1 /* |
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2 * Copyright (c) 2004-2006 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: Serialization functions for CSIGrammar and CSILexicon |
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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 // INCLUDE FILES |
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20 #include "nsssidataserialize.h" |
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21 #include <s32mem.h> // RBuf[Read/Write]Stream |
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22 |
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23 // LOCAL CONSTANTS AND MACROS |
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24 const TUint32 KNibble16Limit = 0xffff; |
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25 const TUint32 KNibble4Limit = 0xf; |
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26 |
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27 // LOCAL FUNCTION PROTOTYPES |
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28 void Externalize32bitArrayL( RWriteStream& aStream, RArray<TUint32>& aArray ); |
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29 void Internalize32bitArrayL( RReadStream& aStream, RArray<TUint32>& aArray ); |
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30 TInt IndexOrderForPhonemes( const TLexiconPhoneme& p1, const TLexiconPhoneme& p2 ); |
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31 TInt StringOrderForPhonemes( const TLexiconPhoneme& p1, const TLexiconPhoneme& p2 ); |
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32 |
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33 // ============================= LOCAL FUNCTIONS =============================== |
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34 |
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35 // ----------------------------------------------------------------------------- |
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36 // Externalize32bitArrayL |
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37 // Writes an RArray with 32-bit entries to the stream. |
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38 // Returns: None |
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39 // ----------------------------------------------------------------------------- |
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40 // |
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41 void Externalize32bitArrayL( |
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42 RWriteStream& aStream, // The stream where to store the array |
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43 RArray<TUint32>& aArray ) // The array; the entries must be 32-bit. |
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44 { |
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45 TInt count = aArray.Count(); |
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46 |
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47 aStream.WriteInt32L( count ); |
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48 |
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49 if ( count > 0 ) |
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50 { |
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51 TInt* startPtr = (TInt*)&aArray[0]; |
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52 aStream.WriteL( (TUint8*)startPtr, sizeof(TInt) * count ); |
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53 } |
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54 } |
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55 |
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56 // ----------------------------------------------------------------------------- |
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57 // Internalize32bitArrayL |
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58 // Reads an array from the stream. |
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59 // Returns: None |
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60 // ----------------------------------------------------------------------------- |
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61 // |
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62 void Internalize32bitArrayL( |
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63 RReadStream& aStream, // The stream to read from |
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64 RArray<TUint32>& aArray ) // The array to be populated |
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65 { |
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66 TInt count = aStream.ReadInt32L(); |
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67 TInt err = KErrNone; |
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68 |
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69 for ( TInt k( 0 ); k < count; k++ ) |
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70 { |
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71 TInt value = aStream.ReadInt32L(); |
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72 err |= aArray.Append( value ); |
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73 } |
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74 |
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75 User::LeaveIfError( err ); |
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76 } |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // IndexOrderForPhonemes |
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80 // |
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81 // ----------------------------------------------------------------------------- |
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82 // |
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83 TInt IndexOrderForPhonemes( const TLexiconPhoneme& p1, const TLexiconPhoneme& p2 ) |
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84 { |
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85 return( p1.iIndex - p2.iIndex ); |
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86 } |
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87 |
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88 // ----------------------------------------------------------------------------- |
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89 // StringOrderForPhonemes |
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90 // |
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91 // ----------------------------------------------------------------------------- |
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92 // |
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93 TInt StringOrderForPhonemes( const TLexiconPhoneme& p1, const TLexiconPhoneme& p2 ) |
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94 { |
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95 return( p1.iPhoneme.Compare( p2.iPhoneme ) ); |
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96 } |
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97 |
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98 |
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99 // ============================ MEMBER FUNCTIONS =============================== |
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100 |
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101 // ----------------------------------------------------------------------------- |
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102 // Implementation of CSILexiconSerializer starts from here. |
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103 // ----------------------------------------------------------------------------- |
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104 // |
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105 // ----------------------------------------------------------------------------- |
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106 // CSILexiconSerializer::CSILexiconSerializer |
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107 // C++ default constructor can NOT contain any code, that |
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108 // might leave. |
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109 // ----------------------------------------------------------------------------- |
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110 // |
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111 CSILexiconSerializer::CSILexiconSerializer() |
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112 { |
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113 iPronunIDs = NULL; |
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114 iModelBankIDs = NULL; |
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115 iParamBuf = NULL; |
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116 iCount = 0; |
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117 iLexiconID = 0; // !!!! Change to KInvalidLexiconID. |
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118 } |
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119 |
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120 // ----------------------------------------------------------------------------- |
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121 // CSILexiconSerializer::~CSILexiconSerializer |
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122 // Destructor. |
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123 // ----------------------------------------------------------------------------- |
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124 // |
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125 CSILexiconSerializer::~CSILexiconSerializer() |
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126 { |
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127 iPronunciations.ResetAndDestroy(); |
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128 iIndexPronuns.ResetAndDestroy(); |
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129 |
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130 iConversionTable.Close(); |
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131 |
