| /* | 
 |  *  Copyright 2016 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 "video/receive_statistics_proxy.h" | 
 |  | 
 | #include <limits> | 
 | #include <memory> | 
 | #include <utility> | 
 |  | 
 | #include "api/video/i420_buffer.h" | 
 | #include "api/video/video_frame.h" | 
 | #include "api/video/video_rotation.h" | 
 | #include "modules/video_coding/include/video_codec_interface.h" | 
 | #include "system_wrappers/include/metrics.h" | 
 | #include "test/gtest.h" | 
 |  | 
 | namespace webrtc { | 
 | namespace { | 
 | const int64_t kFreqOffsetProcessIntervalInMs = 40000; | 
 | const uint32_t kLocalSsrc = 123; | 
 | const uint32_t kRemoteSsrc = 456; | 
 | const int kMinRequiredSamples = 200; | 
 | const int kWidth = 1280; | 
 | const int kHeight = 720; | 
 |  | 
 | }  // namespace | 
 |  | 
 | // TODO(sakal): ReceiveStatisticsProxy is lacking unittesting. | 
 | class ReceiveStatisticsProxyTest | 
 |     : public ::testing::TestWithParam<webrtc::VideoContentType> { | 
 |  public: | 
 |   ReceiveStatisticsProxyTest() : fake_clock_(1234), config_(GetTestConfig()) {} | 
 |   virtual ~ReceiveStatisticsProxyTest() {} | 
 |  | 
 |  protected: | 
 |   virtual void SetUp() { | 
 |     metrics::Reset(); | 
 |     statistics_proxy_.reset(new ReceiveStatisticsProxy(&config_, &fake_clock_)); | 
 |   } | 
 |  | 
 |   VideoReceiveStream::Config GetTestConfig() { | 
 |     VideoReceiveStream::Config config(nullptr); | 
 |     config.rtp.local_ssrc = kLocalSsrc; | 
 |     config.rtp.remote_ssrc = kRemoteSsrc; | 
 |     return config; | 
 |   } | 
 |  | 
 |   void InsertFirstRtpPacket(uint32_t ssrc) { | 
 |     StreamDataCounters counters; | 
 |     counters.first_packet_time_ms = fake_clock_.TimeInMilliseconds(); | 
 |     statistics_proxy_->DataCountersUpdated(counters, ssrc); | 
 |   } | 
 |  | 
 |   VideoFrame CreateFrame(int width, int height) { | 
 |     return CreateVideoFrame(width, height, 0); | 
 |   } | 
 |  | 
 |   VideoFrame CreateFrameWithRenderTimeMs(int64_t render_time_ms) { | 
 |     return CreateVideoFrame(kWidth, kHeight, render_time_ms); | 
 |   } | 
 |  | 
 |   VideoFrame CreateVideoFrame(int width, int height, int64_t render_time_ms) { | 
 |     VideoFrame frame(I420Buffer::Create(width, height), 0, render_time_ms, | 
 |                      kVideoRotation_0); | 
 |     frame.set_ntp_time_ms(fake_clock_.CurrentNtpInMilliseconds()); | 
 |     return frame; | 
 |   } | 
 |  | 
 |   SimulatedClock fake_clock_; | 
 |   const VideoReceiveStream::Config config_; | 
 |   std::unique_ptr<ReceiveStatisticsProxy> statistics_proxy_; | 
 | }; | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, OnDecodedFrameIncreasesFramesDecoded) { | 
 |   EXPECT_EQ(0u, statistics_proxy_->GetStats().frames_decoded); | 
 |   for (uint32_t i = 1; i <= 3; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       VideoContentType::UNSPECIFIED); | 
 |     EXPECT_EQ(i, statistics_proxy_->GetStats().frames_decoded); | 
 |   } | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, DecodedFpsIsReported) { | 
 |   const int kFps = 20; | 
 |   const int kRequiredSamples = metrics::kMinRunTimeInSeconds * kFps; | 
 |   for (int i = 0; i < kRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::optional<uint8_t>(), kWidth, | 
 |                                       kHeight, VideoContentType::UNSPECIFIED); | 
 |     fake_clock_.AdvanceTimeMilliseconds(1000 / kFps); | 
 |   } | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.DecodedFramesPerSecond")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.DecodedFramesPerSecond", kFps)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, DecodedFpsIsNotReportedForTooFewSamples) { | 
 |   const int kFps = 20; | 
 |   const int kRequiredSamples = metrics::kMinRunTimeInSeconds * kFps; | 
 |   for (int i = 0; i < kRequiredSamples - 1; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::optional<uint8_t>(), kWidth, | 
 |                                       kHeight, VideoContentType::UNSPECIFIED); | 
 |     fake_clock_.AdvanceTimeMilliseconds(1000 / kFps); | 
 |   } | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.DecodedFramesPerSecond")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, DecodedFpsIsReportedWithQpReset) { | 
 |   const int kFps1 = 10; | 
 |   for (int i = 0; i < metrics::kMinRunTimeInSeconds * kFps1; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::optional<uint8_t>(), kWidth, | 
 |                                       kHeight, VideoContentType::UNSPECIFIED); | 
 |     fake_clock_.AdvanceTimeMilliseconds(1000 / kFps1); | 
 |   } | 
 |   // First QP value received, resets frames decoded. | 
 |   const int kFps2 = 20; | 
 |   for (int i = 0; i < metrics::kMinRunTimeInSeconds * kFps2; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::optional<uint8_t>(1u), kWidth, | 
 |                                       kHeight, VideoContentType::UNSPECIFIED); | 
 |     fake_clock_.AdvanceTimeMilliseconds(1000 / kFps2); | 
 |   } | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.DecodedFramesPerSecond")); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumEvents("WebRTC.Video.DecodedFramesPerSecond", kFps2)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, OnDecodedFrameWithQpResetsFramesDecoded) { | 
 |   EXPECT_EQ(0u, statistics_proxy_->GetStats().frames_decoded); | 
 |   for (uint32_t i = 1; i <= 3; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       VideoContentType::UNSPECIFIED); | 
 |     EXPECT_EQ(i, statistics_proxy_->GetStats().frames_decoded); | 
 |   } | 
 |   statistics_proxy_->OnDecodedFrame(1u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(1u, statistics_proxy_->GetStats().frames_decoded); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, OnDecodedFrameIncreasesQpSum) { | 
 |   EXPECT_EQ(absl::nullopt, statistics_proxy_->GetStats().qp_sum); | 
 |   statistics_proxy_->OnDecodedFrame(3u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(3u, statistics_proxy_->GetStats().qp_sum); | 
 |   statistics_proxy_->OnDecodedFrame(127u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(130u, statistics_proxy_->GetStats().qp_sum); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, ReportsContentType) { | 
 |   const std::string kRealtimeString("realtime"); | 
 |   const std::string kScreenshareString("screen"); | 
 |   EXPECT_EQ(kRealtimeString, videocontenttypehelpers::ToString( | 
 |                             statistics_proxy_->GetStats().content_type)); | 
 |   statistics_proxy_->OnDecodedFrame(3u, kWidth, kHeight, | 
 |                                     VideoContentType::SCREENSHARE); | 
 |   EXPECT_EQ(kScreenshareString, videocontenttypehelpers::ToString( | 
 |                           statistics_proxy_->GetStats().content_type)); | 
 |   statistics_proxy_->OnDecodedFrame(3u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(kRealtimeString, videocontenttypehelpers::ToString( | 
 |                             statistics_proxy_->GetStats().content_type)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, ReportsMaxInterframeDelay) { | 
 |   const int64_t kInterframeDelayMs1 = 100; | 
 |   const int64_t kInterframeDelayMs2 = 200; | 
 |   const int64_t kInterframeDelayMs3 = 100; | 
