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/*
* Copyright (c) 2012 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/utility/delay_estimator.h"
#include "modules/audio_processing/utility/delay_estimator_internal.h"
#include "modules/audio_processing/utility/delay_estimator_wrapper.h"
#include "test/gtest.h"
namespace {
enum { kSpectrumSize = 65 };
// Delay history sizes.
enum { kMaxDelay = 100 };
enum { kLookahead = 10 };
enum { kHistorySize = kMaxDelay + kLookahead };
// Length of binary spectrum sequence.
enum { kSequenceLength = 400 };
const int kDifferentHistorySize = 3;
const int kDifferentLookahead = 1;
const int kEnable[] = {0, 1};
const size_t kSizeEnable = sizeof(kEnable) / sizeof(*kEnable);
class DelayEstimatorTest : public ::testing::Test {
protected:
DelayEstimatorTest();
void SetUp() override;
void TearDown() override;
void Init();
void InitBinary();
void VerifyDelay(BinaryDelayEstimator* binary_handle, int offset, int delay);
void RunBinarySpectra(BinaryDelayEstimator* binary1,
BinaryDelayEstimator* binary2,
int near_offset,
int lookahead_offset,
int far_offset);
void RunBinarySpectraTest(int near_offset,
int lookahead_offset,
int ref_robust_validation,
int robust_validation);
void* handle_;
DelayEstimator* self_;
void* farend_handle_;
DelayEstimatorFarend* farend_self_;
BinaryDelayEstimator* binary_;
BinaryDelayEstimatorFarend* binary_farend_;
int spectrum_size_;
// Dummy input spectra.
float far_f_[kSpectrumSize];
float near_f_[kSpectrumSize];
uint16_t far_u16_[kSpectrumSize];
uint16_t near_u16_[kSpectrumSize];
uint32_t binary_spectrum_[kSequenceLength + kHistorySize];
};
DelayEstimatorTest::DelayEstimatorTest()
: handle_(NULL),
self_(NULL),
farend_handle_(NULL),
farend_self_(NULL),
binary_(NULL),
binary_farend_(NULL),
spectrum_size_(kSpectrumSize) {
// Dummy input data are set with more or less arbitrary non-zero values.
memset(far_f_, 1, sizeof(far_f_));
memset(near_f_, 2, sizeof(near_f_));
memset(far_u16_, 1, sizeof(far_u16_));
memset(near_u16_, 2, sizeof(near_u16_));
// Construct a sequence of binary spectra used to verify delay estimate. The
// |kSequenceLength| has to be long enough for the delay estimation to leave
// the initialized state.
binary_spectrum_[0] = 1;
for (int i = 1; i < (kSequenceLength + kHistorySize); i++) {
binary_spectrum_[i] = 3 * binary_spectrum_[i - 1];
}
}
void DelayEstimatorTest::SetUp() {
farend_handle_ =
WebRtc_CreateDelayEstimatorFarend(kSpectrumSize, kHistorySize);
ASSERT_TRUE(farend_handle_ != NULL);
farend_self_ = reinterpret_cast<DelayEstimatorFarend*>(farend_handle_);
handle_ = WebRtc_CreateDelayEstimator(farend_handle_, kLookahead);
ASSERT_TRUE(handle_ != NULL);
self_ = reinterpret_cast<DelayEstimator*>(handle_);
binary_farend_ = WebRtc_CreateBinaryDelayEstimatorFarend(kHistorySize);
ASSERT_TRUE(binary_farend_ != NULL);
binary_ = WebRtc_CreateBinaryDelayEstimator(binary_farend_, kLookahead);
ASSERT_TRUE(binary_ != NULL);
}
void DelayEstimatorTest::TearDown() {
WebRtc_FreeDelayEstimator(handle_);
handle_ = NULL;
self_ = NULL;
WebRtc_FreeDelayEstimatorFarend(farend_handle_);
farend_handle_ = NULL;
farend_self_ = NULL;
WebRtc_FreeBinaryDelayEstimator(binary_);
binary_ = NULL;
WebRtc_FreeBinaryDelayEstimatorFarend(binary_farend_);
binary_farend_ = NULL;
}
void DelayEstimatorTest::Init() {
// Initialize Delay Estimator
EXPECT_EQ(0, WebRtc_InitDelayEstimatorFarend(farend_handle_));
EXPECT_EQ(0, WebRtc_InitDelayEstimator(handle_));
// Verify initialization.
