icuSources/layout/LETypes.h

   1 /*
   2  *
   3  * (C) Copyright IBM Corp. 1998-2011 - All Rights Reserved
   4  *
   5  */
   6
   7 #ifndef __LETYPES_H
   8 #define __LETYPES_H
   9
  10 #if !defined(LE_USE_CMEMORY) && (defined(U_LAYOUT_IMPLEMENTATION) || defined(U_LAYOUTEX_IMPLEMENTATION) || defined(U_STATIC_IMPLEMENTATION) || defined(U_COMBINED_IMPLEMENTATION))
  11 #define LE_USE_CMEMORY
  12 #endif
  13
  14 #include "unicode/utypes.h"
  15
  16 #ifdef __cplusplus
  17 #include "unicode/uobject.h"
  18 #endif
  19
  20 #ifdef LE_USE_CMEMORY
  21 #include "cmemory.h"
  22 #endif
  23
  24 /*!
  25  * \file
  26  * \brief C API: Basic definitions for the ICU LayoutEngine
  27  */
  28
  29 /**
  30  * A type used for signed, 32-bit integers.
  31  *
  32  * @stable ICU 2.4
  33  */
  34 typedef int32_t le_int32;
  35
  36 /**
  37  * A type used for unsigned, 32-bit integers.
  38  *
  39  * @stable ICU 2.4
  40  */
  41 typedef uint32_t le_uint32;
  42
  43 /**
  44  * A type used for signed, 16-bit integers.
  45  *
  46  * @stable ICU 2.4
  47  */
  48 typedef int16_t le_int16;
  49
  50 /**
  51  * A type used for unsigned, 16-bit integers.
  52  *
  53  * @stable ICU 2.4
  54  */
  55 typedef uint16_t le_uint16;
  56
  57 /**
  58  * A type used for signed, 8-bit integers.
  59  *
  60  * @stable ICU 2.4
  61  */
  62 typedef int8_t le_int8;
  63
  64 /**
  65  * A type used for unsigned, 8-bit integers.
  66  *
  67  * @stable ICU 2.4
  68  */
  69 typedef uint8_t le_uint8;
  70
  71
  72 /**
  73  * A type used for boolean values.
  74  *
  75  * @stable ICU 2.4
  76  */
  77 typedef UBool le_bool;
  78
  79 #ifndef NULL
  80 /**
  81  * Used to represent empty pointers.
  82  *
  83  * @stable ICU 2.4
  84  */
  85 #define NULL 0
  86 #endif
  87
  88 /**
  89  * Used for four character tags.
  90  *
  91  * @stable ICU 2.4
  92  */
  93 typedef le_uint32 LETag;
  94
  95 /**
  96  * Used for 16-bit glyph indices as they're represented
  97  * in TrueType font tables.
  98  *
  99  * @stable ICU 3.2
 100  */
 101 typedef le_uint16 TTGlyphID;
 102
 103 /**
 104  * Used for glyph indices. The low-order 16 bits are
 105  * the glyph ID within the font. The next 8 bits are
 106  * the sub-font ID within a compound font. The high-
 107  * order 8 bits are client defined. The LayoutEngine
 108  * will never change or look at the client defined bits.
 109  *
 110  * @stable ICU 3.2
 111  */
 112 typedef le_uint32 LEGlyphID;
 113
 114 /**
 115  * Used to mask off the glyph ID part of an LEGlyphID.
 116  *
 117  * @see LEGlyphID
 118  * @stable ICU 3.2
 119  */
 120 #define LE_GLYPH_MASK     0x0000FFFF
 121
 122 /**
 123  * Used to shift the glyph ID part of an LEGlyphID
 124  * into the low-order bits.
 125  *
 126  * @see LEGlyphID
 127  * @stable ICU 3.2
 128  */
 129 #define LE_GLYPH_SHIFT    0
 130
 131
 132 /**
 133  * Used to mask off the sub-font ID part of an LEGlyphID.
