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