author | William Roberts <williamr@symbian.org> |
Thu, 22 Jul 2010 16:37:27 +0100 | |
branch | GCC_SURGE |
changeset 36 | e07c9cb4153d |
parent 0 | 1bce908db942 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004-2007 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: Writes RTP payload format containing ILBC data. |
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* |
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*/ |
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#ifndef ILBCPAYLOADFORMATWRITE_H |
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#define ILBCPAYLOADFORMATWRITE_H |
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// INCLUDES |
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#include <e32base.h> |
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#include <mmf/server/mmfformat.h> |
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#include <mmf/server/mmfdatabuffer.h> |
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#include "rtpheader.h" |
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#include "formatstatemachine.h" |
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#include "mccinternalcodecs.h" |
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// FORWARD DECLARATIONS |
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class MMccRtpDataSink; |
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class CMccRtpMediaClock; |
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// CLASS DECLARATION |
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/** |
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* Packetizes RTP payload containing ILBC data. |
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* |
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* @lib Mccilbcplformat.dll |
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* @since Series 60 3.0 |
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*/ |
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class CIlbcPayloadFormatWrite : public CPayloadFormatWrite, |
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public MAsyncEventHandler, |
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public MPayloadFormatWrite |
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{ |
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public: // Constructors and destructor |
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/** |
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* Two-phased constructor. |
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* @param aSource Data source configuration parameters |
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*/ |
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static CIlbcPayloadFormatWrite* NewL( MDataSink* aSink ); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CIlbcPayloadFormatWrite(); |
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public: // New functions |
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/** |
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* Configures payload format with format spesific parameters. |
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* Leaves with KErrArgument if parameters are invalid. |
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* |
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* @since Series 60 3.0 |
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* @param aConfigParams Configuration parameters |
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* @return void |
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*/ |
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virtual void ConfigurePayloadFormatL( const TDesC8& aConfigParams, |
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CMccRtpMediaClock& aClock ); |
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public: // From MPayloadFormatWrite |
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/** |
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* Empty the source buffer by formatting the iLBC frames into RTP payload. |
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* Source buffer is given in "iBuffer". |
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* Called by the state machine. |
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* |
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* @since Series 60 3.0 |
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* @param None |
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* @return void |
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*/ |
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void EmptySourceBufferL(); |
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/** |
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* Handle the event that source buffer has been emptied. |
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* Source buffer is given in "iBuffer". |
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* Called by the state machine. |
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* |
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* @since Series 60 3.0 |
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* @param None |
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* @return void |
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*/ |
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void SourceBufferEmptiedL(); |
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public: // From CMMFFormatEncode |
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/** |
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* Funtion to return time interval for the complete frame |
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* |
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* @param aMediaType KUidMediaTypeAudio or KUidMediaTypeVideo |
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* |
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* @return time interval in micro seconds |
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*/ |
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TTimeIntervalMicroSeconds FrameTimeInterval( TMediaId aMediaType ) const; |
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/** *** NOT SUPPORTED *** |
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* Function to return the clip duration |
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* |
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* @param aMediaType KUidMediaTypeAudio or KUidMediaTypeVideo |
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* |
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* @return clip duration in micro seconds |
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*/ |
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TTimeIntervalMicroSeconds Duration( TMediaId aMediaType ) const; |
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|
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/** |
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* Create a sink buffer for the given media |
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* |
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* @param aMediaId contains the media type KUidMediaTypeAudio or |
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* KUidMediaTypeVideo |
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* @param aReference value of False is returned to caller if sink |
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* buffer is created |
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* @return Pointer to sink buffer created |
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*/ |
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CMMFBuffer* CreateSinkBufferL( TMediaId aMediaId, |
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TBool& aReference ); |
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|
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/** |
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* Return the sink four CC code for the given media |
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* |
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* @param aMediaId contains the media type KUidMediaTypeAudio or |
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* KUidMediaTypeVideo |
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* @return FourCC code for the mediaId |
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*/ |
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TFourCC SinkDataTypeCode( TMediaId aMediaId ); |
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|
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/** |
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* Set the sink data type to the given four CC code for the given media |
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* |
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* @param aSourceFourCC fourCC code |
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* @param aMediaId contains the media type KUidMediaTypeAudio or |
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* KUidMediaTypeVideo |
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* @return error code KErrNotSupported if invalid media |
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* ID, else return KErrNone |
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*/ |
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TInt SetSinkDataTypeCode( TFourCC aSinkFourCC, |
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TMediaId aMediaId ); |
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|
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/** |
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* Log in to the sink thread - this funtion merely passes the command to |
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* its sink clip data source object. The sink clip object will handle |
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* the thread log on procedures. |
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* |
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* @param aEventHandler address of event handler |
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* |
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* @return error code returned by source clip |
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*/ |
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TInt SinkThreadLogon( MAsyncEventHandler& aEventHandler ); |
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|
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/** |
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* Log out of the sink thread - this funtion merely passes the command to |
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* its sink clip data source object. The sink clip object will handle |
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* the thread log off procedures. |
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* |
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* @param |
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* |
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* @return |
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*/ |
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void SinkThreadLogoff(); |
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|
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/** |
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* Empty the given source buffer. |
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* |
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* @param aBuffer data buffer containing G.711 frames |
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* @param aSupplier data source pointer |
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* @param aMediaId contains the media type KUidMediaTypeAudio or |
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* KUidMediaTypeVideo |
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* @return |
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*/ |
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void EmptyBufferL( CMMFBuffer* aBuffer, |
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MDataSource* aSupplier, |
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TMediaId aMediaId ); |
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|
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/** |
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* Called after the data buffer is written. Update the number of bytes |