EXPECT_EQ(0, farend_self_->far_spectrum_initialized);
EXPECT_EQ(0, self_->near_spectrum_initialized);
EXPECT_EQ(-2, WebRtc_last_delay(handle_)); // Delay in initial state.
EXPECT_FLOAT_EQ(0, WebRtc_last_delay_quality(handle_)); // Zero quality.
}
void DelayEstimatorTest::InitBinary() {
// Initialize Binary Delay Estimator (far-end part).
WebRtc_InitBinaryDelayEstimatorFarend(binary_farend_);
// Initialize Binary Delay Estimator
WebRtc_InitBinaryDelayEstimator(binary_);
// Verify initialization. This does not guarantee a complete check, since
// |last_delay| may be equal to -2 before initialization if done on the fly.
EXPECT_EQ(-2, binary_->last_delay);
}
void DelayEstimatorTest::VerifyDelay(BinaryDelayEstimator* binary_handle,
int offset,
int delay) {
// Verify that we WebRtc_binary_last_delay() returns correct delay.
EXPECT_EQ(delay, WebRtc_binary_last_delay(binary_handle));
if (delay != -2) {
// Verify correct delay estimate. In the non-causal case the true delay
// is equivalent with the |offset|.
EXPECT_EQ(offset, delay);
}
}
void DelayEstimatorTest::RunBinarySpectra(BinaryDelayEstimator* binary1,
BinaryDelayEstimator* binary2,
int near_offset,
int lookahead_offset,
int far_offset) {
int different_validations =
binary1->robust_validation_enabled ^ binary2->robust_validation_enabled;
WebRtc_InitBinaryDelayEstimatorFarend(binary_farend_);
WebRtc_InitBinaryDelayEstimator(binary1);
WebRtc_InitBinaryDelayEstimator(binary2);
// Verify initialization. This does not guarantee a complete check, since
// |last_delay| may be equal to -2 before initialization if done on the fly.
EXPECT_EQ(-2, binary1->last_delay);
EXPECT_EQ(-2, binary2->last_delay);
for (int i = kLookahead; i < (kSequenceLength + kLookahead); i++) {
WebRtc_AddBinaryFarSpectrum(binary_farend_,
binary_spectrum_[i + far_offset]);
int delay_1 = WebRtc_ProcessBinarySpectrum(binary1, binary_spectrum_[i]);
int delay_2 = WebRtc_ProcessBinarySpectrum(
binary2, binary_spectrum_[i - near_offset]);
VerifyDelay(binary1, far_offset + kLookahead, delay_1);
VerifyDelay(binary2,
far_offset + kLookahead + lookahead_offset + near_offset,
delay_2);
// Expect the two delay estimates to be offset by |lookahead_offset| +
// |near_offset| when we have left the initial state.
if ((delay_1 != -2) && (delay_2 != -2)) {
EXPECT_EQ(delay_1, delay_2 - lookahead_offset - near_offset);
}
// For the case of identical signals |delay_1| and |delay_2| should match
// all the time, unless one of them has robust validation turned on. In
// that case the robust validation leaves the initial state faster.
if ((near_offset == 0) && (lookahead_offset == 0)) {
if (!different_validations) {
EXPECT_EQ(delay_1, delay_2);
} else {
if (binary1->robust_validation_enabled) {
EXPECT_GE(delay_1, delay_2);
} else {
EXPECT_GE(delay_2, delay_1);
}
}
}
}
// Verify that we have left the initialized state.
EXPECT_NE(-2, WebRtc_binary_last_delay(binary1));
EXPECT_LT(0, WebRtc_binary_last_delay_quality(binary1));
EXPECT_NE(-2, WebRtc_binary_last_delay(binary2));
EXPECT_LT(0, WebRtc_binary_last_delay_quality(binary2));
}
void DelayEstimatorTest::RunBinarySpectraTest(int near_offset,
int lookahead_offset,
int ref_robust_validation,
int robust_validation) {
BinaryDelayEstimator* binary2 = WebRtc_CreateBinaryDelayEstimator(
binary_farend_, kLookahead + lookahead_offset);
// Verify the delay for both causal and non-causal systems. For causal systems
// the delay is equivalent with a positive |offset| of the far-end sequence.
