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[CF2_OPERAND_STACK_SIZE]; 66 CF2_StackNumber* top; 67 68 } CF2_StackRec, *CF2_Stack; 69 70 71 FT_LOCAL( CF2_Stack ) 72 cf2_stack_init( FT_Memory memory, 73 FT_Error* error ); 74 FT_LOCAL( void ) 75 cf2_stack_free( CF2_Stack stack ); 76 77 FT_LOCAL( CF2_UInt ) 78 cf2_stack_count( CF2_Stack stack ); 79 80 FT_LOCAL( void ) 81 cf2_stack_pushInt( CF2_Stack stack, 82 CF2_Int val ); 83 FT_LOCAL( void ) 84 cf2_stack_pushFixed( CF2_Stack stack, 85 CF2_Fixed val ); 86 87 FT_LOCAL( CF2_Int ) 88 cf2_stack_popInt( CF2_Stack stack ); 89 FT_LOCAL( CF2_Fixed ) 90 cf2_stack_popFixed( CF2_Stack stack ); 91 92 FT_LOCAL( CF2_Fixed ) 93 cf2_stack_getReal( CF2_Stack stack, 94 CF2_UInt idx ); 95 96 FT_LOCAL( void ) 97 cf2_stack_clear( CF2_Stack stack ); 98 99 100 FT_END_HEADER 101 102 103 #endif /* __CF2STACK_H__ */ 104 105 106 /* END */ 107
