(kDelayNtp);
int64_t rtt_ms = 0;
EXPECT_EQ(-1, receiver.RTT(kSenderSsrc, &rtt_ms, nullptr, nullptr, nullptr));
uint32_t sent_ntp = CompactNtp(mocks.clock.CurrentNtpTime());
mocks.clock.AdvanceTimeMilliseconds(kRttMs + kDelayMs);
rtcp::SenderReport sr;
sr.SetSenderSsrc(kSenderSsrc);
rtcp::ReportBlock block;
block.SetMediaSsrc(kReceiverMainSsrc);
block.SetLastSr(sent_ntp);
block.SetDelayLastSr(kDelayNtp);
sr.AddReportBlock(block);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(1)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(1), _, _));
receiver.IncomingPacket(sr.Build());
EXPECT_EQ(0, receiver.RTT(kSenderSsrc, &rtt_ms, nullptr, nullptr, nullptr));
EXPECT_EQ(1, rtt_ms);
}
TEST(RtcpReceiverTest,
TwoReportBlocksWithLastOneWithoutLastSrCalculatesRttForBandwidthObserver) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const int64_t kRttMs = 120;
const uint32_t kDelayNtp = 123000;
const int64_t kDelayMs = CompactNtpRttToMs(kDelayNtp);
uint32_t sent_ntp = CompactNtp(mocks.clock.CurrentNtpTime());
mocks.clock.AdvanceTimeMilliseconds(kRttMs + kDelayMs);
rtcp::SenderReport sr;
sr.SetSenderSsrc(kSenderSsrc);
rtcp::ReportBlock block;
block.SetMediaSsrc(kReceiverMainSsrc);
block.SetLastSr(sent_ntp);
block.SetDelayLastSr(kDelayNtp);
sr.AddReportBlock(block);
block.SetMediaSsrc(kReceiverExtraSsrc);
block.SetLastSr(0);
sr.AddReportBlock(block);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(2)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(2), kRttMs, _));
receiver.IncomingPacket(sr.Build());
}
TEST(RtcpReceiverTest, InjectRrPacket) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
int64_t now = mocks.clock.TimeInMilliseconds();
rtcp::ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(IsEmpty()));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(IsEmpty(), _, now));
receiver.IncomingPacket(rr.Build());
EXPECT_THAT(receiver.GetLatestReportBlockData(), IsEmpty());
}
TEST(RtcpReceiverTest, InjectRrPacketWithReportBlockNotToUsIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
int64_t now = mocks.clock.TimeInMilliseconds();
rtcp::ReportBlock rb;
rb.SetMediaSsrc(kNotToUsSsrc);
rtcp::ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
rr.AddReportBlock(rb);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(IsEmpty()));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(IsEmpty(), _, now));
receiver.IncomingPacket(rr.Build());
EXPECT_EQ(0, receiver.LastReceivedReportBlockMs());
EXPECT_THAT(receiver.GetLatestReportBlockData(), IsEmpty());
}
TEST(RtcpReceiverTest, InjectRrPacketWithOneReportBlock) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
int64_t now = mocks.clock.TimeInMilliseconds();
rtcp::ReportBlock rb;
rb.SetMediaSsrc(kReceiverMainSsrc);
rtcp::ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
rr.AddReportBlock(rb);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(1)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(1), _, now));
receiver.IncomingPacket(rr.Build());
EXPECT_EQ(now, receiver.LastReceivedReportBlockMs());
EXPECT_THAT(receiver.GetLatestReportBlockData(), SizeIs(1));
}
TEST(RtcpReceiverTest, InjectSrPacketWithOneReportBlock) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
int64_t now = mocks.clock.TimeInMilliseconds();
rtcp::ReportBlock rb;
rb.SetMediaSsrc(kReceiverMainSsrc);
rtcp::SenderReport sr;
sr.SetSenderSsrc(kSenderSsrc);
sr.AddReportBlock(rb);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(1)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(1), _, now));
receiver.IncomingPacket(sr.Build());
EXPECT_EQ(now, receiver.LastReceivedReportBlockMs());
EXPECT_THAT(receiver.GetLatestReportBlockData(), SizeIs(1));
}
TEST(RtcpReceiverTest, InjectRrPacketWithTwoReportBlocks) {
const uint16_t kSequenceNumbers[] = {10, 12423};
const uint32_t kCumLost[] = {13, 555};
const uint8_t kFracLost[] = {20, 11};
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
int64_t now = mocks.clock.TimeInMilliseconds();
rtcp::ReportBlock rb1;
rb1.SetMediaSsrc(kReceiverMainSsrc);
rb1.SetExtHighestSeqNum(kSequenceNumbers[0]);
rb1.SetFractionLost(10);
rtcp::ReportBlock rb2;
rb2.SetMediaSsrc(kReceiverExtraSsrc);
rb2.SetExtHighestSeqNum(kSequenceNumbers[1]);
rb2.SetFractionLost(0);
rtcp::ReceiverReport rr1;
rr1.SetSenderSsrc(kSenderSsrc);
rr1.AddReportBlock(rb1);
rr1.AddReportBlock(rb2);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(2)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(2), _, now));
receiver.IncomingPacket(rr1.Build());
EXPECT_EQ(now, receiver.LastReceivedReportBlockMs());
EXPECT_THAT(receiver.GetLatestReportBlockData(),
UnorderedElementsAre(
Property(&ReportBlockData::report_block,
Field(&RTCPReportBlock::fraction_lost, 0)),
Property(&ReportBlockData::report_block,
Field(&RTCPReportBlock::fraction_lost, 10))));
// Insert next receiver report with same ssrc but new values.
rtcp::ReportBlock rb3;
rb3.SetMediaSsrc(kReceiverMainSsrc);
rb3.SetExtHighestSeqNum(kSequenceNumbers[0]);
rb3.SetFractionLost(kFracLost[0]);
rb3.SetCumulativeLost(kCumLost[0]);
rtcp::ReportBlock rb4;
rb4.SetMediaSsrc(kReceiverExtraSsrc);
rb4.SetExtHighestSeqNum(kSequenceNumbers[1]);
rb4.SetFractionLost(kFracLost[1]);
rb4.SetCumulativeLost(kCumLost[1]);
rtcp::ReceiverReport rr2;
rr2.SetSenderSsrc(kSenderSsrc);
rr2.AddReportBlock(rb3);
rr2.AddReportBlock(rb4);
// Advance time to make 1st sent time and 2nd sent time different.
