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| 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 "base/basictypes.h" | |
| 6 #include "base/command_line.h" | |
| 7 #include "base/file_util.h" | |
| 8 #include "base/message_loop/message_loop.h" | |
| 9 #include "base/path_service.h" | |
| 10 #include "base/test/test_timeouts.h" | |
| 11 #include "base/time/time.h" | |
| 12 #include "base/win/scoped_com_initializer.h" | |
| 13 #include "media/audio/audio_io.h" | |
| 14 #include "media/audio/audio_manager.h" | |
| 15 #include "media/audio/mock_audio_source_callback.h" | |
| 16 #include "media/audio/win/audio_unified_win.h" | |
| 17 #include "media/audio/win/core_audio_util_win.h" | |
| 18 #include "media/base/channel_mixer.h" | |
| 19 #include "media/base/media_switches.h" | |
| 20 #include "testing/gmock/include/gmock/gmock.h" | |
| 21 #include "testing/gtest/include/gtest/gtest.h" | |
| 22 | |
| 23 using ::testing::_; | |
| 24 using ::testing::AtLeast; | |
| 25 using ::testing::Between; | |
| 26 using ::testing::DoAll; | |
| 27 using ::testing::NotNull; | |
| 28 using ::testing::Return; | |
| 29 using base::win::ScopedCOMInitializer; | |
| 30 | |
| 31 namespace media { | |
| 32 | |
| 33 static const size_t kMaxDeltaSamples = 1000; | |
| 34 static const char kDeltaTimeMsFileName[] = "unified_delta_times_ms.txt"; | |
| 35 | |
| 36 // Verify that the delay estimate in the OnMoreIOData() callback is larger | |
| 37 // than an expected minumum value. | |
| 38 MATCHER_P(DelayGreaterThan, value, "") { | |
| 39 return (arg.hardware_delay_bytes > value.hardware_delay_bytes); | |
| 40 } | |
| 41 | |
| 42 // Used to terminate a loop from a different thread than the loop belongs to. | |
| 43 // |loop| should be a MessageLoopProxy. | |
| 44 ACTION_P(QuitLoop, loop) { | |
| 45 loop->PostTask(FROM_HERE, base::MessageLoop::QuitClosure()); | |
| 46 } | |
| 47 | |
| 48 // AudioOutputStream::AudioSourceCallback implementation which enables audio | |
| 49 // play-through. It also creates a text file that contains times between two | |
| 50 // successive callbacks. Units are in milliseconds. This file can be used for | |
| 51 // off-line analysis of the callback sequence. | |
| 52 class UnifiedSourceCallback : public AudioOutputStream::AudioSourceCallback { | |
| 53 public: | |
| 54 explicit UnifiedSourceCallback() | |
| 55 : previous_call_time_(base::TimeTicks::Now()), | |
| 56 text_file_(NULL), | |
| 57 elements_to_write_(0) { | |
| 58 delta_times_.reset(new int[kMaxDeltaSamples]); | |
| 59 } | |
| 60 | |
| 61 virtual ~UnifiedSourceCallback() { | |
| 62 base::FilePath file_name; | |
| 63 EXPECT_TRUE(PathService::Get(base::DIR_EXE, &file_name)); | |
| 64 file_name = file_name.AppendASCII(kDeltaTimeMsFileName); | |
| 65 | |
| 66 EXPECT_TRUE(!text_file_); | |
| 67 text_file_ = base::OpenFile(file_name, "wt"); | |
| 68 DLOG_IF(ERROR, !text_file_) << "Failed to open log file."; | |
| 69 VLOG(0) << ">> Output file " << file_name.value() << " has been created."; | |
| 70 | |
| 71 // Write the array which contains delta times to a text file. | |
| 72 size_t elements_written = 0; | |
| 73 while (elements_written < elements_to_write_) { | |
| 74 fprintf(text_file_, "%d\n", delta_times_[elements_written]); | |
| 75 ++elements_written; | |
| 76 } | |
| 77 base::CloseFile(text_file_); | |
| 78 } | |
| 79 | |
| 80 virtual int OnMoreData(AudioBus* dest, | |
| 81 AudioBuffersState buffers_state) { | |
| 82 NOTREACHED(); | |
| 83 return 0; | |
| 84 }; | |
| 85 | |
| 86 virtual int OnMoreIOData(AudioBus* source, | |
| 87 AudioBus* dest, | |
| 88 AudioBuffersState buffers_state) { | |
| 89 // Store time between this callback and the previous callback. | |
| 90 const base::TimeTicks now_time = base::TimeTicks::Now(); | |
| 91 const int diff = (now_time - previous_call_time_).InMilliseconds(); | |
| 92 previous_call_time_ = now_time; | |
