[autofit] Add embedded arrays for points and contours.

This avoids at least two malloc calls for typical glyphs.

* src/autofit/afhints.h (AF_POINTS_EMBEDDED, AF_CONTOURS_EMBEDDED):
New macros.
(AF_GlyphHintsRec): Add two arrays for contours and points.

* src/autofit/afhints.c (af_glyph_hints_init, af_glyph_hints_done):
Updated.
(af_glyph_hints_reload): Only allocate data if number of contours or
points exceeds given threshold values.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/autofit/afhints.h b/src/autofit/afhints.h
index 92101de7c..01e9d706e 100644
--- a/src/autofit/afhints.h
+++ b/src/autofit/afhints.h
@@ -324,6 +324,9 @@ FT_BEGIN_HEADER
   } AF_AxisHintsRec, *AF_AxisHints;
 
 
+#define AF_POINTS_EMBEDDED     96   /* number of embedded points   */
+#define AF_CONTOURS_EMBEDDED    8   /* number of embedded contours */
+
   typedef struct  AF_GlyphHintsRec_
   {
     FT_Memory        memory;
@@ -352,6 +355,14 @@ FT_BEGIN_HEADER
     FT_Pos           xmin_delta;    /* used for warping */
     FT_Pos           xmax_delta;
 
+    /* Two arrays to avoid allocation penalty.            */
+    /* The `embedded' structure must be the last element! */
+    struct
+    {
+      AF_Point       contours[AF_CONTOURS_EMBEDDED];
+      AF_PointRec    points[AF_POINTS_EMBEDDED];
+    } embedded;
+
   } AF_GlyphHintsRec;