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/*
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* Copyright (c) 2004-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Generic hid implementation
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*
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*/
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#include <e32std.h>
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#include "debug.h"
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#include "hidgeneric.h"
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#include "hidreportroot.h"
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#include "hidparser.h"
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#include "hiddriveritem.h"
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#include "hidconnectioninfo.h"
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// NewLC
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// ---------------------------------------------------------------------------
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//
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EXPORT_C CGenericHid* CGenericHid::NewLC(MTransportLayer* aTransportLayer)
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{
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TRACE_INFO((_L("[HID]\tCGenericHid::NewLC(0x%08x)"), aTransportLayer));
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CGenericHid* self = new (ELeave) CGenericHid(aTransportLayer);
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CleanupStack::PushL(self);
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self->ConstructL();
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return self;
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}
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// ---------------------------------------------------------------------------
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// NewL
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// ---------------------------------------------------------------------------
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//
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EXPORT_C CGenericHid* CGenericHid::NewL(MTransportLayer* aTransportLayer)
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{
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TRACE_INFO((_L("[HID]\tCGenericHid::NewL(0x%08x)"), aTransportLayer));
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CGenericHid* self = NewLC(aTransportLayer);
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CleanupStack::Pop();
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return self;
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}
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// ---------------------------------------------------------------------------
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// ConstructL()
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::ConstructL()
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{
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TRACE_INFO(_L("[HID]\tCGenericHid::ConstructL()"));
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TRACE_INFO(_L("[HID]\tCGenericHid::ConstructL(): Creating Parser..."));
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iParser = CParser::NewL();
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iInputHandlingReg = CHidInputDataHandlingReg::NewL();
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}
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// ---------------------------------------------------------------------------
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// CGenericHid()
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// ---------------------------------------------------------------------------
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//
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CGenericHid::CGenericHid(MTransportLayer* aTransportLayer) :
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iDriverList(_FOFF(CDriverListItem, iSlink)),
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iTransportLayer(aTransportLayer)
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{
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}
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// ---------------------------------------------------------------------------
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// Destructor
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// ---------------------------------------------------------------------------
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//
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CGenericHid::~CGenericHid()
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{
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TRACE_FUNC_ENTRY
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RemoveDrivers();
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iConnectionInfo.ResetAndDestroy();
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iConnectionInfo.Close();
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delete iInputHandlingReg;
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delete iParser;
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REComSession::FinalClose();
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TRACE_FUNC_EXIT
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// CountryCodeL
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// ---------------------------------------------------------------------------
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//
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TUint CGenericHid::CountryCodeL(TInt aConnID)
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{
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// Pass the request through to the transport layer.
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return (iTransportLayer->CountryCodeL(aConnID));
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// VendorIdL
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// ---------------------------------------------------------------------------
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//
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TUint CGenericHid::VendorIdL(TInt aConnID)
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{
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// Pass the request through to the transport layer.
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return (iTransportLayer->VendorIdL(aConnID));
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// ProductIdL()
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// ---------------------------------------------------------------------------
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//
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TUint CGenericHid::ProductIdL(TInt aConnID)
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{
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// Pass the request through to the transport layer.
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return iTransportLayer->ProductIdL(aConnID);
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// SetProtocol
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::SetProtocolL(TInt aConnectionId, TUint16 aInterface,
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MDriverAccess::TProtocols aProtocol,
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CHidDriver* aDriver)
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{
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iTransportLayer->SetProtocolL(aConnectionId, static_cast<TUint16>(aProtocol),
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aInterface);
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CConnectionInfo* conninfo = SeekConnectionInfo( aConnectionId );
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if ( conninfo )
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{
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conninfo->SetLastCommandHandler(aDriver);
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}
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// GetProtocol
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::GetProtocolL(TInt aConnectionId,TUint16 aInterface)
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{
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iTransportLayer->GetProtocolL(aConnectionId, aInterface);
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// GetReport
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::GetReportL(TInt aConnectionId,
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TUint8 aReportId, TUint16 aInterface, TUint16 aLength)
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{
