icuSources/samples/layout/sfnt.h

   1 /*
   2  ******************************************************************************
   3  *
   4  *   © 2016 and later: Unicode, Inc. and others.
   5  *   License & terms of use: http://www.unicode.org/copyright.html#License
   6  *
   7  ******************************************************************************
   8  ****************************************************************************** *
   9  *
  10  *   Copyright (C) 1999-2001, International Business Machines
  11  *   Corporation and others.  All Rights Reserved.
  12  *
  13  ****************************************************************************** *
  14  *   file name:  sfnt.h
  15  *
  16  *   created on: ??/??/2001
  17  *   created by: Eric R. Mader
  18  */
  19
  20 #ifndef __SFNT_H
  21 #define __SFNT_H
  22
  23 #include "LETypes.h"
  24
  25
  26 #ifndef ANY_NUMBER
  27 #define ANY_NUMBER 1
  28 #endif
  29
  30 struct DirectoryEntry
  31 {
  32     le_uint32   tag;
  33     le_uint32   checksum;
  34     le_uint32   offset;
  35     le_uint32   length;
  36 };
  37
  38 struct SFNTDirectory
  39 {
  40     le_uint32       scalerType;
  41     le_uint16       numTables;
  42     le_uint16       searchRange;
  43     le_uint16       entrySelector;
  44     le_uint16       rangeShift;
  45     DirectoryEntry  tableDirectory[ANY_NUMBER];
  46 };
  47
  48
  49 struct CMAPEncodingSubtableHeader
  50 {
  51     le_uint16   platformID;
  52     le_uint16   platformSpecificID;
  53     le_uint32   encodingOffset;
  54 };
  55
  56 struct CMAPTable
  57 {
  58     le_uint16   version;
  59     le_uint16   numberSubtables;
  60     CMAPEncodingSubtableHeader encodingSubtableHeaders[ANY_NUMBER];
  61 };
  62
  63 struct CMAPEncodingSubtable
  64 {
  65     le_uint16   format;
  66     le_uint16   length;
  67     le_uint16   language;
  68 };
  69
  70 struct CMAPFormat0Encoding : CMAPEncodingSubtable
  71 {
  72     le_uint8    glyphIndexArray[256];
  73 };
  74
  75 struct CMAPFormat2Subheader
  76 {
  77     le_uint16   firstCode;
  78     le_uint16   entryCount;
  79     le_int16    idDelta;
  80     le_uint16   idRangeOffset;
  81 };
  82
  83 struct CMAPFormat2Encoding : CMAPEncodingSubtable
  84 {
  85     le_uint16  subHeadKeys[256];
  86     CMAPFormat2Subheader subheaders[ANY_NUMBER];
  87 };
  88
  89 struct CMAPFormat4Encoding : CMAPEncodingSubtable
  90 {
  91     le_uint16   segCountX2;
  92     le_uint16   searchRange;
  93     le_uint16   entrySelector;
  94     le_uint16   rangeShift;
  95     le_uint16   endCodes[ANY_NUMBER];
  96 //  le_uint16   reservedPad;
  97 //  le_uint16   startCodes[ANY_NUMBER];
  98 //  le_uint16   idDelta[ANY_NUMBER];
  99 //  le_uint16   idRangeOffset[ANY_NUMBER];
 100 //  le_uint16   glyphIndexArray[ANY_NUMBER];
 101 };
 102
 103 struct CMAPFormat6Encoding : CMAPEncodingSubtable
 104 {
 105     le_uint16   firstCode;
 106     le_uint16   entryCount;
 107     le_uint16   glyphIndexArray[ANY_NUMBER];
 108 };
 109
 110 struct CMAPEncodingSubtable32
 111 {
 112     le_uint32   format;
 113     le_uint32   length;
 114     le_uint32   language;
 115 };
 116
 117 struct CMAPGroup
 118 {
 119     le_uint32   startCharCode;
 120     le_uint32   endCharCode;
 121     le_uint32   startGlyphCode;
 122 };
 123
 124 struct CMAPFormat8Encoding : CMAPEncodingSubtable32
 125 {
 126     le_uint32   is32[65536/32];
 127     le_uint32   nGroups;
 128     CMAPGroup   groups[ANY_NUMBER];
 129 };
 130
 131 struct CMAPFormat10Encoding : CMAPEncodingSubtable32
 132 {
 133     le_uint32   startCharCode;
 134     le_uint32   numCharCodes;
 135     le_uint16   glyphs[ANY_NUMBER];
 136 };
 137
 138 struct CMAPFormat12Encoding : CMAPEncodingSubtable32
 139 {
 140     le_uint32   nGroups;
 141     CMAPGroup   groups[ANY_NUMBER];
 142 };
 143
 144 typedef le_int32 fixed;
 145
 146 struct BigDate
 147 {
 148     le_uint32   bc;
 149     le_uint32   ad;
 150 };
 151
 152 struct HEADTable
 153 {
 154     fixed       version;
 155     fixed       fontRevision;
 156     le_uint32   checksumAdjustment;
 157     le_uint32   magicNumber;
 158     le_uint16   flags;
 159     le_uint16   unitsPerEm;
 160     BigDate     created;
 161     BigDate     modified;
 162     le_int16    xMin;
 163     le_int16    yMin;
 164     le_int16    xMax;
 165     le_int16    yMax;
 166     le_int16    lowestRecPPEM;
 167     le_int16    fontDirectionHint;
 168     le_int16    indexToLocFormat;
 169     le_int16    glyphDataFormat;
 170 };
 171
 172 struct MAXPTable
 173 {
 174     fixed       version;
 175     le_uint16   numGlyphs;
 176     le_uint16   maxPoints;
 177     le_uint16   maxContours;
 178     le_uint16   maxComponentPoints;
 179     le_uint16   maxComponentContours;
 180     le_uint16   maxZones;
 181     le_uint16   maxTwilightPoints;
 182     le_uint16   maxStorage;
 183     le_uint16   maxFunctionDefs;
 184     le_uint16   maxInstructionDefs;
 185     le_uint16   maxStackElements;
 186     le_uint16   maxSizeOfInstructions;
 187     le_uint16   maxComponentElements;
 188     le_uint16   maxComponentDepth;
 189 };
 190
 191 struct HHEATable
 192 {
 193     fixed       version;
 194     le_int16    ascent;
 195     le_int16    descent;
 196     le_int16    lineGap;
 197     le_uint16   advanceWidthMax;
 198     le_int16    minLeftSideBearing;
 199     le_int16    minRightSideBearing;
 200     le_int16    xMaxExtent;
 201     le_int16    caretSlopeRise;
 202     le_int16    caretSlopeRun;
 203     le_int16    caretOffset;
 204     le_int16    reserved1;
 205     le_int16    reserved2;
 206     le_int16    reserved3;
 207     le_int16    reserved4;
 208     le_int16    metricDataFormat;
 209     le_uint16   numOfLongHorMetrics;
 210 };
 211
 212 struct LongHorMetric
 213 {
 214     le_uint16   advanceWidth;
 215     le_int16    leftSideBearing;
 216 };
 217
 218 struct HMTXTable
 219 {
 220     LongHorMetric hMetrics[ANY_NUMBER];        // ANY_NUMBER = numOfLongHorMetrics from hhea table
 221 //  le_int16      leftSideBearing[ANY_NUMBER]; // ANY_NUMBER = numGlyphs - numOfLongHorMetrics
 222 };
 223
 224 #endif
 225