author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 27 Apr 2010 16:30:29 +0300 | |
branch | RCL_3 |
changeset 19 | 04becd199f91 |
permissions | -rw-r--r-- |
19
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Revision: v2.1.22
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1 |
/* |
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Revision: v2.1.22
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* Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies). |
04becd199f91
Revision: v2.1.22
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* All rights reserved. |
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Revision: v2.1.22
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* This component and the accompanying materials are made available |
04becd199f91
Revision: v2.1.22
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* under the terms of "Eclipse Public License v1.0" |
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Revision: v2.1.22
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* which accompanies this distribution, and is available |
04becd199f91
Revision: v2.1.22
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
04becd199f91
Revision: v2.1.22
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* |
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Revision: v2.1.22
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* Initial Contributors: |
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Revision: v2.1.22
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* Nokia Corporation - initial contribution. |
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Revision: v2.1.22
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* |
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Revision: v2.1.22
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* Contributors: |
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Revision: v2.1.22
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* |
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Revision: v2.1.22
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* Description: Manipulates the equalization settings of a Player. |
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Revision: v2.1.22
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* |
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Revision: v2.1.22
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*/ |
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Revision: v2.1.22
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|
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Revision: v2.1.22
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Revision: v2.1.22
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// INCLUDE FILES |
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Revision: v2.1.22
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#include <jdebug.h> |
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Revision: v2.1.22
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#include "cammsequalizercontrol.h" |
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|
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Revision: v2.1.22
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|
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Revision: v2.1.22
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|
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Revision: v2.1.22
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// ============================ MEMBER FUNCTIONS =============================== |
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|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::NewLC |
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// Two-phased constructor. |
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// ----------------------------------------------------------------------------- |
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Revision: v2.1.22
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CAMMSEqualizerControl* CAMMSEqualizerControl::NewLC(CMMAPlayer* aPlayer) |
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{ |
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CAMMSEqualizerControl* self = |
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new(ELeave) CAMMSEqualizerControl(aPlayer); |
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|
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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|
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return self; |
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} |
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|
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// Destructor |
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CAMMSEqualizerControl::~CAMMSEqualizerControl() |
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{ |
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Revision: v2.1.22
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DEBUG("AMMS::CAMMSEqualizerControl::~CAMMSEqualizerControl"); |
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|
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// Perform DeallocateControl, if the state change has not yet performed it. |
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DeallocateControl(); |
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delete iEqualizerUtility; |
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delete iPresetNames; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::BandLevelL |
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// Gets the gain set for the given equalizer band. |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CAMMSEqualizerControl::BandLevelL(TInt aBand) |
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{ |
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// if aBand is out of range the method must leave with KErrArgument. |
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if (aBand < 0 || aBand > (NumberOfBands() - 1)) |
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{ |
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User::Leave(KErrArgument); |
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} |
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|
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// Returns the band level in mB for the specified band |
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// AudioEqualizerBase: TInt32 BandLevel( TUint8 aBand ) const; |
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return ((CAudioEqualizer*)iAudioEffect)->BandLevel( |
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(TUint8)(aBand + KAMMSBandOffset)); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::MaxBandLevel |
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// Returns the maximum band level supported. |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CAMMSEqualizerControl::MaxBandLevel() |
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{ |
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// Get the dB range in mB for the equalizer. |
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|
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TInt32 minLevel = 0; |
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TInt32 maxLevel = 0; |
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((CAudioEqualizer*)iAudioEffect)->DbLevelLimits(minLevel, maxLevel); |
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|
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return maxLevel; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::MinBandLevel |
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// Returns the minimum band level supported. |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CAMMSEqualizerControl::MinBandLevel() |
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{ |
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// Get the dB range in mB for the equalizer. |
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|
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TInt32 minLevel = 0; |
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TInt32 maxLevel = 0; |
