1 /***************************************************************************

     2 *

     3 *   Copyright (C) 1998-2002, International Business Machines

     4 *   Corporation and others.  All Rights Reserved.

     5 *

     6 ************************************************************************/

     7 

     8 #ifndef __SFNT_H

     9 #define __SFNT_H

    10 

    11 #include "LETypes.h"

    12 

    13 

    14 #ifndef ANY_NUMBER

    15 #define ANY_NUMBER 1

    16 #endif

    17 

    18 struct DirectoryEntry

    19 {

    20     le_uint32   tag;

    21     le_uint32   checksum;

    22     le_uint32   offset;

    23     le_uint32   length;

    24 };

    25 

    26 struct SFNTDirectory

    27 {

    28     le_uint32       scalerType;

    29     le_uint16       numTables;

    30     le_uint16       searchRange;

    31     le_uint16       entrySelector;

    32     le_uint16       rangeShift;

    33     DirectoryEntry  tableDirectory[ANY_NUMBER];

    34 };

    35 

    36 

    37 struct CMAPEncodingSubtableHeader

    38 {

    39     le_uint16   platformID;

    40     le_uint16   platformSpecificID;

    41     le_uint32   encodingOffset;

    42 };

    43 

    44 struct CMAPTable

    45 {

    46     le_uint16   version;

    47     le_uint16   numberSubtables;

    48     CMAPEncodingSubtableHeader encodingSubtableHeaders[ANY_NUMBER];

    49 };

    50 

    51 struct CMAPEncodingSubtable

    52 {

    53     le_uint16   format;

    54     le_uint16   length;

    55     le_uint16   language;

    56 };

    57 

    58 struct CMAPFormat0Encoding : CMAPEncodingSubtable

    59 {

    60     le_uint8    glyphIndexArray[256];

    61 };

    62 

    63 struct CMAPFormat2Subheader

    64 {

    65     le_uint16   firstCode;

    66     le_uint16   entryCount;

    67     le_int16    idDelta;

    68     le_uint16   idRangeOffset;

    69 };

    70 

    71 struct CMAPFormat2Encoding : CMAPEncodingSubtable

    72 {

    73     le_uint16  subHeadKeys[256];

    74     CMAPFormat2Subheader subheaders[ANY_NUMBER];

    75 };

    76 

    77 struct CMAPFormat4Encoding : CMAPEncodingSubtable

    78 {

    79     le_uint16   segCountX2;

    80     le_uint16   searchRange;

    81     le_uint16   entrySelector;

    82     le_uint16   rangeShift;

    83     le_uint16   endCodes[ANY_NUMBER];

    84 //  le_uint16   reservedPad;

    85 //  le_uint16   startCodes[ANY_NUMBER];

    86 //  le_uint16   idDelta[ANY_NUMBER];

    87 //  le_uint16   idRangeOffset[ANY_NUMBER];

    88 //  le_uint16   glyphIndexArray[ANY_NUMBER];

    89 };

    90 

    91 struct CMAPFormat6Encoding : CMAPEncodingSubtable

    92 {

    93     le_uint16   firstCode;

    94     le_uint16   entryCount;

    95     le_uint16   glyphIndexArray[ANY_NUMBER];

    96 };

    97 

    98 struct CMAPEncodingSubtable32

    99 {

   100     le_uint32   format;

   101     le_uint32   length;

   102     le_uint32   language;

   103 };

   104 

   105 struct CMAPGroup

   106 {

   107     le_uint32   startCharCode;

   108     le_uint32   endCharCode;

   109     le_uint32   startGlyphCode;

   110 };

   111 

   112 struct CMAPFormat8Encoding : CMAPEncodingSubtable32

   113 {

   114     le_uint32   is32[65536/32];

   115     le_uint32   nGroups;

   116     CMAPGroup   groups[ANY_NUMBER];

   117 };

   118 

   119 struct CMAPFormat10Encoding : CMAPEncodingSubtable32

   120 {

   121     le_uint32   startCharCode;

   122     le_uint32   numCharCodes;

   123     le_uint16   glyphs[ANY_NUMBER];

   124 };

   125 

   126 struct CMAPFormat12Encoding : CMAPEncodingSubtable32

   127 {

   128     le_uint32   nGroups;

   129     CMAPGroup   groups[ANY_NUMBER];

   130 };

   131 

   132 typedef le_int32 fixed;

   133 

   134 struct BigDate

   135 {

   136     le_uint32   bc;

   137     le_uint32   ad;

   138 };

   139 

   140 struct HEADTable

   141 {

   142     fixed       version;

   143     fixed       fontRevision;

   144     le_uint32   checksumAdjustment;

   145     le_uint32   magicNumber;

   146     le_uint16   flags;

   147     le_uint16   unitsPerEm;

   148     BigDate     created;

   149     BigDate     modified;

   150     le_int16    xMin;

   151     le_int16    yMin;

   152     le_int16    xMax;

   153     le_int16    yMax;

   154     le_int16    lowestRecPPEM;

   155     le_int16    fontDirectionHint;

   156     le_int16    indexToLocFormat;

   157     le_int16    glyphDataFormat;

   158 };

   159 

   160 struct MAXPTable

   161 {

   162     fixed       version;

   163     le_uint16   numGlyphs;

   164     le_uint16   maxPoints;

   165     le_uint16   maxContours;

   166     le_uint16   maxComponentPoints;

   167     le_uint16   maxComponentContours;

   168     le_uint16   maxZones;

   169     le_uint16   maxTwilightPoints;

   170     le_uint16   maxStorage;

   171     le_uint16   maxFunctionDefs;

   172     le_uint16   maxInstructionDefs;

   173     le_uint16   maxStackElements;

   174     le_uint16   maxSizeOfInstructions;

   175     le_uint16   maxComponentElements;

   176     le_uint16   maxComponentDepth;

   177 };

   178 

   179 struct HHEATable

   180 {

   181     fixed       version;

   182     le_int16    ascent;

   183     le_int16    descent;

   184     le_int16    lineGap;

   185     le_uint16   advanceWidthMax;

   186     le_int16    minLeftSideBearing;

   187     le_int16    minRightSideBearing;

   188     le_int16    xMaxExtent;

   189     le_int16    caretSlopeRise;

   190     le_int16    caretSlopeRun;

   191     le_int16    caretOffset;

   192     le_int16    reserved1;

   193     le_int16    reserved2;

   194     le_int16    reserved3;

   195     le_int16    reserved4;

   196     le_int16    metricDataFormat;

   197     le_uint16   numOfLongHorMetrics;

   198 };

   199 

   200 struct LongHorMetric

   201 {

   202     le_uint16   advanceWidth;

   203     le_int16    leftSideBearing;

   204 };

   205 

   206 struct HMTXTable

   207 {

   208     LongHorMetric hMetrics[ANY_NUMBER];        // ANY_NUMBER = numOfLongHorMetrics from hhea table

   209 //  le_int16        leftSideBearing[ANY_NUMBER]; // ANY_NUMBER = numGlyphs - numOfLongHorMetrics

   210 };

   211 

   212 #endif

   213