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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 ID3v2.4 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 #include "MetaDataParserID3v24.h" |
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25 |
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26 // CONSTANTS |
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27 // (ID3v2.4 specification found in www.id3.org) |
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28 const TInt KID3v2HeaderLength = 10; |
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29 const TInt KID3v2ExtendedHeaderLength = 6; |
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30 const TInt KID3v2FrameHeaderLength = 10; |
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31 const TInt KID3v2FrameIdLength = 4; |
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32 const TInt KID3v2GenreNameLength = 24; |
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33 |
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34 _LIT8( KID3v2FrameIdTitle, "TIT2" ); |
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35 _LIT8( KID3v2FrameIdArtist, "TPE1" ); |
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36 _LIT8( KID3v2FrameIdAlbum, "TALB" ); |
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37 _LIT8( KID3v2FrameIdYear, "TDRC" ); |
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38 _LIT8( KID3v2FrameIdComment, "COMM" ); |
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39 _LIT8( KID3v2FrameIdTrack, "TRCK" ); |
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40 _LIT8( KID3v2FrameIdGenre, "TCON" ); |
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41 _LIT8( KID3v2FrameIdComposer, "TCOM" ); |
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42 _LIT8( KID3v2FrameIdCopyright, "TCOP" ); |
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43 _LIT8( KID3v2FrameIdOriginalArtist, "TOPE" ); |
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44 _LIT8( KID3v2FrameIdUrl, "WOAF" ); |
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45 _LIT8( KID3v2FrameIdUserUrl, "WXXX" ); |
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46 _LIT8( KID3v2FrameIdJpeg, "APIC" ); |
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47 _LIT8( KID3v2FrameIdDuration, "TLEN" ); |
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48 _LIT8( KID3v2FrameIdDate, "TDRC" ); // same as year |
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49 _LIT8( KID3v2FrameIdRating, "POPM" ); |
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50 |
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51 _LIT8( KID3v2ImageFormatPngMime, "image/png" ); |
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52 _LIT8( KID3v2ImageFormatPng, "png" ); |
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53 _LIT8( KID3v2ImageFormatJpegMime, "image/jpeg" ); |
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54 _LIT8( KID3v2ImageFormatJpgMime, "image/jpg" ); |
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55 _LIT8( KID3v2ImageFormatJpeg, "jpeg" ); |
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56 |
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57 |
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58 // ----------------------------------------------------------------------------- |
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59 // (ID3v2.4 specification found in www.id3.org) |
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60 // |
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61 // $00 ISO-8859-1 [ISO-8859-1]. Terminated with $00. |
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62 // $01 UTF-16 [UTF-16] encoded Unicode [UNICODE] with BOM. All |
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63 // strings in the same frame SHALL have the same byteorder. |
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64 // Terminated with $00 00. |
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65 // $02 UTF-16BE [UTF-16] encoded Unicode [UNICODE] without BOM. |
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66 // Terminated with $00 00. |
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67 // $03 UTF-8 [UTF-8] encoded Unicode [UNICODE]. Terminated with $00. |
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68 // ----------------------------------------------------------------------------- |
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69 const TInt KMetaDataParserAsciiEncoding = 0; |
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70 const TInt KMetaDataParserUnicodeEncoding = 1; |
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71 const TInt KMetaDataParserUnicodeBEEncoding = 2; |
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72 const TInt KMetaDataParserUnicode8Encoding = 3; |
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73 |
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74 // ============================ MEMBER FUNCTIONS =============================== |
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75 |
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76 // ----------------------------------------------------------------------------- |
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77 // CMetaDataParserID3v24::CMetaDataParserID3v24 |
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78 // C++ default constructor can NOT contain any code, that |
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79 // might leave. |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 CMetaDataParserID3v24::CMetaDataParserID3v24( |
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83 CMetaDataSource& aSource ) |
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84 : CMetaDataParserID3v2(aSource) |
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85 { |
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86 } |
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87 |
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88 // ----------------------------------------------------------------------------- |
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89 // CMetaDataParserID3v24::ConstructL |
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90 // Symbian 2nd phase constructor can leave. |
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91 // ----------------------------------------------------------------------------- |
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92 // |
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93 void CMetaDataParserID3v24::ConstructL() |
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94 { |
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95 User::LeaveIfError(iFs.Connect()); |
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96 iExists = ETrue; |
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97 #ifdef _DEBUG |
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98 RDebug::Print(_L("CMetaDataParserID3v24::ConstructL - Done")); |
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99 #endif |
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100 } |
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101 |
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102 // ----------------------------------------------------------------------------- |