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((CAudioEqualizer*)iAudioEffect)->DbLevelLimits(minLevel, maxLevel); |
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|
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return minLevel; |
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102 |
} |
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103 |
|
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|
104 |
|
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105 |
// ----------------------------------------------------------------------------- |
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|
106 |
// CAMMSEqualizerControl::BandWidth |
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107 |
// Returns the band width in Hz for the specified band. |
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108 |
// ----------------------------------------------------------------------------- |
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109 |
// |
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110 |
TInt CAMMSEqualizerControl::BandWidth(TInt aBand) |
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111 |
{ |
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return ((CAudioEqualizer*)iAudioEffect)->BandWidth( |
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113 |
(TUint8)(aBand + KAMMSBandOffset)); |
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Revision: v2.1.22
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114 |
} |
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115 |
|
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116 |
// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::CenterFrequency |
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118 |
// Returns the center frequency in Hz for a given band. |
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119 |
// ----------------------------------------------------------------------------- |
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120 |
// |
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121 |
TInt CAMMSEqualizerControl::CenterFrequency(TInt aBand) |
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122 |
{ |
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123 |
return ((CAudioEqualizer*)iAudioEffect)->CenterFrequency( |
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124 |
(TUint8)(aBand + KAMMSBandOffset)); |
04becd199f91
Revision: v2.1.22
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125 |
} |
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Revision: v2.1.22
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126 |
|
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127 |
// ----------------------------------------------------------------------------- |
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128 |
// CAMMSEqualizerControl::CrossoverFrequency |
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129 |
// Returns the cross-over frequency between the given frequency. |
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130 |
// ----------------------------------------------------------------------------- |
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131 |
// |
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132 |
TInt CAMMSEqualizerControl::CrossoverFrequency(TInt aBand) |
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133 |
{ |
04becd199f91
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|
134 |
return ((CAudioEqualizer*)iAudioEffect)->CrossoverFrequency( |
04becd199f91
Revision: v2.1.22
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|
135 |
(TUint8)(aBand + KAMMSBandOffset)); |
04becd199f91
Revision: v2.1.22
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|
136 |
} |
04becd199f91
Revision: v2.1.22
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|
137 |
|
04becd199f91
Revision: v2.1.22
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|
138 |
// ----------------------------------------------------------------------------- |
04becd199f91
Revision: v2.1.22
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|
139 |
// CAMMSEqualizerControl::NumberOfBands |
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Revision: v2.1.22
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|
140 |
// Gets the number of frequency bands that the equalizer supports. |
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Revision: v2.1.22
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|
141 |
// ----------------------------------------------------------------------------- |
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Revision: v2.1.22
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|
142 |
// |
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Revision: v2.1.22
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|
143 |
TInt CAMMSEqualizerControl::NumberOfBands() |
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Revision: v2.1.22
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|
144 |
{ |
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Revision: v2.1.22
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|
145 |
// Returns the number of equalizer bands. |
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Revision: v2.1.22
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|
146 |
// AudioEqualizerBase: TUint8 NumberOfBands() const; |
04becd199f91
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|
147 |
return ((CAudioEqualizer*)iAudioEffect)->NumberOfBands(); |
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Revision: v2.1.22
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148 |
} |
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Revision: v2.1.22
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|
149 |
|
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|
150 |
// ----------------------------------------------------------------------------- |
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Revision: v2.1.22
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|
151 |
// CAMMSEqualizerControl::SetBandLevelL |
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Revision: v2.1.22
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152 |
// Sets the given equalizer band to the given gain value. |
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153 |
// ----------------------------------------------------------------------------- |
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154 |
// |
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155 |
void CAMMSEqualizerControl::SetBandLevelL( |
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156 |
TInt aLevel, |
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157 |
TInt aBand) |
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|
158 |
{ |
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|
159 |
DEBUG_INT2("AMMS::CAMMSEqualizerControl::SetBandLevelL: level=%d, band=%d", |
04becd199f91
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|
160 |
aLevel, aBand); |
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Revision: v2.1.22
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|
161 |
|
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|
162 |
// If aBand or aLevel is out of valid range the method must leave |
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|
163 |
// with KErrArgument. |
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|
164 |
if (aBand < 0 || |
04becd199f91
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|
165 |
aBand > (NumberOfBands() - 1) || |
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|
166 |
aLevel < MinBandLevel() || |
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|
167 |
aLevel > MaxBandLevel()) |
04becd199f91
Revision: v2.1.22
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|
168 |
{ |
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|
169 |
User::Leave(KErrArgument); |
04becd199f91
Revision: v2.1.22
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|
170 |
} |
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|
171 |
|
04becd199f91
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|
172 |
// Sets the equalizer band level value in mB, ranging from Min to Max |
04becd199f91
