/*

* Copyright (c) 2002 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:  

*       For checking the validity of Smart messaging ringing tone and for 

*       ripping the ringing tone title from binary data. 

*

*/

// SYSTEM INCLUDES

#include <e32svr.h>

// USER INCLUDES

#include "ringbctoneconverter.h"

#include "nsmringtone.h"

#include "debugtraces.h"

// LOCAL CONSTANTS AND MACROS

const TInt KCompMaxSongLength = 240; // maximum number of notes

// ================= MEMBER FUNCTIONS =======================

// ---------------------------------------------------------

// NewL()

//

// ---------------------------------------------------------

RingBCNSMConverter* RingBCNSMConverter::NewL()

    {

	RingBCNSMConverter* self = new (ELeave) RingBCNSMConverter();

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop();	// self

	return self;

    }

// ---------------------------------------------------------

// RingBCNSMConverter()

//

// ---------------------------------------------------------

RingBCNSMConverter::RingBCNSMConverter()

    {

	iScale = EScale2;

	iStyle = EStyleNatural;

    }

// ---------------------------------------------------------

// RingBCNSMConverter()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ConstructL()

    {

    }

// ---------------------------------------------------------

// ~RingBCNSMConverter()

//

// ---------------------------------------------------------

RingBCNSMConverter::~RingBCNSMConverter()

    {

	delete iCompData.iSongData; 	

    }

// ---------------------------------------------------------

// ConvertNsmToCompDataL()

//

// ---------------------------------------------------------

TCompData* RingBCNSMConverter::ConvertNsmToCompDataL( const TDesC8& aFileData )

    {

    QDEBUG_WRITE( "***BEGIN" );

    iReceivedNsmRTData.Set( aFileData );

    iReadOnly = EFalse;

	ResetForCompData();

	delete iCompData.iSongData;

	iCompData.iSongData = NULL;

	iCompData.iSongData = new(ELeave) CArrayFixFlat<TInstruction>( KCompMaxSongLength );

    QDEBUG_WRITE_FORMAT( "***NSM DATA LENGTH:", iReceivedNsmRTData.Length() );

    if( iReceivedNsmRTData.Length() == 0 )

        {

        QDEBUG_WRITE( "!!!ZERO LENGTH" );

        User::Leave( KErrCorrupt );

        }

	TInt commandlength( 1 );

	while( commandlength != KrtCommandEnd && 

        iNsmPosition < iReceivedNsmRTData.Length() )

        {

		commandlength = GetBits(KrtCommandLengthBits);

        QDEBUG_WRITE_FORMAT( "***NEXT CMD LENGTH :", commandlength );

		if (commandlength > 3)

            {

            QDEBUG_WRITE( "!!!CMD TOO LONG" );

            User::Leave( KErrCorrupt );

            }

		for (TInt i=0; i<commandlength; i++)

            {		

            QDEBUG_WRITE_FORMAT( "***CMD NUMBER ", i );

			ProcessNsmRingToneCommandPartL();

            }

        }

	return &iCompData;

    }

// ---------------------------------------------------------

// ProcessNsmRingToneCommandPartL()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ProcessNsmRingToneCommandPartL()

    {

	TInt commandpart( GetBits(KrtCommandPartBits) );

    QDEBUG_WRITE_FORMAT( "***CMD PART: ", commandpart );

	switch (commandpart)

	    {

	    case KrtCommandRTProgramming:

			{

			iNsmRTFlags |= KrtFlagRTProgramming;

		    break;

			}

	    case KrtCommandUnicode:

			{

			iNsmRTFlags |= KrtFlagUnicode;

		    break;

			}

	    case KrtCommandCancelCommand:

			{

		    if (GetBits(KrtCommandPartBits) == KrtCommandUnicode)

                {

			    iNsmRTFlags &= ~KrtFlagUnicode;

                }

		    break;

			}

	    case KrtCommandSound:

			{

			if ((iNsmRTFlags & KrtFlagRTProgramming) == 0)

                {

                QDEBUG_WRITE( "!!!CMD SOUND WITH NO RT PROGRAMMING" );

