mpv/sub/img_convert.h

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#ifndef MPLAYER_SUB_IMG_CONVERT_H
#define MPLAYER_SUB_IMG_CONVERT_H
#include <stdbool.h>
struct osd_conv_cache;
struct sub_bitmaps;
struct mp_rect;
struct osd_conv_cache *osd_conv_cache_new(void);
// These functions convert from one OSD format to another. On success, they copy
// the converted image data into c, and change imgs to point to the data.
bool osd_conv_idx_to_rgba(struct osd_conv_cache *c, struct sub_bitmaps *imgs);
bool osd_conv_ass_to_rgba(struct osd_conv_cache *c, struct sub_bitmaps *imgs);
// Sub postprocessing
bool osd_conv_blur_rgba(struct osd_conv_cache *c, struct sub_bitmaps *imgs,
double gblur);
bool osd_conv_idx_to_gray(struct osd_conv_cache *c, struct sub_bitmaps *imgs);
bool mp_sub_bitmaps_bb(struct sub_bitmaps *imgs, struct mp_rect *out_bb);
// Intentionally limit the maximum number of bounding rects to something low.
// This prevents the algorithm from degrading to O(N^2).
// Most subtitles yield a very low number of bounding rects (<5).
#define MP_SUB_BB_LIST_MAX 15
int mp_get_sub_bb_list(struct sub_bitmaps *sbs, struct mp_rect *out_rc_list,
int rc_list_count);
#endif