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Utils.h

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00001 // ZenLib::Utils - Very small utilities
00002 // Copyright (C) 2002-2010 MediaArea.net SARL, Info@MediaArea.net
00003 //
00004 // This software is provided 'as-is', without any express or implied
00005 // warranty.  In no event will the authors be held liable for any damages
00006 // arising from the use of this software.
00007 //
00008 // Permission is granted to anyone to use this software for any purpose,
00009 // including commercial applications, and to alter it and redistribute it
00010 // freely, subject to the following restrictions:
00011 //
00012 // 1. The origin of this software must not be misrepresented; you must not
00013 //    claim that you wrote the original software. If you use this software
00014 //    in a product, an acknowledgment in the product documentation would be
00015 //    appreciated but is not required.
00016 // 2. Altered source versions must be plainly marked as such, and must not be
00017 //    misrepresented as being the original software.
00018 // 3. This notice may not be removed or altered from any source distribution.
00019 //
00020 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
00021 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
00022 //
00023 // Integer and float manipulation
00024 //
00025 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
00026 
00027 //---------------------------------------------------------------------------
00028 #ifndef ZenUtilsH
00029 #define ZenUtilsH
00030 //---------------------------------------------------------------------------
00031 
00032 //---------------------------------------------------------------------------
00033 #include "ZenLib/Conf.h"
00034 #include "ZenLib/int128u.h"
00035 //---------------------------------------------------------------------------
00036 
00037 namespace ZenLib
00038 {
00039 
00040 //***************************************************************************
00041 // Integer transformations
00042 //***************************************************************************
00043 
00044 //---------------------------------------------------------------------------
00045 //Little Endians
00046 int8s  LittleEndian2int8s  (const char* List);
00047 int8u  LittleEndian2int8u  (const char* List);
00048 int16s LittleEndian2int16s (const char* List);
00049 int16u LittleEndian2int16u (const char* List);
00050 int32s LittleEndian2int24s (const char* List);
00051 int32u LittleEndian2int24u (const char* List);
00052 int32s LittleEndian2int32s (const char* List);
00053 int32u LittleEndian2int32u (const char* List);
00054 #if (MAXTYPE_INT >= 64)
00055 int64s LittleEndian2int40s (const char* List);
00056 int64u LittleEndian2int40u (const char* List);
00057 int64s LittleEndian2int48s (const char* List);
00058 int64u LittleEndian2int48u (const char* List);
00059 int64s LittleEndian2int56s (const char* List);
00060 int64u LittleEndian2int56u (const char* List);
00061 int64s LittleEndian2int64s (const char* List);
00062 int64u LittleEndian2int64u (const char* List);
00063 int128u LittleEndian2int128u (const char* List);
00064 #endif
00065 float32 LittleEndian2float32 (const char* List);
00066 float64 LittleEndian2float64 (const char* List);
00067 float80 LittleEndian2float80 (const char* List);
00068 
00069 void   int8s2LittleEndian     (char* List, int8s  Value);
00070 void   int8u2LittleEndian     (char* List, int8u  Value);
00071 void   int16s2LittleEndian    (char* List, int16s Value);
00072 void   int16u2LittleEndian    (char* List, int16u Value);
00073 void   int24s2LittleEndian    (char* List, int32s Value);
00074 void   int24u2LittleEndian    (char* List, int32u Value);
00075 void   int32s2LittleEndian    (char* List, int32s Value);
00076 void   int32u2LittleEndian    (char* List, int32u Value);
00077 #if (MAXTYPE_INT >= 64)
00078 void   int40s2LittleEndian    (char* List, int64s Value);
00079 void   int40u2LittleEndian    (char* List, int64u Value);
00080 void   int48s2LittleEndian    (char* List, int64s Value);
00081 void   int48u2LittleEndian    (char* List, int64u Value);
00082 void   int56s2LittleEndian    (char* List, int64s Value);
00083 void   int56u2LittleEndian    (char* List, int64u Value);
00084 void   int64s2LittleEndian    (char* List, int64s Value);
00085 void   int64u2LittleEndian    (char* List, int64u Value);
