gpu/command_buffer/service/image_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 GPU_COMMAND_BUFFER_SERVICE_IMAGE_FACTORY_H_
   6 #define GPU_COMMAND_BUFFER_SERVICE_IMAGE_FACTORY_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "gpu/gpu_export.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 gpu {
  18
  19 class GPU_EXPORT ImageFactory {
  20  public:
  21   ImageFactory();
  22
  23   // Returns a valid GpuMemoryBuffer format given a valid internalformat as
  24   // defined by CHROMIUM_gpu_memory_buffer_image.
  25   static gfx::GpuMemoryBuffer::Format ImageFormatToGpuMemoryBufferFormat(
  26       unsigned internalformat);
  27
  28   // Returns a valid GpuMemoryBuffer usage given a valid usage as defined by
  29   // CHROMIUM_gpu_memory_buffer_image.
  30   static gfx::GpuMemoryBuffer::Usage ImageUsageToGpuMemoryBufferUsage(
  31       unsigned usage);
  32
  33   // Returns true if |internalformat| is compatible with |format|.
  34   static bool IsImageFormatCompatibleWithGpuMemoryBufferFormat(
  35       unsigned internalformat,
  36       gfx::GpuMemoryBuffer::Format format);
  37
  38   // Creates a GLImage instance for GPU memory buffer identified by |handle|.
  39   // |client_id| should be set to the client requesting the creation of instance
  40   // and can be used by factory implementation to verify access rights.
  41   virtual scoped_refptr<gfx::GLImage> CreateImageForGpuMemoryBuffer(
  42       const gfx::GpuMemoryBufferHandle& handle,
  43       const gfx::Size& size,
  44       gfx::GpuMemoryBuffer::Format format,
  45       unsigned internalformat,
  46       int client_id) = 0;
  47
  48  protected:
  49   virtual ~ImageFactory();
  50 };
  51
  52 }  // namespace gpu
  53
  54 #endif  // GPU_COMMAND_BUFFER_SERVICE_IMAGE_FACTORY_H_