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103 // CMetaDataParserID3v24::NewL |
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104 // Two-phased constructor. |
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105 // ----------------------------------------------------------------------------- |
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106 // |
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107 CMetaDataParserID3v24* CMetaDataParserID3v24::NewL( |
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108 CMetaDataSource& aSource ) |
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109 { |
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110 #ifdef _DEBUG |
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111 RDebug::Print(_L("CMetaDataParserID3v24::NewL")); |
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112 #endif |
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113 CMetaDataParserID3v24* self = new( ELeave ) CMetaDataParserID3v24( aSource ); |
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114 CleanupStack::PushL( self ); |
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115 self->ConstructL(); |
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116 CleanupStack::Pop(); |
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117 return self; |
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118 } |
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119 |
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120 // Destructor |
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121 CMetaDataParserID3v24::~CMetaDataParserID3v24() |
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122 { |
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123 iFs.Close(); |
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124 } |
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125 |
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126 // ----------------------------------------------------------------------------- |
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127 // CMetaDataParserID3v24::PrepareToParseL |
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128 // ----------------------------------------------------------------------------- |
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129 // |
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130 void CMetaDataParserID3v24::PrepareToParseL() |
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131 { |
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132 #ifdef _DEBUG |
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133 RDebug::Print(_L("CMetaDataParserID3v24::PrepareToParseL")); |
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134 #endif |
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135 // Most of validation was already done by builder. |
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136 TBuf8<KID3v2HeaderLength> header; |
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137 iSource->ReadL( 0, header ); |
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138 // ID3v2.4 header consists of following parts: |
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139 // File identifier "ID3" |
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140 // Version $04 00 |
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141 // Flags %abcd0000 |
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142 // Size 4 * %0xxxxxxx |
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143 |
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144 // Read the data length |
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145 iFrameDataSize = 0; |
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146 for ( TInt i = 6; i < 10; i++ ) |
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147 { |
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148 iFrameDataSize <<= 7; |
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149 iFrameDataSize |= header[i] & 0x7f; |
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150 } |
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151 |
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152 // Check if extended header is present; bit-b in Flags above |
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153 if ( header[5] & 0x40 ) |
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154 { |
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155 TBuf8<KID3v2ExtendedHeaderLength> extHeader; |
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156 iSource->ReadL( KID3v2HeaderLength, extHeader ); |
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157 // ID3v2.4 extended header consists of following parts: |
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158 // Extended header size 4 * %0xxxxxxx |
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159 // Extended flags $01 |
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160 // Size of padding $xx |
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161 |
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162 // Read the data length |
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163 TInt extHeaderSize = 0; |
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164 for ( TInt i = 0; i < 4; i++ ) |
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165 { |
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166 extHeaderSize <<= 7; |
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167 extHeaderSize |= extHeader[i] & 0x7f; |
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168 } |
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169 iFrameOffset = KID3v2HeaderLength + KID3v2ExtendedHeaderLength + extHeaderSize; |
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170 } |
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171 else |
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172 { |
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173 iFrameOffset = KID3v2HeaderLength; |
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174 } |
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175 |
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176 // iFrameDataSize is the entire size of ID3 tag including the header |
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177 iFrameDataSize += iFrameOffset; |
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178 } |
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179 |
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180 // ----------------------------------------------------------------------------- |
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181 // CMetaDataParserID3v24::GetNextFieldL |
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182 // ----------------------------------------------------------------------------- |
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183 // |
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184 void CMetaDataParserID3v24::GetNextFieldL( |
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185 TMetaDataFieldId& aFieldId, |
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186 TInt& aFrameHeaderSize, |
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187 TInt& aFrameSize ) |
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188 { |
