| /* |
| * Copyright (c) 2013 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 "modules/audio_processing/agc/agc_manager_direct.h" |
| |
| #include "modules/audio_processing/agc/gain_control.h" |
| #include "modules/audio_processing/agc/mock_agc.h" |
| #include "modules/audio_processing/include/mock_audio_processing.h" |
| #include "test/field_trial.h" |
| #include "test/gmock.h" |
| #include "test/gtest.h" |
| |
| using ::testing::_; |
| using ::testing::AtLeast; |
| using ::testing::DoAll; |
| using ::testing::Return; |
| using ::testing::SetArgPointee; |
| |
| namespace webrtc { |
| namespace { |
| |
| constexpr int kSampleRateHz = 32000; |
| constexpr int kNumChannels = 1; |
| constexpr int kSamplesPerChannel = kSampleRateHz / 100; |
| constexpr int kInitialVolume = 128; |
| constexpr int kClippedMin = 165; // Arbitrary, but different from the default. |
| constexpr float kAboveClippedThreshold = 0.2f; |
| constexpr int kMinMicLevel = 12; |
| constexpr int kClippedLevelStep = 15; |
| constexpr float kClippedRatioThreshold = 0.1f; |
| constexpr int kClippedWaitFrames = 300; |
| |
| using ClippingPredictorConfig = AudioProcessing::Config::GainController1:: |
| AnalogGainController::ClippingPredictor; |
| |
| class MockGainControl : public GainControl { |
| public: |
| virtual ~MockGainControl() {} |
| MOCK_METHOD(int, set_stream_analog_level, (int level), (override)); |
| MOCK_METHOD(int, stream_analog_level, (), (const, override)); |
| MOCK_METHOD(int, set_mode, (Mode mode), (override)); |
| MOCK_METHOD(Mode, mode, (), (const, override)); |
| MOCK_METHOD(int, set_target_level_dbfs, (int level), (override)); |
| MOCK_METHOD(int, target_level_dbfs, (), (const, override)); |
| MOCK_METHOD(int, set_compression_gain_db, (int gain), (override)); |
| MOCK_METHOD(int, compression_gain_db, (), (const, override)); |
| MOCK_METHOD(int, enable_limiter, (bool enable), (override)); |
| MOCK_METHOD(bool, is_limiter_enabled, (), (const, override)); |
| MOCK_METHOD(int, |
| set_analog_level_limits, |
| (int minimum, int maximum), |
| (override)); |
| MOCK_METHOD(int, analog_level_minimum, (), (const, override)); |
| MOCK_METHOD(int, analog_level_maximum, (), (const, override)); |
| MOCK_METHOD(bool, stream_is_saturated, (), (const, override)); |
| }; |
| |
| std::unique_ptr<AgcManagerDirect> CreateAgcManagerDirect( |
| int startup_min_level, |
| int clipped_level_step, |
| float clipped_ratio_threshold, |
| int clipped_wait_frames) { |
| return std::make_unique<AgcManagerDirect>( |
| /*num_capture_channels=*/1, startup_min_level, kClippedMin, |
| /*disable_digital_adaptive=*/true, kSampleRateHz, clipped_level_step, |
| clipped_ratio_threshold, clipped_wait_frames, ClippingPredictorConfig()); |
| } |
| |
| std::unique_ptr<AgcManagerDirect> CreateAgcManagerDirect( |
| int startup_min_level, |
| int clipped_level_step, |
| float clipped_ratio_threshold, |
| int clipped_wait_frames, |
| const ClippingPredictorConfig& clipping_cfg) { |
| return std::make_unique<AgcManagerDirect>( |
| /*num_capture_channels=*/1, startup_min_level, kClippedMin, |
| /*disable_digital_adaptive=*/true, kSampleRateHz, clipped_level_step, |
| clipped_ratio_threshold, clipped_wait_frames, clipping_cfg); |
| } |
| |
| void CallPreProcessAudioBuffer(int num_calls, |
| float peak_ratio, |
| AgcManagerDirect& manager) { |
| RTC_DCHECK_GE(1.f, peak_ratio); |
| AudioBuffer audio_buffer(kSampleRateHz, 1, kSampleRateHz, 1, kSampleRateHz, |
| 1); |
| const int num_channels = audio_buffer.num_channels(); |
| const int num_frames = audio_buffer.num_frames(); |
| for (int ch = 0; ch < num_channels; ++ch) { |
| for (int i = 0; i < num_frames; i += 2) { |
| audio_buffer.channels()[ch][i] = peak_ratio * 32767.f; |
| audio_buffer.channels()[ch][i + 1] = 0.0f; |
| } |
| } |
| for (int n = 0; n < num_calls / 2; ++n) { |
| manager.AnalyzePreProcess(&audio_buffer); |
| } |
| for (int ch = 0; ch < num_channels; ++ch) { |
| for (int i = 0; i < num_frames; ++i) { |
| audio_buffer.channels()[ch][i] = peak_ratio * 32767.f; |
