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