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189 TBuf8<KID3v2FrameHeaderLength> frameHeader; |
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190 iSource->ReadL( iFrameOffset, frameHeader ); |
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191 // ID3v2.4 frame header consists of following parts: |
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192 // Frame identifier $xx xx xx xx |
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193 // Size 4 * %0xxxxxxx |
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194 // Flags $xx xx |
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195 |
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196 aFrameSize = 0; |
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197 |
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198 if(!frameHeader.Length()) |
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199 User::Leave(KErrCorrupt); |
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200 |
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201 for ( TInt i = 4; i < 8; i++ ) |
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202 { |
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203 aFrameSize <<= 7; |
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204 aFrameSize |= frameHeader[i] & 0x7f; |
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205 } |
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206 |
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207 aFrameHeaderSize = KID3v2FrameHeaderLength; |
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208 TPtrC8 frameId = frameHeader.Left( KID3v2FrameIdLength ); |
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209 _LIT8(KEMPTY, "\0\0\0\0"); |
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210 TBuf8<10> empty (KEMPTY); |
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211 if ( aFrameSize == 0 && frameId == empty) |
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212 { |
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213 // We have hit the padding -> no more fields to read |
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214 aFieldId = EUnknownMetaDataField; |
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215 aFrameHeaderSize = 0; |
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216 return; |
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217 } |
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218 else if (aFrameSize == 0) |
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219 { |
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220 aFieldId = EUnknownMetaDataField; |
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221 return; |
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222 } |
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223 |
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224 if ( frameId.Compare( KID3v2FrameIdTitle ) == 0 ) |
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225 { |
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226 aFieldId = EMetaDataSongTitle; |
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227 } |
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228 else if ( frameId.Compare( KID3v2FrameIdArtist ) == 0 ) |
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229 { |
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230 aFieldId = EMetaDataArtist; |
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231 } |
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232 else if ( frameId.Compare( KID3v2FrameIdAlbum ) == 0 ) |
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233 { |
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234 aFieldId = EMetaDataAlbum; |
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235 } |
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236 else if ( frameId.Compare( KID3v2FrameIdYear ) == 0 ) |
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237 { |
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238 aFieldId = EMetaDataYear; |
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239 } |
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240 else if ( frameId.Compare( KID3v2FrameIdComment ) == 0 ) |
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241 { |
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242 aFieldId = EMetaDataComment; |
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243 } |
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244 else if ( frameId.Compare( KID3v2FrameIdTrack ) == 0 ) |
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245 { |
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246 aFieldId = EMetaDataAlbumTrack; |
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247 } |
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248 else if ( frameId.Compare( KID3v2FrameIdGenre ) == 0 ) |
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249 { |
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250 aFieldId = EMetaDataGenre; |
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251 } |
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252 else if ( frameId.Compare( KID3v2FrameIdComposer ) == 0 ) |
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253 { |
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254 aFieldId = EMetaDataComposer; |
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255 } |
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256 else if ( frameId.Compare( KID3v2FrameIdCopyright ) == 0 ) |
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257 { |
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258 aFieldId = EMetaDataCopyright; |
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259 } |
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260 else if ( frameId.Compare( KID3v2FrameIdOriginalArtist ) == 0 ) |
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261 { |
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262 aFieldId = EMetaDataOriginalArtist; |
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263 } |
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264 else if ( frameId.Compare( KID3v2FrameIdUrl ) == 0 ) |
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265 { |
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266 aFieldId = EMetaDataUrl; |
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267 } |
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268 else if ( frameId.Compare( KID3v2FrameIdUserUrl ) == 0 ) |
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269 { |
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270 aFieldId = EMetaDataUserUrl; |
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271 } |
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272 else if ( frameId.Compare( KID3v2FrameIdJpeg ) == 0 ) |
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273 { |
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274 aFieldId = EMetaDataJpeg; |
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275 } |
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276 else if ( frameId.Compare( KID3v2FrameIdDuration ) == 0 ) |
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277 { |
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278 aFieldId = EMetaDataDuration; |
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279 } |
