/*

* Copyright (c) 2005 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 "mcevideostream.h"

#include "mcecomvideostream.h"

#include "mcecomvideocodec.h"

#include "mcecommediasource.h"

#include "mcecommediasink.h"

#include "mceserial.h"

#include "mceevents.h"

#include "cleanupresetanddestroy.h"

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

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

// CMceComVideoStream::NewL

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

//

CMceComVideoStream* CMceComVideoStream::NewL()

    {

    CMceComVideoStream* self = NewLC();

    CleanupStack::Pop( self );

    return self;

    }

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

// CMceComVideoStream::NewLC

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

//

CMceComVideoStream* CMceComVideoStream::NewLC()

    {

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

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CMceComVideoStream::~CMceComVideoStream

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

//

CMceComVideoStream::~CMceComVideoStream()

    {

    iCodecs.ResetAndDestroy();

    }

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

// CMceComVideoStream::CMceComVideoStream

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

//

CMceComVideoStream::CMceComVideoStream()

    :CMceComMediaStream( KMceVideo )

    {

    }

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

// CMceComVideoStream::AddCodecL

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

//

void CMceComVideoStream::AddCodecL( CMceComCodec* aCodec )

    {

    __ASSERT_ALWAYS( aCodec, User::Leave( KErrArgument ) );

    CMceComVideoCodec* codec = static_cast< CMceComVideoCodec* >( aCodec );

    iCodecs.AppendL( codec );

    }

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

// CMceComVideoStream::RemoveCodecL

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

//

void CMceComVideoStream::RemoveCodecL( CMceComCodec* aCodec )

    {

    TInt index = FindCodecFromList( aCodec );

    if ( index >= 0 )

    	{

    	RemoveCodecFromListL( index );

    	}

    delete aCodec;

    }

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

// CMceComVideoStream::CodecL

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

//

CMceComVideoCodec* CMceComVideoStream::CodecL( TInt aIndex ) const

	{

	__ASSERT_ALWAYS( aIndex >= 0 && aIndex < iCodecs.Count(),

		User::Leave( KErrArgument ) );

	return iCodecs[aIndex];

	}

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

// CMceComVideoStream::CodecCount

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

//

TInt CMceComVideoStream::CodecCount() const

	{

	return iCodecs.Count();

	}

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

// CMceComVideoStream::Codecs

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

//

const RPointerArray<CMceComVideoCodec>& CMceComVideoStream::Codecs() const

    {

    return iCodecs;

    }

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

// CMceComVideoStream::FindCodecL

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

//

CMceComCodec* CMceComVideoStream::FindCodecL( CMceComCodec& aCodec )

    {

    CMceComCodec* foundCodec = NULL;

    CMceComVideoCodec* codec = static_cast< CMceComVideoCodec* >( &aCodec );

    TInt index = FindCodecFromList( codec );

    if ( index == KErrNotFound )

        {

        const TInt codecCount = CodecCount();

        for ( TInt i = 0; i < codecCount && !foundCodec; ++i )

            {

            // Video codec may be identified also based on fmtp

            if ( CodecL( i )->Decodes( aCodec.iSdpName, aCodec.FmtpAttr() ) )

                {

                foundCodec = CodecL( i );

                }     

            }

        }

    else

        {

        foundCodec = CodecL( index );

        }

    return foundCodec;

    }

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

// CMceComVideoStream::FindCodecFromList

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

//

TInt CMceComVideoStream::FindCodecFromList( CMceComCodec* aCodec ) const

	{

	CMceComVideoCodec* codec = static_cast< CMceComVideoCodec* >( aCodec );

	return iCodecs.Find( codec );

	}

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

// CMceComVideoStream::RemoveCodecFromListL

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

//

void CMceComVideoStream::RemoveCodecFromListL( TInt aIndex )

	{

	__ASSERT_ALWAYS( aIndex >= 0 && aIndex < iCodecs.Count(),

		User::Leave( KErrArgument ) );

	iCodecs.Remove( aIndex );

	}

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

// CMceComVideoStream::DestroyCodecs

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

//

void CMceComVideoStream::DestroyCodecs()

	{

	iCodecs.ResetAndDestroy();

	}

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

// CMceComVideoStream::InternalizeFlatL

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

//

void CMceComVideoStream::InternalizeFlatL( RReadStream& aReadStream )

