working copy of "zero_copy"

content/browser/gpu/dri_buffer_manager.h

+// Copyright (c) 2014 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_BROWSER_GPU_DRI_BUFFER_MANAGER_H_
+#define CONTENT_BROWSER_GPU_DRI_BUFFER_MANAGER_H_
+
+#include "base/basictypes.h"
+#include "ui/gfx/gpu_memory_buffer.h"
+
+struct gbm_device;
+
+namespace content {
+
+class DRIBufferManager {
+ public:
+  DRIBufferManager();
+  virtual ~DRIBufferManager();
+
+  static void CreateBuffer(int width, int height, gfx::GpuMemoryBufferHandle& handle);
+ private:
+  static bool AuthConnection();
+  bool IsMmapSupported();
+  bool MmapDmaBuf(int dma_buf_id, int proc, int stride);
+  static int fd_;
+  static struct gbm_device* gbm_;
+  DISALLOW_COPY_AND_ASSIGN(DRIBufferManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_GPU_DRI_BUFFER_MANAGER_H_