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280 else if ( frameId.Compare( KID3v2FrameIdDate ) == 0 ) |
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281 { |
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282 aFieldId = EMetaDataDate; |
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283 } |
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284 else if ( frameId.Compare( KID3v2FrameIdRating ) == 0 ) |
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285 { |
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286 aFieldId = EMetaDataRating; |
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287 } |
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288 else |
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289 { |
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290 aFieldId = EUnknownMetaDataField; |
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291 } |
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292 } |
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293 |
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294 // ----------------------------------------------------------------------------- |
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295 // CMetaDataParserID3v23::GetUserUrlL |
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296 // ----------------------------------------------------------------------------- |
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297 // |
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298 void CMetaDataParserID3v24::GetUserUrlL( |
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299 TInt aSize ) |
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300 { |
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301 #ifdef _DEBUG |
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302 RDebug::Print(_L("CMetaDataParserID3v23::GetUserUrlL")); |
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303 #endif |
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304 HBufC8* frame = HBufC8::NewLC( aSize ); |
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305 TPtr8 des( frame->Des() ); |
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306 |
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307 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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308 |
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309 if ( des.Length() < aSize ) |
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310 { |
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311 // Partial frame |
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312 User::Leave( KErrCorrupt ); |
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313 } |
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314 |
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315 TInt encoding = (TInt) (des.Left(1))[0]; |
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316 |
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317 if(encoding == 0x00) |
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318 { |
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319 _LIT8(KNULL, "\0"); |
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320 TInt descOffset = des.Find(KNULL); |
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321 if(descOffset + 2 > aSize) |
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322 { |
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323 CleanupStack::PopAndDestroy(); // frame |
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324 return; // empty frame |
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325 } |
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326 TPtrC8 info = des.Mid(descOffset + 2); |
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327 TInt length = info.Length(); |
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328 if ( length ) |
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329 { |
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330 HBufC* data16 = HBufC::NewLC( length ); |
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331 TPtr unicode( data16->Des() ); |
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332 unicode.Copy( info ); |
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333 iContainer->AppendL( EMetaDataUserUrl, unicode ); |
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334 CleanupStack::PopAndDestroy(); // data16 |
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335 } |
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336 } |
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337 else |
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338 { |
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339 _LIT8(KNULL, "\0\0"); |
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340 TInt descOffset = des.Find(KNULL); |
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341 if(descOffset + 3 > aSize) |
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342 { |
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343 CleanupStack::PopAndDestroy(); // frame |
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344 return; // empty frame |
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345 } |
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346 TPtrC8 info = des.Mid(descOffset + 3); |
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347 TInt length = info.Length(); |
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348 if ( length ) |
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349 { |
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350 HBufC* data16 = HBufC::NewLC( length ); |
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351 TPtr unicode( data16->Des() ); |
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352 unicode.Copy( info ); |
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353 iContainer->AppendL( EMetaDataUserUrl, unicode ); |
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354 CleanupStack::PopAndDestroy(); // data16 |
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355 } |
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356 } |
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357 |
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358 CleanupStack::PopAndDestroy(); // frame |
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359 } |
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360 |
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361 // ----------------------------------------------------------------------------- |
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362 // CMetaDataParserID3v24::GetTextInfoL |
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363 // ----------------------------------------------------------------------------- |
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364 // |
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365 void CMetaDataParserID3v24::GetTextInfoL( |
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366 TMetaDataFieldId aFieldId, |
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367 TInt aSize ) |
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368 { |
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369 HBufC8* frame = HBufC8::NewLC( aSize ); |