                User::Leave( KErrCorrupt );

                }

		    ProcessNsmRingToneSoundSpecL();

		    break;

			}

	    default:

			{

            // Ignore unknown commands

            QDEBUG_WRITE( "???CMD UNKNOWN" );

            iReadOnly = ETrue;

		    break;

			}

	    }

	GetBits(KrtFiller); // skip the filler bits

    }

// ---------------------------------------------------------

// ProcessNsmRingToneSoundSpecL()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ProcessNsmRingToneSoundSpecL()

    {

	TInt soundspec( GetBits(KrtSongTypeBits) );

    QDEBUG_WRITE_FORMAT( "***SONG TYPE :", soundspec );

	switch (soundspec)

	    {

	    case KrtSongTypeBasic:

			{

		    ProcessNsmRingToneSongTitleL();

		    ProcessNsmRingToneSongL();

		    break;

			}

	    case KrtSongTypeTemporary:

            {

		    ProcessNsmRingToneSongL();

		    break;

			}

	    default:

            {

		    iReadOnly = ETrue;

		    break;

			}

	    }

	iCompData.iSongLength = iCompDataPosition;

    }

// ---------------------------------------------------------

// ProcessNsmRingToneSongTitleL()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ProcessNsmRingToneSongTitleL()

{

	TInt titlelength( GetBits(KrtSongTitleTextLengthBits) );

    QDEBUG_WRITE_FORMAT( "***TITLE LENGTH ", titlelength );

    TInt charWidth( KrtDefaultCharBits );

	if( iNsmRTFlags & KrtFlagUnicode )

    	{

        charWidth = KrtUnicodeCharBits;

        }

    QDEBUG_WRITE_FORMAT( "***TITLE CHAR WIDTH: ", charWidth );

    TBuf<KrtSongTitleMaxLength> title;

	for( TInt i( 0 ); i < titlelength; i++ )

        {

        title.Append( GetBits(charWidth) );

        }

    QDEBUG_WRITE_FORMAT( "***TITLE: ", &title );

    SetTitle( title );

    }

// ---------------------------------------------------------

// ProcessNsmRingToneSong()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ProcessNsmRingToneSongL()

    {

	TInt songsequencelength( GetBits(KrtSongsequenceLengthBits) );

    QDEBUG_WRITE_FORMAT( "***SEQUENCE LENGTH ", songsequencelength );

	/*if( songsequencelength == 0 )

		{

		iReadOnly = ETrue;

		}*/

	for (TInt i( 0 ); i<songsequencelength; i++)

	    {

		TInt patternheaderid( GetBits(KrtInstructionIdLengthBit) );

        QDEBUG_WRITE_FORMAT( "***PATTERN HEADER ID:", patternheaderid );

		if (patternheaderid != EPatternHeaderId)

            {

            QDEBUG_WRITE( "!!!PATTERN HEADER ID INVALID" );

			User::Leave(KErrCorrupt);

            }

		TInt patternid( GetBits(KrtPatternIdLengthBit) );

        QDEBUG_WRITE_FORMAT( "***PATTERN ID:", patternid );

		TInt loopvalue( GetBits(KrtPatternLoopValueBits) );

        QDEBUG_WRITE_FORMAT( "***PATTERN LOOP VALUE:", loopvalue );

		TInt patternspec( GetBits(KrtPatternSpecBits) );

        QDEBUG_WRITE_FORMAT( "***PATTERN SPEC:", patternspec );

		if( patternspec != KrtPatternDefined )

		    {

            QDEBUG_WRITE( "***PATTERN NOT DEFINED" );

			iNsmRTPatterns[patternid].iStart = iCompData.iSongData->Count();

            for (TInt l( 0 ); l < patternspec && iCompDataPosition < KCompMaxSongLength; l++)

                {

				ProcessNsmRingTonePatternInstructionL();

                }

			iNsmRTPatterns[patternid].iEnd = iCompDataPosition - 1;

		    }

		// check if the pattern is really already defined before copying

		TInt start( iNsmRTPatterns[patternid].iStart );

