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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 parsing of ID3v2.2 according to the |
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15 * specification found in www.id3.org. Note that only a selected |
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16 * frames are supported at this time. |
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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 <libc/stdlib.h> |
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24 |
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25 #include "MetaDataParserID3v22.h" |
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26 |
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27 // CONSTANTS |
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28 // (ID3v2.2 specification found in www.id3.org) |
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29 const TInt KID3v2HeaderLength = 10; |
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30 const TInt KID3v2FrameHeaderLength = 6; |
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31 const TInt KID3v2FrameIdLength = 3; |
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32 const TInt KID3v2GenreNameLength = 24; |
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33 |
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34 _LIT8( KID3v2FrameIdTitle, "TT2" ); |
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35 _LIT8( KID3v2FrameIdArtist, "TP1" ); |
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36 _LIT8( KID3v2FrameIdAlbum, "TAL" ); |
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37 _LIT8( KID3v2FrameIdYear, "TYE" ); |
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38 _LIT8( KID3v2FrameIdComment, "COM" ); |
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39 _LIT8( KID3v2FrameIdTrack, "TRK" ); |
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40 _LIT8( KID3v2FrameIdGenre, "TCO" ); |
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41 _LIT8( KID3v2FrameIdComposer, "TCM" ); |
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42 _LIT8( KID3v2FrameIdCopyright, "TCR" ); |
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43 _LIT8( KID3v2FrameIdOriginalArtist, "TOA" ); |
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44 _LIT8( KID3v2FrameIdUrl, "WAF" ); |
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45 _LIT8( KID3v2FrameIdUserUrl, "WXX" ); |
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46 _LIT8( KID3v2FrameIdJpeg, "PIC" ); |
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47 _LIT8( KID3v2FrameIdDuration, "TLE" ); |
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48 _LIT8( KID3v2FrameIdDate, "TDA" ); |
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49 _LIT8( KID3v2FrameIdRating, "POP" ); |
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50 |
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51 _LIT8( KID3v2ImageFormatPng, "PNG" ); |
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52 _LIT8( KID3v2ImageFormatJpeg, "JPG" ); |
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53 |
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54 |
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55 // ----------------------------------------------------------------------------- |
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56 // (ID3v2.2 specification found in www.id3.org) |
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57 // |
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58 // $00 ISO-8859-1 [ISO-8859-1]. Terminated with $00. |
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59 // $01 UCS-2 encoded Unicode [UNICODE]. |
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60 // Terminated with $00 00. |
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61 // ----------------------------------------------------------------------------- |
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62 const TInt KMetaDataParserAsciiEncoding = 0; |
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63 const TInt KMetaDataParserUnicodeEncoding = 1; |
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64 |
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65 |
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66 // ============================ MEMBER FUNCTIONS =============================== |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // CMetaDataParserID3v22::CMetaDataParserID3v22 |
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70 // C++ default constructor can NOT contain any code, that |
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71 // might leave. |
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72 // ----------------------------------------------------------------------------- |
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73 // |
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74 CMetaDataParserID3v22::CMetaDataParserID3v22( |
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75 CMetaDataSource& aSource ) |
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76 : CMetaDataParserID3v2(aSource) |
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77 { |
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78 } |
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79 |
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80 // ----------------------------------------------------------------------------- |
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81 // CMetaDataParserID3v22::ConstructL |
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82 // Symbian 2nd phase constructor can leave. |
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83 // ----------------------------------------------------------------------------- |
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84 // |
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85 void CMetaDataParserID3v22::ConstructL() |
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86 { |
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87 User::LeaveIfError(iFs.Connect()); |
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88 iExists = ETrue; |
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89 #ifdef _DEBUG |
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90 RDebug::Print(_L("CMetaDataParserID3v22::ConstructL - Done")); |
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91 #endif |
