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1 /* |
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2 * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Implementation of the EnvironmentalReverb effect message handler class. |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include "EnvironmentalReverbMessageHandler.h" |
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22 #include "EnvironmentalReverbMessageTypes.h" |
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23 #include <EnvironmentalReverbBase.h> |
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24 #include "EffectDataQueItem.h" |
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25 #ifdef _DEBUG |
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26 #include <e32svr.h> |
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27 #endif |
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28 |
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29 // ================= MEMBER FUNCTIONS ======================= |
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30 |
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31 // C++ default constructor can NOT contain any code, that |
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32 // might leave. |
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33 // |
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34 CEnvironmentalReverbMessageHandler::CEnvironmentalReverbMessageHandler( |
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35 CEnvironmentalReverb* aEnvironmentalReverb ) |
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36 : CMMFObject(KUidEnvironmentalReverbEffect), |
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37 iEnvironmentalReverb(NULL), |
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38 iMessage(NULL), |
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39 iRegistered(EFalse), |
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40 iEffectDataQue(NULL) |
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41 { |
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42 iEnvironmentalReverb = aEnvironmentalReverb; |
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43 } |
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44 |
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45 |
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46 EXPORT_C CEnvironmentalReverbMessageHandler* CEnvironmentalReverbMessageHandler::NewL( |
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47 TAny* aCustomInterface ) |
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48 { |
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49 CEnvironmentalReverb* environmentalReverb = (CEnvironmentalReverb*)aCustomInterface; |
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50 CEnvironmentalReverbMessageHandler* self = new (ELeave) CEnvironmentalReverbMessageHandler(environmentalReverb); |
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51 self->ConstructL(); |
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52 return self; |
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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 // CEnvironmentalReverbMessageHandler::ConstructL |
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58 // Symbian 2nd phase constructor can leave. |
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59 // Create and initializes the effect data queue. |
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60 // ----------------------------------------------------------------------------- |
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61 // |
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62 void CEnvironmentalReverbMessageHandler::ConstructL() |
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63 { |
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64 iEffectDataQue = new(ELeave) TSglQue<CEffectDataQueItem>(_FOFF(CEffectDataQueItem, iLink)); |
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65 } |
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66 |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // CEnvironmentalReverbMessageHandler::~CEnvironmentalReverbMessageHandler |
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70 // Before going away, unregister with the CI EnvironmentalReverb object. |
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71 // The observation message must be completed if outstanding. |
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72 // The effect data queue must be emptied and destroyed. |
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73 // ----------------------------------------------------------------------------- |
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74 // |
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75 CEnvironmentalReverbMessageHandler::~CEnvironmentalReverbMessageHandler() |
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76 { |
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77 |
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78 #ifdef _DEBUG |
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79 RDebug::Print(_L("CEnvironmentalReverbMessageHandler::~CEnvironmentalReverbMessageHandler")); |
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80 #endif |
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81 if(iEnvironmentalReverb) |
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82 iEnvironmentalReverb->UnRegisterObserver(*this); |
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83 iRegistered = EFalse; |
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84 |
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85 if(iMessage) |
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86 { |
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87 if ( !iMessage->IsCompleted() ) |
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88 { |
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89 iMessage->Complete(KErrCancel); |
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90 delete iMessage; |
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91 } |
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92 } |
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93 |
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94 if ( iEffectDataQue ) |
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95 { |
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96 CEffectDataQueItem* queItem; |
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97 while ( !iEffectDataQue->IsEmpty() ) |
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98 { |
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99 queItem = iEffectDataQue->First(); |
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100 iEffectDataQue->Remove(*queItem); |
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101 delete queItem; |
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102 } |
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103 |
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104 delete iEffectDataQue; |
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105 } |
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106 |
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107 delete iEnvironmentalReverb; |
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108 |
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109 } |
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110 |
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111 |
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112 // --------------------------------------------------------- |
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113 // CEnvironmentalReverbMessageHandler::HandleRequest |
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114 // (other items were commented in a header). |
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115 // --------------------------------------------------------- |
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116 // |
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117 void CEnvironmentalReverbMessageHandler::HandleRequest( |
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118 TMMFMessage& aMessage ) |
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119 { |
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120 ASSERT(aMessage.Destination().InterfaceId() == KUidEnvironmentalReverbEffect); |
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121 TRAPD(error,DoHandleRequestL(aMessage)); |
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122 if ( error ) |
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123 { |
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124 aMessage.Complete(error); |
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125 } |
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126 } |
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127 |
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128 // --------------------------------------------------------- |
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129 // CEnvironmentalReverbMessageHandler::DoHandleRequestL |
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130 // Dispatches the message to the appropriate handler. |
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131 // --------------------------------------------------------- |
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132 // |
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133 void CEnvironmentalReverbMessageHandler::DoHandleRequestL( |
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134 TMMFMessage& aMessage ) |
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135 { |
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136 switch( aMessage.Function() ) |
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137 { |
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138 case EErfInitialize: |
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139 { |
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140 DoInitializeL(aMessage); |
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141 break; |
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142 } |
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143 case EErfApply: |
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144 { |
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145 DoApplyL(aMessage); |
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146 break; |
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147 } |
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148 case EErfObserve: |
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149 { |
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150 DoObserveL(aMessage); |
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151 break; |
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152 } |
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153 |
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154 |
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155 |
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156 default: |
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157 { |
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158 aMessage.Complete(KErrNotSupported); |
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159 } |
