modules/audio_processing/aec3/block_processor_unittest.cc - src/ - Git at Google

 /*
  *  Copyright (c) 2016 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/aec3/block_processor.h"

 #include <memory>
 #include <string>
 #include <vector>

 #include "modules/audio_processing/aec3/aec3_common.h"
 #include "modules/audio_processing/aec3/mock/mock_echo_remover.h"
 #include "modules/audio_processing/aec3/mock/mock_render_delay_buffer.h"
 #include "modules/audio_processing/aec3/mock/mock_render_delay_controller.h"
 #include "modules/audio_processing/test/echo_canceller_test_tools.h"
 #include "rtc_base/checks.h"
 #include "rtc_base/random.h"
 #include "rtc_base/strings/string_builder.h"
 #include "test/gmock.h"
 #include "test/gtest.h"

 namespace webrtc {
 namespace {

 using ::testing::_;
 using ::testing::AtLeast;
 using ::testing::NiceMock;
 using ::testing::Return;
 using ::testing::StrictMock;

 // Verifies that the basic BlockProcessor functionality works and that the API
 // methods are callable.
 void RunBasicSetupAndApiCallTest(int sample_rate_hz, int num_iterations) {
   constexpr size_t kNumRenderChannels = 1;
   constexpr size_t kNumCaptureChannels = 1;

   std::unique_ptr<BlockProcessor> block_processor(
       BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
                              kNumRenderChannels, kNumCaptureChannels));
   Block block(NumBandsForRate(sample_rate_hz), kNumRenderChannels, 1000.f);
   for (int k = 0; k < num_iterations; ++k) {
     block_processor->BufferRender(block);
     block_processor->ProcessCapture(false, false, nullptr, &block);
     block_processor->UpdateEchoLeakageStatus(false);
   }
 }

 #if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
 void RunRenderBlockSizeVerificationTest(int sample_rate_hz) {
   constexpr size_t kNumRenderChannels = 1;
   constexpr size_t kNumCaptureChannels = 1;

   std::unique_ptr<BlockProcessor> block_processor(
       BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
                              kNumRenderChannels, kNumCaptureChannels));
   Block block(NumBandsForRate(sample_rate_hz), kNumRenderChannels);

   EXPECT_DEATH(block_processor->BufferRender(block), "");
 }

 void RunRenderNumBandsVerificationTest(int sample_rate_hz) {
   constexpr size_t kNumRenderChannels = 1;
   constexpr size_t kNumCaptureChannels = 1;

   const size_t wrong_num_bands = NumBandsForRate(sample_rate_hz) < 3
                                      ? NumBandsForRate(sample_rate_hz) + 1
                                      : 1;
   std::unique_ptr<BlockProcessor> block_processor(
       BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
                              kNumRenderChannels, kNumCaptureChannels));
   Block block(wrong_num_bands, kNumRenderChannels);

   EXPECT_DEATH(block_processor->BufferRender(block), "");
 }

 void RunCaptureNumBandsVerificationTest(int sample_rate_hz) {
   constexpr size_t kNumRenderChannels = 1;
   constexpr size_t kNumCaptureChannels = 1;

   const size_t wrong_num_bands = NumBandsForRate(sample_rate_hz) < 3
                                      ? NumBandsForRate(sample_rate_hz) + 1
                                      : 1;
   std::unique_ptr<BlockProcessor> block_processor(
       BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
                              kNumRenderChannels, kNumCaptureChannels));
   Block block(wrong_num_bands, kNumRenderChannels);

   EXPECT_DEATH(block_processor->ProcessCapture(false, false, nullptr, &block),
                "");
 }
 #endif

 std::string ProduceDebugText(int sample_rate_hz) {
   rtc::StringBuilder ss;
   ss << "Sample rate: " << sample_rate_hz;
   return ss.Release();
 }

 void FillSampleVector(int call_counter,
                       int delay,
                       rtc::ArrayView<float> samples) {
   for (size_t i = 0; i < samples.size(); ++i) {
     samples[i] = (call_counter - delay) * 10000.0f + i;
   }
 }

