Report timing frames info in GetStats.

webrtc/video/receive_statistics_proxy_unittest.cc

 /*
  *  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.
  */
 
@@ skipping 229 matching lines @@
   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,
+       GetTimingFrameInfoReportsLongestTimingFrame) {
+  const int64_t kShortEndToEndDelay = 10;
+  const int64_t kMedEndToEndDelay = 20;
+  const int64_t kLongEndToEndDelay = 100;
+  const uint32_t kExpectedRtpTimestamp = 2;
+  TimingFrameInfo info;
+  rtc::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_->GetAndResetTimingFrameInfo();
+  EXPECT_TRUE(result);
+  EXPECT_EQ(kExpectedRtpTimestamp, result->rtp_timestamp);
+}
+
+TEST_F(ReceiveStatisticsProxyTest, GetTimingFrameInfoTimingFramesReportedOnce) {
+  const int64_t kShortEndToEndDelay = 10;
+  const uint32_t kExpectedRtpTimestamp = 2;
+  TimingFrameInfo info;
+  rtc::Optional<TimingFrameInfo> result;
+  info.rtp_timestamp = kExpectedRtpTimestamp;
+  info.capture_time_ms = 0;
+  info.decode_finish_ms = kShortEndToEndDelay;
+  statistics_proxy_->OnTimingFrameInfoUpdated(info);
+  result = statistics_proxy_->GetAndResetTimingFrameInfo();
+  EXPECT_TRUE(result);
+  EXPECT_EQ(kExpectedRtpTimestamp, result->rtp_timestamp);
+  result = statistics_proxy_->GetAndResetTimingFrameInfo();
+  EXPECT_FALSE(result);
+}
+
 TEST_F(ReceiveStatisticsProxyTest, LifetimeHistogramIsUpdated) {
   const int64_t kTimeSec = 3;
   fake_clock_.AdvanceTimeMilliseconds(kTimeSec * 1000);
   // 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));
 }
@@ skipping 388 matching lines @@
                             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));
 }
 
 }  // namespace webrtc