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1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - Initial contribution |
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11 * |
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12 * Contributors: |
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13 * Ixonos Plc |
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14 * |
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15 * Description: |
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16 * |
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17 */ |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 #include "CJpRotate.h" |
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24 #include "MJpRotateCallBack.h" |
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25 #include "CExifParser.h" |
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26 |
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27 const TUint8 KZigZag[] = { |
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28 0,8,1,2,9,16,24,17, |
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29 10,3,4,11,18,25,32,40, |
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30 33,26,19,12,5,6,13,20, |
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31 27,34,41,48,56,49,42,35, |
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32 28,21,14,7,15,22,29,36, |
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33 43,50,57,58,51,44,37,30, |
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34 23,31,38,45,52,59,60,53, |
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35 46,39,47,54,61,62,55,63 |
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36 }; |
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37 |
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38 const TUint8 KReZig[] = { |
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39 0,2,1,5,4,3,9,8, |
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40 7,6,14,13,12,11,10,20, |
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41 19,18,17,16,15,27,26,25, |
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42 24,23,22,21,35,34,33,32, |
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43 31,30,29,28,42,41,40,39, |
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44 38,37,36,48,47,46,45,44, |
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45 43,53,52,51,50,49,57,56, |
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46 55,54,60,59,58,62,61,63 |
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47 }; |
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48 |
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49 |
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50 |
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51 |
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52 /* Set up the standard Huffman tables (cf. JPEG standard section K.3) */ |
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53 /* IMPORTANT: these are only valid for 8-bit data precision! */ |
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54 |
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55 const TUint8 bits_dc_luminance[17] = |
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56 { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; |
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57 const TUint8 val_dc_luminance[] = |
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58 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; |
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59 |
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60 const TUint8 bits_dc_chrominance[17] = |
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61 { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; |
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62 const TUint8 val_dc_chrominance[] = |
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63 { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; |
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64 |
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65 const TUint8 bits_ac_luminance[17] = |
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66 { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; |
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67 const TUint8 val_ac_luminance[] = |
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68 { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, |
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69 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, |
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70 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, |
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71 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, |
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72 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, |
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73 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, |
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74 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, |
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75 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, |
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76 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, |
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77 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, |
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78 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, |
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79 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, |
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80 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, |
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81 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
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82 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, |
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83 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, |
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84 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, |
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85 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, |
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86 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, |
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87 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
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88 0xf9, 0xfa |
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89 }; |
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90 |
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91 const TUint8 bits_ac_chrominance[17] = |
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92 { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; |
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93 |
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94 const TUint8 val_ac_chrominance[] = |
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95 { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, |
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96 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, |
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97 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, |
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98 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, |
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99 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, |
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100 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, |
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101 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, |
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102 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, |
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103 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, |
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104 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, |
