freetype2/src/truetype/ttpload.c

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/***************************************************************************/
/* */
/* ttpload.c */
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/* */
/* TrueType glyph data/program tables loader (body). */
/* */
/* Copyright 1996-2001, 2002, 2004, 2005 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/***************************************************************************/
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#include <ft2build.h>
#include FT_INTERNAL_DEBUG_H
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_STREAM_H
#include FT_TRUETYPE_TAGS_H
Complete redesign of error codes. Please check ftmoderr.h for more details. * include/freetype/internal/cfferrs.h, include/freetype/internal/tterrors.h, include/freetype/internal/t1errors.h: Removed. Replaced with files local to the module. All extra error codes have been moved to `fterrors.h'. * src/sfnt/ttpost.h: Move error codes to `fterrors.h'. * src/autohint/aherrors.h, src/cache/ftcerror.h, src/cff/cfferrs.h, src/cid/ciderrs.h, src/pcf/pcferror.h, src/psaux/psauxerr.h, src/psnames/psnamerr.h, src/raster/rasterrs.h, src/sfnt/sferrors.h, src/smooth/ftsmerrs.h, src/truetype/tterrors.h, src/type1/t1errors.h, src/winfonts/fnterrs.h: New files defining the error names for the module it belongs to. * include/freetype/ftmoderr.h: New file, defining the module error offsets. Its structure is similar to `fterrors.h'. * include/freetype/fterrors.h (FT_NOERRORDEF): New macro. (FT_ERRORDEF): Redefined to use module error offsets. All internal error codes are now public; unused error codes have been removed, some are new. * include/freetype/config/ftheader.h (FT_MODULE_ERRORS_H): New macro. * include/freetype/config/ftoption.h (FT_CONFIG_OPTION_USE_MODULE_ERRORS): New macro. All other source files have been updated to use the new error codes; some already existing (internal) error codes local to a module have been renamed to give them the same name as in the base module. All make files have been updated to include the local error files. * src/cid/cidtokens.h: Replaced with... * src/cid/cidtoken.h: This file for 8+3 consistency. * src/raster/ftraster.c: Use macros for header file names.
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#include "ttpload.h"
Complete redesign of error codes. Please check ftmoderr.h for more details. * include/freetype/internal/cfferrs.h, include/freetype/internal/tterrors.h, include/freetype/internal/t1errors.h: Removed. Replaced with files local to the module. All extra error codes have been moved to `fterrors.h'. * src/sfnt/ttpost.h: Move error codes to `fterrors.h'. * src/autohint/aherrors.h, src/cache/ftcerror.h, src/cff/cfferrs.h, src/cid/ciderrs.h, src/pcf/pcferror.h, src/psaux/psauxerr.h, src/psnames/psnamerr.h, src/raster/rasterrs.h, src/sfnt/sferrors.h, src/smooth/ftsmerrs.h, src/truetype/tterrors.h, src/type1/t1errors.h, src/winfonts/fnterrs.h: New files defining the error names for the module it belongs to. * include/freetype/ftmoderr.h: New file, defining the module error offsets. Its structure is similar to `fterrors.h'. * include/freetype/fterrors.h (FT_NOERRORDEF): New macro. (FT_ERRORDEF): Redefined to use module error offsets. All internal error codes are now public; unused error codes have been removed, some are new. * include/freetype/config/ftheader.h (FT_MODULE_ERRORS_H): New macro. * include/freetype/config/ftoption.h (FT_CONFIG_OPTION_USE_MODULE_ERRORS): New macro. All other source files have been updated to use the new error codes; some already existing (internal) error codes local to a module have been renamed to give them the same name as in the base module. All make files have been updated to include the local error files. * src/cid/cidtokens.h: Replaced with... * src/cid/cidtoken.h: This file for 8+3 consistency. * src/raster/ftraster.c: Use macros for header file names.
