summaryrefslogtreecommitdiffstats
path: root/include/freetype/internal/psaux.h
blob: 1c5f784f52c1725bbf6edf91ee0e5fbea9022f25 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
/***************************************************************************/
/*                                                                         */
/*  psaux.h                                                                */
/*                                                                         */
/*    Auxiliary functions and data structures related to PostScript fonts  */
/*    (specification).                                                     */
/*                                                                         */
/*  Copyright 1996-2015 by                                                 */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


#ifndef __PSAUX_H__
#define __PSAUX_H__


#include <ft2build.h>
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_TYPE1_TYPES_H
#include FT_SERVICE_POSTSCRIPT_CMAPS_H


FT_BEGIN_HEADER


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                             T1_TABLE                          *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/


  typedef struct PS_TableRec_*              PS_Table;
  typedef const struct PS_Table_FuncsRec_*  PS_Table_Funcs;


  /*************************************************************************/
  /*                                                                       */
  /* <Struct>                                                              */
  /*    PS_Table_FuncsRec                                                  */
  /*                                                                       */
  /* <Description>                                                         */
  /*    A set of function pointers to manage PS_Table objects.             */
  /*                                                                       */
  /* <Fields>                                                              */
  /*    table_init    :: Used to initialize a table.                       */
  /*                                                                       */
  /*    table_done    :: Finalizes resp. destroy a given table.            */
  /*                                                                       */
  /*    table_add     :: Adds a new object to a table.                     */
  /*                                                                       */
  /*    table_release :: Releases table data, then finalizes it.           */
  /*                                                                       */
  typedef struct  PS_Table_FuncsRec_
  {
    FT_Error
    (*init)( PS_Table   table,
             FT_Int     count,
             FT_Memory  memory );

    void
    (*done)( PS_Table  table );

    FT_Error
    (*add)( PS_Table  table,
            FT_Int    idx,
            void*     object,
            FT_UInt   length );

    void
    (*release)( PS_Table  table );

  } PS_Table_FuncsRec;


  /*************************************************************************/
  /*                                                                       */
  /* <Struct>                                                              */
  /*    PS_TableRec                                                        */
  /*                                                                       */
  /* <Description>                                                         */
  /*    A PS_Table is a simple object used to store an array of objects in */
  /*    a single memory block.                                             */
  /*                                                                       */
  /* <Fields>                                                              */
  /*    block     :: The address in memory of the growheap's block.  This  */
  /*                 can change between two object adds, due to            */
  /*                 reallocation.                                         */
  /*                                                                       */
  /*    cursor    :: The current top of the grow heap within its block.    */
  /*                                                                       */
  /*    capacity  :: The current size of the heap block.  Increments by    */
  /*                 1kByte chunks.                                        */
  /*                                                                       */
  /*    init      :: Set to 0xDEADBEEF if `elements' and `lengths' have    */
  /*                 been allocated.                                       */
  /*                                                                       */
  /*    max_elems :: The maximum number of elements in table.              */
  /*                                                                       */
  /*    num_elems :: The current number of elements in table.              */
  /*                                                                       */
  /*    elements  :: A table of element addresses within the block.        */
  /*                                                                       */
  /*    lengths   :: A table of element sizes within the block.            */
  /*                                                                       */
  /*    memory    :: The object used for memory operations                 */
  /*                 (alloc/realloc).                                      */
  /*                                                                       */
  /*    funcs     :: A table of method pointers for this object.           */
  /*                                                                       */
  typedef struct  PS_TableRec_
  {
    FT_Byte*           block;          /* current memory block           */
    FT_Offset          cursor;         /* current cursor in memory block */
    FT_Offset          capacity;       /* current size of memory block   */
    FT_ULong           init;

    FT_Int             max_elems;
    FT_Int             num_elems;
    FT_Byte**          elements;       /* addresses of table elements */
    FT_UInt*           lengths;        /* lengths of table elements   */