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160 } |
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161 } |
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162 |
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163 // --------------------------------------------------------- |
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164 // CEnvironmentalReverbMessageHandler::DoInitializeL |
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165 // --------------------------------------------------------- |
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166 // |
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167 void CEnvironmentalReverbMessageHandler::DoInitializeL(TMMFMessage& aMessage) |
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168 { |
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169 #ifdef _DEBUG |
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170 RDebug::Print(_L("CEnvironmentalReverbMessageHandler::DoInitializeL")); |
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171 #endif |
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172 aMessage.WriteDataToClient(iEnvironmentalReverb->DoEffectData()); |
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173 aMessage.Complete(KErrNone); |
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174 } |
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175 |
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176 |
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177 |
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178 // --------------------------------------------------------- |
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179 // CEnvironmentalReverbMessageHandler::DoApplyL |
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180 // Extracts the data from the message. The client EnvironmentalReverb |
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181 // data is applied to the CI EnvironmentalReverb object. |
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182 // --------------------------------------------------------- |
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183 // |
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184 void CEnvironmentalReverbMessageHandler::DoApplyL( |
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185 TMMFMessage& aMessage ) |
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186 { |
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187 #ifdef _DEBUG |
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188 RDebug::Print(_L("CEnvironmentalReverbMessageHandler::DoApplyL")); |
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189 #endif |
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190 TEfEnvReverbDataPckg environmentalReverbPckgFromClient; |
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191 aMessage.ReadData1FromClient(environmentalReverbPckgFromClient); |
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192 iEnvironmentalReverb->SetEffectData(environmentalReverbPckgFromClient); |
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193 iEnvironmentalReverb->ApplyL(); |
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194 aMessage.Complete(KErrNone); |
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195 } |
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196 |
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197 // --------------------------------------------------------- |
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198 // CEnvironmentalReverbMessageHandler::DoObserveL |
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199 // Receives the observation request message and depending |
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200 // on the status of the effect data queue, the message is |
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201 // completed immediately or saved for later completion. |
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202 // --------------------------------------------------------- |
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203 // |
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204 void CEnvironmentalReverbMessageHandler::DoObserveL( |
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205 TMMFMessage& aMessage ) |
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206 { |
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207 |
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208 #ifdef _DEBUG |
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209 RDebug::Print(_L("CEnvironmentalReverbMessageHandler::DoObserveL")); |
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210 #endif |
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211 |
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212 if ( !iRegistered ) |
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213 { |
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214 iEnvironmentalReverb->RegisterObserverL(*this); |
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215 iRegistered = ETrue; |
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216 } |
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217 |
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218 if ( iEffectDataQue->IsEmpty() ) |
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219 { |
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220 //iMessage = &aMessage; |
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221 iMessage = new(ELeave) TMMFMessage(aMessage); |
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222 } |
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223 else |
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224 { |
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225 TEfEnvReverbDataPckg dataPckg; |
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226 CEffectDataQueItem* item = iEffectDataQue->First(); |
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227 dataPckg.Copy(item->EffectData()); |
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228 aMessage.WriteDataToClient(dataPckg); |
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229 aMessage.Complete(KErrNone); |
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230 iEffectDataQue->Remove(*item); |
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231 delete item; |
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232 } |
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233 } |
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234 |
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235 // --------------------------------------------------------- |
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236 // CEnvironmentalReverbMessageHandler::EffectChanged |
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237 // The CI EnvironmentalReverb object has changed state. |
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238 // The observation message is completed if no data has been |
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239 // queued up. Otherwise, the CI EnvironmentalReverb object's data is |
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240 // packaged and queued. |
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241 // --------------------------------------------------------- |
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242 // |
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243 void CEnvironmentalReverbMessageHandler::EffectChanged( |
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244 const CAudioEffect* aAudioEffect, |
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245 TUint8 /*aEvent*/ ) |
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246 { |
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247 #ifdef _DEBUG |
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248 RDebug::Print(_L("CEnvironmentalReverbMessageHandler::EffectChanged")); |
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249 #endif |
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250 |
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251 if ( iMessage && !iMessage->IsCompleted() && iEffectDataQue->IsEmpty() ) |
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252 { |
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253 iMessage->WriteDataToClient(((CEnvironmentalReverb*)aAudioEffect)->DoEffectData()); |
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254 iMessage->Complete(KErrNone); |
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255 delete iMessage; |
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256 iMessage = NULL; |
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257 } |
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258 else |
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259 { |
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260 // Saves the data and complete an observation message next time around. |
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261 HBufC8* data = NULL; |
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262 TRAPD(err1,data = ((CEnvironmentalReverb*)aAudioEffect)->DoEffectData().AllocL()); |
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263 if(!err1) |
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264 { |
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265 //CleanupStack::PushL(data); |
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266 CEffectDataQueItem* item = NULL; |
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267 TRAPD(err2,item = CEffectDataQueItem::NewL(data)); |
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268 if(!err2) |
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269 { |
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270 iEffectDataQue->AddLast(*item); |
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271 } |
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272 else |
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273 { |
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274 delete data; |
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275 } |
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276 } |
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277 else |
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278 { |
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279 #ifdef _DEBUG |
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280 RDebug::Print(_L("CEnvironmentalReverbMessageHandler::EffectChanged Error Allocating Memory %d"),err1); |
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281 #endif |
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282 } |
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283 } |
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284 |
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285 } |
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286 |
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287 |
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288 |
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289 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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290 |
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291 |
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292 // End of File |