// For non-causal systems the delay is equivalent with a negative |offset| of
// the far-end sequence.
binary_->robust_validation_enabled = ref_robust_validation;
binary2->robust_validation_enabled = robust_validation;
for (int offset = -kLookahead;
offset < kMaxDelay - lookahead_offset - near_offset; offset++) {
RunBinarySpectra(binary_, binary2, near_offset, lookahead_offset, offset);
}
WebRtc_FreeBinaryDelayEstimator(binary2);
binary2 = NULL;
binary_->robust_validation_enabled = 0; // Reset reference.
}
TEST_F(DelayEstimatorTest, CorrectErrorReturnsOfWrapper) {
// In this test we verify correct error returns on invalid API calls.
// WebRtc_CreateDelayEstimatorFarend() and WebRtc_CreateDelayEstimator()
// should return a NULL pointer on invalid input values.
// Make sure we have a non-NULL value at start, so we can detect NULL after
// create failure.
void* handle = farend_handle_;
handle = WebRtc_CreateDelayEstimatorFarend(33, kHistorySize);
EXPECT_TRUE(handle == NULL);
handle = WebRtc_CreateDelayEstimatorFarend(kSpectrumSize, 1);
EXPECT_TRUE(handle == NULL);
handle = handle_;
handle = WebRtc_CreateDelayEstimator(NULL, kLookahead);
EXPECT_TRUE(handle == NULL);
handle = WebRtc_CreateDelayEstimator(farend_handle_, -1);
EXPECT_TRUE(handle == NULL);
// WebRtc_InitDelayEstimatorFarend() and WebRtc_InitDelayEstimator() should
// return -1 if we have a NULL pointer as |handle|.
EXPECT_EQ(-1, WebRtc_InitDelayEstimatorFarend(NULL));
EXPECT_EQ(-1, WebRtc_InitDelayEstimator(NULL));
// WebRtc_AddFarSpectrumFloat() should return -1 if we have:
// 1) NULL pointer as |handle|.
// 2) NULL pointer as far-end spectrum.
// 3) Incorrect spectrum size.
EXPECT_EQ(-1, WebRtc_AddFarSpectrumFloat(NULL, far_f_, spectrum_size_));
// Use |farend_handle_| which is properly created at SetUp().
EXPECT_EQ(-1,
WebRtc_AddFarSpectrumFloat(farend_handle_, NULL, spectrum_size_));
EXPECT_EQ(-1, WebRtc_AddFarSpectrumFloat(farend_handle_, far_f_,
spectrum_size_ + 1));
// WebRtc_AddFarSpectrumFix() should return -1 if we have:
// 1) NULL pointer as |handle|.
// 2) NULL pointer as far-end spectrum.
// 3) Incorrect spectrum size.
// 4) Too high precision in far-end spectrum (Q-domain > 15).
EXPECT_EQ(-1, WebRtc_AddFarSpectrumFix(NULL, far_u16_, spectrum_size_, 0));
EXPECT_EQ(-1,
WebRtc_AddFarSpectrumFix(farend_handle_, NULL, spectrum_size_, 0));
EXPECT_EQ(-1, WebRtc_AddFarSpectrumFix(farend_handle_, far_u16_,
spectrum_size_ + 1, 0));
EXPECT_EQ(-1, WebRtc_AddFarSpectrumFix(farend_handle_, far_u16_,
spectrum_size_, 16));
// WebRtc_set_history_size() should return -1 if:
// 1) |handle| is a NULL.
// 2) |history_size| <= 1.
EXPECT_EQ(-1, WebRtc_set_history_size(NULL, 1));
EXPECT_EQ(-1, WebRtc_set_history_size(handle_, 1));
// WebRtc_history_size() should return -1 if:
// 1) NULL pointer input.
