Runtime shaper selection

Add an API call, ass_set_shaper, and infrastructure to make shapers
selectable at runtime. Currently, this allows to switch between two
shapers: a SIMPLE shaper that maps to FriBidi and a COMPLEX shaper that
maps to HarfBuzz.

1 files changed, 1 insertions, 0 deletions

diff --git a/libass/ass_render.h b/libass/ass_render.h
index 05c4974..d3c1bbb 100644
--- a/libass/ass_render.h
+++ b/libass/ass_render.h
@@ -76,6 +76,7 @@ typedef struct {
     double aspect;              // frame aspect ratio, d_width / d_height.
     double storage_aspect;      // pixel ratio of the source image
     ASS_Hinting hinting;
+    ASS_ShapingLevel shaper;
 
     char *default_font;
     char *default_family;