/*

* 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:  Implementation of media

*

*/

#include <mpxlog.h>

#include <mpxuser.h>

#include "mpxmedia.h"

#include "mpxmediaarray.h"

#include "mpxcollectionpath.h"

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

// CMPXMedia::NewL

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

//

EXPORT_C CMPXMedia* CMPXMedia::NewL()

    {

    CMPXMedia* m=new(ELeave)CMPXMedia();

    CleanupStack::PushL(m);

    m->CMPXMediaBase::ConstructL();

    CleanupStack::Pop(m);

    return m;

    }

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

// CMPXMedia::NewL

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

//

EXPORT_C CMPXMedia* CMPXMedia::NewL(const TArray<TInt>& aSupportedIds)

    {

    CMPXMedia* m=new(ELeave)CMPXMedia();

    CleanupStack::PushL(m);

    m->ConstructL(aSupportedIds);

    CleanupStack::Pop(m);

    return m;

    }

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

// CMPXMedia::NewL

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

//

EXPORT_C CMPXMedia* CMPXMedia::NewL(RReadStream& aStream)

    {

    CMPXMedia* m=new(ELeave)CMPXMedia();

    CleanupStack::PushL(m);

    m->ConstructL(aStream);

    CleanupStack::Pop(m);

    return m;

    }

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

// CMPXMedia::NewL

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

//

EXPORT_C CMPXMedia* CMPXMedia::NewL(TInt aDataHandle)

    {

    CMPXMedia* m=new(ELeave)CMPXMedia();

    CleanupStack::PushL(m);

    m->CMPXMediaBase::ConstructL(aDataHandle);

    CleanupStack::Pop(m);

    return m;

    }

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

// CMPXMedia::NewL

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

//

EXPORT_C CMPXMedia* CMPXMedia::NewL(const CMPXMedia& aMedia)

    {

    CMPXMedia* m=new(ELeave)CMPXMedia();

    CleanupStack::PushL(m);

    m->CMPXMediaBase::ConstructL(aMedia);

    CleanupStack::Pop(m);

    return m;

    }

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

// CMPXMedia::CopyL

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

//

EXPORT_C CMPXMedia* CMPXMedia::CopyL(const CMPXMedia& aMedia)

    {

    CMPXMedia* m=new(ELeave)CMPXMedia();

    CleanupStack::PushL(m);

    m->CopyConstructL(aMedia);

    CleanupStack::Pop(m);

    return m;

    }

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

// Overloaded assignment operator

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

//

EXPORT_C CMPXMedia& CMPXMedia::operator=(const CMPXMedia& aMedia)

    {

//    MPX_FUNC_EX("CMPXMedia::operator=()");

    MPX_ASSERT(aMedia.iData&&aMedia.iDataHandle);

    MPX_ASSERT(iClientHandle);

    //

    if (this!=&aMedia)

        {

        Clear();

        iDataHandle=aMedia.iDataHandle;

        iData=aMedia.iData;

        iData->AddRef(iClientHandle);

        } // otherwise assign itself

    return *this;

    }

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

// Destructor

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

//

EXPORT_C CMPXMedia::~CMPXMedia()

    {

    iAttributes.Close();

    }

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

// CMPXMedia::HeapMemoryInfoL

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

//

EXPORT_C void CMPXMedia::HeapMemoryInfoL( TInt& aTotal, TInt& aUsed )

    {

    return MMPXData::HeapMemoryInfoL( aTotal, aUsed);

    }

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

// Externalize

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

//

EXPORT_C void CMPXMedia::ExternalizeL(RWriteStream& aStream) const

    {

    DoExternalizeL(aStream,MMPXData::EMedia);

    }

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

// Internalize

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

//

EXPORT_C void CMPXMedia::InternalizeL(RReadStream& aStream)

    {

    DoInternalizeL(aStream,MMPXData::EMedia);

    }

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

// Clears data

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

//

EXPORT_C void CMPXMedia::Reset()

    {

//    MPX_FUNC_EX("CMPXMedia::Reset()");

    MPX_ASSERT(iClientHandle&&iData);

    //

    ResetLocal(); // Local data

    iData->Reset(iClientHandle); // Clears heap data for this object

    }

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

// Possible content IDs that denote the type of content the source of this

// object can supply;

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

//

EXPORT_C const TArray<TInt> CMPXMedia::SupportedIds() const

    {

    MPX_ASSERT(iClientHandle&&iData);

    return iData->SupportedIds(iClientHandle);

    }

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

// The attributes provided in this media object

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

//

EXPORT_C const TArray<TMPXAttribute> CMPXMedia::Attributes() const

    {

    const_cast<CMPXMedia*>(this)->RefreshAttributes();

    return iAttributes.Array();

    }

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

// Does this object contain the value for a given attribute

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

//

EXPORT_C TBool CMPXMedia::IsSupported(const TMPXAttribute& aAttribute) const

    {

    MPX_ASSERT(iClientHandle&&iData);

    return KErrNotFound!=iData->Index(iClientHandle,aAttribute);

