Add IPC interface for switching the audio output device for a given audio stream in the browser.

content/browser/renderer_host/media/audio_renderer_host_unittest.cc

 // 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 "base/bind.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "base/sync_socket.h"
 #include "content/browser/media/capture/audio_mirroring_manager.h"
@@ skipping 13 matching lines @@
 
 using ::testing::_;
 using ::testing::Assign;
 using ::testing::DoAll;
 using ::testing::NotNull;
 
 namespace {
 const int kRenderProcessId = 1;
 const int kRenderFrameId = 5;
 const int kStreamId = 50;
+const int kBadStreamId = 99;
+const int kSwitchOutputDeviceRequestId = 1;
+const GURL kSecurityOrigin("http://localhost");
+const std::string kDefaultDeviceID = "";
+const std::string kBadDeviceID = "bad-device-id";
 }  // namespace
 
 namespace content {
 
 class MockAudioMirroringManager : public AudioMirroringManager {
  public:
   MockAudioMirroringManager() {}
   virtual ~MockAudioMirroringManager() {}
 
   MOCK_METHOD3(AddDiverter,
                void(int render_process_id,
                     int render_frame_id,
                     Diverter* diverter));
   MOCK_METHOD1(RemoveDiverter, void(Diverter* diverter));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockAudioMirroringManager);
 };
 
 class MockAudioRendererHost : public AudioRendererHost {
  public:
   MockAudioRendererHost(media::AudioManager* audio_manager,
                         AudioMirroringManager* mirroring_manager,
                         MediaInternals* media_internals,
-                        MediaStreamManager* media_stream_manager)
+                        MediaStreamManager* media_stream_manager,
+                        const ResourceContext::SaltCallback& salt_callback)
       : AudioRendererHost(kRenderProcessId,
                           audio_manager,
                           mirroring_manager,
                           media_internals,
-                          media_stream_manager),
+                          media_stream_manager,
+                          salt_callback),
         shared_memory_length_(0) {}
 
   // A list of mock methods.
   MOCK_METHOD2(OnStreamCreated, void(int stream_id, int length));
   MOCK_METHOD1(OnStreamPlaying, void(int stream_id));
   MOCK_METHOD1(OnStreamPaused, void(int stream_id));
   MOCK_METHOD1(OnStreamError, void(int stream_id));
+  MOCK_METHOD3(OnOutputDeviceSwitched,
+               void(int stream_id,
+                    int request_id,
+                    media::SwitchOutputDeviceResult result));
 
  private:
   virtual ~MockAudioRendererHost() {
     // Make sure all audio streams have been deleted.
     EXPECT_TRUE(audio_entries_.empty());
   }
 
   // This method is used to dispatch IPC messages to the renderer. We intercept
   // these messages here and dispatch to our mock methods to verify the
   // conversation between this object and the renderer.
   virtual bool Send(IPC::Message* message) {
     CHECK(message);
 
     // In this method we dispatch the messages to the according handlers as if
     // we are the renderer.
     bool handled = true;
     IPC_BEGIN_MESSAGE_MAP(MockAudioRendererHost, *message)
       IPC_MESSAGE_HANDLER(AudioMsg_NotifyStreamCreated,
                           OnNotifyStreamCreated)
       IPC_MESSAGE_HANDLER(AudioMsg_NotifyStreamStateChanged,
                           OnNotifyStreamStateChanged)
+      IPC_MESSAGE_HANDLER(AudioMsg_NotifyOutputDeviceSwitched,
+                          OnNotifyOutputDeviceSwitched)
       IPC_MESSAGE_UNHANDLED(handled = false)
     IPC_END_MESSAGE_MAP()
     EXPECT_TRUE(handled);
 
     delete message;
     return true;
   }
 
   void OnNotifyStreamCreated(
       int stream_id, base::SharedMemoryHandle handle,
@@ skipping 24 matching lines @@
         break;
       case media::AudioOutputIPCDelegate::kError:
         OnStreamError(stream_id);
         break;
       default:
         FAIL() << "Unknown stream state";
         break;
     }
   }
 
+  void OnNotifyOutputDeviceSwitched(int stream_id,
+                                    int request_id,
+                                    media::SwitchOutputDeviceResult result) {
+    switch (result) {
+      case media::SWITCH_OUTPUT_DEVICE_RESULT_SUCCESS:
+      case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_FOUND:
+      case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_AUTHORIZED:
+      case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_OBSOLETE:
+      case media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_SUPPORTED:
+        OnOutputDeviceSwitched(stream_id, request_id, result);
+        break;
+      default:
+        FAIL() << "Unknown SwitchOutputDevice result";
+        break;
+    }
+  }
+
   scoped_ptr<base::SharedMemory> shared_memory_;
   scoped_ptr<base::SyncSocket> sync_socket_;
   uint32 shared_memory_length_;
 
