Move ownership of audio/video sinks to MojoRendererService.

media/mojo/services/mojo_media_client.h

 // Copyright 2014 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 MEDIA_MOJO_SERVICES_MOJO_MEDIA_CLIENT_H_
 #define MEDIA_MOJO_SERVICES_MOJO_MEDIA_CLIENT_H_
 
 #include <memory>
 #include <string>
 
 #include "base/memory/ref_counted.h"
 #include "media/mojo/services/media_mojo_export.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace shell {
 namespace mojom {
 class InterfaceProvider;
 }
 }
 
 namespace media {
 
 class AudioDecoder;
+class AudioRendererSink;
 class CdmFactory;
 class MediaLog;
-class Renderer;
+class RendererFactory;
 class VideoDecoder;
+class VideoRendererSink;
 
 class MEDIA_MOJO_EXPORT MojoMediaClient {
  public:
   virtual ~MojoMediaClient();
 
   // Called exactly once before any other method.
   virtual void Initialize();
 
   // Called before the host application is scheduled to quit.
   // The application message loop is still valid at this point, so all clean
   // up tasks requiring the message loop must be completed before returning.
   virtual void WillQuit();
 
   virtual std::unique_ptr<AudioDecoder> CreateAudioDecoder(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
   virtual std::unique_ptr<VideoDecoder> CreateVideoDecoder(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner);
 
-  // TODO(xhwang): Consider creating CDM directly in the client
-  // instead of creating factories. See http://crbug.com/586211
+  // Returns the output sink used for rendering audio on |audio_device_id|.
+  // May be null if the RendererFactory doesn't need an audio sink.
+  virtual scoped_refptr<AudioRendererSink> CreateAudioRendererSink(
+      const std::string& audio_device_id);
 
-  // Creates and returns a Renderer.
-  virtual std::unique_ptr<Renderer> CreateRenderer(
-      scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
-      scoped_refptr<MediaLog> media_log,
-      const std::string& audio_device_id);
+  // Returns the output sink used for rendering video.
+  // May be null if the RendererFactory doesn't need a video sink.
+  virtual std::unique_ptr<VideoRendererSink> CreateVideoRendererSink(
+      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
+
+  // Returns the RendererFactory to be used by MojoRendererService.
+  virtual std::unique_ptr<RendererFactory> CreateRendererFactory(
+      const scoped_refptr<MediaLog>& media_log);
 
   // Returns the CdmFactory to be used by MojoCdmService.
   virtual std::unique_ptr<CdmFactory> CreateCdmFactory(
       shell::mojom::InterfaceProvider* interface_provider);
 
  protected:
   MojoMediaClient();
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_MEDIA_CLIENT_H_