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105 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, |
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106 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, |
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107 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, |
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108 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, |
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109 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, |
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110 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, |
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111 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, |
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112 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, |
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113 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, |
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114 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, |
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115 0xf9, 0xfa |
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116 }; |
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117 |
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118 const TUint8 KExifHeader[] = "Exif"; |
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119 |
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120 class THuffman |
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121 { |
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122 public: |
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123 TInt8 iLength[ 256 ]; |
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124 TUint8 iSymbol[ 256 ]; |
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125 TUint8 iSearch[ 65536 ]; |
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126 }; |
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127 |
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128 |
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129 CJpRotate* CJpRotate::NewL( RFs& aFs, RFile* aSaveFile, TInt aSaveBufSize ) |
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130 { |
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131 CJpRotate* self = NewLC( aFs, aSaveFile, aSaveBufSize ); |
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132 CleanupStack::Pop( self ); |
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133 return self; |
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134 } |
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135 |
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136 |
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137 CJpRotate* CJpRotate::NewLC( RFs& aFs, RFile* aSaveFile, TInt aSaveBufSize ) |
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138 { |
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139 CJpRotate* self = new( ELeave )CJpRotate( aFs, aSaveFile, aSaveBufSize ); |
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140 CleanupStack::PushL( self ); |
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141 self->ConstructL(); |
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142 return self; |
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143 } |
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144 |
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145 |
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146 CJpRotate::~CJpRotate() |
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147 { |
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148 delete iHuffman[ 0 ]; |
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149 delete iHuffman[ 1 ]; |
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150 delete iHuffman[ 2 ]; |
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151 delete iHuffman[ 3 ]; |
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152 |
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153 delete iSaveHuffman[ 0 ]; |
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154 delete iSaveHuffman[ 1 ]; |
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155 delete iSaveHuffman[ 2 ]; |
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156 delete iSaveHuffman[ 3 ]; |
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157 |
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158 delete iQt[ 0 ]; |
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159 delete iQt[ 1 ]; |
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160 delete iQt[ 2 ]; |
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161 delete iQt[ 3 ]; |
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162 |
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163 if( iOwnBuffer ) |
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164 { |
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165 delete iBuffer; |
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166 } |
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167 delete iSaveBuf; |
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168 iBasicBlock.Reset(); |
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169 |
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170 if( &iSaveFile != NULL ) |
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171 { |
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172 iSaveFile.Flush(); |
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173 iSaveFile.Close(); |
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174 } |
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175 } |
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176 |
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177 CJpRotate::CJpRotate( RFs& aFs, RFile* aSaveFile, TInt aSaveBufSize ) |
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178 : iCancelled(EFalse) |
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179 , iFs( aFs ) |
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180 , iSaveFile( *aSaveFile ) |
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181 , iSaveBufSize( aSaveBufSize ) |
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182 { |
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183 |
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184 } |
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185 |
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186 void CJpRotate::ConstructL() |
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187 { |
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188 } |
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189 |
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190 |
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191 |
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192 void CJpRotate::SetCallBack( MJpRotateCallBack* aCallBack ) |
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193 { |
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194 iCallBack = aCallBack; |
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195 } |
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196 |
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197 void CJpRotate::Cancel() |
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198 { |
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199 iCancelled = ETrue; |
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200 } |
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201 |
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202 |
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203 |
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204 void CJpRotate::RotateL( const TFileName& aFile, TBool aRotate, TBool aFlip, TBool aMirror ) |
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205 { |
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206 |
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207 iCancelled = EFalse; |
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208 |
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209 if (iBuffer) |
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210 { |
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211 delete iBuffer; |
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212 iBuffer = NULL; |
