mirror of
https://github.com/mpv-player/mpv
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64 lines
2.9 KiB
C
64 lines
2.9 KiB
C
#ifndef MPLAYER_DRAW_BMP_H
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#define MPLAYER_DRAW_BMP_H
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#include "osd.h"
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struct mp_rect;
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struct mp_image;
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struct mpv_global;
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struct mp_draw_sub_cache;
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struct mp_draw_sub_cache *mp_draw_sub_alloc(void *ta_parent, struct mpv_global *g);
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// Only for use in tests.
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struct mp_draw_sub_cache *mp_draw_sub_alloc_test(struct mp_image *dst);
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// Render the sub-bitmaps in sbs_list to dst. sbs_list must have been rendered
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// for an OSD resolution equivalent to dst's size (UB if not).
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// Warning: if dst is a format with alpha, and dst is not set to PL_ALPHA_PREMULTIPLIED
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// (not done by default), this will be extremely slow.
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// Warning: the caller is responsible for ensuring that dst is writable.
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// cache: allocated instance; caches non-changing OSD parts etc.
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// dst: image to draw to
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// sbs_list: source sub-bitmaps
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// returns: success
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bool mp_draw_sub_bitmaps(struct mp_draw_sub_cache *cache, struct mp_image *dst,
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struct sub_bitmap_list *sbs_list);
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char *mp_draw_sub_get_dbg_info(struct mp_draw_sub_cache *c);
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// Return a RGBA overlay with subtitles. The returned image uses IMGFMT_BGRA and
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// premultiplied alpha, and the size specified by sbs_list.w/h.
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// This can return a list of active (act_) and modified (mod_) rectangles.
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// Active rectangles are regions that contain visible OSD pixels. Modified
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// rectangles are regions that were changed since the last call. This function
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// always makes the act region a subset of the mod region. Rectangles within a
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// list never overlap with rectangles within the same list.
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// If num_mod_rcs==0 is returned, this function guarantees that the act region
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// did not change since the last call.
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// If the user-provided lists are too small (max_*_rcs too small), multiple
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// rectangles are merged until they fit in the list.
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// You can pass max_act_rcs=0, which implies you render the whole overlay.
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// cache: allocated instance; keeps track of changed regions
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// sbs_list: source sub-bitmaps
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// act_rcs: caller allocated list of non-transparent rectangles
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// max_act_rcs: number of allocated items in act_rcs
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// num_act_rcs: set to the number of valid items in act_rcs
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// mod_rcs, max_mod_rcs, num_mod_rcs: modified rectangles
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// returns: internal OSD overlay owned by cache, NULL on error
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// read only, valid until the next call on cache
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struct mp_image *mp_draw_sub_overlay(struct mp_draw_sub_cache *cache,
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struct sub_bitmap_list *sbs_list,
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struct mp_rect *act_rcs,
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int max_act_rcs,
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int *num_act_rcs,
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struct mp_rect *mod_rcs,
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int max_mod_rcs,
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int *num_mod_rcs);
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extern const bool mp_draw_sub_formats[SUBBITMAP_COUNT];
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#endif /* MPLAYER_DRAW_BMP_H */
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// vim: ts=4 sw=4 et tw=80
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