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1 /* |
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2 * Copyright (c) 2003-2006 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: CNssContextSrsPortal provides SRS related functionalities for |
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15 * context processing. A context is saved in the SRS DB by creating |
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16 * model bank, lexicon, and grammar into the SRS. |
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17 * |
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18 */ |
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19 |
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20 |
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21 // INCLUDE FILES |
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22 #include "nssvasccontextsrsportal.h" |
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23 #include "rubydebug.h" |
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24 |
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25 |
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26 // ================= MEMBER FUNCTIONS ======================= |
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27 |
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28 // --------------------------------------------------------- |
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29 // CNssContextSrsPortal::CNssContextSrsPortal |
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30 // C++ default constructor can NOT contain any code that |
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31 // might leave. |
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32 // --------------------------------------------------------- |
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33 // |
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34 CNssContextSrsPortal::CNssContextSrsPortal() |
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35 { |
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36 RUBY_DEBUG0( "CNssContextSrsPortal::CNssContextSrsPortal" ); |
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37 |
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38 iTerminationState = CNssContextSrsPortal::EVASTERMINATION_NOT_PENDING; |
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39 iState = EVASNone; |
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40 iRecovery = EFalse; |
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41 } |
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42 |
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43 // --------------------------------------------------------- |
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44 // CNssContextSrsPortal::~CNssContextSrsPortal |
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45 // Destructor |
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46 // --------------------------------------------------------- |
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47 // |
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48 CNssContextSrsPortal::~CNssContextSrsPortal() |
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49 { |
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50 RUBY_DEBUG0( "CNssContextSrsPortal::~CNssContextSrsPortal" ); |
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51 |
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52 DeleteSRS(); |
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53 } |
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54 |
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55 // --------------------------------------------------------- |
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56 // CNssContextSrsPortal::MsruoEvent |
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57 // interface implementation from MSpeechRecognitionUtilityObserver |
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58 // --------------------------------------------------------- |
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59 // |
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60 void CNssContextSrsPortal::MsruoEvent( TUid aEvent, TInt aResult ) |
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61 { |
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62 RUBY_DEBUG2( "CNssContextSrsPortal::MsruoEvent - Event=0x%x, Result=%d", aEvent.iUid, aResult ); |
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63 |
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64 TInt err = KErrNone; |
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65 switch ( aEvent.iUid ) |
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66 { |
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67 case KUidAsrEventCreateGrammarVal: |
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68 RUBY_DEBUG0( "CNssContextSrsPortal::MsruoEvent - CreateGrammar" ); |
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69 |
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70 if ( aResult == KErrNone ) |
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71 { |
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72 iContext->SetGrammarId( iGrammarId ); |
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73 iState = EVasWaitForCommitChanges; // wait for commit |
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74 iSrsDBEventHandler->HandleSaveSrsDBCompleted(); |
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75 } |
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76 else |
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77 { |
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78 CleanUp( aResult ); |
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79 } |
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80 break; |
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81 |
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82 |
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83 case KUidAsrEventCreateLexiconVal: |
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84 RUBY_DEBUG0( "CNssContextSrsPortal::MsruoEvent - CreateLexicon" ); |
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85 |
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86 if (aResult == KErrNone) |
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87 { |
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88 iContext->SetLexiconId(iLexiconId); |
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89 iState = EVASCreateGrammar; |
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90 err = iSpeechRecognitionUtility->CreateGrammar(iGrammarId); |
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91 if(err != KErrNone) |
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92 { |
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93 CleanUp(aResult); |
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94 } |
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95 } |
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96 else |
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97 { |
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98 CleanUp(aResult); |
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99 } |
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100 break; |
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101 |
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102 |
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103 case KUidAsrEventCreateModelBankVal: |
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104 RUBY_DEBUG0( "CNssContextSrsPortal::MsruoEvent - CreateModelBank" ); |
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105 |
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106 // Two states may trigger this message: |
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107 // * When creating the first context |
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108 // * When resetting to factory settings |
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109 |
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110 // "Reset factory settings" |
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111 if ( iState == EVASResetCreateModelBank ) |
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112 { |
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113 if ( aResult == KErrNone ) |
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114 { |
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115 iState = EVasWaitForCommitChanges; // wait for commit |
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116 iSrsDBEventHandler->HandleResetSrsDBCompleted(); |
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117 } |