00086 void   int128u2LittleEndian   (char* List, int128u Value);
00087 #endif
00088 void   float322LittleEndian   (char* List, float32 Value);
00089 void   float642LittleEndian   (char* List, float64 Value);
00090 void   float802LittleEndian   (char* List, float80 Value);
00091 
00092 #ifndef __BORLANDC__
00093 inline int8s  LittleEndian2int8s  (const int8u* List) {return LittleEndian2int8s  ((const char*)List);}
00094 inline int8u  LittleEndian2int8u  (const int8u* List) {return LittleEndian2int8u  ((const char*)List);}
00095 inline int16s LittleEndian2int16s (const int8u* List) {return LittleEndian2int16s ((const char*)List);}
00096 inline int16u LittleEndian2int16u (const int8u* List) {return LittleEndian2int16u ((const char*)List);}
00097 inline int32s LittleEndian2int24s (const int8u* List) {return LittleEndian2int24s ((const char*)List);}
00098 inline int32u LittleEndian2int24u (const int8u* List) {return LittleEndian2int24u ((const char*)List);}
00099 inline int32s LittleEndian2int32s (const int8u* List) {return LittleEndian2int32s ((const char*)List);}
00100 inline int32u LittleEndian2int32u (const int8u* List) {return LittleEndian2int32u ((const char*)List);}
00101 #if (MAXTYPE_INT >= 64)
00102 inline int64s LittleEndian2int40s (const int8u* List) {return LittleEndian2int40s ((const char*)List);}
00103 inline int64u LittleEndian2int40u (const int8u* List) {return LittleEndian2int40u ((const char*)List);}
00104 inline int64s LittleEndian2int48s (const int8u* List) {return LittleEndian2int48s ((const char*)List);}
00105 inline int64u LittleEndian2int48u (const int8u* List) {return LittleEndian2int48u ((const char*)List);}
00106 inline int64s LittleEndian2int56s (const int8u* List) {return LittleEndian2int56s ((const char*)List);}
00107 inline int64u LittleEndian2int56u (const int8u* List) {return LittleEndian2int56u ((const char*)List);}
00108 inline int64s LittleEndian2int64s (const int8u* List) {return LittleEndian2int64s ((const char*)List);}
00109 inline int64u LittleEndian2int64u (const int8u* List) {return LittleEndian2int64u ((const char*)List);}
00110 inline int128u LittleEndian2int128u (const int8u* List) {return LittleEndian2int64u ((const char*)List);}
00111 #endif
00112 inline float32 LittleEndian2float32 (const int8u* List) {return LittleEndian2float32 ((const char*)List);}
00113 inline float64 LittleEndian2float64 (const int8u* List) {return LittleEndian2float64 ((const char*)List);}
00114 inline float80 LittleEndian2float80 (const int8u* List) {return LittleEndian2float80 ((const char*)List);}
00115 
00116 inline void   int8s2LittleEndian     (int8u* List, int8s  Value) {return int8s2LittleEndian    ((char*)List, Value);}
00117 inline void   int8u2LittleEndian     (int8u* List, int8u  Value) {return int8u2LittleEndian    ((char*)List, Value);}
00118 inline void   int16s2LittleEndian    (int8u* List, int16s Value) {return int16s2LittleEndian   ((char*)List, Value);}
00119 inline void   int16u2LittleEndian    (int8u* List, int16u Value) {return int16u2LittleEndian   ((char*)List, Value);}
00120 inline void   int24s2LittleEndian    (int8u* List, int32s Value) {return int24s2LittleEndian   ((char*)List, Value);}
00121 inline void   int24u2LittleEndian    (int8u* List, int32u Value) {return int24u2LittleEndian   ((char*)List, Value);}
00122 inline void   int32s2LittleEndian    (int8u* List, int32s Value) {return int32s2LittleEndian   ((char*)List, Value);}
00123 inline void   int32u2LittleEndian    (int8u* List, int32u Value) {return int32u2LittleEndian   ((char*)List, Value);}
00124 #if (MAXTYPE_INT >= 64)
00125 inline void   int40s2LittleEndian    (int8u* List, int64s Value) {return int40s2LittleEndian   ((char*)List, Value);}
00126 inline void   int40u2LittleEndian    (int8u* List, int64u Value) {return int40u2LittleEndian   ((char*)List, Value);}
00127 inline void   int48s2LittleEndian    (int8u* List, int64s Value) {return int48s2LittleEndian   ((char*)List, Value);}
00128 inline void   int48u2LittleEndian    (int8u* List, int64u Value) {return int48u2LittleEndian   ((char*)List, Value);}
00129 inline void   int56s2LittleEndian    (int8u* List, int64s Value) {return int56s2LittleEndian   ((char*)List, Value);}
00130 inline void   int56u2LittleEndian    (int8u* List, int64u Value) {return int56u2LittleEndian   ((char*)List, Value);}
00131 inline void   int64s2LittleEndian    (int8u* List, int64s Value) {return int64s2LittleEndian   ((char*)List, Value);}