		TInt end( iNsmRTPatterns[patternid].iEnd );

		if( start < end )

		    {

			if( loopvalue < KrtPatternRepeatInfinite )

			    {

				for( TInt loopNum( 0 ); loopNum < loopvalue; loopNum++ ) // handle repeat

				    {

					for (TInt k=start; (k<=end)&&(iCompDataPosition<KCompMaxSongLength); 

						k++, iCompDataPosition++)

                        {

						iCompData.iSongData->AppendL( iCompData.iSongData->At( k ) );

                        }

				    }

			    }

			else // handle infinite repeat

			    {

				while( iCompDataPosition<KCompMaxSongLength )

				    {

					for (TInt k=start; (k<=end)&&(iCompDataPosition<KCompMaxSongLength); 

						k++, iCompDataPosition++)

                        {

						iCompData.iSongData->AppendL( iCompData.iSongData->At( k ) );

                        }

				    }

			}

		}

	}

}

// ---------------------------------------------------------

// ProcessNsmRingTonePatternInstruction()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ProcessNsmRingTonePatternInstructionL()

    {

	TInt instructionid( GetBits(KrtInstructionIdLengthBit) );

    QDEBUG_WRITE_FORMAT( "***INSTRUCTION ID:", instructionid );

	switch (instructionid)

	    {

	    case ENoteInstructionId:

			{

            QDEBUG_WRITE_FORMAT( "***INSTRUCTION ID: NOTE", instructionid );

		    ProcessNsmRingToneNoteInstructionL(iScale, iStyle);

		    break;

			}

	    case EScaleInstructionId:

			{

			iScale = GetBits(KrtNoteScaleBits);

            QDEBUG_WRITE_FORMAT( "***INSTRUCTION SCALE:", iScale );

		    break;

			}

	    case EStyleInstructionId:

			{

			iStyle = GetBits(KrtNoteStyleBits);

            QDEBUG_WRITE_FORMAT( "***INSTRUCTION STYLE:", iStyle );

            if( iStyle == EStyleReserved )

                {

                QDEBUG_WRITE( "???INSTRUCTION STYLE NOT SUPPORTED" );

                iReadOnly = ETrue;

                }

		    break;

			}

	    case ETempoInstructionId:

			{

			iCompData.iTempo = GetBits(KrtTempoBits);

            QDEBUG_WRITE_FORMAT( "***INSTRUCTION TEMPO:", iCompData.iTempo );

            if( iCompData.iTempo > ETempo250 )

                {

                QDEBUG_WRITE( "???TEMPO TOO HIGH" );

                iReadOnly = ETrue;

                }

		    break;

			}

	    case EVolumeInstructionId:

            {

			QDEBUG_WRITE( "***INSTRUCTION VOLUME" );

		    GetBits(KrtVolumebits);

		    break;

			}

	    default:

            {

			QDEBUG_WRITE( "???INSTRUCTION NOT SUPPORTED" );

            iReadOnly = ETrue;

		    break;

			}

	    }

    }

// ---------------------------------------------------------

// ProcessNsmRingToneNoteInstruction()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ProcessNsmRingToneNoteInstructionL(TInt aScale, TInt aStyle)

    {

	TInt notevalue( GetBits(KrtNoteValueBits) );

    QDEBUG_WRITE_FORMAT( "***NOTE VALUE:", notevalue );

    if( notevalue != ENotePause && (notevalue > ENoteB 

        || iScale == EScale4 && notevalue > ENoteGis

        || iScale == EScale1 && notevalue < ENoteG ) )

        {

        QDEBUG_WRITE( "???NOTE VALUE OUT OF RANGE" );

        iReadOnly = ETrue;

        }

	TInt noteduration( GetBits(KrtNoteDurationBits) );

    QDEBUG_WRITE_FORMAT( "***NOTE DURATION:", noteduration );

    if( noteduration > EDurationThirtysecond )

        {

        QDEBUG_WRITE( "???NOTE DURATION OUT OF RANGE" );

        iReadOnly = ETrue;

