diff options
Diffstat (limited to 'third_party/libwebrtc/call/call_perf_tests.cc')
-rw-r--r-- | third_party/libwebrtc/call/call_perf_tests.cc | 1202 |
1 files changed, 1202 insertions, 0 deletions
diff --git a/third_party/libwebrtc/call/call_perf_tests.cc b/third_party/libwebrtc/call/call_perf_tests.cc new file mode 100644 index 0000000000..a50f5ee605 --- /dev/null +++ b/third_party/libwebrtc/call/call_perf_tests.cc @@ -0,0 +1,1202 @@ +/* + * Copyright (c) 2013 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 <algorithm> +#include <limits> +#include <memory> +#include <string> + +#include "absl/strings/string_view.h" +#include "api/audio_codecs/builtin_audio_encoder_factory.h" +#include "api/numerics/samples_stats_counter.h" +#include "api/rtc_event_log/rtc_event_log.h" +#include "api/task_queue/pending_task_safety_flag.h" +#include "api/task_queue/task_queue_base.h" +#include "api/test/metrics/global_metrics_logger_and_exporter.h" +#include "api/test/metrics/metric.h" +#include "api/test/simulated_network.h" +#include "api/video/builtin_video_bitrate_allocator_factory.h" +#include "api/video/video_bitrate_allocation.h" +#include "api/video_codecs/video_encoder.h" +#include "call/call.h" +#include "call/fake_network_pipe.h" +#include "call/simulated_network.h" +#include "media/engine/internal_encoder_factory.h" +#include "media/engine/simulcast_encoder_adapter.h" +#include "modules/audio_coding/include/audio_coding_module.h" +#include "modules/audio_device/include/test_audio_device.h" +#include "modules/audio_mixer/audio_mixer_impl.h" +#include "modules/rtp_rtcp/source/rtp_packet.h" +#include "rtc_base/checks.h" +#include "rtc_base/synchronization/mutex.h" +#include "rtc_base/task_queue_for_test.h" +#include "rtc_base/thread.h" +#include "rtc_base/thread_annotations.h" +#include "system_wrappers/include/metrics.h" +#include "test/call_test.h" +#include "test/direct_transport.h" +#include "test/drifting_clock.h" +#include "test/encoder_settings.h" +#include "test/fake_encoder.h" +#include "test/field_trial.h" +#include "test/frame_generator_capturer.h" +#include "test/gtest.h" +#include "test/null_transport.h" +#include "test/rtp_rtcp_observer.h" +#include "test/testsupport/file_utils.h" +#include "test/video_encoder_proxy_factory.h" +#include "video/config/video_encoder_config.h" +#include "video/transport_adapter.h" + +using webrtc::test::DriftingClock; + +namespace webrtc { +namespace { + +using ::webrtc::test::GetGlobalMetricsLogger; +using ::webrtc::test::ImprovementDirection; +using ::webrtc::test::Unit; + +enum : int { // The first valid value is 1. + kTransportSequenceNumberExtensionId = 1, +}; + +} // namespace + +class CallPerfTest : public test::CallTest { + public: + CallPerfTest() { + RegisterRtpExtension(RtpExtension(RtpExtension::kTransportSequenceNumberUri, + kTransportSequenceNumberExtensionId)); + } + + protected: + enum class FecMode { kOn, kOff }; + enum class CreateOrder { kAudioFirst, kVideoFirst }; + void TestAudioVideoSync(FecMode fec, + CreateOrder create_first, + float video_ntp_speed, + float video_rtp_speed, + float audio_rtp_speed, + absl::string_view test_label); + + void TestMinTransmitBitrate(bool pad_to_min_bitrate); + + void TestCaptureNtpTime(const BuiltInNetworkBehaviorConfig& net_config, + int threshold_ms, + int start_time_ms, + int run_time_ms); + void TestMinAudioVideoBitrate(int test_bitrate_from, + int test_bitrate_to, + int test_bitrate_step, + int min_bwe, + int start_bwe, + int max_bwe); + void TestEncodeFramerate(VideoEncoderFactory* encoder_factory, + absl::string_view payload_name, + const std::vector<int>& max_framerates); +}; + +class VideoRtcpAndSyncObserver : public test::RtpRtcpObserver, + public rtc::VideoSinkInterface<VideoFrame> { + static const int kInSyncThresholdMs = 50; + static const int kStartupTimeMs = 2000; + static const int kMinRunTimeMs = 30000; + + public: + explicit VideoRtcpAndSyncObserver(TaskQueueBase* task_queue, + Clock* clock, + absl::string_view test_label) + : test::RtpRtcpObserver(CallPerfTest::kLongTimeout), + clock_(clock), + test_label_(test_label), + creation_time_ms_(clock_->TimeInMilliseconds()), + task_queue_(task_queue) {} + + void OnFrame(const VideoFrame& video_frame) override { + task_queue_->PostTask([this]() { CheckStats(); }); + } + + void CheckStats() { + if (!receive_stream_) + return; + + VideoReceiveStreamInterface::Stats stats = receive_stream_->GetStats(); + if (stats.sync_offset_ms == std::numeric_limits<int>::max()) + return; + + int64_t now_ms = clock_->TimeInMilliseconds(); + int64_t time_since_creation = now_ms - creation_time_ms_; + // During the first couple of seconds audio and video can falsely be + // estimated as being synchronized. We don't want to trigger on those. + if (time_since_creation < kStartupTimeMs) + return; + if (std::abs(stats.sync_offset_ms) < kInSyncThresholdMs) { + if (first_time_in_sync_ == -1) { + first_time_in_sync_ = now_ms; + GetGlobalMetricsLogger()->LogSingleValueMetric( + "sync_convergence_time" + test_label_, "synchronization", + time_since_creation, Unit::kMilliseconds, + ImprovementDirection::kSmallerIsBetter); + } + if (time_since_creation > kMinRunTimeMs) + observation_complete_.Set(); + } + if (first_time_in_sync_ != -1) + sync_offset_ms_list_.AddSample(stats.sync_offset_ms); + } + + void