/*

* 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:    

*

*/

#include "mcecomavccodec.h"

#ifdef MCE_COMMON_SERVER_SIDE

#include <mmcccodecinformationfactory.h>

#include <mmcccodecinformation.h>

#include "mcecommediastream.h"

#endif

// CONSTANTS

_LIT8( KMceAvcProfileLevelIdFmtp, "profile-level-id=" );

_LIT8( KMceAvcProfileLevel1, "42800A" );

const TInt KMceAvcProfileLevelIdValLen = 6;

_LIT8( KMceAvcPacketizationModeFmtp, "packetization-mode=" );

_LIT8( KMceAvcPacketizationModeSingleNal, "0" );

const TInt KMceAvcPacketizationModeValLen = 1;

#ifdef MCE_COMMON_SERVER_SIDE

_LIT8( KMceAvcProfileLevelOnly1, "0A" );

const TInt KMceAvcProfileLevelValLen = 2;

const TInt KMceAvcProfileLevelValOffset = 4;

_LIT8( KMceAvcProfileIopDefault, "80" );

const TInt KMceAvcProfileIopValLen = 2;

const TInt KMceAvcProfileIopValOffset = 2;

_LIT8( KMceAvcSpropParameterSetsFmtp, "sprop-parameter-sets=");

const TChar KMceAvcFmtpParameterSeparator = ';';

const TChar KMceAvcFtmpParameterSpace = ' ';

#endif

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

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

// CMceComAvcCodec::NewL

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

//

CMceComAvcCodec* CMceComAvcCodec::NewL( TBuf8<KMceMaxSdpNameLength> aSdpName )

    {

    CMceComAvcCodec* self = NewLC( aSdpName );

    CleanupStack::Pop( self );

    return self;

    }

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

// CMceComAvcCodec::NewLC

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

//

CMceComAvcCodec* CMceComAvcCodec::NewLC( TBuf8<KMceMaxSdpNameLength> aSdpName )

    {

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

    CleanupStack::PushL( self );

    self->ConstructL( aSdpName );

    return self;

    }

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

// CMceComAvcCodec::~CMceComAvcCodec

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

//

CMceComAvcCodec::~CMceComAvcCodec()

    {

    }

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

// CMceComAvcCodec::CMceComAvcCodec

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

//

CMceComAvcCodec::CMceComAvcCodec()

    :CMceComVideoCodec()

    {

    iCodecMode = KMceAvcModeSingleNal;

    iClockRate = KMceAvcDefaultFrameRate;

    iFrameRate = KMceAvcDefaultFrameRate;

    iResolutionWidth = KMceAvcDefaultFrameWidth;

    iResolutionHeight = KMceAvcDefaultFrameHeight;

    iBitrate = KMceAvcLevel1BitrateBps;

	iMaxBitRate = KMceAvcLevel1BitrateBps;

	iAllowedBitrates = KMceAvcDefaultAllowedBitrate;

    iFrameSize = KMceAvcDefaultFrameSize;

    // Defaults should be defined in MCE API

    const TUint8 KMceDefaultAvcPayloadType = 98;

	iPayloadType = KMceDefaultAvcPayloadType;

    iReceiveFrameRate = KMceAvcDefaultFrameRate;

    }

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

// CMceComAvcCodec::ConstructL

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

//

CMceComVideoCodec* CMceComAvcCodec::CloneL()

    {

    CMceComAvcCodec* copy = new (ELeave) CMceComAvcCodec();

    CleanupStack::PushL( copy );

    copy->ConstructL( *this );

    CleanupStack::Pop( copy );

    return copy;

    }

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

// CMceComAvcCodec::ConstructL

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

//

void CMceComAvcCodec::ConstructL( TBuf8<KMceMaxSdpNameLength> aSdpName )

    {

    CMceComVideoCodec::ConstructL( aSdpName );

    }

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

// CMceComAvcCodec::ConstructL

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

//

void CMceComAvcCodec::ConstructL( CMceComAvcCodec& aCodec )

    {

    CMceComVideoCodec::ConstructL( aCodec );

    }

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

// CMceComAvcCodec::SetBitrate

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

//

TInt CMceComAvcCodec::SetBitrate( TUint aBitrate )

    {

	return CMceComCodec::SetBitrate( aBitrate );

