2 * Opentype font interfaces for the Uniscribe Script Processor (usp10.dll)
4 * Copyright 2012 CodeWeavers, Aric Stewart
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
32 #include "usp10_internal.h"
34 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(uniscribe
);
38 #ifdef WORDS_BIGENDIAN
39 #define GET_BE_WORD(x) (x)
40 #define GET_BE_DWORD(x) (x)
42 #define GET_BE_WORD(x) RtlUshortByteSwap(x)
43 #define GET_BE_DWORD(x) RtlUlongByteSwap(x)
46 /* These are all structures needed for the cmap format 12 table */
47 #define CMAP_TAG MS_MAKE_TAG('c', 'm', 'a', 'p')
53 } CMAP_EncodingRecord
;
58 CMAP_EncodingRecord tables
[1];
65 } CMAP_SegmentedCoverage_group
;
73 CMAP_SegmentedCoverage_group groups
[1];
74 } CMAP_SegmentedCoverage
;
76 /* These are all structures needed for the GDEF table */
77 #define GDEF_TAG MS_MAKE_TAG('G', 'D', 'E', 'F')
79 enum {BaseGlyph
=1, LigatureGlyph
, MarkGlyph
, ComponentGlyph
};
86 WORD MarkAttachClassDef
;
93 WORD ClassValueArray
[1];
94 } GDEF_ClassDefFormat1
;
100 } GDEF_ClassRangeRecord
;
104 WORD ClassRangeCount
;
105 GDEF_ClassRangeRecord ClassRangeRecord
[1];
106 } GDEF_ClassDefFormat2
;
108 /* These are all structures needed for the GSUB table */
124 OT_ScriptRecord ScriptRecord
[1];
135 OT_LangSysRecord LangSysRecord
[1];
139 WORD LookupOrder
; /* Reserved */
140 WORD ReqFeatureIndex
;
142 WORD FeatureIndex
[1];
152 OT_FeatureRecord FeatureRecord
[1];
156 WORD FeatureParams
; /* Reserved */
158 WORD LookupListIndex
[1];
177 } OT_CoverageFormat1
;
182 WORD StartCoverageIndex
;
188 OT_RangeRecord RangeRecord
[1];
189 } OT_CoverageFormat2
;
192 WORD SubstFormat
; /* = 1 */
195 } GSUB_SingleSubstFormat1
;
198 WORD SubstFormat
; /* = 2 */
202 }GSUB_SingleSubstFormat2
;
205 WORD SubstFormat
; /* = 1 */
209 }GSUB_MultipleSubstFormat1
;
217 WORD SubstFormat
; /* = 1 */
221 }GSUB_LigatureSubstFormat1
;
236 WORD LookupListIndex
;
238 }GSUB_SubstLookupRecord
;
241 WORD SubstFormat
; /* = 1 */
243 WORD ChainSubRuleSetCount
;
244 WORD ChainSubRuleSet
[1];
245 }GSUB_ChainContextSubstFormat1
;
248 WORD SubstFormat
; /* = 3 */
249 WORD BacktrackGlyphCount
;
251 }GSUB_ChainContextSubstFormat3_1
;
254 WORD InputGlyphCount
;
256 }GSUB_ChainContextSubstFormat3_2
;
259 WORD LookaheadGlyphCount
;
261 }GSUB_ChainContextSubstFormat3_3
;
265 GSUB_SubstLookupRecord SubstLookupRecord
[1];
266 }GSUB_ChainContextSubstFormat3_4
;
269 WORD SubstFormat
; /* = 1 */
271 WORD AlternateSetCount
;
272 WORD AlternateSet
[1];
273 } GSUB_AlternateSubstFormat1
;
280 /* These are all structures needed for the GPOS table */
300 } GPOS_AnchorFormat1
;
307 } GPOS_AnchorFormat2
;
315 } GPOS_AnchorFormat3
;
333 } GPOS_SinglePosFormat1
;
341 } GPOS_SinglePosFormat2
;
349 WORD PairSetOffset
[1];
350 } GPOS_PairPosFormat1
;
356 } GPOS_PairValueRecord
;
360 GPOS_PairValueRecord PairValueRecord
[1];
370 } GPOS_MarkBasePosFormat1
;
378 GPOS_BaseRecord BaseRecord
[1];
388 GPOS_MarkRecord MarkRecord
[1];
393 WORD LookupListIndex
;
394 } GPOS_PosLookupRecord
;
398 WORD BacktrackGlyphCount
;
400 } GPOS_ChainContextPosFormat3_1
;
403 WORD InputGlyphCount
;
405 } GPOS_ChainContextPosFormat3_2
;
408 WORD LookaheadGlyphCount
;
410 } GPOS_ChainContextPosFormat3_3
;
414 GPOS_PosLookupRecord PosLookupRecord
[1];
415 } GPOS_ChainContextPosFormat3_4
;
421 static VOID
*load_CMAP_format12_table(HDC hdc
, ScriptCache
*psc
)
423 CMAP_Header
*CMAP_Table
= NULL
;
427 if (!psc
->CMAP_Table
)
429 length
= GetFontData(hdc
, CMAP_TAG
, 0, NULL
, 0);
430 if (length
!= GDI_ERROR
)
432 psc
->CMAP_Table
= HeapAlloc(GetProcessHeap(),0,length
);
433 GetFontData(hdc
, CMAP_TAG
, 0, psc
->CMAP_Table
, length
);
434 TRACE("Loaded cmap table of %i bytes\n",length
);
440 CMAP_Table
= psc
->CMAP_Table
;
442 for (i
= 0; i
< GET_BE_WORD(CMAP_Table
->numTables
); i
++)
444 if ( (GET_BE_WORD(CMAP_Table
->tables
[i
].platformID
) == 3) &&
445 (GET_BE_WORD(CMAP_Table
->tables
[i
].encodingID
) == 10) )
447 CMAP_SegmentedCoverage
*format
= (CMAP_SegmentedCoverage
*)(((BYTE
*)CMAP_Table
) + GET_BE_DWORD(CMAP_Table
->tables
[i
].offset
));
448 if (GET_BE_WORD(format
->format
) == 12)
455 static int compare_group(const void *a
, const void* b
)
457 const DWORD
*chr
= a
;
458 const CMAP_SegmentedCoverage_group
*group
= b
;
460 if (*chr
< GET_BE_DWORD(group
->startCharCode
))
462 if (*chr
> GET_BE_DWORD(group
->endCharCode
))
467 DWORD
OpenType_CMAP_GetGlyphIndex(HDC hdc
, ScriptCache
*psc
, DWORD utf32c
, LPWORD pgi
, DWORD flags
)
469 /* BMP: use gdi32 for ease */
470 if (utf32c
< 0x10000)
473 return GetGlyphIndicesW(hdc
,&ch
, 1, pgi
, flags
);
476 if (!psc
->CMAP_format12_Table
)
477 psc
->CMAP_format12_Table
= load_CMAP_format12_table(hdc
, psc
);
479 if (flags
& GGI_MARK_NONEXISTING_GLYPHS
)
484 if (psc
->CMAP_format12_Table
)
486 CMAP_SegmentedCoverage
*format
= NULL
;
487 CMAP_SegmentedCoverage_group
*group
= NULL
;
489 format
= (CMAP_SegmentedCoverage
*)psc
->CMAP_format12_Table
;
491 group
= bsearch(&utf32c
, format
->groups
, GET_BE_DWORD(format
->nGroups
),
492 sizeof(CMAP_SegmentedCoverage_group
), compare_group
);
496 DWORD offset
= utf32c
- GET_BE_DWORD(group
->startCharCode
);
497 *pgi
= GET_BE_DWORD(group
->startGlyphID
) + offset
;
508 static WORD
GDEF_get_glyph_class(const GDEF_Header
*header
, WORD glyph
)
512 const GDEF_ClassDefFormat1
*cf1
;
517 offset
= GET_BE_WORD(header
->GlyphClassDef
);
521 cf1
= (GDEF_ClassDefFormat1
*)(((BYTE
*)header
)+offset
);
522 if (GET_BE_WORD(cf1
->ClassFormat
) == 1)
524 if (glyph
>= GET_BE_WORD(cf1
->StartGlyph
))
526 int index
= glyph
- GET_BE_WORD(cf1
->StartGlyph
);
527 if (index
< GET_BE_WORD(cf1
->GlyphCount
))
528 class = GET_BE_WORD(cf1
->ClassValueArray
[index
]);
531 else if (GET_BE_WORD(cf1
->ClassFormat
) == 2)
533 const GDEF_ClassDefFormat2
*cf2
= (GDEF_ClassDefFormat2
*)cf1
;
535 top
= GET_BE_WORD(cf2
->ClassRangeCount
);
536 for (i
= 0; i
< top
; i
++)
538 if (glyph
>= GET_BE_WORD(cf2
->ClassRangeRecord
[i
].Start
) &&
539 glyph
<= GET_BE_WORD(cf2
->ClassRangeRecord
[i
].End
))
541 class = GET_BE_WORD(cf2
->ClassRangeRecord
[i
].Class
);
547 ERR("Unknown Class Format %i\n",GET_BE_WORD(cf1
->ClassFormat
));
552 static VOID
*load_gdef_table(HDC hdc
)
554 VOID
* GDEF_Table
= NULL
;
555 int length
= GetFontData(hdc
, GDEF_TAG
, 0, NULL
, 0);
556 if (length
!= GDI_ERROR
)
558 GDEF_Table
= HeapAlloc(GetProcessHeap(),0,length
);
559 GetFontData(hdc
, GDEF_TAG
, 0, GDEF_Table
, length
);
560 TRACE("Loaded GDEF table of %i bytes\n",length
);