EXPECT_EQ(-1, WebRtc_history_size(NULL));
// 2) there is a mismatch between history size.
void* tmp_handle = WebRtc_CreateDelayEstimator(farend_handle_, kHistorySize);
EXPECT_EQ(0, WebRtc_InitDelayEstimator(tmp_handle));
EXPECT_EQ(kDifferentHistorySize,
WebRtc_set_history_size(tmp_handle, kDifferentHistorySize));
EXPECT_EQ(kDifferentHistorySize, WebRtc_history_size(tmp_handle));
EXPECT_EQ(kHistorySize, WebRtc_set_history_size(handle_, kHistorySize));
EXPECT_EQ(-1, WebRtc_history_size(tmp_handle));
// WebRtc_set_lookahead() should return -1 if we try a value outside the
/// buffer.
EXPECT_EQ(-1, WebRtc_set_lookahead(handle_, kLookahead + 1));
EXPECT_EQ(-1, WebRtc_set_lookahead(handle_, -1));
// WebRtc_set_allowed_offset() should return -1 if we have:
// 1) NULL pointer as |handle|.
// 2) |allowed_offset| < 0.
EXPECT_EQ(-1, WebRtc_set_allowed_offset(NULL, 0));
EXPECT_EQ(-1, WebRtc_set_allowed_offset(handle_, -1));
EXPECT_EQ(-1, WebRtc_get_allowed_offset(NULL));
// WebRtc_enable_robust_validation() should return -1 if we have:
// 1) NULL pointer as |handle|.
// 2) Incorrect |enable| value (not 0 or 1).
EXPECT_EQ(-1, WebRtc_enable_robust_validation(NULL, kEnable[0]));
EXPECT_EQ(-1, WebRtc_enable_robust_validation(handle_, -1));
EXPECT_EQ(-1, WebRtc_enable_robust_validation(handle_, 2));
// WebRtc_is_robust_validation_enabled() should return -1 if we have NULL
// pointer as |handle|.
EXPECT_EQ(-1, WebRtc_is_robust_validation_enabled(NULL));
// WebRtc_DelayEstimatorProcessFloat() should return -1 if we have:
// 1) NULL pointer as |handle|.
// 2) NULL pointer as near-end spectrum.
// 3) Incorrect spectrum size.
// 4) Non matching history sizes if multiple delay estimators using the same
// far-end reference.
EXPECT_EQ(-1,
WebRtc_DelayEstimatorProcessFloat(NULL, near_f_, spectrum_size_));
// Use |handle_| which is properly created at SetUp().
EXPECT_EQ(-1,
WebRtc_DelayEstimatorProcessFloat(handle_, NULL, spectrum_size_));
EXPECT_EQ(-1, WebRtc_DelayEstimatorProcessFloat(handle_, near_f_,
spectrum_size_ + 1));
// |tmp_handle| is already in a non-matching state.
EXPECT_EQ(-1, WebRtc_DelayEstimatorProcessFloat(tmp_handle, near_f_,
spectrum_size_));
// WebRtc_DelayEstimatorProcessFix() should return -1 if we have:
// 1) NULL pointer as |handle|.
// 2) NULL pointer as near-end spectrum.
// 3) Incorrect spectrum size.
// 4) Too high precision in near-end spectrum (Q-domain > 15).
// 5) Non matching history sizes if multiple delay estimators using the same
// far-end reference.
EXPECT_EQ(
-1, WebRtc_DelayEstimatorProcessFix(NULL, near_u16_, spectrum_size_, 0));
EXPECT_EQ(-1,
WebRtc_DelayEstimatorProcessFix(handle_, NULL, spectrum_size_, 0));
EXPECT_EQ(-1, WebRtc_DelayEstimatorProcessFix(handle_, near_u16_,
spectrum_size_ + 1, 0));
EXPECT_EQ(-1, WebRtc_DelayEstimatorProcessFix(handle_, near_u16_,
spectrum_size_, 16));
// |tmp_handle| is already in a non-matching state.
EXPECT_EQ(-1, WebRtc_DelayEstimatorProcessFix(tmp_handle, near_u16_,
spectrum_size_, 0));
WebRtc_FreeDelayEstimator(tmp_handle);
// WebRtc_last_delay() should return -1 if we have a NULL pointer as |handle|.
EXPECT_EQ(-1, WebRtc_last_delay(NULL));
// Free any local memory if needed.
