thirdparty/freetype-2.3.12/src/raster/ftmisc.h

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  ftmisc.h                                                               */
   4 /*                                                                         */
   5 /*    Miscellaneous macros for stand-alone rasterizer (specification       */
   6 /*    only).                                                               */
   7 /*                                                                         */
   8 /*  Copyright 2005, 2009 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   /* memset */
  31 #include FT_CONFIG_STANDARD_LIBRARY_H
  32
  33 #define FT_BEGIN_HEADER
  34 #define FT_END_HEADER
  35
  36 #define FT_LOCAL_DEF( x )   static x
  37
  38   /* from include/freetype2/fttypes.h */
  39
  40   typedef unsigned char  FT_Byte;
  41   typedef signed int     FT_Int;
  42   typedef unsigned int   FT_UInt;
  43   typedef signed long    FT_Long;
  44   typedef unsigned long  FT_ULong;
  45   typedef signed long    FT_F26Dot6;
  46   typedef int            FT_Error;
  47
  48 #define FT_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
  49           ( ( (FT_ULong)_x1 << 24 ) |     \
  50             ( (FT_ULong)_x2 << 16 ) |     \
  51             ( (FT_ULong)_x3 <<  8 ) |     \
  52               (FT_ULong)_x4         )
  53
  54
  55   /* from include/freetype2/ftsystem.h */
  56
  57   typedef struct FT_MemoryRec_*  FT_Memory;
  58
  59   typedef void* (*FT_Alloc_Func)( FT_Memory  memory,
  60                                   long       size );
  61
  62   typedef void (*FT_Free_Func)( FT_Memory  memory,
  63                                 void*      block );
  64
  65   typedef void* (*FT_Realloc_Func)( FT_Memory  memory,
  66                                     long       cur_size,
  67                                     long       new_size,
  68                                     void*      block );
  69
  70   typedef struct FT_MemoryRec_
  71   {
  72     void*            user;
  73
  74     FT_Alloc_Func    alloc;
  75     FT_Free_Func     free;
  76     FT_Realloc_Func  realloc;
  77
  78   } FT_MemoryRec;
  79
  80   /* from src/ftcalc.c */
  81
  82 #include <inttypes.h>
  83
  84   typedef int64_t  FT_Int64;
  85
  86   static FT_Long
  87   FT_MulDiv( FT_Long  a,
  88              FT_Long  b,
  89              FT_Long  c )
  90   {
  91     FT_Int   s;
  92     FT_Long  d;
  93
  94
  95     s = 1;
  96     if ( a < 0 ) { a = -a; s = -1; }
  97     if ( b < 0 ) { b = -b; s = -s; }
  98     if ( c < 0 ) { c = -c; s = -s; }
  99
 100     d = (FT_Long)( c > 0 ? ( (FT_Int64)a * b + ( c >> 1 ) ) / c
 101                          : 0x7FFFFFFFL );
 102
 103     return ( s > 0 ) ? d : -d;
 104   }
 105
 106 #endif /* __FTMISC_H__ */
 107
 108
 109 /* END */