67 lines
2.6 KiB
C++
67 lines
2.6 KiB
C++
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/*
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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_coding/neteq/statistics_calculator.h"
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#include "test/gtest.h"
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namespace webrtc {
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TEST(LifetimeStatistics, TotalSamplesReceived) {
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StatisticsCalculator stats;
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for (int i = 0; i < 10; ++i) {
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stats.IncreaseCounter(480, 48000); // 10 ms at 48 kHz.
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}
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EXPECT_EQ(10 * 480u, stats.GetLifetimeStatistics().total_samples_received);
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}
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TEST(LifetimeStatistics, SamplesConcealed) {
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StatisticsCalculator stats;
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stats.ExpandedVoiceSamples(100, false);
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stats.ExpandedNoiseSamples(17, false);
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EXPECT_EQ(100u + 17u, stats.GetLifetimeStatistics().concealed_samples);
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}
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// This test verifies that a negative correction of concealed_samples does not
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// result in a decrease in the stats value (because stats-consuming applications
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// would not expect the value to decrease). Instead, the correction should be
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// made to future increments to the stat.
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TEST(LifetimeStatistics, SamplesConcealedCorrection) {
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StatisticsCalculator stats;
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stats.ExpandedVoiceSamples(100, false);
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EXPECT_EQ(100u, stats.GetLifetimeStatistics().concealed_samples);
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stats.ExpandedVoiceSamplesCorrection(-10);
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// Do not subtract directly, but keep the correction for later.
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EXPECT_EQ(100u, stats.GetLifetimeStatistics().concealed_samples);
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stats.ExpandedVoiceSamplesCorrection(20);
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// The total correction is 20 - 10.
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EXPECT_EQ(110u, stats.GetLifetimeStatistics().concealed_samples);
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// Also test correction done to the next ExpandedVoiceSamples call.
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stats.ExpandedVoiceSamplesCorrection(-17);
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EXPECT_EQ(110u, stats.GetLifetimeStatistics().concealed_samples);
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stats.ExpandedVoiceSamples(100, false);
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EXPECT_EQ(110u + 100u - 17u, stats.GetLifetimeStatistics().concealed_samples);
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}
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// This test verifies that neither "accelerate" nor "pre-emptive expand" reults
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// in a modification to concealed_samples stats. Only PLC operations (i.e.,
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// "expand" and "merge") should affect the stat.
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TEST(LifetimeStatistics, NoUpdateOnTimeStretch) {
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StatisticsCalculator stats;
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stats.ExpandedVoiceSamples(100, false);
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stats.AcceleratedSamples(4711);
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stats.PreemptiveExpandedSamples(17);
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stats.ExpandedVoiceSamples(100, false);
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EXPECT_EQ(200u, stats.GetLifetimeStatistics().concealed_samples);
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}
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} // namespace webrtc
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