WebRtc_FreeDelayEstimator(handle);
}
TEST_F(DelayEstimatorTest, VerifyAllowedOffset) {
// Is set to zero by default.
EXPECT_EQ(0, WebRtc_get_allowed_offset(handle_));
for (int i = 1; i >= 0; i--) {
EXPECT_EQ(0, WebRtc_set_allowed_offset(handle_, i));
EXPECT_EQ(i, WebRtc_get_allowed_offset(handle_));
Init();
// Unaffected over a reset.
EXPECT_EQ(i, WebRtc_get_allowed_offset(handle_));
}
}
TEST_F(DelayEstimatorTest, VerifyEnableRobustValidation) {
// Disabled by default.
EXPECT_EQ(0, WebRtc_is_robust_validation_enabled(handle_));
for (size_t i = 0; i < kSizeEnable; ++i) {
EXPECT_EQ(0, WebRtc_enable_robust_validation(handle_, kEnable[i]));
EXPECT_EQ(kEnable[i], WebRtc_is_robust_validation_enabled(handle_));
Init();
// Unaffected over a reset.
EXPECT_EQ(kEnable[i], WebRtc_is_robust_validation_enabled(handle_));
}
}
TEST_F(DelayEstimatorTest, InitializedSpectrumAfterProcess) {
// In this test we verify that the mean spectra are initialized after first
// time we call WebRtc_AddFarSpectrum() and Process() respectively. The test
// also verifies the state is not left for zero spectra.
const float kZerosFloat[kSpectrumSize] = {0.0};
const uint16_t kZerosU16[kSpectrumSize] = {0};
// For floating point operations, process one frame and verify initialization
// flag.
Init();
EXPECT_EQ(0, WebRtc_AddFarSpectrumFloat(farend_handle_, kZerosFloat,
spectrum_size_));
EXPECT_EQ(0, farend_self_->far_spectrum_initialized);
EXPECT_EQ(0,
WebRtc_AddFarSpectrumFloat(farend_handle_, far_f_, spectrum_size_));
EXPECT_EQ(1, farend_self_->far_spectrum_initialized);
EXPECT_EQ(-2, WebRtc_DelayEstimatorProcessFloat(handle_, kZerosFloat,
spectrum_size_));
EXPECT_EQ(0, self_->near_spectrum_initialized);
EXPECT_EQ(
-2, WebRtc_DelayEstimatorProcessFloat(handle_, near_f_, spectrum_size_));
EXPECT_EQ(1, self_->near_spectrum_initialized);
// For fixed point operations, process one frame and verify initialization
// flag.
Init();
EXPECT_EQ(0, WebRtc_AddFarSpectrumFix(farend_handle_, kZerosU16,
spectrum_size_, 0));
EXPECT_EQ(0, farend_self_->far_spectrum_initialized);
EXPECT_EQ(
0, WebRtc_AddFarSpectrumFix(farend_handle_, far_u16_, spectrum_size_, 0));
EXPECT_EQ(1, farend_self_->far_spectrum_initialized);
EXPECT_EQ(-2, WebRtc_DelayEstimatorProcessFix(handle_, kZerosU16,
spectrum_size_, 0));
EXPECT_EQ(0, self_->near_spectrum_initialized);
EXPECT_EQ(-2, WebRtc_DelayEstimatorProcessFix(handle_, near_u16_,
spectrum_size_, 0));
EXPECT_EQ(1, self_->near_spectrum_initialized);
}
TEST_F(DelayEstimatorTest, CorrectLastDelay) {
// In this test we verify that we get the correct last delay upon valid call.
// We simply process the same data until we leave the initialized state
// (|last_delay| = -2). Then we compare the Process() output with the
// last_delay() call.
// TODO(bjornv): Update quality values for robust validation.
int last_delay = 0;
// Floating point operations.
Init();
for (int i = 0; i < 200; i++) {
EXPECT_EQ(
0, WebRtc_AddFarSpectrumFloat(farend_handle_, far_f_, spectrum_size_));
last_delay =
WebRtc_DelayEstimatorProcessFloat(handle_, near_f_, spectrum_size_);
if (last_delay != -2) {
EXPECT_EQ(last_delay, WebRtc_last_delay(handle_));
if (!WebRtc_is_robust_validation_enabled(handle_)) {
EXPECT_FLOAT_EQ(7203.f / kMaxBitCountsQ9,
WebRtc_last_delay_quality(handle_));
}
break;
}
}
// Verify that we have left the initialized state.
