+int ff_filter_process_command(AVFilterContext *ctx, const char *cmd,
+ const char *arg, char *res, int res_len, int flags)
+{
+ const AVOption *o;
+
+ if (!ctx->filter->priv_class)
+ return 0;
+ o = av_opt_find2(ctx->priv, cmd, NULL, AV_OPT_FLAG_RUNTIME_PARAM | AV_OPT_FLAG_FILTERING_PARAM, AV_OPT_SEARCH_CHILDREN, NULL);
+ if (!o)
+ return AVERROR(ENOSYS);
+ return av_opt_set(ctx->priv, cmd, arg, 0);
+}
+