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370 TPtr8 des( frame->Des() ); |
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371 |
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372 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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373 |
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374 if ( des.Length() < aSize ) |
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375 { |
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376 // Partial frame |
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377 User::Leave( KErrCorrupt ); |
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378 } |
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379 |
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380 TInt encoding = (TInt) (des.Left(1))[0]; |
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381 TPtrC8 info = StripTrailingZeroes( des.Mid(1), encoding ); |
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382 TInt length = info.Length(); |
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383 if ( length ) |
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384 { |
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385 HBufC* data16 = HBufC::NewLC( length ); |
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386 TPtr unicode( data16->Des() ); |
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387 if ( ConvertToUnicodeL(encoding, info, unicode) == KErrNone ) |
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388 { |
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389 iContainer->AppendL( aFieldId, unicode ); |
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390 } |
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391 CleanupStack::PopAndDestroy(); // data16 |
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392 } |
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393 |
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394 CleanupStack::PopAndDestroy(); // frame |
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395 } |
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396 |
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397 // ----------------------------------------------------------------------------- |
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398 // CMetaDataParserID3v24::GetGenreL |
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399 // ----------------------------------------------------------------------------- |
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400 // |
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401 void CMetaDataParserID3v24::GetGenreL( |
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402 TInt aSize ) |
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403 { |
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404 #ifdef _DEBUG |
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405 RDebug::Print(_L("CMetaDataParserID3v24::GetGenreL")); |
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406 #endif |
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407 |
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408 HandleV2GetGenreL( aSize, KID3v2FrameHeaderLength, KID3v2GenreNameLength ); |
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409 } |
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410 // CMetaDataParserID3v24::GetTextYearL |
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411 // ----------------------------------------------------------------------------- |
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412 // |
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413 void CMetaDataParserID3v24::GetTextYearL( |
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414 TInt aSize ) |
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415 { |
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416 HBufC8* frame = HBufC8::NewLC( aSize ); |
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417 TPtr8 des( frame->Des() ); |
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418 |
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419 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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420 |
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421 if ( des.Length() < aSize ) |
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422 { |
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423 // Partial frame |
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424 User::Leave( KErrCorrupt ); |
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425 } |
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426 |
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427 TInt encoding = (TInt) (des.Left(1))[0]; |
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428 // Timestamp may be one of the following formats: |
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429 // yyyy, yyyy-MM, yyyy-MM-dd, yyyy-MM-ddTHH, yyyy-MM-ddTHH:mm and yyyy-MM-ddTHH:mm:ss |
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430 // We are only interested in year. |
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431 TPtrC8 drc = StripTrailingZeroes( des.Mid(1), encoding ); |
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432 TInt length = drc.Length(); |
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433 if ( length >= 4) // 4 bytes year |
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434 { |
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435 TPtrC8 info = drc.Mid(0, 4); |
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436 length = info.Length(); |
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437 HBufC* data16 = HBufC::NewLC( length ); |
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438 TPtr unicode( data16->Des() ); |
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439 if ( ConvertToUnicodeL(encoding, info, unicode) == KErrNone ) |
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440 { |
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441 iContainer->AppendL( EMetaDataYear, unicode ); |
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442 } |
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443 CleanupStack::PopAndDestroy(); // data16 |
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444 } |
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445 |
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446 CleanupStack::PopAndDestroy(); // frame |
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447 } |
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448 |
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449 // ----------------------------------------------------------------------------- |
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450 // CMetaDataParserID3v24::GetCommentL |
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451 // ----------------------------------------------------------------------------- |
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452 // |
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453 void CMetaDataParserID3v24::GetCommentL( |
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454 TInt aSize ) |
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455 { |