 134  *
 135  * @see LEGlyphID
 136  * @stable ICU 3.2
 137  */
 138 #define LE_SUB_FONT_MASK  0x00FF0000
 139
 140 /**
 141  * Used to shift the sub-font ID part of an LEGlyphID
 142  * into the low-order bits.
 143  *
 144  * @see LEGlyphID
 145  * @stable ICU 3.2
 146  */
 147 #define LE_SUB_FONT_SHIFT 16
 148
 149
 150 /**
 151  * Used to mask off the client-defined part of an LEGlyphID.
 152  *
 153  * @see LEGlyphID
 154  * @stable ICU 3.2
 155  */
 156 #define LE_CLIENT_MASK    0xFF000000
 157
 158 /**
 159  * Used to shift the sub-font ID part of an LEGlyphID
 160  * into the low-order bits.
 161  *
 162  * @see LEGlyphID
 163  * @stable ICU 3.2
 164  */
 165 #define LE_CLIENT_SHIFT   24
 166
 167
 168 /**
 169  * A convenience macro to get the Glyph ID part of an LEGlyphID.
 170  *
 171  * @see LEGlyphID
 172  * @stable ICU 3.2
 173  */
 174 #define LE_GET_GLYPH(gid) ((gid & LE_GLYPH_MASK) >> LE_GLYPH_SHIFT)
 175
 176 /**
 177  * A convenience macro to get the sub-font ID part of an LEGlyphID.
 178  *
 179  * @see LEGlyphID
 180  * @stable ICU 3.2
 181  */
 182 #define LE_GET_SUB_FONT(gid) ((gid & LE_SUB_FONT_MASK) >> LE_SUB_FONT_SHIFT)
 183
 184 /**
 185  * A convenience macro to get the client-defined part of an LEGlyphID.
 186  *
 187  * @see LEGlyphID
 188  * @stable ICU 3.2
 189  */
 190 #define LE_GET_CLIENT(gid) ((gid & LE_CLIENT_MASK) >> LE_CLIENT_SHIFT)
 191
 192
 193 /**
 194  * A convenience macro to set the Glyph ID part of an LEGlyphID.
 195  *
 196  * @see LEGlyphID
 197  * @stable ICU 3.2
 198  */
 199 #define LE_SET_GLYPH(gid, glyph) ((gid & ~LE_GLYPH_MASK) | ((glyph << LE_GLYPH_SHIFT) & LE_GLYPH_MASK))
 200
 201 /**
 202  * A convenience macro to set the sub-font ID part of an LEGlyphID.
 203  *
 204  * @see LEGlyphID
 205  * @stable ICU 3.2
 206  */
 207 #define LE_SET_SUB_FONT(gid, font) ((gid & ~LE_SUB_FONT_MASK) | ((font << LE_SUB_FONT_SHIFT) & LE_SUB_FONT_MASK))
 208
 209 /**
 210  * A convenience macro to set the client-defined part of an LEGlyphID.
 211  *
 212  * @see LEGlyphID
 213  * @stable ICU 3.2
 214  */
 215 #define LE_SET_CLIENT(gid, client) ((gid & ~LE_CLIENT_MASK) | ((client << LE_CLIENT_SHIFT) & LE_CLIENT_MASK))
 216
 217
 218 /**
 219  * Used to represent 16-bit Unicode code points.
 220  *
 221  * @stable ICU 2.4
 222  */
 223 typedef UChar LEUnicode16;
 224
 225 /**
 226  * Used to represent 32-bit Unicode code points.
 227  *
 228  * @stable ICU 2.4
 229  */
 230 typedef UChar32 LEUnicode32;
 231
 232 #ifndef U_HIDE_DEPRECATED_API
 233 /**
 234  * Used to represent 16-bit Unicode code points.
 235  *
 236  * @deprecated since ICU 2.4. Use LEUnicode16 instead
 237  */
 238 typedef UChar LEUnicode;
 239 #endif  /* U_HIDE_DEPRECATED_API */
 240
 241 /**
 242  * Used to hold a pair of (x, y) values which represent a point.
