media: Optimize HW Video to 2D Canvas copy.

media/blink/webmediaplayer_params.h

 // Copyright 2013 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_BLINK_WEBMEDIAPLAYER_PARAMS_H_
 #define MEDIA_BLINK_WEBMEDIAPLAYER_PARAMS_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
+#include "cc/output/context_provider.h"
 #include "media/base/media_export.h"
 #include "media/blink/encrypted_media_player_support.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace blink {
 class WebMediaPlayerClient;
 }
 
 namespace media {
 class AudioHardwareConfig;
 class AudioRendererSink;
 class GpuVideoAcceleratorFactories;
 class MediaLog;
 
 // Holds parameters for constructing WebMediaPlayerImpl without having
 // to plumb arguments through various abstraction layers.
 class MEDIA_EXPORT WebMediaPlayerParams {
  public:
   // Callback used to create EncryptedMediaPlayerSupport instances. This
   // callback must always return a valid EncryptedMediaPlayerSupport object.
   typedef base::Callback<scoped_ptr<EncryptedMediaPlayerSupport>(
       blink::WebMediaPlayerClient*)> EncryptedMediaPlayerSupportCreateCB;
   typedef base::Callback<void(const base::Closure&)> DeferLoadCB;
+  typedef base::Callback<cc::ContextProvider*()> ContextProviderCB;
 
   // |defer_load_cb|, |audio_renderer_sink|, and |compositor_task_runner| may be
   // null.
   WebMediaPlayerParams(
       const DeferLoadCB& defer_load_cb,
       const scoped_refptr<AudioRendererSink>& audio_renderer_sink,
       const AudioHardwareConfig& audio_hardware_config,
       const scoped_refptr<MediaLog>& media_log,
       const scoped_refptr<GpuVideoAcceleratorFactories>& gpu_factories,
       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
       const scoped_refptr<base::SingleThreadTaskRunner>& compositor_task_runner,
       const EncryptedMediaPlayerSupportCreateCB&
           encrypted_media_player_support_cb,
+      const ContextProviderCB& shared_main_thread_context_provider_cb,
       blink::WebContentDecryptionModule* initial_cdm);
 
   ~WebMediaPlayerParams();
 
-  base::Callback<void(const base::Closure&)> defer_load_cb() const {
-    return defer_load_cb_;
-  }
+  DeferLoadCB defer_load_cb() const { return defer_load_cb_; }
 
   const scoped_refptr<AudioRendererSink>& audio_renderer_sink() const {
     return audio_renderer_sink_;
   }
 
   const AudioHardwareConfig& audio_hardware_config() const {
     return audio_hardware_config_;
   }
 
   const scoped_refptr<MediaLog>& media_log() const {
@@ skipping 11 matching lines @@
   }
 
   const scoped_refptr<base::SingleThreadTaskRunner>&
   compositor_task_runner() const {
     return compositor_task_runner_;
   }
 
   scoped_ptr<EncryptedMediaPlayerSupport>
   CreateEncryptedMediaPlayerSupport(blink::WebMediaPlayerClient* client) const;
 
+  ContextProviderCB shared_main_thread_context_provider_cb() const {
+    return shared_main_thread_context_provider_cb_;
+  }
+
  private:
-  base::Callback<void(const base::Closure&)> defer_load_cb_;
+  DeferLoadCB defer_load_cb_;
   scoped_refptr<AudioRendererSink> audio_renderer_sink_;
   const AudioHardwareConfig& audio_hardware_config_;
   scoped_refptr<MediaLog> media_log_;
   scoped_refptr<GpuVideoAcceleratorFactories> gpu_factories_;
   scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner_;
   EncryptedMediaPlayerSupportCreateCB encrypted_media_player_support_cb_;
+  ContextProviderCB shared_main_thread_context_provider_cb_;
   blink::WebContentDecryptionModule* initial_cdm_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(WebMediaPlayerParams);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_PARAMS_H_