| /* |
| * Copyright 2019 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 <memory> |
| #include <ostream> // no-presubmit-check TODO(webrtc:8982) |
| |
| #include "absl/algorithm/container.h" |
| #include "api/audio_codecs/builtin_audio_decoder_factory.h" |
| #include "api/audio_codecs/builtin_audio_encoder_factory.h" |
| #include "api/create_peerconnection_factory.h" |
| #include "api/media_types.h" |
| #include "api/rtc_error.h" |
| #include "api/rtp_transceiver_interface.h" |
| #include "api/uma_metrics.h" |
| #include "api/video_codecs/builtin_video_decoder_factory.h" |
| #include "api/video_codecs/builtin_video_encoder_factory.h" |
| #include "pc/peer_connection.h" |
| #include "pc/peer_connection_wrapper.h" |
| #include "pc/test/fake_audio_capture_module.h" |
| #include "pc/test/mock_peer_connection_observers.h" |
| #include "rtc_base/gunit.h" |
| #include "system_wrappers/include/metrics.h" |
| #include "test/gmock.h" |
| |
| using ::testing::Contains; |
| using ::testing::Each; |
| using ::testing::ElementsAre; |
| using ::testing::ElementsAreArray; |
| using ::testing::Eq; |
| using ::testing::Field; |
| using ::testing::IsEmpty; |
| using ::testing::Ne; |
| using ::testing::Pair; |
| using ::testing::Property; |
| using ::testing::SizeIs; |
| |
| using cricket::MediaContentDescription; |
| using cricket::RidDescription; |
| using cricket::SimulcastDescription; |
| using cricket::SimulcastLayer; |
| using cricket::StreamParams; |
| |
| namespace cricket { |
| |
| std::ostream& operator<<( // no-presubmit-check TODO(webrtc:8982) |
| std::ostream& os, // no-presubmit-check TODO(webrtc:8982) |
| const SimulcastLayer& layer) { |
| if (layer.is_paused) { |
| os << "~"; |
| } |
| return os << layer.rid; |
| } |
| |
| } // namespace cricket |
| |
| namespace { |
| |
| std::vector<SimulcastLayer> CreateLayers(const std::vector<std::string>& rids, |
| const std::vector<bool>& active) { |
| RTC_DCHECK_EQ(rids.size(), active.size()); |
| std::vector<SimulcastLayer> result; |
| absl::c_transform(rids, active, std::back_inserter(result), |
| [](const std::string& rid, bool is_active) { |
| return SimulcastLayer(rid, !is_active); |
| }); |
| return result; |
| } |
| std::vector<SimulcastLayer> CreateLayers(const std::vector<std::string>& rids, |
| bool active) { |
| return CreateLayers(rids, std::vector<bool>(rids.size(), active)); |
| } |
| |
| #if RTC_METRICS_ENABLED |
| std::vector<SimulcastLayer> CreateLayers(int num_layers, bool active) { |
| rtc::UniqueStringGenerator rid_generator; |
| std::vector<std::string> rids; |
| for (int i = 0; i < num_layers; ++i) { |
| rids.push_back(rid_generator()); |
| } |
| return CreateLayers(rids, active); |
| } |
| #endif |
| |
| } // namespace |
| |
| namespace webrtc { |
| |
| class PeerConnectionSimulcastTests : public ::testing::Test { |
| public: |
| PeerConnectionSimulcastTests() |
| : pc_factory_( |
| CreatePeerConnectionFactory(rtc::Thread::Current(), |
| rtc::Thread::Current(), |
| rtc::Thread::Current(), |
| FakeAudioCaptureModule::Create(), |
| CreateBuiltinAudioEncoderFactory(), |
| CreateBuiltinAudioDecoderFactory(), |
| CreateBuiltinVideoEncoderFactory(), |
| CreateBuiltinVideoDecoderFactory(), |
| nullptr, |
| nullptr)) {} |
| |
| rtc::scoped_refptr<PeerConnectionInterface> CreatePeerConnection( |
| MockPeerConnectionObserver* observer) { |
| PeerConnectionInterface::RTCConfiguration config; |
| config.sdp_semantics = SdpSemantics::kUnifiedPlan; |
| PeerConnectionDependencies pcd(observer); |
| auto pc = pc_factory_->CreatePeerConnection(config, std::move(pcd)); |
| EXPECT_TRUE(pc); |
| observer->SetPeerConnectionInterface(pc); |
| return pc; |
| } |
| |
