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-rw-r--r--src/smooth/ftgrays.c102
-rw-r--r--src/smooth/ftsmooth.c80
-rw-r--r--src/smooth/ftspic.c37
-rw-r--r--src/smooth/ftspic.h17
4 files changed, 168 insertions, 68 deletions
diff --git a/src/smooth/ftgrays.c b/src/smooth/ftgrays.c
index 4c0eea5..d2158e7 100644
--- a/src/smooth/ftgrays.c
+++ b/src/smooth/ftgrays.c
@@ -4,7 +4,7 @@
/* */
/* A new `perfect' anti-aliasing renderer (body). */
/* */
-/* Copyright 2000-2003, 2005-2012 by */
+/* Copyright 2000-2003, 2005-2013 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -94,6 +94,11 @@
#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 )
+
+
/* define this to dump debugging information */
/* #define FT_DEBUG_LEVEL_TRACE */
@@ -154,6 +159,21 @@ typedef ptrdiff_t FT_PtrDist;
va_end( ap );
}
+
+ /* empty function useful for setting a breakpoint to catch errors */
+ int
+ FT_Throw( int error,
+ int line,
+ const char* file )
+ {
+ FT_UNUSED( error );
+ FT_UNUSED( line );
+ FT_UNUSED( file );
+
+ return 0;
+ }
+
+
/* we don't handle tracing levels in stand-alone mode; */
#ifndef FT_TRACE5
#define FT_TRACE5( varformat ) FT_Message varformat
@@ -165,11 +185,19 @@ typedef ptrdiff_t FT_PtrDist;
#define FT_ERROR( varformat ) FT_Message varformat
#endif
+#define FT_THROW( e ) \
+ ( FT_Throw( FT_ERR_CAT( ErrRaster, e ), \
+ __LINE__, \
+ __FILE__ ) | \
+ FT_ERR_CAT( ErrRaster, e ) )
+
#else /* !FT_DEBUG_LEVEL_TRACE */
#define FT_TRACE5( x ) do { } while ( 0 ) /* nothing */
#define FT_TRACE7( x ) do { } while ( 0 ) /* nothing */
#define FT_ERROR( x ) do { } while ( 0 ) /* nothing */
+#define FT_THROW( e ) FT_ERR_CAT( ErrRaster_, e )
+
#endif /* !FT_DEBUG_LEVEL_TRACE */
@@ -202,6 +230,7 @@ typedef ptrdiff_t FT_PtrDist;
raster_done_ \
};
+
#else /* !_STANDALONE_ */
@@ -215,13 +244,14 @@ typedef ptrdiff_t FT_PtrDist;
#include "ftspic.h"
-#define ErrRaster_Invalid_Mode Smooth_Err_Cannot_Render_Glyph
-#define ErrRaster_Invalid_Outline Smooth_Err_Invalid_Outline
+#define Smooth_Err_Invalid_Mode Smooth_Err_Cannot_Render_Glyph
+#define Smooth_Err_Memory_Overflow Smooth_Err_Out_Of_Memory
#define ErrRaster_Memory_Overflow Smooth_Err_Out_Of_Memory
-#define ErrRaster_Invalid_Argument Smooth_Err_Invalid_Argument
+
#endif /* !_STANDALONE_ */
+
#ifndef FT_MEM_SET
#define FT_MEM_SET( d, s, c ) ft_memset( d, s, c )
#endif
@@ -312,7 +342,7 @@ typedef ptrdiff_t FT_PtrDist;
#endif /* PIXEL_BITS >= 8 */
- /* maximal number of gray spans in a call to the span callback */
+ /* maximum number of gray spans in a call to the span callback */
#define FT_MAX_GRAY_SPANS 32
@@ -600,7 +630,7 @@ typedef ptrdiff_t FT_PtrDist;
TPos x2,
TCoord y2 )
{
- TCoord ex1, ex2, fx1, fx2, delta, mod, lift, rem;
+ TCoord ex1, ex2, fx1, fx2, delta, mod;
long p, first, dx;
int incr;
@@ -661,6 +691,9 @@ typedef ptrdiff_t FT_PtrDist;
if ( ex1 != ex2 )
{
+ TCoord lift, rem;
+
+
p = ONE_PIXEL * ( y2 - y1 + delta );
lift = (TCoord)( p / dx );
rem = (TCoord)( p % dx );