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* written and the current write position for the next write operation. |
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* |
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* @param aBuffer data buffer emptied |
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* |
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* @return |
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*/ |
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void BufferEmptiedL( CMMFBuffer* aBuffer ); |
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|
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/** |
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* Accessor funtion to return the number of channels |
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* |
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* @param |
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* |
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* @return Number of channels |
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*/ |
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TUint NumChannels(); |
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|
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/** |
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* Accessor funtion to return the sampling rate |
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* |
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* @param |
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* |
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* @return Sampling rate |
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*/ |
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TUint SampleRate(); |
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|
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/** |
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* Set the samplerate to the given value. |
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* |
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* @param aSampleRate |
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* |
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* @return error code KErrNotSupported if invalid samplerate, else |
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* return KErrNone |
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*/ |
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TInt SetSampleRate( TUint aSampleRate ); |
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/** |
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* No implementation required for encoder. |
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* |
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* @param Not used |
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* |
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* @return KErrNone |
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*/ |
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virtual TInt SendEventToClient( const TMMFEvent& /*aEvent*/ ) |
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{return KErrNone;} |
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public: // From MDataSink |
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/** |
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* From MDataSink Primes the source. |
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* @since |
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* @param |
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* @return |
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*/ |
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void SinkPrimeL(); |
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|
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/** |
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* From MDataSink Plays the source. |
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* @since |
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* @param |
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* @return |
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*/ |
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void SinkPlayL(); |
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|
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/** |
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* From MDataSink Pauses the source. |
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* @since |
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* @param |
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* @return |
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*/ |
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void SinkPauseL(); |
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|
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/** |
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* From MDataSink Stops the source. |
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* @since |
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* @param |
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* @return |
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*/ |
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void SinkStopL(); |
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private: // New functions |
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/** |
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* Prepare packet header and deliver the packet to the datasink. |
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* @since Series 60 3.0 |
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* @param aPayload Payload to deliver to the datasink. |
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* @return |
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*/ |
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void DeliverPacketL( CMMFDataBuffer& aPayload ); |
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|
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/** |
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* Create a sink buffer of the given size. |
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* |
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* @param aSize size of sink buffer to create |
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* |
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* @return Pointer to sink buffer created |
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*/ |
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CMMFDataBuffer* CreateSinkBufferOfSizeL( TUint aSize ); |
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/** |
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* Update payload format with format spesific parameters. |
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* |
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* @since Series 60 3.0 |
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* @param aCodecInfo Codec info |
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* @return void |
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*/ |
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void UpdateConfigurationL( const TMccCodecInfo& aCodecInfo ); |
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|
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/** |
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* Configures the formatter based on input parameters. |
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* |
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* @since Series 60 3.0 |
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* @param aCodecInfo Codec info |
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* @return void |
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*/ |
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void DoConfigurePayloadFormatL( const TMccCodecInfo& aCodecInfo ); |
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private: |
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/** |
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* C++ default constructor. |
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*/ |
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CIlbcPayloadFormatWrite(); |
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|
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/** |
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* By default Symbian 2nd phase constructor is private. |
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* |
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* @param aConf Decoder Configuration params |
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*/ |
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void ConstructL( MDataSink* aSource ); |
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|
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private: // Data |
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|
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// FourCC |
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TFourCC iFourCC; |
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|
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// Format encoding state machine |
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CFormatEncodeStateMachine* iStateMachine; |
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// Pointer to source data buffer, passed from MCPDataPath |
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CMMFDataBuffer* iSourceBuffer; |
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// Sink buffer to hold Ilbc/RTP payload |
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CMMFDataBuffer* iSinkBuffer; |
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// RTP header used for sending RTP packet |
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TRtpSendHeader iRtpSendHeader; |
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// Frames per RTP packet (packetization rate) |
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TInt iFramesPerPacket; |
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// Counter for determining are all frames/samples got for RTP packet |
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TInt iFrameIndex; |
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// Frame time interval in micro seconds |
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TTimeIntervalMicroSeconds iFrameTimeInterval; |
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// Current media type |
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TMediaId iMediaId; |
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// Flag to indicate whether to set MARK field to be 1 (the first |
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// packet in a talk spurt should have MARK field set) |
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TBool iFirstPacketFinished; |
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// Indicates are we sending comfort noise payload |
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TBool iCNModeON; |
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// Data sink capable to receive RTP data |
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MMccRtpDataSink* iRtpDataSink; |
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// Parameters relating to RTP data encoding |
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TMccCodecInfo iCInfo; |
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// Boolen for rtp sink |
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TBool iIsRtpSink; |
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// Key for Rtp media clock |
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TUint32 iKey; |
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/** |
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* Rtp media clock instance |
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* Not own. |
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*/ |
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CMccRtpMediaClock* iRtpMediaClock; |
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// Friend class for testing |
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#ifdef TEST_EUNIT |
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friend class UT_CIlbcPayloadFormatWrite; |
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#endif |
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}; |
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#endif //ILBCPAYLOADFORMATWRITE_H |