 243  *
 244  * @stable ICU 2.4
 245  */
 246 struct LEPoint
 247 {
 248     /**
 249      * The x coordinate of the point.
 250      *
 251      * @stable ICU 2.4
 252      */
 253     float fX;
 254
 255     /**
 256      * The y coordinate of the point.
 257      *
 258      * @stable ICU 2.4
 259      */
 260     float fY;
 261 };
 262
 263 #ifndef __cplusplus
 264 /**
 265  * Used to hold a pair of (x, y) values which represent a point.
 266  *
 267  * @stable ICU 2.4
 268  */
 269 typedef struct LEPoint LEPoint;
 270 #endif
 271
 272
 273 #ifndef U_HIDE_INTERNAL_API
 274 /**
 275  * A convenience macro to get the length of an array.
 276  *
 277  * @internal
 278  */
 279 #define LE_ARRAY_SIZE(array) (sizeof array / sizeof array[0])
 280
 281 #ifdef LE_USE_CMEMORY
 282 /**
 283  * A convenience macro for copying an array.
 284  *
 285  * @internal
 286  */
 287 #define LE_ARRAY_COPY(dst, src, count) uprv_memcpy((void *) (dst), (void *) (src), (count) * sizeof (src)[0])
 288
 289 /**
 290  * Allocate an array of basic types. This is used to isolate the rest of
 291  * the LayoutEngine code from cmemory.h.
 292  *
 293  * @internal
 294  */
 295 #define LE_NEW_ARRAY(type, count) (type *) uprv_malloc((count) * sizeof(type))
 296
 297 /**
 298  * Re-allocate an array of basic types. This is used to isolate the rest of
 299  * the LayoutEngine code from cmemory.h.
 300  *
 301  * @internal
 302  */
 303 #define LE_GROW_ARRAY(array, newSize) uprv_realloc((void *) (array), (newSize) * sizeof (array)[0])
 304
 305  /**
 306  * Free an array of basic types. This is used to isolate the rest of
 307  * the LayoutEngine code from cmemory.h.
 308  *
 309  * @internal
 310  */
 311 #define LE_DELETE_ARRAY(array) uprv_free((void *) (array))
 312 #endif
 313 #endif  /* U_HIDE_INTERNAL_API */
 314
 315 /**
 316  * A macro to construct the four-letter tags used to
 317  * label TrueType tables, and for script, language and
 318  * feature tags in OpenType tables.
 319  *
 320  * WARNING: THIS MACRO WILL ONLY WORK CORRECTLY IF
 321  * THE ARGUMENT CHARACTERS ARE ASCII.
 322  *
 323  * @stable ICU 3.2
 324  */
 325 #define LE_MAKE_TAG(a, b, c, d) \
 326     (((le_uint32)(a) << 24) |   \
 327      ((le_uint32)(b) << 16) |   \
 328      ((le_uint32)(c) << 8)  |   \
 329       (le_uint32)(d))
 330
 331 /**
 332  * This enumeration defines constants for the standard
 333  * TrueType, OpenType and AAT table tags.
