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Diffstat (limited to 'freetype/src/raster/ftraster.c')
-rwxr-xr-x[-rw-r--r--]freetype/src/raster/ftraster.c117
1 files changed, 72 insertions, 45 deletions
diff --git a/freetype/src/raster/ftraster.c b/freetype/src/raster/ftraster.c
index 56d1f45a2..cd442d69c 100644..100755
--- a/freetype/src/raster/ftraster.c
+++ b/freetype/src/raster/ftraster.c
@@ -4,7 +4,7 @@
/* */
/* The FreeType glyph rasterizer (body). */
/* */
-/* Copyright 1996-2003, 2005, 2007-2012 by */
+/* Copyright 1996-2003, 2005, 2007-2013 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -179,6 +179,9 @@
#ifdef _STANDALONE_
+ /* Auxiliary macros for token concatenation. */
+#define FT_ERR_XCAT( x, y ) x ## y
+#define FT_ERR_CAT( x, y ) FT_ERR_XCAT( x, y )
/* This macro is used to indicate that a function parameter is unused. */
/* Its purpose is simply to reduce compiler warnings. Note also that */
@@ -187,7 +190,7 @@
#define FT_UNUSED( x ) (x) = (x)
/* Disable the tracing mechanism for simplicity -- developers can */
- /* activate it easily by redefining these two macros. */
+ /* activate it easily by redefining these macros. */
#ifndef FT_ERROR
#define FT_ERROR( x ) do { } while ( 0 ) /* nothing */
#endif
@@ -198,6 +201,10 @@
#define FT_TRACE6( x ) do { } while ( 0 ) /* nothing */
#endif
+#ifndef FT_THROW
+#define FT_THROW( e ) FT_ERR_CAT( Raster_Err_, e )
+#endif
+
#define Raster_Err_None 0
#define Raster_Err_Not_Ini -1
#define Raster_Err_Overflow -2
@@ -224,11 +231,11 @@
#include <freetype/internal/ftobjs.h>
-#include <freetype/internal/ftdebug.h> /* for FT_TRACE() and FT_ERROR() */
+#include <freetype/internal/ftdebug.h> /* for FT_TRACE, FT_ERROR, and FT_THROW */
#include "rasterrs.h"
-#define Raster_Err_None Raster_Err_Ok
+#define Raster_Err_None FT_Err_Ok
#define Raster_Err_Not_Ini Raster_Err_Raster_Uninitialized
#define Raster_Err_Overflow Raster_Err_Raster_Overflow
#define Raster_Err_Neg_Height Raster_Err_Raster_Negative_Height
@@ -303,6 +310,7 @@
typedef short Short;
typedef unsigned short UShort, *PUShort;
typedef long Long, *PLong;
+ typedef unsigned long ULong;
typedef unsigned char Byte, *PByte;
typedef char Bool;
@@ -441,12 +449,14 @@
#define FLOOR( x ) ( (x) & -ras.precision )
#define CEILING( x ) ( ( (x) + ras.precision - 1 ) & -ras.precision )
-#define TRUNC( x ) ( (signed long)(x) >> ras.precision_bits )
+#define TRUNC( x ) ( (Long)(x) >> ras.precision_bits )
#define FRAC( x ) ( (x) & ( ras.precision - 1 ) )
-#define SCALED( x ) ( ( (x) << ras.scale_shift ) - ras.precision_half )
+#define SCALED( x ) ( ( (ULong)(x) << ras.scale_shift ) - ras.precision_half )
-#define IS_BOTTOM_OVERSHOOT( x ) ( CEILING( x ) - x >= ras.precision_half )
-#define IS_TOP_OVERSHOOT( x ) ( x - FLOOR( x ) >= ras.precision_half )
+#define IS_BOTTOM_OVERSHOOT( x ) \
+ (Bool)( CEILING( x ) - x >= ras.precision_half )
+#define IS_TOP_OVERSHOOT( x ) \
+ (Bool)( x - FLOOR( x ) >= ras.precision_half )
/* The most used variables are positioned at the top of the structure. */