 }  // namespace

 // Verifies that the delay controller functionality is properly integrated with
 // the render delay buffer inside block processor.
 // TODO(peah): Activate the unittest once the required code has been landed.
 TEST(BlockProcessor, DISABLED_DelayControllerIntegration) {
   constexpr size_t kNumRenderChannels = 1;
   constexpr size_t kNumCaptureChannels = 1;
   constexpr size_t kNumBlocks = 310;
   constexpr size_t kDelayInSamples = 640;
   constexpr size_t kDelayHeadroom = 1;
   constexpr size_t kDelayInBlocks =
       kDelayInSamples / kBlockSize - kDelayHeadroom;
   Random random_generator(42U);
   for (auto rate : {16000, 32000, 48000}) {
     SCOPED_TRACE(ProduceDebugText(rate));
     std::unique_ptr<testing::StrictMock<webrtc::test::MockRenderDelayBuffer>>
         render_delay_buffer_mock(
             new StrictMock<webrtc::test::MockRenderDelayBuffer>(rate, 1));
     EXPECT_CALL(*render_delay_buffer_mock, Insert(_))
         .Times(kNumBlocks)
         .WillRepeatedly(Return(RenderDelayBuffer::BufferingEvent::kNone));
     EXPECT_CALL(*render_delay_buffer_mock, AlignFromDelay(kDelayInBlocks))
         .Times(AtLeast(1));
     EXPECT_CALL(*render_delay_buffer_mock, MaxDelay()).WillOnce(Return(30));
     EXPECT_CALL(*render_delay_buffer_mock, Delay())
         .Times(kNumBlocks + 1)
         .WillRepeatedly(Return(0));
     std::unique_ptr<BlockProcessor> block_processor(BlockProcessor::Create(
         EchoCanceller3Config(), rate, kNumRenderChannels, kNumCaptureChannels,
         std::move(render_delay_buffer_mock)));

     Block render_block(NumBandsForRate(rate), kNumRenderChannels);
     Block capture_block(NumBandsForRate(rate), kNumCaptureChannels);
     DelayBuffer<float> signal_delay_buffer(kDelayInSamples);
     for (size_t k = 0; k < kNumBlocks; ++k) {
       RandomizeSampleVector(&random_generator,
                             render_block.View(/*band=*/0, /*capture=*/0));
       signal_delay_buffer.Delay(render_block.View(/*band=*/0, /*capture=*/0),
                                 capture_block.View(/*band=*/0, /*capture=*/0));
       block_processor->BufferRender(render_block);
       block_processor->ProcessCapture(false, false, nullptr, &capture_block);
     }
   }
 }

 // Verifies that BlockProcessor submodules are called in a proper manner.
 TEST(BlockProcessor, DISABLED_SubmoduleIntegration) {
   constexpr size_t kNumBlocks = 310;
   constexpr size_t kNumRenderChannels = 1;
   constexpr size_t kNumCaptureChannels = 1;

   Random random_generator(42U);
   for (auto rate : {16000, 32000, 48000}) {
     SCOPED_TRACE(ProduceDebugText(rate));
     std::unique_ptr<testing::StrictMock<webrtc::test::MockRenderDelayBuffer>>
         render_delay_buffer_mock(
             new StrictMock<webrtc::test::MockRenderDelayBuffer>(rate, 1));
     std::unique_ptr<
         ::testing::StrictMock<webrtc::test::MockRenderDelayController>>
         render_delay_controller_mock(
             new StrictMock<webrtc::test::MockRenderDelayController>());
     std::unique_ptr<testing::StrictMock<webrtc::test::MockEchoRemover>>
         echo_remover_mock(new StrictMock<webrtc::test::MockEchoRemover>());

