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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 "base/bind.h"
#include "base/bind_helpers.h"
#include "base/macros.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "media/audio/audio_manager.h"
#include "media/audio/simple_sources.h"
#include "media/audio/virtual_audio_input_stream.h"
#include "media/audio/virtual_audio_output_stream.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::_;
namespace media {
namespace {
const AudioParameters kParams(
AudioParameters::AUDIO_PCM_LOW_LATENCY, CHANNEL_LAYOUT_MONO, 8000, 8, 128);
}
class MockVirtualAudioInputStream : public VirtualAudioInputStream {
public:
explicit MockVirtualAudioInputStream(
const scoped_refptr<base::SingleThreadTaskRunner>& worker_task_runner)
: VirtualAudioInputStream(
kParams,
worker_task_runner,
base::Bind(&base::DeletePointer<VirtualAudioInputStream>)) {}
~MockVirtualAudioInputStream() {}
MOCK_METHOD2(AddOutputStream, void(VirtualAudioOutputStream* stream,
const AudioParameters& output_params));
MOCK_METHOD2(RemoveOutputStream, void(VirtualAudioOutputStream* stream,
const AudioParameters& output_params));
private:
DISALLOW_COPY_AND_ASSIGN(MockVirtualAudioInputStream);
};
class MockAudioDeviceListener : public AudioManager::AudioDeviceListener {
public:
MOCK_METHOD0(OnDeviceChange, void());
};
class VirtualAudioOutputStreamTest : public testing::Test {
public:
VirtualAudioOutputStreamTest()
: audio_thread_(new base::Thread("AudioThread")) {
audio_thread_->Start();
audio_task_runner_ = audio_thread_->task_runner();
}
const scoped_refptr<base::SingleThreadTaskRunner>& audio_task_runner() const {
return audio_task_runner_;
}
void SyncWithAudioThread() {
base::WaitableEvent done(false, false);
audio_task_runner()->PostTask(
FROM_HERE, base::Bind(&base::WaitableEvent::Signal,
base::Unretained(&done)));
done.Wait();
}
private:
scoped_ptr<base::Thread> audio_thread_;
scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
DISALLOW_COPY_AND_ASSIGN(VirtualAudioOutputStreamTest);
};
TEST_F(VirtualAudioOutputStreamTest, StartStopStartStop) {
static const int kCycles = 3;
MockVirtualAudioInputStream* const input_stream =
new MockVirtualAudioInputStream(audio_task_runner());
audio_task_runner()->PostTask(
FROM_HERE, base::Bind(
base::IgnoreResult(&MockVirtualAudioInputStream::Open),
base::Unretained(input_stream)));
VirtualAudioOutputStream* const output_stream = new VirtualAudioOutputStream(
kParams,
input_stream,
base::Bind(&base::DeletePointer<VirtualAudioOutputStream>));
EXPECT_CALL(*input_stream, AddOutputStream(output_stream, _))
.Times(kCycles);
EXPECT_CALL(*input_stream, RemoveOutputStream(output_stream, _))
.Times(kCycles);
audio_task_runner()->PostTask(
FROM_HERE, base::Bind(base::IgnoreResult(&VirtualAudioOutputStream::Open),
base::Unretained(output_stream)));
SineWaveAudioSource source(CHANNEL_LAYOUT_STEREO, 200.0, 128);
for (int i = 0; i < kCycles; ++i) {
audio_task_runner()->PostTask(
FROM_HERE, base::Bind(&VirtualAudioOutputStream::Start,
base::Unretained(output_stream),
&source));
audio_task_runner()->PostTask(
FROM_HERE, base::Bind(&VirtualAudioOutputStream::Stop,
base::Unretained(output_stream)));
}
audio_task_runner()->PostTask(
FROM_HERE, base::Bind(&VirtualAudioOutputStream::Close,
base::Unretained(output_stream)));
audio_task_runner()->PostTask(
FROM_HERE, base::Bind(&MockVirtualAudioInputStream::Close,
base::Unretained(input_stream)));
SyncWithAudioThread();
}
} // namespace media
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