@@ -1091,11 +1124,11 @@ typedef ptrdiff_t FT_PtrDist;
if ( s > s_limit )
goto Split;
- /* If P1 or P2 is outside P0-P3, split the curve. */
- if ( dy * dy1 + dx * dx1 < 0 ||
- dy * dy2 + dx * dx2 < 0 ||
- dy * (arc[3].y - arc[1].y) + dx * (arc[3].x - arc[1].x) < 0 ||
- dy * (arc[3].y - arc[2].y) + dx * (arc[3].x - arc[2].x) < 0 )
+ /* Split super curvy segments where the off points are so far
+ from the chord that the angles P0-P1-P3 or P0-P2-P3 become
+ acute as detected by appropriate dot products. */
+ if ( dx1 * ( dx1 - dx ) + dy1 * ( dy1 - dy ) > 0 ||
+ dx2 * ( dx2 - dx ) + dy2 * ( dy2 - dy ) > 0 )
goto Split;
/* No reason to split. */
@@ -1227,9 +1260,7 @@ typedef ptrdiff_t FT_PtrDist;
TPos area,
TCoord acount )
{
- FT_Span* span;
- int count;
- int coverage;
+ int coverage;
/* compute the coverage line's coverage, depending on the */
@@ -1271,6 +1302,10 @@ typedef ptrdiff_t FT_PtrDist;
if ( coverage )
{
+ FT_Span* span;
+ int count;
+
+
/* see whether we can add this span to the current list */
count = ras.num_gray_spans;
span = ras.gray_spans + count - 1;
@@ -1400,7 +1435,26 @@ typedef ptrdiff_t FT_PtrDist;
ras.render_span( ras.span_y, ras.num_gray_spans,
ras.gray_spans, ras.render_span_data );
+#ifdef FT_DEBUG_LEVEL_TRACE
+
+ if ( ras.num_gray_spans > 0 )
+ {
+ FT_Span* span;
+ int n;
+
+
+ FT_TRACE7(( "y = %3d ", ras.span_y ));
+ span = ras.gray_spans;
+ for ( n = 0; n < ras.num_gray_spans; n++, span++ )
+ FT_TRACE7(( "[%d..%d]:%02x ",
+ span->x, span->x + span->len - 1, span->coverage ));
+ FT_TRACE7(( "\n" ));
+ }
+
FT_TRACE7(( "gray_sweep: end\n" ));
+
+#endif /* FT_DEBUG_LEVEL_TRACE */
+
}
@@ -1467,7 +1521,7 @@ typedef ptrdiff_t FT_PtrDist;
if ( !outline || !func_interface )
- return ErrRaster_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
shift = func_interface->shift;
delta = func_interface->delta;
@@ -1680,7 +1734,7 @@ typedef ptrdiff_t FT_PtrDist;
return error;
Invalid_Outline:
- return ErrRaster_Invalid_Outline;
+ return FT_THROW( Invalid_Outline );
}
#endif /* _STANDALONE_ */
@@ -1718,7 +1772,7 @@ typedef ptrdiff_t FT_PtrDist;
gray_record_cell( RAS_VAR );
}
else
- error = ErrRaster_Memory_Overflow;
+ error = FT_THROW( Memory_Overflow );
return error;
}
@@ -1871,21 +1925,21 @@ typedef ptrdiff_t FT_PtrDist;
if ( !raster || !raster->buffer || !raster->buffer_size )
- return ErrRaster_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
if ( !outline )
- return ErrRaster_Invalid_Outline;
+ return FT_THROW( Invalid_Outline );
/* return immediately if the outline is empty */
if ( outline->n_points == 0 || outline->n_contours <= 0 )
return 0;
if ( !outline->contours || !outline->points )
- return ErrRaster_Invalid_Outline;
+ return FT_THROW( Invalid_Outline );
if ( outline->n_points !=
outline->contours[outline->n_contours - 1] + 1 )
- return ErrRaster_Invalid_Outline;
+ return FT_THROW( Invalid_Outline );
worker = raster->worker;
@@ -1893,19 +1947,19 @@ typedef ptrdiff_t FT_PtrDist;
if ( !( params->flags & FT_RASTER_FLAG_DIRECT ) )
{
