chromium/third_party/blink/renderer/modules/media/audio/audio_renderer_mixer_test.cc

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/modules/media/audio/audio_renderer_mixer.h"

#include <stddef.h>

#include <algorithm>
#include <limits>
#include <memory>
#include <tuple>
#include <vector>

#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/raw_ptr.h"
#include "base/synchronization/waitable_event.h"
#include "base/test/task_environment.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "media/base/fake_audio_render_callback.h"
#include "media/base/mock_audio_renderer_sink.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/modules/media/audio/audio_renderer_mixer_input.h"
#include "third_party/blink/renderer/modules/media/audio/audio_renderer_mixer_pool.h"

namespace blink {

// Parameters which control the many input case tests.
constexpr int kMixerInputs = …;
constexpr int kOddMixerInputs = …;
constexpr int kMixerCycles = …;

// Parameters used for testing.
constexpr media::ChannelLayout kChannelLayout = …;
constexpr int kHighLatencyBufferSize = …;
constexpr int kLowLatencyBufferSize = …;

// Number of full sine wave cycles for each Render() call.
constexpr int kSineCycles = …;

// Input sample frequencies for testing.
constexpr int kTestInputLower = …;
constexpr int kTestInputHigher = …;
constexpr int kTestInput3Rates[] = …;

// Tuple of <input sampling rates, number of input sample rates,
// output sampling rate, epsilon>.
AudioRendererMixerTestData;

class AudioRendererMixerTest
    : public testing::TestWithParam<AudioRendererMixerTestData>,
      public AudioRendererMixerPool { … };

class AudioRendererMixerBehavioralTest : public AudioRendererMixerTest { … };

ACTION_P(SignalEvent, event) { … }

// Verify a mixer with no inputs returns silence for all requested frames.
TEST_P(AudioRendererMixerTest, NoInputs) { … }

// Test mixer output with one input in the pre-Start() and post-Start() state.
TEST_P(AudioRendererMixerTest, OneInputStart) { … }

// Test mixer output with many inputs in the pre-Start() and post-Start() state.
TEST_P(AudioRendererMixerTest, ManyInputStart) { … }

// Test mixer output with one input in the post-Play() state.
TEST_P(AudioRendererMixerTest, OneInputPlay) { … }

// Test mixer output with many inputs in the post-Play() state.
TEST_P(AudioRendererMixerTest, ManyInputPlay) { … }

// Test volume adjusted mixer output with one input in the post-Play() state.
TEST_P(AudioRendererMixerTest, OneInputPlayVolumeAdjusted) { … }

// Test volume adjusted mixer output with many inputs in the post-Play() state.
TEST_P(AudioRendererMixerTest, ManyInputPlayVolumeAdjusted) { … }

// Test mixer output with one input and partial Render() in post-Play() state.
TEST_P(AudioRendererMixerTest, OneInputPlayPartialRender) { … }

// Test mixer output with many inputs and partial Render() in post-Play() state.
TEST_P(AudioRendererMixerTest, ManyInputPlayPartialRender) { … }

// Test mixer output with one input in the post-Pause() state.
TEST_P(AudioRendererMixerTest, OneInputPause) { … }

// Test mixer output with many inputs in the post-Pause() state.
TEST_P(AudioRendererMixerTest, ManyInputPause) { … }

// Test mixer output with one input in the post-Stop() state.
TEST_P(AudioRendererMixerTest, OneInputStop) { … }

// Test mixer output with many inputs in the post-Stop() state.
TEST_P(AudioRendererMixerTest, ManyInputStop) { … }

// Test mixer with many inputs in mixed post-Stop() and post-Play() states.
TEST_P(AudioRendererMixerTest, ManyInputMixedStopPlay) { … }

// Test mixer with many inputs in mixed post-Stop() and post-Play() states.
TEST_P(AudioRendererMixerTest, ManyInputMixedStopPlayOdd) { … }

// Check that AudioGlitchInfo is propagated.
TEST_P(AudioRendererMixerTest, PropagatesAudioGlitchInfo) { … }

TEST_P(AudioRendererMixerBehavioralTest, OnRenderError) { … }

TEST_P(AudioRendererMixerBehavioralTest, OnRenderErrorPausedInput) { … }

// Ensure the physical stream is paused after a certain amount of time with no
// inputs playing.  The test will hang if the behavior is incorrect.
TEST_P(AudioRendererMixerBehavioralTest, MixerPausesStream) { … }

INSTANTIATE_TEST_SUITE_P(…);

// Test cases for behavior which is independent of parameters.  Values() doesn't
// support single item lists and we don't want these test cases to run for every
// parameter set.
INSTANTIATE_TEST_SUITE_P(…);
}  // namespace blink