2001-06-06 19:30:41 +02:00
* src/pcf/pcfdrivr.c: Revert change from 2004-04-17. * src/pcf/pcfutil.c: Use FT_LOCAL_DEF. * src/pcf/pcfutil.h: Include FT_CONFIG_CONFIG_H. Use FT_BEGIN_HEADER and FT_END_HEADER. Use FT_LOCAL. 2004-04-24 George Williams <gww@silcom.com> Add support for Apple's distortable font technology (in GX fonts). * devel/ftoption.h, include/freetype/config/ftoption.h (TT_CONFIG_OPTION_GX_VAR_SUPPORT): New macro. * include/freetype/ftmm.h (FT_Var_Axis, FT_Var_Named_Style, FT_MM_Var): New structures. (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates, FT_Set_Var_Blend_Coordinates): New function declarations. * include/freetype/internal/services/svmm.h (FT_Get_MM_Var_Func, FT_Set_Var_Design_Func): New typedefs. Update MultiMasters service. * include/freetype/internal/tttypes.h [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include FT_MULTIPLE_MASTERS_H. (GX_Blend) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New typedef. (TT_Face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New members `doblend' and `blend'. * include/freetype/tttags.h (TTAG_avar, TTAG_cvar, TTAG_gvar): New macros. * include/freetype/internal/fttrace.h: Add `ttgxvar'. * src/base/ftmm.c (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates, FT_Set_Var_Blend_Coordinates): New functions. * src/sfnt/sfobjs.c (sfnt_load_face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Set FT_FACE_FLAG_MULTIPLE_MASTERS flag for GX var fonts. * src/truetype/ttgxvar.c, src/truetype/ttgxvar.h: New files. * src/truetype/truetype.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.c. * src/truetype/ttdriver.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include FT_MULTIPLE_MASTERS_H, FT_SERVICE_MULTIPLE_MASTERS_H, and ttgxvar.h. (tt_service_gx_multi_masters) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New service. (tt_services) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated. * src/truetype/ttgload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (TT_Process_Simple_Glyph, load_truetype_glyph) [TT_CONFIG_OPTION_GX_VAR_SUPPORT] :Support GX var fonts. * src/truetype/ttobjs.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (tt_done_face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call tt_done_blend. * src/truetype/ttpload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (tt_face_load_cvt) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call tt_face_vary_cvt. * src/truetype/rules.mk (TT_DRV_SRC): Add ttgxvar.c. * src/type1/t1driver.c (t1_service_multi_masters): Add T1_Get_MM_Var and T1_Set_Var_Design. * src/type1/t1load.c (FT_INT_TO_FIXED, FT_FIXED_TO_INT): New macros. (T1_Get_MM_Var, T1_Set_Var_Design): New functions. * src/type1/t1load.h (T1_Get_MM_Var, T1_Set_Var_Design): New function declarations.
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#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
#include "ttgxvar.h"
#endif
Complete redesign of error codes. Please check ftmoderr.h for more details. * include/freetype/internal/cfferrs.h, include/freetype/internal/tterrors.h, include/freetype/internal/t1errors.h: Removed. Replaced with files local to the module. All extra error codes have been moved to `fterrors.h'. * src/sfnt/ttpost.h: Move error codes to `fterrors.h'. * src/autohint/aherrors.h, src/cache/ftcerror.h, src/cff/cfferrs.h, src/cid/ciderrs.h, src/pcf/pcferror.h, src/psaux/psauxerr.h, src/psnames/psnamerr.h, src/raster/rasterrs.h, src/sfnt/sferrors.h, src/smooth/ftsmerrs.h, src/truetype/tterrors.h, src/type1/t1errors.h, src/winfonts/fnterrs.h: New files defining the error names for the module it belongs to. * include/freetype/ftmoderr.h: New file, defining the module error offsets. Its structure is similar to `fterrors.h'. * include/freetype/fterrors.h (FT_NOERRORDEF): New macro. (FT_ERRORDEF): Redefined to use module error offsets. All internal error codes are now public; unused error codes have been removed, some are new. * include/freetype/config/ftheader.h (FT_MODULE_ERRORS_H): New macro. * include/freetype/config/ftoption.h (FT_CONFIG_OPTION_USE_MODULE_ERRORS): New macro. All other source files have been updated to use the new error codes; some already existing (internal) error codes local to a module have been renamed to give them the same name as in the base module. All make files have been updated to include the local error files. * src/cid/cidtokens.h: Replaced with... * src/cid/cidtoken.h: This file for 8+3 consistency. * src/raster/ftraster.c: Use macros for header file names.
