Add QP sum stats for received streams.

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 36 matching lines @@
   }
 
   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();
+    statistics_proxy_->OnDecodedFrame(-1);
     EXPECT_EQ(i, statistics_proxy_->GetStats().frames_decoded);
   }
 }
 
+TEST_F(ReceiveStatisticsProxyTest, OnDecodedFrameIncreasesQpSum) {
+  EXPECT_EQ(rtc::Optional<uint64_t>(), statistics_proxy_->GetStats().qp_sum);
+  statistics_proxy_->OnDecodedFrame(3);
+  EXPECT_EQ(rtc::Optional<uint64_t>(3u), statistics_proxy_->GetStats().qp_sum);
+  statistics_proxy_->OnDecodedFrame(127);
+  EXPECT_EQ(rtc::Optional<uint64_t>(130u),
+            statistics_proxy_->GetStats().qp_sum);
+}
+
+TEST_F(ReceiveStatisticsProxyTest, OnDecodedFrameWithoutQpQpSumWontExist) {
+  EXPECT_EQ(rtc::Optional<uint64_t>(), statistics_proxy_->GetStats().qp_sum);
+  statistics_proxy_->OnDecodedFrame(-1);
+  EXPECT_EQ(rtc::Optional<uint64_t>(), 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);
   }
 }
 
@@ skipping 281 matching lines @@
   codec_info.codecType = kVideoCodecVP8;
 
   for (int i = 0; i < kMinRequiredSamples; ++i)
     statistics_proxy_->OnPreDecode(encoded_image, &codec_info);
 
   statistics_proxy_.reset();
   EXPECT_EQ(0, metrics::NumSamples("WebRTC.Video.Decoded.Vp8.Qp"));
 }
 
 }  // namespace webrtc