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213 } |
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214 |
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215 RFile file; |
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216 TInt err = file.Open( iFs, aFile, EFileRead | EFileShareReadersOnly ); |
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217 if (KErrNone != err) |
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218 { |
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219 User::LeaveIfError( file.Open( iFs, aFile, EFileRead | EFileShareAny ) ); |
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220 } |
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221 CleanupClosePushL( file ); |
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222 |
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223 TInt size; |
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224 file.Size( size ); |
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225 iOwnBuffer = true; |
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226 iBuffer = new( ELeave )TUint8[ size + 2 ]; |
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227 TPtr8 ptr( iBuffer, size ); |
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228 file.Read( ptr ); |
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229 |
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230 CleanupStack::PopAndDestroy( 1 ); // file |
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231 RotateL( ptr, aRotate, aFlip, aMirror ); |
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232 } |
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233 |
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234 |
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235 |
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236 void CJpRotate::RotateL( const TPtrC8& aData, TPtrC8& aTarget, TBool aRotate, TBool aFlip, TBool aMirror ) |
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237 { |
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238 iOwnBuffer = false; |
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239 RotateL( aData, aRotate, aFlip, aMirror ); |
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240 |
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241 aTarget.Set( iSaveBuf, iSaveBufPos ); |
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242 } |
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243 |
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244 |
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245 |
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246 void CJpRotate::RotateL( const TPtrC8& aData, TBool aRotate, TBool aFlip, TBool aMirror ) |
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247 { |
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248 |
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249 iFlip = aFlip; |
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250 iMirror = aMirror; |
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251 iRotate = aRotate; |
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252 if( iRotate ) |
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253 { |
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254 if( iFlip ) |
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255 { |
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256 iFlip = false; |
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257 } |
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258 else |
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259 { |
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260 iFlip = true; |
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261 } |
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262 } |
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263 |
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264 |
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265 iBuffer = (TUint8*)aData.Ptr(); |
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266 |
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267 iSaveBuf = new( ELeave )TUint8[ iSaveBufSize ]; |
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268 //Mem::FillZ( iSaveBuf, iS ); |
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269 iSaveByte = 0; |
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270 iSaveBufPos = 0; |
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271 iSaveBufBitPos = 0; |
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272 |
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273 // if used again, all variables should be cleared |
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274 iBuf = 0; |
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275 iBufBits = 0; |
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276 |
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277 delete iHuffman[ 0 ]; |
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278 delete iHuffman[ 1 ]; |
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279 delete iHuffman[ 2 ]; |
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280 delete iHuffman[ 3 ]; |
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281 iHuffman[ 0 ] = 0; |
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282 iHuffman[ 1 ] = 0; |
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283 iHuffman[ 2 ] = 0; |
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284 iHuffman[ 3 ] = 0; |
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285 //CreateDefaultHuffmanL(); |
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286 |
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287 |
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288 iQt[ 0 ] = 0; |
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289 iQt[ 1 ] = 0; |
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290 iQt[ 2 ] = 0; |
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291 iQt[ 3 ] = 0; |
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292 |
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293 |
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294 TBool moreChunks = ETrue; |
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295 TBool possibleChunk = EFalse; |
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296 |
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297 while( moreChunks ) |
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298 { |
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299 if (iCancelled) |
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300 { |
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301 return; |
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302 } |
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303 |
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304 TUint8 b = iBuffer[ iBufPos++ ]; |
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305 if( possibleChunk ) |
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306 { |
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307 possibleChunk = EFalse; |
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308 switch( b ) |
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309 { |
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310 case 0xd8: // start of image |
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311 { |
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312 WriteSaveBuffer( (TUint16)0xffd8 ); |
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313 break; |
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314 } |
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315 case 0xe0: // JFIF application segment |
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316 { |
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317 WriteSaveBuffer( (TUint16)0xffe0 ); |
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318 TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
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319 WriteSaveBuffer( (TUint16)l ); |
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320 WriteSaveBuffer( iBuffer + iBufPos, l-2 ); |
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321 iBufPos += l-2; |
