1 | /**************************************************************************** |
2 | * |
3 | * sfdriver.c |
4 | * |
5 | * High-level SFNT driver interface (body). |
6 | * |
7 | * Copyright (C) 1996-2023 by |
8 | * David Turner, Robert Wilhelm, and Werner Lemberg. |
9 | * |
10 | * This file is part of the FreeType project, and may only be used, |
11 | * modified, and distributed under the terms of the FreeType project |
12 | * license, LICENSE.TXT. By continuing to use, modify, or distribute |
13 | * this file you indicate that you have read the license and |
14 | * understand and accept it fully. |
15 | * |
16 | */ |
17 | |
18 | |
19 | #include <freetype/internal/ftdebug.h> |
20 | #include <freetype/internal/sfnt.h> |
21 | #include <freetype/internal/ftobjs.h> |
22 | #include <freetype/ttnameid.h> |
23 | |
24 | #include "sfdriver.h" |
25 | #include "ttload.h" |
26 | #include "sfobjs.h" |
27 | |
28 | #include "sferrors.h" |
29 | |
30 | #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
31 | #include "ttsbit.h" |
32 | #endif |
33 | |
34 | #ifdef TT_CONFIG_OPTION_COLOR_LAYERS |
35 | #include "ttcolr.h" |
36 | #include "ttcpal.h" |
37 | #endif |
38 | |
39 | #ifdef FT_CONFIG_OPTION_SVG |
40 | #include "ttsvg.h" |
41 | #endif |
42 | |
43 | #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
44 | #include "ttpost.h" |
45 | #endif |
46 | |
47 | #ifdef TT_CONFIG_OPTION_BDF |
48 | #include "ttbdf.h" |
49 | #include <freetype/internal/services/svbdf.h> |
50 | #endif |
51 | |
52 | #include "ttcmap.h" |
53 | #include "ttkern.h" |
54 | #include "ttmtx.h" |
55 | |
56 | #include <freetype/internal/services/svgldict.h> |
57 | #include <freetype/internal/services/svpostnm.h> |
58 | #include <freetype/internal/services/svsfnt.h> |
59 | #include <freetype/internal/services/svttcmap.h> |
60 | |
61 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
62 | #include <freetype/ftmm.h> |
63 | #include <freetype/internal/services/svmm.h> |
64 | #endif |
65 | |
66 | |
67 | /************************************************************************** |
68 | * |
69 | * The macro FT_COMPONENT is used in trace mode. It is an implicit |
70 | * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log |
71 | * messages during execution. |
72 | */ |
73 | #undef FT_COMPONENT |
74 | #define FT_COMPONENT sfdriver |
75 | |
76 | |
77 | /* |
78 | * SFNT TABLE SERVICE |
79 | * |
80 | */ |
81 | |
82 | FT_CALLBACK_DEF( FT_Error ) |
83 | sfnt_load_table( FT_Face face, /* TT_Face */ |
84 | FT_ULong tag, |
85 | FT_Long offset, |
86 | FT_Byte* buffer, |
87 | FT_ULong* length ) |
88 | { |
89 | TT_Face ttface = (TT_Face)face; |
90 | |
91 | |
92 | return tt_face_load_any( ttface, tag, offset, buffer, length ); |
93 | } |
94 | |
95 | |
96 | FT_CALLBACK_DEF( void* ) |
97 | get_sfnt_table( FT_Face face, /* TT_Face */ |
98 | FT_Sfnt_Tag tag ) |
99 | { |
100 | TT_Face ttface = (TT_Face)face; |
101 | |
102 | void* table; |
103 | |
104 | |
105 | switch ( tag ) |
106 | { |
107 | case FT_SFNT_HEAD: |
108 | table = &ttface->header; |
109 | break; |
110 | |
111 | case FT_SFNT_HHEA: |
112 | table = &ttface->horizontal; |
113 | break; |
114 | |
115 | case FT_SFNT_VHEA: |
116 | table = ttface->vertical_info ? &ttface->vertical : NULL; |
117 | break; |
118 | |
119 | case FT_SFNT_OS2: |
120 | table = ( ttface->os2.version == 0xFFFFU ) ? NULL : &ttface->os2; |
121 | break; |
122 | |
123 | case FT_SFNT_POST: |
124 | table = &ttface->postscript; |
125 | break; |
126 | |
127 | case FT_SFNT_MAXP: |
128 | table = &ttface->max_profile; |
129 | break; |
130 | |
131 | case FT_SFNT_PCLT: |
132 | table = ttface->pclt.Version ? &ttface->pclt : NULL; |
133 | break; |
134 | |
135 | default: |
136 | table = NULL; |
137 | } |
138 | |
139 | return table; |
140 | } |
141 | |
142 | |
143 | FT_CALLBACK_DEF( FT_Error ) |
144 | sfnt_table_info( FT_Face face, /* TT_Face */ |
145 | FT_UInt idx, |
146 | FT_ULong *tag, |
147 | FT_ULong *offset, |
148 | FT_ULong *length ) |
149 | { |
150 | TT_Face ttface = (TT_Face)face; |
151 | |
152 | |
153 | if ( !offset || !length ) |
154 | return FT_THROW( Invalid_Argument ); |
155 | |
156 | if ( !tag ) |
157 | *length = ttface->num_tables; |
158 | else |
159 | { |
160 | if ( idx >= ttface->num_tables ) |
161 | return FT_THROW( Table_Missing ); |
162 | |
163 | *tag = ttface->dir_tables[idx].Tag; |
164 | *offset = ttface->dir_tables[idx].Offset; |
165 | *length = ttface->dir_tables[idx].Length; |
166 | } |
167 | |
168 | return FT_Err_Ok; |
169 | } |
170 | |
171 | |
172 | FT_DEFINE_SERVICE_SFNT_TABLEREC( |
173 | sfnt_service_sfnt_table, |
174 | |
175 | sfnt_load_table, /* FT_SFNT_TableLoadFunc load_table */ |
176 | get_sfnt_table, /* FT_SFNT_TableGetFunc get_table */ |
177 | sfnt_table_info /* FT_SFNT_TableInfoFunc table_info */ |
178 | ) |
179 | |
180 | |
181 | #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
182 | |
183 | /* |
184 | * GLYPH DICT SERVICE |
185 | * |
