1 /****************************************************************************
2 *
3 * sfobjs.c
4 *
5 * SFNT object management (base).
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 "sfobjs.h"
20 #include "ttload.h"
21 #include "ttcmap.h"
22 #include "ttkern.h"
23 #include "sfwoff.h"
24 #include "sfwoff2.h"
25 #include <freetype/internal/sfnt.h>
26 #include <freetype/internal/ftdebug.h>
27 #include <freetype/ttnameid.h>
28 #include <freetype/tttags.h>
29 #include <freetype/internal/services/svpscmap.h>
30 #include <freetype/ftsnames.h>
31
32 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
33 #include <freetype/internal/services/svmm.h>
34 #include <freetype/internal/services/svmetric.h>
35 #endif
36
37 #include "sferrors.h"
38
39 #ifdef TT_CONFIG_OPTION_BDF
40 #include "ttbdf.h"
41 #endif
42
43
44 /**************************************************************************
45 *
46 * The macro FT_COMPONENT is used in trace mode. It is an implicit
47 * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log
48 * messages during execution.
49 */
50 #undef FT_COMPONENT
51 #define FT_COMPONENT sfobjs
52
53
54
55 /* convert a UTF-16 name entry to ASCII */
56 static FT_String*
57 tt_name_ascii_from_utf16( TT_Name entry,
58 FT_Memory memory )
59 {
60 FT_String* string = NULL;
61 FT_UInt len, code, n;
62 FT_Byte* read = (FT_Byte*)entry->string;
63 FT_Error error;
64
65
66 len = (FT_UInt)entry->stringLength / 2;
67
68 if ( FT_QNEW_ARRAY( string, len + 1 ) )
69 return NULL;
70
71 for ( n = 0; n < len; n++ )
72 {
73 code = FT_NEXT_USHORT( read );
74
75 if ( code == 0 )
76 break;
77
78 if ( code < 32 || code > 127 )
79 code = '?';
80
81 string[n] = (char)code;
82 }
83
84 string[n] = 0;
85
86 return string;
87 }
88
89
90 /* convert an Apple Roman or symbol name entry to ASCII */
91 static FT_String*
92 tt_name_ascii_from_other( TT_Name entry,
93 FT_Memory memory )
94 {
95 FT_String* string = NULL;
96 FT_UInt len, code, n;
97 FT_Byte* read = (FT_Byte*)entry->string;
98 FT_Error error;
99
100
101 len = (FT_UInt)entry->stringLength;
102
103 if ( FT_QNEW_ARRAY( string, len + 1 ) )
104 return NULL;
105
106 for ( n = 0; n < len; n++ )
107 {
108 code = *read++;
109
110 if ( code == 0 )
111 break;
112
113 if ( code < 32 || code > 127 )
114 code = '?';
115
116 string[n] = (char)code;
117 }
118
119 string[n] = 0;
120
121 return string;
122 }
123
124
125 typedef FT_String* (*TT_Name_ConvertFunc)( TT_Name entry,
126 FT_Memory memory );
127
128
129 /* documentation is in sfnt.h */
130
131 FT_LOCAL_DEF( FT_Error )
132 tt_face_get_name( TT_Face face,
133 FT_UShort nameid,
134 FT_String** name )
135 {
136 FT_Memory memory = face->root.memory;
137 FT_Error error = FT_Err_Ok;
138 FT_String* result = NULL;
139 FT_UShort n;
140 TT_Name rec;
141
142 FT_Int found_apple = -1;
143 FT_Int found_apple_roman = -1;
144 FT_Int found_apple_english = -1;
145 FT_Int found_win = -1;
146 FT_Int found_unicode = -1;
147
148 FT_Bool is_english = 0;
149
150 TT_Name_ConvertFunc convert;
151
152
153 FT_ASSERT( name );
154
155 rec = face->name_table.names;
156 for ( n = 0; n < face->num_names; n++, rec++ )
157 {
158 /* According to the OpenType 1.3 specification, only Microsoft or */
159 /* Apple platform IDs might be used in the `name' table. The */
160 /* `Unicode' platform is reserved for the `cmap' table, and the */
161 /* `ISO' one is deprecated. */
162 /* */
163 /* However, the Apple TrueType specification doesn't say the same */
164 /* thing and goes to suggest that all Unicode `name' table entries */
165 /* should be coded in UTF-16 (in big-endian format I suppose). */
166 /* */
167 if ( rec->nameID == nameid && rec->stringLength > 0 )
168 {
169 switch ( rec->platformID )
170 {
171 case TT_PLATFORM_APPLE_UNICODE:
172 case TT_PLATFORM_ISO:
173 /* there is `languageID' to check there. We should use this */
174 /* field only as a last solution when nothing else is */
175 /* available. */
176 /* */
177 found_unicode = n;
178 break;
179
180 case TT_PLATFORM_MACINTOSH:
181 /* This is a bit special because some fonts will use either */
182 /* an English language id, or a Roman encoding id, to indicate */
183 /* the English version of its font name. */
184 /* */
185 if ( rec->languageID == TT_MAC_LANGID_ENGLISH )
186 found_apple_english = n;
187 else if ( rec->encodingID == TT_MAC_ID_ROMAN )
188 found_apple_roman = n;
189 break;
190
191 case TT_PLATFORM_MICROSOFT:
192 /* we only take a non-English name when there is nothing */
193 /* else available in the font */
194 /* */
195 if ( found_win == -1 || ( rec->languageID & 0x3FF ) == 0x009 )
196 {
197 switch ( rec->encodingID )
198 {
199 case TT_MS_ID_SYMBOL_CS:
200 case TT_MS_ID_UNICODE_CS:
201 case TT_MS_ID_UCS_4:
202 is_english = FT_BOOL( ( rec->languageID & 0x3FF ) == 0x009 );
203 found_win = n;
204 break;
205
206 default:
207 ;
208 }
209 }
210 break;
211
212 default:
213 ;
214 }
215 }
216 }
217
218 found_apple = found_apple_roman;
219 if ( found_apple_english >= 0 )
220 found_apple = found_apple_english;
221
222 /* some fonts contain invalid Unicode or Macintosh formatted entries; */
223 /* we will thus favor names encoded in Windows formats if available */
224 /* (provided it is an English name) */
225 /* */
226 convert = NULL;
227 if ( found_win >= 0 && !( found_apple >= 0 && !is_english ) )
228 {
229 rec = face->name_table.names + found_win;
230 switch ( rec->encodingID )
231 {
232 /* all Unicode strings are encoded using UTF-16BE */
233 case TT_MS_ID_UNICODE_CS:
234 case TT_MS_ID_SYMBOL_CS:
235 convert = tt_name_ascii_from_utf16;
236 break;
237
238 case TT_MS_ID_UCS_4:
239 /* Apparently, if this value is found in a name table entry, it is */
240 /* documented as `full Unicode repertoire'. Experience with the */
241 /* MsGothic font shipped with Windows Vista shows that this really */
242 /* means UTF-16 encoded names (UCS-4 values are only used within */
243 /* charmaps). */
244 convert = tt_name_ascii_from_utf16;
245 break;
246
247 default:
248 ;
249 }
250 }
251 else if ( found_apple >= 0 )
252 {
253 rec = face->name_table.names + found_apple;
254 convert = tt_name_ascii_from_other;
255 }
256 else if ( found_unicode >= 0 )
257 {
258 rec = face->name_table.names + found_unicode;
259 convert = tt_name_ascii_from_utf16;
260 }
261
262 if ( rec && convert )
263 {
264 if ( !rec->string )
265 {
266 FT_Stream stream = face->name_table.stream;
267
268
269 if ( FT_QNEW_ARRAY ( rec->string, rec->stringLength ) ||
270 FT_STREAM_SEEK( rec->stringOffset ) ||
271 FT_STREAM_READ( rec->string, rec->stringLength ) )
272 {
273 FT_FREE( rec->string );
274 rec->stringLength = 0;
275 result = NULL;
276 goto Exit;
277 }
278 }
279
280 result = convert( rec, memory );
281 }
282
283 Exit:
284 *name = result;
285 return error;
286 }
287
288
289 static FT_Encoding
290 sfnt_find_encoding( int platform_id,
291 int encoding_id )
292 {
293 typedef struct TEncoding_
294 {
295 int platform_id;
296 int encoding_id;
297 FT_Encoding encoding;
298
299 } TEncoding;
300
301 static
302 const TEncoding tt_encodings[] =
303 {
304 { TT_PLATFORM_ISO, -1, FT_ENCODING_UNICODE },
305
306 { TT_PLATFORM_APPLE_UNICODE, -1, FT_ENCODING_UNICODE },
307
308 { TT_PLATFORM_MACINTOSH, TT_MAC_ID_ROMAN, FT_ENCODING_APPLE_ROMAN },
309
310 { TT_PLATFORM_MICROSOFT, TT_MS_ID_SYMBOL_CS, FT_ENCODING_MS_SYMBOL },
311 { TT_PLATFORM_MICROSOFT, TT_MS_ID_UCS_4, FT_ENCODING_UNICODE },
312 { TT_PLATFORM_MICROSOFT, TT_MS_ID_UNICODE_CS, FT_ENCODING_UNICODE },
313 { TT_PLATFORM_MICROSOFT, TT_MS_ID_SJIS, FT_ENCODING_SJIS },
314 { TT_PLATFORM_MICROSOFT, TT_MS_ID_PRC, FT_ENCODING_PRC },
315 { TT_PLATFORM_MICROSOFT, TT_MS_ID_BIG_5, FT_ENCODING_BIG5 },
316 { TT_PLATFORM_MICROSOFT, TT_MS_ID_WANSUNG, FT_ENCODING_WANSUNG },
317 { TT_PLATFORM_MICROSOFT, TT_MS_ID_JOHAB, FT_ENCODING_JOHAB }
318 };
319
320 const TEncoding *cur, *limit;
321
322
323 cur = tt_encodings;
324 limit = cur + sizeof ( tt_encodings ) / sizeof ( tt_encodings[0] );
325
326 for ( ; cur < limit; cur++ )
327 {
328 if ( cur->platform_id == platform_id )
329 {
330 if ( cur->encoding_id == encoding_id ||
331 cur->encoding_id == -1 )
332 return cur->encoding;
333 }
334 }
335
336 return FT_ENCODING_NONE;
337 }
338
339
340 /* Fill in face->ttc_header. If the font is not a TTC, it is */
341 /* synthesized into a TTC with one offset table. */
342 static FT_Error
343 sfnt_open_font( FT_Stream stream,
344 TT_Face face,
345 FT_Int* face_instance_index,
346 FT_Long* woff2_num_faces )
347 {
348 FT_Memory memory = stream->memory;
349 FT_Error error;
350 FT_ULong tag, offset;
351
352 static const FT_Frame_Field ttc_header_fields[] =
353 {
354 #undef FT_STRUCTURE
355 #define FT_STRUCTURE TTC_HeaderRec
356
357 FT_FRAME_START( 8 ),
358 FT_FRAME_LONG( version ),
359 FT_FRAME_LONG( count ), /* this is ULong in the specs */
360 FT_FRAME_END
361 };
362
363 #ifndef FT_CONFIG_OPTION_USE_BROTLI
364 FT_UNUSED( face_instance_index );
365 FT_UNUSED( woff2_num_faces );
366 #endif
367
368
369 face->ttc_header.tag = 0;
370 face->ttc_header.version = 0;
371 face->ttc_header.count = 0;
372
373 #if defined( FT_CONFIG_OPTION_USE_ZLIB ) || \
374 defined( FT_CONFIG_OPTION_USE_BROTLI )
375 retry:
376 #endif
377
378 offset = FT_STREAM_POS();
379
380 if ( FT_READ_ULONG( tag ) )
381 return error;
382
383 #ifdef FT_CONFIG_OPTION_USE_ZLIB
384 if ( tag == TTAG_wOFF )
385 {
386 FT_TRACE2(( "sfnt_open_font: file is a WOFF; synthesizing SFNT\n" ));
387
388 if ( FT_STREAM_SEEK( offset ) )
389 return error;
390
391 error = woff_open_font( stream, face );
392 if ( error )
393 return error;
394
395 /* Swap out stream and retry! */
396 stream = face->root.stream;
397 goto retry;
398 }
399 #endif
400
401 #ifdef FT_CONFIG_OPTION_USE_BROTLI
402 if ( tag == TTAG_wOF2 )
403 {
404 FT_TRACE2(( "sfnt_open_font: file is a WOFF2; synthesizing SFNT\n" ));
405
406 if ( FT_STREAM_SEEK( offset ) )
407 return error;
408
409 error = woff2_open_font( stream,
410 face,
411 face_instance_index,
412 woff2_num_faces );
413 if ( error )
414 return error;
415
416 /* Swap out stream and retry! */
417 stream = face->root.stream;
418 goto retry;
419 }
420 #endif
421
422 if ( tag != 0x00010000UL &&
423 tag != TTAG_ttcf &&
424 tag != TTAG_OTTO &&
425 tag != TTAG_true &&
426 tag != TTAG_typ1 &&
427 tag != TTAG_0xA5kbd &&
428 tag != TTAG_0xA5lst &&
429 tag != 0x00020000UL )
430 {
431 FT_TRACE2(( " not a font using the SFNT container format\n" ));
432 return FT_THROW( Unknown_File_Format );
433 }
434
435 face->ttc_header.tag = TTAG_ttcf;
436
437 if ( tag == TTAG_ttcf )
438 {
439 FT_Int n;
440
441
442 FT_TRACE3(( "sfnt_open_font: file is a collection\n" ));
443
444 if ( FT_STREAM_READ_FIELDS( ttc_header_fields, &face->ttc_header ) )
445 return error;
446
447 FT_TRACE3(( " with %ld subfonts\n",
448 face->ttc_header.count ));
449
450 if ( face->ttc_header.count == 0 )
451 return FT_THROW( Invalid_Table );
452
453 /* a rough size estimate: let's conservatively assume that there */
454 /* is just a single table info in each subfont header (12 + 16*1 = */