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118 else |
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119 { |
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120 CleanUp( aResult ); |
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121 } |
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122 } |
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123 else |
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124 { |
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125 |
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126 if ( aResult == KErrNone ) |
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127 { |
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128 iContext->SetModelBankId(iModelBankId); |
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129 iState = EVASCreateLexicon; |
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130 err = iSpeechRecognitionUtility->CreateLexicon(iLexiconId); |
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131 if ( err != KErrNone ) |
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132 { |
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133 CleanUp( aResult ); |
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134 } |
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135 } |
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136 else |
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137 { |
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138 CleanUp( aResult ); |
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139 } |
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140 } |
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141 break; |
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142 |
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143 |
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144 case KUidAsrEventRemoveGrammarVal: |
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145 RUBY_DEBUG0( "CNssContextSrsPortal::MsruoEvent - RemoveGrammar" ); |
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146 |
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147 if ( aResult == KErrNone || aResult == KErrNotFound ) |
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148 { |
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149 iState = EVASRemoveLexicon; |
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150 err = iSpeechRecognitionUtility->RemoveLexicon( |
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151 (TSILexiconID) iContext->LexiconId() ); |
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152 if ( err != KErrNone ) |
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153 { |
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154 CleanUp( aResult ); |
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155 } |
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156 } |
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157 else |
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158 { |
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159 CleanUp( aResult ); |
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160 } |
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161 break; |
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162 |
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163 // This case may never being called. |
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164 case KUidAsrEventRemoveLexiconVal: |
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165 RUBY_DEBUG0( "CNssContextSrsPortal::MsruoEvent - RemoveLexicon" ); |
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166 |
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167 if ( aResult == KErrNone || aResult == KErrNotFound ) |
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168 { |
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169 iState = EVasWaitForCommitChanges; // wait for commit |
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170 iSrsDBEventHandler->HandleDeleteSrsDBCompleted(); |
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171 } |
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172 else |
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173 { |
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174 CleanUp( aResult ); |
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175 } |
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176 break; |
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177 |
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178 |
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179 // This case may never being called. |
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180 case KUidAsrEventRemoveModelBankVal: |
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181 RUBY_DEBUG0( "CNssContextSrsPortal::MsruoEvent - RemoveModelBank" ); |
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182 |
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183 // "Reset factory settings": Remove speaker adapted model bank |
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184 // and create a new one. |
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185 if ( iState == EVASResetRemoveModelBank ) |
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186 { |
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187 TInt createErr = KErrNone; |
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188 |
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189 if ( aResult == KErrNone ) |
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190 { |
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191 iState = EVASResetCreateModelBank; |
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192 |
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193 createErr = iSpeechRecognitionUtility->CreateModelBank( *iResetModelBankId ); |
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194 } |
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195 |
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196 // If RemoveModelBank failed, or CreateModelBank 5 lines age failed. |
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197 if ( aResult != KErrNone || createErr != KErrNone ) |
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198 { |
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199 DeleteSRS(); |
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200 iSrsDBEventHandler->HandleSrsDBError( |
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201 MNssCoreSrsDBEventHandler::EVasRemoveModelBankFailed ); |
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202 } |
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203 } |
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204 else |
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205 { |
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206 // Legacy code from SDND - I don't know when this is invoked |
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207 if ( aResult == KErrNone || aResult == KErrNotFound ) |
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208 { |
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209 iState = EVasWaitForCommitChanges; // wait for commit |
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210 |
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211 DeleteSRS(); |
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212 iSrsDBEventHandler->HandleDeleteSrsDBCompleted(); |
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213 } |
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214 else |
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215 { |
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216 CleanUp( aResult ); |
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217 } |
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218 } |
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219 break; |
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220 |
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221 |
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222 |
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223 default: |
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224 RUBY_DEBUG0( "CNssContextSrsPortal::MsruoEvent - default" ); |
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225 CleanUp( aResult ); |
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226 break; |
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227 } |
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228 } |
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229 |
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230 // ----------------------------------------------------------------------------- |
