1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <string>
6
7 #include "base/synchronization/waitable_event.h"
8 #include "base/test/test_timeouts.h"
9 #include "base/time/time.h"
10 #include "media/audio/cras/audio_manager_cras.h"
11 #include "media/audio/fake_audio_log_factory.h"
12 #include "testing/gmock/include/gmock/gmock.h"
13 #include "testing/gtest/include/gtest/gtest.h"
14
15 // cras_util.h defines custom min/max macros which break compilation, so ensure
16 // it's not included until last. #if avoids presubmit errors.
17 #if defined(USE_CRAS)
18 #include "media/audio/cras/cras_input.h"
19 #endif
20
21 using testing::_;
22 using testing::AtLeast;
23 using testing::Ge;
24 using testing::InvokeWithoutArgs;
25 using testing::StrictMock;
26
27 namespace media {
28
29 class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
30 public:
31 MOCK_METHOD4(OnData,
32 void(AudioInputStream*, const AudioBus*, uint32, double));
33 MOCK_METHOD1(OnError, void(AudioInputStream*));
34 };
35
36 class MockAudioManagerCrasInput : public AudioManagerCras {
37 public:
MockAudioManagerCrasInput()38 MockAudioManagerCrasInput() : AudioManagerCras(&fake_audio_log_factory_) {}
39
40 // We need to override this function in order to skip checking the number
41 // of active output streams. It is because the number of active streams
42 // is managed inside MakeAudioInputStream, and we don't use
43 // MakeAudioInputStream to create the stream in the tests.
ReleaseInputStream(AudioInputStream * stream)44 virtual void ReleaseInputStream(AudioInputStream* stream) OVERRIDE {
45 DCHECK(stream);
46 delete stream;
47 }
48
49 private:
50 FakeAudioLogFactory fake_audio_log_factory_;
51 };
52
53 class CrasInputStreamTest : public testing::Test {
54 protected:
CrasInputStreamTest()55 CrasInputStreamTest() {
56 mock_manager_.reset(new StrictMock<MockAudioManagerCrasInput>());
57 }
58
~CrasInputStreamTest()59 virtual ~CrasInputStreamTest() {
60 }
61
CreateStream(ChannelLayout layout)62 CrasInputStream* CreateStream(ChannelLayout layout) {
63 return CreateStream(layout, kTestFramesPerPacket);
64 }
65
CreateStream(ChannelLayout layout,int32 samples_per_packet)66 CrasInputStream* CreateStream(ChannelLayout layout,
67 int32 samples_per_packet) {
68 AudioParameters params(kTestFormat,
69 layout,
70 kTestSampleRate,
71 kTestBitsPerSample,
72 samples_per_packet);
73 return new CrasInputStream(params, mock_manager_.get(),
74 AudioManagerBase::kDefaultDeviceId);
75 }
76
CaptureSomeFrames(const AudioParameters & params,unsigned int duration_ms)77 void CaptureSomeFrames(const AudioParameters ¶ms,
78 unsigned int duration_ms) {
79 CrasInputStream* test_stream = new CrasInputStream(
80 params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
81
82 ASSERT_TRUE(test_stream->Open());
83
84 // Allow 8 frames variance for SRC in the callback. Different numbers of
85 // samples can be provided when doing non-integer SRC. For example
86 // converting from 192k to 44.1k is a ratio of 4.35 to 1.
87 MockAudioInputCallback mock_callback;
88 base::WaitableEvent event(false, false);
89
90 EXPECT_CALL(mock_callback, OnData(test_stream, _, _, _))
91 .WillOnce(InvokeWithoutArgs(&event, &base::WaitableEvent::Signal));
92
93 test_stream->Start(&mock_callback);
94
95 // Wait for samples to be captured.
96 EXPECT_TRUE(event.TimedWait(TestTimeouts::action_timeout()));
97
98 test_stream->Stop();
99 test_stream->Close();
100 }
101
102 static const unsigned int kTestBitsPerSample;
103 static const unsigned int kTestCaptureDurationMs;
104 static const ChannelLayout kTestChannelLayout;
105 static const AudioParameters::Format kTestFormat;
106 static const uint32 kTestFramesPerPacket;
107 static const int kTestSampleRate;
108
109 scoped_ptr<StrictMock<MockAudioManagerCrasInput> > mock_manager_;
110
111 private:
112 DISALLOW_COPY_AND_ASSIGN(CrasInputStreamTest);
113 };
114
115 const unsigned int CrasInputStreamTest::kTestBitsPerSample = 16;
116 const unsigned int CrasInputStreamTest::kTestCaptureDurationMs = 250;
117 const ChannelLayout CrasInputStreamTest::kTestChannelLayout =
118 CHANNEL_LAYOUT_STEREO;
119 const AudioParameters::Format CrasInputStreamTest::kTestFormat =
120 AudioParameters::AUDIO_PCM_LINEAR;
121 const uint32 CrasInputStreamTest::kTestFramesPerPacket = 1000;
122 const int CrasInputStreamTest::kTestSampleRate = 44100;
123
TEST_F(CrasInputStreamTest,OpenMono)124 TEST_F(CrasInputStreamTest, OpenMono) {
125 CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_MONO);
126 EXPECT_TRUE(test_stream->Open());
127 test_stream->Close();
128 }
129
TEST_F(CrasInputStreamTest,OpenStereo)130 TEST_F(CrasInputStreamTest, OpenStereo) {
131 CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_STEREO);
132 EXPECT_TRUE(test_stream->Open());
133 test_stream->Close();
134 }
135
TEST_F(CrasInputStreamTest,BadBitsPerSample)136 TEST_F(CrasInputStreamTest, BadBitsPerSample) {
137 AudioParameters bad_bps_params(kTestFormat,
138 kTestChannelLayout,
139 kTestSampleRate,
140 kTestBitsPerSample - 1,
141 kTestFramesPerPacket);
142 CrasInputStream* test_stream = new CrasInputStream(
143 bad_bps_params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
144 EXPECT_FALSE(test_stream->Open());
145 test_stream->Close();
146 }
147
TEST_F(CrasInputStreamTest,BadFormat)148 TEST_F(CrasInputStreamTest, BadFormat) {
149 AudioParameters bad_format_params(AudioParameters::AUDIO_LAST_FORMAT,
150 kTestChannelLayout,
151 kTestSampleRate,
152 kTestBitsPerSample,
153 kTestFramesPerPacket);
154 CrasInputStream* test_stream = new CrasInputStream(
155 bad_format_params, mock_manager_.get(),
156 AudioManagerBase::kDefaultDeviceId);
157 EXPECT_FALSE(test_stream->Open());
158 test_stream->Close();
159 }
160
TEST_F(CrasInputStreamTest,BadSampleRate)161 TEST_F(CrasInputStreamTest, BadSampleRate) {
162 AudioParameters bad_rate_params(kTestFormat,
163 kTestChannelLayout,
164 0,
165 kTestBitsPerSample,
166 kTestFramesPerPacket);
167 CrasInputStream* test_stream = new CrasInputStream(
168 bad_rate_params, mock_manager_.get(), AudioManagerBase::kDefaultDeviceId);
169 EXPECT_FALSE(test_stream->Open());
170 test_stream->Close();
171 }
172
TEST_F(CrasInputStreamTest,SetGetVolume)173 TEST_F(CrasInputStreamTest, SetGetVolume) {
174 CrasInputStream* test_stream = CreateStream(CHANNEL_LAYOUT_MONO);
175 EXPECT_TRUE(test_stream->Open());
176
177 double max_volume = test_stream->GetMaxVolume();
178 EXPECT_GE(max_volume, 1.0);
179
180 test_stream->SetVolume(max_volume / 2);
181
182 double new_volume = test_stream->GetVolume();
183
184 EXPECT_GE(new_volume, 0.0);
185 EXPECT_LE(new_volume, max_volume);
186
187 test_stream->Close();
188 }
189
TEST_F(CrasInputStreamTest,CaptureFrames)190 TEST_F(CrasInputStreamTest, CaptureFrames) {
191 const unsigned int rates[] =
192 {8000, 16000, 22050, 32000, 44100, 48000, 96000, 192000};
193
194 for (unsigned int i = 0; i < ARRAY_SIZE(rates); i++) {
195 SCOPED_TRACE(testing::Message() << "Mono " << rates[i] << "Hz");
196 AudioParameters params_mono(kTestFormat,
197 CHANNEL_LAYOUT_MONO,
198 rates[i],
199 kTestBitsPerSample,
200 kTestFramesPerPacket);
201 CaptureSomeFrames(params_mono, kTestCaptureDurationMs);
202 }
203
204 for (unsigned int i = 0; i < ARRAY_SIZE(rates); i++) {
205 SCOPED_TRACE(testing::Message() << "Stereo " << rates[i] << "Hz");
206 AudioParameters params_stereo(kTestFormat,
207 CHANNEL_LAYOUT_STEREO,
208 rates[i],
209 kTestBitsPerSample,
210 kTestFramesPerPacket);
211 CaptureSomeFrames(params_stereo, kTestCaptureDurationMs);
212 }
213 }
214
215 } // namespace media
216