    FT_Memory          memory;
    PS_Table_FuncsRec  funcs;

  } PS_TableRec;


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                       T1 FIELDS & TOKENS                      *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  typedef struct PS_ParserRec_*  PS_Parser;

  typedef struct T1_TokenRec_*   T1_Token;

  typedef struct T1_FieldRec_*   T1_Field;


  /* simple enumeration type used to identify token types */
  typedef enum  T1_TokenType_
  {
    T1_TOKEN_TYPE_NONE = 0,
    T1_TOKEN_TYPE_ANY,
    T1_TOKEN_TYPE_STRING,
    T1_TOKEN_TYPE_ARRAY,
    T1_TOKEN_TYPE_KEY, /* aka `name' */

    /* do not remove */
    T1_TOKEN_TYPE_MAX

  } T1_TokenType;


  /* a simple structure used to identify tokens */
  typedef struct  T1_TokenRec_
  {
    FT_Byte*      start;   /* first character of token in input stream */
    FT_Byte*      limit;   /* first character after the token          */
    T1_TokenType  type;    /* type of token                            */

  } T1_TokenRec;


  /* enumeration type used to identify object fields */
  typedef enum  T1_FieldType_
  {
    T1_FIELD_TYPE_NONE = 0,
    T1_FIELD_TYPE_BOOL,
    T1_FIELD_TYPE_INTEGER,
    T1_FIELD_TYPE_FIXED,
    T1_FIELD_TYPE_FIXED_1000,
    T1_FIELD_TYPE_STRING,
    T1_FIELD_TYPE_KEY,
    T1_FIELD_TYPE_BBOX,
    T1_FIELD_TYPE_MM_BBOX,
    T1_FIELD_TYPE_INTEGER_ARRAY,
    T1_FIELD_TYPE_FIXED_ARRAY,
    T1_FIELD_TYPE_CALLBACK,

    /* do not remove */
    T1_FIELD_TYPE_MAX

  } T1_FieldType;


  typedef enum  T1_FieldLocation_
  {
    T1_FIELD_LOCATION_CID_INFO,
    T1_FIELD_LOCATION_FONT_DICT,
    T1_FIELD_LOCATION_FONT_EXTRA,
    T1_FIELD_LOCATION_FONT_INFO,
    T1_FIELD_LOCATION_PRIVATE,
    T1_FIELD_LOCATION_BBOX,
    T1_FIELD_LOCATION_LOADER,
    T1_FIELD_LOCATION_FACE,
    T1_FIELD_LOCATION_BLEND,

    /* do not remove */
    T1_FIELD_LOCATION_MAX

  } T1_FieldLocation;


  typedef void
  (*T1_Field_ParseFunc)( FT_Face     face,
                         FT_Pointer  parser );


  /* structure type used to model object fields */
  typedef struct  T1_FieldRec_
  {
    const char*         ident;        /* field identifier               */
    T1_FieldLocation    location;
    T1_FieldType        type;         /* type of field                  */
    T1_Field_ParseFunc  reader;
    FT_UInt             offset;       /* offset of field in object      */
    FT_Byte             size;         /* size of field in bytes         */
    FT_UInt             array_max;    /* maximum number of elements for */
                                      /* array                          */
    FT_UInt             count_offset; /* offset of element count for    */
                                      /* arrays; must not be zero if in */
                                      /* use -- in other words, a       */
                                      /* `num_FOO' element must not     */
                                      /* start the used structure if we */
                                      /* parse a `FOO' array            */
    FT_UInt             dict;         /* where we expect it             */
  } T1_FieldRec;

#define T1_FIELD_DICT_FONTDICT ( 1 << 0 ) /* also FontInfo and FDArray */
#define T1_FIELD_DICT_PRIVATE  ( 1 << 1 )