186 | */ |
187 | |
188 | FT_CALLBACK_DEF( FT_Error ) |
189 | sfnt_get_glyph_name( FT_Face face, |
190 | FT_UInt glyph_index, |
191 | FT_Pointer buffer, |
192 | FT_UInt buffer_max ) |
193 | { |
194 | FT_String* gname; |
195 | FT_Error error; |
196 | |
197 | |
198 | error = tt_face_get_ps_name( (TT_Face)face, glyph_index, &gname ); |
199 | if ( !error ) |
200 | FT_STRCPYN( buffer, gname, buffer_max ); |
201 | |
202 | return error; |
203 | } |
204 | |
205 | |
206 | FT_CALLBACK_DEF( FT_UInt ) |
207 | sfnt_get_name_index( FT_Face face, |
208 | const FT_String* glyph_name ) |
209 | { |
210 | TT_Face ttface = (TT_Face)face; |
211 | |
212 | FT_UInt i, max_gid = FT_UINT_MAX; |
213 | |
214 | |
215 | if ( face->num_glyphs < 0 ) |
216 | return 0; |
217 | else if ( (FT_ULong)face->num_glyphs < FT_UINT_MAX ) |
218 | max_gid = (FT_UInt)face->num_glyphs; |
219 | else |
220 | FT_TRACE0(( "Ignore glyph names for invalid GID 0x%08x - 0x%08lx\n" , |
221 | FT_UINT_MAX, face->num_glyphs )); |
222 | |
223 | for ( i = 0; i < max_gid; i++ ) |
224 | { |
225 | FT_String* gname; |
226 | FT_Error error = tt_face_get_ps_name( ttface, i, &gname ); |
227 | |
228 | |
229 | if ( error ) |
230 | continue; |
231 | |
232 | if ( !ft_strcmp( glyph_name, gname ) ) |
233 | return i; |
234 | } |
235 | |
236 | return 0; |
237 | } |
238 | |
239 | |
240 | FT_DEFINE_SERVICE_GLYPHDICTREC( |
241 | sfnt_service_glyph_dict, |
242 | |
243 | sfnt_get_glyph_name, /* FT_GlyphDict_GetNameFunc get_name */ |
244 | sfnt_get_name_index /* FT_GlyphDict_NameIndexFunc name_index */ |
245 | ) |
246 | |
247 | #endif /* TT_CONFIG_OPTION_POSTSCRIPT_NAMES */ |
248 | |
249 | |
250 | /* |
251 | * POSTSCRIPT NAME SERVICE |
252 | * |
253 | */ |
254 | |
255 | /* an array representing allowed ASCII characters in a PS string */ |
256 | static const unsigned char sfnt_ps_map[16] = |
257 | { |
258 | /* 4 0 C 8 */ |
259 | 0x00, 0x00, /* 0x00: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 */ |
260 | 0x00, 0x00, /* 0x10: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 */ |
261 | 0xDE, 0x7C, /* 0x20: 1 1 0 1 1 1 1 0 0 1 1 1 1 1 0 0 */ |
262 | 0xFF, 0xAF, /* 0x30: 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 */ |
263 | 0xFF, 0xFF, /* 0x40: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 */ |
264 | 0xFF, 0xD7, /* 0x50: 1 1 1 1 1 1 1 1 1 1 0 1 0 1 1 1 */ |
265 | 0xFF, 0xFF, /* 0x60: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 */ |
266 | 0xFF, 0x57 /* 0x70: 1 1 1 1 1 1 1 1 0 1 0 1 0 1 1 1 */ |
267 | }; |
268 | |
269 | |
270 | static int |
271 | sfnt_is_postscript( int c ) |
272 | { |
273 | unsigned int cc; |
274 | |
275 | |
276 | if ( c < 0 || c >= 0x80 ) |
277 | return 0; |
278 | |
279 | cc = (unsigned int)c; |
280 | |
281 | return sfnt_ps_map[cc >> 3] & ( 1 << ( cc & 0x07 ) ); |
282 | } |
283 | |
284 | |
285 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
286 | |
287 | /* Only ASCII letters and digits are taken for a variation font */ |
288 | /* instance's PostScript name. */ |
289 | /* */ |
290 | /* `ft_isalnum' is a macro, but we need a function here, thus */ |
291 | /* this definition. */ |
292 | static int |
293 | sfnt_is_alphanumeric( int c ) |
294 | { |
295 | return ft_isalnum( c ); |
296 | } |
297 | |
298 | |
299 | /* the implementation of MurmurHash3 is taken and adapted from */ |
300 | /* https://github.com/aappleby/smhasher/blob/master/src/MurmurHash3.cpp */ |
301 | |
302 | #define ROTL32( x, r ) ( x << r ) | ( x >> ( 32 - r ) ) |
303 | |
304 | |
305 | static FT_UInt32 |
306 | fmix32( FT_UInt32 h ) |
307 | { |
308 | h ^= h >> 16; |
309 | h *= 0x85ebca6b; |
310 | h ^= h >> 13; |
311 | h *= 0xc2b2ae35; |
312 | h ^= h >> 16; |
313 | |
314 | return h; |
315 | } |
316 | |
317 | |
318 | static void |
319 | murmur_hash_3_128( const void* key, |
320 | const unsigned int len, |
321 | FT_UInt32 seed, |
322 | void* out ) |
323 | { |
324 | const FT_Byte* data = (const FT_Byte*)key; |
325 | const int nblocks = (int)len / 16; |
326 | |
327 | FT_UInt32 h1 = seed; |
328 | FT_UInt32 h2 = seed; |
329 | FT_UInt32 h3 = seed; |
330 | FT_UInt32 h4 = seed; |
331 | |
332 | const FT_UInt32 c1 = 0x239b961b; |
333 | const FT_UInt32 c2 = 0xab0e9789; |
334 | const FT_UInt32 c3 = 0x38b34ae5; |
335 | const FT_UInt32 c4 = 0xa1e38b93; |
336 | |
337 | const FT_UInt32* blocks = (const FT_UInt32*)( data + nblocks * 16 ); |
338 | |
339 | int i; |
340 | |
341 | |
342 | for( i = -nblocks; i; i++ ) |
343 | { |
344 | FT_UInt32 k1 = blocks[i * 4 + 0]; |
345 | FT_UInt32 k2 = blocks[i * 4 + 1]; |
346 | FT_UInt32 k3 = blocks[i * 4 + 2]; |
347 | FT_UInt32 k4 = blocks[i * 4 + 3]; |
348 | |
349 | |
350 | k1 *= c1; |
351 | k1 = ROTL32( k1, 15 ); |
352 | k1 *= c2; |
353 | h1 ^= k1; |
354 | |
355 | h1 = ROTL32( h1, 19 ); |
356 | h1 += h2; |
357 | h1 = h1 * 5 + 0x561ccd1b; |
358 | |
359 | k2 *= c2; |
360 | k2 = ROTL32( k2, 16 ); |
361 | k2 *= c3; |
362 | h2 ^= k2; |
363 | |
364 | h2 = ROTL32( h2, 17 ); |