| std::unique_ptr<PeerConnectionWrapper> CreatePeerConnectionWrapper() { |
| auto observer = std::make_unique<MockPeerConnectionObserver>(); |
| auto pc = CreatePeerConnection(observer.get()); |
| return std::make_unique<PeerConnectionWrapper>(pc_factory_, pc, |
| std::move(observer)); |
| } |
| |
| void ExchangeOfferAnswer(PeerConnectionWrapper* local, |
| PeerConnectionWrapper* remote, |
| const std::vector<SimulcastLayer>& answer_layers) { |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| // Remove simulcast as the second peer connection won't support it. |
| RemoveSimulcast(offer.get()); |
| std::string err; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &err)) << err; |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| // Setup the answer to look like a server response. |
| auto mcd_answer = answer->description()->contents()[0].media_description(); |
| auto& receive_layers = mcd_answer->simulcast_description().receive_layers(); |
| for (const SimulcastLayer& layer : answer_layers) { |
| receive_layers.AddLayer(layer); |
| } |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &err)) << err; |
| } |
| |
| RtpTransceiverInit CreateTransceiverInit( |
| const std::vector<SimulcastLayer>& layers) { |
| RtpTransceiverInit init; |
| for (const SimulcastLayer& layer : layers) { |
| RtpEncodingParameters encoding; |
| encoding.rid = layer.rid; |
| encoding.active = !layer.is_paused; |
| init.send_encodings.push_back(encoding); |
| } |
| return init; |
| } |
| |
| rtc::scoped_refptr<RtpTransceiverInterface> AddTransceiver( |
| PeerConnectionWrapper* pc, |
| const std::vector<SimulcastLayer>& layers, |
| cricket::MediaType media_type = cricket::MEDIA_TYPE_VIDEO) { |
| auto init = CreateTransceiverInit(layers); |
| return pc->AddTransceiver(media_type, init); |
| } |
| |
| SimulcastDescription RemoveSimulcast(SessionDescriptionInterface* sd) { |
| auto mcd = sd->description()->contents()[0].media_description(); |
| auto result = mcd->simulcast_description(); |
| mcd->set_simulcast_description(SimulcastDescription()); |
| return result; |
| } |
| |
| void AddRequestToReceiveSimulcast(const std::vector<SimulcastLayer>& layers, |
| SessionDescriptionInterface* sd) { |
| auto mcd = sd->description()->contents()[0].media_description(); |
| SimulcastDescription simulcast; |
| auto& receive_layers = simulcast.receive_layers(); |
| for (const SimulcastLayer& layer : layers) { |
| receive_layers.AddLayer(layer); |
| } |
| mcd->set_simulcast_description(simulcast); |
| } |
| |
| void ValidateTransceiverParameters( |
| rtc::scoped_refptr<RtpTransceiverInterface> transceiver, |
| const std::vector<SimulcastLayer>& layers) { |
| auto parameters = transceiver->sender()->GetParameters(); |
| std::vector<SimulcastLayer> result_layers; |
| absl::c_transform(parameters.encodings, std::back_inserter(result_layers), |
| [](const RtpEncodingParameters& encoding) { |
| return SimulcastLayer(encoding.rid, !encoding.active); |
| }); |
| EXPECT_THAT(result_layers, ElementsAreArray(layers)); |
| } |
| |
| private: |
| rtc::scoped_refptr<PeerConnectionFactoryInterface> pc_factory_; |
| }; |
| |
| #if RTC_METRICS_ENABLED |
| // This class is used to test the metrics emitted for simulcast. |
| class PeerConnectionSimulcastMetricsTests |
| : public PeerConnectionSimulcastTests, |
| public ::testing::WithParamInterface<int> { |
| protected: |
| PeerConnectionSimulcastMetricsTests() { webrtc::metrics::Reset(); } |
| |
| std::map<int, int> LocalDescriptionSamples() { |
| return metrics::Samples( |
| "WebRTC.PeerConnection.Simulcast.ApplyLocalDescription"); |
| } |
| std::map<int, int> RemoteDescriptionSamples() { |
| return metrics::Samples( |
| "WebRTC.PeerConnection.Simulcast.ApplyRemoteDescription"); |
