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1 /* |
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2 * Copyright (c) 2004 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: This class implements an ID3v1 and v1.1 parser as specified in |
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15 * www.id3.org. |
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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 // INCLUDE FILES |
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23 #include "MetaDataParserWMA.h" |
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24 #ifdef _DEBUG |
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25 #include <e32svr.h> |
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26 #endif |
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27 |
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28 #include <s32mem.h> |
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29 |
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30 // CONSTANTS |
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31 // ASF Header Object GUIDs |
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32 |
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33 _LIT8 (KASFContentDescriptionObject, "75B22633668E11CFA6D900AA0062CE6C"); |
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34 _LIT8 (KASFExtendedContentDescriptionObject, "D2D0A440E30711D297F000A0C95EA850"); |
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35 _LIT8 (KASFHeaderObject, "75B22630668E11CFA6D900AA0062CE6C"); |
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36 _LIT8 (KASFFilePropertiesObject, "8CABDCA1A94711CF8EE400C00C205365"); |
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37 _LIT8 (KASFHeaderExtensionObject, "5FBF03B5A92E11CF8EE300C00C205365"); |
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38 _LIT8 (KASFMetadataLibraryObject, "44231C94949849D1A1411D134E457054"); |
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39 _LIT(KWMAlbumTitle, "WM/AlbumTitle\0"); |
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40 _LIT(KWMPicture, "WM/Picture\0"); |
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41 _LIT(KWMText, "WM/Text\0"); |
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42 _LIT(KWMComposer, "WM/Composer\0"); |
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43 _LIT(KWMGenre, "WM/Genre\0"); |
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44 _LIT(KWMYear, "WM/Year\0"); |
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45 _LIT(KWMYear1, "WM/OriginalReleaseYear\0"); |
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46 _LIT(KWMOriginalArtist, "WM/OriginalArtist\0"); |
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47 _LIT(KWMTrackNumber, "WM/TrackNumber\0"); |
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48 _LIT(KWMUniqueFileIdentifier, "WM/UniqueFileIdentifier\0"); |
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49 _LIT(KWMAudioFileURL, "WM/AudioFileURL\0"); |
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50 _LIT(KWMSharedUserRating, "WM/SharedUserRating\0"); |
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51 _LIT(KWMDate, "WM/OriginalReleaseTime\0"); |
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52 #ifdef __WINDOWS_MEDIA |
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53 _LIT(KWMProvider, "WM/Provider\0"); |
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54 #endif |
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55 |
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56 |
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57 // ============================ MEMBER FUNCTIONS =============================== |
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58 |
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59 // ----------------------------------------------------------------------------- |
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60 // CMetaDataParserWMA::CMetaDataParserWMA |
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61 // C++ default constructor can NOT contain any code, that |
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62 // might leave. |
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63 // ----------------------------------------------------------------------------- |
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64 // |
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65 CMetaDataParserWMA::CMetaDataParserWMA( |
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66 CMetaDataSource& aSource ) |
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67 : iSource(aSource), |
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68 iCharacterSetId(0) |
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69 { |
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70 } |
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71 |
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72 // ----------------------------------------------------------------------------- |
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73 // CMetaDataParserWMA::ConstructL |
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74 // Symbian 2nd phase constructor can leave. |
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75 // ----------------------------------------------------------------------------- |
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76 // |
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77 void CMetaDataParserWMA::ConstructL() |
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78 { |
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79 if ( ValidateL() ) |
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80 { |
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81 User::LeaveIfError(iFs.Connect()); |
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82 // Get list of charconv supported character sets |
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83 iCharacterSet = CCnvCharacterSetConverter::CreateArrayOfCharacterSetsAvailableL(iFs); |
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84 } |
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85 #ifdef _DEBUG |
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86 RDebug::Print(_L("CMetaDataParserWMA::ConstructL - Done")); |
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87 #endif |
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88 } |
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89 |
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90 // ----------------------------------------------------------------------------- |
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91 // CMetaDataParserWMA::NewL |
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92 // Two-phased constructor. |
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93 // ----------------------------------------------------------------------------- |
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94 // |
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95 CMetaDataParserWMA* CMetaDataParserWMA::NewL( |
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96 CMetaDataSource& aSource ) |
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97 { |
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98 #ifdef _DEBUG |
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99 RDebug::Print(_L("CMetaDataParserWMA::NewL")); |
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100 #endif |
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101 CMetaDataParserWMA* self = new( ELeave ) CMetaDataParserWMA(aSource); |