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132 delete iPronunIDs; |
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133 delete iModelBankIDs; |
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134 delete iParamBuf; |
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135 } |
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136 |
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137 // ----------------------------------------------------------------------------- |
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138 // CSILexiconSerializer::NextPhonemeL |
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139 // Stores the next phoneme to phonemeBuf and increases the cursor. |
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140 // Returns true if there are still more phonemes. |
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141 // ----------------------------------------------------------------------------- |
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142 // |
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143 bool CSILexiconSerializer::NextPhonemeL( |
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144 TDes8& phonemeBuf, |
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145 const TDesC8& phonemeSeq, |
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146 TInt& aReadIterator ) |
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147 { |
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148 TInt length = phonemeSeq.Length(); |
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149 |
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150 // Out of phonemes? |
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151 if ( length == aReadIterator ) |
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152 { |
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153 return( false ); |
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154 } |
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155 |
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156 // Cut those phonemes away, which have been processed already. |
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157 TPtrC8 unfinishedPhonemes = phonemeSeq.Right( length - aReadIterator ); |
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158 |
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159 // Make SeparatorLoc point to the end of the next phoneme. |
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160 TInt separatorLoc = unfinishedPhonemes.Locate( KPhonemeSeparator ); |
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161 |
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162 // Phoneme length is from [start of unprocessed string] to [separator]... |
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163 TInt phonemeLength = separatorLoc; |
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164 |
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165 // ...unless we're dealing with the last phoneme. Then |
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166 // phonemeLength is from [start of unprocessed string] to [end of string]. |
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167 if ( separatorLoc == KErrNotFound ) |
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168 phonemeLength = length - aReadIterator; |
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169 |
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170 // Check that the phoneme is not too long. |
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171 if ( phonemeLength > KMaxPhonemeLength ) |
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172 { |
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173 User::Leave( KErrArgument ); |
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174 } |
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175 |
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176 if ( phonemeLength == 0 ) |
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177 { |
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178 return( false ); |
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179 } |
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180 |
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181 // Copy |
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182 phonemeBuf.Copy( unfinishedPhonemes.Ptr(), phonemeLength ); |
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183 |
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184 // Update iterator |
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185 aReadIterator += phonemeLength; // The phoneme |
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186 if ( aReadIterator < length ) // The separator |
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187 { |
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188 aReadIterator++; |
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189 } |
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190 |
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191 return( true ); |
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192 } |
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193 |
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194 // ----------------------------------------------------------------------------- |
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195 // CSILexiconSerializer::SavePronunciationL |
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196 // Converts the ASCII phoneme strings to internal index strings. |
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197 // ----------------------------------------------------------------------------- |
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198 // |
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199 void CSILexiconSerializer::SavePronunciationL(CSIPronunciation* aPronun) |
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200 { |
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201 TLinearOrder<TLexiconPhoneme> order( StringOrderForPhonemes ); |
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202 |
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203 // This phoneme is used for searching |
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204 TLexiconPhoneme searchPhoneme; |
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205 TDes8& phonemeBuf = searchPhoneme.iPhoneme; |
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206 |
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207 const TDesC8& phonemeSeq = aPronun->PhonemeSequence(); |
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208 |
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209 HBufC8* indexPronun = HBufC8::NewLC( phonemeSeq.Length() ); |
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210 |
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211 TInt phonemeReadIter = 0; |
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212 |
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213 while( NextPhonemeL( phonemeBuf, phonemeSeq, phonemeReadIter ) ) |
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214 { |
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215 // Search the phoneme from conversion table. |
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216 TInt loc = iConversionTable.FindInOrder( searchPhoneme, order ); |
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217 |
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218 // Not found? Add the phoneme as a new phoneme. |
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219 if ( loc == KErrNotFound ) |
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220 { |
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221 searchPhoneme.iIndex = iConversionTable.Count(); |
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222 User::LeaveIfError( |
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223 iConversionTable.InsertInOrder( searchPhoneme, order ) |
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224 ); |
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225 |
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226 // Can't fail: the phoneme has just been added. |
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227 loc = iConversionTable.FindInOrder( searchPhoneme, order ); |
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228 |
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229 // Make sure that phoneme count fits in TUint8 |
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230 if ( searchPhoneme.iIndex >= 250 ) |
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231 { |
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232 User::Leave( KErrOverflow ); |
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233 } |
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234 } |
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235 |
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236 // Phoneme to index |
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237 // Case to TUint8 is safe - Checked 10 lines earlier. |
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238 TUint8 index = (TUint8)iConversionTable[ loc ].iIndex; |
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239 indexPronun->Des().Append( index ); |
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240 } |
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241 |
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242 // Add pronunciation to the list of "index-pronunciations" |
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243 User::LeaveIfError( iIndexPronuns.Append( indexPronun ) ); |
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244 CleanupStack::Pop( indexPronun ); |
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245 } |
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246 |
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247 // ----------------------------------------------------------------------------- |
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248 // CSILexiconSerializer::Index2PhonemeLC |
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249 // Restores an internal index string into ASCII phonemes. |
