content/common/mac/io_surface_manager.h

   1 // Copyright 2015 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_MAC_IO_SURFACE_MANAGER_H_
   6 #define CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_H_
   7
   8 #include <IOSurface/IOSurface.h>
   9
  10 #include "content/common/content_export.h"
  11
  12 namespace content {
  13
  14 // This interface provides a mechanism for different processes to securely
  15 // share IOSurfaces. A process can register an IOSurface for use in another
  16 // process and the client ID provided with registration determines the process
  17 // that can acquire a reference to the IOSurface.
  18 class CONTENT_EXPORT IOSurfaceManager {
  19  public:
  20   static IOSurfaceManager* GetInstance();
  21   static void SetInstance(IOSurfaceManager* instance);
  22
  23   // Register an IO surface for use in another process.
  24   virtual bool RegisterIOSurface(int io_surface_id,
  25                                  int client_id,
  26                                  IOSurfaceRef io_surface) = 0;
  27
  28   // Unregister an IO surface previously registered for use in another
  29   // process.
  30   virtual void UnregisterIOSurface(int io_surface_id, int client_id) = 0;
  31
  32   // Acquire IO surface reference for a registered IO surface.
  33   virtual IOSurfaceRef AcquireIOSurface(int io_surface_id) = 0;
  34
  35  protected:
  36   virtual ~IOSurfaceManager() {}
  37 };
  38
  39 }  // namespace content
  40
  41 #endif  // CONTENT_COMMON_MAC_IO_SURFACE_MANAGER_H_