        }

	TInt notedurspecifier( GetBits(KrtNoteDurSpecifierBits) );

    QDEBUG_WRITE_FORMAT( "***NOTE DURATION SPECIFIER:", notedurspecifier);

    if( notedurspecifier == EDurSpecifireDoubleDotted

        || notedurspecifier > EDurSpecifierTriplet )

        {

        QDEBUG_WRITE( "???NOTE DURATION SPECIFIER OUT OF RANGE" );

        iReadOnly = ETrue;

        }

	TInstruction symbol;

	symbol.iValue = notevalue;

	symbol.iDuration = noteduration;

	symbol.iDurspecifier = notedurspecifier;

	symbol.iScale = aScale;

	symbol.iStyle = aStyle;

	iCompData.iSongData->AppendL( symbol );

	iCompDataPosition ++;

    }

// ---------------------------------------------------------

// GetBits()

//

// ---------------------------------------------------------

TInt RingBCNSMConverter::GetBits(TInt aNumBits)

    {

	TUint32 buf( 0 );   

	if( aNumBits == 0 ) // handle byte alignment

	    {

		if (iNsmPositionBit != 0)

		    {

			iNsmPositionBit = 0;	// skip filler bits

			iNsmPosition ++;			

		    }

		return buf;

	    }

	for (TInt n=0; n<4; n++)

	    {

		buf <<= 8;

		if ( iNsmPosition+n < iReceivedNsmRTData.Length() )

            {

			buf |= iReceivedNsmRTData[iNsmPosition+n];

            }

	    }

	TUint32 filter = 0;

	buf = (buf >> (32 - iNsmPositionBit - aNumBits)) & ~(~filter << aNumBits);

	iNsmPositionBit += aNumBits;

	while (iNsmPositionBit > 7)

	    {

		iNsmPositionBit -= 8;

		iNsmPosition ++;

	    }

	return buf;

    }

// ---------------------------------------------------------

// ResetForCompData()

//

// ---------------------------------------------------------

void RingBCNSMConverter::ResetForCompData()

    {

	iNsmRTPatterns[EPatternIdA].iStart = 0;

	iNsmRTPatterns[EPatternIdA].iEnd = 0;

	iNsmRTPatterns[EPatternIdB].iStart = 0;

	iNsmRTPatterns[EPatternIdB].iEnd = 0;

	iNsmRTPatterns[EPatternIdC].iStart = 0;

	iNsmRTPatterns[EPatternIdC].iEnd = 0;

	iNsmRTPatterns[EPatternIdD].iStart = 0;

	iNsmRTPatterns[EPatternIdD].iEnd = 0;

	iNsmRTFlags = 0;

    iNsmPosition = 0;

	iNsmPositionBit = 0;

	iCompDataPosition = 0;

	iCompData.iTempo = KrtBpmDefault;

	iCompData.iSongLength = 0;

    }

// ---------------------------------------------------------

// SetTitle()

//

// ---------------------------------------------------------

void RingBCNSMConverter::SetTitle( const TDesC& aFileName )

    {

    iCompData.iSongTitle = aFileName.Left( KrtSongTitleTextLength );

    }

// ---------------------------------------------------------

// TitleLC()

//

// ---------------------------------------------------------

HBufC* RingBCNSMConverter::TitleLC(TPtr8& aFileData)

{

	iReceivedCompData = ConvertNsmToCompDataL(aFileData);

	HBufC* titlePtr = iReceivedCompData->iSongTitle.AllocLC();

	return titlePtr;

}

// ---------------------------------------------------------

// IsRingToneMimeTypeL()

//

// ---------------------------------------------------------

TBool  RingBCNSMConverter::IsRingToneMimeTypeL(TPtr8& aFileData)

    {

	TRAPD( returnError, 

        iReceivedCompData = ConvertNsmToCompDataL(aFileData) );

    if( returnError != KErrCorrupt 

        && returnError != KErrNotSupported )

        {

        User::LeaveIfError( returnError );

        }

    return returnError != KErrCorrupt;

    }

// end of file