| } |
| }; |
| #endif |
| |
| // Validates that RIDs are supported arguments when adding a transceiver. |
| TEST_F(PeerConnectionSimulcastTests, CanCreateTransceiverWithRid) { |
| auto pc = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"f"}, true); |
| auto transceiver = AddTransceiver(pc.get(), layers); |
| ASSERT_TRUE(transceiver); |
| auto parameters = transceiver->sender()->GetParameters(); |
| // Single RID should be removed. |
| EXPECT_THAT(parameters.encodings, |
| ElementsAre(Field("rid", &RtpEncodingParameters::rid, Eq("")))); |
| } |
| |
| TEST_F(PeerConnectionSimulcastTests, CanCreateTransceiverWithSimulcast) { |
| auto pc = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"f", "h", "q"}, true); |
| auto transceiver = AddTransceiver(pc.get(), layers); |
| ASSERT_TRUE(transceiver); |
| ValidateTransceiverParameters(transceiver, layers); |
| } |
| |
| TEST_F(PeerConnectionSimulcastTests, RidsAreAutogeneratedIfNotProvided) { |
| auto pc = CreatePeerConnectionWrapper(); |
| auto init = CreateTransceiverInit(CreateLayers({"f", "h", "q"}, true)); |
| for (RtpEncodingParameters& parameters : init.send_encodings) { |
| parameters.rid = ""; |
| } |
| auto transceiver = pc->AddTransceiver(cricket::MEDIA_TYPE_VIDEO, init); |
| auto parameters = transceiver->sender()->GetParameters(); |
| ASSERT_EQ(3u, parameters.encodings.size()); |
| EXPECT_THAT(parameters.encodings, |
| Each(Field("rid", &RtpEncodingParameters::rid, Ne("")))); |
| } |
| |
| // Validates that an error is returned when there is a mix of supplied and not |
| // supplied RIDs in a call to AddTransceiver. |
| TEST_F(PeerConnectionSimulcastTests, MustSupplyAllOrNoRidsInSimulcast) { |
| auto pc_wrapper = CreatePeerConnectionWrapper(); |
| auto pc = pc_wrapper->pc(); |
| // Cannot create a layer with empty RID. Remove the RID after init is created. |
| auto layers = CreateLayers({"f", "h", "remove"}, true); |
| auto init = CreateTransceiverInit(layers); |
| init.send_encodings[2].rid = ""; |
| auto error = pc->AddTransceiver(cricket::MEDIA_TYPE_VIDEO, init); |
| EXPECT_EQ(RTCErrorType::INVALID_PARAMETER, error.error().type()); |
| } |
| |
| // Validates that an error is returned when illegal RIDs are supplied. |
| TEST_F(PeerConnectionSimulcastTests, ChecksForIllegalRidValues) { |
| auto pc_wrapper = CreatePeerConnectionWrapper(); |
| auto pc = pc_wrapper->pc(); |
| auto layers = CreateLayers({"f", "h", "~q"}, true); |
| auto init = CreateTransceiverInit(layers); |
| auto error = pc->AddTransceiver(cricket::MEDIA_TYPE_VIDEO, init); |
| EXPECT_EQ(RTCErrorType::INVALID_PARAMETER, error.error().type()); |
| } |
| |
| // Validates that a single RID is removed from the encoding layer. |
| TEST_F(PeerConnectionSimulcastTests, SingleRidIsRemovedFromSessionDescription) { |
| auto pc = CreatePeerConnectionWrapper(); |
| auto transceiver = AddTransceiver(pc.get(), CreateLayers({"1"}, true)); |
| auto offer = pc->CreateOfferAndSetAsLocal(); |
| ASSERT_TRUE(offer); |
| auto contents = offer->description()->contents(); |
| ASSERT_EQ(1u, contents.size()); |
| EXPECT_THAT(contents[0].media_description()->streams(), |
| ElementsAre(Property(&StreamParams::has_rids, false))); |
| } |
| |
| TEST_F(PeerConnectionSimulcastTests, SimulcastLayersRemovedFromTail) { |
| static_assert( |
| kMaxSimulcastStreams < 8, |
| "Test assumes that the platform does not allow 8 simulcast layers"); |
| auto pc = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3", "4", "5", "6", "7", "8"}, true); |
| std::vector<SimulcastLayer> expected_layers; |
| std::copy_n(layers.begin(), kMaxSimulcastStreams, |
| std::back_inserter(expected_layers)); |
| auto transceiver = AddTransceiver(pc.get(), layers); |
