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|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <string>
#include "base/message_loop.h"
#include "base/message_loop_proxy.h"
#include "media/audio/audio_output_dispatcher_impl.h"
#include "media/audio/audio_output_proxy.h"
#include "media/audio/audio_output_resampler.h"
#include "media/audio/audio_manager.h"
#include "media/audio/audio_manager_base.h"
#include "media/audio/fake_audio_output_stream.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::_;
using ::testing::AllOf;
using ::testing::DoAll;
using ::testing::Field;
using ::testing::Mock;
using ::testing::NotNull;
using ::testing::Return;
using ::testing::SetArrayArgument;
using media::AudioBus;
using media::AudioBuffersState;
using media::AudioInputStream;
using media::AudioManager;
using media::AudioManagerBase;
using media::AudioOutputDispatcher;
using media::AudioOutputProxy;
using media::AudioOutputStream;
using media::AudioParameters;
using media::FakeAudioOutputStream;
namespace {
static const int kTestCloseDelayMs = 100;
// Used in the test where we don't want a stream to be closed unexpectedly.
static const int kTestBigCloseDelaySeconds = 1000;
// Delay between callbacks to AudioSourceCallback::OnMoreData.
static const int kOnMoreDataCallbackDelayMs = 10;
// Let start run long enough for many OnMoreData callbacks to occur.
static const int kStartRunTimeMs = kOnMoreDataCallbackDelayMs * 10;
class MockAudioOutputStream : public AudioOutputStream {
public:
MockAudioOutputStream(AudioManagerBase* manager,
const AudioParameters& params)
: start_called_(false),
stop_called_(false),
params_(params),
fake_output_stream_(
FakeAudioOutputStream::MakeFakeStream(manager, params_)) {
}
void Start(AudioSourceCallback* callback) {
start_called_ = true;
fake_output_stream_->Start(callback);
}
void Stop() {
stop_called_ = true;
fake_output_stream_->Stop();
}
~MockAudioOutputStream() {}
bool start_called() { return start_called_; }
bool stop_called() { return stop_called_; }
MOCK_METHOD0(Open, bool());
MOCK_METHOD1(SetVolume, void(double volume));
MOCK_METHOD1(GetVolume, void(double* volume));
MOCK_METHOD0(Close, void());
private:
bool start_called_;
bool stop_called_;
AudioParameters params_;
scoped_ptr<AudioOutputStream> fake_output_stream_;
};
class MockAudioManager : public AudioManagerBase {
public:
MockAudioManager() {}
virtual ~MockAudioManager() {
Shutdown();
}
MOCK_METHOD0(HasAudioOutputDevices, bool());
MOCK_METHOD0(HasAudioInputDevices, bool());
MOCK_METHOD0(GetAudioInputDeviceModel, string16());
MOCK_METHOD2(MakeAudioOutputStream, AudioOutputStream*(
const AudioParameters& params, const std::string& input_device_id));
MOCK_METHOD2(MakeAudioOutputStreamProxy, AudioOutputStream*(
const AudioParameters& params, const std::string& input_device_id));
MOCK_METHOD2(MakeAudioInputStream, AudioInputStream*(
const AudioParameters& params, const std::string& device_id));
MOCK_METHOD0(ShowAudioInputSettings, void());
MOCK_METHOD0(GetMessageLoop, scoped_refptr<base::MessageLoopProxy>());
MOCK_METHOD1(GetAudioInputDeviceNames, void(
media::AudioDeviceNames* device_name));
MOCK_METHOD1(MakeLinearOutputStream, AudioOutputStream*(
const AudioParameters& params));
MOCK_METHOD2(MakeLowLatencyOutputStream, AudioOutputStream*(
const AudioParameters& params, const std::string& input_device_id));
MOCK_METHOD2(MakeLinearInputStream, AudioInputStream*(
const AudioParameters& params, const std::string& device_id));
MOCK_METHOD2(MakeLowLatencyInputStream, AudioInputStream*(
const AudioParameters& params, const std::string& device_id));
MOCK_METHOD1(GetPreferredOutputStreamParameters, AudioParameters(
const AudioParameters& params));
};
class MockAudioSourceCallback : public AudioOutputStream::AudioSourceCallback {
public:
int OnMoreData(AudioBus* audio_bus, AudioBuffersState buffers_state) {
audio_bus->Zero();
return audio_bus->frames();
}
int OnMoreIOData(AudioBus* source, AudioBus* dest,
AudioBuffersState buffers_state) {
return OnMoreData(dest, buffers_state);
}
MOCK_METHOD1(OnError, void(AudioOutputStream* stream));
};
} // namespace
namespace media {
class AudioOutputProxyTest : public testing::Test {
protected:
virtual void SetUp() {
EXPECT_CALL(manager_, GetMessageLoop())
.WillRepeatedly(Return(message_loop_.message_loop_proxy()));
InitDispatcher(base::TimeDelta::FromMilliseconds(kTestCloseDelayMs));
}
virtual void TearDown() {
// All paused proxies should have been closed at this point.