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250 // ----------------------------------------------------------------------------- |
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251 // |
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252 HBufC8* CSILexiconSerializer::Index2PhonemeLC(const TDesC8& aIndexSeq) |
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253 { |
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254 TLinearOrder<TLexiconPhoneme> order( IndexOrderForPhonemes ); |
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255 iConversionTable.Sort( order ); |
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256 |
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257 TInt length = 0; |
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258 |
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259 TInt k( 0 ); |
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260 for( k = 0; k < aIndexSeq.Length(); k++ ) |
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261 { |
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262 TInt index = aIndexSeq[ k ]; |
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263 length += iConversionTable[ index ].iPhoneme.Length(); |
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264 length++; // Separator ('-') |
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265 } |
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266 |
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267 HBufC8* buf = HBufC8::NewLC( length ); |
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268 TPtr8 ptr = buf->Des(); |
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269 |
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270 TInt lastK = aIndexSeq.Length() -1; // Index of the last character |
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271 |
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272 for( k = 0; k < aIndexSeq.Length(); k++ ) |
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273 { |
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274 TInt index = aIndexSeq[ k ]; |
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275 ptr.Append( iConversionTable[ index ].iPhoneme ); |
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276 |
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277 // Add separator, except for the last phoneme |
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278 if ( k != lastK ) |
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279 { |
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280 ptr.Append( KPhonemeSeparator ); |
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281 } |
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282 } |
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283 |
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284 return( buf ); |
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285 } |
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286 |
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287 // ----------------------------------------------------------------------------- |
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288 // CSILexiconSerializer::NewLC |
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289 // Two-phased constructor. |
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290 // ----------------------------------------------------------------------------- |
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291 // |
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292 CSILexiconSerializer* CSILexiconSerializer::NewLC( const CSILexicon& aLexicon ) |
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293 { |
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294 CSILexiconSerializer* me = new (ELeave) CSILexiconSerializer; |
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295 CleanupStack::PushL( me ); |
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296 |
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297 me->ConstructL( aLexicon ); |
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298 |
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299 return( me ); |
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300 } |
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301 |
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302 // ----------------------------------------------------------------------------- |
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303 // CSILexiconSerializer::NewLC |
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304 // Two-phased constructor. |
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305 // ----------------------------------------------------------------------------- |
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306 // |
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307 CSILexiconSerializer* CSILexiconSerializer::NewLC( RReadStream& aStream ) |
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308 { |
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309 CSILexiconSerializer* me = new (ELeave) CSILexiconSerializer; |
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310 CleanupStack::PushL( me ); |
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311 |
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312 me->InternalizeL( aStream ); |
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313 |
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314 return( me ); |
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315 } |
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316 |
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317 // ----------------------------------------------------------------------------- |
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318 // CSILexiconSerializer::ConstructL |
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319 // Symbian 2nd phase constructor can leave. |
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320 // ----------------------------------------------------------------------------- |
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321 // |
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322 void CSILexiconSerializer::ConstructL( const CSILexicon& aLexicon ) |
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323 { |
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324 iLexiconID = aLexicon.LexiconID(); |
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325 iCount = aLexicon.Count(); |
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326 |
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327 iParamBuf = CBufFlat::NewL( 100 ); // Grow in 100 byte doses |
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328 |
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329 RArray<TSIModelBankID> modelBankIDs; |
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330 RArray<TSIPronunciationID> pronunIDs; |
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331 |
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332 CleanupClosePushL( modelBankIDs ); |
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333 CleanupClosePushL( pronunIDs ); |
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334 |
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335 RBufWriteStream paramStream; |
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336 paramStream.Open( *iParamBuf ); |
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337 CleanupClosePushL( paramStream ); |
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338 |
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339 // In serialization format, the 5 types of data in pronunciations |
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340 // are put to 4 piles. Then, the common properties of the data is exploited. |
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341 for ( TInt k = 0; k < aLexicon.Count(); k++ ) |
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342 { |
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343 CSIPronunciation* pronun = &aLexicon.AtL( k ); |
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344 |
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345 // 4 types of pronunciation data |
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346 TInt err = KErrNone; |
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347 |
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348 // This is a hack to get the modelid aligned to 4-byte boundary, |
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349 // for some reason this does not happen in winscw build if |
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350 // TSIModelBankID is taken from stack. |
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351 TSIModelBankID* modelid = new (ELeave) TSIModelBankID; |
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352 *modelid = pronun->ModelBankID(); |
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353 |
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354 err |= modelBankIDs.Append( *modelid ); |
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355 |
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356 // Delete temporary modelid |
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357 delete modelid; |
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358 |
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359 err |= pronunIDs.Append( pronun->PronunciationID() ); |
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360 |
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361 User::LeaveIfError( err ); |
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362 |
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363 SavePronunciationL( pronun ); |
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364 |
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365 // Parameters |
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366 pronun->CSIParameters::ExternalizeL( paramStream ); |
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367 } |
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368 |