mocks.clock.AdvanceTimeMilliseconds(500);
now = mocks.clock.TimeInMilliseconds();
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(2)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(2), _, now));
receiver.IncomingPacket(rr2.Build());
EXPECT_THAT(
receiver.GetLatestReportBlockData(),
UnorderedElementsAre(
Property(
&ReportBlockData::report_block,
AllOf(Field(&RTCPReportBlock::source_ssrc, kReceiverMainSsrc),
Field(&RTCPReportBlock::fraction_lost, kFracLost[0]),
Field(&RTCPReportBlock::packets_lost, kCumLost[0]),
Field(&RTCPReportBlock::extended_highest_sequence_number,
kSequenceNumbers[0]))),
Property(
&ReportBlockData::report_block,
AllOf(Field(&RTCPReportBlock::source_ssrc, kReceiverExtraSsrc),
Field(&RTCPReportBlock::fraction_lost, kFracLost[1]),
Field(&RTCPReportBlock::packets_lost, kCumLost[1]),
Field(&RTCPReportBlock::extended_highest_sequence_number,
kSequenceNumbers[1])))));
}
TEST(RtcpReceiverTest,
InjectRrPacketsFromTwoRemoteSsrcsReturnsLatestReportBlock) {
const uint32_t kSenderSsrc2 = 0x20304;
const uint16_t kSequenceNumbers[] = {10, 12423};
const int32_t kCumLost[] = {13, 555};
const uint8_t kFracLost[] = {20, 11};
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::ReportBlock rb1;
rb1.SetMediaSsrc(kReceiverMainSsrc);
rb1.SetExtHighestSeqNum(kSequenceNumbers[0]);
rb1.SetFractionLost(kFracLost[0]);
rb1.SetCumulativeLost(kCumLost[0]);
rtcp::ReceiverReport rr1;
rr1.SetSenderSsrc(kSenderSsrc);
rr1.AddReportBlock(rb1);
int64_t now = mocks.clock.TimeInMilliseconds();
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(1)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(1), _, now));
receiver.IncomingPacket(rr1.Build());
EXPECT_EQ(now, receiver.LastReceivedReportBlockMs());
EXPECT_THAT(
receiver.GetLatestReportBlockData(),
ElementsAre(Property(
&ReportBlockData::report_block,
AllOf(Field(&RTCPReportBlock::source_ssrc, kReceiverMainSsrc),
Field(&RTCPReportBlock::sender_ssrc, kSenderSsrc),
Field(&RTCPReportBlock::fraction_lost, kFracLost[0]),
Field(&RTCPReportBlock::packets_lost, kCumLost[0]),
Field(&RTCPReportBlock::extended_highest_sequence_number,
kSequenceNumbers[0])))));
rtcp::ReportBlock rb2;
rb2.SetMediaSsrc(kReceiverMainSsrc);
rb2.SetExtHighestSeqNum(kSequenceNumbers[1]);
rb2.SetFractionLost(kFracLost[1]);
rb2.SetCumulativeLost(kCumLost[1]);
rtcp::ReceiverReport rr2;
rr2.SetSenderSsrc(kSenderSsrc2);
rr2.AddReportBlock(rb2);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks(SizeIs(1)));
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedRtcpReceiverReport(SizeIs(1), _, now));
receiver.IncomingPacket(rr2.Build());
EXPECT_THAT(
receiver.GetLatestReportBlockData(),
UnorderedElementsAre(
Property(
&ReportBlockData::report_block,
AllOf(Field(&RTCPReportBlock::source_ssrc, kReceiverMainSsrc),
Field(&RTCPReportBlock::sender_ssrc, kSenderSsrc2),
Field(&RTCPReportBlock::fraction_lost, kFracLost[1]),
Field(&RTCPReportBlock::packets_lost, kCumLost[1]),
Field(&RTCPReportBlock::extended_highest_sequence_number,
kSequenceNumbers[1])))));
}
TEST(RtcpReceiverTest, GetRtt) {
const uint32_t kSentCompactNtp = 0x1234;
const uint32_t kDelayCompactNtp = 0x222;
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
// No report block received.
EXPECT_EQ(-1, receiver.RTT(kSenderSsrc, nullptr, nullptr, nullptr, nullptr));
rtcp::ReportBlock rb;
rb.SetMediaSsrc(kReceiverMainSsrc);
rb.SetLastSr(kSentCompactNtp);
rb.SetDelayLastSr(kDelayCompactNtp);
rtcp::ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
rr.AddReportBlock(rb);
int64_t now = mocks.clock.TimeInMilliseconds();
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rr.Build());
EXPECT_EQ(now, receiver.LastReceivedReportBlockMs());
EXPECT_EQ(0, receiver.RTT(kSenderSsrc, nullptr, nullptr, nullptr, nullptr));
}
// Ij packets are ignored.
TEST(RtcpReceiverTest, InjectIjWithNoItem) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::ExtendedJitterReport ij;
receiver.IncomingPacket(ij.Build());
}
// App packets are ignored.
TEST(RtcpReceiverTest, InjectApp) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::App app;
app.SetSubType(30);
app.SetName(0x17a177e);
const uint8_t kData[] = {'t', 'e', 's', 't', 'd', 'a', 't', 'a'};
app.SetData(kData, sizeof(kData));
receiver.IncomingPacket(app.Build());
}
TEST(RtcpReceiverTest, InjectSdesWithOneChunk) {
ReceiverMocks mocks;
MockCnameCallbackImpl callback;
RtpRtcpInterface::Configuration config = DefaultConfiguration(&mocks);
config.rtcp_cname_callback = &callback;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const char kCname[] = "alice@host";
rtcp::Sdes sdes;
sdes.AddCName(kSenderSsrc, kCname);
EXPECT_CALL(callback, OnCname(kSenderSsrc, StrEq(kCname)));
receiver.IncomingPacket(sdes.Build());
}
TEST(RtcpReceiverTest, InjectByePacket_RemovesReportBlocks) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::ReportBlock rb1;
rb1.SetMediaSsrc(kReceiverMainSsrc);
rtcp::ReportBlock rb2;
rb2.SetMediaSsrc(kReceiverExtraSsrc);
rtcp::ReceiverReport rr;
rr.SetSenderSsrc(kSenderSsrc);
rr.AddReportBlock(rb1);
rr.AddReportBlock(rb2);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rr.Build());
EXPECT_THAT(receiver.GetLatestReportBlockData(), SizeIs(2));
// Verify that BYE removes the report blocks.
rtcp::Bye bye;
bye.SetSenderSsrc(kSenderSsrc);
receiver.IncomingPacket(bye.Build());
EXPECT_THAT(receiver.GetLatestReportBlockData(), IsEmpty());
// Inject packet again.