     EXPECT_CALL(*render_delay_buffer_mock, Insert(_))
         .Times(kNumBlocks - 1)
         .WillRepeatedly(Return(RenderDelayBuffer::BufferingEvent::kNone));
     EXPECT_CALL(*render_delay_buffer_mock, PrepareCaptureProcessing())
         .Times(kNumBlocks);
     EXPECT_CALL(*render_delay_buffer_mock, AlignFromDelay(9)).Times(AtLeast(1));
     EXPECT_CALL(*render_delay_buffer_mock, Delay())
         .Times(kNumBlocks)
         .WillRepeatedly(Return(0));
     EXPECT_CALL(*render_delay_controller_mock, GetDelay(_, _, _))
         .Times(kNumBlocks);
     EXPECT_CALL(*echo_remover_mock, ProcessCapture(_, _, _, _, _, _))
         .Times(kNumBlocks);
     EXPECT_CALL(*echo_remover_mock, UpdateEchoLeakageStatus(_))
         .Times(kNumBlocks);

     std::unique_ptr<BlockProcessor> block_processor(BlockProcessor::Create(
         EchoCanceller3Config(), rate, kNumRenderChannels, kNumCaptureChannels,
         std::move(render_delay_buffer_mock),
         std::move(render_delay_controller_mock), std::move(echo_remover_mock)));

     Block render_block(NumBandsForRate(rate), kNumRenderChannels);
     Block capture_block(NumBandsForRate(rate), kNumCaptureChannels);
     DelayBuffer<float> signal_delay_buffer(640);
     for (size_t k = 0; k < kNumBlocks; ++k) {
       RandomizeSampleVector(&random_generator,
                             render_block.View(/*band=*/0, /*capture=*/0));
       signal_delay_buffer.Delay(render_block.View(/*band=*/0, /*capture=*/0),
                                 capture_block.View(/*band=*/0, /*capture=*/0));
       block_processor->BufferRender(render_block);
       block_processor->ProcessCapture(false, false, nullptr, &capture_block);
       block_processor->UpdateEchoLeakageStatus(false);
     }
   }
 }

 TEST(BlockProcessor, BasicSetupAndApiCalls) {
   for (auto rate : {16000, 32000, 48000}) {
     SCOPED_TRACE(ProduceDebugText(rate));
     RunBasicSetupAndApiCallTest(rate, 1);
   }
 }

 TEST(BlockProcessor, TestLongerCall) {
   RunBasicSetupAndApiCallTest(16000, 20 * kNumBlocksPerSecond);
 }

 #if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
 // TODO(gustaf): Re-enable the test once the issue with memory leaks during
 // DEATH tests on test bots has been fixed.
 TEST(BlockProcessorDeathTest, DISABLED_VerifyRenderBlockSizeCheck) {
   for (auto rate : {16000, 32000, 48000}) {
     SCOPED_TRACE(ProduceDebugText(rate));
     RunRenderBlockSizeVerificationTest(rate);
   }
 }

 TEST(BlockProcessorDeathTest, VerifyRenderNumBandsCheck) {
   for (auto rate : {16000, 32000, 48000}) {
     SCOPED_TRACE(ProduceDebugText(rate));
     RunRenderNumBandsVerificationTest(rate);
   }
 }

 // TODO(peah): Verify the check for correct number of bands in the capture
 // signal.
 TEST(BlockProcessorDeathTest, VerifyCaptureNumBandsCheck) {
   for (auto rate : {16000, 32000, 48000}) {
     SCOPED_TRACE(ProduceDebugText(rate));
     RunCaptureNumBandsVerificationTest(rate);
   }
 }

 // Verifiers that the verification for null ProcessCapture input works.
 TEST(BlockProcessorDeathTest, NullProcessCaptureParameter) {
   EXPECT_DEATH(std::unique_ptr<BlockProcessor>(
                    BlockProcessor::Create(EchoCanceller3Config(), 16000, 1, 1))
                    ->ProcessCapture(false, false, nullptr, nullptr),
                "");
 }