365 | h2 += h3; |
366 | h2 = h2 * 5 + 0x0bcaa747; |
367 | |
368 | k3 *= c3; |
369 | k3 = ROTL32( k3, 17 ); |
370 | k3 *= c4; |
371 | h3 ^= k3; |
372 | |
373 | h3 = ROTL32( h3, 15 ); |
374 | h3 += h4; |
375 | h3 = h3 * 5 + 0x96cd1c35; |
376 | |
377 | k4 *= c4; |
378 | k4 = ROTL32( k4, 18 ); |
379 | k4 *= c1; |
380 | h4 ^= k4; |
381 | |
382 | h4 = ROTL32( h4, 13 ); |
383 | h4 += h1; |
384 | h4 = h4 * 5 + 0x32ac3b17; |
385 | } |
386 | |
387 | { |
388 | const FT_Byte* tail = (const FT_Byte*)( data + nblocks * 16 ); |
389 | |
390 | FT_UInt32 k1 = 0; |
391 | FT_UInt32 k2 = 0; |
392 | FT_UInt32 k3 = 0; |
393 | FT_UInt32 k4 = 0; |
394 | |
395 | |
396 | switch ( len & 15 ) |
397 | { |
398 | case 15: |
399 | k4 ^= (FT_UInt32)tail[14] << 16; |
400 | FALL_THROUGH; |
401 | case 14: |
402 | k4 ^= (FT_UInt32)tail[13] << 8; |
403 | FALL_THROUGH; |
404 | case 13: |
405 | k4 ^= (FT_UInt32)tail[12]; |
406 | k4 *= c4; |
407 | k4 = ROTL32( k4, 18 ); |
408 | k4 *= c1; |
409 | h4 ^= k4; |
410 | FALL_THROUGH; |
411 | |
412 | case 12: |
413 | k3 ^= (FT_UInt32)tail[11] << 24; |
414 | FALL_THROUGH; |
415 | case 11: |
416 | k3 ^= (FT_UInt32)tail[10] << 16; |
417 | FALL_THROUGH; |
418 | case 10: |
419 | k3 ^= (FT_UInt32)tail[9] << 8; |
420 | FALL_THROUGH; |
421 | case 9: |
422 | k3 ^= (FT_UInt32)tail[8]; |
423 | k3 *= c3; |
424 | k3 = ROTL32( k3, 17 ); |
425 | k3 *= c4; |
426 | h3 ^= k3; |
427 | FALL_THROUGH; |
428 | |
429 | case 8: |
430 | k2 ^= (FT_UInt32)tail[7] << 24; |
431 | FALL_THROUGH; |
432 | case 7: |
433 | k2 ^= (FT_UInt32)tail[6] << 16; |
434 | FALL_THROUGH; |
435 | case 6: |
436 | k2 ^= (FT_UInt32)tail[5] << 8; |
437 | FALL_THROUGH; |
438 | case 5: |
439 | k2 ^= (FT_UInt32)tail[4]; |
440 | k2 *= c2; |
441 | k2 = ROTL32( k2, 16 ); |
442 | k2 *= c3; |
443 | h2 ^= k2; |
444 | FALL_THROUGH; |
445 | |
446 | case 4: |
447 | k1 ^= (FT_UInt32)tail[3] << 24; |
448 | FALL_THROUGH; |
449 | case 3: |
450 | k1 ^= (FT_UInt32)tail[2] << 16; |
451 | FALL_THROUGH; |
452 | case 2: |
453 | k1 ^= (FT_UInt32)tail[1] << 8; |
454 | FALL_THROUGH; |
455 | case 1: |
456 | k1 ^= (FT_UInt32)tail[0]; |
457 | k1 *= c1; |
458 | k1 = ROTL32( k1, 15 ); |
459 | k1 *= c2; |
460 | h1 ^= k1; |
461 | } |
462 | } |
463 | |
464 | h1 ^= len; |
465 | h2 ^= len; |
466 | h3 ^= len; |
467 | h4 ^= len; |
468 | |
469 | h1 += h2; |
470 | h1 += h3; |
471 | h1 += h4; |
472 | |
473 | h2 += h1; |
474 | h3 += h1; |
475 | h4 += h1; |
476 | |
477 | h1 = fmix32( h1 ); |
478 | h2 = fmix32( h2 ); |
479 | h3 = fmix32( h3 ); |
480 | h4 = fmix32( h4 ); |
481 | |
482 | h1 += h2; |
483 | h1 += h3; |
484 | h1 += h4; |
485 | |
486 | h2 += h1; |
487 | h3 += h1; |
488 | h4 += h1; |
489 | |
490 | ((FT_UInt32*)out)[0] = h1; |
491 | ((FT_UInt32*)out)[1] = h2; |
492 | ((FT_UInt32*)out)[2] = h3; |
493 | ((FT_UInt32*)out)[3] = h4; |
494 | } |
495 | |
496 | |
497 | #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ |
498 | |
499 | |
500 | typedef int (*char_type_func)( int c ); |
501 | |
502 | |
503 | /* Handling of PID/EID 3/0 and 3/1 is the same. */ |
504 | #define IS_WIN( n ) ( (n)->platformID == 3 && \ |
505 | ( (n)->encodingID == 1 || (n)->encodingID == 0 ) ) |
506 | |
507 | #define IS_APPLE( n ) ( (n)->platformID == 1 && \ |
508 | (n)->encodingID == 0 ) |
509 | |
510 | static char* |
511 | get_win_string( FT_Memory memory, |
512 | FT_Stream stream, |
513 | TT_Name entry, |
514 | char_type_func char_type, |
515 | FT_Bool report_invalid_characters ) |
516 | { |
517 | FT_Error error; |
518 | |
519 | char* result = NULL; |
520 | FT_String* r; |
521 | FT_Char* p; |
522 | FT_UInt len; |
523 | |
524 | |
525 | if ( FT_QALLOC( result, entry->stringLength / 2 + 1 ) ) |
526 | return NULL; |
527 | |
528 | if ( FT_STREAM_SEEK( entry->stringOffset ) || |
529 | FT_FRAME_ENTER( entry->stringLength ) ) |
530 | goto get_win_string_error; |
531 | |
532 | r = (FT_String*)result; |
533 | p = (FT_Char*)stream->cursor; |
534 | |
535 | for ( len = entry->stringLength / 2; len > 0; len--, p += 2 ) |
536 | { |
537 | if ( p[0] == 0 && char_type( p[1] ) ) |
538 | *r++ = p[1]; |
539 | else |
540 | { |
541 | if ( report_invalid_characters ) |
542 | FT_TRACE0(( "get_win_string:" |
543 | " Character 0x%X invalid in PS name string\n" , |
544 | ((unsigned)p[0])*256 + (unsigned)p[1] )); |
545 | continue; |
546 | } |
547 | } |
548 | *r = '\0'; |
549 | |
550 | FT_FRAME_EXIT(); |
551 | |
552 | if ( r != result ) |
553 | return result; |
554 | |
555 | get_win_string_error: |
556 | FT_FREE( result ); |
557 | |
558 | entry->stringLength = 0; |
559 | entry->stringOffset = 0; |
560 | FT_FREE( entry->string ); |
561 | |
562 | return NULL; |
563 | } |
564 | |
565 | |
566 | static char* |
567 | get_apple_string( FT_Memory memory, |
568 | FT_Stream stream, |
569 | TT_Name entry, |
570 | char_type_func char_type, |
571 | FT_Bool report_invalid_characters ) |
572 | { |
573 | FT_Error error; |
574 | |
575 | char* result = NULL; |
576 | FT_String* r; |