EXPECT_EQ(0u, dispatcher_impl_->paused_proxies_);
// This is necessary to free all proxy objects that have been
// closed by the test.
message_loop_.RunUntilIdle();
}
virtual void InitDispatcher(base::TimeDelta close_delay) {
// Use a low sample rate and large buffer size when testing otherwise the
// FakeAudioOutputStream will keep the message loop busy indefinitely; i.e.,
// RunUntilIdle() will never terminate.
params_ = AudioParameters(AudioParameters::AUDIO_PCM_LINEAR,
CHANNEL_LAYOUT_STEREO, 8000, 16, 2048);
dispatcher_impl_ = new AudioOutputDispatcherImpl(&manager(),
params_,
std::string(),
close_delay);
// Necessary to know how long the dispatcher will wait before posting
// StopStreamTask.
pause_delay_ = dispatcher_impl_->pause_delay_;
}
virtual void OnStart() {}
MockAudioManager& manager() {
return manager_;
}
// Wait for the close timer to fire.
void WaitForCloseTimer(const int timer_delay_ms) {
message_loop_.RunUntilIdle(); // OpenTask() may reset the timer.
base::PlatformThread::Sleep(
base::TimeDelta::FromMilliseconds(timer_delay_ms) * 2);
message_loop_.RunUntilIdle();
}
// Methods that do actual tests.
void OpenAndClose(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy->Open());
proxy->Close();
WaitForCloseTimer(kTestCloseDelayMs);
}
// Create a stream, and then calls Start() and Stop().
void StartAndStop(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream, SetVolume(_))
.Times(1);
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy->Open());
proxy->Start(&callback_);
OnStart();
proxy->Stop();
proxy->Close();
WaitForCloseTimer(kTestCloseDelayMs);
EXPECT_TRUE(stream.stop_called());
EXPECT_TRUE(stream.start_called());
}
// Verify that the stream is closed after Stop is called.
void CloseAfterStop(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream, SetVolume(_))
.Times(1);
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy->Open());
proxy->Start(&callback_);
OnStart();
proxy->Stop();
// Wait for StopStream() to post StopStreamTask().
base::PlatformThread::Sleep(pause_delay_ * 2);
WaitForCloseTimer(kTestCloseDelayMs);
// Verify expectation before calling Close().
Mock::VerifyAndClear(&stream);
proxy->Close();
EXPECT_TRUE(stream.stop_called());
EXPECT_TRUE(stream.start_called());
}
// Create two streams, but don't start them. Only one device must be open.
void TwoStreams(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy1 = new AudioOutputProxy(dispatcher);
AudioOutputProxy* proxy2 = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy1->Open());
EXPECT_TRUE(proxy2->Open());
proxy1->Close();
proxy2->Close();
WaitForCloseTimer(kTestCloseDelayMs);
EXPECT_FALSE(stream.stop_called());
EXPECT_FALSE(stream.start_called());
}
// Open() method failed.
void OpenFailed(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(false));
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
EXPECT_FALSE(proxy->Open());
proxy->Close();
WaitForCloseTimer(kTestCloseDelayMs);
EXPECT_FALSE(stream.stop_called());
EXPECT_FALSE(stream.start_called());
}
void CreateAndWait(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy->Open());
// Simulate a delay.
base::PlatformThread::Sleep(
base::TimeDelta::FromMilliseconds(kTestCloseDelayMs) * 2);
message_loop_.RunUntilIdle();
// Verify expectation before calling Close().
