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.
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_
8 #include "base/mac/scoped_cftyperef.h"
9 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
11 class IOSurfaceSupport;
15 // Implementation of GPU memory buffer based on IO surfaces.
16 class GpuMemoryBufferImplIOSurface : public GpuMemoryBufferImpl {
18 GpuMemoryBufferImplIOSurface(const gfx::Size& size, unsigned internalformat);
19 virtual ~GpuMemoryBufferImplIOSurface();
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);
26 bool InitializeFromHandle(gfx::GpuMemoryBufferHandle handle);
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;
35 IOSurfaceSupport* io_surface_support_;
36 base::ScopedCFTypeRef<CFTypeRef> io_surface_;
38 DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplIOSurface);
41 } // namespace content
43 #endif // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_