00132 inline void   int64u2LittleEndian    (int8u* List, int64u Value) {return int64u2LittleEndian   ((char*)List, Value);}
00133 inline void   int128u2LittleEndian   (int8u* List, int128u Value) {return int128u2LittleEndian ((char*)List, Value);}
00134 #endif
00135 inline void   float322LittleEndian   (int8u* List, float32 Value) {return float322LittleEndian ((char*)List, Value);}
00136 inline void   float642LittleEndian   (int8u* List, float64 Value) {return float642LittleEndian ((char*)List, Value);}
00137 inline void   float802LittleEndian   (int8u* List, float80 Value) {return float802LittleEndian ((char*)List, Value);}
00138 #endif //__BORLANDC__
00139 
00140 //---------------------------------------------------------------------------
00141 //Big Endians
00142 int8s  BigEndian2int8s     (const char* List);
00143 int8u  BigEndian2int8u     (const char* List);
00144 int16s BigEndian2int16s    (const char* List);
00145 int16u BigEndian2int16u    (const char* List);
00146 int32s BigEndian2int24s    (const char* List);
00147 int32u BigEndian2int24u    (const char* List);
00148 int32s BigEndian2int32s    (const char* List);
00149 int32u BigEndian2int32u    (const char* List);
00150 #if (MAXTYPE_INT >= 64)
00151 int64s BigEndian2int40s    (const char* List);
00152 int64u BigEndian2int40u    (const char* List);
00153 int64s BigEndian2int48s    (const char* List);
00154 int64u BigEndian2int48u    (const char* List);
00155 int64s BigEndian2int56s    (const char* List);
00156 int64u BigEndian2int56u    (const char* List);
00157 int64s BigEndian2int64s    (const char* List);
00158 int64u BigEndian2int64u    (const char* List);
00159 int128u BigEndian2int128u  (const char* List);
00160 #endif
00161 float32 BigEndian2float32  (const char* List);
00162 float64 BigEndian2float64  (const char* List);
00163 float80 BigEndian2float80  (const char* List);
00164 
00165 void   int8s2BigEndian     (char* List, int8s  Value);
00166 void   int8u2BigEndian     (char* List, int8u  Value);
00167 void   int16s2BigEndian    (char* List, int16s Value);
00168 void   int16u2BigEndian    (char* List, int16u Value);
00169 void   int24s2BigEndian    (char* List, int32s Value);
00170 void   int24u2BigEndian    (char* List, int32u Value);
00171 void   int32s2BigEndian    (char* List, int32s Value);
00172 void   int32u2BigEndian    (char* List, int32u Value);
00173 #if (MAXTYPE_INT >= 64)
00174 void   int40s2BigEndian    (char* List, int64s Value);
00175 void   int40u2BigEndian    (char* List, int64u Value);
00176 void   int48s2BigEndian    (char* List, int64s Value);
00177 void   int48u2BigEndian    (char* List, int64u Value);
00178 void   int56s2BigEndian    (char* List, int64s Value);
00179 void   int56u2BigEndian    (char* List, int64u Value);
00180 void   int64s2BigEndian    (char* List, int64s Value);
00181 void   int64u2BigEndian    (char* List, int64u Value);
00182 void   int128u2BigEndian   (char* List, int128u Value);
00183 #endif
00184 void   float322BigEndian   (char* List, float32 Value);
00185 void   float642BigEndian   (char* List, float64 Value);
00186 void   float802BigEndian   (char* List, float80 Value);
00187 
00188 #ifndef __BORLANDC__
00189 inline int8s  BigEndian2int8s     (const int8u* List) {return BigEndian2int8s     ((const char*)List);}
00190 inline int8u  BigEndian2int8u     (const int8u* List) {return BigEndian2int8u     ((const char*)List);}
00191 inline int16s BigEndian2int16s    (const int8u* List) {return BigEndian2int16s    ((const char*)List);}
00192 inline int16u BigEndian2int16u    (const int8u* List) {return BigEndian2int16u    ((const char*)List);}
00193 inline int32s BigEndian2int32s    (const int8u* List) {return BigEndian2int32s    ((const char*)List);}
00194 inline int32u BigEndian2int24u    (const int8u* List) {return BigEndian2int24u    ((const char*)List);}
00195 inline int32s BigEndian2int24s    (const int8u* List) {return BigEndian2int24s    ((const char*)List);}
00196 inline int32u BigEndian2int32u    (const int8u* List) {return BigEndian2int32u    ((const char*)List);}
00197 #if (MAXTYPE_INT >= 64)
00198 inline int64s BigEndian2int40s    (const int8u* List) {return BigEndian2int40s    ((const char*)List);}
00199 inline int64u BigEndian2int40u    (const int8u* List) {return BigEndian2int40u    ((const char*)List);}
00200 inline int64s BigEndian2int48s    (const int8u* List) {return BigEndian2int48s    ((const char*)List);}
00201 inline int64u BigEndian2int48u    (const int8u* List) {return BigEndian2int48u    ((const char*)List);}
