Add QVGA to thresholds for initial quality.

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.
  */
 
 #include "webrtc/modules/video_coding/utility/quality_scaler.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace webrtc {
 namespace {
 static const int kNumSeconds = 10;
 static const int kWidth = 1920;
-static const int kWidthVga = 640;
 static const int kHalfWidth = kWidth / 2;
 static const int kHeight = 1080;
-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 kMeasureSecondsFastUpscale = 2;
@@ skipping 340 matching lines @@
   DoesNotDownscaleFrameDimensions(
       2 * kMinDownscaleDimension - 1, 1000);
 }
 
 TEST_F(QualityScalerTest, DoesNotDownscaleBelow2xDefaultMinDimensionsHeight) {
   DoesNotDownscaleFrameDimensions(
       1000, 2 * kMinDownscaleDimension - 1);
 }
 
 TEST_F(QualityScalerTest, DownscaleToVgaOnLowInitialBitrate) {
-  qs_.Init(kLowQpThreshold, kDisabledBadQpThreshold, true,
-           kLowInitialBitrateKbps, kWidth, kHeight, kFramerate);
+  static const int kWidth720p = 1280;
+  static const int kHeight720p = 720;
+  static const int kInitialBitrateKbps = 300;
+  input_frame_.CreateEmptyFrame(kWidth720p, kHeight720p, kWidth720p,
+                                kWidth720p / 2, kWidth720p / 2);
+  qs_.Init(kLowQpThreshold, kDisabledBadQpThreshold, true, kInitialBitrateKbps,
+           kWidth720p, kHeight720p, kFramerate);
   qs_.OnEncodeFrame(input_frame_);
   int init_width = qs_.GetScaledResolution().width;
   int init_height = qs_.GetScaledResolution().height;
-  EXPECT_LE(init_width, kWidthVga);
-  EXPECT_LE(init_height, kHeightVga);
+  EXPECT_EQ(640, init_width);
+  EXPECT_EQ(360, init_height);
+}
+
+TEST_F(QualityScalerTest, DownscaleToQvgaOnLowerInitialBitrate) {
+  static const int kWidth720p = 1280;
+  static const int kHeight720p = 720;
+  static const int kInitialBitrateKbps = 200;
+  input_frame_.CreateEmptyFrame(kWidth720p, kHeight720p, kWidth720p,
+                                kWidth720p / 2, kWidth720p / 2);
+  qs_.Init(kLowQpThreshold, kDisabledBadQpThreshold, true, kInitialBitrateKbps,
+           kWidth720p, kHeight720p, kFramerate);
+  qs_.OnEncodeFrame(input_frame_);
+  int init_width = qs_.GetScaledResolution().width;
+  int init_height = qs_.GetScaledResolution().height;
+  EXPECT_EQ(320, init_width);
+  EXPECT_EQ(180, init_height);
 }
 
 TEST_F(QualityScalerTest, DownscaleAfterMeasuredSecondsThenSlowerBackUp) {
   QualityScalerTest::Resolution initial_res;
   qs_.Init(kLowQpThreshold, kHighQp, false, 0, kWidth, kHeight, kFramerate);
   qs_.OnEncodeFrame(input_frame_);
   initial_res.width = qs_.GetScaledResolution().width;
   initial_res.height = qs_.GetScaledResolution().height;
 
   // Should not downscale if less than kMeasureSecondsDownscale seconds passed.
@@ skipping 88 matching lines @@
 
 TEST_F(QualityScalerTest, DownscalesFrom1280x720To320x180) {
   DownscaleEndsAt(1280, 720, 320, 180);
 }
 
 TEST_F(QualityScalerTest, DoesntDownscaleInitialQvga) {
   DownscaleEndsAt(320, 180, 320, 180);
 }
 
 }  // namespace webrtc