set_receive_stream(VideoReceiveStreamInterface* receive_stream) { + RTC_DCHECK_EQ(task_queue_, TaskQueueBase::Current()); + // Note that receive_stream may be nullptr. + receive_stream_ = receive_stream; + } + + void PrintResults() { + GetGlobalMetricsLogger()->LogMetric( + "stream_offset" + test_label_, "synchronization", sync_offset_ms_list_, + Unit::kMilliseconds, ImprovementDirection::kNeitherIsBetter); + } + + private: + Clock* const clock_; + const std::string test_label_; + const int64_t creation_time_ms_; + int64_t first_time_in_sync_ = -1; + VideoReceiveStreamInterface* receive_stream_ = nullptr; + SamplesStatsCounter sync_offset_ms_list_; + TaskQueueBase* const task_queue_; +}; + +void CallPerfTest::TestAudioVideoSync(FecMode fec, + CreateOrder create_first, + float video_ntp_speed, + float video_rtp_speed, + float audio_rtp_speed, + absl::string_view test_label) { + const char* kSyncGroup = "av_sync"; + const uint32_t kAudioSendSsrc = 1234; + const uint32_t kAudioRecvSsrc = 5678; + + BuiltInNetworkBehaviorConfig audio_net_config; + audio_net_config.queue_delay_ms = 500; + audio_net_config.loss_percent = 5; + + auto observer = std::make_unique<VideoRtcpAndSyncObserver>( + task_queue(), Clock::GetRealTimeClock(), test_label); + + std::map<uint8_t, MediaType> audio_pt_map; + std::map<uint8_t, MediaType> video_pt_map; + + std::unique_ptr<test::PacketTransport> audio_send_transport; + std::unique_ptr<test::PacketTransport> video_send_transport; + std::unique_ptr<test::PacketTransport> receive_transport; + + AudioSendStream* audio_send_stream; + AudioReceiveStreamInterface* audio_receive_stream; + std::unique_ptr<DriftingClock> drifting_clock; + + SendTask(task_queue(), [&]() { + metrics::Reset(); + rtc::scoped_refptr<TestAudioDeviceModule> fake_audio_device = + TestAudioDeviceModule::Create( + task_queue_factory_.get(), + TestAudioDeviceModule::CreatePulsedNoiseCapturer(256, 48000), + TestAudioDeviceModule::CreateDiscardRenderer(48000), + audio_rtp_speed); + EXPECT_EQ(0, fake_audio_device->Init()); + + AudioState::Config send_audio_state_config; + send_audio_state_config.audio_mixer = AudioMixerImpl::Create(); + send_audio_state_config.audio_processing = + AudioProcessingBuilder().Create(); + send_audio_state_config.audio_device_module = fake_audio_device; + Call::Config sender_config(send_event_log_.get()); + + auto audio_state = AudioState::Create(send_audio_state_config); + fake_audio_device->RegisterAudioCallback(audio_state->audio_transport()); + sender_config.audio_state = audio_state; + Call::Config receiver_config(recv_event_log_.get()); + receiver_config.audio_state = audio_state; + CreateCalls(sender_config, receiver_config); + + std::copy_if(std::begin(payload_type_map_), std::end(payload_type_map_), + std::inserter(audio_pt_map, audio_pt_map.end()), + [](const std::pair<const uint8_t, MediaType>& pair) { + return pair.second == MediaType::AUDIO; + }); + std::copy_if(std::begin(payload_type_map_), std::end(payload_type_map_), + std::inserter(video_pt_map, video_pt_map.end()), + [](const std::pair<const uint8_t, MediaType>& pair) { + return pair.second == MediaType::VIDEO; + }); + + audio_send_transport = std::make_unique<test::PacketTransport>( + task_queue(), sender_call_.get(), observer.get(), + test::PacketTransport::kSender, audio_pt_map, + std::make_unique<FakeNetworkPipe>( + Clock::GetRealTimeClock(), + std::make_unique<SimulatedNetwork>(audio_net_config)), + GetRegisteredExtensions(), GetRegisteredExtensions()); + audio_send_transport->SetReceiver(receiver_call_->Receiver()); + + video_send_transport = std::make_unique<test::PacketTransport>( + task_queue(), sender_call_.get(), observer.get(), + test::PacketTransport::kSender, video_pt_map, + std::make_unique<FakeNetworkPipe>( + Clock::GetRealTimeClock(), + std::make_unique<SimulatedNetwork>(BuiltInNetworkBehaviorConfig())), + GetRegisteredExtensions(), GetRegisteredExtensions()); + video_send_transport->SetReceiver(receiver_call_->Receiver()); + + receive_transport = std::make_unique<test::PacketTransport>( + task_queue(), receiver_call_.get(), observer.get(), + test::PacketTransport::kReceiver, payload_type_map_, + std::make_unique<FakeNetworkPipe>( + Clock::GetRealTimeClock(), + std::make_unique<SimulatedNetwork>(BuiltInNetworkBehaviorConfig())), + GetRegisteredExtensions(), GetRegisteredExtensions()); + receive_transport->SetReceiver(sender_call_->Receiver()); + + CreateSendConfig(1, 0, 0, video_send_transport.get()); + CreateMatchingReceiveConfigs(receive_transport.get()); + + AudioSendStream::Config audio_send_config(audio_send_transport.get()); + audio_send_config.rtp.ssrc = kAudioSendSsrc; + // TODO(bugs.webrtc.org/14683): Let the tests fail with invalid config. + audio_send_config.send_codec_spec = AudioSendStream::Config::SendCodecSpec( + kAudioSendPayloadType, {"OPUS", 48000, 2}); + audio_send_config.min_bitrate_bps = 6000; + audio_send_config.max_bitrate_bps = 510000; + audio_send_config.encoder_factory = CreateBuiltinAudioEncoderFactory(); + audio_send_stream = sender_call_->CreateAudioSendStream(audio_send_config); + + GetVideoSendConfig()->rtp.nack.rtp_history_ms = kNackRtpHistoryMs; + if (fec == FecMode::kOn) { + GetVideoSendConfig()->rtp.ulpfec.red_payload_type = kRedPayloadType; + GetVideoSendConfig()->rtp.ulpfec.ulpfec_payload_type = kUlpfecPayloadType; + video_receive_configs_[0].rtp.red_payload_type = kRedPayloadType; + video_receive_configs_[0].rtp.ulpfec_payload_type = kUlpfecPayloadType; + } + video_receive_configs_[0].rtp.nack.rtp_history_ms = 1000; + video_receive_configs_[0].renderer = observer.get(); + video_receive_configs_[0].sync_group = kSyncGroup; + + AudioReceiveStreamInterface::Config audio_recv_config; + audio_recv_config.rtp.remote_ssrc = kAudioSendSsrc; + audio_recv_config.rtp.local_ssrc = kAudioRecvSsrc; + audio_recv_config.rtcp_send_transport = receive_transport.get(); + audio_recv_config.sync_group = kSyncGroup; + audio_recv_config.decoder_factory = audio_decoder_factory_; + audio_recv_config.decoder_map = { + {kAudioSendPayloadType, {"OPUS", 48000, 2}}}; + + if (create_first == CreateOrder::kAudioFirst) { + audio_receive_stream = + receiver_call_->CreateAudioReceiveStream(audio_recv_config); + CreateVideoStreams(); + } else { + CreateVideoStreams(); + audio_receive_stream = + receiver_call_->CreateAudioReceiveStream(audio_recv_config); + } + EXPECT_EQ(1u, video_receive_streams_.size()); + observer->set_receive_stream(video_receive_streams_[0]); + drifting_clock = std::make_unique<DriftingClock>(clock_, video_ntp_speed); + CreateFrameGeneratorCapturerWithDrift(drifting_clock.get(), video_rtp_speed, + kDefaultFramerate, kDefaultWidth, + kDefaultHeight); + + Start(); + + audio_send_stream->Start(); + audio_receive_stream->Start(); + }); + + EXPECT_TRUE(observer->Wait()) + << "Timed out while waiting for audio and video to be synchronized."; + + SendTask(task_queue(), [&]() { + // Clear the pointer to the receive stream since it will now be deleted. + observer->set_receive_stream(nullptr); + + audio_send_stream->Stop(); + audio_receive_stream->Stop(); + + Stop(); + + DestroyStreams(); + + sender_call_->DestroyAudioSendStream(audio_send_stream); + receiver_call_->DestroyAudioReceiveStream(audio_receive_stream); + + DestroyCalls(); + // Call may post periodic rtcp packet to the transport on the process + // thread, thus transport should be destroyed after the call objects. + // Though transports keep pointers to the call objects, transports handle + // packets on the task_queue() and thus wouldn't create a race while current + // destruction happens in the same task as destruction of the call objects. + video_send_transport.reset(); + audio_send_transport.reset(); + receive_transport.reset(); + }); + + observer->PrintResults(); + + // In quick test synchronization may not be achieved in time. + if (!field_trial::IsEnabled("WebRTC-QuickPerfTest")) { +// TODO(bugs.webrtc.org/10417): Reenable this for iOS +#if !defined(WEBRTC_IOS) + EXPECT_METRIC_EQ(1, metrics::NumSamples("WebRTC.Video.AVSyncOffsetInMs")); +#endif + } + + task_queue()->PostTask( + [to_delete = observer.release()]() { delete to_delete; }); +} + +TEST_F(CallPerfTest, Synchronization_PlaysOutAudioAndVideoWithoutClockDrift) { + TestAudioVideoSync(FecMode::kOff, CreateOrder::kAudioFirst, + DriftingClock::kNoDrift, DriftingClock::kNoDrift, + DriftingClock::kNoDrift, "_video_no_drift"); +} + +TEST_F(CallPerfTest, Synchronization_PlaysOutAudioAndVideoWithVideoNtpDrift) { + TestAudioVideoSync(FecMode::kOff, CreateOrder::kAudioFirst, + DriftingClock::PercentsFaster(10.0f), + DriftingClock::kNoDrift, DriftingClock::kNoDrift, + "_video_ntp_drift"); +} + +TEST_F(CallPerfTest, + Synchronization_PlaysOutAudioAndVideoWithAudioFasterThanVideoDrift) { + TestAudioVideoSync(FecMode::kOff, CreateOrder::kAudioFirst, + DriftingClock::kNoDrift, + DriftingClock::PercentsSlower(30.0f), + DriftingClock::PercentsFaster(30.0f), "_audio_faster"); +} + +TEST_F(CallPerfTest, + Synchronization_PlaysOutAudioAndVideoWithVideoFasterThanAudioDrift) { + TestAudioVideoSync(FecMode::kOn, CreateOrder::kVideoFirst, + DriftingClock::kNoDrift, + DriftingClock::PercentsFaster(30.0f), + DriftingClock::PercentsSlower(30.0f), "_video_faster"); +} + +void CallPerfTest::TestCaptureNtpTime( + const BuiltInNetworkBehaviorConfig& net_config, + int threshold_ms, + int start_time_ms, + int run_time_ms) { + class CaptureNtpTimeObserver : public test::EndToEndTest, + public rtc::VideoSinkInterface<VideoFrame> { + public: + CaptureNtpTimeObserver(const BuiltInNetworkBehaviorConfig& net_config, + int threshold_ms, + int start_time_ms, + int run_time_ms) + : EndToEndTest(kLongTimeout), + net_config_(net_config), + clock_(Clock::GetRealTimeClock()), + threshold_ms_(threshold_ms), + start_time_ms_(start_time_ms), + run_time_ms_(run_time_ms), + creation_time_ms_(clock_->TimeInMilliseconds()), + capturer_(nullptr), + rtp_start_timestamp_set_(false), + rtp_start_timestamp_(0) {} + + private: + BuiltInNetworkBehaviorConfig GetSendTransportConfig() const override { + return net_config_; + } + + BuiltInNetworkBehaviorConfig GetReceiveTransportConfig() const override { + return net_config_; + } + + void OnFrame(const VideoFrame& video_frame) override { + MutexLock lock(&mutex_); + if (video_frame.ntp_time_ms() <= 0) { + // Haven't got enough RTCP SR in order to calculate the capture ntp + // time. + return; + } + + int64_t now_ms = clock_->TimeInMilliseconds(); + int64_t time_since_creation = now_ms - creation_time_ms_; + if (time_since_creation < start_time_ms_) { + // Wait for `start_time_ms_` before start measuring. + return; + } + + if (time_since_creation > run_time_ms_) { + observation_complete_.Set(); + } + + FrameCaptureTimeList::iterator iter = + capture_time_list_.find(video_frame.timestamp()); + EXPECT_TRUE(iter != capture_time_list_.end()); + + // The real capture time has been wrapped to uint32_t before converted + // to rtp timestamp in the sender side. So here we convert the estimated + // capture time to a uint32_t 90k timestamp also for comparing. + uint32_t estimated_capture_timestamp = + 90 * static_cast<uint32_t>(video_frame.ntp_time_ms()); + uint32_t real_capture_timestamp = iter->second; + int time_offset_ms = real_capture_timestamp - estimated_capture_timestamp; + time_offset_ms = time_offset_ms / 90; + time_offset_ms_list_.AddSample(time_offset_ms); + + EXPECT_TRUE(std::abs(time_offset_ms) < threshold_ms_); + } + + Action OnSendRtp(const uint8_t* packet, size_t length) override { + MutexLock lock(&mutex_); + RtpPacket rtp_packet; + EXPECT_TRUE(rtp_packet.Parse(packet, length)); + + if (!rtp_start_timestamp_set_) { + // Calculate the rtp timestamp offset in order to calculate the real + // capture time. + uint32_t first_capture_timestamp = + 90 * static_cast<uint32_t>(capturer_->first_frame_capture_time()); + rtp_start_timestamp_ = rtp_packet.Timestamp() - first_capture_timestamp; + rtp_start_timestamp_set_ = true; + } + + uint32_t capture_timestamp = + rtp_packet.Timestamp() - rtp_start_timestamp_; + capture_time_list_.insert( + capture_time_list_.end(), + std::make_pair(rtp_packet.Timestamp(), capture_timestamp)); + return SEND_PACKET; + } + + void OnFrameGeneratorCapturerCreated( + test::FrameGeneratorCapturer* frame_generator_capturer) override { + capturer_ = frame_generator_capturer; + } + + void ModifyVideoConfigs( + VideoSendStream::Config* send_config, + std::vector<VideoReceiveStreamInterface::Config>* receive_configs, + VideoEncoderConfig* encoder_config) override { + (*receive_configs)[0].renderer = this; + // Enable the receiver side rtt calculation. + (*receive_configs)[0].rtp.rtcp_xr.receiver_reference_time_report = true; + } + + void PerformTest() override { + EXPECT_TRUE(Wait()) << "Timed out while waiting for estimated capture " + "NTP time to be within bounds."; + GetGlobalMetricsLogger()->LogMetric( + "capture_ntp_time", "real - estimated", time_offset_ms_list_, + Unit::kMilliseconds, ImprovementDirection::kNeitherIsBetter); + } + + Mutex mutex_; + const BuiltInNetworkBehaviorConfig net_config_; + Clock* const clock_; + const int threshold_ms_; + const int start_time_ms_; + const int run_time_ms_; + const int64_t creation_time_ms_; + test::FrameGeneratorCapturer* capturer_; + bool rtp_start_timestamp_set_; + uint32_t rtp_start_timestamp_; + typedef std::map<uint32_t, uint32_t> FrameCaptureTimeList; + FrameCaptureTimeList capture_time_list_ RTC_GUARDED_BY(&mutex_); + SamplesStatsCounter time_offset_ms_list_; + } test(net_config, threshold_ms, start_time_ms, run_time_ms); + + RunBaseTest(&test); +} + +// Flaky tests, disabled on Mac and Windows due to webrtc:8291. +#if !(defined(WEBRTC_MAC) || defined(WEBRTC_WIN)) +TEST_F(CallPerfTest, Real_Estimated_CaptureNtpTimeWithNetworkDelay) { + BuiltInNetworkBehaviorConfig net_config; + net_config.queue_delay_ms = 100; + // TODO(wu): lower the threshold as the calculation/estimation becomes more + // accurate. + const int kThresholdMs = 100; + const int kStartTimeMs = 10000; + const int kRunTimeMs = 20000; + TestCaptureNtpTime(net_config, kThresholdMs, kStartTimeMs, kRunTimeMs); +} + +TEST_F(CallPerfTest, Real_Estimated_CaptureNtpTimeWithNetworkJitter) { + BuiltInNetworkBehaviorConfig net_config; + net_config.queue_delay_ms = 100; + net_config.delay_standard_deviation_ms = 10; + // TODO(wu): lower the threshold as the calculation/estimation becomes more + // accurate. + const int kThresholdMs = 100; + const int kStartTimeMs = 10000; + const int kRunTimeMs = 20000; + TestCaptureNtpTime(net_config, kThresholdMs, kStartTimeMs, kRunTimeMs); +} +#endif + +TEST_F(CallPerfTest, ReceivesCpuOveruseAndUnderuse) { + // Minimal normal usage at the start, then 30s overuse to allow filter to + // settle, and then 80s underuse to allow plenty of time for rampup again. + test::ScopedFieldTrials fake_overuse_settings( + "WebRTC-ForceSimulatedOveruseIntervalMs/1-30000-80000/"); + + class LoadObserver : public test::SendTest, + public test::FrameGeneratorCapturer::SinkWantsObserver { + public: + LoadObserver() : SendTest(kLongTimeout), test_phase_(TestPhase::kInit) {} + + void OnFrameGeneratorCapturerCreated( + test::FrameGeneratorCapturer* frame_generator_capturer) override { + frame_generator_capturer->SetSinkWantsObserver(this); + // Set a high initial resolution to be sure that we can scale down. + frame_generator_capturer->ChangeResolution(1920, 1080); + } + + // OnSinkWantsChanged is called when FrameGeneratorCapturer::AddOrUpdateSink + // is called. + // TODO(sprang): Add integration test for maintain-framerate mode? + void OnSinkWantsChanged(rtc::VideoSinkInterface<VideoFrame>* sink, + const rtc::VideoSinkWants& wants) override { + // The sink wants can change either because an adaptation happened (i.e. + // the pixels or frame rate changed) or for other reasons, such as encoded + // resolutions being communicated (happens whenever we capture a new frame + // size). In this test, we only care about adaptations. + bool did_adapt = + last_wants_.max_pixel_count != wants.max_pixel_count || + last_wants_.target_pixel_count != wants.target_pixel_count || + last_wants_.max_framerate_fps != wants.max_framerate_fps; + last_wants_ = wants; + if (!did_adapt) { + return; + } + // At kStart expect CPU overuse. Then expect CPU underuse when the encoder + // delay has been decreased. + switch (test_phase_) { + case TestPhase::kInit: + // Max framerate should be set initially. + if (wants.max_framerate_fps != std::numeric_limits<int>::max() && + wants.max_pixel_count == std::numeric_limits<int>::max()) { + test_phase_ = TestPhase::kStart; + } else { + ADD_FAILURE() << "Got unexpected adaptation request, max res = " + << wants.max_pixel_count << ", target res = " + << wants.target_pixel_count.value_or(-1) + << ", max fps = " << wants.max_framerate_fps; + } + break; + case TestPhase::kStart: + if (wants.max_pixel_count < std::numeric_limits<int>::max()) { + // On adapting down, VideoStreamEncoder::VideoSourceProxy will set + // only the max pixel count, leaving the target unset. + test_phase_ = TestPhase::kAdaptedDown; + } else { + ADD_FAILURE() << "Got unexpected adaptation request, max res = " + << wants.max_pixel_count << ", target res = " + << wants.target_pixel_count.value_or(-1) + << ", max fps = " << wants.max_framerate_fps; + } + break; + case TestPhase::kAdaptedDown: + // On adapting up, the adaptation counter will again be at zero, and + // so all constraints will be reset. + if (wants.max_pixel_count == std::numeric_limits<int>::max() && + !wants.target_pixel_count) { + test_phase_ = TestPhase::kAdaptedUp; + observation_complete_.Set(); + } else { + ADD_FAILURE() << "Got unexpected adaptation request, max res = " + << wants.max_pixel_count << ", target res = " + << wants.target_pixel_count.value_or(-1) + << ", max fps = " << wants.max_framerate_fps; + } + break; + case TestPhase::kAdaptedUp: + ADD_FAILURE() << "Got unexpected adaptation request, max res = " + << wants.max_pixel_count << ", target res = " + << wants.target_pixel_count.value_or(-1) + << ", max fps = " << wants.max_framerate_fps; + } + } + + void ModifyVideoConfigs( + VideoSendStream::Config* send_config, + std::vector<VideoReceiveStreamInterface::Config>* receive_configs, + VideoEncoderConfig* encoder_config) override {} + + void PerformTest() override { + EXPECT_TRUE(Wait()) << "Timed out before receiving an overuse callback."; + } + + enum class TestPhase { + kInit, + kStart, + kAdaptedDown, + kAdaptedUp + } test_phase_; + + private: + rtc::VideoSinkWants last_wants_; + } test; + + RunBaseTest(&test); +} + +void CallPerfTest::TestMinTransmitBitrate(bool pad_to_min_bitrate) { + static const int kMaxEncodeBitrateKbps = 30; + static const int kMinTransmitBitrateBps = 150000; + static const int kMinAcceptableTransmitBitrate = 130; + static const int kMaxAcceptableTransmitBitrate = 170; + static const int kNumBitrateObservationsInRange = 100; + static const int kAcceptableBitrateErrorMargin = 15; // +- 7 + class BitrateObserver : public test::EndToEndTest { + public: + explicit BitrateObserver(bool using_min_transmit_bitrate, + TaskQueueBase* task_queue) + : EndToEndTest(kLongTimeout), + send_stream_(nullptr), + converged_(false), + pad_to_min_bitrate_(using_min_transmit_bitrate), + min_acceptable_bitrate_(using_min_transmit_bitrate + ? kMinAcceptableTransmitBitrate + : (kMaxEncodeBitrateKbps - + kAcceptableBitrateErrorMargin / 2)), + max_acceptable_bitrate_(using_min_transmit_bitrate + ? kMaxAcceptableTransmitBitrate + : (kMaxEncodeBitrateKbps + + kAcceptableBitrateErrorMargin / 2)), + num_bitrate_observations_in_range_(0), + task_queue_(task_queue), + task_safety_flag_(PendingTaskSafetyFlag::CreateDetached()) {} + + private: + // TODO(holmer): Run this with a timer instead of once per packet. + Action OnSendRtp(const uint8_t* packet, size_t length) override { + task_queue_->PostTask(SafeTask(task_safety_flag_, [this]() { + VideoSendStream::Stats stats = send_stream_->GetStats(); + + if (!stats.substreams.empty()) { + RTC_DCHECK_EQ(1, stats.substreams.size()); + int bitrate_kbps = + stats.substreams.begin()->second.total_bitrate_bps / 1000; + if (bitrate_kbps > min_acceptable_bitrate_ && + bitrate_kbps < max_acceptable_bitrate_) { + converged_ = true; + ++num_bitrate_observations_in_range_; + if (num_bitrate_observations_in_range_ == + kNumBitrateObservationsInRange) + observation_complete_.Set(); + } + if (converged_) + bitrate_kbps_list_.AddSample(bitrate_kbps); + } + })); + return SEND_PACKET; + } + + void OnVideoStreamsCreated(VideoSendStream* send_stream, + const std::vector<VideoReceiveStreamInterface*>& + receive_streams) override { + send_stream_ = send_stream; + } + + void OnStreamsStopped() override { task_safety_flag_->SetNotAlive(); } + + void ModifyVideoConfigs( + VideoSendStream::Config* send_config, + std::vector<VideoReceiveStreamInterface::Config>* receive_configs, + VideoEncoderConfig* encoder_config) override { + if (pad_to_min_bitrate_) { + encoder_config->min_transmit_bitrate_bps = kMinTransmitBitrateBps; + } else { + RTC_DCHECK_EQ(0, encoder_config->min_transmit_bitrate_bps); + } + } + + void PerformTest() override { + EXPECT_TRUE(Wait()) << "Timeout while waiting for send-bitrate stats."; + GetGlobalMetricsLogger()->LogMetric( + std::string("bitrate_stats_") + + (pad_to_min_bitrate_ ? "min_transmit_bitrate" + : "without_min_transmit_bitrate"), + "bitrate_kbps", bitrate_kbps_list_, Unit::kUnitless, + ImprovementDirection::kNeitherIsBetter); + } + + VideoSendStream* send_stream_; + bool