    {

    CMceComMediaStream::InternalizeFlatL( aReadStream );

    }

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

// CMceComVideoStream::ExternalizeFlatL

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

//

void CMceComVideoStream::ExternalizeFlatL( RWriteStream& aWriteStream )

    {

    CMceComMediaStream::ExternalizeFlatL( aWriteStream );

    }

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

// CMceComVideoStream::InternalizeL

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

//

void CMceComVideoStream::InternalizeL( MMceComSerializationContext& aSerCtx )

    {

    CMceComMediaStream::InternalizeL( aSerCtx );

    TMceVideoStreamSerializer<CMceComVideoStream> serial( *this );

    serial.InternalizeL( aSerCtx );

    }

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

// CMceComVideoStream::ExternalizeL

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

//

void CMceComVideoStream::ExternalizeL( MMceComSerializationContext& aSerCtx )

    {

    CMceComMediaStream::ExternalizeL( aSerCtx );

    TMceVideoStreamSerializer<CMceComVideoStream> serial( *this );

    serial.ExternalizeL( aSerCtx );

    }

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

// CMceComVideoStream::CloneL

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

//

CMceComMediaStream* CMceComVideoStream::CloneL()

    {

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

    CleanupStack::PushL( copy );

    copy->ConstructL( *this );

    CleanupStack::Pop( copy );

    return copy;

    }

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

// CMceComVideoStream::ConstructL

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

//

void CMceComVideoStream::ConstructL()

    {

    CMceComMediaStream::ConstructL();

    }

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

// CMceComVideoStream::ConstructL

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

//

void CMceComVideoStream::ConstructL( CMceComVideoStream& aStream )

    {

    CMceComMediaStream::ConstructL( aStream );

    const TInt codecCount = aStream.CodecCount();

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

        {

        CMceComVideoCodec* codec = aStream.CodecL( i )->CloneL();

        CleanupStack::PushL( codec );

        AddCodecL( codec );

        CleanupStack::Pop( codec );

        }

    }

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

// CMceComVideoStream::ConstructL

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

//

void CMceComVideoStream::InitializeL( CMceComSession& aParent )

    {

    CMceComMediaStream::InitializeL( aParent );

	const TInt codecCount = CodecCount();

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

        {

        CodecL( i )->InitializeL( *this );

        }

    }

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

// CMceComVideoStream::UpdateL

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

//

void CMceComVideoStream::UpdateL( CMceComMediaStream& aStream )

    {

    CMceComMediaStream::UpdateL( aStream );

    CMceComVideoStream* stream = static_cast< CMceComVideoStream* >( &aStream );

    RPointerArray<CMceComVideoCodec> updated;

    MceCleanupResetAndDestroyPushL( updated );

    for( TInt i = 0; i < stream->CodecCount() ; ++i )

        {

        CMceComVideoCodec* update = stream->CodecL( i );

        TBool isUpdated = EFalse;

        TInt j = 0;

        while( !isUpdated && j < CodecCount() )

            {

            CMceComVideoCodec* codec = CodecL( j );

            if ( codec->Id() == update->Id() )

                {

                codec->UpdateL( *update );

                stream->RemoveCodecFromListL( i );

                delete update;

                updated.AppendL( codec );

                RemoveCodecFromListL( j );

                i--;

                isUpdated = ETrue;

                }

            j++;                

            }

        }

    if ( CodecCount() > 0 )	// Codecs have been removed

        {

        Session()->IsStructureChanged() = ETrue;

        }

    DestroyCodecs();

    while( updated.Count() > 0 )

        {

        AddCodecL( updated[0] );

        updated.Remove( 0 );

        }

    CleanupStack::PopAndDestroy();	// updated

    if ( stream->CodecCount() > 0 )	// Streams have been added

        {

        Session()->IsStructureChanged() = ETrue;

        while( stream->CodecCount() > 0 )

            {

            CMceComVideoCodec* add = stream->CodecL( 0 );

            AddCodecL( add );

            stream->RemoveCodecFromListL( 0 );

            }

        }

    }

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

// CMceComVideoStream::ReorderCodecs

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

//

void CMceComVideoStream::ReorderCodecs()

