1 /*

     2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:    The payloadization part of the AVC payloadization/depayloadization plugin

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef AVCPAYLOADFORMATWRITE_H

    22 #define AVCPAYLOADFORMATWRITE_H

    23 

    24 // include files

    25 #include<e32base.h>

    26 #include<e32std.h>

    27 #include<mmf/server/mmfdatabuffer.h>

    28 #include<mmf/common/mmfutilities.h>

    29 

    30 #include "rtpheader.h"

    31 #include "mccinternalcodecs.h"

    32 #include "formatstatemachine.h"

    33 #include "rfc3984encode.h"

    34 #include "avcrtpstruct.h"

    35 

    36 // Forward declarations

    37 

    38 class CRFC3984Encode;

    39 class TRtpRecvHeader;

    40 

    41 

    42 

    43 

    44 // CAvcPayloadFormatWrite class declaration. 

    45 // The class receives one avc frame and payloadizes it into

    46 // one ore more RTP packets and gives the packets to the RTP

    47 // layer

    48 

    49 class CAvcPayloadFormatWrite : public CPayloadFormatWrite, public MPayloadFormatWrite

    50     {

    51 	public: 

    52 	

    53 		static CAvcPayloadFormatWrite * NewL( MDataSink * aSink);

    54 		

    55 		virtual ~CAvcPayloadFormatWrite();

    56 		

    57 		// from MPayloadFormatWrite

    58 		void EmptySourceBufferL( );

    59 		void SourceBufferEmptiedL( );

    60 		virtual void SetPayloadType( TUint8 aPayloadType);

    61 		void CancelUlRequest();

    62 		

    63 		// from CMMFFormatEncode (currently for audio, so none of these

    64 		// is implemented)

    65 		

    66 		virtual  TTimeIntervalMicroSeconds FrameTimeInterval( TMediaId aMediaType ) const;

    67 		virtual  TTimeIntervalMicroSeconds Duration( TMediaId /*aMediaType*/ ) const;

    68 	

    69 		// from MDataSink (one of the above public class is derived from it)

    70 		virtual CMMFBuffer* CreateSinkBufferL( TMediaId aMediaId, 

    71                                                TBool &aReference ); 

    72         virtual TFourCC SinkDataTypeCode( TMediaId aMediaId );

    73         virtual TInt SetSinkDataTypeCode( TFourCC aSinkFourCC, 

    74                                               TMediaId aMediaId ); 

    75         virtual TInt SinkThreadLogon( MAsyncEventHandler& aEventHandler );

    76         virtual void SinkThreadLogoff( );

    77         virtual void EmptyBufferL( CMMFBuffer* aBuffer, 

    78                                        MDataSource* aSupplier,

    79                                        TMediaId aMediaId );

    80         virtual void BufferEmptiedL( CMMFBuffer* aBuffer );

    81         virtual void SinkPrimeL();

    82         virtual void SinkPlayL( );

    83         virtual void SinkPauseL( );

    84         virtual void SinkStopL( );

    85     

    86 		/**

    87         * Configures payload format with format spesific parameters.

    88         * Leaves with KErrArgument if parameters are invalid.

    89         * @param    aConfigParams       Configuration parameters

    90         * @param    aClock

    91         */

    92         void ConfigurePayloadFormatL( const TDesC8& aConfigParams, 

    93                                       CMccRtpMediaClock& aClock );

    94         

    95 	private:

    96 	

    97 		CAvcPayloadFormatWrite ( );

    98 		void ConstructL( MDataSink* aSink);

    99 		TBool ProcessFramesL();

   100 		CMMFDataBuffer* CreateSinkBufferOfSizeL( TUint aSize ); 

   101     

   102     private:

   103   

   104       	CFormatEncodeStateMachine * iStateMachine;

   105       	CMMFDataBuffer * iSourceBuffer;

   106       	CRFC3984Encode * iEncoder; 					// payloadization class pointer

   107       	CMMFDataBuffer * iSinkBuffer;			// sink buffer 

   108       	TRtpSendHeader iRtpSendHeader;   	// RTP Header	

   109       	TTimeIntervalMicroSeconds iFrameTimeInterval;

   110       	TMediaId iMediaId;

   111       	

   112       	// Parameters relating to RTP data encoding

   113         TMccCodecInfo iCInfo;

   114         

   115         // Pointer to current sink (redundancy or rtp data sink)

   116         MDataSink* iCurDataSink;

   117         

   118         TBool iIsRtpSink;

   119         

   120         TUint iSeqNumIncrementer;

   121 	

   122 	    #if defined( TEST_EUNIT ) && defined ( __WINSCW__ )

   123         friend class UT_CAvcPayloadFormatWrite;

   124         #endif

   125     };

   126 

   127 #endif