| /* |
| * Copyright (c) 2017 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/audio_processing/aec3/echo_path_delay_estimator.h" |
| |
| #include <algorithm> |
| #include <sstream> |
| #include <string> |
| |
| #include "webrtc/modules/audio_processing/aec3/aec3_common.h" |
| #include "webrtc/modules/audio_processing/aec3/render_delay_buffer.h" |
| #include "webrtc/modules/audio_processing/logging/apm_data_dumper.h" |
| #include "webrtc/modules/audio_processing/test/echo_canceller_test_tools.h" |
| #include "webrtc/rtc_base/random.h" |
| #include "webrtc/test/gtest.h" |
| |
| namespace webrtc { |
| namespace { |
| |
| std::string ProduceDebugText(size_t delay) { |
| std::ostringstream ss; |
| ss << "Delay: " << delay; |
| return ss.str(); |
| } |
| |
| } // namespace |
| |
| // Verifies that the basic API calls work. |
| TEST(EchoPathDelayEstimator, BasicApiCalls) { |
| ApmDataDumper data_dumper(0); |
| std::unique_ptr<RenderDelayBuffer> render_delay_buffer( |
| RenderDelayBuffer::Create(3)); |
| EchoPathDelayEstimator estimator(&data_dumper, |
| AudioProcessing::Config::EchoCanceller3()); |
| std::vector<std::vector<float>> render(3, std::vector<float>(kBlockSize)); |
| std::vector<float> capture(kBlockSize); |
| for (size_t k = 0; k < 100; ++k) { |
| render_delay_buffer->Insert(render); |
| estimator.EstimateDelay(render_delay_buffer->GetDownsampledRenderBuffer(), |
| capture); |
| } |
| } |
| |
| // Verifies that the delay estimator produces correct delay for artificially |
| // delayed signals. |
| TEST(EchoPathDelayEstimator, DelayEstimation) { |
| Random random_generator(42U); |
| std::vector<std::vector<float>> render(3, std::vector<float>(kBlockSize)); |
| std::vector<float> capture(kBlockSize); |
| ApmDataDumper data_dumper(0); |
| for (size_t delay_samples : {15, 64, 150, 200, 800, 4000}) { |
| SCOPED_TRACE(ProduceDebugText(delay_samples)); |
| std::unique_ptr<RenderDelayBuffer> render_delay_buffer( |
| RenderDelayBuffer::Create(3)); |
| DelayBuffer<float> signal_delay_buffer(delay_samples); |
| EchoPathDelayEstimator estimator(&data_dumper, |
| AudioProcessing::Config::EchoCanceller3()); |
| |
| rtc::Optional<size_t> estimated_delay_samples; |
| for (size_t k = 0; k < (100 + delay_samples / kBlockSize); ++k) { |
| RandomizeSampleVector(&random_generator, render[0]); |
| signal_delay_buffer.Delay(render[0], capture); |
| render_delay_buffer->Insert(render); |
| render_delay_buffer->UpdateBuffers(); |
| estimated_delay_samples = estimator.EstimateDelay( |
| render_delay_buffer->GetDownsampledRenderBuffer(), capture); |
| } |
| if (estimated_delay_samples) { |
| // Due to the internal down-sampling by 4 done inside the delay estimator |
| // the estimated delay cannot be expected to be closer than 4 samples to |
| // the true delay. |
| EXPECT_NEAR(delay_samples, *estimated_delay_samples, 4); |
| } else { |
| ADD_FAILURE(); |
| } |
| } |
| } |
| |
| // Verifies that the delay estimator does not produce delay estimates too |
| // quickly. |
| TEST(EchoPathDelayEstimator, NoInitialDelayestimates) { |
| Random random_generator(42U); |
| std::vector<std::vector<float>> render(3, std::vector<float>(kBlockSize)); |
| std::vector<float> capture(kBlockSize); |
| ApmDataDumper data_dumper(0); |
| std::unique_ptr<RenderDelayBuffer> render_delay_buffer( |
| RenderDelayBuffer::Create(3)); |
| |
| EchoPathDelayEstimator estimator(&data_dumper, |
| AudioProcessing::Config::EchoCanceller3()); |
| for (size_t k = 0; k < 19; ++k) { |
| RandomizeSampleVector(&random_generator, render[0]); |
| std::copy(render[0].begin(), render[0].end(), capture.begin()); |
| render_delay_buffer->Insert(render); |
| render_delay_buffer->UpdateBuffers(); |
