summaryrefslogtreecommitdiffstats
path: root/src/truetype
diff options
context:
space:
mode:
Diffstat (limited to 'src/truetype')
-rw-r--r--src/truetype/ttdriver.c3
-rw-r--r--src/truetype/ttgload.c354
-rw-r--r--src/truetype/ttgload.h1
-rw-r--r--src/truetype/ttinterp.c266
-rw-r--r--src/truetype/ttinterp.h10
-rw-r--r--src/truetype/ttobjs.c23
6 files changed, 454 insertions, 203 deletions
diff --git a/src/truetype/ttdriver.c b/src/truetype/ttdriver.c
index fb25706..36d23a2 100644
--- a/src/truetype/ttdriver.c
+++ b/src/truetype/ttdriver.c
@@ -215,7 +215,8 @@
FT_UShort ah;
- TT_Get_VMetrics( face, start + nn, &tsb, &ah );
+ /* since we don't need `tsb', we use zero for `yMax' parameter */
+ TT_Get_VMetrics( face, start + nn, 0, &tsb, &ah );
advances[nn] = ah;
}
}
diff --git a/src/truetype/ttgload.c b/src/truetype/ttgload.c
index f640a6c..b10e390 100644
--- a/src/truetype/ttgload.c
+++ b/src/truetype/ttgload.c
@@ -85,51 +85,36 @@
/*************************************************************************/
/* */
/* Return the vertical metrics in font units for a given glyph. */
- /* Greg Hitchcock from Microsoft told us that if there were no `vmtx' */
- /* table, typoAscender/Descender from the `OS/2' table would be used */
- /* instead, and if there were no `OS/2' table, use ascender/descender */
- /* from the `hhea' table. But that is not what Microsoft's rasterizer */
- /* apparently does: It uses the ppem value as the advance height, and */
- /* sets the top side bearing to be zero. */
+ /* See macro `TT_LOADER_SET_PP' below for explanations. */
/* */
FT_LOCAL_DEF( void )
TT_Get_VMetrics( TT_Face face,
FT_UInt idx,
+ FT_Pos yMax,
FT_Short* tsb,
FT_UShort* ah )
{
if ( face->vertical_info )
( (SFNT_Service)face->sfnt )->get_metrics( face, 1, idx, tsb, ah );
-#if 1 /* Empirically determined, at variance with what MS said */
-
- else
- {
- *tsb = 0;
- *ah = face->root.units_per_EM;
- }
-
-#else /* This is what MS said to do. It isn't what they do, however. */
-
else if ( face->os2.version != 0xFFFFU )
{
- *tsb = face->os2.sTypoAscender;
+ *tsb = face->os2.sTypoAscender - yMax;
*ah = face->os2.sTypoAscender - face->os2.sTypoDescender;
}
+
else
{
- *tsb = face->horizontal.Ascender;
+ *tsb = face->horizontal.Ascender - yMax;
*ah = face->horizontal.Ascender - face->horizontal.Descender;
}
-#endif
-
FT_TRACE5(( " advance height (font units): %d\n", *ah ));
FT_TRACE5(( " top side bearing (font units): %d\n", *tsb ));
}
- static void
+ static FT_Error
tt_get_metrics( TT_Loader loader,
FT_UInt glyph_index )
{
@@ -138,17 +123,28 @@
TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( face );
#endif
+ FT_Error error;
+ FT_Stream stream = loader->stream;
+
FT_Short left_bearing = 0, top_bearing = 0;
FT_UShort advance_width = 0, advance_height = 0;
+ /* we must preserve the stream position */
+ /* (which gets altered by the metrics functions) */
+ FT_ULong pos = FT_STREAM_POS();
+
TT_Get_HMetrics( face, glyph_index,
&left_bearing,
&advance_width );
TT_Get_VMetrics( face, glyph_index,
+ loader->bbox.yMax,
&top_bearing,
&advance_height );
+ if ( FT_STREAM_SEEK( pos ) )
+ return error;
+
loader->left_bearing = left_bearing;
loader->advance = advance_width;
loader->top_bearing = top_bearing;
@@ -171,6 +167,8 @@
loader->linear_def = 1;
loader->linear = advance_width;
}
+
+ return FT_Err_Ok;
}
@@ -350,9 +348,9 @@
FT_GlyphLoader gloader = load->gloader;
FT_Int n_contours = load->n_contours;
FT_Outline* outline;
- TT_Face face = (TT_Face)load->face;
FT_UShort n_ins;
FT_Int n_points;
+ FT_ULong tmp;
FT_Byte *flag, *flag_limit;
FT_Byte c, count;
@@ -418,14 +416,7 @@
FT_TRACE5(( " Instructions size: %u\n", n_ins ));
- if ( n_ins > face->max_profile.maxSizeOfInstructions )
- {
- FT_TRACE0(( "TT_Load_Simple_Glyph: too many instructions (%d)\n",
- n_ins ));
- error = FT_THROW( Too_Many_Hints );
- goto Fail;
- }
-
+ /* check it */
if ( ( limit - p ) < n_ins )
{
