zero copy - NOT FOR REVIEW

content/common/gpu/client/gpu_memory_buffer_impl_foobar.h

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_FOOBAR_H_
+#define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_FOOBAR_H_
+
+#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
+
+struct _drm_intel_bo;
+
+namespace content {
+
+// Provides implementation of a GPU memory buffer based
+// on a foobar object.
+class GpuMemoryBufferImplFoobar : public GpuMemoryBufferImpl {
+ public:
+  GpuMemoryBufferImplFoobar(gfx::Size size, unsigned internalformat);
+  virtual ~GpuMemoryBufferImplFoobar();
+
+  static bool IsFormatSupported(unsigned internalformat);
+
+  bool InitializeFromFoobarObject(void *foobar_object);
+
+  // Overridden from gfx::GpuMemoryBuffer:
+  virtual void Map(AccessMode mode, void** vaddr) OVERRIDE;
+  virtual void Unmap() OVERRIDE;
+  virtual gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE;
+
+ private:
+  struct _drm_intel_bo *foobar_object;
+  mutable int _prime_fd;
+  int prime_fd() const;
+  DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplFoobar);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_FOOBAR_H_