if ( !target_map )
- return ErrRaster_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
/* nothing to do */
if ( !target_map->width || !target_map->rows )
return 0;
if ( !target_map->buffer )
- return ErrRaster_Invalid_Argument;
+ return FT_THROW( Invalid_Argument );
}
/* this version does not support monochrome rendering */
if ( !( params->flags & FT_RASTER_FLAG_AA ) )
- return ErrRaster_Invalid_Mode;
+ return FT_THROW( Invalid_Mode );
/* compute clipping box */
if ( !( params->flags & FT_RASTER_FLAG_DIRECT ) )
diff --git a/src/smooth/ftsmooth.c b/src/smooth/ftsmooth.c
index 00499cc..89088cd 100644
--- a/src/smooth/ftsmooth.c
+++ b/src/smooth/ftsmooth.c
@@ -4,7 +4,7 @@
/* */
/* Anti-aliasing renderer interface (body). */
/* */
-/* Copyright 2000-2006, 2009-2012 by */
+/* Copyright 2000-2006, 2009-2013 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -61,12 +61,12 @@
const FT_Matrix* matrix,
const FT_Vector* delta )
{
- FT_Error error = Smooth_Err_Ok;
+ FT_Error error = FT_Err_Ok;
if ( slot->format != render->glyph_format )
{
- error = Smooth_Err_Invalid_Argument;
+ error = FT_THROW( Invalid_Argument );
goto Exit;
}
@@ -109,31 +109,43 @@
#ifndef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
FT_Pos height_org, width_org;
#endif
- FT_Bitmap* bitmap;
- FT_Memory memory;
- FT_Int hmul = mode == FT_RENDER_MODE_LCD;
- FT_Int vmul = mode == FT_RENDER_MODE_LCD_V;
- FT_Pos x_shift, y_shift, x_left, y_top;
+ FT_Bitmap* bitmap = &slot->bitmap;
+ FT_Memory memory = render->root.memory;
+ FT_Int hmul = mode == FT_RENDER_MODE_LCD;
+ FT_Int vmul = mode == FT_RENDER_MODE_LCD_V;
+ FT_Pos x_shift = 0;
+ FT_Pos y_shift = 0;
+ FT_Pos x_left, y_top;
FT_Raster_Params params;
+ FT_Bool have_translated_origin = FALSE;
+ FT_Bool have_outline_shifted = FALSE;
+ FT_Bool have_buffer = FALSE;
+
/* check glyph image format */
if ( slot->format != render->glyph_format )
{
- error = Smooth_Err_Invalid_Argument;
+ error = FT_THROW( Invalid_Argument );
goto Exit;
}
/* check mode */
if ( mode != required_mode )
- return Smooth_Err_Cannot_Render_Glyph;
+ {
+ error = FT_THROW( Cannot_Render_Glyph );
+ goto Exit;
+ }
outline = &slot->outline;
/* translate the outline to the new origin if needed */
if ( origin )
+ {
FT_Outline_Translate( outline, origin->x, origin->y );
+ have_translated_origin = TRUE;
+ }
/* compute the control box, and grid fit it */
FT_Outline_Get_CBox( outline, &cbox );
@@ -148,24 +160,23 @@
FT_ERROR(( "ft_smooth_render_generic: glyph too large:"
" xMin = %d, xMax = %d\n",
cbox.xMin >> 6, cbox.xMax >> 6 ));
- return Smooth_Err_Raster_Overflow;
+ error = FT_THROW( Raster_Overflow );
+ goto Exit;
}
else
- width = ( cbox.xMax - cbox.xMin ) >> 6;
+ width = ( cbox.xMax - cbox.xMin ) >> 6;
if ( cbox.yMin < 0 && cbox.yMax > FT_INT_MAX + cbox.yMin )
{
FT_ERROR(( "ft_smooth_render_generic: glyph too large:"
" yMin = %d, yMax = %d\n",
cbox.yMin >> 6, cbox.yMax >> 6 ));
- return Smooth_Err_Raster_Overflow;
+ error = FT_THROW( Raster_Overflow );
+ goto Exit;
}