565 void OpenType_GDEF_UpdateGlyphProps(HDC hdc
, ScriptCache
*psc
, const WORD
*pwGlyphs
, const WORD cGlyphs
, WORD
* pwLogClust
, const WORD cChars
, SCRIPT_GLYPHPROP
*pGlyphProp
)
569 if (!psc
->GDEF_Table
)
570 psc
->GDEF_Table
= load_gdef_table(hdc
);
572 for (i
= 0; i
< cGlyphs
; i
++)
578 k
= USP10_FindGlyphInLogClust(pwLogClust
, cChars
, i
);
581 for (; k
< cChars
&& pwLogClust
[k
] == i
; k
++)
585 class = GDEF_get_glyph_class(psc
->GDEF_Table
, pwGlyphs
[i
]);
591 pGlyphProp
[i
].sva
.fClusterStart
= 1;
592 pGlyphProp
[i
].sva
.fDiacritic
= 0;
593 pGlyphProp
[i
].sva
.fZeroWidth
= 0;
596 pGlyphProp
[i
].sva
.fClusterStart
= 1;
597 pGlyphProp
[i
].sva
.fDiacritic
= 0;
598 pGlyphProp
[i
].sva
.fZeroWidth
= 0;
601 pGlyphProp
[i
].sva
.fClusterStart
= 0;
602 pGlyphProp
[i
].sva
.fDiacritic
= 1;
603 pGlyphProp
[i
].sva
.fZeroWidth
= 1;
606 pGlyphProp
[i
].sva
.fClusterStart
= 0;
607 pGlyphProp
[i
].sva
.fDiacritic
= 0;
608 pGlyphProp
[i
].sva
.fZeroWidth
= 0;
611 ERR("Unknown glyph class %i\n",class);
612 pGlyphProp
[i
].sva
.fClusterStart
= 1;
613 pGlyphProp
[i
].sva
.fDiacritic
= 0;
614 pGlyphProp
[i
].sva
.fZeroWidth
= 0;
618 pGlyphProp
[i
].sva
.fClusterStart
= 0;
625 static INT
GSUB_apply_lookup(const OT_LookupList
* lookup
, INT lookup_index
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
);
627 static INT
GSUB_is_glyph_covered(LPCVOID table
, UINT glyph
)
629 const OT_CoverageFormat1
* cf1
;
633 if (GET_BE_WORD(cf1
->CoverageFormat
) == 1)
635 int count
= GET_BE_WORD(cf1
->GlyphCount
);
637 TRACE("Coverage Format 1, %i glyphs\n",count
);
638 for (i
= 0; i
< count
; i
++)
639 if (glyph
== GET_BE_WORD(cf1
->GlyphArray
[i
]))
643 else if (GET_BE_WORD(cf1
->CoverageFormat
) == 2)
645 const OT_CoverageFormat2
* cf2
;
648 cf2
= (const OT_CoverageFormat2
*)cf1
;
650 count
= GET_BE_WORD(cf2
->RangeCount
);
651 TRACE("Coverage Format 2, %i ranges\n",count
);
652 for (i
= 0; i
< count
; i
++)
654 if (glyph
< GET_BE_WORD(cf2
->RangeRecord
[i
].Start
))
656 if ((glyph
>= GET_BE_WORD(cf2
->RangeRecord
[i
].Start
)) &&
657 (glyph
<= GET_BE_WORD(cf2
->RangeRecord
[i
].End
)))
659 return (GET_BE_WORD(cf2
->RangeRecord
[i
].StartCoverageIndex
) +
660 glyph
- GET_BE_WORD(cf2
->RangeRecord
[i
].Start
));
666 ERR("Unknown CoverageFormat %i\n",GET_BE_WORD(cf1
->CoverageFormat
));
671 static INT
GSUB_apply_SingleSubst(const OT_LookupTable
*look
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
)
674 TRACE("Single Substitution Subtable\n");
676 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
679 const GSUB_SingleSubstFormat1
*ssf1
;
680 offset
= GET_BE_WORD(look
->SubTable
[j
]);
681 ssf1
= (const GSUB_SingleSubstFormat1
*)((const BYTE
*)look
+offset
);
682 if (GET_BE_WORD(ssf1
->SubstFormat
) == 1)
684 int offset
= GET_BE_WORD(ssf1
->Coverage
);
685 TRACE(" subtype 1, delta %i\n", GET_BE_WORD(ssf1
->DeltaGlyphID
));
686 if (GSUB_is_glyph_covered((const BYTE
*)ssf1
+offset
, glyphs
[glyph_index
]) != -1)
688 TRACE(" Glyph 0x%x ->",glyphs
[glyph_index
]);
689 glyphs
[glyph_index
] = glyphs
[glyph_index
] + GET_BE_WORD(ssf1
->DeltaGlyphID
);
690 TRACE(" 0x%x\n",glyphs
[glyph_index
]);
691 return glyph_index
+ write_dir
;
696 const GSUB_SingleSubstFormat2
*ssf2
;
700 ssf2
= (const GSUB_SingleSubstFormat2
*)ssf1
;
701 offset
= GET_BE_WORD(ssf1
->Coverage
);
702 TRACE(" subtype 2, glyph count %i\n", GET_BE_WORD(ssf2
->GlyphCount
));
703 index
= GSUB_is_glyph_covered((const BYTE
*)ssf2
+offset
, glyphs
[glyph_index
]);
704 TRACE(" Coverage index %i\n",index
);
707 if (glyphs
[glyph_index
] == GET_BE_WORD(ssf2
->Substitute
[index
]))
708 return GSUB_E_NOGLYPH
;
710 TRACE(" Glyph is 0x%x ->",glyphs
[glyph_index
]);
711 glyphs
[glyph_index
] = GET_BE_WORD(ssf2
->Substitute
[index
]);
712 TRACE("0x%x\n",glyphs
[glyph_index
]);
713 return glyph_index
+ write_dir
;
717 return GSUB_E_NOGLYPH
;
720 static INT
GSUB_apply_MultipleSubst(const OT_LookupTable
*look
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
)
723 TRACE("Multiple Substitution Subtable\n");
725 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
728 const GSUB_MultipleSubstFormat1
*msf1
;
729 offset
= GET_BE_WORD(look
->SubTable
[j
]);
730 msf1
= (const GSUB_MultipleSubstFormat1
*)((const BYTE
*)look
+offset
);
732 offset
= GET_BE_WORD(msf1
->Coverage
);
733 index
= GSUB_is_glyph_covered((const BYTE
*)msf1
+offset
, glyphs
[glyph_index
]);
736 const GSUB_Sequence
*seq
;
739 offset
= GET_BE_WORD(msf1
->Sequence
[index
]);
740 seq
= (const GSUB_Sequence
*)((const BYTE
*)msf1
+offset
);
741 sub_count
= GET_BE_WORD(seq
->GlyphCount
);
742 TRACE(" Glyph 0x%x (+%i)->",glyphs
[glyph_index
],(sub_count
-1));
744 for (j
= (*glyph_count
)+(sub_count
-1); j
> glyph_index
; j
--)
745 glyphs
[j
] =glyphs
[j
-(sub_count
-1)];
747 for (j
= 0; j
< sub_count
; j
++)
749 glyphs
[glyph_index
+ (sub_count
-1) - j
] = GET_BE_WORD(seq
->Substitute
[j
]);
751 glyphs
[glyph_index
+ j
] = GET_BE_WORD(seq
->Substitute
[j
]);
753 *glyph_count
= *glyph_count
+ (sub_count
- 1);
755 if (TRACE_ON(uniscribe
))
757 for (j
= 0; j
< sub_count
; j
++)
758 TRACE(" 0x%x",glyphs
[glyph_index
+j
]);
762 return glyph_index
+ (sub_count
* write_dir
);
765 return GSUB_E_NOGLYPH
;
768 static INT
GSUB_apply_AlternateSubst(const OT_LookupTable
*look
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
)
771 TRACE("Alternate Substitution Subtable\n");
773 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
776 const GSUB_AlternateSubstFormat1
*asf1
;
779 offset
= GET_BE_WORD(look
->SubTable
[j
]);
780 asf1
= (const GSUB_AlternateSubstFormat1
*)((const BYTE
*)look
+offset
);
781 offset
= GET_BE_WORD(asf1
->Coverage
);
783 index
= GSUB_is_glyph_covered((const BYTE
*)asf1
+offset
, glyphs
[glyph_index
]);
786 const GSUB_AlternateSet
*as
;
787 offset
= GET_BE_WORD(asf1
->AlternateSet
[index
]);
788 as
= (const GSUB_AlternateSet
*)((const BYTE
*)asf1
+offset
);
789 FIXME("%i alternates, picking index 0\n",GET_BE_WORD(as
->GlyphCount
));
790 if (glyphs
[glyph_index
] == GET_BE_WORD(as
->Alternate
[0]))
791 return GSUB_E_NOGLYPH
;
793 TRACE(" Glyph 0x%x ->",glyphs
[glyph_index
]);
794 glyphs
[glyph_index
] = GET_BE_WORD(as
->Alternate
[0]);
795 TRACE(" 0x%x\n",glyphs
[glyph_index
]);
796 return glyph_index
+ write_dir
;
799 return GSUB_E_NOGLYPH
;
802 static INT
GSUB_apply_LigatureSubst(const OT_LookupTable
*look
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
)
806 TRACE("Ligature Substitution Subtable\n");
807 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
