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/*
* 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 "modules/audio_processing/aec3/matched_filter_lag_aggregator.h"
#include <sstream>
#include <string>
#include <vector>
#include "api/array_view.h"
#include "api/audio/echo_canceller3_config.h"
#include "modules/audio_processing/aec3/aec3_common.h"
#include "modules/audio_processing/logging/apm_data_dumper.h"
#include "test/gtest.h"
namespace webrtc {
namespace {
constexpr size_t kNumLagsBeforeDetection = 26;
} // namespace
// Verifies that varying lag estimates causes lag estimates to not be deemed
// reliable.
TEST(MatchedFilterLagAggregator,
LagEstimateInvarianceRequiredForAggregatedLag) {
ApmDataDumper data_dumper(0);
EchoCanceller3Config config;
MatchedFilterLagAggregator aggregator(&data_dumper, /*max_filter_lag=*/100,
config.delay);
absl::optional<DelayEstimate> aggregated_lag;
for (size_t k = 0; k < kNumLagsBeforeDetection; ++k) {
aggregated_lag = aggregator.Aggregate(
MatchedFilter::LagEstimate(/*lag=*/10, /*pre_echo_lag=*/10));
}
EXPECT_TRUE(aggregated_lag);
for (size_t k = 0; k < kNumLagsBeforeDetection * 100; ++k) {
aggregated_lag = aggregator.Aggregate(
MatchedFilter::LagEstimate(/*lag=*/k % 100, /*pre_echo_lag=*/k % 100));
}
EXPECT_FALSE(aggregated_lag);
for (size_t k = 0; k < kNumLagsBeforeDetection * 100; ++k) {
aggregated_lag = aggregator.Aggregate(
MatchedFilter::LagEstimate(/*lag=*/k % 100, /*pre_echo_lag=*/k % 100));
EXPECT_FALSE(aggregated_lag);
}
}
// Verifies that lag estimate updates are required to produce an updated lag
// aggregate.
TEST(MatchedFilterLagAggregator,
DISABLED_LagEstimateUpdatesRequiredForAggregatedLag) {
constexpr size_t kLag = 5;
ApmDataDumper data_dumper(0);
EchoCanceller3Config config;
MatchedFilterLagAggregator aggregator(&data_dumper, /*max_filter_lag=*/kLag,
config.delay);
for (size_t k = 0; k < kNumLagsBeforeDetection * 10; ++k) {
absl::optional<DelayEstimate> aggregated_lag = aggregator.Aggregate(
MatchedFilter::LagEstimate(/*lag=*/kLag, /*pre_echo_lag=*/kLag));
EXPECT_FALSE(aggregated_lag);
EXPECT_EQ(kLag, aggregated_lag->delay);
}
}
// Verifies that an aggregated lag is persistent if the lag estimates do not
// change and that an aggregated lag is not produced without gaining lag
// estimate confidence.
TEST(MatchedFilterLagAggregator, DISABLED_PersistentAggregatedLag) {
constexpr size_t kLag1 = 5;
constexpr size_t kLag2 = 10;
ApmDataDumper data_dumper(0);
EchoCanceller3Config config;
std::vector<MatchedFilter::LagEstimate> lag_estimates(1);
MatchedFilterLagAggregator aggregator(&data_dumper, std::max(kLag1, kLag2),
config.delay);
absl::optional<DelayEstimate> aggregated_lag;
for (size_t k = 0; k < kNumLagsBeforeDetection; ++k) {
aggregated_lag = aggregator.Aggregate(
MatchedFilter::LagEstimate(/*lag=*/kLag1, /*pre_echo_lag=*/kLag1));
}
EXPECT_TRUE(aggregated_lag);
EXPECT_EQ(kLag1, aggregated_lag->delay);
for (size_t k = 0; k < kNumLagsBeforeDetection * 40; ++k) {
aggregated_lag = aggregator.Aggregate(
MatchedFilter::LagEstimate(/*lag=*/kLag2, /*pre_echo_lag=*/kLag2));
EXPECT_TRUE(aggregated_lag);
EXPECT_EQ(kLag1, aggregated_lag->delay);
}
}
#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
// Verifies the check for non-null data dumper.
TEST(MatchedFilterLagAggregatorDeathTest, NullDataDumper) {
EchoCanceller3Config config;
EXPECT_DEATH(MatchedFilterLagAggregator(nullptr, 10, config.delay), "");
}
#endif
} // namespace webrtc
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