First step towards moving AudioDevice from content/ to media/audio.

content/renderer/pepper/pepper_platform_audio_input_impl.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.
 
 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_INPUT_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_INPUT_IMPL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 10 matching lines @@
 
 namespace content {
 
 class PepperPluginDelegateImpl;
 
 // PepperPlatformAudioInputImpl is operated on two threads: the main thread (the
 // thread on which objects are created) and the I/O thread. All public methods,
 // except the destructor, must be called on the main thread. The notifications
 // to the users of this class (via the PlatformAudioInputClient interface) are
 // also sent on the main thread. Internally, this class sends audio input IPC
-// messages and receives AudioInputMessageFilter::Delegate notifications on the
+// messages and receives media::AudioInputDeviceIPCDelegate notifications on the
 // I/O thread.
 
 class PepperPlatformAudioInputImpl
     : public webkit::ppapi::PluginDelegate::PlatformAudioInput,
-      public AudioInputMessageFilter::Delegate,
+      public media::AudioInputDeviceIPCDelegate,
       public base::RefCountedThreadSafe<PepperPlatformAudioInputImpl> {
  public:
   // Factory function, returns NULL on failure. StreamCreated() will be called
   // when the stream is created.
   static PepperPlatformAudioInputImpl* Create(
       const base::WeakPtr<PepperPluginDelegateImpl>& plugin_delegate,
       const std::string& device_id,
       int sample_rate,
       int frames_per_buffer,
       webkit::ppapi::PluginDelegate::PlatformAudioInputClient* client);
 
   // PlatformAudioInput implementation (called on main thread).
   virtual void StartCapture() OVERRIDE;
   virtual void StopCapture() OVERRIDE;
   virtual void ShutDown() OVERRIDE;
 
-  // AudioInputMessageFilter::Delegate.
+  // media::AudioInputDeviceIPCDelegate.
   virtual void OnStreamCreated(base::SharedMemoryHandle handle,
                                base::SyncSocket::Handle socket_handle,
                                uint32 length) OVERRIDE;
   virtual void OnVolume(double volume) OVERRIDE;
-  virtual void OnStateChanged(AudioStreamState state) OVERRIDE;
+  virtual void OnStateChanged(
+      media::AudioInputDeviceIPCDelegate::State state) OVERRIDE;
   virtual void OnDeviceReady(const std::string&) OVERRIDE;
+  virtual void OnIPCClosed() OVERRIDE;
 
  protected:
   virtual ~PepperPlatformAudioInputImpl();
 
  private:
   friend class base::RefCountedThreadSafe<PepperPlatformAudioInputImpl>;
 
   PepperPlatformAudioInputImpl();
 
   bool Initialize(
@@ skipping 12 matching lines @@
   void OnDeviceOpened(int request_id,
                       bool succeeded,
                       const std::string& label);
   void CloseDevice();
   void NotifyStreamCreationFailed();
 
   // The client to notify when the stream is created. THIS MUST ONLY BE
   // ACCESSED ON THE MAIN THREAD.
   webkit::ppapi::PluginDelegate::PlatformAudioInputClient* client_;
 
-  // MessageFilter used to send/receive IPC. THIS MUST ONLY BE ACCESSED ON THE
+  // Used to send/receive IPC. THIS MUST ONLY BE ACCESSED ON THE
   // I/O thread except to send messages and get the message loop.
-  scoped_refptr<AudioInputMessageFilter> filter_;
+  media::AudioInputDeviceIPC* ipc_;
 
   // Our ID on the MessageFilter. THIS MUST ONLY BE ACCESSED ON THE I/O THREAD
   // or else you could race with the initialize function which sets it.
   int32 stream_id_;
 
   base::MessageLoopProxy* main_message_loop_proxy_;
 
   // THIS MUST ONLY BE ACCESSED ON THE MAIN THREAD.
   base::WeakPtr<PepperPluginDelegateImpl> plugin_delegate_;
 
   // The unique ID to identify the opened device. THIS MUST ONLY BE ACCESSED ON
   // THE MAIN THREAD.
   std::string label_;
 
   // Whether ShutDownOnIOThread() has been called. THIS MUST ONLY BE ACCESSED ON
   // THE I/O THREAD.
   bool shutdown_called_;
 
   // Initialized on the main thread and accessed on the I/O thread afterwards.
   media::AudioParameters params_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPlatformAudioInputImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_INPUT_IMPL_H_