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rr.Build());
EXPECT_THAT(receiver.GetLatestReportBlockData(), SizeIs(2));
}
TEST(RtcpReceiverTest, InjectByePacketRemovesReferenceTimeInfo) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
rtcp::Rrtr rrtr;
rrtr.SetNtp(NtpTime(0x10203, 0x40506));
xr.SetRrtr(rrtr);
receiver.IncomingPacket(xr.Build());
rtcp::Bye bye;
bye.SetSenderSsrc(kSenderSsrc);
receiver.IncomingPacket(bye.Build());
EXPECT_THAT(receiver.ConsumeReceivedXrReferenceTimeInfo(), IsEmpty());
}
TEST(RtcpReceiverTest, InjectPliPacket) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::Pli pli;
pli.SetMediaSsrc(kReceiverMainSsrc);
EXPECT_CALL(
mocks.packet_type_counter_observer,
RtcpPacketTypesCounterUpdated(
kReceiverMainSsrc, Field(&RtcpPacketTypeCounter::pli_packets, 1)));
EXPECT_CALL(mocks.intra_frame_observer,
OnReceivedIntraFrameRequest(kReceiverMainSsrc));
receiver.IncomingPacket(pli.Build());
}
TEST(RtcpReceiverTest, PliPacketNotToUsIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::Pli pli;
pli.SetMediaSsrc(kNotToUsSsrc);
EXPECT_CALL(
mocks.packet_type_counter_observer,
RtcpPacketTypesCounterUpdated(
kReceiverMainSsrc, Field(&RtcpPacketTypeCounter::pli_packets, 0)));
EXPECT_CALL(mocks.intra_frame_observer, OnReceivedIntraFrameRequest).Times(0);
receiver.IncomingPacket(pli.Build());
}
TEST(RtcpReceiverTest, InjectFirPacket) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::Fir fir;
fir.AddRequestTo(kReceiverMainSsrc, 13);
EXPECT_CALL(
mocks.packet_type_counter_observer,
RtcpPacketTypesCounterUpdated(
kReceiverMainSsrc, Field(&RtcpPacketTypeCounter::fir_packets, 1)));
EXPECT_CALL(mocks.intra_frame_observer,
OnReceivedIntraFrameRequest(kReceiverMainSsrc));
receiver.IncomingPacket(fir.Build());
}
TEST(RtcpReceiverTest, FirPacketNotToUsIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::Fir fir;
fir.AddRequestTo(kNotToUsSsrc, 13);
EXPECT_CALL(mocks.intra_frame_observer, OnReceivedIntraFrameRequest).Times(0);
receiver.IncomingPacket(fir.Build());
}
TEST(RtcpReceiverTest, ExtendedReportsPacketWithZeroReportBlocksIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
receiver.IncomingPacket(xr.Build());
}
TEST(RtcpReceiverTest, InjectExtendedReportsReceiverReferenceTimePacket) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const NtpTime kNtp(0x10203, 0x40506);
rtcp::Rrtr rrtr;
rrtr.SetNtp(kNtp);
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.SetRrtr(rrtr);
std::vector<rtcp::ReceiveTimeInfo> last_xr_rtis =
receiver.ConsumeReceivedXrReferenceTimeInfo();
EXPECT_THAT(last_xr_rtis, IsEmpty());
receiver.IncomingPacket(xr.Build());
last_xr_rtis = receiver.ConsumeReceivedXrReferenceTimeInfo();
ASSERT_THAT(last_xr_rtis, SizeIs(1));
EXPECT_EQ(kSenderSsrc, last_xr_rtis[0].ssrc);
EXPECT_EQ(CompactNtp(kNtp), last_xr_rtis[0].last_rr);
EXPECT_EQ(0U, last_xr_rtis[0].delay_since_last_rr);
}
TEST(RtcpReceiverTest, ExtendedReportsDlrrPacketNotToUsIgnored) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
// Allow calculate rtt using dlrr/rrtr, simulating media receiver side.
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.AddDlrrItem(ReceiveTimeInfo(kNotToUsSsrc, 0x12345, 0x67890));
receiver.IncomingPacket(xr.Build());
int64_t rtt_ms = 0;
EXPECT_FALSE(receiver.GetAndResetXrRrRtt(&rtt_ms));
}
TEST(RtcpReceiverTest, InjectExtendedReportsDlrrPacketWithSubBlock) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint32_t kLastRR = 0x12345;
const uint32_t kDelay = 0x23456;
int64_t rtt_ms = 0;
EXPECT_FALSE(receiver.GetAndResetXrRrRtt(&rtt_ms));
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc, kLastRR, kDelay));
receiver.IncomingPacket(xr.Build());
uint32_t compact_ntp_now = CompactNtp(mocks.clock.CurrentNtpTime());
EXPECT_TRUE(receiver.GetAndResetXrRrRtt(&rtt_ms));
uint32_t rtt_ntp = compact_ntp_now - kDelay - kLastRR;
EXPECT_NEAR(CompactNtpRttToMs(rtt_ntp), rtt_ms, 1);
}
TEST(RtcpReceiverTest, InjectExtendedReportsDlrrPacketWithMultipleSubBlocks) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint32_t kLastRR = 0x12345;
const uint32_t kDelay = 0x56789;
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc, kLastRR, kDelay));
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc + 1, 0x12345, 0x67890));
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc + 2, 0x12345, 0x67890));
receiver.IncomingPacket(xr.Build());
uint32_t compact_ntp_now = CompactNtp(mocks.clock.CurrentNtpTime());
int64_t rtt_ms = 0;
EXPECT_TRUE(receiver.GetAndResetXrRrRtt(&rtt_ms));
uint32_t rtt_ntp = compact_ntp_now - kDelay - kLastRR;
EXPECT_NEAR(CompactNtpRttToMs(rtt_ntp), rtt_ms, 1);
}
TEST(RtcpReceiverTest, InjectExtendedReportsPacketWithMultipleReportBlocks) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::Rrtr rrtr;
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.SetRrtr(rrtr);
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc, 0x12345, 0x67890));
receiver.IncomingPacket(xr.Build());
std::vector<rtcp::ReceiveTimeInfo> last_xr_rtis =
receiver.ConsumeReceivedXrReferenceTimeInfo();
EXPECT_THAT(last_xr_rtis, SizeIs(1));
int64_t rtt_ms = 0;
EXPECT_TRUE(receiver.GetAndResetXrRrRtt(&rtt_ms));
}
TEST(RtcpReceiverTest, InjectExtendedReportsPacketWithUnknownReportBlock) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::Rrtr rrtr;
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.SetRrtr(rrtr);
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc, 0x12345, 0x67890));
rtc::Buffer packet = xr.Build();
// Modify the DLRR block to have an unsupported block type, from 5 to 6.