2001-06-06 19:30:41 +02:00
#include "tterrors.h"
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/*************************************************************************/
/* */
/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
/* messages during execution. */
/* */
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#undef FT_COMPONENT
#define FT_COMPONENT trace_ttpload
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/*************************************************************************/
/* */
/* <Function> */
/* tt_face_load_loca */
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/* */
/* <Description> */
/* Loads the locations table. */
/* */
/* <InOut> */
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/* face :: A handle to the target face object. */
/* */
/* <Input> */
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/* stream :: The input stream. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
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/* */
#ifdef FT_OPTIMIZE_MEMORY
FT_LOCAL_DEF( FT_Error )
tt_face_load_loca( TT_Face face,
FT_Stream stream )
{
FT_Error error;
FT_ULong table_len;
FT_TRACE2(( "Locations " ));
error = face->goto_table( face, TTAG_loca, stream, &table_len );
if ( error )
{
error = TT_Err_Locations_Missing;
goto Exit;
}
if ( face->header.Index_To_Loc_Format != 0 )
{
if ( table_len >= 0x40000 )
{
FT_TRACE2(( "table too large!\n" ));
error = TT_Err_Invalid_Table;
goto Exit;
}
face->num_locations = (FT_UInt)( table_len >> 2 );
}
else
{
if ( table_len >= 0x20000 )
{
FT_TRACE2(( "table too large!\n" ));
error = TT_Err_Invalid_Table;
goto Exit;
}
face->num_locations = (FT_UInt)( table_len >> 1 );
}
/*
* Extract the frame. We don't need to decompress it since
* we are able to parse it directly.
*/
if ( FT_FRAME_EXTRACT( table_len, face->glyph_locations ) )
goto Exit;
FT_TRACE2(( "loaded\n" ));
Exit:
return error;
}
FT_LOCAL_DEF( FT_ULong )
tt_face_get_location( TT_Face face,
FT_UInt gindex,
FT_UInt *asize )
{
FT_ULong pos1, pos2;
FT_Byte* p;
FT_Byte* p_limit;
pos1 = pos2 = 0;
if ( gindex < face->num_locations )
{
if ( face->header.Index_To_Loc_Format != 0 )
{
p = face->glyph_locations + gindex * 4;
p_limit = face->glyph_locations + face->num_locations * 4;
pos1 = FT_NEXT_ULONG( p );
pos2 = pos1;
if ( p + 4 <= p_limit )
pos2 = FT_NEXT_ULONG( p );
}
else
{
p = face->glyph_locations + gindex * 2;
p_limit = face->glyph_locations + face->num_locations * 2;
pos1 = FT_NEXT_USHORT( p );
pos2 = pos1;
if ( p + 2 <= p_limit )
pos2 = FT_NEXT_USHORT( p );
pos1 <<= 1;
pos2 <<= 1;
}
}
*asize = (FT_UInt)( pos2 - pos1 );
return pos1;
}
FT_LOCAL_DEF( void )
tt_face_done_loca( TT_Face face )
{
FT_Stream stream = face->root.stream;
FT_FRAME_RELEASE( face->glyph_locations );
face->num_locations = 0;
}
#else /* !FT_OPTIMIZE_MEMORY */
FT_LOCAL_DEF( FT_Error )
tt_face_load_loca( TT_Face face,
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FT_Stream stream )
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{
FT_Error error;
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FT_Memory memory = stream->memory;
FT_Short LongOffsets;
FT_ULong table_len;
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FT_TRACE2(( "Locations " ));
LongOffsets = face->header.Index_To_Loc_Format;
error = face->goto_table( face, TTAG_loca, stream, &table_len );
if ( error )
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{
error = TT_Err_Locations_Missing;
goto Exit;
}
if ( LongOffsets != 0 )
{
face->num_locations = (FT_UShort)( table_len >> 2 );
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FT_TRACE2(( "(32bit offsets): %12d ", face->num_locations ));
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if ( FT_NEW_ARRAY( face->glyph_locations, face->num_locations ) )
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goto Exit;
if ( FT_FRAME_ENTER( face->num_locations * 4L ) )
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goto Exit;
{
FT_Long* loc = face->glyph_locations;
FT_Long* limit = loc + face->num_locations;
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for ( ; loc < limit; loc++ )
*loc = FT_GET_LONG();
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}
FT_FRAME_EXIT();
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}
else
{
face->num_locations = (FT_UShort)( table_len >> 1 );
