diff options
Diffstat (limited to 'sub/osd.c')
| -rw-r--r-- | sub/osd.c | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -325,6 +325,23 @@ void osd_object_get_scale_factor(struct osd_state *osd, struct osd_object *obj, *sh = nh / (double)obj->vo_res.h; } +// Turn *x and *y, which are given in OSD coordinates, to video coordinates. +// frame_w and frame_h give the dimensions of the original, unscaled video. +// (This gives correct results only after the OSD has been updated after a +// resize or video reconfig.) +void osd_coords_to_video(struct osd_state *osd, int frame_w, int frame_h, + int *x, int *y) +{ + struct mp_osd_res res = osd->objs[OSDTYPE_OSD]->vo_res; + int vidw = res.w - res.ml - res.mr; + int vidh = res.h - res.mt - res.mb; + double xscale = (double)vidw / frame_w; + double yscale = (double)vidh / frame_h; + // The OSD size + margins make up the scaled rectangle of the video. + *x = (*x - res.ml) / xscale; + *y = (*y - res.mt) / yscale; +} + // Position the subbitmaps in imgs on the screen. Basically, this fits the // subtitle canvas (of size frame_w x frame_h) onto the screen, such that it // fills the whole video area (especially if the video is magnified, e.g. on |