 |   EXPECT_EQ(-1, statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |   statistics_proxy_->OnDecodedFrame(3u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(-1, statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |  | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterframeDelayMs1); | 
 |   statistics_proxy_->OnDecodedFrame(127u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(kInterframeDelayMs1, | 
 |             statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |  | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterframeDelayMs2); | 
 |   statistics_proxy_->OnDecodedFrame(127u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(kInterframeDelayMs2, | 
 |             statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |  | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterframeDelayMs3); | 
 |   statistics_proxy_->OnDecodedFrame(127u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   // kInterframeDelayMs3 is smaller than kInterframeDelayMs2. | 
 |   EXPECT_EQ(kInterframeDelayMs2, | 
 |             statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, ReportInterframeDelayInWindow) { | 
 |   const int64_t kInterframeDelayMs1 = 900; | 
 |   const int64_t kInterframeDelayMs2 = 750; | 
 |   const int64_t kInterframeDelayMs3 = 700; | 
 |   EXPECT_EQ(-1, statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |   statistics_proxy_->OnDecodedFrame(3u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(-1, statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |  | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterframeDelayMs1); | 
 |   statistics_proxy_->OnDecodedFrame(127u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(kInterframeDelayMs1, | 
 |             statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |  | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterframeDelayMs2); | 
 |   statistics_proxy_->OnDecodedFrame(127u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   // Still first delay is the maximum | 
 |   EXPECT_EQ(kInterframeDelayMs1, | 
 |             statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 |  | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterframeDelayMs3); | 
 |   statistics_proxy_->OnDecodedFrame(127u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   // Now the first sample is out of the window, so the second is the maximum. | 
 |   EXPECT_EQ(kInterframeDelayMs2, | 
 |             statistics_proxy_->GetStats().interframe_delay_max_ms); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, OnDecodedFrameWithoutQpQpSumWontExist) { | 
 |   EXPECT_EQ(absl::nullopt, statistics_proxy_->GetStats().qp_sum); | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(absl::nullopt, statistics_proxy_->GetStats().qp_sum); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, OnDecodedFrameWithoutQpResetsQpSum) { | 
 |   EXPECT_EQ(absl::nullopt, statistics_proxy_->GetStats().qp_sum); | 
 |   statistics_proxy_->OnDecodedFrame(3u, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(3u, statistics_proxy_->GetStats().qp_sum); | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |   EXPECT_EQ(absl::nullopt, statistics_proxy_->GetStats().qp_sum); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, OnRenderedFrameIncreasesFramesRendered) { | 
 |   EXPECT_EQ(0u, statistics_proxy_->GetStats().frames_rendered); | 
 |   webrtc::VideoFrame frame(webrtc::I420Buffer::Create(1, 1), 0, 0, | 
 |                            webrtc::kVideoRotation_0); | 
 |   for (uint32_t i = 1; i <= 3; ++i) { | 
 |     statistics_proxy_->OnRenderedFrame(frame); | 
 |     EXPECT_EQ(i, statistics_proxy_->GetStats().frames_rendered); | 
 |   } | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsSsrc) { | 
 |   EXPECT_EQ(kRemoteSsrc, statistics_proxy_->GetStats().ssrc); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsIncomingPayloadType) { | 
 |   const int kPayloadType = 111; | 
 |   statistics_proxy_->OnIncomingPayloadType(kPayloadType); | 
 |   EXPECT_EQ(kPayloadType, statistics_proxy_->GetStats().current_payload_type); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsDecoderImplementationName) { | 
 |   const char* kName = "decoderName"; | 
 |   statistics_proxy_->OnDecoderImplementationName(kName); | 
 |   EXPECT_STREQ( | 
 |       kName, statistics_proxy_->GetStats().decoder_implementation_name.c_str()); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsOnCompleteFrame) { | 
 |   const int kFrameSizeBytes = 1000; | 
 |   statistics_proxy_->OnCompleteFrame(true, kFrameSizeBytes, | 
 |                                      VideoContentType::UNSPECIFIED); | 
 |   VideoReceiveStream::Stats stats = statistics_proxy_->GetStats(); | 
 |   EXPECT_EQ(1, stats.network_frame_rate); | 
 |   EXPECT_EQ(1, stats.frame_counts.key_frames); | 
 |   EXPECT_EQ(0, stats.frame_counts.delta_frames); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsDecodeTimingStats) { | 
 |   const int kDecodeMs = 1; | 
 |   const int kMaxDecodeMs = 2; | 
 |   const int kCurrentDelayMs = 3; | 
 |   const int kTargetDelayMs = 4; | 
 |   const int kJitterBufferMs = 5; | 
 |   const int kMinPlayoutDelayMs = 6; | 
 |   const int kRenderDelayMs = 7; | 
 |   const int64_t kRttMs = 8; | 
 |   statistics_proxy_->OnRttUpdate(kRttMs, 0); | 
 |   statistics_proxy_->OnFrameBufferTimingsUpdated( | 
 |       kDecodeMs, kMaxDecodeMs, kCurrentDelayMs, kTargetDelayMs, kJitterBufferMs, | 
 |       kMinPlayoutDelayMs, kRenderDelayMs); | 
 |   VideoReceiveStream::Stats stats = statistics_proxy_->GetStats(); | 
 |   EXPECT_EQ(kDecodeMs, stats.decode_ms); | 
 |   EXPECT_EQ(kMaxDecodeMs, stats.max_decode_ms); | 
 |   EXPECT_EQ(kCurrentDelayMs, stats.current_delay_ms); | 
 |   EXPECT_EQ(kTargetDelayMs, stats.target_delay_ms); | 
 |   EXPECT_EQ(kJitterBufferMs, stats.jitter_buffer_ms); | 
 |   EXPECT_EQ(kMinPlayoutDelayMs, stats.min_playout_delay_ms); | 
 |   EXPECT_EQ(kRenderDelayMs, stats.render_delay_ms); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsRtcpPacketTypeCounts) { | 
 |   const uint32_t kFirPackets = 33; | 
 |   const uint32_t kPliPackets = 44; | 
 |   const uint32_t kNackPackets = 55; | 
 |   RtcpPacketTypeCounter counter; | 
 |   counter.fir_packets = kFirPackets; | 
 |   counter.pli_packets = kPliPackets; | 
 |   counter.nack_packets = kNackPackets; | 
 |   statistics_proxy_->RtcpPacketTypesCounterUpdated(kRemoteSsrc, counter); | 
 |   VideoReceiveStream::Stats stats = statistics_proxy_->GetStats(); | 
 |   EXPECT_EQ(kFirPackets, stats.rtcp_packet_type_counts.fir_packets); | 
 |   EXPECT_EQ(kPliPackets, stats.rtcp_packet_type_counts.pli_packets); | 
 |   EXPECT_EQ(kNackPackets, stats.rtcp_packet_type_counts.nack_packets); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        GetStatsReportsNoRtcpPacketTypeCountsForUnknownSsrc) { | 
 |   RtcpPacketTypeCounter counter; | 
 |   counter.fir_packets = 33; | 
 |   statistics_proxy_->RtcpPacketTypesCounterUpdated(kRemoteSsrc + 1, counter); | 
 |   EXPECT_EQ(0u, | 
 |             statistics_proxy_->GetStats().rtcp_packet_type_counts.fir_packets); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsFrameCounts) { | 
 |   const int kKeyFrames = 3; | 
 |   const int kDeltaFrames = 22; | 
 |   FrameCounts frame_counts; | 
 |   frame_counts.key_frames = kKeyFrames; | 
 |   frame_counts.delta_frames = kDeltaFrames; | 
 |   statistics_proxy_->OnFrameCountsUpdated(frame_counts); | 
