Add initialization of mediastreamer plugins in the Python module.

tools/python/apixml2python/handwritten_definitions.mustache

@@ -247,6 +247,13 @@ static PyObject * pylinphone_Core_get_video_devices(PyObject *self, void *closur
 	return _list;
 }
 
+static void pylinphone_init_ms2_plugins(void) {
+	ms_init(); // Initialize mediastreamer2 before loading the plugins
+#ifdef ENABLE_OPENH264
+	libmsopenh264_init();
+#endif
+}
+
 static PyObject * pylinphone_Core_class_method_new(PyObject *cls, PyObject *args) {
 	LinphoneCore * cresult;
 	pylinphone_CoreObject *self;
@@ -275,6 +282,7 @@ static PyObject * pylinphone_Core_class_method_new(PyObject *cls, PyObject *args
 {{/core_events}}
 
 	pylinphone_trace(1, "[PYLINPHONE] >>> %s(%p, \"%s\", \"%s\")", __FUNCTION__, _vtable_dict, _config_path, _factory_config_path);
+	pylinphone_init_ms2_plugins();
 	cresult = linphone_core_new(&_vtable, _config_path, _factory_config_path, self);
 	self->native_ptr = cresult;
 
@@ -317,6 +325,7 @@ static PyObject * pylinphone_Core_class_method_new_with_config(PyObject *cls, Py
 {{/core_events}}
 
 	pylinphone_trace(1, "[PYLINPHONE] >>> %s(%p [%p])", __FUNCTION__, _config, _config_native_ptr);
+	pylinphone_init_ms2_plugins();
 	cresult = linphone_core_new_with_config(&_vtable, _config_native_ptr, self);
 	self->native_ptr = cresult;