#define T1_NEW_SIMPLE_FIELD( _ident, _type, _fname, _dict ) \
          {                                                 \
            _ident, T1CODE, _type,                          \
            0,                                              \
            FT_FIELD_OFFSET( _fname ),                      \
            FT_FIELD_SIZE( _fname ),                        \
            0, 0,                                           \
            _dict                                           \
          },

#define T1_NEW_CALLBACK_FIELD( _ident, _reader, _dict ) \
          {                                             \
            _ident, T1CODE, T1_FIELD_TYPE_CALLBACK,     \
            (T1_Field_ParseFunc)_reader,                \
            0, 0,                                       \
            0, 0,                                       \
            _dict                                       \
          },

#define T1_NEW_TABLE_FIELD( _ident, _type, _fname, _max, _dict ) \
          {                                                      \
            _ident, T1CODE, _type,                               \
            0,                                                   \
            FT_FIELD_OFFSET( _fname ),                           \
            FT_FIELD_SIZE_DELTA( _fname ),                       \
            _max,                                                \
            FT_FIELD_OFFSET( num_ ## _fname ),                   \
            _dict                                                \
          },

#define T1_NEW_TABLE_FIELD2( _ident, _type, _fname, _max, _dict ) \
          {                                                       \
            _ident, T1CODE, _type,                                \
            0,                                                    \
            FT_FIELD_OFFSET( _fname ),                            \
            FT_FIELD_SIZE_DELTA( _fname ),                        \
            _max, 0,                                              \
            _dict                                                 \
          },


#define T1_FIELD_BOOL( _ident, _fname, _dict )                             \
          T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_BOOL, _fname, _dict )

#define T1_FIELD_NUM( _ident, _fname, _dict )                                 \
          T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_INTEGER, _fname, _dict )

#define T1_FIELD_FIXED( _ident, _fname, _dict )                             \
          T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_FIXED, _fname, _dict )

#define T1_FIELD_FIXED_1000( _ident, _fname, _dict )                     \
          T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_FIXED_1000, _fname, \
                               _dict )

#define T1_FIELD_STRING( _ident, _fname, _dict )                             \
          T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_STRING, _fname, _dict )

#define T1_FIELD_KEY( _ident, _fname, _dict )                             \
          T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_KEY, _fname, _dict )

#define T1_FIELD_BBOX( _ident, _fname, _dict )                             \
          T1_NEW_SIMPLE_FIELD( _ident, T1_FIELD_TYPE_BBOX, _fname, _dict )


#define T1_FIELD_NUM_TABLE( _ident, _fname, _fmax, _dict )         \
          T1_NEW_TABLE_FIELD( _ident, T1_FIELD_TYPE_INTEGER_ARRAY, \
                              _fname, _fmax, _dict )

#define T1_FIELD_FIXED_TABLE( _ident, _fname, _fmax, _dict )     \
          T1_NEW_TABLE_FIELD( _ident, T1_FIELD_TYPE_FIXED_ARRAY, \
                              _fname, _fmax, _dict )

#define T1_FIELD_NUM_TABLE2( _ident, _fname, _fmax, _dict )         \
          T1_NEW_TABLE_FIELD2( _ident, T1_FIELD_TYPE_INTEGER_ARRAY, \
                               _fname, _fmax, _dict )

#define T1_FIELD_FIXED_TABLE2( _ident, _fname, _fmax, _dict )     \
          T1_NEW_TABLE_FIELD2( _ident, T1_FIELD_TYPE_FIXED_ARRAY, \
                               _fname, _fmax, _dict )

#define T1_FIELD_CALLBACK( _ident, _name, _dict )       \
          T1_NEW_CALLBACK_FIELD( _ident, _name, _dict )


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                            T1 PARSER                          *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  typedef const struct PS_Parser_FuncsRec_*  PS_Parser_Funcs;

  typedef struct  PS_Parser_FuncsRec_
  {
    void
    (*init)( PS_Parser  parser,
             FT_Byte*   base,
             FT_Byte*   limit,
             FT_Memory  memory );

    void
    (*done)( PS_Parser  parser );

    void
    (*skip_spaces)( PS_Parser  parser );
    void
    (*skip_PS_token)( PS_Parser  parser );

