content/browser/renderer_host/media/audio_renderer_host_unittest.cc

   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/bind.h"
   6 #include "base/command_line.h"
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/run_loop.h"
   9 #include "base/sync_socket.h"
  10 #include "content/browser/media/capture/audio_mirroring_manager.h"
  11 #include "content/browser/media/media_internals.h"
  12 #include "content/browser/renderer_host/media/audio_input_device_manager.h"
  13 #include "content/browser/renderer_host/media/audio_renderer_host.h"
  14 #include "content/browser/renderer_host/media/media_stream_manager.h"
  15 #include "content/common/media/audio_messages.h"
  16 #include "content/public/common/content_switches.h"
  17 #include "content/public/test/test_browser_thread_bundle.h"
  18 #include "ipc/ipc_message_utils.h"
  19 #include "media/audio/audio_manager.h"
  20 #include "media/base/bind_to_current_loop.h"
  21 #include "media/base/media_switches.h"
  22 #include "testing/gmock/include/gmock/gmock.h"
  23 #include "testing/gtest/include/gtest/gtest.h"
  24
  25 using ::testing::_;
  26 using ::testing::Assign;
  27 using ::testing::DoAll;
  28 using ::testing::NotNull;
  29
  30 namespace {
  31 const int kRenderProcessId = 1;
  32 const int kRenderFrameId = 5;
  33 const int kStreamId = 50;
  34 const int kBadStreamId = 99;
  35 const int kSwitchOutputDeviceRequestId = 1;
  36 const GURL kSecurityOrigin("http://localhost");
  37 const std::string kDefaultDeviceID = "";
  38 const std::string kBadDeviceID = "bad-device-id";
  39 }  // namespace
  40
  41 namespace content {
  42
  43 class MockAudioMirroringManager : public AudioMirroringManager {
  44  public:
  45   MockAudioMirroringManager() {}
  46   virtual ~MockAudioMirroringManager() {}
  47
  48   MOCK_METHOD3(AddDiverter,
  49                void(int render_process_id,
  50                     int render_frame_id,
  51                     Diverter* diverter));
  52   MOCK_METHOD1(RemoveDiverter, void(Diverter* diverter));
  53
  54  private:
  55   DISALLOW_COPY_AND_ASSIGN(MockAudioMirroringManager);
  56 };
  57
  58 class MockAudioRendererHost : public AudioRendererHost {
  59  public:
  60   MockAudioRendererHost(media::AudioManager* audio_manager,
  61                         AudioMirroringManager* mirroring_manager,
  62                         MediaInternals* media_internals,
  63                         MediaStreamManager* media_stream_manager,
  64                         const ResourceContext::SaltCallback& salt_callback)
  65       : AudioRendererHost(kRenderProcessId,
  66                           audio_manager,
  67                           mirroring_manager,
  68                           media_internals,
  69                           media_stream_manager,
  70                           salt_callback),
  71         shared_memory_length_(0) {}
  72
  73   // A list of mock methods.
  74   MOCK_METHOD2(OnStreamCreated, void(int stream_id, int length));
  75   MOCK_METHOD1(OnStreamPlaying, void(int stream_id));
  76   MOCK_METHOD1(OnStreamPaused, void(int stream_id));
  77   MOCK_METHOD1(OnStreamError, void(int stream_id));
  78   MOCK_METHOD3(OnOutputDeviceSwitched,
  79                void(int stream_id,
  80                     int request_id,
  81                     media::SwitchOutputDeviceResult result));
  82
  83  private:
  84   virtual ~MockAudioRendererHost() {
  85     // Make sure all audio streams have been deleted.
  86     EXPECT_TRUE(audio_entries_.empty());
  87   }
  88
  89   // This method is used to dispatch IPC messages to the renderer. We intercept
  90   // these messages here and dispatch to our mock methods to verify the
  91   // conversation between this object and the renderer.
  92   virtual bool Send(IPC::Message* message) {
  93     CHECK(message);
  94
  95     // In this method we dispatch the messages to the according handlers as if
  96     // we are the renderer.