    }

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

// The number of attribute values provided in this media object

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

//

EXPORT_C TInt CMPXMedia::Count() const

    {

    return CMPXMediaBase::Count();

    }

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

// The attribute for a specific index

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

//

EXPORT_C const TMPXAttribute& CMPXMedia::Attribute(TInt aIndex) const

    {

    MPX_ASSERT(iClientHandle&&iData);

    MPX_ASSERT(aIndex>=0&&aIndex<Count());

    //

    return iData->Attribute(iClientHandle,aIndex);

    }

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

// The attributes set for a specific content

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

//

EXPORT_C TUint CMPXMedia::AttributesSet(TInt aContentId) const

    {

    const_cast<CMPXMedia*>(this)->RefreshAttributes();

    TUint attributesSet(0);

    for (TInt i=iAttributes.Count();--i>=0;)

        {

        TMPXAttribute attr(iAttributes[i]);

        if (attr.ContentId()==aContentId)

            {

            attributesSet|=attr.AttributeId();

            }

        }

    return attributesSet;

    }

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

// The index of a given attribute

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

//

EXPORT_C TInt CMPXMedia::Index(const TMPXAttribute& aAttribute) const

    {

    MPX_ASSERT(iClientHandle&&iData);

    return iData->Index(iClientHandle,aAttribute);

    }

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

// The type of data stored for the attribute

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

//

EXPORT_C TMPXAttributeType CMPXMedia::Type(TInt aIndex) const

    {

    MPX_ASSERT(iClientHandle&&iData);

    MPX_ASSERT(aIndex>=0&&aIndex<Count());

    //

    return iData->AttributeType(iClientHandle,aIndex);

    }

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

// The type of data stored for the attribute

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

//

EXPORT_C TMPXAttributeType CMPXMedia::Type(const TMPXAttribute& aAttribute) const

    {

    MPX_ASSERT(iClientHandle&&iData);

    TMPXAttributeType type(EMPXTypeUnknown);

    TInt index(Index(aAttribute));

    if (KErrNotFound!=index)

        {

        type = Type(index);

        }

    return type;

    }

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

// The value for a specific attribute

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

//

EXPORT_C const TDesC& CMPXMedia::ValueText(const TMPXAttribute& aAttribute) const

    {

    TPtrC* text=Value<TPtrC>(aAttribute);

    return text?(const TDesC&)*text:KNullDesC;

    }

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

// Add a new attribute value to this object, or modifies existing

// value if already present

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

//

EXPORT_C  void CMPXMedia::SetTextValueL(

    const TMPXAttribute& aAttribute,

    const TDesC& aValue)

    {

    TPtrC8 data((TUint8*)aValue.Ptr(),aValue.Size());

    SetValueL(aAttribute,data,EMPXTypeText);

    }

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

// Merges in the attributes of the provided media

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

//

EXPORT_C void CMPXMedia::MergeMediaL( const CMPXMedia& aMedia )

    {

    // Do not merge the same data handle

    if( Data() != aMedia.Data() )

        {

        for ( TInt i = 0; i < aMedia.Count(); i++ )

            {

            TMPXAttributeType type( aMedia.Type( i ));

            TMPXAttribute att( aMedia.Attribute( i ));

            // Need to handle text differently since it's

            // possible to have KNullDesC, which will result

            // in an invalid TPtrC.

            if ( EMPXTypeText == type )

                {

                const TDesC& t( aMedia.ValueText( att ));

                if ( t == KNullDesC )

                    {

                    // Cannot use reference to KNullDesC, must

                    // use the literal directly.

                    SetTextValueL( att, KNullDesC );

                    }

                else

                    {

                    SetTextValueL( att, t );

                    }

                }

            else

                {

                TPtrC8 ptr( aMedia.iData->Value( aMedia.iClientHandle, i ));

                SetValueL( att, ptr, type );

                }

            }

        }

    }

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

// Compares if the specified media's attribute matches this one

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

//

EXPORT_C TBool CMPXMedia::Match(

    const CMPXMedia& aMedia,

    const TMPXAttribute& aAtt )

    {

    TBool result( EFalse );

    TInt myIndex( Index( aAtt ));

    if ( KErrNotFound != myIndex )

        {

        TInt index( aMedia.Index( aAtt ));

        if ( KErrNotFound != index )

            {

            if ( Type( myIndex ) == aMedia.Type( index ))

                {

                TPtrC8 myPtr( iData->Value( iClientHandle, myIndex ));

                TPtrC8 ptr( aMedia.iData->Value( aMedia.iClientHandle, index ));

                result = ( myPtr == ptr );

                }

            }

        }

    return result;

    }

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

// CMPXMedia::Delete

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

//

EXPORT_C void CMPXMedia::Delete(const TMPXAttribute& aAttribute)

    {

//    MPX_FUNC_EX("CMPXMedia::Delete(const TMPXAttribute& aAttribute)");

