-static int query_formats_noformat(AVFilterContext *ctx)
-{
- avfilter_set_common_formats(ctx, make_format_list(ctx->priv, 0));
- return 0;
-}
-
-static void start_frame(AVFilterLink *link, AVFilterPicRef *picref)
-{
- avfilter_start_frame(link->dst->outputs[0], picref);
-}
-
-static void end_frame(AVFilterLink *link)
-{
- avfilter_end_frame(link->dst->outputs[0]);
-}
-
-static void draw_slice(AVFilterLink *link, int y, int h)
-{
- avfilter_draw_slice(link->dst->outputs[0], y, h);
-}
-