/* Thus, their offset can be coded with less opcodes, resulting in a */
@@ -655,7 +665,7 @@
/* Set precision variables according to param flag. */
/* */
/* <Input> */
- /* High :: Set to True for high precision (typically for ppem < 18), */
+ /* High :: Set to True for high precision (typically for ppem < 24), */
/* false otherwise. */
/* */
static void
@@ -735,7 +745,7 @@
if ( ras.top >= ras.maxBuff )
{
- ras.error = Raster_Err_Overflow;
+ ras.error = FT_THROW( Overflow );
return FAILURE;
}
@@ -765,7 +775,7 @@
default:
FT_ERROR(( "New_Profile: invalid profile direction\n" ));
- ras.error = Raster_Err_Invalid;
+ ras.error = FT_THROW( Invalid );
return FAILURE;
}
@@ -798,8 +808,7 @@
static Bool
End_Profile( RAS_ARGS Bool overshoot )
{
- Long h;
- PProfile oldProfile;
+ Long h;
h = (Long)( ras.top - ras.cProfile->offset );
@@ -807,12 +816,15 @@
if ( h < 0 )
{
FT_ERROR(( "End_Profile: negative height encountered\n" ));
- ras.error = Raster_Err_Neg_Height;
+ ras.error = FT_THROW( Neg_Height );
return FAILURE;
}
if ( h > 0 )
{
+ PProfile oldProfile;
+
+
FT_TRACE6(( "Ending profile %p, start = %ld, height = %ld\n",
ras.cProfile, ras.cProfile->start, h ));
@@ -840,7 +852,7 @@
if ( ras.top >= ras.maxBuff )
{
FT_TRACE1(( "overflow in End_Profile\n" ));
- ras.error = Raster_Err_Overflow;
+ ras.error = FT_THROW( Overflow );
return FAILURE;
}
@@ -869,7 +881,7 @@
Insert_Y_Turn( RAS_ARGS Int y )
{
PLong y_turns;
- Int y2, n;
+ Int n;
n = ras.numTurns - 1;
@@ -883,7 +895,9 @@
if ( n >= 0 && y > y_turns[n] )
while ( n >= 0 )
{
- y2 = (Int)y_turns[n];
+ Int y2 = (Int)y_turns[n];
+
+
y_turns[n] = y;
y = y2;
n--;
@@ -894,7 +908,7 @@
ras.maxBuff--;
if ( ras.maxBuff <= ras.top )
{
- ras.error = Raster_Err_Overflow;
+ ras.error = FT_THROW( Overflow );
return FAILURE;
}
ras.numTurns++;
@@ -919,7 +933,6 @@
static Bool
Finalize_Profile_Table( RAS_ARG )
{
- Int bottom, top;
UShort n;
PProfile p;
@@ -931,6 +944,9 @@
{
while ( n > 0 )
{
+ Int bottom, top;
+
+
if ( n > 1 )
p->link = (PProfile)( p->offset + p->height );
else
@@ -1145,7 +1161,7 @@
size = e2 - e1 + 1;
if ( ras.top + size >= ras.maxBuff )
{
- ras.error = Raster_Err_Overflow;
+ ras.error = FT_THROW( Overflow );
return FAILURE;
}
@@ -1320,7 +1336,7 @@
if ( ( top + TRUNC( e2 - e ) + 1 ) >= ras.maxBuff )
{
ras.top = top;
- ras.error = Raster_Err_Overflow;
+ ras.error = FT_THROW( Overflow );
return FAILURE;
}
@@ -1995,7 +2011,7 @@
return SUCCESS;
Invalid_Outline:
- ras.error = Raster_Err_Invalid;
+ ras.error = FT_THROW( Invalid );
Fail:
return FAILURE;
@@ -2024,8 +2040,6 @@
int i;
unsigned start;
- PProfile lastProfile;
-
ras.fProfile = NULL;
ras.joint = FALSE;
@@ -2043,7 +2057,8 @@
for ( i = 0; i < ras.outline.n_contours; i++ )
{
- Bool o;
+ PProfile lastProfile;
+ Bool o;
ras.state = Unknown_State;
@@ -2267,8 +2282,6 @@
PProfile right )
{
Long e1, e2;
- int c1, c2;
- Byte f1, f2;
Byte* target;
FT_UNUSED( y );
@@ -2287,6 +2300,10 @@
if ( e2 >= 0 && e1 < ras.bWidth )
{
+ int c1, c2;
+ Byte f1, f2;
+
+
if ( e1 < 0 )