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102 CleanupStack::PushL( self ); |
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103 self->ConstructL(); |
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104 CleanupStack::Pop(); |
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105 return self; |
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106 } |
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107 |
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108 // Destructor |
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109 CMetaDataParserWMA::~CMetaDataParserWMA() |
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110 { |
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111 delete iHeaderData; |
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112 delete iCharacterSet; |
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113 iFs.Close(); |
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114 } |
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115 |
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116 // ----------------------------------------------------------------------------- |
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117 // CMetaDataParserWMA::ParseL |
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118 // ----------------------------------------------------------------------------- |
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119 // |
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120 void CMetaDataParserWMA::ParseL( |
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121 const RArray<TMetaDataFieldId>& aWantedFields, |
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122 CMetaDataFieldContainer& aContainer ) |
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123 { |
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124 #ifdef _DEBUG |
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125 RDebug::Print(_L("CMetaDataParserWMA::ParseL")); |
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126 #endif |
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127 iContainer = &aContainer; |
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128 |
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129 if(iContentDescriptionObjectExists) |
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130 { |
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131 ParseContentDescriptionObject(); |
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132 } |
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133 if(iExtendedContentDescriptionObjectExists) |
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134 { |
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135 ParseExtendedContentDescriptionObjectL(); |
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136 } |
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137 if(iHeaderExtensionObjectExists) |
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138 { |
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139 ParseHeaderExtensionObjectL(); |
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140 if(iMetadataLibraryObjectExists) |
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141 { |
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142 ParseMetadataLibraryObjectL(); |
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143 } |
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144 } |
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145 TInt err = KErrNone; // ignore err, as some entry may be extracted without exception |
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146 if ( aWantedFields.Count() == 0 ) |
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147 { |
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148 TRAP(err, GetTitleL()); |
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149 TRAP(err, GetAuthorL()); |
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150 TRAP(err, GetCopyrightL()); |
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151 TRAP(err, GetCommentL()); |
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152 TRAP(err, GetJpegL()); |
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153 TRAP(err, GetExtContDesEntryL(EMetaDataRating, iSharedUserRatingOffset)); |
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154 TRAP(err, GetExtContDesEntryL(EMetaDataAlbum, iAlbumTitleOffset)); |
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155 TRAP(err, GetExtContDesEntryL(EMetaDataComment, iTextOffset)); |
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156 TRAP(err, GetExtContDesEntryL(EMetaDataComposer, iComposerOffset)); |
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157 TRAP(err, GetExtContDesEntryL(EMetaDataGenre, iGenreOffset)); |
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158 TRAP(err, GetExtContDesEntryL(EMetaDataYear, iYearOffset)); |
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159 TRAP(err, GetExtContDesEntryL(EMetaDataOriginalArtist, iOriginalArtistOffset)); |
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160 TRAP(err, GetExtContDesEntryL(EMetaDataAlbumTrack, iTrackNumberOffset)); |
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161 TRAP(err, GetExtContDesEntryL(EMetaDataUniqueFileIdentifier, iUniqueFileIdentifierOffset)); |
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162 TRAP(err, GetExtContDesEntryL(EMetaDataUrl, iAudioFileURLOffset)); |
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163 TRAP(err, GetDurationL()); |
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164 TRAP(err, GetExtContDesEntryL(EMetaDataDate, iDateOffset)); |
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165 #ifdef __WINDOWS_MEDIA |
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166 TRAP(err, GetExtContDesEntryL(EMetaDataVendor, iProviderOffset)); |
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167 #endif |
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168 } |
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169 else |
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170 { |
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171 // Look for it in the wanted field array |
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172 TInt count( aWantedFields.Count() ); |
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173 for ( TInt i = 0; i < count; i++ ) |
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174 { |
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175 switch ( aWantedFields[ i ] ) |
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176 { |
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177 case EMetaDataSongTitle: |
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178 TRAP(err, GetTitleL()); |
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179 break; |
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180 case EMetaDataArtist: |
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181 TRAP(err, GetAuthorL()); |
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182 break; |
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183 case EMetaDataCopyright: |
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184 TRAP(err, GetCopyrightL()); |
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185 break; |
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186 case EMetaDataRating: |
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187 TRAP(err, GetExtContDesEntryL(EMetaDataRating, iSharedUserRatingOffset)); |
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188 break; |
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189 case EMetaDataJpeg: |