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iTransportLayer->GetReportL(aConnectionId, MDriverAccess::EInput, aReportId,
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aInterface, aLength);
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// SetReport()
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::SetReportL(TInt aConnectionId, TUint8 aReportId,
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MDriverAccess::TReportType aReportType, const TDesC8& aPayload,
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TUint16 aInterface, CHidDriver* aDriver)
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{
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iTransportLayer->SetReportL(aConnectionId, static_cast<TUint8>(aReportType),
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aReportId, aInterface, aPayload);
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CConnectionInfo* conninfo = SeekConnectionInfo( aConnectionId );
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if ( conninfo )
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{
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conninfo->SetLastCommandHandler(aDriver);
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}
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// DataOut()
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::DataOutL(TInt aConnectionId, TUint8 aReportId,
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const TDesC8& aPayload,
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TUint16 aInterface)
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{
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iTransportLayer->DataOutL(aConnectionId, aReportId, aInterface, aPayload);
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// GetIdle()
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::GetIdleL(TInt aConnectionId, TUint8 aReportId,
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TUint16 aInterface )
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{
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iTransportLayer->GetIdleL(aConnectionId, aReportId, aInterface);
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}
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// ---------------------------------------------------------------------------
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// From MDriverAccess
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// SetIdle()
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::SetIdleL(TInt aConnectionId, TUint8 aDuration,
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TUint8 aReportId, TUint16 aInterface, CHidDriver* aDriver)
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{
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iTransportLayer->SetIdleL(aConnectionId, aDuration, aReportId, aInterface);
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CConnectionInfo* conninfo = SeekConnectionInfo( aConnectionId );
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if ( conninfo )
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{
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conninfo->SetLastCommandHandler(aDriver);
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}
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}
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// ---------------------------------------------------------------------------
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// RemoveDrivers()
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// ---------------------------------------------------------------------------
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//
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void CGenericHid::RemoveDrivers()
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{
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TRACE_FUNC
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// Driver instances
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CDriverListItem* driverItem;
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while ( !iDriverList.IsEmpty() )
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{
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driverItem = iDriverList.Last();
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iDriverList.Remove( *driverItem );
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delete driverItem;
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}
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}
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// ---------------------------------------------------------------------------
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// From CHidTransport
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// Disconnected()
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// ---------------------------------------------------------------------------
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//
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TInt CGenericHid::Disconnected( TInt aConnectionId )
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{
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TRACE_FUNC_ENTRY
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TInt retVal = KErrNone;
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TSglQueIter<CDriverListItem> driverIter( iDriverList );
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driverIter.SetToFirst();
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CDriverListItem* driverItem = driverIter;
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while ( driverItem )
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{
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driverIter++;
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if ( driverItem->ConnectionId() == aConnectionId )
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{
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TRACE_INFO(_L("[HID]\tCGenericHid::Disconnected driver"));
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if (driverItem->Driver())
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{
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driverItem->Driver()->Disconnected(0);
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}
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// Remove it from the list of driver instances
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iDriverList.Remove(*driverItem);
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delete driverItem;
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driverItem = NULL;
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retVal = KErrNone;
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}
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driverItem = driverIter;
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TRACE_INFO(_L("[HID]\tCGenericHid::Disconnected next driver"));
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}
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TRACE_INFO(_L("[HID]\tCGenericHid::Disconnected remove connection info"));
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TInt count = iConnectionInfo.Count();
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for (TInt i = count-1 ; i>=0; i--)
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{
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TRACE_INFO((_L("[HID]\tCGenericHid::Disconnected remove connection info %d"),i));
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CConnectionInfo* conninfo = iConnectionInfo[i];
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TRACE_INFO((_L("[HID]\tCGenericHid::Disconnected remove connection info %d"),i));
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if ( conninfo->ConnectionID() == aConnectionId )
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{
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iConnectionInfo.Remove(i);
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delete conninfo;
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TRACE_INFO((_L("[HID]\tCGenericHid::Disconnected remove connection info %d removed"),i));
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}
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}
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TRACE_FUNC_EXIT
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return retVal;
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}
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// ---------------------------------------------------------------------------
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// From CHidTransport
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// ConnectedL
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// HID device has been connected. Attempt to find a driver that can
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// handle reports in the format specified by the report descriptor.
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// ---------------------------------------------------------------------------
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//
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TInt CGenericHid::ConnectedL( TInt aConnectionId, const TDesC8& aDescriptor )
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{
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TRACE_INFO((_L("[HID]\tCGenericHid::ConnectedL(%d, ...)"), aConnectionId))
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// Place the parsed report descriptor in the driver list item:
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TBool found = EFalse;
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CConnectionInfo* conninfo = SeekConnectionInfo( aConnectionId );
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if ( conninfo )
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{
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return KErrInUse;
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}
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CReportRoot* reportRoot = iParser->ParseL( aDescriptor );
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CleanupStack::PushL(reportRoot);
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TRACE_INFO(_L("[HID]\tCGenericHid::ConnectedL: evaluate driver array"));
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// Implementation info array
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RImplInfoPtrArray implInfoArray;
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REComSession::ListImplementationsL( KHidDriverPluginInterfaceUid, implInfoArray );
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CleanupClosePushL(implInfoArray);
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TRACE_INFO((_L("[HID]\tCGenericHid::ConnectedL: %d implementations found"), implInfoArray.Count()));
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TInt index = 0;
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TInt retVal = KErrHidNoDriver;
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TInt supportedfields = 0;
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CHidDriver* driver = NULL;
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for ( index = 0; index < implInfoArray.Count(); index++ )
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{
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// parse implementation UID
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CImplementationInformation* info = implInfoArray[ index ];
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TUid implUid = info->ImplementationUid();
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TRACE_INFO((_L("[HID]\tCGenericHid::ConnectedL: load plugin 0x%08x"),implUid ));
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// load driver
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// Trap so other drivers will be enumerated even if
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// this fails:
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TRAPD(retTrap, driver = CHidDriver::NewL( implUid, this ));
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if ( retTrap != KErrNone)
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{
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continue;
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}
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CleanupStack::PushL(driver);
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TRACE_INFO((_L("[HID]\tCGenericHid::ConnectedL: init plugin 0x%08x"),implUid ));
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driver->InitialiseL( aConnectionId );
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TInt ret = driver->CanHandleReportL( reportRoot );
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if (ret == KErrNone)
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{
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TRACE_INFO(_L("[HID]\tCGenericHid::ConnectedL(): found driver"));
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// Make a new driver list item:
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CDriverListItem* driverItem = new ( ELeave ) CDriverListItem( aConnectionId );
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CleanupStack::PushL( driverItem );
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driver->SetInputHandlingReg( iInputHandlingReg );
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supportedfields += driver->SupportedFieldCount();
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iDriverList.AddLast( *driverItem );
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CleanupStack::Pop( driverItem );
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driverItem->SetDriver( driver );
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CleanupStack::Pop( driver );
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retVal = KErrNone;
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found = ETrue;
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}
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else
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{
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CleanupStack::PopAndDestroy( driver );
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}
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}
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TRACE_INFO((_L("[HID]\tCGenericHid::ConnectedL Partial supported hid device supported %d in report %d&"),supportedfields,iParser->FieldCount()));
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if (supportedfields < iParser->FieldCount() && found )
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{
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TRACE_INFO(_L("[HID]\tCGenericHid::ConnectedL Partial supported hid device"));
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}
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implInfoArray.ResetAndDestroy();
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CleanupStack::PopAndDestroy(); // info
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if ( found )
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{
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TRACE_INFO(_L("[HID]\tCGenericHid::ConnectedL append connection info"));
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conninfo = CConnectionInfo::NewL(aConnectionId, reportRoot);
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CleanupStack::Pop(reportRoot); // ownership transfered to conninfo
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CleanupStack::PushL(conninfo);
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iConnectionInfo.AppendL(conninfo);
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CleanupStack::Pop(conninfo);
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}
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else
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{
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CleanupStack::PopAndDestroy(reportRoot);