| } |
| } |
| for (int n = 0; n < num_calls - num_calls / 2; ++n) { |
| manager.AnalyzePreProcess(&audio_buffer); |
| } |
| } |
| |
| } // namespace |
| |
| class AgcManagerDirectTest : public ::testing::Test { |
| protected: |
| AgcManagerDirectTest() |
| : agc_(new MockAgc), |
| manager_(agc_, |
| kInitialVolume, |
| kClippedMin, |
| kSampleRateHz, |
| kClippedLevelStep, |
| kClippedRatioThreshold, |
| kClippedWaitFrames, |
| ClippingPredictorConfig()), |
| audio(kNumChannels), |
| audio_data(kNumChannels * kSamplesPerChannel, 0.f) { |
| ExpectInitialize(); |
| manager_.Initialize(); |
| manager_.SetupDigitalGainControl(&gctrl_); |
| for (size_t ch = 0; ch < kNumChannels; ++ch) { |
| audio[ch] = &audio_data[ch * kSamplesPerChannel]; |
| } |
| } |
| |
| void FirstProcess() { |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)).WillOnce(Return(false)); |
| CallProcess(1); |
| } |
| |
| void SetVolumeAndProcess(int volume) { |
| manager_.set_stream_analog_level(volume); |
| FirstProcess(); |
| } |
| |
| void ExpectCheckVolumeAndReset(int volume) { |
| manager_.set_stream_analog_level(volume); |
| EXPECT_CALL(*agc_, Reset()); |
| } |
| |
| void ExpectInitialize() { |
| EXPECT_CALL(gctrl_, set_mode(GainControl::kFixedDigital)); |
| EXPECT_CALL(gctrl_, set_target_level_dbfs(2)); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(7)); |
| EXPECT_CALL(gctrl_, enable_limiter(true)); |
| } |
| |
| void CallProcess(int num_calls) { |
| for (int i = 0; i < num_calls; ++i) { |
| EXPECT_CALL(*agc_, Process(_, _, _)).WillOnce(Return()); |
| manager_.Process(nullptr); |
| absl::optional<int> new_digital_gain = |
| manager_.GetDigitalComressionGain(); |
| if (new_digital_gain) { |
| gctrl_.set_compression_gain_db(*new_digital_gain); |
| } |
| } |
| } |
| |
| void CallPreProc(int num_calls, float clipped_ratio) { |
| RTC_DCHECK_GE(1.f, clipped_ratio); |
| const int num_clipped = kSamplesPerChannel * clipped_ratio; |
| std::fill(audio_data.begin(), audio_data.end(), 0.f); |
| for (size_t ch = 0; ch < kNumChannels; ++ch) { |
| for (int k = 0; k < num_clipped; ++k) { |
| audio[ch][k] = 32767.f; |
| } |
| } |
| for (int i = 0; i < num_calls; ++i) { |
| manager_.AnalyzePreProcess(audio.data(), kSamplesPerChannel); |
| } |
| } |
| |
| void CallPreProcForChangingAudio(int num_calls, float peak_ratio) { |
| RTC_DCHECK_GE(1.f, peak_ratio); |
| std::fill(audio_data.begin(), audio_data.end(), 0.f); |
| for (size_t ch = 0; ch < kNumChannels; ++ch) { |
| for (size_t k = 0; k < kSamplesPerChannel; k += 2) { |
| audio[ch][k] = peak_ratio * 32767.f; |
| } |
| } |
| for (int i = 0; i < num_calls / 2; ++i) { |
| manager_.AnalyzePreProcess(audio.data(), kSamplesPerChannel); |
| } |
| for (size_t ch = 0; ch < kNumChannels; ++ch) { |
| for (size_t k = 0; k < kSamplesPerChannel; ++k) { |
| audio[ch][k] = peak_ratio * 32767.f; |
| } |
| } |
| for (int i = 0; i < num_calls - num_calls / 2; ++i) { |
| manager_.AnalyzePreProcess(audio.data(), kSamplesPerChannel); |
| } |
| } |
| |
| MockAgc* agc_; |
| MockGainControl gctrl_; |
| AgcManagerDirect manager_; |
| std::vector<float*> audio; |
| std::vector<float> audio_data; |
| }; |
| |
| TEST_F(AgcManagerDirectTest, StartupMinVolumeConfigurationIsRespected) { |
| FirstProcess(); |
| EXPECT_EQ(kInitialVolume, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, MicVolumeResponseToRmsError) { |
| FirstProcess(); |
| |
| // Compressor default; no residual error. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(5), Return(true))); |
| CallProcess(1); |
| |
| // Inside the compressor's window; no change of volume. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(10), Return(true))); |
| CallProcess(1); |
| |
| // Above the compressor's window; volume should be increased. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(130, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(20), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(168, manager_.stream_analog_level()); |
| |