809 const GSUB_LigatureSubstFormat1
*lsf1
;
812 offset
= GET_BE_WORD(look
->SubTable
[j
]);
813 lsf1
= (const GSUB_LigatureSubstFormat1
*)((const BYTE
*)look
+offset
);
814 offset
= GET_BE_WORD(lsf1
->Coverage
);
815 index
= GSUB_is_glyph_covered((const BYTE
*)lsf1
+offset
, glyphs
[glyph_index
]);
816 TRACE(" Coverage index %i\n",index
);
819 const GSUB_LigatureSet
*ls
;
822 offset
= GET_BE_WORD(lsf1
->LigatureSet
[index
]);
823 ls
= (const GSUB_LigatureSet
*)((const BYTE
*)lsf1
+offset
);
824 count
= GET_BE_WORD(ls
->LigatureCount
);
825 TRACE(" LigatureSet has %i members\n",count
);
826 for (k
= 0; k
< count
; k
++)
828 const GSUB_Ligature
*lig
;
829 int CompCount
,l
,CompIndex
;
831 offset
= GET_BE_WORD(ls
->Ligature
[k
]);
832 lig
= (const GSUB_Ligature
*)((const BYTE
*)ls
+offset
);
833 CompCount
= GET_BE_WORD(lig
->CompCount
) - 1;
834 CompIndex
= glyph_index
+write_dir
;
835 for (l
= 0; l
< CompCount
&& CompIndex
>= 0 && CompIndex
< *glyph_count
; l
++)
838 CompGlyph
= GET_BE_WORD(lig
->Component
[l
]);
839 if (CompGlyph
!= glyphs
[CompIndex
])
841 CompIndex
+= write_dir
;
845 int replaceIdx
= glyph_index
;
847 replaceIdx
= glyph_index
- CompCount
;
849 TRACE(" Glyph is 0x%x (+%i) ->",glyphs
[glyph_index
],CompCount
);
850 glyphs
[replaceIdx
] = GET_BE_WORD(lig
->LigGlyph
);
851 TRACE("0x%x\n",glyphs
[replaceIdx
]);
855 for (j
= replaceIdx
+ 1; j
< *glyph_count
; j
++)
856 glyphs
[j
] =glyphs
[j
+CompCount
];
857 *glyph_count
= *glyph_count
- CompCount
;
859 return replaceIdx
+ write_dir
;
864 return GSUB_E_NOGLYPH
;
867 static INT
GSUB_apply_ChainContextSubst(const OT_LookupList
* lookup
, const OT_LookupTable
*look
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
)
872 TRACE("Chaining Contextual Substitution Subtable\n");
873 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
) && !done
; j
++)
875 const GSUB_ChainContextSubstFormat1
*ccsf1
;
877 int dirLookahead
= write_dir
;
878 int dirBacktrack
= -1 * write_dir
;
880 offset
= GET_BE_WORD(look
->SubTable
[j
]);
881 ccsf1
= (const GSUB_ChainContextSubstFormat1
*)((const BYTE
*)look
+offset
);
882 if (GET_BE_WORD(ccsf1
->SubstFormat
) == 1)
884 FIXME(" TODO: subtype 1 (Simple context glyph substitution)\n");
887 else if (GET_BE_WORD(ccsf1
->SubstFormat
) == 2)
889 FIXME(" TODO: subtype 2 (Class-based Chaining Context Glyph Substitution)\n");
892 else if (GET_BE_WORD(ccsf1
->SubstFormat
) == 3)
896 const GSUB_ChainContextSubstFormat3_1
*ccsf3_1
;
897 const GSUB_ChainContextSubstFormat3_2
*ccsf3_2
;
898 const GSUB_ChainContextSubstFormat3_3
*ccsf3_3
;
899 const GSUB_ChainContextSubstFormat3_4
*ccsf3_4
;
900 int newIndex
= glyph_index
;
902 ccsf3_1
= (const GSUB_ChainContextSubstFormat3_1
*)ccsf1
;
904 TRACE(" subtype 3 (Coverage-based Chaining Context Glyph Substitution)\n");
906 for (k
= 0; k
< GET_BE_WORD(ccsf3_1
->BacktrackGlyphCount
); k
++)
908 offset
= GET_BE_WORD(ccsf3_1
->Coverage
[k
]);
909 if (GSUB_is_glyph_covered((const BYTE
*)ccsf3_1
+offset
, glyphs
[glyph_index
+ (dirBacktrack
* (k
+1))]) == -1)
912 if (k
!= GET_BE_WORD(ccsf3_1
->BacktrackGlyphCount
))
914 TRACE("Matched Backtrack\n");
916 ccsf3_2
= (const GSUB_ChainContextSubstFormat3_2
*)(((LPBYTE
)ccsf1
)+sizeof(GSUB_ChainContextSubstFormat3_1
) + (sizeof(WORD
) * (GET_BE_WORD(ccsf3_1
->BacktrackGlyphCount
)-1)));
918 indexGlyphs
= GET_BE_WORD(ccsf3_2
->InputGlyphCount
);
919 for (k
= 0; k
< indexGlyphs
; k
++)
921 offset
= GET_BE_WORD(ccsf3_2
->Coverage
[k
]);
922 if (GSUB_is_glyph_covered((const BYTE
*)ccsf3_1
+offset
, glyphs
[glyph_index
+ (write_dir
* k
)]) == -1)
925 if (k
!= indexGlyphs
)
927 TRACE("Matched IndexGlyphs\n");
929 ccsf3_3
= (const GSUB_ChainContextSubstFormat3_3
*)(((LPBYTE
)ccsf3_2
)+sizeof(GSUB_ChainContextSubstFormat3_2
) + (sizeof(WORD
) * (GET_BE_WORD(ccsf3_2
->InputGlyphCount
)-1)));
931 for (k
= 0; k
< GET_BE_WORD(ccsf3_3
->LookaheadGlyphCount
); k
++)
933 offset
= GET_BE_WORD(ccsf3_3
->Coverage
[k
]);
934 if (GSUB_is_glyph_covered((const BYTE
*)ccsf3_1
+offset
, glyphs
[glyph_index
+ (dirLookahead
* (indexGlyphs
+ k
))]) == -1)
937 if (k
!= GET_BE_WORD(ccsf3_3
->LookaheadGlyphCount
))
939 TRACE("Matched LookAhead\n");
941 ccsf3_4
= (const GSUB_ChainContextSubstFormat3_4
*)(((LPBYTE
)ccsf3_3
)+sizeof(GSUB_ChainContextSubstFormat3_3
) + (sizeof(WORD
) * (GET_BE_WORD(ccsf3_3
->LookaheadGlyphCount
)-1)));
943 if (GET_BE_WORD(ccsf3_4
->SubstCount
))
945 for (k
= 0; k
< GET_BE_WORD(ccsf3_4
->SubstCount
); k
++)
947 int lookupIndex
= GET_BE_WORD(ccsf3_4
->SubstLookupRecord
[k
].LookupListIndex
);
948 int SequenceIndex
= GET_BE_WORD(ccsf3_4
->SubstLookupRecord
[k
].SequenceIndex
) * write_dir
;
950 TRACE("SUBST: %i -> %i %i\n",k
, SequenceIndex
, lookupIndex
);
951 newIndex
= GSUB_apply_lookup(lookup
, lookupIndex
, glyphs
, glyph_index
+ SequenceIndex
, write_dir
, glyph_count
);
954 ERR("Chain failed to generate a glyph\n");
960 else return GSUB_E_NOGLYPH
;
966 static INT
GSUB_apply_lookup(const OT_LookupList
* lookup
, INT lookup_index
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
)
969 const OT_LookupTable
*look
;
971 offset
= GET_BE_WORD(lookup
->Lookup
[lookup_index
]);
972 look
= (const OT_LookupTable
*)((const BYTE
*)lookup
+ offset
);
973 TRACE("type %i, flag %x, subtables %i\n",GET_BE_WORD(look
->LookupType
),GET_BE_WORD(look
->LookupFlag
),GET_BE_WORD(look
->SubTableCount
));
974 switch(GET_BE_WORD(look
->LookupType
))
977 return GSUB_apply_SingleSubst(look
, glyphs
, glyph_index
, write_dir
, glyph_count
);
979 return GSUB_apply_MultipleSubst(look
, glyphs
, glyph_index
, write_dir
, glyph_count
);
981 return GSUB_apply_AlternateSubst(look
, glyphs
, glyph_index
, write_dir
, glyph_count
);
983 return GSUB_apply_LigatureSubst(look
, glyphs
, glyph_index
, write_dir
, glyph_count
);
985 return GSUB_apply_ChainContextSubst(lookup
, look
, glyphs
, glyph_index
, write_dir
, glyph_count
);
987 FIXME("We do not handle SubType %i\n",GET_BE_WORD(look
->LookupType
));
989 return GSUB_E_NOGLYPH
;
992 INT
OpenType_apply_GSUB_lookup(LPCVOID table
, INT lookup_index
, WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT
*glyph_count
)
994 const GSUB_Header
*header
= (const GSUB_Header
*)table
;
995 const OT_LookupList
*lookup
= (const OT_LookupList
*)((const BYTE
*)header
+ GET_BE_WORD(header
->LookupList
));
997 return GSUB_apply_lookup(lookup
, lookup_index
, glyphs
, glyph_index
, write_dir
, glyph_count
);
1003 static INT
GPOS_apply_lookup(LPOUTLINETEXTMETRICW lpotm
, LPLOGFONTW lplogfont
, INT