Mock::VerifyAndClear(&stream);
proxy->Close();
EXPECT_FALSE(stream.stop_called());
EXPECT_FALSE(stream.start_called());
}
void TwoStreams_OnePlaying(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream1(&manager_, params_);
MockAudioOutputStream stream2(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream1))
.WillOnce(Return(&stream2));
EXPECT_CALL(stream1, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream1, SetVolume(_))
.Times(1);
EXPECT_CALL(stream1, Close())
.Times(1);
EXPECT_CALL(stream2, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream2, Close())
.Times(1);
AudioOutputProxy* proxy1 = new AudioOutputProxy(dispatcher);
AudioOutputProxy* proxy2 = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy1->Open());
EXPECT_TRUE(proxy2->Open());
proxy1->Start(&callback_);
message_loop_.RunUntilIdle();
OnStart();
proxy1->Stop();
proxy1->Close();
proxy2->Close();
EXPECT_TRUE(stream1.stop_called());
EXPECT_TRUE(stream1.start_called());
EXPECT_FALSE(stream2.stop_called());
EXPECT_FALSE(stream2.start_called());
}
void TwoStreams_BothPlaying(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream1(&manager_, params_);
MockAudioOutputStream stream2(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream1))
.WillOnce(Return(&stream2));
EXPECT_CALL(stream1, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream1, SetVolume(_))
.Times(1);
EXPECT_CALL(stream1, Close())
.Times(1);
EXPECT_CALL(stream2, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream2, SetVolume(_))
.Times(1);
EXPECT_CALL(stream2, Close())
.Times(1);
AudioOutputProxy* proxy1 = new AudioOutputProxy(dispatcher);
AudioOutputProxy* proxy2 = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy1->Open());
EXPECT_TRUE(proxy2->Open());
proxy1->Start(&callback_);
proxy2->Start(&callback_);
OnStart();
proxy1->Stop();
proxy2->Stop();
proxy1->Close();
proxy2->Close();
EXPECT_TRUE(stream1.stop_called());
EXPECT_TRUE(stream1.start_called());
EXPECT_TRUE(stream2.stop_called());
EXPECT_TRUE(stream2.start_called());
}
void StartFailed(AudioOutputDispatcher* dispatcher) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher);
EXPECT_TRUE(proxy->Open());
// Simulate a delay.
base::PlatformThread::Sleep(
base::TimeDelta::FromMilliseconds(kTestCloseDelayMs) * 2);
message_loop_.RunUntilIdle();
// Verify expectation before calling Close().
Mock::VerifyAndClear(&stream);
// |stream| is closed at this point. Start() should reopen it again.
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.Times(2)
.WillRepeatedly(Return(reinterpret_cast<AudioOutputStream*>(NULL)));
EXPECT_CALL(callback_, OnError(_))
.Times(2);
proxy->Start(&callback_);
// Double Start() in the error case should be allowed since it's possible a
// callback may not have had time to process the OnError() in between.
proxy->Stop();
proxy->Start(&callback_);
Mock::VerifyAndClear(&callback_);
proxy->Close();
}
base::MessageLoop message_loop_;
scoped_refptr<AudioOutputDispatcherImpl> dispatcher_impl_;
base::TimeDelta pause_delay_;
MockAudioManager manager_;
MockAudioSourceCallback callback_;
AudioParameters params_;
};
class AudioOutputResamplerTest : public AudioOutputProxyTest {
public:
virtual void TearDown() {
AudioOutputProxyTest::TearDown();
}
virtual void InitDispatcher(base::TimeDelta close_delay) OVERRIDE {
AudioOutputProxyTest::InitDispatcher(close_delay);
// Use a low sample rate and large buffer size when testing otherwise the
// FakeAudioOutputStream will keep the message loop busy indefinitely; i.e.,
// RunUntilIdle() will never terminate.
resampler_params_ = AudioParameters(
AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_STEREO,
16000, 16, 1024);
resampler_ = new AudioOutputResampler(
&manager(), params_, resampler_params_, std::string(), close_delay);
}
virtual void OnStart() OVERRIDE {
// Let start run for a bit.
message_loop_.RunUntilIdle();
base::PlatformThread::Sleep(
base::TimeDelta::FromMilliseconds(kStartRunTimeMs));
}
protected:
AudioParameters resampler_params_;
scoped_refptr<AudioOutputResampler> resampler_;
};
TEST_F(AudioOutputProxyTest, CreateAndClose) {
AudioOutputProxy* proxy = new AudioOutputProxy(dispatcher_impl_.get());
proxy->Close();
}
TEST_F(AudioOutputResamplerTest, CreateAndClose) {
AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
proxy->Close();
}
TEST_F(AudioOutputProxyTest, OpenAndClose) {
OpenAndClose(dispatcher_impl_.get());
}
TEST_F(AudioOutputResamplerTest, OpenAndClose) {
OpenAndClose(resampler_.get());
}
// Create a stream, and verify that it is closed after kTestCloseDelayMs.