  97     bool handled = true;
  98     IPC_BEGIN_MESSAGE_MAP(MockAudioRendererHost, *message)
  99       IPC_MESSAGE_HANDLER(AudioMsg_NotifyStreamCreated,
 100                           OnNotifyStreamCreated)
 101       IPC_MESSAGE_HANDLER(AudioMsg_NotifyStreamStateChanged,
 102                           OnNotifyStreamStateChanged)
 103       IPC_MESSAGE_HANDLER(AudioMsg_NotifyOutputDeviceSwitched,
 104                           OnNotifyOutputDeviceSwitched)
 105       IPC_MESSAGE_UNHANDLED(handled = false)
 106     IPC_END_MESSAGE_MAP()
 107     EXPECT_TRUE(handled);
 108
 109     delete message;
 110     return true;
 111   }
 112
 113   void OnNotifyStreamCreated(
 114       int stream_id, base::SharedMemoryHandle handle,
 115       base::SyncSocket::TransitDescriptor socket_descriptor, uint32 length) {
 116     // Maps the shared memory.
 117     shared_memory_.reset(new base::SharedMemory(handle, false));
 118     CHECK(shared_memory_->Map(length));
 119     CHECK(shared_memory_->memory());
 120     shared_memory_length_ = length;
 121
 122     // Create the SyncSocket using the handle.
 123     base::SyncSocket::Handle sync_socket_handle =
 124         base::SyncSocket::UnwrapHandle(socket_descriptor);
 125     sync_socket_.reset(new base::SyncSocket(sync_socket_handle));
 126
 127     // And then delegate the call to the mock method.
 128     OnStreamCreated(stream_id, length);
 129   }
 130
 131   void OnNotifyStreamStateChanged(int stream_id,
 132                                   media::AudioOutputIPCDelegate::State state) {
 133     switch (state) {
 134       case media::AudioOutputIPCDelegate::kPlaying:
 135         OnStreamPlaying(stream_id);
 136         break;
 137       case media::AudioOutputIPCDelegate::kPaused:
 138         OnStreamPaused(stream_id);
 139         break;
 140       case media::AudioOutputIPCDelegate::kError:
 141         OnStreamError(stream_id);
 142         break;
 143       default:
 144         FAIL() << "Unknown stream state";
 145         break;
 146     }
 147   }
 148
 149   void OnNotifyOutputDeviceSwitched(int stream_id,
 150                                     int request_id,
 151                                     media::SwitchOutputDeviceResult result) {
 152     switch (result) {
 153       case media::SWITCH_OUTPUT_DEVICE_RESULT_SUCCESS:
 154       case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_FOUND:
 155       case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_AUTHORIZED:
 156       case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_OBSOLETE:
 157       case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_SUPPORTED:
 158         OnOutputDeviceSwitched(stream_id, request_id, result);
 159         break;
 160       default:
 161         FAIL() << "Unknown SwitchOutputDevice result";
 162         break;
 163     }
 164   }
 165
 166   scoped_ptr<base::SharedMemory> shared_memory_;
 167   scoped_ptr<base::SyncSocket> sync_socket_;
 168   uint32 shared_memory_length_;
 169
 170   DISALLOW_COPY_AND_ASSIGN(MockAudioRendererHost);
 171 };
 172
 173 namespace {
 174 std::string ReturnMockSalt() {
 175   return std::string();
 176 }
 177
 178 ResourceContext::SaltCallback GetMockSaltCallback() {
 179   return base::Bind(&ReturnMockSalt);
 180 }
 181 }
 182
 183 class AudioRendererHostTest : public testing::Test {
 184  public:
 185   AudioRendererHostTest() {
 186     audio_manager_.reset(media::AudioManager::CreateForTesting());
 187     base::CommandLine::ForCurrentProcess()->AppendSwitch(
 188         switches::kUseFakeDeviceForMediaStream);
 189     media_stream_manager_.reset(new MediaStreamManager(audio_manager_.get()));
 190     host_ = new MockAudioRendererHost(audio_manager_.get(), &mirroring_manager_,
 191                                       MediaInternals::GetInstance(),
 192                                       media_stream_manager_.get(),
 193                                       GetMockSaltCallback());
 194
 195     // Simulate IPC channel connected.