    }

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

// CMceComAvcCodec::SetAllowedBitrates

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

//

TInt CMceComAvcCodec::SetAllowedBitrates( TUint aBitrates )

    {

    TInt error = KErrNone;

    //Confirm that the bitrate mask is valid

    //I.e. after all the valid bitrates are set to zero the value should be zero

    if ( !aBitrates || 

        ( aBitrates >> 16 ) > 0 ) 

        {

        error = KErrArgument;

        }

    else

        {

        const TUint KMceOtherInfoMask = 0xFF00;

        if ( aBitrates == KMceAllowedAvcBitrateAll )

            {

            // Start using recommended high bitrate

            aBitrates = KMceAvcAllowedBitrateRecommendedHigh;

            }

        CMceComCodec::SetAllowedBitrates( KMceAllowedAvcBitrateAll );

        iAllowedBitrates &= aBitrates;

        TUint maxBitrate = GetMaxBitRate();

        CMceComVideoCodec::SetMaxBitrate( maxBitrate );

        if ( iBitrate > maxBitrate )

            {

            error = CMceComCodec::SetBitrate( maxBitrate );

            } 

        // Update also other avc codec information stored inside

        // allowed bitrates mask

        iAllowedBitrates |= ( aBitrates & KMceOtherInfoMask );

        }

    return error;

    }

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

// CMceComAvcCodec::GetMaxBitRate

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

//

TUint CMceComAvcCodec::GetMaxBitRate()

    {

    TUint maxBitrate( 0 );

    if( iAllowedBitrates & KMceAvcBitrateLevel1 )

        {

        maxBitrate = KMceAvcLevel1BitrateBps;

        }

    else if( iAllowedBitrates & KMceAvcBitrateLevel1b )

        {

        maxBitrate = KMceAvcLevel1bBitrateBps;

        }

    else if( iAllowedBitrates & KMceAvcBitrateLevel1_1 )

        {

        maxBitrate = KMceAvcLevel11BitrateBps;

        }

    else if( iAllowedBitrates & KMceAvcBitrateLevel1_2 )

        {

        maxBitrate = KMceAvcLevel12BitrateBps;

        }

    else if( iAllowedBitrates & KMceAvcBitrateLevel1_3 )

        {

        maxBitrate = KMceAvcLevel13BitrateBps;

        }

    else if( iAllowedBitrates & KMceAvcBitrateLevel2 )

        {

        maxBitrate = KMceAvcLevel2BitrateBps;

        }

    else

        {

        // NOP

        }

    return maxBitrate;

    }

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

// CMceComAvcCodec::SetMaxBitrate

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

//

TInt CMceComAvcCodec::SetMaxBitrate( TUint aMaxBitrate )

    {

    TInt status = KErrNone;

	switch( aMaxBitrate )

	    {

	    case KMceAvcLevel1BitrateBps:

	        {

	        status = SetAllowedBitrates( KMceAvcCodecProfileIdBaseline |

	                                     KMceAvcCodecProfileIopConstraintSet | 

	                                     KMceAvcBitrateLevel1 );

	        break;

	        }

	    case KMceAvcLevel1bBitrateBps:

	        {

	        status = SetAllowedBitrates( KMceAvcCodecProfileIdBaseline |

	                                     KMceAvcCodecProfileIopConstraintSet | 

	                                     KMceAvcBitrateLevel1b );

	        break;

	        }

	    case KMceAvcLevel11BitrateBps:

	        {

	        status = SetAllowedBitrates( KMceAvcCodecProfileIdBaseline |

	                                     KMceAvcCodecProfileIopConstraintSet | 

	                                     KMceAvcBitrateLevel1_1 );

	        break;

	        }

	    case KMceAvcLevel12BitrateBps:

	        {

	        status = SetAllowedBitrates( KMceAvcCodecProfileIdBaseline |

	                                     KMceAvcCodecProfileIopConstraintSet | 

	                                     KMceAvcBitrateLevel1_2 );

	        break;

	        }

	    case KMceAvcLevel13BitrateBps:

	        {

	        status = SetAllowedBitrates( KMceAvcCodecProfileIdBaseline |

	                                     KMceAvcCodecProfileIopConstraintSet | 

	                                     KMceAvcBitrateLevel1_3 );

	        break;