    {

    TLinearOrder<CMceComVideoCodec> order( CMceComVideoCodec::CompareSdpIndex );

    iCodecs.Sort( order );

    }

#ifdef MCE_COMMON_SERVER_SIDE

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

// CMceComVideoStream::SynchronizeL

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

//

void CMceComVideoStream::SynchronizeL( TBool aRoleAnswerer )

    {

    TInt codecIndex( 0 );

    while ( codecIndex < CodecCount() )

        {

        CMceComCodec& codec = *CodecL( codecIndex );

        TBool remove( !codec.iIsNegotiated && aRoleAnswerer );

        if ( BoundStream() )

            {

            CMceComCodec* sync = BoundStreamL().FindCodecL( codec );

            if ( remove )

                {

                BoundStreamL().RemoveCodecL( sync );

                }

            else if ( sync )

                {

                sync->SynchronizeL( codec, aRoleAnswerer );

                }

            else if ( aRoleAnswerer )

                {

                MCE_DEFINE_VIDEO_CODEC( videoCodec, codec );

                CMceComVideoCodec* copy = videoCodec.CloneL();

                CleanupStack::PushL( copy );

                copy->InitializeL( BoundStreamL() );

                MCE_VIDEO( BoundStreamL() ).AddCodecL( copy );

                CleanupStack::Pop( copy );

                copy->SynchronizeL( codec, aRoleAnswerer );

                }

            else

                {

                //NOP

                }

            }

        if ( remove )

            {

            RemoveCodecL( &codec );

            }

        else

            {

            codecIndex++;

            }

        }

    }

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

// CMceComAudioStream::UpdateDefaultCodecL

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

//

void CMceComVideoStream::UpdateDefaultCodecL()

    {

    CMceComCodec* highestPrioritySendCodec = NULL;

    CMceComCodec* codec = NULL;

    const RPointerArray< CMceComCodec >& allCodecs =

    	reinterpret_cast< const RPointerArray< CMceComCodec >& >( Codecs() );

    CMceComCodec::TIterator codecs( allCodecs, 

                                    CMceComCodec::TIterator::EFilterIsNegotiated );

    MCE_ITERATOR_FIND_NEXT( codecs, highestPrioritySendCodec, 

                            highestPrioritySendCodec->SendSupported() );

    // If no negotiated send codecs, disable all.

    // If send codec changed, enable new one and disable other send codecs.                                     

    if ( !highestPrioritySendCodec ||

       ( highestPrioritySendCodec &&

         !highestPrioritySendCodec->iIsEnabled ) )

        {

        CMceComCodec* newDefaultCodec = NULL;

        codecs.Reset();

        codecs.SetFilter( CMceComCodec::TIterator::EFilterNone );

        while( codecs.Next( codec ) )

            {

            if ( !newDefaultCodec && codec->iIsNegotiated && codec->SendSupported() )

                {

                codec->SetEnabled( ETrue );

                newDefaultCodec = codec;

                }

            else

                {

                codec->SetEnabled( EFalse );

                }

            }

        // Enable also new codecs of associated local streams

        UpdateDefaultCodecForAssociatedLocalL( newDefaultCodec );    

        }

    }

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

// CMceComVideoStream::UpdateDefaultCodecForAssociatedLocalL

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

//

void CMceComVideoStream::UpdateDefaultCodecForAssociatedLocalL( 

    CMceComCodec* aNewDefaultCodec )

    {

    CMceComCodec* codec = NULL;

    if ( aNewDefaultCodec && Session() )

        {

        for ( TInt i = 0; i < Session()->Streams().Count(); i++ )

            {

            if ( Session()->Streams()[ i ]->iType == KMceVideo )

                {

                CMceComVideoStream* videoStream = static_cast<CMceComVideoStream*>( 

                    Session()->Streams()[ i ] );

                const RPointerArray< CMceComCodec >& allCodecs =

    	            reinterpret_cast< const RPointerArray< CMceComCodec >& >( 

    	                videoStream->Codecs() );

    	        // Enabling

                CMceComCodec::TIterator codecs( allCodecs, 

                    CMceComCodec::TIterator::EFilterAssociatedLocal, aNewDefaultCodec );

                while( codecs.Next( codec ) )

                    {

                    codec->SetEnabled( ETrue );

                    }

                // Disabling    

                codecs.Reset();