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#ifndef BLOBWRITE_H
#define BLOBWRITE_H
#include "Runtime/Serialize/TransferFunctions/TransferBase.h"
#include "Runtime/Serialize/SwapEndianBytes.h"
#include "Runtime/Animation/MecanimArraySerialization.h"
#include "offsetptr.h"
#include "BlobSize.h"
#include "ReduceCopyData.h"
#include <stack>
#include "Runtime/Modules/ExportModules.h"
class EXPORT_COREMODULE BlobWrite : public TransferBase
{
public:
typedef dynamic_array<UInt8, 16> container_type;
private:
container_type& m_Blob;
int m_TargetPlatform;
bool m_CopyData;
bool m_ReduceCopy;
bool m_Use64BitOffsetPtr;
bool m_SwapEndianess;
struct TypeContext
{
TypeContext(size_t root, size_t offset, UInt8* srcDataPtr,size_t srcDataSize):m_Root(root),m_Offset(offset),m_SourceDataPtr(srcDataPtr),m_SourceDataSize(srcDataSize) {}
size_t m_Root;
size_t m_Offset;
UInt8* m_SourceDataPtr;
size_t m_SourceDataSize;
};
std::stack<TypeContext> m_Context;
std::size_t AlignAddress(std::size_t addr, std::size_t align)
{
return addr + ((~addr + 1U) & (align - 1U));
}
size_t GetActiveOffset () const
{
return m_Context.top().m_Root + m_Context.top().m_Offset;
}
UInt8* GetActiveBlobPtr ()
{
return &m_Blob[GetActiveOffset ()];
}
void WritePtrValueAtLocation (size_t locationInBlob, SInt64 value);
void ValidateSerializedLayout (void* srcData, const char* name);
void Push (size_t size, void* srcDataPtr, size_t align);
void TransferPtrImpl (bool isValidPtr, ReduceCopyData* reduceCopyData, size_t alignOfT);
void ReduceCopyImpl (const ReduceCopyData& reduce, size_t alignOfT);
bool HasOffsetPtrWithDebugPtr () const;
bool Use64BitOffsetPtr() const { return m_Use64BitOffsetPtr; }
bool AllowDataLayoutValidation () const;
public:
BlobWrite (container_type& blob, TransferInstructionFlags flags, BuildTargetPlatform targetPlatform);
void SetReduceCopy (bool reduce) { m_ReduceCopy = reduce; }
bool IsWriting () { return true; }
bool IsWritingPPtr () { return true; }
bool NeedsInstanceIDRemapping () { return m_Flags & kNeedsInstanceIDRemapping; }
bool ConvertEndianess () { return m_SwapEndianess; }
bool IsWritingGameReleaseData ()
{
return true;
}
bool IsSerializingForGameRelease ()
{
return true;
}
bool IsBuildingTargetPlatform (BuildTargetPlatform platform)
{
if (platform == kBuildAnyPlayerData)
return m_TargetPlatform >= kBuildValidPlayer;
else
return m_TargetPlatform == platform;
}
BuildTargetPlatform GetBuildingTargetPlatform () { return static_cast<BuildTargetPlatform>(m_TargetPlatform); }
template<class T>
void Transfer (T& data, const char* name, TransferMetaFlags metaFlag = kNoTransferFlags);
template<class T>
void TransferWithTypeString (T& data, const char* name, const char* typeName, TransferMetaFlags metaFlag = kNoTransferFlags);
template<class T>
void TransferBasicData (T& data);
template<class T>
void TransferPtr (bool isValidPtr, ReduceCopyData* reduceCopyData);
template<class T>
void ReduceCopy (const ReduceCopyData& reduce);
template<class T>
void TransferSTLStyleArray (T& data, TransferMetaFlags metaFlag = kNoTransferFlags);
template<class> friend class BlobWriteTransferSTLStyleArrayImpl;