| EXPECT_FALSE(estimator.EstimateDelay( |
| render_delay_buffer->GetDownsampledRenderBuffer(), capture)); |
| } |
| } |
| |
| // Verifies that the delay estimator does not produce delay estimates for render |
| // signals of low level. |
| TEST(EchoPathDelayEstimator, NoDelayEstimatesForLowLevelRenderSignals) { |
| Random random_generator(42U); |
| std::vector<std::vector<float>> render(3, std::vector<float>(kBlockSize)); |
| std::vector<float> capture(kBlockSize); |
| ApmDataDumper data_dumper(0); |
| EchoPathDelayEstimator estimator(&data_dumper, |
| AudioProcessing::Config::EchoCanceller3()); |
| std::unique_ptr<RenderDelayBuffer> render_delay_buffer( |
| RenderDelayBuffer::Create(3)); |
| for (size_t k = 0; k < 100; ++k) { |
| RandomizeSampleVector(&random_generator, render[0]); |
| for (auto& render_k : render[0]) { |
| render_k *= 100.f / 32767.f; |
| } |
| std::copy(render[0].begin(), render[0].end(), capture.begin()); |
| render_delay_buffer->Insert(render); |
| render_delay_buffer->UpdateBuffers(); |
| EXPECT_FALSE(estimator.EstimateDelay( |
| render_delay_buffer->GetDownsampledRenderBuffer(), capture)); |
| } |
| } |
| |
| // Verifies that the delay estimator does not produce delay estimates for |
| // uncorrelated signals. |
| TEST(EchoPathDelayEstimator, NoDelayEstimatesForUncorrelatedSignals) { |
| Random random_generator(42U); |
| std::vector<std::vector<float>> render(3, std::vector<float>(kBlockSize)); |
| std::vector<float> capture(kBlockSize); |
| ApmDataDumper data_dumper(0); |
| EchoPathDelayEstimator estimator(&data_dumper, |
| AudioProcessing::Config::EchoCanceller3()); |
| std::unique_ptr<RenderDelayBuffer> render_delay_buffer( |
| RenderDelayBuffer::Create(3)); |
| for (size_t k = 0; k < 100; ++k) { |
| RandomizeSampleVector(&random_generator, render[0]); |
| RandomizeSampleVector(&random_generator, capture); |
| render_delay_buffer->Insert(render); |
| render_delay_buffer->UpdateBuffers(); |
| EXPECT_FALSE(estimator.EstimateDelay( |
| render_delay_buffer->GetDownsampledRenderBuffer(), capture)); |
| } |
| } |
| |
| #if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID) |
| |
| // Verifies the check for the render blocksize. |
| // TODO(peah): Re-enable the test once the issue with memory leaks during DEATH |
| // tests on test bots has been fixed. |
| TEST(EchoPathDelayEstimator, DISABLED_WrongRenderBlockSize) { |
| ApmDataDumper data_dumper(0); |
| EchoPathDelayEstimator estimator(&data_dumper, |
| AudioProcessing::Config::EchoCanceller3()); |
| std::unique_ptr<RenderDelayBuffer> render_delay_buffer( |
| RenderDelayBuffer::Create(3)); |
| std::vector<float> capture(kBlockSize); |
| EXPECT_DEATH(estimator.EstimateDelay( |
| render_delay_buffer->GetDownsampledRenderBuffer(), capture), |
| ""); |
| } |
| |
| // Verifies the check for the capture blocksize. |
| // TODO(peah): Re-enable the test once the issue with memory leaks during DEATH |
| // tests on test bots has been fixed. |
| TEST(EchoPathDelayEstimator, WrongCaptureBlockSize) { |
| ApmDataDumper data_dumper(0); |
| EchoPathDelayEstimator estimator(&data_dumper, |
| AudioProcessing::Config::EchoCanceller3()); |
| std::unique_ptr<RenderDelayBuffer> render_delay_buffer( |
| RenderDelayBuffer::Create(3)); |
| std::vector<float> capture(std::vector<float>(kBlockSize - 1)); |
| EXPECT_DEATH(estimator.EstimateDelay( |
| render_delay_buffer->GetDownsampledRenderBuffer(), capture), |
| ""); |
| } |
| |
| // Verifies the check for non-null data dumper. |
| TEST(EchoPathDelayEstimator, NullDataDumper) { |
| EXPECT_DEATH(EchoPathDelayEstimator( |
| nullptr, AudioProcessing::Config::EchoCanceller3()), |
| ""); |
| } |
| |
| #endif |
| |
| } // namespace webrtc |