    FT_Long
    (*to_int)( PS_Parser  parser );
    FT_Fixed
    (*to_fixed)( PS_Parser  parser,
                 FT_Int     power_ten );

    FT_Error
    (*to_bytes)( PS_Parser  parser,
                 FT_Byte*   bytes,
                 FT_Offset  max_bytes,
                 FT_ULong*  pnum_bytes,
                 FT_Bool    delimiters );

    FT_Int
    (*to_coord_array)( PS_Parser  parser,
                       FT_Int     max_coords,
                       FT_Short*  coords );
    FT_Int
    (*to_fixed_array)( PS_Parser  parser,
                       FT_Int     max_values,
                       FT_Fixed*  values,
                       FT_Int     power_ten );

    void
    (*to_token)( PS_Parser  parser,
                 T1_Token   token );
    void
    (*to_token_array)( PS_Parser  parser,
                       T1_Token   tokens,
                       FT_UInt    max_tokens,
                       FT_Int*    pnum_tokens );

    FT_Error
    (*load_field)( PS_Parser       parser,
                   const T1_Field  field,
                   void**          objects,
                   FT_UInt         max_objects,
                   FT_ULong*       pflags );

    FT_Error
    (*load_field_table)( PS_Parser       parser,
                         const T1_Field  field,
                         void**          objects,
                         FT_UInt         max_objects,
                         FT_ULong*       pflags );

  } PS_Parser_FuncsRec;


  /*************************************************************************/
  /*                                                                       */
  /* <Struct>                                                              */
  /*    PS_ParserRec                                                       */
  /*                                                                       */
  /* <Description>                                                         */
  /*    A PS_Parser is an object used to parse a Type 1 font very quickly. */
  /*                                                                       */
  /* <Fields>                                                              */
  /*    cursor :: The current position in the text.                        */
  /*                                                                       */
  /*    base   :: Start of the processed text.                             */
  /*                                                                       */
  /*    limit  :: End of the processed text.                               */
  /*                                                                       */
  /*    error  :: The last error returned.                                 */
  /*                                                                       */
  /*    memory :: The object used for memory operations (alloc/realloc).   */
  /*                                                                       */
  /*    funcs  :: A table of functions for the parser.                     */
  /*                                                                       */
  typedef struct  PS_ParserRec_
  {
    FT_Byte*   cursor;
    FT_Byte*   base;
    FT_Byte*   limit;
    FT_Error   error;
    FT_Memory  memory;

    PS_Parser_FuncsRec  funcs;

  } PS_ParserRec;


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                         T1 BUILDER                            *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/


  typedef struct T1_BuilderRec_*  T1_Builder;


  typedef FT_Error
  (*T1_Builder_Check_Points_Func)( T1_Builder  builder,
                                   FT_Int      count );

  typedef void
  (*T1_Builder_Add_Point_Func)( T1_Builder  builder,
                                FT_Pos      x,
                                FT_Pos      y,
                                FT_Byte     flag );

  typedef FT_Error
  (*T1_Builder_Add_Point1_Func)( T1_Builder  builder,
                                 FT_Pos      x,
                                 FT_Pos      y );

  typedef FT_Error
  (*T1_Builder_Add_Contour_Func)( T1_Builder  builder );

  typedef FT_Error
  (*T1_Builder_Start_Point_Func)( T1_Builder  builder,
                                  FT_Pos      x,
                                  FT_Pos      y );

  typedef void
  (*T1_Builder_Close_Contour_Func)( T1_Builder  builder );


  typedef const struct T1_Builder_FuncsRec_*  T1_Builder_Funcs;

  typedef struct  T1_Builder_FuncsRec_
  {
    void
    (*init)( T1_Builder    builder,
             FT_Face       face,
             FT_Size       size,
             FT_GlyphSlot  slot,
             FT_Bool       hinting );

    void
    (*done)( T1_Builder   builder );