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369 // Code the piled values |
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370 // Casts are safe, as all variables are 32-bit (they are just called |
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371 // with many different names - int, unsigned long, unsigned int) |
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372 iPronunIDs = CNibble16Coder::NewL( pronunIDs ); |
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373 iModelBankIDs = CRLECoder::NewL( modelBankIDs ); |
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374 |
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375 CleanupStack::PopAndDestroy( ¶mStream ); |
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376 |
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377 CleanupStack::PopAndDestroy( 2 ); // Close the RArrays |
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378 } |
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379 |
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380 // ----------------------------------------------------------------------------- |
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381 // CSILexiconSerializer::ExternalizeL |
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382 // Stores the object to the stream. |
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383 // ----------------------------------------------------------------------------- |
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384 // |
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385 void CSILexiconSerializer::ExternalizeL( RWriteStream& aStream ) |
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386 { |
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387 aStream.WriteInt32L( KBinaryLexiconID ); |
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388 |
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389 aStream.WriteInt32L( iLexiconID ); |
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390 aStream.WriteInt32L( iCount ); |
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391 |
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392 // Write model bank IDs. |
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393 iModelBankIDs->ExternalizeL( aStream ); |
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394 // Write pronunciation IDs |
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395 iPronunIDs->ExternalizeL( aStream ); |
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396 |
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397 // Write pronunciations (converted from phonemes to indices) |
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398 aStream.WriteInt32L( iIndexPronuns.Count() ); |
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399 |
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400 TInt k( 0 ); |
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401 for ( k = 0; k < iIndexPronuns.Count(); k++ ) |
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402 { |
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403 HBufC8* pronun = iIndexPronuns[ k ]; |
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404 |
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405 // There is no fixed limit on the length of a phoneme sequence. |
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406 // It's not even guaranteed that the length fits in 32 bits, damnit! |
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407 if ( pronun->Length() > 64000 ) |
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408 { |
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409 User::Leave( KErrNotSupported ); |
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410 } |
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411 |
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412 aStream.WriteUint16L( pronun->Length() ); |
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413 aStream.WriteL( pronun->Ptr(), pronun->Length() ); |
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414 } |
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415 |
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416 // Write parameters |
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417 aStream.WriteInt32L( iParamBuf->Size() ); |
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418 aStream.WriteL( iParamBuf->Ptr(0) ); |
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419 |
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420 // Write phoneme<->index conversion table |
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421 aStream.WriteInt32L( iConversionTable.Count() ); |
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422 for ( k = 0; k < iConversionTable.Count(); k++ ) |
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423 { |
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424 aStream.WriteL( (TUint8*)&iConversionTable[k], |
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425 sizeof( TLexiconPhoneme ) ); |
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426 } |
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427 |
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428 // For corruption checking |
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429 aStream.WriteInt32L( KBinaryLexiconID ); |
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430 } |
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431 |
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432 // ----------------------------------------------------------------------------- |
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433 // CSILexiconSerializer::InternalizeL |
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434 // Restores the object from a stream |
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435 // ----------------------------------------------------------------------------- |
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436 // |
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437 void CSILexiconSerializer::InternalizeL(RReadStream& aStream) |
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438 { |
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439 if ( aStream.ReadInt32L() != KBinaryLexiconID ) |
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440 User::Leave( KErrArgument ); |
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441 |
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442 iLexiconID = (TSILexiconID)aStream.ReadUint32L(); |
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443 iCount = aStream.ReadInt32L(); |
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444 |
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445 // Read model bank IDs |
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446 iModelBankIDs = CRLECoder::NewL( aStream ); |
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447 // Read pronunciation IDs |
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448 iPronunIDs = CNibble16Coder::NewL( aStream ); |
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449 |
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450 // Read pronunciations (converted from phonemes to indices) |
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451 TInt indexCount = aStream.ReadInt32L(); |
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452 |
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453 if ( indexCount != iCount ) |
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454 { |
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455 User::Leave( KErrCorrupt ); |
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456 } |
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457 |
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458 TInt k( 0 ); |
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459 for ( k = 0; k < indexCount; k++ ) |
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460 { |
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461 HBufC8* pronun = 0; |
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462 |
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463 TUint16 length = aStream.ReadUint16L(); |
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464 pronun = HBufC8::NewLC( length ); |
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465 |
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466 TPtr8 pronunPtr = pronun->Des(); |
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467 aStream.ReadL( pronunPtr, length ); |
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468 |
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469 User::LeaveIfError( iIndexPronuns.Append( pronun ) ); |
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470 |
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471 CleanupStack::Pop( pronun ); |
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472 } |
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473 |
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474 // Read parameters |
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475 TInt size = aStream.ReadInt32L(); |
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476 iParamBuf = CBufFlat::NewL( size+4 ); |
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477 iParamBuf->ExpandL( 0, size ); |
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478 |
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479 TPtr8 paramBufPtr = iParamBuf->Ptr(0); |
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480 aStream.ReadL( paramBufPtr, size ); |
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481 |
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482 // Read phoneme<->index conversion table |
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483 TInt conversionCount = aStream.ReadInt32L(); |
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484 for ( k = 0; k < conversionCount; k++ ) |
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485 { |
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486 TLexiconPhoneme lexiconPhoneme; |
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487 |
