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/****************************************************************************
**
** Copyright (C) 2016 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "EventFactory.h"
#include "foundation/Qt3DSFoundation.h"
#include "foundation/Qt3DSBroadcastingAllocator.h"
#include "foundation/StringTable.h"
#include "foundation/Utils.h"
using namespace qt3ds::evt;
typedef char TEventChar;
using qt3ds::QT3DSU32;
class CInitableRegisteredStr : public Qt3DSEventSystemRegisteredStr
{
public:
CInitableRegisteredStr(const TEventStr inString) { m_Data = inString; }
};
CFactory &CFactory::Create(qt3ds::NVFoundationBase &inFoundation)
{
return *QT3DS_NEW(inFoundation.getAllocator(), CFactory)(inFoundation);
}
CFactory::CFactory(qt3ds::NVFoundationBase &inFoundation)
: m_Foundation(inFoundation)
, m_Allocator(inFoundation.getAllocator(), "event factory allocator")
, m_StringTable(qt3ds::foundation::IStringTable::CreateStringTable(inFoundation.getAllocator()))
{
}
CFactory::~CFactory()
{
}
Qt3DSEventSystemEvent &CFactory::CreateEvent(int inNumData)
{
// Ensure num data is in range
inNumData = qt3ds::NVMax(0, inNumData);
// Ensure we can actually allocate something that big
QT3DSU32 dataSize = static_cast<QT3DSU32>(
qt3ds::NVMin((size_t)inNumData * sizeof(Qt3DSEventSystemEventData),
TEventAllocator::getSlabSize() - sizeof(Qt3DSEventSystemEvent)));
// get the actual num data after safety checks.
inNumData = (int)(dataSize / sizeof(Qt3DSEventSystemEventData));
QT3DSU32 allocSize = sizeof(Qt3DSEventSystemEvent) + inNumData * sizeof(Qt3DSEventSystemEventData);
Qt3DSEventSystemEvent *theEvent = (Qt3DSEventSystemEvent *)m_Allocator.allocate(
allocSize, "Event allocation", __FILE__, __LINE__);
theEvent->m_NumData = inNumData;
theEvent->m_Data = reinterpret_cast<Qt3DSEventSystemEventData *>(((qt3ds::QT3DSU8 *)theEvent)
+ sizeof(Qt3DSEventSystemEvent));
// Initialize the event data to zero so that a free event won't cause a calamity.
qt3ds::intrinsics::memZero(theEvent->m_Data, dataSize);
return *theEvent;
}
size_t CFactory::GetMaxNumEventData()
{
return m_Allocator.getSlabSize() - sizeof(Qt3DSEventSystemEvent);
}
size_t CFactory::GetMaxStrLength()
{
return m_Allocator.getSlabSize();
}
void CFactory::ReleaseOutstandingEvents()
{
m_Allocator.reset();
}
Qt3DSEventSystemRegisteredStr CFactory::RegisterStr(TEventStr inSrc)
{
return CInitableRegisteredStr(m_StringTable->RegisterStr(inSrc));
}
TEventStr CFactory::AllocateStr(TEventStr inSrc)
{
size_t theSizeInByte = sizeof(TEventChar) * (strlen(qt3ds::foundation::nonNull(inSrc)) + 1);
theSizeInByte = qt3ds::NVMin(theSizeInByte, TEventAllocator::getSlabSize());
TEventChar *theNewString = (TEventChar *)m_Allocator.allocate(
theSizeInByte, "Qt3DS::evt::CFactory::UnManagedString", __FILE__, __LINE__);
if (theNewString)
memcpy(theNewString, inSrc, theSizeInByte);
theNewString[theSizeInByte - 1] = 0;
return theNewString;
}
TEventStr CFactory::AllocateStr(int inLength)
{
++inLength;
int safeLen = (int)qt3ds::NVMin((size_t)inLength, TEventAllocator::getSlabSize());
// Either give the users what they ask for or return nothing.
if (safeLen != inLength)
return NULL;
void *retval = m_Allocator.allocate(inLength * sizeof(TEventChar),
"Qt3DS::evt::CFactory::UnManagedString", __FILE__, __LINE__);
qt3ds::intrinsics::memZero(retval, inLength);
return (TEventStr)retval;
}
void CFactory::Release()
{
this->~CFactory();
QT3DS_FREE(m_Foundation.getAllocator(), this);
}
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