577 | FT_Char* p; |
578 | FT_UInt len; |
579 | |
580 | |
581 | if ( FT_QALLOC( result, entry->stringLength + 1 ) ) |
582 | return NULL; |
583 | |
584 | if ( FT_STREAM_SEEK( entry->stringOffset ) || |
585 | FT_FRAME_ENTER( entry->stringLength ) ) |
586 | goto get_apple_string_error; |
587 | |
588 | r = (FT_String*)result; |
589 | p = (FT_Char*)stream->cursor; |
590 | |
591 | for ( len = entry->stringLength; len > 0; len--, p++ ) |
592 | { |
593 | if ( char_type( *p ) ) |
594 | *r++ = *p; |
595 | else |
596 | { |
597 | if ( report_invalid_characters ) |
598 | FT_TRACE0(( "get_apple_string:" |
599 | " Character `%c' (0x%X) invalid in PS name string\n" , |
600 | *p, *p )); |
601 | continue; |
602 | } |
603 | } |
604 | *r = '\0'; |
605 | |
606 | FT_FRAME_EXIT(); |
607 | |
608 | if ( r != result ) |
609 | return result; |
610 | |
611 | get_apple_string_error: |
612 | FT_FREE( result ); |
613 | |
614 | entry->stringOffset = 0; |
615 | entry->stringLength = 0; |
616 | FT_FREE( entry->string ); |
617 | |
618 | return NULL; |
619 | } |
620 | |
621 | |
622 | FT_CALLBACK_DEF( FT_Bool ) |
623 | sfnt_get_name_id( TT_Face face, |
624 | FT_UShort id, |
625 | FT_Int *win, |
626 | FT_Int *apple ) |
627 | { |
628 | FT_Int n; |
629 | |
630 | |
631 | *win = -1; |
632 | *apple = -1; |
633 | |
634 | for ( n = 0; n < face->num_names; n++ ) |
635 | { |
636 | TT_Name name = face->name_table.names + n; |
637 | |
638 | |
639 | if ( name->nameID == id && name->stringLength > 0 ) |
640 | { |
641 | if ( IS_WIN( name ) && ( name->languageID == 0x409 || *win == -1 ) ) |
642 | *win = n; |
643 | |
644 | if ( IS_APPLE( name ) && ( name->languageID == 0 || *apple == -1 ) ) |
645 | *apple = n; |
646 | } |
647 | } |
648 | |
649 | return ( *win >= 0 ) || ( *apple >= 0 ); |
650 | } |
651 | |
652 | |
653 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
654 | |
655 | /* |
656 | The maximum length of an axis value descriptor. |
657 | |
658 | We need 65536 different values for the decimal fraction; this fits |
659 | nicely into five decimal places. Consequently, it consists of |
660 | |
661 | . the minus sign if the number is negative, |
662 | . up to five characters for the digits before the decimal point, |
663 | . the decimal point if there is a fractional part, and |
664 | . up to five characters for the digits after the decimal point. |
665 | |
666 | We also need one byte for the leading `_' character and up to four |
667 | bytes for the axis tag. |
668 | */ |
669 | #define MAX_VALUE_DESCRIPTOR_LEN ( 1 + 5 + 1 + 5 + 1 + 4 ) |
670 | |
671 | |
672 | /* the maximum length of PostScript font names */ |
673 | #define MAX_PS_NAME_LEN 127 |
674 | |
675 | |
676 | /* |
677 | * Find the shortest decimal representation of a 16.16 fixed-point |
678 | * number. The function fills `buf' with the result, returning a pointer |
679 | * to the position after the representation's last byte. |
680 | */ |
681 | |
682 | static char* |
683 | fixed2float( FT_Int fixed, |
684 | char* buf ) |
685 | { |
686 | char* p; |
687 | char* q; |
688 | char tmp[5]; |
689 | |
690 | FT_Int int_part; |
691 | FT_Int frac_part; |
692 | |
693 | FT_Int i; |
694 | |
695 | |
696 | p = buf; |
697 | |
698 | if ( fixed == 0 ) |
699 | { |
700 | *p++ = '0'; |
701 | return p; |
702 | } |
703 | |
704 | if ( fixed < 0 ) |
705 | { |
706 | *p++ = '-'; |
707 | fixed = NEG_INT( fixed ); |
708 | } |
709 | |
710 | int_part = ( fixed >> 16 ) & 0xFFFF; |
711 | frac_part = fixed & 0xFFFF; |
712 | |
713 | /* get digits of integer part (in reverse order) */ |
714 | q = tmp; |
715 | while ( int_part > 0 ) |
716 | { |
717 | *q++ = '0' + int_part % 10; |
718 | int_part /= 10; |
719 | } |
720 | |
721 | /* copy digits in correct order to buffer */ |
722 | while ( q > tmp ) |
723 | *p++ = *--q; |
724 | |
725 | if ( !frac_part ) |
726 | return p; |
727 | |
728 | /* save position of point */ |
729 | q = p; |
730 | *p++ = '.'; |
731 | |
732 | /* apply rounding */ |
733 | frac_part = frac_part * 10 + 5; |
734 | |
735 | /* get digits of fractional part */ |
736 | for ( i = 0; i < 5; i++ ) |
737 | { |
738 | *p++ = '0' + (char)( frac_part / 0x10000L ); |
739 | |
740 | frac_part %= 0x10000L; |
741 | if ( !frac_part ) |
742 | break; |
743 | |
744 | frac_part *= 10; |
745 | } |
746 | |
747 | /* |
748 | If the remainder stored in `frac_part' (after the last FOR loop) is |
749 | smaller than 34480*10, the resulting decimal value minus 0.00001 is |
750 | an equivalent representation of `fixed'. |
751 | |
752 | The above FOR loop always finds the larger of the two values; I |
753 | verified this by iterating over all possible fixed-point numbers. |
754 | |
755 | If the remainder is 17232*10, both values are equally good, and we |
756 | take the next even number (following IEEE 754's `round to nearest, |
757 | ties to even' rounding rule). |
758 | |
759 | If the remainder is smaller than 17232*10, the lower of the two |