// if it doesn't start playing.
TEST_F(AudioOutputProxyTest, CreateAndWait) {
CreateAndWait(dispatcher_impl_.get());
}
// Create a stream, and verify that it is closed after kTestCloseDelayMs.
// if it doesn't start playing.
TEST_F(AudioOutputResamplerTest, CreateAndWait) {
CreateAndWait(resampler_.get());
}
TEST_F(AudioOutputProxyTest, StartAndStop) {
StartAndStop(dispatcher_impl_.get());
}
TEST_F(AudioOutputResamplerTest, StartAndStop) {
StartAndStop(resampler_.get());
}
TEST_F(AudioOutputProxyTest, CloseAfterStop) {
CloseAfterStop(dispatcher_impl_.get());
}
TEST_F(AudioOutputResamplerTest, CloseAfterStop) {
CloseAfterStop(resampler_.get());
}
TEST_F(AudioOutputProxyTest, TwoStreams) { TwoStreams(dispatcher_impl_.get()); }
TEST_F(AudioOutputResamplerTest, TwoStreams) { TwoStreams(resampler_.get()); }
// Two streams: verify that second stream is allocated when the first
// starts playing.
TEST_F(AudioOutputProxyTest, TwoStreams_OnePlaying) {
InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
TwoStreams_OnePlaying(dispatcher_impl_.get());
}
TEST_F(AudioOutputResamplerTest, TwoStreams_OnePlaying) {
InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
TwoStreams_OnePlaying(resampler_.get());
}
// Two streams, both are playing. Dispatcher should not open a third stream.
TEST_F(AudioOutputProxyTest, TwoStreams_BothPlaying) {
InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
TwoStreams_BothPlaying(dispatcher_impl_.get());
}
TEST_F(AudioOutputResamplerTest, TwoStreams_BothPlaying) {
InitDispatcher(base::TimeDelta::FromSeconds(kTestBigCloseDelaySeconds));
TwoStreams_BothPlaying(resampler_.get());
}
TEST_F(AudioOutputProxyTest, OpenFailed) { OpenFailed(dispatcher_impl_.get()); }
// Start() method failed.
TEST_F(AudioOutputProxyTest, StartFailed) {
StartFailed(dispatcher_impl_.get());
}
TEST_F(AudioOutputResamplerTest, StartFailed) { StartFailed(resampler_.get()); }
// Simulate AudioOutputStream::Create() failure with a low latency stream and
// ensure AudioOutputResampler falls back to the high latency path.
TEST_F(AudioOutputResamplerTest, LowLatencyCreateFailedFallback) {
MockAudioOutputStream stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.Times(2)
.WillOnce(Return(static_cast<AudioOutputStream*>(NULL)))
.WillRepeatedly(Return(&stream));
EXPECT_CALL(stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
EXPECT_TRUE(proxy->Open());
proxy->Close();
WaitForCloseTimer(kTestCloseDelayMs);
}
// Simulate AudioOutputStream::Open() failure with a low latency stream and
// ensure AudioOutputResampler falls back to the high latency path.
TEST_F(AudioOutputResamplerTest, LowLatencyOpenFailedFallback) {
MockAudioOutputStream failed_stream(&manager_, params_);
MockAudioOutputStream okay_stream(&manager_, params_);
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.Times(2)
.WillOnce(Return(&failed_stream))
.WillRepeatedly(Return(&okay_stream));
EXPECT_CALL(failed_stream, Open())
.WillOnce(Return(false));
EXPECT_CALL(failed_stream, Close())
.Times(1);
EXPECT_CALL(okay_stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(okay_stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
EXPECT_TRUE(proxy->Open());
proxy->Close();
WaitForCloseTimer(kTestCloseDelayMs);
}
// Simulate failures to open both the low latency and the fallback high latency
// stream and ensure AudioOutputResampler falls back to a fake stream.
TEST_F(AudioOutputResamplerTest, HighLatencyFallbackFailed) {
MockAudioOutputStream okay_stream(&manager_, params_);
// Only Windows has a high latency output driver that is not the same as the low
// latency path.
#if defined(OS_WIN)
static const int kFallbackCount = 2;
#else
static const int kFallbackCount = 1;
#endif
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.Times(kFallbackCount)
.WillRepeatedly(Return(static_cast<AudioOutputStream*>(NULL)));
// To prevent shared memory issues the sample rate and buffer size should
// match the input stream parameters.