* piAdvance
, const OT_LookupList
* lookup
, INT lookup_index
, const WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT glyph_count
, GOFFSET
*pGoffset
);
1005 static INT
GPOS_get_device_table_value(const OT_DeviceTable
*DeviceTable
, WORD ppem
)
1007 static const WORD mask
[3] = {3,0xf,0xff};
1008 if (DeviceTable
&& ppem
>= GET_BE_WORD(DeviceTable
->StartSize
) && ppem
<= GET_BE_WORD(DeviceTable
->EndSize
))
1010 int format
= GET_BE_WORD(DeviceTable
->DeltaFormat
);
1011 int index
= ppem
- GET_BE_WORD(DeviceTable
->StartSize
);
1013 TRACE("device table, format %i, index %i\n",format
, index
);
1014 index
= index
<< format
;
1015 value
= (DeviceTable
->DeltaValue
[index
/sizeof(WORD
)] << (index
%sizeof(WORD
)))&mask
[format
-1];
1016 TRACE("offset %i, value %i\n",index
, value
);
1017 if (value
> mask
[format
-1]/2)
1018 value
= -1 * ((mask
[format
-1]+1) - value
);
1024 static VOID
GPOS_get_anchor_values(LPCVOID table
, LPPOINT pt
, WORD ppem
)
1026 const GPOS_AnchorFormat1
* anchor1
= (const GPOS_AnchorFormat1
*)table
;
1028 switch (GET_BE_WORD(anchor1
->AnchorFormat
))
1032 TRACE("Anchor Format 1\n");
1033 pt
->x
= (short)GET_BE_WORD(anchor1
->XCoordinate
);
1034 pt
->y
= (short)GET_BE_WORD(anchor1
->YCoordinate
);
1039 const GPOS_AnchorFormat2
* anchor2
= (const GPOS_AnchorFormat2
*)table
;
1040 TRACE("Anchor Format 2\n");
1041 pt
->x
= (short)GET_BE_WORD(anchor2
->XCoordinate
);
1042 pt
->y
= (short)GET_BE_WORD(anchor2
->YCoordinate
);
1048 const GPOS_AnchorFormat3
* anchor3
= (const GPOS_AnchorFormat3
*)table
;
1049 TRACE("Anchor Format 3\n");
1050 pt
->x
= (short)GET_BE_WORD(anchor3
->XCoordinate
);
1051 pt
->y
= (short)GET_BE_WORD(anchor3
->YCoordinate
);
1052 offset
= GET_BE_WORD(anchor3
->XDeviceTable
);
1053 TRACE("ppem %i\n",ppem
);
1056 const OT_DeviceTable
* DeviceTableX
= NULL
;
1057 DeviceTableX
= (const OT_DeviceTable
*)((const BYTE
*)anchor3
+ offset
);
1058 pt
->x
+= GPOS_get_device_table_value(DeviceTableX
, ppem
);
1060 offset
= GET_BE_WORD(anchor3
->YDeviceTable
);
1063 const OT_DeviceTable
* DeviceTableY
= NULL
;
1064 DeviceTableY
= (const OT_DeviceTable
*)((const BYTE
*)anchor3
+ offset
);
1065 pt
->y
+= GPOS_get_device_table_value(DeviceTableY
, ppem
);
1070 ERR("Unknown Anchor Format %i\n",GET_BE_WORD(anchor1
->AnchorFormat
));
1076 static void GPOS_convert_design_units_to_device(LPOUTLINETEXTMETRICW lpotm
, LPLOGFONTW lplogfont
, int desX
, int desY
, double *devX
, double *devY
)
1078 int emHeight
= lpotm
->otmTextMetrics
.tmAscent
+ lpotm
->otmTextMetrics
.tmDescent
- lpotm
->otmTextMetrics
.tmInternalLeading
;
1080 TRACE("emHeight %i lfWidth %i\n",emHeight
, lplogfont
->lfWidth
);
1081 *devX
= (desX
* emHeight
) / (double)lpotm
->otmEMSquare
;
1082 *devY
= (desY
* emHeight
) / (double)lpotm
->otmEMSquare
;
1083 if (lplogfont
->lfWidth
)
1084 FIXME("Font with lfWidth set no handled properly\n");
1087 static INT
GPOS_get_value_record(WORD ValueFormat
, const WORD data
[], GPOS_ValueRecord
*record
)
1090 if (ValueFormat
& 0x0001) record
->XPlacement
= GET_BE_WORD(data
[offset
++]);
1091 if (ValueFormat
& 0x0002) record
->YPlacement
= GET_BE_WORD(data
[offset
++]);
1092 if (ValueFormat
& 0x0004) record
->XAdvance
= GET_BE_WORD(data
[offset
++]);
1093 if (ValueFormat
& 0x0008) record
->YAdvance
= GET_BE_WORD(data
[offset
++]);
1094 if (ValueFormat
& 0x0010) record
->XPlaDevice
= GET_BE_WORD(data
[offset
++]);
1095 if (ValueFormat
& 0x0020) record
->YPlaDevice
= GET_BE_WORD(data
[offset
++]);
1096 if (ValueFormat
& 0x0040) record
->XAdvDevice
= GET_BE_WORD(data
[offset
++]);
1097 if (ValueFormat
& 0x0080) record
->YAdvDevice
= GET_BE_WORD(data
[offset
++]);
1101 static VOID
GPOS_get_value_record_offsets(const BYTE
* head
, GPOS_ValueRecord
*ValueRecord
, WORD ValueFormat
, INT ppem
, LPPOINT ptPlacement
, LPPOINT ptAdvance
)
1103 if (ValueFormat
& 0x0001) ptPlacement
->x
+= (short)ValueRecord
->XPlacement
;
1104 if (ValueFormat
& 0x0002) ptPlacement
->y
+= (short)ValueRecord
->YPlacement
;
1105 if (ValueFormat
& 0x0004) ptAdvance
->x
+= (short)ValueRecord
->XAdvance
;
1106 if (ValueFormat
& 0x0008) ptAdvance
->y
+= (short)ValueRecord
->YAdvance
;
1107 if (ValueFormat
& 0x0010) ptPlacement
->x
+= GPOS_get_device_table_value((const OT_DeviceTable
*)(head
+ ValueRecord
->XPlaDevice
), ppem
);
1108 if (ValueFormat
& 0x0020) ptPlacement
->y
+= GPOS_get_device_table_value((const OT_DeviceTable
*)(head
+ ValueRecord
->YPlaDevice
), ppem
);
1109 if (ValueFormat
& 0x0040) ptAdvance
->x
+= GPOS_get_device_table_value((const OT_DeviceTable
*)(head
+ ValueRecord
->XAdvDevice
), ppem
);
1110 if (ValueFormat
& 0x0080) ptAdvance
->y
+= GPOS_get_device_table_value((const OT_DeviceTable
*)(head
+ ValueRecord
->YAdvDevice
), ppem
);
1111 if (ValueFormat
& 0xFF00) FIXME("Unhandled Value Format %x\n",ValueFormat
&0xFF00);
1114 static VOID
GPOS_apply_SingleAdjustment(const OT_LookupTable
*look
, const WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT glyph_count
, INT ppem
, LPPOINT ptAdjust
, LPPOINT ptAdvance
)
1118 TRACE("Single Adjustment Positioning Subtable\n");
1120 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
1122 const GPOS_SinglePosFormat1
*spf1
;
1123 WORD offset
= GET_BE_WORD(look
->SubTable
[j
]);
1124 spf1
= (const GPOS_SinglePosFormat1
*)((const BYTE
*)look
+offset
);
1125 if (GET_BE_WORD(spf1
->PosFormat
) == 1)
1127 offset
= GET_BE_WORD(spf1
->Coverage
);
1128 if (GSUB_is_glyph_covered((const BYTE
*)spf1
+offset
, glyphs
[glyph_index
]) != -1)
1130 GPOS_ValueRecord ValueRecord
= {0,0,0,0,0,0,0,0};
1131 WORD ValueFormat
= GET_BE_WORD(spf1
->ValueFormat
);
1132 GPOS_get_value_record(ValueFormat
, spf1
->Value
, &ValueRecord
);
1133 GPOS_get_value_record_offsets((const BYTE
*)spf1
, &ValueRecord
, ValueFormat
, ppem
, ptAdjust
, ptAdvance
);
1134 TRACE("Glyph Adjusted by %i,%i\n",ValueRecord
.XPlacement
,ValueRecord
.YPlacement
);
1137 else if (GET_BE_WORD(spf1
->PosFormat
) == 2)
1140 const GPOS_SinglePosFormat2
*spf2
;
1141 spf2
= (const GPOS_SinglePosFormat2
*)spf1
;
1142 offset
= GET_BE_WORD(spf2
->Coverage
);
1143 index
= GSUB_is_glyph_covered((const BYTE
*)spf2
+offset
, glyphs
[glyph_index
]);
1147 GPOS_ValueRecord ValueRecord
= {0,0,0,0,0,0,0,0};
1148 WORD ValueFormat
= GET_BE_WORD(spf2
->ValueFormat
);
1149 size
= GPOS_get_value_record(ValueFormat
, spf2
->Value
, &ValueRecord
);
1152 offset
= size
* index
;
1153 GPOS_get_value_record(ValueFormat
, &spf2
->Value
[offset
], &ValueRecord
);
1155 GPOS_get_value_record_offsets((const BYTE
