webkit/renderer/compositor_bindings/web_external_bitmap_impl.h

   1 // Copyright 2013 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 WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_BITMAP_IMPL_H_
   6 #define WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_BITMAP_IMPL_H_
   7
   8 #include "base/bind.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "third_party/WebKit/public/platform/WebExternalBitmap.h"
  11 #include "webkit/renderer/compositor_bindings/webkit_compositor_bindings_export.h"
  12
  13 namespace base {
  14 class SharedMemory;
  15 }
  16
  17 namespace webkit {
  18
  19 typedef scoped_ptr<base::SharedMemory> (*SharedMemoryAllocationFunction)(
  20     size_t);
  21
  22 // Sets the function that this will use to allocate shared memory.
  23 WEBKIT_COMPOSITOR_BINDINGS_EXPORT void SetSharedMemoryAllocationFunction(
  24     SharedMemoryAllocationFunction);
  25
  26 class WebExternalBitmapImpl : public blink::WebExternalBitmap {
  27  public:
  28   WEBKIT_COMPOSITOR_BINDINGS_EXPORT explicit WebExternalBitmapImpl();
  29   virtual ~WebExternalBitmapImpl();
  30
  31   // blink::WebExternalBitmap implementation.
  32   virtual blink::WebSize size() OVERRIDE;
  33   virtual void setSize(blink::WebSize size) OVERRIDE;
  34   virtual uint8* pixels() OVERRIDE;
  35
  36   base::SharedMemory* shared_memory() { return shared_memory_.get(); }
  37
  38  private:
  39   scoped_ptr<base::SharedMemory> shared_memory_;
  40   blink::WebSize size_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(WebExternalBitmapImpl);
  43 };
  44
  45 }  // namespace webkit
  46
  47 #endif  // WEBKIT_RENDERER_COMPOSITOR_BINDINGS_WEB_EXTERNAL_BITMAP_IMPL_H_