| // Inside the compressor's window; no change of volume. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(5), Return(true))); |
| CallProcess(1); |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(0), Return(true))); |
| CallProcess(1); |
| |
| // Below the compressor's window; volume should be decreased. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-1), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(167, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-1), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(163, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-9), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(129, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, MicVolumeIsLimited) { |
| FirstProcess(); |
| |
| // Maximum upwards change is limited. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(30), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(183, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(30), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(243, manager_.stream_analog_level()); |
| |
| // Won't go higher than the maximum. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(30), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(255, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-1), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(254, manager_.stream_analog_level()); |
| |
| // Maximum downwards change is limited. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(194, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(137, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(88, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(54, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(33, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(18, manager_.stream_analog_level()); |
| |
| // Won't go lower than the minimum. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(12, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, CompressorStepsTowardsTarget) { |
| FirstProcess(); |
| |
| // Compressor default; no call to set_compression_gain_db. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(5), Return(true))) |
| .WillRepeatedly(Return(false)); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(20); |
| |
| // Moves slowly upwards. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(9), Return(true))) |
| .WillRepeatedly(Return(false)); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(8)).WillOnce(Return(0)); |
| CallProcess(1); |
| |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(9)).WillOnce(Return(0)); |
| CallProcess(1); |
| |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(20); |
| |
| // Moves slowly downward, then reverses before reaching the original target. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(5), Return(true))) |
| .WillRepeatedly(Return(false)); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(8)).WillOnce(Return(0)); |
| CallProcess(1); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(9), Return(true))) |
| .WillRepeatedly(Return(false)); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(9)).WillOnce(Return(0)); |
| CallProcess(1); |
| |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(20); |
| } |
| |
| TEST_F(AgcManagerDirectTest, CompressorErrorIsDeemphasized) { |
| FirstProcess(); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(10), Return(true))) |
| .WillRepeatedly(Return(false)); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(8)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(9)).WillOnce(Return(0)); |
| CallProcess(1); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(20); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(0), Return(true))) |
| .WillRepeatedly(Return(false)); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(8)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(7)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(6)).WillOnce(Return(0)); |
| CallProcess(1); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(_)).Times(0); |
| CallProcess(20); |
| } |
| |