    Delete(iData->Index(iClientHandle,aAttribute));

    }

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

// CMPXMedia::Delete

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

//

EXPORT_C void CMPXMedia::Delete(TInt aIndex)

    {

//    MPX_FUNC_EX("CMPXMedia::Delete(TInt aIndex)");

    if (KErrNotFound != aIndex)

        {

        MPX_ASSERT(aIndex>=0&&aIndex<Count());

        DeleteLocal(aIndex);

        iData->Delete(iClientHandle,aIndex);

        } // do nothing. the same behaviour as the v1 although it should panic

    }

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

// CMPXMedia::ConstructL

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

//

void CMPXMedia::ConstructL(const TArray<TInt>& aSupportedIds)

    {

    CMPXMediaBase::ConstructL();

    User::LeaveIfError(iData->SetSupportedIds(iClientHandle,aSupportedIds));

    }

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

// CMPXMedia::ConstructL

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

//

void CMPXMedia::ConstructL(RReadStream& aStream)

    {

    MPX_ASSERT(!iData&&!iDataHandle);

    InternalizeL(aStream);

    }

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

// CMPXMedia::SetValueL

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

//

EXPORT_C void CMPXMedia::SetValueL(

    const TMPXAttribute& aAttribute,

    const TDesC8& aValue,

    TMPXAttributeType aType)

    {

    MPX_ASSERT(iData&&iClientHandle);

    //

    LockHeapLC();

    TInt i=iData->Index(iClientHandle,aAttribute);

    if (i==KErrNotFound)

        {

        User::LeaveIfError(iData->Append(iClientHandle,aAttribute,aType,aValue));

        }

     else

        {

        DeleteLocal(i);

        iData->Set(iClientHandle,aAttribute,aType,aValue,i);

        }

    CleanupStack::PopAndDestroy(); //unlock heap

    }

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

// CMPXMedia::ValuePtr. Returns NULL if (a) there is no such object with the

// given attribute; (b) object cannot be created (e.g. no memory); (c) it's an

// arbitrary CBase object (only CMPXMedia, CMPXMediaArray, and CMPXCollectionPath

// are supported. Otherwise, returns a pointer to the object which is also stored

// locally

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

//

EXPORT_C TAny* CMPXMedia::ValuePtr(const TMPXAttribute& aAttribute) const

    {

    MPX_ASSERT(iData&&iClientHandle);

    MMPXData::LockHeap( iClientHandle );

    TAny* obj=NULL;

    TInt index=iData->Index(iClientHandle,aAttribute);

    TMPXAttributeType type=EMPXTypeUnknown;

    if (index!=KErrNotFound) // Check if the value exist or not

        {

        type=iData->AttributeType(iClientHandle,index);

        // Check local values to see if there and current

        //

        TInt uid=iData->Uid(iClientHandle,index);

        const TValue* v=LocalValue(uid);

        if (!v)

            {

            TPtrC8 data=iData->Value(iClientHandle,index);

            TInt size=data.Size();

            const TAny* ptr=data.Ptr();

            //

            switch(type)

                {

            case EMPXTypeText:

                obj=new TPtrC((TUint16*)ptr,size/2);

                break;

                //

            case EMPXTypeCObject:

                TRAP_IGNORE(obj=ValueCObjectL(data));

                break;

                //

            case EMPXTypeError: // Error type is TInt, flow down

            case EMPXTypeTObject:

                //

                // Create a decriptor pointing to the data. But the pointer

                // within the descriptor must be returned by this method

                //

                 obj=new TPtrC8((TUint8*)ptr,size);

                break;

                //

            default:

                MPX_ASSERT(0);

                break;

                }

            if (obj)

                {

                CMPXMedia& theMedia=*const_cast<CMPXMedia*>(this);

                TInt err=theMedia.SetLocal(TValue(obj,uid,type)); // Add new one

                if (err!=KErrNone)

                    {

                    theMedia.DeletePtr(obj,type);

                    obj=NULL;

                    }

                }

            }

        else

            {

            obj=v->iValue;

            }

        }

    MMPXData::UnlockHeap(iClientHandle);

    return (type==EMPXTypeTObject||type==EMPXTypeError)?(obj?(TAny*)static_cast<TPtrC8*>(obj)->Ptr():NULL):obj;

    }

EXPORT_C TMPXAttributeType CMPXMedia::GetValue(const TMPXAttribute& aAttribute, TDes8& aValue) const

    {

    MPX_ASSERT(iData&&iClientHandle);

    MMPXData::LockHeap( iClientHandle );

    TInt index=iData->Index(iClientHandle,aAttribute);

    TMPXAttributeType type=EMPXTypeUnknown;

    if (index!=KErrNotFound) // Check if the value exist or not

        {

        type=iData->AttributeType(iClientHandle,index);

        aValue = iData->Value(iClientHandle,index).Left(aValue.MaxLength());

        }

    MMPXData::UnlockHeap(iClientHandle);

    return type;

    }

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

// CMPXMedia::RefreshAttributes