block_t * ( * pf_audio_filter ) ( filter_t *, block_t * );
void ( * pf_video_blend ) ( filter_t *, picture_t *,
picture_t *, picture_t *,
- int, int );
+ int, int, int );
subpicture_t * ( *pf_sub_filter ) ( filter_t *, mtime_t );
subpicture_t * ( *pf_render_string ) ( filter_t *, block_t * );