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Diffstat (limited to 'Build/source/libs/freetype2/freetype-src/src/truetype/ttinterp.c')
-rw-r--r--Build/source/libs/freetype2/freetype-src/src/truetype/ttinterp.c91
1 files changed, 65 insertions, 26 deletions
diff --git a/Build/source/libs/freetype2/freetype-src/src/truetype/ttinterp.c b/Build/source/libs/freetype2/freetype-src/src/truetype/ttinterp.c
index d855aaaa9c6..da9b595aba0 100644
--- a/Build/source/libs/freetype2/freetype-src/src/truetype/ttinterp.c
+++ b/Build/source/libs/freetype2/freetype-src/src/truetype/ttinterp.c
@@ -2165,7 +2165,7 @@
val = ADD_LONG( distance,
exc->threshold - exc->phase + compensation ) &
-exc->period;
- val += exc->phase;
+ val = ADD_LONG( val, exc->phase );
if ( val < 0 )
val = exc->phase;
}
@@ -2174,7 +2174,7 @@
val = NEG_LONG( SUB_LONG( exc->threshold - exc->phase + compensation,
distance ) &
-exc->period );
- val -= exc->phase;
+ val = SUB_LONG( val, exc->phase );
if ( val > 0 )
val = -exc->phase;
}
@@ -2216,7 +2216,7 @@
val = ( ADD_LONG( distance,
exc->threshold - exc->phase + compensation ) /
exc->period ) * exc->period;
- val += exc->phase;
+ val = ADD_LONG( val, exc->phase );
if ( val < 0 )
val = exc->phase;
}
@@ -2225,7 +2225,7 @@
val = NEG_LONG( ( SUB_LONG( exc->threshold - exc->phase + compensation,
distance ) /
exc->period ) * exc->period );
- val -= exc->phase;
+ val = SUB_LONG( val, exc->phase );
if ( val > 0 )
val = -exc->phase;
}
@@ -2954,7 +2954,7 @@
static void
Ins_CEILING( FT_Long* args )
{
- args[0] = FT_PIX_CEIL( args[0] );
+ args[0] = FT_PIX_CEIL_LONG( args[0] );
}
@@ -3289,7 +3289,10 @@
if ( args[0] < 0 )
exc->error = FT_THROW( Bad_Argument );
else
- exc->GS.loop = args[0];
+ {
+ /* we heuristically limit the number of loops to 16 bits */
+ exc->GS.loop = args[0] > 0xFFFFL ? 0xFFFFL : args[0];
+ }
}
@@ -5782,6 +5785,7 @@
FT_F26Dot6 distance;
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
FT_F26Dot6 control_value_cutin = 0;
+ FT_F26Dot6 delta;
if ( SUBPIXEL_HINTING_INFINALITY )
@@ -5817,11 +5821,15 @@
distance = PROJECT( exc->zp1.cur + point, exc->zp0.cur + exc->GS.rp0 );
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
+ delta = SUB_LONG( distance, args[1] );
+ if ( delta < 0 )
+ delta = NEG_LONG( delta );
+
/* subpixel hinting - make MSIRP respect CVT cut-in; */
- if ( SUBPIXEL_HINTING_INFINALITY &&
- exc->ignore_x_mode &&
- exc->GS.freeVector.x != 0 &&
- FT_ABS( SUB_LONG( distance, args[1] ) ) >= control_value_cutin )
+ if ( SUBPIXEL_HINTING_INFINALITY &&
+ exc->ignore_x_mode &&
+ exc->GS.freeVector.x != 0 &&
+ delta >= control_value_cutin )
distance = args[1];
#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */
@@ -5869,16 +5877,18 @@
if ( SUBPIXEL_HINTING_INFINALITY &&
exc->ignore_x_mode &&
exc->GS.freeVector.x != 0 )
- distance = Round_None(
- exc,
- cur_dist,
- exc->tt_metrics.compensations[0] ) - cur_dist;
+ distance = SUB_LONG(
+ Round_None( exc,
+ cur_dist,
+ exc->tt_metrics.compensations[0] ),
+ cur_dist );
else
#endif
- distance = exc->func_round(
- exc,
- cur_dist,
- exc->tt_metrics.compensations[0] ) - cur_dist;
+ distance = SUB_LONG(
+ exc->func_round( exc,
+ cur_dist,
+ exc->tt_metrics.compensations[0] ),
+ cur_dist );
}
else
distance = 0;
@@ -5978,7 +5988,14 @@
if ( ( exc->opcode & 1 ) != 0 ) /* rounding and control cut-in flag */
{
- if ( FT_ABS( distance - org_dist ) > control_value_cutin )
+ FT_F26Dot6 delta;
+
+
+ delta = SUB_LONG( distance, org_dist );
+ if ( delta < 0 )
+ delta = NEG_LONG( delta );
+
+ if ( delta > control_value_cutin )
distance = org_dist;
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
@@ -6176,7 +6193,7 @@
minimum_distance = exc->GS.minimum_distance;
control_value_cutin = exc->GS.control_value_cutin;
point = (FT_UShort)args[0];
- cvtEntry = (FT_ULong)( args[1] + 1 );
+ cvtEntry = (FT_ULong)( ADD_LONG( args[1], 1 ) );
#ifdef TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
if ( SUBPIXEL_HINTING_INFINALITY &&
@@ -6259,6 +6276,9 @@
if ( exc->GS.gep0 == exc->GS.gep1 )
{
+ FT_F26Dot6 delta;
+
+
/* XXX: According to Greg Hitchcock, the following wording is */
/* the right one: */
/* */
@@ -6271,7 +6291,11 @@
/* `ttinst2.doc', version 1.66, is thus incorrect since */
/* it implies `>=' instead of `>'. */
- if ( FT_ABS( cvt_dist - org_dist ) > control_value_cutin )
+ delta = SUB_LONG( cvt_dist, org_dist );
+ if ( delta < 0 )
+ delta = NEG_LONG( delta );
+
+ if ( delta > control_value_cutin )
cvt_dist = org_dist;
}
@@ -6289,7 +6313,14 @@
exc->ignore_x_mode &&
exc->GS.gep0 == exc->GS.gep1 )
{
- if ( FT_ABS( cvt_dist - org_dist ) > control_value_cutin )
+ FT_F26Dot6 delta;
+
+
+ delta = SUB_LONG( cvt_dist, org_dist );
+ if ( delta < 0 )
+ delta = NEG_LONG( delta );
+
+ if ( delta > control_value_cutin )
cvt_dist = org_dist;
}
#endif /* TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY */
@@ -7532,8 +7563,16 @@
return;
}
- for ( i = 0; i < num_axes; i++ )
- args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
+ if ( coords )
+ {
+ for ( i = 0; i < num_axes; i++ )
+ args[i] = coords[i] >> 2; /* convert 16.16 to 2.14 format */
+ }
+ else
+ {
+ for ( i = 0; i < num_axes; i++ )
+ args[i] = 0;
+ }
}
@@ -8487,8 +8526,8 @@
LNo_Error_:
FT_TRACE4(( " %d instruction%s executed\n",
- ins_counter == 1 ? "" : "s",
- ins_counter ));
+ ins_counter,
+ ins_counter == 1 ? "" : "s" ));
return FT_Err_Ok;
LErrorCodeOverflow_: