author | Tapani Kanerva <tapani.kanerva@nice.fi> |
Tue, 16 Nov 2010 14:11:25 +0200 | |
branch | RCL_3 |
changeset 67 | b35006be8823 |
parent 0 | 40261b775718 |
permissions | -rw-r--r-- |
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// MmfGlblAudioEffectPlugin.h |
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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#ifndef MMFGLBLAUDIOEFFECTPLUGIN_H |
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#define MMFGLBLAUDIOEFFECTPLUGIN_H |
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#include <mmf/common/mmfglblaudioeffect.h> |
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/** |
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@publishedPartner |
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@released |
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@file |
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*/ |
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/** |
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Implementation of CMmfGlobalAudioEffect. |
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This is the base interface for plugins that provide for global effects. It is intended |
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to be exclusively called from CMmfGlobalAudioEffect itself. |
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*/ |
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class MMmfGlobalAudioImpl |
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{ |
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friend class CMmfGlobalAudioEffect; |
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public: |
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/** |
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Release object. |
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Equivalent of destructor - called to request data to be deleted. |
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*/ |
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virtual void Release()=0; |
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protected: |
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/* |
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Provide implementation of CMmfGlobalAudioEffect::Capability() |
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@param aCurrentOnly |
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If true, capabilities are for current situation only - see text |
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@return Capability settings, as given in TCapabilityFlags |
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@see CMmfGlobalAudioEffect::Capability() |
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*/ |
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virtual TUint Capability(TBool aCurrentOnly)=0; |
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/** |
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Provide implementation of CMmfGlobalAudioEffect::RequestNotificationL() |
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@param aEventUid |
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Uid specifying event for which notification is requested |
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@leave KErrNotSupported |
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If Observer passed during construction was NULL. |
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The Uid is not recognised. |
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The feature is simply not supported in this implementation. |
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@see CMmfGlobalAudioEffect::RequestNotificationL() |
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*/ |
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virtual void RequestNotificationL(TUid aEventUid)=0; |
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/** |
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Provide implementation of CMmfGlobalAudioEffect::IsEnabled() |
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@return True if SetEnabledL(ETrue), or similar, has been called on this effect |
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@see CMmfGlobalAudioEffect::IsEnabled() |
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*/ |
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virtual TBool IsEnabled() const=0; |
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/** |
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Provide implementation of CMmfGlobalAudioEffect::IsActive() |
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@return True if the effect is in use |
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@see CMmfGlobalAudioEffect::IsActive() |
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*/ |
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virtual TBool IsActive() const=0; |
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/** |
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Provide implementation of CMmfGlobalAudioEffect::SetEnabledL() |
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@param aValue |
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If true, enables this specific effect. If false, disables it. |
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@see CMmfGlobalAudioEffect::SetEnabledL() |
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*/ |
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virtual void SetEnabledL(TBool aValue)=0; |
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/** |
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Provide implementation of CMmfGlobalAudioEffect::SettingsByUidL() |
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@return The Uid used by SetSettingsByUidL() |
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@leave KErrNotSupported |
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The settings cannot be expressed as a Uid (usually means SetSettingsByUidL() was not the last |
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thing to change them). |
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@see CMmfGlobalAudioEffect::SettingsByUidL() |
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*/ |
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virtual TUid SettingsByUidL() const=0; |
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/** |
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Provide implementation of CMmfGlobalAudioEffect::SetSettingsByUidL() |
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@param aPresetUid |
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Uid representing the preset in question |
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@leave KErrNotSupported |
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This implementation does not support presets for this effect |
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@leave KErrUnknown |
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The value of aUid does not correspond to a known preset |
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@see CMmfGlobalAudioEffect::SetSettingsByUidL() |
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*/ |
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virtual void SetSettingsByUidL(TUid aPresetUid)=0; |
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113 |
|
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/** |
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115 |
Provide implementation of CMmfGlobalAudioEffect::SettingsByDesL() |
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@return HBufC8 containing current settings |
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@leave KErrNotSupported |
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This implementation does not support expressing settings in descriptor form |
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@see CMmfGlobalAudioEffect::SettingsByDesL() |
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*/ |
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virtual HBufC8* SettingsByDesL() const=0; |
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122 |
|
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123 |
/** |
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124 |
Provide implementation of CMmfGlobalAudioEffect::SetSettingsByDesL() |
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@param aParam |
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Descriptor value to use |
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@leave KErrNotSupported |
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This implementation does not support expressing settings in descriptor form |
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@leave KErrCorrupt |
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Value in descriptor does not correspond to known format |
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@see CMmfGlobalAudioEffect::SetSettingsByDesL() |
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*/ |