760 | numbers is nearer to the exact result (values 17232 and 34480 were |
761 | also found by testing all possible fixed-point values). |
762 | |
763 | We use this to find a shorter decimal representation. If not ending |
764 | with digit zero, we take the representation with less error. |
765 | */ |
766 | p--; |
767 | if ( p - q == 5 ) /* five digits? */ |
768 | { |
769 | /* take the representation that has zero as the last digit */ |
770 | if ( frac_part < 34480 * 10 && |
771 | *p == '1' ) |
772 | *p = '0'; |
773 | |
774 | /* otherwise use the one with less error */ |
775 | else if ( frac_part == 17232 * 10 && |
776 | *p & 1 ) |
777 | *p -= 1; |
778 | |
779 | else if ( frac_part < 17232 * 10 && |
780 | *p != '0' ) |
781 | *p -= 1; |
782 | } |
783 | |
784 | /* remove trailing zeros */ |
785 | while ( *p == '0' ) |
786 | *p-- = '\0'; |
787 | |
788 | return p + 1; |
789 | } |
790 | |
791 | |
792 | static const char hexdigits[16] = |
793 | { |
794 | '0', '1', '2', '3', '4', '5', '6', '7', |
795 | '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' |
796 | }; |
797 | |
798 | |
799 | static const char* |
800 | sfnt_get_var_ps_name( TT_Face face ) |
801 | { |
802 | FT_Error error; |
803 | FT_Memory memory = face->root.memory; |
804 | |
805 | FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; |
806 | |
807 | FT_UInt num_coords; |
808 | FT_Fixed* coords; |
809 | FT_MM_Var* mm_var; |
810 | |
811 | FT_Int found, win, apple; |
812 | FT_UInt i, j; |
813 | |
814 | char* result = NULL; |
815 | char* p; |
816 | |
817 | |
818 | if ( !face->var_postscript_prefix ) |
819 | { |
820 | FT_UInt len; |
821 | |
822 | |
823 | /* check whether we have a Variations PostScript Name Prefix */ |
824 | found = sfnt_get_name_id( face, |
825 | TT_NAME_ID_VARIATIONS_PREFIX, |
826 | &win, |
827 | &apple ); |
828 | if ( !found ) |
829 | { |
830 | /* otherwise use the typographic family name */ |
831 | found = sfnt_get_name_id( face, |
832 | TT_NAME_ID_TYPOGRAPHIC_FAMILY, |
833 | &win, |
834 | &apple ); |
835 | } |
836 | |
837 | if ( !found ) |
838 | { |
839 | /* according to the 'name' documentation in the OpenType */ |
840 | /* specification the font family name is to be used if the */ |
841 | /* typographic family name is missing, so let's do that */ |
842 | found = sfnt_get_name_id( face, |
843 | TT_NAME_ID_FONT_FAMILY, |
844 | &win, |
845 | &apple ); |
846 | } |
847 | |
848 | if ( !found ) |
849 | { |
850 | FT_TRACE0(( "sfnt_get_var_ps_name:" |
851 | " Can't construct PS name prefix for font instances\n" )); |
852 | return NULL; |
853 | } |
854 | |
855 | /* prefer Windows entries over Apple */ |
856 | if ( win != -1 ) |
857 | result = get_win_string( face->root.memory, |
858 | face->name_table.stream, |
859 | face->name_table.names + win, |
860 | sfnt_is_alphanumeric, |
861 | 0 ); |
862 | if ( !result && apple != -1 ) |
863 | result = get_apple_string( face->root.memory, |
864 | face->name_table.stream, |
865 | face->name_table.names + apple, |
866 | sfnt_is_alphanumeric, |
867 | 0 ); |
868 | |
869 | if ( !result ) |
870 | { |
871 | FT_TRACE0(( "sfnt_get_var_ps_name:" |
872 | " No valid PS name prefix for font instances found\n" )); |
873 | /* XXX It probably makes sense to never let this fail */ |
874 | /* since an arbitrary prefix should work, too. */ |
875 | /* On the other hand, it is very unlikely that */ |
876 | /* we ever reach this code at all. */ |
877 | return NULL; |
878 | } |
879 | |
880 | len = ft_strlen( result ); |
881 | |
882 | /* sanitize if necessary; we reserve space for 36 bytes (a 128bit */ |
883 | /* checksum as a hex number, preceded by `-' and followed by three */ |
884 | /* ASCII dots, to be used if the constructed PS name would be too */ |
885 | /* long); this is also sufficient for a single instance */ |
886 | if ( len > MAX_PS_NAME_LEN - ( 1 + 32 + 3 ) ) |
887 | { |
888 | len = MAX_PS_NAME_LEN - ( 1 + 32 + 3 ); |
889 | result[len] = '\0'; |
890 | |
891 | FT_TRACE0(( "sfnt_get_var_ps_name:" |
892 | " Shortening variation PS name prefix\n" )); |
893 | FT_TRACE0(( " " |
894 | " to %d characters\n" , len )); |
895 | } |
896 | |
897 | face->var_postscript_prefix = result; |
898 | face->var_postscript_prefix_len = len; |
899 | } |
900 | |
901 | mm->get_var_blend( FT_FACE( face ), |
902 | &num_coords, |
903 | &coords, |
904 | NULL, |
905 | &mm_var ); |
906 | |
907 | if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) && |
908 | !FT_IS_VARIATION( FT_FACE( face ) ) ) |
909 | { |
910 | SFNT_Service sfnt = (SFNT_Service)face->sfnt; |
911 | |
912 | FT_Long instance = ( ( face->root.face_index & 0x7FFF0000L ) >> 16 ) - 1; |
913 | FT_UInt psid = mm_var->namedstyle[instance].psid; |
914 | |
915 | char* ps_name = NULL; |
916 | |
917 | |
918 | /* try first to load the name string with index `postScriptNameID' */ |
919 | if ( psid == 6 || |
920 | ( psid > 255 && psid < 32768 ) ) |
921 | (void)sfnt->get_name( face, (FT_UShort)psid, &ps_name ); |
