/*

* Copyright (c) 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 DTMF support

*

*/

#ifndef MCCINTERNALCODECS_H

#define MCCINTERNALCODECS_H

//  INCLUDES

#include <mmf\common\mmfutilities.h>

#include <mmf\common\mmffourcc.h>

#include <mmf\common\mmfbase.h>

#include <in_sock.h>

#include "mmcccodecinformation.h"

#include "mmccnetworksettings.h"

// CONSTANTS

// Internal value for Mcc codec information in order to catch undefined values

const TUint KMccCodecParamUndefined = 0;

// Internal value for undefined payload type as max payload type is 127 (7-bit value)

// and values 0-127 are used for different payload types. Naturally then value 128 is

// then a good value for payload type.

const TUint8 KMccPayloadTypeMax = 128;

// Default ports for RTP & RTCP

//const TUint KMDefaultRtpPort = 5000;

//const TUint KDefaultRtcpPort = 5001;

// Default jitter buffer size in milliseconds

const TUint KDefautJitterBufferSize = 200;

// Number of AMR bitrates supported

const TUint KAmrBitratesSupported = 8;

// Number of G.711 bitrates supported

const TUint KG711BitratesSupported = 1;

// Number of iLBC bitrates supported

const TUint KIlbcBitratesSupported = 2;

// Number of G.729 bitrates supported

const TUint KG729BitratesSupported = 1;

// AMR BITRATES

const TUint KAmrBitrates[KAmrBitratesSupported] = 

    { 

    4750, 5150, 5900, 6700, 7400, 7950, 10200, 12200  

    };

// G.711 BITRATES

const TUint KG711Bitrates[KG711BitratesSupported] = 

    { 

    64000 

    };

// iLBC BITRATES (Can also tell the codec mode for iLBC (20ms, 30ms)

const TUint KIlbcBitrates[KIlbcBitratesSupported] = 

    { 

    13330, 15200 

    };

// G.729 BITRATES

const TUint KG729Bitrates[KG729BitratesSupported] = 

    {

    8000

    };

// Generic nothing mode

const TUint KMccCodecModeNone = 1;

// G.711 Codec modes as it uses one FourCC

const TUint KG711ModeaLawEnc = 2;

const TUint KG711ModeuLawEnc = 3;

// AMR Codec modes

const TUint KAmrCodecModeBandwidthEfficient = 4;

const TUint KAmrCodecModeOctetAlign = 5;

// DTMF Modes

const TUint KDtmfModeEvent = 6;

const TUint KDtmfModeTone = 7;

const TUint KDtmfModeRedEvents = 8;

// iLBC codec modes

const TUint KIlbcMode20msFrame = 9;

const TUint KIlbcMode30msFrame = 10;

// NALU constants

const TInt KMccNaluStartCodeLen = 3;

const TInt KMccNaluEndCodeLen = 2;

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  Mcc Codec information for Mcc internal use

*

*  @lib N/A

*  @since Series 60 3.0

*/

class TMccCodecInfo

    {

    public: // Constructors

        /**

        * Default constructor

        */

        inline TMccCodecInfo() : 

        				iType(TUid()),

                        iFourCC( TFourCC() ),

                        iPayloadFormatEncoder( 0 ),

                        iPayloadFormatDecoder( 0 ),                         

                        iBitrate( KMccCodecParamUndefined ),

                        iSamplingFreq( 0 ), 

                        iEnableDTX( EFalse ),

                        iCodecMode( KMccCodecParamUndefined ), 

                        iAlgoUsed( ENoAlgoUsed ),

                        iPtime( KMccCodecParamUndefined ), 

                        iMaxPtime( KMccCodecParamUndefined ),

                        iPayloadType( KMccPayloadTypeMax ), 

                        iRedundantPayload( KMccPayloadTypeMax ),

                        iRedundancyCount( static_cast<TUint8>( KMccCodecParamUndefined ) ),

                        iHwFrameTime( 0 ), 

                        iFrameSize( 0 ), 

                        iCNFrameSize( 0 ),

                        iFmtpLength( 0 ),

                        iJitterSize( 0 ),

                        iNeighbor( EFalse ),

                        iModeChangePeriod( 1 ),

                        iJitterBufInactivityTimeOut( 0 ),

                        iJitterBufPlayToneTimeout( 0 ),

                        iJitterBufPlayToneFrequency( 0 ),

                        iJitterBufPlayToneDuration( 0 ),

                        iJitterBufThreshold( 0 ),

                        iJitterBufBufferLength( 0 ),

                        iComfortNoiseGenerationPt( KPayloadTypeUndefined ),

                        iBitrateMask( 0 ),

						iAverageBitrate( 0 ),

						iMaxBitrate( 0 ),

						iFramerate( 0 ),

					    iVideoWidth( 0 ),

					    iVideoHeight( 0 ),

					    iMTUSize( 1400 ),

                        iSessionID( 0 ),

                        iLinkID( 0 ),

                        iStreamID( 0 ),

                        iKeepaliveInterval( 0 ),

                        iKeepalivePT( 0 ),

                        iKeepaliveData( KNullDesC8 ),

                        iIsUpdate(0),

                        iMaxRed( -1 ),

                        iSourceDefinedTimeStamps( EFalse ),

                        iConfigKey( KNullDesC8 ),

                        iEncodingDecodingDevice( KNullUid )

