media: Support RendererFactory in MojoMediaClient.

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 "base/lazy_instance.h"
 #include "base/memory/scoped_vector.h"
 #include "base/single_thread_task_runner.h"
 #include "media/base/audio_decoder.h"
 #include "media/base/audio_hardware_config.h"
 #include "media/base/audio_renderer_sink.h"
 #include "media/base/media_log.h"
+#include "media/base/renderer_factory.h"
 #include "media/base/video_decoder.h"
 #include "media/base/video_renderer_sink.h"
 
 namespace media {
 
 // Interface class which clients will extend to override (at compile time) the
 // default configurations for mojo media services.
 class PlatformMojoMediaClient {
  public:
   virtual ~PlatformMojoMediaClient() {};
 
-  // The list of audio or video decoders for use with the AudioRenderer or
-  // VideoRenderer respectively.  Ownership of the decoders is passed to the
-  // caller.  The methods on each decoder will only be called on
-  // |media_task_runner|.  |media_log_cb| should be used to log errors or
-  // important status information.
+  // Returns the RendererFactory to be used by MojoRendererService. If returns
+  // null, a RendererImpl will be used with audio/video decoders provided in
+  // GetAudioDecoders() and GetVideoDecoders().
+  virtual scoped_ptr<RendererFactory> GetRendererFactory(
+      const scoped_refptr<MediaLog>& media_log) = 0;
+
+  // The list of audio or video decoders for use with RendererImpl when
+  // GetRendererFactory() returns null. Ownership of the decoders is passed to
+  // the caller. The methods on each decoder will only be called on
+  // |media_task_runner|. |media_log| should be used to log errors or important
+  // status information.
   virtual ScopedVector<AudioDecoder> GetAudioDecoders(
       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
-      const LogCB& media_log_cb) = 0;
+      const scoped_refptr<MediaLog>& media_log) = 0;
   virtual ScopedVector<VideoDecoder> GetVideoDecoders(
       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
-      const LogCB& media_log_cb) = 0;
+      const scoped_refptr<MediaLog>& media_log) = 0;
 
   // The output sink used for rendering audio or video respectively.
   virtual scoped_refptr<AudioRendererSink> GetAudioRendererSink() = 0;
   virtual scoped_ptr<VideoRendererSink> GetVideoRendererSink(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) = 0;
 
   // The platform's audio hardware configuration.  Note, this must remain
   // constant for the lifetime of the PlatformMojoMediaClient.
   virtual const AudioHardwareConfig& GetAudioHardwareConfig() = 0;
 };
 
 class MojoMediaClient {
  public:
   // Returns an instance of the MojoMediaClient object.  Only one instance will
   // exist per process.
   static MojoMediaClient* Get();
 
   // Copy of the PlatformMojoMediaClient interface.
+  scoped_ptr<RendererFactory> GetRendererFactory(
+      const scoped_refptr<MediaLog>& media_log);
   ScopedVector<AudioDecoder> GetAudioDecoders(
       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
-      const LogCB& media_log_cb);
+      const scoped_refptr<MediaLog>& media_log);
   ScopedVector<VideoDecoder> GetVideoDecoders(
       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
-      const LogCB& media_log_cb);
+      const scoped_refptr<MediaLog>& media_log);
   scoped_refptr<AudioRendererSink> GetAudioRendererSink();
   scoped_ptr<VideoRendererSink> GetVideoRendererSink(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
   const AudioHardwareConfig& GetAudioHardwareConfig();
 
  private:
   friend struct base::DefaultLazyInstanceTraits<MojoMediaClient>;
 
   MojoMediaClient();
   ~MojoMediaClient();
 
   scoped_ptr<PlatformMojoMediaClient> mojo_media_client_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoMediaClient);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_MEDIA_CLIENT_H_