else
height = ( cbox.yMax - cbox.yMin ) >> 6;
- bitmap = &slot->bitmap;
- memory = render->root.memory;
-
#ifndef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
width_org = width;
height_org = height;
@@ -221,13 +232,14 @@
#if FT_UINT_MAX > 0xFFFFU
- /* Required check is ( pitch * height < FT_ULONG_MAX ), */
- /* but we care realistic cases only. Always pitch <= width. */
+ /* Required check is (pitch * height < FT_ULONG_MAX), */
+ /* but we care realistic cases only. Always pitch <= width. */
if ( width > 0x7FFF || height > 0x7FFF )
{
FT_ERROR(( "ft_smooth_render_generic: glyph too large: %u x %u\n",
width, height ));
- return Smooth_Err_Raster_Overflow;
+ error = FT_THROW( Raster_Overflow );
+ goto Exit;
}
#endif
@@ -240,9 +252,12 @@
/* translate outline to render it into the bitmap */
FT_Outline_Translate( outline, -x_shift, -y_shift );
+ have_outline_shifted = TRUE;
if ( FT_ALLOC( bitmap->buffer, (FT_ULong)pitch * height ) )
goto Exit;
+ else
+ have_buffer = TRUE;
slot->internal->flags |= FT_GLYPH_OWN_BITMAP;
@@ -288,6 +303,9 @@
vec->y /= 3;
}
+ if ( error )
+ goto Exit;
+
if ( slot->library->lcd_filter_func )
slot->library->lcd_filter_func( bitmap, mode, slot->library );
@@ -295,6 +313,8 @@
/* render outline into bitmap */
error = render->raster_render( render->raster, &params );
+ if ( error )
+ goto Exit;
/* expand it horizontally */
if ( hmul )
@@ -346,25 +366,35 @@
#endif /* !FT_CONFIG_OPTION_SUBPIXEL_RENDERING */
- FT_Outline_Translate( outline, x_shift, y_shift );
-
/*
* XXX: on 16bit system, we return an error for huge bitmap
* to prevent an overflow.
*/
if ( x_left > FT_INT_MAX || y_top > FT_INT_MAX )
- return Smooth_Err_Invalid_Pixel_Size;
-
- if ( error )
+ {
+ error = FT_THROW( Invalid_Pixel_Size );
goto Exit;
+ }
slot->format = FT_GLYPH_FORMAT_BITMAP;
slot->bitmap_left = (FT_Int)x_left;
slot->bitmap_top = (FT_Int)y_top;
+ /* everything is fine; don't deallocate buffer */
+ have_buffer = FALSE;
+
+ error = FT_Err_Ok;
+
Exit:
- if ( outline && origin )
+ if ( have_outline_shifted )
+ FT_Outline_Translate( outline, x_shift, y_shift );
+ if ( have_translated_origin )
FT_Outline_Translate( outline, -origin->x, -origin->y );
+ if ( have_buffer )
+ {
+ FT_FREE( bitmap->buffer );
+ slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
+ }
return error;
}
diff --git a/src/smooth/ftspic.c b/src/smooth/ftspic.c
index 601bcf9..67a2b83 100644
--- a/src/smooth/ftspic.c
+++ b/src/smooth/ftspic.c
@@ -4,7 +4,7 @@
/* */
/* The FreeType position independent code services for smooth module. */
/* */
-/* Copyright 2009, 2010 by */
+/* Copyright 2009, 2010, 2012, 2013 by */
/* Oran Agra and Mickey Gabel. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -22,17 +22,19 @@
#include "ftspic.h"
#include "ftsmerrs.h"
+
#ifdef FT_CONFIG_OPTION_PIC
/* forward declaration of PIC init functions from ftgrays.c */
void
FT_Init_Class_ft_grays_raster( FT_Raster_Funcs* funcs );
+
void
ft_smooth_renderer_class_pic_free( FT_Library library )
{