00202 inline int64s BigEndian2int56s    (const int8u* List) {return BigEndian2int56s    ((const char*)List);}
00203 inline int64u BigEndian2int56u    (const int8u* List) {return BigEndian2int56u    ((const char*)List);}
00204 inline int64s BigEndian2int64s    (const int8u* List) {return BigEndian2int64s    ((const char*)List);}
00205 inline int64u BigEndian2int64u    (const int8u* List) {return BigEndian2int64u    ((const char*)List);}
00206 inline int128u BigEndian2int128u  (const int8u* List) {return BigEndian2int128u   ((const char*)List);}
00207 #endif
00208 inline float32 BigEndian2float32  (const int8u* List) {return BigEndian2float32   ((const char*)List);}
00209 inline float64 BigEndian2float64  (const int8u* List) {return BigEndian2float64   ((const char*)List);}
00210 inline float80 BigEndian2float80  (const int8u* List) {return BigEndian2float80   ((const char*)List);}
00211 
00212 inline void   int8s2BigEndian     (int8u* List, int8s  Value) {return int8s2BigEndian    ((char*)List, Value);}
00213 inline void   int8u2BigEndian     (int8u* List, int8u  Value) {return int8u2BigEndian    ((char*)List, Value);}
00214 inline void   int16s2BigEndian    (int8u* List, int16s Value) {return int16s2BigEndian   ((char*)List, Value);}
00215 inline void   int16u2BigEndian    (int8u* List, int16u Value) {return int16u2BigEndian   ((char*)List, Value);}
00216 inline void   int24s2BigEndian    (int8u* List, int32s Value) {return int24s2BigEndian   ((char*)List, Value);}
00217 inline void   int24u2BigEndian    (int8u* List, int32u Value) {return int24u2BigEndian   ((char*)List, Value);}
00218 inline void   int32s2BigEndian    (int8u* List, int32s Value) {return int32s2BigEndian   ((char*)List, Value);}
00219 inline void   int32u2BigEndian    (int8u* List, int32u Value) {return int32u2BigEndian   ((char*)List, Value);}
00220 #if (MAXTYPE_INT >= 64)
00221 inline void   int40s2BigEndian    (int8u* List, int64s Value) {return int40s2BigEndian   ((char*)List, Value);}
00222 inline void   int40u2BigEndian    (int8u* List, int64u Value) {return int40u2BigEndian   ((char*)List, Value);}
00223 inline void   int48s2BigEndian    (int8u* List, int64s Value) {return int48s2BigEndian   ((char*)List, Value);}
00224 inline void   int48u2BigEndian    (int8u* List, int64u Value) {return int48u2BigEndian   ((char*)List, Value);}
00225 inline void   int56s2BigEndian    (int8u* List, int64s Value) {return int56s2BigEndian   ((char*)List, Value);}
00226 inline void   int56u2BigEndian    (int8u* List, int64u Value) {return int56u2BigEndian   ((char*)List, Value);}
00227 inline void   int64s2BigEndian    (int8u* List, int64s Value) {return int64s2BigEndian   ((char*)List, Value);}
00228 inline void   int64u2BigEndian    (int8u* List, int64u Value) {return int64u2BigEndian   ((char*)List, Value);}
00229 inline void   int128u2BigEndian   (int8u* List, int128u Value) {return int128u2BigEndian ((char*)List, Value);}
00230 #endif
00231 inline void   float322BigEndian   (int8u* List, float32 Value) {return float322BigEndian ((char*)List, Value);}
00232 inline void   float642BigEndian   (int8u* List, float64 Value) {return float642BigEndian ((char*)List, Value);}
00233 inline void   float802BigEndian   (int8u* List, float80 Value) {return float802BigEndian ((char*)List, Value);}
00234 #endif //__BORLANDC__
00235 
00236 //---------------------------------------------------------------------------
00237 // int32 - int64
00238 int64s int32s_int64s (                int32s  High, int32u  Low);
00239 int64u int32u_int64u (                int32u  High, int32u  Low);
00240 void   int32s_int64s (int64s &BigInt, int32s  High, int32u  Low);
00241 void   int32u_int64u (int64s &BigInt, int32u  High, int32u  Low);
00242 void   int64s_int32s (int64s  BigInt, int32s &High, int32u &Low);
00243 void   int64u_int32u (int64u  BigInt, int32u &High, int32u &Low);
00244 
00245 //---------------------------------------------------------------------------
00246 // Floats and ints
00247 int32s float32_int32s  (float32 F, bool Rounded=true);
00248 int64s float32_int64s  (float32 F, bool Rounded=true);
00249 int32s float64_int32s  (float64 F, bool Rounded=true);
00250 int64s float64_int64s  (float64 F, bool Rounded=true);
00251 
00252 // These functions are used because MSVC6 isn't able to convert an unsigned int64 to a floating-point value, and I couldn't think of a cleaner way to handle it.