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190 TRAP(err, GetJpegL()); |
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191 break; |
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192 case EMetaDataAlbum: |
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193 TRAP(err, GetExtContDesEntryL(EMetaDataAlbum, iAlbumTitleOffset)); |
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194 break; |
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195 case EMetaDataComment: |
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196 TRAP(err, GetExtContDesEntryL(EMetaDataComment, iTextOffset)); |
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197 break; |
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198 case EMetaDataComposer: |
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199 TRAP(err, GetExtContDesEntryL(EMetaDataComposer, iComposerOffset)); |
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200 break; |
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201 case EMetaDataGenre: |
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202 TRAP(err, GetExtContDesEntryL(EMetaDataGenre, iGenreOffset)); |
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203 break; |
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204 case EMetaDataYear: |
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205 TRAP(err, GetExtContDesEntryL(EMetaDataYear, iYearOffset)); |
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206 break; |
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207 case EMetaDataOriginalArtist: |
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208 TRAP(err, GetExtContDesEntryL(EMetaDataOriginalArtist, iOriginalArtistOffset)); |
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209 break; |
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210 case EMetaDataAlbumTrack: |
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211 TRAP(err, GetExtContDesEntryL(EMetaDataAlbumTrack, iTrackNumberOffset)); |
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212 break; |
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213 case EMetaDataUniqueFileIdentifier: |
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214 TRAP(err, GetExtContDesEntryL(EMetaDataUniqueFileIdentifier, iUniqueFileIdentifierOffset)); |
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215 break; |
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216 case EMetaDataUrl: |
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217 TRAP(err, GetExtContDesEntryL(EMetaDataUrl, iAudioFileURLOffset)); |
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218 break; |
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219 case EMetaDataDuration: |
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220 TRAP(err, GetDurationL()); |
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221 break; |
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222 case EMetaDataDate: |
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223 TRAP(err, GetExtContDesEntryL(EMetaDataDate, iDateOffset)); |
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224 break; |
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225 #ifdef __WINDOWS_MEDIA |
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226 case EMetaDataVendor: |
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227 TRAP(err, GetExtContDesEntryL(EMetaDataVendor, iProviderOffset)); |
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228 #endif |
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229 default: |
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230 break; |
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231 } |
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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 // ----------------------------------------------------------------------------- |
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237 // CMetaDataParserWMA::ValidateL |
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238 // ----------------------------------------------------------------------------- |
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239 // |
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240 TBool CMetaDataParserWMA::ValidateL() |
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241 { |
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242 TInt size; |
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243 iExists = EFalse; |
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244 User::LeaveIfError( iSource.Size( size ) ); |
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245 if ( size <= 0 ) |
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246 { |
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247 return EFalse; |
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248 } |
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249 |
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250 // ASF_Header_Object GUID 128 bits. |
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251 TBuf8<32> header; |
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252 iSource.ReadL(header, 16); |
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253 if(header.Length() < 16) |
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254 { |
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255 return EFalse; |
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256 } |
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257 FormatGUID(header); |
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258 if(header != KASFHeaderObject) |
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259 { |
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260 return EFalse; |
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261 } |
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262 // read header object size. |
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263 iSource.ReadL(header, 8); |
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264 TInt headerSize = ConvertToInt64(header); |
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265 if(headerSize <= 30) |
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266 { |
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267 return EFalse; // header object is empty. |
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268 } |
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269 if(headerSize >= size) //Header Size is too high |
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270 { |
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271 return EFalse; // header size is more than the file size. |
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272 } |
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273 // read header object |
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274 // 2~31 = 2 GB, size of header would not be greater than this, |
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275 // also, HBufC does not have a NewL with TInt64 as arguement. |
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276 iHeaderData = HBufC8::NewL(headerSize); |
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277 TPtr8 headerPtr = iHeaderData->Des(); |
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278 iSource.ReadL(headerPtr, headerSize - 24); |
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279 |
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280 TBuf8<4> objects = iHeaderData->Mid(0, 4); |
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281 TInt noOfObjects = ConvertToInt32(objects); |
