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Editor/Util/MemoryBlock.h

@@ -0,0 +1,85 @@
+////////////////////////////////////////////////////////////////////////////
+//
+//  Crytek Engine Source File.
+//  Copyright (C), Crytek Studios, 2002.
+// -------------------------------------------------------------------------
+//  File name:   memoryblock.h
+//  Version:     v1.00
+//  Created:     10/10/2002 by Timur.
+//  Compilers:   Visual Studio.NET
+//  Description: 
+// -------------------------------------------------------------------------
+//  History:
+//
+////////////////////////////////////////////////////////////////////////////
+
+#ifndef __memoryblock_h__
+#define __memoryblock_h__
+
+#if _MSC_VER > 1000
+#pragma once
+#endif
+
+#include "RefCountBase.h"
+
+/** Encapsulate block of memory.
+*/
+class CMemoryBlock : public CRefCountBase
+{
+public:
+	CMemoryBlock();
+	CMemoryBlock( const CMemoryBlock &mem );
+	~CMemoryBlock();
+
+	CMemoryBlock& operator=( const CMemoryBlock &mem );
+
+	//! Allocate or reallocare memory for this block.
+	//! @param size Ammount of memory in bytes to allocate.
+	//! @return true if allocation successed.
+	bool Allocate( int size,int uncompressedSize=0 );
+
+	//! Frees memory allocated in this block.
+	void Free();
+
+	//! Attach memory buffer to this block.
+	void Attach( void *buffer,int size,int uncompressedSize=0 );
+	//! Detach memory buffer that was previously attached.
+	void Detach();
+
+	//! Returns ammount of allocated memory in this block.
+	int GetSize() const { return m_size; }
+
+	//! Returns ammount of allocated memory in this block.
+	int GetUncompressedSize() const { return m_uncompressedSize; }
+
+	void* GetBuffer() const { return m_buffer; };
+
+	//! Copy memory range to memory block.
+	void Copy( void *src,int size );
+
+	//! Compress this memory block to specified memory block.
+	//! @param toBlock target memory block where compressed result will be stored.
+	void Compress( CMemoryBlock &toBlock ) const;
+
+	//! Uncompress this memory block to specified memory block.
+	//! @param toBlock target memory block where compressed result will be stored.
+	void Uncompress( CMemoryBlock &toBlock ) const;
+
+	//! Serialize memory block to archive.
+	void Serialize( CArchive &ar );
+
+	//! Is MemoryBlock is empty.
+	bool IsEmpty() const { return m_buffer == 0; }
+
+private:
+	void* m_buffer;
+	int m_size;
+	//! If not 0, memory block is compressed.
+	int m_uncompressedSize;
+	//! True if memory block owns its memory.
+	bool m_owns;
+};
+
+SMARTPTR_TYPEDEF( CMemoryBlock );
+
+#endif // __memoryblock_h__