author | hgs |
Mon, 26 Jul 2010 23:10:35 +0300 | |
changeset 37 | 61b7cc389c7e |
parent 0 | 1bce908db942 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 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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*/ |
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// INCLUDES |
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#ifndef MCCVIDEOSOURCE_H |
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#define MCCVIDEOSOURCE_H |
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#include <e32std.h> |
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#include "mccdatasource.h" |
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#include "mccinternalcodecs.h" |
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class CMccVideoSourceImpl; |
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class CMccFileSourceImpl; |
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class TMccCodecInfo; |
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class MMccCameraHandler; |
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// CLASS DECLARATIONS |
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/** |
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* Helper class to contain user information |
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*/ |
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class TMccVideoSourceUser |
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{ |
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public: |
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TMccVideoSourceUser( MAsyncEventHandler* aEventHandler ) : |
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iEventHandler( aEventHandler ), |
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iCodecInfo(), |
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iReserved1( 0 ), |
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iReserved2( 0 ) |
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{ |
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} |
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public: |
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MAsyncEventHandler* iEventHandler; |
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TMccCodecInfo iCodecInfo; |
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TUint32 iReserved1; |
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TUint32 iReserved2; |
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}; |
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/** |
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* Video source is used to get video data from camera. |
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* |
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*/ |
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class CMccVideoSource: public CMccDataSource |
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{ |
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public: // Methods called internally or by the controller |
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/** |
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* Two-phased constructor. |
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*/ |
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static MDataSource* NewSourceL( TUid aImplementationUid, |
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const TDesC8& aInitData ); |
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void ConstructSourceL ( const TDesC8& aInitData ); |
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CMccVideoSource(); |
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virtual ~CMccVideoSource(); |
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public: // new |
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virtual void SetCameraHandler( MMccCameraHandler& aCameraHandler ); |
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virtual TInt CameraIndex() const; |
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virtual void SetVideoCodecL( const TMccCodecInfo& aVideoCodec ); |
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virtual void GetVideoCodecL( TMccCodecInfo& aVideoCodec ); |
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virtual void GetSupportedVideoCodecsL( RArray<TFourCC>& aVideoTypes ); |
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virtual void SetAudioCodecL( const TMccCodecInfo& aAudioCodec ); |
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virtual void GetAudioCodecL( TMccCodecInfo& aAudioCodec ); |
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virtual void GetSupportedAudioCodecsL( RArray<TFourCC>& aAudioTypes ); |
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virtual void SetAudioEnabledL( TBool aEnabled ); |
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virtual TBool AudioEnabledL() const; |
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virtual void SetGainL( TInt aGain ); |
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virtual TInt GainL() const; |
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virtual TInt MaxGainL() const; |
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public: // From MMccSourceSink |
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virtual TInt AddUser( MAsyncEventHandler* aUser ); |
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virtual void RemoveUser( MAsyncEventHandler* aUser ); |
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virtual void SetCurrentUser( MAsyncEventHandler* aUser ); |
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virtual void UpdateL( const TDesC8& aVal ); |
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virtual void GetParameterL( TUint32 aParam, TDes8& aVal ); |
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virtual void SetParameterL( TUint32 aParam, const TDesC8& aVal ); |
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public: // From MDataSource |
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/** |
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* From MDataSource. Returns the data type as a fourCC code of the data source. |
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* |
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* @since Series 60 3.0 |
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* @param "aMediaId" |
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* This identifies the type of media eg audio or video and the stream id. |
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* Only KUidMediaTypeAudio -mediatype is supported. |
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* @return The fourCC code identifying the source datatype for the specified aMediaId. |
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*/ |
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TFourCC SourceDataTypeCode( TMediaId aMediaId ); |
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/** |
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* From MDataSource. Sets the data type as a fourCC code for the data source |
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* |
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* @since Series 60 3.0 |
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* @param "aSourceFourCC" |
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* This specifies the data type as a fourCC code to set the source to. |
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* |
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* @param "aMediaId" |
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* This identifies the type of media eg audio or video and the stream id. |
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* Only KUidMediaTypeAudio -mediatype is supported. |
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* |
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* @return KErrNone if successful, KErrNotSupported if the source does not support having |
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* it's data type set, otherwise a system wide error code. |
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*/ |
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TInt SetSourceDataTypeCode( TFourCC aCodec, |
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TMediaId aMedia ); |
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/** |
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* From MDataSource. Not used. Leaves with KErrNotSupported. |
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* |
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* @since Series 60 3.0 |
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* @param "aBuffer" |
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* The buffer that has been emptied by a data sink and is now available for reuse |
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* @return None |
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*/ |
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void BufferEmptiedL( CMMFBuffer* aBuffer ); |
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/** |
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* From MDataSource. Method to indicate whether the data source can create a buffer. |
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* |
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* @since Series 60 3.0 |
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* |
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* @return EFalse |
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*/ |
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TBool CanCreateSourceBuffer(); |
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/** |
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* From MDataSource. Not used. Leaves with KErrNotSupported. |
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* |
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* @since Series 60 3.0 |
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* @param "aMediaId" |
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* This identifies the type of media eg audio or video and the stream id. |
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* This parameter is required in cases where the source can supply data |
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* of more than one media type and/or multiple strams of data eg a multimedia file. |
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* |
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* @param "aReference" |
