// Copyright 2014 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 CC_BLINK_WEB_EXTERNAL_BITMAP_IMPL_H_
#define CC_BLINK_WEB_EXTERNAL_BITMAP_IMPL_H_

#include <stdint.h>

#include <memory>

#include "base/bind.h"
#include "base/macros.h"
#include "cc/blink/cc_blink_export.h"
#include "third_party/WebKit/public/platform/WebExternalBitmap.h"

namespace cc {
class SharedBitmap;
}

namespace cc_blink {

typedef std::unique_ptr<cc::SharedBitmap> (*SharedBitmapAllocationFunction)(
    const gfx::Size& size);

// Sets the function that this will use to allocate shared memory.
CC_BLINK_EXPORT void SetSharedBitmapAllocationFunction(
    SharedBitmapAllocationFunction);

class WebExternalBitmapImpl : public blink::WebExternalBitmap {
 public:
  CC_BLINK_EXPORT explicit WebExternalBitmapImpl();
  virtual ~WebExternalBitmapImpl();

  // blink::WebExternalBitmap implementation.
  blink::WebSize size() override;
  void setSize(blink::WebSize size) override;
  uint8_t* pixels() override;

  cc::SharedBitmap* shared_bitmap() { return shared_bitmap_.get(); }

 private:
  std::unique_ptr<cc::SharedBitmap> shared_bitmap_;
  blink::WebSize size_;

  DISALLOW_COPY_AND_ASSIGN(WebExternalBitmapImpl);
};

}  // namespace cc_blink

#endif  // CC_BLINK_WEB_EXTERNAL_BITMAP_IMPL_H_