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92 } |
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93 |
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94 // ----------------------------------------------------------------------------- |
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95 // CMetaDataParserID3v22::NewL |
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96 // Two-phased constructor. |
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97 // ----------------------------------------------------------------------------- |
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98 // |
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99 CMetaDataParserID3v22* CMetaDataParserID3v22::NewL( |
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100 CMetaDataSource& aSource ) |
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101 { |
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102 #ifdef _DEBUG |
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103 RDebug::Print(_L("CMetaDataParserID3v22::NewL")); |
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104 #endif |
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105 CMetaDataParserID3v22* self = new( ELeave ) CMetaDataParserID3v22( aSource ); |
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106 CleanupStack::PushL( self ); |
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107 self->ConstructL(); |
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108 CleanupStack::Pop(); |
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109 return self; |
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110 } |
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111 |
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112 // Destructor |
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113 CMetaDataParserID3v22::~CMetaDataParserID3v22() |
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114 { |
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115 iFs.Close(); |
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116 } |
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117 |
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118 // ----------------------------------------------------------------------------- |
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119 // CMetaDataParserID3v22::PrepareToParseL |
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120 // ----------------------------------------------------------------------------- |
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121 // |
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122 void CMetaDataParserID3v22::PrepareToParseL() |
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123 { |
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124 #ifdef _DEBUG |
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125 RDebug::Print(_L("CMetaDataParserID3v22::PrepareToParseL")); |
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126 #endif |
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127 // Most of validation was already done by builder. |
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128 TBuf8<KID3v2HeaderLength> header; |
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129 iSource->ReadL( 0, header ); |
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130 // ID3v2.2 header consists of following parts: |
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131 // File identifier "ID3" |
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132 // Version $02 00 |
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133 // Flags %xx000000 |
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134 // Size 4 * %0xxxxxxx |
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135 |
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136 // Read the data length |
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137 iFrameDataSize = 0; |
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138 for ( TInt i = 6; i < 10; i++ ) |
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139 { |
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140 iFrameDataSize <<= 7; |
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141 iFrameDataSize |= header[i] & 0x7f; |
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142 } |
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143 |
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144 iFrameOffset = KID3v2HeaderLength; |
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145 // iFrameDataSize is the entire size of ID3 tag including the header |
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146 iFrameDataSize += iFrameOffset; |
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147 } |
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148 |
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149 // ----------------------------------------------------------------------------- |
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150 // CMetaDataParserID3v22::GetNextFieldL |
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151 // ----------------------------------------------------------------------------- |
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152 // |
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153 void CMetaDataParserID3v22::GetNextFieldL( |
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154 TMetaDataFieldId& aFieldId, |
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155 TInt& aFrameHeaderSize, |
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156 TInt& aFrameSize ) |
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157 { |
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158 TBuf8<KID3v2FrameHeaderLength> frameHeader; |
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159 iSource->ReadL( iFrameOffset, frameHeader ); |
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160 // ID3v2.2 frame header consists of following parts: |
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161 // Frame identifier $xx xx xx |
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162 // Size $xx xx xx |
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163 |
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164 aFrameSize = 0; |
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165 |
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166 if(!frameHeader.Length()) |
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167 User::Leave(KErrCorrupt); |
