diff options
Diffstat (limited to 'sub/ass_mp.c')
-rw-r--r-- | sub/ass_mp.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sub/ass_mp.c b/sub/ass_mp.c index d5d9e3e7d6..d214375b61 100644 --- a/sub/ass_mp.c +++ b/sub/ass_mp.c @@ -23,6 +23,7 @@ #include <stdarg.h> #include <stdbool.h> #include <assert.h> +#include <math.h> #include <ass/ass.h> #include <ass/ass_types.h> @@ -385,3 +386,27 @@ void mp_ass_packer_pack(struct mp_ass_packer *p, ASS_Image **image_lists, p->cached_subs.change_id = 0; p->cached_subs_valid = true; } + +// Set *out_rc to [x0, y0, x1, y1] of the graphical bounding box in script +// coordinates. +// Set it to [inf, inf, -inf, -inf] if empty. +void mp_ass_get_bb(ASS_Image *image_list, ASS_Track *track, + struct mp_osd_res *res, double *out_rc) +{ + double rc[4] = {INFINITY, INFINITY, -INFINITY, -INFINITY}; + + for (ASS_Image *img = image_list; img; img = img->next) { + if (img->w == 0 || img->h == 0) + continue; + rc[0] = MPMIN(rc[0], img->dst_x); + rc[1] = MPMIN(rc[1], img->dst_y); + rc[2] = MPMAX(rc[2], img->dst_x + img->w); + rc[3] = MPMAX(rc[3], img->dst_y + img->h); + } + + double scale = track->PlayResY / (double)MPMAX(res->h, 1); + if (scale > 0) { + for (int i = 0; i < 4; i++) + out_rc[i] = rc[i] * scale; + } +} |