455 /* 28 bytes), thus we have (at least) `12 + 4*count' bytes for the */
456 /* size of the TTC header plus `28*count' bytes for all subfont */
457 /* headers */
458 if ( (FT_ULong)face->ttc_header.count > stream->size / ( 28 + 4 ) )
459 return FT_THROW( Array_Too_Large );
460
461 /* now read the offsets of each font in the file */
462 if ( FT_QNEW_ARRAY( face->ttc_header.offsets, face->ttc_header.count ) )
463 return error;
464
465 if ( FT_FRAME_ENTER( face->ttc_header.count * 4L ) )
466 return error;
467
468 for ( n = 0; n < face->ttc_header.count; n++ )
469 face->ttc_header.offsets[n] = FT_GET_ULONG();
470
471 FT_FRAME_EXIT();
472 }
473 else
474 {
475 FT_TRACE3(( "sfnt_open_font: synthesize TTC\n" ));
476
477 face->ttc_header.version = 1 << 16;
478 face->ttc_header.count = 1;
479
480 if ( FT_QNEW( face->ttc_header.offsets ) )
481 return error;
482
483 face->ttc_header.offsets[0] = offset;
484 }
485
486 return error;
487 }
488
489
490 FT_LOCAL_DEF( FT_Error )
491 sfnt_init_face( FT_Stream stream,
492 TT_Face face,
493 FT_Int face_instance_index,
494 FT_Int num_params,
495 FT_Parameter* params )
496 {
497 FT_Error error;
498 FT_Library library = face->root.driver->root.library;
499 SFNT_Service sfnt;
500 FT_Int face_index;
501 FT_Long woff2_num_faces = 0;
502
503
504 /* for now, parameters are unused */
505 FT_UNUSED( num_params );
506 FT_UNUSED( params );
507
508
509 sfnt = (SFNT_Service)face->sfnt;
510 if ( !sfnt )
511 {
512 sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
513 if ( !sfnt )
514 {
515 FT_ERROR(( "sfnt_init_face: cannot access `sfnt' module\n" ));
516 return FT_THROW( Missing_Module );
517 }
518
519 face->sfnt = sfnt;
520 face->goto_table = sfnt->goto_table;
521 }
522
523 FT_FACE_FIND_GLOBAL_SERVICE( face, face->psnames, POSTSCRIPT_CMAPS );
524
525 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
526 if ( !face->mm )
527 {
528 /* we want the MM interface from the `truetype' module only */
529 FT_Module tt_module = FT_Get_Module( library, "truetype" );
530
531
532 face->mm = ft_module_get_service( tt_module,
533 FT_SERVICE_ID_MULTI_MASTERS,
534 0 );
535 }
536
537 if ( !face->tt_var )
538 {
539 /* we want the metrics variations interface */
540 /* from the `truetype' module only */
541 FT_Module tt_module = FT_Get_Module( library, "truetype" );
542
543
544 face->tt_var = ft_module_get_service( tt_module,
545 FT_SERVICE_ID_METRICS_VARIATIONS,
546 0 );
547 }
548
549 if ( !face->face_var )
550 face->face_var = ft_module_get_service(
551 &face->root.driver->root,
552 FT_SERVICE_ID_METRICS_VARIATIONS,
553 0 );
554 #endif
555
556 FT_TRACE2(( "SFNT driver\n" ));
557
558 error = sfnt_open_font( stream,
559 face,
560 &face_instance_index,
561 &woff2_num_faces );
562 if ( error )
563 return error;
564
565 /* Stream may have changed in sfnt_open_font. */
566 stream = face->root.stream;
567
568 FT_TRACE2(( "sfnt_init_face: %p (index %d)\n",
569 (void *)face,
570 face_instance_index ));
571
572 face_index = FT_ABS( face_instance_index ) & 0xFFFF;
573
574 /* value -(N+1) requests information on index N */
575 if ( face_instance_index < 0 && face_index > 0 )
576 face_index--;
577
578 if ( face_index >= face->ttc_header.count )
579 {
580 if ( face_instance_index >= 0 )
581 return FT_THROW( Invalid_Argument );
582 else
583 face_index = 0;
584 }
585
586 if ( FT_STREAM_SEEK( face->ttc_header.offsets[face_index] ) )
587 return error;
588
589 /* check whether we have a valid TrueType file */
590 error = sfnt->load_font_dir( face, stream );
591 if ( error )
592 return error;
593
594 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
595 {
596 FT_Memory memory = face->root.memory;
597
598 FT_ULong fvar_len;
599
600 FT_ULong version;
601 FT_ULong offset;
602
603 FT_UShort num_axes;
604 FT_UShort axis_size;
605 FT_UShort num_instances;
606 FT_UShort instance_size;
607
608 FT_Int instance_index;
609
610 FT_Byte* default_values = NULL;
611 FT_Byte* instance_values = NULL;
612
613
614 instance_index = FT_ABS( face_instance_index ) >> 16;
615
616 /* test whether current face is a GX font with named instances */
617 if ( face->goto_table( face, TTAG_fvar, stream, &fvar_len ) ||
618 fvar_len < 20 ||
619 FT_READ_ULONG( version ) ||
620 FT_READ_USHORT( offset ) ||
621 FT_STREAM_SKIP( 2 ) /* reserved */ ||
622 FT_READ_USHORT( num_axes ) ||
623 FT_READ_USHORT( axis_size ) ||
624 FT_READ_USHORT( num_instances ) ||
625 FT_READ_USHORT( instance_size ) )
626 {
627 version = 0;
628 offset = 0;
629 num_axes = 0;
630 axis_size = 0;
631 num_instances = 0;
632 instance_size = 0;
633 }
634
635 /* check that the data is bound by the table length */
636 if ( version != 0x00010000UL ||
637 axis_size != 20 ||
638 num_axes == 0 ||
639 /* `num_axes' limit implied by 16-bit `instance_size' */
640 num_axes > 0x3FFE ||
641 !( instance_size == 4 + 4 * num_axes ||
642 instance_size == 6 + 4 * num_axes ) ||
643 /* `num_instances' limit implied by limited range of name IDs */
644 num_instances > 0x7EFF ||
645 offset +
646 axis_size * num_axes +
647 instance_size * num_instances > fvar_len )
648 num_instances = 0;
649 else
650 face->variation_support |= TT_FACE_FLAG_VAR_FVAR;
651
652 /*
653 * As documented in the OpenType specification, an entry for the
654 * default instance may be omitted in the named instance table. In
655 * particular this means that even if there is no named instance
656 * table in the font we actually do have a named instance, namely the
657 * default instance.
