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1 /* |
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2 * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: This class implements an MP4 metadata parser |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include "MetaDataParserMP4.h" |
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22 #ifdef _DEBUG |
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23 #include <e32svr.h> |
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24 #endif |
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25 |
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26 const TUint KCustomFileBufferSize = 10*1024; |
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27 |
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28 // ============================ MEMBER FUNCTIONS =============================== |
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29 |
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30 // ----------------------------------------------------------------------------- |
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31 // CMetaDataParserMP4::CMetaDataParserMP4 |
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32 // C++ default constructor can NOT contain any code, that |
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33 // might leave. |
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34 // ----------------------------------------------------------------------------- |
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35 // |
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36 CMetaDataParserMP4::CMetaDataParserMP4() |
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37 : iMP4Handle(NULL) |
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38 { |
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39 } |
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40 |
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41 // Destructor |
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42 CMetaDataParserMP4::~CMetaDataParserMP4() |
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43 { |
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44 MP4ParseClose(iMP4Handle); |
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45 if ( iExists ) |
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46 { |
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47 delete iCharacterSet; |
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48 iFs.Close(); |
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49 } |
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50 } |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // CMetaDataParserMP4::InitializeFileL |
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54 // Symbian 2nd phase constructor can leave. |
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55 // ----------------------------------------------------------------------------- |
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56 // |
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57 void CMetaDataParserMP4::InitializeFileL( |
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58 ContentAccess::CData *aData ) |
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59 { |
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60 MP4Err err; |
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61 //TBuf<256> name(aFileName); |
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62 err = MP4ParseOpenCAF(&iMP4Handle, aData); |
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63 #ifdef _DEBUG |
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64 RDebug::Print(_L("CMetaDataParserMP4::InitializeFileL - MP4ParseOpen err = %d"), err); |
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65 #endif |
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66 User::LeaveIfError(TranslateMP4Err(err)); |
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67 MP4SetCustomFileBufferSizes( iMP4Handle, 0, 0, KCustomFileBufferSize); |
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68 if ( ValidateL() ) |
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69 { |
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70 User::LeaveIfError(iFs.Connect()); |
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71 // Get list of charconv supported character sets |
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72 iCharacterSet = CCnvCharacterSetConverter::CreateArrayOfCharacterSetsAvailableL(iFs); |
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73 } |
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74 #ifdef _DEBUG |
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75 RDebug::Print(_L("CMetaDataParserMP4::InitializeFileL - Done")); |
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76 #endif |
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77 } |
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78 |
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79 // ----------------------------------------------------------------------------- |
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80 // CMetaDataParserMP4::InitializeDesL |
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81 // Symbian 2nd phase constructor can leave. |
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82 // ----------------------------------------------------------------------------- |
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83 // |
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84 void CMetaDataParserMP4::InitializeDesL( |
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85 const TDesC8& aDes ) |
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86 { |
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87 MP4Err err; |
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88 err = MP4ParseOpen(&iMP4Handle, NULL); |
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89 #ifdef _DEBUG |
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90 RDebug::Print(_L("CMetaDataParserMP4::InitializeDesL - MP4ParseOpen err = %d"), err); |
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91 #endif |
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92 User::LeaveIfError(TranslateMP4Err(err)); |
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93 |
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94 TUint8* buffer = CONST_CAST(TUint8*, aDes.Ptr()); |
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95 err = MP4ParseWriteData(iMP4Handle, buffer, aDes.Size()); |
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96 User::LeaveIfError(TranslateMP4Err(err)); |
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97 |
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98 // This call with empty buffer indicates to the MP4 library that this is the last buffer. |
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99 err = MP4ParseWriteData(iMP4Handle, NULL, 0); |
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100 User::LeaveIfError(TranslateMP4Err(err)); |
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101 |
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102 if ( ValidateL() ) |
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103 { |
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104 User::LeaveIfError(iFs.Connect()); |
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105 // Get list of charconv supported character sets |
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106 iCharacterSet = CCnvCharacterSetConverter::CreateArrayOfCharacterSetsAvailableL(iFs); |
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107 } |
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108 #ifdef _DEBUG |
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109 RDebug::Print(_L("CMetaDataParserMP4::InitializeDesL - Done")); |
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110 #endif |
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111 } |
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112 |
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113 |
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114 // ----------------------------------------------------------------------------- |
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115 // CMetaDataParserMP4::TranslateMP4Err |
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116 // ----------------------------------------------------------------------------- |
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117 // |
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118 TInt CMetaDataParserMP4::TranslateMP4Err( |
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119 MP4Err aError ) |
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120 { |
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121 #ifdef _DEBUG |
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122 RDebug::Print(_L("CMetaDataParserMP4::TranslateMP4Err [%d]"), aError); |
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123 #endif |
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124 TInt err; |
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125 switch ( aError ) |
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126 { |
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127 case MP4_OK: |
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128 err = KErrNone; |
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129 break; |
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130 case MP4_OUT_OF_MEMORY: |
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131 err = KErrNoMemory; |
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132 break; |
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133 case MP4_NOT_AVAILABLE: |
