/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "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:

* Ixonos Plc

*

* Description:  

* A header file for implementation class of AVC editing API.

*               

*/

#ifndef VEDAVCEDITIMP_H

#define VEDAVCEDITIMP_H

// INCLUDES

#include "avcdapi.h"

#include "vedavcedit.h"

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  CTranscoder Implementation class

*  @lib VEDAVCEDIT.LIB

*  @since 

*/

NONSHARABLE_CLASS(CVedAVCEditImp) : public CVedAVCEdit

{

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CVedAVCEditImp* NewL();

        /**

        * Destructor.

        */        

        ~CVedAVCEditImp();

    public: // Functions from CVedAVCEdit                    

    	/**

        * From CVedAVCEdit Add MDF specific NAL headers to input AVC frame        

        */                

	    void ProcessAVCBitStreamL(TDes8& aBuf, TInt& aFrameLen, TInt aDecInfoSize, TBool aFirstFrame);

	    /**	    

 	    * From CVedAVCEdit Calculate default value for max no. of buffered frames

        */        

	    TInt GetMaxAVCFrameBuffering(TInt aLevel, TSize aResolution);

	    /**

        * From CVedAVCEdit Get input bitstream level from SPS

        */

        TInt GetLevel(TDesC8& aBuf, TInt& aLevel);

        /**

        * From CVedAVCEdit Get input bitstream resolution from SPS

        */

        TInt GetResolution(TDesC8& aBuf, TSize& aResolution);

#ifdef VIDEOEDITORENGINE_AVC_EDITING

    	/**

		* From CVedAVCEdit Convert AVC decoder config info to AVCDecoderConfigurationRecord -format

		*/        

	    void ConvertAVCHeaderL(TDesC8& aSrcBuf, TDes8& aDstBuf );

	    /**	    

 	    * From CVedAVCEdit Save SPS/PPS NAL units from AVCDecoderConfigurationRecord

        */        

        void SaveAVCDecoderConfigurationRecordL(TDes8& aBuf, TBool aFromEncoder);              

        /**	    

 	    * From CVedAVCEdit Update slice header information: frame number and PPS id        

        */      

        TInt ParseFrame(HBufC8*& aBuf, TBool aContainsDCR, TBool aFromEncoder);

	    /**	    

 	    * From CVedAVCEdit Constructs AVCDecoderConfigurationRecord for the output sequence

        */      

        void ConstructAVCDecoderConfigurationRecordL( TDes8& aDstBuf );

        /**	    

 	    * From CVedAVCEdit Set length of NAL size field of output sequence

        */      

        void inline SetNALLengthSize( TInt aSize ) { iNalLengthSize = aSize; }

         /**	    

 	    * From CVedAVCEdit Set output level for constructing AVCDecoderConfigurationRecord

        */     

        void inline SetOutputLevel(TInt aLevel) { iOutputLevel = aLevel; }

        /**	    

 	    * From CVedAVCEdit Check if encoding is required until the next IDR unit

        */     

        TBool EncodeUntilIDR();

        /**	    

 	    * From CVedAVCEdit Check if NAL unit is an IDR NAL

        */     

        TBool IsNALUnitIDR( TDes8& aNalBuf );

        /**	    

 	    * From CVedAVCEdit Store PPS id from current slice

        */     

		void StoreCurrentPPSId( TDes8& aNalBuf );

        /**	    

 	    * From CVedAVCEdit Generate a not coded frame

        */     

		TInt GenerateNotCodedFrame( TDes8& aNalBuf, TUint aFrameNumber );

        /**

        * From CVedAVCEdit Modify the frame number of the NAL unit

        */	   

		void ModifyFrameNumber( TDes8& aNalBuf, TUint aFrameNumber );

private:  // Private methods

        /*

        * Saves one SPS/PPS NAL unit for later use

        *  

        * @param aBuf Input buffer containing AVCDecoderConfigurationRecord        

        */                	    

	    TInt ParseOneNAL(void *aNalUnitData, TUint* aNalUnitLength, TBool aFromEncoder);

	    TInt ParseParameterSet(void *aNalUnitData, TUint* aNalUnitLength, TBool aFromEncoder);

#endif

    private:

        /**

        * C++ default constructor.

        */

        CVedAVCEditImp();

        /**

        * 2nd phase constructor 

        */

        void ConstructL();

	private:  // Data

	    avcdDecoder_t* iAvcDecoder;  // For parsing AVC content / for CD operations 

	    TInt iFrameLengthBytes;  // no. of bytes used for length field	    	    						

#ifdef VIDEOEDITORENGINE_AVC_EDITING

	    TInt iNalLengthSize;	// The number of bytes used to signal NAL unit's length 

	    TInt iOutputLevel;  // output level

#endif

};

#endif

// End of File