| TEST_F(AgcManagerDirectTest, CompressorReachesMaximum) { |
| FirstProcess(); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(10), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(10), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(10), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(10), Return(true))) |
| .WillRepeatedly(Return(false)); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(8)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(9)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(10)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(11)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(12)).WillOnce(Return(0)); |
| CallProcess(1); |
| } |
| |
| TEST_F(AgcManagerDirectTest, CompressorReachesMinimum) { |
| FirstProcess(); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(0), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(0), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(0), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(0), Return(true))) |
| .WillRepeatedly(Return(false)); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(6)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(5)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(4)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(3)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(2)).WillOnce(Return(0)); |
| CallProcess(1); |
| } |
| |
| TEST_F(AgcManagerDirectTest, NoActionWhileMuted) { |
| manager_.HandleCaptureOutputUsedChange(false); |
| manager_.Process(nullptr); |
| absl::optional<int> new_digital_gain = manager_.GetDigitalComressionGain(); |
| if (new_digital_gain) { |
| gctrl_.set_compression_gain_db(*new_digital_gain); |
| } |
| } |
| |
| TEST_F(AgcManagerDirectTest, UnmutingChecksVolumeWithoutRaising) { |
| FirstProcess(); |
| |
| manager_.HandleCaptureOutputUsedChange(false); |
| manager_.HandleCaptureOutputUsedChange(true); |
| ExpectCheckVolumeAndReset(127); |
| // SetMicVolume should not be called. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)).WillOnce(Return(false)); |
| CallProcess(1); |
| EXPECT_EQ(127, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, UnmutingRaisesTooLowVolume) { |
| FirstProcess(); |
| |
| manager_.HandleCaptureOutputUsedChange(false); |
| manager_.HandleCaptureOutputUsedChange(true); |
| ExpectCheckVolumeAndReset(11); |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)).WillOnce(Return(false)); |
| CallProcess(1); |
| EXPECT_EQ(12, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ManualLevelChangeResultsInNoSetMicCall) { |
| FirstProcess(); |
| |
| // Change outside of compressor's range, which would normally trigger a call |
| // to SetMicVolume. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))); |
| |
| // When the analog volume changes, the gain controller is reset. |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| |
| // GetMicVolume returns a value outside of the quantization slack, indicating |
| // a manual volume change. |
| ASSERT_NE(manager_.stream_analog_level(), 154); |
| manager_.set_stream_analog_level(154); |
| CallProcess(1); |
| EXPECT_EQ(154, manager_.stream_analog_level()); |
| |
| // Do the same thing, except downwards now. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-1), Return(true))); |
| manager_.set_stream_analog_level(100); |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallProcess(1); |
| EXPECT_EQ(100, manager_.stream_analog_level()); |
| |
| // And finally verify the AGC continues working without a manual change. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-1), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(99, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, RecoveryAfterManualLevelChangeFromMax) { |
| FirstProcess(); |
| |
| // Force the mic up to max volume. Takes a few steps due to the residual |
| // gain limitation. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillRepeatedly(DoAll(SetArgPointee<0>(30), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(183, manager_.stream_analog_level()); |
