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freetype2
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Code Issues 9 Releases Wiki Activity

support for "automatic unpatented hinting" added 

we still need to determine the list of "trick" CJK fonts
that are going to toggle the bytecode interpreter instead
of the auto-hinter
This commit is contained in:
David Turner 2006-08-25 22:45:13 +00:00
parent 088e44e877
commit 6aa260ce61
15 changed files with 102 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/freetype/config/ftoption.h
View File

@ -594,6 +594,16 @@ FT_BEGIN_HEADER
#define FT_CONFIG_OPTION_OLD_INTERNALS
/*
* this variable is defined if either unpatented or native TrueType
* hinting is requested by the definitions above.
*/
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
# define TT_USE_BYTECODE_INTERPRETER
#elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
# define TT_USE_BYTECODE_INTERPRETER
#endif
FT_END_HEADER

4
include/freetype/internal/ftcalc.h
View File

@ -78,7 +78,7 @@ FT_BEGIN_HEADER
/*************************************************************************/
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
/*************************************************************************/
/* */
@ -108,7 +108,7 @@ FT_BEGIN_HEADER
FT_Long b,
FT_Long c );
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
#define INT_TO_F26DOT6( x ) ( (FT_Long)(x) << 6 )

25
include/freetype/internal/ftobjs.h
View File

@ -211,6 +211,27 @@ FT_BEGIN_HEADER
/* this data when first opened. This field exists only if */
/* @FT_CONFIG_OPTION_INCREMENTAL is defined. */
/* */
/* force_autohing ::
/* this boolean flag is used to instruct the glyph loader to */
/* ignore the format-specific hinter, and use the auto-hinter */
/* instead to load all glyphs. */
/* */
/* if the unpatented bytecode interpreter was compiled withing */
/* the library then: */
/* */
/* - if this is one of the tricky Asian fonts, like Gulim, which */
/* absolutely require a bytecode interpreter to load anything */
/* properly, the flag will be set to FALSE */
/* */
/* - for other fonts, the flag will be set to TRUE, and the */
/* auto-hinter will be used to scale the glyphs. */
/* */
/* if the unpatented bytecode interpretr was *not* compiled */
/* within the librayr, the flag will always be FALSE */
/* */
/* the detection of "tricky" fonts is located in the TrueType */
/* face loader. */
/* */
typedef struct FT_Face_InternalRec_
{
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
@ -227,6 +248,8 @@ FT_BEGIN_HEADER
FT_Incremental_InterfaceRec* incremental_interface;
#endif
FT_Bool force_autohint;
} FT_Face_InternalRec;
@ -621,7 +644,7 @@ FT_BEGIN_HEADER
/* Set this debug hook to a non-null pointer to force unpatented hinting */
/* for all faces when both TT_CONFIG_OPTION_BYTECODE_INTERPRETER and */
/* for all faces when both TT_USE_BYTECODE_INTERPRETER and */
/* TT_CONFIG_OPTION_UNPATENTED_HINTING are defined. this is only used */
/* during debugging. */
#define FT_DEBUG_HOOK_UNPATENTED_HINTING 1

8
src/base/ftcalc.c
View File

@ -159,7 +159,7 @@
}
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
/* documentation is in ftcalc.h */
@ -183,7 +183,7 @@
return ( s > 0 ) ? d : -d;
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
/* documentation is in freetype.h */
@ -353,7 +353,7 @@
}
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_BASE_DEF( FT_Long )
FT_MulDiv_No_Round( FT_Long a,
@ -387,7 +387,7 @@
return ( s < 0 ? -a : a );
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
/* documentation is in freetype.h */

3
src/base/ftobjs.c
View File

@ -567,6 +567,9 @@
if ( FT_LOAD_TARGET_MODE( load_flags ) == FT_RENDER_MODE_LIGHT )
load_flags |= FT_LOAD_FORCE_AUTOHINT;
if ( face->internal->force_autohint )
load_flags |= FT_LOAD_FORCE_AUTOHINT;
/* auto-hinter is preferred and should be used */
if ( ( !FT_DRIVER_HAS_HINTER( driver ) ||
( load_flags & FT_LOAD_FORCE_AUTOHINT ) ) &&

2
src/truetype/truetype.c
View File

@ -24,7 +24,7 @@
#include "ttgload.c" /* glyph loader */
#include "ttobjs.c" /* object manager */
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
#include "ttinterp.c"
#endif