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}
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return retVal;
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}
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// ---------------------------------------------------------------------------
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// From CHidTransport
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// DataIn
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// Determine which driver is handling this connection ID and pass the payload
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// reference to it
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// ---------------------------------------------------------------------------
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//
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TInt CGenericHid::DataIn(TInt aConnectionId,
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CHidTransport::THidChannelType aChannel, const TDesC8& aPayload)
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{
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TRACE_FUNC_ENTRY
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TInt retVal = KErrHidNoDriver;
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TInt ret = KErrNone;
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TSglQueIter<CDriverListItem> driverIter( iDriverList );
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driverIter.SetToFirst();
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CDriverListItem* item = driverIter;
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TBool found = EFalse;
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while ( item )
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{
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if ( item->ConnectionId() == aConnectionId )
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{
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ret = item->Driver()->DataIn( aChannel, aPayload );
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if (ret == KErrNone)
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{
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TRACE_INFO(_L("[HID]\tCGenericHid::DataIn command handled"));
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found = ETrue;
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retVal = KErrNone;
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}
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}
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TRACE_INFO(_L("[HID]\tCGenericHid::DataIn next driver"));
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driverIter++;
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item = driverIter;
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}
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if ( !found && aChannel == CHidTransport::EHidChannelCtrl )
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{
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retVal = KErrNone;
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}
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iInputHandlingReg->Reset();
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TRACE_FUNC_EXIT
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|
433 |
return retVal;
|
|
434 |
}
|
|
435 |
|
|
436 |
|
|
437 |
// ---------------------------------------------------------------------------
|
|
438 |
// ReportDescriptor
|
|
439 |
// Provides access to the parsed results to the factory
|
|
440 |
// ---------------------------------------------------------------------------
|
|
441 |
//
|
|
442 |
CReportRoot* CGenericHid::ReportDescriptor(TInt aConnectionId)
|
|
443 |
{
|
|
444 |
CConnectionInfo* conninfo = SeekConnectionInfo( aConnectionId );
|
|
445 |
if ( conninfo )
|
|
446 |
{
|
|
447 |
return conninfo->ReportRoot();
|
|
448 |
}
|
|
449 |
return NULL;
|
|
450 |
}
|
|
451 |
|
|
452 |
// ---------------------------------------------------------------------------
|
|
453 |
// From CHidTransport
|
|
454 |
// DriverActive()
|
|
455 |
// ---------------------------------------------------------------------------
|
|
456 |
//
|
|
457 |
TInt CGenericHid::DriverActive(TInt aConnectionId,
|
|
458 |
CHidTransport::TDriverState aActive)
|
|
459 |
{
|
|
460 |
TRACE_FUNC_ENTRY
|
|
461 |
TInt retVal = KErrHidNoDriver;
|
|
462 |
// Find the driver handling the connection and stop it
|
|
463 |
TSglQueIter<CDriverListItem> driverIter( iDriverList );
|
|
464 |
driverIter.SetToFirst();
|
|
465 |
CDriverListItem* item = driverIter;
|
|
466 |
|
|
467 |
while ( item )
|
|
468 |
{
|
|
469 |
TRACE_INFO(_L("[HID]\tCGenericHid::DriverActive"));
|
|
470 |
if ( item->ConnectionId() == aConnectionId && item->Driver() )
|
|
471 |
{
|
|
472 |
TRACE_INFO(_L("[HID]\tCGenericHid::DriverActive driver found"));
|
|
473 |
if ( aActive == CHidTransport::EActive )
|
|
474 |
{
|
|
475 |
TRAP(retVal, item->Driver()->StartL( aConnectionId ));
|
|
476 |
if (retVal != KErrNone)
|
|
477 |
{
|
|
478 |
break;
|
|
479 |
}
|
|
480 |
}
|
|
481 |
else if ( aActive == CHidTransport::ESuspend)
|
|
482 |
{
|
|
483 |
item->Driver()->Stop();
|
|
484 |
retVal = KErrNone;
|
|
485 |
}
|
|
486 |
}
|
|
487 |
driverIter++;
|
|
488 |
item = driverIter;
|
|
489 |
}
|
|
490 |
TRACE_FUNC_EXIT
|
|
491 |
return retVal;
|
|
492 |
}
|
|
493 |
|
|
494 |
// ---------------------------------------------------------------------------
|
|
495 |
// CommandResult()
|
|
496 |
// ---------------------------------------------------------------------------
|
|
497 |
//
|
|
498 |
void CGenericHid::CommandResult(TInt aConnectionId, TInt aCmdAck)
|
|
499 |
{
|
|
500 |
// Get the driver handling this connection
|
|
501 |
CConnectionInfo* conninfo = SeekConnectionInfo( aConnectionId );
|
|
502 |
if ( conninfo )
|
|
503 |
{
|
|
504 |
CHidDriver* hiddriver = conninfo->ReturnLastCommandHandler();
|
|
505 |
if (hiddriver)
|
|
506 |
{
|
|
507 |
hiddriver->CommandResult(aCmdAck);
|
|
508 |
}
|
|
509 |
}
|
|
510 |
}
|
|
511 |
|
|
512 |
// ---------------------------------------------------------------------------
|
|
513 |
// SeekConnectionInfo()
|
|
514 |
// ---------------------------------------------------------------------------
|
|
515 |
//
|
|
516 |
CConnectionInfo* CGenericHid::SeekConnectionInfo(TInt aConnectionId)
|
|
517 |
{
|
|
518 |
TRACE_FUNC
|
|
519 |
CConnectionInfo* conninfo = NULL;
|
|
520 |
TInt count = iConnectionInfo.Count();
|
|
521 |
TRACE_INFO((_L("[HID]\tCGenericHid::SeekConnectionInfo count %d"), count));
|
|
522 |
for (TInt i = 0 ; i < count; i++)
|
|
523 |
{
|
|
524 |
conninfo = iConnectionInfo[i];
|
|
525 |
TRACE_INFO((_L("[HID]\tCGenericHid::SeekConnectionInfo connection info check %d %d"),aConnectionId, conninfo->ConnectionID()));
|
|
526 |
if ( conninfo->ConnectionID() == aConnectionId)
|
|
527 |
{
|
|
528 |
TRACE_INFO(_L("[HID]\tCGenericHid::SeekConnectionInfo connection info found"));
|
|
529 |
return conninfo;
|
|
530 |
}
|
|
531 |
}
|
|
532 |
return NULL;
|
|
533 |
}
|