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282 if(noOfObjects <= 0) |
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283 { |
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284 iExists = EFalse; |
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285 return EFalse; // no objects. |
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286 } |
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287 |
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288 TInt objOffset = 6; |
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289 if(objOffset+16 > iHeaderData->Length()) //Header Size is too small |
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290 { |
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291 return EFalse; |
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292 } |
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293 TBuf8<32> objGUID = iHeaderData->Mid(objOffset, 16); |
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294 FormatGUID(objGUID); |
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295 TBool loop = ETrue; |
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296 TInt objectCount = 0; |
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297 while (loop) |
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298 { |
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299 if(!iContentDescriptionObjectExists && objGUID == KASFContentDescriptionObject) |
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300 { |
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301 iContentDescriptionObjectExists = ETrue; |
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302 iContentDescriptionOffset = objOffset; |
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303 } |
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304 if(!iFilePropertiesObjectExists && objGUID == KASFFilePropertiesObject) |
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305 { |
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306 iFilePropertiesObjectExists = ETrue; // must exist |
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307 iFilePropertiesOffset = objOffset; |
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308 } |
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309 if(!iExtendedContentDescriptionObjectExists && objGUID == |
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310 KASFExtendedContentDescriptionObject) |
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311 { |
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312 iExtendedContentDescriptionObjectExists = ETrue; |
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313 iExtendedContentDescriptionOffset = objOffset; |
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314 } |
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315 if(!iHeaderExtensionObjectExists && objGUID == |
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316 KASFHeaderExtensionObject) |
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317 { |
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318 iHeaderExtensionObjectExists = ETrue; |
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319 iHeaderExtensionOffset = objOffset; |
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320 } |
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321 TBuf8<8> size = iHeaderData->Mid(objOffset + 16, 8); |
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322 TInt objSize = ConvertToInt64(size); // upper 32 bits? |
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323 if(0 > objSize) |
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324 { |
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325 return EFalse; |
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326 } |
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327 objOffset += objSize; |
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328 if(objOffset >= headerSize - 30 || |
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329 (iContentDescriptionObjectExists && iFilePropertiesObjectExists |
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330 && iExtendedContentDescriptionObjectExists && iHeaderExtensionObjectExists) ) |
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331 { |
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332 loop = EFalse; |
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333 } |
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334 else |
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335 { |
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336 objGUID = iHeaderData->Mid(objOffset, 16); |
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337 FormatGUID(objGUID); |
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338 objectCount++; |
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339 |
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340 if (objectCount == noOfObjects) |
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341 { |
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342 iExists = EFalse; |
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343 return EFalse; // gone through all objects |
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344 } |
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345 } |
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346 } |
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347 if(iFilePropertiesObjectExists) |
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348 { |
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349 iExists = ETrue; |
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350 } |
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351 return iExists; |
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352 } |
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353 |
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354 // ----------------------------------------------------------------------------- |
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355 // CMetaDataParserWMA::FormatGUID |
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356 // ----------------------------------------------------------------------------- |
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357 // |
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358 void CMetaDataParserWMA::FormatGUID(TDes8 &aGUID) |
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359 { |
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360 TBuf8<16> copyGUID(aGUID); |
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361 TInt i; |
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362 for(i = 0; i < 4; i++) |
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363 { |
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364 copyGUID[i] = aGUID[3-i]; |
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365 } |
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366 for(i = 4; i < 6; i++) |
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367 { |
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368 copyGUID[i] = aGUID[9 - i]; |
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369 } |
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370 for (i = 6; i < 8; i++) |
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371 { |
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372 copyGUID[i] = aGUID[13 - i]; |
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373 } |
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374 for(i = 8; i < 16 ; i++) |
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375 { |