FT_TRACE0(( "TT_Load_Simple_Glyph: instruction count mismatch\n" ));
@@ -437,6 +428,20 @@
if ( IS_HINTED( load->load_flags ) )
{
+ /* we don't trust `maxSizeOfInstructions' in the `maxp' table */
+ /* and thus update the bytecode array size by ourselves */
+
+ tmp = load->exec->glyphSize;
+ error = Update_Max( load->exec->memory,
+ &tmp,
+ sizeof ( FT_Byte ),
+ (void*)&load->exec->glyphIns,
+ n_ins );
+
+ load->exec->glyphSize = (FT_UShort)tmp;
+ if ( error )
+ return error;
+
load->glyph->control_len = n_ins;
load->glyph->control_data = load->exec->glyphIns;
@@ -733,7 +738,6 @@
#endif
TT_GlyphZone zone = &loader->zone;
- FT_Pos origin;
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_UInt n_ins;
@@ -745,19 +749,12 @@
#ifdef TT_USE_BYTECODE_INTERPRETER
if ( loader->glyph->control_len > 0xFFFFL )
{
- FT_TRACE1(( "TT_Hint_Glyph: too long instructions " ));
- FT_TRACE1(( "(0x%lx byte) is truncated\n",
+ FT_TRACE1(( "TT_Hint_Glyph: too long instructions" ));
+ FT_TRACE1(( " (0x%lx byte) is truncated\n",
loader->glyph->control_len ));
}
n_ins = (FT_UInt)( loader->glyph->control_len );
-#endif
-
- origin = zone->cur[zone->n_points - 4].x;
- origin = FT_PIX_ROUND( origin ) - origin;
- if ( origin )
- translate_array( zone->n_points, zone->cur, origin, 0 );
-#ifdef TT_USE_BYTECODE_INTERPRETER
/* save original point position in org */
if ( n_ins > 0 )
FT_ARRAY_COPY( zone->org, zone->cur, zone->n_points );
@@ -783,9 +780,13 @@
}
#endif
- /* round pp2 and pp4 */
+ /* round phantom points */
+ zone->cur[zone->n_points - 4].x =
+ FT_PIX_ROUND( zone->cur[zone->n_points - 4].x );
zone->cur[zone->n_points - 3].x =
FT_PIX_ROUND( zone->cur[zone->n_points - 3].x );
+ zone->cur[zone->n_points - 2].y =
+ FT_PIX_ROUND( zone->cur[zone->n_points - 2].y );
zone->cur[zone->n_points - 1].y =
FT_PIX_ROUND( zone->cur[zone->n_points - 1].y );
@@ -823,13 +824,10 @@
#endif
/* save glyph phantom points */
- if ( !loader->preserve_pps )
- {
- loader->pp1 = zone->cur[zone->n_points - 4];
- loader->pp2 = zone->cur[zone->n_points - 3];
- loader->pp3 = zone->cur[zone->n_points - 2];
- loader->pp4 = zone->cur[zone->n_points - 1];
- }
+ loader->pp1 = zone->cur[zone->n_points - 4];
+ loader->pp2 = zone->cur[zone->n_points - 3];
+ loader->pp3 = zone->cur[zone->n_points - 2];
+ loader->pp4 = zone->cur[zone->n_points - 1];
#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 )
@@ -1077,9 +1075,9 @@
if ( !x && !y )
return FT_Err_Ok;
- /* Use a default value dependent on */
- /* TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED. This is useful for old TT */
- /* fonts which don't set the xxx_COMPONENT_OFFSET bit. */
+ /* Use a default value dependent on */
+ /* TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED. This is useful for old */
+ /* TT fonts which don't set the xxx_COMPONENT_OFFSET bit. */
if ( have_scale &&
#ifdef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
@@ -1091,10 +1089,10 @@
#if 0
- /*************************************************************************/
- /* */
- /* This algorithm is what Apple documents. But it doesn't work. */
- /* */
+ /*******************************************************************/
+ /* */
+ /* This algorithm is what Apple documents. But it doesn't work. */
+ /* */
int a = subglyph->transform.xx > 0 ? subglyph->transform.xx
: -subglyph->transform.xx;
int b = subglyph->transform.yx > 0 ? subglyph->transform.yx
@@ -1114,12 +1112,12 @@
x = FT_MulFix( x, m );
y = FT_MulFix( y, n );
-#else /* 0 */
+#else /* 1 */
- /*************************************************************************/
- /* */
- /* This algorithm is a guess and works much better than the above. */
- /* */
+ /*******************************************************************/
+ /* */
+ /* This algorithm is a guess and works much better than the above. */
+ /* */
FT_Fixed mac_xscale = FT_Hypot( subglyph->transform.xx,
subglyph->transform.xy );
