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1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <stdlib.h> |
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17 #include <malloc.h> |
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18 #include <stdio.h> |
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19 #include <string.h> |
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20 |
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21 #include "h_utl.h" |
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22 |
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23 TAny *HMem::Alloc(TAny * const aBaseAddress,const TUint32 aImageSize) |
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24 { |
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25 if (aBaseAddress != 0) |
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26 { |
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27 Print(EError, "Allocating at a specified address is not supported on this system.\n"); |
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28 return 0; |
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29 } |
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30 |
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31 TAny *address = malloc(aImageSize); |
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32 return (address); |
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33 } |
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34 |
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35 void HMem::Free(TAny * const aMem) |
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36 { |
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37 free(aMem); |
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38 } |
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39 |
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40 void HMem::Copy(TAny * const aDestAddr,const TAny * const aSourceAddr,const TUint32 aLength) |
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41 { |
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42 memcpy(aDestAddr,aSourceAddr,(size_t)aLength); |
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43 } |
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44 |
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45 void HMem::Move(TAny * const aDestAddr,const TAny * const aSourceAddr,const TUint32 aLength) |
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46 { |
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47 memmove(aDestAddr,aSourceAddr,(size_t)aLength); |
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48 } |
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49 |
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50 void HMem::Set(TAny * const aDestAddr, const TUint8 aFillChar, const TUint32 aLength) |
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51 { |
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52 memset(aDestAddr, aFillChar, aLength); |
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53 } |
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54 |
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55 void HMem::FillZ(TAny * const aDestAddr, const TUint32 aLength) |
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56 { |
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57 memset(aDestAddr, 0, aLength); |
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58 } |
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59 |
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60 TUint HMem::CheckSum(TUint *aPtr, TInt aSize) |
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61 { |
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62 TUint sum=0; |
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63 aSize/=4; |
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64 while (aSize-->0) |
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65 sum+=*aPtr++; |
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66 return sum; |
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67 } |
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68 |
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69 TUint HMem::CheckSum8(TUint8 *aPtr, TInt aSize) |
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70 { |
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71 TUint sum=0; |
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72 while (aSize-->0) |
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73 sum+=*aPtr++; |
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74 return sum; |
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75 } |
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76 |
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77 TUint HMem::CheckSumOdd8(TUint8 *aPtr, TInt aSize) |
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78 { |
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79 return CheckSumEven8(aPtr+2, aSize-2); |
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80 } |
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81 |
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82 TUint HMem::CheckSumEven8(TUint8 *aPtr, TInt aSize) |
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83 { |
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84 TUint sum=0; |
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85 while (aSize>0) |
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86 { |
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87 sum+=(TUint)aPtr[0]+aPtr[1]; |
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88 aPtr+=4; |
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89 aSize-=4; |
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90 } |
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91 return sum; |
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92 } |
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93 |
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94 static const TUint32 CrcTab32[256] = |
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95 { |
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96 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, |
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97 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, |
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98 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, |
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99 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, |
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100 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, |
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101 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, |
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102 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, |
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103 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, |
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104 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, |
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105 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, |
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106 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, |
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107 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, |
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108 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, |
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109 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f, |
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110 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, |
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111 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, |
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112 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, |
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113 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, |
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114 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, |
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115 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, |
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116 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, |
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117 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, |
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118 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, |
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119 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, |
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120 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, |
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121 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, |
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122 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, |
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123 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, |
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124 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, |
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125 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, |
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126 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, |
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127 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, |
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128 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, |
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129 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, |
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130 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, |
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131 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, |
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132 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, |
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133 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, |
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134 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, |
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135 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, |
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136 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, |
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137 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, |
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138 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, |
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139 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, |
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140 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, |
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141 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, |
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142 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, |
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143 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, |
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144 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, |
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145 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, |
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146 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, |
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147 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, |
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148 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, |
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149 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, |
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150 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, |
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151 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, |
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152 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, |
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153 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, |
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154 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, |
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155 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, |
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156 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, |
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157 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, |
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158 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, |
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159 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d |
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160 }; |
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161 |
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162 /** |
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163 Performs a CCITT CRC-32 checksum on the specified data. |
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164 |
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165 On return from this function, the referenced 32 bit integer contains the CRC |
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166 value. |
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167 |
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168 @param aCrc A reference to a 32 bit integer to contain the CRC value. |
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169 @param aPtr A pointer to the start of the data to be checksummed. |
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170 @param aLength The length of the data to be checksummed. |
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171 */ |
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172 void HMem::Crc32(TUint32& aCrc, const TAny* aPtr, TInt aLength) |
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173 { |
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174 const TUint8* p = (const TUint8*)aPtr; |
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175 const TUint8* q = p + aLength; |
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176 TUint32 crc = aCrc; |
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177 while (p < q) |
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178 crc = (crc >> 8) ^ CrcTab32[(crc ^ *p++) & 0xff]; |
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179 aCrc = crc; |
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180 } |