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* This must be written to by the method to indicate whether the created buffer is |
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* a 'reference' buffer. A 'reference' buffer is a buffer that is owned by the source |
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* and should be used in preference to the sink buffer provided the sink buffer |
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* is also not a reference buffer. |
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* . |
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* @return The created buffer |
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*/ |
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CMMFBuffer* CreateSourceBufferL( TMediaId, |
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TBool& aReference ); |
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|
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/** |
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* From MDataSource. Method to 'logon' the data source to the same thread that source will be supplying data in. |
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* |
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* Jitterbuffer for incoming packets and downlink timeout timer are created here. |
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* |
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* @param "aEventHandler" |
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* This is an MAsyncEventHandler to handle asynchronous events that occur during the |
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* transfer of multimedia data. The event handler must be in the same thread as the data transfer |
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* thread - hence the reason it is passed in the SourceThreadLogon as opposed to say the constructor. |
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* |
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* |
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* @return KErrNone if successful, otherwise a system wide error code. |
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*/ |
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TInt SourceThreadLogon( MAsyncEventHandler& aEventHandler ); |
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|
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/** |
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* From MDataSource. Method to 'logoff' the data source from the same thread that source supplies data in. |
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* |
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* Jitterbuffer for incoming packets and downlink timeout timer are deleted. Datasource deletes the |
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* stream(s) and unregisters itself as an observer for the RTP session for incoming RTP and RTCP packets. |
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* |
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* @return None |
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*/ |
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void SourceThreadLogoff(); |
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/** |
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* From MDataSource. Method to 'prime' the data source. |
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* |
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* Datasource is set to primed state. |
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* |
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* @since Series 60 3.0 |
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* @return None |
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*/ |
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void SourcePrimeL(); |
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/** |
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* From MDataSource. Method to 'play' the data source. |
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* |
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* Downlink timeout timer is started and datasource is set to playing state. |
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* |
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* @since Series 60 3.0 |
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* @return None |
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*/ |
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void SourcePlayL(); |
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/** |
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* From MDataSource. Method to 'pause' the data source. |
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* |
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* Downlink timeout timer is stopped and datasource is set to paused state. |
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* |
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* @since Series 60 3.0 |
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* @return None |
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*/ |
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void SourcePauseL(); |
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|
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/** |
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* From MDataSource. Method to 'stop' the data source. |
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* |
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* Downlink timeout timer is stopped and datasource is set to stopped state. |
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* |
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* @since Series 60 3.0 |
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* @return None |
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*/ |
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void SourceStopL(); |
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/** |
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* From MDataSource. Method called by a MDataSink to request the data source to fill aBuffer with data. |
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* |
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* Datasource gets packet from jitterbuffer and forwards it to the payloadformatdecoder |
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* for further processing. Datasource works synchronously; consumers BufferFilledL |
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* is called when RTP packet is got succesfully from jitterbuffer. |
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* |
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* @since Series 60 3.0 |
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* @param "aBuffer" |
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* The buffer that needs filling with data |
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* |
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* @param "aConsumer" |
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* The data sink that consumes the data. The data source needs this to make the BufferFilledL |
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* callback on aConsumer when the data source has completed filling the aBuffer. |
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* |
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* @param "aMediaId" |
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* This identifies the type of media eg audio or video and the stream id. |
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* This parameter is required in cases where the source can supply data |
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* of more than one media type and/or multiple strams of data eg a multimedia file. |
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* @return None |
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*/ |
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void FillBufferL( CMMFBuffer* aBuffer, |
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MDataSink* aConsumer, |
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TMediaId aMediaId ); |
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|
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/** |
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* From MDataSource |
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*/ |
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void NegotiateSourceL( MDataSink& aDataSink ); |
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public: // From MMccRateAdaptationObserver |
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TInt RateAdaptationRequest( const TMccEvent& aInputData, |
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TMccEvent& aOutputData ); |
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private: |
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void AddUserL( MAsyncEventHandler* aUser ); |
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TBool MultipleCodecs() const; |
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void UpdateCurrentUserL(); |
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private: |
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#if ( ( defined(MCC_VIDEO_SOURCE_FOR_EMU) || defined(_lint) ) && !defined(TEST_EUNIT) ) |
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CMccFileSourceImpl* iSourceImpl; |
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#else |
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CMccVideoSourceImpl* iSourceImpl; |
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#endif |
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TUint iCameraIndex; |
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RPointerArray<TMccVideoSourceUser> iUsers; |
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MAsyncEventHandler* iCurrentUser; |
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TUint32 iReserved1; |
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TUint32 iReserved2; |
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private: |
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#ifdef TEST_EUNIT |
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friend class UT_CMccVideoSource; |
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#endif |
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}; |
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// End of file |