 |   VideoReceiveStream::Stats stats = statistics_proxy_->GetStats(); | 
 |   EXPECT_EQ(kKeyFrames, stats.frame_counts.key_frames); | 
 |   EXPECT_EQ(kDeltaFrames, stats.frame_counts.delta_frames); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsDiscardedPackets) { | 
 |   const int kDiscardedPackets = 12; | 
 |   statistics_proxy_->OnDiscardedPacketsUpdated(kDiscardedPackets); | 
 |   EXPECT_EQ(kDiscardedPackets, statistics_proxy_->GetStats().discarded_packets); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsRtcpStats) { | 
 |   const uint8_t kFracLost = 0; | 
 |   const int32_t kCumLost = 1; | 
 |   const uint32_t kExtSeqNum = 10; | 
 |   const uint32_t kJitter = 4; | 
 |  | 
 |   RtcpStatistics rtcp_stats; | 
 |   rtcp_stats.fraction_lost = kFracLost; | 
 |   rtcp_stats.packets_lost = kCumLost; | 
 |   rtcp_stats.extended_highest_sequence_number = kExtSeqNum; | 
 |   rtcp_stats.jitter = kJitter; | 
 |   statistics_proxy_->StatisticsUpdated(rtcp_stats, kRemoteSsrc); | 
 |  | 
 |   VideoReceiveStream::Stats stats = statistics_proxy_->GetStats(); | 
 |   EXPECT_EQ(kFracLost, stats.rtcp_stats.fraction_lost); | 
 |   EXPECT_EQ(kCumLost, stats.rtcp_stats.packets_lost); | 
 |   EXPECT_EQ(kExtSeqNum, stats.rtcp_stats.extended_highest_sequence_number); | 
 |   EXPECT_EQ(kJitter, stats.rtcp_stats.jitter); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsCName) { | 
 |   const char* kName = "cName"; | 
 |   statistics_proxy_->CNameChanged(kName, kRemoteSsrc); | 
 |   EXPECT_STREQ(kName, statistics_proxy_->GetStats().c_name.c_str()); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsNoCNameForUnknownSsrc) { | 
 |   const char* kName = "cName"; | 
 |   statistics_proxy_->CNameChanged(kName, kRemoteSsrc + 1); | 
 |   EXPECT_STREQ("", statistics_proxy_->GetStats().c_name.c_str()); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        ReportsLongestTimingFrameInfo) { | 
 |   const int64_t kShortEndToEndDelay = 10; | 
 |   const int64_t kMedEndToEndDelay = 20; | 
 |   const int64_t kLongEndToEndDelay = 100; | 
 |   const uint32_t kExpectedRtpTimestamp = 2; | 
 |   TimingFrameInfo info; | 
 |   absl::optional<TimingFrameInfo> result; | 
 |   info.rtp_timestamp = kExpectedRtpTimestamp - 1; | 
 |   info.capture_time_ms = 0; | 
 |   info.decode_finish_ms = kShortEndToEndDelay; | 
 |   statistics_proxy_->OnTimingFrameInfoUpdated(info); | 
 |   info.rtp_timestamp = | 
 |       kExpectedRtpTimestamp;  // this frame should be reported in the end. | 
 |   info.capture_time_ms = 0; | 
 |   info.decode_finish_ms = kLongEndToEndDelay; | 
 |   statistics_proxy_->OnTimingFrameInfoUpdated(info); | 
 |   info.rtp_timestamp = kExpectedRtpTimestamp + 1; | 
 |   info.capture_time_ms = 0; | 
 |   info.decode_finish_ms = kMedEndToEndDelay; | 
 |   statistics_proxy_->OnTimingFrameInfoUpdated(info); | 
 |   result = statistics_proxy_->GetStats().timing_frame_info; | 
 |   EXPECT_TRUE(result); | 
 |   EXPECT_EQ(kExpectedRtpTimestamp, result->rtp_timestamp); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, RespectsReportingIntervalForTimingFrames) { | 
 |   TimingFrameInfo info; | 
 |   const int64_t kShortEndToEndDelay = 10; | 
 |   const uint32_t kExpectedRtpTimestamp = 2; | 
 |   const int64_t kShortDelayMs = 1000; | 
 |   const int64_t kLongDelayMs = 10000; | 
 |   absl::optional<TimingFrameInfo> result; | 
 |   info.rtp_timestamp = kExpectedRtpTimestamp; | 
 |   info.capture_time_ms = 0; | 
 |   info.decode_finish_ms = kShortEndToEndDelay; | 
 |   statistics_proxy_->OnTimingFrameInfoUpdated(info); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kShortDelayMs); | 
 |   result = statistics_proxy_->GetStats().timing_frame_info; | 
 |   EXPECT_TRUE(result); | 
 |   EXPECT_EQ(kExpectedRtpTimestamp, result->rtp_timestamp); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kLongDelayMs); | 
 |   result = statistics_proxy_->GetStats().timing_frame_info; | 
 |   EXPECT_FALSE(result); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, LifetimeHistogramIsUpdated) { | 
 |   const int64_t kTimeSec = 3; | 
 |   fake_clock_.AdvanceTimeMilliseconds(kTimeSec * 1000); | 
 |   // Need at least one frame to report stream lifetime. | 
 |   statistics_proxy_->OnCompleteFrame(true, 1000, VideoContentType::UNSPECIFIED); | 
 |   // Histograms are updated when the statistics_proxy_ is deleted. | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumSamples("WebRTC.Video.ReceiveStreamLifetimeInSeconds")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.ReceiveStreamLifetimeInSeconds", | 
 |                                   kTimeSec)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        LifetimeHistogramNotReportedForEmptyStreams) { | 
 |   const int64_t kTimeSec = 3; | 
 |   fake_clock_.AdvanceTimeMilliseconds(kTimeSec * 1000); | 
 |   // No frames received. | 
 |   // Histograms are updated when the statistics_proxy_ is deleted. | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, | 
 |             metrics::NumSamples("WebRTC.Video.ReceiveStreamLifetimeInSeconds")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, BadCallHistogramsAreUpdated) { | 
 |   // Based on the tuning parameters this will produce 7 uncertain states, | 
 |   // then 10 certainly bad states. There has to be 10 certain states before | 
 |   // any histograms are recorded. | 
 |   const int kNumBadSamples = 17; | 
 |  | 
 |   StreamDataCounters counters; | 
 |   counters.first_packet_time_ms = fake_clock_.TimeInMilliseconds(); | 
 |   statistics_proxy_->DataCountersUpdated(counters, config_.rtp.remote_ssrc); | 
 |  | 
 |   for (int i = 0; i < kNumBadSamples; ++i) { | 
 |     // Since OnRenderedFrame is never called the fps in each sample will be 0, | 
 |     // i.e. bad | 
 |     fake_clock_.AdvanceTimeMilliseconds(1000); | 
 |     statistics_proxy_->OnIncomingRate(0, 0); | 
 |   } | 
 |   // Histograms are updated when the statistics_proxy_ is deleted. | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.BadCall.Any")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.BadCall.Any", 100)); | 
 |  | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.BadCall.FrameRate")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.BadCall.FrameRate", 100)); | 
 |  | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.BadCall.FrameRateVariance")); | 
 |  | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.BadCall.Qp")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, PacketLossHistogramIsUpdated) { | 
 |   const uint32_t kCumLost1 = 1; | 
 |   const uint32_t kExtSeqNum1 = 10; | 
 |   const uint32_t kCumLost2 = 2; | 
 |   const uint32_t kExtSeqNum2 = 20; | 
 |  | 
 |   // One report block received. | 
 |   RtcpStatistics rtcp_stats1; | 
 |   rtcp_stats1.packets_lost = kCumLost1; | 
 |   rtcp_stats1.extended_highest_sequence_number = kExtSeqNum1; | 
 |   statistics_proxy_->StatisticsUpdated(rtcp_stats1, kRemoteSsrc); | 
 |  | 
 |   // Two report blocks received. | 
 |   RtcpStatistics rtcp_stats2; | 
 |   rtcp_stats2.packets_lost = kCumLost2; | 
 |   rtcp_stats2.extended_highest_sequence_number = kExtSeqNum2; | 
 |   statistics_proxy_->StatisticsUpdated(rtcp_stats2, kRemoteSsrc); | 
 |  | 
 |   // Two received report blocks but min run time has not passed. | 
