Implementing AudioOutputDevice authorization timeout

media/audio/audio_output_device.h

 // 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.
 //
 // Audio rendering unit utilizing audio output stream provided by browser
 // process through IPC.
 //
 // Relationship of classes.
 //
 //  AudioOutputController                AudioOutputDevice
@@ skipping 59 matching lines @@
 #include "base/memory/shared_memory.h"
 #include "base/synchronization/waitable_event.h"
 #include "media/audio/audio_device_thread.h"
 #include "media/audio/audio_output_ipc.h"
 #include "media/audio/scoped_task_runner_observer.h"
 #include "media/base/audio_parameters.h"
 #include "media/base/audio_renderer_sink.h"
 #include "media/base/media_export.h"
 #include "media/base/output_device_info.h"
 
+namespace base {
+class OneShotTimer;
+}
+
 namespace media {
 
 class MEDIA_EXPORT AudioOutputDevice
     : NON_EXPORTED_BASE(public AudioRendererSink),
       NON_EXPORTED_BASE(public AudioOutputIPCDelegate),
       NON_EXPORTED_BASE(public ScopedTaskRunnerObserver) {
  public:
   // NOTE: Clients must call Initialize() before using.
   AudioOutputDevice(
       std::unique_ptr<AudioOutputIPC> ipc,
       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
       int session_id,
       const std::string& device_id,
-      const url::Origin& security_origin);
+      const url::Origin& security_origin,
+      base::TimeDelta authorization_timeout);
 
   // Request authorization to use the device specified in the constructor.
   void RequestDeviceAuthorization();
 
   // AudioRendererSink implementation.
   void Initialize(const AudioParameters& params,
                   RenderCallback* callback) override;
   void Start() override;
   void Stop() override;
   void Play() override;
@@ skipping 34 matching lines @@
   // The following methods are tasks posted on the IO thread that need to
   // be executed on that thread.  They use AudioOutputIPC to send IPC messages
   // upon state changes.
   void RequestDeviceAuthorizationOnIOThread();
   void CreateStreamOnIOThread(const AudioParameters& params);
   void PlayOnIOThread();
   void PauseOnIOThread();
   void ShutDownOnIOThread();
   void SetVolumeOnIOThread(double volume);
 
+  // Process device authorization result on the IO thread.
+  void ProcessDeviceAuthorizationOnIOThread(
+      OutputDeviceStatus device_status,
+      const media::AudioParameters& output_params,
+      const std::string& matched_device_id,
+      bool timed_out);
+
   // base::MessageLoop::DestructionObserver implementation for the IO loop.
   // If the IO loop dies before we do, we shut down the audio thread from here.
   void WillDestroyCurrentMessageLoop() override;
 
   AudioParameters audio_parameters_;
 
   RenderCallback* callback_;
 
   // A pointer to the IPC layer that takes care of sending requests over to
   // the AudioRendererHost.  Only valid when state_ != IPC_CLOSED and must only
@@ skipping 36 matching lines @@
   // |callback_|.
   //
   // TODO(scherkus): Replace this by changing AudioRendererSink to either accept
   // the callback via Start(). See http://crbug.com/151051 for details.
   bool stopping_hack_;
 
   base::WaitableEvent did_receive_auth_;
   AudioParameters output_params_;
   OutputDeviceStatus device_status_;
 
+  const base::TimeDelta auth_timeout_;
+  std::unique_ptr<base::OneShotTimer> auth_timeout_action_;
+
   DISALLOW_COPY_AND_ASSIGN(AudioOutputDevice);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_AUDIO_AUDIO_OUTPUT_DEVICE_H_