    T1_Builder_Check_Points_Func   check_points;
    T1_Builder_Add_Point_Func      add_point;
    T1_Builder_Add_Point1_Func     add_point1;
    T1_Builder_Add_Contour_Func    add_contour;
    T1_Builder_Start_Point_Func    start_point;
    T1_Builder_Close_Contour_Func  close_contour;

  } T1_Builder_FuncsRec;


  /* an enumeration type to handle charstring parsing states */
  typedef enum  T1_ParseState_
  {
    T1_Parse_Start,
    T1_Parse_Have_Width,
    T1_Parse_Have_Moveto,
    T1_Parse_Have_Path

  } T1_ParseState;


  /*************************************************************************/
  /*                                                                       */
  /* <Structure>                                                           */
  /*    T1_BuilderRec                                                      */
  /*                                                                       */
  /* <Description>                                                         */
  /*     A structure used during glyph loading to store its outline.       */
  /*                                                                       */
  /* <Fields>                                                              */
  /*    memory       :: The current memory object.                         */
  /*                                                                       */
  /*    face         :: The current face object.                           */
  /*                                                                       */
  /*    glyph        :: The current glyph slot.                            */
  /*                                                                       */
  /*    loader       :: XXX                                                */
  /*                                                                       */
  /*    base         :: The base glyph outline.                            */
  /*                                                                       */
  /*    current      :: The current glyph outline.                         */
  /*                                                                       */
  /*    max_points   :: maximum points in builder outline                  */
  /*                                                                       */
  /*    max_contours :: Maximum number of contours in builder outline.     */
  /*                                                                       */
  /*    pos_x        :: The horizontal translation (if composite glyph).   */
  /*                                                                       */
  /*    pos_y        :: The vertical translation (if composite glyph).     */
  /*                                                                       */
  /*    left_bearing :: The left side bearing point.                       */
  /*                                                                       */
  /*    advance      :: The horizontal advance vector.                     */
  /*                                                                       */
  /*    bbox         :: Unused.                                            */
  /*                                                                       */
  /*    parse_state  :: An enumeration which controls the charstring       */
  /*                    parsing state.                                     */
  /*                                                                       */
  /*    load_points  :: If this flag is not set, no points are loaded.     */
  /*                                                                       */
  /*    no_recurse   :: Set but not used.                                  */
  /*                                                                       */
  /*    metrics_only :: A boolean indicating that we only want to compute  */
  /*                    the metrics of a given glyph, not load all of its  */
  /*                    points.                                            */
  /*                                                                       */
  /*    funcs        :: An array of function pointers for the builder.     */
  /*                                                                       */
  typedef struct  T1_BuilderRec_
  {
    FT_Memory       memory;
    FT_Face         face;
    FT_GlyphSlot    glyph;
    FT_GlyphLoader  loader;
    FT_Outline*     base;
    FT_Outline*     current;

    FT_Pos          pos_x;
    FT_Pos          pos_y;

    FT_Vector       left_bearing;
    FT_Vector       advance;

    FT_BBox         bbox;          /* bounding box */
    T1_ParseState   parse_state;
    FT_Bool         load_points;
    FT_Bool         no_recurse;

    FT_Bool         metrics_only;

    void*           hints_funcs;    /* hinter-specific */
    void*           hints_globals;  /* hinter-specific */

    T1_Builder_FuncsRec  funcs;

  } T1_BuilderRec;


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                         T1 DECODER                            *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

#if 0

  /*************************************************************************/
  /*                                                                       */
  /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine   */
  /* calls during glyph loading.                                           */
  /*                                                                       */
#define T1_MAX_SUBRS_CALLS  8