 334  *
 335  * @stable ICU 3.2
 336  */
 337 enum LETableTags {
 338     LE_ACNT_TABLE_TAG = 0x61636E74UL, /**< 'acnt' */
 339     LE_AVAR_TABLE_TAG = 0x61766172UL, /**< 'avar' */
 340     LE_BASE_TABLE_TAG = 0x42415345UL, /**< 'BASE' */
 341     LE_BDAT_TABLE_TAG = 0x62646174UL, /**< 'bdat' */
 342     LE_BHED_TABLE_TAG = 0x62686564UL, /**< 'bhed' */
 343     LE_BLOC_TABLE_TAG = 0x626C6F63UL, /**< 'bloc' */
 344     LE_BSLN_TABLE_TAG = 0x62736C6EUL, /**< 'bsln' */
 345     LE_CFF__TABLE_TAG = 0x43464620UL, /**< 'CFF ' */
 346     LE_CMAP_TABLE_TAG = 0x636D6170UL, /**< 'cmap' */
 347     LE_CVAR_TABLE_TAG = 0x63766172UL, /**< 'cvar' */
 348     LE_CVT__TABLE_TAG = 0x63767420UL, /**< 'cvt ' */
 349     LE_DSIG_TABLE_TAG = 0x44534947UL, /**< 'DSIG' */
 350     LE_EBDT_TABLE_TAG = 0x45424454UL, /**< 'EBDT' */
 351     LE_EBLC_TABLE_TAG = 0x45424C43UL, /**< 'EBLC' */
 352     LE_EBSC_TABLE_TAG = 0x45425343UL, /**< 'EBSC' */
 353     LE_FDSC_TABLE_TAG = 0x66647363UL, /**< 'fdsc' */
 354     LE_FEAT_TABLE_TAG = 0x66656174UL, /**< 'feat' */
 355     LE_FMTX_TABLE_TAG = 0x666D7478UL, /**< 'fmtx' */
 356     LE_FPGM_TABLE_TAG = 0x6670676DUL, /**< 'fpgm' */
 357     LE_FVAR_TABLE_TAG = 0x66766172UL, /**< 'fvar' */
 358     LE_GASP_TABLE_TAG = 0x67617370UL, /**< 'gasp' */
 359     LE_GDEF_TABLE_TAG = 0x47444546UL, /**< 'GDEF' */
 360     LE_GLYF_TABLE_TAG = 0x676C7966UL, /**< 'glyf' */
 361     LE_GPOS_TABLE_TAG = 0x47504F53UL, /**< 'GPOS' */
 362     LE_GSUB_TABLE_TAG = 0x47535542UL, /**< 'GSUB' */
 363     LE_GVAR_TABLE_TAG = 0x67766172UL, /**< 'gvar' */
 364     LE_HDMX_TABLE_TAG = 0x68646D78UL, /**< 'hdmx' */
 365     LE_HEAD_TABLE_TAG = 0x68656164UL, /**< 'head' */
 366     LE_HHEA_TABLE_TAG = 0x68686561UL, /**< 'hhea' */
 367     LE_HMTX_TABLE_TAG = 0x686D7478UL, /**< 'hmtx' */
 368     LE_HSTY_TABLE_TAG = 0x68737479UL, /**< 'hsty' */
 369     LE_JUST_TABLE_TAG = 0x6A757374UL, /**< 'just' */
 370     LE_JSTF_TABLE_TAG = 0x4A535446UL, /**< 'JSTF' */
 371     LE_KERN_TABLE_TAG = 0x6B65726EUL, /**< 'kern' */
 372     LE_LCAR_TABLE_TAG = 0x6C636172UL, /**< 'lcar' */
 373     LE_LOCA_TABLE_TAG = 0x6C6F6361UL, /**< 'loca' */
 374     LE_LTSH_TABLE_TAG = 0x4C545348UL, /**< 'LTSH' */
 375     LE_MAXP_TABLE_TAG = 0x6D617870UL, /**< 'maxp' */
 376     LE_MORT_TABLE_TAG = 0x6D6F7274UL, /**< 'mort' */
 377     LE_MORX_TABLE_TAG = 0x6D6F7278UL, /**< 'morx' */
 378     LE_NAME_TABLE_TAG = 0x6E616D65UL, /**< 'name' */
 379     LE_OPBD_TABLE_TAG = 0x6F706264UL, /**< 'opbd' */
 380     LE_OS_2_TABLE_TAG = 0x4F532F32UL, /**< 'OS/2' */
 381     LE_PCLT_TABLE_TAG = 0x50434C54UL, /**< 'PCLT' */
 382     LE_POST_TABLE_TAG = 0x706F7374UL, /**< 'post' */
 383     LE_PREP_TABLE_TAG = 0x70726570UL, /**< 'prep' */
 384     LE_PROP_TABLE_TAG = 0x70726F70UL, /**< 'prop' */
 385     LE_TRAK_TABLE_TAG = 0x7472616BUL, /**< 'trak' */
 386     LE_VDMX_TABLE_TAG = 0x56444D58UL, /**< 'VDMX' */
 387     LE_VHEA_TABLE_TAG = 0x76686561UL, /**< 'vhea' */
 388     LE_VMTX_TABLE_TAG = 0x766D7478UL, /**< 'vmtx' */
 389     LE_VORG_TABLE_TAG = 0x564F5247UL, /**< 'VORG' */
 390     LE_ZAPF_TABLE_TAG = 0x5A617066UL  /**< 'Zapf' */
 391 };
 392
 393 /**
 394  * This enumeration defines constants for all
 395  * the common OpenType feature tags.