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FT_TRACE2(( "(16bit offsets): %12d ", face->num_locations ));
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if ( FT_NEW_ARRAY( face->glyph_locations, face->num_locations ) )
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goto Exit;
if ( FT_FRAME_ENTER( face->num_locations * 2L ) )
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goto Exit;
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{
FT_Long* loc = face->glyph_locations;
FT_Long* limit = loc + face->num_locations;
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for ( ; loc < limit; loc++ )
*loc = (FT_Long)( (FT_ULong)FT_GET_USHORT() * 2 );
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}
FT_FRAME_EXIT();
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}
FT_TRACE2(( "loaded\n" ));
Exit:
return error;
}
FT_LOCAL_DEF( FT_ULong )
tt_face_get_location( TT_Face face,
FT_UInt gindex,
FT_UInt *asize )
{
FT_ULong offset;
FT_UInt count;
offset = face->glyph_locations[gindex];
count = 0;
if ( gindex < (FT_UInt)face->num_locations - 1 )
count = (FT_UInt)( face->glyph_locations[gindex + 1] - offset );
*asize = count;
return offset;
}
FT_LOCAL_DEF( void )
tt_face_done_loca( TT_Face face )
{
FT_Memory memory = face->root.memory;
FT_FREE( face->glyph_locations );
face->num_locations = 0;
}
#endif /* !FT_OPTIMIZE_MEMORY */
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/*************************************************************************/
/* */
/* <Function> */
/* tt_face_load_cvt */
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/* */
/* <Description> */
/* Loads the control value table into a face object. */
/* */
/* <InOut> */
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/* face :: A handle to the target face object. */
/* */
/* <Input> */
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/* stream :: A handle to the input stream. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
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/* */
FT_LOCAL_DEF( FT_Error )
tt_face_load_cvt( TT_Face face,
FT_Stream stream )
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{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
FT_Error error;
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FT_Memory memory = stream->memory;
FT_ULong table_len;
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FT_TRACE2(( "CVT " ));
error = face->goto_table( face, TTAG_cvt, stream, &table_len );
if ( error )
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{
FT_TRACE2(( "is missing!\n" ));
face->cvt_size = 0;
face->cvt = NULL;
error = TT_Err_Ok;
goto Exit;
}
face->cvt_size = table_len / 2;
if ( FT_NEW_ARRAY( face->cvt, face->cvt_size ) )
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goto Exit;
if ( FT_FRAME_ENTER( face->cvt_size * 2L ) )
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goto Exit;
{
FT_Short* cur = face->cvt;
FT_Short* limit = cur + face->cvt_size;
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for ( ; cur < limit; cur++ )
*cur = FT_GET_SHORT();
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}
FT_FRAME_EXIT();
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FT_TRACE2(( "loaded\n" ));
* src/pcf/pcfdrivr.c: Revert change from 2004-04-17. * src/pcf/pcfutil.c: Use FT_LOCAL_DEF. * src/pcf/pcfutil.h: Include FT_CONFIG_CONFIG_H. Use FT_BEGIN_HEADER and FT_END_HEADER. Use FT_LOCAL. 2004-04-24 George Williams <gww@silcom.com> Add support for Apple's distortable font technology (in GX fonts). * devel/ftoption.h, include/freetype/config/ftoption.h (TT_CONFIG_OPTION_GX_VAR_SUPPORT): New macro. * include/freetype/ftmm.h (FT_Var_Axis, FT_Var_Named_Style, FT_MM_Var): New structures. (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates, FT_Set_Var_Blend_Coordinates): New function declarations. * include/freetype/internal/services/svmm.h (FT_Get_MM_Var_Func, FT_Set_Var_Design_Func): New typedefs. Update MultiMasters service. * include/freetype/internal/tttypes.h [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include FT_MULTIPLE_MASTERS_H. (GX_Blend) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New typedef. (TT_Face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New members `doblend' and `blend'. * include/freetype/tttags.h (TTAG_avar, TTAG_cvar, TTAG_gvar): New macros. * include/freetype/internal/fttrace.h: Add `ttgxvar'. * src/base/ftmm.c (FT_Get_MM_Var, FT_Set_Var_Design_Coordinates, FT_Set_Var_Blend_Coordinates): New functions. * src/sfnt/sfobjs.c (sfnt_load_face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Set FT_FACE_FLAG_MULTIPLE_MASTERS flag for GX var fonts. * src/truetype/ttgxvar.c, src/truetype/ttgxvar.h: New files. * src/truetype/truetype.