/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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 FILES

#include "cusbpnpacket.h"

#include "usbpndefinitions.h"

#include "usbpntrace.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "cusbpnpacketTraces.h"

#endif

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// ============================= LOCAL FUNCTIONS ===============================

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

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

// CUsbPnPacket::CUsbPnPacket

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

CUsbPnPacket::CUsbPnPacket( CUsbPnPacket* aPacket, TInt aNum )

    /*lint -e1927 disabled because all variables are initialized after construction */

    : iBuffer(NULL)

    , iNumber( aNum )

    /*lint -restore */

    {

    OstTraceExt2( TRACE_NORMAL, CUSBPNPACKET_CUSBPNPACKET_ENTRY, "CUsbPnPacket::CUsbPnPacket;aPacket=%x;aNum=%d", ( TUint )( aPacket ), aNum );

    C_TRACE((_T("CUsbPnPacket::CUsbPnPacket(0x%x, aNum %d)"), aPacket, aNum));

    if(aPacket != NULL)

        {

        // Link the packet to the list.

        iNextPacket = aPacket->iNextPacket;

        aPacket->iNextPacket = this;

        }

    else

        {

        // Create a circular buffer.

        iNextPacket = this;

        }

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_CUSBPNPACKET_EXIT, "CUsbPnPacket::CUsbPnPacket - return void" );

    C_TRACE((_T("CUsbPnPacket::CUsbPnPacket - return void")));

    }

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

// CUsbPnPacket::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CUsbPnPacket::ConstructL()

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_CONSTRUCTL_ENTRY, "CUsbPnPacket::ConstructL" );

    C_TRACE( ( _T( "CUsbPnPacket::ConstructL()" ) ) );

    iBuffer = HBufC8::NewL( KPnPacketSize );

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_CONSTRUCTL_EXIT, "CUsbPnPacket::ConstructL - return void" );

    C_TRACE( ( _T( "CUsbPnPacket::ConstructL() - return void" ) ) );

    }

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

// CUsbPnPacket::NewL

// Two-phased constructor.

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

//

CUsbPnPacket* CUsbPnPacket::NewL( CUsbPnPacket* aPacket, TInt aNum )

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_NEWL_ENTRY, "CUsbPnPacket::NewL" );

    C_TRACE( ( _T( "CUsbPnPacket::NewL( )" ) ) );

    CUsbPnPacket* self = new( ELeave ) CUsbPnPacket( aPacket, aNum );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    OstTrace1( TRACE_NORMAL, CUSBPNPACKET_NEWL_EXIT, "CUsbPnPacket::NewL - return;self=%x", self );

    C_TRACE( ( _T( "CUsbPnPacket::NewL() - return 0x%x" ), self ) );

    return self;

    }

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

// CUsbPnPacket::~CUsbPnPacket

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

CUsbPnPacket::~CUsbPnPacket()

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_CUSBPNPACKET_DESTRUCTOR_ENTRY, "CUsbPnPacket::~CUsbPnPacket" );

    C_TRACE((_T("CUsbPnPacket::~CUsbPnPacket()")));

    OstTrace1( TRACE_NORMAL, CUSBPNPACKET_CUSBPNPACKET_DESTRUCTOR, "CUsbPnPacket::~CUsbPnPacket deleting packet: %d", iNumber );

    C_TRACE((_T("CUsbPnPacket::~CUsbPnPacket() deleting packet: %d"), iNumber));

    if( iBuffer )

        {

        delete iBuffer;

        }

    iBuffer = NULL;

    iNextPacket = NULL;

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_CUSBPNPACKET_DESTRUCTOR_EXIT, "CUsbPnPacket::~CUsbPnPacket - return void" );

    C_TRACE((_T("CUsbPnPacket::~CUsbPnPacket - return void")));

    }

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

// CUsbPnPacket::NextPacket

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

CUsbPnPacket& CUsbPnPacket::NextPacket() const

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_NEXTPACKET_ENTRY, "CUsbPnPacket::NextPacket" );