 396  *
 397  * @stable ICU 3.2
 398  */
 399 enum LEFeatureTags {
 400     LE_AALT_FEATURE_TAG = 0x61616C74UL, /**< 'aalt' */
 401     LE_ABVF_FEATURE_TAG = 0x61627666UL, /**< 'abvf' */
 402     LE_ABVM_FEATURE_TAG = 0x6162766DUL, /**< 'abvm' */
 403     LE_ABVS_FEATURE_TAG = 0x61627673UL, /**< 'abvs' */
 404     LE_AFRC_FEATURE_TAG = 0x61667263UL, /**< 'afrc' */
 405     LE_AKHN_FEATURE_TAG = 0x616B686EUL, /**< 'akhn' */
 406     LE_BLWF_FEATURE_TAG = 0x626C7766UL, /**< 'blwf' */
 407     LE_BLWM_FEATURE_TAG = 0x626C776DUL, /**< 'blwm' */
 408     LE_BLWS_FEATURE_TAG = 0x626C7773UL, /**< 'blws' */
 409     LE_CALT_FEATURE_TAG = 0x63616C74UL, /**< 'calt' */
 410     LE_CASE_FEATURE_TAG = 0x63617365UL, /**< 'case' */
 411     LE_CCMP_FEATURE_TAG = 0x63636D70UL, /**< 'ccmp' */
 412         LE_CJCT_FEATURE_TAG = 0x636A6374UL, /**< 'cjct' */
 413     LE_CLIG_FEATURE_TAG = 0x636C6967UL, /**< 'clig' */
 414     LE_CPSP_FEATURE_TAG = 0x63707370UL, /**< 'cpsp' */
 415     LE_CSWH_FEATURE_TAG = 0x63737768UL, /**< 'cswh' */
 416     LE_CURS_FEATURE_TAG = 0x63757273UL, /**< 'curs' */
 417     LE_C2SC_FEATURE_TAG = 0x63327363UL, /**< 'c2sc' */
 418     LE_C2PC_FEATURE_TAG = 0x63327063UL, /**< 'c2pc' */
 419     LE_DIST_FEATURE_TAG = 0x64697374UL, /**< 'dist' */
 420     LE_DLIG_FEATURE_TAG = 0x646C6967UL, /**< 'dlig' */
 421     LE_DNOM_FEATURE_TAG = 0x646E6F6DUL, /**< 'dnom' */
 422     LE_EXPT_FEATURE_TAG = 0x65787074UL, /**< 'expt' */
 423     LE_FALT_FEATURE_TAG = 0x66616C74UL, /**< 'falt' */
 424     LE_FIN2_FEATURE_TAG = 0x66696E32UL, /**< 'fin2' */
 425     LE_FIN3_FEATURE_TAG = 0x66696E33UL, /**< 'fin3' */
 426     LE_FINA_FEATURE_TAG = 0x66696E61UL, /**< 'fina' */
 427     LE_FRAC_FEATURE_TAG = 0x66726163UL, /**< 'frac' */
 428     LE_FWID_FEATURE_TAG = 0x66776964UL, /**< 'fwid' */
 429     LE_HALF_FEATURE_TAG = 0x68616C66UL, /**< 'half' */
 430     LE_HALN_FEATURE_TAG = 0x68616C6EUL, /**< 'haln' */
 431     LE_HALT_FEATURE_TAG = 0x68616C74UL, /**< 'halt' */
 432     LE_HIST_FEATURE_TAG = 0x68697374UL, /**< 'hist' */
 433     LE_HKNA_FEATURE_TAG = 0x686B6E61UL, /**< 'hkna' */
 434     LE_HLIG_FEATURE_TAG = 0x686C6967UL, /**< 'hlig' */
 435     LE_HNGL_FEATURE_TAG = 0x686E676CUL, /**< 'hngl' */
 436     LE_HWID_FEATURE_TAG = 0x68776964UL, /**< 'hwid' */
 437     LE_INIT_FEATURE_TAG = 0x696E6974UL, /**< 'init' */
