1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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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 "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 * |
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14 * Description: Metadata backend engine |
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15 * |
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16 */ |
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17 |
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18 #ifndef CMETADATA_UTILITY_ITF_H |
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19 #define CMETADATA_UTILITY_ITF_H |
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20 |
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21 #ifdef __cplusplus |
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22 |
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23 #include <e32base.h> |
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24 #include <e32std.h> |
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25 #include <e32hashtab.h> |
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26 #include <openmaxalwrapper.h> |
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27 |
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28 #include <hxmetadatautil.h> |
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29 #include <MetaDataUtility.h> |
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30 #include <MetaDataFieldContainer.h> |
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31 #include <MetaDataField.hrh> |
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32 |
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33 #define MAX_EXTENSION_SIZE 10 |
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34 #define uint32 unsigned int |
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35 |
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36 class CS60MetadataUtilityItf; |
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37 class CHXMetadataUtilityItf; |
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38 |
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39 NONSHARABLE_CLASS(CMetadataUtilityItf) |
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40 { |
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41 public: |
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42 |
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43 enum TValueEncodingType |
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44 { |
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45 EUnknownEncoding, EAsciiEncoding, EUnicodeEncoding, EBinaryEncoding, |
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46 }; |
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47 |
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48 static CMetadataUtilityItf* New(char* uri); |
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49 |
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50 CMetadataUtilityItf(); |
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51 virtual ~CMetadataUtilityItf(); |
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52 TInt ParseSource(char* uri); |
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53 TInt OpenSource(char* uri); |
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54 TInt CalculateNumMetadataItems(TUint*); |
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55 char* GetKey(TInt index); |
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56 TInt GetValueSize(TInt index); |
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57 TInt GetValue(TInt index, char* data, TInt maxLength, TInt* outSize, |
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58 TInt* encodingType); |
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59 |
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60 //helper function |
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61 //extracts left part of input descriptor upto (maxLen-1) and copies content in outPtr |
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62 //append a null terminator |
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63 static TInt ExtractUCS2(TDesC& inDes, char* outPtr, TInt maxLen); |
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64 |
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65 private: |
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66 CS60MetadataUtilityItf* m_pS60Util; |
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67 CHXMetadataUtilityItf* m_pHXUtil; |
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68 }; |
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69 |
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70 NONSHARABLE_CLASS(CS60MetadataUtilityItf) |
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71 { |
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72 public: |
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73 |
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74 static CS60MetadataUtilityItf* New(); |
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75 ~CS60MetadataUtilityItf(); |
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76 |
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77 TInt CalculateNumMetadataItems(TUint*); |
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78 |
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79 char* GetKey(TInt index); |
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80 TInt GetValueSize(TInt index); |
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81 TInt GetValue(TInt index, char* data, TInt maxLength, TInt* outSize, |
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82 TInt* encodingType); |
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83 |
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84 TInt ParseSource(TDesC&); |
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85 |
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86 char* KeyMapping(TMetaDataFieldId); |
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87 TInt ValueEncoding(TMetaDataFieldId); |
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88 |
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89 static bool IsSupportedExtension(char* extn); |
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90 |
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91 TInt Reset(); |
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92 |
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93 private: |
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94 |
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95 CS60MetadataUtilityItf(); |
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96 void ConstructL(); |
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97 |
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98 CMetaDataUtility* pMetaDataUtility; //S60MetadataUtility |
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99 |
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100 TUint uNumMetadataItems; |
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101 |
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102 }; |
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103 |
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104 NONSHARABLE_CLASS(CHXMetadataUtilityItf) |
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105 { |
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106 public: |
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107 |
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108 static CHXMetadataUtilityItf* New(); |
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109 ~CHXMetadataUtilityItf(); |
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110 |
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111 TInt CalculateNumMetadataItems(TUint*); |
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112 |
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113 char* GetKey(TInt index); |
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114 |
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115 TInt ValueEncoding(HXMetaDataKeys::EHXMetaDataId fldID); |
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116 TInt GetValueSize(TInt index); |
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117 TInt GetValue(TInt index, char* data, TInt maxLength, TInt* outSize, |
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118 TInt* encodingType); |
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119 |
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120 TInt ParseSource(TDesC&); |
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121 char* KeyMapping(HXMetaDataKeys::EHXMetaDataId); |
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122 |
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123 TInt Reset(); |
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124 |
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125 private: |
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126 CHXMetadataUtilityItf(); |
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127 void ConstructL(); |
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128 |
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129 CHXMetaDataUtility *pHXMetaDataUtility; |
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130 |
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131 TUint uNumMetadataItems; |
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132 }; |
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133 |
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134 #else |
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135 |
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136 extern void* mmf_metadata_utility_init(char*); |
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137 extern void mmf_metadata_utility_destroy(void* context); |
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138 extern XAresult mmf_metadata_utility_parse_source(void* , char*); |
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139 extern XAresult mmf_get_item_count(void* context, XAuint32* itemCount); |
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140 extern XAresult mmf_get_key_size(void* context, XAuint32 keyIndex, XAuint32* keySize); |
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141 extern XAresult mmf_get_key(void* context, XAuint32 index,XAuint32 keySize, XAMetadataInfo *pKey); |
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142 extern XAresult mmf_get_value_size(void* context, XAuint32 index, XAuint32 *pValueSize); |
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143 extern XAresult mmf_get_value(void* context, XAuint32 index, XAuint32 valueSize, XAMetadataInfo *pValue); |
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144 #endif //__cplusplus |
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145 #endif |
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