8
src/truetype/ttdriver.c
View File

@ -294,7 +294,7 @@
static const FT_Service_TrueTypeEngineRec tt_service_truetype_engine =
{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
FT_TRUETYPE_ENGINE_TYPE_UNPATENTED
@ -302,11 +302,11 @@
FT_TRUETYPE_ENGINE_TYPE_PATENTED
#endif
#else /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#else /* !TT_USE_BYTECODE_INTERPRETER */
FT_TRUETYPE_ENGINE_TYPE_NONE
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
};
static const FT_ServiceDescRec tt_services[] =
@ -354,7 +354,7 @@
{
FT_MODULE_FONT_DRIVER |
FT_MODULE_DRIVER_SCALABLE |
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_MODULE_DRIVER_HAS_HINTER,
#else
0,

22
src/truetype/ttgload.c
View File

@ -310,7 +310,7 @@
goto Fail;
}
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
if ( IS_HINTED( load->load_flags ) )
{
@ -320,7 +320,7 @@
FT_MEM_COPY( load->exec->glyphIns, p, (FT_Long)n_ins );
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
p += n_ins;
@ -528,7 +528,7 @@
gloader->current.num_subglyphs = num_subglyphs;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
{
FT_Stream stream = loader->stream;
@ -599,14 +599,14 @@
TT_GlyphZone zone = &loader->zone;
FT_Pos origin;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_UInt n_ins;
#else
FT_UNUSED( is_composite );
#endif
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
n_ins = loader->glyph->control_len;
#endif
@ -615,7 +615,7 @@
if ( origin )
translate_array( zone->n_points, zone->cur, origin, 0 );
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
/* save original point positioin in org */
if ( n_ins > 0 )
FT_ARRAY_COPY( zone->org, zone->cur, zone->n_points );
@ -627,7 +627,7 @@
zone->cur[zone->n_points - 1].y =
FT_PIX_ROUND( zone->cur[zone->n_points - 1].y );
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
if ( n_ins > 0 )
{
@ -966,7 +966,7 @@
outline->tags[outline->n_points + 2] = 0;
outline->tags[outline->n_points + 3] = 0;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
{
FT_Stream stream = loader->stream;
@ -1435,7 +1435,7 @@
loader->ins_pos = ins_pos;
if ( IS_HINTED( loader->load_flags ) &&
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
subglyph->flags & WE_HAVE_INSTR &&
@ -1715,7 +1715,7 @@
FT_MEM_ZERO( loader, sizeof ( TT_LoaderRec ) );
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
/* load execution context */
{
@ -1746,7 +1746,7 @@
loader->instructions = exec->glyphIns;
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
/* seek to the beginning of the glyph table. For Type 42 fonts */
/* the table might be accessed from a Postscript stream or something */

2
src/truetype/ttgload.h
View File

@ -23,7 +23,7 @@
#include <ft2build.h>
#include "ttobjs.h"
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
#include "ttinterp.h"
#endif

4
src/truetype/ttinterp.c
View File

@ -32,7 +32,7 @@
#include "tterrors.h"
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
#define TT_MULFIX FT_MulFix
@ -7816,7 +7816,7 @@
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
/* END */