ASSERT_EQ(5, packet.data()[20]);
packet.data()[20] = 6;
receiver.IncomingPacket(packet);
// Validate Rrtr was received and processed.
std::vector<rtcp::ReceiveTimeInfo> last_xr_rtis =
receiver.ConsumeReceivedXrReferenceTimeInfo();
EXPECT_THAT(last_xr_rtis, SizeIs(1));
// Validate Dlrr report wasn't processed.
int64_t rtt_ms = 0;
EXPECT_FALSE(receiver.GetAndResetXrRrRtt(&rtt_ms));
}
TEST(RtcpReceiverTest, TestExtendedReportsRrRttInitiallyFalse) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
int64_t rtt_ms;
EXPECT_FALSE(receiver.GetAndResetXrRrRtt(&rtt_ms));
}
TEST(RtcpReceiverTest, RttCalculatedAfterExtendedReportsDlrr) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
Random rand(0x0123456789abcdef);
const int64_t kRttMs = rand.Rand(1, 9 * 3600 * 1000);
const uint32_t kDelayNtp = rand.Rand(0, 0x7fffffff);
const int64_t kDelayMs = CompactNtpRttToMs(kDelayNtp);
NtpTime now = mocks.clock.CurrentNtpTime();
uint32_t sent_ntp = CompactNtp(now);
mocks.clock.AdvanceTimeMilliseconds(kRttMs + kDelayMs);
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc, sent_ntp, kDelayNtp));
receiver.IncomingPacket(xr.Build());
int64_t rtt_ms = 0;
EXPECT_TRUE(receiver.GetAndResetXrRrRtt(&rtt_ms));
EXPECT_NEAR(kRttMs, rtt_ms, 1);
}
TEST(RtcpReceiverTest, XrDlrrCalculatesNegativeRttAsOne) {
ReceiverMocks mocks;
auto config = DefaultConfiguration(&mocks);
config.non_sender_rtt_measurement = true;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
Random rand(0x0123456789abcdef);
const int64_t kRttMs = rand.Rand(-3600 * 1000, -1);
const uint32_t kDelayNtp = rand.Rand(0, 0x7fffffff);
const int64_t kDelayMs = CompactNtpRttToMs(kDelayNtp);
NtpTime now = mocks.clock.CurrentNtpTime();
uint32_t sent_ntp = CompactNtp(now);
mocks.clock.AdvanceTimeMilliseconds(kRttMs + kDelayMs);
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.AddDlrrItem(ReceiveTimeInfo(kReceiverMainSsrc, sent_ntp, kDelayNtp));
receiver.IncomingPacket(xr.Build());
int64_t rtt_ms = 0;
EXPECT_TRUE(receiver.GetAndResetXrRrRtt(&rtt_ms));
EXPECT_EQ(1, rtt_ms);
}
TEST(RtcpReceiverTest, ConsumeReceivedXrReferenceTimeInfoInitiallyEmpty) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
EXPECT_THAT(receiver.ConsumeReceivedXrReferenceTimeInfo(), IsEmpty());
}
TEST(RtcpReceiverTest, ConsumeReceivedXrReferenceTimeInfo) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const NtpTime kNtp(0x10203, 0x40506);
const uint32_t kNtpMid = CompactNtp(kNtp);
rtcp::Rrtr rrtr;
rrtr.SetNtp(kNtp);
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
xr.SetRrtr(rrtr);
receiver.IncomingPacket(xr.Build());
mocks.clock.AdvanceTimeMilliseconds(1000);
std::vector<rtcp::ReceiveTimeInfo> last_xr_rtis =
receiver.ConsumeReceivedXrReferenceTimeInfo();
ASSERT_THAT(last_xr_rtis, SizeIs(1));
EXPECT_EQ(kSenderSsrc, last_xr_rtis[0].ssrc);
EXPECT_EQ(kNtpMid, last_xr_rtis[0].last_rr);
EXPECT_EQ(65536U, last_xr_rtis[0].delay_since_last_rr);
}
TEST(RtcpReceiverTest,
ReceivedRrtrFromSameSsrcUpdatesReceivedReferenceTimeInfo) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const NtpTime kNtp1(0x10203, 0x40506);
const NtpTime kNtp2(0x11223, 0x44556);
const int64_t kDelayMs = 2000;
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(kSenderSsrc);
rtcp::Rrtr rrtr1;
rrtr1.SetNtp(kNtp1);
xr.SetRrtr(rrtr1);
receiver.IncomingPacket(xr.Build());
mocks.clock.AdvanceTimeMilliseconds(kDelayMs);
rtcp::Rrtr rrtr2;
rrtr2.SetNtp(kNtp2);
xr.SetRrtr(rrtr2);
receiver.IncomingPacket(xr.Build());
mocks.clock.AdvanceTimeMilliseconds(kDelayMs);
std::vector<rtcp::ReceiveTimeInfo> last_xr_rtis =
receiver.ConsumeReceivedXrReferenceTimeInfo();
ASSERT_THAT(last_xr_rtis, SizeIs(1));
EXPECT_EQ(kSenderSsrc, last_xr_rtis[0].ssrc);
EXPECT_EQ(CompactNtp(kNtp2), last_xr_rtis[0].last_rr);
EXPECT_EQ(kDelayMs * 65536 / 1000, last_xr_rtis[0].delay_since_last_rr);
}
TEST(RtcpReceiverTest, StoresLastReceivedRrtrPerSsrc) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const size_t kNumBufferedReports = 1;
const size_t kNumReports =
rtcp::ExtendedReports::kMaxNumberOfDlrrItems + kNumBufferedReports;
for (size_t i = 0; i < kNumReports; ++i) {
rtcp::ExtendedReports xr;
xr.SetSenderSsrc(i * 100);
rtcp::Rrtr rrtr;
rrtr.SetNtp(NtpTime(i * 200, i * 300));
xr.SetRrtr(rrtr);
receiver.IncomingPacket(xr.Build());
mocks.clock.AdvanceTimeMilliseconds(1000);
}
std::vector<rtcp::ReceiveTimeInfo> last_xr_rtis =
receiver.ConsumeReceivedXrReferenceTimeInfo();
ASSERT_THAT(last_xr_rtis,
SizeIs(rtcp::ExtendedReports::kMaxNumberOfDlrrItems));
for (size_t i = 0; i < rtcp::ExtendedReports::kMaxNumberOfDlrrItems; ++i) {
EXPECT_EQ(i * 100, last_xr_rtis[i].ssrc);
EXPECT_EQ(CompactNtp(NtpTime(i * 200, i * 300)), last_xr_rtis[i].last_rr);
EXPECT_EQ(65536U * (kNumReports - i), last_xr_rtis[i].delay_since_last_rr);
}
last_xr_rtis = receiver.ConsumeReceivedXrReferenceTimeInfo();
ASSERT_THAT(last_xr_rtis, SizeIs(kNumBufferedReports));
}
TEST(RtcpReceiverTest, ReceiveReportTimeout) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint16_t kSequenceNumber = 1234;
mocks.clock.AdvanceTimeMilliseconds(3 * kRtcpIntervalMs);
// No RR received, shouldn't trigger a timeout.
