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/*
* 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 <vector>
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/base/array_view.h"
#include "webrtc/modules/audio_processing/audio_buffer.h"
#include "webrtc/modules/audio_processing/echo_cancellation_impl.h"
#include "webrtc/modules/audio_processing/test/audio_buffer_tools.h"
#include "webrtc/modules/audio_processing/test/bitexactness_tools.h"
namespace webrtc {
namespace {
const int kNumFramesToProcess = 100;
void SetupComponent(int sample_rate_hz,
EchoCancellation::SuppressionLevel suppression_level,
bool drift_compensation_enabled,
EchoCancellationImpl* echo_canceller) {
echo_canceller->Initialize(sample_rate_hz, 1, 1, 1);
EchoCancellation* ec = static_cast<EchoCancellation*>(echo_canceller);
ec->Enable(true);
ec->set_suppression_level(suppression_level);
ec->enable_drift_compensation(drift_compensation_enabled);
Config config;
config.Set<DelayAgnostic>(new DelayAgnostic(true));
config.Set<ExtendedFilter>(new ExtendedFilter(true));
echo_canceller->SetExtraOptions(config);
}
void ProcessOneFrame(int sample_rate_hz,
int stream_delay_ms,
bool drift_compensation_enabled,
int stream_drift_samples,
AudioBuffer* render_audio_buffer,
AudioBuffer* capture_audio_buffer,
EchoCancellationImpl* echo_canceller) {
if (sample_rate_hz > AudioProcessing::kSampleRate16kHz) {
render_audio_buffer->SplitIntoFrequencyBands();
capture_audio_buffer->SplitIntoFrequencyBands();
}
echo_canceller->ProcessRenderAudio(render_audio_buffer);
if (drift_compensation_enabled) {
static_cast<EchoCancellation*>(echo_canceller)
->set_stream_drift_samples(stream_drift_samples);
}
echo_canceller->ProcessCaptureAudio(capture_audio_buffer, stream_delay_ms);
if (sample_rate_hz > AudioProcessing::kSampleRate16kHz) {
capture_audio_buffer->MergeFrequencyBands();
}
}
void RunBitexactnessTest(int sample_rate_hz,
size_t num_channels,
int stream_delay_ms,
bool drift_compensation_enabled,
int stream_drift_samples,
EchoCancellation::SuppressionLevel suppression_level,
bool stream_has_echo_reference,
const rtc::ArrayView<const float>& output_reference) {
rtc::CriticalSection crit_render;
rtc::CriticalSection crit_capture;
EchoCancellationImpl echo_canceller(&crit_render, &crit_capture);
SetupComponent(sample_rate_hz, suppression_level, drift_compensation_enabled,
&echo_canceller);
const int samples_per_channel = rtc::CheckedDivExact(sample_rate_hz, 100);
const StreamConfig render_config(sample_rate_hz, num_channels, false);
AudioBuffer render_buffer(
render_config.num_frames(), render_config.num_channels(),
render_config.num_frames(), 1, render_config.num_frames());
test::InputAudioFile render_file(
test::GetApmRenderTestVectorFileName(sample_rate_hz));
std::vector<float> render_input(samples_per_channel * num_channels);
const StreamConfig capture_config(sample_rate_hz, num_channels, false);
AudioBuffer capture_buffer(
capture_config.num_frames(), capture_config.num_channels(),
capture_config.num_frames(), 1, capture_config.num_frames());
test::InputAudioFile capture_file(
test::GetApmCaptureTestVectorFileName(sample_rate_hz));
std::vector<float> capture_input(samples_per_channel * num_channels);
for (int frame_no = 0; frame_no < kNumFramesToProcess; ++frame_no) {
ReadFloatSamplesFromStereoFile(samples_per_channel, num_channels,
&render_file, render_input);
ReadFloatSamplesFromStereoFile(samples_per_channel, num_channels,
&capture_file, capture_input);
test::CopyVectorToAudioBuffer(render_config, render_input, &render_buffer);
test::CopyVectorToAudioBuffer(capture_config, capture_input,
&capture_buffer);
ProcessOneFrame(sample_rate_hz, stream_delay_ms, drift_compensation_enabled,
stream_drift_samples, &render_buffer, &capture_buffer,
&echo_canceller);
}
// Extract and verify the test results.
