content/common/gpu/client/gpu_memory_buffer_impl_io_surface.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 CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
   6 #define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_
   7
   8 #include <IOSurface/IOSurfaceAPI.h>
   9
  10 #include "base/mac/scoped_cftyperef.h"
  11 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
  12
  13 namespace content {
  14
  15 // Implementation of GPU memory buffer based on IO surfaces.
  16 class GpuMemoryBufferImplIOSurface : public GpuMemoryBufferImpl {
  17  public:
  18   GpuMemoryBufferImplIOSurface(const gfx::Size& size, unsigned internalformat);
  19   virtual ~GpuMemoryBufferImplIOSurface();
  20
  21   static bool IsFormatSupported(unsigned internalformat);
  22   static bool IsUsageSupported(unsigned usage);
  23   static bool IsConfigurationSupported(unsigned internalformat, unsigned usage);
  24   static uint32 PixelFormat(unsigned internalformat);
  25
  26   bool InitializeFromHandle(gfx::GpuMemoryBufferHandle handle);
  27
  28   // Overridden from gfx::GpuMemoryBuffer:
  29   virtual void* Map() OVERRIDE;
  30   virtual void Unmap() OVERRIDE;
  31   virtual uint32 GetStride() const OVERRIDE;
  32   virtual gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE;
  33
  34  private:
  35   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplIOSurface);
  38 };
  39
  40 }  // namespace content
  41
  42 #endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_