| 93 if (elements_to_write_ < kMaxDeltaSamples) { | |
| 94 delta_times_[elements_to_write_] = diff; | |
| 95 ++elements_to_write_; | |
| 96 } | |
| 97 | |
| 98 // Play out the recorded audio samples in loop back. Perform channel mixing | |
| 99 // if required using a channel mixer which is created only if needed. | |
| 100 if (source->channels() == dest->channels()) { | |
| 101 source->CopyTo(dest); | |
| 102 } else { | |
| 103 // A channel mixer is required for converting audio between two different | |
| 104 // channel layouts. | |
| 105 if (!channel_mixer_) { | |
| 106 // Guessing the channel layout will work OK for this unit test. | |
| 107 // Main thing is that the number of channels is correct. | |
| 108 ChannelLayout input_layout = GuessChannelLayout(source->channels()); | |
| 109 ChannelLayout output_layout = GuessChannelLayout(dest->channels()); | |
| 110 channel_mixer_.reset(new ChannelMixer(input_layout, output_layout)); | |
| 111 DVLOG(1) << "Remixing channel layout from " << input_layout | |
| 112 << " to " << output_layout << "; from " | |
| 113 << source->channels() << " channels to " | |
| 114 << dest->channels() << " channels."; | |
| 115 } | |
| 116 if (channel_mixer_) | |
| 117 channel_mixer_->Transform(source, dest); | |
| 118 } | |
| 119 return source->frames(); | |
| 120 }; | |
| 121 | |
| 122 virtual void OnError(AudioOutputStream* stream) { | |
| 123 NOTREACHED(); | |
| 124 } | |
| 125 | |
| 126 private: | |
| 127 base::TimeTicks previous_call_time_; | |
| 128 scoped_ptr<int[]> delta_times_; | |
| 129 FILE* text_file_; | |
| 130 size_t elements_to_write_; | |
| 131 scoped_ptr<ChannelMixer> channel_mixer_; | |
| 132 }; | |
| 133 | |
| 134 // Convenience method which ensures that we fulfill all required conditions | |
| 135 // to run unified audio tests on Windows. | |
| 136 static bool CanRunUnifiedAudioTests(AudioManager* audio_man) { | |
| 137 if (!CoreAudioUtil::IsSupported()) { | |
| 138 LOG(WARNING) << "This tests requires Windows Vista or higher."; | |
| 139 return false; | |
| 140 } | |
| 141 | |
| 142 if (!audio_man->HasAudioOutputDevices()) { | |
| 143 LOG(WARNING) << "No output devices detected."; | |
| 144 return false; | |
| 145 } | |
| 146 | |
| 147 if (!audio_man->HasAudioInputDevices()) { | |
| 148 LOG(WARNING) << "No input devices detected."; | |
| 149 return false; | |
| 150 } | |
| 151 | |
| 152 return true; | |
| 153 } | |
| 154 | |
| 155 // Convenience class which simplifies creation of a unified AudioOutputStream | |
| 156 // object. | |
| 157 class AudioUnifiedStreamWrapper { | |
| 158 public: | |
| 159 explicit AudioUnifiedStreamWrapper(AudioManager* audio_manager) | |
| 160 : com_init_(ScopedCOMInitializer::kMTA), | |
| 161 audio_man_(audio_manager) { | |
| 162 // We open up both both sides (input and output) using the preferred | |
| 163 // set of audio parameters. These parameters corresponds to the mix format | |
| 164 // that the audio engine uses internally for processing of shared-mode | |
| 165 // output streams. | |
| 166 AudioParameters out_params; | |
| 167 EXPECT_TRUE(SUCCEEDED(CoreAudioUtil::GetPreferredAudioParameters( | |
| 168 eRender, eConsole, &out_params))); | |
| 169 | |
| 170 // WebAudio is the only real user of unified audio and it always asks | |
| 171 // for stereo. | |
| 172 // TODO(henrika): extend support to other input channel layouts as well. | |
| 173 const int kInputChannels = 2; | |
| 174 | |
| 175 params_.Reset(out_params.format(), | |
| 176 out_params.channel_layout(), | |
| 177 out_params.channels(), | |
| 178 kInputChannels, | |
| 179 out_params.sample_rate(), | |
| 180 out_params.bits_per_sample(), | |
| 181 out_params.frames_per_buffer()); | |
| 182 } | |
| 183 | |
| 184 ~AudioUnifiedStreamWrapper() {} | |
| 185 | |
| 186 // Creates an AudioOutputStream object using default parameters. | |
| 187 WASAPIUnifiedStream* Create() { | |
