native_client_sdk/src/libraries/ppapi_simple/ps.cc

   1 // Copyright (c) 2012 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 #include "ppapi/c/pp_instance.h"
   6 #include "ppapi/c/pp_module.h"
   7
   8 #include "ppapi/cpp/instance.h"
   9 #include "ppapi/cpp/module.h"
  10
  11 #include "ppapi_simple/ps.h"
  12
  13 static pp::Instance* s_Instance = NULL;
  14
  15 PP_Instance PSGetInstanceId(void) {
  16   if (s_Instance == NULL)
  17     return 0;
  18   return s_Instance->pp_instance();
  19 }
  20
  21 const void* PSGetInterface(const char *name) {
  22   pp::Module* module = pp::Module::Get();
  23   if (module == NULL)
  24     return NULL;
  25   return module->GetBrowserInterface(name);
  26 }
  27
  28
  29 // The Module class.  The browser calls the CreateInstance() method to create
  30 // an instance of your NaCl module on the web page.  The browser creates a new
  31 // instance for each <embed> tag with type="application/x-nacl".
  32 class PSModule : public pp::Module {
  33  public:
  34   PSModule() : pp::Module() {}
  35   virtual ~PSModule() {}
  36
  37   virtual pp::Instance* CreateInstance(PP_Instance instance) {
  38     s_Instance = static_cast<pp::Instance*>(PSUserCreateInstance(instance));
  39     return s_Instance;
  40   }
  41 };
  42
  43 namespace pp {
  44
  45 // Factory function called by the browser when the module is first loaded.
  46 // The browser keeps a singleton of this module.  It calls the
  47 // CreateInstance() method on the object you return to make instances.  There
  48 // is one instance per <embed> tag on the page.  This is the main binding
  49 // point for your NaCl module with the browser.
  50 Module* CreateModule() {
  51   return new PSModule();
  52 }
  53
  54 }  // namespace pp
  55