/*
* Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description: Writes RTP payload format containing G711 data.
*
*/
#ifndef G711PAYLOADFORMATWRITE_H
#define G711PAYLOADFORMATWRITE_H
// INCLUDES
#include <e32base.h>
#include "formatstatemachine.h"
#include "mccinternalcodecs.h"
// FORWARD DECLARATIONS
class MMccRtpDataSink;
class CMccRtpMediaClock;
// CLASS DECLARATION
/**
* Packetizes RTP payload containing G711 data.
*
* @lib MccG711PlFormat.dll
* @since Series 60 3.0
*/
class CG711PayloadFormatWrite : public CPayloadFormatWrite, public MPayloadFormatWrite
{
public: // Constructors and destructor
/**
* Two-phased constructor.
* @param aSource Data source configuration parameters
*/
static CG711PayloadFormatWrite* NewL( MDataSink* aSink );
/**
* Destructor.
*/
virtual ~CG711PayloadFormatWrite();
public: // New functions
/**
* Configures payload format with format spesific parameters.
* Leaves with KErrArgument if parameters are invalid.
*
* @since Series 60 3.0
* @param aConfigParams Configuration parameters
* @return void
*/
virtual void ConfigurePayloadFormatL( const TDesC8& aConfigParams,
CMccRtpMediaClock& aClock );
public: // From MPayloadFormatWrite
/**
* Empty the source buffer by formatting the G.711 frames into RTP payload.
* Source buffer is given in "iBuffer".
* Called by the state machine.
*
* @since Series 60 3.0
* @param None
* @return void
*/
void EmptySourceBufferL();
/**
* Handle the event that source buffer has been emptied.
* Source buffer is given in "iBuffer".
* Called by the state machine.
*
* @since Series 60 3.0
* @param None
* @return void
*/
void SourceBufferEmptiedL();
public: // From CMMFFormatEncode
/**
* Funtion to return time interval for the complete frame
*
* @param aMediaType KUidMediaTypeAudio or KUidMediaTypeVideo
*
* @return time interval in micro seconds
*/
TTimeIntervalMicroSeconds FrameTimeInterval( TMediaId aMediaType ) const;
/** *** NOT SUPPORTED ***
* Function to return the clip duration
*
* @param aMediaType KUidMediaTypeAudio or KUidMediaTypeVideo
*
* @return clip duration in micro seconds
*/
TTimeIntervalMicroSeconds Duration( TMediaId aMediaType ) const;
/**
* Create a sink buffer for the given media
*
* @param aMediaId contains the media type KUidMediaTypeAudio or
* KUidMediaTypeVideo
* @param aReference value of False is returned to caller if sink
* buffer is created
* @return Pointer to sink buffer created
*/
CMMFBuffer* CreateSinkBufferL( TMediaId aMediaId,
TBool& aReference );
/**
* Return the sink four CC code for the given media
*
* @param aMediaId contains the media type KUidMediaTypeAudio or
* KUidMediaTypeVideo
* @return FourCC code for the mediaId
*/
TFourCC SinkDataTypeCode( TMediaId aMediaId );
/**
* Set the sink data type to the given four CC code for the given media
*
* @param aSourceFourCC fourCC code
* @param aMediaId contains the media type KUidMediaTypeAudio or
* KUidMediaTypeVideo
* @return error code KErrNotSupported if invalid media
* ID, else return KErrNone
*/
TInt SetSinkDataTypeCode( TFourCC aSinkFourCC,
TMediaId aMediaId );
/**
* Log in to the sink thread - this funtion merely passes the command to
* its sink clip data source object. The sink clip object will handle
* the thread log on procedures.
*
* @param aEventHandler address of event handler
*
* @return error code returned by source clip
*/
TInt SinkThreadLogon( MAsyncEventHandler& aEventHandler );
/**
* Log out of the sink thread - this funtion merely passes the command to
* its sink clip data source object. The sink clip object will handle
* the thread log off procedures.