922 | |
923 | if ( ps_name ) |
924 | { |
925 | result = ps_name; |
926 | p = result + ft_strlen( result ) + 1; |
927 | |
928 | goto check_length; |
929 | } |
930 | else |
931 | { |
932 | /* otherwise construct a name using `subfamilyNameID' */ |
933 | FT_UInt strid = mm_var->namedstyle[instance].strid; |
934 | |
935 | char* subfamily_name; |
936 | char* s; |
937 | |
938 | |
939 | (void)sfnt->get_name( face, (FT_UShort)strid, &subfamily_name ); |
940 | |
941 | if ( !subfamily_name ) |
942 | { |
943 | FT_TRACE1(( "sfnt_get_var_ps_name:" |
944 | " can't construct named instance PS name;\n" )); |
945 | FT_TRACE1(( " " |
946 | " trying to construct normal instance PS name\n" )); |
947 | goto construct_instance_name; |
948 | } |
949 | |
950 | /* after the prefix we have character `-' followed by the */ |
951 | /* subfamily name (using only characters a-z, A-Z, and 0-9) */ |
952 | if ( FT_QALLOC( result, face->var_postscript_prefix_len + |
953 | 1 + ft_strlen( subfamily_name ) + 1 ) ) |
954 | return NULL; |
955 | |
956 | ft_strcpy( result, face->var_postscript_prefix ); |
957 | |
958 | p = result + face->var_postscript_prefix_len; |
959 | *p++ = '-'; |
960 | |
961 | s = subfamily_name; |
962 | while ( *s ) |
963 | { |
964 | if ( ft_isalnum( *s ) ) |
965 | *p++ = *s; |
966 | s++; |
967 | } |
968 | *p++ = '\0'; |
969 | |
970 | FT_FREE( subfamily_name ); |
971 | } |
972 | } |
973 | else |
974 | { |
975 | FT_Var_Axis* axis; |
976 | |
977 | |
978 | construct_instance_name: |
979 | axis = mm_var->axis; |
980 | |
981 | if ( FT_QALLOC( result, |
982 | face->var_postscript_prefix_len + |
983 | num_coords * MAX_VALUE_DESCRIPTOR_LEN + 1 ) ) |
984 | return NULL; |
985 | |
986 | p = result; |
987 | |
988 | ft_strcpy( p, face->var_postscript_prefix ); |
989 | p += face->var_postscript_prefix_len; |
990 | |
991 | for ( i = 0; i < num_coords; i++, coords++, axis++ ) |
992 | { |
993 | char t; |
994 | |
995 | |
996 | /* omit axis value descriptor if it is identical */ |
997 | /* to the default axis value */ |
998 | if ( *coords == axis->def ) |
999 | continue; |
1000 | |
1001 | *p++ = '_'; |
1002 | p = fixed2float( *coords, p ); |
1003 | |
1004 | t = (char)( axis->tag >> 24 ); |
1005 | if ( t != ' ' && ft_isalnum( t ) ) |
1006 | *p++ = t; |
1007 | t = (char)( axis->tag >> 16 ); |
1008 | if ( t != ' ' && ft_isalnum( t ) ) |
1009 | *p++ = t; |
1010 | t = (char)( axis->tag >> 8 ); |
1011 | if ( t != ' ' && ft_isalnum( t ) ) |
1012 | *p++ = t; |
1013 | t = (char)axis->tag; |
1014 | if ( t != ' ' && ft_isalnum( t ) ) |
1015 | *p++ = t; |
1016 | } |
1017 | *p++ = '\0'; |
1018 | } |
1019 | |
1020 | check_length: |
1021 | if ( p - result > MAX_PS_NAME_LEN ) |
1022 | { |
1023 | /* the PS name is too long; replace the part after the prefix with */ |
1024 | /* a checksum; we use MurmurHash 3 with a hash length of 128 bit */ |
1025 | |
1026 | FT_UInt32 seed = 123456789; |
1027 | |
1028 | FT_UInt32 hash[4]; |
1029 | FT_UInt32* h; |
1030 | |
1031 | |
1032 | murmur_hash_3_128( result, p - result, seed, hash ); |
1033 | |
1034 | p = result + face->var_postscript_prefix_len; |
1035 | *p++ = '-'; |
1036 | |
1037 | /* we convert the hash value to hex digits from back to front */ |
1038 | p += 32 + 3; |
1039 | h = hash + 3; |
1040 | |
1041 | *p-- = '\0'; |
1042 | *p-- = '.'; |
1043 | *p-- = '.'; |
1044 | *p-- = '.'; |
1045 | |
1046 | for ( i = 0; i < 4; i++, h-- ) |
1047 | { |
1048 | FT_UInt32 v = *h; |
1049 | |
1050 | |
1051 | for ( j = 0; j < 8; j++ ) |
1052 | { |
1053 | *p-- = hexdigits[v & 0xF]; |
1054 | v >>= 4; |
1055 | } |
1056 | } |
1057 | } |
1058 | |
1059 | return result; |
1060 | } |
1061 | |
1062 | #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ |
1063 | |
1064 | |
1065 | FT_CALLBACK_DEF( const char* ) |
1066 | sfnt_get_ps_name( FT_Face face ) /* TT_Face */ |
1067 | { |
1068 | TT_Face ttface = (TT_Face)face; |
1069 | |
1070 | FT_Int found, win, apple; |
1071 | const char* result = NULL; |
1072 | |
1073 | |
1074 | if ( ttface->postscript_name ) |
1075 | return ttface->postscript_name; |
1076 | |
1077 | #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT |
1078 | if ( ttface->blend && |
1079 | ( FT_IS_NAMED_INSTANCE( face ) || |
1080 | FT_IS_VARIATION( face ) ) ) |
1081 | { |
1082 | ttface->postscript_name = sfnt_get_var_ps_name( ttface ); |
1083 | return ttface->postscript_name; |
1084 | } |
1085 | #endif |
1086 | |
1087 | /* scan the name table to see whether we have a Postscript name here, */ |
1088 | /* either in Macintosh or Windows platform encodings */ |
1089 | found = sfnt_get_name_id( ttface, TT_NAME_ID_PS_NAME, &win, &apple ); |
1090 | if ( !found ) |
1091 | return NULL; |
1092 | |
1093 | /* prefer Windows entries over Apple */ |
1094 | if ( win != -1 ) |
1095 | result = get_win_string( FT_FACE_MEMORY( face ), |
1096 | ttface->name_table.stream, |
1097 | ttface->name_table.names + win, |
1098 | sfnt_is_postscript, |
1099 | 1 ); |
