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1 /*

2 ******************************************************************************

3 *

5 * License & terms of use: http://www.unicode.org/copyright.html#License

6 *

7 ******************************************************************************

8 ****************************************************************************** *

9 *

12 *

13 ****************************************************************************** *

14 * file name: sfnt.h

15 *

16 * created on: ??/??/2001

17 * created by: Eric R. Mader

18 */

20 #ifndef __SFNT_H

21 #define __SFNT_H

23 #include "LETypes.h"

26 #ifndef ANY_NUMBER

27 #define ANY_NUMBER 1

28 #endif

30 struct DirectoryEntry

31 {

32 le_uint32 tag;

33 le_uint32 checksum;

34 le_uint32 offset;

35 le_uint32 length;

36 };

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 };

49 struct CMAPEncodingSubtableHeader

50 {

51 le_uint16 platformID;

52 le_uint16 platformSpecificID;

53 le_uint32 encodingOffset;

54 };

56 struct CMAPTable

57 {

58 le_uint16 version;

59 le_uint16 numberSubtables;

60 CMAPEncodingSubtableHeader encodingSubtableHeaders[ANY_NUMBER];

61 };

63 struct CMAPEncodingSubtable

64 {

65 le_uint16 format;

66 le_uint16 length;

67 le_uint16 language;

68 };

70 struct CMAPFormat0Encoding : CMAPEncodingSubtable

71 {

72 le_uint8 glyphIndexArray[256];

73 };

75 struct CMAPFormat2Subheader

76 {

77 le_uint16 firstCode;

78 le_uint16 entryCount;

79 le_int16 idDelta;

80 le_uint16 idRangeOffset;

81 };

83 struct CMAPFormat2Encoding : CMAPEncodingSubtable

84 {

85 le_uint16 subHeadKeys[256];

86 CMAPFormat2Subheader subheaders[ANY_NUMBER];

87 };

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 {

     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