 196     host_->set_peer_process_for_testing(base::Process::Current());
 197   }
 198
 199   ~AudioRendererHostTest() override {
 200     // Simulate closing the IPC channel and give the audio thread time to close
 201     // the underlying streams.
 202     host_->OnChannelClosing();
 203     SyncWithAudioThread();
 204
 205     // Release the reference to the mock object.  The object will be destructed
 206     // on message_loop_.
 207     host_ = NULL;
 208   }
 209
 210  protected:
 211   void Create(bool unified_stream) {
 212     EXPECT_CALL(*host_.get(), OnStreamCreated(kStreamId, _));
 213
 214     EXPECT_CALL(mirroring_manager_,
 215                 AddDiverter(kRenderProcessId, kRenderFrameId, NotNull()))
 216         .RetiresOnSaturation();
 217
 218     // Send a create stream message to the audio output stream and wait until
 219     // we receive the created message.
 220     int session_id;
 221     media::AudioParameters params;
 222     if (unified_stream) {
 223       // Use AudioInputDeviceManager::kFakeOpenSessionId as the session id to
 224       // pass the permission check.
 225       session_id = AudioInputDeviceManager::kFakeOpenSessionId;
 226       params = media::AudioParameters(
 227           media::AudioParameters::AUDIO_FAKE,
 228           media::CHANNEL_LAYOUT_STEREO,
 229           media::AudioParameters::kAudioCDSampleRate, 16,
 230           media::AudioParameters::kAudioCDSampleRate / 10,
 231           media::AudioParameters::NO_EFFECTS);
 232     } else {
 233       session_id = 0;
 234       params = media::AudioParameters(
 235           media::AudioParameters::AUDIO_FAKE,
 236           media::CHANNEL_LAYOUT_STEREO,
 237           media::AudioParameters::kAudioCDSampleRate, 16,
 238           media::AudioParameters::kAudioCDSampleRate / 10);
 239     }
 240     host_->OnCreateStream(kStreamId, kRenderFrameId, session_id, params);
 241
 242     // At some point in the future, a corresponding RemoveDiverter() call must
 243     // be made.
 244     EXPECT_CALL(mirroring_manager_, RemoveDiverter(NotNull()))
 245         .RetiresOnSaturation();
 246     SyncWithAudioThread();
 247   }
 248
 249   void Close() {
 250     // Send a message to AudioRendererHost to tell it we want to close the
 251     // stream.
 252     host_->OnCloseStream(kStreamId);
 253     SyncWithAudioThread();
 254   }
 255
 256   void Play() {
 257     EXPECT_CALL(*host_.get(), OnStreamPlaying(kStreamId));
 258     host_->OnPlayStream(kStreamId);
 259     SyncWithAudioThread();
 260   }
 261
 262   void Pause() {
 263     EXPECT_CALL(*host_.get(), OnStreamPaused(kStreamId));
 264     host_->OnPauseStream(kStreamId);
 265     SyncWithAudioThread();
 266   }
 267
 268   void SetVolume(double volume) {
 269     host_->OnSetVolume(kStreamId, volume);
 270     SyncWithAudioThread();
 271   }
 272
 273   void SwitchOutputDevice(int stream_id,
 274                           std::string device_id,
 275                           media::SwitchOutputDeviceResult expected_result) {
 276     EXPECT_CALL(*host_.get(),
 277                 OnOutputDeviceSwitched(stream_id, kSwitchOutputDeviceRequestId,
 278                                        expected_result));
 279     host_->OnSwitchOutputDevice(stream_id, kRenderFrameId, device_id,
 280                                 kSecurityOrigin, kSwitchOutputDeviceRequestId);
 281     SyncWithAudioThread();
 282   }
 283
 284   void SimulateError() {
 285     EXPECT_EQ(1u, host_->audio_entries_.size())
 286         << "Calls Create() before calling this method";
 287
 288     // Expect an error signal sent through IPC.
 289     EXPECT_CALL(*host_.get(), OnStreamError(kStreamId));
 290
 291     // Simulate an error sent from the audio device.
 292     host_->ReportErrorAndClose(kStreamId);
 293     SyncWithAudioThread();
 294
 295     // Expect the audio stream record is removed.
