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/IOSurface.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   static scoped_ptr<GpuMemoryBufferImpl> CreateFromHandle(
  19       const gfx::GpuMemoryBufferHandle& handle,
  20       const gfx::Size& size,
  21       Format format,
  22       Usage usage,
  23       const DestructionCallback& callback);
  24
  25   // Overridden from gfx::GpuMemoryBuffer:
  26   bool Map(void** data) override;
  27   void Unmap() override;
  28   void GetStride(int* stride) const override;
  29   gfx::GpuMemoryBufferHandle GetHandle() const override;
  30
  31  private:
  32   GpuMemoryBufferImplIOSurface(gfx::GpuMemoryBufferId id,
  33                                const gfx::Size& size,
  34                                Format format,
  35                                const DestructionCallback& callback,
  36                                IOSurfaceRef io_surface,
  37                                uint32_t lock_flags);
  38   ~GpuMemoryBufferImplIOSurface() override;
  39
  40   base::ScopedCFTypeRef<IOSurfaceRef> io_surface_;
  41   uint32_t lock_flags_;
  42
  43   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplIOSurface);
  44 };
  45
  46 }  // namespace content
  47
  48 #endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_IO_SURFACE_H_