658 *
659 * For consistency, we always want the default instance in our list
660 * of named instances. If it is missing, we try to synthesize it
661 * later on. Here, we have to adjust `num_instances' accordingly.
662 */
663
664 if ( ( face->variation_support & TT_FACE_FLAG_VAR_FVAR ) &&
665 !( FT_QALLOC( default_values, num_axes * 4 ) ||
666 FT_QALLOC( instance_values, num_axes * 4 ) ) )
667 {
668 /* the current stream position is 16 bytes after the table start */
669 FT_ULong array_start = FT_STREAM_POS() - 16 + offset;
670 FT_ULong default_value_offset, instance_offset;
671
672 FT_Byte* p;
673 FT_UInt i;
674
675
676 default_value_offset = array_start + 8;
677 p = default_values;
678
679 for ( i = 0; i < num_axes; i++ )
680 {
681 (void)FT_STREAM_READ_AT( default_value_offset, p, 4 );
682
683 default_value_offset += axis_size;
684 p += 4;
685 }
686
687 instance_offset = array_start + axis_size * num_axes + 4;
688
689 for ( i = 0; i < num_instances; i++ )
690 {
691 (void)FT_STREAM_READ_AT( instance_offset,
692 instance_values,
693 num_axes * 4 );
694
695 if ( !ft_memcmp( default_values, instance_values, num_axes * 4 ) )
696 break;
697
698 instance_offset += instance_size;
699 }
700
701 /* named instance indices start with value 1 */
702 face->var_default_named_instance = i + 1;
703
704 if ( i == num_instances )
705 {
706 /* no default instance in named instance table; */
707 /* we thus have to synthesize it */
708 num_instances++;
709 }
710 }
711
712 FT_FREE( default_values );
713 FT_FREE( instance_values );
714
715 /* we don't support Multiple Master CFFs yet; */
716 /* note that `glyf' or `CFF2' have precedence */
717 if ( face->goto_table( face, TTAG_glyf, stream, 0 ) &&
718 face->goto_table( face, TTAG_CFF2, stream, 0 ) &&
719 !face->goto_table( face, TTAG_CFF, stream, 0 ) )
720 num_instances = 0;
721
722 /* instance indices in `face_instance_index' start with index 1, */
723 /* thus `>' and not `>=' */
724 if ( instance_index > num_instances )
725 {
726 if ( face_instance_index >= 0 )
727 return FT_THROW( Invalid_Argument );
728 else
729 num_instances = 0;
730 }
731
732 face->root.style_flags = (FT_Long)num_instances << 16;
733 }
734 #endif
735
736 face->root.num_faces = face->ttc_header.count;
737 face->root.face_index = face_instance_index;
738
739 /* `num_faces' for a WOFF2 needs to be handled separately. */
740 if ( woff2_num_faces )
741 face->root.num_faces = woff2_num_faces;
742
743 return error;
744 }
745
746
747 #define LOAD_( x ) \
748 do \
749 { \
750 FT_TRACE2(( "`" #x "' " )); \
751 FT_TRACE3(( "-->\n" )); \
752 \
753 error = sfnt->load_ ## x( face, stream ); \
754 \
755 FT_TRACE2(( "%s\n", ( !error ) \
756 ? "loaded" \
757 : FT_ERR_EQ( error, Table_Missing ) \
758 ? "missing" \
759 : "failed to load" )); \
760 FT_TRACE3(( "\n" )); \
761 } while ( 0 )
762
763 #define LOADM_( x, vertical ) \
764 do \
765 { \
766 FT_TRACE2(( "`%s" #x "' ", \
767 vertical ? "vertical " : "" )); \
768 FT_TRACE3(( "-->\n" )); \
769 \
770 error = sfnt->load_ ## x( face, stream, vertical ); \
771 \
772 FT_TRACE2(( "%s\n", ( !error ) \
773 ? "loaded" \
774 : FT_ERR_EQ( error, Table_Missing ) \
775 ? "missing" \
776 : "failed to load" )); \
777 FT_TRACE3(( "\n" )); \
778 } while ( 0 )
779
780 #define GET_NAME( id, field ) \
781 do \
782 { \
783 error = tt_face_get_name( face, TT_NAME_ID_ ## id, field ); \
784 if ( error ) \
785 goto Exit; \
786 } while ( 0 )
787
788
789 FT_LOCAL_DEF( FT_Error )
790 sfnt_load_face( FT_Stream stream,
791 TT_Face face,
792 FT_Int face_instance_index,
793 FT_Int num_params,
794 FT_Parameter* params )
795 {
796 FT_Error error;
797 #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
798 FT_Error psnames_error;
799 #endif
800
801 FT_Bool has_outline;
802 FT_Bool is_apple_sbit;
803
804 FT_Bool has_CBLC;
805 FT_Bool has_CBDT;
806 FT_Bool has_EBLC;
807 FT_Bool has_bloc;
808 FT_Bool has_sbix;
809
810 FT_Bool ignore_typographic_family = FALSE;
811 FT_Bool ignore_typographic_subfamily = FALSE;
812 FT_Bool ignore_sbix = FALSE;
813
814 SFNT_Service sfnt = (SFNT_Service)face->sfnt;
815
816 FT_UNUSED( face_instance_index );
817
818
819 /* Check parameters */
820
821 {
822 FT_Int i;
823
824
825 for ( i = 0; i < num_params; i++ )
826 {
827 if ( params[i].tag == FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY )
828 ignore_typographic_family = TRUE;
829 else if ( params[i].tag == FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY )
830 ignore_typographic_subfamily = TRUE;
831 else if ( params[i].tag == FT_PARAM_TAG_IGNORE_SBIX )
832 ignore_sbix = TRUE;
833 }
834 }
835
836 /* Load tables */
837
838 /* We now support two SFNT-based bitmapped font formats. They */
839 /* are recognized easily as they do not include a `glyf' */
840 /* table. */
841 /* */
842 /* The first format comes from Apple, and uses a table named */
843 /* `bhed' instead of `head' to store the font header (using */
844 /* the same format). It also doesn't include horizontal and */
845 /* vertical metrics tables (i.e. `hhea' and `vhea' tables are */