	        }

	    case KMceAvcLevel2BitrateBps:

	        {

	        status = SetAllowedBitrates( KMceAvcCodecProfileIdBaseline |

	                                     KMceAvcCodecProfileIopConstraintSet | 

	                                     KMceAvcBitrateLevel2 );

	        break;

	        }

        default:

            {

            status = KErrNotSupported;

            break;

            }

	    }

    return status;

    }

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

// CMceComAvcCodec::ResolveAllowedBitrates

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

//

TInt CMceComAvcCodec::ResolveAllowedBitrates( 

    TUint aBitrate, TUint& aAllowedBitrates )

    {

    TInt retVal( KErrNone );

    if ( aBitrate <= KMceAvcLevel1BitrateBps )

        {

        aAllowedBitrates =  KMceAvcCodecProfileIdBaseline | 

	                        KMceAvcCodecProfileIopConstraintSet | 

	                        KMceAvcBitrateLevel1;

        }

    else if ( aBitrate <= KMceAvcLevel1bBitrateBps )

        {

        aAllowedBitrates =  KMceAvcCodecProfileIdBaseline | 

	                        KMceAvcCodecProfileIopConstraintSet | 

	                        KMceAvcBitrateLevel1b;

        }

    else if ( aBitrate <= KMceAvcLevel11BitrateBps )

        {

        aAllowedBitrates =  KMceAvcCodecProfileIdBaseline | 

	                        KMceAvcCodecProfileIopConstraintSet | 

	                        KMceAvcBitrateLevel1_1;

        }

    else if ( aBitrate <= KMceAvcLevel12BitrateBps )

        {

        aAllowedBitrates =  KMceAvcCodecProfileIdBaseline | 

	                        KMceAvcCodecProfileIopConstraintSet | 

	                        KMceAvcBitrateLevel1_2;

        }

    else if ( aBitrate <= KMceAvcLevel13BitrateBps )

        {

        aAllowedBitrates =  KMceAvcCodecProfileIdBaseline | 

	                        KMceAvcCodecProfileIopConstraintSet | 

	                        KMceAvcBitrateLevel1_3;

        }

    else if ( aBitrate <= KMceAvcLevel2BitrateBps )

        {

        aAllowedBitrates =  KMceAvcCodecProfileIdBaseline | 

	                        KMceAvcCodecProfileIopConstraintSet | 

	                        KMceAvcBitrateLevel2;

        }    

    else 

        {

        retVal = KErrNotSupported;

        }

    return retVal;

    }

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

// CMceComAvcCodec::Decodes

// For AVC, fmtp value contains profile level and packetization mode 

// information which need to be taken in count (same codec cannot be

// used for different levels or packetization modes). If less strict matching

// is used, profile level is ignored but packetization mode is still checked

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

//

TBool CMceComAvcCodec::Decodes( 

    const TDesC8& aRtpmapValue, 

    const TDesC8& aFmtpValue,

    TBool aIsStrictMatch )

    {

    TBool decodes = CMceComCodec::Decodes( aRtpmapValue, aFmtpValue, aIsStrictMatch );

    if ( decodes )

        {

        TPtrC8 existingFmtpVal = FmtpAttr();

        TPtrC8 packetizationMode = ParsePacketizationMode( aFmtpValue );

        TPtrC8 existingPacketizationMode = ParsePacketizationMode( existingFmtpVal );

        decodes = ( packetizationMode.CompareF( existingPacketizationMode ) == 0 );

        if ( decodes && aIsStrictMatch )

            {

            TPtrC8 profileLevelId = ParseProfileLevelId( aFmtpValue );

            TPtrC8 existingProfileLevelId = ParseProfileLevelId( existingFmtpVal );

            decodes = ( profileLevelId.CompareF( existingProfileLevelId ) == 0 );

            }

        }

    return decodes;

    }

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

// CMceComAvcCodec::ParseProfileLevelId

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

//

TPtrC8 CMceComAvcCodec::ParseProfileLevelId( const TDesC8& aFmtpValue )

    {

    // Non-existing profile-level-id means level 1  

    TPtrC8 profileLevelIdVal = 

        GetFmtpAttributeValuePart( aFmtpValue, 

                                   KMceAvcProfileLevelIdFmtp(), 

                                   KMceAvcProfileLevelIdValLen, 

                                   KMceAvcProfileLevel1 );

    return profileLevelIdVal;

