content/renderer/pepper/host_dispatcher_wrapper.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 CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_
   6 #define CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_
   7
   8 #include "base/process/process_handle.h"
   9 #include "ppapi/c/pp_instance.h"
  10 #include "ppapi/c/ppp.h"
  11 #include "ppapi/proxy/host_dispatcher.h"
  12 #include "ppapi/shared_impl/ppapi_permissions.h"
  13
  14 namespace IPC {
  15 struct ChannelHandle;
  16 }
  17
  18 namespace content {
  19 class PepperHungPluginFilter;
  20 class PluginModule;
  21
  22 // This class wraps a dispatcher and has the same lifetime. A dispatcher has
  23 // the same lifetime as a plugin module, which is longer than any particular
  24 // RenderView or plugin instance.
  25 class HostDispatcherWrapper {
  26  public:
  27   HostDispatcherWrapper(PluginModule* module,
  28                         base::ProcessId peer_pid,
  29                         int plugin_child_id,
  30                         const ppapi::PpapiPermissions& perms,
  31                         bool is_external);
  32   virtual ~HostDispatcherWrapper();
  33
  34   bool Init(const IPC::ChannelHandle& channel_handle,
  35             PP_GetInterface_Func local_get_interface,
  36             const ppapi::Preferences& preferences,
  37             PepperHungPluginFilter* filter);
  38
  39   // Implements GetInterface for the proxied plugin.
  40   const void* GetProxiedInterface(const char* name);
  41
  42   // Notification to the out-of-process layer that the given plugin instance
  43   // has been created. This will happen before the normal PPB_Instance method
  44   // calls so the out-of-process code can set up the tracking information for
  45   // the new instance.
  46   void AddInstance(PP_Instance instance);
  47
  48   // Like AddInstance but removes the given instance. This is called after
  49   // regular instance shutdown so the out-of-process code can clean up its
  50   // tracking information.
  51   void RemoveInstance(PP_Instance instance);
  52
  53   base::ProcessId peer_pid() { return peer_pid_; }
  54   int plugin_child_id() { return plugin_child_id_; }
  55   ppapi::proxy::HostDispatcher* dispatcher() { return dispatcher_.get(); }
  56
  57  private:
  58   PluginModule* module_;
  59
  60   base::ProcessId peer_pid_;
  61
  62   // ID that the browser process uses to idetify the child process for the
  63   // plugin. This isn't directly useful from our process (the renderer) except
  64   // in messages to the browser to disambiguate plugins.
  65   int plugin_child_id_;
  66
  67   ppapi::PpapiPermissions permissions_;
  68   bool is_external_;
  69
  70   scoped_ptr<ppapi::proxy::HostDispatcher> dispatcher_;
  71   scoped_ptr<ppapi::proxy::ProxyChannel::Delegate> dispatcher_delegate_;
  72 };
  73
  74 }  // namespace content
  75
  76 #endif  // CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_