| CallProcess(1); |
| EXPECT_EQ(243, manager_.stream_analog_level()); |
| CallProcess(1); |
| EXPECT_EQ(255, manager_.stream_analog_level()); |
| |
| // Manual change does not result in SetMicVolume call. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-1), Return(true))); |
| manager_.set_stream_analog_level(50); |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallProcess(1); |
| EXPECT_EQ(50, manager_.stream_analog_level()); |
| |
| // Continues working as usual afterwards. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(20), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(69, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, RecoveryAfterManualLevelChangeBelowMin) { |
| FirstProcess(); |
| |
| // Manual change below min. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-1), Return(true))); |
| // Don't set to zero, which will cause AGC to take no action. |
| manager_.set_stream_analog_level(1); |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallProcess(1); |
| EXPECT_EQ(1, manager_.stream_analog_level()); |
| |
| // Continues working as usual afterwards. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(2, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(30), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(11, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(20), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(18, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, NoClippingHasNoImpact) { |
| FirstProcess(); |
| |
| CallPreProc(100, 0); |
| EXPECT_EQ(128, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ClippingUnderThresholdHasNoImpact) { |
| FirstProcess(); |
| |
| CallPreProc(1, 0.099); |
| EXPECT_EQ(128, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ClippingLowersVolume) { |
| SetVolumeAndProcess(255); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, 0.2); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, WaitingPeriodBetweenClippingChecks) { |
| SetVolumeAndProcess(255); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(0); |
| CallPreProc(300, kAboveClippedThreshold); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(225, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ClippingLoweringIsLimited) { |
| SetVolumeAndProcess(180); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(kClippedMin, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(0); |
| CallPreProc(1000, kAboveClippedThreshold); |
| EXPECT_EQ(kClippedMin, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ClippingMaxIsRespectedWhenEqualToLevel) { |
| SetVolumeAndProcess(255); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillRepeatedly(DoAll(SetArgPointee<0>(30), Return(true))); |
| CallProcess(10); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ClippingMaxIsRespectedWhenHigherThanLevel) { |
| SetVolumeAndProcess(200); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(185, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillRepeatedly(DoAll(SetArgPointee<0>(40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| CallProcess(10); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, MaxCompressionIsIncreasedAfterClipping) { |
| SetVolumeAndProcess(210); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(195, manager_.stream_analog_level()); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(11), Return(true))) |
| .WillRepeatedly(Return(false)); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(8)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(9)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(10)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(11)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(12)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(13)).WillOnce(Return(0)); |
| CallProcess(1); |
| |
| // Continue clipping until we hit the maximum surplus compression. |
| CallPreProc(300, kAboveClippedThreshold); |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(180, manager_.stream_analog_level()); |
| |
