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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 #ifndef __CEXIFPARSER_H__ |
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21 #define __CEXIFPARSER_H__ |
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22 |
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23 #include <e32base.h> |
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24 |
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25 |
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26 |
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27 class TExifEntry |
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28 { |
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29 public: |
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30 inline TExifEntry() |
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31 { |
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32 iIfd = 0; |
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33 iTag = 0; |
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34 iType = 0; |
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35 iCount = 0; |
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36 iData = NULL; |
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37 } |
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38 |
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39 inline ~TExifEntry() |
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40 { |
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41 delete iData; |
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42 } |
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43 public: |
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44 TUint8 iIfd; |
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45 TUint16 iTag; |
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46 TUint8 iType; |
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47 TUint32 iCount; |
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48 TUint8* iData; |
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49 }; |
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50 |
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51 |
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52 class TParseStack |
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53 { |
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54 public: |
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55 inline TParseStack( TUint32 aPosition, TUint8 aIfd ) |
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56 : iPosition( aPosition ) |
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57 , iIfd( aIfd ) |
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58 { |
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59 } |
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60 public: |
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61 TUint32 iPosition; |
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62 TUint8 iIfd; |
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63 }; |
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64 |
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65 |
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66 |
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67 class CExifParser |
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68 : public CBase |
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69 { |
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70 public: |
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71 enum EIfd |
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72 { |
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73 EIfd0 = 0, |
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74 EIfd1, |
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75 ESubIfd, |
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76 EInteroperability |
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77 }; |
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78 |
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79 public: |
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80 static CExifParser* NewL(); |
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81 static CExifParser* NewLC(); |
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82 ~CExifParser(); |
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83 |
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84 private: |
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85 CExifParser(); |
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86 void ConstructL(); |
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87 |
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88 public: |
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89 void ParseL( const TPtrC8& aData ); |
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90 TBool TagExist( TInt aIfd, TUint16 aTag ); |
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91 void DeleteTag( TInt aIfd, TUint16 aTag ); |
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92 TUint32 TagValue( TInt aIfd, TUint16 aTag ); |
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93 |
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94 void AddTagL( TInt aIfd, TUint16 aTag, TInt32 aValue ); |
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95 void AddTagL( TInt aIfd, TUint16 aTag, TUint32 aValue ); |
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96 void AddTagL( TInt aIfd, TUint16 aTag, TUint16 aValue ); |
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97 void AddTagL( TInt aIfd, TUint16 aTag, TUint8 aValue ); |
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98 void AddTagL( TInt aIfd, TUint16 aTag, TPtrC8 aData ); |
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99 void AddTagL( TInt aIfd, TUint16 aTag, const TUint8* aValue ); |
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100 void AddTagL( TInt aIfd, TUint16 aTag, TUint32 aNominator, TUint32 aDenominator ); |
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101 |
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102 TPtrC8 ThumbData(); |
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103 TPtr8 SaveL( const TPtrC8& aThumbData ); |
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104 |
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105 |
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106 private: // new methods |
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107 TUint32 Get8(); |
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108 TUint32 Get16(); |
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109 TUint32 Get32(); |
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110 TUint32 Get8( const TUint8* aData ); |
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111 TUint32 Get16( const TUint8* aData ); |
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112 TUint32 Get32( const TUint8* aData ); |
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113 void ParseIfdL( TUint8 aIfd ); |
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114 TInt FindTag( TInt aIfd, TUint16 aTag ); |
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115 void StoreEntry( TInt aIndex ); |
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116 |
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117 void Put8( TUint8 aData ); |
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118 void Put16( TUint16 aData ); |
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119 void Put32( TUint32 aData ); |
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120 |
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121 TUint32 StoreData( TUint8* aData, TInt aCount ); |
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122 |
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123 TInt IfdCount( TInt aType ); |
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124 |
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125 void AddTagL( TInt aIfd, TUint16 aTag, TInt aType, TUint8* aData, TInt aDataLen ); |
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126 |
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127 |
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128 |
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129 private: |
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130 TPtrC8 iData; |
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131 TInt iPosition; |
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132 TBool iIntelByteOrder; |
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133 |
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134 RArray< TParseStack >iParseStack; |
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135 RPointerArray< TExifEntry >iEntry; |
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136 |
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137 TUint8* iSaveBuf; // used to store tags |
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138 TInt iSaveBufPos; |
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139 |
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140 TUint8* iSaveDataBuf; // used to store tag data |
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141 TInt iSaveDataBufPos; |
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142 |
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143 RArray< TUint32 >iDataEntry; // list of tag data pointers |
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144 |
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145 TUint8* iThumbData; |
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146 TInt iThumbLen; |
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147 }; |
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148 |
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149 #endif |