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/*=========================================================================
Program: Visualization Toolkit
Module: vtkByteSwap.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkByteSwap - perform machine dependent byte swapping
// .SECTION Description
// vtkByteSwap is used by other classes to perform machine dependent byte
// swapping. Byte swapping is often used when reading or writing binary
// files.
#ifndef vtkByteSwap_h
#define vtkByteSwap_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
class VTKCOMMONCORE_EXPORT vtkByteSwap : public vtkObject
{
public:
static vtkByteSwap *New();
vtkTypeMacro(vtkByteSwap,vtkObject);
// Description:
// Type-safe swap signatures to swap for storage in either Little
// Endian or Big Endian format. Swapping is performed according to
// the true size of the type given.
#define VTK_BYTE_SWAP_DECL(T) \
static void SwapLE(T* p); \
static void SwapBE(T* p); \
static void SwapLERange(T* p, size_t num); \
static void SwapBERange(T* p, size_t num); \
static bool SwapLERangeWrite(const T* p, size_t num, FILE* file); \
static bool SwapBERangeWrite(const T* p, size_t num, FILE* file); \
static void SwapLERangeWrite(const T* p, size_t num, ostream* os); \
static void SwapBERangeWrite(const T* p, size_t num, ostream* os)
VTK_BYTE_SWAP_DECL(float);
VTK_BYTE_SWAP_DECL(double);
VTK_BYTE_SWAP_DECL(char);
VTK_BYTE_SWAP_DECL(short);
VTK_BYTE_SWAP_DECL(int);
VTK_BYTE_SWAP_DECL(long);
VTK_BYTE_SWAP_DECL(long long);
VTK_BYTE_SWAP_DECL(signed char);
VTK_BYTE_SWAP_DECL(unsigned char);
VTK_BYTE_SWAP_DECL(unsigned short);
VTK_BYTE_SWAP_DECL(unsigned int);
VTK_BYTE_SWAP_DECL(unsigned long);
VTK_BYTE_SWAP_DECL(unsigned long long);
#undef VTK_BYTE_SWAP_DECL
// Description:
// Swap 2, 4, or 8 bytes for storage as Little Endian.
static void Swap2LE(void* p);
static void Swap4LE(void* p);
static void Swap8LE(void* p);
// Description:
// Swap a block of 2-, 4-, or 8-byte segments for storage as Little Endian.
static void Swap2LERange(void* p, size_t num);
static void Swap4LERange(void* p, size_t num);
static void Swap8LERange(void* p, size_t num);
// Description:
// Swap a block of 2-, 4-, or 8-byte segments for storage as Little Endian.
// The results are written directly to a file to avoid temporary storage.
static bool SwapWrite2LERange(void const* p, size_t num, FILE* f);
static bool SwapWrite4LERange(void const* p, size_t num, FILE* f);
static bool SwapWrite8LERange(void const* p, size_t num, FILE* f);
static void SwapWrite2LERange(void const* p, size_t num, ostream* os);
static void SwapWrite4LERange(void const* p, size_t num, ostream* os);
static void SwapWrite8LERange(void const* p, size_t num, ostream* os);
// Description:
// Swap 2, 4, or 8 bytes for storage as Big Endian.
static void Swap2BE(void* p);
static void Swap4BE(void* p);
static void Swap8BE(void* p);
// Description:
// Swap a block of 2-, 4-, or 8-byte segments for storage as Big Endian.
static void Swap2BERange(void* p, size_t num);
static void Swap4BERange(void* p, size_t num);
static void Swap8BERange(void* p, size_t num);
// Description:
// Swap a block of 2-, 4-, or 8-byte segments for storage as Big Endian.
// The results are written directly to a file to avoid temporary storage.
static bool SwapWrite2BERange(void const* p, size_t num, FILE* f);
static bool SwapWrite4BERange(void const* p, size_t num, FILE* f);
static bool SwapWrite8BERange(void const* p, size_t num, FILE* f);
static void SwapWrite2BERange(void const* p, size_t num, ostream* os);
static void SwapWrite4BERange(void const* p, size_t num, ostream* os);
static void SwapWrite8BERange(void const* p, size_t num, ostream* os);
// Description:
// Swaps the bytes of a buffer. Uses an arbitrary word size, but
// assumes the word size is divisible by two.
static void SwapVoidRange(void *buffer, size_t numWords, size_t wordSize);
protected:
vtkByteSwap();
~vtkByteSwap();
private:
vtkByteSwap(const vtkByteSwap&); // Not implemented.
void operator=(const vtkByteSwap&); // Not implemented.
};
#endif
// VTK-HeaderTest-Exclude: vtkByteSwap.h
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