147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
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#ifndef TTGSUBTable_H
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#define TTGSUBTable_H
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#include <stdint.h>
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#include <ft2build.h>
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#include FT_OPENTYPE_VALIDATE_H
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typedef struct
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{
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uint32_t Version;
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uint16_t ScriptList;
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uint16_t FeatureList;
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uint16_t LookupList;
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} tt_gsub_header;
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typedef struct
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{
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uint16_t LookupOrder;
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uint16_t ReqFeatureIndex;
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uint16_t FeatureCount;
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uint16_t *FeatureIndex;
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} TLangSys;
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typedef struct
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{
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uint32_t LangSysTag;
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TLangSys LangSys;
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} TLangSysRecord;
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typedef struct
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{
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uint16_t DefaultLangSys;
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uint16_t LangSysCount;
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TLangSysRecord *LangSysRecord;
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} TScript;
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typedef struct
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{
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uint32_t ScriptTag;
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TScript Script;
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} TScriptRecord;
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typedef struct
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{
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uint16_t ScriptCount;
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TScriptRecord *ScriptRecord;
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} TScriptList;
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typedef struct
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{
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uint16_t FeatureParams;
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int LookupCount;
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uint16_t *LookupListIndex;
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} TFeature;
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typedef struct
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{
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uint32_t FeatureTag;
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TFeature Feature;
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} TFeatureRecord;
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typedef struct
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{
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int FeatureCount;
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TFeatureRecord *FeatureRecord;
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} TFeatureList;
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typedef struct
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{
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uint16_t Start;
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uint16_t End;
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uint16_t StartCoverageIndex;
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} TRangeRecord;
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typedef struct
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{
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uint16_t CoverageFormat;
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uint16_t GlyphCount;
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uint16_t *GlyphArray;
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uint16_t RangeCount;
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TRangeRecord *RangeRecord;
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} TCoverageFormat;
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typedef struct
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{
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uint16_t SubstFormat;
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TCoverageFormat Coverage;
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int16_t DeltaGlyphID;
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uint16_t GlyphCount;
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uint16_t *Substitute;
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} TSingleSubstFormat;
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typedef struct
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{
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uint16_t LookupType;
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uint16_t LookupFlag;
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uint16_t SubTableCount;
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TSingleSubstFormat *SubTable;
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} TLookup;
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typedef struct
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{
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int LookupCount;
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TLookup *Lookup;
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} TLookupList;
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typedef struct
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{
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int loaded;
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tt_gsub_header header;
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TScriptList ScriptList;
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TFeatureList FeatureList;
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TLookupList LookupList;
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} TTGSUBTable;
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void LoadGSUBTable(TTGSUBTable *table, FT_Face face);
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int LoadGSUBTable2(TTGSUBTable *table, FT_Bytes gsub);
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int GetVerticalGlyph(TTGSUBTable *table, uint32_t glyphnum, uint32_t *vglyphnum);
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int Parse(TTGSUBTable *table, FT_Bytes scriptlist, FT_Bytes featurelist, FT_Bytes lookuplist);
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void ParseScriptList(TTGSUBTable *table, FT_Bytes raw, TScriptList *rec);
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void ParseScript(TTGSUBTable *table, FT_Bytes raw, TScript *rec);
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void ParseLangSys(TTGSUBTable *table, FT_Bytes raw, TLangSys *rec);
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void ParseFeatureList(TTGSUBTable *table, FT_Bytes raw, TFeatureList *rec);
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void ParseFeature(TTGSUBTable *table, FT_Bytes raw, TFeature *rec);
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void ParseLookupList(TTGSUBTable *table, FT_Bytes raw, TLookupList *rec);
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void ParseLookup(TTGSUBTable *table, FT_Bytes raw, TLookup *rec);
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void ParseCoverage(TTGSUBTable *table, FT_Bytes raw, TCoverageFormat *rec);
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void ParseCoverageFormat1(TTGSUBTable *table, FT_Bytes raw, TCoverageFormat *rec);
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void ParseCoverageFormat2(TTGSUBTable *table, FT_Bytes raw, TCoverageFormat *rec);
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void ParseSingleSubst(TTGSUBTable *table, FT_Bytes raw, TSingleSubstFormat *rec);
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void ParseSingleSubstFormat1(TTGSUBTable *table, FT_Bytes raw, TSingleSubstFormat *rec);
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void ParseSingleSubstFormat2(TTGSUBTable *table, FT_Bytes raw, TSingleSubstFormat *rec);
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int GetVerticalGlyphSub(TTGSUBTable *table, uint32_t glyphnum, uint32_t *vglyphnum, TFeature *Feature);
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int GetVerticalGlyphSub2(TTGSUBTable *table, uint32_t glyphnum, uint32_t *vglyphnum, TLookup *Lookup);
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int GetCoverageIndex(TTGSUBTable *table, TCoverageFormat *Coverage, uint32_t g);
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void init_gsubtable(TTGSUBTable *table);
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void free_gsubtable(TTGSUBTable *table);
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#endif
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