    OstTrace1( TRACE_NORMAL, CUSBPNPACKET_NEXTPACKET_EXIT, "CUsbPnPacket::NextPacket - return;CUsbPnPacket*=%x", iNextPacket );

    C_TRACE((_T("CUsbPnPacket::NextPacket()")));

    C_TRACE((_T("CUsbPnPacket::NextPacket - return CUsbPnPacket* 0x%x"), iNextPacket));

    return *iNextPacket;

    }

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

// CUsbPnPacket::Buffer

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

HBufC8& CUsbPnPacket::Buffer() const

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_BUFFER_ENTRY, "CUsbPnPacket::Buffer" );

    OstTrace1( TRACE_NORMAL, CUSBPNPACKET_BUFFER_EXIT, "CUsbPnPacket::Buffer - return;HBufC8* iBuffer=%x", iBuffer );

    C_TRACE((_T("CUsbPnPacket::Buffer()")));

    C_TRACE((_T("CUsbPnPacket::Buffer - return HBufC8* iBuffer 0x%x"), iBuffer));

    return *iBuffer;

    }

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

// CUsbPnPacket::PacketInUse

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

TBool CUsbPnPacket::PacketInUse() const

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_PACKETINUSE_ENTRY, "CUsbPnPacket::PacketInUse" );

    C_TRACE((_T("CUsbPnPacket::PacketInUse()")));

    TBool isInUse( EFalse );

    TPtr8 ptr(iBuffer->Des());

    if( ptr.Length() > 0 )

        {

        isInUse = ETrue;

        }

    else

        {

        isInUse = EFalse;

        }

    OstTrace1( TRACE_NORMAL, CUSBPNPACKET_PACKETINUSE_EXIT, "CUsbPnPacket::PacketInUse - return TBool %d", isInUse );

    C_TRACE((_T("CUsbPnPacket::PacketInUse - return TBool %d"), isInUse));

    return isInUse;

    }

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

// CUsbPnPacket::PacketNumber

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

TInt CUsbPnPacket::PacketNumber() const

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_PACKETNUMBER_ENTRY, "CUsbPnPacket::PacketNumber" );

    OstTrace1( TRACE_NORMAL, CUSBPNPACKET_PACKETNUMBER_EXIT, "CUsbPnPacket::PacketNumber - return TInt %d", iNumber );

    C_TRACE((_T("CUsbPnPacket::PacketNumber()")));

    C_TRACE((_T("CUsbPnPacket::PacketNumber - return TInt %d"),iNumber));

    return iNumber;

    }

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

// CUsbPnPacket::ReleaseL

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

void CUsbPnPacket::ReleaseL()

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_RELEASEL_ENTRY, "CUsbPnPacket::ReleaseL" );

    C_TRACE((_T("CUsbPnPacket::ReleaseL()")));

    TPtr8 ptr(iBuffer->Des());

    if(ptr.Length() > KPnPacketSize )

        {

        E_TRACE((_T("CUsbPnPacket::ReleaseL() - Returning to normal size")));

        delete iBuffer;

        iBuffer = NULL;

        iBuffer = HBufC8::NewL( KPnPacketSize );

        }

    else

        {

        ptr.FillZ();

        ptr.SetLength( 0 );

        }

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_RELEASEL_EXIT, "CUsbPnPacket::ReleaseL - return void" );

    C_TRACE((_T("CUsbPnPacket::ReleaseL() - return void")));

    }

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

// CUsbPnPacket::ReallocBufferL

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

void CUsbPnPacket::ReallocBufferL( const TInt aNeededLength )

    {

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_REALLOCBUFFERL_ENTRY, "CUsbPnPacket::ReallocBufferL" );

    C_TRACE((_T("CUsbPnPacket::ReallocBufferL()")));

    if(iBuffer)

        {

        delete iBuffer;

        iBuffer = NULL;

        }

    iBuffer = HBufC8::NewL( aNeededLength );

    OstTrace0( TRACE_NORMAL, CUSBPNPACKET_REALLOCBUFFERL_EXIT, "CUsbPnPacket::ReallocBufferL - return void" );

    C_TRACE((_T("CUsbPnPacket::ReallocBufferL() - return void")));

    }