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456 HBufC8* frame = HBufC8::NewLC( aSize ); |
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457 TPtr8 des( frame->Des() ); |
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458 |
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459 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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460 |
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461 if ( des.Length() < aSize ) |
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462 { |
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463 // Partial frame |
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464 User::Leave( KErrCorrupt ); |
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465 } |
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466 |
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467 if(aSize <= 4) // emppty frame |
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468 { |
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469 CleanupStack::PopAndDestroy(); // frame |
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470 return; |
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471 } |
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472 TInt encoding = (TInt) (des.Left(1))[0]; |
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473 // Skip over TextEncoding(1 byte) and Language(3 bytes) |
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474 TPtr8 text = des.MidTPtr(4); |
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475 // Skip over Content description from Comment |
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476 TInt contentDesLength; |
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477 if(encoding == 0 || encoding == 3) |
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478 { |
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479 _LIT8(KNull, "\0"); |
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480 contentDesLength = text.Find(KNull); |
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481 text = text.MidTPtr(contentDesLength + 1); |
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482 } |
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483 else |
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484 { |
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485 _LIT8(KNull, "\0\0"); |
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486 contentDesLength = text.Find(KNull); |
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487 text = text.MidTPtr(contentDesLength + 2); |
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488 } |
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489 TPtrC8 info = StripTrailingZeroes( text, encoding); |
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490 TInt length = info.Length(); |
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491 if ( length ) |
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492 { |
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493 HBufC* data16 = HBufC::NewLC( length ); |
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494 TPtr unicode( data16->Des() ); |
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495 if ( ConvertToUnicodeL(encoding, info, unicode) == KErrNone ) |
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496 { |
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497 iContainer->AppendL( EMetaDataComment, unicode ); |
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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 CleanupStack::PopAndDestroy(); // frame |
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503 } |
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504 |
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505 // ----------------------------------------------------------------------------- |
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506 // CMetaDataParserID3v24::GetUrlL |
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507 // ----------------------------------------------------------------------------- |
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508 // |
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509 void CMetaDataParserID3v24::GetUrlL( |
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510 TInt aSize ) |
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511 { |
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512 HBufC8* frame = HBufC8::NewLC( aSize ); |
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513 TPtr8 des( frame->Des() ); |
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514 |
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515 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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516 |
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517 if ( des.Length() < aSize ) |
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518 { |
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519 // Partial frame |
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520 User::Leave( KErrCorrupt ); |
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521 } |
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522 |
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523 // Ignore information followed by termination $00 |
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524 TInt trueEnd( des.Locate(0) ); |
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525 if ( trueEnd == KErrNotFound ) |
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526 { |
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527 trueEnd = des.Length(); |
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528 } |
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529 |
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530 TPtrC8 info = des.Left( trueEnd ); |
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531 TInt length = info.Length(); |
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532 if ( length ) |
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533 { |
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534 HBufC* data16 = HBufC::NewLC( length ); |
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535 TPtr unicode( data16->Des() ); |
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536 unicode.Copy( info ); |
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537 iContainer->AppendL( EMetaDataUrl, unicode ); |
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538 CleanupStack::PopAndDestroy(); // data16 |
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539 } |
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540 |
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541 CleanupStack::PopAndDestroy(); // frame |
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542 } |
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543 |
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544 // ----------------------------------------------------------------------------- |
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545 // CMetaDataParserID3v24::GetJpegL |
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546 // ----------------------------------------------------------------------------- |
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547 // |