*)spf2
, &ValueRecord
, ValueFormat
, ppem
, ptAdjust
, ptAdvance
);
1156 TRACE("Glyph Adjusted by %i,%i\n",ValueRecord
.XPlacement
,ValueRecord
.YPlacement
);
1160 FIXME("Single Adjustment Positioning: Format %i Unhandled\n",GET_BE_WORD(spf1
->PosFormat
));
1164 static INT
GPOS_apply_PairAdjustment(const OT_LookupTable
*look
, const WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT glyph_count
, INT ppem
, LPPOINT ptAdjust
, LPPOINT ptAdvance
)
1168 TRACE("Pair Adjustment Positioning Subtable\n");
1170 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
1172 const GPOS_PairPosFormat1
*ppf1
;
1173 WORD offset
= GET_BE_WORD(look
->SubTable
[j
]);
1174 ppf1
= (const GPOS_PairPosFormat1
*)((const BYTE
*)look
+offset
);
1175 if (GET_BE_WORD(ppf1
->PosFormat
) == 1)
1177 offset
= GET_BE_WORD(ppf1
->Coverage
);
1178 if (GSUB_is_glyph_covered((const BYTE
*)ppf1
+offset
, glyphs
[glyph_index
]) != -1)
1181 int count
= GET_BE_WORD(ppf1
->PairSetCount
);
1182 for (i
= 0; i
< count
; i
++)
1186 const GPOS_PairSet
*ps
;
1187 offset
= GET_BE_WORD(ppf1
->PairSetOffset
[i
]);
1188 ps
= (const GPOS_PairSet
*)((const BYTE
*)ppf1
+offset
);
1189 pair_count
= GET_BE_WORD(ps
->PairValueCount
);
1190 for (k
= 0; k
< pair_count
; k
++)
1192 if (glyphs
[glyph_index
+write_dir
] == GET_BE_WORD(ps
->PairValueRecord
[k
].SecondGlyph
))
1194 GPOS_ValueRecord ValueRecord1
= {0,0,0,0,0,0,0,0};
1195 GPOS_ValueRecord ValueRecord2
= {0,0,0,0,0,0,0,0};
1196 WORD ValueFormat1
= GET_BE_WORD(ppf1
->ValueFormat1
);
1197 WORD ValueFormat2
= GET_BE_WORD(ppf1
->ValueFormat2
);
1199 TRACE("Format 1: Found Pair %x,%x\n",glyphs
[glyph_index
],glyphs
[glyph_index
+write_dir
]);
1201 offset
= GPOS_get_value_record(ValueFormat1
, ps
->PairValueRecord
[k
].Value1
, &ValueRecord1
);
1202 GPOS_get_value_record(ValueFormat2
, (WORD
*)((const BYTE
*)(ps
->PairValueRecord
[k
].Value2
)+offset
), &ValueRecord2
);
1205 GPOS_get_value_record_offsets((const BYTE
*)ppf1
, &ValueRecord1
, ValueFormat1
, ppem
, &ptAdjust
[0], &ptAdvance
[0]);
1206 TRACE("Glyph 1 resulting cumulative offset is %i,%i design units\n",ptAdjust
[0].x
,ptAdjust
[0].y
);
1210 GPOS_get_value_record_offsets((const BYTE
*)ppf1
, &ValueRecord2
, ValueFormat2
, ppem
, &ptAdjust
[1], &ptAdvance
[1]);
1211 TRACE("Glyph 2 resulting cumulative offset is %i,%i design units\n",ptAdjust
[1].x
,ptAdjust
[1].y
);
1212 return glyph_index
+2;
1220 FIXME("Pair Adjustment Positioning: Format %i Unhandled\n",GET_BE_WORD(ppf1
->PosFormat
));
1222 return glyph_index
+1;
1225 static VOID
GPOS_apply_MarkToBase(const OT_LookupTable
*look
, const WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT glyph_count
, INT ppem
, LPPOINT pt
)
1229 TRACE("MarkToBase Attachment Positioning Subtable\n");
1231 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
1234 const GPOS_MarkBasePosFormat1
*mbpf1
;
1235 offset
= GET_BE_WORD(look
->SubTable
[j
]);
1236 mbpf1
= (const GPOS_MarkBasePosFormat1
*)((const BYTE
*)look
+offset
);
1237 if (GET_BE_WORD(mbpf1
->PosFormat
) == 1)
1239 int offset
= GET_BE_WORD(mbpf1
->MarkCoverage
);
1241 mark_index
= GSUB_is_glyph_covered((const BYTE
*)mbpf1
+offset
, glyphs
[glyph_index
]);
1242 if (mark_index
!= -1)
1245 offset
= GET_BE_WORD(mbpf1
->BaseCoverage
);
1246 base_index
= GSUB_is_glyph_covered((const BYTE
*)mbpf1
+offset
, glyphs
[glyph_index
- write_dir
]);
1247 if (base_index
!= -1)
1249 const GPOS_MarkArray
*ma
;
1250 const GPOS_MarkRecord
*mr
;
1251 const GPOS_BaseArray
*ba
;
1252 const GPOS_BaseRecord
*br
;
1254 int class_count
= GET_BE_WORD(mbpf1
->ClassCount
);
1255 int baserecord_size
;
1258 TRACE("Mark %x(%i) and base %x(%i)\n",glyphs
[glyph_index
], mark_index
, glyphs
[glyph_index
- write_dir
], base_index
);
1259 offset
= GET_BE_WORD(mbpf1
->MarkArray
);
1260 ma
= (const GPOS_MarkArray
*)((const BYTE
*)mbpf1
+ offset
);
1261 if (mark_index
> GET_BE_WORD(ma
->MarkCount
))
1263 ERR("Mark index exeeded mark count\n");
1266 mr
= &ma
->MarkRecord
[mark_index
];
1267 mark_class
= GET_BE_WORD(mr
->Class
);
1268 TRACE("Mark Class %i total classes %i\n",mark_class
,class_count
);
1269 offset
= GET_BE_WORD(mbpf1
->BaseArray
);
1270 ba
= (const GPOS_BaseArray
*)((const BYTE
*)mbpf1
+ offset
);
1271 baserecord_size
= class_count
* sizeof(WORD
);
1272 br
= (const GPOS_BaseRecord
*)((const BYTE
*)ba
+ sizeof(WORD
) + (baserecord_size
* base_index
));
1273 offset
= GET_BE_WORD(br
->BaseAnchor
[mark_class
]);
1274 GPOS_get_anchor_values((const BYTE
*)ba
+ offset
, &base_pt
, ppem
);
1275 offset
= GET_BE_WORD(mr
->MarkAnchor
);
1276 GPOS_get_anchor_values((const BYTE
*)ma
+ offset
, &mark_pt
, ppem
);
1277 TRACE("Offset on base is %i,%i design units\n",base_pt
.x
,base_pt
.y
);
1278 TRACE("Offset on mark is %i,%i design units\n",mark_pt
.x
, mark_pt
.y
);
1279 pt
->x
+= base_pt
.x
- mark_pt
.x
;
1280 pt
->y
+= base_pt
.y
- mark_pt
.y
;
1281 TRACE("Resulting cumulative offset is %i,%i design units\n",pt
->x
,pt
->y
);
1286 FIXME("Unhandled Mark To Base Format %i\n",GET_BE_WORD(mbpf1
->PosFormat
));
1290 static INT
GPOS_apply_ChainContextPos(LPOUTLINETEXTMETRICW lpotm
, LPLOGFONTW lplogfont
, INT
* piAdvance
, const OT_LookupList
*lookup
, const OT_LookupTable
*look
, const WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT glyph_count
, INT ppem
, GOFFSET
*pGoffset
)
1294 TRACE("Chaining Contextual Positioning Subtable\n");
1296 for (j
= 0; j
< GET_BE_WORD(look
->SubTableCount
); j
++)
1299 const GPOS_ChainContextPosFormat3_1
*ccpf3
;
1300 int dirLookahead
= write_dir
;
1301 int dirBacktrack
= -1 * write_dir
;
1303 offset
= GET_BE_WORD(look
->SubTable
[j
]);
1304 ccpf3
= (const GPOS_ChainContextPosFormat3_1
*)((const BYTE
*)look
+offset
);
1306 if (GET_BE_WORD(ccpf3
->PosFormat
) == 1)
1308 FIXME(" TODO: subtype 1 (Simple Chaining Context Glyph Positioning)\n");
1311 else if (GET_BE_WORD(ccpf3
->PosFormat
) == 2)
1313 FIXME(" TODO: subtype 2 (Class-based Chaining Context Glyph Positioning)\n");
1316 else if (GET_BE_WORD(ccpf3
->PosFormat
) == 3)
1320 const GPOS_ChainContextPosFormat3_2
*ccpf3_2
;
1321 const GPOS_ChainContextPosFormat3_3
*ccpf3_3
;
1322 const GPOS_ChainContextPosFormat3_4
*ccpf3_4
;
1324 TRACE(" subtype 3 (Coverage-based Chaining Context Glyph Positioning)\n");
1326 for (k
= 0; k
< GET_BE_WORD(ccpf3
->BacktrackGlyphCount
); k
++)
1328 offset
= GET_BE_WORD(ccpf3
->Coverage
[k
]);
1329 if (GSUB_is_glyph_covered((const BYTE
*)ccpf3
+offset
, glyphs
[glyph_index
+ (dirBacktrack
* (k
+1))]) == -1)
1332 if (k
