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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/residual_echo_estimator.h"
#include "api/audio/echo_canceller3_config.h"
#include "modules/audio_processing/aec3/aec3_fft.h"
#include "modules/audio_processing/aec3/aec_state.h"
#include "modules/audio_processing/aec3/render_delay_buffer.h"
#include "modules/audio_processing/test/echo_canceller_test_tools.h"
#include "rtc_base/random.h"
#include "rtc_base/strings/string_builder.h"
#include "test/gtest.h"
namespace webrtc {
class ResidualEchoEstimatorMultiChannel
: public ::testing::Test,
public ::testing::WithParamInterface<std::tuple<size_t, size_t>> {};
INSTANTIATE_TEST_SUITE_P(MultiChannel,
ResidualEchoEstimatorMultiChannel,
::testing::Combine(::testing::Values(1, 2, 4),
::testing::Values(1, 2, 4)));
TEST_P(ResidualEchoEstimatorMultiChannel, BasicTest) {
const size_t num_render_channels = std::get<0>(GetParam());
const size_t num_capture_channels = std::get<1>(GetParam());
constexpr int kSampleRateHz = 48000;
constexpr size_t kNumBands = NumBandsForRate(kSampleRateHz);
EchoCanceller3Config config;
ResidualEchoEstimator estimator(config, num_render_channels);
AecState aec_state(config, num_capture_channels);
std::unique_ptr<RenderDelayBuffer> render_delay_buffer(
RenderDelayBuffer::Create(config, kSampleRateHz, num_render_channels));
std::vector<std::array<float, kFftLengthBy2Plus1>> E2_refined(
num_capture_channels);
std::vector<std::array<float, kFftLengthBy2Plus1>> S2_linear(
num_capture_channels);
std::vector<std::array<float, kFftLengthBy2Plus1>> Y2(num_capture_channels);
std::vector<std::array<float, kFftLengthBy2Plus1>> R2(num_capture_channels);
std::vector<std::vector<std::vector<float>>> x(
kNumBands, std::vector<std::vector<float>>(
num_render_channels, std::vector<float>(kBlockSize, 0.f)));
std::vector<std::vector<std::array<float, kFftLengthBy2Plus1>>> H2(
num_capture_channels,
std::vector<std::array<float, kFftLengthBy2Plus1>>(10));
Random random_generator(42U);
std::vector<SubtractorOutput> output(num_capture_channels);
std::array<float, kBlockSize> y;
absl::optional<DelayEstimate> delay_estimate;
for (auto& H2_ch : H2) {
for (auto& H2_k : H2_ch) {
H2_k.fill(0.01f);
}
H2_ch[2].fill(10.f);
H2_ch[2][0] = 0.1f;
}
std::vector<std::vector<float>> h(
num_capture_channels,
std::vector<float>(
GetTimeDomainLength(config.filter.refined.length_blocks), 0.f));
for (auto& subtractor_output : output) {
subtractor_output.Reset();
subtractor_output.s_refined.fill(100.f);
}
y.fill(0.f);
constexpr float kLevel = 10.f;
for (auto& E2_refined_ch : E2_refined) {
E2_refined_ch.fill(kLevel);
}
S2_linear[0].fill(kLevel);
for (auto& Y2_ch : Y2) {
Y2_ch.fill(kLevel);
}
for (int k = 0; k < 1993; ++k) {
RandomizeSampleVector(&random_generator, x[0][0]);
render_delay_buffer->Insert(x);
if (k == 0) {
render_delay_buffer->Reset();
}
render_delay_buffer->PrepareCaptureProcessing();
aec_state.Update(delay_estimate, H2, h,
*render_delay_buffer->GetRenderBuffer(), E2_refined, Y2,
output);
estimator.Estimate(aec_state, *render_delay_buffer->GetRenderBuffer(),
S2_linear, Y2, /*dominant_nearend=*/false, R2);
}
}
} // namespace webrtc
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