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548 void CMetaDataParserID3v24::GetJpegL( |
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549 TInt aSize ) |
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550 { |
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551 HBufC8* frame = HBufC8::NewLC( aSize ); |
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552 TPtr8 des( frame->Des() ); |
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553 |
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554 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
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555 |
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556 if ( des.Length() < aSize ) |
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557 { |
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558 // Partial frame |
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559 User::Leave( KErrCorrupt ); |
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560 } |
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561 |
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562 TInt encoding = (TInt) (des.Left(1))[0]; |
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563 |
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564 TInt mimeLength = des.Mid(1).Locate(0); |
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565 if(mimeLength <= 0 ) |
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566 { |
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567 User::Leave(KErrCorrupt); |
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568 } |
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569 TPtrC8 mime = des.Mid(1, mimeLength); |
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570 |
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571 if ( ( mime.Compare( KID3v2ImageFormatJpeg ) != 0 ) && |
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572 ( mime.Compare( KID3v2ImageFormatJpegMime ) != 0 ) && |
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573 ( mime.Compare( KID3v2ImageFormatJpgMime ) != 0 ) && |
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574 ( mime.Compare( KID3v2ImageFormatPngMime ) != 0 ) && |
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575 ( mime.Compare( KID3v2ImageFormatPng ) != 0 ) |
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576 ) |
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577 { |
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578 CleanupStack::PopAndDestroy(); // frame |
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579 return; |
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580 } |
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581 |
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582 if(mimeLength+3 > des.Length()) |
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583 { |
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584 CleanupStack::PopAndDestroy(); // frame |
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585 return; |
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586 } |
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587 |
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588 TInt pictureType = (TInt) (des.Mid(mimeLength + 2, 1))[0]; |
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589 if ( !NeedRetrieveAlbumArt(pictureType) ) |
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590 { |
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591 CleanupStack::PopAndDestroy(); // frame |
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592 return; |
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593 } |
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594 |
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595 TInt picOffset; |
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596 TPtrC8 text8 = des.Mid(mimeLength + 3 ); |
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597 if ( encoding == KMetaDataParserAsciiEncoding ) |
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598 { |
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599 picOffset = text8.Locate(0); |
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600 if ( picOffset == KErrNotFound ) |
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601 { |
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602 CleanupStack::PopAndDestroy(); // frame |
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603 return; |
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604 } |
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605 |
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606 picOffset++; // Description termination mark ($00) |
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607 } |
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608 else if ( encoding == KMetaDataParserUnicodeEncoding ) |
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609 { |
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610 _LIT8(KNULL, "\0\0"); // 2 bytes of NULL |
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611 picOffset = text8.Find(KNULL); |
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612 if ( picOffset == KErrNotFound ) |
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613 { |
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614 CleanupStack::PopAndDestroy(); // frame |
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615 return; |
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616 } |
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617 if (picOffset % 2) // check for offset odd number |
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618 { |
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619 picOffset++; // add 1 for word boundary |
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620 } |
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621 picOffset += 2; // Description termination mark ($00 00) |
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622 } |
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623 else |
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624 { |
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625 CleanupStack::PopAndDestroy(); // frame |
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626 return; |
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627 } |
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628 |
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629 TPtrC8 pic = des.Mid(picOffset + mimeLength + 3); |
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630 TInt length = pic.Length(); |
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631 if ( length ) |
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632 { |
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633 // save the offset and the size for retrieving the album art later |
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634 iAlbumOffset = picOffset + mimeLength + 3; |
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635 iAlbumType = pictureType; |
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636 |
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637 if (iAlbumPtr) |
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638 { |
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639 delete iAlbumPtr; // delete the previous buffer |