*
* @param
*
* @return
*/
void SinkThreadLogoff();
/**
* Empty the given source buffer.
*
* @param aBuffer data buffer containing G.711 frames
* @param aSupplier data source pointer
* @param aMediaId contains the media type KUidMediaTypeAudio or
* KUidMediaTypeVideo
* @return
*/
void EmptyBufferL( CMMFBuffer* aBuffer,
MDataSource* aSupplier,
TMediaId aMediaId );
/**
* Called after the data buffer is written. Update the number of bytes
* written and the current write position for the next write operation.
*
* @param aBuffer data buffer emptied
*
* @return
*/
void BufferEmptiedL( CMMFBuffer* aBuffer );
/**
* Accessor funtion to return the number of channels
*
* @param
*
* @return Number of channels
*/
TUint NumChannels();
/**
* Accessor funtion to return the sampling rate
*
* @param
*
* @return Sampling rate
*/
TUint SampleRate();
/**
* Set the samplerate to the given value.
*
* @param aSampleRate
*
* @return error code KErrNotSupported if invalid samplerate, else
* return KErrNone
*/
TInt SetSampleRate( TUint aSampleRate );
public: // From MDataSink
/**
* From MDataSink Primes the source.
* @since
* @param
* @return
*/
void SinkPrimeL();
/**
* From MDataSink Plays the source.
* @since
* @param
* @return
*/
void SinkPlayL();
/**
* From MDataSink Pauses the source.
* @since
* @param
* @return
*/
void SinkPauseL();
/**
* From MDataSink Stops the source.
* @since
* @param
* @return
*/
void SinkStopL();
private: // New functions
/**
* Prepare packet header and deliver the packet to the datasink.
* @since Series 60 3.0
* @param aPayload Payload to deliver to the datasink.
* @return
*/
void DeliverPacketL( CMMFDataBuffer& aPayload );
/**
* Create a sink buffer of the given size.
*
* @param aSize size of sink buffer to create
*
* @return Pointer to sink buffer created
*/
CMMFDataBuffer* CreateSinkBufferOfSizeL( TUint aSize );
/**
* Update payload format with format spesific parameters.
* Leaves with KErrArgument if parameters are invalid.
*
* @since Series 60 3.0
* @param aCodecInfo Configuration parameters
* @return void
*/
void UpdateConfigurationL( TMccCodecInfo& aCodecInfo );
private:
/**
* C++ default constructor.
*/
CG711PayloadFormatWrite ();
/**
* By default Symbian 2nd phase constructor is private.
*
* @param aConf Decoder Configuration params
*/
void ConstructL( MDataSink* aSource );
private: // Data
// FourCC
TFourCC iFourCC;
// Format encoding state machine
CFormatEncodeStateMachine* iStateMachine;
// Pointer to source data buffer, passed from DataPath
CMMFDataBuffer* iSourceBuffer;
// Sink buffer to hold G711/RTP payload
CMMFDataBuffer* iSinkBuffer;
// Flag to indicate whether to set MARK field to be 1 (the first
// packet in a talk spurt should have MARK field set)
TBool iFirstPacketFinished;
// Indicates are we sending comfort noise payload
TBool iCNModeON;
// Data sink capable to receive RTP data
MMccRtpDataSink* iRtpDataSink;
// Parameters relating to RTP data encoding
TMccCodecInfo iCInfo;
// Rtp Sink
TBool iIsRtpSink;
// Key for Rtp media clock
TUint32 iKey;
/**
* Rtp media clock instance
* Not own.
*/
CMccRtpMediaClock* iRtpMediaClock;
private: // Friend classes
#ifdef TEST_EUNIT
// For EUnit test cases
friend class UT_CG711PayloadFormatWrite;
#endif
};
#endif //G711PAYLOADFORMATWRITE_H
// End of File