std::vector<float> capture_output;
test::ExtractVectorFromAudioBuffer(capture_config, &capture_buffer,
&capture_output);
EXPECT_EQ(stream_has_echo_reference,
static_cast<EchoCancellation*>(&echo_canceller)->stream_has_echo());
// Compare the output with the reference. Only the first values of the output
// from last frame processed are compared in order not having to specify all
// preceeding frames as testvectors. As the algorithm being tested has a
// memory, testing only the last frame implicitly also tests the preceeding
// frames.
const float kElementErrorBound = 1.0f / 32768.0f;
EXPECT_TRUE(test::VerifyDeinterleavedArray(
capture_config.num_frames(), capture_config.num_channels(),
output_reference, capture_output, kElementErrorBound));
}
const bool kStreamHasEchoReference = false;
} // namespace
// TODO(peah): Activate all these tests for ARM and ARM64 once the issue on the
// Chromium ARM and ARM64 boths have been identified. This is tracked in the
// issue https://bugs.chromium.org/p/webrtc/issues/detail?id=5711.
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono8kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono8kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.006622f, -0.002747f, 0.001587f};
RunBitexactnessTest(8000, 1, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono16kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono16kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.006561f, -0.004608f, -0.002899f};
RunBitexactnessTest(16000, 1, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono32kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono32kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.010162f, -0.009155f, -0.008301f};
RunBitexactnessTest(32000, 1, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono48kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono48kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.009554f, -0.009857f, -0.009868f};
RunBitexactnessTest(48000, 1, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono16kHz_LowLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono16kHz_LowLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.006561f, -0.004608f, -0.002899f};
RunBitexactnessTest(16000, 1, 0, false, 0,
EchoCancellation::SuppressionLevel::kLowSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono16kHz_ModerateLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono16kHz_ModerateLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.006561f, -0.004608f, -0.002899f};
RunBitexactnessTest(16000, 1, 0, false, 0,
EchoCancellation::SuppressionLevel::kModerateSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono16kHz_HighLevel_NoDrift_StreamDelay10) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono16kHz_HighLevel_NoDrift_StreamDelay10) {
#endif
const float kOutputReference[] = {-0.006561f, -0.004608f, -0.002899f};
RunBitexactnessTest(16000, 1, 10, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono16kHz_HighLevel_NoDrift_StreamDelay20) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono16kHz_HighLevel_NoDrift_StreamDelay20) {
#endif
const float kOutputReference[] = {-0.006561f, -0.004608f, -0.002899f};
RunBitexactnessTest(16000, 1, 20, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono16kHz_HighLevel_Drift0_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono16kHz_HighLevel_Drift0_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.006561f, -0.004608f, -0.002899f};
RunBitexactnessTest(16000, 1, 0, true, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Mono16kHz_HighLevel_Drift5_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Mono16kHz_HighLevel_Drift5_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.006561f, -0.004608f, -0.002899f};
RunBitexactnessTest(16000, 1, 0, true, 5,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Stereo8kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Stereo8kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.027359f, -0.015823f, -0.028488f,
-0.027359f, -0.015823f, -0.028488f};
RunBitexactnessTest(8000, 2, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Stereo16kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Stereo16kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.027298f, -0.015900f, -0.028107f,
-0.027298f, -0.015900f, -0.028107f};
RunBitexactnessTest(16000, 2, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Stereo32kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Stereo32kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {0.004547f, -0.004456f, -0.000946f,
0.004547f, -0.004456f, -0.000946f};
RunBitexactnessTest(32000, 2, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
#if !(defined(WEBRTC_ARCH_ARM64) || defined(WEBRTC_ARCH_ARM) || \
defined(WEBRTC_ANDROID))
TEST(EchoCancellationBitExactnessTest,
Stereo48kHz_HighLevel_NoDrift_StreamDelay0) {
#else
TEST(EchoCancellationBitExactnessTest,
DISABLED_Stereo48kHz_HighLevel_NoDrift_StreamDelay0) {
#endif
const float kOutputReference[] = {-0.003500f, -0.001894f, -0.003176f,
-0.003500f, -0.001894f, -0.003176f};
RunBitexactnessTest(48000, 2, 0, false, 0,
EchoCancellation::SuppressionLevel::kHighSuppression,
kStreamHasEchoReference, kOutputReference);
}
} // namespace webrtc