 |   fake_clock_.AdvanceTimeMilliseconds(metrics::kMinRunTimeInSeconds * 1000 - 1); | 
 |   SetUp();  // Reset stat proxy causes histograms to be updated. | 
 |   EXPECT_EQ(0, | 
 |             metrics::NumSamples("WebRTC.Video.ReceivedPacketsLostInPercent")); | 
 |  | 
 |   // Two report blocks received. | 
 |   statistics_proxy_->StatisticsUpdated(rtcp_stats1, kRemoteSsrc); | 
 |   statistics_proxy_->StatisticsUpdated(rtcp_stats2, kRemoteSsrc); | 
 |  | 
 |   // Two received report blocks and min run time has passed. | 
 |   fake_clock_.AdvanceTimeMilliseconds(metrics::kMinRunTimeInSeconds * 1000); | 
 |   SetUp(); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumSamples("WebRTC.Video.ReceivedPacketsLostInPercent")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.ReceivedPacketsLostInPercent", | 
 |                                   (kCumLost2 - kCumLost1) * 100 / | 
 |                                       (kExtSeqNum2 - kExtSeqNum1))); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        PacketLossHistogramIsNotUpdatedIfLessThanTwoReportBlocksAreReceived) { | 
 |   RtcpStatistics rtcp_stats1; | 
 |   rtcp_stats1.packets_lost = 1; | 
 |   rtcp_stats1.extended_highest_sequence_number = 10; | 
 |  | 
 |   // Min run time has passed but no received report block. | 
 |   fake_clock_.AdvanceTimeMilliseconds(metrics::kMinRunTimeInSeconds * 1000); | 
 |   SetUp();  // Reset stat proxy causes histograms to be updated. | 
 |   EXPECT_EQ(0, | 
 |             metrics::NumSamples("WebRTC.Video.ReceivedPacketsLostInPercent")); | 
 |  | 
 |   // Min run time has passed but only one received report block. | 
 |   statistics_proxy_->StatisticsUpdated(rtcp_stats1, kRemoteSsrc); | 
 |   fake_clock_.AdvanceTimeMilliseconds(metrics::kMinRunTimeInSeconds * 1000); | 
 |   SetUp(); | 
 |   EXPECT_EQ(0, | 
 |             metrics::NumSamples("WebRTC.Video.ReceivedPacketsLostInPercent")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsAvSyncOffset) { | 
 |   const int64_t kSyncOffsetMs = 22; | 
 |   const double kFreqKhz = 90.0; | 
 |   EXPECT_EQ(std::numeric_limits<int>::max(), | 
 |             statistics_proxy_->GetStats().sync_offset_ms); | 
 |   statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz); | 
 |   EXPECT_EQ(kSyncOffsetMs, statistics_proxy_->GetStats().sync_offset_ms); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, AvSyncOffsetHistogramIsUpdated) { | 
 |   const int64_t kSyncOffsetMs = 22; | 
 |   const double kFreqKhz = 90.0; | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) | 
 |     statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz); | 
 |   // Histograms are updated when the statistics_proxy_ is deleted. | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.AVSyncOffsetInMs")); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumEvents("WebRTC.Video.AVSyncOffsetInMs", kSyncOffsetMs)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, RtpToNtpFrequencyOffsetHistogramIsUpdated) { | 
 |   const int64_t kSyncOffsetMs = 22; | 
 |   const double kFreqKhz = 90.0; | 
 |   statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz); | 
 |   statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz + 2.2); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kFreqOffsetProcessIntervalInMs); | 
 |   // Process interval passed, max diff: 2. | 
 |   statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz + 1.1); | 
 |   statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz - 4.2); | 
 |   statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz - 0.9); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kFreqOffsetProcessIntervalInMs); | 
 |   // Process interval passed, max diff: 4. | 
 |   statistics_proxy_->OnSyncOffsetUpdated(kSyncOffsetMs, kFreqKhz); | 
 |   statistics_proxy_.reset(); | 
 |   // Average reported: (2 + 4) / 2 = 3. | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.RtpToNtpFreqOffsetInKhz")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.RtpToNtpFreqOffsetInKhz", 3)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, Vp8QpHistogramIsUpdated) { | 
 |   const int kQp = 22; | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) | 
 |     statistics_proxy_->OnPreDecode(kVideoCodecVP8, kQp); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.Decoded.Vp8.Qp")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.Decoded.Vp8.Qp", kQp)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, Vp8QpHistogramIsNotUpdatedForTooFewSamples) { | 
 |   const int kQp = 22; | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples - 1; ++i) | 
 |     statistics_proxy_->OnPreDecode(kVideoCodecVP8, kQp); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.Decoded.Vp8.Qp")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, Vp8QpHistogramIsNotUpdatedIfNoQpValue) { | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) | 
 |     statistics_proxy_->OnPreDecode(kVideoCodecVP8, -1); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.Decoded.Vp8.Qp")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        KeyFrameHistogramNotUpdatedForTooFewSamples) { | 
 |   const bool kIsKeyFrame = false; | 
 |   const int kFrameSizeBytes = 1000; | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples - 1; ++i) | 
 |     statistics_proxy_->OnCompleteFrame(kIsKeyFrame, kFrameSizeBytes, | 
 |                                        VideoContentType::UNSPECIFIED); | 
 |  | 
 |   EXPECT_EQ(0, statistics_proxy_->GetStats().frame_counts.key_frames); | 
 |   EXPECT_EQ(kMinRequiredSamples - 1, | 
 |             statistics_proxy_->GetStats().frame_counts.delta_frames); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.KeyFramesReceivedInPermille")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        KeyFrameHistogramUpdatedForMinRequiredSamples) { | 
 |   const bool kIsKeyFrame = false; | 
 |   const int kFrameSizeBytes = 1000; | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) | 
 |     statistics_proxy_->OnCompleteFrame(kIsKeyFrame, kFrameSizeBytes, | 
 |                                        VideoContentType::UNSPECIFIED); | 
 |  | 
 |   EXPECT_EQ(0, statistics_proxy_->GetStats().frame_counts.key_frames); | 
 |   EXPECT_EQ(kMinRequiredSamples, | 
 |             statistics_proxy_->GetStats().frame_counts.delta_frames); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.KeyFramesReceivedInPermille")); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumEvents("WebRTC.Video.KeyFramesReceivedInPermille", 0)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, KeyFrameHistogramIsUpdated) { | 
 |   const int kFrameSizeBytes = 1000; | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) | 
 |     statistics_proxy_->OnCompleteFrame(true, kFrameSizeBytes, | 
 |                                        VideoContentType::UNSPECIFIED); | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) | 
 |     statistics_proxy_->OnCompleteFrame(false, kFrameSizeBytes, | 
 |                                        VideoContentType::UNSPECIFIED); | 
 |  | 
 |   EXPECT_EQ(kMinRequiredSamples, | 
 |             statistics_proxy_->GetStats().frame_counts.key_frames); | 
 |   EXPECT_EQ(kMinRequiredSamples, | 
 |             statistics_proxy_->GetStats().frame_counts.delta_frames); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.KeyFramesReceivedInPermille")); | 
