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 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 /* PSSTACK_H_ */ 119 120 121 /* END */ 122