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376 copyGUID[i] = aGUID[i]; |
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377 } |
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378 aGUID.Delete(0, 32); |
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379 for(i = 0; i <16; i++) |
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380 { |
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381 aGUID.AppendNumFixedWidthUC(copyGUID[i], EHex, 2); |
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382 } |
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383 } |
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384 |
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385 // ----------------------------------------------------------------------------- |
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386 // CMetaDataParserWMA::ConvertToInt64 |
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387 // ----------------------------------------------------------------------------- |
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388 // |
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389 TInt64 CMetaDataParserWMA::ConvertToInt64(TDesC8& aDes) |
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390 { |
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391 TInt64 num = 0; |
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392 TInt i; |
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393 for(i = 7 ; i >= 0; i--) |
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394 { |
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395 num <<= 8; |
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396 num |= aDes[i]; |
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397 } |
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398 return num; |
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399 } |
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400 |
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401 // ----------------------------------------------------------------------------- |
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402 // CMetaDataParserWMA::ConvertToInt32 |
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403 // ----------------------------------------------------------------------------- |
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404 // |
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405 TInt CMetaDataParserWMA::ConvertToInt32(TDesC8& aDes) |
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406 { |
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407 TInt num = 0; |
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408 for(TInt i = 3 ; i >= 0; i--) |
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409 { |
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410 num <<= 8; |
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411 num |= aDes[i]; |
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412 } |
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413 return num; |
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414 } |
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415 |
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416 |
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417 // ----------------------------------------------------------------------------- |
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418 // CMetaDataParserWMA::ConvertToInt16 |
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419 // ----------------------------------------------------------------------------- |
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420 // |
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421 TInt CMetaDataParserWMA::ConvertToInt16(TDesC8& aDes) |
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422 { |
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423 TInt num = 0; |
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424 for(TInt i = 1 ; i >= 0; i--) |
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425 { |
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426 num <<= 8; |
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427 num |= aDes[i]; |
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428 } |
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429 return num; |
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430 } |
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431 |
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432 // ----------------------------------------------------------------------------- |
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433 // CMetaDataParserWMA::ConvertDes8toDes16 |
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434 // ----------------------------------------------------------------------------- |
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435 // |
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436 void CMetaDataParserWMA::ConvertDes8toDes16(const TDesC8& aDes8,TDes16& aDes16) |
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437 { |
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438 for(TInt i = 0 ; i < aDes8.Length(); i+=2) |
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439 { |
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440 if(aDes16.MaxLength() <= i/2) |
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441 { |
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442 #ifdef _DEBUG |
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443 RDebug::Print(_L("CMetaDataParserWMA::ConvertDes8toDes16: i/2[%d] >= aDes16's MaxLength[%d]."), |
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444 i/2, aDes16.MaxLength()); |
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445 #endif |
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446 return; |
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447 } |
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448 aDes16.Append(aDes8[i]); |
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449 } |
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450 } |
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451 |
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452 // ----------------------------------------------------------------------------- |
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453 // CMetaDataParserWMA::GetTitleL |
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454 // ----------------------------------------------------------------------------- |
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455 // |
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456 void CMetaDataParserWMA::GetTitleL() |
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457 { |
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458 if (iTitleLength <= 0) |
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459 { |
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460 return; |
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461 } |
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462 TInt offset = iContentDescriptionOffset + 34; |
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463 if(iTitleLength - 2 <= 0 || offset + iTitleLength > iHeaderData->Length()) |
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464 { |
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465 return; // empty title or corrupt title length |
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466 } |
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467 TPtrC8 title = iHeaderData->Mid(offset, iTitleLength - 2); |