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168 |
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169 for ( TInt i = 3; i < 6; i++ ) |
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170 { |
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171 aFrameSize <<= 8; |
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172 aFrameSize |= frameHeader[i]; |
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173 } |
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174 |
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175 aFrameHeaderSize = KID3v2FrameHeaderLength; |
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176 TPtrC8 frameId = frameHeader.Left( KID3v2FrameIdLength ); |
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177 _LIT8(KEMPTY, "\0\0\0"); |
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178 TBuf8<3> empty (KEMPTY); |
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179 if ( aFrameSize == 0 && frameId == empty) |
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180 { |
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181 // We have hit the padding -> no more fields to read |
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182 aFieldId = EUnknownMetaDataField; |
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183 aFrameHeaderSize = 0; |
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184 return; |
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185 } |
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186 else if (aFrameSize == 0) |
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187 { |
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188 aFieldId = EUnknownMetaDataField; |
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189 return; |
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190 } |
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191 |
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192 if ( frameId.Compare( KID3v2FrameIdTitle ) == 0 ) |
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193 { |
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194 aFieldId = EMetaDataSongTitle; |
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195 } |
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196 else if ( frameId.Compare( KID3v2FrameIdArtist ) == 0 ) |
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197 { |
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198 aFieldId = EMetaDataArtist; |
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199 } |
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200 else if ( frameId.Compare( KID3v2FrameIdAlbum ) == 0 ) |
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201 { |
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202 aFieldId = EMetaDataAlbum; |
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203 } |
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204 else if ( frameId.Compare( KID3v2FrameIdYear ) == 0 ) |
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205 { |
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206 aFieldId = EMetaDataYear; |
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207 } |
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208 else if ( frameId.Compare( KID3v2FrameIdComment ) == 0 ) |
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209 { |
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210 aFieldId = EMetaDataComment; |
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211 } |
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212 else if ( frameId.Compare( KID3v2FrameIdTrack ) == 0 ) |
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213 { |
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214 aFieldId = EMetaDataAlbumTrack; |
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215 } |
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216 else if ( frameId.Compare( KID3v2FrameIdGenre ) == 0 ) |
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217 { |
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218 aFieldId = EMetaDataGenre; |
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219 } |
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220 else if ( frameId.Compare( KID3v2FrameIdComposer ) == 0 ) |
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221 { |
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222 aFieldId = EMetaDataComposer; |
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223 } |
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224 else if ( frameId.Compare( KID3v2FrameIdCopyright ) == 0 ) |
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225 { |
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226 aFieldId = EMetaDataCopyright; |
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227 } |
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228 else if ( frameId.Compare( KID3v2FrameIdOriginalArtist ) == 0 ) |
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229 { |
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230 aFieldId = EMetaDataOriginalArtist; |
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231 } |
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232 else if ( frameId.Compare( KID3v2FrameIdUrl ) == 0 ) |
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233 { |
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234 aFieldId = EMetaDataUrl; |
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235 } |
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236 else if ( frameId.Compare( KID3v2FrameIdUserUrl ) == 0 ) |
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237 { |
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238 aFieldId = EMetaDataUserUrl; |
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239 } |
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240 else if ( frameId.Compare( KID3v2FrameIdJpeg ) == 0 ) |
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241 { |
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242 aFieldId = EMetaDataJpeg; |
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243 } |
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244 else if ( frameId.Compare( KID3v2FrameIdDuration ) == 0 ) |
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245 { |
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246 aFieldId = EMetaDataDuration; |
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247 } |
