1 files changed, 94 insertions, 0 deletions
diff --git a/xbmc/interfaces/python/LanguageHook.h b/xbmc/interfaces/python/LanguageHook.h
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+++ b/xbmc/interfaces/python/LanguageHook.h
@@ -0,0 +1,94 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "interfaces/legacy/LanguageHook.h"
+#include "threads/Event.h"
+
+#include <map>
+#include <mutex>
+#include <set>
+
+#include <Python.h>
+
+namespace XBMCAddon
+{
+  namespace Python
+  {
+    struct MutableInteger;
+
+    /**
+     * This class supplies the python specific functionality for
+     *  plugging into the API. It's got a static only implementation
+     *  and uses the singleton pattern for access.
+     */
+    class PythonLanguageHook : public XBMCAddon::LanguageHook
+    {
+      PyInterpreterState* m_interp;
+      CCriticalSection crit;
+      std::set<AddonClass*> currentObjects;
+
+      // This constructor is only used to instantiate the global LanguageHook
+      inline PythonLanguageHook() : m_interp(NULL)  {  }
+
+    public:
+
+      inline explicit PythonLanguageHook(PyInterpreterState* interp) : m_interp(interp)  {  }
+      ~PythonLanguageHook() override;
+
+      void DelayedCallOpen() override;
+      void DelayedCallClose() override;
+      void MakePendingCalls() override;
+
+      /**
+       * PythonCallbackHandler expects to be instantiated PER AddonClass instance
+       *  that is to be used as a callback. This is why this cannot be instantiated
+       *  once.
+       *
+       * There is an expectation that this method is called from the Python thread
+       *  that instantiated an AddonClass that has the potential for a callback.
+       *
+       * See RetardedAsyncCallbackHandler for more details.
+       * See PythonCallbackHandler for more details
+       * See PythonCallbackHandler::PythonCallbackHandler for more details
+       */
+      XBMCAddon::CallbackHandler* GetCallbackHandler() override;
+
+      String GetAddonId() override;
+      String GetAddonVersion() override;
+      long GetInvokerId() override;
+
+      void RegisterPlayerCallback(IPlayerCallback* player) override;
+      void UnregisterPlayerCallback(IPlayerCallback* player) override;
+      void RegisterMonitorCallback(XBMCAddon::xbmc::Monitor* monitor) override;
+      void UnregisterMonitorCallback(XBMCAddon::xbmc::Monitor* monitor) override;
+      bool WaitForEvent(CEvent& hEvent, unsigned int milliseconds) override;
+
+      static AddonClass::Ref<PythonLanguageHook> GetIfExists(PyInterpreterState* interp);
+      static bool IsAddonClassInstanceRegistered(AddonClass* obj);
+
+      void RegisterAddonClassInstance(AddonClass* obj);
+      void UnregisterAddonClassInstance(AddonClass* obj);
+      bool HasRegisteredAddonClassInstance(AddonClass* obj);
+      inline bool HasRegisteredAddonClasses()
+      {
+        std::unique_lock<CCriticalSection> l(*this);
+        return !currentObjects.empty();
+      }
+
+      // You should hold the lock on the LanguageHook itself if you're
+      // going to do anything with the set that gets returned.
+      inline std::set<AddonClass*>& GetRegisteredAddonClasses() { return currentObjects; }
+
+      void UnregisterMe();
+      void RegisterMe();
+    };
+  }
+}
+