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- // 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
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