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Diffstat (limited to 'src/gxvalid/gxvopbd.c')
| -rw-r--r-- | src/gxvalid/gxvopbd.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/src/gxvalid/gxvopbd.c b/src/gxvalid/gxvopbd.c deleted file mode 100644 index 8d6fe66..0000000 --- a/src/gxvalid/gxvopbd.c +++ /dev/null @@ -1,217 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvopbd.c */ -/* */ -/* TrueTypeGX/AAT opbd table validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* 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 */ -/* 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. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* 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. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvopbd - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct GXV_opbd_DataRec_ - { - FT_UShort format; - FT_UShort valueOffset_min; - - } GXV_opbd_DataRec, *GXV_opbd_Data; - - -#define GXV_OPBD_DATA( FIELD ) GXV_TABLE_DATA( opbd, FIELD ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_opbd_LookupValue_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - /* offset in LookupTable is measured from the head of opbd table */ - FT_Bytes p = valid->root->base + value.u; - FT_Bytes limit = valid->root->limit; - FT_Short delta_value; - int i; - - - if ( value.u < GXV_OPBD_DATA( valueOffset_min ) ) - GXV_OPBD_DATA( valueOffset_min ) = value.u; - - for ( i = 0; i < 4; i++ ) - { - GXV_LIMIT_CHECK( 2 ); - delta_value = FT_NEXT_SHORT( p ); - - if ( GXV_OPBD_DATA( format ) ) /* format 1, value is ctrl pt. */ - { - if ( delta_value == -1 ) - continue; - - gxv_ctlPoint_validate( glyph, delta_value, valid ); - } - else /* format 0, value is distance */ - continue; - } - } - - - /* - opbd ---------------------+ - | - +===============+ | - | lookup header | | - +===============+ | - | BinSrchHeader | | - +===============+ | - | lastGlyph[0] | | - +---------------+ | - | firstGlyph[0] | | head of opbd sfnt table - +---------------+ | + - | offset[0] | -> | offset [byte] - +===============+ | + - | lastGlyph[1] | | (glyphID - firstGlyph) * 4 * sizeof(FT_Short) [byte] - +---------------+ | - | firstGlyph[1] | | - +---------------+ | - | offset[1] | | - +===============+ | - | - .... | - | - 48bit value array | - +===============+ | - | value | <-------+ - | | - | | - | | - +---------------+ - .... */ - - static GXV_LookupValueDesc - gxv_opbd_LookupFmt4_transit( FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - GXV_LookupValueDesc value; - - FT_UNUSED( lookuptbl_limit ); - FT_UNUSED( valid ); - - /* XXX: check range? */ - value.u = (FT_UShort)( base_value.u + - relative_gindex * 4 * sizeof ( FT_Short ) ); - - return value; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** opbd TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_opbd_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - GXV_opbd_DataRec opbdrec; - GXV_opbd_Data opbd = &opbdrec; - FT_Bytes p = table; - FT_Bytes limit = 0; - - FT_ULong version; - - - valid->root = ftvalid; - valid->table_data = opbd; - valid->face = face; - - FT_TRACE3(( "validating `opbd' table\n" )); - GXV_INIT; - GXV_OPBD_DATA( valueOffset_min ) = 0xFFFFU; - - - GXV_LIMIT_CHECK( 4 + 2 ); - version = FT_NEXT_ULONG( p ); - GXV_OPBD_DATA( format ) = FT_NEXT_USHORT( p ); - - - /* only 0x00010000 is defined (1996) */ - GXV_TRACE(( "(version=0x%08x)\n", version )); - if ( 0x00010000UL != version ) - FT_INVALID_FORMAT; - - /* only values 0 and 1 are defined (1996) */ - GXV_TRACE(( "(format=0x%04x)\n", GXV_OPBD_DATA( format ) )); - if ( 0x0001 < GXV_OPBD_DATA( format ) ) - FT_INVALID_FORMAT; - - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_opbd_LookupValue_validate; - valid->lookupfmt4_trans = gxv_opbd_LookupFmt4_transit; - - gxv_LookupTable_validate( p, limit, valid ); - p += valid->subtable_length; - - if ( p > table + GXV_OPBD_DATA( valueOffset_min ) ) - { - GXV_TRACE(( - "found overlap between LookupTable and opbd_value array\n" )); - FT_INVALID_OFFSET; - } - - FT_TRACE4(( "\n" )); - } - - -/* END */ |