author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:08:46 +0200 | |
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child 18 | 2eb3b066cc7d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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:TMSGainEffect class |
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* |
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*/ |
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#ifndef TMS_GAIN_EFFECT_H |
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#define TMS_GAIN_EFFECT_H |
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#include <tms.h> |
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#include <tmseffect.h> |
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namespace TMS { |
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// FORWARD DECLARATIONS |
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class TMSGainEffectBody; |
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class TMSEffectObserver; |
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/** |
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* TMSGainEffect class |
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* |
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* This class provides microphone gain level control in the stream scope. |
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* |
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* @lib tmsapi.lib |
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* |
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*/ |
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class TMSGainEffect : public TMSEffect |
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{ |
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public: |
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/** |
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* Destructor |
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*/ |
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IMPORT_C virtual ~TMSGainEffect(); |
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|
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/** |
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* Add client as an observer to events generated by this object. |
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* |
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* This function can be called at any time. It is recommended adding |
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* observer before calling any functions on the Effect. Otherwise, the |
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* observer may miss a callback. |
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* |
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* A reference to the obsrvr is stored in the effect. EffectsEvent callback |
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* will be called when an effect event occurs. When the effect instance is |
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* deleted, all TMSEffectObserver references are automatically released. |
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* The ownership of the obsrvr is still maintained by the client. Should |
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* the client need to delete the obsrvr before deleting the effect, it |
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* should remove the obsrvr reference from the effect by calling |
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* RemoveObserver() function. |
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* |
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* @param obsrvr |
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* Listener to be added to the effect. |
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* |
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* @param user_data |
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* Any user data passed to the function. |
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* |
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* @return |
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* TMS_RESULT_SUCCESS if the obsrvr is successfully added to the list. |
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* TMS_RESULT_ALREADY_EXIST if the obsrvr is already in the list. |
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* |
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*/ |
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IMPORT_C gint AddObserver(TMSEffectObserver& obsrvr, gpointer user_data); |
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/** |
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* Remove a client observer from this Effect. |
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* |
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* This function can be called at any time. |
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* |
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* @param obsrvr |
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* The listener to remove. |
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* |
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* @return |
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* TMS_RESULT_SUCCESS if the obsrvr is removed successfully from list. |
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* TMS_RESULT_DOES_NOT_EXIST if obsrvr is not already in the list. |
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* |
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*/ |
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IMPORT_C gint RemoveObserver(TMSEffectObserver& obsrvr); |
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/** |
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* Set mic gain level. The gain level should not be higher than |
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* the value returned by GetMaxLevel(). |
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* |
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* @param level |
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* Gain level to be set. |
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* |
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* @return |
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* TMS_RESULT_SUCCESS if the operation was successful. |
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* |
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*/ |
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IMPORT_C gint SetLevel(const guint level); |
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/** |
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* Return mic gain level. |
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* |
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* @param level |
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* Current mic gain level. |
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* |
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* @return |
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* TMS_RESULT_SUCCESS if the operation was successful. |
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* |
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*/ |
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IMPORT_C gint GetLevel(guint& level); |
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|
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/** |
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* Return max microphone gain level supported by the device. |
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* |
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* @param level |
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* Max gain level. |
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* |
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* @return |
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* TMS_RESULT_SUCCESS if the operation was successful. |
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* |
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*/ |
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IMPORT_C gint GetMaxLevel(guint& level); |
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|
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/** |
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* Returns type of the effect. |
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* |
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* This function can be called at any time. |
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* |
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* @param effecttype |
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* Variable that contains the effect type on return. |
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* |
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* @return |
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* TMS_RESULT_SUCCESS if the operation was successful. |
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* |
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*/ |
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IMPORT_C virtual gint GetType(TMSEffectType& effecttype); |
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|
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protected: |
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/** |
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* Constructor |
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*/ |
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IMPORT_C TMSGainEffect(); |
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|
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protected: |
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TMSGainEffectBody *iBody; |
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}; |
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|
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} //namespace TMS |
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|
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#endif //TMS_GAIN_EFFECT_H |