sub: use Unicode linebreaking for non-ASS subs and OSD

ASS must only automatically break at ASCII spaces (\x20), but other
subtitle formats might expect more breaking oppurtinities.
Especially non-ASS subs in scripts, which typically do not use (ASCII)
spaces to seperate words, like e.g. CJK, might overflow the screen
if the conversion didn't insert additional linebreaks (ffmpeg does not).

Thus try to enable Unicode linebreaking for converted subs and the OSD
if libass is new enough. The feature may still be unavailable at runtime
if libass wasn't build with Unicode linebreaking support.
This commit is contained in:
Oneric 2022-08-31 13:46:17 +00:00 committed by sfan5
parent ba81e4ed88
commit 9e3ec04d56
2 changed files with 7 additions and 1 deletions

View File

@ -133,7 +133,9 @@ static void create_ass_track(struct osd_state *osd, struct osd_object *obj,
track->WrapStyle = 1; // end-of-line wrapping instead of smart wrapping
track->Kerning = true;
track->ScaledBorderAndShadow = true;
#if LIBASS_VERSION >= 0x01600010
ass_track_set_feature(track, ASS_FEATURE_WRAP_UNICODE, 1);
#endif
update_playres(ass, &obj->vo_res);
}

View File

@ -442,6 +442,10 @@ static void configure_ass(struct sd *sd, struct mp_osd_res *dim,
ass_set_font_scale(priv, set_font_scale);
ass_set_hinting(priv, set_hinting);
ass_set_line_spacing(priv, set_line_spacing);
#if LIBASS_VERSION >= 0x01600010
if (converted)
ass_track_set_feature(track, ASS_FEATURE_WRAP_UNICODE, 1);
#endif
}
static bool has_overrides(char *s)