 438     LE_ISOL_FEATURE_TAG = 0x69736F6CUL, /**< 'isol' */
 439     LE_ITAL_FEATURE_TAG = 0x6974616CUL, /**< 'ital' */
 440     LE_JALT_FEATURE_TAG = 0x6A616C74UL, /**< 'jalt' */
 441     LE_JP78_FEATURE_TAG = 0x6A703738UL, /**< 'jp78' */
 442     LE_JP83_FEATURE_TAG = 0x6A703833UL, /**< 'jp83' */
 443     LE_JP90_FEATURE_TAG = 0x6A703930UL, /**< 'jp90' */
 444     LE_KERN_FEATURE_TAG = 0x6B65726EUL, /**< 'kern' */
 445     LE_LFBD_FEATURE_TAG = 0x6C666264UL, /**< 'lfbd' */
 446     LE_LIGA_FEATURE_TAG = 0x6C696761UL, /**< 'liga' */
 447     LE_LJMO_FEATURE_TAG = 0x6C6A6D6FUL, /**< 'ljmo' */
 448     LE_LNUM_FEATURE_TAG = 0x6C6E756DUL, /**< 'lnum' */
 449     LE_LOCL_FEATURE_TAG = 0x6C6F636CUL, /**< 'locl' */
 450     LE_MARK_FEATURE_TAG = 0x6D61726BUL, /**< 'mark' */
 451     LE_MED2_FEATURE_TAG = 0x6D656432UL, /**< 'med2' */
 452     LE_MEDI_FEATURE_TAG = 0x6D656469UL, /**< 'medi' */
 453     LE_MGRK_FEATURE_TAG = 0x6D67726BUL, /**< 'mgrk' */
 454     LE_MKMK_FEATURE_TAG = 0x6D6B6D6BUL, /**< 'mkmk' */
 455     LE_MSET_FEATURE_TAG = 0x6D736574UL, /**< 'mset' */
 456     LE_NALT_FEATURE_TAG = 0x6E616C74UL, /**< 'nalt' */
 457     LE_NLCK_FEATURE_TAG = 0x6E6C636BUL, /**< 'nlck' */
 458     LE_NUKT_FEATURE_TAG = 0x6E756B74UL, /**< 'nukt' */
 459     LE_NUMR_FEATURE_TAG = 0x6E756D72UL, /**< 'numr' */
 460     LE_ONUM_FEATURE_TAG = 0x6F6E756DUL, /**< 'onum' */
 461     LE_OPBD_FEATURE_TAG = 0x6F706264UL, /**< 'opbd' */
 462     LE_ORDN_FEATURE_TAG = 0x6F72646EUL, /**< 'ordn' */
 463     LE_ORNM_FEATURE_TAG = 0x6F726E6DUL, /**< 'ornm' */
 464     LE_PALT_FEATURE_TAG = 0x70616C74UL, /**< 'palt' */
 465     LE_PCAP_FEATURE_TAG = 0x70636170UL, /**< 'pcap' */
 466     LE_PNUM_FEATURE_TAG = 0x706E756DUL, /**< 'pnum' */
 467     LE_PREF_FEATURE_TAG = 0x70726566UL, /**< 'pref' */
 468     LE_PRES_FEATURE_TAG = 0x70726573UL, /**< 'pres' */
 469     LE_PSTF_FEATURE_TAG = 0x70737466UL, /**< 'pstf' */
 470     LE_PSTS_FEATURE_TAG = 0x70737473UL, /**< 'psts' */
 471     LE_PWID_FEATURE_TAG = 0x70776964UL, /**< 'pwid' */
 472     LE_QWID_FEATURE_TAG = 0x71776964UL, /**< 'qwid' */
 473     LE_RAND_FEATURE_TAG = 0x72616E64UL, /**< 'rand' */
 474     LE_RLIG_FEATURE_TAG = 0x726C6967UL, /**< 'rlig' */
 475     LE_RPHF_FEATURE_TAG = 0x72706866UL, /**< 'rphf' */
 476         LE_RKRF_FEATURE_TAG = 0x726B7266UL, /**< 'rkrf' */