e1 = 0;
if ( e2 >= ras.bWidth )
@@ -2510,21 +2527,24 @@
PProfile left,
PProfile right )
{
- Long e1, e2;
- PByte bits;
- Byte f1;
-
FT_UNUSED( left );
FT_UNUSED( right );
if ( x2 - x1 < ras.precision )
{
+ Long e1, e2;
+
+
e1 = CEILING( x1 );
e2 = FLOOR ( x2 );
if ( e1 == e2 )
{
+ Byte f1;
+ PByte bits;
+
+
bits = ras.bTarget + ( y >> 3 );
f1 = (Byte)( 0x80 >> ( y & 7 ) );
@@ -2721,8 +2741,6 @@
static void
Vertical_Gray_Sweep_Step( RAS_ARG )
{
- Int c1, c2;
- PByte pix, bit, bit2;
short* count = (short*)count_table;
Byte* grays;
@@ -2731,6 +2749,9 @@
if ( ras.traceOfs > ras.gray_width )
{
+ PByte pix;
+
+
pix = ras.gTarget + ras.traceG + ras.gray_min_x * 4;
grays = ras.grays;
@@ -2741,6 +2762,9 @@
Int last_bit = last_pixel & 3;
Bool over = 0;
+ Int c1, c2;
+ PByte bit, bit2;
+
if ( ras.gray_max_x >= last_cell && last_bit != 3 )
{
@@ -2833,7 +2857,6 @@
{
Long e1, e2;
PByte pixel;
- Byte color;
/* During the horizontal sweep, we only take care of drop-outs */
@@ -2887,6 +2910,9 @@
if ( e1 >= 0 )
{
+ Byte color;
+
+
if ( x2 - x1 >= ras.precision_half )
color = ras.grays[2];
else
@@ -2964,7 +2990,7 @@
/* check the Y-turns */
if ( ras.numTurns == 0 )
{
- ras.error = Raster_Err_Invalid;
+ ras.error = FT_THROW( Invalid );
return FAILURE;
}
@@ -3205,7 +3231,7 @@
if ( ras.band_top >= 7 || k < i )
{
ras.band_top = 0;
- ras.error = Raster_Err_Invalid;
+ ras.error = FT_THROW( Invalid );
return ras.error;
}
@@ -3394,7 +3420,7 @@
{
FT_UNUSED_RASTER;
- return Raster_Err_Unsupported;
+ return FT_THROW( Unsupported );
}
#endif /* !FT_RASTER_OPTION_ANTI_ALIASING */
@@ -3499,7 +3525,8 @@
raster->buffer = pool_base + ( ( sizeof ( *worker ) + 7 ) & ~7 );
- raster->buffer_size = pool_base + pool_size - (char*)raster->buffer;
+ raster->buffer_size = (long)( pool_base + pool_size -
+ (char*)raster->buffer );
raster->worker = worker;
}
else
@@ -3549,37 +3576,37 @@
if ( !raster || !raster->buffer || !raster->buffer_size )
- return Raster_Err_Not_Ini;
+ return FT_THROW( Not_Ini );
if ( !outline )
- return Raster_Err_Invalid;
+ return FT_THROW( Invalid );
/* return immediately if the outline is empty */
if ( outline->n_points == 0 || outline->n_contours <= 0 )
return Raster_Err_None;
if ( !outline->contours || !outline->points )
- return Raster_Err_Invalid;
+ return FT_THROW( Invalid );
if ( outline->n_points !=
outline->contours[outline->n_contours - 1] + 1 )
- return Raster_Err_Invalid;
+ return FT_THROW( Invalid );
worker = raster->worker;
/* this version of the raster does not support direct rendering, sorry */
if ( params->flags & FT_RASTER_FLAG_DIRECT )
- return Raster_Err_Unsupported;
+ return FT_THROW( Unsupported );
if ( !target_map )
- return Raster_Err_Invalid;
+ return FT_THROW( Invalid );
/* nothing to do */
if ( !target_map->width || !target_map->rows )
return Raster_Err_None;
if ( !target_map->buffer )
- return Raster_Err_Invalid;
+ return FT_THROW( Invalid );
ras.outline = *outline;
ras.target = *target_map;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-09 22:59:53 +0000