EXPECT_NE(-2, WebRtc_last_delay(handle_));
EXPECT_LT(0, WebRtc_last_delay_quality(handle_));
// Fixed point operations.
Init();
for (int i = 0; i < 200; i++) {
EXPECT_EQ(0, WebRtc_AddFarSpectrumFix(farend_handle_, far_u16_,
spectrum_size_, 0));
last_delay =
WebRtc_DelayEstimatorProcessFix(handle_, near_u16_, spectrum_size_, 0);
if (last_delay != -2) {
EXPECT_EQ(last_delay, WebRtc_last_delay(handle_));
if (!WebRtc_is_robust_validation_enabled(handle_)) {
EXPECT_FLOAT_EQ(7203.f / kMaxBitCountsQ9,
WebRtc_last_delay_quality(handle_));
}
break;
}
}
// Verify that we have left the initialized state.
EXPECT_NE(-2, WebRtc_last_delay(handle_));
EXPECT_LT(0, WebRtc_last_delay_quality(handle_));
}
TEST_F(DelayEstimatorTest, CorrectErrorReturnsOfBinaryEstimatorFarend) {
// In this test we verify correct output on invalid API calls to the Binary
// Delay Estimator (far-end part).
BinaryDelayEstimatorFarend* binary = binary_farend_;
// WebRtc_CreateBinaryDelayEstimatorFarend() should return -1 if the input
// history size is less than 2. This is to make sure the buffer shifting
// applies properly.
// Make sure we have a non-NULL value at start, so we can detect NULL after
// create failure.
binary = WebRtc_CreateBinaryDelayEstimatorFarend(1);
EXPECT_TRUE(binary == NULL);
}
TEST_F(DelayEstimatorTest, CorrectErrorReturnsOfBinaryEstimator) {
// In this test we verify correct output on invalid API calls to the Binary
// Delay Estimator.
BinaryDelayEstimator* binary_handle = binary_;
// WebRtc_CreateBinaryDelayEstimator() should return -1 if we have a NULL
// pointer as |binary_farend| or invalid input values. Upon failure, the
// |binary_handle| should be NULL.
// Make sure we have a non-NULL value at start, so we can detect NULL after
// create failure.
binary_handle = WebRtc_CreateBinaryDelayEstimator(NULL, kLookahead);
EXPECT_TRUE(binary_handle == NULL);
binary_handle = WebRtc_CreateBinaryDelayEstimator(binary_farend_, -1);
EXPECT_TRUE(binary_handle == NULL);
}
TEST_F(DelayEstimatorTest, MeanEstimatorFix) {
// In this test we verify that we update the mean value in correct direction
// only. With "direction" we mean increase or decrease.
int32_t mean_value = 4000;
int32_t mean_value_before = mean_value;
int32_t new_mean_value = mean_value * 2;
// Increasing |mean_value|.
WebRtc_MeanEstimatorFix(new_mean_value, 10, &mean_value);
EXPECT_LT(mean_value_before, mean_value);
EXPECT_GT(new_mean_value, mean_value);
// Decreasing |mean_value|.
new_mean_value = mean_value / 2;
mean_value_before = mean_value;
WebRtc_MeanEstimatorFix(new_mean_value, 10, &mean_value);
EXPECT_GT(mean_value_before, mean_value);
EXPECT_LT(new_mean_value, mean_value);
}
TEST_F(DelayEstimatorTest, ExactDelayEstimateMultipleNearSameSpectrum) {
// In this test we verify that we get the correct delay estimates if we shift
// the signal accordingly. We create two Binary Delay Estimators and feed them
// with the same signals, so they should output the same results.
// We verify both causal and non-causal delays.