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248 else if ( frameId.Compare( KID3v2FrameIdDate ) == 0 ) |
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249 { |
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250 aFieldId = EMetaDataDate; |
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251 } |
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252 else if ( frameId.Compare( KID3v2FrameIdRating ) == 0 ) |
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253 { |
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254 aFieldId = EMetaDataRating; |
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255 } |
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256 else |
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257 { |
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258 aFieldId = EUnknownMetaDataField; |
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259 } |
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260 } |
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261 |
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262 // ----------------------------------------------------------------------------- |
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263 // CMetaDataParserID3v22::GetUserUrlL |
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264 // ----------------------------------------------------------------------------- |
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265 // |
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266 void CMetaDataParserID3v22::GetUserUrlL( |
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267 TInt aSize ) |
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268 { |
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269 #ifdef _DEBUG |
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270 RDebug::Print(_L("CMetaDataParserID3v23::GetUserUrlL")); |
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271 #endif |
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272 HBufC8* frame = HBufC8::NewLC( aSize ); |
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273 TPtr8 des( frame->Des() ); |
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274 |
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275 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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276 |
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277 if ( des.Length() < aSize ) |
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278 { |
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279 // Partial frame |
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280 User::Leave( KErrCorrupt ); |
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281 } |
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282 |
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283 TInt encoding = (TInt) (des.Left(1))[0]; |
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284 |
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285 if(encoding == 0x00) |
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286 { |
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287 _LIT8(KNULL, "\0"); |
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288 TInt descOffset = des.Find(KNULL); |
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289 if(descOffset + 2 > aSize) |
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290 { |
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291 CleanupStack::PopAndDestroy(); // frame |
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292 return; // empty frame |
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293 } |
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294 TPtrC8 info = des.Mid(descOffset + 2); |
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295 TInt length = info.Length(); |
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296 if ( length ) |
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297 { |
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298 HBufC* data16 = HBufC::NewLC( length ); |
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299 TPtr unicode( data16->Des() ); |
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300 unicode.Copy( info ); |
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301 iContainer->AppendL( EMetaDataUserUrl, unicode ); |
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302 CleanupStack::PopAndDestroy(); // data16 |
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303 } |
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304 } |
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305 else |
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306 { |
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307 _LIT8(KNULL, "\0\0"); |
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308 TInt descOffset = des.Find(KNULL); |
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309 if(descOffset + 3 > aSize) |
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310 { |
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311 CleanupStack::PopAndDestroy(); // frame |
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312 return; // empty frame |
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313 } |
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314 TPtrC8 info = des.Mid(descOffset + 3); |
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315 TInt length = info.Length(); |
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316 if ( length ) |
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317 { |
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318 HBufC* data16 = HBufC::NewLC( length ); |
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319 TPtr unicode( data16->Des() ); |
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320 unicode.Copy( info ); |
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321 iContainer->AppendL( EMetaDataUserUrl, unicode ); |
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322 CleanupStack::PopAndDestroy(); // data16 |
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323 } |
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324 } |
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325 |
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326 CleanupStack::PopAndDestroy(); // frame |
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327 } |
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328 |