846 /* missing). */
847 /* */
848 /* The other format comes from Microsoft, and is used with */
849 /* WinCE/PocketPC. It looks like a standard TTF, except that */
850 /* it doesn't contain outlines. */
851 /* */
852
853 FT_TRACE2(( "sfnt_load_face: %p\n", (void *)face ));
854 FT_TRACE2(( "\n" ));
855
856 /* do we have outlines in there? */
857 #ifdef FT_CONFIG_OPTION_INCREMENTAL
858 has_outline = FT_BOOL( face->root.internal->incremental_interface ||
859 tt_face_lookup_table( face, TTAG_glyf ) ||
860 tt_face_lookup_table( face, TTAG_CFF ) ||
861 tt_face_lookup_table( face, TTAG_CFF2 ) );
862 #else
863 has_outline = FT_BOOL( tt_face_lookup_table( face, TTAG_glyf ) ||
864 tt_face_lookup_table( face, TTAG_CFF ) ||
865 tt_face_lookup_table( face, TTAG_CFF2 ) );
866 #endif
867
868 /* check which sbit formats are present */
869 has_CBLC = !face->goto_table( face, TTAG_CBLC, stream, 0 );
870 has_CBDT = !face->goto_table( face, TTAG_CBDT, stream, 0 );
871 has_EBLC = !face->goto_table( face, TTAG_EBLC, stream, 0 );
872 has_bloc = !face->goto_table( face, TTAG_bloc, stream, 0 );
873 has_sbix = !face->goto_table( face, TTAG_sbix, stream, 0 );
874
875 is_apple_sbit = FALSE;
876
877 if ( ignore_sbix )
878 has_sbix = FALSE;
879
880 /* if this font doesn't contain outlines, we try to load */
881 /* a `bhed' table */
882 if ( !has_outline && sfnt->load_bhed )
883 {
884 LOAD_( bhed );
885 is_apple_sbit = FT_BOOL( !error );
886 }
887
888 /* load the font header (`head' table) if this isn't an Apple */
889 /* sbit font file */
890 if ( !is_apple_sbit || has_sbix )
891 {
892 LOAD_( head );
893 if ( error )
894 goto Exit;
895 }
896
897 /* Ignore outlines for CBLC/CBDT fonts. */
898 if ( has_CBLC || has_CBDT )
899 has_outline = FALSE;
900
901 /* OpenType 1.8.2 introduced limits to this value; */
902 /* however, they make sense for older SFNT fonts also */
903 if ( face->header.Units_Per_EM < 16 ||
904 face->header.Units_Per_EM > 16384 )
905 {
906 error = FT_THROW( Invalid_Table );
907
908 goto Exit;
909 }
910
911 /* the following tables are often not present in embedded TrueType */
912 /* fonts within PDF documents, so don't check for them. */
913 LOAD_( maxp );
914 LOAD_( cmap );
915
916 /* the following tables are optional in PCL fonts -- */
917 /* don't check for errors */
918 LOAD_( name );
919 LOAD_( post );
920
921 #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
922 psnames_error = error;
923 #endif
924
925 /* do not load the metrics headers and tables if this is an Apple */
926 /* sbit font file */
927 if ( !is_apple_sbit )
928 {
929 /* load the `hhea' and `hmtx' tables */
930 LOADM_( hhea, 0 );
931 if ( !error )
932 {
933 LOADM_( hmtx, 0 );
934 if ( FT_ERR_EQ( error, Table_Missing ) )
935 {
936 error = FT_THROW( Hmtx_Table_Missing );
937
938 #ifdef FT_CONFIG_OPTION_INCREMENTAL
939 /* If this is an incrementally loaded font and there are */
940 /* overriding metrics, tolerate a missing `hmtx' table. */
941 if ( face->root.internal->incremental_interface &&
942 face->root.internal->incremental_interface->funcs->
943 get_glyph_metrics )
944 {
945 face->horizontal.number_Of_HMetrics = 0;
946 error = FT_Err_Ok;
947 }
948 #endif
949 }
950 }
951 else if ( FT_ERR_EQ( error, Table_Missing ) )
952 {
953 /* No `hhea' table necessary for SFNT Mac fonts. */
954 if ( face->format_tag == TTAG_true )
955 {
956 FT_TRACE2(( "This is an SFNT Mac font.\n" ));
957
958 has_outline = 0;
959 error = FT_Err_Ok;
960 }
961 else
962 {
963 error = FT_THROW( Horiz_Header_Missing );
964
965 #ifdef FT_CONFIG_OPTION_INCREMENTAL
966 /* If this is an incrementally loaded font and there are */
967 /* overriding metrics, tolerate a missing `hhea' table. */
968 if ( face->root.internal->incremental_interface &&
969 face->root.internal->incremental_interface->funcs->
970 get_glyph_metrics )
971 {
972 face->horizontal.number_Of_HMetrics = 0;
973 error = FT_Err_Ok;
974 }
975 #endif
976
977 }
978 }
979
980 if ( error )
981 goto Exit;
982
983 /* try to load the `vhea' and `vmtx' tables */
984 LOADM_( hhea, 1 );
985 if ( !error )
986 {
987 LOADM_( hmtx, 1 );
988 if ( !error )
989 face->vertical_info = 1;
990 }
991
992 if ( error && FT_ERR_NEQ( error, Table_Missing ) )
993 goto Exit;
994
995 LOAD_( os2 );
996 if ( error )
997 {
998 /* we treat the table as missing if there are any errors */
999 face->os2.version = 0xFFFFU;
1000 }
1001 }
1002
1003 /* the optional tables */
1004
1005 /* embedded bitmap support */
1006 /* TODO: Replace this clumsy check for all possible sbit tables */
1007 /* with something better (for example, by passing a parameter */
1008 /* to suppress 'sbix' loading). */
1009 if ( sfnt->load_eblc &&
1010 ( has_CBLC || has_EBLC || has_bloc || has_sbix ) )
1011 LOAD_( eblc );
1012
1013 /* colored glyph support */
1014 if ( sfnt->load_cpal )
1015 {
1016 LOAD_( cpal );
1017 LOAD_( colr );
1018 }
1019
1020 /* OpenType-SVG glyph support */
1021 if ( sfnt->load_svg )
1022 LOAD_( svg );
1023
1024 /* consider the pclt, kerning, and gasp tables as optional */