00253 #if defined(_MSC_VER) && _MSC_VER<=1200
00254     inline float32 int64u_float32 (int64u v) {return static_cast<float32>(static_cast<int64s>(v>>1))*2.0f + static_cast<float32>(static_cast<int64s>(v & 1));}
00255     inline float64 int64u_float64 (int64u v) {return static_cast<float64>(static_cast<int64s>(v>>1))*2.0f + static_cast<float32>(static_cast<int64s>(v & 1));}
00256 #else
00257     inline float32 int64u_float32 (int64u v) {return (float32)v;}
00258     inline float64 int64u_float64 (int64u v) {return (float64)v;}
00259 #endif // defined(_MSC_VER) && _MSC_VER<=1200
00260 
00261 //---------------------------------------------------------------------------
00262 // CC (often used in all containers to identify a stream
00263 inline int64u CC8(const char*  C) {return BigEndian2int64u(C);}
00264 inline int64u CC7(const char*  C) {return BigEndian2int56u(C);}
00265 inline int64u CC6(const char*  C) {return BigEndian2int48u(C);}
00266 inline int64u CC5(const char*  C) {return BigEndian2int40u(C);}
00267 inline int32u CC4(const char*  C) {return BigEndian2int32u(C);}
00268 inline int32u CC3(const char*  C) {return BigEndian2int24u(C);}
00269 inline int16u CC2(const char*  C) {return BigEndian2int16u(C);}
00270 inline int8u  CC1(const char*  C) {return BigEndian2int8u (C);}
00271 #ifndef __BORLANDC__
00272 inline int64u CC8(const int8u* C) {return BigEndian2int64u(C);}
00273 inline int64u CC7(const int8u* C) {return BigEndian2int56u(C);}
00274 inline int64u CC6(const int8u* C) {return BigEndian2int48u(C);}
00275 inline int64u CC5(const int8u* C) {return BigEndian2int40u(C);}
00276 inline int32u CC4(const int8u* C) {return BigEndian2int32u(C);}
00277 inline int32u CC3(const int8u* C) {return BigEndian2int24u(C);}
00278 inline int16u CC2(const int8u* C) {return BigEndian2int16u(C);}
00279 inline int8u  CC1(const int8u* C) {return BigEndian2int8u (C);}
00280 #endif // __BORLANDC__
00281 
00282 //---------------------------------------------------------------------------
00283 // turn a numeric literal into a hex constant
00284 // (avoids problems with leading zeroes)
00285 // 8-bit constants max value 0x11111111, always fits in unsigned long
00286 #define HEX__(n) 0x##n##LU
00287 
00288 // 8-bit conversion function
00289 #define B8__(x) ((x&0x0000000FLU)?0x01:0) \
00290                +((x&0x000000F0LU)?0x02:0) \
00291                +((x&0x00000F00LU)?0x04:0) \
00292                +((x&0x0000F000LU)?0x08:0) \
00293                +((x&0x000F0000LU)?0x10:0) \
00294                +((x&0x00F00000LU)?0x20:0) \
00295                +((x&0x0F000000LU)?0x40:0) \
00296                +((x&0xF0000000LU)?0x80:0)
00297 
00298 // for upto 8-bit binary constants
00299 #define B8(d) ((int8u)B8__(HEX__(d)))
00300 
00301 // for upto 16-bit binary constants, MSB first
00302 #define B16(dmsb, dlsb) (((int16u)B8(dmsb)<<8) \
00303                        + ((int16u)B8(dlsb)<<0))
00304 
00305 // for upto 32-bit binary constants, MSB first
00306 #define B32(dmsb, db2, db3, dlsb) (((int32u)B8(dmsb)<<24) \
00307                                  + ((int32u)B8( db2)<<16) \
00308                                  + ((int32u)B8( db3)<< 8) \
00309                                  + ((int32u)B8(dlsb)<< 0))
00310 
00311 } //namespace ZenLib
00312 #endif

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