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|
173 |
((CAudioEqualizer*)iAudioEffect)->SetBandLevelL( |
04becd199f91
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|
174 |
(TInt8)(aBand + KAMMSBandOffset), aLevel); |
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Revision: v2.1.22
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|
175 |
|
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|
176 |
ApplySettingsL(); |
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Revision: v2.1.22
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|
177 |
} |
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|
178 |
|
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|
179 |
// ----------------------------------------------------------------------------- |
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|
180 |
// CAMMSEqualizerControl::SetPresetL |
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|
181 |
// Sets the effect according to the given preset. |
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|
182 |
// ----------------------------------------------------------------------------- |
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|
183 |
// |
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|
184 |
void CAMMSEqualizerControl::SetPresetL(const TDesC& aPreset) |
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|
185 |
{ |
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|
186 |
DEBUG_STR("AMMS::CAMMSEqualizerControl::SetPresetL \"%S\"", aPreset); |
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|
187 |
|
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|
188 |
const CDesCArray& presetNames = PresetNamesL(); |
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|
189 |
|
04becd199f91
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|
190 |
TInt presetPosition = 0; |
04becd199f91
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|
191 |
TInt findPreset = presetNames.Find(aPreset, presetPosition); |
04becd199f91
Revision: v2.1.22
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|
192 |
if (findPreset == 0) // Find returns zero, if a matching element is found. |
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Revision: v2.1.22
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|
193 |
{ |
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Revision: v2.1.22
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|
194 |
// This supposes that the indexing of the presets starts at zero. |
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|
195 |
iEqualizerUtility->GetPresetL(presetPosition); |
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|
196 |
|
04becd199f91
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|
197 |
// Set the base class audio effect as the new CAudioEqualizer |
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|
198 |
// that is set with the previous GetPresetL method. |
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|
199 |
iAudioEffect = &(iEqualizerUtility->Equalizer()); |
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|
200 |
iCurrentPreset = presetPosition; |
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|
201 |
|
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|
202 |
DEBUG_STR("AMMS::CAMMSEqualizerControl::SetPresetL \"%S\" GetPresetL OK", |
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203 |
aPreset); |
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} |
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else |
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{ |
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User::Leave(KErrArgument); |
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} |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::PresetNamesL |
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// Gets the available preset names. |
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// ----------------------------------------------------------------------------- |
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// |
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const CDesCArray& CAMMSEqualizerControl::PresetNamesL() |
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{ |
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// Returns an array of all preset names (pre-defined and user-defined). |
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// The pre-defined presets are in the beginning of the list. |
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|
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TArray< TEfAudioEqualizerUtilityPreset > presetNames = |
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iEqualizerUtility->Presets(); |
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|
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// Before appending the preset names, reset the member array |
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iPresetNames->Reset(); |
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for (TInt i = 0; i < presetNames.Count(); i++) |
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227 |
{ |
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iPresetNames->AppendL(presetNames[ i ].iPresetName); |
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} |
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|
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return *iPresetNames; |
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} |
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233 |
|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::PresetL |
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// Gets the current preset. |
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// ----------------------------------------------------------------------------- |
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238 |
// |
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239 |
const TDesC& CAMMSEqualizerControl::PresetL() |
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240 |
{ |
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//if no preset is set, return null |
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if (iCurrentPreset < 0) |
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243 |
{ |
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return KNullDesC; |
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245 |
} |
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246 |
else |
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247 |
{ |
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248 |
// Retrieves a Preset with the given index from the Central Repository |
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249 |
// AudioEqualizerUtility.h: |
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// const TDesC& GetPresetL(TInt aPresetIndex) |
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return iEqualizerUtility->GetPresetL(iCurrentPreset); |
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252 |
} |
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253 |
} |
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|
254 |
|
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255 |
// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::SetEnabledL |
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// Enables/disables the effect. |
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// ----------------------------------------------------------------------------- |
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259 |
// |
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260 |
void CAMMSEqualizerControl::SetEnabledL(TBool aEnable) |
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|
261 |
{ |
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262 |
if (aEnable) |
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|
263 |
{ |
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264 |
// Enable the effect |
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// Instead of using CAudioEffectBase: virtual void EnableL(), |
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// use the derived effect's (=preset's) ApplyL which calls EnableL. |
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|