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134 case MP4_UDTA_NOT_FOUND: |
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135 err = KErrNotReady; |
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136 break; |
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137 case MP4_FILE_ERROR: |
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138 err = KErrBadHandle; |
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139 break; |
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140 case MP4_INVALID_TYPE: |
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141 err = KErrNotSupported; |
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142 break; |
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143 case MP4_TIMESCALE_NOT_SET: |
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144 err = KErrNotReady; |
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145 break; |
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146 case MP4_NOT_STREAMABLE: |
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147 case MP4_NO_REQUESTED_FRAME: |
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148 case MP4_CANT_SEEK: |
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149 case MP4_INVALID_INPUT_STREAM: |
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150 case MP4_NO_FRAME: |
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151 err = KErrArgument; |
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152 break; |
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153 case MP4_ERROR: |
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154 case MP4_FILE_MODE: |
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155 case MP4_BUFFER_TOO_SMALL: |
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156 case MP4_END_OF_VIDEO: |
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157 case MP4_METADATA_ERROR: |
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158 case MP4_NO_VIDEO: |
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159 case MP4_NO_AUDIO: |
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160 err = KErrGeneral; |
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161 break; |
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162 default: |
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163 err = KErrGeneral; |
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164 break; |
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165 } |
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166 return err; |
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167 } |
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168 |
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169 // ----------------------------------------------------------------------------- |
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170 // CMetaDataParserMP4::GetDurationL |
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171 // ----------------------------------------------------------------------------- |
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172 // |
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173 void CMetaDataParserMP4::GetDurationL( |
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174 TMetaDataFieldId aFieldId ) |
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175 { |
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176 #ifdef _DEBUG |
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177 RDebug::Print(_L("CMetaDataParser3gp::GetDurationL")); |
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178 #endif |
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179 MP4Err err; |
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180 mp4_u32 audiolength = 0; |
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181 mp4_u32 audiotype = 0; |
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182 mp4_u8 framespersample = 0; |
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183 mp4_u32 timescale = 0; |
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184 mp4_u32 averagebitrate = 0; |
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185 err = MP4ParseRequestAudioDescription(iMP4Handle, &audiolength, &audiotype, &framespersample, ×cale, &averagebitrate); |
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186 if(err == MP4_OK) |
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187 { |
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188 TBuf16<10> data16; |
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189 TReal duration = (TReal)audiolength / 1000; // seconds |
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190 TRealFormat realFormat(9, 3); |
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191 data16.AppendNum(duration, realFormat); |
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192 iContainer->AppendL( aFieldId, data16); |
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193 } |
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194 } |
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195 |
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196 |
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197 // ----------------------------------------------------------------------------- |
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198 // CMetaDataParserMP4::ConvertToUnicodeL |
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199 // ----------------------------------------------------------------------------- |
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200 // |
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201 TInt CMetaDataParserMP4::ConvertToUnicodeL( |
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202 const TDesC8& aDesc, |
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203 TDes16& aUnicode ) |
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204 { |
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205 TPtrC8 unicodeData; |
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206 TUint characterSetId = 0; |
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207 CCnvCharacterSetConverter* charSetConv = CCnvCharacterSetConverter::NewLC(); |
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208 TInt state = CCnvCharacterSetConverter::KStateDefault; |
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209 |
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210 TInt bom = UnicodeBOM(aDesc); |
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211 if ( bom == KUnicodeBOMBigEndian ) |
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212 { |
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213 // UTF-16 Big Endian with BOM |
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214 // characterSetId = KCharacterSetIdentifierUcs2; |
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215 TPtrC8 text = StripTrailingZeroes(aDesc, 1); |
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216 characterSetId = KCharacterSetIdentifierUnicodeBig; |
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217 // Skip BOM & Terminate marks |
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218 unicodeData.Set( text.Mid(2) ); |
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219 } |
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220 else if ( bom == KUnicodeBOMLittleEndian ) |
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221 { |
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222 // UTF-16 Big Endian with BOM |
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223 characterSetId = KCharacterSetIdentifierUnicodeLittle; |
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224 TPtrC8 text = StripTrailingZeroes(aDesc, 1); |
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225 // Skip BOM & Terminate marks |
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226 unicodeData.Set( text.Mid( 2) ); |
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227 } |
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228 else // KUnicodeBOMNotFound |
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229 { |
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230 // UTF-8 |
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231 TPtrC8 text = StripTrailingZeroes(aDesc, 0); |
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232 characterSetId = KCharacterSetIdentifierUtf8; |
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233 unicodeData.Set( text ); |
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234 } |
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235 |
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236 charSetConv->PrepareToConvertToOrFromL(characterSetId, *iCharacterSet, iFs); |
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237 TInt err = charSetConv->ConvertToUnicode(aUnicode, unicodeData, state); |
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238 |
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239 #ifdef _DEBUG |
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240 RDebug::Print(_L("CMetaDataParserID3v24::ConvertToUnicode :-> Tag Size[%d] Unicode Tag Size[%d]Bytes Unconverted[%d]"), |
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241 unicodeData.Length(), aUnicode.Length(), err); |
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242 #endif |
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243 |
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244 CleanupStack::PopAndDestroy(); // charSetConv |
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245 return err; |
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246 } |
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247 |
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248 // End of File |