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Diffstat (limited to 'src/event/EventFactory.cpp')
-rw-r--r-- | src/event/EventFactory.cpp | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/event/EventFactory.cpp b/src/event/EventFactory.cpp new file mode 100644 index 0000000..4bf776c --- /dev/null +++ b/src/event/EventFactory.cpp @@ -0,0 +1,143 @@ +/**************************************************************************** +** +** 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); +} |