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488 aStream.ReadL( (TUint8*)&lexiconPhoneme, |
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489 sizeof( TLexiconPhoneme ) ); |
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490 |
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491 User::LeaveIfError( iConversionTable.Append( lexiconPhoneme ) ); |
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492 } |
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493 |
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494 // For corruption checking |
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495 if ( aStream.ReadInt32L() != KBinaryLexiconID ) |
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496 { |
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497 User::Leave( KErrCorrupt ); |
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498 } |
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499 |
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500 } |
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501 |
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502 // ----------------------------------------------------------------------------- |
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503 // CSILexiconSerializer::RestoreL |
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504 // Populates CSILexicon with the newly internalized data. |
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505 // ----------------------------------------------------------------------------- |
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506 // |
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507 void CSILexiconSerializer::RestoreL( CSILexicon& aLexicon, TSILexiconID& aLexiconID ) |
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508 { |
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509 if ( aLexicon.Count() > 0 ) |
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510 { |
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511 User::Leave( KErrInUse ); |
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512 } |
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513 |
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514 TSIModelBankID modelBankID = 0; |
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515 TSIPronunciationID pronunID = 0; |
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516 |
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517 RBufReadStream paramStream; |
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518 paramStream.Open( *iParamBuf ); |
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519 CleanupClosePushL( paramStream ); |
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520 |
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521 iModelBankIDs->DecodeReset(); |
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522 iPronunIDs->DecodeReset(); |
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523 |
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524 TInt iterPronunPos = 0; |
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525 |
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526 for ( TInt pronunK = 0; pronunK < iCount; pronunK++ ) |
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527 { |
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528 modelBankID = iModelBankIDs->NextL(); |
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529 pronunID = iPronunIDs->NextL(); |
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530 |
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531 CSIPronunciation* pronun |
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532 = CSIPronunciation::NewLC( pronunID, modelBankID ); |
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533 |
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534 HBufC8* indexSequence = iIndexPronuns[ iterPronunPos ]; |
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535 iterPronunPos++; |
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536 |
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537 HBufC8* phonemeSequence = Index2PhonemeLC( *indexSequence ); |
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538 pronun->SetPhonemeSequenceL( *phonemeSequence ); |
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539 CleanupStack::PopAndDestroy( phonemeSequence ); |
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540 |
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541 pronun->CSIParameters::InternalizeL( paramStream ); |
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542 |
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543 aLexicon.AddL( pronun ); |
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544 CleanupStack::Pop( pronun ); |
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545 } |
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546 |
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547 CleanupStack::PopAndDestroy( ¶mStream ); |
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548 |
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549 // LexiconID can't be written to CSILexicon with public API. |
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550 aLexiconID = iLexiconID; |
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551 } |
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552 |
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553 |
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554 // ----------------------------------------------------------------------------- |
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555 // Implementation of CSIGrammarSerializer starts from here. |
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556 // ----------------------------------------------------------------------------- |
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557 // |
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558 // ----------------------------------------------------------------------------- |
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559 // CSIGrammarSerializer::CSIGrammarSerializer |
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560 // C++ default constructor can NOT contain any code, that |
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561 // might leave. |
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562 // ----------------------------------------------------------------------------- |
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563 // |
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564 CSIGrammarSerializer::CSIGrammarSerializer() |
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565 { |
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566 iGrammarID = KInvalidGrammarID; |
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567 iCount = 0; |
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568 iRuleIDs = NULL; |
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569 iRuleVariantCounts = NULL; |
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570 iRuleVariantIDs = NULL; |
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571 iRuleVariantLexiconIDs = NULL; |
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572 iRuleVariantLanguages = NULL; |
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573 iPronunIDSeqLengths = NULL; |
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574 iPronunIDSequences = NULL; |
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575 iParamBuf = NULL; |
|
576 } |
|
577 |
|
578 |
|
579 // ----------------------------------------------------------------------------- |
|
580 // CSIGrammarSerializer::~CSIGrammarSerializer |
|
581 // Destructor. |
|
582 // ----------------------------------------------------------------------------- |
|
583 // |
|
584 CSIGrammarSerializer::~CSIGrammarSerializer() |
|
585 { |
|
586 delete iRuleIDs; |
|
587 delete iRuleVariantCounts; |
|
588 delete iRuleVariantIDs; |
|
589 delete iRuleVariantLexiconIDs; |
|
590 delete iRuleVariantLanguages; |
|
591 delete iPronunIDSeqLengths; |
|
592 delete iPronunIDSequences; |
|
593 delete iParamBuf; |
|
594 } |
|
595 |
|
596 |
|
597 // ----------------------------------------------------------------------------- |
|
598 // CSIGrammarSerializer::NewLC |
|
599 // Two-phased constructor. |
|
600 // ----------------------------------------------------------------------------- |
|
601 // |
|
602 CSIGrammarSerializer* CSIGrammarSerializer::NewLC( const CSIGrammar& aGrammar ) |
|
603 { |
|
604 CSIGrammarSerializer* me = new (ELeave) CSIGrammarSerializer(); |
|
605 CleanupStack::PushL( me ); |
|
606 |
|
607 me->ConstructL( aGrammar ); |
|
608 |
|
609 return( me ); |
|
610 } |
|
611 |
|
612 // ----------------------------------------------------------------------------- |
|
613 // CSIGrammarSerializer::ConstructL |
|
614 // Symbian 2nd phase constructor can leave. |
|
615 // ----------------------------------------------------------------------------- |
|
616 // |
|
617 void CSIGrammarSerializer::ConstructL( const CSIGrammar& aGrammar ) |
|
618 { |
|
619 iParamBuf = CBufFlat::NewL( 100 ); // Grow in 100 byte doses |
|
620 RBufWriteStream paramStream; |
|
621 paramStream.Open( *iParamBuf ); |
|
622 CleanupClosePushL( paramStream ); // Cleanp stack: param stream |
|
623 |
|
624 RArray<TSIRuleID> ruleIDs; |
|
625 RArray<TUint32> ruleVariantCounts; |
|
626 RArray<TUint32> ruleVariantIDs; |
|
627 RArray<TSILexiconID> ruleVariantLexiconIDs; |
|
628 RArray<TUint32> ruleVariantLanguages; |
|
629 RArray<TUint32> pronunIDSeqLengths; |
|
630 RArray<TSIPronunciationID> pronunIDSequences; |
|
631 |
|
632 CleanupClosePushL( ruleIDs ); |
|
633 CleanupClosePushL( ruleVariantCounts ); |
|
634 CleanupClosePushL( ruleVariantIDs ); |
|
635 CleanupClosePushL( ruleVariantLexiconIDs ); |
|
636 CleanupClosePushL( ruleVariantLanguages ); |
|
637 CleanupClosePushL( pronunIDSeqLengths ); |
|
638 CleanupClosePushL( pronunIDSequences ); // Cleanup stack: param stream, 7 tmp arrays |
|
639 |
|
640 TInt err = KErrNone; |
|
641 |
|
642 // Pile the data according to type (8 types) |
|
643 for ( TInt ruleK( 0 ); ruleK < aGrammar.Count(); ruleK++ ) |
|
644 { |
|
645 CSIRule& rule = aGrammar.AtL( ruleK ); |
