Tune QP-based quality thresholds.

webrtc/modules/video_coding/utility/quality_scaler_unittest.cc

 /*
  *  Copyright (c) 2014 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 11 matching lines @@
 static const int kHeightVga = 480;
 static const int kFramerate = 30;
 static const int kLowQp = 15;
 static const int kNormalQp = 30;
 static const int kLowQpThreshold = 18;
 static const int kHighQp = 40;
 static const int kDisabledBadQpThreshold = 64;
 static const int kLowInitialBitrateKbps = 300;
 // These values need to be in sync with corresponding constants
 // in quality_scaler.cc
-static const int kMeasureSecondsDownscale = 3;
 static const int kMeasureSecondsFastUpscale = 2;
 static const int kMeasureSecondsUpscale = 5;
+static const int kMeasureSecondsDownscale = 5;
 static const int kMinDownscaleDimension = 140;
 }  // namespace
 
 class QualityScalerTest : public ::testing::Test {
  public:
   // Temporal and spatial resolution.
   struct Resolution {
     int framerate;
     int width;
     int height;
@@ skipping 443 matching lines @@
 
 TEST_F(QualityScalerTest, DownscalesFrom1280x720To320x180) {
   DownscaleEndsAt(1280, 720, 320, 180);
 }
 
 TEST_F(QualityScalerTest, DoesntDownscaleInitialQvga) {
   DownscaleEndsAt(320, 180, 320, 180);
 }
 
 }  // namespace webrtc