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329 // ----------------------------------------------------------------------------- |
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330 // CMetaDataParserID3v22::GetTextInfoL |
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331 // ----------------------------------------------------------------------------- |
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332 // |
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333 void CMetaDataParserID3v22::GetTextInfoL( |
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334 TMetaDataFieldId aFieldId, |
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335 TInt aSize ) |
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336 { |
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337 #ifdef _DEBUG |
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338 RDebug::Print(_L("CMetaDataParserID3v22::GetTextInfoL")); |
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339 #endif |
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340 HBufC8* frame = HBufC8::NewLC( aSize ); |
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341 TPtr8 des( frame->Des() ); |
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342 |
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343 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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344 |
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345 if ( des.Length() < aSize ) |
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346 { |
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347 // Partial frame |
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348 User::Leave( KErrCorrupt ); |
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349 } |
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350 |
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351 TInt encoding = (TInt) (des.Left(1))[0]; |
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352 TPtrC8 info = StripTrailingZeroes( des.Mid(1), encoding); |
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353 TInt length = info.Length(); |
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354 if ( length ) |
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355 { |
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356 HBufC* data16 = HBufC::NewLC( length ); |
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357 TPtr unicode( data16->Des() ); |
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358 if ( ConvertToUnicodeL(encoding, info, unicode) == KErrNone ) |
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359 { |
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360 iContainer->AppendL( aFieldId, unicode ); |
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361 } |
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362 CleanupStack::PopAndDestroy(); // data16 |
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363 } |
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364 |
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365 CleanupStack::PopAndDestroy(); // frame |
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366 } |
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367 |
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368 // ----------------------------------------------------------------------------- |
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369 // CMetaDataParserID3v22::GetGenreL |
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370 // ----------------------------------------------------------------------------- |
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371 // |
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372 void CMetaDataParserID3v22::GetGenreL( |
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373 TInt aSize ) |
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374 { |
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375 #ifdef _DEBUG |
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376 RDebug::Print(_L("CMetaDataParserID3v22::GetGenreL")); |
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377 #endif |
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378 |
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379 HandleV2GetGenreL( aSize, KID3v2FrameHeaderLength, KID3v2GenreNameLength ); |
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380 } |
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381 |
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382 |
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383 // ----------------------------------------------------------------------------- |
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384 // CMetaDataParserID3v22::GetTextYearL |
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385 // ----------------------------------------------------------------------------- |
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386 // |
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387 void CMetaDataParserID3v22::GetTextYearL( |
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388 TInt aSize ) |
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389 { |
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390 #ifdef _DEBUG |
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391 RDebug::Print(_L("CMetaDataParserID3v22::GetTextYearL")); |
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392 #endif |
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393 GetTextInfoL( EMetaDataYear, aSize ); |
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394 } |
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395 |
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396 // ----------------------------------------------------------------------------- |
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397 // CMetaDataParserID3v22::GetCommentL |
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398 // ----------------------------------------------------------------------------- |
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399 // |
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400 void CMetaDataParserID3v22::GetCommentL( |
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401 TInt aSize ) |
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402 { |
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403 #ifdef _DEBUG |
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404 RDebug::Print(_L("CMetaDataParserID3v22::GetCommentL")); |