|
646 |
|
647 err |= ruleIDs.Append( rule.RuleID() ); |
|
648 err |= ruleVariantCounts.Append( rule.Count() ); |
|
649 |
|
650 for ( TInt variantK( 0 ); variantK < rule.Count(); variantK++ ) |
|
651 { |
|
652 CSIRuleVariant& variant = rule.AtL( variantK ); |
|
653 |
|
654 err |= ruleVariantIDs.Append( variant.RuleVariantID() ); |
|
655 |
|
656 // This is a hack to get the lexid aligned to 4-byte boundary, |
|
657 // for some reason this does not happen in winscw build if |
|
658 // TSILexiconID is taken from stack. |
|
659 TSILexiconID* lexid = new (ELeave) TSILexiconID; |
|
660 *lexid = variant.LexiconID(); |
|
661 |
|
662 err |= ruleVariantLexiconIDs.Append( *lexid ); |
|
663 |
|
664 delete lexid; |
|
665 |
|
666 err |= ruleVariantLanguages.Append( variant.Language() ); |
|
667 |
|
668 TSIPronunciationIDSequence seq; |
|
669 CleanupClosePushL( seq ); // Cleanup stack: param stream, 7 tmp arrays, seq |
|
670 |
|
671 variant.GetPronunciationIDsL( seq ); |
|
672 |
|
673 err |= pronunIDSeqLengths.Append( seq.Count() ); |
|
674 |
|
675 for ( TInt k( 0 ); k < seq.Count(); k++ ) |
|
676 { |
|
677 err |= pronunIDSequences.Append( seq[k] ); |
|
678 } |
|
679 |
|
680 CleanupStack::PopAndDestroy( &seq ); |
|
681 // Cleanup stack: param stream, 7 tmp arrays |
|
682 |
|
683 // Store parameters to a buffer. |
|
684 variant.ExternalizeL( paramStream ); |
|
685 } |
|
686 |
|
687 User::LeaveIfError( err ); |
|
688 } |
|
689 |
|
690 // Code the arrays |
|
691 iGrammarID = aGrammar.GrammarID(); |
|
692 iCount = aGrammar.Count(); |
|
693 |
|
694 iRuleIDs = CNibble16Coder::NewL( ruleIDs ); |
|
695 iRuleVariantCounts = CNibble4Coder::NewL( ruleVariantCounts ); |
|
696 iRuleVariantIDs = CNibble4Coder::NewL( ruleVariantIDs ); |
|
697 iRuleVariantLexiconIDs = CRLECoder::NewL( ruleVariantLexiconIDs ); |
|
698 // Cast is safe, since TLanguage is 32-bit |
|
699 iRuleVariantLanguages = CNibble4Coder::NewL( ruleVariantLanguages ); |
|
700 iPronunIDSeqLengths = CNibble4Coder::NewL( pronunIDSeqLengths ); |
|
701 iPronunIDSequences = CNibble16Coder::NewL( pronunIDSequences ); |
|
702 |
|
703 CleanupStack::PopAndDestroy( 7 ); // Destory 7 tmp arrays |
|
704 CleanupStack::PopAndDestroy( ¶mStream ); // Destroy parameter stream |
|
705 } |
|
706 |
|
707 // ----------------------------------------------------------------------------- |
|
708 // CSIGrammarSerializer::ExternalizeL |
|
709 // Stores the object to the stream. |
|
710 // ----------------------------------------------------------------------------- |
|
711 // |
|
712 void CSIGrammarSerializer::ExternalizeL( RWriteStream& aStream ) |
|
713 { |
|
714 aStream.WriteUint32L( ( TUint32 ) KBinaryGrammarID ); |
|
715 aStream.WriteUint32L( iGrammarID ); |
|
716 aStream.WriteUint32L( iCount ); |
|
717 |
|
718 iRuleIDs ->ExternalizeL( aStream ); |
|
719 iRuleVariantCounts ->ExternalizeL( aStream ); |
|
720 iRuleVariantIDs ->ExternalizeL( aStream ); |
|
721 iRuleVariantLexiconIDs->ExternalizeL( aStream ); |
|
722 iRuleVariantLanguages ->ExternalizeL( aStream ); |
|
723 iPronunIDSeqLengths ->ExternalizeL( aStream ); |
|
724 iPronunIDSequences ->ExternalizeL( aStream ); |
|
725 |
|
726 aStream.WriteInt32L( iParamBuf->Size() ); |
|
727 aStream.WriteL( iParamBuf->Ptr(0) ); |
|
728 |
|
729 aStream.WriteUint32L( ( TUint32 ) KBinaryGrammarID ); |
|
730 } |
|
731 |
|
732 // ----------------------------------------------------------------------------- |
|
733 // CSIGrammarSerializer::NewLC |
|
734 // Two-phased constructor. |
|
735 // ----------------------------------------------------------------------------- |
|
736 // |
|
737 CSIGrammarSerializer* CSIGrammarSerializer::NewLC(RReadStream& aStream) |
|
738 { |
|
739 CSIGrammarSerializer* me = new (ELeave) CSIGrammarSerializer(); |
|
740 CleanupStack::PushL( me ); |
|
741 |
|
742 me->ConstructL( aStream ); |
|
743 |
|
744 return( me ); |
|
745 } |
|
746 |
|
747 // ----------------------------------------------------------------------------- |
|
748 // CSIGrammarSerializer::ConstructL |
|
749 // Symbian 2nd phase constructor can leave. |
|
750 // ----------------------------------------------------------------------------- |
|
751 // |
|
752 void CSIGrammarSerializer::ConstructL( RReadStream& aStream ) |
|
753 { |
|
754 if ( aStream.ReadInt32L() != KBinaryGrammarID ) |
|
755 { |
|
756 User::Leave( KErrCorrupt ); |
|
757 } |
|
758 |
|
759 iGrammarID = (TSIGrammarID)aStream.ReadUint32L(); |
|
760 iCount = aStream.ReadUint32L(); |
|
761 |
|
762 iRuleIDs = CNibble16Coder::NewL( aStream ); |
|
763 iRuleVariantCounts = CNibble4Coder::NewL( aStream ); |
|
764 iRuleVariantIDs = CNibble4Coder::NewL( aStream ); |
|
765 iRuleVariantLexiconIDs= CRLECoder::NewL( aStream ); |
|
766 iRuleVariantLanguages = CNibble4Coder::NewL( aStream ); |
|
767 iPronunIDSeqLengths = CNibble4Coder::NewL( aStream ); |
|
768 iPronunIDSequences = CNibble16Coder::NewL( aStream ); |
|
769 |
|
770 TInt32 paramSize = aStream.ReadInt32L(); |
|
771 iParamBuf = CBufFlat::NewL( paramSize + 4 ); |
|
772 iParamBuf->ExpandL( 0, paramSize ); |
|
773 TPtr8 paramBufPtr = iParamBuf->Ptr(0); |
|
774 aStream.ReadL( paramBufPtr, paramSize ); |
|
775 |
|
776 if ( aStream.ReadInt32L() != KBinaryGrammarID ) |
|
777 { |
|
778 User::Leave( KErrCorrupt ); |
|
779 } |
|
780 } |
|
781 |
|
782 // ----------------------------------------------------------------------------- |
|
783 // CSIGrammarSerializer::RestoreL |
|
784 // Populates the CSIGrammar with newly internalized data. |
|
785 // ----------------------------------------------------------------------------- |
|
786 // |
|
787 void CSIGrammarSerializer::RestoreL( CSIGrammar& aGrammar, TSIGrammarID& aGrammarID ) |
|
788 { |
|
789 if ( aGrammar.Count() != 0 ) |
|
790 { |
|
791 User::Leave( KErrInUse ); |
|
792 } |
|
793 |
|
794 aGrammarID = iGrammarID; |
|
795 |
|
796 TBool ready = iRuleIDs && iRuleVariantCounts && iRuleVariantIDs && |
|
797 iRuleVariantLexiconIDs && iRuleVariantLanguages && |
|
798 iPronunIDSeqLengths && iPronunIDSequences; |
|
799 |
|
800 if ( !ready ) |
|
801 { |
|
802 User::Leave( KErrNotReady ); |
|
803 } |
|
804 |
|
805 iRuleIDs->DecodeReset(); |
|
806 iRuleVariantCounts->DecodeReset(); |
|
807 iRuleVariantIDs->DecodeReset(); |
|
808 iRuleVariantLexiconIDs->DecodeReset(); |
|
809 iRuleVariantLanguages->DecodeReset(); |
|
810 iPronunIDSeqLengths->DecodeReset(); |
|
811 iPronunIDSequences->DecodeReset(); |
|
812 |
|
813 RBufReadStream paramStream; |
|
814 CleanupClosePushL( paramStream ); |
|
815 |
|
816 paramStream.Open( *iParamBuf ); |
|
817 |
|
818 for ( TInt ruleK( 0 ); ruleK < iCount; ruleK++ ) |
|
819 { |
|
820 CSIRule* rule = CSIRule::NewLC( iRuleIDs->NextL() ); |
|
821 |
|
822 TInt ruleVariantCount = iRuleVariantCounts->NextL(); |
|
823 |
|
824 for ( TInt variantK( 0 ); variantK < ruleVariantCount; variantK++ ) |
|
825 { |
|
826 CSIRuleVariant* variant = CSIRuleVariant::NewLC( |
|
827 (TSIRuleVariantID)iRuleVariantIDs->NextL(), |
|
828 iRuleVariantLexiconIDs->NextL() |
|
829 ); |
|
830 |
|
831 variant->SetLanguage( |
|
832 (enum TLanguage)iRuleVariantLanguages->NextL() ); |
|
833 |
|
834 RArray<TSIPronunciationID> pronunIDSeq; |
|
835 CleanupClosePushL( pronunIDSeq ); |
|
836 |
|
837 TInt seqLength = iPronunIDSeqLengths->NextL(); |
|
838 for ( TInt pronunIdK( 0 ); pronunIdK < seqLength; pronunIdK++ ) |
|
839 { |
|
840 TInt err = pronunIDSeq.Append( iPronunIDSequences->NextL() ); |
|
841 User::LeaveIfError( err ); |
|
842 } |
|
843 |
|
844 variant->SetPronunciationIDsL( pronunIDSeq ); |
|
845 CleanupStack::PopAndDestroy( &pronunIDSeq ); |
|
846 |
|
847 variant->CSIParameters::InternalizeL( paramStream ); |
|
848 rule->AddL( variant ); |
|
849 CleanupStack::Pop( variant ); |
|
850 } |
|
851 |
|
852 aGrammar.AddL( rule ); |
|
853 CleanupStack::Pop( rule ); |
|
854 } |
|
855 |
|
856 CleanupStack::PopAndDestroy( ¶mStream ); |
|
857 } |
|
858 |
|
859 |
|
860 // ----------------------------------------------------------------------------- |
|
861 // Implementation of CNibble16Coder starts from here. |
|
862 // ----------------------------------------------------------------------------- |
|
863 // |
|
864 // ----------------------------------------------------------------------------- |
|
865 // CNibble16Coder::CNibble16Coder |
|
866 // C++ default constructor can NOT contain any code, that |
|
867 // might leave. |
|
868 // ----------------------------------------------------------------------------- |
|
869 // |
|
870 CNibble16Coder::CNibble16Coder() |
|
871 : iMainArray(50), |
|
872 iOverflowArray(10) |
|
873 { |
|
874 DecodeReset(); |
|
875 } |
|
876 |
|
877 // ----------------------------------------------------------------------------- |
|
878 // CNibble16Coder::NewL |
|
879 // Two-phased constructor. Encodes the values given as the argument. |
|
880 // ----------------------------------------------------------------------------- |
|
881 // |
|
882 CNibble16Coder* CNibble16Coder::NewL( const RArray<TUint32>& aPlainArray ) |
|
883 { |
|
884 CNibble16Coder* me = new (ELeave) CNibble16Coder; |
|
885 CleanupStack::PushL( me ); |
|
886 |
|
887 TInt count = aPlainArray.Count();; |
|
888 TInt sizeNeeded = (count+1) / 2; |
|
889 |
|
890 // Grow the array to be big enough |
|
891 TInt k( 0 ); |
|
892 for ( k = 0; k < sizeNeeded; k++ ) |
|
893 { |
|
894 User::LeaveIfError( me->iMainArray.Append( 0xffffffff ) ); |
|
895 } |
|
896 |
|
897 TUint16* storagePtr = 0; |
|
898 |
|
899 if ( count > 0 ) |
|
900 { |
|
901 storagePtr = (TUint16*)&me->iMainArray[0]; |
|
902 } |
|
903 |
|
904 for( k = 0; k < count; k++ ) |
|
905 { |
|
906 TSIPronunciationID id = aPlainArray[ k ]; |
|
907 TBool overflow = false; |
|
908 |
|
909 // If the 32-bit value doesn't fit to 16 bits: |
|
910 // * Put overflow sign to main array |
|
911 // * Put the real ID to overflow array |
|
912 if ( id >= KNibble16Limit ) |
|
913 { |
|
914 overflow = true; |
|
915 id = KNibble16Limit; |
|
916 } |
|
917 |
|
918 // Write to the main array |
|
919 // ([overflow sign] OR [id, which fits to 16 bits]) |
|
920 *(storagePtr++) = (TUint16)id; |
|
921 |
|
922 // If it didn't fit to 16 bits, save it to the overflow array. |
|
923 if ( overflow ) |
|
924 { |
|
925 TInt err = me->iOverflowArray.Append( aPlainArray[k] ); |