!= GET_BE_WORD(ccpf3
->BacktrackGlyphCount
))
1334 TRACE("Matched Backtrack\n");
1336 ccpf3_2
= (const GPOS_ChainContextPosFormat3_2
*)(((LPBYTE
)ccpf3
)+sizeof(GPOS_ChainContextPosFormat3_1
) + (sizeof(WORD
) * (GET_BE_WORD(ccpf3
->BacktrackGlyphCount
)-1)));
1338 indexGlyphs
= GET_BE_WORD(ccpf3_2
->InputGlyphCount
);
1339 for (k
= 0; k
< indexGlyphs
; k
++)
1341 offset
= GET_BE_WORD(ccpf3_2
->Coverage
[k
]);
1342 if (GSUB_is_glyph_covered((const BYTE
*)ccpf3
+offset
, glyphs
[glyph_index
+ (write_dir
* k
)]) == -1)
1345 if (k
!= indexGlyphs
)
1347 TRACE("Matched IndexGlyphs\n");
1349 ccpf3_3
= (const GPOS_ChainContextPosFormat3_3
*)(((LPBYTE
)ccpf3_2
)+sizeof(GPOS_ChainContextPosFormat3_2
) + (sizeof(WORD
) * (GET_BE_WORD(ccpf3_2
->InputGlyphCount
)-1)));
1351 for (k
= 0; k
< GET_BE_WORD(ccpf3_3
->LookaheadGlyphCount
); k
++)
1353 offset
= GET_BE_WORD(ccpf3_3
->Coverage
[k
]);
1354 if (GSUB_is_glyph_covered((const BYTE
*)ccpf3
+offset
, glyphs
[glyph_index
+ (dirLookahead
* (indexGlyphs
+ k
))]) == -1)
1357 if (k
!= GET_BE_WORD(ccpf3_3
->LookaheadGlyphCount
))
1359 TRACE("Matched LookAhead\n");
1361 ccpf3_4
= (const GPOS_ChainContextPosFormat3_4
*)(((LPBYTE
)ccpf3_3
)+sizeof(GPOS_ChainContextPosFormat3_3
) + (sizeof(WORD
) * (GET_BE_WORD(ccpf3_3
->LookaheadGlyphCount
)-1)));
1363 if (GET_BE_WORD(ccpf3_4
->PosCount
))
1365 for (k
= 0; k
< GET_BE_WORD(ccpf3_4
->PosCount
); k
++)
1367 int lookupIndex
= GET_BE_WORD(ccpf3_4
->PosLookupRecord
[k
].LookupListIndex
);
1368 int SequenceIndex
= GET_BE_WORD(ccpf3_4
->PosLookupRecord
[k
].SequenceIndex
) * write_dir
;
1370 TRACE("Position: %i -> %i %i\n",k
, SequenceIndex
, lookupIndex
);
1371 GPOS_apply_lookup(lpotm
, lplogfont
, piAdvance
, lookup
, lookupIndex
, glyphs
, glyph_index
+ SequenceIndex
, write_dir
, glyph_count
, pGoffset
);
1373 return glyph_index
+ indexGlyphs
+ GET_BE_WORD(ccpf3_3
->LookaheadGlyphCount
);
1375 else return glyph_index
+ 1;
1378 FIXME("Unhandled Chaining Contextual Positioning Format %i\n",GET_BE_WORD(ccpf3
->PosFormat
));
1380 return glyph_index
+ 1;
1383 static INT
GPOS_apply_lookup(LPOUTLINETEXTMETRICW lpotm
, LPLOGFONTW lplogfont
, INT
* piAdvance
, const OT_LookupList
* lookup
, INT lookup_index
, const WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT glyph_count
, GOFFSET
*pGoffset
)
1386 const OT_LookupTable
*look
;
1387 int ppem
= lpotm
->otmTextMetrics
.tmAscent
+ lpotm
->otmTextMetrics
.tmDescent
- lpotm
->otmTextMetrics
.tmInternalLeading
;
1389 offset
= GET_BE_WORD(lookup
->Lookup
[lookup_index
]);
1390 look
= (const OT_LookupTable
*)((const BYTE
*)lookup
+ offset
);
1391 TRACE("type %i, flag %x, subtables %i\n",GET_BE_WORD(look
->LookupType
),GET_BE_WORD(look
->LookupFlag
),GET_BE_WORD(look
->SubTableCount
));
1392 switch(GET_BE_WORD(look
->LookupType
))
1397 POINT adjust
= {0,0};
1398 POINT advance
= {0,0};
1399 GPOS_apply_SingleAdjustment(look
, glyphs
, glyph_index
, write_dir
, glyph_count
, ppem
, &adjust
, &advance
);
1400 if (adjust
.x
|| adjust
.y
)
1402 GPOS_convert_design_units_to_device(lpotm
, lplogfont
, adjust
.x
, adjust
.y
, &devX
, &devY
);
1403 pGoffset
[glyph_index
].du
+= (int)(devX
+0.5);
1404 pGoffset
[glyph_index
].dv
+= (int)(devY
+0.5);
1406 if (advance
.x
|| advance
.y
)
1408 GPOS_convert_design_units_to_device(lpotm
, lplogfont
, advance
.x
, advance
.y
, &devX
, &devY
);
1409 piAdvance
[glyph_index
] += (int)(devX
+0.5);
1411 FIXME("Unhandled adjustment to Y advancement\n");
1416 POINT advance
[2]= {{0,0},{0,0}};
1417 POINT adjust
[2]= {{0,0},{0,0}};
1420 index
= GPOS_apply_PairAdjustment(look
, glyphs
, glyph_index
, write_dir
, glyph_count
, ppem
, adjust
, advance
);
1421 if (adjust
[0].x
|| adjust
[0].y
)
1423 GPOS_convert_design_units_to_device(lpotm
, lplogfont
, adjust
[0].x
, adjust
[0].y
, &devX
, &devY
);
1424 pGoffset
[glyph_index
].du
+= (int)(devX
+0.5);
1425 pGoffset
[glyph_index
].dv
+= (int)(devY
+0.5);
1427 if (advance
[0].x
|| advance
[0].y
)
1429 GPOS_convert_design_units_to_device(lpotm
, lplogfont
, advance
[0].x
, advance
[0].y
, &devX
, &devY
);
1430 piAdvance
[glyph_index
] += (int)(devX
+0.5);
1432 if (adjust
[1].x
|| adjust
[1].y
)
1434 GPOS_convert_design_units_to_device(lpotm
, lplogfont
, adjust
[1].x
, adjust
[1].y
, &devX
, &devY
);
1435 pGoffset
[glyph_index
+ write_dir
].du
+= (int)(devX
+0.5);
1436 pGoffset
[glyph_index
+ write_dir
].dv
+= (int)(devY
+0.5);
1438 if (advance
[1].x
|| advance
[1].y
)
1440 GPOS_convert_design_units_to_device(lpotm
, lplogfont
, advance
[1].x
, advance
[1].y
, &devX
, &devY
);
1441 piAdvance
[glyph_index
+ write_dir
] += (int)(devX
+0.5);
1449 GPOS_apply_MarkToBase(look
, glyphs
, glyph_index
, write_dir
, glyph_count
, ppem
, &desU
);
1450 if (desU
.x
|| desU
.y
)
1452 GPOS_convert_design_units_to_device(lpotm
, lplogfont
, desU
.x
, desU
.y
, &devX
, &devY
);
1453 pGoffset
[glyph_index
].du
+= ((int)(devX
+0.5) - piAdvance
[glyph_index
-1]);
1454 pGoffset
[glyph_index
].dv
+= (int)(devY
+0.5);
1460 return GPOS_apply_ChainContextPos(lpotm
, lplogfont
, piAdvance
, lookup
, look
, glyphs
, glyph_index
, write_dir
, glyph_count
, ppem
, pGoffset
);
1463 FIXME("We do not handle SubType %i\n",GET_BE_WORD(look
->LookupType
));
1465 return glyph_index
+1;
1468 INT
OpenType_apply_GPOS_lookup(LPOUTLINETEXTMETRICW lpotm
, LPLOGFONTW lplogfont
, INT
* piAdvance
, LPCVOID table
, INT lookup_index
, const WORD
*glyphs
, INT glyph_index
, INT write_dir
, INT glyph_count
, GOFFSET
*pGoffset
)
1470 const GPOS_Header
*header
= (const GPOS_Header
*)table
;
1471 const OT_LookupList
*lookup
= (const OT_LookupList
*)((const BYTE
*)header
+ GET_BE_WORD(header
->LookupList
));
1473 return GPOS_apply_lookup(lpotm
, lplogfont
, piAdvance
, lookup
, lookup_index
, glyphs
, glyph_index
, write_dir
, glyph_count
, pGoffset
);
1476 static void GSUB_initialize_script_cache(ScriptCache
*psc
)
1480 if (psc
->GSUB_Table
)
1482 const OT_ScriptList
*script
;
1483 const GSUB_Header
* header
= (const GSUB_Header
*)psc
->GSUB_Table
;
1484 script
= (const OT_ScriptList
*)((const BYTE
*)header
+ GET_BE_WORD(header
->ScriptList
));
1485 psc
->script_count
= GET_BE_WORD(script
->ScriptCount
);
1486 TRACE("initializing %i scripts in this font\n",psc
->script_count
);
1487 if (psc
->script_count
)
1489 psc
->scripts
= HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY
,sizeof(LoadedScript
) * psc
->script_count
);
1490 for (i
= 0; i
< psc
->script_count
; i
++)
1492 int offset
= GET_BE_WORD(script
->ScriptRecord
[i
].Script
