author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:08:46 +0200 | |
changeset 0 | 71ca22bcf22a |
child 12 | 2eb3b066cc7d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004 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: This file contains the base class from which specific audio |
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* input classes are derived. This class encapsulates common |
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* behavior for all audio inputs. An audio input class serves as |
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* the interface between the controller and the lower-level sound |
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* gathering interface. |
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* |
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*/ |
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#ifndef CADVANCEDAUDIOINPUT_H |
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#define CADVANCEDAUDIOINPUT_H |
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|
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// INCLUDES |
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#include <e32base.h> |
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//#include <e32std.h> |
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//#include <MmfControllerFrameworkBase.h> |
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//#include <MmfControllerFramework.h> |
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//#include <MmfBase.h> |
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//#include <MmfPanicCodes.h> |
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#include "AdvancedAudioEncoder.h" |
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// CLASS DECLARATION |
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|
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/** |
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* Mixin observer class to define an object capable of handling a callback from |
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* AdvancedAudioInput. |
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* |
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* @lib AdvancedAudioInput.lib |
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* @since 3.0 |
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*/ |
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class MAdvancedAudioInputObserver |
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{ |
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public: |
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/** |
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* Callback function from CDevSoundAudioInput when the given buffer needs to |
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* be emptied (written to external storage) |
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* @param aBuffer data buffer to be emptied |
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* @return errCode KErrNone (0) |
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*/ |
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virtual TInt EmptyBufferL( CMMFBuffer* aBuffer ) = 0; |
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|
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/** |
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* Callback function from CDevSoundAudioInput to indicate recording is completed |
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* @param none |
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* @return void |
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*/ |
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virtual void RecordComplete() = 0; |
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/** |
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* Callback function from CDevSoundAudioInput to handle specified event |
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* @param aEvent the event to be handled |
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* @return void |
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*/ |
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virtual void SendEvent( const TMMFEvent& aEvent ) = 0; |
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}; |
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/** |
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* This is the base class for all audio input classes used for recording. |
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* It contains common behaviour for all audio Inputs. The audio Input class |
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* provides the interface between the Controller and audio input device. |
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* |
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* @lib AdvancedAudioController.lib |
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* @since 3.0 |
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*/ |
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class CAdvancedAudioInput : public CBase, |
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public MAdvancedAudioEncoderObserver |
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{ |
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public: // New functions |
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/** |
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* Prepares DevSound Audio Input for recording |
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* @since 3.0 |
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* @param none |
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* @return none |
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*/ |
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IMPORT_C virtual void PrimeL() = 0; |
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/** |
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* Handles request to pause recording. Sends pause command to DevSound. |
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* @since 3.0 |
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* @param none |
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* @return none |
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*/ |
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IMPORT_C virtual void PauseL() = 0; |
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/** |
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* Handles request to start recording. Configures and initializes DevSound and |
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* sends first buffer of audio data to DevSound, |
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* @since 3.0 |
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* @param none |
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* @return none |
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*/ |
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IMPORT_C virtual void RecordL( TAny* aBuffer ) = 0; |
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|
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/** |
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* Handles request to stop recording. Sends stop command to DevSound. |
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* @since 3.0 |
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* @param none |
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* @return none |
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*/ |
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IMPORT_C virtual void StopL() = 0; |
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|
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/** |
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* Handles request to set the maximum gain. The new value is sent to DevSound. |
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* @since 3.0 |
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* @param none |
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* @return the maximum gain value |
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*/ |
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IMPORT_C virtual TInt MaxGainL() = 0; |
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|
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/** |
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* Handles request to set gain. The new value is sent to DevSound. |
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* @since 3.0 |
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* @param @param aGain new gain value |
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* @return void |
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*/ |
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IMPORT_C virtual void SetGainL( TInt aGain ) = 0; |
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|
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/** |
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* Handles request to get the current gain. The current gain is obtained from DevSound. |
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* @since 3.0 |