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468 HBufC* data16 = HBufC::NewLC( iTitleLength - 2); |
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469 TPtr titleUnicode( data16->Des() ); |
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470 if ( ConvertToUnicodeL(title, titleUnicode) == KErrNone ) |
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471 { |
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472 iContainer->AppendL( EMetaDataSongTitle, titleUnicode ); |
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473 } |
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474 CleanupStack::PopAndDestroy(); // data16 |
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475 } |
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476 |
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477 // ----------------------------------------------------------------------------- |
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478 // CMetaDataParserWMA::GetArtistL |
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479 // ----------------------------------------------------------------------------- |
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480 // |
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481 void CMetaDataParserWMA::GetAuthorL() |
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482 { |
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483 if (iAuthorLength <= 0) |
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484 { |
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485 return; |
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486 } |
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487 TInt offset = iContentDescriptionOffset + 34 + iTitleLength; |
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488 if(iAuthorLength - 2 <= 0 || offset + iAuthorLength > iHeaderData->Length()) |
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489 { |
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490 return; // empty author or corrupt author length |
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491 } |
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492 TPtrC8 author = iHeaderData->Mid(offset, iAuthorLength - 2); |
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493 HBufC* data16 = HBufC::NewLC( iAuthorLength - 2); |
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494 TPtr authorUnicode( data16->Des() ); |
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495 if ( ConvertToUnicodeL(author, authorUnicode) == KErrNone ) |
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496 { |
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497 iContainer->AppendL( EMetaDataArtist, authorUnicode ); |
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498 } |
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499 CleanupStack::PopAndDestroy(); // data16 |
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500 } |
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501 |
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502 // ----------------------------------------------------------------------------- |
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503 // CMetaDataParserWMA::GetCopyrightL |
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504 // ----------------------------------------------------------------------------- |
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505 // |
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506 void CMetaDataParserWMA::GetCopyrightL() |
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507 { |
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508 if (iCopyrightLength <= 0) |
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509 { |
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510 return; |
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511 } |
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512 TInt offset = iContentDescriptionOffset + 34 + iTitleLength + iAuthorLength; |
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513 if(iCopyrightLength - 2 <= 0 || offset + iCopyrightLength > iHeaderData->Length()) |
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514 { |
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515 return; // empty or corrupt length |
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516 } |
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517 TPtrC8 copyright = iHeaderData->Mid(offset, iCopyrightLength - 2); |
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518 HBufC* data16 = HBufC::NewLC( iCopyrightLength - 2); |
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519 TPtr copyrightUnicode( data16->Des() ); |
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520 if ( ConvertToUnicodeL(copyright, copyrightUnicode) == KErrNone ) |
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521 { |
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522 iContainer->AppendL( EMetaDataCopyright, copyrightUnicode ); |
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523 } |
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524 CleanupStack::PopAndDestroy(); // data16 |
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525 } |
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526 |
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527 // ----------------------------------------------------------------------------- |
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528 // CMetaDataParserWMA::GetCommentL |
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529 // ----------------------------------------------------------------------------- |
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530 // |
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531 void CMetaDataParserWMA::GetCommentL() |
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532 { |
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533 if (iDescriptionLength <= 0) |
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534 { |
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535 return; |
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536 } |
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537 TInt offset = iContentDescriptionOffset + 34 + iTitleLength + iAuthorLength + iCopyrightLength; |
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538 if(iDescriptionLength - 2 <= 0 || offset + iDescriptionLength > iHeaderData->Length()) |
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539 { |
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540 return; // empty comment or corrupt comment length |
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541 } |
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542 TPtrC8 comments = iHeaderData->Mid(offset, iDescriptionLength - 2); |
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543 HBufC* data16 = HBufC::NewLC( iDescriptionLength - 2); |
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544 TPtr commentsUnicode( data16->Des() ); |
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545 if ( ConvertToUnicodeL(comments, commentsUnicode) == KErrNone ) |
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546 { |
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547 iContainer->AppendL( EMetaDataComment, commentsUnicode ); |
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548 } |
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549 CleanupStack::PopAndDestroy(); // data16 |
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550 } |
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551 |
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552 |