    }

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

// CMceComAvcCodec::ParseProfileLevelIdValPart

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

//

TPtrC8 CMceComAvcCodec::ParseProfileLevelIdValPart( 

    const TDesC8& aFmtpValue,

    TInt aValPartOffset,

    TInt aValPartLen,

    const TDesC8& aDefaultVal )

    {

    TPtrC8 profileLevelVal( aDefaultVal );

    TPtrC8 profileLevelIdVal = ParseProfileLevelId( aFmtpValue );

    if ( profileLevelIdVal.Length() >= aValPartOffset + aValPartLen )

        {

        // Take just value part

        profileLevelVal.Set( profileLevelIdVal.Mid( aValPartOffset, aValPartLen ) );

        }

    return profileLevelVal;

    }

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

// CMceComAvcCodec::ReplaceProfileLevelIdValuePart

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

//

TInt CMceComAvcCodec::ReplaceProfileLevelIdValuePart( 

    TDes8& aModifiedFmtp, 

    const TDesC8& aReplacement,

    TInt aValPartOffset )

    {

    TInt err( KErrArgument );

    TInt startIndex = aModifiedFmtp.FindF( KMceAvcProfileLevelIdFmtp() );

    startIndex = ( startIndex != KErrNotFound ) ? 

        ( startIndex + KMceAvcProfileLevelIdFmtp().Length() ) : startIndex;

    if ( startIndex != KErrNotFound && 

       ( startIndex + aValPartOffset + aReplacement.Length() ) <= aModifiedFmtp.Length() )

        {

        aModifiedFmtp.Replace( 

            startIndex + aValPartOffset, 

            aReplacement.Length(), 

            aReplacement );

        err = KErrNone;

        }

    return err;

    }

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

// CMceComAvcCodec::ParsePacketizationMode

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

//

TPtrC8 CMceComAvcCodec::ParsePacketizationMode( const TDesC8& aFmtpValue )

    {

    // Non-existing packetization mode means single nal mode

    TPtrC8 packetizationModeVal =

        GetFmtpAttributeValuePart( aFmtpValue, 

                                   KMceAvcPacketizationModeFmtp(), 

                                   KMceAvcPacketizationModeValLen, 

                                   KMceAvcPacketizationModeSingleNal );

    return packetizationModeVal;

    }

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

// CMceComAvcCodec::GetFmtpAttributeValuePart

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

//

TPtrC8 CMceComAvcCodec::GetFmtpAttributeValuePart( 

    const TDesC8& aFmtpValue,

    const TDesC8& aFmtpAttributeName, 

    TInt aValLen, 

    const TDesC8& aDefaultVal )

    {

    TPtrC8 outputValuePart( aDefaultVal );

    TInt valPos = aFmtpValue.FindF( aFmtpAttributeName );

    valPos = ( valPos != KErrNotFound ) ? 

                ( valPos + aFmtpAttributeName.Length() ) : valPos;

    if ( valPos != KErrNotFound && 

       ( valPos + aValLen ) <= aFmtpValue.Length() )

        {

        outputValuePart.Set( aFmtpValue.Mid( valPos, aValLen ) );

        }

    return outputValuePart;

    }

#ifdef MCE_COMMON_SERVER_SIDE

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

// CMceComAvcCodec::SetFmtpProposalL

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

//

TBool CMceComAvcCodec::SetFmtpProposalL( const TDesC8& aFmtpProposal )

    {

    HBufC8* proposal = aFmtpProposal.AllocL();

    delete iFmtpProposal;

    iFmtpProposal = proposal;

    CMccCodecInformationFactory* factory = CMccCodecInformationFactory::NewL();

    CleanupStack::PushL( factory );

    CMccCodecInformation* codec = 

        factory->CreateCodecInformationL( iSdpName );

    CleanupStack::PushL( codec );

    TRAPD( err, codec->SetFmtpAttrL( *iFmtpProposal ) );

    if ( err == KErrNoMemory )

        {

        User::Leave( err );

        }

    CleanupStack::PopAndDestroy( codec );

    CleanupStack::PopAndDestroy( factory );

    return ( err == KErrNone );

    }

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

// CMceComAvcCodec::SetFmtpFromIncomingSdpL