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6a05bb1b12
This CL adds code for doing signal-dependent downmixing before the delay estimation in the multichannel case. As part of the CL, the unittests of the render delay controller are corrected. However, as that caused some of them to fail, the CL (for now) as well disables the failing test. Bug: webrtc:11153,chromium:1029740, webrtc:11161 Change-Id: I0b765c28fa5e547aabd6dfbd24b626ff9a16346f Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/161045 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29980}
135 lines
4.4 KiB
C++
135 lines
4.4 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_processing/aec3/decimator.h"
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#include <math.h>
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#include <algorithm>
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#include <array>
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#include <cmath>
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#include <cstring>
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#include <numeric>
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#include <string>
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#include <vector>
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "rtc_base/strings/string_builder.h"
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#include "test/gtest.h"
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namespace webrtc {
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namespace {
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std::string ProduceDebugText(int sample_rate_hz) {
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rtc::StringBuilder ss;
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ss << "Sample rate: " << sample_rate_hz;
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return ss.Release();
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}
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constexpr size_t kDownSamplingFactors[] = {2, 4, 8};
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constexpr float kPi = 3.141592f;
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constexpr size_t kNumStartupBlocks = 50;
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constexpr size_t kNumBlocks = 1000;
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void ProduceDecimatedSinusoidalOutputPower(int sample_rate_hz,
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size_t down_sampling_factor,
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float sinusoidal_frequency_hz,
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float* input_power,
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float* output_power) {
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float input[kBlockSize * kNumBlocks];
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const size_t sub_block_size = kBlockSize / down_sampling_factor;
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// Produce a sinusoid of the specified frequency.
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for (size_t k = 0; k < kBlockSize * kNumBlocks; ++k) {
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input[k] = 32767.f * std::sin(2.f * kPi * sinusoidal_frequency_hz * k /
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sample_rate_hz);
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}
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Decimator decimator(down_sampling_factor);
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std::vector<float> output(sub_block_size * kNumBlocks);
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for (size_t k = 0; k < kNumBlocks; ++k) {
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std::vector<float> sub_block(sub_block_size);
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decimator.Decimate(
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rtc::ArrayView<const float>(&input[k * kBlockSize], kBlockSize),
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sub_block);
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std::copy(sub_block.begin(), sub_block.end(),
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output.begin() + k * sub_block_size);
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}
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ASSERT_GT(kNumBlocks, kNumStartupBlocks);
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rtc::ArrayView<const float> input_to_evaluate(
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&input[kNumStartupBlocks * kBlockSize],
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(kNumBlocks - kNumStartupBlocks) * kBlockSize);
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rtc::ArrayView<const float> output_to_evaluate(
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&output[kNumStartupBlocks * sub_block_size],
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(kNumBlocks - kNumStartupBlocks) * sub_block_size);
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*input_power =
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std::inner_product(input_to_evaluate.begin(), input_to_evaluate.end(),
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input_to_evaluate.begin(), 0.f) /
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input_to_evaluate.size();
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*output_power =
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std::inner_product(output_to_evaluate.begin(), output_to_evaluate.end(),
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output_to_evaluate.begin(), 0.f) /
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output_to_evaluate.size();
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}
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} // namespace
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// Verifies that there is little aliasing from upper frequencies in the
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// downsampling.
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TEST(Decimator, NoLeakageFromUpperFrequencies) {
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float input_power;
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float output_power;
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for (auto rate : {16000, 32000, 48000}) {
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for (auto down_sampling_factor : kDownSamplingFactors) {
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ProduceDebugText(rate);
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ProduceDecimatedSinusoidalOutputPower(rate, down_sampling_factor,
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3.f / 8.f * rate, &input_power,
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&output_power);
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EXPECT_GT(0.0001f * input_power, output_power);
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}
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}
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}
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#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
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// Verifies the check for the input size.
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TEST(Decimator, WrongInputSize) {
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Decimator decimator(4);
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std::vector<float> x(kBlockSize - 1, 0.f);
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std::array<float, kBlockSize / 4> x_downsampled;
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EXPECT_DEATH(decimator.Decimate(x, x_downsampled), "");
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}
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// Verifies the check for non-null output parameter.
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TEST(Decimator, NullOutput) {
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Decimator decimator(4);
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std::vector<float> x(kBlockSize, 0.f);
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EXPECT_DEATH(decimator.Decimate(x, nullptr), "");
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}
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// Verifies the check for the output size.
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TEST(Decimator, WrongOutputSize) {
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Decimator decimator(4);
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std::vector<float> x(kBlockSize, 0.f);
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std::array<float, kBlockSize / 4 - 1> x_downsampled;
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EXPECT_DEATH(decimator.Decimate(x, x_downsampled), "");
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}
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// Verifies the check for the correct downsampling factor.
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TEST(Decimator, CorrectDownSamplingFactor) {
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EXPECT_DEATH(Decimator(3), "");
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}
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#endif
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} // namespace webrtc
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