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322 break; |
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323 } |
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324 case 0xe1: // APP1 segment, possible EXIF |
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325 { |
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326 |
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327 TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; |
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328 iBufPos += 2; |
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329 l -= 2; |
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330 |
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331 // Check that there is "Exif" header in the data |
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332 const TUint8* pos = &iBuffer[ iBufPos ]; |
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333 if (Mem::Compare(pos, 2, &KExifHeader[0], 2 )) |
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334 { |
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335 iBufPos += l; |
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336 break; |
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337 } |
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338 |
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339 iBufPos += 6; |
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340 l -= 6; |
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341 |
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342 iExifData = iBuffer + iBufPos; |
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343 iExifDataLength = l; |
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344 |
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345 CExifParser* p = CExifParser::NewLC(); |
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346 |
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347 TRAP_IGNORE(p->ParseL( TPtrC8( iExifData, iExifDataLength ) );); |
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348 |
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349 TPtrC8 thumb( p->ThumbData() ); |
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350 TPtrC8 saveThumb( 0,0 ); |
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351 TUint8* thumbPtr = 0; |
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352 |
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353 |
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354 if( iRotate ) |
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355 { |
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356 // |
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357 // swap width and height ( if exists ) |
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358 // |
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359 if( p->TagExist( CExifParser::ESubIfd, 0xa002 ) && |
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360 p->TagExist( CExifParser::ESubIfd, 0xa003 ) ) |
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361 { |
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362 TUint16 width = p->TagValue( CExifParser::ESubIfd, 0xa002 ); |
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363 TUint16 height = p->TagValue( CExifParser::ESubIfd, 0xa003 ); |
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364 |
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365 p->DeleteTag( CExifParser::ESubIfd, 0xa002 ); |
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366 p->DeleteTag( CExifParser::ESubIfd, 0xa003 ); |
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367 |
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368 p->AddTagL( CExifParser::ESubIfd, 0xa002, height ); |
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369 p->AddTagL( CExifParser::ESubIfd, 0xa003, width ); |
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370 } |
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371 } |
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372 |
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373 // |
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374 // Rotate thumbnail ( if exists ) |
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375 // |
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376 if( thumb.Ptr() ) |
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377 { |
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378 CJpRotate* r = CJpRotate::NewLC( iFs, NULL, 0x10000 ); |
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379 |
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380 TPtrC8 target; |
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381 r->RotateL( thumb, target, aRotate, aFlip, aMirror ); |
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382 |
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383 thumbPtr = new( ELeave )TUint8[ target.Length() ]; |
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384 Mem::Copy( thumbPtr, target.Ptr(), target.Length() ); |
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385 saveThumb.Set( thumbPtr, target.Length() ); |
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386 |
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387 CleanupStack::PopAndDestroy( r ); |
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388 CleanupStack::PushL( thumbPtr ); |
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389 } |
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390 |
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391 |
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392 TPtrC8 exif = p->SaveL( saveThumb ); |
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393 |
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394 WriteSaveBuffer( (TUint16)0xffe1 ); // APP1 segment |
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395 |
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396 TUint16 l2 = exif.Length() + 6 + 2; // +header+tagsize |
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397 WriteSaveBuffer( l2 ); |
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398 |
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399 // exif header is 6 bytes ( 45 78 69 66 00 00 "Exif.." ) |
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400 WriteSaveBuffer( (TUint8)0x45 ); |
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401 WriteSaveBuffer( (TUint8)0x78 ); |
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402 WriteSaveBuffer( (TUint8)0x69 ); |
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403 WriteSaveBuffer( (TUint8)0x66 ); |
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404 WriteSaveBuffer( (TUint8)0x00 ); |
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405 WriteSaveBuffer( (TUint8)0x00 ); |
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406 |
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407 WriteSaveBuffer( exif.Ptr(), exif.Length() ); |
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408 |
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409 if( thumbPtr ) |
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410 { |
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411 CleanupStack::PopAndDestroy( thumbPtr ); |
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412 } |
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413 CleanupStack::PopAndDestroy( p ); |
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414 |
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415 |
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416 iBufPos += l; |
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417 break; |
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418 } |
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419 case 0xe2: |
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420 case 0xe3: |
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421 case 0xe4: |
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422 case 0xe5: |
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423 case 0xe6: |
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424 case 0xe7: |
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425 case 0xe8: |
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426 case 0xe9: |
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427 case 0xea: |