FT_PIC_Container* pic_container = &library->pic_container;
- FT_Memory memory = library->memory;
+ FT_Memory memory = library->memory;
if ( pic_container->smooth )
@@ -42,6 +44,7 @@
if ( --container->ref_count )
return;
+
FT_FREE( container );
pic_container->smooth = NULL;
}
@@ -52,8 +55,8 @@
ft_smooth_renderer_class_pic_init( FT_Library library )
{
FT_PIC_Container* pic_container = &library->pic_container;
- FT_Error error = Smooth_Err_Ok;
- SmoothPIC* container;
+ FT_Error error = FT_Err_Ok;
+ SmoothPIC* container = NULL;
FT_Memory memory = library->memory;
@@ -66,37 +69,45 @@
}
/* allocate pointer, clear and set global container pointer */
- if ( FT_ALLOC ( container, sizeof ( *container ) ) )
+ if ( FT_ALLOC( container, sizeof ( *container ) ) )
return error;
FT_MEM_SET( container, 0, sizeof ( *container ) );
pic_container->smooth = container;
+
container->ref_count = 1;
- /* initialize pointer table - this is how the module usually expects this data */
+ /* initialize pointer table - */
+ /* this is how the module usually expects this data */
FT_Init_Class_ft_grays_raster( &container->ft_grays_raster );
-/*Exit:*/
- if ( error )
- ft_smooth_renderer_class_pic_free( library );
+
return error;
}
+
/* re-route these init and free functions to the above functions */
- FT_Error ft_smooth_lcd_renderer_class_pic_init( FT_Library library )
+ FT_Error
+ ft_smooth_lcd_renderer_class_pic_init( FT_Library library )
{
return ft_smooth_renderer_class_pic_init( library );
}
- void ft_smooth_lcd_renderer_class_pic_free( FT_Library library )
+
+ void
+ ft_smooth_lcd_renderer_class_pic_free( FT_Library library )
{
ft_smooth_renderer_class_pic_free( library );
}
- FT_Error ft_smooth_lcdv_renderer_class_pic_init( FT_Library library )
+
+ FT_Error
+ ft_smooth_lcdv_renderer_class_pic_init( FT_Library library )
{
return ft_smooth_renderer_class_pic_init( library );
}
- void ft_smooth_lcdv_renderer_class_pic_free( FT_Library library )
+
+ void
+ ft_smooth_lcdv_renderer_class_pic_free( FT_Library library )
{
ft_smooth_renderer_class_pic_free( library );
}
diff --git a/src/smooth/ftspic.h b/src/smooth/ftspic.h
index 4686f5e..334b51c 100644
--- a/src/smooth/ftspic.h
+++ b/src/smooth/ftspic.h
@@ -25,18 +25,23 @@ FT_BEGIN_HEADER
#include FT_INTERNAL_PIC_H
#ifndef FT_CONFIG_OPTION_PIC
-#define FT_GRAYS_RASTER_GET ft_grays_raster
+
+#define FT_GRAYS_RASTER_GET ft_grays_raster
#else /* FT_CONFIG_OPTION_PIC */
- typedef struct SmoothPIC_
+ typedef struct SmoothPIC_
{
- int ref_count;
- FT_Raster_Funcs ft_grays_raster;
+ int ref_count;
+ FT_Raster_Funcs ft_grays_raster;
+
} SmoothPIC;
-#define GET_PIC(lib) ((SmoothPIC*)((lib)->pic_container.smooth))
-#define FT_GRAYS_RASTER_GET (GET_PIC(library)->ft_grays_raster)
+
+#define GET_PIC( lib ) \
+ ( (SmoothPIC*)( (lib)->pic_container.smooth ) )
+#define FT_GRAYS_RASTER_GET ( GET_PIC( library )->ft_grays_raster )
+
/* see ftspic.c for the implementation */
void
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-12 01:54:18 +0000