 // Verifies the check for correct sample rate.
 // TODO(peah): Re-enable the test once the issue with memory leaks during DEATH
 // tests on test bots has been fixed.
 TEST(BlockProcessor, DISABLED_WrongSampleRate) {
   EXPECT_DEATH(std::unique_ptr<BlockProcessor>(
                    BlockProcessor::Create(EchoCanceller3Config(), 8001, 1, 1)),
                "");
 }

 #endif

 // Verifies that external delay estimator delays are applied correctly when a
 // call begins with a sequence of capture blocks.
 TEST(BlockProcessor, ExternalDelayAppliedCorrectlyWithInitialCaptureCalls) {
   constexpr int kNumRenderChannels = 1;
   constexpr int kNumCaptureChannels = 1;
   constexpr int kSampleRateHz = 16000;

   EchoCanceller3Config config;
   config.delay.use_external_delay_estimator = true;

   std::unique_ptr<RenderDelayBuffer> delay_buffer(
       RenderDelayBuffer::Create(config, kSampleRateHz, kNumRenderChannels));

   std::unique_ptr<testing::NiceMock<webrtc::test::MockEchoRemover>>
       echo_remover_mock(new NiceMock<webrtc::test::MockEchoRemover>());
   webrtc::test::MockEchoRemover* echo_remover_mock_pointer =
       echo_remover_mock.get();

   std::unique_ptr<BlockProcessor> block_processor(BlockProcessor::Create(
       config, kSampleRateHz, kNumRenderChannels, kNumCaptureChannels,
       std::move(delay_buffer), /*delay_controller=*/nullptr,
       std::move(echo_remover_mock)));

   Block render_block(NumBandsForRate(kSampleRateHz), kNumRenderChannels);
   Block capture_block(NumBandsForRate(kSampleRateHz), kNumCaptureChannels);

   // Process...
   // - 10 capture calls, where no render data is available,
   // - 10 render calls, populating the buffer,
   // - 2 capture calls, verifying that the delay was applied correctly.
   constexpr int kDelayInBlocks = 5;
   constexpr int kDelayInMs = 20;
   block_processor->SetAudioBufferDelay(kDelayInMs);

   int capture_call_counter = 0;
   int render_call_counter = 0;
   for (size_t k = 0; k < 10; ++k) {
     FillSampleVector(++capture_call_counter, kDelayInBlocks,
                      capture_block.View(/*band=*/0, /*capture=*/0));
     block_processor->ProcessCapture(false, false, nullptr, &capture_block);
   }
   for (size_t k = 0; k < 10; ++k) {
     FillSampleVector(++render_call_counter, 0,
                      render_block.View(/*band=*/0, /*capture=*/0));
     block_processor->BufferRender(render_block);
   }

   EXPECT_CALL(*echo_remover_mock_pointer, ProcessCapture)
       .WillRepeatedly(
           [](EchoPathVariability /*echo_path_variability*/,
              bool /*capture_signal_saturation*/,
              const absl::optional<DelayEstimate>& /*external_delay*/,
              RenderBuffer* render_buffer, Block* /*linear_output*/,
              Block* capture) {
             const auto& render = render_buffer->GetBlock(0);
             const auto render_view = render.View(/*band=*/0, /*channel=*/0);
             const auto capture_view = capture->View(/*band=*/0, /*channel=*/0);
             for (size_t i = 0; i < kBlockSize; ++i) {
               EXPECT_FLOAT_EQ(render_view[i], capture_view[i]);
             }
           });

   FillSampleVector(++capture_call_counter, kDelayInBlocks,
                    capture_block.View(/*band=*/0, /*capture=*/0));
   block_processor->ProcessCapture(false, false, nullptr, &capture_block);

   FillSampleVector(++capture_call_counter, kDelayInBlocks,
                    capture_block.View(/*band=*/0, /*capture=*/0));
   block_processor->ProcessCapture(false, false, nullptr, &capture_block);
 }