EXPECT_CALL(manager(), MakeAudioOutputStream(AllOf(
testing::Property(&AudioParameters::format, AudioParameters::AUDIO_FAKE),
testing::Property(&AudioParameters::sample_rate, params_.sample_rate()),
testing::Property(
&AudioParameters::frames_per_buffer, params_.frames_per_buffer())),
_))
.Times(1)
.WillOnce(Return(&okay_stream));
EXPECT_CALL(okay_stream, Open())
.WillOnce(Return(true));
EXPECT_CALL(okay_stream, Close())
.Times(1);
AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
EXPECT_TRUE(proxy->Open());
proxy->Close();
WaitForCloseTimer(kTestCloseDelayMs);
}
// Simulate failures to open both the low latency, the fallback high latency
// stream, and the fake audio output stream and ensure AudioOutputResampler
// terminates normally.
TEST_F(AudioOutputResamplerTest, AllFallbackFailed) {
// Only Windows has a high latency output driver that is not the same as the low
// latency path.
#if defined(OS_WIN)
static const int kFallbackCount = 3;
#else
static const int kFallbackCount = 2;
#endif
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.Times(kFallbackCount)
.WillRepeatedly(Return(static_cast<AudioOutputStream*>(NULL)));
AudioOutputProxy* proxy = new AudioOutputProxy(resampler_.get());
EXPECT_FALSE(proxy->Open());
proxy->Close();
WaitForCloseTimer(kTestCloseDelayMs);
}
// Simulate an eventual OpenStream() failure; i.e. successful OpenStream() calls
// eventually followed by one which fails; root cause of http://crbug.com/150619
TEST_F(AudioOutputResamplerTest, LowLatencyOpenEventuallyFails) {
MockAudioOutputStream stream1(&manager_, params_);
MockAudioOutputStream stream2(&manager_, params_);
MockAudioOutputStream stream3(&manager_, params_);
// Setup the mock such that all three streams are successfully created.
EXPECT_CALL(manager(), MakeAudioOutputStream(_, _))
.WillOnce(Return(&stream1))
.WillOnce(Return(&stream2))
.WillOnce(Return(&stream3))
.WillRepeatedly(Return(static_cast<AudioOutputStream*>(NULL)));
// Stream1 should be able to successfully open and start.
EXPECT_CALL(stream1, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream1, Close())
.Times(1);
EXPECT_CALL(stream1, SetVolume(_))
.Times(1);
// Stream2 should also be able to successfully open and start.
EXPECT_CALL(stream2, Open())
.WillOnce(Return(true));
EXPECT_CALL(stream2, Close())
.Times(1);
EXPECT_CALL(stream2, SetVolume(_))
.Times(1);
// Stream3 should fail on Open() (yet still be closed since
// MakeAudioOutputStream returned a valid AudioOutputStream object).
EXPECT_CALL(stream3, Open())
.WillOnce(Return(false));
EXPECT_CALL(stream3, Close())
.Times(1);
// Open and start the first proxy and stream.
AudioOutputProxy* proxy1 = new AudioOutputProxy(resampler_.get());
EXPECT_TRUE(proxy1->Open());
proxy1->Start(&callback_);
OnStart();
// Open and start the second proxy and stream.
AudioOutputProxy* proxy2 = new AudioOutputProxy(resampler_.get());
EXPECT_TRUE(proxy2->Open());
proxy2->Start(&callback_);
OnStart();
// Attempt to open the third stream which should fail.
AudioOutputProxy* proxy3 = new AudioOutputProxy(resampler_.get());
EXPECT_FALSE(proxy3->Open());
// Perform the required Stop()/Close() shutdown dance for each proxy. Under
// the hood each proxy should correctly call CloseStream() if OpenStream()
// succeeded or not.
proxy3->Stop();
proxy3->Close();
proxy2->Stop();
proxy2->Close();
proxy1->Stop();
proxy1->Close();
// Wait for all of the messages to fly and then verify stream behavior.
WaitForCloseTimer(kTestCloseDelayMs);
EXPECT_TRUE(stream1.stop_called());
EXPECT_TRUE(stream1.start_called());
EXPECT_TRUE(stream2.stop_called());
EXPECT_TRUE(stream2.start_called());
EXPECT_FALSE(stream3.stop_called());
EXPECT_FALSE(stream3.start_called());
}
} // namespace media
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