267 |
DEBUG("AMMS::CAMMSEqualizerControl::SetEnabledL(true), calling ApplyL"); |
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|
268 |
iAudioEffect->ApplyL(); |
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|
269 |
} |
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|
270 |
else |
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|
271 |
{ |
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272 |
// Disable the effect |
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// Instead of using CAudioEffectBase: virtual void DisableL(), |
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// use the utility class DisableEqualizerL, |
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275 |
// which calls DisableL for the correct preset |
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|
276 |
DEBUG("AMMS::CAMMSEqualizerControl::SetEnabledL(false), calling DisableEqualizerL"); |
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|
277 |
iEqualizerUtility->DisableEqualizerL(); |
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|
278 |
} |
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|
279 |
} |
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|
280 |
|
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|
281 |
// ----------------------------------------------------------------------------- |
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|
282 |
// CAMMSEqualizerControl::PrepareControlL |
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|
283 |
// Function which is called after the correct state is set in Player. |
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|
284 |
// ----------------------------------------------------------------------------- |
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|
285 |
// |
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|
286 |
void CAMMSEqualizerControl::PrepareControlL() |
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|
287 |
{ |
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|
288 |
// Perform the action only for the first time, skip if called afterwards |
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|
289 |
if (!iEqualizerUtility) |
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|
290 |
{ |
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|
291 |
DEBUG("AMMS::CAMMSEqualizerControl::PrepareControlL"); |
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|
292 |
|
04becd199f91
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|
293 |
CCustomCommandUtility* customCommandUtility = |
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|
294 |
CreateCustomCommandUtilityL(); |
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|
295 |
|
04becd199f91
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|
296 |
// Effect API takes the ownership of customCommandUtility. |
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|
297 |
iEqualizerUtility = CAudioEqualizerUtility::NewL( |
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|
298 |
customCommandUtility); |
04becd199f91
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|
299 |
|
04becd199f91
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|
300 |
// Set the base class audio effect as CAudioEqualizer, |
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|
301 |
// even the native AudioEqualizerUtility has an empty CAudioEqualizer |
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|
302 |
iAudioEffect = &(iEqualizerUtility->Equalizer()); |
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Revision: v2.1.22
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|
303 |
} |
04becd199f91
Revision: v2.1.22
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|
304 |
} |
04becd199f91
Revision: v2.1.22
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|
305 |
|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::DeallocateControl |
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// Function which is called after the correct state is set in Player. |
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// ----------------------------------------------------------------------------- |
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// |
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void CAMMSEqualizerControl::DeallocateControl() |
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{ |
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if (iEqualizerUtility) |
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{ |
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DEBUG("AMMS::CAMMSEqualizerControl::DeallocateControlL"); |
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|
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// Delete the Effect API class. |
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TRAPD(err, iEqualizerUtility->DisableEqualizerL()); |
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if (err != KErrNone) |
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{ |
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// The only even theoritically possible error code here would be |
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// KErrAccessDenied which is a result from Effect API calling ApplyL |
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// method without having update rights, but since the Utility |
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// class is already created, that situation can be discarded here. |
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} |
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|
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delete iEqualizerUtility; |
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iEqualizerUtility = NULL; |
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} |
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} |
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|
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const TDesC& CAMMSEqualizerControl::ClassName() const |
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{ |
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return KAMMSEqualizerControl; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::ConstructL |
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// Symbian 2nd phase constructor can leave. |
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// ----------------------------------------------------------------------------- |
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void CAMMSEqualizerControl::ConstructL() |
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{ |
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// Create array for preset names |
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iPresetNames = new(ELeave) CDesCArrayFlat(1); |
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|
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// Set current preset to a negative value as it is not set yet |
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iCurrentPreset = -1; |
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|
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CAMMSEffectControl::ConstructL(); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CAMMSEqualizerControl::CAMMSEqualizerControl |
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// C++ default constructor can NOT contain any code, that |
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// might leave. |
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// ----------------------------------------------------------------------------- |
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CAMMSEqualizerControl::CAMMSEqualizerControl(CMMAPlayer* aPlayer) |
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: CAMMSBaseEqualizerControl(aPlayer) |
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{ |
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} |
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|
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// End of File |
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|
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|
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365 |