EXPECT_FALSE(receiver.RtcpRrTimeout());
EXPECT_FALSE(receiver.RtcpRrSequenceNumberTimeout());
// Add a RR and advance the clock just enough to not trigger a timeout.
rtcp::ReportBlock rb1;
rb1.SetMediaSsrc(kReceiverMainSsrc);
rb1.SetExtHighestSeqNum(kSequenceNumber);
rtcp::ReceiverReport rr1;
rr1.SetSenderSsrc(kSenderSsrc);
rr1.AddReportBlock(rb1);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rr1.Build());
mocks.clock.AdvanceTimeMilliseconds(3 * kRtcpIntervalMs - 1);
EXPECT_FALSE(receiver.RtcpRrTimeout());
EXPECT_FALSE(receiver.RtcpRrSequenceNumberTimeout());
// Add a RR with the same extended max as the previous RR to trigger a
// sequence number timeout, but not a RR timeout.
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rr1.Build());
mocks.clock.AdvanceTimeMilliseconds(2);
EXPECT_FALSE(receiver.RtcpRrTimeout());
EXPECT_TRUE(receiver.RtcpRrSequenceNumberTimeout());
// Advance clock enough to trigger an RR timeout too.
mocks.clock.AdvanceTimeMilliseconds(3 * kRtcpIntervalMs);
EXPECT_TRUE(receiver.RtcpRrTimeout());
// We should only get one timeout even though we still haven't received a new
// RR.
EXPECT_FALSE(receiver.RtcpRrTimeout());
EXPECT_FALSE(receiver.RtcpRrSequenceNumberTimeout());
// Add a new RR with increase sequence number to reset timers.
rtcp::ReportBlock rb2;
rb2.SetMediaSsrc(kReceiverMainSsrc);
rb2.SetExtHighestSeqNum(kSequenceNumber + 1);
rtcp::ReceiverReport rr2;
rr2.SetSenderSsrc(kSenderSsrc);
rr2.AddReportBlock(rb2);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rr2.Build());
EXPECT_FALSE(receiver.RtcpRrTimeout());
EXPECT_FALSE(receiver.RtcpRrSequenceNumberTimeout());
// Verify we can get a timeout again once we've received new RR.
mocks.clock.AdvanceTimeMilliseconds(2 * kRtcpIntervalMs);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rr2.Build());
mocks.clock.AdvanceTimeMilliseconds(kRtcpIntervalMs + 1);
EXPECT_FALSE(receiver.RtcpRrTimeout());
EXPECT_TRUE(receiver.RtcpRrSequenceNumberTimeout());
mocks.clock.AdvanceTimeMilliseconds(2 * kRtcpIntervalMs);
EXPECT_TRUE(receiver.RtcpRrTimeout());
}
TEST(RtcpReceiverTest, TmmbrReceivedWithNoIncomingPacket) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
EXPECT_THAT(receiver.TmmbrReceived(), IsEmpty());
}
TEST(RtcpReceiverTest, TmmbrPacketAccepted) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint32_t kBitrateBps = 30000;
auto tmmbr = std::make_unique<rtcp::Tmmbr>();
tmmbr->SetSenderSsrc(kSenderSsrc);
tmmbr->AddTmmbr(rtcp::TmmbItem(kReceiverMainSsrc, kBitrateBps, 0));
auto sr = std::make_unique<rtcp::SenderReport>();
sr->SetSenderSsrc(kSenderSsrc);
rtcp::CompoundPacket compound;
compound.Append(std::move(sr));
compound.Append(std::move(tmmbr));
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.rtp_rtcp_impl, SetTmmbn(SizeIs(1)));
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedEstimatedBitrate(kBitrateBps));
receiver.IncomingPacket(compound.Build());
std::vector<rtcp::TmmbItem> tmmbr_received = receiver.TmmbrReceived();
ASSERT_EQ(1u, tmmbr_received.size());
EXPECT_EQ(kBitrateBps, tmmbr_received[0].bitrate_bps());
EXPECT_EQ(kSenderSsrc, tmmbr_received[0].ssrc());
}
TEST(RtcpReceiverTest, TmmbrPacketNotForUsIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint32_t kBitrateBps = 30000;
auto tmmbr = std::make_unique<rtcp::Tmmbr>();
tmmbr->SetSenderSsrc(kSenderSsrc);
tmmbr->AddTmmbr(rtcp::TmmbItem(kNotToUsSsrc, kBitrateBps, 0));
auto sr = std::make_unique<rtcp::SenderReport>();
sr->SetSenderSsrc(kSenderSsrc);
rtcp::CompoundPacket compound;
compound.Append(std::move(sr));
compound.Append(std::move(tmmbr));
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedEstimatedBitrate).Times(0);
receiver.IncomingPacket(compound.Build());
EXPECT_EQ(0u, receiver.TmmbrReceived().size());
}
TEST(RtcpReceiverTest, TmmbrPacketZeroRateIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
auto tmmbr = std::make_unique<rtcp::Tmmbr>();
tmmbr->SetSenderSsrc(kSenderSsrc);
tmmbr->AddTmmbr(rtcp::TmmbItem(kReceiverMainSsrc, 0, 0));
auto sr = std::make_unique<rtcp::SenderReport>();
sr->SetSenderSsrc(kSenderSsrc);
rtcp::CompoundPacket compound;
compound.Append(std::move(sr));
compound.Append(std::move(tmmbr));
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedEstimatedBitrate).Times(0);
receiver.IncomingPacket(compound.Build());
EXPECT_EQ(0u, receiver.TmmbrReceived().size());
}
TEST(RtcpReceiverTest, TmmbrThreeConstraintsTimeOut) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
// Inject 3 packets "from" kSenderSsrc, kSenderSsrc+1, kSenderSsrc+2.
