94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
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#define tag_cmap 0x70616d63 // 'cmap'
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#define tag_gasp 0x70736167 // 'gasp'
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#define tag_head 0x64616568 // 'head'
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#define tag_hdmx 0x786d6468 // 'hdmx'
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#define tag_hhea 0x61656868 // 'hhea'
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#define tag_hmtx 0x78746d68 // 'hmtx'
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#define tag_kern 0x6e72656b // 'kern'
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#define tag_LTSH 0x4853544c // 'LTSH'
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#define tag_maxp 0x7078616d // 'maxp'
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#define tag_name 0x656d616e // 'name'
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#define tag_OS2 0x322f534f // 'OS/2'
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#define tag_post 0x74736f70 // 'post'
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#define tag_VDMX 0x584d4456 // 'VDMX'
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typedef signed char int8;
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typedef unsigned char uint8;
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typedef short int16;
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typedef unsigned short uint16;
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typedef long int32;
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typedef unsigned long uint32;
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typedef short FUnit;
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typedef unsigned short uFUnit;
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typedef long Fixed;
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typedef long Fract;
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#define FS_2BYTE(p) ( ((unsigned short)((p)[0]) << 8) | (p)[1])
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#define FS_4BYTE(p) ( FS_2BYTE((p)+2) | ( (FS_2BYTE(p)+0L) << 16) )
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#define SWAPW(a) ((int16) FS_2BYTE( (unsigned char *)(&a) ))
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#define SWAPL(a) ((int32) FS_4BYTE( (unsigned char *)(&a) ))
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typedef struct {
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uint32 bc;
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uint32 ad;
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} BigDate;
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typedef uint32 sfnt_TableTag;
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typedef struct {
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sfnt_TableTag tag;
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uint32 checkSum;
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uint32 offset;
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uint32 length;
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} sfnt_DirectoryEntry, *sfnt_DirectoryEntryPtr;
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typedef struct {
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int32 version; // 0x10000 (1.0)
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uint16 numOffsets; // number of tables
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uint16 searchRange; // (max2 <= numOffsets)*16
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uint16 entrySelector; // log2 (max2 <= numOffsets)
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uint16 rangeShift; // numOffsets*16-searchRange
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sfnt_DirectoryEntry table[1]; // table[numOffsets]
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} sfnt_OffsetTable, *sfnt_OffsetTablePtr;
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#define SFNT_MAGIC 0x5F0F3CF5
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typedef struct {
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Fixed version; // for this table, set to 1.0
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Fixed fontRevision; // For Font Manufacturer
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uint32 checkSumAdjustment;
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uint32 magicNumber; // signature, should always be 0x5F0F3CF5 == MAGIC
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uint16 flags;
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uint16 unitsPerEm; // Specifies how many in Font Units we have per EM
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BigDate created;
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BigDate modified;
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FUnit xMin;
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FUnit yMin;
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FUnit xMax;
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FUnit yMax;
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uint16 macStyle; // macintosh style word
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uint16 lowestRecPPEM; // lowest recommended pixels per Em
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int16 fontDirectionHint;
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int16 indexToLocFormat;
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int16 glyphDataFormat;
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} sfnt_FontHeader, *sfnt_FontHeaderPtr;
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