content/renderer/pepper/pepper_platform_image_2d_impl.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_PEPPER_PEPPER_PLATFORM_IMAGE_2D_IMPL_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_IMAGE_2D_IMPL_H_
   7
   8 #include "base/basictypes.h"
   9 #include "webkit/plugins/ppapi/plugin_delegate.h"
  10
  11 namespace content {
  12
  13 // Implements the Image2D using a TransportDIB.
  14 class PepperPlatformImage2DImpl
  15     : public webkit::ppapi::PluginDelegate::PlatformImage2D {
  16  public:
  17   virtual ~PepperPlatformImage2DImpl();
  18
  19   // Factory function that properly allocates a TransportDIB according to
  20   // the platform. Returns NULL on failure.
  21   static PepperPlatformImage2DImpl* Create(int width, int height);
  22
  23   // PlatformImage2D implementation.
  24   virtual SkCanvas* Map() OVERRIDE;
  25   virtual intptr_t GetSharedMemoryHandle(uint32* byte_count) const OVERRIDE;
  26   virtual TransportDIB* GetTransportDIB() const OVERRIDE;
  27
  28  private:
  29   // This constructor will take ownership of the dib pointer.
  30   // On Mac, we assume that the dib is cached by the browser, so on destruction
  31   // we'll tell the browser to free it.
  32   PepperPlatformImage2DImpl(int width, int height, TransportDIB* dib);
  33
  34   int width_;
  35   int height_;
  36   scoped_ptr<TransportDIB> dib_;
  37
  38   DISALLOW_COPY_AND_ASSIGN(PepperPlatformImage2DImpl);
  39 };
  40
  41 }  // namespace content
  42
  43 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_IMAGE_2D_IMPL_H_