// The times of arrival are starttime + 0, starttime + 5 and starttime + 10.
for (uint32_t ssrc = kSenderSsrc; ssrc < kSenderSsrc + 3; ++ssrc) {
auto tmmbr = std::make_unique<rtcp::Tmmbr>();
tmmbr->SetSenderSsrc(ssrc);
tmmbr->AddTmmbr(rtcp::TmmbItem(kReceiverMainSsrc, 30000, 0));
auto sr = std::make_unique<rtcp::SenderReport>();
sr->SetSenderSsrc(ssrc);
rtcp::CompoundPacket compound;
compound.Append(std::move(sr));
compound.Append(std::move(tmmbr));
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.rtp_rtcp_impl, SetTmmbn);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedEstimatedBitrate);
receiver.IncomingPacket(compound.Build());
// 5 seconds between each packet.
mocks.clock.AdvanceTimeMilliseconds(5000);
}
// It is now starttime + 15.
EXPECT_THAT(receiver.TmmbrReceived(),
AllOf(SizeIs(3),
Each(Property(&rtcp::TmmbItem::bitrate_bps, Eq(30'000U)))));
// We expect the timeout to be 25 seconds. Advance the clock by 12
// seconds, timing out the first packet.
mocks.clock.AdvanceTimeMilliseconds(12000);
EXPECT_THAT(receiver.TmmbrReceived(),
UnorderedElementsAre(
Property(&rtcp::TmmbItem::ssrc, Eq(kSenderSsrc + 1)),
Property(&rtcp::TmmbItem::ssrc, Eq(kSenderSsrc + 2))));
}
TEST(RtcpReceiverTest,
VerifyBlockAndTimestampObtainedFromReportBlockDataObserver) {
ReceiverMocks mocks;
MockReportBlockDataObserverImpl observer;
RtpRtcpInterface::Configuration config = DefaultConfiguration(&mocks);
config.report_block_data_observer = &observer;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint8_t kFractionLoss = 3;
const uint32_t kCumulativeLoss = 7;
const uint32_t kJitter = 9;
const uint16_t kSequenceNumber = 1234;
const int64_t kUtcNowUs = 42;
// The "report_block_timestamp_utc_us" is obtained from the global UTC clock
// (not the simulcated |mocks.clock|) and requires a scoped fake clock.
rtc::ScopedFakeClock fake_clock;
fake_clock.SetTime(Timestamp::Micros(kUtcNowUs));
rtcp::ReportBlock rtcp_block;
rtcp_block.SetMediaSsrc(kReceiverMainSsrc);
rtcp_block.SetExtHighestSeqNum(kSequenceNumber);
rtcp_block.SetFractionLost(kFractionLoss);
rtcp_block.SetCumulativeLost(kCumulativeLoss);
rtcp_block.SetJitter(kJitter);
rtcp::ReceiverReport rtcp_report;
rtcp_report.SetSenderSsrc(kSenderSsrc);
rtcp_report.AddReportBlock(rtcp_block);
EXPECT_CALL(observer, OnReportBlockDataUpdated)
.WillOnce([&](ReportBlockData report_block_data) {
const auto& report_block = report_block_data.report_block();
EXPECT_EQ(rtcp_block.source_ssrc(), report_block.source_ssrc);
EXPECT_EQ(kSenderSsrc, report_block.sender_ssrc);
EXPECT_EQ(rtcp_block.fraction_lost(), report_block.fraction_lost);
EXPECT_EQ(rtcp_block.cumulative_lost_signed(),
report_block.packets_lost);
EXPECT_EQ(rtcp_block.extended_high_seq_num(),
report_block.extended_highest_sequence_number);
EXPECT_EQ(rtcp_block.jitter(), report_block.jitter);
EXPECT_EQ(kUtcNowUs, report_block_data.report_block_timestamp_utc_us());
// No RTT is calculated in this test.
EXPECT_EQ(0u, report_block_data.num_rtts());
});
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rtcp_report.Build());
}
TEST(RtcpReceiverTest, VerifyRttObtainedFromReportBlockDataObserver) {
ReceiverMocks mocks;
MockReportBlockDataObserverImpl observer;
RtpRtcpInterface::Configuration config = DefaultConfiguration(&mocks);
config.report_block_data_observer = &observer;
RTCPReceiver receiver(config, &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const int64_t kRttMs = 120;
const uint32_t kDelayNtp = 123000;
const int64_t kDelayMs = CompactNtpRttToMs(kDelayNtp);
uint32_t sent_ntp = CompactNtp(mocks.clock.CurrentNtpTime());
mocks.clock.AdvanceTimeMilliseconds(kRttMs + kDelayMs);
rtcp::SenderReport sr;
sr.SetSenderSsrc(kSenderSsrc);
rtcp::ReportBlock block;
block.SetMediaSsrc(kReceiverMainSsrc);
block.SetLastSr(sent_ntp);
block.SetDelayLastSr(kDelayNtp);
sr.AddReportBlock(block);
block.SetMediaSsrc(kReceiverExtraSsrc);
block.SetLastSr(0);
sr.AddReportBlock(block);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
InSequence sequence;
EXPECT_CALL(observer, OnReportBlockDataUpdated)
.WillOnce([&](ReportBlockData report_block_data) {
EXPECT_EQ(kReceiverMainSsrc,
report_block_data.report_block().source_ssrc);
EXPECT_EQ(1u, report_block_data.num_rtts());
EXPECT_EQ(kRttMs, report_block_data.min_rtt_ms());
EXPECT_EQ(kRttMs, report_block_data.max_rtt_ms());
EXPECT_EQ(kRttMs, report_block_data.sum_rtt_ms());
EXPECT_EQ(kRttMs, report_block_data.last_rtt_ms());
});
EXPECT_CALL(observer, OnReportBlockDataUpdated)
.WillOnce([](ReportBlockData report_block_data) {
EXPECT_EQ(kReceiverExtraSsrc,
report_block_data.report_block().source_ssrc);
EXPECT_EQ(0u, report_block_data.num_rtts());
});
receiver.IncomingPacket(sr.Build());
}
TEST(RtcpReceiverTest, GetReportBlockDataAfterOneReportBlock) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint16_t kSequenceNumber = 1234;
rtcp::ReportBlock rtcp_block;
rtcp_block.SetMediaSsrc(kReceiverMainSsrc);
rtcp_block.SetExtHighestSeqNum(kSequenceNumber);
rtcp::ReceiverReport rtcp_report;
rtcp_report.SetSenderSsrc(kSenderSsrc);
rtcp_report.AddReportBlock(rtcp_block);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rtcp_report.Build());
auto report_block_datas = receiver.GetLatestReportBlockData();
ASSERT_THAT(report_block_datas, SizeIs(1));
EXPECT_EQ(kReceiverMainSsrc,
report_block_datas[0].report_block().source_ssrc);
EXPECT_EQ(
kSequenceNumber,
report_block_datas[0].report_block().extended_highest_sequence_number);
}
TEST(RtcpReceiverTest, GetReportBlockDataAfterTwoReportBlocksOfSameSsrc) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint16_t kSequenceNumber1 = 1234;
const uint16_t kSequenceNumber2 = 1235;
rtcp::ReportBlock rtcp_block1;
rtcp_block1.SetMediaSsrc(kReceiverMainSsrc);
rtcp_block1.SetExtHighestSeqNum(kSequenceNumber1);
rtcp::ReceiverReport rtcp_report1;
rtcp_report1.SetSenderSsrc(kSenderSsrc);
rtcp_report1.AddReportBlock(rtcp_block1);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rtcp_report1.Build());
// Inject a report block with an increased the sequence number for the same
// source SSRC.
