content/common/gpu/gpu_memory_buffer_factory.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_GPU_MEMORY_BUFFER_FACTORY_H_
   6 #define CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "ui/gfx/geometry/size.h"
  11 #include "ui/gfx/gpu_memory_buffer.h"
  12
  13 namespace gfx {
  14 class GLImage;
  15 }
  16
  17 namespace content {
  18
  19 class GpuMemoryBufferFactory {
  20  public:
  21   GpuMemoryBufferFactory() {}
  22   virtual ~GpuMemoryBufferFactory() {}
  23
  24   // Creates a new platform specific factory instance.
  25   static scoped_ptr<GpuMemoryBufferFactory> Create();
  26
  27   // Creates a GPU memory buffer instance from |handle|. Whether the storage for
  28   // the buffer is passed with the handle or allocated as part of buffer
  29   // creation depends on the type. A valid handle is returned on success.
  30   virtual gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
  31       const gfx::GpuMemoryBufferHandle& handle,
  32       const gfx::Size& size,
  33       unsigned internalformat,
  34       unsigned usage) = 0;
  35
  36   // Destroys GPU memory buffer identified by |handle|.
  37   virtual void DestroyGpuMemoryBuffer(
  38       const gfx::GpuMemoryBufferHandle& handle) = 0;
  39
  40   // Creates a GLImage instance for GPU memory buffer identified by |handle|.
  41   // |client_id| should be set to the client requesting the creation of instance
  42   // and can be used by factory implementation to verify access rights.
  43   virtual scoped_refptr<gfx::GLImage> CreateImageForGpuMemoryBuffer(
  44       const gfx::GpuMemoryBufferHandle& handle,
  45       const gfx::Size& size,
  46       unsigned internalformat,
  47       int client_id) = 0;
  48
  49  private:
  50   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferFactory);
  51 };
  52
  53 }  // namespace content
  54
  55 #endif  // CONTENT_COMMON_GPU_GPU_MEMORY_BUFFER_FACTORY_H_