75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
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/* SPDX-License-Identifier: MIT */
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/**
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@file ntv2endian.h
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@brief Defines a number of handy byte-swapping macros.
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@copyright (C) 2008-2021 AJA Video Systems, Inc. All rights reserved.
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**/
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#ifndef NTV2ENDIAN_H
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#define NTV2ENDIAN_H
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#include "ajatypes.h"
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// unconditional endian byte swap
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#define NTV2EndianSwap16(__val__) \
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( ((UWord(__val__)<<8) & 0xFF00) | \
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((UWord(__val__)>>8) & 0x00FF) )
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#define NTV2EndianSwap32(__val__) \
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( ((ULWord(__val__)<<24) & 0xFF000000) | \
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((ULWord(__val__)<< 8) & 0x00FF0000) | \
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((ULWord(__val__)>> 8) & 0x0000FF00) | \
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((ULWord(__val__)>>24) & 0x000000FF) )
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#define NTV2EndianSwap64(__val__) \
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( ((ULWord64(__val__)<<56) & 0xFF00000000000000ULL) | \
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((ULWord64(__val__)<<40) & 0x00FF000000000000ULL) | \
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((ULWord64(__val__)<<24) & 0x0000FF0000000000ULL) | \
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((ULWord64(__val__)<< 8) & 0x000000FF00000000ULL) | \
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((ULWord64(__val__)>> 8) & 0x00000000FF000000ULL) | \
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((ULWord64(__val__)>>24) & 0x0000000000FF0000ULL) | \
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((ULWord64(__val__)>>40) & 0x000000000000FF00ULL) | \
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((ULWord64(__val__)>>56) & 0x00000000000000FFULL) )
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#if AJATargetBigEndian // BigEndian (BE) target host
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// BigEndian-to-host (NetworkByteOrder-to-host) (native)
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#define NTV2EndianSwap16BtoH(__val__) (__val__)
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#define NTV2EndianSwap16HtoB(__val__) (__val__)
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#define NTV2EndianSwap32BtoH(__val__) (__val__)
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#define NTV2EndianSwap32HtoB(__val__) (__val__)
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#define NTV2EndianSwap64BtoH(__val__) (__val__)
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#define NTV2EndianSwap64HtoB(__val__) (__val__)
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// LittleEndian-to-host (translate)
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#define NTV2EndianSwap16LtoH(__val__) NTV2EndianSwap16(__val__)
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#define NTV2EndianSwap16HtoL(__val__) NTV2EndianSwap16(__val__)
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#define NTV2EndianSwap32LtoH(__val__) NTV2EndianSwap32(__val__)
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#define NTV2EndianSwap32HtoL(__val__) NTV2EndianSwap32(__val__)
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#define NTV2EndianSwap64LtoH(__val__) NTV2EndianSwap64(__val__)
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#define NTV2EndianSwap64HtoL(__val__) NTV2EndianSwap64(__val__)
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#else // LittleEndian (LE) target host
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// BigEndian-to-host (NetworkByteOrder-to-host) (translate)
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#define NTV2EndianSwap16BtoH(__val__) NTV2EndianSwap16(__val__)
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#define NTV2EndianSwap16HtoB(__val__) NTV2EndianSwap16(__val__)
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#define NTV2EndianSwap32BtoH(__val__) NTV2EndianSwap32(__val__)
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#define NTV2EndianSwap32HtoB(__val__) NTV2EndianSwap32(__val__)
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#define NTV2EndianSwap64BtoH(__val__) NTV2EndianSwap64(__val__)
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#define NTV2EndianSwap64HtoB(__val__) NTV2EndianSwap64(__val__)
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// LittleEndian-to-host (native)
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#define NTV2EndianSwap16LtoH(__val__) (__val__)
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#define NTV2EndianSwap16HtoL(__val__) (__val__)
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#define NTV2EndianSwap32LtoH(__val__) (__val__)
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#define NTV2EndianSwap32HtoL(__val__) (__val__)
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#define NTV2EndianSwap64LtoH(__val__) (__val__)
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#define NTV2EndianSwap64HtoL(__val__) (__val__)
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#endif
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#endif // NTV2ENDIAN_H
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