rtcp::ReportBlock rtcp_block2;
rtcp_block2.SetMediaSsrc(kReceiverMainSsrc);
rtcp_block2.SetExtHighestSeqNum(kSequenceNumber2);
rtcp::ReceiverReport rtcp_report2;
rtcp_report2.SetSenderSsrc(kSenderSsrc);
rtcp_report2.AddReportBlock(rtcp_block2);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rtcp_report2.Build());
// Only the latest block should be returned.
auto report_block_datas = receiver.GetLatestReportBlockData();
ASSERT_THAT(report_block_datas, SizeIs(1));
EXPECT_EQ(kReceiverMainSsrc,
report_block_datas[0].report_block().source_ssrc);
EXPECT_EQ(
kSequenceNumber2,
report_block_datas[0].report_block().extended_highest_sequence_number);
}
TEST(RtcpReceiverTest, GetReportBlockDataAfterTwoReportBlocksOfDifferentSsrcs) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint16_t kSequenceNumber1 = 1234;
const uint16_t kSequenceNumber2 = 42;
rtcp::ReportBlock rtcp_block1;
rtcp_block1.SetMediaSsrc(kReceiverMainSsrc);
rtcp_block1.SetExtHighestSeqNum(kSequenceNumber1);
rtcp::ReceiverReport rtcp_report1;
rtcp_report1.SetSenderSsrc(kSenderSsrc);
rtcp_report1.AddReportBlock(rtcp_block1);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rtcp_report1.Build());
// Inject a report block for a different source SSRC.
rtcp::ReportBlock rtcp_block2;
rtcp_block2.SetMediaSsrc(kReceiverExtraSsrc);
rtcp_block2.SetExtHighestSeqNum(kSequenceNumber2);
rtcp::ReceiverReport rtcp_report2;
rtcp_report2.SetSenderSsrc(kSenderSsrc);
rtcp_report2.AddReportBlock(rtcp_block2);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnReceivedRtcpReportBlocks);
EXPECT_CALL(mocks.bandwidth_observer, OnReceivedRtcpReceiverReport);
receiver.IncomingPacket(rtcp_report2.Build());
// Both report blocks should be returned.
auto report_block_datas = receiver.GetLatestReportBlockData();
ASSERT_THAT(report_block_datas, SizeIs(2));
EXPECT_EQ(kReceiverMainSsrc,
report_block_datas[0].report_block().source_ssrc);
EXPECT_EQ(
kSequenceNumber1,
report_block_datas[0].report_block().extended_highest_sequence_number);
EXPECT_EQ(kReceiverExtraSsrc,
report_block_datas[1].report_block().source_ssrc);
EXPECT_EQ(
kSequenceNumber2,
report_block_datas[1].report_block().extended_highest_sequence_number);
}
TEST(RtcpReceiverTest, ReceivesTransportFeedback) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::TransportFeedback packet;
packet.SetMediaSsrc(kReceiverMainSsrc);
packet.SetSenderSsrc(kSenderSsrc);
packet.SetBase(1, 1000);
packet.AddReceivedPacket(1, 1000);
EXPECT_CALL(
mocks.transport_feedback_observer,
OnTransportFeedback(AllOf(
Property(&rtcp::TransportFeedback::media_ssrc, kReceiverMainSsrc),
Property(&rtcp::TransportFeedback::sender_ssrc, kSenderSsrc))));
receiver.IncomingPacket(packet.Build());
}
TEST(RtcpReceiverTest, ReceivesRemb) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint32_t kBitrateBps = 500000;
rtcp::Remb remb;
remb.SetSenderSsrc(kSenderSsrc);
remb.SetBitrateBps(kBitrateBps);
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedEstimatedBitrate(kBitrateBps));
receiver.IncomingPacket(remb.Build());
}
TEST(RtcpReceiverTest, HandlesInvalidTransportFeedback) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
// Send a compound packet with a TransportFeedback followed by something else.
auto packet = std::make_unique<rtcp::TransportFeedback>();
packet->SetMediaSsrc(kReceiverMainSsrc);
packet->SetSenderSsrc(kSenderSsrc);
packet->SetBase(1, 1000);
packet->AddReceivedPacket(1, 1000);
static uint32_t kBitrateBps = 50000;
auto remb = std::make_unique<rtcp::Remb>();
remb->SetSenderSsrc(kSenderSsrc);
remb->SetBitrateBps(kBitrateBps);
rtcp::CompoundPacket compound;
compound.Append(std::move(packet));
compound.Append(std::move(remb));
rtc::Buffer built_packet = compound.Build();
// Modify the TransportFeedback packet so that it is invalid.
const size_t kStatusCountOffset = 14;
ByteWriter<uint16_t>::WriteBigEndian(&built_packet.data()[kStatusCountOffset],
42);
// Stress no transport feedback is expected.