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405 #endif |
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406 HBufC8* frame = HBufC8::NewLC( aSize ); |
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407 TPtr8 des( frame->Des() ); |
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408 |
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409 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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410 |
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411 if ( des.Length() < aSize ) |
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412 { |
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413 // Partial frame |
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414 User::Leave( KErrCorrupt ); |
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415 } |
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416 |
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417 if(aSize <= 4) // emppty frame |
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418 { |
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419 CleanupStack::PopAndDestroy(); // frame |
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420 return; |
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421 } |
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422 TInt encoding = (TInt) (des.Left(1))[0]; |
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423 // Skip over TextEncoding(1 byte) and Language(3 bytes) |
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424 TPtr8 text = des.MidTPtr(4); |
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425 // Skip over Content description from Comment |
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426 TInt contentDesLength; |
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427 if(encoding == 0) |
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428 { |
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429 _LIT8(KNull, "\0"); |
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430 contentDesLength = text.Find(KNull); |
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431 text = text.MidTPtr(contentDesLength + 1); |
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432 } |
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433 else |
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434 { |
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435 _LIT8(KNull, "\0\0"); |
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436 contentDesLength = text.Find(KNull); |
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437 text = text.MidTPtr(contentDesLength + 2); |
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438 } |
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439 TPtrC8 info = StripTrailingZeroes( text, encoding); |
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440 TInt length = info.Length(); |
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441 if ( length ) |
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442 { |
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443 HBufC* data16 = HBufC::NewLC( length ); |
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444 TPtr unicode( data16->Des() ); |
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445 if ( ConvertToUnicodeL(encoding, info, unicode) == KErrNone ) |
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446 { |
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447 iContainer->AppendL( EMetaDataComment, unicode ); |
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448 } |
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449 CleanupStack::PopAndDestroy(); // data16 |
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450 } |
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451 |
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452 CleanupStack::PopAndDestroy(); // frame |
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453 } |
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454 |
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455 // ----------------------------------------------------------------------------- |
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456 // CMetaDataParserID3v22::GetUrlL |
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457 // ----------------------------------------------------------------------------- |
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458 // |
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459 void CMetaDataParserID3v22::GetUrlL( |
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460 TInt aSize ) |
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461 { |
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462 #ifdef _DEBUG |
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463 RDebug::Print(_L("CMetaDataParserID3v22::GetUrlL")); |
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464 #endif |
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465 HBufC8* frame = HBufC8::NewLC( aSize ); |
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466 TPtr8 des( frame->Des() ); |
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467 |
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468 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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469 |
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470 if ( des.Length() < aSize ) |
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471 { |
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472 // Partial frame |
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473 User::Leave( KErrCorrupt ); |
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474 } |
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475 |
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476 // Ignore information followed by termination $00 |
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477 TInt trueEnd( des.Locate(0) ); |
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478 if ( trueEnd == KErrNotFound ) |
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479 { |
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480 trueEnd = des.Length(); |
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481 } |
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482 |
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483 TPtrC8 info = des.Left( trueEnd ); |