|
926 User::LeaveIfError( err ); |
|
927 } |
|
928 } |
|
929 |
|
930 CleanupStack::Pop( me ); |
|
931 return( me ); |
|
932 } |
|
933 |
|
934 // ----------------------------------------------------------------------------- |
|
935 // CNibble16Coder::NewL |
|
936 // Two-phased constructor. Internalizes an array from stream. |
|
937 // ----------------------------------------------------------------------------- |
|
938 // |
|
939 CNibble16Coder* CNibble16Coder::NewL( RReadStream& aStream ) |
|
940 { |
|
941 CNibble16Coder* me = new (ELeave) CNibble16Coder; |
|
942 CleanupStack::PushL( me ); |
|
943 |
|
944 if ( aStream.ReadInt32L() != KBinaryNibble16ID ) |
|
945 { |
|
946 User::Leave( KErrCorrupt ); |
|
947 } |
|
948 |
|
949 Internalize32bitArrayL( aStream, me->iMainArray ); |
|
950 Internalize32bitArrayL( aStream, me->iOverflowArray ); |
|
951 |
|
952 CleanupStack::Pop( me ); |
|
953 return( me ); |
|
954 } |
|
955 |
|
956 // ----------------------------------------------------------------------------- |
|
957 // CNibble16Coder::~CNibble16Coder |
|
958 // Destructor |
|
959 // ----------------------------------------------------------------------------- |
|
960 // |
|
961 CNibble16Coder::~CNibble16Coder() |
|
962 { |
|
963 iMainArray.Close(); |
|
964 iOverflowArray.Close(); |
|
965 } |
|
966 |
|
967 // ----------------------------------------------------------------------------- |
|
968 // CNibble16Coder::DecodeReset |
|
969 // Moves cursor to the beginning of the array. |
|
970 // ----------------------------------------------------------------------------- |
|
971 // |
|
972 void CNibble16Coder::DecodeReset() |
|
973 { |
|
974 iPosition = 0; |
|
975 iOverflowPos = 0; |
|
976 } |
|
977 |
|
978 // ----------------------------------------------------------------------------- |
|
979 // CNibble16Coder::NextL |
|
980 // Returns a value in the array and moves the cursor forward. |
|
981 // ----------------------------------------------------------------------------- |
|
982 // |
|
983 TUint32 CNibble16Coder::NextL() |
|
984 { |
|
985 if ( iPosition >= 2*iMainArray.Count() ) |
|
986 User::Leave( KErrOverflow ); |
|
987 |
|
988 TUint16* storagePtr = (TUint16*)&iMainArray[0]; |
|
989 |
|
990 // Get the [pronunciation ID] OR [overflow sign] from main array. |
|
991 TSIPronunciationID id = storagePtr[ iPosition ]; |
|
992 |
|
993 // It was overflow sign; get whole 32-bit ID from overflow array |
|
994 if ( id == KNibble16Limit ) // It was pronunciation ID |
|
995 { |
|
996 if ( iOverflowPos == iOverflowArray.Count() ) |
|
997 { |
|
998 User::Leave( KErrOverflow ); |
|
999 } |
|
1000 |
|
1001 id = iOverflowArray[ iOverflowPos ]; |
|
1002 iOverflowPos++; |
|
1003 } |
|
1004 |
|
1005 // Update iterator |
|
1006 iPosition++; |
|
1007 |
|
1008 return( id ); |
|
1009 } |
|
1010 |
|
1011 // ----------------------------------------------------------------------------- |
|
1012 // CNibble16Coder::ExternalizeL |
|
1013 // Externalizes the array into a stream. |
|
1014 // ----------------------------------------------------------------------------- |
|
1015 // |
|
1016 void CNibble16Coder::ExternalizeL( RWriteStream& aStream ) |
|
1017 { |
|
1018 aStream.WriteInt32L( KBinaryNibble16ID ); |
|
1019 Externalize32bitArrayL( aStream, iMainArray ); |
|
1020 Externalize32bitArrayL( aStream, iOverflowArray ); |
|
1021 } |
|
1022 |
|
1023 |
|
1024 // ----------------------------------------------------------------------------- |
|
1025 // Implementation of CNibble4Coder starts from here. |
|
1026 // ----------------------------------------------------------------------------- |
|
1027 // |
|
1028 // ----------------------------------------------------------------------------- |
|
1029 // CNibble4Coder::NewL |
|
1030 // Two-phased constructor. |
|
1031 // ----------------------------------------------------------------------------- |
|
1032 // |
|
1033 CNibble4Coder* CNibble4Coder::NewL( const RArray<TUint32>& aPlainArray ) |
|
1034 { |
|
1035 CNibble4Coder* me = new (ELeave) CNibble4Coder; |
|
1036 CleanupStack::PushL( me ); |
|
1037 me->DecodeReset(); |
|
1038 |
|
1039 TInt count = aPlainArray.Count(); |
|
1040 |
|
1041 for ( TInt k( 0 ); k < count; k++ ) |
|
1042 { |
|
1043 TUint compactValue = aPlainArray[ k ]; |
|
1044 TBool overflow = EFalse; |
|
1045 |
|
1046 // If the value does not fit to 4 bytes, put an overflow sign to main |
|
1047 // array, and save the value to a separate overflow array. |
|
1048 if ( compactValue >= KNibble4Limit ) |
|
1049 { |
|
1050 compactValue = KNibble4Limit; |
|
1051 overflow = true; |
|
1052 } |
|
1053 |
|
1054 // Save the compact value |
|
1055 if ( me->iSlot == 0 ) |
|
1056 { |
|
1057 User::LeaveIfError( me->iMainArray.Append( compactValue ) ); |
|
1058 me->iSlot++; |
|
1059 } |
|
1060 else{ |
|
1061 // We save 4-bit values to 32-bit variable. So, there are 8 slots |
|
1062 // in each 32-bit entry. |
|
1063 |
|
1064 // Shift the value to correct slot. |
|
1065 // Earlier, we have made sure, that compactValue < 16. |
|
1066 compactValue = compactValue << (4 * me->iSlot); |
|
1067 |
|
1068 // Put it to the array. |
|
1069 me->iMainArray[ me->iPosition ] |
|
1070 = compactValue | me->iMainArray[ me->iPosition ]; |
|
1071 |
|
1072 // Update iterator |
|
1073 me->iSlot++; |
|
1074 if ( me->iSlot == 8 ) |
|
1075 { |
|
1076 me->iPosition++; |
|
1077 me->iSlot = 0; |
|
1078 } |
|
1079 } |
|
1080 |
|
1081 // If the value didn't fit to 4 bits, save it to 32-bit overflow array. |
|
1082 if ( overflow ) |
|
1083 { |
|
1084 TInt ret = me->iOverflowArray.Append( aPlainArray[ k ] ); |
|
1085 User::LeaveIfError( ret ); |
|
1086 } |
|
1087 } |
|
1088 |
|
1089 // If the number of entries was not divisible by 8, we have |
|
1090 // uninitialized slots in the end. Initialize them with 0xf. |
|
1091 |
|
1092 // If the decoder finds one of these 0xf's, it goes to overflow array, |
|
1093 // notices that all entries in the overflow array have been processed, |
|
1094 // and leaves. |
|
1095 if ( me->iSlot != 0 ) |
|
1096 { |
|
1097 TUint unusedValue = 0xffffffff; |
|
1098 unusedValue = unusedValue << (4 * me->iSlot); |
|
1099 |
|
1100 me->iMainArray[ me->iPosition ] |
|
1101 = unusedValue | me->iMainArray[ me->iPosition ]; |
|
1102 } |
|
1103 |
|
1104 me->DecodeReset(); |
|
1105 CleanupStack::Pop( me ); |
|
1106 return me; |
|
1107 } |
|
1108 |
|
1109 // ----------------------------------------------------------------------------- |
|
1110 // CNibble4Coder::NewL |
|
1111 // Two-phased constructor. |
|
1112 // ----------------------------------------------------------------------------- |
|
1113 // |
|
1114 CNibble4Coder* CNibble4Coder::NewL( RReadStream& aStream ) |
|
1115 { |
|
1116 CNibble4Coder* me = new (ELeave) CNibble4Coder; |
|
1117 CleanupStack::PushL( me ); |
|
1118 me->DecodeReset(); |
|
1119 |
|
1120 if ( aStream.ReadInt32L() != KBinaryNibble4ID ) |
|
1121 { |
|
1122 User::Leave( KErrCorrupt ); |
|
1123 } |
|
1124 |
|
1125 Internalize32bitArrayL( aStream, me->iMainArray ); |
|
1126 Internalize32bitArrayL( aStream, me->iOverflowArray ); |
|
1127 |
|
1128 CleanupStack::Pop( me ); |
|
1129 return( me ); |
|
1130 } |
|
1131 |
|
1132 // ----------------------------------------------------------------------------- |
|
1133 // CNibble4Coder::CNibble4Coder |
|
1134 // C++ default constructor can NOT contain any code, that |
|
1135 // might leave. |
|
1136 // ----------------------------------------------------------------------------- |
|
1137 // |
|
1138 CNibble4Coder::CNibble4Coder() |
|
1139 : iMainArray(50), |
|
1140 iOverflowArray(10) |
|
1141 { |
|
1142 DecodeReset(); |
|
1143 } |
|
1144 |
|
1145 // ----------------------------------------------------------------------------- |
|
1146 // CNibble4Coder::~CNibble4Coder |
|
1147 // Destructor. |
|
1148 // ----------------------------------------------------------------------------- |
|
1149 // |
|
1150 CNibble4Coder::~CNibble4Coder() |
|
1151 { |
|
1152 iMainArray.Close(); |
|
1153 iOverflowArray.Close(); |
|
1154 } |
|
1155 |
|
1156 // ----------------------------------------------------------------------------- |
|
1157 // CNibble4Coder::DecodeReset |
|
1158 // Moves cursor to the beginning of the array. |
|
1159 // ----------------------------------------------------------------------------- |
|
1160 // |
|
1161 void CNibble4Coder::DecodeReset() |
|
1162 { |
|
1163 iPosition = 0; |
|
1164 iSlot = 0; |
|
1165 iOverflowPos = 0; |
|
1166 } |
|
1167 |
|
1168 // ----------------------------------------------------------------------------- |
|
1169 // CNibble4Coder::NextL |
|
1170 // Returns a value in the array and moves cursor forwards. |
|
1171 // ----------------------------------------------------------------------------- |
|
1172 // |
|
1173 TUint32 CNibble4Coder::NextL() |
|
1174 { |
|
1175 if ( iPosition >= iMainArray.Count() ) |
|
1176 { |
|
1177 User::Leave( KErrOverflow ); |
|
1178 } |
|
1179 |
|
1180 TUint result = iMainArray[ iPosition ]; |
|
1181 |
|
1182 // In binary, the array entry is something like: |
|
1183 // hhhhhhhhhhhhhhhhrrrrllllllllllll (32 bits) |
|
1184 // r = result bits we're after |
|
1185 // h = higher bits |
|
1186 // l = lower bits |
|
1187 |
|
1188 // Drop the lower bits |
|
1189 result = result >> (4 * iSlot ); |
|
1190 // Drop the higher bits |
|
1191 result = result & 0xf; |
|
1192 |
|
1193 // If the value didn't fit to 4 bits, get it from the overflow array. |
|
1194 if ( result >= KNibble4Limit ) |
|
1195 { |
|
1196 if ( iOverflowPos >= iOverflowArray.Count() ) |
|
1197 { |
|
1198 User::Leave( KErrOverflow ); |
|
1199 } |
|
1200 |
|
1201 result = iOverflowArray[ iOverflowPos ]; |
|
1202 iOverflowPos++; |
|
1203 } |
|
1204 |
|
1205 // Update iterator |
|
1206 iSlot++; |
|
1207 if ( iSlot == 8 ) |
|
1208 { |
|
1209 iPosition++; |
|
1210 iSlot = 0; |
|
1211 } |
|
1212 |
|
1213 return( result ); |
|
1214 } |
|
1215 |
|
1216 // ----------------------------------------------------------------------------- |
|
1217 // CNibble4Coder::ExternalizeL |
|
1218 // Stores the object to the stream. |
|
1219 // ----------------------------------------------------------------------------- |
|
1220 // |
|
1221 void CNibble4Coder::ExternalizeL( RWriteStream& aStream ) |
|
1222 { |
|