| ValidateTransceiverParameters(transceiver, expected_layers); |
| } |
| |
| // Checks that an offfer to send simulcast contains a SimulcastDescription. |
| TEST_F(PeerConnectionSimulcastTests, SimulcastAppearsInSessionDescription) { |
| auto pc = CreatePeerConnectionWrapper(); |
| std::vector<std::string> rids({"f", "h", "q"}); |
| auto layers = CreateLayers(rids, true); |
| auto transceiver = AddTransceiver(pc.get(), layers); |
| auto offer = pc->CreateOffer(); |
| ASSERT_TRUE(offer); |
| auto contents = offer->description()->contents(); |
| ASSERT_EQ(1u, contents.size()); |
| auto content = contents[0]; |
| auto mcd = content.media_description(); |
| ASSERT_TRUE(mcd->HasSimulcast()); |
| auto simulcast = mcd->simulcast_description(); |
| EXPECT_THAT(simulcast.receive_layers(), IsEmpty()); |
| // The size is validated separately because GetAllLayers() flattens the list. |
| EXPECT_THAT(simulcast.send_layers(), SizeIs(3)); |
| std::vector<SimulcastLayer> result = simulcast.send_layers().GetAllLayers(); |
| EXPECT_THAT(result, ElementsAreArray(layers)); |
| auto streams = mcd->streams(); |
| ASSERT_EQ(1u, streams.size()); |
| auto stream = streams[0]; |
| EXPECT_FALSE(stream.has_ssrcs()); |
| EXPECT_TRUE(stream.has_rids()); |
| std::vector<std::string> result_rids; |
| absl::c_transform(stream.rids(), std::back_inserter(result_rids), |
| [](const RidDescription& rid) { return rid.rid; }); |
| EXPECT_THAT(result_rids, ElementsAreArray(rids)); |
| } |
| |
| // Checks that Simulcast layers propagate to the sender parameters. |
| TEST_F(PeerConnectionSimulcastTests, SimulcastLayersAreSetInSender) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"f", "h", "q"}, true); |
| auto transceiver = AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| { |
| SCOPED_TRACE("after create offer"); |
| ValidateTransceiverParameters(transceiver, layers); |
| } |
| // Remove simulcast as the second peer connection won't support it. |
| auto simulcast = RemoveSimulcast(offer.get()); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| |
| // Setup an answer that mimics a server accepting simulcast. |
| auto mcd_answer = answer->description()->contents()[0].media_description(); |
| mcd_answer->mutable_streams().clear(); |
| auto simulcast_layers = simulcast.send_layers().GetAllLayers(); |
| auto& receive_layers = mcd_answer->simulcast_description().receive_layers(); |
| for (const auto& layer : simulcast_layers) { |
| receive_layers.AddLayer(layer); |
| } |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &error)) << error; |
| { |
| SCOPED_TRACE("after set remote"); |
| ValidateTransceiverParameters(transceiver, layers); |
| } |
| } |
| |
| // Checks that paused Simulcast layers propagate to the sender parameters. |
| TEST_F(PeerConnectionSimulcastTests, PausedSimulcastLayersAreDisabledInSender) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"f", "h", "q"}, {true, false, true}); |
| auto server_layers = CreateLayers({"f", "h", "q"}, {true, false, false}); |
| RTC_DCHECK_EQ(layers.size(), server_layers.size()); |
| auto transceiver = AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| { |
| SCOPED_TRACE("after create offer"); |
| ValidateTransceiverParameters(transceiver, layers); |
| } |
| |
| // Remove simulcast as the second peer connection won't support it. |
| RemoveSimulcast(offer.get()); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| |
| // Setup an answer that mimics a server accepting simulcast. |
| auto mcd_answer = answer->description()->contents()[0].media_description(); |
| mcd_answer->mutable_streams().clear(); |
| auto& receive_layers = mcd_answer->simulcast_description().receive_layers(); |