);
1493 psc
->scripts
[i
].tag
= MS_MAKE_TAG(script
->ScriptRecord
[i
].ScriptTag
[0], script
->ScriptRecord
[i
].ScriptTag
[1], script
->ScriptRecord
[i
].ScriptTag
[2], script
->ScriptRecord
[i
].ScriptTag
[3]);
1494 psc
->scripts
[i
].gsub_table
= ((const BYTE
*)script
+ offset
);
1500 static void GPOS_expand_script_cache(ScriptCache
*psc
)
1503 const OT_ScriptList
*script
;
1504 const GPOS_Header
* header
= (const GPOS_Header
*)psc
->GPOS_Table
;
1509 script
= (const OT_ScriptList
*)((const BYTE
*)header
+ GET_BE_WORD(header
->ScriptList
));
1510 count
= GET_BE_WORD(script
->ScriptCount
);
1512 if (!psc
->script_count
)
1514 psc
->script_count
= count
;
1515 TRACE("initializing %i scripts in this font\n",psc
->script_count
);
1516 if (psc
->script_count
)
1518 psc
->scripts
= HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY
,sizeof(LoadedScript
) * psc
->script_count
);
1519 for (i
= 0; i
< psc
->script_count
; i
++)
1521 int offset
= GET_BE_WORD(script
->ScriptRecord
[i
].Script
);
1522 psc
->scripts
[i
].tag
= MS_MAKE_TAG(script
->ScriptRecord
[i
].ScriptTag
[0], script
->ScriptRecord
[i
].ScriptTag
[1], script
->ScriptRecord
[i
].ScriptTag
[2], script
->ScriptRecord
[i
].ScriptTag
[3]);
1523 psc
->scripts
[i
].gpos_table
= ((const BYTE
*)script
+ offset
);
1529 for (i
= 0; i
< count
; i
++)
1532 int offset
= GET_BE_WORD(script
->ScriptRecord
[i
].Script
);
1533 OPENTYPE_TAG tag
= MS_MAKE_TAG(script
->ScriptRecord
[i
].ScriptTag
[0], script
->ScriptRecord
[i
].ScriptTag
[1], script
->ScriptRecord
[i
].ScriptTag
[2], script
->ScriptRecord
[i
].ScriptTag
[3]);
1534 for (j
= 0; j
< psc
->script_count
; j
++)
1536 if (psc
->scripts
[j
].tag
== tag
)
1538 psc
->scripts
[j
].gpos_table
= ((const BYTE
*)script
+ offset
);
1542 if (j
== psc
->script_count
)
1544 psc
->script_count
++;
1545 psc
->scripts
= HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY
,psc
->scripts
, sizeof(LoadedScript
) * psc
->script_count
);
1546 psc
->scripts
[j
].tag
= tag
;
1547 psc
->scripts
[j
].gpos_table
= ((const BYTE
*)script
+ offset
);
1553 static void _initialize_script_cache(ScriptCache
*psc
)
1555 if (!psc
->script_count
)
1557 GSUB_initialize_script_cache(psc
);
1558 GPOS_expand_script_cache(psc
);
1562 HRESULT
OpenType_GetFontScriptTags(ScriptCache
*psc
, OPENTYPE_TAG searchingFor
, int cMaxTags
, OPENTYPE_TAG
*pScriptTags
, int *pcTags
)
1567 _initialize_script_cache(psc
);
1569 *pcTags
= psc
->script_count
;
1571 if (!searchingFor
&& cMaxTags
< *pcTags
)
1573 else if (searchingFor
)
1574 rc
= USP_E_SCRIPT_NOT_IN_FONT
;
1576 for (i
= 0; i
< psc
->script_count
; i
++)
1579 pScriptTags
[i
] = psc
->scripts
[i
].tag
;
1583 if (searchingFor
== psc
->scripts
[i
].tag
)
1585 pScriptTags
[0] = psc
->scripts
[i
].tag
;
1595 static void GSUB_initialize_language_cache(LoadedScript
*script
)
1599 if (script
->gsub_table
)
1602 const OT_Script
* table
= script
->gsub_table
;
1603 script
->language_count
= GET_BE_WORD(table
->LangSysCount
);
1604 offset
= GET_BE_WORD(table
->DefaultLangSys
);
1607 script
->default_language
.tag
= MS_MAKE_TAG('d','f','l','t');
1608 script
->default_language
.gsub_table
= (const BYTE
*)table
+ offset
;
1611 if (script
->language_count
)
1613 TRACE("Deflang %p, LangCount %i\n",script
->default_language
.gsub_table
, script
->language_count
);
1615 script
->languages
= HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY
, sizeof(LoadedLanguage
) * script
->language_count
);
1617 for (i
= 0; i
< script
->language_count
; i
++)
1619 int offset
= GET_BE_WORD(table
->LangSysRecord
[i
].LangSys
);
1620 script
->languages
[i
].tag
= MS_MAKE_TAG(table
->LangSysRecord
[i
].LangSysTag
[0], table
->LangSysRecord
[i
].LangSysTag
[1], table
->LangSysRecord
[i
].LangSysTag
[2], table
->LangSysRecord
[i
].LangSysTag
[3]);
1621 script
->languages
[i
].gsub_table
= ((const BYTE
*)table
+ offset
);
1627 static void GPOS_expand_language_cache(LoadedScript
*script
)
1630 const OT_Script
* table
= script
->gpos_table
;
1636 offset
= GET_BE_WORD(table
->DefaultLangSys
);
1638 script
->default_language
.gpos_table
= (const BYTE
*)table
+ offset
;
1640 count
= GET_BE_WORD(table
->LangSysCount
);
1642 TRACE("Deflang %p, LangCount %i\n",script
->default_language
.gpos_table
, count
);
1643 if (!script
->language_count
)
1646 script
->language_count
= count
;
1648 script
->languages
= HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY
, sizeof(LoadedLanguage
) * script
->language_count
);
1650 for (i
= 0; i
< script
->language_count
; i
++)
1652 int offset
= GET_BE_WORD(table
->LangSysRecord
[i
].LangSys
);
1653 script
->languages
[i
].tag
= MS_MAKE_TAG(table
->LangSysRecord
[i
].LangSysTag
[0], table
->LangSysRecord
[i
].LangSysTag
[1], table
->LangSysRecord
[i
].LangSysTag
[2], table
->LangSysRecord
[i
].LangSysTag
[3]);
1654 script
->languages
[i
].gpos_table
= ((const BYTE
*)table
+ offset
);
1660 for (i
= 0; i
< count
; i
++)
1662 int offset
= GET_BE_WORD(table
->LangSysRecord
[i
].LangSys
);
1663 OPENTYPE_TAG tag
= MS_MAKE_TAG(table
->LangSysRecord
[i
].LangSysTag
[0], table
->LangSysRecord
[i
].LangSysTag
[1], table
->LangSysRecord
[i
].LangSysTag
[2], table
->LangSysRecord
[i
].LangSysTag
[3]);
1665 for (j
= 0; j
< script
->language_count
; j
++)
1667 if (script
->languages
[j
].tag
== tag
)
1669 script
->languages
[j
].gpos_table
= ((const BYTE
*)table
+ offset
);
1673 if (j
== script
->language_count
)
1675 script
->language_count
++;
1676 script
->languages
= HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY
,script
->languages
, sizeof(LoadedLanguage
) * script
->language_count
);
1677 script
->languages
[j
].tag
= tag
;
1678 script
->languages
[j
].gpos_table
= ((const BYTE
*)table
+ offset
);
1684 static void _initialize_language_cache(LoadedScript
*script
)
1686 if (!script
->language_count
)
1688 GSUB_initialize_language_cache(script
);
1689 GPOS_expand_language_cache(script
);
1693 HRESULT
OpenType_GetFontLanguageTags(ScriptCache
*psc
, OPENTYPE_TAG script_tag
, OPENTYPE_TAG searchingFor
, int cMaxTags
, OPENTYPE_TAG
*pLanguageTags
, int *pcTags
)
1697 LoadedScript
*script
= NULL
;
1699 _initialize_script_cache(psc
);
1701 for (i
= 0; i
< psc
->script_count
; i
++)
1703 if (psc
->scripts
[i
].tag
== script_tag
)
1705 script
= &psc
->scripts
[i
];
1711 return E_INVALIDARG
;
1713 _initialize_language_cache(script
);
1715 if (!searchingFor
&& cMaxTags
< script
->language_count
)
1717 else if (searchingFor
)
1720 *pcTags
= script
->language_count