1223 aStream.WriteInt32L( KBinaryNibble4ID ); |
|
1224 Externalize32bitArrayL( aStream, iMainArray ); |
|
1225 Externalize32bitArrayL( aStream, iOverflowArray ); |
|
1226 } |
|
1227 |
|
1228 |
|
1229 // ----------------------------------------------------------------------------- |
|
1230 // Implementation of CRLECoder starts from here. |
|
1231 // ----------------------------------------------------------------------------- |
|
1232 // |
|
1233 // ----------------------------------------------------------------------------- |
|
1234 // CRLECoder::NewL |
|
1235 // Two-phased constructor. |
|
1236 // ----------------------------------------------------------------------------- |
|
1237 // |
|
1238 CRLECoder* CRLECoder::NewL( const RArray<TUint16>& aPlainArray ) |
|
1239 { |
|
1240 CRLECoder* me = new (ELeave) CRLECoder; |
|
1241 CleanupStack::PushL( me ); |
|
1242 me->DecodeReset(); |
|
1243 |
|
1244 if ( aPlainArray.Count() == 0 ) |
|
1245 { |
|
1246 CleanupStack::Pop(); |
|
1247 return( me ); |
|
1248 } |
|
1249 |
|
1250 TInt count = aPlainArray.Count(); |
|
1251 |
|
1252 if ( count > 0 ) |
|
1253 { |
|
1254 CRLECoder::TValueAndCount valueCount; |
|
1255 |
|
1256 valueCount.iValue = aPlainArray[ 0 ]; |
|
1257 valueCount.iCount = 1; |
|
1258 |
|
1259 for ( TInt k( 1 ); k < count; k++ ) |
|
1260 { |
|
1261 if ( aPlainArray[ k ] == valueCount.iValue ) |
|
1262 { |
|
1263 valueCount.iCount++; |
|
1264 } |
|
1265 else{ |
|
1266 User::LeaveIfError( me->iRleArray.Append( valueCount ) ); |
|
1267 |
|
1268 valueCount.iCount = 1; |
|
1269 valueCount.iValue = aPlainArray[ k ]; |
|
1270 } |
|
1271 } |
|
1272 |
|
1273 User::LeaveIfError( me->iRleArray.Append( valueCount ) ); |
|
1274 } |
|
1275 |
|
1276 CleanupStack::Pop( me ); |
|
1277 return me; |
|
1278 } |
|
1279 |
|
1280 // ----------------------------------------------------------------------------- |
|
1281 // CRLECoder::NewL |
|
1282 // Two-phased constructor. |
|
1283 // ----------------------------------------------------------------------------- |
|
1284 // |
|
1285 CRLECoder* CRLECoder::NewL( RReadStream& aStream ) |
|
1286 { |
|
1287 CRLECoder* me = new (ELeave) CRLECoder; |
|
1288 CleanupStack::PushL( me ); |
|
1289 me->DecodeReset(); |
|
1290 |
|
1291 if ( aStream.ReadInt32L() != KBinaryRLEID ) |
|
1292 { |
|
1293 User::Leave( KErrCorrupt ); |
|
1294 } |
|
1295 |
|
1296 TInt count = aStream.ReadInt32L(); |
|
1297 TInt err = KErrNone; |
|
1298 |
|
1299 TUint32 value; |
|
1300 CRLECoder::TValueAndCount* valuePtr = (CRLECoder::TValueAndCount*)&value; |
|
1301 |
|
1302 for ( TInt k( 0 ); k < count; k++ ) |
|
1303 { |
|
1304 value = aStream.ReadInt32L(); |
|
1305 err |= me->iRleArray.Append( *valuePtr ); |
|
1306 } |
|
1307 |
|
1308 User::LeaveIfError( err ); |
|
1309 |
|
1310 CleanupStack::Pop( me ); |
|
1311 return( me ); |
|
1312 } |
|
1313 |
|
1314 // ----------------------------------------------------------------------------- |
|
1315 // CRLECoder::CRLECoder |
|
1316 // C++ default constructor can NOT contain any code, that |
|
1317 // might leave. |
|
1318 // ----------------------------------------------------------------------------- |
|
1319 // |
|
1320 CRLECoder::CRLECoder() |
|
1321 : iRleArray(50) |
|
1322 { |
|
1323 DecodeReset(); |
|
1324 } |
|
1325 |
|
1326 // ----------------------------------------------------------------------------- |
|
1327 // CRLECoder::~CRLECoder |
|
1328 // Destructor. |
|
1329 // ----------------------------------------------------------------------------- |
|
1330 // |
|
1331 CRLECoder::~CRLECoder() |
|
1332 { |
|
1333 iRleArray.Close(); |
|
1334 } |
|
1335 |
|
1336 // ----------------------------------------------------------------------------- |
|
1337 // CRLECoder::DecodeReset |
|
1338 // Moves cursor to the beginning of the array. |
|
1339 // ----------------------------------------------------------------------------- |
|
1340 // |
|
1341 void CRLECoder::DecodeReset() |
|
1342 { |
|
1343 iPosition = 0; |
|
1344 iRepetition = 0; |
|
1345 } |
|
1346 |
|
1347 // ----------------------------------------------------------------------------- |
|
1348 // CRLECoder::NextL |
|
1349 // Returns a value in the array and moves cursor forwards. |
|
1350 // ----------------------------------------------------------------------------- |
|
1351 // |
|
1352 TUint16 CRLECoder::NextL() |
|
1353 { |
|
1354 if ( iPosition >= iRleArray.Count() ) |
|
1355 { |
|
1356 User::Leave( KErrOverflow ); |
|
1357 } |
|
1358 |
|
1359 TUint16 result = iRleArray[iPosition].iValue; |
|
1360 |
|
1361 iRepetition++; |
|
1362 TUint16 maxRepetitions = iRleArray[iPosition].iCount; |
|
1363 |
|
1364 if ( iRepetition >= maxRepetitions ) |
|
1365 { |
|
1366 iPosition++; |
|
1367 iRepetition = 0; |
|
1368 } |
|
1369 |
|
1370 return result; |
|
1371 } |
|
1372 |
|
1373 // ----------------------------------------------------------------------------- |
|
1374 // CRLECoder::ExternalizeL |
|
1375 // Stores the object to the stream. |
|
1376 // ----------------------------------------------------------------------------- |
|
1377 // |
|
1378 void CRLECoder::ExternalizeL( RWriteStream& aStream ) |
|
1379 { |
|
1380 aStream.WriteInt32L( KBinaryRLEID ); |
|
1381 TInt count = iRleArray.Count(); |
|
1382 |
|
1383 aStream.WriteInt32L( count ); |
|
1384 |
|
1385 if ( count > 0 ) |
|
1386 { |
|
1387 TValueAndCount* startPtr = &(iRleArray[0]); |
|
1388 aStream.WriteL( (TUint8*)startPtr, sizeof(TValueAndCount) * count ); |
|
1389 } |
|
1390 |
|
1391 } |
|
1392 |
|
1393 |
|
1394 // ----------------------------------------------------------------------------- |
|
1395 // Implementation of CYesNoCoder starts from here. |
|
1396 // ----------------------------------------------------------------------------- |
|
1397 // |
|
1398 // ----------------------------------------------------------------------------- |
|
1399 // CYesNoCoder::DecodeReset |
|
1400 // Moves cursor to the beginning of the array. |
|
1401 // ----------------------------------------------------------------------------- |
|
1402 // |
|
1403 void CYesNoCoder::DecodeReset() |
|
1404 { |
|
1405 iPosition = 0; |
|
1406 iMask = 0x00000001; |
|
1407 } |
|
1408 |
|
1409 // ----------------------------------------------------------------------------- |
|
1410 // CYesNoCoder::NextBit |
|
1411 // Moves the cursor forwards. |
|
1412 // ----------------------------------------------------------------------------- |
|
1413 // |
|
1414 void CYesNoCoder::NextBit(void) |
|
1415 { |
|
1416 // Increase the iterator. |
|
1417 iMask <<= 1; |
|
1418 if ( iMask == 0 ) |
|
1419 { |
|
1420 iPosition++; |
|
1421 iMask = 1; |
|
1422 } |
|
1423 } |
|
1424 |
|
1425 // ----------------------------------------------------------------------------- |
|
1426 // CYesNoCoder::NewL |
|
1427 // Two-phased constructor. |
|
1428 // ----------------------------------------------------------------------------- |
|
1429 // |
|
1430 CYesNoCoder* CYesNoCoder::NewL() |
|
1431 { |
|
1432 CYesNoCoder* me = new (ELeave) CYesNoCoder; |
|
1433 |
|
1434 me->DecodeReset(); |
|
1435 |
|
1436 return( me ); |
|
1437 } |
|
1438 |
|
1439 // ----------------------------------------------------------------------------- |
|
1440 // CYesNoCoder::NewL |
|
1441 // Two-phased constructor. |
|
1442 // ----------------------------------------------------------------------------- |
|
1443 // |
|
1444 CYesNoCoder* CYesNoCoder::NewL( RReadStream& aStream ) |
|
1445 { |
|
1446 CYesNoCoder* me = new (ELeave) CYesNoCoder; |
|
1447 CleanupStack::PushL( me ); |
|
1448 me->DecodeReset(); |
|
1449 |
|
1450 Internalize32bitArrayL( aStream, me->iStore ); |
|
1451 |
|
1452 CleanupStack::Pop( me ); |
|
1453 return( me ); |
|
1454 } |
|
1455 |
|
1456 // ----------------------------------------------------------------------------- |
|
1457 // CYesNoCoder::CYesNoCoder |
|
1458 // C++ default constructor can NOT contain any code, that |
|
1459 // might leave. |
|
1460 // ----------------------------------------------------------------------------- |
|
1461 // |
|
1462 CYesNoCoder::CYesNoCoder() |
|
1463 : iStore(10) |
|
1464 { |
|
1465 DecodeReset(); |
|
1466 } |
|
1467 |
|
1468 // ----------------------------------------------------------------------------- |
|
1469 // CYesNoCoder::~CYesNoCoder |
|
1470 // Destructor. |
|
1471 // ----------------------------------------------------------------------------- |
|
1472 // |
|
1473 CYesNoCoder::~CYesNoCoder() |
|
1474 { |
|
1475 iStore.Close(); |
|
1476 } |
|
1477 |
|
1478 // ----------------------------------------------------------------------------- |
|
1479 // CYesNoCoder::EncodeL |
|
1480 // Encodes a bit. |
|
1481 // ----------------------------------------------------------------------------- |
|
1482 // |
|
1483 void CYesNoCoder::EncodeL( TBool aValue ) |
|
1484 { |
|
1485 // Do we need to grow the size of the array? |
|
1486 if ( iMask == 1 ) |
|
1487 { |
|
1488 User::LeaveIfError( iStore.Append( 0 ) ); |
|
1489 } |
|
1490 |
|
1491 // Store the value, if it is 'yes'. |
|
1492 if ( aValue ) |
|
1493 { |
|
1494 iStore[ iPosition ] |= iMask; |
|
1495 } |
|
1496 |
|
1497 // Increase the iterator |
|
1498 NextBit(); |
|
1499 } |
|
1500 |
|
1501 // ----------------------------------------------------------------------------- |
|
1502 // CYesNoCoder::NextL |
|
1503 // Returns a value in the array and moves cursor forwards. |
|
1504 // ----------------------------------------------------------------------------- |
|
1505 // |
|
1506 TBool CYesNoCoder::NextL() |
|
1507 { |
|
1508 TBool result = iStore[ iPosition ] & iMask; |
|
1509 |
|
1510 // Increase the iterator |
|
1511 NextBit(); |
|
1512 |
|
1513 return( result ); |
|
1514 } |
|
1515 |
|
1516 // ----------------------------------------------------------------------------- |
|
1517 // CYesNoCoder::ExternalizeL |
|
1518 // Stores the object to the stream. |
|
1519 // (other items were commented in the headers) |
|
1520 // ----------------------------------------------------------------------------- |
|
1521 // |
|
1522 void CYesNoCoder::ExternalizeL( RWriteStream& aStream ) |
|
1523 { |
|
1524 aStream.WriteInt32L( KBinaryYesNoID ); |
|
1525 Externalize32bitArrayL( aStream, iStore ); |
|
1526 } |
|
1527 |
|
1528 // End of File |
|