1 /***************************************************************************/ 2 /* */ 3 /* cf2stack.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 CF2STACK_H_ 40 #define CF2STACK_H_ 41 42 43 FT_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 ); 113 114 115 FT_END_HEADER 116 117 118 #endif /* CF2STACK_H_ */ 119 120 121 /* END */ 122