gpu: Refactor GpuMemoryBuffer framework for multi-process support.

gpu/command_buffer/service/gpu_control_service.h

+// Copyright (c) 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 GPU_COMMAND_BUFFER_SERVICE_GPU_CONTROL_SERVICE_H_
+#define GPU_COMMAND_BUFFER_SERVICE_GPU_CONTROL_SERVICE_H_
+
+#include <map>
+
+#include "base/memory/linked_ptr.h"
+#include "gpu/command_buffer/common/gpu_control.h"
+#include "ui/gfx/gpu_memory_buffer.h"
+
+namespace gpu {
+class GpuMemoryBufferFactory;
+class GpuMemoryBufferManagerInterface;
+
+class GPU_EXPORT GpuControlService : public GpuControl {
+ public:
+  GpuControlService(GpuMemoryBufferManagerInterface* gpu_memory_buffer_manager,
+                    GpuMemoryBufferFactory* gpu_memory_buffer_factory);
+  virtual ~GpuControlService();
+
+  // Overridden from GpuControl:
+  virtual gfx::GpuMemoryBuffer* CreateGpuMemoryBuffer(
+      size_t width,
+      size_t height,
+      unsigned internalformat,
+      int32* id) OVERRIDE;
+  virtual void DestroyGpuMemoryBuffer(int32 id) OVERRIDE;
+
+  // Register an existing gpu memory buffer and get an ID that can be used
+  // to identify it in the command buffer.
+  bool RegisterGpuMemoryBuffer(int32 id,
+                               gfx::GpuMemoryBufferHandle buffer,
+                               size_t width,
+                               size_t height,
+                               unsigned internalformat);
+
+ private:
+  GpuMemoryBufferManagerInterface* gpu_memory_buffer_manager_;
+  GpuMemoryBufferFactory* gpu_memory_buffer_factory_;
+  typedef std::map<int32, linked_ptr<gfx::GpuMemoryBuffer> > GpuMemoryBufferMap;
+  GpuMemoryBufferMap gpu_memory_buffers_;
+
+  DISALLOW_COPY_AND_ASSIGN(GpuControlService);
+};
+
+}  // namespace gpu
+
+#endif  // GPU_COMMAND_BUFFER_SERVICE_GPU_CONTROL_SERVICE_H_