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39f491eb4e
This CL moves the AEC3 API call skew estimator into a separate file. This has the advantage that it can more easily be tested. The CL also simplifies the code and adds unittests. Bug: webrtc:8671 Change-Id: I19bc31ca5666cdc87a1ed14770ef20ead1b5b80d Reviewed-on: https://webrtc-review.googlesource.com/55860 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22144}
124 lines
3.2 KiB
C++
124 lines
3.2 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/skew_estimator.h"
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#include "test/gtest.h"
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namespace webrtc {
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namespace aec3 {
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// Tests that the skew ends up as it should after a skew change.
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TEST(SkewEstimator, SkewChangeAdaptation) {
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constexpr int kNumSkewsLog2 = 7;
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constexpr int kNumSkews = 1 << kNumSkewsLog2;
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SkewEstimator estimator(kNumSkewsLog2);
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for (int k = 0; k < kNumSkews - 1; ++k) {
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estimator.LogRenderCall();
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auto skew = estimator.GetSkewFromCapture();
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EXPECT_FALSE(skew);
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}
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estimator.LogRenderCall();
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rtc::Optional<int> skew;
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for (int k = 0; k < kNumSkews; ++k) {
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estimator.LogRenderCall();
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skew = estimator.GetSkewFromCapture();
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EXPECT_TRUE(skew);
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}
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EXPECT_EQ(1, *skew);
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estimator.LogRenderCall();
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for (int k = 0; k < kNumSkews; ++k) {
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estimator.LogRenderCall();
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skew = estimator.GetSkewFromCapture();
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EXPECT_TRUE(skew);
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}
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EXPECT_EQ(2, *skew);
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}
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// Tests that the skew ends up as it should for a surplus of render calls.
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TEST(SkewEstimator, SkewForSurplusRender) {
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constexpr int kNumSkewsLog2 = 7;
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constexpr int kNumSkews = 1 << kNumSkewsLog2;
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SkewEstimator estimator(kNumSkewsLog2);
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for (int k = 0; k < kNumSkews - 1; ++k) {
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estimator.LogRenderCall();
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auto skew = estimator.GetSkewFromCapture();
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EXPECT_FALSE(skew);
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}
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estimator.LogRenderCall();
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rtc::Optional<int> skew;
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for (int k = 0; k < kNumSkews; ++k) {
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estimator.LogRenderCall();
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skew = estimator.GetSkewFromCapture();
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EXPECT_TRUE(skew);
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}
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EXPECT_EQ(1, *skew);
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}
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// Tests that the skew ends up as it should for a surplus of capture calls.
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TEST(SkewEstimator, SkewForSurplusCapture) {
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constexpr int kNumSkewsLog2 = 7;
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constexpr int kNumSkews = 1 << kNumSkewsLog2;
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SkewEstimator estimator(kNumSkewsLog2);
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for (int k = 0; k < kNumSkews - 1; ++k) {
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estimator.LogRenderCall();
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auto skew = estimator.GetSkewFromCapture();
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EXPECT_FALSE(skew);
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}
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rtc::Optional<int> skew;
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skew = estimator.GetSkewFromCapture();
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for (int k = 0; k < kNumSkews; ++k) {
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estimator.LogRenderCall();
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skew = estimator.GetSkewFromCapture();
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EXPECT_TRUE(skew);
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}
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EXPECT_EQ(-1, *skew);
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}
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// Tests that the skew estimator returns a null optional when it should.
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TEST(SkewEstimator, NullEstimate) {
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constexpr int kNumSkewsLog2 = 4;
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constexpr int kNumSkews = 1 << kNumSkewsLog2;
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SkewEstimator estimator(kNumSkewsLog2);
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for (int k = 0; k < kNumSkews - 1; ++k) {
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estimator.LogRenderCall();
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auto skew = estimator.GetSkewFromCapture();
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EXPECT_FALSE(skew);
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}
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estimator.LogRenderCall();
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auto skew = estimator.GetSkewFromCapture();
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EXPECT_TRUE(skew);
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estimator.Reset();
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for (int k = 0; k < kNumSkews - 1; ++k) {
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estimator.LogRenderCall();
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auto skew = estimator.GetSkewFromCapture();
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EXPECT_FALSE(skew);
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}
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}
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} // namespace aec3
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} // namespace webrtc
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