1100 | if ( !result && apple != -1 ) |
1101 | result = get_apple_string( FT_FACE_MEMORY( face ), |
1102 | ttface->name_table.stream, |
1103 | ttface->name_table.names + apple, |
1104 | sfnt_is_postscript, |
1105 | 1 ); |
1106 | |
1107 | ttface->postscript_name = result; |
1108 | |
1109 | return result; |
1110 | } |
1111 | |
1112 | |
1113 | FT_DEFINE_SERVICE_PSFONTNAMEREC( |
1114 | sfnt_service_ps_name, |
1115 | |
1116 | sfnt_get_ps_name /* FT_PsName_GetFunc get_ps_font_name */ |
1117 | ) |
1118 | |
1119 | |
1120 | /* |
1121 | * TT CMAP INFO |
1122 | */ |
1123 | FT_DEFINE_SERVICE_TTCMAPSREC( |
1124 | tt_service_get_cmap_info, |
1125 | |
1126 | tt_get_cmap_info /* TT_CMap_Info_GetFunc get_cmap_info */ |
1127 | ) |
1128 | |
1129 | |
1130 | #ifdef TT_CONFIG_OPTION_BDF |
1131 | |
1132 | static FT_Error |
1133 | sfnt_get_charset_id( FT_Face face, |
1134 | const char* *acharset_encoding, |
1135 | const char* *acharset_registry ) |
1136 | { |
1137 | BDF_PropertyRec encoding, registry; |
1138 | FT_Error error; |
1139 | |
1140 | |
1141 | /* XXX: I don't know whether this is correct, since |
1142 | * tt_face_find_bdf_prop only returns something correct if we have |
1143 | * previously selected a size that is listed in the BDF table. |
1144 | * Should we change the BDF table format to include single offsets |
1145 | * for `CHARSET_REGISTRY' and `CHARSET_ENCODING'? |
1146 | */ |
1147 | error = tt_face_find_bdf_prop( face, "CHARSET_REGISTRY" , ®istry ); |
1148 | if ( !error ) |
1149 | { |
1150 | error = tt_face_find_bdf_prop( face, "CHARSET_ENCODING" , &encoding ); |
1151 | if ( !error ) |
1152 | { |
1153 | if ( registry.type == BDF_PROPERTY_TYPE_ATOM && |
1154 | encoding.type == BDF_PROPERTY_TYPE_ATOM ) |
1155 | { |
1156 | *acharset_encoding = encoding.u.atom; |
1157 | *acharset_registry = registry.u.atom; |
1158 | } |
1159 | else |
1160 | error = FT_THROW( Invalid_Argument ); |
1161 | } |
1162 | } |
1163 | |
1164 | return error; |
1165 | } |
1166 | |
1167 | |
1168 | FT_DEFINE_SERVICE_BDFRec( |
1169 | sfnt_service_bdf, |
1170 | |
1171 | sfnt_get_charset_id, /* FT_BDF_GetCharsetIdFunc get_charset_id */ |
1172 | tt_face_find_bdf_prop /* FT_BDF_GetPropertyFunc get_property */ |
1173 | ) |
1174 | |
1175 | |
1176 | #endif /* TT_CONFIG_OPTION_BDF */ |
1177 | |
1178 | |
1179 | /* |
1180 | * SERVICE LIST |
1181 | */ |
1182 | |
1183 | #if defined TT_CONFIG_OPTION_POSTSCRIPT_NAMES && defined TT_CONFIG_OPTION_BDF |
1184 | FT_DEFINE_SERVICEDESCREC5( |
1185 | sfnt_services, |
1186 | |
1187 | FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, |
1188 | FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, |
1189 | FT_SERVICE_ID_GLYPH_DICT, &sfnt_service_glyph_dict, |
1190 | FT_SERVICE_ID_BDF, &sfnt_service_bdf, |
1191 | FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) |
1192 | #elif defined TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
1193 | FT_DEFINE_SERVICEDESCREC4( |
1194 | sfnt_services, |
1195 | |
1196 | FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, |
1197 | FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, |
1198 | FT_SERVICE_ID_GLYPH_DICT, &sfnt_service_glyph_dict, |
1199 | FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) |
1200 | #elif defined TT_CONFIG_OPTION_BDF |
1201 | FT_DEFINE_SERVICEDESCREC4( |
1202 | sfnt_services, |
1203 | |
1204 | FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, |
1205 | FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, |
1206 | FT_SERVICE_ID_BDF, &sfnt_service_bdf, |
1207 | FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) |
1208 | #else |
1209 | FT_DEFINE_SERVICEDESCREC3( |
1210 | sfnt_services, |
1211 | |
1212 | FT_SERVICE_ID_SFNT_TABLE, &sfnt_service_sfnt_table, |
1213 | FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &sfnt_service_ps_name, |
1214 | FT_SERVICE_ID_TT_CMAP, &tt_service_get_cmap_info ) |
1215 | #endif |
1216 | |
1217 | |
1218 | FT_CALLBACK_DEF( FT_Module_Interface ) |
1219 | sfnt_get_interface( FT_Module module, |
1220 | const char* module_interface ) |
1221 | { |
1222 | FT_UNUSED( module ); |
1223 | |
1224 | return ft_service_list_lookup( sfnt_services, module_interface ); |
1225 | } |
1226 | |
1227 | |
1228 | #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
1229 | #define PUT_EMBEDDED_BITMAPS( a ) a |
1230 | #else |
1231 | #define PUT_EMBEDDED_BITMAPS( a ) NULL |
1232 | #endif |
1233 | |
1234 | #ifdef TT_CONFIG_OPTION_COLOR_LAYERS |
1235 | #define PUT_COLOR_LAYERS( a ) a |
1236 | #else |
1237 | #define PUT_COLOR_LAYERS( a ) NULL |
1238 | #endif |
1239 | |
1240 | #ifdef FT_CONFIG_OPTION_SVG |
1241 | #define PUT_SVG_SUPPORT( a ) a |
1242 | #else |
1243 | #define PUT_SVG_SUPPORT( a ) NULL |
1244 | #endif |
1245 | |
1246 | #define PUT_COLOR_LAYERS_V1( a ) PUT_COLOR_LAYERS( a ) |
1247 | |
1248 | #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
1249 | #define PUT_PS_NAMES( a ) a |
1250 | #else |
