src/chrome/renderer/pepper/pepper_shared_memory_message_filter.h

   1 // Copyright (c) 2013 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 CHROME_RENDERER_PEPPER_PEPPER_SHARED_MEMORY_MESSAGE_FILTER_H_
   6 #define CHROME_RENDERER_PEPPER_PEPPER_SHARED_MEMORY_MESSAGE_FILTER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/platform_file.h"
  11 #include "ppapi/c/pp_instance.h"
  12 #include "ppapi/host/instance_message_filter.h"
  13
  14 namespace content {
  15 class RendererPpapiHost;
  16 }
  17
  18 namespace ppapi {
  19 namespace proxy {
  20 class SerializedHandle;
  21 }
  22 }
  23
  24 // Implements the backend for shared memory messages from a plugin process.
  25 class PepperSharedMemoryMessageFilter
  26     : public ppapi::host::InstanceMessageFilter {
  27  public:
  28   explicit PepperSharedMemoryMessageFilter(content::RendererPpapiHost* host);
  29   virtual ~PepperSharedMemoryMessageFilter();
  30
  31   // InstanceMessageFilter:
  32   virtual bool OnInstanceMessageReceived(const IPC::Message& msg) OVERRIDE;
  33
  34   bool Send(IPC::Message* msg);
  35
  36  private:
  37   // Message handlers.
  38   void OnHostMsgCreateSharedMemory(
  39       PP_Instance instance,
  40       uint32_t size,
  41       int* host_shm_handle_id,
  42       ppapi::proxy::SerializedHandle* plugin_shm_handle);
  43
  44   content::RendererPpapiHost* host_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(PepperSharedMemoryMessageFilter);
  47 };
  48
  49 #endif  // CHROME_RENDERER_PEPPER_PEPPER_SHARED_MEMORY_MESSAGE_FILTER_H_