 477     LE_RTBD_FEATURE_TAG = 0x72746264UL, /**< 'rtbd' */
 478     LE_RTLA_FEATURE_TAG = 0x72746C61UL, /**< 'rtla' */
 479     LE_RUBY_FEATURE_TAG = 0x72756279UL, /**< 'ruby' */
 480     LE_SALT_FEATURE_TAG = 0x73616C74UL, /**< 'salt' */
 481     LE_SINF_FEATURE_TAG = 0x73696E66UL, /**< 'sinf' */
 482     LE_SIZE_FEATURE_TAG = 0x73697A65UL, /**< 'size' */
 483     LE_SMCP_FEATURE_TAG = 0x736D6370UL, /**< 'smcp' */
 484     LE_SMPL_FEATURE_TAG = 0x736D706CUL, /**< 'smpl' */
 485     LE_SS01_FEATURE_TAG = 0x73733031UL, /**< 'ss01' */
 486     LE_SS02_FEATURE_TAG = 0x73733032UL, /**< 'ss02' */
 487     LE_SS03_FEATURE_TAG = 0x73733033UL, /**< 'ss03' */
 488     LE_SS04_FEATURE_TAG = 0x73733034UL, /**< 'ss04' */
 489     LE_SS05_FEATURE_TAG = 0x73733035UL, /**< 'ss05' */
 490     LE_SS06_FEATURE_TAG = 0x73733036UL, /**< 'ss06' */
 491     LE_SS07_FEATURE_TAG = 0x73733037UL, /**< 'ss07' */
 492     LE_SS08_FEATURE_TAG = 0x73733038UL, /**< 'ss08' */
 493     LE_SS09_FEATURE_TAG = 0x73733039UL, /**< 'ss09' */
 494     LE_SS10_FEATURE_TAG = 0x73733130UL, /**< 'ss10' */
 495     LE_SS11_FEATURE_TAG = 0x73733131UL, /**< 'ss11' */
 496     LE_SS12_FEATURE_TAG = 0x73733132UL, /**< 'ss12' */
 497     LE_SS13_FEATURE_TAG = 0x73733133UL, /**< 'ss13' */
 498     LE_SS14_FEATURE_TAG = 0x73733134UL, /**< 'ss14' */
 499     LE_SS15_FEATURE_TAG = 0x73733135UL, /**< 'ss15' */
 500     LE_SS16_FEATURE_TAG = 0x73733136UL, /**< 'ss16' */
 501     LE_SS17_FEATURE_TAG = 0x73733137UL, /**< 'ss17' */
 502     LE_SS18_FEATURE_TAG = 0x73733138UL, /**< 'ss18' */
 503     LE_SS19_FEATURE_TAG = 0x73733139UL, /**< 'ss19' */
 504     LE_SS20_FEATURE_TAG = 0x73733230UL, /**< 'ss20' */
 505     LE_SUBS_FEATURE_TAG = 0x73756273UL, /**< 'subs' */
 506     LE_SUPS_FEATURE_TAG = 0x73757073UL, /**< 'sups' */
 507     LE_SWSH_FEATURE_TAG = 0x73777368UL, /**< 'swsh' */
 508     LE_TITL_FEATURE_TAG = 0x7469746CUL, /**< 'titl' */
 509     LE_TJMO_FEATURE_TAG = 0x746A6D6FUL, /**< 'tjmo' */
 510     LE_TNAM_FEATURE_TAG = 0x746E616DUL, /**< 'tnam' */
 511     LE_TNUM_FEATURE_TAG = 0x746E756DUL, /**< 'tnum' */
 512     LE_TRAD_FEATURE_TAG = 0x74726164UL, /**< 'trad' */
 513     LE_TWID_FEATURE_TAG = 0x74776964UL, /**< 'twid' */
 514     LE_UNIC_FEATURE_TAG = 0x756E6963UL, /**< 'unic' */
 515     LE_VALT_FEATURE_TAG = 0x76616C74UL, /**< 'valt' */