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428 case 0xeb: |
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429 case 0xec: |
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430 case 0xed: |
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431 case 0xee: |
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432 case 0xef: |
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433 { |
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434 WriteSaveBuffer( (TUint8)0xff ); |
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435 WriteSaveBuffer( (TUint8)b ); |
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436 |
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437 TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
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438 WriteSaveBuffer( (TUint16)l ); |
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439 WriteSaveBuffer( iBuffer + iBufPos, l-2 ); |
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440 |
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441 iBufPos += l-2; |
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442 break; |
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443 } |
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444 case 0xdb: // Quantization table |
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445 { |
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446 TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
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447 |
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448 WriteSaveBuffer( (TUint16)0xffdb ); |
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449 WriteSaveBuffer( (TUint16)l ); |
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450 |
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451 TInt nqt = l / 65; |
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452 TInt i; |
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453 |
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454 // one or more quantization table |
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455 for( i=0; i<nqt; i++ ) |
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456 { |
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457 TUint8 t = iBuffer[ iBufPos++ ]; |
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458 TInt n = t & 15; |
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459 WriteSaveBuffer( t ); |
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460 |
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461 // not used: |
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462 // TInt precision = n >> 4; |
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463 |
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464 if (iQt[n]) |
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465 { |
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466 delete iQt[ n ]; |
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467 iQt[ n ] = NULL; |
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468 } |
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469 |
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470 iQt[ n ] = new( ELeave )TUint8[ 64 ]; |
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471 TInt j; |
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472 for( j=0; j<64; j++ ) |
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473 { |
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474 iQt[ n ][ j ] = iBuffer[ iBufPos++ ]; |
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475 } |
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476 |
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477 |
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478 TUint8 qt[ 64 ]; |
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479 ConvertQuants( iQt[ n ], qt ); |
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480 WriteSaveBuffer( qt, 64 ); |
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481 } |
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482 |
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483 |
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484 break; |
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485 } |
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486 case 0xc0: // start of frame ( SOF ) |
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487 { |
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488 TInt length = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
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489 |
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490 WriteSaveBuffer( (TUint16)0xffc0 ); |
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491 WriteSaveBuffer( (TUint16)length ); |
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492 |
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493 // not used: |
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494 TUint8 precision = iBuffer[ iBufPos ]; |
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495 WriteSaveBuffer( precision ); |
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496 iBufPos++; |
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497 |
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498 // height |
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499 TUint16 h = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
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500 iData.iSize.iHeight = h; |
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501 |
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502 // width |
|
503 TUint16 w = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
|
504 iData.iSize.iWidth = w; |
|
505 |
|
506 if( iRotate ) |
|
507 { |
|
508 WriteSaveBuffer( w ); |
|
509 WriteSaveBuffer( h ); |
|
510 } |
|
511 else |
|
512 { |
|
513 WriteSaveBuffer( h ); |
|
514 WriteSaveBuffer( w ); |
|
515 } |
|
516 |
|
517 // component data |
|
518 iNumComponents = iBuffer[ iBufPos++ ]; |
|
519 WriteSaveBuffer( (TUint8)iNumComponents ); |
|
520 |
|
521 TInt i; |
|
522 for( i=0; i<iNumComponents; i++ ) |
|
523 { |
|
524 TUint8 comp = iBuffer[ iBufPos++ ] - 1; |
|
525 TUint8 samplingFactor = iBuffer[ iBufPos++ ]; |
|
526 TUint8 quantizationTable = iBuffer[ iBufPos++ ]; |
|
527 iComponent[ comp ].iXFactor = samplingFactor >> 4; |
|
528 iComponent[ comp ].iYFactor = samplingFactor & 15; |
|
529 iComponent[ comp ].iQuantTable = quantizationTable; |
|
530 |
|
531 |
|
532 comp++; |
|
533 |
|
534 |
|
535 if( iRotate ) |
|
536 { |
|
537 samplingFactor = samplingFactor/16 + ( samplingFactor & 15 )*16; |
|
538 } |
|
539 |
|
540 WriteSaveBuffer( comp ); |
|
541 WriteSaveBuffer( samplingFactor ); |
|
542 WriteSaveBuffer( quantizationTable ); |
|
543 } |
|
544 |
|
545 TInt xBlocks = 0; |
|
546 TInt yBlocks = 0; |
|
547 |
|
548 for( i=0; i<iNumComponents; i++ ) |
|
549 { |
|
550 TInt x = iComponent[ i ].iXFactor; |
|
551 TInt y = iComponent[ i ].iYFactor; |
|
552 if( x > xBlocks ) |
|
553 { |
|
554 xBlocks = x; |
|
555 } |
|
556 if( y > yBlocks ) |
|
557 { |
|
558 yBlocks = y; |
|
559 } |
|
560 } |
|
561 |
|
562 iData.iBlockSize.iWidth = xBlocks * 8; |
|
563 iData.iBlockSize.iHeight = yBlocks * 8; |
|
564 |
|
565 TSize size = iData.iSize; |
|
566 size.iWidth /= iData.iBlockSize.iWidth; |
|
567 size.iHeight /= iData.iBlockSize.iHeight; |
|
568 |
|
569 if( iData.iSize.iWidth & ( iData.iBlockSize.iWidth - 1 ) ) |
|
570 { |
|
571 size.iWidth++; |
|
572 } |
|
573 |
|
574 if( iData.iSize.iHeight & ( iData.iBlockSize.iHeight - 1 ) ) |
|
575 { |
|
576 size.iHeight++; |
|
577 } |
|
578 |
|
579 iData.iSizeInBlocks = size; |
|
580 |
|
581 |
|
582 break; |
|
583 } |
|
584 case 0xc1: |
|
585 { |
|
586 // Extended sequential Jpeg, not supported |
|
587 User::Leave( KErrNotSupported ); |
|
588 break; |
|
589 }; |
|
590 case 0xc2: |
|
591 { |
|
592 // Progressive DCT jpeg, not supported |
|
593 User::Leave( KErrNotSupported ); |
|
594 break; |
|
595 }; |
|
596 case 0xc3: |
|
597 { |
|
598 // Lossless ( sequential ) Jpeg, not supported |
|
599 User::Leave( KErrNotSupported ); |
|
600 break; |
|
601 }; |
|
602 |
|
603 case 0xc5: |
|
604 case 0xc6: |
|
605 case 0xc7: |
|
606 case 0xc8: |
|
607 case 0xc9: |
|
608 case 0xca: |
