cc/blink/web_external_bitmap_impl.h

   1 // Copyright 2014 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 CC_BLINK_WEB_EXTERNAL_BITMAP_IMPL_H_
   6 #define CC_BLINK_WEB_EXTERNAL_BITMAP_IMPL_H_
   7
   8 #include "base/bind.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "cc/blink/cc_blink_export.h"
  11 #include "third_party/WebKit/public/platform/WebExternalBitmap.h"
  12
  13 namespace base {
  14 class SharedMemory;
  15 }
  16
  17 namespace cc_blink {
  18
  19 typedef scoped_ptr<base::SharedMemory>(*SharedMemoryAllocationFunction)(size_t);
  20
  21 // Sets the function that this will use to allocate shared memory.
  22 CC_BLINK_EXPORT void SetSharedMemoryAllocationFunction(
  23     SharedMemoryAllocationFunction);
  24
  25 class WebExternalBitmapImpl : public blink::WebExternalBitmap {
  26  public:
  27   CC_BLINK_EXPORT explicit WebExternalBitmapImpl();
  28   virtual ~WebExternalBitmapImpl();
  29
  30   // blink::WebExternalBitmap implementation.
  31   blink::WebSize size() override;
  32   void setSize(blink::WebSize size) override;
  33   uint8* pixels() override;
  34
  35   base::SharedMemory* shared_memory() { return shared_memory_.get(); }
  36
  37  private:
  38   scoped_ptr<base::SharedMemory> shared_memory_;
  39   blink::WebSize size_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(WebExternalBitmapImpl);
  42 };
  43
  44 }  // namespace cc_blink
  45
  46 #endif  // CC_BLINK_WEB_EXTERNAL_BITMAP_IMPL_H_