FT_Fixed mac_yscale = FT_Hypot( subglyph->transform.yy,
@@ -1129,7 +1127,7 @@
x = FT_MulFix( x, mac_xscale );
y = FT_MulFix( y, mac_yscale );
-#endif /* 0 */
+#endif /* 1 */
}
@@ -1218,21 +1216,23 @@
max_ins = ((TT_Face)loader->face)->max_profile.maxSizeOfInstructions;
if ( n_ins > max_ins )
{
- /* acroread ignores this field, so we only do a rough safety check */
+ /* don't trust `maxSizeOfInstructions'; */
+ /* only do a rough safety check */
if ( (FT_Int)n_ins > loader->byte_len )
{
- FT_TRACE1(( "TT_Process_Composite_Glyph: "
- "too many instructions (%d) for glyph with length %d\n",
+ FT_TRACE1(( "TT_Process_Composite_Glyph:"
+ " too many instructions (%d) for glyph with length %d\n",
n_ins, loader->byte_len ));
return FT_THROW( Too_Many_Hints );
}
- tmp = loader->exec->glyphSize;
+ tmp = loader->exec->glyphSize;
error = Update_Max( loader->exec->memory,
&tmp,
sizeof ( FT_Byte ),
(void*)&loader->exec->glyphIns,
n_ins );
+
loader->exec->glyphSize = (FT_UShort)tmp;
if ( error )
return error;
@@ -1254,7 +1254,7 @@
/* Some points are likely touched during execution of */
/* instructions on components. So let's untouch them. */
- for ( i = start_point; i < loader->zone.n_points; i++ )
+ for ( i = 0; i < loader->zone.n_points; i++ )
loader->zone.tags[i] &= ~FT_CURVE_TAG_TOUCH_BOTH;
loader->zone.n_points += 4;
@@ -1263,21 +1263,131 @@
}
- /* Calculate the four phantom points. */
- /* The first two stand for horizontal origin and advance. */
- /* The last two stand for vertical origin and advance. */
+ /*
+ * Calculate the phantom points
+ *
+ * Defining the right side bearing (rsb) as
+ *
+ * rsb = aw - (lsb + xmax - xmin)
+ *
+ * (with `aw' the advance width, `lsb' the left side bearing, and `xmin'
+ * and `xmax' the glyph's minimum and maximum x value), the OpenType
+ * specification defines the initial position of horizontal phantom points
+ * as
+ *
+ * pp1 = (round(xmin - lsb), 0) ,
+ * pp2 = (round(pp1 + aw), 0) .
+ *
+ * Note that the rounding to the grid (in the device space) is not
+ * documented currently in the specification.
+ *
+ * However, the specification lacks the precise definition of vertical
+ * phantom points. Greg Hitchcock provided the following explanation.
+ *
+ * - a `vmtx' table is present
+ *
+ * For any glyph, the minimum and maximum y values (`ymin' and `ymax')
+ * are given in the `glyf' table, the top side bearing (tsb) and advance
+ * height (ah) are given in the `vmtx' table. The bottom side bearing
+ * (bsb) is then calculated as
+ *
+ * bsb = ah - (tsb + ymax - ymin) ,
+ *
+ * and the initial position of vertical phantom points is
+ *
+ * pp3 = (x, round(ymax + tsb)) ,
+ * pp4 = (x, round(pp3 - ah)) .
+ *
+ * See below for value `x'.
+ *
+ * - no `vmtx' table in the font
+ *
+ * If there is an `OS/2' table, we set
+ *
+ * DefaultAscender = sTypoAscender ,
+ * DefaultDescender = sTypoDescender ,
+ *
+ * otherwise we use data from the `hhea' table:
+ *
+ * DefaultAscender = Ascender ,
+ * DefaultDescender = Descender .
+ *
+ * With these two variables we can now set
+ *
+ * ah = DefaultAscender - sDefaultDescender ,
+ * tsb = DefaultAscender - yMax ,
+ *
+ * and proceed as if a `vmtx' table was present.
+ *
+ * Usually we have
+ *
+ * x = aw / 2 , (1)
+ *
+ * but there is one compatibility case where it can be set to
+ *
+ * x = -DefaultDescender -
+ * ((DefaultAscender - DefaultDescender - aw) / 2) . (2)
+ *
+ * and another one with
+ *
+ * x = 0 . (3)
+ *
+ * In Windows, the history of those values is quite complicated,
+ * depending on the hinting engine (that is, the graphics framework).
+ *
+ * framework from to formula
+ * ----------------------------------------------------------
+ * GDI Windows 98 current (1)
+ * (Windows 2000 for NT)
+ * GDI+ Windows XP Windows 7 (2)
+ * GDI+ Windows 8 current (3)
+ * DWrite Windows 7 current (3)
+ *
+ * For simplicity, FreeType uses (1) for grayscale subpixel hinting and
+ * (3) for everything else.