            {   };

        /**

        * Copy constructor

        */

        inline TMccCodecInfo( const TMccCodecInfo& aCodec ) : 

                    iType( aCodec.iType ),         

                    iSdpName( aCodec.iSdpName ),         

                    iFourCC( aCodec.iFourCC ), 

                    iPayloadFormatEncoder( aCodec.iPayloadFormatEncoder ),

                    iPayloadFormatDecoder( aCodec.iPayloadFormatDecoder ),                         

                    iBitrate( aCodec.iBitrate ),

                    iSamplingFreq( aCodec.iSamplingFreq ), 

                    iEnableDTX( aCodec.iEnableDTX ), 

                    iCodecMode( aCodec.iCodecMode ),

                    iAlgoUsed( aCodec.iAlgoUsed ), 

                    iPtime( aCodec.iPtime ),

                    iMaxPtime( aCodec.iMaxPtime ), 

                    iPayloadType( aCodec.iPayloadType ),

                    iRedundantPayload( aCodec.iRedundantPayload ), 

                    iRedundancyCount( aCodec.iRedundancyCount ),

                    iHwFrameTime( aCodec.iHwFrameTime ),

                    iFrameSize( aCodec.iFrameSize ), 

                    iCNFrameSize( aCodec.iCNFrameSize ),

                    iFmtpLength( aCodec.iFmtpLength ),

                    iJitterSize( aCodec.iJitterSize ),

                    iNeighbor( aCodec.iNeighbor ),

                    iModeChangePeriod( aCodec.iModeChangePeriod ),

                    iJitterBufInactivityTimeOut( aCodec.iJitterBufInactivityTimeOut ),

                    iJitterBufPlayToneTimeout( aCodec.iJitterBufPlayToneTimeout ),

                    iJitterBufPlayToneFrequency( aCodec.iJitterBufPlayToneFrequency ),

                    iJitterBufPlayToneDuration( aCodec.iJitterBufPlayToneDuration ),

                    iJitterBufThreshold( aCodec.iJitterBufThreshold ),

                    iJitterBufBufferLength( aCodec.iJitterBufBufferLength ),

                    iComfortNoiseGenerationPt( aCodec.iComfortNoiseGenerationPt ),

                    iBitrateMask( aCodec.iBitrateMask ),

					iAverageBitrate( aCodec.iAverageBitrate ),

					iMaxBitrate( aCodec.iMaxBitrate ),

					iFramerate( aCodec.iFramerate ),

					iVideoWidth( aCodec.iVideoWidth ),

					iVideoHeight( aCodec.iVideoHeight ),

					iMTUSize( aCodec.iMTUSize ),

                    iSessionID( aCodec.iSessionID ),

                    iLinkID( aCodec.iLinkID ),

                    iStreamID( aCodec.iStreamID ),

                    iPriority( aCodec.iPriority ),

                    iKeepaliveInterval( aCodec.iKeepaliveInterval ),

                    iKeepalivePT( aCodec.iKeepalivePT ),

                    iKeepaliveData( aCodec.iKeepaliveData ),

                    iIsUpdate( aCodec.iIsUpdate ),

                    iMaxRed( aCodec.iMaxRed ),

                    iSourceDefinedTimeStamps( aCodec.iSourceDefinedTimeStamps ),

                    iConfigKey( aCodec.iConfigKey ),

                    iEncodingDecodingDevice( aCodec.iEncodingDecodingDevice )

            {   };

    public: // Functions

        /**

        * Helper method for checking the codecinfo parameters

        * @since Series 60 3.0

        * @param aCodec Codec which to check

        * @return KErrNotReady or KErrNone

        */

        static inline TInt CheckCodecInfo( const TMccCodecInfo& /*aCodec*/ )

            {

            // And different codec bitrate/mode combinations should be checked also

            /*

            if(  aCodec.iFourCC == KMMFFourCCCodeNULL)

                {

                return KErrNotReady;

                }

            else if( KMccCodecParamUndefined == aCodec.iBitrate )

                {

                return KErrNotReady-1;