 }  // namespace webrtc
	/*
	* Copyright (c) 2016 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/aec3/block_processor.h"

	#include <memory>
	#include <string>
	#include <vector>

	#include "modules/audio_processing/aec3/aec3_common.h"
	#include "modules/audio_processing/aec3/mock/mock_echo_remover.h"
	#include "modules/audio_processing/aec3/mock/mock_render_delay_buffer.h"
	#include "modules/audio_processing/aec3/mock/mock_render_delay_controller.h"
	#include "modules/audio_processing/test/echo_canceller_test_tools.h"
	#include "rtc_base/checks.h"
	#include "rtc_base/random.h"
	#include "rtc_base/strings/string_builder.h"
	#include "test/gmock.h"
	#include "test/gtest.h"

	namespace webrtc {
	namespace {

	using ::testing::_;
	using ::testing::AtLeast;
	using ::testing::NiceMock;
	using ::testing::Return;
	using ::testing::StrictMock;

	// Verifies that the basic BlockProcessor functionality works and that the API
	// methods are callable.
	void RunBasicSetupAndApiCallTest(int sample_rate_hz, int num_iterations) {
	constexpr size_t kNumRenderChannels = 1;
	constexpr size_t kNumCaptureChannels = 1;

	std::unique_ptr<BlockProcessor> block_processor(
	BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
	kNumRenderChannels, kNumCaptureChannels));
	Block block(NumBandsForRate(sample_rate_hz), kNumRenderChannels, 1000.f);
	for (int k = 0; k < num_iterations; ++k) {
	block_processor->BufferRender(block);
	block_processor->ProcessCapture(false, false, nullptr, &block);
	block_processor->UpdateEchoLeakageStatus(false);
	}
	}

	#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
	void RunRenderBlockSizeVerificationTest(int sample_rate_hz) {
	constexpr size_t kNumRenderChannels = 1;
	constexpr size_t kNumCaptureChannels = 1;

	std::unique_ptr<BlockProcessor> block_processor(
	BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
	kNumRenderChannels, kNumCaptureChannels));
	Block block(NumBandsForRate(sample_rate_hz), kNumRenderChannels);

	EXPECT_DEATH(block_processor->BufferRender(block), "");
	}

	void RunRenderNumBandsVerificationTest(int sample_rate_hz) {
	constexpr size_t kNumRenderChannels = 1;
	constexpr size_t kNumCaptureChannels = 1;

	const size_t wrong_num_bands = NumBandsForRate(sample_rate_hz) < 3
	? NumBandsForRate(sample_rate_hz) + 1
	: 1;
	std::unique_ptr<BlockProcessor> block_processor(
	BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
	kNumRenderChannels, kNumCaptureChannels));
	Block block(wrong_num_bands, kNumRenderChannels);

	EXPECT_DEATH(block_processor->BufferRender(block), "");
	}

	void RunCaptureNumBandsVerificationTest(int sample_rate_hz) {
	constexpr size_t kNumRenderChannels = 1;
	constexpr size_t kNumCaptureChannels = 1;

	const size_t wrong_num_bands = NumBandsForRate(sample_rate_hz) < 3
	? NumBandsForRate(sample_rate_hz) + 1
	: 1;
	std::unique_ptr<BlockProcessor> block_processor(
	BlockProcessor::Create(EchoCanceller3Config(), sample_rate_hz,
	kNumRenderChannels, kNumCaptureChannels));
	Block block(wrong_num_bands, kNumRenderChannels);

	EXPECT_DEATH(block_processor->ProcessCapture(false, false, nullptr, &block),
	"");
	}
	#endif

	std::string ProduceDebugText(int sample_rate_hz) {
	rtc::StringBuilder ss;
	ss << "Sample rate: " << sample_rate_hz;
	return ss.Release();
	}

	void FillSampleVector(int call_counter,
	int delay,
	rtc::ArrayView<float> samples) {
	for (size_t i = 0; i < samples.size(); ++i) {
	samples[i] = (call_counter - delay) * 10000.0f + i;
	}
	}