// For these noise free signals, the robust validation should not have an
// impact, hence we turn robust validation on/off for both reference and
// delayed near end.
for (size_t i = 0; i < kSizeEnable; ++i) {
for (size_t j = 0; j < kSizeEnable; ++j) {
RunBinarySpectraTest(0, 0, kEnable[i], kEnable[j]);
}
}
}
TEST_F(DelayEstimatorTest, ExactDelayEstimateMultipleNearDifferentSpectrum) {
// In this test we use the same setup as above, but we now feed the two Binary
// Delay Estimators with different signals, so they should output different
// results.
// For these noise free signals, the robust validation should not have an
// impact, hence we turn robust validation on/off for both reference and
// delayed near end.
const int kNearOffset = 1;
for (size_t i = 0; i < kSizeEnable; ++i) {
for (size_t j = 0; j < kSizeEnable; ++j) {
RunBinarySpectraTest(kNearOffset, 0, kEnable[i], kEnable[j]);
}
}
}
TEST_F(DelayEstimatorTest, ExactDelayEstimateMultipleNearDifferentLookahead) {
// In this test we use the same setup as above, feeding the two Binary
// Delay Estimators with the same signals. The difference is that we create
// them with different lookahead.
// For these noise free signals, the robust validation should not have an
// impact, hence we turn robust validation on/off for both reference and
// delayed near end.
const int kLookaheadOffset = 1;
for (size_t i = 0; i < kSizeEnable; ++i) {
for (size_t j = 0; j < kSizeEnable; ++j) {
RunBinarySpectraTest(0, kLookaheadOffset, kEnable[i], kEnable[j]);
}
}
}
TEST_F(DelayEstimatorTest, AllowedOffsetNoImpactWhenRobustValidationDisabled) {
// The same setup as in ExactDelayEstimateMultipleNearSameSpectrum with the
// difference that |allowed_offset| is set for the reference binary delay
// estimator.
binary_->allowed_offset = 10;
RunBinarySpectraTest(0, 0, 0, 0);
binary_->allowed_offset = 0; // Reset reference.
}
TEST_F(DelayEstimatorTest, VerifyLookaheadAtCreate) {
void* farend_handle =
WebRtc_CreateDelayEstimatorFarend(kSpectrumSize, kMaxDelay);
ASSERT_TRUE(farend_handle != NULL);
void* handle = WebRtc_CreateDelayEstimator(farend_handle, kLookahead);
ASSERT_TRUE(handle != NULL);
EXPECT_EQ(kLookahead, WebRtc_lookahead(handle));
WebRtc_FreeDelayEstimator(handle);
WebRtc_FreeDelayEstimatorFarend(farend_handle);
}
TEST_F(DelayEstimatorTest, VerifyLookaheadIsSetAndKeptAfterInit) {
EXPECT_EQ(kLookahead, WebRtc_lookahead(handle_));
EXPECT_EQ(kDifferentLookahead,
WebRtc_set_lookahead(handle_, kDifferentLookahead));
EXPECT_EQ(kDifferentLookahead, WebRtc_lookahead(handle_));
EXPECT_EQ(0, WebRtc_InitDelayEstimatorFarend(farend_handle_));
EXPECT_EQ(kDifferentLookahead, WebRtc_lookahead(handle_));
EXPECT_EQ(0, WebRtc_InitDelayEstimator(handle_));
EXPECT_EQ(kDifferentLookahead, WebRtc_lookahead(handle_));
}
TEST_F(DelayEstimatorTest, VerifyHistorySizeAtCreate) {
EXPECT_EQ(kHistorySize, WebRtc_history_size(handle_));
}
TEST_F(DelayEstimatorTest, VerifyHistorySizeIsSetAndKeptAfterInit) {
EXPECT_EQ(kHistorySize, WebRtc_history_size(handle_));
EXPECT_EQ(kDifferentHistorySize,
WebRtc_set_history_size(handle_, kDifferentHistorySize));
EXPECT_EQ(kDifferentHistorySize, WebRtc_history_size(handle_));
EXPECT_EQ(0, WebRtc_InitDelayEstimator(handle_));
EXPECT_EQ(kDifferentHistorySize, WebRtc_history_size(handle_));
EXPECT_EQ(0, WebRtc_InitDelayEstimatorFarend(farend_handle_));
EXPECT_EQ(kDifferentHistorySize, WebRtc_history_size(handle_));
}
// TODO(bjornv): Add tests for SoftReset...(...).
} // namespace