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83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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// Description : Memory block helper used with ZLib
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#ifndef CRYINCLUDE_EDITOR_UTIL_MEMORYBLOCK_H
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#define CRYINCLUDE_EDITOR_UTIL_MEMORYBLOCK_H
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#pragma once
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#include "RefCountBase.h"
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#include "Include/EditorCoreAPI.h"
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struct IEditor;
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class CArchive;
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class EDITOR_CORE_API CMemoryBlock
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: public CRefCountBase
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{
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public:
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CMemoryBlock();
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CMemoryBlock(const CMemoryBlock& mem);
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~CMemoryBlock();
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CMemoryBlock& operator=(const CMemoryBlock& mem);
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//! Allocate or reallocate memory for this block.
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//! @param size Amount of memory in bytes to allocate.
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//! @return true if the allocation succeeded.
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bool Allocate(int size, int uncompressedSize = 0);
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//! Frees memory allocated in this block (if owned).
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//! Just clears internal references (if unowned).
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void Free();
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//! Attach memory buffer to this block.
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//! Ownership is not transferred; this buffer will not be deleted by CMemoryBlock
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void Attach(void* buffer, int size, int uncompressedSize = 0);
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//! Detach memory buffer that was previously attached.
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//! Note: Implemented as Free()
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void Detach();
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//! Returns amount of allocated memory in this block.
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int GetSize() const { return m_size; }
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//! Returns amount of allocated memory in this block.
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int GetUncompressedSize() const { return m_uncompressedSize; }
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void* GetBuffer() const { return m_buffer; };
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//! Copy memory range to memory block.
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void Copy(void* src, int size);
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//! Compress this memory block to specified memory block.
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//! @param toBlock target memory block where compressed result will be stored.
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void Compress(CMemoryBlock& toBlock) const;
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//! Uncompress this memory block to specified memory block.
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//! @param toBlock target memory block where compressed result will be stored.
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void Uncompress(CMemoryBlock& toBlock) const;
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//! Serialize memory block to archive.
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void Serialize(CArchive& ar);
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//! Is MemoryBlock is empty.
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bool IsEmpty() const { return m_buffer == 0; }
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private:
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void* m_buffer;
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int m_size;
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//! If not 0, memory block is compressed.
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int m_uncompressedSize;
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//! True if memory block owns its memory.
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bool m_owns;
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};
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#endif // CRYINCLUDE_EDITOR_UTIL_MEMORYBLOCK_H
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