Function avfilter_graph_config

pub unsafe extern "C" fn avfilter_graph_config(
    graphctx: *mut AVFilterGraph,
    log_ctx: *mut c_void,
) -> i32

Check validity and configure all the links and formats in the graph.

@param graphctx the filter graph @param log_ctx context used for logging @return >= 0 in case of success, a negative AVERROR code otherwise