+ *
+ */
+#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
+
#define TT_LOADER_SET_PP( loader ) \
- do { \
+ do \
+ { \
+ FT_Bool subpixel_ = loader->exec ? loader->exec->subpixel \
+ : 0; \
+ FT_Bool grayscale_ = loader->exec ? loader->exec->grayscale \
+ : 0; \
+ FT_Bool use_aw_2_ = (FT_Bool)( subpixel_ && grayscale_ ); \
+ \
+ \
(loader)->pp1.x = (loader)->bbox.xMin - (loader)->left_bearing; \
(loader)->pp1.y = 0; \
(loader)->pp2.x = (loader)->pp1.x + (loader)->advance; \
(loader)->pp2.y = 0; \
+ \
+ (loader)->pp3.x = use_aw_2_ ? (loader)->advance / 2 : 0; \
+ (loader)->pp3.y = (loader)->bbox.yMax + (loader)->top_bearing; \
+ (loader)->pp4.x = use_aw_2_ ? (loader)->advance / 2 : 0; \
+ (loader)->pp4.y = (loader)->pp3.y - (loader)->vadvance; \
+ } while ( 0 )
+
+#else /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
+#define TT_LOADER_SET_PP( loader ) \
+ do \
+ { \
+ (loader)->pp1.x = (loader)->bbox.xMin - (loader)->left_bearing; \
+ (loader)->pp1.y = 0; \
+ (loader)->pp2.x = (loader)->pp1.x + (loader)->advance; \
+ (loader)->pp2.y = 0; \
+ \
(loader)->pp3.x = 0; \
- (loader)->pp3.y = (loader)->top_bearing + (loader)->bbox.yMax; \
+ (loader)->pp3.y = (loader)->bbox.yMax + (loader)->top_bearing; \
(loader)->pp4.x = 0; \
(loader)->pp4.y = (loader)->pp3.y - (loader)->vadvance; \
} while ( 0 )
+#endif /* !TT_CONFIG_OPTION_SUBPIXEL_HINTING */
+
/*************************************************************************/
/* */
@@ -1341,8 +1451,6 @@
y_scale = 0x10000L;
}
- tt_get_metrics( loader, glyph_index );
-
/* Set `offset' to the start of the glyph relative to the start of */
/* the `glyf' table, and `byte_len' to the length of the glyph in */
/* bytes. */
@@ -1402,7 +1510,17 @@
/* read glyph header first */
error = face->read_glyph_header( loader );
- if ( error || header_only )
+ if ( error )
+ goto Exit;
+
+ /* the metrics must be computed after loading the glyph header */
+ /* since we need the glyph's `yMax' value in case the vertical */
+ /* metrics must be emulated */
+ error = tt_get_metrics( loader, glyph_index );
+ if ( error )
+ goto Exit;
+
+ if ( header_only )
goto Exit;
}
@@ -1413,6 +1531,10 @@
loader->bbox.yMin = 0;
loader->bbox.yMax = 0;
+ error = tt_get_metrics( loader, glyph_index );
+ if ( error )
+ goto Exit;
+
if ( header_only )
goto Exit;
@@ -1437,21 +1559,32 @@
if ( error )
goto Exit;
- loader->pp1.x += deltas[0].x; loader->pp1.y += deltas[0].y;
- loader->pp2.x += deltas[1].x; loader->pp2.y += deltas[1].y;
- loader->pp3.x += deltas[2].x; loader->pp3.y += deltas[2].y;
- loader->pp4.x += deltas[3].x; loader->pp4.y += deltas[3].y;
+ loader->pp1.x += deltas[0].x;
+ loader->pp1.y += deltas[0].y;
+ loader->pp2.x += deltas[1].x;
+ loader->pp2.y += deltas[1].y;
+
+ loader->pp3.x += deltas[2].x;
+ loader->pp3.y += deltas[2].y;
+ loader->pp4.x += deltas[3].x;
+ loader->pp4.y += deltas[3].y;
FT_FREE( deltas );
}
-#endif
+#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
+ /* scale phantom points, if necessary; */
+ /* they get rounded in `TT_Hint_Glyph' */
if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
{
loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale );
loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale );
+ /* pp1.y and pp2.y are always zero */
+
+ loader->pp3.x = FT_MulFix( loader->pp3.x, x_scale );
loader->pp3.y = FT_MulFix( loader->pp3.y, y_scale );
+ loader->pp4.x = FT_MulFix( loader->pp4.x, x_scale );
loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale );
}
@@ -1459,8 +1592,8 @@
goto Exit;
}
- /* must initialize points before (possibly) overriding */
- /* glyph metrics from the incremental interface */
+ /* must initialize phantom points before (possibly) overriding */
+ /* glyph metrics from the incremental interface */
TT_LOADER_SET_PP( loader );
#ifdef FT_CONFIG_OPTION_INCREMENTAL
@@ -1533,7 +1666,7 @@
face,
glyph_index,
&deltas,
- gloader->current.num_subglyphs + 4 )) != 0 )