1251 | #define PUT_PS_NAMES( a ) NULL |
1252 | #endif |
1253 | |
1254 | FT_DEFINE_SFNT_INTERFACE( |
1255 | sfnt_interface, |
1256 | |
1257 | tt_face_goto_table, /* TT_Loader_GotoTableFunc goto_table */ |
1258 | |
1259 | sfnt_init_face, /* TT_Init_Face_Func init_face */ |
1260 | sfnt_load_face, /* TT_Load_Face_Func load_face */ |
1261 | sfnt_done_face, /* TT_Done_Face_Func done_face */ |
1262 | sfnt_get_interface, /* FT_Module_Requester get_interface */ |
1263 | |
1264 | tt_face_load_any, /* TT_Load_Any_Func load_any */ |
1265 | |
1266 | tt_face_load_head, /* TT_Load_Table_Func load_head */ |
1267 | tt_face_load_hhea, /* TT_Load_Metrics_Func load_hhea */ |
1268 | tt_face_load_cmap, /* TT_Load_Table_Func load_cmap */ |
1269 | tt_face_load_maxp, /* TT_Load_Table_Func load_maxp */ |
1270 | tt_face_load_os2, /* TT_Load_Table_Func load_os2 */ |
1271 | tt_face_load_post, /* TT_Load_Table_Func load_post */ |
1272 | |
1273 | tt_face_load_name, /* TT_Load_Table_Func load_name */ |
1274 | tt_face_free_name, /* TT_Free_Table_Func free_name */ |
1275 | |
1276 | tt_face_load_kern, /* TT_Load_Table_Func load_kern */ |
1277 | tt_face_load_gasp, /* TT_Load_Table_Func load_gasp */ |
1278 | tt_face_load_pclt, /* TT_Load_Table_Func load_init */ |
1279 | |
1280 | /* see `ttload.h' */ |
1281 | PUT_EMBEDDED_BITMAPS( tt_face_load_bhed ), |
1282 | /* TT_Load_Table_Func load_bhed */ |
1283 | PUT_EMBEDDED_BITMAPS( tt_face_load_sbit_image ), |
1284 | /* TT_Load_SBit_Image_Func load_sbit_image */ |
1285 | |
1286 | /* see `ttpost.h' */ |
1287 | PUT_PS_NAMES( tt_face_get_ps_name ), |
1288 | /* TT_Get_PS_Name_Func get_psname */ |
1289 | PUT_PS_NAMES( tt_face_free_ps_names ), |
1290 | /* TT_Free_Table_Func free_psnames */ |
1291 | |
1292 | /* since version 2.1.8 */ |
1293 | tt_face_get_kerning, /* TT_Face_GetKerningFunc get_kerning */ |
1294 | |
1295 | /* since version 2.2 */ |
1296 | tt_face_load_font_dir, /* TT_Load_Table_Func load_font_dir */ |
1297 | tt_face_load_hmtx, /* TT_Load_Metrics_Func load_hmtx */ |
1298 | |
1299 | /* see `ttsbit.h' and `sfnt.h' */ |
1300 | PUT_EMBEDDED_BITMAPS( tt_face_load_sbit ), |
1301 | /* TT_Load_Table_Func load_eblc */ |
1302 | PUT_EMBEDDED_BITMAPS( tt_face_free_sbit ), |
1303 | /* TT_Free_Table_Func free_eblc */ |
1304 | |
1305 | PUT_EMBEDDED_BITMAPS( tt_face_set_sbit_strike ), |
1306 | /* TT_Set_SBit_Strike_Func set_sbit_strike */ |
1307 | PUT_EMBEDDED_BITMAPS( tt_face_load_strike_metrics ), |
1308 | /* TT_Load_Strike_Metrics_Func load_strike_metrics */ |
1309 | |
1310 | PUT_COLOR_LAYERS( tt_face_load_cpal ), |
1311 | /* TT_Load_Table_Func load_cpal */ |
1312 | PUT_COLOR_LAYERS( tt_face_load_colr ), |
1313 | /* TT_Load_Table_Func load_colr */ |
1314 | PUT_COLOR_LAYERS( tt_face_free_cpal ), |
1315 | /* TT_Free_Table_Func free_cpal */ |
1316 | PUT_COLOR_LAYERS( tt_face_free_colr ), |
1317 | /* TT_Free_Table_Func free_colr */ |
1318 | PUT_COLOR_LAYERS( tt_face_palette_set ), |
1319 | /* TT_Set_Palette_Func set_palette */ |
1320 | PUT_COLOR_LAYERS( tt_face_get_colr_layer ), |
1321 | /* TT_Get_Colr_Layer_Func get_colr_layer */ |
1322 | |
1323 | PUT_COLOR_LAYERS_V1( tt_face_get_colr_glyph_paint ), |
1324 | /* TT_Get_Color_Glyph_Paint_Func get_colr_glyph_paint */ |
1325 | PUT_COLOR_LAYERS_V1( tt_face_get_color_glyph_clipbox ), |
1326 | /* TT_Get_Color_Glyph_ClipBox_Func get_clipbox */ |
1327 | PUT_COLOR_LAYERS_V1( tt_face_get_paint_layers ), |
1328 | /* TT_Get_Paint_Layers_Func get_paint_layers */ |
1329 | PUT_COLOR_LAYERS_V1( tt_face_get_colorline_stops ), |
1330 | /* TT_Get_Paint get_paint */ |
1331 | PUT_COLOR_LAYERS_V1( tt_face_get_paint ), |
1332 | /* TT_Get_Colorline_Stops_Func get_colorline_stops */ |
1333 | |
1334 | PUT_COLOR_LAYERS( tt_face_colr_blend_layer ), |
1335 | /* TT_Blend_Colr_Func colr_blend */ |
1336 | |
1337 | tt_face_get_metrics, /* TT_Get_Metrics_Func get_metrics */ |
1338 | |
1339 | tt_face_get_name, /* TT_Get_Name_Func get_name */ |
1340 | sfnt_get_name_id, /* TT_Get_Name_ID_Func get_name_id */ |
1341 | |
1342 | PUT_SVG_SUPPORT( tt_face_load_svg ), |
1343 | /* TT_Load_Table_Func load_svg */ |
1344 | PUT_SVG_SUPPORT( tt_face_free_svg ), |
1345 | /* TT_Free_Table_Func free_svg */ |
1346 | PUT_SVG_SUPPORT( tt_face_load_svg_doc ) |
1347 | /* TT_Load_Svg_Doc_Func load_svg_doc */ |
1348 | ) |
1349 | |
1350 | |
1351 | FT_DEFINE_MODULE( |
1352 | sfnt_module_class, |
1353 | |
1354 | 0, /* not a font driver or renderer */ |
1355 | sizeof ( FT_ModuleRec ), |
1356 | |
1357 | "sfnt" , /* driver name */ |
1358 | 0x10000L, /* driver version 1.0 */ |
1359 | 0x20000L, /* driver requires FreeType 2.0 or higher */ |
1360 | |
1361 | (const void*)&sfnt_interface, /* module specific interface */ |
1362 | |
1363 | NULL, /* FT_Module_Constructor module_init */ |
1364 | NULL, /* FT_Module_Destructor module_done */ |
1365 | sfnt_get_interface /* FT_Module_Requester get_interface */ |
1366 | ) |
1367 | |
1368 | |
1369 | /* END */ |
1370 | |