	} // namespace

	// Verifies that the delay controller functionality is properly integrated with
	// the render delay buffer inside block processor.
	// TODO(peah): Activate the unittest once the required code has been landed.
	TEST(BlockProcessor, DISABLED_DelayControllerIntegration) {
	constexpr size_t kNumRenderChannels = 1;
	constexpr size_t kNumCaptureChannels = 1;
	constexpr size_t kNumBlocks = 310;
	constexpr size_t kDelayInSamples = 640;
	constexpr size_t kDelayHeadroom = 1;
	constexpr size_t kDelayInBlocks =
	kDelayInSamples / kBlockSize - kDelayHeadroom;
	Random random_generator(42U);
	for (auto rate : {16000, 32000, 48000}) {
	SCOPED_TRACE(ProduceDebugText(rate));
	std::unique_ptr<testing::StrictMock<webrtc::test::MockRenderDelayBuffer>>
	render_delay_buffer_mock(
	new StrictMock<webrtc::test::MockRenderDelayBuffer>(rate, 1));
	EXPECT_CALL(*render_delay_buffer_mock, Insert(_))
	.Times(kNumBlocks)
	.WillRepeatedly(Return(RenderDelayBuffer::BufferingEvent::kNone));
	EXPECT_CALL(*render_delay_buffer_mock, AlignFromDelay(kDelayInBlocks))
	.Times(AtLeast(1));
	EXPECT_CALL(*render_delay_buffer_mock, MaxDelay()).WillOnce(Return(30));
	EXPECT_CALL(*render_delay_buffer_mock, Delay())
	.Times(kNumBlocks + 1)
	.WillRepeatedly(Return(0));
	std::unique_ptr<BlockProcessor> block_processor(BlockProcessor::Create(
	EchoCanceller3Config(), rate, kNumRenderChannels, kNumCaptureChannels,
	std::move(render_delay_buffer_mock)));

	Block render_block(NumBandsForRate(rate), kNumRenderChannels);
	Block capture_block(NumBandsForRate(rate), kNumCaptureChannels);
	DelayBuffer<float> signal_delay_buffer(kDelayInSamples);
	for (size_t k = 0; k < kNumBlocks; ++k) {
	RandomizeSampleVector(&random_generator,
	render_block.View(/band=/0, /capture=/0));
	signal_delay_buffer.Delay(render_block.View(/band=/0, /capture=/0),
	capture_block.View(/band=/0, /capture=/0));
	block_processor->BufferRender(render_block);
	block_processor->ProcessCapture(false, false, nullptr, &capture_block);
	}
	}
	}

	// Verifies that BlockProcessor submodules are called in a proper manner.
	TEST(BlockProcessor, DISABLED_SubmoduleIntegration) {
	constexpr size_t kNumBlocks = 310;
	constexpr size_t kNumRenderChannels = 1;
	constexpr size_t kNumCaptureChannels = 1;

	Random random_generator(42U);
	for (auto rate : {16000, 32000, 48000}) {
	SCOPED_TRACE(ProduceDebugText(rate));
	std::unique_ptr<testing::StrictMock<webrtc::test::MockRenderDelayBuffer>>
	render_delay_buffer_mock(
	new StrictMock<webrtc::test::MockRenderDelayBuffer>(rate, 1));
	std::unique_ptr<
	::testing::StrictMock<webrtc::test::MockRenderDelayController>>
	render_delay_controller_mock(
	new StrictMock<webrtc::test::MockRenderDelayController>());
	std::unique_ptr<testing::StrictMock<webrtc::test::MockEchoRemover>>
	echo_remover_mock(new StrictMock<webrtc::test::MockEchoRemover>());