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.c. * src/truetype/ttdriver.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include FT_MULTIPLE_MASTERS_H, FT_SERVICE_MULTIPLE_MASTERS_H, and ttgxvar.h. (tt_service_gx_multi_masters) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: New service. (tt_services) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Updated. * src/truetype/ttgload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (TT_Process_Simple_Glyph, load_truetype_glyph) [TT_CONFIG_OPTION_GX_VAR_SUPPORT] :Support GX var fonts. * src/truetype/ttobjs.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (tt_done_face) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call tt_done_blend. * src/truetype/ttpload.c [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Include ttgxvar.h. (tt_face_load_cvt) [TT_CONFIG_OPTION_GX_VAR_SUPPORT]: Call tt_face_vary_cvt. * src/truetype/rules.mk (TT_DRV_SRC): Add ttgxvar.c. * src/type1/t1driver.c (t1_service_multi_masters): Add T1_Get_MM_Var and T1_Set_Var_Design. * src/type1/t1load.c (FT_INT_TO_FIXED, FT_FIXED_TO_INT): New macros. (T1_Get_MM_Var, T1_Set_Var_Design): New functions. * src/type1/t1load.h (T1_Get_MM_Var, T1_Set_Var_Design): New function declarations.
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#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
if ( face->doblend )
error = tt_face_vary_cvt( face, stream );
#endif
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Exit:
return error;
#else /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
FT_UNUSED( face );
FT_UNUSED( stream );
return TT_Err_Ok;
#endif
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}
/*************************************************************************/
/* */
/* <Function> */
/* tt_face_load_fpgm */
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/* */
/* <Description> */
/* Loads the font program and the cvt program. */
/* */
/* <InOut> */
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/* face :: A handle to the target face object. */
/* */
/* <Input> */
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/* stream :: A handle to the input stream. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
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/* */
FT_LOCAL_DEF( FT_Error )
tt_face_load_fpgm( TT_Face face,
FT_Stream stream )
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{
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
FT_Error error;
FT_ULong table_len;
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FT_TRACE2(( "Font program " ));
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/* The font program is optional */
error = face->goto_table( face, TTAG_fpgm, stream, &table_len );
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if ( error )
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{
face->font_program = NULL;
face->font_program_size = 0;
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FT_TRACE2(( "is missing!\n" ));
}
else
{
face->font_program_size = table_len;
if ( FT_FRAME_EXTRACT( table_len, face->font_program ) )
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goto Exit;
FT_TRACE2(( "loaded, %12d bytes\n", face->font_program_size ));
}
FT_TRACE2(( "Prep program " ));
error = face->goto_table( face, TTAG_prep, stream, &table_len );
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if ( error )
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{
face->cvt_program = NULL;
face->cvt_program_size = 0;
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error = TT_Err_Ok;
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FT_TRACE2(( "is missing!\n" ));
}
else
{
face->cvt_program_size = table_len;
if ( FT_FRAME_EXTRACT( table_len, face->cvt_program ) )
goto Exit;
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FT_TRACE2(( "loaded, %12d bytes\n", face->cvt_program_size ));
}
Exit:
return error;
#else /* !TT_CONFIG_OPTION_BYTECODE_INTERPRETER */
FT_UNUSED( face );
FT_UNUSED( stream );
return TT_Err_Ok;
#endif
1999-12-17 00:11:37 +01:00
}
/* END */