 |   EXPECT_EQ( | 
 |       1, metrics::NumEvents("WebRTC.Video.KeyFramesReceivedInPermille", 500)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, TimingHistogramsNotUpdatedForTooFewSamples) { | 
 |   const int kDecodeMs = 1; | 
 |   const int kMaxDecodeMs = 2; | 
 |   const int kCurrentDelayMs = 3; | 
 |   const int kTargetDelayMs = 4; | 
 |   const int kJitterBufferMs = 5; | 
 |   const int kMinPlayoutDelayMs = 6; | 
 |   const int kRenderDelayMs = 7; | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples - 1; ++i) { | 
 |     statistics_proxy_->OnFrameBufferTimingsUpdated( | 
 |         kDecodeMs, kMaxDecodeMs, kCurrentDelayMs, kTargetDelayMs, | 
 |         kJitterBufferMs, kMinPlayoutDelayMs, kRenderDelayMs); | 
 |   } | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.DecodeTimeInMs")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.JitterBufferDelayInMs")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.TargetDelayInMs")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.CurrentDelayInMs")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.OnewayDelayInMs")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, TimingHistogramsAreUpdated) { | 
 |   const int kDecodeMs = 1; | 
 |   const int kMaxDecodeMs = 2; | 
 |   const int kCurrentDelayMs = 3; | 
 |   const int kTargetDelayMs = 4; | 
 |   const int kJitterBufferMs = 5; | 
 |   const int kMinPlayoutDelayMs = 6; | 
 |   const int kRenderDelayMs = 7; | 
 |  | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnFrameBufferTimingsUpdated( | 
 |         kDecodeMs, kMaxDecodeMs, kCurrentDelayMs, kTargetDelayMs, | 
 |         kJitterBufferMs, kMinPlayoutDelayMs, kRenderDelayMs); | 
 |   } | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.DecodeTimeInMs")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.JitterBufferDelayInMs")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.TargetDelayInMs")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.CurrentDelayInMs")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.OnewayDelayInMs")); | 
 |  | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.DecodeTimeInMs", kDecodeMs)); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.JitterBufferDelayInMs", | 
 |                                   kJitterBufferMs)); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumEvents("WebRTC.Video.TargetDelayInMs", kTargetDelayMs)); | 
 |   EXPECT_EQ( | 
 |       1, metrics::NumEvents("WebRTC.Video.CurrentDelayInMs", kCurrentDelayMs)); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumEvents("WebRTC.Video.OnewayDelayInMs", kTargetDelayMs)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, DoesNotReportStaleFramerates) { | 
 |   const int kDefaultFps = 30; | 
 |   rtc::scoped_refptr<VideoFrameBuffer> video_frame_buffer( | 
 |       I420Buffer::Create(kWidth, kHeight)); | 
 |   VideoFrame frame(video_frame_buffer, kVideoRotation_0, 0); | 
 |  | 
 |   for (int i = 0; i < kDefaultFps; ++i) { | 
 |     // Since OnRenderedFrame is never called the fps in each sample will be 0, | 
 |     // i.e. bad | 
 |     frame.set_ntp_time_ms(fake_clock_.CurrentNtpInMilliseconds()); | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       VideoContentType::UNSPECIFIED); | 
 |     statistics_proxy_->OnRenderedFrame(frame); | 
 |     fake_clock_.AdvanceTimeMilliseconds(1000 / kDefaultFps); | 
 |   } | 
 |  | 
 |   EXPECT_EQ(kDefaultFps, statistics_proxy_->GetStats().decode_frame_rate); | 
 |   EXPECT_EQ(kDefaultFps, statistics_proxy_->GetStats().render_frame_rate); | 
 |  | 
 |   // FPS trackers in stats proxy have a 1000ms sliding window. | 
 |   fake_clock_.AdvanceTimeMilliseconds(1000); | 
 |   EXPECT_EQ(0, statistics_proxy_->GetStats().decode_frame_rate); | 
 |   EXPECT_EQ(0, statistics_proxy_->GetStats().render_frame_rate); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, GetStatsReportsReceivedFrameStats) { | 
 |   EXPECT_EQ(0, statistics_proxy_->GetStats().width); | 
 |   EXPECT_EQ(0, statistics_proxy_->GetStats().height); | 
 |   EXPECT_EQ(0u, statistics_proxy_->GetStats().frames_rendered); | 
 |  | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrame(kWidth, kHeight)); | 
 |  | 
 |   EXPECT_EQ(kWidth, statistics_proxy_->GetStats().width); | 
 |   EXPECT_EQ(kHeight, statistics_proxy_->GetStats().height); | 
 |   EXPECT_EQ(1u, statistics_proxy_->GetStats().frames_rendered); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        ReceivedFrameHistogramsAreNotUpdatedForTooFewSamples) { | 
 |   for (int i = 0; i < kMinRequiredSamples - 1; ++i) | 
 |     statistics_proxy_->OnRenderedFrame(CreateFrame(kWidth, kHeight)); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.ReceivedWidthInPixels")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.ReceivedHeightInPixels")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.RenderFramesPerSecond")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.RenderSqrtPixelsPerSecond")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, ReceivedFrameHistogramsAreUpdated) { | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) | 
 |     statistics_proxy_->OnRenderedFrame(CreateFrame(kWidth, kHeight)); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.ReceivedWidthInPixels")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.ReceivedHeightInPixels")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.RenderFramesPerSecond")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.RenderSqrtPixelsPerSecond")); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumEvents("WebRTC.Video.ReceivedWidthInPixels", kWidth)); | 
 |   EXPECT_EQ(1, | 
 |             metrics::NumEvents("WebRTC.Video.ReceivedHeightInPixels", kHeight)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, ZeroDelayReportedIfFrameNotDelayed) { | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |  | 
 |   // Frame not delayed, delayed frames to render: 0%. | 
 |   const int64_t kNowMs = fake_clock_.TimeInMilliseconds(); | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrameWithRenderTimeMs(kNowMs)); | 
 |  | 
 |   // Min run time has passed. | 
 |   fake_clock_.AdvanceTimeMilliseconds((metrics::kMinRunTimeInSeconds * 1000)); | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.DelayedFramesToRenderer")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.DelayedFramesToRenderer", 0)); | 
 |   EXPECT_EQ(0, metrics::NumSamples( | 
 |                    "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        DelayedFrameHistogramsAreNotUpdatedIfMinRuntimeHasNotPassed) { | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |  | 
 |   // Frame not delayed, delayed frames to render: 0%. | 
 |   const int64_t kNowMs = fake_clock_.TimeInMilliseconds(); | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrameWithRenderTimeMs(kNowMs)); | 
 |  | 
 |   // Min run time has not passed. | 
 |   fake_clock_.AdvanceTimeMilliseconds((metrics::kMinRunTimeInSeconds * 1000) - | 
 |                                       1); | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.DelayedFramesToRenderer")); | 
 |   EXPECT_EQ(0, metrics::NumSamples( | 
 |                    "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        DelayedFramesHistogramsAreNotUpdatedIfNoRenderedFrames) { | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |  | 
