components/mus/gles2/mojo_gpu_memory_buffer.h

   1 // Copyright 2015 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 COMPONENTS_MUS_GLES2_MOJO_GPU_MEMORY_BUFFER_H_
   6 #define COMPONENTS_MUS_GLES2_MOJO_GPU_MEMORY_BUFFER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "ui/gfx/geometry/size.h"
  10 #include "ui/gfx/gpu_memory_buffer.h"
  11
  12 namespace mus {
  13
  14 class MojoGpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
  15  public:
  16   MojoGpuMemoryBufferImpl(const gfx::Size& size,
  17                           gfx::BufferFormat format,
  18                           scoped_ptr<base::SharedMemory> shared_memory);
  19   ~MojoGpuMemoryBufferImpl() override;
  20
  21   static scoped_ptr<gfx::GpuMemoryBuffer> Create(const gfx::Size& size,
  22                                                  gfx::BufferFormat format,
  23                                                  gfx::BufferUsage usage);
  24
  25   static MojoGpuMemoryBufferImpl* FromClientBuffer(ClientBuffer buffer);
  26
  27   const unsigned char* GetMemory() const;
  28
  29   // Overridden from gfx::GpuMemoryBuffer:
  30   bool Map(void** data) override;
  31   void Unmap() override;
  32   bool IsMapped() const override;
  33   gfx::BufferFormat GetFormat() const override;
  34   void GetStride(int* stride) const override;
  35   gfx::GpuMemoryBufferId GetId() const override;
  36   gfx::GpuMemoryBufferHandle GetHandle() const override;
  37   ClientBuffer AsClientBuffer() override;
  38
  39  private:
  40   const gfx::Size size_;
  41   gfx::BufferFormat format_;
  42   scoped_ptr<base::SharedMemory> shared_memory_;
  43   bool mapped_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(MojoGpuMemoryBufferImpl);
  46 };
  47
  48 }  // namespace mus
  49
  50 #endif  // COMPONENTS_MUS_GLES2_MOJO_GPU_MEMORY_BUFFER_H_