media_stream_audio_test.cc | Explore in Territory

// Copyright 2016 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 <stdint.h>

#include "base/synchronization/lock.h"
#include "base/synchronization/waitable_event.h"
#include "base/test/task_environment.h"
#include "base/test/test_timeouts.h"
#include "base/threading/platform_thread.h"
#include "base/threading/thread_checker.h"
#include "base/time/time.h"
#include "media/base/audio_bus.h"
#include "media/base/audio_glitch_info.h"
#include "media/base/audio_parameters.h"
#include "media/base/audio_timestamp_helper.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/platform/modules/mediastream/web_media_stream_audio_sink.h"
#include "third_party/blink/public/platform/scheduler/test/renderer_scheduler_test_support.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/web/web_heap.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_audio_deliverer.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_audio_source.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_audio_track.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_component_impl.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_source.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_track_platform.h"

namespace blink {

namespace {

constexpr int kSampleRate = …;
constexpr int kBufferSize = …;

// The maximum integer that can be exactly represented by the float data type.
constexpr int kMaxValueSafelyConvertableToFloat = …;

// A simple MediaStreamAudioSource that spawns a real-time audio thread and
// emits audio samples with monotonically-increasing sample values. Includes
// hooks for the unit tests to confirm lifecycle status and to change audio
// format.
class FakeMediaStreamAudioSource final : public MediaStreamAudioSource,
                                         public base::PlatformThread::Delegate { … };

// A simple WebMediaStreamAudioSink that consumes audio and confirms the
// sample values. Includes hooks for the unit tests to monitor the format and
// flow of audio, whether the audio is silent, and the propagation of the
// "enabled" state.
class FakeMediaStreamAudioSink final : public WebMediaStreamAudioSink { … };

}  // namespace

class MediaStreamAudioTest : public ::testing::Test { … };

// Tests that a simple source-->track-->sink connection and audio data flow
// works.
TEST_F(MediaStreamAudioTest, BasicUsage) { … }

// Tests that "ended" tracks can be connected after the source has stopped.
TEST_F(MediaStreamAudioTest, ConnectTrackAfterSourceStopped) { … }

// Tests that a sink is immediately "ended" when connected to a stopped track.
TEST_F(MediaStreamAudioTest, AddSinkToStoppedTrack) { … }

// Tests that audio format changes at the source propagate to the track and
// sink.
TEST_F(MediaStreamAudioTest, FormatChangesPropagate) { … }

// Tests that tracks deliver audio when enabled and silent audio when
// disabled. Whenever a track is enabled or disabled, the sink's
// OnEnabledChanged() method should be called.
TEST_F(MediaStreamAudioTest, EnableAndDisableTracks) { … }

TEST(MediaStreamAudioTestStandalone, GetAudioFrameStats) { … }

}  // namespace blink
chromium/third_party/blink/renderer/platform/mediastream/media_stream_audio_test.cc
