1/****************************************************************************
2 *
3 * psstack.h
4 *
5 * Adobe's code for emulating a CFF stack (specification).
6 *
7 * Copyright 2007-2013 Adobe Systems Incorporated.
8 *
9 * This software, and all works of authorship, whether in source or
10 * object code form as indicated by the copyright notice(s) included
11 * herein (collectively, the "Work") is made available, and may only be
12 * used, modified, and distributed under the FreeType Project License,
13 * LICENSE.TXT. Additionally, subject to the terms and conditions of the
14 * FreeType Project License, each contributor to the Work hereby grants
15 * to any individual or legal entity exercising permissions granted by
16 * the FreeType Project License and this section (hereafter, "You" or
17 * "Your") a perpetual, worldwide, non-exclusive, no-charge,
18 * royalty-free, irrevocable (except as stated in this section) patent
19 * license to make, have made, use, offer to sell, sell, import, and
20 * otherwise transfer the Work, where such license applies only to those
21 * patent claims licensable by such contributor that are necessarily
22 * infringed by their contribution(s) alone or by combination of their
23 * contribution(s) with the Work to which such contribution(s) was
24 * submitted. If You institute patent litigation against any entity
25 * (including a cross-claim or counterclaim in a lawsuit) alleging that
26 * the Work or a contribution incorporated within the Work constitutes
27 * direct or contributory patent infringement, then any patent licenses
28 * granted to You under this License for that Work shall terminate as of
29 * the date such litigation is filed.
30 *
31 * By using, modifying, or distributing the Work you indicate that you
32 * have read and understood the terms and conditions of the
33 * FreeType Project License as well as those provided in this section,
34 * and you accept them fully.
35 *
36 */
37
38
39#ifndef PSSTACK_H_
40#define PSSTACK_H_
41
42#include <freetype/internal/compiler-macros.h>
43
44FT_BEGIN_HEADER
45
46
47 /* CFF operand stack; specified maximum of 48 or 192 values */
48 typedef struct CF2_StackNumber_
49 {
50 union
51 {
52 CF2_Fixed r; /* 16.16 fixed-point */
53 CF2_Frac f; /* 2.30 fixed-point (for font matrix) */
54 CF2_Int i;
55 } u;
56
57 CF2_NumberType type;
58
59 } CF2_StackNumber;
60
61
62 typedef struct CF2_StackRec_
63 {
64 FT_Memory memory;
65 FT_Error* error;
66 CF2_StackNumber* buffer;
67 CF2_StackNumber* top;
68 FT_UInt stackSize;
69
70 } CF2_StackRec, *CF2_Stack;
71
72
73 FT_LOCAL( CF2_Stack )
74 cf2_stack_init( FT_Memory memory,
75 FT_Error* error,
76 FT_UInt stackSize );
77 FT_LOCAL( void )
78 cf2_stack_free( CF2_Stack stack );
79
80 FT_LOCAL( CF2_UInt )
81 cf2_stack_count( CF2_Stack stack );
82
83 FT_LOCAL( void )
84 cf2_stack_pushInt( CF2_Stack stack,
85 CF2_Int val );
86 FT_LOCAL( void )
87 cf2_stack_pushFixed( CF2_Stack stack,
88 CF2_Fixed val );
89
90 FT_LOCAL( CF2_Int )
91 cf2_stack_popInt( CF2_Stack stack );
92 FT_LOCAL( CF2_Fixed )
93 cf2_stack_popFixed( CF2_Stack stack );
94
95 FT_LOCAL( CF2_Fixed )
96 cf2_stack_getReal( CF2_Stack stack,
97 CF2_UInt idx );
98 FT_LOCAL( void )
99 cf2_stack_setReal( CF2_Stack stack,
100 CF2_UInt idx,
101 CF2_Fixed val );
102
103 FT_LOCAL( void )
104 cf2_stack_pop( CF2_Stack stack,
105 CF2_UInt num );
106
107 FT_LOCAL( void )
108 cf2_stack_roll( CF2_Stack stack,
109 CF2_Int count,
110 CF2_Int idx );
111
112 FT_LOCAL( void )
113 cf2_stack_clear( CF2_Stack stack );
114
115
116FT_END_HEADER
117
118
119#endif /* PSSTACK_H_ */
120
121
122/* END */
123