1 /**************************************************************************** 2 * 3 * ftmisc.h 4 * 5 * Miscellaneous macros for stand-alone rasterizer (specification 6 * only). 7 * 8 * Copyright 2005-2018 by 9 * David Turner, Robert Wilhelm, and Werner Lemberg. 10 * 11 * This file is part of the FreeType project, and may only be used 12 * modified and distributed under the terms of the FreeType project 13 * license, LICENSE.TXT. By continuing to use, modify, or distribute 14 * this file you indicate that you have read the license and 15 * understand and accept it fully. 16 * 17 */ 18 19 20 /**************************************************** 21 * 22 * This file is *not* portable! You have to adapt 23 * its definitions to your platform. 24 * 25 */ 26 27 #ifndef FTMISC_H_ 28 #define FTMISC_H_ 29 30 31 /* memset */ 32 #include FT_CONFIG_STANDARD_LIBRARY_H 33 34 #define FT_BEGIN_HEADER 35 #define FT_END_HEADER 36 37 #define FT_LOCAL_DEF( x ) static x 38 39 40 /* from include/freetype/fttypes.h */ 41 42 typedef unsigned char FT_Byte; 43 typedef signed int FT_Int; 44 typedef unsigned int FT_UInt; 45 typedef signed long FT_Long; 46 typedef unsigned long FT_ULong; 47 typedef signed long FT_F26Dot6; 48 typedef int FT_Error; 49 50 #define FT_MAKE_TAG( _x1, _x2, _x3, _x4 ) \ 51 ( ( (FT_ULong)_x1 << 24 ) | \ 52 ( (FT_ULong)_x2 << 16 ) | \ 53 ( (FT_ULong)_x3 << 8 ) | \ 54 (FT_ULong)_x4 ) 55 56 57 /* from include/freetype/ftsystem.h */ 58 59 typedef struct FT_MemoryRec_* FT_Memory; 60 61 typedef void* (*FT_Alloc_Func)( FT_Memory memory, 62 long size ); 63 64 typedef void (*FT_Free_Func)( FT_Memory memory, 65 void* block ); 66 67 typedef void* (*FT_Realloc_Func)( FT_Memory memory, 68 long cur_size, 69 long new_size, 70 void* block ); 71 72 typedef struct FT_MemoryRec_ 73 { 74 void* user; 75 76 FT_Alloc_Func alloc; 77 FT_Free_Func free; 78 FT_Realloc_Func realloc; 79 80 } FT_MemoryRec; 81 82 83 /* from src/ftcalc.c */ 84 85 #if ( defined _WIN32 || defined _WIN64 ) 86 87 typedef __int64 FT_Int64; 88 89 #else 90 91 #include "inttypes.h" 92 93 typedef int64_t FT_Int64; 94 95 #endif 96 97 98 static FT_Long 99 FT_MulDiv( FT_Long a, 100 FT_Long b, 101 FT_Long c ) 102 { 103 FT_Int s; 104 FT_Long d; 105 106 107 s = 1; 108 if ( a < 0 ) { a = -a; s = -1; } 109 if ( b < 0 ) { b = -b; s = -s; } 110 if ( c < 0 ) { c = -c; s = -s; } 111 112 d = (FT_Long)( c > 0 ? ( (FT_Int64)a * b + ( c >> 1 ) ) / c 113 : 0x7FFFFFFFL ); 114 115 return ( s > 0 ) ? d : -d; 116 } 117 118 119 static FT_Long 120 FT_MulDiv_No_Round( FT_Long a, 121 FT_Long b, 122 FT_Long c ) 123 { 124 FT_Int s; 125 FT_Long d; 126 127 128 s = 1; 129 if ( a < 0 ) { a = -a; s = -1; } 130 if ( b < 0 ) { b = -b; s = -s; } 131 if ( c < 0 ) { c = -c; s = -s; } 132 133 d = (FT_Long)( c > 0 ? (FT_Int64)a * b / c 134 : 0x7FFFFFFFL ); 135 136 return ( s > 0 ) ? d : -d; 137 } 138 139 #endif /* FTMISC_H_ */ 140 141 142 /* END */ 143