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231 // CNssContextSrsPortal::DoSrsDBResult |
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232 // Method to process the SRS DB result. |
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233 // ----------------------------------------------------------------------------- |
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234 // |
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235 MNssCoreSrsDBEventHandler::TNssSrsDBResult |
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236 CNssContextSrsPortal::DoSrsDBResult(TInt aResult) |
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237 { |
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238 RUBY_DEBUG1( "CNssContextSrsPortal::DoSrsDBResult() aResult = %d", aResult ); |
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239 |
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240 MNssCoreSrsDBEventHandler::TNssSrsDBResult errorCode; |
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241 |
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242 switch (aResult) |
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243 { |
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244 case KErrDiskFull: |
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245 RUBY_DEBUG0( "CNssContextSrsPortal::DoSrsDBResult - KErrDiskFull" ); |
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246 |
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247 errorCode = MNssCoreSrsDBEventHandler::EVasDiskFull; |
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248 break; |
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249 case KErrNoMemory: |
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250 RUBY_DEBUG0( "CNssContextSrsPortal::DoSrsDBResult - KErrNoMemory" ); |
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251 |
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252 errorCode = MNssCoreSrsDBEventHandler::EVasNoMemory; |
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253 break; |
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254 default: |
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255 { |
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256 RUBY_DEBUG1( "CNssContextSrsPortal::DoSrsDBResult - default, state = %d", iState ); |
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257 |
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258 switch ( iState ) |
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259 { |
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260 case EVASCreateModelBank: |
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261 errorCode = MNssCoreSrsDBEventHandler::EVasCreateModelBankFailed; |
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262 break; |
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263 case EVASCreateLexicon: |
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264 errorCode = MNssCoreSrsDBEventHandler::EVasCreateLexiconFailed; |
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265 break; |
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266 case EVASCreateGrammar: |
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267 errorCode = MNssCoreSrsDBEventHandler::EVasCreateGrammarFailed; |
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268 break; |
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269 case EVASRemoveModelBank: |
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270 errorCode = MNssCoreSrsDBEventHandler::EVasRemoveModelBankFailed; |
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271 break; |
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272 case EVASRemoveLexicon: |
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273 errorCode = MNssCoreSrsDBEventHandler::EVasRemoveLexiconFailed; |
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274 break; |
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275 case EVASRemoveGrammar: |
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276 errorCode = MNssCoreSrsDBEventHandler::EVasRemoveGrammarFailed; |
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277 break; |
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278 default: |
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279 errorCode = MNssCoreSrsDBEventHandler::EVasDBOperationError; |
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280 break; |
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281 } |
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282 } |
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283 } |
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284 |
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285 return errorCode; |
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286 } |
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287 |
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288 |
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289 |
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290 // --------------------------------------------------------- |
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291 // CNssContextSrsPortal::BeginSaveContextL |
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292 // save context to srs database |
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293 // --------------------------------------------------------- |
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294 // |
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295 void CNssContextSrsPortal::BeginSaveContextL( CNssContext* aContext, |
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296 MNssCoreSrsDBEventHandler* aSrsDBEventHandler ) |
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297 { |
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298 RUBY_DEBUG_BLOCK( "CNssContextSrsPortal::BeginSaveContextL" ); |
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299 |
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300 iSrsDBEventHandler = aSrsDBEventHandler; |
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301 iContext = aContext; |
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302 |
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303 // verify the SRS is NULL, if not return failure |
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304 if ( iSpeechRecognitionUtility ) |
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305 { |
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306 User::Leave( KErrGeneral ); |
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307 } |
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308 |
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309 RUBY_DEBUG0( "CNssContextSrsPortal::CREATE SRS" ); |
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310 |
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311 iSpeechRecognitionUtility = CNssSiUtilityWrapper::NewL( *this, KNssVASApiUid ); |
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312 |
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313 TInt error; |
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314 iRecovery = EFalse; |
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315 |
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316 // if creating context first time, create model bank and lexicon |
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317 if ( !aContext->ModelBankAndLexiconExist() ) |
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318 { |
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319 iState = EVASCreateModelBank; |
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320 error = iSpeechRecognitionUtility->CreateModelBank(iModelBankId); |
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321 if ( error != KErrNone ) |
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322 { |
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323 DeleteSRS(); |
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324 User::Leave( error ); |
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325 } |
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326 } |
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327 else // Create grammar and lexicon |
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328 { |
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329 iState = EVASCreateLexicon; |
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330 error = iSpeechRecognitionUtility->CreateLexicon(iLexiconId); |
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331 if ( error != KErrNone ) |
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332 { |
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333 DeleteSRS(); |
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334 User::Leave( error ); |
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335 } |
