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92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
133 lines
4.1 KiB
C++
133 lines
4.1 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "video/quality_threshold.h"
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#include "test/gtest.h"
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namespace webrtc {
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TEST(QualityThresholdTest, BackAndForth) {
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const int kLowThreshold = 0;
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const int kHighThreshold = 1;
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const float kFraction = 0.75f;
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const int kMaxMeasurements = 10;
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QualityThreshold thresh(kLowThreshold, kHighThreshold, kFraction,
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kMaxMeasurements);
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const int kNeededMeasurements =
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static_cast<int>(kFraction * kMaxMeasurements + 1);
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for (int i = 0; i < kNeededMeasurements; ++i) {
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EXPECT_FALSE(thresh.IsHigh());
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thresh.AddMeasurement(kLowThreshold);
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}
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ASSERT_TRUE(thresh.IsHigh());
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for (int i = 0; i < kNeededMeasurements; ++i) {
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EXPECT_FALSE(*thresh.IsHigh());
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thresh.AddMeasurement(kHighThreshold);
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}
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EXPECT_TRUE(*thresh.IsHigh());
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for (int i = 0; i < kNeededMeasurements; ++i) {
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EXPECT_TRUE(*thresh.IsHigh());
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thresh.AddMeasurement(kLowThreshold);
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}
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EXPECT_FALSE(*thresh.IsHigh());
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}
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TEST(QualityThresholdTest, Variance) {
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const int kLowThreshold = 0;
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const int kHighThreshold = 1;
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const float kFraction = 0.8f;
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const int kMaxMeasurements = 10;
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const double kMaxError = 0.01;
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// Previously randomly generated values...
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int values[] = {51, 79, 80, 56, 19, 20, 48, 57, 48, 25, 2, 25, 38, 37, 25};
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// ...with precomputed variances.
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double variances[] = {476.9, 687.6, 552, 336.4, 278.767, 265.167};
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QualityThreshold thresh(kLowThreshold, kHighThreshold, kFraction,
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kMaxMeasurements);
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for (int i = 0; i < kMaxMeasurements; ++i) {
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EXPECT_FALSE(thresh.CalculateVariance());
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thresh.AddMeasurement(values[i]);
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}
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ASSERT_TRUE(thresh.CalculateVariance());
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EXPECT_NEAR(variances[0], *thresh.CalculateVariance(), kMaxError);
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for (unsigned int i = 1; i < sizeof(variances) / sizeof(double); ++i) {
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thresh.AddMeasurement(values[i + kMaxMeasurements - 1]);
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EXPECT_NEAR(variances[i], *thresh.CalculateVariance(), kMaxError);
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}
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for (int i = 0; i < kMaxMeasurements; ++i) {
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thresh.AddMeasurement(42);
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}
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EXPECT_NEAR(0, *thresh.CalculateVariance(), kMaxError);
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}
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TEST(QualityThresholdTest, BetweenThresholds) {
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const int kLowThreshold = 0;
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const int kHighThreshold = 2;
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const float kFraction = 0.6f;
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const int kMaxMeasurements = 10;
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const int kBetweenThresholds = (kLowThreshold + kHighThreshold) / 2;
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QualityThreshold thresh(kLowThreshold, kHighThreshold, kFraction,
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kMaxMeasurements);
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for (int i = 0; i < 2 * kMaxMeasurements; ++i) {
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EXPECT_FALSE(thresh.IsHigh());
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thresh.AddMeasurement(kBetweenThresholds);
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}
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EXPECT_FALSE(thresh.IsHigh());
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}
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TEST(QualityThresholdTest, FractionHigh) {
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const int kLowThreshold = 0;
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const int kHighThreshold = 2;
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const float kFraction = 0.75f;
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const int kMaxMeasurements = 10;
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const int kBetweenThresholds = (kLowThreshold + kHighThreshold) / 2;
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const int kNeededMeasurements =
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static_cast<int>(kFraction * kMaxMeasurements + 1);
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QualityThreshold thresh(kLowThreshold, kHighThreshold, kFraction,
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kMaxMeasurements);
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for (int i = 0; i < kMaxMeasurements; ++i) {
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EXPECT_FALSE(thresh.FractionHigh(1));
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thresh.AddMeasurement(kBetweenThresholds);
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}
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for (int i = 0; i < kNeededMeasurements; i++) {
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EXPECT_FALSE(thresh.FractionHigh(1));
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thresh.AddMeasurement(kHighThreshold);
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}
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EXPECT_FALSE(thresh.FractionHigh(2));
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ASSERT_TRUE(thresh.FractionHigh(1));
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EXPECT_NEAR(*thresh.FractionHigh(1), 1, 0.001);
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for (int i = 0; i < kNeededMeasurements; i++) {
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EXPECT_NEAR(*thresh.FractionHigh(1), 1, 0.001);
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thresh.AddMeasurement(kLowThreshold);
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}
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EXPECT_NEAR(
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*thresh.FractionHigh(1),
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static_cast<double>(kNeededMeasurements) / (kNeededMeasurements + 1),
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0.001);
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}
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} // namespace webrtc
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