content/renderer/gpu/compositor_output_surface.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_
   6 #define CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/threading/non_thread_safe.h"
  13 #include "base/time.h"
  14 #include "third_party/WebKit/Source/Platform/chromium/public/WebCompositorOutputSurface.h"
  15
  16 namespace base {
  17   class TaskRunner;
  18 }
  19
  20 namespace IPC {
  21   class ForwardingMessageFilter;
  22   class Message;
  23   class SyncChannel;
  24 }
  25
  26 // This class can be created only on the main thread, but then becomes pinned
  27 // to a fixed thread when bindToClient is called.
  28 class CompositorOutputSurface
  29     : NON_EXPORTED_BASE(public WebKit::WebCompositorOutputSurface)
  30     , NON_EXPORTED_BASE(public base::NonThreadSafe) {
  31  public:
  32   static IPC::ForwardingMessageFilter* CreateFilter(
  33       base::TaskRunner* target_task_runner);
  34
  35   CompositorOutputSurface(int32 routing_id,
  36                           WebKit::WebGraphicsContext3D* context3d);
  37   virtual ~CompositorOutputSurface();
  38
  39   // WebCompositorOutputSurface implementation.
  40   virtual bool bindToClient(
  41       WebKit::WebCompositorOutputSurfaceClient* client) OVERRIDE;
  42   virtual const Capabilities& capabilities() const OVERRIDE;
  43   virtual WebKit::WebGraphicsContext3D* context3D() const OVERRIDE;
  44   virtual void sendFrameToParentCompositor(
  45       const WebKit::WebCompositorFrame&) OVERRIDE;
  46
  47  private:
  48   void OnMessageReceived(const IPC::Message& message);
  49   void OnUpdateVSyncParameters(
  50       base::TimeTicks timebase, base::TimeDelta interval);
  51
  52   scoped_refptr<IPC::ForwardingMessageFilter> output_surface_filter_;
  53   WebKit::WebCompositorOutputSurfaceClient* client_;
  54   int routing_id_;
  55   Capabilities capabilities_;
  56   scoped_ptr<WebKit::WebGraphicsContext3D> context3D_;
  57 };
  58
  59 #endif  // CONTENT_RENDERER_GPU_COMPOSITOR_OUTPUT_SURFACE_H_
  60