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484 TInt length = info.Length(); |
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485 if ( length ) |
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486 { |
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487 HBufC* data16 = HBufC::NewLC( length ); |
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488 TPtr unicode( data16->Des() ); |
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489 unicode.Copy( info ); |
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490 iContainer->AppendL( EMetaDataUrl, unicode ); |
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491 CleanupStack::PopAndDestroy(); // data16 |
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492 } |
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493 |
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494 CleanupStack::PopAndDestroy(); // frame |
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495 } |
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496 |
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497 // ----------------------------------------------------------------------------- |
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498 // CMetaDataParserID3v22::GetJpegL |
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499 // ----------------------------------------------------------------------------- |
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500 // |
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501 void CMetaDataParserID3v22::GetJpegL( |
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502 TInt aSize ) |
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503 { |
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504 #ifdef _DEBUG |
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505 RDebug::Print(_L("CMetaDataParserID3v22::GetJpegL")); |
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506 #endif |
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507 HBufC8* frame = HBufC8::NewLC( aSize ); |
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508 TPtr8 des( frame->Des() ); |
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509 |
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510 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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511 |
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512 if ( des.Length() < aSize ) |
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513 { |
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514 // Partial frame |
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515 User::Leave( KErrCorrupt ); |
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516 } |
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517 |
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518 TInt encoding = (TInt) (des.Left(1))[0]; |
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519 |
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520 TPtrC8 imageFormat = des.Mid(1, 3); |
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521 if ( imageFormat.Compare( KID3v2ImageFormatJpeg ) != 0 && |
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522 imageFormat.Compare( KID3v2ImageFormatPng ) != 0 ) |
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523 { |
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524 CleanupStack::PopAndDestroy(); // frame |
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525 return; |
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526 } |
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527 |
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528 if(des.Length() < 5) |
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529 { |
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530 CleanupStack::PopAndDestroy(); // frame |
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531 return; |
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532 } |
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533 |
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534 TInt pictureType = (TInt) (des.Mid(4, 1))[0]; |
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535 if ( !NeedRetrieveAlbumArt(pictureType) ) |
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536 { |
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537 CleanupStack::PopAndDestroy(); // frame |
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538 return; |
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539 } |
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540 |
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541 TInt picOffset; |
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542 TPtrC8 text8 = des.Mid(5); |
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543 if ( encoding == KMetaDataParserAsciiEncoding ) |
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544 { |
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545 picOffset = text8.Locate(0); |
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546 if ( picOffset == KErrNotFound ) |
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547 { |
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548 CleanupStack::PopAndDestroy(); // frame |
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549 return; |
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550 } |
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551 |
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552 picOffset++; // Description termination mark ($00) |
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553 } |
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554 else if ( encoding == KMetaDataParserUnicodeEncoding ) |
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555 { |
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556 _LIT8(KNULL, "\0\0"); // 2 bytes of NULL |
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557 picOffset = text8.Find(KNULL); |
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558 if ( picOffset == KErrNotFound ) |
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559 { |
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560 CleanupStack::PopAndDestroy(); // frame |
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561 return; |
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562 } |
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563 if (picOffset % 2) // check for offset odd number |
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564 { |
