// Copyright 2017 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "remoting/host/audio_volume_filter.h" #include "testing/gtest/include/gtest/gtest.h" namespace remoting { namespace { class FakeAudioVolumeFilter : public AudioVolumeFilter { public: FakeAudioVolumeFilter(int silence_threshold) : AudioVolumeFilter(silence_threshold) {} ~FakeAudioVolumeFilter() override = default; void set_audio_level(float level) { level_ = level; } protected: float GetAudioLevel() override { return level_; } private: float level_ = 0; }; } // namespace TEST(AudioVolumeFilterTest, TwoChannels) { int16_t samples[] = {1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10}; FakeAudioVolumeFilter filter(0); filter.set_audio_level(0.5f); filter.Initialize(9, 2); // After applying the audio volume, the |samples| should still pass the // AudioSilenceDetector, AudioVolumeFilter::Apply() returns true under this // condition. Ditto. ASSERT_TRUE(filter.Apply(samples, std::size(samples) / 2)); } TEST(AudioVolumeFilterTest, ThreeChannels) { int16_t samples[] = {1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11}; FakeAudioVolumeFilter filter(0); filter.set_audio_level(0.5f); filter.Initialize(6, 3); ASSERT_TRUE(filter.Apply(samples, std::size(samples) / 3)); } TEST(AudioVolumeFilterTest, SilentSamples) { int16_t samples[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; FakeAudioVolumeFilter filter(0); filter.set_audio_level(0.5f); filter.Initialize(9, 2); ASSERT_FALSE(filter.Apply(samples, std::size(samples) / 2)); } TEST(AudioVolumeFilterTest, AudioLevel0) { int16_t samples[] = {1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10}; FakeAudioVolumeFilter filter(0); filter.set_audio_level(0); filter.Initialize(9, 2); ASSERT_FALSE(filter.Apply(samples, std::size(samples) / 2)); } TEST(AudioVolumeFilterTest, SilentAfterApplying) { int16_t samples[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}; FakeAudioVolumeFilter filter(0); filter.set_audio_level(0.9f); filter.Initialize(9, 2); ASSERT_TRUE(filter.Apply(samples, std::size(samples) / 2)); } } // namespace remoting