| for (const SimulcastLayer& layer : server_layers) { |
| receive_layers.AddLayer(layer); |
| } |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &error)) << error; |
| { |
| SCOPED_TRACE("after set remote"); |
| ValidateTransceiverParameters(transceiver, server_layers); |
| } |
| } |
| |
| // Checks that when Simulcast is not supported by the remote party, then all |
| // the layers (except the first) are removed. |
| TEST_F(PeerConnectionSimulcastTests, SimulcastRejectedRemovesExtraLayers) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3", "4"}, true); |
| auto transceiver = AddTransceiver(local.get(), layers); |
| ExchangeOfferAnswer(local.get(), remote.get(), {}); |
| auto parameters = transceiver->sender()->GetParameters(); |
| // Should only have the first layer. |
| EXPECT_THAT(parameters.encodings, |
| ElementsAre(Field("rid", &RtpEncodingParameters::rid, Eq("1")))); |
| } |
| |
| // Checks that if Simulcast is supported by remote party, but some layers are |
| // rejected, then only rejected layers are removed from the sender. |
| TEST_F(PeerConnectionSimulcastTests, RejectedSimulcastLayersAreDeactivated) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3"}, true); |
| auto expected_layers = CreateLayers({"2", "3"}, true); |
| auto transceiver = AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| { |
| SCOPED_TRACE("after create offer"); |
| ValidateTransceiverParameters(transceiver, layers); |
| } |
| // Remove simulcast as the second peer connection won't support it. |
| auto removed_simulcast = RemoveSimulcast(offer.get()); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| auto mcd_answer = answer->description()->contents()[0].media_description(); |
| // Setup the answer to look like a server response. |
| // Remove one of the layers to reject it in the answer. |
| auto simulcast_layers = removed_simulcast.send_layers().GetAllLayers(); |
| simulcast_layers.erase(simulcast_layers.begin()); |
| auto& receive_layers = mcd_answer->simulcast_description().receive_layers(); |
| for (const auto& layer : simulcast_layers) { |
| receive_layers.AddLayer(layer); |
| } |
| ASSERT_TRUE(mcd_answer->HasSimulcast()); |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &error)) << error; |
| { |
| SCOPED_TRACE("after set remote"); |
| ValidateTransceiverParameters(transceiver, expected_layers); |
| } |
| } |
| |
| // Checks that simulcast is set up correctly when the server sends an offer |
| // requesting to receive simulcast. |
| TEST_F(PeerConnectionSimulcastTests, ServerSendsOfferToReceiveSimulcast) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"f", "h", "q"}, true); |
| AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| // Remove simulcast as a sender and set it up as a receiver. |
| RemoveSimulcast(offer.get()); |
| AddRequestToReceiveSimulcast(layers, offer.get()); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| auto transceiver = remote->pc()->GetTransceivers()[0]; |
| transceiver->SetDirectionWithError(RtpTransceiverDirection::kSendRecv); |
| EXPECT_TRUE(remote->CreateAnswerAndSetAsLocal()); |
| ValidateTransceiverParameters(transceiver, layers); |
| } |
| |
| // Checks that SetRemoteDescription doesn't attempt to associate a transceiver |
| // when simulcast is requested by the server. |
| TEST_F(PeerConnectionSimulcastTests, TransceiverIsNotRecycledWithSimulcast) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"f", "h", "q"}, true); |
| AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| // Remove simulcast as a sender and set it up as a receiver. |
| RemoveSimulcast(offer.get()); |
| AddRequestToReceiveSimulcast(layers, offer.get()); |
| // Call AddTrack so that a transceiver is created. |
