content/common/gpu/client/gpu_memory_buffer_impl_surface_texture.h

   1 // Copyright 2014 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_SURFACE_TEXTURE_H_
   6 #define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SURFACE_TEXTURE_H_
   7
   8 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
   9
  10 struct ANativeWindow;
  11
  12 namespace content {
  13
  14 // Implementation of GPU memory buffer based on SurfaceTextures.
  15 class GpuMemoryBufferImplSurfaceTexture : public GpuMemoryBufferImpl {
  16  public:
  17   GpuMemoryBufferImplSurfaceTexture(const gfx::Size& size,
  18                                     unsigned internalformat);
  19   virtual ~GpuMemoryBufferImplSurfaceTexture();
  20
  21   static bool IsFormatSupported(unsigned internalformat);
  22   static bool IsUsageSupported(unsigned usage);
  23   static bool IsConfigurationSupported(unsigned internalformat, unsigned usage);
  24   static int WindowFormat(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 gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE;
  32   virtual uint32 GetStride() const OVERRIDE;
  33
  34  private:
  35   gfx::SurfaceTextureId surface_texture_id_;
  36   ANativeWindow* native_window_;
  37   size_t stride_;
  38
  39   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplSurfaceTexture);
  40 };
  41
  42 }  // namespace content
  43
  44 #endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SURFACE_TEXTURE_H_