1025 LOAD_( pclt );
1026 LOAD_( gasp );
1027 LOAD_( kern );
1028
1029 face->root.num_glyphs = face->max_profile.numGlyphs;
1030
1031 /* Bit 8 of the `fsSelection' field in the `OS/2' table denotes */
1032 /* a WWS-only font face. `WWS' stands for `weight', width', and */
1033 /* `slope', a term used by Microsoft's Windows Presentation */
1034 /* Foundation (WPF). This flag has been introduced in version */
1035 /* 1.5 of the OpenType specification (May 2008). */
1036
1037 face->root.family_name = NULL;
1038 face->root.style_name = NULL;
1039 if ( face->os2.version != 0xFFFFU && face->os2.fsSelection & 256 )
1040 {
1041 if ( !ignore_typographic_family )
1042 GET_NAME( TYPOGRAPHIC_FAMILY, &face->root.family_name );
1043 if ( !face->root.family_name )
1044 GET_NAME( FONT_FAMILY, &face->root.family_name );
1045
1046 if ( !ignore_typographic_subfamily )
1047 GET_NAME( TYPOGRAPHIC_SUBFAMILY, &face->root.style_name );
1048 if ( !face->root.style_name )
1049 GET_NAME( FONT_SUBFAMILY, &face->root.style_name );
1050 }
1051 else
1052 {
1053 GET_NAME( WWS_FAMILY, &face->root.family_name );
1054 if ( !face->root.family_name && !ignore_typographic_family )
1055 GET_NAME( TYPOGRAPHIC_FAMILY, &face->root.family_name );
1056 if ( !face->root.family_name )
1057 GET_NAME( FONT_FAMILY, &face->root.family_name );
1058
1059 GET_NAME( WWS_SUBFAMILY, &face->root.style_name );
1060 if ( !face->root.style_name && !ignore_typographic_subfamily )
1061 GET_NAME( TYPOGRAPHIC_SUBFAMILY, &face->root.style_name );
1062 if ( !face->root.style_name )
1063 GET_NAME( FONT_SUBFAMILY, &face->root.style_name );
1064 }
1065
1066 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
1067 {
1068 FT_Memory memory = face->root.memory;
1069
1070
1071 if ( FT_STRDUP( face->non_var_style_name, face->root.style_name ) )
1072 goto Exit;
1073 }
1074 #endif
1075
1076 /* now set up root fields */
1077 {
1078 FT_Face root = &face->root;
1079 FT_Long flags = root->face_flags;
1080
1081
1082 /**********************************************************************
1083 *
1084 * Compute face flags.
1085 */
1086 if ( face->sbit_table_type == TT_SBIT_TABLE_TYPE_CBLC ||
1087 face->sbit_table_type == TT_SBIT_TABLE_TYPE_SBIX ||
1088 face->colr ||
1089 face->svg )
1090 flags |= FT_FACE_FLAG_COLOR; /* color glyphs */
1091
1092 if ( has_outline == TRUE )
1093 {
1094 /* by default (and for backward compatibility) we handle */
1095 /* fonts with an 'sbix' table as bitmap-only */
1096 if ( has_sbix )
1097 flags |= FT_FACE_FLAG_SBIX; /* with 'sbix' bitmaps */
1098 else
1099 flags |= FT_FACE_FLAG_SCALABLE; /* scalable outlines */
1100 }
1101
1102 /* The sfnt driver only supports bitmap fonts natively, thus we */
1103 /* don't set FT_FACE_FLAG_HINTER. */
1104 flags |= FT_FACE_FLAG_SFNT | /* SFNT file format */
1105 FT_FACE_FLAG_HORIZONTAL; /* horizontal data */
1106
1107 #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES
1108 if ( !psnames_error &&
1109 face->postscript.FormatType != 0x00030000L )
1110 flags |= FT_FACE_FLAG_GLYPH_NAMES;
1111 #endif
1112
1113 /* fixed width font? */
1114 if ( face->postscript.isFixedPitch )
1115 flags |= FT_FACE_FLAG_FIXED_WIDTH;
1116
1117 /* vertical information? */
1118 if ( face->vertical_info )
1119 flags |= FT_FACE_FLAG_VERTICAL;
1120
1121 /* kerning available ? */
1122 if ( TT_FACE_HAS_KERNING( face ) )
1123 flags |= FT_FACE_FLAG_KERNING;
1124
1125 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
1126 /* Don't bother to load the tables unless somebody asks for them. */
1127 /* No need to do work which will (probably) not be used. */
1128 if ( face->variation_support & TT_FACE_FLAG_VAR_FVAR )
1129 flags |= FT_FACE_FLAG_MULTIPLE_MASTERS;
1130 #endif
1131
1132 root->face_flags = flags;
1133
1134 /**********************************************************************
1135 *
1136 * Compute style flags.
1137 */
1138
1139 flags = 0;
1140 if ( has_outline == TRUE && face->os2.version != 0xFFFFU )
1141 {
1142 /* We have an OS/2 table; use the `fsSelection' field. Bit 9 */
1143 /* indicates an oblique font face. This flag has been */
1144 /* introduced in version 1.5 of the OpenType specification. */
1145
1146 if ( face->os2.fsSelection & 512 ) /* bit 9 */
1147 flags |= FT_STYLE_FLAG_ITALIC;
1148 else if ( face->os2.fsSelection & 1 ) /* bit 0 */
1149 flags |= FT_STYLE_FLAG_ITALIC;
1150
1151 if ( face->os2.fsSelection & 32 ) /* bit 5 */
1152 flags |= FT_STYLE_FLAG_BOLD;
1153 }
1154 else
1155 {
1156 /* this is an old Mac font, use the header field */
1157
1158 if ( face->header.Mac_Style & 1 )
1159 flags |= FT_STYLE_FLAG_BOLD;
1160
1161 if ( face->header.Mac_Style & 2 )
1162 flags |= FT_STYLE_FLAG_ITALIC;
1163 }
1164
1165 root->style_flags |= flags;
1166
1167 /**********************************************************************
1168 *
1169 * Polish the charmaps.
1170 *
1171 * Try to set the charmap encoding according to the platform &
1172 * encoding ID of each charmap. Emulate Unicode charmap if one
1173 * is missing.