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565 picOffset++; // add 1 for word boundary |
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566 } |
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567 picOffset += 2; // Description termination mark ($00 00) |
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568 } |
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569 else |
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570 { |
|
571 CleanupStack::PopAndDestroy(); // frame |
|
572 return; |
|
573 } |
|
574 TPtrC8 pic = des.Mid(picOffset + 5); |
|
575 TInt length = pic.Length(); |
|
576 if ( length ) |
|
577 { |
|
578 // save the offset and the size for retrieving the album art later |
|
579 iAlbumOffset = picOffset + 5; |
|
580 iAlbumType = pictureType; |
|
581 |
|
582 if (iAlbumPtr) |
|
583 { |
|
584 delete iAlbumPtr; // delete the previous buffer |
|
585 } |
|
586 |
|
587 CleanupStack::Pop(); // frame - pop from Cleanup stack |
|
588 iAlbumPtr = frame; // save the buffer |
|
589 } |
|
590 else |
|
591 { |
|
592 CleanupStack::PopAndDestroy(); // frame |
|
593 } |
|
594 } |
|
595 |
|
596 // ----------------------------------------------------------------------------- |
|
597 // CMetaDataParserID3v22::GetDurationL |
|
598 // ----------------------------------------------------------------------------- |
|
599 // |
|
600 void CMetaDataParserID3v22::GetDurationL( |
|
601 TInt aSize ) |
|
602 { |
|
603 #ifdef _DEBUG |
|
604 RDebug::Print(_L("CMetaDataParserID3v23::GetDurationL")); |
|
605 #endif |
|
606 HBufC8* frame = HBufC8::NewLC( aSize ); |
|
607 TPtr8 des( frame->Des() ); |
|
608 |
|
609 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
|
610 |
|
611 if ( des.Length() < aSize ) |
|
612 { |
|
613 // Partial frame |
|
614 User::Leave( KErrCorrupt ); |
|
615 } |
|
616 |
|
617 TInt encoding = (TInt) (des.Left(1))[0]; |
|
618 TPtrC8 info = StripTrailingZeroes( des.Mid(1), encoding ); // $00 |
|
619 TInt length = info.Length(); |
|
620 if ( length ) |
|
621 { |
|
622 TReal sec = (TReal) atoi((char*)info.Ptr()) / 1000; |
|
623 TBuf16<10> info1; |
|
624 info1.Num(sec, TRealFormat (9, 3)); |
|
625 iContainer->AppendL( EMetaDataDuration, info1 ); |
|
626 } |
|
627 |
|
628 CleanupStack::PopAndDestroy(); // frame |
|
629 } |
|
630 |
|
631 |
|
632 // ----------------------------------------------------------------------------- |
|
633 // CMetaDataParserID3v22::GetTextDateL |
|
634 // ----------------------------------------------------------------------------- |
|
635 // |
|
636 void CMetaDataParserID3v22::GetTextDateL( |
|
637 TInt aSize ) |
|
638 { |
|
639 #ifdef _DEBUG |
|
640 RDebug::Print(_L("CMetaDataParserID3v22::GetTextDateL")); |
|
641 #endif |
|
642 GetTextInfoL( EMetaDataDate, aSize ); |
|
643 } |
|
644 |
|
645 // ----------------------------------------------------------------------------- |
|
646 // CMetaDataParserID3v22::GetRatingL |
|
647 // ----------------------------------------------------------------------------- |
|
648 // |
|
649 void CMetaDataParserID3v22::GetRatingL( TInt aSize ) |
|
650 { |
|
651 #ifdef _DEBUG |
|
652 RDebug::Print(_L("CMetaDataParserID3v22::GetRatingL")); |
|
653 #endif |
|
654 HBufC8* frame = HBufC8::NewLC( aSize ); |
|
655 TPtr8 des( frame->Des() ); |
|
656 |
|
657 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
|
658 |
|
659 if ( des.Length() < aSize ) |
|
660 { |
|
661 // Partial frame |
|
662 User::Leave( KErrCorrupt ); |
|
663 } |
|
664 _LIT8(KNull, "\0"); |
|
665 TInt offset = des.Find(KNull); |
|
666 if(offset == KErrNotFound) |
|
667 { |
|
668 return; |
|
669 } |
|
670 TUint8 rating = des[offset + 1]; |
|
671 if ( rating > 0) |
|
672 { |
|
673 TBuf<8> data16; |
|
674 data16.AppendNum(rating); |
|
675 iContainer->AppendL( EMetaDataRating, data16 ); |
|
676 } |
|
677 CleanupStack::PopAndDestroy(); // frame |
|
678 } |
|
679 |
|
680 // ----------------------------------------------------------------------------- |
|
681 // CMetaDataParserID3v22::ConvertToUnicodeL |
|
682 // ----------------------------------------------------------------------------- |
|
683 // |
|
684 TInt CMetaDataParserID3v22::ConvertToUnicodeL( |
|
685 TInt aEncoding, |
|
686 const TDesC8& aDesc, |
|
687 TDes16& aUnicode ) |
|
688 { |
|
689 #ifdef _DEBUG |
|
690 RDebug::Print(_L("CMetaDataParserID3v22::ConvertToUnicodeL")); |
|
691 #endif |
|
692 TPtrC8 unicodeData; |
|
693 TUint characterSetId = 0; |
|
694 TInt err; |
|
695 |
|
696 CCnvCharacterSetConverter* charSetConv = CCnvCharacterSetConverter::NewLC(); |
|
697 TInt state = CCnvCharacterSetConverter::KStateDefault; |
|
698 |
|
699 if ( aEncoding == KMetaDataParserAsciiEncoding ) |
|
700 { |
|
701 if(iAutoDetectChinese || iAutoDetectRussian || iAutoDetectJapanese) |
|
702 { |
|
703 err = AutoDetectL(aDesc, aUnicode); |
|
704 CleanupStack::PopAndDestroy(); // charSetConv |
|
705 return err; |
|
706 } |
|
707 else |
|
708 { |
|
709 // ISO-8859-1 |
|
710 characterSetId = KCharacterSetIdentifierIso88591; |
|
711 unicodeData.Set( aDesc ); |
|
712 } |
|
713 } |
|
714 else if ( aEncoding == KMetaDataParserUnicodeEncoding ) |
|
715 { |
|
716 // USC-2 with BOM |
|
717 TInt bom = UnicodeBOM(aDesc); |
|
718 if ( bom == KUnicodeBOMBigEndian ) |
|
719 { |
|
720 //characterSetId = KCharacterSetIdentifierUcs2; |
|
721 characterSetId = KCharacterSetIdentifierUnicodeBig; |
|
722 // Skip BOM & Terminate marks |
|
723 unicodeData.Set( aDesc.Mid( 2, aDesc.Length() - 2 ) ); |
|
724 } |
|
725 else if ( bom == KUnicodeBOMLittleEndian ) |
|
726 { |
|
727 characterSetId = KCharacterSetIdentifierUnicodeLittle; |
|
728 // Skip BOM & Terminate marks |
|
729 unicodeData.Set( aDesc.Mid( 2, aDesc.Length() - 2 ) ); |
|
730 } |
|
731 else |
|
732 { |
|
733 // USC-2 Big Endian without BOM |
|
734 characterSetId = KCharacterSetIdentifierUnicodeBig; |
|
735 unicodeData.Set( aDesc ); |
|
736 } |
|
737 } |
|
738 else |
|
739 { |
|
740 User::Leave(KErrNotSupported); |
|
741 } |
|
742 |
|
743 charSetConv->PrepareToConvertToOrFromL(characterSetId, *iCharacterSet, iFs); |
|
744 err = charSetConv->ConvertToUnicode(aUnicode, unicodeData, state); |
|
745 |
|
746 #ifdef _DEBUG |
|
747 RDebug::Print(_L("CMetaDataParserID3v22::ConvertToUnicode :-> Tag Size[%d] Unicode Tag Size[%d]Bytes Unconverted[%d]"), |
|
748 unicodeData.Length(), aUnicode.Length(), err); |
|
749 #endif |
|
750 |
|
751 CleanupStack::PopAndDestroy(); // charSetConv |
|
752 return err; |
|
753 } |
|
754 |
|
755 // End of File |