+ gloader->current.num_subglyphs + 4 ) ) != 0 )
goto Exit;
subglyph = gloader->current.subglyphs + gloader->base.num_subglyphs;
@@ -1551,21 +1684,32 @@
}
}
- loader->pp1.x += deltas[i + 0].x; loader->pp1.y += deltas[i + 0].y;
- loader->pp2.x += deltas[i + 1].x; loader->pp2.y += deltas[i + 1].y;
- loader->pp3.x += deltas[i + 2].x; loader->pp3.y += deltas[i + 2].y;
- loader->pp4.x += deltas[i + 3].x; loader->pp4.y += deltas[i + 3].y;
+ loader->pp1.x += deltas[i + 0].x;
+ loader->pp1.y += deltas[i + 0].y;
+ loader->pp2.x += deltas[i + 1].x;
+ loader->pp2.y += deltas[i + 1].y;
+
+ loader->pp3.x += deltas[i + 2].x;
+ loader->pp3.y += deltas[i + 2].y;
+ loader->pp4.x += deltas[i + 3].x;
+ loader->pp4.y += deltas[i + 3].y;
FT_FREE( deltas );
}
#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
+ /* scale phantom points, if necessary; */
+ /* they get rounded in `TT_Hint_Glyph' */
if ( ( loader->load_flags & FT_LOAD_NO_SCALE ) == 0 )
{
loader->pp1.x = FT_MulFix( loader->pp1.x, x_scale );
loader->pp2.x = FT_MulFix( loader->pp2.x, x_scale );
+ /* pp1.y and pp2.y are always zero */
+
+ loader->pp3.x = FT_MulFix( loader->pp3.x, x_scale );
loader->pp3.y = FT_MulFix( loader->pp3.y, y_scale );
+ loader->pp4.x = FT_MulFix( loader->pp4.x, x_scale );
loader->pp4.y = FT_MulFix( loader->pp4.y, y_scale );
}
@@ -1625,6 +1769,7 @@
/* restore subglyph pointer */
subglyph = gloader->base.subglyphs + num_base_subgs + n;
+ /* restore phantom points if necessary */
if ( !( subglyph->flags & USE_MY_METRICS ) )
{
loader->pp1 = pp[0];
@@ -1961,8 +2106,7 @@
#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
TT_Driver driver = (TT_Driver)FT_FACE_DRIVER( face );
- FT_Bool subpixel_hinting = FALSE;
- FT_Bool grayscale_hinting = TRUE;
+ FT_Bool subpixel = FALSE;
#if 0
/* not used yet */
@@ -1995,24 +2139,24 @@
if ( driver->interpreter_version == TT_INTERPRETER_VERSION_38 )
{
- subpixel_hinting = FT_BOOL( ( FT_LOAD_TARGET_MODE( load_flags )
- != FT_RENDER_MODE_MONO ) &&
- SPH_OPTION_SET_SUBPIXEL );
+ subpixel = FT_BOOL( ( FT_LOAD_TARGET_MODE( load_flags ) !=
+ FT_RENDER_MODE_MONO ) &&
+ SPH_OPTION_SET_SUBPIXEL );
- if ( subpixel_hinting )
- grayscale = grayscale_hinting = FALSE;
+ if ( subpixel )
+ grayscale = FALSE;
else if ( SPH_OPTION_SET_GRAYSCALE )
{
- grayscale = grayscale_hinting = TRUE;
- subpixel_hinting = FALSE;
+ grayscale = TRUE;
+ subpixel = FALSE;
}
else
- grayscale = grayscale_hinting = FALSE;
+ grayscale = FALSE;
if ( FT_IS_TRICKY( glyph->face ) )
- subpixel_hinting = grayscale_hinting = FALSE;
+ subpixel = FALSE;
- exec->ignore_x_mode = subpixel_hinting || grayscale_hinting;
+ exec->ignore_x_mode = subpixel || grayscale;
exec->rasterizer_version = SPH_OPTION_SET_RASTERIZER_VERSION;
if ( exec->sph_tweak_flags & SPH_TWEAK_RASTERIZER_35 )
exec->rasterizer_version = TT_INTERPRETER_VERSION_35;
@@ -2055,24 +2199,24 @@
{
/* a change from mono to subpixel rendering (and vice versa) */
/* requires a re-execution of the CVT program */
- if ( subpixel_hinting != exec->subpixel_hinting )
+ if ( subpixel != exec->subpixel )
{
FT_TRACE4(( "tt_loader_init: subpixel hinting change,"
" re-executing `prep' table\n" ));
- exec->subpixel_hinting = subpixel_hinting;
- reexecute = TRUE;
+ exec->subpixel = subpixel;
+ reexecute = TRUE;
}
/* a change from mono to grayscale rendering (and vice versa) */
/* requires a re-execution of the CVT program */
- if ( grayscale != exec->grayscale_hinting )
+ if ( grayscale != exec->grayscale )
{
FT_TRACE4(( "tt_loader_init: grayscale hinting change,"
" re-executing `prep' table\n" ));
- exec->grayscale_hinting = grayscale_hinting;
- reexecute = TRUE;
+ exec->grayscale = grayscale;
+ reexecute = TRUE;
}
}
else
@@ -2204,6 +2348,8 @@
error = FT_Err_Ok;
+ FT_TRACE1(( "TT_Load_Glyph: glyph index %d\n", glyph_index ));
+
#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
/* try to load embedded bitmap if any */