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* @param void |
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* @return the current gain value |
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*/ |
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IMPORT_C virtual TInt GainL() = 0; |
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|
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/** |
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* Handles request to get all configured sampling rates from DevSound. |
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* This is a request for all sampling rates that DevSound is currently |
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* configured with. |
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* @since 3.0 |
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* @param aRates array to hold the retrieved sampling rates |
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* @return void |
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*/ |
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IMPORT_C virtual void ConfigRatesL( RArray<TUint>& aRates ) = 0; |
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|
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/** |
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* Handles request to get all configured channels from DevSound. |
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* This is a request for all channels that DevSound is currently |
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* configured with. |
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* @since 3.0 |
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* @param aChannels array to hold the retrieved channels |
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* @return void |
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*/ |
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IMPORT_C virtual void ConfigChannelsL( RArray<TUint>& aChannels ) = 0; |
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|
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/** |
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* Handles request to get all configured data types (FourCC) from DevSound. |
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* This is a request for all data types that DevSound is currently |
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* configured with. |
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* @since 3.0 |
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* @param aDataTypes array to hold the retrieved data types |
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* @return void |
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*/ |
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IMPORT_C virtual void ConfigDataTypesL( RArray<TFourCC>& aDataTypes ) = 0; |
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|
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/** |
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* Handles request to get all capablities sampling rates from DevSound. |
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* This contains all sampling rates DevSound is capable of supporting |
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* @since 3.0 |
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* @param aRates array to hold the retrieved sampling rates |
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* @return void |
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*/ |
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IMPORT_C virtual void CapabilitiesRatesL( RArray<TUint>& aRates ) = 0; |
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|
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/** |
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* Handles request to get all capabilities channels from DevSound. |
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* This is a request for all channels that DevSound is capable of |
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* supporting. |
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* @since 3.0 |
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* @param aChannels array to hold the retrieved channels |
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* @return void |
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*/ |
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IMPORT_C virtual void CapabilitiesChannelsL( RArray<TUint>& aChannels ) = 0; |
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189 |
|
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/** |
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* Handles request to get all capabilities data types (FourCC) from DevSound. |
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* This is a request for all data types that DevSound is capable of |
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* supporting. |
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* @since 3.0 |
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* @param aDataTypes array to hold the retrieved channels |
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* @return void |
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*/ |
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IMPORT_C virtual void CapabilitiesDataTypesL( RArray<TFourCC>& aDataTypes ) = 0; |
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|
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/** |
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* |
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* Handles request to calculate current record position in terms to micro seconds |
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* @since 3.0 |
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* @param none |
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* @return Current position in microseconds |
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*/ |
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IMPORT_C virtual TInt64 CalculateAudioInputPositionL() const = 0; |
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|
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/** |
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* Handles request to configure DevSound with the given parameters. |
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* @since 3.0 |
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* @param aSampleRate recording sampling rate |
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* @param aNumChannel required number of channels (mono/stereo indication) |
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* @param aFourCC FourCC of required recording format |
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* @param aCodecConfigData specific codec configuration data |
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* @return void |
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* |
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*/ |
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IMPORT_C virtual void ConfigureL( TUint aSampleRate, TUint aNumChannel, TFourCC aFourCC, |
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const RArray<TInt>& aCodecConfigData ) = 0; |
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/** |
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* Sets the Encoder instance to be used by the audio input. |
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* @since 3.0 |
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* @param aEncoder Encoder instance |
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* @return void |
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*/ |
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IMPORT_C virtual void SetEncoder( CAdvancedAudioEncoder* aEncoder ) = 0; |
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/** |
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* Sets the bit rate to be used by the audio input. |
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* @since 3.0 |
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* @param aBitRate recording bit rate |
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* @param aCodecConfigData specific codec configuration data |
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* @return void |
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*/ |
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IMPORT_C virtual void SetBitRateL( TUint aBitRate, const RArray<TInt>& aCodecConfigData ) = 0; |
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protected: // Data |
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// pointer to AdvancedAudioInput observer |
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MAdvancedAudioInputObserver* iObserver; |
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// pointer to an audio encoder |
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CAdvancedAudioEncoder* iAdvancedAudioEncoder; |
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}; |
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#endif // CADVANCEDAUDIOINPUT_H |