media: Add ServiceFactory mojo interface and implementation.

media/mojo/services/mojo_renderer_service.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_RENDERER_SERVICE_H_
 #define MEDIA_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/buffering_state.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline_status.h"
 #include "media/mojo/interfaces/media_renderer.mojom.h"
+#include "media/mojo/services/mojo_cdm_service_context.h"
 #include "third_party/mojo/src/mojo/public/cpp/bindings/strong_binding.h"
 
 namespace mojo {
 class ApplicationConnection;
 }
 
 namespace media {
 
 class AudioRendererSink;
 class DemuxerStreamProviderShim;
 class CdmContextProvider;
 class MediaLog;
 class Renderer;
 class RendererFactory;
 class VideoRendererSink;
 
 // A interfaces::MediaRenderer implementation that uses media::AudioRenderer to
 // decode and render audio to a sink obtained from the ApplicationConnection.
 class MEDIA_EXPORT MojoRendererService
     : NON_EXPORTED_BASE(interfaces::MediaRenderer) {
  public:
   // |cdm_context_provider| can be used to find the CdmContext to support
   // encrypted media. If null, encrypted media is not supported.
   MojoRendererService(
-      CdmContextProvider* cdm_context_provider,
+      base::WeakPtr<CdmContextProvider> cdm_context_provider,
       RendererFactory* renderer_factory,
       const scoped_refptr<MediaLog>& media_log,
       mojo::InterfaceRequest<interfaces::MediaRenderer> request);
   ~MojoRendererService() final;
 
   // interfaces::MediaRenderer implementation.
   void Initialize(interfaces::MediaRendererClientPtr client,
                   interfaces::DemuxerStreamPtr audio,
                   interfaces::DemuxerStreamPtr video,
                   const mojo::Callback<void(bool)>& callback) final;
@@ skipping 41 matching lines @@
   void OnError(PipelineStatus error);
 
   // Callback executed once Flush() completes.
   void OnFlushCompleted(const mojo::Closure& callback);
 
   // Callback executed once SetCdm() completes.
   void OnCdmAttached(const mojo::Callback<void(bool)>& callback, bool success);
 
   mojo::StrongBinding<interfaces::MediaRenderer> binding_;
 
-  CdmContextProvider* cdm_context_provider_;
+  base::WeakPtr<CdmContextProvider> cdm_context_provider_;
 
   State state_;
 
   // Note: |renderer_| should be destructed before these objects to avoid access
   // violation.
   scoped_ptr<DemuxerStreamProviderShim> stream_provider_;
   scoped_refptr<AudioRendererSink> audio_renderer_sink_;
   scoped_ptr<VideoRendererSink> video_renderer_sink_;
 
   scoped_ptr<Renderer> renderer_;
 
   base::RepeatingTimer<MojoRendererService> time_update_timer_;
   uint64_t last_media_time_usec_;
 
   interfaces::MediaRendererClientPtr client_;
 
   base::WeakPtr<MojoRendererService> weak_this_;
   base::WeakPtrFactory<MojoRendererService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoRendererService);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_RENDERER_SERVICE_H_