                }

            else if( KMccCodecParamUndefined == aCodec.iPtime )

                {

                return KErrNotReady-2;

                }

            else if( KMccCodecParamUndefined == aCodec.iMaxPtime )

                {

                return KErrNotReady-3;

                }

            else if( KMccPayloadTypeMax <= aCodec.iPayloadType )

                {

                return KErrNotReady-4;

                }

            else

                {

                return KErrNone;

                }

            */

            // Need to reimplement this as this is not a good function

            return KErrNone;

            };

        /**

        * Function for comparing two codec info objects

        * @since Series 60 3.0

        * @param aCodec1 Codecinfo 1 to compare

        * @param aCodec2 Codecinfo 2 to compare

        * @return TBool ETrue if aCodec1 and aCodec2 match

        */

        static inline TBool Compare( const TMccCodecInfo& aCodec1, 

                const TMccCodecInfo& aCodec2 )

            {

            if( aCodec1.iFourCC == aCodec2.iFourCC &&

                aCodec1.iBitrate == aCodec2.iBitrate && 

                aCodec1.iSamplingFreq == aCodec2.iSamplingFreq &&

                aCodec1.iVideoHeight == aCodec2.iVideoHeight &&

                aCodec1.iVideoWidth == aCodec2.iVideoWidth &&

                aCodec1.iFramerate == aCodec2.iFramerate &&

                aCodec1.iEnableDTX == aCodec2.iEnableDTX && 

                aCodec1.iCodecMode == aCodec2.iCodecMode && 

                aCodec1.iAlgoUsed == aCodec2.iAlgoUsed && 

                aCodec1.iPtime == aCodec2.iPtime && 

                aCodec1.iMaxPtime == aCodec2.iMaxPtime && 

                aCodec1.iPayloadType == aCodec2.iPayloadType && 

                aCodec1.iRedundantPayload == aCodec2.iRedundantPayload && 

                aCodec1.iRedundancyCount == aCodec2.iRedundancyCount && 

                aCodec1.iHwFrameTime == aCodec2.iHwFrameTime && 

                aCodec1.iFrameSize == aCodec2.iFrameSize && 

                aCodec1.iCNFrameSize == aCodec2.iCNFrameSize && 

                aCodec1.iJitterSize == aCodec2.iJitterSize &&

                aCodec1.iPriority.iPriority == aCodec2.iPriority.iPriority &&

                aCodec1.iPriority.iPref == aCodec2.iPriority.iPref &&

                aCodec1.iKeepaliveInterval == aCodec2.iKeepaliveInterval &&

                aCodec1.iKeepalivePT == aCodec2.iKeepalivePT &&

                aCodec1.iKeepaliveData == aCodec2.iKeepaliveData &&

                aCodec1.iSourceDefinedTimeStamps == aCodec2.iSourceDefinedTimeStamps &&

                aCodec1.iConfigKey == aCodec2.iConfigKey &&

                aCodec1.iEncodingDecodingDevice == aCodec2.iEncodingDecodingDevice )

                {

                return ETrue;

                }

            else

                {

                return EFalse;

                }

            };

        static TBool IsAvcPpsOrSpsData( const TDesC8& aBuffer, TBool aIgnoreStartCode = EFalse )

            {

            TBool isPpsOrSps( EFalse );

            const TUint8 KMccAvcTypeMask = 0x1F;

            const TUint8 KMccAvcTypePps = 0x7;

            const TUint8 KMccAvcTypeSps = 0x8;

            TInt bufferIndex( 0 );

            TInt index( KErrNotFound );

            if ( aIgnoreStartCode )

                {

                index = aBuffer.Length() > 0 ? 0 : KErrNotFound;

                }

            else

                {

                index = FindAvcNaluStart( bufferIndex, aBuffer );

                }

            if ( index != KErrNotFound )

                {

                TUint8 typeInfo = aBuffer[ index ];

                isPpsOrSps = ( ( typeInfo & KMccAvcTypeMask ) == KMccAvcTypePps ||

                               ( typeInfo & KMccAvcTypeMask ) == KMccAvcTypeSps );

                }

            return isPpsOrSps;

            };

        /**

        * This function finds a NALU's starting byte by detecting unique start code

        * occurring in the buffer, as specified in sec B.2 of H264 specs.

        * NOTE: 4-byte start code 0x00000001 is a special case of 3-byte code, 

        * automatically catered in the logic

        *

        * @param aBufferIndex, search start index, on return contains information

        * of how for buffer was searched

        * @param aBuffer

        * @return KErrNotFound if nalu start code is not found, otherwise index

        *         to beginning of end code.