;
1722 for (i
= 0; i
< script
->language_count
; i
++)
1725 pLanguageTags
[i
] = script
->languages
[i
].tag
;
1729 if (searchingFor
== script
->languages
[i
].tag
)
1731 pLanguageTags
[0] = script
->languages
[i
].tag
;
1739 if (script
->default_language
.gsub_table
)
1742 pLanguageTags
[i
] = script
->default_language
.tag
;
1744 if (searchingFor
&& FAILED(rc
))
1746 pLanguageTags
[0] = script
->default_language
.tag
;
1749 *pcTags
= (*pcTags
) + 1;
1756 static void GSUB_initialize_feature_cache(LPCVOID table
, LoadedLanguage
*language
)
1760 if (language
->gsub_table
)
1762 const OT_LangSys
*lang
= language
->gsub_table
;
1763 const GSUB_Header
*header
= (const GSUB_Header
*)table
;
1764 const OT_FeatureList
*feature_list
;
1766 language
->feature_count
= GET_BE_WORD(lang
->FeatureCount
);
1767 TRACE("%i features\n",language
->feature_count
);
1769 if (language
->feature_count
)
1771 language
->features
= HeapAlloc(GetProcessHeap(),0,sizeof(LoadedFeature
)*language
->feature_count
);
1773 feature_list
= (const OT_FeatureList
*)((const BYTE
*)header
+ GET_BE_WORD(header
->FeatureList
));
1775 for (i
= 0; i
< language
->feature_count
; i
++)
1777 const OT_Feature
*feature
;
1779 int index
= GET_BE_WORD(lang
->FeatureIndex
[i
]);
1781 language
->features
[i
].tag
= MS_MAKE_TAG(feature_list
->FeatureRecord
[index
].FeatureTag
[0], feature_list
->FeatureRecord
[index
].FeatureTag
[1], feature_list
->FeatureRecord
[index
].FeatureTag
[2], feature_list
->FeatureRecord
[index
].FeatureTag
[3]);
1782 language
->features
[i
].feature
= ((const BYTE
*)feature_list
+ GET_BE_WORD(feature_list
->FeatureRecord
[index
].Feature
));
1783 feature
= (const OT_Feature
*)language
->features
[i
].feature
;
1784 language
->features
[i
].lookup_count
= GET_BE_WORD(feature
->LookupCount
);
1785 language
->features
[i
].lookups
= HeapAlloc(GetProcessHeap(),0,sizeof(WORD
) * language
->features
[i
].lookup_count
);
1786 for (j
= 0; j
< language
->features
[i
].lookup_count
; j
++)
1787 language
->features
[i
].lookups
[j
] = GET_BE_WORD(feature
->LookupListIndex
[j
]);
1793 static void GPOS_expand_feature_cache(LPCVOID table
, LoadedLanguage
*language
)
1796 const OT_LangSys
*lang
= language
->gpos_table
;
1797 const GPOS_Header
*header
= (const GPOS_Header
*)table
;
1798 const OT_FeatureList
*feature_list
;
1803 count
= GET_BE_WORD(lang
->FeatureCount
);
1804 feature_list
= (const OT_FeatureList
*)((const BYTE
*)header
+ GET_BE_WORD(header
->FeatureList
));
1806 TRACE("%i features\n",count
);
1807 if (!language
->feature_count
)
1809 language
->feature_count
= count
;
1811 if (language
->feature_count
)
1813 language
->features
= HeapAlloc(GetProcessHeap(),0,sizeof(LoadedFeature
)*language
->feature_count
);
1815 for (i
= 0; i
< language
->feature_count
; i
++)
1817 const OT_Feature
*feature
;
1819 int index
= GET_BE_WORD(lang
->FeatureIndex
[i
]);
1821 language
->features
[i
].tag
= MS_MAKE_TAG(feature_list
->FeatureRecord
[index
].FeatureTag
[0], feature_list
->FeatureRecord
[index
].FeatureTag
[1], feature_list
->FeatureRecord
[index
].FeatureTag
[2], feature_list
->FeatureRecord
[index
].FeatureTag
[3]);
1822 language
->features
[i
].feature
= ((const BYTE
*)feature_list
+ GET_BE_WORD(feature_list
->FeatureRecord
[index
].Feature
));
1823 feature
= (const OT_Feature
*)language
->features
[i
].feature
;
1824 language
->features
[i
].lookup_count
= GET_BE_WORD(feature
->LookupCount
);
1825 language
->features
[i
].lookups
= HeapAlloc(GetProcessHeap(),0,sizeof(WORD
) * language
->features
[i
].lookup_count
);
1826 for (j
= 0; j
< language
->features
[i
].lookup_count
; j
++)
1827 language
->features
[i
].lookups
[j
] = GET_BE_WORD(feature
->LookupListIndex
[j
]);
1833 language
->features
= HeapReAlloc(GetProcessHeap(),0,language
->features
, sizeof(LoadedFeature
)*(language
->feature_count
+ count
));
1835 for (i
= 0; i
< count
; i
++)
1837 const OT_Feature
*feature
;
1839 int index
= GET_BE_WORD(lang
->FeatureIndex
[i
]);
1840 int idx
= language
->feature_count
+ i
;
1842 language
->features
[idx
].tag
= MS_MAKE_TAG(feature_list
->FeatureRecord
[index
].FeatureTag
[0], feature_list
->FeatureRecord
[index
].FeatureTag
[1], feature_list
->FeatureRecord
[index
].FeatureTag
[2], feature_list
->FeatureRecord
[index
].FeatureTag
[3]);
1843 language
->features
[idx
].feature
= ((const BYTE
*)feature_list
+ GET_BE_WORD(feature_list
->FeatureRecord
[index
].Feature
));
1844 feature
= (const OT_Feature
*)language
->features
[idx
].feature
;
1845 language
->features
[idx
].lookup_count
= GET_BE_WORD(feature
->LookupCount
);
1846 language
->features
[idx
].lookups
= HeapAlloc(GetProcessHeap(),0,sizeof(WORD
) * language
->features
[idx
].lookup_count
);
1847 for (j
= 0; j
< language
->features
[idx
].lookup_count
; j
++)
1848 language
->features
[idx
].lookups
[j
] = GET_BE_WORD(feature
->LookupListIndex
[j
]);
1850 language
->feature_count
+= count
;
1854 static void _initialize_feature_cache(ScriptCache
*psc
, LoadedLanguage
*language
)
1856 if (!language
->feature_count
)
1858 GSUB_initialize_feature_cache(psc
->GSUB_Table
, language
);
1859 GPOS_expand_feature_cache(psc
->GPOS_Table
, language
);
1863 HRESULT
OpenType_GetFontFeatureTags(ScriptCache
*psc
, OPENTYPE_TAG script_tag
, OPENTYPE_TAG language_tag
, BOOL filtered
, OPENTYPE_TAG searchingFor
, int cMaxTags
, OPENTYPE_TAG
*pFeatureTags
, int *pcTags
, LoadedFeature
** feature
)
1867 LoadedScript
*script
= NULL
;
1868 LoadedLanguage
*language
= NULL
;
1870 _initialize_script_cache(psc
);
1872 for (i
= 0; i
< psc
->script_count
; i
++)
1874 if (psc
->scripts
[i
].tag
== script_tag
)
1876 script
= &psc
->scripts
[i
];
1887 return E_INVALIDARG
;
1890 _initialize_language_cache(script
);
1892 if ((script
->default_language
.gsub_table
|| script
->default_language
.gpos_table
) && script
->default_language
.tag
== language_tag
)
1893 language
= &script
->default_language
;
1896 for (i
= 0; i
< script
->language_count
; i
++)
1898 if (script
->languages
[i
].tag
== language_tag
)
1900 language
= &script
->languages
[i
];
1912 _initialize_feature_cache(psc
, language
);
1914 *pcTags
= language
->feature_count
;
1916 if (!searchingFor
&& cMaxTags
< *pcTags
)
1918 else if (searchingFor
)
1921 for (i
= 0; i
< language
->feature_count
; i
++)
1924 pFeatureTags
[i
] = language
->features
[i
].tag
;
1928 if (searchingFor
== language
->features
[i
].tag
)
1930 pFeatureTags
[0] = language
->features
[i
].tag
;
1933 *feature
= &language
->features
[i
];