pub unsafe extern "C" fn avfilter_graph_get_filter(
graph: *mut AVFilterGraph,
name: *const c_char,
) -> *mut AVFilterContext展开描述
Get a filter instance identified by instance name from graph.
@param graph filter graph to search through. @param name filter instance name (should be unique in the graph). @return the pointer to the found filter instance or NULL if it cannot be found.