media: Make GpuMemoryBuffers VideoFrame copies asynchronous.

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 "media/base/media_export.h"
 #include "media/filters/context_3d.h"
 
 namespace base {
 class SingleThreadTaskRunner;
+class TaskRunner;
 }
 
 namespace blink {
 class WebContentDecryptionModule;
 class WebMediaPlayerClient;
 }
 
 namespace media {
 
 class AudioRendererSink;
 class MediaLog;
 class MediaPermission;
 
 // Holds parameters for constructing WebMediaPlayerImpl without having
 // to plumb arguments through various abstraction layers.
 class MEDIA_EXPORT WebMediaPlayerParams {
  public:
   typedef base::Callback<void(const base::Closure&)> DeferLoadCB;
   typedef base::Callback<Context3D()> Context3DCB;
 
   // |defer_load_cb|, |audio_renderer_sink|, |compositor_task_runner|, and
   // |context_3d_cb| may be null.
   WebMediaPlayerParams(
       const DeferLoadCB& defer_load_cb,
       const scoped_refptr<AudioRendererSink>& audio_renderer_sink,
       const scoped_refptr<MediaLog>& media_log,
       const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+      const scoped_refptr<base::TaskRunner>& worker_task_runner,
       const scoped_refptr<base::SingleThreadTaskRunner>& compositor_task_runner,
       const Context3DCB& context_3d,
       MediaPermission* media_permission,
       blink::WebContentDecryptionModule* initial_cdm);
 
   ~WebMediaPlayerParams();
 
   DeferLoadCB defer_load_cb() const { return defer_load_cb_; }
 
   const scoped_refptr<AudioRendererSink>& audio_renderer_sink() const {
     return audio_renderer_sink_;
   }
 
   const scoped_refptr<MediaLog>& media_log() const {
     return media_log_;
   }
 
   const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner() const {
     return media_task_runner_;
   }
 
+  const scoped_refptr<base::TaskRunner> worker_task_runner() const {
+    return worker_task_runner_;
+  }
+
   const scoped_refptr<base::SingleThreadTaskRunner>& compositor_task_runner()
       const {
     return compositor_task_runner_;
   }
 
   Context3DCB context_3d_cb() const { return context_3d_cb_; }
 
   MediaPermission* media_permission() const { return media_permission_; }
 
   blink::WebContentDecryptionModule* initial_cdm() const {
     return initial_cdm_;
   }
 
 
  private:
   DeferLoadCB defer_load_cb_;
   scoped_refptr<AudioRendererSink> audio_renderer_sink_;
   scoped_refptr<MediaLog> media_log_;
   scoped_refptr<base::SingleThreadTaskRunner> media_task_runner_;
+  scoped_refptr<base::TaskRunner> worker_task_runner_;
   scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner_;
   Context3DCB context_3d_cb_;
 
   // TODO(xhwang): Remove after prefixed EME API support is removed.
   MediaPermission* media_permission_;
   blink::WebContentDecryptionModule* initial_cdm_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(WebMediaPlayerParams);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BLINK_WEBMEDIAPLAYER_PARAMS_H_