converged_; + const bool pad_to_min_bitrate_; + const int min_acceptable_bitrate_; + const int max_acceptable_bitrate_; + int num_bitrate_observations_in_range_; + SamplesStatsCounter bitrate_kbps_list_; + TaskQueueBase* task_queue_; + rtc::scoped_refptr<PendingTaskSafetyFlag> task_safety_flag_; + } test(pad_to_min_bitrate, task_queue()); + + fake_encoder_max_bitrate_ = kMaxEncodeBitrateKbps; + RunBaseTest(&test); +} + +TEST_F(CallPerfTest, Bitrate_Kbps_PadsToMinTransmitBitrate) { + TestMinTransmitBitrate(true); +} + +TEST_F(CallPerfTest, Bitrate_Kbps_NoPadWithoutMinTransmitBitrate) { + TestMinTransmitBitrate(false); +} + +// TODO(bugs.webrtc.org/8878) +#if defined(WEBRTC_MAC) +#define MAYBE_KeepsHighBitrateWhenReconfiguringSender \ + DISABLED_KeepsHighBitrateWhenReconfiguringSender +#else +#define MAYBE_KeepsHighBitrateWhenReconfiguringSender \ + KeepsHighBitrateWhenReconfiguringSender +#endif +TEST_F(CallPerfTest, MAYBE_KeepsHighBitrateWhenReconfiguringSender) { + static const uint32_t kInitialBitrateKbps = 400; + static const uint32_t kInitialBitrateOverheadKpbs = 6; + static const uint32_t kReconfigureThresholdKbps = 600; + + class VideoStreamFactory + : public VideoEncoderConfig::VideoStreamFactoryInterface { + public: + VideoStreamFactory() {} + + private: + std::vector<VideoStream> CreateEncoderStreams( + int frame_width, + int frame_height, + const webrtc::VideoEncoderConfig& encoder_config) override { + std::vector<VideoStream> streams = + test::CreateVideoStreams(frame_width, frame_height, encoder_config); + streams[0].min_bitrate_bps = 50000; + streams[0].target_bitrate_bps = streams[0].max_bitrate_bps = 2000000; + return streams; + } + }; + + class BitrateObserver : public test::EndToEndTest, public test::FakeEncoder { + public: + explicit BitrateObserver(TaskQueueBase* task_queue) + : EndToEndTest(kDefaultTimeout), + FakeEncoder(Clock::GetRealTimeClock()), + encoder_inits_(0), + last_set_bitrate_kbps_(0), + send_stream_(nullptr), + frame_generator_(nullptr), + encoder_factory_(this), + bitrate_allocator_factory_( + CreateBuiltinVideoBitrateAllocatorFactory()), + task_queue_(task_queue) {} + + int32_t InitEncode(const VideoCodec* config, + const VideoEncoder::Settings& settings) override { + ++encoder_inits_; + if (encoder_inits_ == 1) { + // First time initialization. Frame size is known. + // `expected_bitrate` is affected by bandwidth estimation before the + // first frame arrives to the encoder. + uint32_t expected_bitrate = + last_set_bitrate_kbps_ > 0 + ? last_set_bitrate_kbps_ + : kInitialBitrateKbps - kInitialBitrateOverheadKpbs; + EXPECT_EQ(expected_bitrate, config->startBitrate) + << "Encoder not initialized at expected bitrate."; + EXPECT_EQ(kDefaultWidth, config->width); + EXPECT_EQ(kDefaultHeight, config->height); + } else if (encoder_inits_ == 2) { + EXPECT_EQ(2 * kDefaultWidth, config->width); + EXPECT_EQ(2 * kDefaultHeight, config->height); + EXPECT_GE(last_set_bitrate_kbps_, kReconfigureThresholdKbps); + EXPECT_GT(config->startBitrate, kReconfigureThresholdKbps) + << "Encoder reconfigured with bitrate too far away from last set."; + observation_complete_.Set(); + } + return FakeEncoder::InitEncode(config, settings); + } + + void SetRates(const RateControlParameters& parameters) override { + last_set_bitrate_kbps_ = parameters.bitrate.get_sum_kbps(); + if (encoder_inits_ == 1 && + parameters.bitrate.get_sum_kbps() > kReconfigureThresholdKbps) { + time_to_reconfigure_.Set(); + } + FakeEncoder::SetRates(parameters); + } + + void ModifySenderBitrateConfig( + BitrateConstraints* bitrate_config) override { + bitrate_config->start_bitrate_bps = kInitialBitrateKbps * 1000; + } + + void ModifyVideoConfigs( + VideoSendStream::Config* send_config, + std::vector<VideoReceiveStreamInterface::Config>* receive_configs, + VideoEncoderConfig* encoder_config) override { + send_config->encoder_settings.encoder_factory = &encoder_factory_; + send_config->encoder_settings.bitrate_allocator_factory = + bitrate_allocator_factory_.get(); + encoder_config->max_bitrate_bps = 2 * kReconfigureThresholdKbps * 1000; + encoder_config->video_stream_factory = + rtc::make_ref_counted<VideoStreamFactory>(); + + encoder_config_ = encoder_config->Copy(); + } + + void OnVideoStreamsCreated(VideoSendStream* send_stream, + const std::vector<VideoReceiveStreamInterface*>& + receive_streams) override { + send_stream_ = send_stream; + } + + void OnFrameGeneratorCapturerCreated( + test::FrameGeneratorCapturer* frame_generator_capturer) override { + frame_generator_ = frame_generator_capturer; + } + + void PerformTest() override { + ASSERT_TRUE(time_to_reconfigure_.Wait(kDefaultTimeout)) + << "Timed out before receiving an initial high bitrate."; + frame_generator_->ChangeResolution(kDefaultWidth * 2, kDefaultHeight * 2); + SendTask(task_queue_, [&]() { + send_stream_->ReconfigureVideoEncoder(encoder_config_.Copy()); + }); + EXPECT_TRUE(Wait()) + << "Timed out while waiting for a couple of high bitrate estimates " + "after reconfiguring the send stream."; + } + + private: + rtc::Event time_to_reconfigure_; + int encoder_inits_; + uint32_t last_set_bitrate_kbps_; + VideoSendStream* send_stream_; + test::FrameGeneratorCapturer* frame_generator_; + test::VideoEncoderProxyFactory