--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/multimediacommscontroller/mmccMsrppayloadformat/inc/msrppayloadformatread.h Mon Sep 06 17:32:13 2010 +0530
@@ -0,0 +1,405 @@
+/*
+* Copyright (c) 2004-2006 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: Provides a comfort noise generator class
+*
+*/
+
+
+
+#ifndef MSRPPAYLOADFORMATREAD_H
+#define MSRPPAYLOADFORMATREAD_H
+
+// INCLUDES
+#include <e32base.h>
+#include <e32std.h>
+#include <rtpheader.h>
+#include <mmfformat.h>
+#include <rtpheader.h>
+
+#include "formatstatemachine.h"
+#include "mccinternalcodecs.h"
+
+
+// CLASS DECLARATION
+class CMMFBuffer;
+class TStringElement;
+
+/**
+*
+*/
+class CMsrpPayloadFormatRead : public CPayloadFormatRead,
+ public MPayloadFormatRead
+ {
+ public: // Constructors and destructor
+ /**
+ * Two-phased constructor.
+ * @param aSource Source of the data for the payload format plugin
+ */
+ static CMsrpPayloadFormatRead* NewL ( MDataSource* aSource );
+
+ /**
+ * Destructor.
+ */
+ virtual ~CMsrpPayloadFormatRead ( );
+
+ public: // New functions
+
+ /**
+ * Get number of audio packets received on downlink in last talk spurt.
+ * @since Series-60 2.1
+ * @return Number of audio packets received
+ */
+ virtual TInt LastDlPacketCount( );
+
+ /**
+ * Cancel any requests from DataPath and Stop state machine also
+ * @since Series-60 2.1
+ * @return None
+ */
+ virtual void CancelDlRequest( );
+
+ /**
+ * Send full sink buffer with AMR frames to data path.
+ * Sink buffer is decided on one of the two frame buffers
+ * Called by the state machine.
+ * @since Series-60 2.1
+ * @return None
+ */
+ void SendDataToSinkL( );
+
+ /*
+ * Fill the sink buffer by decoding the RTP payload into AMR frames
+ * Sink buffer is decided on one of the two frame buffers
+ * Called by the state machine.
+ * @since Series-60 2.1
+ * @return None
+ */
+ void FillSinkBufferL( );
+
+ /**
+ * Request the RTPSource to fill the source buffer with RTP payload
+ * Source buffer is decided by the RTPSource.
+ * Called by the state machine.
+ * @since Series-60 2.1
+ * @return None
+ */
+ void FillSourceBufferL( );
+
+ public: // From CMMFFormatDecode
+
+ /**
+ * From CMMFFormatDecode. Return number of audio streams for the given
+ * media Raw audio files can only have 1 audio stream.
+ *
+ * @param aMediaType KUidMediaTypeAudio or KUidMediaTypeVideo
+ * @return Number of audio streams
+ */
+ TUint Streams( TUid aMediaType ) const;
+
+ /**
+ * Return the frame time interval for the given media
+ *
+ * @param aMediaType KUidMediaTypeAudio or KUidMediaTypeVideo
+ *
+ * @return Time interval in micro seconds
+ */
+ TTimeIntervalMicroSeconds FrameTimeInterval( TMediaId aMediaType ) const;
+
+ /** *** NOT SUPPORTED ***
+ * Return the clip duration for the given media
+ *
+ * @param aMediaType KUidMediaTypeAudio or KUidMediaTypeVideo
+ *
+ * @return Clip duration in micro seconds
+ */
+ TTimeIntervalMicroSeconds Duration( TMediaId aMediaType ) const;
+
+ /**
+ * From CMMFFormatDecode
+ */
+ TFourCC SinkDataTypeCode( TMediaId aMediaId );
+
+ public: // From MDataSource. CAmrPayloadFormatRead is data source to the data path and AMR codec.
+
+ /**
+ * From MDataSource. Read the next block of data from file into the
+ * given buffer.
+ *
+ * @param aBuffer source data buffer for the AMR-NB data read
+ * @param aConsumer data sink pointer
+ * @param aMediaId contains the media type KUidMediaTypeAudio or KUidMediaTypeVideo
+ *
+ * @return
+ */
+ void FillBufferL( CMMFBuffer* aBuffer,
+ MDataSink* aConsumer,
+ TMediaId aMediaId );
+
+ /**
+ * From MDataSource. Primes the source.
+ * @since Series 60 3.0
+ * @return None
+ */
+ void SourcePrimeL( );
+
+ /**
+ * From MDataSource. Plays the source.
+ * @since Series 60 3.0
+ * @return None
+ */
+ void SourcePlayL( );
+
+ /**
+ * From MDataSource. Pauses the source.
+ * @since Series 60 3.0
+ * @return None
+ */
+ void SourcePauseL( );
+
+ /**
+ * From MDataSource. Stops the source.
+ * @since Series 60 3.0
+ * @return None
+ */
+ void SourceStopL( );
+
+ /**
+ * Create a source buffer for the given media
+ *
+ * @param aMediaId contains the media type KUidMediaTypeAudio or KUidMediaTypeVideo
+ * @param aReference value of False is returned to caller if source buffer is created
+ *
+ * @return Pointer to source buffer created
+ */
+ CMMFBuffer* CreateSourceBufferL( TMediaId aMediaId,
+ TBool &aReference );
+
+ /**
+ * Create a source buffer for the given media, setting frame size to match
+ * the given sink buffer
+ *
+ * @param aMediaId contains the media type KUidMediaTypeAudio or KUidMediaTypeVideo
+ * @param aSinkBuffer address of sink buffer
+ * @param aReference value of False is returned to caller if source buffer is created
+ *
+ * @return Pointer to source buffer created
+ */
+ CMMFBuffer* CreateSourceBufferL( TMediaId aMediaId,
+ CMMFBuffer& aSinkBuffer,
+ TBool &aReference );
+
+ /**
+ * Return the four CC code for the given media
+ *
+ * @param aMediaId contains the media type KUidMediaTypeAudio or KUidMediaTypeVideo
+ *
+ * @return FourCC code
+ */
+ TFourCC SourceDataTypeCode( TMediaId aMediaId );
+
+ /**
+ * Set the source 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 SetSourceDataTypeCode( TFourCC aSourceFourCC,
+ TMediaId aMediaId );
+
+ /**
+ * Log in to the source thread - this funtion merely passes the command to
+ * its source clip data source object. The source clip object will handle
+ * the thread log on procedures.