| CallPreProc(300, kAboveClippedThreshold); |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(kClippedMin, manager_.stream_analog_level()); |
| |
| // Current level is now at the minimum, but the maximum allowed level still |
| // has more to decrease. |
| CallPreProc(300, kAboveClippedThreshold); |
| CallPreProc(1, kAboveClippedThreshold); |
| |
| CallPreProc(300, kAboveClippedThreshold); |
| CallPreProc(1, kAboveClippedThreshold); |
| |
| CallPreProc(300, kAboveClippedThreshold); |
| CallPreProc(1, kAboveClippedThreshold); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(16), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(16), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(16), Return(true))) |
| .WillOnce(DoAll(SetArgPointee<0>(16), Return(true))) |
| .WillRepeatedly(Return(false)); |
| CallProcess(19); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(14)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(15)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(16)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(17)).WillOnce(Return(0)); |
| CallProcess(20); |
| EXPECT_CALL(gctrl_, set_compression_gain_db(18)).WillOnce(Return(0)); |
| CallProcess(1); |
| } |
| |
| TEST_F(AgcManagerDirectTest, UserCanRaiseVolumeAfterClipping) { |
| SetVolumeAndProcess(225); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(210, manager_.stream_analog_level()); |
| |
| // High enough error to trigger a volume check. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(14), Return(true))); |
| // User changed the volume. |
| manager_.set_stream_analog_level(250); |
| EXPECT_CALL(*agc_, Reset()).Times(AtLeast(1)); |
| CallProcess(1); |
| EXPECT_EQ(250, manager_.stream_analog_level()); |
| |
| // Move down... |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(-10), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(210, manager_.stream_analog_level()); |
| // And back up to the new max established by the user. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(40), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(250, manager_.stream_analog_level()); |
| // Will not move above new maximum. |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillOnce(DoAll(SetArgPointee<0>(30), Return(true))); |
| CallProcess(1); |
| EXPECT_EQ(250, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ClippingDoesNotPullLowVolumeBackUp) { |
| SetVolumeAndProcess(80); |
| |
| EXPECT_CALL(*agc_, Reset()).Times(0); |
| int initial_volume = manager_.stream_analog_level(); |
| CallPreProc(1, kAboveClippedThreshold); |
| EXPECT_EQ(initial_volume, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, TakesNoActionOnZeroMicVolume) { |
| FirstProcess(); |
| |
| EXPECT_CALL(*agc_, GetRmsErrorDb(_)) |
| .WillRepeatedly(DoAll(SetArgPointee<0>(30), Return(true))); |
| manager_.set_stream_analog_level(0); |
| CallProcess(10); |
| EXPECT_EQ(0, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, ClippingDetectionLowersVolume) { |
| SetVolumeAndProcess(255); |
| EXPECT_EQ(255, manager_.stream_analog_level()); |
| CallPreProcForChangingAudio(/*num_calls=*/100, /*peak_ratio=*/0.99f); |
| EXPECT_EQ(255, manager_.stream_analog_level()); |
| CallPreProcForChangingAudio(/*num_calls=*/100, /*peak_ratio=*/1.0f); |
| EXPECT_EQ(240, manager_.stream_analog_level()); |
| } |
| |
| TEST_F(AgcManagerDirectTest, DisabledClippingPredictorDoesNotLowerVolume) { |
| SetVolumeAndProcess(255); |
| EXPECT_FALSE(manager_.clipping_predictor_enabled()); |
| EXPECT_EQ(255, manager_.stream_analog_level()); |
| CallPreProcForChangingAudio(/*num_calls=*/100, /*peak_ratio=*/0.99f); |
| EXPECT_EQ(255, manager_.stream_analog_level()); |
| CallPreProcForChangingAudio(/*num_calls=*/100, /*peak_ratio=*/0.99f); |
| EXPECT_EQ(255, manager_.stream_analog_level()); |
| } |
| |
| TEST(AgcManagerDirectStandaloneTest, DisableDigitalDisablesDigital) { |
| auto agc = std::unique_ptr<Agc>(new ::testing::NiceMock<MockAgc>()); |
| MockGainControl gctrl; |
| EXPECT_CALL(gctrl, set_mode(GainControl::kFixedDigital)); |