1174 */
1175
1176 tt_face_build_cmaps( face ); /* ignore errors */
1177
1178
1179 /* set the encoding fields */
1180 {
1181 FT_Int m;
1182 #ifdef FT_CONFIG_OPTION_POSTSCRIPT_NAMES
1183 FT_Bool has_unicode = FALSE;
1184 #endif
1185
1186
1187 for ( m = 0; m < root->num_charmaps; m++ )
1188 {
1189 FT_CharMap charmap = root->charmaps[m];
1190
1191
1192 charmap->encoding = sfnt_find_encoding( charmap->platform_id,
1193 charmap->encoding_id );
1194
1195 #ifdef FT_CONFIG_OPTION_POSTSCRIPT_NAMES
1196
1197 if ( charmap->encoding == FT_ENCODING_UNICODE ||
1198 charmap->encoding == FT_ENCODING_MS_SYMBOL ) /* PUA */
1199 has_unicode = TRUE;
1200 }
1201
1202 /* synthesize Unicode charmap if one is missing */
1203 if ( !has_unicode &&
1204 root->face_flags & FT_FACE_FLAG_GLYPH_NAMES )
1205 {
1206 FT_CharMapRec cmaprec;
1207
1208
1209 cmaprec.face = root;
1210 cmaprec.platform_id = TT_PLATFORM_MICROSOFT;
1211 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS;
1212 cmaprec.encoding = FT_ENCODING_UNICODE;
1213
1214
1215 error = FT_CMap_New( (FT_CMap_Class)&tt_cmap_unicode_class_rec,
1216 NULL, &cmaprec, NULL );
1217 if ( error &&
1218 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) &&
1219 FT_ERR_NEQ( error, Unimplemented_Feature ) )
1220 goto Exit;
1221 error = FT_Err_Ok;
1222
1223 #endif /* FT_CONFIG_OPTION_POSTSCRIPT_NAMES */
1224
1225 }
1226 }
1227
1228 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
1229
1230 /*
1231 * Now allocate the root array of FT_Bitmap_Size records and
1232 * populate them. Unfortunately, it isn't possible to indicate bit
1233 * depths in the FT_Bitmap_Size record. This is a design error.
1234 */
1235 {
1236 FT_UInt count;
1237
1238
1239 count = face->sbit_num_strikes;
1240
1241 if ( count > 0 )
1242 {
1243 FT_Memory memory = face->root.memory;
1244 FT_UShort em_size = face->header.Units_Per_EM;
1245 FT_Short avgwidth = face->os2.xAvgCharWidth;
1246 FT_Size_Metrics metrics;
1247
1248 FT_UInt* sbit_strike_map = NULL;
1249 FT_UInt strike_idx, bsize_idx;
1250
1251
1252 if ( em_size == 0 || face->os2.version == 0xFFFFU )
1253 {
1254 avgwidth = 1;
1255 em_size = 1;
1256 }
1257
1258 /* to avoid invalid strike data in the `available_sizes' field */
1259 /* of `FT_Face', we map `available_sizes' indices to strike */
1260 /* indices */
1261 if ( FT_NEW_ARRAY( root->available_sizes, count ) ||
1262 FT_QNEW_ARRAY( sbit_strike_map, count ) )
1263 goto Exit;
1264
1265 bsize_idx = 0;
1266 for ( strike_idx = 0; strike_idx < count; strike_idx++ )
1267 {
1268 FT_Bitmap_Size* bsize = root->available_sizes + bsize_idx;
1269
1270
1271 error = sfnt->load_strike_metrics( face, strike_idx, &metrics );
1272 if ( error )
1273 continue;
1274
1275 bsize->height = (FT_Short)( metrics.height >> 6 );
1276 bsize->width = (FT_Short)(
1277 ( avgwidth * metrics.x_ppem + em_size / 2 ) / em_size );
1278
1279 bsize->x_ppem = metrics.x_ppem << 6;
1280 bsize->y_ppem = metrics.y_ppem << 6;
1281
1282 /* assume 72dpi */
1283 bsize->size = metrics.y_ppem << 6;
1284
1285 /* only use strikes with valid PPEM values */
1286 if ( bsize->x_ppem && bsize->y_ppem )
1287 sbit_strike_map[bsize_idx++] = strike_idx;
1288 }
1289
1290 /* reduce array size to the actually used elements */
1291 FT_MEM_QRENEW_ARRAY( sbit_strike_map, count, bsize_idx );
1292
1293 /* from now on, all strike indices are mapped */
1294 /* using `sbit_strike_map' */
1295 if ( bsize_idx )
1296 {
1297 face->sbit_strike_map = sbit_strike_map;
1298
1299 root->face_flags |= FT_FACE_FLAG_FIXED_SIZES;
1300 root->num_fixed_sizes = (FT_Int)bsize_idx;
1301 }
1302 }
1303 }
1304
1305 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
1306
1307 /* a font with no bitmaps and no outlines is scalable; */
1308 /* it has only empty glyphs then */
1309 if ( !FT_HAS_FIXED_SIZES( root ) && !FT_IS_SCALABLE( root ) )
1310 root->face_flags |= FT_FACE_FLAG_SCALABLE;
1311
1312
1313 /**********************************************************************
1314 *
1315 * Set up metrics.
1316 */
1317 if ( FT_IS_SCALABLE( root ) ||
1318 FT_HAS_SBIX( root ) )
1319 {
1320 /* XXX What about if outline header is missing */
1321 /* (e.g. sfnt wrapped bitmap)? */
1322 root->bbox.xMin = face->header.xMin;
1323 root->bbox.yMin = face->header.yMin;
1324 root->bbox.xMax = face->header.xMax;
1325 root->bbox.yMax = face->header.yMax;
1326 root->units_per_EM = face->header.Units_Per_EM;
1327
1328
1329 /*
1330 * Computing the ascender/descender/height is tricky.
1331 *
1332 * The OpenType specification v1.8.3 says:
1333 *
1334 * [OS/2's] sTypoAscender, sTypoDescender and sTypoLineGap fields
1335 * are intended to allow applications to lay out documents in a
1336 * typographically-correct and portable fashion.
1337 *
1338 * This is somewhat at odds with the decades of backwards
1339 * compatibility, operating systems and applications doing whatever
1340 * they want, not to mention broken fonts.
1341 *
1342 * Not all fonts have an OS/2 table; in this case, we take the values
1343 * in the horizontal header, although there is nothing stopping the
1344 * values from being unreliable. Even with a OS/2 table, certain fonts
1345 * set the sTypoAscender, sTypoDescender and sTypoLineGap fields to 0
1346 * and instead correctly set usWinAscent and usWinDescent.