|
609 case 0xcb: |
|
610 case 0xcc: |
|
611 case 0xcd: |
|
612 case 0xce: |
|
613 case 0xcf: |
|
614 { |
|
615 User::Leave( KErrNotSupported ); |
|
616 break; |
|
617 }; |
|
618 case 0xc4: // huffman table |
|
619 { |
|
620 TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
|
621 |
|
622 |
|
623 // |
|
624 // Write default huffman tables |
|
625 // |
|
626 WriteSaveBuffer( (TUint16)0xffc4 ); |
|
627 TUint16 saveLen = 2+1+16+12+1+16+12+1+16+162+1+16+162; |
|
628 WriteSaveBuffer( saveLen ); |
|
629 |
|
630 WriteSaveBuffer( (TUint8)0 ); |
|
631 WriteSaveBuffer( bits_dc_luminance+1, 16 ); |
|
632 WriteSaveBuffer( val_dc_luminance, 12 ); |
|
633 |
|
634 WriteSaveBuffer( (TUint8)1 ); |
|
635 WriteSaveBuffer( bits_dc_chrominance+1, 16 ); |
|
636 WriteSaveBuffer( val_dc_chrominance, 12 ); |
|
637 |
|
638 WriteSaveBuffer( (TUint8)16 ); |
|
639 WriteSaveBuffer( bits_ac_luminance+1, 16 ); |
|
640 WriteSaveBuffer( val_ac_luminance, 20*8+2 ); |
|
641 |
|
642 WriteSaveBuffer( (TUint8)17 ); |
|
643 WriteSaveBuffer( bits_ac_chrominance+1, 16 ); |
|
644 WriteSaveBuffer( val_ac_chrominance, 20*8+2 ); |
|
645 |
|
646 TInt table = 0; |
|
647 |
|
648 TInt n = 0; |
|
649 |
|
650 // one or more huffman tables |
|
651 while( n<l-2 ) |
|
652 { |
|
653 THuffman* huff = new( ELeave )THuffman; |
|
654 |
|
655 table = iBuffer[ iBufPos++ ]; |
|
656 n++; |
|
657 TUint8 huffSize[ 16 ]; |
|
658 TInt numSymbols = 0; |
|
659 TInt i; |
|
660 |
|
661 for( i=0; i<16; i++ ) |
|
662 { |
|
663 TInt size = iBuffer[ iBufPos++ ]; |
|
664 huffSize[ i ] = size; |
|
665 numSymbols += size; |
|
666 n++; |
|
667 } |
|
668 |
|
669 for( i=0; i<numSymbols; i++ ) |
|
670 { |
|
671 TUint8 v = iBuffer[ iBufPos++ ]; |
|
672 huff->iSymbol[ i ] = v; |
|
673 n++; |
|
674 } |
|
675 |
|
676 i = ( table & 16 ) / 8 + ( table & 15 ); |
|
677 |
|
678 |
|
679 // Generate huffman lookup tables ( huffSize, table ) |
|
680 |
|
681 |
|
682 TInt l; |
|
683 TInt p = 0; |
|
684 for( l=0; l<16; l++ ) |
|
685 { |
|
686 for( i=0; i<huffSize[ l ]; i++ ) |
|
687 { |
|
688 huff->iLength[ p++ ] = l+1; |
|
689 } |
|
690 } |
|
691 |
|
692 TInt code = 0; |
|
693 huff->iLength[ p ] = 0; |
|
694 TInt si = huff->iLength[ 0 ]; |
|
695 TInt lastP = p; |
|
696 |
|
697 TInt hc[ 256 ]; |
|
698 p = 0; |
|
699 |
|
700 while( huff->iLength[ p ] ) |
|
701 { |
|
702 while( huff->iLength[ p ] == si ) |
|
703 { |
|
704 hc[ p++ ] = code++; |
|
705 } |
|
706 code *= 2; |
|
707 si++; |
|
708 } |
|
709 |
|
710 l = 65536; |
|
711 for( i=lastP-1; i>=0; i-- ) |
|
712 { |
|
713 TInt t = 16 - huff->iLength[ i ]; |
|
714 TInt k = hc[ i ] * ( 1 << t ); |
|
715 TInt j; |
|
716 for( j=k; j<l; j++ ) |
|
717 { |
|
718 huff->iSearch[ j ] = i; |
|
719 } |
|
720 l = k; |
|
721 } |
|
722 |
|
723 i = ( table & 16 ) / 8 + ( table & 15 ); |
|
724 delete iHuffman[ i ]; |
|
725 iHuffman[ i ] = huff; |
|
726 } |
|
727 |
|
728 break; |
|
729 } |
|
730 // |
|
731 case 0xda: // start of scan ( SOS ) |
|
732 { |
|
733 // write restart interval before SOS |
|
734 /* |
|
735 WriteSaveBuffer( (TUint16)0xffdd ); |
|
736 WriteSaveBuffer( (TUint16)0x0004 ); |
|
737 WriteSaveBuffer( (TUint16)1 ); // reset every (1) macroblock |
|
738 */ |
|
739 // SOS now: |
|
740 WriteSaveBuffer( (TUint16)0xffda ); |
|
741 TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
|
742 |
|
743 WriteSaveBuffer( (TUint16)l ); |
|
744 |
|
745 TInt c1 = 0; |
|
746 TInt c2 = 0; |
|
747 TInt c3 = 0; |
|
748 |
|
749 TInt numComponents = iBuffer[ iBufPos++ ]; |
|
750 WriteSaveBuffer( (TUint8)3 ); |
|
751 TInt i; |
|
752 for( i=0; i<numComponents; i++ ) |
|
753 { |
|
754 TInt componentId = iBuffer[ iBufPos++ ]; |
|
755 TInt componentHt = iBuffer[ iBufPos++ ]; |
|
756 } |
|
757 WriteSaveBuffer( (TUint8)1 ); // component 1 |
|
758 WriteSaveBuffer( (TUint8)0 ); |
|
759 |
|
760 WriteSaveBuffer( (TUint8)2 ); // component 2 |
|
761 WriteSaveBuffer( (TUint8)17 ); |
|
762 |
|
763 WriteSaveBuffer( (TUint8)3 ); // component 3 |
|
764 WriteSaveBuffer( (TUint8)17 ); |
|
765 |
|
766 WriteSaveBuffer( (TUint8)0 ); |
|
767 WriteSaveBuffer( (TUint8)63 ); // dctsize - 1 |
|
768 WriteSaveBuffer( (TUint8)0 ); |
|
769 |
|
770 iBufPos += 3; |
|
771 |
|
772 // |
|
773 // Create default huffman tables for save |
|
774 // |
|
775 TSHuffman* huff = new( ELeave )TSHuffman; |
|
776 CreateSaveHuffmanL( huff, bits_dc_luminance, val_dc_luminance ); |
|
777 iSaveHuffman[ 0 ] = huff; |
|
778 |
|
779 huff = new( ELeave )TSHuffman; |
|
780 CreateSaveHuffmanL( huff, bits_dc_chrominance, val_dc_chrominance ); |
|
781 iSaveHuffman[ 1 ] = huff; |
|
782 |
|
783 huff = new( ELeave )TSHuffman; |
|
784 CreateSaveHuffmanL( huff, bits_ac_luminance, val_ac_luminance ); |
|
785 iSaveHuffman[ 2 ] = huff; |
|
786 |
|
787 huff = new( ELeave )TSHuffman; |
|
788 CreateSaveHuffmanL( huff, bits_ac_chrominance, val_ac_chrominance ); |
|
789 iSaveHuffman[ 3 ] = huff; |
|
790 |
|
791 |
|
792 |
|
793 // decode |
|
794 |
|
795 TInt bw = iData.iSizeInBlocks.iWidth; |
|
796 TInt bh = iData.iSizeInBlocks.iHeight; |
|
797 |
|
798 TInt bx; |
|
799 TInt by; |
|
800 |
|
801 for( by=0; by<bh; by++ ) |
|
802 { |
|
803 for( bx=0; bx<bw; bx++ ) |
|
804 { |
|
805 if( iRst ) |
|
806 { |
|
807 // reset marker zeroes DC-values |
|
808 c1 = 0; |
|
809 c2 = 0; |
|
810 c3 = 0; |
|
811 iRst = EFalse; |
|
812 } |
|
813 |
|
814 TInt i; |
|
815 |
|
816 // go fast trough all huffman data |
|
817 iCurrentHuffman = 0; |
|
818 iCurrentQt = iQt[ 0 ]; |
|
819 |
|
820 // Y-component |
|
821 TInt n = iComponent[ 0 ].iXFactor * iComponent[ 0 ].iYFactor; |
|
822 iDct[ 0 ] = c1; |
|
823 for( i=0; i<n; i++ ) |
|
824 { |
|
825 DecodeBlock2L(); |
|
826 } |
|
827 c1 = iDct[ 0 ]; |
|
828 |
|
829 iCurrentHuffman = 1; |
|
830 |
|
831 iCurrentQt = iQt[ 1 ]; |
|
832 |
|
833 // U-component |
|
834 n = iComponent[ 1 ].iXFactor * iComponent[ 1 ].iYFactor; |
|
835 iDct[ 0 ] = c2; |
|
836 for( i=0; i<n; i++ ) |
|
837 { |
|
838 DecodeBlock2L(); |
|
839 } |
|
840 c2 = iDct[ 0 ]; |
|
841 |
|
842 iCurrentSaveHuffman = iSaveHuffman[ 1 ]; |
|
843 // V-component |
|
844 n = iComponent[ 1 ].iXFactor * iComponent[ 1 ].iYFactor; |
|
845 iDct[ 0 ] = c3; |
|
846 for( i=0; i<n; i++ ) |
|
847 { |
|
848 DecodeBlock2L(); |
|
849 } |
|
850 c3 = iDct[ 0 ]; |
|
851 |
|
852 // take care of RST0's leftover bits: |
|
853 if( iRst ) |
|
854 { |
|
855 TInt goodBits = ( iBufBits >> 3 ) << 3; |
|
856 TInt badBits = iBufBits - goodBits; |
|
857 iBuf <<= badBits; |
|
858 iBufBits = goodBits; |
|
859 } |
|
860 } |
|
861 } |
|
862 |
|
863 moreChunks = EFalse; |
|
864 |
|
865 SaveBlocks(); |
|
866 |
|
867 // flush last bits to save buffer |
|
868 if( iSaveBufBitPos ) |
|
869 { |
|
870 WriteBits( 0, 8-iSaveBufBitPos ); |
|
871 } |
|
872 |
|
873 // EOI |
|
874 |
|
875 |
|
876 |
|
877 //iSaveBuf[ iSaveBufPos++ ] = 0xff; |
|
878 //iSaveBuf[ iSaveBufPos++ ] = 0xd9; |
|
879 WriteSaveBuffer( (TUint16)0xffd9 ); |
|
880 |
|
881 FlushSaveBuf(); |
|
882 |
|
883 |
|
884 |
|
885 break; |
|
886 } |
|
887 case 0xd9: // end of image ( EOI ) |
|
888 { |
|
889 // not really used for anything |
|
890 // will exit if picture data is read. |
|
891 break; |
|
892 } |
|
893 case 0xdd: // define restart interval |
|
894 { |
|
895 //TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; |
|
896 iBufPos += 2; |
|
897 //TInt interval = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; |
|
898 iBufPos += 2; |
|
899 |
|
900 break; |
|
901 } |
|
902 case 0x00: // escaped 0xff |
|
903 { |
|
904 // only comes if file is broken somehow |
|
905 break; |
|
906 } |
|
907 case 0xfe: // jpeg comment |
|
908 { |
|
909 TInt l = 256 * iBuffer[ iBufPos ] + iBuffer[ iBufPos + 1 ]; iBufPos += 2; |
|
910 WriteSaveBuffer( (TUint16)0xfffe ); |
|
911 WriteSaveBuffer( (TUint16)l ); |
|
912 WriteSaveBuffer( iBuffer + iBufPos, l-2 ); |
|
913 iBufPos += l-2; |
|
914 break; |
|
915 }; |
|
916 default: |
|
917 { |
|
918 // unknown block |
|
919 break; |
|
920 } |
|
921 } |
|
922 } |
|
923 else if( b == 255 ) |
|
924 { |
|
925 possibleChunk = ETrue; |
|
926 } |
|
927 |
|
928 } |
|
929 |
|
930 } |
|
931 |
|
932 |
|
933 |
|
934 |
|
935 void CJpRotate::BufFwd( TInt aBits ) |
|
936 { |
|
937 iBuf <<= aBits; |
|
938 iBufBits -= aBits; |
|
939 } |
|
940 |
|
941 |
|
942 |
|
943 TInt CJpRotate::BufBits( TInt aBits ) |
|
944 { |
|
945 if( aBits == 0 ) return 0; |
|
946 while( iBufBits < aBits ) |
|
947 { |
|