 |   // Min run time has passed. No rendered frames. | 
 |   fake_clock_.AdvanceTimeMilliseconds((metrics::kMinRunTimeInSeconds * 1000)); | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.DelayedFramesToRenderer")); | 
 |   EXPECT_EQ(0, metrics::NumSamples( | 
 |                    "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, DelayReportedIfFrameIsDelayed) { | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |  | 
 |   // Frame delayed 1 ms, delayed frames to render: 100%. | 
 |   const int64_t kNowMs = fake_clock_.TimeInMilliseconds(); | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrameWithRenderTimeMs(kNowMs - 1)); | 
 |  | 
 |   // Min run time has passed. | 
 |   fake_clock_.AdvanceTimeMilliseconds((metrics::kMinRunTimeInSeconds * 1000)); | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.DelayedFramesToRenderer")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.DelayedFramesToRenderer", 100)); | 
 |   EXPECT_EQ(1, metrics::NumSamples( | 
 |                    "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs")); | 
 |   EXPECT_EQ(1, metrics::NumEvents( | 
 |                    "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs", 1)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, AverageDelayOfDelayedFramesIsReported) { | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     VideoContentType::UNSPECIFIED); | 
 |  | 
 |   // Two frames delayed (6 ms, 10 ms), delayed frames to render: 50%. | 
 |   const int64_t kNowMs = fake_clock_.TimeInMilliseconds(); | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrameWithRenderTimeMs(kNowMs - 10)); | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrameWithRenderTimeMs(kNowMs - 6)); | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrameWithRenderTimeMs(kNowMs)); | 
 |   statistics_proxy_->OnRenderedFrame(CreateFrameWithRenderTimeMs(kNowMs + 1)); | 
 |  | 
 |   // Min run time has passed. | 
 |   fake_clock_.AdvanceTimeMilliseconds((metrics::kMinRunTimeInSeconds * 1000)); | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.DelayedFramesToRenderer")); | 
 |   EXPECT_EQ(1, metrics::NumEvents("WebRTC.Video.DelayedFramesToRenderer", 50)); | 
 |   EXPECT_EQ(1, metrics::NumSamples( | 
 |                    "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs")); | 
 |   EXPECT_EQ(1, metrics::NumEvents( | 
 |                    "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs", 8)); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, | 
 |        RtcpHistogramsNotUpdatedIfMinRuntimeHasNotPassed) { | 
 |   InsertFirstRtpPacket(kRemoteSsrc); | 
 |   fake_clock_.AdvanceTimeMilliseconds((metrics::kMinRunTimeInSeconds * 1000) - | 
 |                                       1); | 
 |  | 
 |   RtcpPacketTypeCounter counter; | 
 |   statistics_proxy_->RtcpPacketTypesCounterUpdated(kRemoteSsrc, counter); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.FirPacketsSentPerMinute")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.PliPacketsSentPerMinute")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.NackPacketsSentPerMinute")); | 
 | } | 
 |  | 
 | TEST_F(ReceiveStatisticsProxyTest, RtcpHistogramsAreUpdated) { | 
 |   InsertFirstRtpPacket(kRemoteSsrc); | 
 |   fake_clock_.AdvanceTimeMilliseconds(metrics::kMinRunTimeInSeconds * 1000); | 
 |  | 
 |   const uint32_t kFirPackets = 100; | 
 |   const uint32_t kPliPackets = 200; | 
 |   const uint32_t kNackPackets = 300; | 
 |  | 
 |   RtcpPacketTypeCounter counter; | 
 |   counter.fir_packets = kFirPackets; | 
 |   counter.pli_packets = kPliPackets; | 
 |   counter.nack_packets = kNackPackets; | 
 |   statistics_proxy_->RtcpPacketTypesCounterUpdated(kRemoteSsrc, counter); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.FirPacketsSentPerMinute")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.PliPacketsSentPerMinute")); | 
 |   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.NackPacketsSentPerMinute")); | 
 |   EXPECT_EQ( | 
 |       1, metrics::NumEvents("WebRTC.Video.FirPacketsSentPerMinute", | 
 |                             kFirPackets * 60 / metrics::kMinRunTimeInSeconds)); | 
 |   EXPECT_EQ( | 
 |       1, metrics::NumEvents("WebRTC.Video.PliPacketsSentPerMinute", | 
 |                             kPliPackets * 60 / metrics::kMinRunTimeInSeconds)); | 
 |   EXPECT_EQ( | 
 |       1, metrics::NumEvents("WebRTC.Video.NackPacketsSentPerMinute", | 
 |                             kNackPackets * 60 / metrics::kMinRunTimeInSeconds)); | 
 | } | 
 |  | 
 | INSTANTIATE_TEST_CASE_P(ContentTypes, | 
 |                         ReceiveStatisticsProxyTest, | 
 |                         ::testing::Values(VideoContentType::UNSPECIFIED, | 
 |                                           VideoContentType::SCREENSHARE)); | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, InterFrameDelaysAreReported) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 33; | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |   // One extra with double the interval. | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     content_type); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   const int kExpectedInterFrame = | 
 |       (kInterFrameDelayMs * (kMinRequiredSamples - 1) + | 
 |        kInterFrameDelayMs * 2) / | 
 |       kMinRequiredSamples; | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ( | 
 |         kExpectedInterFrame, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayInMs")); | 
 |     EXPECT_EQ( | 
 |         kInterFrameDelayMs * 2, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayMaxInMs")); | 
 |   } else { | 
 |     EXPECT_EQ(kExpectedInterFrame, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayInMs")); | 
 |     EXPECT_EQ(kInterFrameDelayMs * 2, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayMaxInMs")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, InterFrameDelaysPercentilesAreReported) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 33; | 
 |   const int kLastFivePercentsSamples = kMinRequiredSamples * 5 / 100; | 
 |   for (int i = 0; i <= kMinRequiredSamples - kLastFivePercentsSamples; ++i) { | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |   } | 
 |   // Last 5% of intervals are double in size. | 
 |   for (int i = 0; i < kLastFivePercentsSamples; ++i) { | 
 |     fake_clock_.AdvanceTimeMilliseconds(2 * kInterFrameDelayMs); | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |   } | 
 |   // Final sample is outlier and 10 times as big. | 
 |   fake_clock_.AdvanceTimeMilliseconds(10 * kInterFrameDelayMs); | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     content_type); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   const int kExpectedInterFrame = kInterFrameDelayMs * 2; | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ(kExpectedInterFrame, | 
 |               metrics::MinSample( | 
 |                   "WebRTC.Video.Screenshare.InterframeDelay95PercentileInMs")); | 
 |   } else { | 
 |     EXPECT_EQ( | 
 |         kExpectedInterFrame, | 
 |         metrics::MinSample("WebRTC.Video.InterframeDelay95PercentileInMs")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, MaxInterFrameDelayOnlyWithValidAverage) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 33; | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |  | 