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553 // ----------------------------------------------------------------------------- |
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554 // CMetaDataParserWMA::GetJpegL |
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555 // ----------------------------------------------------------------------------- |
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556 // |
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557 void CMetaDataParserWMA::GetJpegL() |
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558 { |
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559 if (iPictureOffset <= 0) |
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560 { |
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561 return; |
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562 } |
|
563 |
|
564 TInt offset = iPictureOffset; |
|
565 if(!iMetadatLibraryObjectJpegExists) |
|
566 { |
|
567 TPtrC8 dataType = iHeaderData->Mid(offset, 2); |
|
568 offset += 2; |
|
569 TInt dataTypeInt = ConvertToInt16(dataType); |
|
570 if(dataTypeInt != 1) |
|
571 { |
|
572 return; |
|
573 } |
|
574 |
|
575 TPtrC8 lengthData = iHeaderData->Mid(offset, 2); |
|
576 offset += 2; |
|
577 TInt length = ConvertToInt16(lengthData); |
|
578 if(length <= 0) |
|
579 { |
|
580 return; |
|
581 } |
|
582 } |
|
583 TPtrC8 picData = iHeaderData->Mid(offset, 1); |
|
584 offset += 1; |
|
585 TInt picType = 0; |
|
586 picType |= picData[0]; |
|
587 if(picType != 3) |
|
588 { |
|
589 return; // only Front Album Cover supported |
|
590 } |
|
591 |
|
592 TPtrC8 picLengthData = iHeaderData->Mid(offset, 4); |
|
593 offset += 4; |
|
594 TInt picLength = ConvertToInt32(picLengthData); |
|
595 if(picLength <= 0) |
|
596 { |
|
597 return; |
|
598 } |
|
599 |
|
600 _LIT8(KNULL, "\0\0"); |
|
601 TPtrC8 data = iHeaderData->Mid(offset, picLength); |
|
602 TInt pos = data.Find(KNULL); |
|
603 if(pos != 0) |
|
604 { |
|
605 pos++; // for unicode coding for strings. |
|
606 } |
|
607 // check mime type |
|
608 if(pos != KErrNotFound) |
|
609 { |
|
610 HBufC8 *mimeType = iHeaderData->Mid(offset, pos + 2).AllocLC(); |
|
611 offset += pos + 2; |
|
612 HBufC* name16 = HBufC::NewLC( (pos+2)/2); |
|
613 TPtr mimeType16( name16->Des() ); |
|
614 ConvertDes8toDes16(*mimeType, mimeType16); |
|
615 _LIT(KJPEG, "image/jpeg\0"); |
|
616 _LIT(KJPG, "image/jpg\0"); |
|
617 if(mimeType16.Compare(KJPEG) != 0 && mimeType16.Compare(KJPG) != 0) |
|
618 { |
|
619 CleanupStack::PopAndDestroy(2, mimeType); |
|
620 return; // only JPEG & JPG supported |
|
621 } |
|
622 CleanupStack::PopAndDestroy(2); // mimeType16, mimeType |
|
623 } |
|
624 |
|
625 // skip the picture description |
|
626 TPtrC8 picDesc = iHeaderData->Mid(offset, picLength); |
|
627 pos = picDesc.Find(KNULL); |
|
628 if(pos != 0) |
|
629 { |
|
630 pos++; // for unicode coding for strings. |
|
631 } |
|
632 offset += pos + 2; |
|
633 |
|
634 // picture data |
|
635 TPtrC8 pic8 = iHeaderData->Mid(offset, picLength); |
|
636 iContainer->AppendL( EMetaDataJpeg, pic8 ); |
|
637 } |
|
638 |
|
639 |
|
640 // ----------------------------------------------------------------------------- |
|
641 // CMetaDataParserWMA::GetExtContDesEntryL |
|
642 // ----------------------------------------------------------------------------- |
|
643 // |
|
644 TBool CMetaDataParserWMA::GetExtContDesEntryL(TMetaDataFieldId aFieldId, TInt aOffset) |
|
645 { |
|
646 TBool ret = EFalse; |
|
647 if(iExtendedContentDescriptionCount == 0) |
|
648 { |
|
649 return ret; |
|
650 } |
|
651 TPtrC8 dataType = iHeaderData->Mid(aOffset, 2); |
|
652 TInt dataTypeInt = ConvertToInt16(dataType); |
|
653 if(dataTypeInt == 0x00) |
|
654 { |
|
655 TPtrC8 lengthData = iHeaderData->Mid(aOffset + 2, 2); |
|
656 TInt length = ConvertToInt16(lengthData); |
|
657 if(length <= 0) |
|
658 { |
|
659 return ret; |
|
660 } |
|
661 TPtrC8 data = iHeaderData->Mid(aOffset + 4, length - 2); |
|
662 HBufC* data16 = HBufC::NewLC(length - 2); |
|
663 TPtr dataUnicode( data16->Des() ); |
|
664 if ( ConvertToUnicodeL(data, dataUnicode) == KErrNone ) |
|
665 { |
|
666 iContainer->AppendL( aFieldId, dataUnicode ); |
|
667 ret = ETrue; |
|
668 } |
|
669 CleanupStack::PopAndDestroy(); // data16 |
|
670 } |
|
671 else if(dataTypeInt == 0x03) |
|
672 { |
|
673 TPtrC8 lengthData = iHeaderData->Mid(aOffset + 2, 2); |
|
674 TInt length = ConvertToInt16(lengthData); |
|
675 if(length != 4) |
|
676 { |
|
677 return ret; |
|
678 } |
|
679 TPtrC8 data = iHeaderData->Mid(aOffset + 4, length); |
|
680 TInt dword = ConvertToInt32(data); |
|
681 const TInt KMaxIntBufferSize = 10; |
|
682 HBufC* data16 = HBufC::NewLC(KMaxIntBufferSize); |
|
683 TPtr dataString( data16->Des() ); |
|
684 dataString.Num(dword); |
|
685 iContainer->AppendL( aFieldId, dataString ); |
|
686 CleanupStack::PopAndDestroy(); // data16 |
|
687 ret = ETrue; |
|
688 } |
|
689 return ret; |
|
690 } |
|
691 |
|
692 // ----------------------------------------------------------------------------- |
|
693 // CMetaDataParserWMA::GetDurationL |
|
694 // ----------------------------------------------------------------------------- |
|
695 // |
|
696 void CMetaDataParserWMA::GetDurationL() |
|
697 { |
|
698 TInt offset = iFilePropertiesOffset + 16; |
|
699 TPtrC8 size8 = iHeaderData->Mid(offset, 8); |
|
700 TInt size = ConvertToInt64(size8); |
|
701 offset = iFilePropertiesOffset + 88; |
|
702 TPtrC8 flags = iHeaderData->Mid(offset, 4); |
|
703 TInt broadcastBit = (TInt) (flags[0] & 0x01); |
|
704 if(broadcastBit == 1) |
|
705 { |
|
706 return; // duration not valid. |
|
707 } |
|
708 //offset = iFilePropertiesOffset + 48; |
|
709 TPtrC8 duration8 = iHeaderData->Mid(offset - 24, 8); // 100 nanosec units |
|
710 TReal sec = ((TReal)ConvertToInt64(duration8)) / 10000000; // seconds |
|
711 TBuf16<10> des16; |
|
712 des16.Num(sec, TRealFormat (9, 3)); |
|
713 iContainer->AppendL( EMetaDataDuration, des16 ); |
|
714 } |
|
715 |
|
716 |
|
717 |
|
718 // ----------------------------------------------------------------------------- |
|
719 // CMetaDataParserWMA::ConvertToUnicodeL |
|
720 // ----------------------------------------------------------------------------- |
|
721 // |
|
722 TInt CMetaDataParserWMA::ConvertToUnicodeL( |
|
723 const TDesC8& aDesc, |
|
724 TDes16& aUnicode ) |
|
725 { |
|
726 TPtrC8 unicodeData; |
|
727 TUint characterSetId = 0; |
|
728 CCnvCharacterSetConverter* charSetConv = CCnvCharacterSetConverter::NewLC(); |
|
729 TInt state = CCnvCharacterSetConverter::KStateDefault; |
|
730 |
|
731 // ASF (WMA) file format has UTF-16 LittleEndian characters. |
|
732 characterSetId = KCharacterSetIdentifierUnicodeLittle; |
|
733 unicodeData.Set( aDesc ); |
|
734 |
|
735 charSetConv->PrepareToConvertToOrFromL(characterSetId, *iCharacterSet, iFs); |
|
736 TInt err = charSetConv->ConvertToUnicode(aUnicode, unicodeData, state); |
|
737 |
|
738 #ifdef _DEBUG |
|
739 RDebug::Print(_L("CMetaDataParserID3v24::ConvertToUnicode :-> Tag Size[%d] Unicode Tag Size[%d]Bytes Unconverted[%d]"), |
|
740 unicodeData.Length(), aUnicode.Length(), err); |
|
741 #endif |
|
742 |
|
743 CleanupStack::PopAndDestroy(); // charSetConv |
|
744 return err; |
|
745 } |
|
746 |
|
747 |
|
748 // ----------------------------------------------------------------------------- |
|
749 // CMetaDataParserWMA::ParseContentDescriptionObject |
|
750 // ----------------------------------------------------------------------------- |
|
751 // |
|
752 void CMetaDataParserWMA::ParseContentDescriptionObject() |
|
753 { |
|
754 TBuf8<2> data = iHeaderData->Mid(iContentDescriptionOffset + 24, 2); |
|
