sub: add justify of subtitles

To make it easier for the eyes, multi line subtitles should
be left justified (for most languages).
This adds an option to define how subtitles are to be justified
inpendently of how they are aligned.
Also add option to enable --sub-justify to be applied on ASS subtitles.

1 files changed, 1 insertions, 0 deletions

diff --git a/sub/osd.h b/sub/osd.h
index aef1c60b33..7572ec0360 100644
--- a/sub/osd.h
+++ b/sub/osd.h
@@ -134,6 +134,7 @@ struct osd_style_opts {
     float blur;
     int bold;
     int italic;
+    int justify;
 };
 
 extern const struct m_sub_options osd_style_conf;