 |   // |kMinRequiredSamples| samples, and thereby intervals, is required. That | 
 |   // means we're one frame short of having a valid data set. | 
 |   statistics_proxy_.reset(); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.InterframeDelayInMs")); | 
 |   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.InterframeDelayMaxInMs")); | 
 |   EXPECT_EQ( | 
 |       0, metrics::NumSamples("WebRTC.Video.Screenshare.InterframeDelayInMs")); | 
 |   EXPECT_EQ(0, metrics::NumSamples( | 
 |                    "WebRTC.Video.Screenshare.InterframeDelayMaxInMs")); | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, MaxInterFrameDelayOnlyWithPause) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 33; | 
 |   for (int i = 0; i <= kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |  | 
 |   // At this state, we should have a valid inter-frame delay. | 
 |   // Indicate stream paused and make a large jump in time. | 
 |   statistics_proxy_->OnStreamInactive(); | 
 |   fake_clock_.AdvanceTimeMilliseconds(5000); | 
 |  | 
 |   // Insert two more frames. The interval during the pause should be disregarded | 
 |   // in the stats. | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     content_type); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     content_type); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ( | 
 |         1, metrics::NumSamples("WebRTC.Video.Screenshare.InterframeDelayInMs")); | 
 |     EXPECT_EQ(1, metrics::NumSamples( | 
 |                      "WebRTC.Video.Screenshare.InterframeDelayMaxInMs")); | 
 |     EXPECT_EQ( | 
 |         kInterFrameDelayMs, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayInMs")); | 
 |     EXPECT_EQ( | 
 |         kInterFrameDelayMs, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayMaxInMs")); | 
 |   } else { | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayInMs")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayMaxInMs")); | 
 |     EXPECT_EQ(kInterFrameDelayMs, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayInMs")); | 
 |     EXPECT_EQ(kInterFrameDelayMs, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayMaxInMs")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, FreezesAreReported) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 33; | 
 |   const int kFreezeDelayMs = 200; | 
 |   const int kCallDurationMs = | 
 |       kMinRequiredSamples * kInterFrameDelayMs + kFreezeDelayMs; | 
 |   webrtc::VideoFrame frame(webrtc::I420Buffer::Create(1, 1), 0, 0, | 
 |                            webrtc::kVideoRotation_0); | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     statistics_proxy_->OnRenderedFrame(frame); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |   // Add extra freeze. | 
 |   fake_clock_.AdvanceTimeMilliseconds(kFreezeDelayMs); | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                     content_type); | 
 |   statistics_proxy_->OnRenderedFrame(frame); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   const int kExpectedTimeBetweenFreezes = | 
 |       kInterFrameDelayMs * (kMinRequiredSamples - 1); | 
 |   const int kExpectedNumberFreezesPerMinute = 60 * 1000 / kCallDurationMs; | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ( | 
 |         kFreezeDelayMs + kInterFrameDelayMs, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.MeanFreezeDurationMs")); | 
 |     EXPECT_EQ(kExpectedTimeBetweenFreezes, | 
 |               metrics::MinSample( | 
 |                   "WebRTC.Video.Screenshare.MeanTimeBetweenFreezesMs")); | 
 |     EXPECT_EQ( | 
 |         kExpectedNumberFreezesPerMinute, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.NumberFreezesPerMinute")); | 
 |   } else { | 
 |     EXPECT_EQ(kFreezeDelayMs + kInterFrameDelayMs, | 
 |               metrics::MinSample("WebRTC.Video.MeanFreezeDurationMs")); | 
 |     EXPECT_EQ(kExpectedTimeBetweenFreezes, | 
 |               metrics::MinSample("WebRTC.Video.MeanTimeBetweenFreezesMs")); | 
 |     EXPECT_EQ(kExpectedNumberFreezesPerMinute, | 
 |               metrics::MinSample("WebRTC.Video.NumberFreezesPerMinute")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, PausesAreIgnored) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 33; | 
 |   const int kPauseDurationMs = 10000; | 
 |   webrtc::VideoFrame frame(webrtc::I420Buffer::Create(1, 1), 0, 0, | 
 |                            webrtc::kVideoRotation_0); | 
 |   for (int i = 0; i <= kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     statistics_proxy_->OnRenderedFrame(frame); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |   // Add a pause. | 
 |   fake_clock_.AdvanceTimeMilliseconds(kPauseDurationMs); | 
 |   statistics_proxy_->OnStreamInactive(); | 
 |  | 
 |   // Second playback interval with triple the length. | 
 |   for (int i = 0; i <= kMinRequiredSamples * 3; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     statistics_proxy_->OnRenderedFrame(frame); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   // Average of two playback intervals. | 
 |   const int kExpectedTimeBetweenFreezes = | 
 |       kInterFrameDelayMs * kMinRequiredSamples * 2; | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ(-1, metrics::MinSample( | 
 |                       "WebRTC.Video.Screenshare.MeanFreezeDurationMs")); | 
 |     EXPECT_EQ(kExpectedTimeBetweenFreezes, | 
 |               metrics::MinSample( | 
 |                   "WebRTC.Video.Screenshare.MeanTimeBetweenFreezesMs")); | 
 |   } else { | 
 |     EXPECT_EQ(-1, metrics::MinSample("WebRTC.Video.MeanFreezeDurationMs")); | 
 |     EXPECT_EQ(kExpectedTimeBetweenFreezes, | 
 |               metrics::MinSample("WebRTC.Video.MeanTimeBetweenFreezesMs")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, ManyPausesAtTheBeginning) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 33; | 
 |   const int kPauseDurationMs = 10000; | 
 |   for (int i = 0; i <= kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |  | 
 |     statistics_proxy_->OnStreamInactive(); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kPauseDurationMs); | 
 |  | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   // No freezes should be detected, as all long inter-frame delays were pauses. | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ(-1, metrics::MinSample( | 
 |                       "WebRTC.Video.Screenshare.MeanFreezeDurationMs")); | 
 |   } else { | 
 |     EXPECT_EQ(-1, metrics::MinSample("WebRTC.Video.MeanFreezeDurationMs")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, TimeInHdReported) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 20; | 
 |   // HD frames. | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |   // SD frames. | 
 |   for (int i = 0; i < 2 * kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth / 2, kHeight / 2, | 
 |                                       content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |   // Extra last frame. | 
 |   statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth / 2, kHeight / 2, | 
 |                                     content_type); | 
 |   statistics_proxy_.reset(); | 
 |   const int kExpectedTimeInHdPercents = 33; | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ( | 
 |         kExpectedTimeInHdPercents, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.TimeInHdPercentage")); | 