};
template<typename T> class BlobWriteTransferSTLStyleArrayImpl
{
public:
void operator()(T& data, TransferMetaFlags metaFlags, BlobWrite& transfer)
{
AssertString ("STL array are not support for BlobWrite");
}
};
template<typename T> class BlobWriteTransferSTLStyleArrayImpl< OffsetPtrArrayTransfer<T> >
{
public:
void operator()(OffsetPtrArrayTransfer<T>& data, TransferMetaFlags metaFlags, BlobWrite& transfer)
{
if (data.size() == 0)
{
Assert (!transfer.m_CopyData);
return;
}
Assert (transfer.m_CopyData);
size_t arrayByteSize = BlobSize::CalculateSize(*data.begin(), transfer.HasOffsetPtrWithDebugPtr(), transfer.Use64BitOffsetPtr()) * data.size();
transfer.Push(arrayByteSize, &*data.begin(), ALIGN_OF( typename OffsetPtrArrayTransfer<T>::value_type ));
typename OffsetPtrArrayTransfer<T>::iterator end = data.end ();
for (typename OffsetPtrArrayTransfer<T>::iterator i = data.begin ();i != end;++i)
transfer.Transfer (*i, "data");
transfer.m_Context.pop();
}
};
template<typename T, int SIZE> class BlobWriteTransferSTLStyleArrayImpl< StaticArrayTransfer<T, SIZE> >
{
public:
void operator()(StaticArrayTransfer<T, SIZE>& data, TransferMetaFlags metaFlags, BlobWrite& transfer)
{
typename StaticArrayTransfer<T, SIZE>::iterator end = data.end ();
for (typename StaticArrayTransfer<T, SIZE>::iterator i = data.begin ();i != end;++i)
transfer.Transfer (*i, "data");
}
};
template<class T> inline
void BlobWrite::TransferSTLStyleArray (T& data, TransferMetaFlags metaFlags)
{
BlobWriteTransferSTLStyleArrayImpl<T> transfer;
transfer(data, metaFlags, *this);
}
template<class T> inline
void BlobWrite::Transfer (T& data, const char* name, TransferMetaFlags)
{
bool copyData = m_CopyData;
if (m_CopyData)
Push(BlobSize::CalculateSize(data, HasOffsetPtrWithDebugPtr(), Use64BitOffsetPtr()), &data, SerializeTraits<T>::GetAlignOf() );
// Follow natural c++ alignment
size_t head = m_Context.top().m_Root;
size_t& offset = m_Context.top().m_Offset;
// always align head + offset not only offset otherwise you may get wrong align for nested data structure
offset = AlignAddress(head + offset, SerializeTraits<T>::GetAlignOf()) - head;
ValidateSerializedLayout(&data, name);
SerializeTraits<T>::Transfer (data, *this);
if (copyData)
m_Context.pop();
}
template<class T> inline
void BlobWrite::TransferWithTypeString (T& data, const char*, const char*, TransferMetaFlags)
{
SerializeTraits<T>::Transfer (data, *this);
}
template<class T> inline
void BlobWrite::TransferBasicData (T& srcData)
{
Assert(m_Blob.size() >= GetActiveOffset() + sizeof(T));
// Write basic data into blob & endianswap
UInt8* blobPtr = GetActiveBlobPtr();
memcpy(blobPtr, &srcData, sizeof(T));
if (m_SwapEndianess)
SwapEndianBytes(*reinterpret_cast<T*> (blobPtr));
m_Context.top().m_Offset += sizeof(T);
}
template<class T> inline
void BlobWrite::TransferPtr (bool isValidPtr, ReduceCopyData* reduceCopyData)
{
TransferPtrImpl (isValidPtr, reduceCopyData, ALIGN_OF(T));
}
template<class T> inline
void BlobWrite::ReduceCopy (const ReduceCopyData& reduce)
{
ReduceCopyImpl(reduce, ALIGN_OF(T));
}
#endif
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