diff --git a/src/truetype/ttgload.h b/src/truetype/ttgload.h
index 05f7588..3f1699e 100644
--- a/src/truetype/ttgload.h
+++ b/src/truetype/ttgload.h
@@ -43,6 +43,7 @@ FT_BEGIN_HEADER
FT_LOCAL( void )
TT_Get_VMetrics( TT_Face face,
FT_UInt idx,
+ FT_Pos yMax,
FT_Short* tsb,
FT_UShort* ah );
diff --git a/src/truetype/ttinterp.c b/src/truetype/ttinterp.c
index 798d4a9..3f110c2 100644
--- a/src/truetype/ttinterp.c
+++ b/src/truetype/ttinterp.c
@@ -1437,9 +1437,108 @@
#undef PACK
-#if 1
+
+#ifndef FT_CONFIG_OPTION_NO_ASSEMBLER
+
+#if defined( __arm__ ) && \
+ ( defined( __thumb2__ ) || !defined( __thumb__ ) )
+
+#define TT_MulFix14 TT_MulFix14_arm
static FT_Int32
+ TT_MulFix14_arm( FT_Int32 a,
+ FT_Int b )
+ {
+ register FT_Int32 t, t2;
+
+
+#if defined( __CC_ARM ) || defined( __ARMCC__ )
+
+ __asm
+ {
+ smull t2, t, b, a /* (lo=t2,hi=t) = a*b */
+ mov a, t, asr #31 /* a = (hi >> 31) */
+ add a, a, #0x2000 /* a += 0x2000 */
+ adds t2, t2, a /* t2 += a */
+ adc t, t, #0 /* t += carry */
+ mov a, t2, lsr #14 /* a = t2 >> 14 */
+ orr a, a, t, lsl #18 /* a |= t << 18 */
+ }
+
+#elif defined( __GNUC__ )
+
+ __asm__ __volatile__ (
+ "smull %1, %2, %4, %3\n\t" /* (lo=%1,hi=%2) = a*b */
+ "mov %0, %2, asr #31\n\t" /* %0 = (hi >> 31) */
+#ifdef __clang__
+ "add.w %0, %0, #0x2000\n\t" /* %0 += 0x2000 */
+#else
+ "add %0, %0, #0x2000\n\t" /* %0 += 0x2000 */
+#endif
+ "adds %1, %1, %0\n\t" /* %1 += %0 */
+ "adc %2, %2, #0\n\t" /* %2 += carry */
+ "mov %0, %1, lsr #14\n\t" /* %0 = %1 >> 16 */
+ "orr %0, %0, %2, lsl #18\n\t" /* %0 |= %2 << 16 */
+ : "=r"(a), "=&r"(t2), "=&r"(t)
+ : "r"(a), "r"(b)
+ : "cc" );
+
+#endif
+
+ return a;
+ }
+
+#endif /* __arm__ && ( __thumb2__ || !__thumb__ ) */
+
+#endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */
+
+
+#if defined( __GNUC__ ) && \
+ ( defined( __i386__ ) || defined( __x86_64__ ) )
+
+#define TT_MulFix14 TT_MulFix14_long_long
+
+ /* Temporarily disable the warning that C90 doesn't support `long long'. */
+#if ( __GNUC__ * 100 + __GNUC_MINOR__ ) >= 406
+#pragma GCC diagnostic push
+#endif
+#pragma GCC diagnostic ignored "-Wlong-long"
+
+ /* This is declared `noinline' because inlining the function results */
+ /* in slower code. The `pure' attribute indicates that the result */
+ /* only depends on the parameters. */
+ static __attribute__(( noinline ))
+ __attribute__(( pure )) FT_Int32
+ TT_MulFix14_long_long( FT_Int32 a,
+ FT_Int b )
+ {
+
+ long long ret = (long long)a * b;
+
+ /* The following line assumes that right shifting of signed values */
+ /* will actually preserve the sign bit. The exact behaviour is */
+ /* undefined, but this is true on x86 and x86_64. */
+ long long tmp = ret >> 63;
+
+
+ ret += 0x2000 + tmp;
+
+ return (FT_Int32)( ret >> 14 );
+ }
+
+#if ( __GNUC__ * 100 + __GNUC_MINOR__ ) >= 406
+#pragma GCC diagnostic pop
+#endif
+
+#endif /* __GNUC__ && ( __i386__ || __x86_64__ ) */
+
+
+#ifndef TT_MulFix14
+
+ /* Compute (a*b)/2^14 with maximum accuracy and rounding. */
+ /* This is optimized to be faster than calling FT_MulFix() */
+ /* for platforms where sizeof(int) == 2. */
+ static FT_Int32
TT_MulFix14( FT_Int32 a,
FT_Int b )
{
@@ -1470,37 +1569,50 @@
return sign >= 0 ? (FT_Int32)mid : -(FT_Int32)mid;
}
-#else
+#endif /* !TT_MulFix14 */
- /* compute (a*b)/2^14 with maximum accuracy and rounding */
- static FT_Int32
- TT_MulFix14( FT_Int32 a,
- FT_Int b )
- {
- FT_Int32 m, s, hi;
- FT_UInt32 l, lo;
+#if defined( __GNUC__ ) && \
+ ( defined( __i386__ ) || \
+ defined( __x86_64__ ) || \
+ defined( __arm__ ) )
- /* compute ax*bx as 64-bit value */
- l = (FT_UInt32)( ( a & 0xFFFFU ) * b );
- m = ( a >> 16 ) * b;
+#define TT_DotFix14 TT_DotFix14_long_long
- lo = l + ( (FT_UInt32)m << 16 );
- hi = ( m >> 16 ) + ( (FT_Int32)l >> 31 ) + ( lo < l );
+#if ( __GNUC__ * 100 + __GNUC_MINOR__ ) >= 406
+#pragma GCC diagnostic push
+#endif
+#pragma GCC diagnostic ignored "-Wlong-long"