| 188 return static_cast<WASAPIUnifiedStream*>(CreateOutputStream()); | |
| 189 } | |
| 190 | |
| 191 // Creates an AudioOutputStream object using default parameters but a | |
| 192 // specified input device. | |
| 193 WASAPIUnifiedStream* Create(const std::string device_id) { | |
| 194 return static_cast<WASAPIUnifiedStream*>(CreateOutputStream(device_id)); | |
| 195 } | |
| 196 | |
| 197 AudioParameters::Format format() const { return params_.format(); } | |
| 198 int channels() const { return params_.channels(); } | |
| 199 int bits_per_sample() const { return params_.bits_per_sample(); } | |
| 200 int sample_rate() const { return params_.sample_rate(); } | |
| 201 int frames_per_buffer() const { return params_.frames_per_buffer(); } | |
| 202 int bytes_per_buffer() const { return params_.GetBytesPerBuffer(); } | |
| 203 int input_channels() const { return params_.input_channels(); } | |
| 204 | |
| 205 private: | |
| 206 AudioOutputStream* CreateOutputStream() { | |
| 207 // Get the unique device ID of the default capture device instead of using | |
| 208 // AudioManagerBase::kDefaultDeviceId since it provides slightly better | |
| 209 // test coverage and will utilize the same code path as if a non default | |
| 210 // input device was used. | |
| 211 ScopedComPtr<IMMDevice> audio_device = | |
| 212 CoreAudioUtil::CreateDefaultDevice(eCapture, eConsole); | |
| 213 AudioDeviceName name; | |
| 214 EXPECT_TRUE(SUCCEEDED(CoreAudioUtil::GetDeviceName(audio_device, &name))); | |
| 215 const std::string& input_device_id = name.unique_id; | |
| 216 EXPECT_TRUE(CoreAudioUtil::DeviceIsDefault(eCapture, eConsole, | |
| 217 input_device_id)); | |
| 218 | |
| 219 // Create the unified audio I/O stream using the default input device. | |
| 220 AudioOutputStream* aos = audio_man_->MakeAudioOutputStream(params_, | |
| 221 "", input_device_id); | |
| 222 EXPECT_TRUE(aos); | |
| 223 return aos; | |
| 224 } | |
| 225 | |
| 226 AudioOutputStream* CreateOutputStream(const std::string& input_device_id) { | |
| 227 // Create the unified audio I/O stream using the specified input device. | |
| 228 AudioOutputStream* aos = audio_man_->MakeAudioOutputStream(params_, | |
| 229 "", input_device_id); | |
| 230 EXPECT_TRUE(aos); | |
| 231 return aos; | |
| 232 } | |
| 233 | |
| 234 ScopedCOMInitializer com_init_; | |
| 235 AudioManager* audio_man_; | |
| 236 AudioParameters params_; | |
| 237 }; | |
| 238 | |
| 239 // Convenience method which creates a default WASAPIUnifiedStream object. | |
| 240 static WASAPIUnifiedStream* CreateDefaultUnifiedStream( | |
| 241 AudioManager* audio_manager) { | |
| 242 AudioUnifiedStreamWrapper aosw(audio_manager); | |
| 243 return aosw.Create(); | |
| 244 } | |
| 245 | |
| 246 // Convenience method which creates a default WASAPIUnifiedStream object but | |
| 247 // with a specified audio input device. | |
| 248 static WASAPIUnifiedStream* CreateDefaultUnifiedStream( | |
| 249 AudioManager* audio_manager, const std::string& device_id) { | |
| 250 AudioUnifiedStreamWrapper aosw(audio_manager); | |
| 251 return aosw.Create(device_id); | |
| 252 } | |
| 253 | |
| 254 // Test Open(), Close() calling sequence. | |
| 255 TEST(WASAPIUnifiedStreamTest, OpenAndClose) { | |
| 256 scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting()); | |
| 257 if (!CanRunUnifiedAudioTests(audio_manager.get())) | |
| 258 return; | |
| 259 | |
| 260 WASAPIUnifiedStream* wus = CreateDefaultUnifiedStream(audio_manager.get()); | |
| 261 EXPECT_TRUE(wus->Open()); | |
| 262 wus->Close(); | |
| 263 } | |
| 264 | |
| 265 // Test Open(), Close() calling sequence for all available capture devices. | |
| 266 TEST(WASAPIUnifiedStreamTest, OpenAndCloseForAllInputDevices) { | |
| 267 scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting()); | |
| 268 if (!CanRunUnifiedAudioTests(audio_manager.get())) | |
