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_ 43