| remote->AddVideoTrack("fake_track"); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| auto transceivers = remote->pc()->GetTransceivers(); |
| ASSERT_EQ(2u, transceivers.size()); |
| auto transceiver = transceivers[1]; |
| transceiver->SetDirectionWithError(RtpTransceiverDirection::kSendRecv); |
| EXPECT_TRUE(remote->CreateAnswerAndSetAsLocal()); |
| ValidateTransceiverParameters(transceiver, layers); |
| } |
| |
| // Checks that if the number of layers changes during negotiation, then any |
| // outstanding get/set parameters transaction is invalidated. |
| TEST_F(PeerConnectionSimulcastTests, ParametersAreInvalidatedWhenLayersChange) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3"}, true); |
| auto transceiver = AddTransceiver(local.get(), layers); |
| auto parameters = transceiver->sender()->GetParameters(); |
| ASSERT_EQ(3u, parameters.encodings.size()); |
| // Response will reject simulcast altogether. |
| ExchangeOfferAnswer(local.get(), remote.get(), {}); |
| auto result = transceiver->sender()->SetParameters(parameters); |
| EXPECT_EQ(RTCErrorType::INVALID_STATE, result.type()); |
| } |
| |
| // Checks that even though negotiation modifies the sender's parameters, an |
| // outstanding get/set parameters transaction is not invalidated. |
| // This test negotiates twice because initial parameters before negotiation |
| // is missing critical information and cannot be set on the sender. |
| TEST_F(PeerConnectionSimulcastTests, |
| NegotiationDoesNotInvalidateParameterTransactions) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3"}, true); |
| auto expected_layers = CreateLayers({"1", "2", "3"}, false); |
| auto transceiver = AddTransceiver(local.get(), layers); |
| ExchangeOfferAnswer(local.get(), remote.get(), expected_layers); |
| |
| // Verify that negotiation does not invalidate the parameters. |
| auto parameters = transceiver->sender()->GetParameters(); |
| ExchangeOfferAnswer(local.get(), remote.get(), expected_layers); |
| |
| auto result = transceiver->sender()->SetParameters(parameters); |
| EXPECT_TRUE(result.ok()); |
| ValidateTransceiverParameters(transceiver, expected_layers); |
| } |
| |
| // Tests that simulcast is disabled if the RID extension is not negotiated |
| // regardless of if the RIDs and simulcast attribute were negotiated properly. |
| TEST_F(PeerConnectionSimulcastTests, NegotiationDoesNotHaveRidExtension) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3"}, true); |
| auto expected_layers = CreateLayers({"1"}, true); |
| auto transceiver = AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| // Remove simulcast as the second peer connection won't support it. |
| RemoveSimulcast(offer.get()); |
| std::string err; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &err)) << err; |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| // Setup the answer to look like a server response. |
| // Drop the RID header extension. |
| auto mcd_answer = answer->description()->contents()[0].media_description(); |
| auto& receive_layers = mcd_answer->simulcast_description().receive_layers(); |
| for (const SimulcastLayer& layer : layers) { |
| receive_layers.AddLayer(layer); |
| } |
| cricket::RtpHeaderExtensions extensions; |
| for (auto extension : mcd_answer->rtp_header_extensions()) { |
| if (extension.uri != RtpExtension::kRidUri) { |
| extensions.push_back(extension); |
| } |
| } |
| mcd_answer->set_rtp_header_extensions(extensions); |
| EXPECT_EQ(layers.size(), mcd_answer->simulcast_description() |
| .receive_layers() |
| .GetAllLayers() |
| .size()); |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &err)) << err; |
| ValidateTransceiverParameters(transceiver, expected_layers); |