| EXPECT_CALL(gctrl, set_target_level_dbfs(0)); |
| EXPECT_CALL(gctrl, set_compression_gain_db(0)); |
| EXPECT_CALL(gctrl, enable_limiter(false)); |
| |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(kInitialVolume, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| manager->Initialize(); |
| manager->SetupDigitalGainControl(&gctrl); |
| } |
| |
| TEST(AgcManagerDirectStandaloneTest, AgcMinMicLevelExperiment) { |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(kInitialVolume, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| EXPECT_EQ(manager->channel_agcs_[0]->min_mic_level(), kMinMicLevel); |
| EXPECT_EQ(manager->channel_agcs_[0]->startup_min_level(), kInitialVolume); |
| } |
| |
| TEST(AgcManagerDirectStandaloneTest, AgcMinMicLevelExperimentDisabled) { |
| test::ScopedFieldTrials field_trial( |
| "WebRTC-Audio-AgcMinMicLevelExperiment/Disabled/"); |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(kInitialVolume, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| EXPECT_EQ(manager->channel_agcs_[0]->min_mic_level(), kMinMicLevel); |
| EXPECT_EQ(manager->channel_agcs_[0]->startup_min_level(), kInitialVolume); |
| } |
| |
| // Checks that a field-trial parameter outside of the valid range [0,255] is |
| // ignored. |
| TEST(AgcManagerDirectStandaloneTest, AgcMinMicLevelExperimentOutOfRangeAbove) { |
| test::ScopedFieldTrials field_trial( |
| "WebRTC-Audio-AgcMinMicLevelExperiment/Enabled-256/"); |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(kInitialVolume, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| EXPECT_EQ(manager->channel_agcs_[0]->min_mic_level(), kMinMicLevel); |
| EXPECT_EQ(manager->channel_agcs_[0]->startup_min_level(), kInitialVolume); |
| } |
| |
| // Checks that a field-trial parameter outside of the valid range [0,255] is |
| // ignored. |
| TEST(AgcManagerDirectStandaloneTest, AgcMinMicLevelExperimentOutOfRangeBelow) { |
| test::ScopedFieldTrials field_trial( |
| "WebRTC-Audio-AgcMinMicLevelExperiment/Enabled--1/"); |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(kInitialVolume, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| EXPECT_EQ(manager->channel_agcs_[0]->min_mic_level(), kMinMicLevel); |
| EXPECT_EQ(manager->channel_agcs_[0]->startup_min_level(), kInitialVolume); |
| } |
| |
| // Verifies that a valid experiment changes the minimum microphone level. The |
| // start volume is larger than the min level and should therefore not be |
| // changed. |
| TEST(AgcManagerDirectStandaloneTest, AgcMinMicLevelExperimentEnabled50) { |
| test::ScopedFieldTrials field_trial( |
| "WebRTC-Audio-AgcMinMicLevelExperiment/Enabled-50/"); |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(kInitialVolume, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| EXPECT_EQ(manager->channel_agcs_[0]->min_mic_level(), 50); |
| EXPECT_EQ(manager->channel_agcs_[0]->startup_min_level(), kInitialVolume); |
| } |
| |
| // Uses experiment to reduce the default minimum microphone level, start at a |
| // lower level and ensure that the startup level is increased to the min level |
| // set by the experiment. |
| TEST(AgcManagerDirectStandaloneTest, |
| AgcMinMicLevelExperimentEnabledAboveStartupLevel) { |
| test::ScopedFieldTrials field_trial( |
| "WebRTC-Audio-AgcMinMicLevelExperiment/Enabled-50/"); |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(/*startup_min_level=*/30, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| EXPECT_EQ(manager->channel_agcs_[0]->min_mic_level(), 50); |
| EXPECT_EQ(manager->channel_agcs_[0]->startup_min_level(), 50); |
| } |
| |
| // TODO(bugs.webrtc.org/12774): Test the bahavior of `clipped_level_step`. |
| // TODO(bugs.webrtc.org/12774): Test the bahavior of `clipped_ratio_threshold`. |
| // TODO(bugs.webrtc.org/12774): Test the bahavior of `clipped_wait_frames`. |
| // Verifies that configurable clipping parameters are initialized as intended. |
| TEST(AgcManagerDirectStandaloneTest, ClippingParametersVerified) { |
| std::unique_ptr<AgcManagerDirect> manager = |
