Method CallPythonCallback

src/libcec/SwigHelper.h:113–142

* Call a python callback (if set) * @param callback the callback to call * @param arglist the arguments to pass to the callback * @return 0 if the callback failed, the result returned by python otherwise */

     * @return 0 if the callback failed, the result returned by python otherwise
     */
    int CallPythonCallback(enum libcecSwigCallback callback, PyObject* arglist)
    {
      int retval = 0;

      if (callback >= NB_PYTHON_CB || !m_callbacks[callback])
        return retval;

      PyObject* result = nullptr;
      if (!!m_callbacks[callback])
      {
        /** call the callback */
        #if (PY_MAJOR_VERSION < 3)
        result = PyEval_CallObject(m_callbacks[callback], arglist);
        #else // (PY_MAJOR_VERSION >= 3)
        result = PyObject_CallObject(m_callbacks[callback], arglist);
        #endif

        /** unref the argument and result */
        if (!!arglist)
          Py_DECREF(arglist);
        if (!!result)
        {
          if (PyInt_Check(result))
            retval = (int)PyInt_AsLong(result);
          Py_XDECREF(result);
        }
      }

      return retval;
    }

    /**
     * Set a python callable as callback