755 iTitleLength = ConvertToInt16(data); |
|
756 data = iHeaderData->Mid(iContentDescriptionOffset + 26, 2); |
|
757 iAuthorLength = ConvertToInt16(data); |
|
758 data = iHeaderData->Mid(iContentDescriptionOffset + 28, 2); |
|
759 iCopyrightLength = ConvertToInt16(data); |
|
760 data = iHeaderData->Mid(iContentDescriptionOffset + 30, 2); |
|
761 iDescriptionLength = ConvertToInt16(data); |
|
762 data = iHeaderData->Mid(iContentDescriptionOffset + 32, 2); |
|
763 iRatingLength = ConvertToInt16(data); |
|
764 return; |
|
765 } |
|
766 |
|
767 |
|
768 // ----------------------------------------------------------------------------- |
|
769 // CMetaDataParserWMA::ParseExtendedContentDescriptionObjectL |
|
770 // ----------------------------------------------------------------------------- |
|
771 // |
|
772 void CMetaDataParserWMA::ParseExtendedContentDescriptionObjectL() |
|
773 { |
|
774 TBuf8<2> data = iHeaderData->Mid(iExtendedContentDescriptionOffset + 24, 2); |
|
775 iExtendedContentDescriptionCount = ConvertToInt16(data); |
|
776 TInt offset = iExtendedContentDescriptionOffset + 26; |
|
777 for(TInt i = 0 ; i < iExtendedContentDescriptionCount; i ++) |
|
778 { |
|
779 TBuf8<2> data1 = iHeaderData->Mid(offset, 2); |
|
780 offset += 2; |
|
781 TInt nameLength = ConvertToInt16(data1); |
|
782 if(nameLength > 0 && iHeaderData->Length() >= (offset+nameLength)) |
|
783 { |
|
784 HBufC8 *name = iHeaderData->Mid(offset, nameLength).AllocLC(); |
|
785 offset += nameLength; |
|
786 HBufC* data16 = HBufC::NewLC(nameLength/2 == 0 ? 1 : nameLength/2); |
|
787 TPtr name16( data16->Des() ); |
|
788 ConvertDes8toDes16(*name, name16); |
|
789 |
|
790 if(!name16.Compare(KWMAlbumTitle)) |
|
791 { |
|
792 iAlbumTitleOffset = offset; |
|
793 } |
|
794 else if(!name16.Compare(KWMPicture)) |
|
795 { |
|
796 iPictureOffset = offset; |
|
797 } |
|
798 else if(!name16.Compare(KWMText)) |
|
799 { |
|
800 iTextOffset = offset; |
|
801 } |
|
802 else if(!name16.Compare(KWMComposer)) |
|
803 { |
|
804 iComposerOffset = offset; |
|
805 } |
|
806 else if(!name16.Compare(KWMGenre)) |
|
807 { |
|
808 iGenreOffset = offset; |
|
809 } |
|
810 else if(!name16.Compare(KWMYear) || !name16.Compare(KWMYear1)) |
|
811 { |
|
812 iYearOffset = offset; |
|
813 } |
|
814 else if(!name16.Compare(KWMOriginalArtist)) |
|
815 { |
|
816 iOriginalArtistOffset = offset; |
|
817 } |
|
818 else if(!name16.Compare(KWMTrackNumber)) |
|
819 { |
|
820 iTrackNumberOffset = offset; |
|
821 } |
|
822 else if(!name16.Compare(KWMUniqueFileIdentifier)) |
|
823 { |
|
824 iUniqueFileIdentifierOffset = offset; |
|
825 } |
|
826 else if(!name16.Compare(KWMAudioFileURL)) |
|
827 { |
|
828 iAudioFileURLOffset = offset; |
|
829 } |
|
830 else if(!name16.Compare(KWMSharedUserRating)) |
|
831 { |
|
832 iSharedUserRatingOffset = offset; |
|
833 } |
|
834 else if(!name16.Compare(KWMDate)) |
|
835 { |
|
836 iDateOffset = offset; |
|
837 } |
|
838 #ifdef __WINDOWS_MEDIA |
|
839 else if(!name16.Compare(KWMProvider)) |
|
840 { |
|
841 iProviderOffset = offset; |
|
842 } |
|
843 #endif |
|
844 |
|
845 offset += 2; |
|
846 TBuf8<2> valueLengthData = iHeaderData->Mid(offset, 2); |
|
847 offset += 2; |
|
848 TInt valueLength = ConvertToInt16(valueLengthData); |
|
849 offset += valueLength; |
|
850 CleanupStack::PopAndDestroy(2); //data16, name |
|
851 if(iHeaderData->Length() < offset) |
|
852 { |
|
853 #ifdef _DEBUG |
|
854 RDebug::Print(_L("CMetaDataParserWMA::ParseExtendedContentDescriptionObjectL: offset[%d] > iHeaderData's Length[%d]."), |
|
855 offset, iHeaderData->Length()); |
|
856 #endif |
|
857 return; |
|
858 } |
|
859 } |
|
860 } |
|
861 } |
|
862 |
|
863 // ----------------------------------------------------------------------------- |
|
864 // CMetaDataParserWMA::ParseMetadataLibraryObjectL |
|
865 // ----------------------------------------------------------------------------- |
|
866 // |
|
867 void CMetaDataParserWMA::ParseMetadataLibraryObjectL() |
|
868 { |
|
869 TBuf8<8> objectSizedata = iHeaderData->Mid(iMetadataLibraryOffset + 16, 8); |
|
870 iMetadataLibraryObjectSize = ConvertToInt64(objectSizedata); |
|
871 TBuf8<2> recordsCountdata = iHeaderData->Mid(iMetadataLibraryOffset + 24, 2); |
|
872 iMetadataLibraryDescriptionCount = ConvertToInt16(recordsCountdata); |
|
873 TInt offset = iMetadataLibraryOffset + 26; |
|
874 for(TInt i = 0 ; i < iMetadataLibraryDescriptionCount; i ++) |
|
875 { |
|
876 offset += 4; // skipping LanguageID (2 Bytes) and StreamID (2 Bytes) fields |
|
877 //Reading Name Length |
|
878 TBuf8<2> nameLengthdata = iHeaderData->Mid(offset, 2); |
|
879 offset += 2; |
|
880 TInt nameLength = ConvertToInt16(nameLengthdata); |
|
881 TBuf8<2> dataTypedata = iHeaderData->Mid(offset, 2); |
|
882 offset += 2; |
|
883 TInt dataType = ConvertToInt16(dataTypedata); |
|
884 TBuf8<4> dataLengthdata = iHeaderData->Mid(offset, 4); |
|
885 offset += 4; |
|
886 TInt32 dataLength = ConvertToInt32(dataLengthdata); |
|
887 |
|
888 if(nameLength > 0) |
|
889 { |
|
890 HBufC8 *name = iHeaderData->Mid(offset, nameLength).AllocLC(); |
|
891 offset += nameLength; |
|
892 HBufC* data16 = HBufC::NewLC( nameLength/2); |
|
893 TPtr name16( data16->Des() ); |
|
894 ConvertDes8toDes16(*name, name16); |
|
895 if(!name16.Compare(KWMPicture)) |
|
896 { |
|
897 iPictureOffset = offset; |
|
898 iMetadatLibraryObjectJpegExists = ETrue; |
|
899 } |
|
900 offset += dataLength; |
|
901 CleanupStack::PopAndDestroy(2); //data16, name |
|
902 } |
|
903 } |
|
904 } |
|
905 |
|
906 // ----------------------------------------------------------------------------- |
|
907 // CMetaDataParserWMA::ParseHeaderExtensionObjectL |
|
908 // ----------------------------------------------------------------------------- |
|
909 // |
|
910 void CMetaDataParserWMA::ParseHeaderExtensionObjectL() |
|
911 { |
|
912 TInt length = iHeaderData->Length(); |
|
913 if ( iHeaderExtensionOffset + 46 > length) |
|
914 { |
|
915 return; |
|
916 } |
|
917 |
|
918 TBuf8<8> objectSizedata = iHeaderData->Mid(iHeaderExtensionOffset + 16, 8); |
|
919 iHeaderExtensionObjectSize = ConvertToInt64(objectSizedata); |
|
920 TBuf8<4> headerExtensiondata = iHeaderData->Mid(iHeaderExtensionOffset + 42, 4); |
|
921 |
|
922 TInt32 headerExtensionDataSize = ConvertToInt32(headerExtensiondata); |
|
923 if(headerExtensionDataSize != iHeaderExtensionObjectSize - 46) |
|
924 { |
|
925 return; |
|
926 } |
|
927 TInt objOffset = iHeaderExtensionOffset + 46; |
|
928 |
|
929 if ((objOffset < 0) || (objOffset + 16 > length)) // verify objOffset is not negative |
|
930 { |
|
931 return; |
|
932 } |
|
933 TBuf8<32> objGUID = iHeaderData->Mid(objOffset, 16); |
|
934 FormatGUID(objGUID); |
|
935 TBool loop = ETrue; |
|
936 while (loop) |
|
937 { |
|
938 if(!iMetadataLibraryObjectExists && objGUID == |
|
939 KASFMetadataLibraryObject) |
|
940 { |
|
941 iMetadataLibraryObjectExists = ETrue; |
|
942 iMetadataLibraryOffset = objOffset; |
|
943 } |
|
944 |
|
945 if (objOffset + 24 > length) |
|
946 { |
|
947 return; |
|
948 } |
|
949 |
|
950 TBuf8<8> size = iHeaderData->Mid(objOffset + 16, 8); |
|
951 TInt objSize = ConvertToInt64(size); // upper 32 bits? |
|
952 if(objSize == 0) |
|
953 { |
|
954 return; |
|
955 } |
|
956 objOffset += objSize; |
|
957 |
|
958 if ((objOffset < 0) || (objOffset + 16 > length)) |
|
959 { |
|
960 return; |
|
961 } |
|
962 objGUID = iHeaderData->Mid(objOffset, 16); |
|
963 FormatGUID(objGUID); |
|
964 TInt val = objOffset - iHeaderExtensionOffset; |
|
965 if((val > 0) && (val < iHeaderExtensionObjectSize)) |
|
966 { |
|
967 loop = ETrue; |
|
968 } |
|
969 else |
|
970 { |
|
971 loop = EFalse; |
|
972 } |
|
973 } |
|
974 } |
|
975 |
|
976 // End of File |