location where to store a pointer to the object whose property got changed, or null
return location for the name of the property that got changed, or null
return location for the new value of the property that got changed, or null. This will only be set if the property notify watch was told to include the value when it was set up
Parses a property-notify message. These will be posted on the bus only when set up with gst.element.Element.addPropertyNotifyWatch or gst.element.Element.addPropertyDeepNotifyWatch.