  /*************************************************************************/
  /*                                                                       */
  /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity.  A     */
  /* minimum of 16 is required.                                            */
  /*                                                                       */
#define T1_MAX_CHARSTRINGS_OPERANDS  32

#endif /* 0 */


  typedef struct  T1_Decoder_ZoneRec_
  {
    FT_Byte*  cursor;
    FT_Byte*  base;
    FT_Byte*  limit;

  } T1_Decoder_ZoneRec, *T1_Decoder_Zone;


  typedef struct T1_DecoderRec_*              T1_Decoder;
  typedef const struct T1_Decoder_FuncsRec_*  T1_Decoder_Funcs;


  typedef FT_Error
  (*T1_Decoder_Callback)( T1_Decoder  decoder,
                          FT_UInt     glyph_index );


  typedef struct  T1_Decoder_FuncsRec_
  {
    FT_Error
    (*init)( T1_Decoder           decoder,
             FT_Face              face,
             FT_Size              size,
             FT_GlyphSlot         slot,
             FT_Byte**            glyph_names,
             PS_Blend             blend,
             FT_Bool              hinting,
             FT_Render_Mode       hint_mode,
             T1_Decoder_Callback  callback );

    void
    (*done)( T1_Decoder  decoder );

    FT_Error
    (*parse_charstrings)( T1_Decoder  decoder,
                          FT_Byte*    base,
                          FT_UInt     len );

  } T1_Decoder_FuncsRec;


  typedef struct  T1_DecoderRec_
  {
    T1_BuilderRec        builder;

    FT_Long              stack[T1_MAX_CHARSTRINGS_OPERANDS];
    FT_Long*             top;

    T1_Decoder_ZoneRec   zones[T1_MAX_SUBRS_CALLS + 1];
    T1_Decoder_Zone      zone;

    FT_Service_PsCMaps   psnames;      /* for seac */
    FT_UInt              num_glyphs;
    FT_Byte**            glyph_names;

    FT_Int               lenIV;        /* internal for sub routine calls */
    FT_Int               num_subrs;
    FT_Byte**            subrs;
    FT_UInt*             subrs_len;    /* array of subrs length (optional) */

    FT_Matrix            font_matrix;
    FT_Vector            font_offset;

    FT_Int               flex_state;
    FT_Int               num_flex_vectors;
    FT_Vector            flex_vectors[7];

    PS_Blend             blend;       /* for multiple master support */

    FT_Render_Mode       hint_mode;

    T1_Decoder_Callback  parse_callback;
    T1_Decoder_FuncsRec  funcs;

    FT_Long*             buildchar;
    FT_UInt              len_buildchar;

    FT_Bool              seac;

  } T1_DecoderRec;


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                            AFM PARSER                         *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  typedef struct AFM_ParserRec_*  AFM_Parser;

  typedef struct  AFM_Parser_FuncsRec_
  {
    FT_Error
    (*init)( AFM_Parser  parser,
             FT_Memory   memory,
             FT_Byte*    base,
             FT_Byte*    limit );

    void
    (*done)( AFM_Parser  parser );

    FT_Error
    (*parse)( AFM_Parser  parser );

  } AFM_Parser_FuncsRec;


  typedef struct AFM_StreamRec_*  AFM_Stream;


  /*************************************************************************/
  /*                                                                       */
  /* <Struct>                                                              */
  /*    AFM_ParserRec                                                      */
  /*                                                                       */
  /* <Description>                                                         */
  /*    An AFM_Parser is a parser for the AFM files.                       */
  /*                                                                       */
  /* <Fields>                                                              */
  /*    memory    :: The object used for memory operations (alloc and      */
  /*                 realloc).                                             */
  /*                                                                       */
  /*    stream    :: This is an opaque object.                             */
  /*                                                                       */
  /*    FontInfo  :: The result will be stored here.                       */
  /*                                                                       */
  /*    get_index :: A user provided function to get a glyph index by its  */
  /*                 name.                                                 */
  /*                                                                       */
  typedef struct  AFM_ParserRec_
  {
    FT_Memory     memory;
    AFM_Stream    stream;