 296     EXPECT_EQ(0u, host_->audio_entries_.size());
 297   }
 298
 299   // SyncWithAudioThread() waits until all pending tasks on the audio thread
 300   // are executed while also processing pending task in message_loop_ on the
 301   // current thread. It is used to synchronize with the audio thread when we are
 302   // closing an audio stream.
 303   void SyncWithAudioThread() {
 304     base::RunLoop().RunUntilIdle();
 305
 306     base::RunLoop run_loop;
 307     audio_manager_->GetTaskRunner()->PostTask(
 308         FROM_HERE, media::BindToCurrentLoop(run_loop.QuitClosure()));
 309     run_loop.Run();
 310   }
 311
 312  private:
 313   // MediaStreamManager uses a DestructionObserver, so it must outlive the
 314   // TestBrowserThreadBundle.
 315   scoped_ptr<MediaStreamManager> media_stream_manager_;
 316   TestBrowserThreadBundle thread_bundle_;
 317   scoped_ptr<media::AudioManager> audio_manager_;
 318   MockAudioMirroringManager mirroring_manager_;
 319   scoped_refptr<MockAudioRendererHost> host_;
 320
 321   DISALLOW_COPY_AND_ASSIGN(AudioRendererHostTest);
 322 };
 323
 324 TEST_F(AudioRendererHostTest, CreateAndClose) {
 325   Create(false);
 326   Close();
 327 }
 328
 329 // Simulate the case where a stream is not properly closed.
 330 TEST_F(AudioRendererHostTest, CreateAndShutdown) {
 331   Create(false);
 332 }
 333
 334 TEST_F(AudioRendererHostTest, CreatePlayAndClose) {
 335   Create(false);
 336   Play();
 337   Close();
 338 }
 339
 340 TEST_F(AudioRendererHostTest, CreatePlayPauseAndClose) {
 341   Create(false);
 342   Play();
 343   Pause();
 344   Close();
 345 }
 346
 347 TEST_F(AudioRendererHostTest, SetVolume) {
 348   Create(false);
 349   SetVolume(0.5);
 350   Play();
 351   Pause();
 352   Close();
 353 }
 354
 355 TEST_F(AudioRendererHostTest, SwitchOutputDevice) {
 356   Create(false);
 357   SwitchOutputDevice(kStreamId, kDefaultDeviceID,
 358                      media::SWITCH_OUTPUT_DEVICE_RESULT_SUCCESS);
 359   Close();
 360 }
 361
 362 TEST_F(AudioRendererHostTest, SwitchOutputDeviceNotAuthorized) {
 363   Create(false);
 364   SwitchOutputDevice(kStreamId, kBadDeviceID,
 365                      media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_AUTHORIZED);
 366   Close();
 367 }
 368
 369 TEST_F(AudioRendererHostTest, SwitchOutputDeviceNoStream) {
 370   Create(false);
 371   SwitchOutputDevice(kBadStreamId, kDefaultDeviceID,
 372                      media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_OBSOLETE);
 373   Close();
 374 }
 375
 376 // Simulate the case where a stream is not properly closed.
 377 TEST_F(AudioRendererHostTest, CreatePlayAndShutdown) {
 378   Create(false);
 379   Play();
 380 }
 381
 382 // Simulate the case where a stream is not properly closed.
 383 TEST_F(AudioRendererHostTest, CreatePlayPauseAndShutdown) {
 384   Create(false);
 385   Play();
 386   Pause();
 387 }
 388
 389 TEST_F(AudioRendererHostTest, SimulateError) {
 390   Create(false);
 391   Play();
 392   SimulateError();
 393 }
 394
 395 // Simulate the case when an error is generated on the browser process,
 396 // the audio device is closed but the render process try to close the
 397 // audio stream again.
 398 TEST_F(AudioRendererHostTest, SimulateErrorAndClose) {
 399   Create(false);
 400   Play();
 401   SimulateError();
 402   Close();
 403 }
 404
 405 TEST_F(AudioRendererHostTest, CreateUnifiedStreamAndClose) {
 406   Create(true);
 407   Close();
 408 }
 409
 410 // TODO(hclam): Add tests for data conversation in low latency mode.
 411
 412 }  // namespace content