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/****************************************************************************
**
** Copyright (C) 2008-2012 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#pragma once
#ifndef QT3DS_RENDER_SERIALIZATION_TYPES_H
#define QT3DS_RENDER_SERIALIZATION_TYPES_H
#include "EASTL/hash_map.h"
#include "foundation/Qt3DSDataRef.h"
#include "foundation/Qt3DSMemoryBuffer.h"
#include "foundation/Qt3DSContainers.h"
namespace qt3ds {
namespace foundation {
struct SStrRemapMap : public nvhash_map<char8_t *, QT3DSU32>
{
typedef nvhash_map<char8_t *, QT3DSU32> TBaseType;
SStrRemapMap(NVAllocatorCallback &inAlloc, const char *inName)
: TBaseType(inAlloc, inName)
{
}
};
struct SPtrOffsetMap : public nvhash_map<const void *, QT3DSU32>
{
typedef nvhash_map<const void *, QT3DSU32> TBaseType;
SPtrOffsetMap(NVAllocatorCallback &inAlloc, const char *inName)
: TBaseType(inAlloc, inName)
{
}
};
struct SWriteBuffer : public MemoryBuffer<>
{
SWriteBuffer(NVAllocatorCallback &inAlloc, const char *inName)
: MemoryBuffer<>(ForwardingAllocator(inAlloc, inName))
{
}
};
// Simple data reader that mimics a string
struct SDataReader
{
QT3DSU8 *m_CurrentPtr;
QT3DSU8 *m_EndPtr;
SDataReader(QT3DSU8 *inStartPtr, QT3DSU8 *inEndPtr)
: m_CurrentPtr(inStartPtr)
, m_EndPtr(inEndPtr)
{
}
template <typename TDataType>
TDataType *Load()
{
if ((m_CurrentPtr + sizeof(TDataType)) > m_EndPtr) {
QT3DS_ASSERT(false);
return NULL;
}
TDataType *theType = reinterpret_cast<TDataType *>(m_CurrentPtr);
m_CurrentPtr += sizeof(TDataType);
return theType;
}
template <typename TDataType>
void MemCopy(TDataType *dt, QT3DSU32 count)
{
if (count) {
QT3DSU32 loadSize = count * sizeof(TDataType);
QT3DSU32 amountLeft = (QT3DSU32)(m_EndPtr - m_CurrentPtr);
QT3DSU32 amountLoaded = NVMin(loadSize, amountLeft);
memCopy(dt, m_CurrentPtr, amountLoaded);
m_CurrentPtr += amountLoaded;
if (amountLoaded < loadSize) {
QT3DS_ASSERT(false);
QT3DSU8 *rawPtr = (QT3DSU8 *)dt;
rawPtr += amountLoaded;
size_t leftover = loadSize - amountLoaded;
// zeroing things out at least is an attempt to provide ordered
// data that may prevent a crash in some cases.
memZero(rawPtr, (QT3DSU32)leftover);
}
}
}
// Don't make a habit of using this a lot.
template <typename TDataType>
TDataType &LoadRef()
{
TDataType *retval = Load<TDataType>();
if (!retval)
QT3DS_ASSERT(false);
return *retval;
}
void Align(size_t alignment)
{
size_t offset = (size_t)(m_CurrentPtr);
if (offset % alignment)
m_CurrentPtr += (alignment - (offset % alignment));
}
void Align() { Align(sizeof(void *)); }
};
}
}
#endif
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