Mojofication of the Chrome Audio Rendering Prototype

content/renderer/pepper/pepper_platform_audio_output.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_OUTPUT_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_OUTPUT_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "content/common/media/audio_output.mojom.h"
 #include "media/audio/audio_output_ipc.h"
 
 namespace media {
 class AudioParameters;
 }
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace content {
 class AudioHelper;
 
 class PepperPlatformAudioOutput
     : public media::AudioOutputIPCDelegate,
       public base::RefCountedThreadSafe<PepperPlatformAudioOutput> {
  public:
   // Factory function, returns NULL on failure. StreamCreated() will be called
   // when the stream is created.
   static PepperPlatformAudioOutput* Create(int sample_rate,
                                            int frames_per_buffer,
                                            int source_render_frame_id,
                                            AudioHelper* client);
 
+  media::AudioOutputIPC* getIPC() override;
+
   // The following three methods are all called on main thread.
 
   // Starts the playback. Returns false on error or if called before the
   // stream is created or after the stream is closed.
   bool StartPlayback();
 
   // Stops the playback. Returns false on error or if called before the stream
   // is created or after the stream is closed.
   bool StopPlayback();
 
   // Closes the stream. Make sure to call this before the object is
   // destructed.
   void ShutDown();
 
   // media::AudioOutputIPCDelegate implementation.
   void OnStateChanged(media::AudioOutputIPCDelegateState state) override;
   void OnDeviceAuthorized(media::OutputDeviceStatus device_status,
                           const media::AudioParameters& output_params) override;
-  void OnStreamCreated(base::SharedMemoryHandle handle,
+  void OnStreamCreated(mojom::AudioOutputStreamPtr* stream,
+                       base::SharedMemoryHandle handle,
                        base::SyncSocket::Handle socket_handle,
                        int length) override;
   void OnIPCClosed() override;
 
  protected:
   ~PepperPlatformAudioOutput() override;
 
  private:
   friend class base::RefCountedThreadSafe<PepperPlatformAudioOutput>;
 
   PepperPlatformAudioOutput();
 
   bool Initialize(int sample_rate,
                   int frames_per_buffer,
                   int source_render_frame_id,
                   AudioHelper* client);
 
   // I/O thread backends to above functions.
   void InitializeOnIOThread(const media::AudioParameters& params);
   void StartPlaybackOnIOThread();
   void StopPlaybackOnIOThread();
   void ShutDownOnIOThread();
 
   // The client to notify when the stream is created. THIS MUST ONLY BE
   // ACCESSED ON THE MAIN THREAD.
   AudioHelper* client_;
 
+  mojom::AudioOutputStreamPtr* stream_;
+
   // 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_ptr<media::AudioOutputIPC> ipc_;
 
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPlatformAudioOutput);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_AUDIO_OUTPUT_H_