948 BufLoad8(); |
|
949 } |
|
950 TInt val = iBuf >> ( 32-aBits ); |
|
951 BufFwd( aBits ); |
|
952 return val; |
|
953 } |
|
954 |
|
955 |
|
956 |
|
957 TInt CJpRotate::Buf16() |
|
958 { |
|
959 while( iBufBits < 16 ) |
|
960 { |
|
961 BufLoad8(); |
|
962 } |
|
963 TInt val = iBuf >> ( 32-16 ); |
|
964 return val; |
|
965 } |
|
966 |
|
967 |
|
968 |
|
969 void CJpRotate::BufLoad8() |
|
970 { |
|
971 TInt v; |
|
972 v = iBuffer[ iBufPos++ ]; |
|
973 if( v == 255 ) |
|
974 { |
|
975 v = iBuffer[ iBufPos++ ]; // escaped 0xff ? |
|
976 if( v == 0 ) |
|
977 { |
|
978 v = 255; |
|
979 } |
|
980 else if( v == 0xd9 ) // EOI |
|
981 { |
|
982 iEOF = true; |
|
983 v = 0; |
|
984 } |
|
985 else |
|
986 { |
|
987 // here we have probably discarded a RST0 or similar |
|
988 v = iBuffer[ iBufPos++ ]; |
|
989 iRst = ETrue; |
|
990 } |
|
991 } |
|
992 |
|
993 v <<= ( 24 - iBufBits ); |
|
994 iBuf |= v; |
|
995 iBufBits += 8; |
|
996 } |
|
997 |
|
998 |
|
999 |
|
1000 void CJpRotate::DecodeBlockL( TInt aDc ) |
|
1001 { |
|
1002 |
|
1003 // |
|
1004 // Dummy version of block decode |
|
1005 // only traverses through huffman data |
|
1006 // and collects DC-values |
|
1007 // |
|
1008 TInt16 vals[ 64 ]; |
|
1009 TUint16 bits[ 64 ]; |
|
1010 TUint8 lens[ 64 ]; |
|
1011 |
|
1012 Mem::FillZ( vals, 64*2 ); |
|
1013 Mem::FillZ( bits, 64*2 ); |
|
1014 Mem::FillZ( lens, 64 ); |
|
1015 |
|
1016 //for( TInt i=0; i<64; i++ ) lens[ i ] = 255; |
|
1017 |
|
1018 |
|
1019 THuffman* h = iHuffman[ iCurrentHuffman ]; |
|
1020 |
|
1021 |
|
1022 TInt k; |
|
1023 for( k=0; k<64; k++ ) |
|
1024 { |
|
1025 |
|
1026 TInt v = Buf16(); |
|
1027 TInt index = h->iSearch[ v ]; |
|
1028 TInt symbol = h->iSymbol[ index ]; |
|
1029 BufFwd( h->iLength[ index ] ); |
|
1030 |
|
1031 TInt nullCount = 0; |
|
1032 |
|
1033 if( k>0 ) |
|
1034 { |
|
1035 nullCount = symbol >> 4; |
|
1036 symbol &= 15; |
|
1037 } |
|
1038 |
|
1039 |
|
1040 v = BufBits( symbol ); |
|
1041 |
|
1042 TUint16 currentBits = v; |
|
1043 |
|
1044 if( v < ( 1 << ( symbol-1 ) ) ) |
|
1045 { |
|
1046 v += 1 - ( 1 << symbol ); |
|
1047 } |
|
1048 |
|
1049 |
|
1050 if( k ) |
|
1051 { |
|
1052 if( nullCount==0 && v==0 ) |
|
1053 { |
|
1054 k = 64; |
|
1055 break; |
|
1056 } |
|
1057 else if( nullCount==15 && v==0 ) |
|
1058 { |
|
1059 k += 15; |
|
1060 } |
|
1061 else |
|
1062 { |
|
1063 k += nullCount; |
|
1064 if( k > 63 ) break; |
|
1065 TInt pos = k; |
|
1066 if( iRotate ) pos = KReZig[ pos ]; |
|
1067 lens[ pos ] = symbol; |
|
1068 vals[ pos ] = v; |
|
1069 bits[ pos ] = currentBits; |
|
1070 } |
|
1071 } |
|
1072 else |
|
1073 { |
|
1074 h = iHuffman[ iCurrentHuffman+2 ]; // DC -> AC huffman |
|
1075 |
|
1076 lens[ 0 ] = symbol; |
|
1077 vals[ 0 ] = aDc / iCurrentQt[ 0 ]; |
|
1078 //vals[ 0 ] = aDc; |
|
1079 bits[ 0 ] = currentBits; |
|
1080 } |
|
1081 } |
|
1082 |
|
1083 |
|
1084 |
|
1085 TInt count; |
|
1086 for( count=63; count>=0; count-- ) |
|
1087 { |
|
1088 if( lens[ count ] != 0 ) break; |
|
1089 } |
|
1090 if( count < 0 ) count = 0; |
|
1091 |
|
1092 TInt nullCount = 0; |
|
1093 |
|
1094 // |
|
1095 // Write DC |
|
1096 // |
|
1097 |
|
1098 TInt value = vals[ 0 ]; |
|
1099 bool minus = false; |
|
1100 if( value < 0 ) |
|
1101 { |
|
1102 minus = true; |
|
1103 value = -value; |
|
1104 } |
|
1105 TInt v = value; |
|
1106 TInt vl = 0; |
|
1107 |
|
1108 while( v ) |
|
1109 { |
|
1110 v >>= 1; |
|
1111 vl++; |
|
1112 } |
|
1113 |
|
1114 if( minus ) |
|
1115 { |
|
1116 TInt a = ( 1 << vl ) - 1; |
|
1117 value ^= a; |
|
1118 } |
|
1119 |
|
1120 WriteHuffmanL( vl ); |
|
1121 WriteBits( value, vl ); |
|
1122 |
|
1123 // DC -> AC huffman |
|
1124 if( iCurrentSaveHuffman == iSaveHuffman[ 0 ] ) |
|
1125 { |
|
1126 iCurrentSaveHuffman = iSaveHuffman[ 2 ]; |
|
1127 } |
|
1128 else if( iCurrentSaveHuffman == iSaveHuffman[ 1 ] ) |
|
1129 { |
|
1130 iCurrentSaveHuffman = iSaveHuffman[ 3 ]; |
|
1131 } |
|
1132 // |
|
1133 // Write AC |
|
1134 // |
|
1135 for( k=1; k<=count; k++ ) |
|
1136 { |
|
1137 |
|
1138 if( vals[ k ] == 0 ) |
|
1139 { |
|
1140 nullCount++; |
|
1141 if( nullCount == 16 ) |
|
1142 { |
|
1143 // write nullCount 15 with value 0 |
|
1144 WriteHuffmanL( 15 * 16 ); |
|
1145 nullCount = 0; |
|
1146 } |
|
1147 } |
|
1148 else |
|
1149 { |
|
1150 // write bits & nullCount huffman coded |
|
1151 |
|
1152 TUint8 neg = 0; |
|
1153 TInt p = KZigZag[ k ]; |
|
1154 if( p & 8 && iMirror ) neg = 1; |
|
1155 if( p & 1 && iFlip ) neg ^= 1; |
|
1156 |
|
1157 TUint16 b = bits[ k ]; |
|
1158 TInt l = lens[ k ]; |
|
1159 TInt v = vals[ k ]; |
|
1160 if( neg ) |
|
1161 { |
|
1162 if( v>0 ) |
|
1163 { |
|
1164 b = v ^ ( ( 1 << l ) - 1 ); |
|
1165 } |
|
1166 else |
|
1167 { |
|
1168 b = -v; |
|
1169 } |
|
1170 |
|
1171 } |
|
1172 |
|
1173 WriteHuffmanL( l + nullCount * 16 ); |
|
1174 WriteBits( b,l ); |
|
1175 |
|
1176 nullCount = 0; |
|
1177 } |
|
1178 } |
|
1179 if( count != 63 ) |
|
1180 { |
|
1181 WriteHuffmanL( 0 ); |
|
1182 } |
|
1183 |
|
1184 } |
|
1185 |
|
1186 |
|
1187 |
|
1188 void CJpRotate::DecodeBlock2L() |
|
1189 { |
|
1190 |
|
1191 THuffman* h = iHuffman[ iCurrentHuffman ]; |
|
1192 |
|
1193 TInt k; |
|
1194 |
|
1195 TJpegBasicBlock bl; |
|
1196 bl.iOffset = iBufPos; |
|
1197 bl.iBuf = iBuf; |
|
1198 bl.iBufBits = iBufBits; |
|
1199 |
|
1200 |
|
1201 for( k=0; k<64; k++ ) |
|
1202 { |
|
1203 |
|
1204 TInt v = Buf16(); |
|
1205 TInt index = h->iSearch[ v ]; |
|
1206 TInt symbol = h->iSymbol[ index ]; |
|
1207 BufFwd( h->iLength[ index ] ); |
|
1208 |
|
1209 TInt nullCount = 0; |
|
1210 if( k>0 ) |
|
1211 { |
|
1212 nullCount = symbol >> 4; |
|
1213 symbol &= 15; |
|
1214 } |
|
1215 |
|
1216 v = BufBits( symbol ); |
|
1217 |
|
1218 if( v < ( 1 << ( symbol-1 ) ) ) |
|
1219 { |
|
1220 v += 1 - ( 1 << symbol ); |
|
1221 } |
|
1222 |
|
1223 if( k ) |
|
1224 { |
|
1225 if( nullCount==0 && v==0 ) |
|
1226 { |
|
1227 k = 64; |
|
1228 break; |
|
1229 } |
|
1230 else if( nullCount==15 && v==0 ) |
|
1231 { |
|
1232 k += 15; |
|
1233 } |
|
1234 else |
|
1235 { |
|
1236 k += nullCount; |
|
1237 } |
|
1238 } |
|
1239 else |
|
1240 { |
|
1241 iDct[ 0 ] += v * iCurrentQt[ 0 ]; |
|
1242 h = iHuffman[ iCurrentHuffman+2 ]; |
|
1243 } |
|
1244 |
|
1245 } |
|
1246 |
|
1247 bl.iDc = iDct[ 0 ]; |
|
1248 |
|
1249 User::LeaveIfError(iBasicBlock.Append( bl )); |
|
1250 |
|
1251 //Idct(); |
|
1252 } |
|
1253 |
|
1254 |
|
1255 |
|
1256 |
|
1257 const TJpegData& CJpRotate::Info() |
|
1258 { |
|
1259 return iData; |
|
1260 } |
|
1261 |
|
1262 |
|
1263 TPtrC8 CJpRotate::ExifData() |
|
1264 { |
|
1265 return TPtrC8( iExifData, iExifDataLength ); |
|
1266 } |
|
1267 |
|
1268 |
|
1269 |
|
1270 |
|
1271 void CJpRotate::WriteHuffmanL( TInt aValue ) |
|
1272 { |
|
1273 TInt code = iCurrentSaveHuffman->iCode[ aValue ]; |
|
1274 TInt len = iCurrentSaveHuffman->iLength[ aValue ]; |
|
1275 if( aValue != 0 && len == 0 ) |
|
1276 { |
|
1277 // |
|
1278 // The value which we tried to write doesn't exist in |
|
1279 // the huffman table. Therefore the output would be |
|
1280 // corrupted. Thus the leave. |
|
1281 // actually this should not happen ever. |
|
1282 // |
|
1283 User::Leave( KErrCorrupt ); |
|
1284 } |
|
1285 WriteBits( code, len ); |
|
1286 } |
|
1287 |
|
1288 |
|
1289 |
|
1290 void CJpRotate::WriteBits( TUint32 aValue, TInt aNumBits ) |
|
1291 { |
|
1292 |
|
1293 aValue &= ( ( 1 << aNumBits ) - 1 ); |
|
1294 while( aNumBits > 0 ) |
|
1295 { |
|
1296 TInt bitroom = 8 - iSaveBufBitPos; |
|
1297 //iSaveBuf[ iSaveBufPos ] |= ( ( aValue << ( 24+bitroom-aNumBits ) ) >> 24 ); |
|
1298 iSaveByte |= ( ( aValue << ( 24+bitroom-aNumBits ) ) >> 24 ); |
|
1299 |
|
1300 if( aNumBits < bitroom ) |
|
1301 { |
|
1302 iSaveBufBitPos += aNumBits; |
|
1303 } |
|
1304 else |
|
1305 { |
|
1306 iSaveBufBitPos += bitroom; |
|
1307 } |
|
1308 |
|
1309 if( iSaveBufBitPos == 8 ) |
|
1310 { |
|
1311 |
|
1312 iSaveBufBitPos = 0; |
|
1313 iSaveBuf[ iSaveBufPos ] = iSaveByte; |
|
1314 |
|
1315 if( iSaveByte == 255 ) |
|
1316 { |
|
1317 iSaveBufPos++; |
|
1318 if( iSaveBufPos == iSaveBufSize ) |
|
1319 { |
|
1320 FlushSaveBuf(); |
|
1321 } |
|
1322 iSaveBuf[ iSaveBufPos ] = 0; // 255,0 = 255 ( escaped 255 ) |
|
1323 } |
|
1324 iSaveByte = 0; |
|
1325 iSaveBufPos++; |
|
1326 |
|
1327 if( iSaveBufPos == iSaveBufSize ) |
|
1328 { |
|
1329 FlushSaveBuf(); |
|
1330 } |
|
1331 |
|
1332 } |
|
1333 aNumBits -= bitroom; |
