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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /***************************************************************************/ |
| 2 | /* */ |
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| 3 | /* ftmisc.h */ |
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| 4 | /* */ |
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| 5 | /* Miscellaneous macros for stand-alone rasterizer (specification */ |
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| 6 | /* only). */ |
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| 7 | /* */ |
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| 8 | /* Copyright 2005, 2009, 2010 by */ |
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| 9 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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| 10 | /* */ |
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| 11 | /* This file is part of the FreeType project, and may only be used */ |
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| 12 | /* modified and distributed under the terms of the FreeType project */ |
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| 13 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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| 14 | /* this file you indicate that you have read the license and */ |
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| 15 | /* understand and accept it fully. */ |
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| 16 | /* */ |
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| 17 | /***************************************************************************/ |
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| 18 | |||
| 19 | |||
| 20 | /***************************************************/ |
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| 21 | /* */ |
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| 22 | /* This file is *not* portable! You have to adapt */ |
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| 23 | /* its definitions to your platform. */ |
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| 24 | /* */ |
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| 25 | /***************************************************/ |
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| 26 | |||
| 27 | #ifndef __FTMISC_H__ |
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| 28 | #define __FTMISC_H__ |
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| 29 | |||
| 30 | |||
| 31 | /* memset */ |
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| 32 | #include FT_CONFIG_STANDARD_LIBRARY_H |
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| 33 | |||
| 34 | #define FT_BEGIN_HEADER |
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| 35 | #define FT_END_HEADER |
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| 36 | |||
| 37 | #define FT_LOCAL_DEF( x ) static x |
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| 38 | |||
| 39 | |||
| 40 | /* from include/freetype2/fttypes.h */ |
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| 41 | |||
| 42 | typedef unsigned char FT_Byte; |
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| 43 | typedef signed int FT_Int; |
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| 44 | typedef unsigned int FT_UInt; |
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| 45 | typedef signed long FT_Long; |
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| 46 | typedef unsigned long FT_ULong; |
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| 47 | typedef signed long FT_F26Dot6; |
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| 48 | typedef int FT_Error; |
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| 49 | |||
| 50 | #define FT_MAKE_TAG( _x1, _x2, _x3, _x4 ) \ |
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| 51 | ( ( (FT_ULong)_x1 << 24 ) | \ |
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| 52 | ( (FT_ULong)_x2 << 16 ) | \ |
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| 53 | ( (FT_ULong)_x3 << 8 ) | \ |
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| 54 | (FT_ULong)_x4 ) |
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| 55 | |||
| 56 | |||
| 57 | /* from include/freetype2/ftsystem.h */ |
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| 58 | |||
| 59 | typedef struct FT_MemoryRec_* FT_Memory; |
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| 60 | |||
| 61 | typedef void* (*FT_Alloc_Func)( FT_Memory memory, |
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| 62 | long size ); |
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| 63 | |||
| 64 | typedef void (*FT_Free_Func)( FT_Memory memory, |
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| 65 | void* block ); |
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| 66 | |||
| 67 | typedef void* (*FT_Realloc_Func)( FT_Memory memory, |
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| 68 | long cur_size, |
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| 69 | long new_size, |
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| 70 | void* block ); |
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| 71 | |||
| 72 | typedef struct FT_MemoryRec_ |
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| 73 | { |
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| 74 | void* user; |
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| 75 | |||
| 76 | FT_Alloc_Func alloc; |
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| 77 | FT_Free_Func free; |
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| 78 | FT_Realloc_Func realloc; |
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| 79 | |||
| 80 | } FT_MemoryRec; |
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| 81 | |||
| 82 | |||
| 83 | /* from src/ftcalc.c */ |
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| 84 | |||
| 85 | #if ( defined _WIN32 || defined _WIN64 ) |
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| 86 | |||
| 87 | typedef __int64 FT_Int64; |
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| 88 | |||
| 89 | #else |
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| 90 | |||
| 91 | #include "inttypes.h" |
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| 92 | |||
| 93 | typedef int64_t FT_Int64; |
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| 94 | |||
| 95 | #endif |
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| 96 | |||
| 97 | |||
| 98 | static FT_Long |
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| 99 | FT_MulDiv( FT_Long a, |
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| 100 | FT_Long b, |
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| 101 | FT_Long c ) |
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| 102 | { |
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| 103 | FT_Int s; |
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| 104 | FT_Long d; |
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| 105 | |||
| 106 | |||
| 107 | s = 1; |
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| 108 | if ( a < 0 ) { a = -a; s = -1; } |
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| 109 | if ( b < 0 ) { b = -b; s = -s; } |
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| 110 | if ( c < 0 ) { c = -c; s = -s; } |
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| 111 | |||
| 112 | d = (FT_Long)( c > 0 ? ( (FT_Int64)a * b + ( c >> 1 ) ) / c |
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| 113 | : 0x7FFFFFFFL ); |
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| 114 | |||
| 115 | return ( s > 0 ) ? d : -d; |
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| 116 | } |
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| 117 | |||
| 118 | |||
| 119 | static FT_Long |
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| 120 | FT_MulDiv_No_Round( FT_Long a, |
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| 121 | FT_Long b, |
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| 122 | FT_Long c ) |
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| 123 | { |
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| 124 | FT_Int s; |
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| 125 | FT_Long d; |
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| 126 | |||
| 127 | |||
| 128 | s = 1; |
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| 129 | if ( a < 0 ) { a = -a; s = -1; } |
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| 130 | if ( b < 0 ) { b = -b; s = -s; } |
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| 131 | if ( c < 0 ) { c = -c; s = -s; } |
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| 132 | |||
| 133 | d = (FT_Long)( c > 0 ? (FT_Int64)a * b / c |
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| 134 | : 0x7FFFFFFFL ); |
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| 135 | |||
| 136 | return ( s > 0 ) ? d : -d; |
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| 137 | } |
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| 138 | |||
| 139 | #endif /* __FTMISC_H__ */ |
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| 140 | |||
| 141 | |||
| 142 | /* END */ |