-/***************************************************************************/
-/* */
-/* 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 */
+/***************************************************************************/\r
+/* */\r
+/* gxvopbd.c */\r
+/* */\r
+/* TrueTypeGX/AAT opbd table validation (body). */\r
+/* */\r
+/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */\r
+/* David Turner, Robert Wilhelm, and Werner Lemberg. */\r
+/* */\r
+/* This file is part of the FreeType project, and may only be used, */\r
+/* modified, and distributed under the terms of the FreeType project */\r
+/* license, LICENSE.TXT. By continuing to use, modify, or distribute */\r
+/* this file you indicate that you have read the license and */\r
+/* understand and accept it fully. */\r
+/* */\r
+/***************************************************************************/\r
+\r
+/***************************************************************************/\r
+/* */\r
+/* gxvalid is derived from both gxlayout module and otvalid module. */\r
+/* Development of gxlayout is supported by the Information-technology */\r
+/* Promotion Agency(IPA), Japan. */\r
+/* */\r
+/***************************************************************************/\r
+\r
+\r
+#include "gxvalid.h"\r
+#include "gxvcommn.h"\r
+\r
+\r
+ /*************************************************************************/\r
+ /* */\r
+ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */\r
+ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */\r
+ /* messages during execution. */\r
+ /* */\r
+#undef FT_COMPONENT\r
+#define FT_COMPONENT trace_gxvopbd\r
+\r
+\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+ /***** *****/\r
+ /***** Data and Types *****/\r
+ /***** *****/\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+\r
+ typedef struct GXV_opbd_DataRec_\r
+ {\r
+ FT_UShort format;\r
+ FT_UShort valueOffset_min;\r
+\r
+ } GXV_opbd_DataRec, *GXV_opbd_Data;\r
+\r
+\r
+#define GXV_OPBD_DATA( FIELD ) GXV_TABLE_DATA( opbd, FIELD )\r
+\r
+\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+ /***** *****/\r
+ /***** UTILITY FUNCTIONS *****/\r
+ /***** *****/\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+\r
+ static void\r
+ gxv_opbd_LookupValue_validate( FT_UShort glyph,\r
+ GXV_LookupValueDesc value,\r
+ GXV_Validator valid )\r
+ {\r
+ /* offset in LookupTable is measured from the head of opbd table */\r
+ FT_Bytes p = valid->root->base + value.u;\r
+ FT_Bytes limit = valid->root->limit;\r
+ FT_Short delta_value;\r
+ int i;\r
+\r
+\r
+ if ( value.u < GXV_OPBD_DATA( valueOffset_min ) )\r
+ GXV_OPBD_DATA( valueOffset_min ) = value.u;\r
+\r
+ for ( i = 0; i < 4; i++ )\r
+ {\r
+ GXV_LIMIT_CHECK( 2 );\r
+ delta_value = FT_NEXT_SHORT( p );\r
+\r
+ if ( GXV_OPBD_DATA( format ) ) /* format 1, value is ctrl pt. */\r
+ {\r
+ if ( delta_value == -1 )\r
+ continue;\r
+\r
+ gxv_ctlPoint_validate( glyph, delta_value, valid );\r
+ }\r
+ else /* format 0, value is distance */\r
+ continue;\r
+ }\r
+ }\r
+\r
+\r
+ /*\r
+ opbd ---------------------+\r
+ |\r
+ +===============+ |\r
+ | lookup header | |\r
+ +===============+ |\r
+ | BinSrchHeader | |\r
+ +===============+ |\r
+ | lastGlyph[0] | |\r
+ +---------------+ |\r
+ | firstGlyph[0] | | head of opbd sfnt table\r
+ +---------------+ | +\r
+ | offset[0] | -> | offset [byte]\r
+ +===============+ | +\r
+ | lastGlyph[1] | | (glyphID - firstGlyph) * 4 * sizeof(FT_Short) [byte]\r
+ +---------------+ |\r
+ | firstGlyph[1] | |\r
+ +---------------+ |\r
+ | offset[1] | |\r
+ +===============+ |\r
+ |\r
+ .... |\r
+ |\r
+ 48bit value array |\r
+ +===============+ |\r
+ | value | <-------+\r
+ | |\r
+ | |\r
+ | |\r
+ +---------------+\r
+ .... */\r
+\r
+ static GXV_LookupValueDesc\r
+ gxv_opbd_LookupFmt4_transit( FT_UShort relative_gindex,\r
+ GXV_LookupValueDesc base_value,\r
+ FT_Bytes lookuptbl_limit,\r
+ GXV_Validator valid )\r
+ {\r
+ GXV_LookupValueDesc value;\r
+\r
+ FT_UNUSED( lookuptbl_limit );\r
+ FT_UNUSED( valid );\r
+\r
+ /* XXX: check range? */\r
+ value.u = (FT_UShort)( base_value.u +\r
+ relative_gindex * 4 * sizeof ( FT_Short ) );\r
+\r
+ return value;\r
+ }\r
+\r
+\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+ /***** *****/\r
+ /***** opbd TABLE *****/\r
+ /***** *****/\r
+ /*************************************************************************/\r
+ /*************************************************************************/\r
+\r
+ FT_LOCAL_DEF( void )\r
+ gxv_opbd_validate( FT_Bytes table,\r
+ FT_Face face,\r
+ FT_Validator ftvalid )\r
+ {\r
+ GXV_ValidatorRec validrec;\r
+ GXV_Validator valid = &validrec;\r
+ GXV_opbd_DataRec opbdrec;\r
+ GXV_opbd_Data opbd = &opbdrec;\r
+ FT_Bytes p = table;\r
+ FT_Bytes limit = 0;\r
+\r
+ FT_ULong version;\r
+\r
+\r
+ valid->root = ftvalid;\r
+ valid->table_data = opbd;\r
+ valid->face = face;\r
+\r
+ FT_TRACE3(( "validating `opbd' table\n" ));\r
+ GXV_INIT;\r
+ GXV_OPBD_DATA( valueOffset_min ) = 0xFFFFU;\r
+\r
+\r
+ GXV_LIMIT_CHECK( 4 + 2 );\r
+ version = FT_NEXT_ULONG( p );\r
+ GXV_OPBD_DATA( format ) = FT_NEXT_USHORT( p );\r
+\r
+\r
+ /* only 0x00010000 is defined (1996) */\r
+ GXV_TRACE(( "(version=0x%08x)\n", version ));\r
+ if ( 0x00010000UL != version )\r
+ FT_INVALID_FORMAT;\r
+\r
+ /* only values 0 and 1 are defined (1996) */\r
+ GXV_TRACE(( "(format=0x%04x)\n", GXV_OPBD_DATA( format ) ));\r
+ if ( 0x0001 < GXV_OPBD_DATA( format ) )\r
+ FT_INVALID_FORMAT;\r
+\r
+ valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED;\r
+ valid->lookupval_func = gxv_opbd_LookupValue_validate;\r
+ valid->lookupfmt4_trans = gxv_opbd_LookupFmt4_transit;\r
+\r
+ gxv_LookupTable_validate( p, limit, valid );\r
+ p += valid->subtable_length;\r
+\r
+ if ( p > table + GXV_OPBD_DATA( valueOffset_min ) )\r
+ {\r
+ GXV_TRACE((\r
+ "found overlap between LookupTable and opbd_value array\n" ));\r
+ FT_INVALID_OFFSET;\r
+ }\r
+\r
+ FT_TRACE4(( "\n" ));\r
+ }\r
+\r
+\r
+/* END */\r
projects / reactos.git / blobdiff