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 */
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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
43FT_BEGIN_HEADER
44
45
46 /* CFF operand stack; specified maximum of 48 or 192 values */
47 typedef struct CF2_StackNumber_
48 {
49 union
50 {
51 CF2_Fixed r; /* 16.16 fixed point */
52 CF2_Frac f; /* 2.30 fixed point (for font matrix) */
53 CF2_Int i;
54 } u;
55
56 CF2_NumberType type;
57
58 } CF2_StackNumber;
59
60
61 typedef struct CF2_StackRec_
62 {
63 FT_Memory memory;
64 FT_Error* error;
65 CF2_StackNumber* buffer;
66 CF2_StackNumber* top;
67 FT_UInt stackSize;
68
69 } CF2_StackRec, *CF2_Stack;
70
71
72 FT_LOCAL( CF2_Stack )
73 cf2_stack_init( FT_Memory memory,
74 FT_Error* error,
75 FT_UInt stackSize );
76 FT_LOCAL( void )
77 cf2_stack_free( CF2_Stack stack );
78
79 FT_LOCAL( CF2_UInt )
80 cf2_stack_count( CF2_Stack stack );
81
82 FT_LOCAL( void )
83 cf2_stack_pushInt( CF2_Stack stack,
84 CF2_Int val );
85 FT_LOCAL( void )
86 cf2_stack_pushFixed( CF2_Stack stack,
87 CF2_Fixed val );
88
89 FT_LOCAL( CF2_Int )
90 cf2_stack_popInt( CF2_Stack stack );
91 FT_LOCAL( CF2_Fixed )
92 cf2_stack_popFixed( CF2_Stack stack );
93
94 FT_LOCAL( CF2_Fixed )
95 cf2_stack_getReal( CF2_Stack stack,
96 CF2_UInt idx );
97 FT_LOCAL( void )
98 cf2_stack_setReal( CF2_Stack stack,
99 CF2_UInt idx,
100 CF2_Fixed val );
101
102 FT_LOCAL( void )
103 cf2_stack_pop( CF2_Stack stack,
104 CF2_UInt num );
105
106 FT_LOCAL( void )
107 cf2_stack_roll( CF2_Stack stack,
108 CF2_Int count,
109 CF2_Int idx );
110
111 FT_LOCAL( void )
112 cf2_stack_clear( CF2_Stack stack );
113
114
115FT_END_HEADER
116
117
118#endif /* PSSTACK_H_ */
119
120
121/* END */
122