	EXPECT_CALL(*render_delay_buffer_mock, Insert(_))
	.Times(kNumBlocks - 1)
	.WillRepeatedly(Return(RenderDelayBuffer::BufferingEvent::kNone));
	EXPECT_CALL(*render_delay_buffer_mock, PrepareCaptureProcessing())
	.Times(kNumBlocks);
	EXPECT_CALL(*render_delay_buffer_mock, AlignFromDelay(9)).Times(AtLeast(1));
	EXPECT_CALL(*render_delay_buffer_mock, Delay())
	.Times(kNumBlocks)
	.WillRepeatedly(Return(0));
	EXPECT_CALL(*render_delay_controller_mock, GetDelay(_, _, _))
	.Times(kNumBlocks);
	EXPECT_CALL(*echo_remover_mock, ProcessCapture(_, _, _, _, _, _))
	.Times(kNumBlocks);
	EXPECT_CALL(*echo_remover_mock, UpdateEchoLeakageStatus(_))
	.Times(kNumBlocks);

	std::unique_ptr<BlockProcessor> block_processor(BlockProcessor::Create(
	EchoCanceller3Config(), rate, kNumRenderChannels, kNumCaptureChannels,
	std::move(render_delay_buffer_mock),
	std::move(render_delay_controller_mock), std::move(echo_remover_mock)));

	Block render_block(NumBandsForRate(rate), kNumRenderChannels);
	Block capture_block(NumBandsForRate(rate), kNumCaptureChannels);
	DelayBuffer<float> signal_delay_buffer(640);
	for (size_t k = 0; k < kNumBlocks; ++k) {
	RandomizeSampleVector(&random_generator,
	render_block.View(/band=/0, /capture=/0));
	signal_delay_buffer.Delay(render_block.View(/band=/0, /capture=/0),
	capture_block.View(/band=/0, /capture=/0));
	block_processor->BufferRender(render_block);
	block_processor->ProcessCapture(false, false, nullptr, &capture_block);
	block_processor->UpdateEchoLeakageStatus(false);
	}
	}
	}

	TEST(BlockProcessor, BasicSetupAndApiCalls) {
	for (auto rate : {16000, 32000, 48000}) {
	SCOPED_TRACE(ProduceDebugText(rate));
	RunBasicSetupAndApiCallTest(rate, 1);
	}
	}

	TEST(BlockProcessor, TestLongerCall) {
	RunBasicSetupAndApiCallTest(16000, 20 * kNumBlocksPerSecond);
	}

	#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
	// TODO(gustaf): Re-enable the test once the issue with memory leaks during
	// DEATH tests on test bots has been fixed.
	TEST(BlockProcessorDeathTest, DISABLED_VerifyRenderBlockSizeCheck) {
	for (auto rate : {16000, 32000, 48000}) {
	SCOPED_TRACE(ProduceDebugText(rate));
	RunRenderBlockSizeVerificationTest(rate);
	}
	}

	TEST(BlockProcessorDeathTest, VerifyRenderNumBandsCheck) {
	for (auto rate : {16000, 32000, 48000}) {
	SCOPED_TRACE(ProduceDebugText(rate));
	RunRenderNumBandsVerificationTest(rate);
	}
	}

	// TODO(peah): Verify the check for correct number of bands in the capture
	// signal.
	TEST(BlockProcessorDeathTest, VerifyCaptureNumBandsCheck) {
	for (auto rate : {16000, 32000, 48000}) {
	SCOPED_TRACE(ProduceDebugText(rate));
	RunCaptureNumBandsVerificationTest(rate);
	}
	}

	// Verifiers that the verification for null ProcessCapture input works.
	TEST(BlockProcessorDeathTest, NullProcessCaptureParameter) {
	EXPECT_DEATH(std::unique_ptr<BlockProcessor>(
	BlockProcessor::Create(EchoCanceller3Config(), 16000, 1, 1))
	->ProcessCapture(false, false, nullptr, nullptr),
	"");
	}

