A #GstPlugin, or %NULL for a static typefind function
The name for registering
The rank (or importance) of this typefind function
The #GstTypeFindFunction to use
Optional comma-separated list of extensions that could belong to this type
Optionally the caps that could be returned when typefinding succeeds
Optional user data. This user data must be available until the plugin is unloaded.
a #GDestroyNotify that will be called on @data when the plugin is unloaded.
%TRUE on success, %FALSE otherwise
Registers a new typefind function to be used for typefinding. After registering this function will be available for typefinding. This function is typically called during an element's plugin initialization.