        */     

        static TInt FindAvcNaluStart( TInt& aBufferIndex, const TDesC8& aBuffer )

            {

        	TUint8 a1, a2, a3;

        	if ( aBufferIndex < 0 )

        	    {

        		return KErrNotFound;

        	    }

        	const TUint8 *origDataPtr = aBuffer.Ptr();

        	const TUint8 *dataPtr = origDataPtr;

        	TInt size( aBuffer.Size() );

        	while ( aBufferIndex+KMccNaluStartCodeLen < size )	// at least one byte after start code

        	    {

        	    dataPtr = ( origDataPtr + aBufferIndex );

        		a1 = *dataPtr;

        		dataPtr++;

        		a2 = *dataPtr;

        		dataPtr++;

        		a3 = *dataPtr;

        		if ( a1 == 0x00 && a2 == 0x00 && a3 == 0x01 )

        		    {

        			aBufferIndex += KMccNaluStartCodeLen;

        			return aBufferIndex;

        		    }

        		aBufferIndex++;

        	    }

        	return KErrNotFound;

            };

        /**

        * This function returns location of first byte at the end of  NALU

        * by detecting unique end pattern, as specified in sec B.2 of H264 specs.

        *

        * @param aBufferIndex, search start index, on return contains information

        * of how for buffer was searched

        * @param aBuffer

        * @return index to end beginning of end code or last index of aBuffer if

        *         end code is not found

        */    

        static TInt FindAvcNaluEnd( TInt& aBufferIndex, const TDesC8& aBuffer )

            {

        	TUint8 a1, a2, a3;

        	if ( ( aBufferIndex < 0 ) || ( aBufferIndex >= aBuffer.Size() ) )

        	    {

        		return KErrNotFound;

        	    }

        	const TUint8 *origDataPtr = aBuffer.Ptr();

        	const TUint8 *dataPtr = origDataPtr;

        	TInt size( aBuffer.Size() );	

        	while ( aBufferIndex < size )

            	{

        		if ( aBufferIndex+KMccNaluEndCodeLen < size )

        		    {

        		    dataPtr = ( origDataPtr + aBufferIndex );

        			a1 = *dataPtr;

        			dataPtr++;

            		a2 = *dataPtr;

            		dataPtr++;

            		a3 = *dataPtr;

        			if( ( a1 == 0x00 && a2 == 0x00 && a3 == 0x01 ) ||

        				( a1 == 0x00 && a2 == 0x00 && a3 == 0x00 ) )

        			    {

        				return aBufferIndex;

        		    	}

        	    	}

        		aBufferIndex++;

        	    }

        	return aBufferIndex;

            };

    public: // Data

    	TUid iType;

        /**

        * Sdp name used in SDP messages

        */

        TBuf8<KMaxSdpNameLength> iSdpName;        

        // MMF FourCC code of the codec

        TFourCC iFourCC;

        // MMF format encoder for the codec

        TUint32 iPayloadFormatEncoder;

        // MMF format decoder for the codec

        TUint32 iPayloadFormatDecoder;

        // Codec bitrate

        TUint iBitrate;

        // sampling rate

        TUint32 iSamplingFreq;

        // Should DTX/VAD/CNG be enabled

        TBool iEnableDTX;

        // Codec mode

        TUint iCodecMode;

        // Algorithm used

        TUint iAlgoUsed;

        // Minimum packet time for codec

        TUint iPtime;

        // Maximum packet time for codec

        TUint iMaxPtime;

        // RTP Payload type for the codec

        TUint8 iPayloadType;

        // RTP payload type for redundant audio

        TUint8 iRedundantPayload;

        // Number of redundant frames if enabled

        TUint8 iRedundancyCount;

        // Frametime

        TUint8 iHwFrameTime;

        // Frame size

        TUint iFrameSize;

        // CN Frame size

        TUint8 iCNFrameSize;

        //Fmtp size

        TInt iFmtpLength;

        // Jitter buffer size

        TUint iJitterSize;

        // Mode change neighbor

        TBool iNeighbor;

        // Mode change period

        TUint iModeChangePeriod;

        //JitterBuffer InactivityTimeOut

        TUint iJitterBufInactivityTimeOut;

        //JitterBuffer tone TimeOut

        TUint iJitterBufPlayToneTimeout; 

        //JitterBuffer tone frequecy

        TUint iJitterBufPlayToneFrequency; 

        //JitterBuffer tone duration

        TUint iJitterBufPlayToneDuration;

        //JitterBuffer threshold

        TUint iJitterBufThreshold;

        //JitterBuffer buffer length

        TUint iJitterBufBufferLength;

        /**

         * Comfort noise generation payload type .

         * Disabled if KPayloadTypeUndefined.

         */

        TUint8 iComfortNoiseGenerationPt;