-int bttv_risc_planar(struct bttv *btv, struct btcx_riscmem *risc,
- struct scatterlist *sglist,
- unsigned int yoffset, unsigned int ybpl,
- unsigned int ypadding, unsigned int ylines,
- unsigned int uoffset, unsigned int voffset,
- unsigned int hshift, unsigned int vshift,
- unsigned int cpadding);
-int bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc,
- const struct bttv_format *fmt,
- struct bttv_overlay *ov,
- int skip_top, int skip_bottom);
-
-/* calculate / apply geometry settings */
-void bttv_calc_geo(struct bttv *btv, struct bttv_geometry *geo,
- int width, int height, int interleaved, int norm);
-void bttv_apply_geo(struct bttv *btv, struct bttv_geometry *geo, int top);