encoder_factory_; + std::unique_ptr<VideoBitrateAllocatorFactory> bitrate_allocator_factory_; + VideoEncoderConfig encoder_config_; + TaskQueueBase* task_queue_; + } test(task_queue()); + + RunBaseTest(&test); +} + +// Discovers the minimal supported audio+video bitrate. The test bitrate is +// considered supported if Rtt does not go above 400ms with the network +// contrained to the test bitrate. +// +// |test_bitrate_from test_bitrate_to| bitrate constraint range +// `test_bitrate_step` bitrate constraint update step during the test +// |min_bwe max_bwe| BWE range +// `start_bwe` initial BWE +void CallPerfTest::TestMinAudioVideoBitrate(int test_bitrate_from, + int test_bitrate_to, + int test_bitrate_step, + int min_bwe, + int start_bwe, + int max_bwe) { + static const std::string kAudioTrackId = "audio_track_0"; + static constexpr int kOpusBitrateFbBps = 32000; + static constexpr int kBitrateStabilizationMs = 10000; + static constexpr int kBitrateMeasurements = 10; + static constexpr int kBitrateMeasurementMs = 1000; + static constexpr int kShortDelayMs = 10; + static constexpr int kMinGoodRttMs = 400; + + class MinVideoAndAudioBitrateTester : public test::EndToEndTest { + public: + MinVideoAndAudioBitrateTester(int test_bitrate_from, + int test_bitrate_to, + int test_bitrate_step, + int min_bwe, + int start_bwe, + int max_bwe, + TaskQueueBase* task_queue) + : EndToEndTest(), + test_bitrate_from_(test_bitrate_from), + test_bitrate_to_(test_bitrate_to), + test_bitrate_step_(test_bitrate_step), + min_bwe_(min_bwe), + start_bwe_(start_bwe), + max_bwe_(max_bwe), + task_queue_(task_queue) {} + + protected: + BuiltInNetworkBehaviorConfig GetFakeNetworkPipeConfig() const { + BuiltInNetworkBehaviorConfig pipe_config; + pipe_config.link_capacity_kbps = test_bitrate_from_; + return pipe_config; + } + + BuiltInNetworkBehaviorConfig GetSendTransportConfig() const override { + return GetFakeNetworkPipeConfig(); + } + BuiltInNetworkBehaviorConfig GetReceiveTransportConfig() const override { + return GetFakeNetworkPipeConfig(); + } + + void OnTransportCreated( + test::PacketTransport* to_receiver, + SimulatedNetworkInterface* sender_network, + test::PacketTransport* to_sender, + SimulatedNetworkInterface* receiver_network) override { + send_simulated_network_ = sender_network; + receive_simulated_network_ = receiver_network; + } + + void PerformTest() override { + // Quick test mode, just to exercise all the code paths without actually + // caring about performance measurements. + const bool quick_perf_test = + field_trial::IsEnabled("WebRTC-QuickPerfTest"); + int last_passed_test_bitrate = -1; + for (int test_bitrate = test_bitrate_from_; + test_bitrate_from_ < test_bitrate_to_ + ? test_bitrate <= test_bitrate_to_ + : test_bitrate >= test_bitrate_to_; + test_bitrate += test_bitrate_step_) { + BuiltInNetworkBehaviorConfig pipe_config; + pipe_config.link_capacity_kbps = test_bitrate; + send_simulated_network_->SetConfig(pipe_config); + receive_simulated_network_->SetConfig(pipe_config); + + rtc::Thread::SleepMs(quick_perf_test ? kShortDelayMs + : kBitrateStabilizationMs); + + int64_t avg_rtt = 0; + for (int i = 0; i < kBitrateMeasurements; i++) { + Call::Stats call_stats; + SendTask(task_queue_, [this, &call_stats]() { + call_stats = sender_call_->GetStats(); + }); + avg_rtt += call_stats.rtt_ms; + rtc::Thread::SleepMs(quick_perf_test ? kShortDelayMs + : kBitrateMeasurementMs); + } + avg_rtt = avg_rtt / kBitrateMeasurements; + if (avg_rtt > kMinGoodRttMs) { + break; + } else { + last_passed_test_bitrate = test_bitrate; + } + } + EXPECT_GT(last_passed_test_bitrate, -1) + << "Minimum supported bitrate out of the test scope"; + GetGlobalMetricsLogger()->LogSingleValueMetric( + "min_test_bitrate_", "min_bitrate", last_passed_test_bitrate, + Unit::kUnitless, ImprovementDirection::kNeitherIsBetter); + } + + void OnCallsCreated(Call* sender_call, Call* receiver_call) override { + sender_call_ = sender_call; + BitrateConstraints bitrate_config; + bitrate_config.min_bitrate_bps = min_bwe_; + bitrate_config.start_bitrate_bps = start_bwe_; + bitrate_config.max_bitrate_bps = max_bwe_; + sender_call->GetTransportControllerSend()->SetSdpBitrateParameters( + bitrate_config); + } + + size_t GetNumVideoStreams() const override { return 1; } + + size_t GetNumAudioStreams() const override { return 1; } + + void ModifyAudioConfigs(AudioSendStream::Config* send_config, + std::vector<AudioReceiveStreamInterface::Config>* + receive_configs) override { + send_config->send_codec_spec->target_bitrate_bps = + absl::optional<int>(kOpusBitrateFbBps); + } + + private: + const int test_bitrate_from_; + const int test_bitrate_to_; + const int test_bitrate_step_; + const int min_bwe_; + const int start_bwe_; + const int max_bwe_; + SimulatedNetworkInterface* send_simulated_network_; + SimulatedNetworkInterface* receive_simulated_network_; + Call* sender_call_; + TaskQueueBase* const task_queue_; + } test(test_bitrate_from, test_bitrate_to, test_bitrate_step, min_bwe, + start_bwe, max_bwe, task_queue()); + + RunBaseTest(&test); +} + +// TODO(bugs.webrtc.org/8878) +#if defined(WEBRTC_MAC) +#define MAYBE_Min_Bitrate_VideoAndAudio DISABLED_Min_Bitrate_VideoAndAudio +#else +#define MAYBE_Min_Bitrate_VideoAndAudio Min_Bitrate_VideoAndAudio +#endif +TEST_F(CallPerfTest, MAYBE_Min_Bitrate_VideoAndAudio) { + TestMinAudioVideoBitrate(110, 40, -10, 10000, 70000, 200000); +} + +void