 516     LE_VATU_FEATURE_TAG = 0x76617475UL, /**< 'vatu' */
 517     LE_VERT_FEATURE_TAG = 0x76657274UL, /**< 'vert' */
 518     LE_VHAL_FEATURE_TAG = 0x7668616CUL, /**< 'vhal' */
 519     LE_VJMO_FEATURE_TAG = 0x766A6D6FUL, /**< 'vjmo' */
 520     LE_VKNA_FEATURE_TAG = 0x766B6E61UL, /**< 'vkna' */
 521     LE_VKRN_FEATURE_TAG = 0x766B726EUL, /**< 'vkrn' */
 522     LE_VPAL_FEATURE_TAG = 0x7670616CUL, /**< 'vpal' */
 523     LE_VRT2_FEATURE_TAG = 0x76727432UL, /**< 'vrt2' */
 524     LE_ZERO_FEATURE_TAG = 0x7A65726FUL  /**< 'zero' */
 525 };
 526
 527 /**
 528  * Error codes returned by the LayoutEngine.
 529  *
 530  * @stable ICU 2.4
 531  */
 532 enum LEErrorCode {
 533     /* informational */
 534     LE_NO_SUBFONT_WARNING          = U_USING_DEFAULT_WARNING, /**< The font does not contain subfonts. */
 535
 536     /* success */
 537     LE_NO_ERROR                     = U_ZERO_ERROR, /**< No error, no warning. */
 538
 539     /* failures */
 540     LE_ILLEGAL_ARGUMENT_ERROR       = U_ILLEGAL_ARGUMENT_ERROR,  /**< An illegal argument was detected. */
 541     LE_MEMORY_ALLOCATION_ERROR      = U_MEMORY_ALLOCATION_ERROR, /**< Memory allocation error. */
 542     LE_INDEX_OUT_OF_BOUNDS_ERROR    = U_INDEX_OUTOFBOUNDS_ERROR, /**< Trying to access an index that is out of bounds. */
 543     LE_NO_LAYOUT_ERROR              = U_UNSUPPORTED_ERROR,       /**< You must call layoutChars() first. */
 544     LE_INTERNAL_ERROR               = U_INTERNAL_PROGRAM_ERROR,  /**< An internal error was encountered. */
 545     LE_FONT_FILE_NOT_FOUND_ERROR    = U_FILE_ACCESS_ERROR,       /**< The requested font file cannot be opened. */
 546     LE_MISSING_FONT_TABLE_ERROR     = U_MISSING_RESOURCE_ERROR   /**< The requested font table does not exist. */
 547 };
 548
 549 #ifndef __cplusplus
 550 /**
 551  * Error codes returned by the LayoutEngine.
 552  *
 553  * @stable ICU 2.4
 554  */
 555 typedef enum LEErrorCode LEErrorCode;
 556 #endif
 557
 558 /**
 559  * A convenience macro to test for the success of a LayoutEngine call.
 560  *
 561  * @stable ICU 2.4
 562  */
 563 #define LE_SUCCESS(code) (U_SUCCESS((UErrorCode)code))
 564
 565 /**
 566  * A convenience macro to test for the failure of a LayoutEngine call.
 567  *
 568  * @stable ICU 2.4
 569  */
 570 #define LE_FAILURE(code) (U_FAILURE((UErrorCode)code))
 571
 572 #endif