	// Verifies the check for correct sample rate.
	// TODO(peah): Re-enable the test once the issue with memory leaks during DEATH
	// tests on test bots has been fixed.
	TEST(BlockProcessor, DISABLED_WrongSampleRate) {
	EXPECT_DEATH(std::unique_ptr<BlockProcessor>(
	BlockProcessor::Create(EchoCanceller3Config(), 8001, 1, 1)),
	"");
	}

	#endif

	// Verifies that external delay estimator delays are applied correctly when a
	// call begins with a sequence of capture blocks.
	TEST(BlockProcessor, ExternalDelayAppliedCorrectlyWithInitialCaptureCalls) {
	constexpr int kNumRenderChannels = 1;
	constexpr int kNumCaptureChannels = 1;
	constexpr int kSampleRateHz = 16000;

	EchoCanceller3Config config;
	config.delay.use_external_delay_estimator = true;

	std::unique_ptr<RenderDelayBuffer> delay_buffer(
	RenderDelayBuffer::Create(config, kSampleRateHz, kNumRenderChannels));

	std::unique_ptr<testing::NiceMock<webrtc::test::MockEchoRemover>>
	echo_remover_mock(new NiceMock<webrtc::test::MockEchoRemover>());
	webrtc::test::MockEchoRemover* echo_remover_mock_pointer =
	echo_remover_mock.get();

	std::unique_ptr<BlockProcessor> block_processor(BlockProcessor::Create(
	config, kSampleRateHz, kNumRenderChannels, kNumCaptureChannels,
	std::move(delay_buffer), /delay_controller=/nullptr,
	std::move(echo_remover_mock)));

	Block render_block(NumBandsForRate(kSampleRateHz), kNumRenderChannels);
	Block capture_block(NumBandsForRate(kSampleRateHz), kNumCaptureChannels);

	// Process...
	// - 10 capture calls, where no render data is available,
	// - 10 render calls, populating the buffer,
	// - 2 capture calls, verifying that the delay was applied correctly.
	constexpr int kDelayInBlocks = 5;
	constexpr int kDelayInMs = 20;
	block_processor->SetAudioBufferDelay(kDelayInMs);

	int capture_call_counter = 0;
	int render_call_counter = 0;
	for (size_t k = 0; k < 10; ++k) {
	FillSampleVector(++capture_call_counter, kDelayInBlocks,
	capture_block.View(/band=/0, /capture=/0));
	block_processor->ProcessCapture(false, false, nullptr, &capture_block);
	}
	for (size_t k = 0; k < 10; ++k) {
	FillSampleVector(++render_call_counter, 0,
	render_block.View(/band=/0, /capture=/0));
	block_processor->BufferRender(render_block);
	}

	EXPECT_CALL(*echo_remover_mock_pointer, ProcessCapture)
	.WillRepeatedly(
	[](EchoPathVariability /echo_path_variability/,
	bool /capture_signal_saturation/,
	const absl::optional<DelayEstimate>& /external_delay/,
	RenderBuffer* render_buffer, Block* /linear_output/,
	Block* capture) {
	const auto& render = render_buffer->GetBlock(0);
	const auto render_view = render.View(/band=/0, /channel=/0);
	const auto capture_view = capture->View(/band=/0, /channel=/0);
	for (size_t i = 0; i < kBlockSize; ++i) {
	EXPECT_FLOAT_EQ(render_view[i], capture_view[i]);
	}
	});

	FillSampleVector(++capture_call_counter, kDelayInBlocks,
	capture_block.View(/band=/0, /capture=/0));
	block_processor->ProcessCapture(false, false, nullptr, &capture_block);

	FillSampleVector(++capture_call_counter, kDelayInBlocks,
	capture_block.View(/band=/0, /capture=/0));
	block_processor->ProcessCapture(false, false, nullptr, &capture_block);
	}

	} // namespace webrtc