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// Copyright 2013 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/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "media/audio/audio_io.h"
#include "media/audio/audio_manager.h"
#include "media/audio/simple_sources.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::_;
using ::testing::AnyNumber;
using ::testing::DoAll;
using ::testing::Field;
using ::testing::InSequence;
using ::testing::Invoke;
using ::testing::NiceMock;
using ::testing::NotNull;
using ::testing::Return;
static const int kBitsPerSample = 16;
// TODO(crogers): Most of these tests can be made platform agnostic.
// http://crbug.com/223242
namespace media {
class MockAudioSourceCallback : public AudioOutputStream::AudioSourceCallback {
public:
MOCK_METHOD2(OnMoreData, int(AudioBus* audio_bus,
AudioBuffersState buffers_state));
MOCK_METHOD3(OnMoreIOData, int(AudioBus* source,
AudioBus* dest,
AudioBuffersState buffers_state));
MOCK_METHOD1(OnError, void(AudioOutputStream* stream));
};
// Convenience method which creates a default AudioOutputStream object but
// also allows the user to modify the default settings.
class AudioOutputStreamWrapper {
public:
explicit AudioOutputStreamWrapper()
: audio_man_(AudioManager::Create()),
format_(AudioParameters::AUDIO_PCM_LOW_LATENCY),
bits_per_sample_(kBitsPerSample) {
AudioParameters preferred_params =
audio_man_->GetDefaultOutputStreamParameters();
channel_layout_ = preferred_params.channel_layout();
channels_ = preferred_params.channels();
sample_rate_ = preferred_params.sample_rate();
samples_per_packet_ = preferred_params.frames_per_buffer();
}
~AudioOutputStreamWrapper() {}
// Creates AudioOutputStream object using default parameters.
AudioOutputStream* Create() {
return CreateOutputStream();
}
// Creates AudioOutputStream object using non-default parameters where the
// frame size is modified.
AudioOutputStream* Create(int samples_per_packet) {
samples_per_packet_ = samples_per_packet;
return CreateOutputStream();
}
// Creates AudioOutputStream object using non-default parameters where the
// sample rate is modified.
AudioOutputStream* CreateWithSampleRate(int sample_rate) {
sample_rate_ = sample_rate;
return CreateOutputStream();
}
// Creates AudioOutputStream object using non-default parameters where the
// channel layout is modified.
AudioOutputStream* CreateWithLayout(ChannelLayout layout) {
channel_layout_ = layout;
channels_ = ChannelLayoutToChannelCount(layout);
return CreateOutputStream();
}
AudioParameters::Format format() const { return format_; }
int channels() const { return ChannelLayoutToChannelCount(channel_layout_); }
int bits_per_sample() const { return bits_per_sample_; }
int sample_rate() const { return sample_rate_; }
int samples_per_packet() const { return samples_per_packet_; }
bool CanRunAudioTests() {
return audio_man_->HasAudioOutputDevices();
}
private:
AudioOutputStream* CreateOutputStream() {
AudioParameters params;
params.Reset(format_, channel_layout_,
channels_, 0,
sample_rate_, bits_per_sample_,
samples_per_packet_);
AudioOutputStream* aos = audio_man_->MakeAudioOutputStream(params,
std::string(), std::string());
EXPECT_TRUE(aos);
return aos;
}
scoped_ptr<AudioManager> audio_man_;
AudioParameters::Format format_;
ChannelLayout channel_layout_;
int channels_;
int bits_per_sample_;
int sample_rate_;
int samples_per_packet_;
};
// Test that we can get the hardware sample-rate.
TEST(AUHALStreamTest, HardwareSampleRate) {
AudioOutputStreamWrapper aosw;
if (!aosw.CanRunAudioTests())
return;
int sample_rate = aosw.sample_rate();
EXPECT_GE(sample_rate, 16000);
EXPECT_LE(sample_rate, 192000);
}
// Test Create(), Close() calling sequence.
TEST(AUHALStreamTest, CreateAndClose) {
AudioOutputStreamWrapper aosw;
if (!aosw.CanRunAudioTests())
return;
AudioOutputStream* aos = aosw.Create();
aos->Close();
}
// Test Open(), Close() calling sequence.
TEST(AUHALStreamTest, OpenAndClose) {
AudioOutputStreamWrapper aosw;
if (!aosw.CanRunAudioTests())
return;
AudioOutputStream* aos = aosw.Create();
EXPECT_TRUE(aos->Open());
aos->Close();
}
// Test Open(), Start(), Close() calling sequence.
TEST(AUHALStreamTest, OpenStartAndClose) {
AudioOutputStreamWrapper aosw;
if (!aosw.CanRunAudioTests())
return;
AudioOutputStream* aos = aosw.Create();
EXPECT_TRUE(aos->Open());
MockAudioSourceCallback source;
EXPECT_CALL(source, OnError(aos))
.Times(0);
aos->Start(&source);
aos->Close();
}
// Test Open(), Start(), Stop(), Close() calling sequence.
TEST(AUHALStreamTest, OpenStartStopAndClose) {
AudioOutputStreamWrapper aosw;
if (!aosw.CanRunAudioTests())
return;
AudioOutputStream* aos = aosw.Create();
EXPECT_TRUE(aos->Open());
MockAudioSourceCallback source;
EXPECT_CALL(source, OnError(aos))
.Times(0);
aos->Start(&source);
aos->Stop();
aos->Close();
}
// This test produces actual audio for 0.5 seconds on the default audio device
// at the hardware sample-rate (usually 44.1KHz).
// Parameters have been chosen carefully so you should not hear
// pops or noises while the sound is playing.
TEST(AUHALStreamTest, AUHALStreamPlay200HzTone) {
AudioOutputStreamWrapper aosw;
if (!aosw.CanRunAudioTests())
return;
AudioOutputStream* aos = aosw.CreateWithLayout(CHANNEL_LAYOUT_MONO);
EXPECT_TRUE(aos->Open());
SineWaveAudioSource source(1, 200.0, aosw.sample_rate());
aos->Start(&source);
usleep(500000);
aos->Stop();
aos->Close();
}
// Test that Open() will fail with a sample-rate which isn't the hardware
// sample-rate.
TEST(AUHALStreamTest, AUHALStreamInvalidSampleRate) {
AudioOutputStreamWrapper aosw;
if (!aosw.CanRunAudioTests())
return;
int non_default_sample_rate = aosw.sample_rate() == 44100 ?
48000 : 44100;
AudioOutputStream* aos = aosw.CreateWithSampleRate(non_default_sample_rate);
EXPECT_FALSE(aos->Open());
aos->Close();
}
} // namespace media
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