- /* divide the result by 2^14 with rounding */
- s = hi >> 31;
- l = lo + (FT_UInt32)s;
- hi += s + ( l < lo );
- lo = l;
+ static __attribute__(( pure )) FT_Int32
+ TT_DotFix14_long_long( FT_Int32 ax,
+ FT_Int32 ay,
+ FT_Int bx,
+ FT_Int by )
+ {
+ /* Temporarily disable the warning that C90 doesn't support */
+ /* `long long'. */
- l = lo + 0x2000U;
- hi += l < lo;
+ long long temp1 = (long long)ax * bx;
+ long long temp2 = (long long)ay * by;
+
+
+ temp1 += temp2;
+ temp2 = temp1 >> 63;
+ temp1 += 0x2000 + temp2;
+
+ return (FT_Int32)( temp1 >> 14 );
- return (FT_Int32)( ( (FT_UInt32)hi << 18 ) | ( l >> 14 ) );
}
+
+#if ( __GNUC__ * 100 + __GNUC_MINOR__ ) >= 406
+#pragma GCC diagnostic pop
#endif
+#endif /* __GNUC__ && (__arm__ || __i386__ || __x86_64__) */
+
+
+#ifndef TT_DotFix14
/* compute (ax*bx+ay*by)/2^14 with maximum accuracy and rounding */
static FT_Int32
@@ -1543,6 +1655,8 @@
return (FT_Int32)( ( (FT_UInt32)hi << 18 ) | ( l >> 14 ) );
}
+#endif /* TT_DotFix14 */
+
/*************************************************************************/
/* */
@@ -3037,42 +3151,42 @@
}
-#define DO_JROT \
- if ( args[1] != 0 ) \
- { \
- if ( args[0] == 0 && CUR.args == 0 ) \
- CUR.error = FT_THROW( Bad_Argument ); \
- CUR.IP += args[0]; \
- if ( CUR.IP < 0 || \
- ( CUR.callTop > 0 && \
- CUR.IP > CUR.callStack[CUR.callTop - 1].Cur_End ) ) \
- CUR.error = FT_THROW( Bad_Argument ); \
- CUR.step_ins = FALSE; \
+#define DO_JROT \
+ if ( args[1] != 0 ) \
+ { \
+ if ( args[0] == 0 && CUR.args == 0 ) \
+ CUR.error = FT_THROW( Bad_Argument ); \
+ CUR.IP += args[0]; \
+ if ( CUR.IP < 0 || \
+ ( CUR.callTop > 0 && \
+ CUR.IP > CUR.callStack[CUR.callTop - 1].Def->end ) ) \
+ CUR.error = FT_THROW( Bad_Argument ); \
+ CUR.step_ins = FALSE; \
}
-#define DO_JMPR \
- if ( args[0] == 0 && CUR.args == 0 ) \
- CUR.error = FT_THROW( Bad_Argument ); \
- CUR.IP += args[0]; \
- if ( CUR.IP < 0 || \
- ( CUR.callTop > 0 && \
- CUR.IP > CUR.callStack[CUR.callTop - 1].Cur_End ) ) \
- CUR.error = FT_THROW( Bad_Argument ); \
+#define DO_JMPR \
+ if ( args[0] == 0 && CUR.args == 0 ) \
+ CUR.error = FT_THROW( Bad_Argument ); \
+ CUR.IP += args[0]; \
+ if ( CUR.IP < 0 || \
+ ( CUR.callTop > 0 && \
+ CUR.IP > CUR.callStack[CUR.callTop - 1].Def->end ) ) \
+ CUR.error = FT_THROW( Bad_Argument ); \
CUR.step_ins = FALSE;
-#define DO_JROF \
- if ( args[1] == 0 ) \
- { \
- if ( args[0] == 0 && CUR.args == 0 ) \
- CUR.error = FT_THROW( Bad_Argument ); \
- CUR.IP += args[0]; \
- if ( CUR.IP < 0 || \
- ( CUR.callTop > 0 && \
- CUR.IP > CUR.callStack[CUR.callTop - 1].Cur_End ) ) \
- CUR.error = FT_THROW( Bad_Argument ); \
- CUR.step_ins = FALSE; \
+#define DO_JROF \
+ if ( args[1] == 0 ) \
+ { \
+ if ( args[0] == 0 && CUR.args == 0 ) \
+ CUR.error = FT_THROW( Bad_Argument ); \
+ CUR.IP += args[0]; \
+ if ( CUR.IP < 0 || \
+ ( CUR.callTop > 0 && \
+ CUR.IP > CUR.callStack[CUR.callTop - 1].Def->end ) ) \
+ CUR.error = FT_THROW( Bad_Argument ); \
+ CUR.step_ins = FALSE; \
}
@@ -4788,7 +4902,7 @@
if ( pRec->Cur_Count > 0 )
{
CUR.callTop++;
- CUR.IP = pRec->Cur_Restart;
+ CUR.IP = pRec->Def->start;
}
else
/* Loop through the current function */
@@ -4878,8 +4992,7 @@
pCrec->Caller_Range = CUR.curRange;
pCrec->Caller_IP = CUR.IP + 1;
pCrec->Cur_Count = 1;
- pCrec->Cur_Restart = def->start;
- pCrec->Cur_End = def->end;
+ pCrec->Def = def;
CUR.callTop++;
@@ -4967,8 +5080,7 @@
pCrec->Caller_Range = CUR.curRange;
pCrec->Caller_IP = CUR.IP + 1;
pCrec->Cur_Count = (FT_Int)args[0];
- pCrec->Cur_Restart = def->start;
- pCrec->Cur_End = def->end;
+ pCrec->Def = def;
CUR.callTop++;
@@ -6173,7 +6285,7 @@
FT_F26Dot6 distance;
#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
- FT_F26Dot6 control_value_cutin;
+ FT_F26Dot6 control_value_cutin = 0; /* pacify compiler */
if ( SUBPIXEL_HINTING )
@@ -6542,8 +6654,8 @@
control_value_cutin,
minimum_distance;
#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