 |   } else { | 
 |     EXPECT_EQ(kExpectedTimeInHdPercents, | 
 |               metrics::MinSample("WebRTC.Video.TimeInHdPercentage")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, TimeInBlockyVideoReported) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 20; | 
 |   const int kHighQp = 80; | 
 |   const int kLowQp = 30; | 
 |   // High quality frames. | 
 |   for (int i = 0; i < kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(kLowQp, kWidth, kHeight, content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |   // Blocky frames. | 
 |   for (int i = 0; i < 2 * kMinRequiredSamples; ++i) { | 
 |     statistics_proxy_->OnDecodedFrame(kHighQp, kWidth, kHeight, content_type); | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |   } | 
 |   // Extra last frame. | 
 |   statistics_proxy_->OnDecodedFrame(kHighQp, kWidth, kHeight, content_type); | 
 |   statistics_proxy_.reset(); | 
 |   const int kExpectedTimeInHdPercents = 66; | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ(kExpectedTimeInHdPercents, | 
 |               metrics::MinSample( | 
 |                   "WebRTC.Video.Screenshare.TimeInBlockyVideoPercentage")); | 
 |   } else { | 
 |     EXPECT_EQ(kExpectedTimeInHdPercents, | 
 |               metrics::MinSample("WebRTC.Video.TimeInBlockyVideoPercentage")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, DownscalesReported) { | 
 |   const VideoContentType content_type = GetParam(); | 
 |   const int kInterFrameDelayMs = 1000;  // To ensure long enough call duration. | 
 |   const int kLowQp = 30; | 
 |  | 
 |   statistics_proxy_->OnDecodedFrame(kLowQp, kWidth / 2, kHeight / 2, | 
 |                                     content_type); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |  | 
 |   // Downscale. | 
 |   statistics_proxy_->OnDecodedFrame(kLowQp, kWidth, kHeight, content_type); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |  | 
 |   statistics_proxy_->OnDecodedFrame(kLowQp, kWidth / 2, kHeight / 2, | 
 |                                     content_type); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |  | 
 |   statistics_proxy_->OnDecodedFrame(kLowQp, kWidth / 2, kHeight / 2, | 
 |                                     content_type); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |  | 
 |   // Downscale. | 
 |   statistics_proxy_->OnDecodedFrame(kLowQp, kWidth / 4, kHeight / 4, | 
 |                                     content_type); | 
 |   fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs); | 
 |  | 
 |   statistics_proxy_.reset(); | 
 |   const int kExpectedDownscales = 30;  // 2 per 5 seconds = 30 per minute. | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ( | 
 |         kExpectedDownscales, | 
 |         metrics::MinSample( | 
 |             "WebRTC.Video.Screenshare.NumberResolutionDownswitchesPerMinute")); | 
 |   } else { | 
 |     EXPECT_EQ(kExpectedDownscales, | 
 |               metrics::MinSample( | 
 |                   "WebRTC.Video.NumberResolutionDownswitchesPerMinute")); | 
 |   } | 
 | } | 
 |  | 
 | TEST_P(ReceiveStatisticsProxyTest, StatsAreSlicedOnSimulcastAndExperiment) { | 
 |   VideoContentType content_type = GetParam(); | 
 |   const uint8_t experiment_id = 1; | 
 |   videocontenttypehelpers::SetExperimentId(&content_type, experiment_id); | 
 |   const int kInterFrameDelayMs1 = 30; | 
 |   const int kInterFrameDelayMs2 = 50; | 
 |  | 
 |   videocontenttypehelpers::SetSimulcastId(&content_type, 1); | 
 |   for (int i = 0; i <= kMinRequiredSamples; ++i) { | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs1); | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |   } | 
 |  | 
 |   videocontenttypehelpers::SetSimulcastId(&content_type, 2); | 
 |   for (int i = 0; i <= kMinRequiredSamples; ++i) { | 
 |     fake_clock_.AdvanceTimeMilliseconds(kInterFrameDelayMs2); | 
 |     statistics_proxy_->OnDecodedFrame(absl::nullopt, kWidth, kHeight, | 
 |                                       content_type); | 
 |   } | 
 |   statistics_proxy_.reset(); | 
 |  | 
 |   if (videocontenttypehelpers::IsScreenshare(content_type)) { | 
 |     EXPECT_EQ( | 
 |         1, metrics::NumSamples("WebRTC.Video.Screenshare.InterframeDelayInMs")); | 
 |     EXPECT_EQ(1, metrics::NumSamples( | 
 |                      "WebRTC.Video.Screenshare.InterframeDelayMaxInMs")); | 
 |     EXPECT_EQ(1, metrics::NumSamples( | 
 |                      "WebRTC.Video.Screenshare.InterframeDelayInMs.S0")); | 
 |     EXPECT_EQ(1, metrics::NumSamples( | 
 |                      "WebRTC.Video.Screenshare.InterframeDelayMaxInMs.S0")); | 
 |     EXPECT_EQ(1, metrics::NumSamples( | 
 |                      "WebRTC.Video.Screenshare.InterframeDelayInMs.S1")); | 
 |     EXPECT_EQ(1, metrics::NumSamples( | 
 |                      "WebRTC.Video.Screenshare.InterframeDelayMaxInMs.S1")); | 
 |     EXPECT_EQ(1, | 
 |               metrics::NumSamples("WebRTC.Video.Screenshare.InterframeDelayInMs" | 
 |                                   ".ExperimentGroup0")); | 
 |     EXPECT_EQ( | 
 |         1, metrics::NumSamples("WebRTC.Video.Screenshare.InterframeDelayMaxInMs" | 
 |                                ".ExperimentGroup0")); | 
 |     EXPECT_EQ( | 
 |         kInterFrameDelayMs1, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayInMs.S0")); | 
 |     EXPECT_EQ( | 
 |         kInterFrameDelayMs2, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayInMs.S1")); | 
 |     EXPECT_EQ( | 
 |         (kInterFrameDelayMs1 + kInterFrameDelayMs2) / 2, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayInMs")); | 
 |     EXPECT_EQ( | 
 |         kInterFrameDelayMs2, | 
 |         metrics::MinSample("WebRTC.Video.Screenshare.InterframeDelayMaxInMs")); | 
 |     EXPECT_EQ( | 
 |         (kInterFrameDelayMs1 + kInterFrameDelayMs2) / 2, | 
 |         metrics::MinSample( | 
 |             "WebRTC.Video.Screenshare.InterframeDelayInMs.ExperimentGroup0")); | 
 |   } else { | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayInMs")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayMaxInMs")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayInMs.S0")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayMaxInMs.S0")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayInMs.S1")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayMaxInMs.S1")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayInMs" | 
 |                                      ".ExperimentGroup0")); | 
 |     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.InterframeDelayMaxInMs" | 
 |                                      ".ExperimentGroup0")); | 
 |     EXPECT_EQ(kInterFrameDelayMs1, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayInMs.S0")); | 
 |     EXPECT_EQ(kInterFrameDelayMs2, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayInMs.S1")); | 
 |     EXPECT_EQ((kInterFrameDelayMs1 + kInterFrameDelayMs2) / 2, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayInMs")); | 
 |     EXPECT_EQ(kInterFrameDelayMs2, | 
 |               metrics::MinSample("WebRTC.Video.InterframeDelayMaxInMs")); | 
 |     EXPECT_EQ((kInterFrameDelayMs1 + kInterFrameDelayMs2) / 2, | 
 |               metrics::MinSample( | 
 |                   "WebRTC.Video.InterframeDelayInMs.ExperimentGroup0")); | 
 |   } | 
 | } | 
 | }  // namespace webrtc |