+ *
+ * @param aEventHandler address of event handler
+ *
+ * @return error code returned by source clip
+ */
+ TInt SourceThreadLogon( MAsyncEventHandler& aEventHandler );
+
+ /**
+ * Log out of the source thread - this funtion merely passes the command to
+ * its source clip data source object. The source clip object will handle
+ * the thread log off procedures.
+ *
+ * @return None
+ */
+ void SourceThreadLogoff( );
+
+ /**
+ * Negotiate source settings ( buffer size ) to match
+ * given source object
+ *
+ * @param aDataSink address of sink object
+ *
+ * @return None
+ */
+ void NegotiateSourceL( MDataSink& aDataSink );
+
+
+ public: // From MDataSink. CAmrPayloadFormatRead is data sink to the RTP data source.
+
+ /**
+ * Called after the data buffer is filled. Update the number of bytes read
+ * and the current read position for the next read operation.
+ *
+ * @param aBuffer data buffer filled
+ * @param aHeaderInfo RTP packet header information
+ * @return None
+ */
+ virtual void DataBufferFilledL( CMMFBuffer* aBuffer,
+ const TRtpRecvHeader& aHeaderInfo );
+
+ public: // only for videosource-anyformatter-filesink
+ void BufferFilledL( CMMFBuffer* aBuffer );
+ public:
+
+ /**
+ * 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 );
+
+
+
+ protected: // Functions from base classes
+ private:
+ /**
+ * C++ default constructor.
+ */
+ CMsrpPayloadFormatRead();
+
+ /**
+ * By default Symbian 2nd phase constructor is private.
+ *
+ * @param aSource Source of the data for the payload format plugin
+ */
+ void ConstructL( MDataSource* aSource );
+
+ /**
+ * Creates a buffer used in data transfer between format read and
+ * its datasource.
+ *
+ * @since Series 60 3.2
+ * @param aSize Suggested buffer size
+ * @param aIsOwnBuffer Indicates ownership of the buffer
+ * @return Created buffer
+ */
+ CMMFDataBuffer* CreateClipBufferL( TUint aSize, TBool& aIsOwnBuffer );
+
+ TBool FilterUnwantedData(const TDesC8& aBuffer);
+
+ void UpdateConfigurationL( const TDesC8& aConfigParams );
+
+ TInt DecodePayloadL( const TDesC8& aSourceBuffer );
+
+ TInt HandleRedundancyL(TInt aErrNo);
+
+ void SelectFrameBuffer(const TRtpRecvHeader& aRtpHeader);
+
+ TUint32 Read32( const TUint8* const aPointer );
+
+ TUint32 Read24( const TUint8* const aPointer );
+
+ TUint32 Read8 ( const TUint8* const aPointer );
+
+ TInt ParseRedHeader(TUint32 aheader, TUint16& aLenght, TUint16& aTimeStamp );
+
+ void ResetBuffers();
+
+ void ResetPacketBuffers();
+
+ private: // data
+
+ // Flag used to determine which buffer is currently used as a sink buffer
+ enum TCurrentBuffer
+ {
+ EBufferOne = 0,
+ EBufferTwo,
+ EBufferNone
+ };
+
+
+ // Data source providing RTP data
+ MDataSource* iRtpDataSource;
+
+ TFourCC iFourCC;
+
+ TMediaId iMediaId;
+
+ TBool iFillRequested;
+
+ TBool iBufferToReadExists;
+
+ // Format decoding state machine
+ CFormatDecodeStateMachine* iStateMachine;
+
+ // Buffer one to store data
+ CMMFDataBuffer* iFrameBufferOne;
+
+ // Buffer two to store data
+ CMMFDataBuffer* iFrameBufferTwo;
+
+ // Current buffer in use
+ CMMFDataBuffer* iCurrentBuffer;
+
+ // Buffer to hold payload got from RtpSourceSink
+ CMMFDataBuffer* iPayloadBuffer;
+
+ // decodedData
+ CMMFDataBuffer* iDecodedBuffer;
+
+ // Indicates whether payload read has ownership of source buffer
+ TBool iSourceBufOwnership;
+
+ // Parameters relating to data decoding
+ TMccCodecInfo iCodecInfo;
+
+ // MMF AsyncEventHandler
+ MAsyncEventHandler* iEventHandler;
+
+ TInt iPacketCount;
+
+ TInt iDroppedPacketCount;
+
+ TInt64 iSatisfySecNumber;
+
+ TInt64 iCheckSum;
+
+ TBool iFirstPacketsMissing;
+
+ TInt iLevelsMissing;
+
+ CArrayFixFlat< TStringElement >* iRedData;
+
+ HBufC8* iCharData;
+
+ //Flag to indicate have we getten the check sum seed
+ TBool iPacketSecNumber;
+
+
+ //#ifdef TEST_EUNIT
+ // For EUnit test cases
+ friend class UT_CMsrpPayloadFormatRead;
+ //#endif
+
+ };
+
+#endif