| } |
| |
| TEST_F(PeerConnectionSimulcastTests, SimulcastAudioRejected) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3", "4"}, true); |
| auto transceiver = |
| AddTransceiver(local.get(), layers, cricket::MEDIA_TYPE_AUDIO); |
| // Should only have the first layer. |
| auto parameters = transceiver->sender()->GetParameters(); |
| EXPECT_EQ(1u, parameters.encodings.size()); |
| EXPECT_THAT(parameters.encodings, |
| ElementsAre(Field("rid", &RtpEncodingParameters::rid, Eq("")))); |
| ExchangeOfferAnswer(local.get(), remote.get(), {}); |
| // Still have a single layer after negotiation |
| parameters = transceiver->sender()->GetParameters(); |
| EXPECT_EQ(1u, parameters.encodings.size()); |
| EXPECT_THAT(parameters.encodings, |
| ElementsAre(Field("rid", &RtpEncodingParameters::rid, Eq("")))); |
| } |
| |
| #if RTC_METRICS_ENABLED |
| // |
| // Checks the logged metrics when simulcast is not used. |
| TEST_F(PeerConnectionSimulcastMetricsTests, NoSimulcastUsageIsLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers(0, true); |
| AddTransceiver(local.get(), layers); |
| ExchangeOfferAnswer(local.get(), remote.get(), layers); |
| |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 2))); |
| EXPECT_THAT(RemoteDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 2))); |
| } |
| |
| // Checks the logged metrics when spec-compliant simulcast is used. |
| TEST_F(PeerConnectionSimulcastMetricsTests, SpecComplianceIsLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers(3, true); |
| AddTransceiver(local.get(), layers); |
| ExchangeOfferAnswer(local.get(), remote.get(), layers); |
| |
| // Expecting 2 invocations of each, because we have 2 peer connections. |
| // Only the local peer connection will be aware of simulcast. |
| // The remote peer connection will think that there is no simulcast. |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 1), |
| Pair(kSimulcastApiVersionSpecCompliant, 1))); |
| EXPECT_THAT(RemoteDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 1), |
| Pair(kSimulcastApiVersionSpecCompliant, 1))); |
| } |
| |
| // Checks the logged metrics when and incoming request to send spec-compliant |
| // simulcast is received from the remote party. |
| TEST_F(PeerConnectionSimulcastMetricsTests, IncomingSimulcastIsLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers(3, true); |
| AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionSpecCompliant, 1))); |
| |
| // Remove simulcast as a sender and set it up as a receiver. |
| RemoveSimulcast(offer.get()); |
| AddRequestToReceiveSimulcast(layers, offer.get()); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| EXPECT_THAT(RemoteDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionSpecCompliant, 1))); |
| |
| auto transceiver = remote->pc()->GetTransceivers()[0]; |
| transceiver->SetDirectionWithError(RtpTransceiverDirection::kSendRecv); |
| EXPECT_TRUE(remote->CreateAnswerAndSetAsLocal()); |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionSpecCompliant, 2))); |
| } |
| |
| // Checks that a spec-compliant simulcast offer that is rejected is logged. |
| TEST_F(PeerConnectionSimulcastMetricsTests, RejectedSimulcastIsLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3"}, true); |
| AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionSpecCompliant, 1))); |
| RemoveSimulcast(offer.get()); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| EXPECT_THAT(RemoteDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 1))); |
| |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 1), |
| Pair(kSimulcastApiVersionSpecCompliant, 1))); |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &error)) << error; |