| 269 return; | |
| 270 | |
| 271 AudioDeviceNames device_names; | |
| 272 audio_manager->GetAudioInputDeviceNames(&device_names); | |
| 273 for (AudioDeviceNames::iterator i = device_names.begin(); | |
| 274 i != device_names.end(); ++i) { | |
| 275 WASAPIUnifiedStream* wus = CreateDefaultUnifiedStream( | |
| 276 audio_manager.get(), i->unique_id); | |
| 277 EXPECT_TRUE(wus->Open()); | |
| 278 wus->Close(); | |
| 279 } | |
| 280 } | |
| 281 | |
| 282 // Test Open(), Start(), Close() calling sequence. | |
| 283 TEST(WASAPIUnifiedStreamTest, OpenStartAndClose) { | |
| 284 scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting()); | |
| 285 if (!CanRunUnifiedAudioTests(audio_manager.get())) | |
| 286 return; | |
| 287 | |
| 288 MockAudioSourceCallback source; | |
| 289 AudioUnifiedStreamWrapper ausw(audio_manager.get()); | |
| 290 WASAPIUnifiedStream* wus = ausw.Create(); | |
| 291 | |
| 292 EXPECT_TRUE(wus->Open()); | |
| 293 EXPECT_CALL(source, OnError(wus)) | |
| 294 .Times(0); | |
| 295 EXPECT_CALL(source, OnMoreIOData(NotNull(), NotNull(), _)) | |
| 296 .Times(Between(0, 1)) | |
| 297 .WillOnce(Return(ausw.frames_per_buffer())); | |
| 298 wus->Start(&source); | |
| 299 wus->Close(); | |
| 300 } | |
| 301 | |
| 302 // Verify that IO callbacks starts as they should. | |
| 303 TEST(WASAPIUnifiedStreamTest, StartLoopbackAudio) { | |
| 304 scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting()); | |
| 305 if (!CanRunUnifiedAudioTests(audio_manager.get())) | |
| 306 return; | |
| 307 | |
| 308 base::MessageLoopForUI loop; | |
| 309 MockAudioSourceCallback source; | |
| 310 AudioUnifiedStreamWrapper ausw(audio_manager.get()); | |
| 311 WASAPIUnifiedStream* wus = ausw.Create(); | |
| 312 | |
| 313 // Set up expected minimum delay estimation where we use a minium delay | |
| 314 // which is equal to the sum of render and capture sizes. We can never | |
| 315 // reach a delay lower than this value. | |
| 316 AudioBuffersState min_total_audio_delay(0, 2 * ausw.bytes_per_buffer()); | |
| 317 | |
| 318 EXPECT_TRUE(wus->Open()); | |
| 319 EXPECT_CALL(source, OnError(wus)) | |
| 320 .Times(0); | |
| 321 EXPECT_CALL(source, OnMoreIOData( | |
| 322 NotNull(), NotNull(), DelayGreaterThan(min_total_audio_delay))) | |
| 323 .Times(AtLeast(2)) | |
| 324 .WillOnce(Return(ausw.frames_per_buffer())) | |
| 325 .WillOnce(DoAll( | |
| 326 QuitLoop(loop.message_loop_proxy()), | |
| 327 Return(ausw.frames_per_buffer()))); | |
| 328 wus->Start(&source); | |
| 329 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), | |
| 330 TestTimeouts::action_timeout()); | |
| 331 loop.Run(); | |
| 332 wus->Stop(); | |
| 333 wus->Close(); | |
| 334 } | |
| 335 | |
| 336 // Perform a real-time test in loopback where the recorded audio is echoed | |
| 337 // back to the speaker. This test allows the user to verify that the audio | |
| 338 // sounds OK. A text file with name |kDeltaTimeMsFileName| is also generated. | |
| 339 TEST(WASAPIUnifiedStreamTest, DISABLED_RealTimePlayThrough) { | |
| 340 scoped_ptr<AudioManager> audio_manager(AudioManager::CreateForTesting()); | |
| 341 if (!CanRunUnifiedAudioTests(audio_manager.get())) | |
| 342 return; | |
| 343 | |
| 344 base::MessageLoopForUI loop; | |
| 345 UnifiedSourceCallback source; | |
| 346 WASAPIUnifiedStream* wus = CreateDefaultUnifiedStream(audio_manager.get()); | |
| 347 | |
| 348 EXPECT_TRUE(wus->Open()); | |
| 349 wus->Start(&source); | |
| 350 loop.PostDelayedTask(FROM_HERE, base::MessageLoop::QuitClosure(), | |
| 351 base::TimeDelta::FromMilliseconds(10000)); | |
| 352 loop.Run(); | |
| 353 wus->Close(); | |
| 354 } | |
| 355 | |
| 356 } // namespace media | |
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Chromium Code Reviews
Issue 163343002:
Reland 153623004: Remove the unified IO code on the browser (Closed)
Base URL: http://git.chromium.org/chromium/src.git@master