diff options
Diffstat (limited to 'sub/draw_bmp.h')
| -rw-r--r-- | sub/draw_bmp.h | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/sub/draw_bmp.h b/sub/draw_bmp.h index 6833d42cf7..d54a1c7685 100644 --- a/sub/draw_bmp.h +++ b/sub/draw_bmp.h @@ -3,12 +3,53 @@ #include "osd.h" +struct mp_rect; struct mp_image; struct mp_draw_sub_cache; -bool mp_draw_sub_bitmaps(struct mp_draw_sub_cache **cache, struct mp_image *dst, + +struct mp_draw_sub_cache *mp_draw_sub_alloc(void *ta_parent); + +// Render the sub-bitmaps in sbs_list to dst. sbs_list must have been rendered +// for an OSD resolution equivalent to dst's size (UB if not). +// Warning: if dst is a format with alpha, and dst is not set to MP_ALPHA_PREMUL +// (not done by default), this will be extremely slow. +// Warning: the caller is responsible for ensuring that dst is writable. +// cache: allocated instance; caches non-changing OSD parts etc. +// dst: image to draw to +// sbs_list: source sub-bitmaps +// returns: success +bool mp_draw_sub_bitmaps(struct mp_draw_sub_cache *cache, struct mp_image *dst, struct sub_bitmap_list *sbs_list); + char *mp_draw_sub_get_dbg_info(struct mp_draw_sub_cache *c); +// Return a RGBA overlay with subtitles. The returned image uses IMGFMT_BGRA and +// premultiplied alpha, and the size specified by sbs_list.w/h. +// This can return a list of active (act_) and modified (mod_) rectangles. +// Active rectangles are regions that contain visible OSD pixels. Modified +// rectangles are regions that were changed since the last call. This function +// always makes the act region a subset of the mod region. Rectangles within a +// list never overlap with rectangles within the same list. +// If the user-provided lists are too small (max_*_rcs too small), multiple +// rectangles are merged until they fit in the list. +// You can pass max_act_rcs=0, which implies you render the whole overlay. +// cache: allocated instance; keeps track of changed regions +// sbs_list: source sub-bitmaps +// act_rcs: caller allocated list of non-transparent rectangles +// max_act_rcs: number of allocated items in act_rcs +// num_act_rcs: set to the number of valid items in act_rcs +// mod_rcs, max_mod_rcs, num_mod_rcs: modified rectangles +// returns: internal OSD overlay owned by cache, NULL on error +// read only, valid until the next call on cache +struct mp_image *mp_draw_sub_overlay(struct mp_draw_sub_cache *cache, + struct sub_bitmap_list *sbs_list, + struct mp_rect *act_rcs, + int max_act_rcs, + int *num_act_rcs, + struct mp_rect *mod_rcs, + int max_mod_rcs, + int *num_mod_rcs); + extern const bool mp_draw_sub_formats[SUBBITMAP_COUNT]; #endif /* MPLAYER_DRAW_BMP_H */ |