    AFM_FontInfo  FontInfo;

    FT_Int
    (*get_index)( const char*  name,
                  FT_Offset    len,
                  void*        user_data );

    void*         user_data;

  } AFM_ParserRec;


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                     TYPE1 CHARMAPS                            *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  typedef const struct T1_CMap_ClassesRec_*  T1_CMap_Classes;

  typedef struct T1_CMap_ClassesRec_
  {
    FT_CMap_Class  standard;
    FT_CMap_Class  expert;
    FT_CMap_Class  custom;
    FT_CMap_Class  unicode;

  } T1_CMap_ClassesRec;


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                        PSAux Module Interface                 *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

  typedef struct  PSAux_ServiceRec_
  {
    /* don't use `PS_Table_Funcs' and friends to avoid compiler warnings */
    const PS_Table_FuncsRec*    ps_table_funcs;
    const PS_Parser_FuncsRec*   ps_parser_funcs;
    const T1_Builder_FuncsRec*  t1_builder_funcs;
    const T1_Decoder_FuncsRec*  t1_decoder_funcs;

    void
    (*t1_decrypt)( FT_Byte*   buffer,
                   FT_Offset  length,
                   FT_UShort  seed );

    T1_CMap_Classes  t1_cmap_classes;

    /* fields after this comment line were added after version 2.1.10 */
    const AFM_Parser_FuncsRec*  afm_parser_funcs;

  } PSAux_ServiceRec, *PSAux_Service;

  /* backwards-compatible type definition */
  typedef PSAux_ServiceRec   PSAux_Interface;


  /*************************************************************************/
  /*************************************************************************/
  /*****                                                               *****/
  /*****                 Some convenience functions                    *****/
  /*****                                                               *****/
  /*************************************************************************/
  /*************************************************************************/

#define IS_PS_NEWLINE( ch ) \
  ( (ch) == '\r' ||         \
    (ch) == '\n' )

#define IS_PS_SPACE( ch )  \
  ( (ch) == ' '         || \
    IS_PS_NEWLINE( ch ) || \
    (ch) == '\t'        || \
    (ch) == '\f'        || \
    (ch) == '\0' )

#define IS_PS_SPECIAL( ch )       \
  ( (ch) == '/'                || \
    (ch) == '(' || (ch) == ')' || \
    (ch) == '<' || (ch) == '>' || \
    (ch) == '[' || (ch) == ']' || \
    (ch) == '{' || (ch) == '}' || \
    (ch) == '%'                )

#define IS_PS_DELIM( ch )  \
  ( IS_PS_SPACE( ch )   || \
    IS_PS_SPECIAL( ch ) )

#define IS_PS_DIGIT( ch )        \
  ( (ch) >= '0' && (ch) <= '9' )

#define IS_PS_XDIGIT( ch )            \
  ( IS_PS_DIGIT( ch )              || \
    ( (ch) >= 'A' && (ch) <= 'F' ) || \
    ( (ch) >= 'a' && (ch) <= 'f' ) )

#define IS_PS_BASE85( ch )       \
  ( (ch) >= '!' && (ch) <= 'u' )

#define IS_PS_TOKEN( cur, limit, token )                                \
  ( (char)(cur)[0] == (token)[0]                                     && \
    ( (cur) + sizeof ( (token) ) == (limit) ||                          \
      ( (cur) + sizeof( (token) ) < (limit)          &&                 \
        IS_PS_DELIM( (cur)[sizeof ( (token) ) - 1] ) ) )             && \
    ft_strncmp( (char*)(cur), (token), sizeof ( (token) ) - 1 ) == 0 )


FT_END_HEADER

#endif /* __PSAUX_H__ */


/* END */