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1 /* |
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2 * Copyright (c) 2006-2009 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: |
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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 #ifndef AUDIOPROCESSINGUNIT_H |
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21 #define AUDIOPROCESSINGUNIT_H |
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22 |
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23 #include <e32base.h> |
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24 #include <ecom/ecom.h> |
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25 #include <a3f/a3f_trace_utils.h> |
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26 #include <a3f/audioprocessingunittypeuids.h> |
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27 #include <a3f/maudioprocessingunit.h> |
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28 #include <a3f/maudioprocessingunitobserver.h> |
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29 |
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30 #include "componentparameters.h" |
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31 #include "mlogicalsettingsobserver.h" |
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32 |
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33 |
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34 /** |
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35 A generic AudioComponent base class implementation. |
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36 @see MAudioProcessingUnit |
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37 */ |
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38 class CAudioProcessingUnit: public CBase, |
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39 public MAudioProcessingUnit |
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40 { |
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41 |
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42 public: |
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43 |
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44 static CAudioProcessingUnit* NewL(TComponentParameters aParameters); |
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45 |
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46 /** |
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47 Destructor. |
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48 Releases all resources and deletes all objects owned by this instance. |
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49 */ |
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50 virtual ~CAudioProcessingUnit(); |
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51 |
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52 // from base class MAudioProcessingUnit |
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53 virtual TAudioComponentId InstanceId() const; |
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54 virtual TAudioContextId ContextId() const; |
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55 virtual TBool IsTypeOf(TUid aTypeId) const; |
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56 virtual TAny* Interface(TUid aType); |
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57 virtual TInt RegisterProcessingUnitObserver(MAudioProcessingUnitObserver& aObserver); |
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58 virtual void UnregisterProcessingUnitObserver(MAudioProcessingUnitObserver& aObserver); |
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59 |
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60 CAudioProcessingUnit(TAny* aParam); |
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61 |
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62 protected: // data |
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63 // Component type Uid |
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64 TUid iType; |
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65 |
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66 // Audio context Id |
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67 TAudioContextId iContextId; |
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68 |
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69 // Component instance Id |
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70 TAudioComponentId iInstanceId; |
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71 |
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72 // Array of component observers. |
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73 RPointerArray<MAudioProcessingUnitObserver> iAudioProcessingUnitObservers; |
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74 |
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75 // Settings observer |
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76 MLogicalSettingObserver* iSettingsObserver; |
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77 |
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78 private: // data |
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79 TUid iDtor_ID_Key; |
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80 }; |
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81 |
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82 // Interface's (abstract base class's) destructor |
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83 inline CAudioProcessingUnit::~CAudioProcessingUnit() |
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84 { |
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85 iAudioProcessingUnitObservers.Close(); |
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86 REComSession::DestroyedImplementation(iDtor_ID_Key); |
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87 } |
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88 |
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89 // Interface's (abstract base class's) static factory method implementation. |
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90 // Asks ECOM plugin framework to instantiate appropriate concret plugin |
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91 // implementation. |
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92 inline CAudioProcessingUnit* CAudioProcessingUnit::NewL(TComponentParameters aParameters) |
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93 { |
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94 TAny* ptr = REComSession::CreateImplementationL( aParameters.iTypeUid , _FOFF(CAudioProcessingUnit, iDtor_ID_Key), static_cast<TAny*>(&aParameters)); |
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95 return static_cast<CAudioProcessingUnit*>(ptr); |
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96 } |
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97 |
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98 inline CAudioProcessingUnit::CAudioProcessingUnit(TAny* aParam) |
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99 { |
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100 TComponentParameters* param = static_cast<TComponentParameters*>(aParam); |
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101 iType = param->iTypeUid; |
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102 iInstanceId = param->iInstanceId; |
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103 iContextId = param->iContextId; |
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104 iSettingsObserver = param->iSettingsObserver; |
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105 } |
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106 |
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107 // --------------------------------------------------------------------------- |
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108 // from class MAudioProcessingUnit |
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109 // CLogicalAudioCodec::GetContextId |
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110 // --------------------------------------------------------------------------- |
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111 inline TAudioContextId CAudioProcessingUnit::ContextId() const |
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112 { |
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113 return iContextId; |
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114 } |
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115 |
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116 inline TAudioComponentId CAudioProcessingUnit::InstanceId() const |
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117 { |
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118 return iInstanceId; |
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119 } |
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120 |
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121 // --------------------------------------------------------------------------- |
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122 // from class MAudioProcessingUnit |
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123 // CLogicalAudioCodec::RegisterComponentObserver |
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124 // --------------------------------------------------------------------------- |
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125 inline TInt CAudioProcessingUnit::RegisterProcessingUnitObserver(MAudioProcessingUnitObserver& aObserver) |
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126 { |
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127 TInt err = iAudioProcessingUnitObservers.Find(&aObserver); |
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128 if( err != KErrNotFound ) |
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129 { |
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130 err = KErrAlreadyExists; |
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131 } |
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132 else |
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133 { |
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134 err = iAudioProcessingUnitObservers.Append(&aObserver); |
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135 } |
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136 return err; |
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137 } |
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138 |
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139 // --------------------------------------------------------------------------- |
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140 // from class MAudioProcessingUnit |
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141 // CLogicalAudioCodec::UnregisterComponentObserver |
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142 // --------------------------------------------------------------------------- |
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143 inline void CAudioProcessingUnit::UnregisterProcessingUnitObserver(MAudioProcessingUnitObserver& aObserver) |
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144 { |
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145 TInt idxOrErr = iAudioProcessingUnitObservers.Find(&aObserver); |
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146 if( idxOrErr != KErrNotFound ) |
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147 { |
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148 iAudioProcessingUnitObservers.Remove(idxOrErr); |
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149 } |
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150 } |
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151 |
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152 inline TBool CAudioProcessingUnit::IsTypeOf(TUid) const {return EFalse;} |
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153 inline TAny* CAudioProcessingUnit::Interface(TUid) { TAny* any(NULL); return any;} |
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154 |
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155 #endif // AUDIOPROCESSINGUNIT_H |