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virtual void SetSettingsByDesL(const TDesC8& aParam)=0; |
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134 |
|
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135 |
/** |
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136 |
Provide implementation of CMmfGlobalAudioEffect::KnownPresetsL() |
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@see CMmfGlobalAudioEffect::KnownPresetsL() |
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@leave KErrNotSupported |
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139 |
This feature may not be supported in some circumstances |
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140 |
*/ |
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virtual MMmfGlobalAudioPresetList* KnownPresetsL()=0; |
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142 |
|
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143 |
/** |
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144 |
Provide implementation of CMmfGlobalAudioEffect::ExtractValuesL() |
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Extract the settings into a struct |
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Note that the implementation should check the size of the supplied package buffer, to check |
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it is as expected. |
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@param aPackageBuf |
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149 |
This should be a package buffer wrapping the appropriate class/struct, and will be |
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specific to a particular CMmfGlobalAudioEffect derivitive. |
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@leave KErrNotSupported |
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This will only be supported by some child classes, and even then will not |
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be supported by all implementations. |
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@leave KErrArgument |
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Passed package buffer is not the expected size. |
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@see CMmfGlobalAudioEffect::ExtractValuesL() |
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157 |
*/ |
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virtual void ExtractValuesL(TDes8& aPackageBuf)=0; |
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159 |
|
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160 |
/** |
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161 |
Provide implementation of CMmfGlobalAudioEffect::SetByValuesL(). |
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Note that the implementation should check the size of the supplied package buffer, to check |
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it is as expected. |
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@param aPackageBuf |
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This should be a package buffer wrapping the appropriate class/struct, and will be |
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specific to a particular CMmfGlobalAudioEffect derivitive. |
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@leave KErrNotSupported |
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This will only be supported by some child classes, and even then will not |
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be supported by all implementations. |
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@leave KErrArgument |
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Passed package buffer is not the expected size, or individual values are out of range |
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@see CMmfGlobalAudioEffect::SetByValuesL() |
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173 |
*/ |
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virtual void SetByValuesL(const TDesC8& aPackageBuf)=0; |
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175 |
|
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176 |
/** |
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Request extension feature. |
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This is intended to provide additional features, should a particular global effect |
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need it. In typical use, the global effect will make a call to this interface on |
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construction. Repeatedly calling this interface will have no additional effect - |
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if the interface has already been setup internally, then no further activity will |
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take place. |
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@param aInterfaceUid |
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Used to indicate which interface is required. |
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@return Standard error code. KErrNotSupported is used to indicate that the particular |
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plugin is used. |
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*/ |
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virtual TInt CreateCustomInterface(TUid aInterfaceUid)=0; |
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189 |
|
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190 |
|
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191 |
/** |
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Return previously created extension. |
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This returns a custom interface, used to provide additional features for a certain |
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global effect. This should only be used if CreateCustomInterface() has already |
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been called for the same UID value. This means that any construction for that interface |
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has already been called, and thus this call cannot fail. Typically the returned class |
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will be another Mixin.No transfer of ownership is implied. |
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198 |
|
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@param aInterfaceUid |
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Used to indicate which interface is required. |
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@return The requested interface, or NULL if not known. |
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@see CreateCustomInterface() |
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*/ |
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virtual TAny* CustomInterface(TUid aInterfaceUid)=0; |
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205 |
|
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206 |
|
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207 |
/** |
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Pass destructor key. |
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Called on construction so plugin takes responsibility to call REComSession::DestroyedImplementation() |
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@param aDestructorKey |
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The Uid returned by REComSession::CreateImplementationL() or similar |
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*/ |
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virtual void PassDestructorKey(TUid aDestructorKey)=0; |
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/** |
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Complete construction. |
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Pass additional values from the construction phase, used subsequently by the plugin. |
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@param aParent |
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The CMmfGlobalAudioEffect that created this object |
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@param aObserver |
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Observer as passed to CMmfGlobalAudioEffect::BaseConstructL() |
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@see CMmfGlobalAudioEffect::BaseConstructL() |
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*/ |
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virtual void CompleteConstructL(CMmfGlobalAudioEffect* aParent, MMmfGlobalAudioEffectObserver* aObserver)=0; |
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private: |
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static MMmfGlobalAudioImpl* NewL(TUid aImplementationUid, |
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CMmfGlobalAudioEffect* aParent, |
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MMmfGlobalAudioEffectObserver* aObserver); |
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}; |
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#endif // MMFGLBLAUDIOEFFECTPLUGIN_ |