37
src/truetype/ttobjs.c
View File

@ -29,7 +29,7 @@
#include "tterrors.h"
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
#include "ttinterp.h"
#endif
@ -51,7 +51,7 @@
#define FT_COMPONENT trace_ttobjs
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
/*************************************************************************/
/* */
@ -141,7 +141,7 @@
return error;
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
/*************************************************************************/
@ -205,7 +205,7 @@
goto Bad_Format;
}
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
face->root.face_flags |= FT_FACE_FLAG_HINTER;
#endif
@ -261,6 +261,17 @@
face->unpatented_hinting = TRUE;
}
/* compare the face with a list of well-known "tricky' fonts !!
* this list shall be expanded as we find them
*/
if ( !face->unpatented_hinting )
{
/* XXX: TODO: */
if ( strcmp( ttface->family_name, "What?" ) == 0 )
face->unpatented_hinting = 1;
}
ttface->internal->force_autohint = !face->unpatented_hinting;
#endif /* TT_CONFIG_OPTION_UNPATENTED_HINTING */
/* initialize standard glyph loading routines */
@ -331,7 +342,7 @@
/* */
/*************************************************************************/
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
/*************************************************************************/
/* */
@ -481,7 +492,7 @@
return error;
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
/*************************************************************************/
@ -504,7 +515,7 @@
TT_Size size = (TT_Size)ttsize;
FT_Error error = TT_Err_Ok;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
TT_Face face = (TT_Face)size->root.face;
FT_Memory memory = face->root.memory;
@ -589,7 +600,7 @@
if ( error )
tt_size_done( ttsize );
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
size->ttmetrics.valid = FALSE;
size->strike_index = 0xFFFFFFFFUL;
@ -614,7 +625,7 @@
{
TT_Size size = (TT_Size)ttsize;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_Memory memory = size->root.face->memory;
@ -728,7 +739,7 @@
}
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
{
FT_UInt i;
@ -757,7 +768,7 @@
error = tt_size_run_prep( size );
}
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
if ( !error )
size->ttmetrics.valid = TRUE;
@ -784,7 +795,7 @@
tt_driver_init( FT_Module ttdriver ) /* TT_Driver */
{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
TT_Driver driver = (TT_Driver)ttdriver;
@ -816,7 +827,7 @@
FT_LOCAL_DEF( void )
tt_driver_done( FT_Module ttdriver ) /* TT_Driver */
{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
TT_Driver driver = (TT_Driver)ttdriver;

12
src/truetype/ttobjs.h
View File

@ -109,7 +109,7 @@ FT_BEGIN_HEADER
} TT_GraphicsState;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_LOCAL( void )
tt_glyphzone_done( TT_GlyphZone zone );
@ -120,7 +120,7 @@ FT_BEGIN_HEADER
FT_Short maxContours,
TT_GlyphZone zone );
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
@ -324,7 +324,7 @@ FT_BEGIN_HEADER
FT_ULong strike_index; /* 0xFFFFFFFF to indicate invalid */
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_UInt num_function_defs; /* number of function definitions */
FT_UInt max_function_defs;
@ -358,7 +358,7 @@ FT_BEGIN_HEADER
FT_Bool debug;
TT_ExecContext context;
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
} TT_SizeRec;
@ -412,7 +412,7 @@ FT_BEGIN_HEADER
FT_LOCAL( void )
tt_size_done( FT_Size ttsize ); /* TT_Size */
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_LOCAL( FT_Error )
tt_size_run_fpgm( TT_Size size );
@ -420,7 +420,7 @@ FT_BEGIN_HEADER
FT_LOCAL( FT_Error )
tt_size_run_prep( TT_Size size );
#endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#endif /* TT_USE_BYTECODE_INTERPRETER */
FT_LOCAL( FT_Error )
tt_size_reset( TT_Size size );

12
src/truetype/ttpload.c
View File

@ -334,7 +334,7 @@
tt_face_load_cvt( TT_Face face,
FT_Stream stream )
{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_Error error;
FT_Memory memory = stream->memory;
@ -383,7 +383,7 @@
Exit:
return error;
#else /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#else /* !TT_USE_BYTECODE_INTERPRETER */
FT_UNUSED( face );
FT_UNUSED( stream );
@ -415,7 +415,7 @@
tt_face_load_fpgm( TT_Face face,
FT_Stream stream )
{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_Error error;
FT_ULong table_len;
@ -445,7 +445,7 @@
Exit:
return error;
#else /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#else /* !TT_USE_BYTECODE_INTERPRETER */
FT_UNUSED( face );
FT_UNUSED( stream );
@ -477,7 +477,7 @@
tt_face_load_prep( TT_Face face,
FT_Stream stream )
{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_Error error;
FT_ULong table_len;
@ -506,7 +506,7 @@
Exit:
return error;
#else /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
#else /* !TT_USE_BYTECODE_INTERPRETER */
FT_UNUSED( face );
FT_UNUSED( stream );

2
src/type42/t42drivr.c
View File

@ -199,7 +199,7 @@
{
FT_MODULE_FONT_DRIVER |
FT_MODULE_DRIVER_SCALABLE |
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#ifdef TT_USE_BYTECODE_INTERPRETER
FT_MODULE_DRIVER_HAS_HINTER,
#else
0,

3
src/type42/t42objs.c
View File

@ -209,6 +209,9 @@
if ( info->is_fixed_pitch )
root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
/* note, only define if we have the patented bytecode interpreter,
* there are no known "tricky" Type42 fonts that could be loaded
* with the unpatented interpreter */
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
root->face_flags |= FT_FACE_FLAG_HINTER;
#endif