1347 *
1348 * As an example, Arial Narrow is shipped as four files ARIALN.TTF,
1349 * ARIALNI.TTF, ARIALNB.TTF and ARIALNBI.TTF. Strangely, all fonts have
1350 * the same values in their sTypo* fields, except ARIALNB.ttf which
1351 * sets them to 0. All of them have different usWinAscent/Descent
1352 * values. The OS/2 table therefore cannot be trusted for computing the
1353 * text height reliably.
1354 *
1355 * As a compromise, do the following:
1356 *
1357 * 1. If the OS/2 table exists and the fsSelection bit 7 is set
1358 * (USE_TYPO_METRICS), trust the font and use the sTypo* metrics.
1359 * 2. Otherwise, use the `hhea' table's metrics.
1360 * 3. If they are zero and the OS/2 table exists,
1361 * 1. use the OS/2 table's sTypo* metrics if they are non-zero.
1362 * 2. Otherwise, use the OS/2 table's usWin* metrics.
1363 */
1364
1365 if ( face->os2.version != 0xFFFFU && face->os2.fsSelection & 128 )
1366 {
1367 root->ascender = face->os2.sTypoAscender;
1368 root->descender = face->os2.sTypoDescender;
1369 root->height = root->ascender - root->descender +
1370 face->os2.sTypoLineGap;
1371 }
1372 else
1373 {
1374 root->ascender = face->horizontal.Ascender;
1375 root->descender = face->horizontal.Descender;
1376 root->height = root->ascender - root->descender +
1377 face->horizontal.Line_Gap;
1378
1379 if ( !( root->ascender || root->descender ) )
1380 {
1381 if ( face->os2.version != 0xFFFFU )
1382 {
1383 if ( face->os2.sTypoAscender || face->os2.sTypoDescender )
1384 {
1385 root->ascender = face->os2.sTypoAscender;
1386 root->descender = face->os2.sTypoDescender;
1387 root->height = root->ascender - root->descender +
1388 face->os2.sTypoLineGap;
1389 }
1390 else
1391 {
1392 root->ascender = (FT_Short)face->os2.usWinAscent;
1393 root->descender = -(FT_Short)face->os2.usWinDescent;
1394 root->height = root->ascender - root->descender;
1395 }
1396 }
1397 }
1398 }
1399
1400 root->max_advance_width =
1401 (FT_Short)face->horizontal.advance_Width_Max;
1402 root->max_advance_height =
1403 (FT_Short)( face->vertical_info ? face->vertical.advance_Height_Max
1404 : root->height );
1405
1406 /* See https://www.microsoft.com/typography/otspec/post.htm -- */
1407 /* Adjust underline position from top edge to centre of */
1408 /* stroke to convert TrueType meaning to FreeType meaning. */
1409 root->underline_position = face->postscript.underlinePosition -
1410 face->postscript.underlineThickness / 2;
1411 root->underline_thickness = face->postscript.underlineThickness;
1412 }
1413
1414 }
1415
1416 Exit:
1417 FT_TRACE2(( "sfnt_load_face: done\n" ));
1418
1419 return error;
1420 }
1421
1422
1423 #undef LOAD_
1424 #undef LOADM_
1425 #undef GET_NAME
1426
1427
1428 FT_LOCAL_DEF( void )
1429 sfnt_done_face( TT_Face face )
1430 {
1431 FT_Memory memory;
1432 SFNT_Service sfnt;
1433
1434
1435 if ( !face )
1436 return;
1437
1438 memory = face->root.memory;
1439 sfnt = (SFNT_Service)face->sfnt;
1440
1441 if ( sfnt )
1442 {
1443 /* destroy the postscript names table if it is loaded */
1444 if ( sfnt->free_psnames )
1445 sfnt->free_psnames( face );
1446
1447 /* destroy the embedded bitmaps table if it is loaded */
1448 if ( sfnt->free_eblc )
1449 sfnt->free_eblc( face );
1450
1451 /* destroy color table data if it is loaded */
1452 if ( sfnt->free_cpal )
1453 {
1454 sfnt->free_cpal( face );
1455 sfnt->free_colr( face );
1456 }
1457
1458 #ifdef FT_CONFIG_OPTION_SVG
1459 /* free SVG data */
1460 if ( sfnt->free_svg )
1461 sfnt->free_svg( face );
1462 #endif
1463 }
1464
1465 #ifdef TT_CONFIG_OPTION_BDF
1466 /* freeing the embedded BDF properties */
1467 tt_face_free_bdf_props( face );
1468 #endif
1469
1470 /* freeing the kerning table */
1471 tt_face_done_kern( face );
1472
1473 /* freeing the collection table */
1474 FT_FREE( face->ttc_header.offsets );
1475 face->ttc_header.count = 0;
1476
1477 /* freeing table directory */
1478 FT_FREE( face->dir_tables );
1479 face->num_tables = 0;
1480
1481 {
1482 FT_Stream stream = FT_FACE_STREAM( face );
1483
1484
1485 /* simply release the 'cmap' table frame */
1486 FT_FRAME_RELEASE( face->cmap_table );
1487 face->cmap_size = 0;
1488 }
1489
1490 face->horz_metrics_size = 0;
1491 face->vert_metrics_size = 0;
1492
1493 /* freeing vertical metrics, if any */
1494 if ( face->vertical_info )
1495 {
1496 FT_FREE( face->vertical.long_metrics );
1497 FT_FREE( face->vertical.short_metrics );
1498 face->vertical_info = 0;
1499 }
1500
1501 /* freeing the gasp table */
1502 FT_FREE( face->gasp.gaspRanges );
1503 face->gasp.numRanges = 0;
1504
1505 /* freeing the name table */
1506 if ( sfnt )
1507 sfnt->free_name( face );
1508
1509 /* freeing family and style name */
1510 FT_FREE( face->root.family_name );
1511 FT_FREE( face->root.style_name );
1512
1513 /* freeing sbit size table */
1514 FT_FREE( face->root.available_sizes );
1515 FT_FREE( face->sbit_strike_map );
1516 face->root.num_fixed_sizes = 0;
1517
1518 FT_FREE( face->postscript_name );
1519
1520 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
1521 FT_FREE( face->var_postscript_prefix );
1522 FT_FREE( face->non_var_style_name );
1523 #endif
1524
1525 /* freeing glyph color palette data */
1526 FT_FREE( face->palette_data.palette_name_ids );
1527 FT_FREE( face->palette_data.palette_flags );
1528 FT_FREE( face->palette_data.palette_entry_name_ids );
1529 FT_FREE( face->palette );
1530
1531 face->sfnt = NULL;
1532 }
1533
1534
1535 /* END */