| EXPECT_THAT(RemoteDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 2))); |
| } |
| |
| // Checks the logged metrics when legacy munging simulcast technique is used. |
| TEST_F(PeerConnectionSimulcastMetricsTests, LegacySimulcastIsLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers(0, true); |
| AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOffer(); |
| // Munge the SDP to set up legacy simulcast. |
| const std::string end_line = "\r\n"; |
| std::string sdp; |
| offer->ToString(&sdp); |
| rtc::StringBuilder builder(sdp); |
| builder << "a=ssrc:1111 cname:slimshady" << end_line; |
| builder << "a=ssrc:2222 cname:slimshady" << end_line; |
| builder << "a=ssrc:3333 cname:slimshady" << end_line; |
| builder << "a=ssrc-group:SIM 1111 2222 3333" << end_line; |
| |
| SdpParseError parse_error; |
| auto sd = |
| CreateSessionDescription(SdpType::kOffer, builder.str(), &parse_error); |
| ASSERT_TRUE(sd) << parse_error.line << parse_error.description; |
| std::string error; |
| EXPECT_TRUE(local->SetLocalDescription(std::move(sd), &error)) << error; |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionLegacy, 1))); |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| EXPECT_THAT(RemoteDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 1))); |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| EXPECT_THAT(LocalDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 1), |
| Pair(kSimulcastApiVersionLegacy, 1))); |
| // Legacy simulcast is not signaled in remote description. |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &error)) << error; |
| EXPECT_THAT(RemoteDescriptionSamples(), |
| ElementsAre(Pair(kSimulcastApiVersionNone, 2))); |
| } |
| |
| // Checks that disabling simulcast is logged in the metrics. |
| TEST_F(PeerConnectionSimulcastMetricsTests, SimulcastDisabledIsLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3"}, true); |
| AddTransceiver(local.get(), layers); |
| auto offer = local->CreateOfferAndSetAsLocal(); |
| RemoveSimulcast(offer.get()); |
| std::string error; |
| EXPECT_TRUE(remote->SetRemoteDescription(std::move(offer), &error)) << error; |
| auto answer = remote->CreateAnswerAndSetAsLocal(); |
| EXPECT_TRUE(local->SetRemoteDescription(std::move(answer), &error)) << error; |
| |
| EXPECT_EQ(1, metrics::NumSamples("WebRTC.PeerConnection.Simulcast.Disabled")); |
| EXPECT_EQ(1, |
| metrics::NumEvents("WebRTC.PeerConnection.Simulcast.Disabled", 1)); |
| } |
| |
| // Checks that the disabled metric is not logged if simulcast is not disabled. |
| TEST_F(PeerConnectionSimulcastMetricsTests, SimulcastDisabledIsNotLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto remote = CreatePeerConnectionWrapper(); |
| auto layers = CreateLayers({"1", "2", "3"}, true); |
| AddTransceiver(local.get(), layers); |
| ExchangeOfferAnswer(local.get(), remote.get(), layers); |
| |
| EXPECT_EQ(0, metrics::NumSamples("WebRTC.PeerConnection.Simulcast.Disabled")); |
| } |
| |
| const int kMaxLayersInMetricsTest = 8; |
| |
| // Checks that the number of send encodings is logged in a metric. |
| TEST_P(PeerConnectionSimulcastMetricsTests, NumberOfSendEncodingsIsLogged) { |
| auto local = CreatePeerConnectionWrapper(); |
| auto num_layers = GetParam(); |
| auto layers = CreateLayers(num_layers, true); |
| AddTransceiver(local.get(), layers); |
| EXPECT_EQ(1, metrics::NumSamples( |
| "WebRTC.PeerConnection.Simulcast.NumberOfSendEncodings")); |
| EXPECT_EQ(1, metrics::NumEvents( |
| "WebRTC.PeerConnection.Simulcast.NumberOfSendEncodings", |
| num_layers)); |
| } |
| |
| INSTANTIATE_TEST_SUITE_P(NumberOfSendEncodings, |
| PeerConnectionSimulcastMetricsTests, |
| ::testing::Range(0, kMaxLayersInMetricsTest)); |
| #endif |
| } // namespace webrtc |