|
1334 } |
|
1335 } |
|
1336 |
|
1337 |
|
1338 void CJpRotate::CreateSaveHuffmanL( TSHuffman* aHuffman, const TUint8* aBits, const TUint8* aVal ) |
|
1339 { |
|
1340 |
|
1341 |
|
1342 TInt huffSize[ 16 ]; |
|
1343 |
|
1344 TUint32 huffCode[ 256 ]; |
|
1345 TInt huffValue[ 256 ]; |
|
1346 TInt huffLength[ 256 ]; |
|
1347 |
|
1348 TInt numSymbols = 0; |
|
1349 TInt i; |
|
1350 |
|
1351 for( i=0; i<16; i++ ) |
|
1352 { |
|
1353 TInt size = aBits[ i+1 ]; |
|
1354 huffSize[ i ] = size; |
|
1355 numSymbols += size; |
|
1356 } |
|
1357 |
|
1358 for( i=0; i<numSymbols; i++ ) |
|
1359 { |
|
1360 huffValue[ i ] = aVal[ i ]; |
|
1361 } |
|
1362 |
|
1363 TInt l; |
|
1364 TInt p = 0; |
|
1365 for( i=0; i<256; i++ ) huffLength[ i ] = -1; |
|
1366 for( l=0; l<16; l++ ) |
|
1367 { |
|
1368 for( i=0; i<huffSize[ l ]; i++ ) |
|
1369 { |
|
1370 huffLength[ p++ ] = l+1; |
|
1371 } |
|
1372 } |
|
1373 |
|
1374 TInt code = 0; |
|
1375 huffLength[ p ] = 0; |
|
1376 TInt si = huffLength[ 0 ]; |
|
1377 |
|
1378 p = 0; |
|
1379 |
|
1380 while( huffLength[ p ] ) |
|
1381 { |
|
1382 while( huffLength[ p ] == si ) |
|
1383 { |
|
1384 huffCode[ p++ ] = code++; |
|
1385 } |
|
1386 code *= 2; |
|
1387 si++; |
|
1388 } |
|
1389 |
|
1390 for( i=0; i<numSymbols; i++ ) |
|
1391 { |
|
1392 TInt v = huffValue[ i ]; |
|
1393 aHuffman->iLength[ v ] = huffLength[ i ]; |
|
1394 aHuffman->iCode[ v ] = huffCode[ i ]; |
|
1395 } |
|
1396 |
|
1397 |
|
1398 } |
|
1399 |
|
1400 |
|
1401 void CJpRotate::ConvertQuants( TUint8* aSrc, TUint8* aTgt ) |
|
1402 { |
|
1403 if( ! iRotate ) |
|
1404 { |
|
1405 Mem::Copy( aTgt, aSrc, 64 ); |
|
1406 return; |
|
1407 } |
|
1408 |
|
1409 for( TInt i=0; i<64; i++ ) |
|
1410 { |
|
1411 aTgt[ KReZig[ i ] ] = aSrc[ i ]; |
|
1412 } |
|
1413 } |
|
1414 |
|
1415 |
|
1416 |
|
1417 void CJpRotate::WriteSaveBuffer( const TUint8* aSrc, TInt aBytes ) |
|
1418 { |
|
1419 TInt pos = 0; |
|
1420 while( aBytes ) |
|
1421 { |
|
1422 TInt bytes = aBytes; |
|
1423 if( iSaveBufPos + bytes > iSaveBufSize ) |
|
1424 { |
|
1425 bytes = iSaveBufSize - iSaveBufPos; |
|
1426 } |
|
1427 Mem::Copy( iSaveBuf + iSaveBufPos, aSrc + pos, bytes ); |
|
1428 iSaveBufPos += bytes; |
|
1429 if( iSaveBufPos == iSaveBufSize ) |
|
1430 { |
|
1431 FlushSaveBuf(); |
|
1432 } |
|
1433 aBytes -= bytes; |
|
1434 pos += bytes; |
|
1435 } |
|
1436 } |
|
1437 |
|
1438 |
|
1439 void CJpRotate::WriteSaveBuffer( TUint8 aValue ) |
|
1440 { |
|
1441 iSaveBuf[ iSaveBufPos++ ] = aValue; |
|
1442 if( iSaveBufPos == iSaveBufSize ) |
|
1443 { |
|
1444 FlushSaveBuf(); |
|
1445 } |
|
1446 } |
|
1447 |
|
1448 |
|
1449 void CJpRotate::WriteSaveBuffer( TUint16 aValue ) |
|
1450 { |
|
1451 WriteSaveBuffer( (TUint8) ( aValue / 256 ) ); |
|
1452 WriteSaveBuffer( (TUint8) ( aValue & 255 ) ); |
|
1453 } |
|
1454 |
|
1455 |
|
1456 void CJpRotate::SaveBlocks() |
|
1457 { |
|
1458 TInt yBlocks = iComponent[ 0 ].iXFactor * iComponent[ 0 ].iYFactor; |
|
1459 TInt uBlocks = iComponent[ 1 ].iXFactor * iComponent[ 1 ].iYFactor; |
|
1460 TInt vBlocks = iComponent[ 2 ].iXFactor * iComponent[ 2 ].iYFactor; |
|
1461 |
|
1462 TInt blocks = yBlocks + uBlocks + vBlocks; |
|
1463 TInt blockOffset[ 16 ]; |
|
1464 |
|
1465 TInt x; |
|
1466 TInt y; |
|
1467 |
|
1468 TInt i = 0; |
|
1469 TInt b = 0; |
|
1470 for( TInt comp = 0; comp<iNumComponents; comp++ ) |
|
1471 { |
|
1472 TComponent& c = iComponent[ comp ]; |
|
1473 |
|
1474 for( y=0; y<c.iYFactor; y++ ) |
|
1475 { |
|
1476 for( x=0; x<c.iXFactor; x++ ) |
|
1477 { |
|
1478 TInt xx = x; |
|
1479 TInt yy = y; |
|
1480 TInt fx = c.iXFactor; |
|
1481 TInt fy = c.iYFactor; |
|
1482 |
|
1483 |
|
1484 if( iRotate ) |
|
1485 { |
|
1486 TInt t = xx; xx = yy; yy = t; |
|
1487 if( iFlip ) yy = fx - 1 - yy; |
|
1488 if( iMirror ) xx = fy - 1 - xx; |
|
1489 t = fx; fx=fy; fy = t; |
|
1490 } |
|
1491 else |
|
1492 { |
|
1493 if( iFlip ) yy = fy - 1 - yy; |
|
1494 if( iMirror ) xx = fx - 1 - xx; |
|
1495 } |
|
1496 |
|
1497 TInt v = xx + yy * fx; //1302 |
|
1498 //while( v >= n ) v -= n; |
|
1499 //blockOffset[ i++ ] = b + v; |
|
1500 blockOffset[ b+v ] = i++; |
|
1501 } |
|
1502 } |
|
1503 b += c.iXFactor*c.iYFactor; |
|
1504 } |
|
1505 TInt bw = iData.iSizeInBlocks.iWidth; |
|
1506 TInt bh = iData.iSizeInBlocks.iHeight; |
|
1507 |
|
1508 TInt yDc = 0; |
|
1509 TInt uDc = 0; |
|
1510 TInt vDc = 0; |
|
1511 |
|
1512 TInt count = 0; |
|
1513 |
|
1514 TInt blockXAdd; |
|
1515 TInt blockYAdd; |
|
1516 TInt blockPos; |
|
1517 |
|
1518 if( iRotate ) |
|
1519 { |
|
1520 if( iMirror ) |
|
1521 { |
|
1522 if( iFlip ) |
|
1523 { |
|
1524 blockPos = blocks * ( bw * bh - 1 ); |
|
1525 blockXAdd = -blocks * bw; |
|
1526 blockYAdd = blocks * bw * bh - blocks; |
|
1527 } |
|
1528 else |
|
1529 { |
|
1530 blockPos = blocks * bw * ( bh - 1 ); |
|
1531 blockXAdd = -blocks * bw; |
|
1532 blockYAdd = blocks * bw * bh + blocks; |
|
1533 } |
|
1534 } |
|
1535 else |
|
1536 { |
|
1537 if( iFlip ) |
|
1538 { |
|
1539 blockPos = blocks * ( bw - 1 ); |
|
1540 blockXAdd = blocks * bw; |
|
1541 blockYAdd = -blocks * bw * bh - blocks; |
|
1542 } |
|
1543 else |
|
1544 { |
|
1545 blockPos = 0; |
|
1546 blockXAdd = blocks * bw; |
|
1547 blockYAdd = -blocks * ( bw * bh - 1 ); |
|
1548 } |
|
1549 } |
|
1550 TInt t = bw; bw = bh; bh = t; |
|
1551 } |
|
1552 else |
|
1553 { |
|
1554 if( iMirror ) |
|
1555 { |
|
1556 if( iFlip ) |
|
1557 { |
|
1558 blockPos = blocks * ( bw * bh - 1 ); |
|
1559 blockXAdd = -blocks; |
|
1560 blockYAdd = 0; |
|
1561 } |
|
1562 else |
|
1563 { |
|
1564 blockPos = blocks * ( bw-1 ); |
|
1565 blockXAdd = -blocks; |
|
1566 blockYAdd = bw * blocks * 2; |
|
1567 } |
|
1568 } |
|
1569 else |
|
1570 { |
|
1571 if( iFlip ) |
|
1572 { |
|
1573 blockPos = blocks * bw * ( bh-1 ); |
|
1574 blockXAdd = blocks; |
|
1575 blockYAdd = -blocks*bw*2; |
|
1576 } |
|
1577 else |
|
1578 { |
|
1579 blockPos = 0; |
|
1580 blockXAdd = blocks; |
|
1581 blockYAdd = 0; |
|
1582 } |
|
1583 } |
|
1584 } |
|
1585 |
|
1586 TInt numMacroBlocks = bw*bh; |
|
1587 |
|
1588 for( y=0; y<bh; y++ ) |
|
1589 { |
|
1590 for( x=0; x<bw; x++ ) |
|
1591 { |
|
1592 |
|
1593 iCurrentQt = iQt[ 0 ]; |
|
1594 TInt i = 0; |
|
1595 TInt n; |
|
1596 for( n=0; n<yBlocks; n++ ) |
|
1597 { |
|
1598 TInt bo = blockOffset[ i++ ]; |
|
1599 TJpegBasicBlock& bl = iBasicBlock[ blockPos + bo ]; |
|
1600 iBuf = bl.iBuf; |
|
1601 iBufPos = bl.iOffset; |
|
1602 iBufBits = bl.iBufBits; |
|
1603 |
|
1604 iCurrentHuffman = 0; |
|
1605 iCurrentSaveHuffman = iSaveHuffman[ 0 ]; |
|
1606 DecodeBlockL( bl.iDc - yDc ); |
|
1607 yDc = bl.iDc; |
|
1608 } |
|
1609 |
|
1610 iCurrentQt = iQt[ 1 ]; |
|
1611 |
|
1612 for( n=0; n<uBlocks; n++ ) |
|
1613 { |
|
1614 TJpegBasicBlock& bl = iBasicBlock[ blockPos + blockOffset[ i++ ] ]; |
|
1615 iBuf = bl.iBuf; |
|
1616 iBufPos = bl.iOffset; |
|
1617 iBufBits = bl.iBufBits; |
|
1618 |
|
1619 iCurrentHuffman = 1; |
|
1620 iCurrentSaveHuffman = iSaveHuffman[ 1 ]; |
|
1621 DecodeBlockL( bl.iDc - uDc ); |
|
1622 uDc = bl.iDc; |
|
1623 } |
|
1624 |
|
1625 for( n=0; n<vBlocks; n++ ) |
|
1626 { |
|
1627 TJpegBasicBlock& bl = iBasicBlock[ blockPos + blockOffset[ i++ ] ]; |
|
1628 iBuf = bl.iBuf; |
|
1629 iBufPos = bl.iOffset; |
|
1630 iBufBits = bl.iBufBits; |
|
1631 |
|
1632 iCurrentHuffman = 1; |
|
1633 iCurrentSaveHuffman = iSaveHuffman[ 1 ]; |
|
1634 DecodeBlockL( bl.iDc - vDc ); |
|
1635 vDc = bl.iDc; |
|
1636 } |
|
1637 |
|
1638 |
|
1639 // |
|
1640 // Rst ( 0xFFD0..0xFFD7 ) after each macroblock |
|
1641 // |
|
1642 /* |
|
1643 if( iSaveBufBitPos ) |
|
1644 { |
|
1645 WriteBits( 0,8-iSaveBufBitPos ); |
|
1646 } |
|
1647 WriteSaveBuffer( (TUint16)( 0xffd0 + (count & 7 ) ) ); |
|
1648 |
|
1649 yDc = 0; |
|
1650 uDc = 0; |
|
1651 vDc = 0; |
|
1652 |
|
1653 count++; |
|
1654 */ |
|
1655 |
|
1656 blockPos += blockXAdd; |
|
1657 |
|
1658 if( iCallBack ) |
|
1659 { |
|
1660 iCallBack->JpRotateStatus( count, numMacroBlocks ); |
|
1661 } |
|
1662 |
|
1663 } |
|
1664 blockPos += blockYAdd; |
|
1665 } |
|
1666 |
|
1667 //RDebug::Print( _L("last access block :%d"), mx ); |
|
1668 } |
|
1669 |
|
1670 |
|
1671 |
|
1672 void CJpRotate::FlushSaveBuf() |
|
1673 { |
|
1674 if( &iSaveFile == NULL ) return; // no flushing without file |
|
1675 TPtr8 ptr( iSaveBuf, iSaveBufPos ); |
|
1676 ptr.SetLength( iSaveBufPos ); |
|
1677 iSaveFile.Write( ptr ); |
|
1678 iSaveBufPos = 0; |
|
1679 } |