CallPerfTest::TestEncodeFramerate(VideoEncoderFactory* encoder_factory, + absl::string_view payload_name, + const std::vector<int>& max_framerates) { + static constexpr double kAllowedFpsDiff = 1.5; + static constexpr TimeDelta kMinGetStatsInterval = TimeDelta::Millis(400); + static constexpr TimeDelta kMinRunTime = TimeDelta::Seconds(15); + static constexpr DataRate kMaxBitrate = DataRate::KilobitsPerSec(1000); + + class FramerateObserver + : public test::EndToEndTest, + public test::FrameGeneratorCapturer::SinkWantsObserver { + public: + FramerateObserver(VideoEncoderFactory* encoder_factory, + absl::string_view payload_name, + const std::vector<int>& max_framerates, + TaskQueueBase* task_queue) + : EndToEndTest(kDefaultTimeout), + clock_(Clock::GetRealTimeClock()), + encoder_factory_(encoder_factory), + payload_name_(payload_name), + max_framerates_(max_framerates), + task_queue_(task_queue), + start_time_(clock_->CurrentTime()), + last_getstats_time_(start_time_), + send_stream_(nullptr) {} + + void OnFrameGeneratorCapturerCreated( + test::FrameGeneratorCapturer* frame_generator_capturer) override { + frame_generator_capturer->ChangeResolution(640, 360); + } + + void OnSinkWantsChanged(rtc::VideoSinkInterface<VideoFrame>* sink, + const rtc::VideoSinkWants& wants) override {} + + void ModifySenderBitrateConfig( + BitrateConstraints* bitrate_config) override { + bitrate_config->start_bitrate_bps = kMaxBitrate.bps() / 2; + } + + void OnVideoStreamsCreated(VideoSendStream* send_stream, + const std::vector<VideoReceiveStreamInterface*>& + receive_streams) override { + send_stream_ = send_stream; + } + + size_t GetNumVideoStreams() const override { + return max_framerates_.size(); + } + + void ModifyVideoConfigs( + VideoSendStream::Config* send_config, + std::vector<VideoReceiveStreamInterface::Config>* receive_configs, + VideoEncoderConfig* encoder_config) override { + send_config->encoder_settings.encoder_factory = encoder_factory_; + send_config->rtp.payload_name = payload_name_; + send_config->rtp.payload_type = test::CallTest::kVideoSendPayloadType; + encoder_config->video_format.name = payload_name_; + encoder_config->codec_type = PayloadStringToCodecType(payload_name_); + encoder_config->max_bitrate_bps = kMaxBitrate.bps(); + for (size_t i = 0; i < max_framerates_.size(); ++i) { + encoder_config->simulcast_layers[i].max_framerate = max_framerates_[i]; + configured_framerates_[send_config->rtp.ssrcs[i]] = max_framerates_[i]; + } + } + + void PerformTest() override { + EXPECT_TRUE(Wait()) << "Timeout while waiting for framerate stats."; + } + + void VerifyStats() const { + const bool quick_perf_test = + field_trial::IsEnabled("WebRTC-QuickPerfTest"); + double input_fps = 0.0; + for (const auto& configured_framerate : configured_framerates_) { + input_fps = std::max(configured_framerate.second, input_fps); + } + for (const auto& encode_frame_rate_list : encode_frame_rate_lists_) { + const SamplesStatsCounter& values = encode_frame_rate_list.second; + GetGlobalMetricsLogger()->LogMetric( + "substream_fps", "encode_frame_rate", values, Unit::kUnitless, + ImprovementDirection::kNeitherIsBetter); + if (values.IsEmpty()) { + continue; + } + double average_fps = values.GetAverage(); + uint32_t ssrc = encode_frame_rate_list.first; + double expected_fps = configured_framerates_.find(ssrc)->second; + if (quick_perf_test && expected_fps != input_fps) + EXPECT_NEAR(expected_fps, average_fps, kAllowedFpsDiff); + } + } + + Action OnSendRtp(const uint8_t* packet, size_t length) override { + const Timestamp now = clock_->CurrentTime(); + if (now - last_getstats_time_ > kMinGetStatsInterval) { + last_getstats_time_ = now; + task_queue_->PostTask([this, now]() { + VideoSendStream::Stats stats = send_stream_->GetStats(); + for (const auto& stat : stats.substreams) { + encode_frame_rate_lists_[stat.first].AddSample( + stat.second.encode_frame_rate); + } + if (now - start_time_ > kMinRunTime) { + VerifyStats(); + observation_complete_.Set(); + } + }); + } + return SEND_PACKET; + } + + Clock* const clock_; + VideoEncoderFactory* const encoder_factory_; + const std::string payload_name_; + const std::vector<int> max_framerates_; + TaskQueueBase* const task_queue_; + const Timestamp start_time_; + Timestamp last_getstats_time_; + VideoSendStream* send_stream_; + std::map<uint32_t, SamplesStatsCounter> encode_frame_rate_lists_; + std::map<uint32_t, double> configured_framerates_; + } test(encoder_factory, payload_name, max_framerates, task_queue()); + + RunBaseTest(&test); +} + +TEST_F(CallPerfTest, TestEncodeFramerateVp8Simulcast) { + InternalEncoderFactory internal_encoder_factory; + test::FunctionVideoEncoderFactory encoder_factory( + [&internal_encoder_factory]() { + return std::make_unique<SimulcastEncoderAdapter>( + &internal_encoder_factory, SdpVideoFormat("VP8")); + }); + + TestEncodeFramerate(&encoder_factory, "VP8", + /*max_framerates=*/{20, 30}); +} + +TEST_F(CallPerfTest, TestEncodeFramerateVp8SimulcastLowerInputFps) { + InternalEncoderFactory internal_encoder_factory; + test::FunctionVideoEncoderFactory encoder_factory( + [&internal_encoder_factory]() { + return std::make_unique<SimulcastEncoderAdapter>( + &internal_encoder_factory, SdpVideoFormat("VP8")); + }); + + TestEncodeFramerate(&encoder_factory, "VP8", + /*max_framerates=*/{14, 20}); +} + +} // namespace webrtc |