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336 } |
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337 } |
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338 |
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339 // --------------------------------------------------------- |
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340 // CNssContextSrsPortal::BeginDeleteContextL |
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341 // deletes context from SRS. |
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342 // --------------------------------------------------------- |
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343 // |
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344 void CNssContextSrsPortal::BeginDeleteContextL(CNssContext* aContext, |
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345 MNssCoreSrsDBEventHandler* aSrsDBEventHandler) |
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346 { |
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347 RUBY_DEBUG_BLOCK( "CNssContextSrsPortal::BeginDeleteContextL" ); |
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348 |
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349 iSrsDBEventHandler = aSrsDBEventHandler; |
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350 iContext = aContext; |
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351 iRecovery = EFalse; |
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352 |
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353 // verify the SRS is NULL, if not return failure |
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354 if ( iSpeechRecognitionUtility ) |
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355 { |
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356 User::Leave( KErrGeneral ); |
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357 } |
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358 |
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359 RUBY_DEBUG0( "CNssContextSrsPortal::CREATE SRS" ); |
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360 |
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361 iSpeechRecognitionUtility = CNssSiUtilityWrapper::NewL( *this, KNssVASApiUid ); |
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362 iState = EVASRemoveGrammar; |
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363 |
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364 TInt error = iSpeechRecognitionUtility->RemoveGrammar( (TSIGrammarID)aContext->GrammarId() ); |
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365 if ( error != KErrNone ) |
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366 { |
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367 DeleteSRS(); |
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368 User::Leave( error ); |
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369 } |
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370 |
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371 // Lexicon will be deleted when grammar deletion callback arrives |
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372 } |
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373 |
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374 // --------------------------------------------------------- |
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375 // CNssContextSrsPortal::CommitSaveContext |
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376 // commit context changes from SRS. |
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377 // --------------------------------------------------------- |
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378 // |
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379 TInt CNssContextSrsPortal::CommitSaveContext() |
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380 { |
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381 RUBY_DEBUG0( "CNssContextSrsPortal::CommitSaveContext" ); |
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382 |
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383 TInt ret( KErrNone ); |
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384 |
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385 if ( iState == EVasWaitForCommitChanges ) |
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386 { |
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387 TInt error = iSpeechRecognitionUtility->CommitChanges(); |
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388 |
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389 if ( error != KErrNone ) |
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390 { |
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391 DeleteSRS(); |
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392 ret = error; |
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393 } |
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394 } |
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395 else |
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396 { |
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397 DeleteSRS(); |
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398 ret = KErrGeneral; |
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399 } |
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400 |
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401 DeleteSRS(); |
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402 iState = EVASNone; // reset the state |
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403 |
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404 return ret; |
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405 } |
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406 |
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407 // --------------------------------------------------------- |
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408 // CNssContextSrsPortal::RollbackSaveContext |
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409 // commit context changes from SRS. |
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410 // --------------------------------------------------------- |
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411 // |
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412 TInt CNssContextSrsPortal::RollbackSaveContext() |
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413 { |
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414 RUBY_DEBUG0( "CNssContextSrsPortal::RollbackSaveContext" ); |
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415 |
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416 if (iState != EVasWaitForCommitChanges) |
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417 { |
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418 DeleteSRS(); |
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419 return KErrGeneral; |
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420 } |
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421 |
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422 DeleteSRS(); |
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423 iState = EVASNone; // reset the state |
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424 return KErrNone; |
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425 } |
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426 |
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427 // --------------------------------------------------------- |
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428 // CNssContextSrsPortal::DeleteSRS |
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429 // Delete the SRS, and set it to NULL |
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430 // --------------------------------------------------------- |
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431 // |
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432 void CNssContextSrsPortal::DeleteSRS() |
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433 { |
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434 RUBY_DEBUG0( "CNssContextSrsPortal::DeleteSRS" ); |
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435 |
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436 if ( iSpeechRecognitionUtility ) |
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437 { |
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438 RUBY_DEBUG0( "CNssContextSrsPortal::deleted SRS........" ); |
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439 |
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440 delete iSpeechRecognitionUtility; |
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441 iSpeechRecognitionUtility = NULL; |
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442 |