   DISALLOW_COPY_AND_ASSIGN(MockAudioRendererHost);
 };
 
+namespace {
+std::string ReturnMockSalt() {
+  return std::string();
+}
+
+ResourceContext::SaltCallback GetMockSaltCallback() {
+  return base::Bind(&ReturnMockSalt);
+}
+}
+
 class AudioRendererHostTest : public testing::Test {
  public:
   AudioRendererHostTest() {
     audio_manager_.reset(media::AudioManager::CreateForTesting());
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kUseFakeDeviceForMediaStream);
     media_stream_manager_.reset(new MediaStreamManager(audio_manager_.get()));
-    host_ = new MockAudioRendererHost(audio_manager_.get(),
-                                      &mirroring_manager_,
+    host_ = new MockAudioRendererHost(audio_manager_.get(), &mirroring_manager_,
                                       MediaInternals::GetInstance(),
-                                      media_stream_manager_.get());
+                                      media_stream_manager_.get(),
+                                      GetMockSaltCallback());
 
     // Simulate IPC channel connected.
     host_->set_peer_process_for_testing(base::Process::Current());
   }
 
   ~AudioRendererHostTest() override {
     // Simulate closing the IPC channel and give the audio thread time to close
     // the underlying streams.
     host_->OnChannelClosing();
     SyncWithAudioThread();
@@ skipping 59 matching lines @@
     EXPECT_CALL(*host_.get(), OnStreamPaused(kStreamId));
     host_->OnPauseStream(kStreamId);
     SyncWithAudioThread();
   }
 
   void SetVolume(double volume) {
     host_->OnSetVolume(kStreamId, volume);
     SyncWithAudioThread();
   }
 
+  void SwitchOutputDevice(int stream_id,
+                          std::string device_id,
+                          media::SwitchOutputDeviceResult expected_result) {
+    EXPECT_CALL(*host_.get(),
+                OnOutputDeviceSwitched(stream_id, kSwitchOutputDeviceRequestId,
+                                       expected_result));
+    host_->OnSwitchOutputDevice(stream_id, kRenderFrameId, device_id,
+                                kSecurityOrigin, kSwitchOutputDeviceRequestId);
+    SyncWithAudioThread();
+  }
+
   void SimulateError() {
     EXPECT_EQ(1u, host_->audio_entries_.size())
         << "Calls Create() before calling this method";
 
     // Expect an error signal sent through IPC.
     EXPECT_CALL(*host_.get(), OnStreamError(kStreamId));
 
     // Simulate an error sent from the audio device.
     host_->ReportErrorAndClose(kStreamId);
     SyncWithAudioThread();
@@ skipping 51 matching lines @@
 }
 
 TEST_F(AudioRendererHostTest, SetVolume) {
   Create(false);
   SetVolume(0.5);
   Play();
   Pause();
   Close();
 }
 
+TEST_F(AudioRendererHostTest, SwitchOutputDevice) {
+  Create(false);
+  SwitchOutputDevice(kStreamId, kDefaultDeviceID,
+                     media::SWITCH_OUTPUT_DEVICE_RESULT_SUCCESS);
+  Close();
+}
+
+TEST_F(AudioRendererHostTest, SwitchOutputDeviceNotAuthorized) {
+  Create(false);
+  SwitchOutputDevice(kStreamId, kBadDeviceID,
+                     media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_NOT_AUTHORIZED);
+  Close();
+}
+
+TEST_F(AudioRendererHostTest, SwitchOutputDeviceNoStream) {
+  Create(false);
+  SwitchOutputDevice(kBadStreamId, kDefaultDeviceID,
+                     media::SWITCH_OUTPUT_DEVICE_RESULT_ERROR_OBSOLETE);
+  Close();
+}
+
 // Simulate the case where a stream is not properly closed.
 TEST_F(AudioRendererHostTest, CreatePlayAndShutdown) {
   Create(false);
   Play();
 }
 
 // Simulate the case where a stream is not properly closed.
 TEST_F(AudioRendererHostTest, CreatePlayPauseAndShutdown) {
   Create(false);
   Play();
@@ skipping 17 matching lines @@
 }
 
 TEST_F(AudioRendererHostTest, CreateUnifiedStreamAndClose) {
   Create(true);
   Close();
 }
 
 // TODO(hclam): Add tests for data conversation in low latency mode.
 
 }  // namespace content