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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 <unistd.h>
#include <string>
#include "base/synchronization/waitable_event.h"
#include "base/test/test_timeouts.h"
#include "base/time/time.h"
#include "media/audio/cras/audio_manager_cras.h"
#include "media/audio/cras/cras_input.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
using testing::_;
using testing::AtLeast;
using testing::Ge;
using testing::InvokeWithoutArgs;
using testing::StrictMock;
namespace media {
class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
public:
MOCK_METHOD5(OnData, void(
AudioInputStream*, const uint8*, uint32, uint32, double));
MOCK_METHOD1(OnError, void(AudioInputStream*));
};
class MockAudioManagerCrasInput : public AudioManagerCras {
public:
// We need to override this function in order to skip checking the number
// of active output streams. It is because the number of active streams
// is managed inside MakeAudioInputStream, and we don't use
// MakeAudioInputStream to create the stream in the tests.
virtual void ReleaseInputStream(AudioInputStream* stream) OVERRIDE {
DCHECK(stream);
delete stream;
}
};
class CrasInputStreamTest : public testing::Test {
protected:
CrasInputStreamTest() {
mock_manager_.reset(new StrictMock<MockAudioManagerCrasInput>());
}
virtual ~CrasInputStreamTest() {
}
CrasInputStream* CreateStream(ChannelLayout layout) {
return CreateStream(layout, kTestFramesPerPacket);
}
CrasInputStream* CreateStream(ChannelLayout layout,
int32 samples_per_packet) {
AudioParameters params(kTestFormat,
layout,
kTestSampleRate,
kTestBitsPerSample,
samples_per_packet);
return new CrasInputStream(params, mock_manager_.get(),
AudioManagerBase::kDefaultDeviceId);
}
void CaptureSomeFrames(const AudioParameters ¶ms,
unsigned int duration_ms) {
CrasInputStream* test_stream = new CrasInputStream(
params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
ASSERT_TRUE(test_stream->Open());
// Allow 8 frames variance for SRC in the callback. Different numbers of
// samples can be provided when doing non-integer SRC. For example
// converting from 192k to 44.1k is a ratio of 4.35 to 1.
MockAudioInputCallback mock_callback;
unsigned int expected_size = (kTestFramesPerPacket - 8) *
params.channels() *
params.bits_per_sample() / 8;
base::WaitableEvent event(false, false);
EXPECT_CALL(mock_callback,
OnData(test_stream, _, Ge(expected_size), _, _))
.WillOnce(InvokeWithoutArgs(&event, &base::WaitableEvent::Signal));
test_stream->Start(&mock_callback);
// Wait for samples to be captured.
EXPECT_TRUE(event.TimedWait(TestTimeouts::action_timeout()));
test_stream->Stop();
test_stream->Close();
}
static const unsigned int kTestBitsPerSample;
static const unsigned int kTestCaptureDurationMs;
static const ChannelLayout kTestChannelLayout;
static const AudioParameters::Format kTestFormat;
static const uint32 kTestFramesPerPacket;
static const int kTestSampleRate;
scoped_ptr<StrictMock<MockAudioManagerCrasInput> > mock_manager_;
private:
DISALLOW_COPY_AND_ASSIGN(CrasInputStreamTest);
};
const unsigned int CrasInputStreamTest::kTestBitsPerSample = 16;
const unsigned int CrasInputStreamTest::kTestCaptureDurationMs = 250;
const ChannelLayout CrasInputStreamTest::kTestChannelLayout =
CHANNEL_LAYOUT_STEREO;
const AudioParameters::Format CrasInputStreamTest::kTestFormat =
AudioParameters::AUDIO_PCM_LINEAR;
const uint32 CrasInputStreamTest::kTestFramesPerPacket = 1000;
const int CrasInputStreamTest::kTestSampleRate = 44100;
TEST_F(CrasInputStreamTest, OpenMono) {
CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_MONO);
EXPECT_TRUE(test_stream->Open());
test_stream->Close();
}
TEST_F(CrasInputStreamTest, OpenStereo) {
CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_STEREO);
EXPECT_TRUE(test_stream->Open());
test_stream->Close();
}
TEST_F(CrasInputStreamTest, BadBitsPerSample) {
AudioParameters bad_bps_params(kTestFormat,
kTestChannelLayout,
kTestSampleRate,
kTestBitsPerSample - 1,
kTestFramesPerPacket);
CrasInputStream* test_stream = new CrasInputStream(
bad_bps_params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
EXPECT_FALSE(test_stream->Open());
test_stream->Close();
}
TEST_F(CrasInputStreamTest, BadFormat) {
AudioParameters bad_format_params(AudioParameters::AUDIO_LAST_FORMAT,
kTestChannelLayout,
kTestSampleRate,
kTestBitsPerSample,
kTestFramesPerPacket);
CrasInputStream* test_stream = new CrasInputStream(
bad_format_params, mock_manager_.get(),
AudioManagerBase::kDefaultDeviceId);
EXPECT_FALSE(test_stream->Open());
test_stream->Close();
}
TEST_F(CrasInputStreamTest, BadSampleRate) {
AudioParameters bad_rate_params(kTestFormat,
kTestChannelLayout,
0,
kTestBitsPerSample,
kTestFramesPerPacket);
CrasInputStream* test_stream = new CrasInputStream(
bad_rate_params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
EXPECT_FALSE(test_stream->Open());
test_stream->Close();
}
TEST_F(CrasInputStreamTest, SetGetVolume) {
CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_MONO);
EXPECT_TRUE(test_stream->Open());
double max_volume = test_stream->GetMaxVolume();
EXPECT_GE(max_volume, 1.0);
test_stream->SetVolume(max_volume / 2);
double new_volume = test_stream->GetVolume();
EXPECT_GE(new_volume, 0.0);
EXPECT_LE(new_volume, max_volume);
test_stream->Close();
}
TEST_F(CrasInputStreamTest, CaptureFrames) {
const unsigned int rates[] =
{8000, 16000, 22050, 32000, 44100, 48000, 96000, 192000};
for (unsigned int i = 0; i < ARRAY_SIZE(rates); i++) {
SCOPED_TRACE(testing::Message() << "Mono " << rates[i] << "Hz");
AudioParameters params_mono(kTestFormat,
CHANNEL_LAYOUT_MONO,
rates[i],
kTestBitsPerSample,
kTestFramesPerPacket);
CaptureSomeFrames(params_mono, kTestCaptureDurationMs);
}
for (unsigned int i = 0; i < ARRAY_SIZE(rates); i++) {
SCOPED_TRACE(testing::Message() << "Stereo " << rates[i] << "Hz");
AudioParameters params_stereo(kTestFormat,
CHANNEL_LAYOUT_STEREO,
rates[i],
kTestBitsPerSample,
kTestFramesPerPacket);
CaptureSomeFrames(params_stereo, kTestCaptureDurationMs);
}
}
} // namespace media
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