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443 RUBY_DEBUG0( "CNssContextSrsPortal::.....SRS just deleted" ); |
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444 } |
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445 } |
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446 |
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447 // --------------------------------------------------------- |
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448 // CNssContextSrsPortal::CleanUp |
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449 // Clean up after SRS operation fail |
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450 // --------------------------------------------------------- |
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451 // |
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452 void CNssContextSrsPortal::CleanUp( TInt aResult ) |
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453 { |
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454 RUBY_DEBUG0( "CNssContextSrsPortal::CleanUp" ); |
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455 |
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456 DeleteSRS(); |
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457 |
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458 MNssCoreSrsDBEventHandler::TNssSrsDBResult errorCode = DoSrsDBResult( aResult ); |
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459 iSrsDBEventHandler->HandleSrsDBError( errorCode ); |
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460 } |
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461 |
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462 // --------------------------------------------------------- |
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463 // CNssContextSrsPortal::Register |
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464 // context portal keeps a count of number of contexts created |
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465 // increment count |
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466 // --------------------------------------------------------- |
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467 // |
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468 void CNssContextSrsPortal::Register() |
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469 { |
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470 iContextCount++; |
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471 } |
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472 |
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473 // --------------------------------------------------------- |
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474 // CNssContextSrsPortal::Deregister |
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475 // decrement count |
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476 // id count is zero, and context builder is deleted, delete itself (portal), |
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477 // --------------------------------------------------------- |
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478 // |
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479 void CNssContextSrsPortal::Deregister() |
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480 { |
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481 iContextCount--; |
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482 if ( iContextCount == 0 && iTerminationState == EVASTERMINATION_PENDING ) |
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483 { |
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484 delete this; |
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485 } |
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486 } |
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487 |
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488 // --------------------------------------------------------- |
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489 // CNssContextSrsPortal::ContextCount |
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490 // returns context count |
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491 // --------------------------------------------------------- |
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492 // |
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493 TInt CNssContextSrsPortal::ContextCount() |
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494 { |
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495 return iContextCount; |
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496 } |
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497 |
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498 // --------------------------------------------------------- |
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499 // CNssContextSrsPortal::SetTerminationState |
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500 // sets termination state |
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501 // --------------------------------------------------------- |
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502 // |
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503 void CNssContextSrsPortal::SetTerminationState( TNssTerminationState aState ) |
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504 { |
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505 iTerminationState = aState; |
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506 } |
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507 |
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508 // --------------------------------------------------------- |
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509 // CNssContextSrsPortal::BeginResetModelsL |
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510 // sets termination state |
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511 // --------------------------------------------------------- |
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512 // |
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513 void CNssContextSrsPortal::BeginResetModelsL( TSIModelBankID aAdaptedModels, |
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514 TSIModelBankID& aNewModels, |
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515 MNssCoreSrsDBEventHandler* aSrsDBEventHandler ) |
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516 { |
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517 RUBY_DEBUG_BLOCK( "CNssContextSrsPortal::BeginSaveContextL" ); |
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518 |
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519 iSrsDBEventHandler = aSrsDBEventHandler; |
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520 |
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521 // verify the SRS is NULL, if not return failure |
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522 if ( iSpeechRecognitionUtility ) |
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523 { |
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524 User::Leave( KErrGeneral ); |
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525 } |
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526 |
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527 RUBY_DEBUG0( "CNssContextSrsPortal::CREATE SRS" ); |
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528 |
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529 iSpeechRecognitionUtility = CNssSiUtilityWrapper::NewL( *this, KNssVASApiUid ); |
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530 TInt error = KErrNone; |
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531 iRecovery = EFalse; |
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532 |
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533 iState = EVASResetRemoveModelBank; |
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534 error = iSpeechRecognitionUtility->RemoveModelBank( aAdaptedModels ); |
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535 |
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536 if ( error != KErrNone ) |
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537 { |
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538 DeleteSRS(); |
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539 User::Leave( error ); |
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540 } |
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541 |
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542 iResetModelBankId = &aNewModels; |
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543 } |
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544 |
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545 // End of File |