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640 } |
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641 CleanupStack::Pop(); // frame - pop from Cleanup stack |
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642 iAlbumPtr = frame; // save the buffer |
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643 } |
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644 else |
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645 { |
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646 CleanupStack::PopAndDestroy(); // frame |
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647 } |
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648 } |
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649 |
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650 // ----------------------------------------------------------------------------- |
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651 // CMetaDataParserID3v24::GetDurationL |
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652 // ----------------------------------------------------------------------------- |
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653 // |
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654 void CMetaDataParserID3v24::GetDurationL( |
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655 TInt aSize ) |
|
656 { |
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657 #ifdef _DEBUG |
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658 RDebug::Print(_L("CMetaDataParserID3v23::GetDurationL")); |
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659 #endif |
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660 HBufC8* frame = HBufC8::NewLC( aSize ); |
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661 TPtr8 des( frame->Des() ); |
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662 |
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663 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
|
664 |
|
665 if ( des.Length() < aSize ) |
|
666 { |
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667 // Partial frame |
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668 User::Leave( KErrCorrupt ); |
|
669 } |
|
670 |
|
671 TInt encoding = (TInt) (des.Left(1))[0]; |
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672 TPtrC8 info = StripTrailingZeroes( des.Mid(1), encoding ); // $00 |
|
673 TInt length = info.Length(); |
|
674 if ( length ) |
|
675 { |
|
676 TReal sec = (TReal) atoi((char*)info.Ptr()) / 1000; |
|
677 TBuf16<10> info1; |
|
678 info1.Num(sec, TRealFormat (9, 3)); |
|
679 iContainer->AppendL( EMetaDataDuration, info1 ); |
|
680 } |
|
681 |
|
682 CleanupStack::PopAndDestroy(); // frame |
|
683 } |
|
684 |
|
685 |
|
686 |
|
687 // ----------------------------------------------------------------------------- |
|
688 // CMetaDataParserID3v24::GetTextDateL |
|
689 // ----------------------------------------------------------------------------- |
|
690 // |
|
691 void CMetaDataParserID3v24::GetTextDateL( |
|
692 TInt aSize ) |
|
693 { |
|
694 #ifdef _DEBUG |
|
695 RDebug::Print(_L("CMetaDataParserID3v24::GetTextDateL")); |
|
696 #endif |
|
697 GetTextInfoL( EMetaDataDate, aSize ); |
|
698 } |
|
699 |
|
700 // ----------------------------------------------------------------------------- |
|
701 // CMetaDataParserID3v24::GetRatingL |
|
702 // ----------------------------------------------------------------------------- |
|
703 // |
|
704 void CMetaDataParserID3v24::GetRatingL( TInt aSize ) |
|
705 { |
|
706 #ifdef _DEBUG |
|
707 RDebug::Print(_L("CMetaDataParserID3v24::GetRatingL")); |
|
708 #endif |
|
709 HBufC8* frame = HBufC8::NewLC( aSize ); |
|
710 TPtr8 des( frame->Des() ); |
|
711 |
|
712 iSource->ReadL( iFrameOffset + KID3v2FrameHeaderLength, des, aSize ); |
|
713 |
|
714 if ( des.Length() < aSize ) |
|
715 { |
|
716 // Partial frame |
|
717 User::Leave( KErrCorrupt ); |
|
718 } |
|
719 _LIT8(KNull, "\0"); |
|
720 TInt offset = des.Find(KNull); |
|
721 if(offset == KErrNotFound) |
|
722 { |
|
723 CleanupStack::PopAndDestroy(); |
|
724 return; |
|
725 } |
|
726 TUint8 rating = des[offset]; |
|
727 if ( rating > 0) |
|
728 { |
|
729 TBuf<8> data16; |
|
730 data16.AppendNum(rating); |
|
731 iContainer->AppendL( EMetaDataRating, data16 ); |
|
732 } |
|
733 CleanupStack::PopAndDestroy(); // frame |
|
734 } |
|
735 |
|
736 // ----------------------------------------------------------------------------- |
|
737 // CMetaDataParserID3v24::ConvertToUnicodeL |
|
738 // ----------------------------------------------------------------------------- |
|
739 // |
|
740 TInt CMetaDataParserID3v24::ConvertToUnicodeL( |
|
741 TInt aEncoding, |
|
742 const TDesC8& aDesc, |
|
743 TDes16& aUnicode ) |
|
744 { |
|
745 #ifdef _DEBUG |
|
746 RDebug::Print(_L("CMetaDataParserID3v23::ConvertToUnicodeL")); |
|
747 #endif |
|
748 TPtrC8 unicodeData; |
|
749 TUint characterSetId = 0; |
|
750 TInt err; |
|
751 |
|
752 CCnvCharacterSetConverter* charSetConv = CCnvCharacterSetConverter::NewLC(); |
|
753 TInt state = CCnvCharacterSetConverter::KStateDefault; |
|
754 |
|
755 if ( aEncoding == KMetaDataParserAsciiEncoding ) |
|
756 { |
|
757 if(iAutoDetectChinese || iAutoDetectRussian || iAutoDetectJapanese) |
|
758 { |
|
759 err = AutoDetectL(aDesc, aUnicode); |
|
760 CleanupStack::PopAndDestroy(); // charSetConv |
|
761 return err; |
|
762 } |
|
763 else |
|
764 { |
|
765 // ISO-8859-1 |
|
766 characterSetId = KCharacterSetIdentifierIso88591; |
|
767 unicodeData.Set( aDesc ); |
|
768 } |
|
769 } |
|
770 else if ( aEncoding == KMetaDataParserUnicodeEncoding ) |
|
771 { |
|
772 // UTF-16 Big Endian with BOM |
|
773 TInt bom = UnicodeBOM(aDesc); |
|
774 if ( bom == KUnicodeBOMBigEndian ) |
|
775 { |
|
776 //characterSetId = KCharacterSetIdentifierUcs2; |
|
777 characterSetId = KCharacterSetIdentifierUnicodeBig; |
|
778 // Skip BOM & Terminate marks |
|
779 unicodeData.Set( aDesc.Mid( 2, aDesc.Length() - 2 ) ); |
|
780 } |
|
781 else if ( bom == KUnicodeBOMLittleEndian ) |
|
782 { |
|
783 characterSetId = KCharacterSetIdentifierUnicodeLittle; |
|
784 // Skip BOM & Terminate marks |
|
785 unicodeData.Set( aDesc.Mid( 2, aDesc.Length() - 2 ) ); |
|
786 } |
|
787 else |
|
788 { |
|
789 // UTF-16 Big Endian without BOM |
|
790 characterSetId = KCharacterSetIdentifierUnicodeBig; |
|
791 unicodeData.Set( aDesc ); |
|
792 } |
|
793 } |
|
794 else if ( aEncoding == KMetaDataParserUnicodeBEEncoding ) |
|
795 { |
|
796 // UTF-16 Big Endian without BOM |
|
797 characterSetId = KCharacterSetIdentifierUnicodeBig; |
|
798 unicodeData.Set( aDesc ); |
|
799 } |
|
800 else if ( aEncoding == KMetaDataParserUnicode8Encoding ) |
|
801 { |
|
802 // UTF-8 |
|
803 characterSetId = KCharacterSetIdentifierUtf8; |
|
804 unicodeData.Set( aDesc ); |
|
805 } |
|
806 else |
|
807 { |
|
808 User::Leave(KErrNotSupported); |
|
809 } |
|
810 |
|
811 charSetConv->PrepareToConvertToOrFromL(characterSetId, *iCharacterSet, iFs); |
|
812 err = charSetConv->ConvertToUnicode(aUnicode, unicodeData, state); |
|
813 |
|
814 #ifdef _DEBUG |
|
815 RDebug::Print(_L("CMetaDataParserID3v24::ConvertToUnicode :-> Tag Size[%d] Unicode Tag Size[%d]Bytes Unconverted[%d]"), |
|
816 unicodeData.Length(), aUnicode.Length(), err); |
|
817 #endif |
|
818 |
|
819 CleanupStack::PopAndDestroy(); // charSetConv |
|
820 return err; |
|
821 } |
|
822 |
|
823 // End of File |