| CreateAgcManagerDirect(kInitialVolume, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames); |
| manager->Initialize(); |
| EXPECT_EQ(manager->clipped_level_step_, kClippedLevelStep); |
| EXPECT_EQ(manager->clipped_ratio_threshold_, kClippedRatioThreshold); |
| EXPECT_EQ(manager->clipped_wait_frames_, kClippedWaitFrames); |
| std::unique_ptr<AgcManagerDirect> manager_custom = |
| CreateAgcManagerDirect(kInitialVolume, |
| /*clipped_level_step=*/10, |
| /*clipped_ratio_threshold=*/0.2f, |
| /*clipped_wait_frames=*/50); |
| manager_custom->Initialize(); |
| EXPECT_EQ(manager_custom->clipped_level_step_, 10); |
| EXPECT_EQ(manager_custom->clipped_ratio_threshold_, 0.2f); |
| EXPECT_EQ(manager_custom->clipped_wait_frames_, 50); |
| } |
| |
| TEST(AgcManagerDirectStandaloneTest, |
| DisableClippingPredictorDisablesClippingPredictor) { |
| ClippingPredictorConfig default_config; |
| EXPECT_FALSE(default_config.enabled); |
| std::unique_ptr<AgcManagerDirect> manager = CreateAgcManagerDirect( |
| kInitialVolume, kClippedLevelStep, kClippedRatioThreshold, |
| kClippedWaitFrames, default_config); |
| manager->Initialize(); |
| EXPECT_FALSE(manager->clipping_predictor_enabled()); |
| } |
| |
| TEST(AgcManagerDirectStandaloneTest, |
| EnableClippingPredictorEnablesClippingPredictor) { |
| const ClippingPredictorConfig config( |
| {/*enabled=*/true, ClippingPredictorConfig::kClippingEventPrediction, |
| /*window_length=*/5, /*reference_window_length=*/5, |
| /*reference_window_delay=*/5, /*clipping_threshold=*/-1.0f, |
| /*crest_factor_margin=*/3.0f}); |
| std::unique_ptr<AgcManagerDirect> manager = CreateAgcManagerDirect( |
| kInitialVolume, kClippedLevelStep, kClippedRatioThreshold, |
| kClippedWaitFrames, config); |
| manager->Initialize(); |
| EXPECT_TRUE(manager->clipping_predictor_enabled()); |
| } |
| |
| TEST(AgcManagerDirectStandaloneTest, |
| DisableClippingPredictorDoesNotLowerVolume) { |
| const ClippingPredictorConfig default_config; |
| EXPECT_FALSE(default_config.enabled); |
| AgcManagerDirect manager(new ::testing::NiceMock<MockAgc>(), kInitialVolume, |
| kClippedMin, kSampleRateHz, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames, |
| default_config); |
| manager.Initialize(); |
| manager.set_stream_analog_level(/*level=*/255); |
| EXPECT_FALSE(manager.clipping_predictor_enabled()); |
| EXPECT_EQ(manager.stream_analog_level(), 255); |
| manager.Process(nullptr); |
| CallPreProcessAudioBuffer(/*num_calls=*/10, /*peak_ratio=*/0.99f, manager); |
| EXPECT_EQ(manager.stream_analog_level(), 255); |
| CallPreProcessAudioBuffer(/*num_calls=*/300, /*peak_ratio=*/0.99f, manager); |
| EXPECT_EQ(manager.stream_analog_level(), 255); |
| CallPreProcessAudioBuffer(/*num_calls=*/10, /*peak_ratio=*/0.99f, manager); |
| EXPECT_EQ(manager.stream_analog_level(), 255); |
| } |
| |
| TEST(AgcManagerDirectStandaloneTest, EnableClippingPredictorLowersVolume) { |
| const ClippingPredictorConfig config( |
| {/*enabled=*/true, ClippingPredictorConfig::kClippingEventPrediction, |
| /*window_length=*/5, /*reference_window_length=*/5, |
| /*reference_window_delay=*/5, /*clipping_threshold=*/-1.0f, |
| /*crest_factor_margin=*/3.0f}); |
| AgcManagerDirect manager(new ::testing::NiceMock<MockAgc>(), kInitialVolume, |
| kClippedMin, kSampleRateHz, kClippedLevelStep, |
| kClippedRatioThreshold, kClippedWaitFrames, config); |
| manager.Initialize(); |
| manager.set_stream_analog_level(/*level=*/255); |
| EXPECT_TRUE(manager.clipping_predictor_enabled()); |
| EXPECT_EQ(manager.stream_analog_level(), 255); |
| manager.Process(nullptr); |
| CallPreProcessAudioBuffer(/*num_calls=*/10, /*peak_ratio=*/0.99f, manager); |
| EXPECT_EQ(manager.stream_analog_level(), 240); |
| CallPreProcessAudioBuffer(/*num_calls=*/300, /*peak_ratio=*/0.99f, manager); |
| EXPECT_EQ(manager.stream_analog_level(), 240); |
| CallPreProcessAudioBuffer(/*num_calls=*/10, /*peak_ratio=*/0.99f, manager); |
| EXPECT_EQ(manager.stream_analog_level(), 225); |
| } |
| |
| } // namespace webrtc |