- FT_Int B1;
- FT_Int B2;
+ FT_Int B1 = 0; /* pacify compiler */
+ FT_Int B2 = 0;
FT_Bool reverse_move = FALSE;
#endif /* TT_CONFIG_OPTION_SUBPIXEL_HINTING */
@@ -7708,26 +7820,16 @@
CUR.ignore_x_mode &&
CUR.rasterizer_version >= TT_INTERPRETER_VERSION_35 )
{
- /********************************/
- /* HINTING FOR GRAYSCALE */
- /* Selector Bit: 5 */
- /* Return Bit(s): 12 */
- /* */
- if ( ( args[0] & 32 ) != 0 && CUR.grayscale_hinting )
- K |= 1 << 12;
-
- /********************************/
- /* HINTING FOR SUBPIXEL */
- /* Selector Bit: 6 */
- /* Return Bit(s): 13 */
- /* */
- if ( ( args[0] & 64 ) != 0 &&
- CUR.subpixel_hinting &&
- CUR.rasterizer_version >= 37 )
- {
- K |= 1 << 13;
- /* the stuff below is irrelevant if subpixel_hinting is not set */
+ if ( CUR.rasterizer_version >= 37 )
+ {
+ /********************************/
+ /* HINTING FOR SUBPIXEL */
+ /* Selector Bit: 6 */
+ /* Return Bit(s): 13 */
+ /* */
+ if ( ( args[0] & 64 ) != 0 && CUR.subpixel )
+ K |= 1 << 13;
/********************************/
/* COMPATIBLE WIDTHS ENABLED */
@@ -7803,8 +7905,7 @@
call->Caller_Range = CUR.curRange;
call->Caller_IP = CUR.IP + 1;
call->Cur_Count = 1;
- call->Cur_Restart = def->start;
- call->Cur_End = def->end;
+ call->Def = def;
INS_Goto_CodeRange( def->range, def->start );
@@ -8860,8 +8961,7 @@
callrec->Caller_Range = CUR.curRange;
callrec->Caller_IP = CUR.IP + 1;
callrec->Cur_Count = 1;
- callrec->Cur_Restart = def->start;
- callrec->Cur_End = def->end;
+ callrec->Def = def;
if ( INS_Goto_CodeRange( def->range, def->start ) == FAILURE )
goto LErrorLabel_;
diff --git a/src/truetype/ttinterp.h b/src/truetype/ttinterp.h
index 69f5011..1d8825d 100644
--- a/src/truetype/ttinterp.h
+++ b/src/truetype/ttinterp.h
@@ -101,8 +101,8 @@ FT_BEGIN_HEADER
FT_Int Caller_Range;
FT_Long Caller_IP;
FT_Long Cur_Count;
- FT_Long Cur_Restart;
- FT_Long Cur_End;
+
+ TT_DefRecord *Def; /* either FDEF or IDEF */
} TT_CallRec, *TT_CallStack;
@@ -263,12 +263,10 @@ FT_BEGIN_HEADER
#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
TT_Round_Func func_round_sphn; /* subpixel rounding function */
- FT_Bool grayscale_hinting; /* Using grayscale hinting? */
- FT_Bool subpixel_hinting; /* Using subpixel hinting? */
- FT_Bool native_hinting; /* Using native hinting? */
+ FT_Bool subpixel; /* Using subpixel hinting? */
FT_Bool ignore_x_mode; /* Standard rendering mode for */
/* subpixel hinting. On if gray */
- /* or subpixel hinting is on ) */
+ /* or subpixel hinting is on. */
/* The following 4 aren't fully implemented but here for MS rasterizer */
/* compatibility. */
diff --git a/src/truetype/ttobjs.c b/src/truetype/ttobjs.c
index 7897efa..4adba58 100644
--- a/src/truetype/ttobjs.c
+++ b/src/truetype/ttobjs.c
@@ -150,20 +150,21 @@
tt_check_trickyness_family( FT_String* name )
{
-#define TRICK_NAMES_MAX_CHARACTERS 16
-#define TRICK_NAMES_COUNT 8
+#define TRICK_NAMES_MAX_CHARACTERS 19
+#define TRICK_NAMES_COUNT 9
static const char trick_names[TRICK_NAMES_COUNT]
[TRICK_NAMES_MAX_CHARACTERS + 1] =
{
- "DFKaiSho-SB", /* dfkaisb.ttf */
+ "DFKaiSho-SB", /* dfkaisb.ttf */
"DFKaiShu",
- "DFKai-SB", /* kaiu.ttf */
- "HuaTianKaiTi?", /* htkt2.ttf */
- "HuaTianSongTi?", /* htst3.ttf */
- "MingLiU", /* mingliu.ttf & mingliu.ttc */
- "PMingLiU", /* mingliu.ttc */
- "MingLi43", /* mingli.ttf */
+ "DFKai-SB", /* kaiu.ttf */
+ "HuaTianKaiTi?", /* htkt2.ttf */
+ "HuaTianSongTi?", /* htst3.ttf */
+ "Ming(for ISO10646)", /* hkscsiic.ttf & iicore.ttf */
+ "MingLiU", /* mingliu.ttf & mingliu.ttc */
+ "PMingLiU", /* mingliu.ttc */
+ "MingLi43", /* mingli.ttf */
};
int nn;
@@ -532,6 +533,10 @@
/* check that we have a valid TrueType file */
error = sfnt->init_face( stream, face, face_index, num_params, params );
+
+ /* Stream may have changed. */
+ stream = face->root.stream;
+
if ( error )
goto Exit;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 06:45:18 +0000