EXPECT_CALL(mocks.transport_feedback_observer, OnTransportFeedback).Times(0);
// But remb should be processed and cause a callback
EXPECT_CALL(mocks.bandwidth_observer,
OnReceivedEstimatedBitrate(kBitrateBps));
receiver.IncomingPacket(built_packet);
}
TEST(RtcpReceiverTest, Nack) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint16_t kNackList1[] = {1, 2, 3, 5};
const uint16_t kNackList23[] = {5, 7, 30, 40, 41, 58, 59, 61, 63};
const size_t kNackListLength2 = 4;
const size_t kNackListLength3 = arraysize(kNackList23) - kNackListLength2;
std::set<uint16_t> nack_set;
nack_set.insert(std::begin(kNackList1), std::end(kNackList1));
nack_set.insert(std::begin(kNackList23), std::end(kNackList23));
auto nack1 = std::make_unique<rtcp::Nack>();
nack1->SetSenderSsrc(kSenderSsrc);
nack1->SetMediaSsrc(kReceiverMainSsrc);
nack1->SetPacketIds(kNackList1, arraysize(kNackList1));
EXPECT_CALL(mocks.rtp_rtcp_impl,
OnReceivedNack(ElementsAreArray(kNackList1)));
EXPECT_CALL(mocks.packet_type_counter_observer,
RtcpPacketTypesCounterUpdated(
kReceiverMainSsrc,
AllOf(Field(&RtcpPacketTypeCounter::nack_requests,
arraysize(kNackList1)),
Field(&RtcpPacketTypeCounter::unique_nack_requests,
arraysize(kNackList1)))));
receiver.IncomingPacket(nack1->Build());
auto nack2 = std::make_unique<rtcp::Nack>();
nack2->SetSenderSsrc(kSenderSsrc);
nack2->SetMediaSsrc(kReceiverMainSsrc);
nack2->SetPacketIds(kNackList23, kNackListLength2);
auto nack3 = std::make_unique<rtcp::Nack>();
nack3->SetSenderSsrc(kSenderSsrc);
nack3->SetMediaSsrc(kReceiverMainSsrc);
nack3->SetPacketIds(kNackList23 + kNackListLength2, kNackListLength3);
rtcp::CompoundPacket two_nacks;
two_nacks.Append(std::move(nack2));
two_nacks.Append(std::move(nack3));
EXPECT_CALL(mocks.rtp_rtcp_impl,
OnReceivedNack(ElementsAreArray(kNackList23)));
EXPECT_CALL(mocks.packet_type_counter_observer,
RtcpPacketTypesCounterUpdated(
kReceiverMainSsrc,
AllOf(Field(&RtcpPacketTypeCounter::nack_requests,
arraysize(kNackList1) + arraysize(kNackList23)),
Field(&RtcpPacketTypeCounter::unique_nack_requests,
nack_set.size()))));
receiver.IncomingPacket(two_nacks.Build());
}
TEST(RtcpReceiverTest, NackNotForUsIgnored) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
const uint16_t kNackList1[] = {1, 2, 3, 5};
const size_t kNackListLength1 = std::end(kNackList1) - std::begin(kNackList1);
rtcp::Nack nack;
nack.SetSenderSsrc(kSenderSsrc);
nack.SetMediaSsrc(kNotToUsSsrc);
nack.SetPacketIds(kNackList1, kNackListLength1);
EXPECT_CALL(mocks.packet_type_counter_observer,
RtcpPacketTypesCounterUpdated(
_, Field(&RtcpPacketTypeCounter::nack_requests, 0)));
receiver.IncomingPacket(nack.Build());
}
TEST(RtcpReceiverTest, ForceSenderReport) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
rtcp::RapidResyncRequest rr;
rr.SetSenderSsrc(kSenderSsrc);
rr.SetMediaSsrc(kReceiverMainSsrc);
EXPECT_CALL(mocks.rtp_rtcp_impl, OnRequestSendReport());
receiver.IncomingPacket(rr.Build());
}
TEST(RtcpReceiverTest, ReceivesTargetBitrate) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
VideoBitrateAllocation expected_allocation;
expected_allocation.SetBitrate(0, 0, 10000);
expected_allocation.SetBitrate(0, 1, 20000);
expected_allocation.SetBitrate(1, 0, 40000);
expected_allocation.SetBitrate(1, 1, 80000);
rtcp::TargetBitrate bitrate;
bitrate.AddTargetBitrate(0, 0, expected_allocation.GetBitrate(0, 0) / 1000);
bitrate.AddTargetBitrate(0, 1, expected_allocation.GetBitrate(0, 1) / 1000);
bitrate.AddTargetBitrate(1, 0, expected_allocation.GetBitrate(1, 0) / 1000);
bitrate.AddTargetBitrate(1, 1, expected_allocation.GetBitrate(1, 1) / 1000);
rtcp::ExtendedReports xr;
xr.SetTargetBitrate(bitrate);
// Wrong sender ssrc, target bitrate should be discarded.
xr.SetSenderSsrc(kSenderSsrc + 1);
EXPECT_CALL(mocks.bitrate_allocation_observer,
OnBitrateAllocationUpdated(expected_allocation))
.Times(0);
receiver.IncomingPacket(xr.Build());
// Set correct ssrc, callback should be called once.
xr.SetSenderSsrc(kSenderSsrc);
EXPECT_CALL(mocks.bitrate_allocation_observer,
OnBitrateAllocationUpdated(expected_allocation));
receiver.IncomingPacket(xr.Build());
}
TEST(RtcpReceiverTest, HandlesIncorrectTargetBitrate) {
ReceiverMocks mocks;
RTCPReceiver receiver(DefaultConfiguration(&mocks), &mocks.rtp_rtcp_impl);
receiver.SetRemoteSSRC(kSenderSsrc);
VideoBitrateAllocation expected_allocation;
expected_allocation.SetBitrate(0, 0, 10000);
rtcp::TargetBitrate bitrate;
bitrate.AddTargetBitrate(0, 0, expected_allocation.GetBitrate(0, 0) / 1000);
bitrate.AddTargetBitrate(0, kMaxTemporalStreams, 20000);
bitrate.AddTargetBitrate(kMaxSpatialLayers, 0, 40000);
rtcp::ExtendedReports xr;
xr.SetTargetBitrate(bitrate);
xr.SetSenderSsrc(kSenderSsrc);
EXPECT_CALL(mocks.bitrate_allocation_observer,
OnBitrateAllocationUpdated(expected_allocation));
receiver.IncomingPacket(xr.Build());
}
} // namespace webrtc
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