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+/*
+ This file is part of the KDE libraries.
+ Copyright (c) 2004 Szombathelyi György <gyurco@freemail.hu>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License version 2 as published by the Free Software Foundation.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+#ifndef KSWAP_H
+#define KSWAP_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <tqglobal.h>
+
+/**
+ * \defgroup KSWAP Byte-swapping functions
+ * kswap.h contains functions that will help converting
+ * 16, 32 and 64 bit length data between little-endian and
+ * big-endian representations.
+ *
+ * The KSWAP_16, KSWAP_32 and KSWAP_64 functions are always
+ * swaps the byte order of the supplied argument (which should be
+ * 16, 32 or 64 bit wide). These functions are inline, and tries to
+ * use the most optimized function of the underlying system
+ * (bswap_xx functions from byteswap.h in GLIBC, or ntohs and ntohl
+ * on little-endian machines, and if neither are applicable, some fast
+ * custom code).
+ *
+ * The KFromTo{Little|Big}Endian functions are for converting big-endian and
+ * little-endian data to and from the machine endianness.
+ */
+
+#ifdef HAVE_BYTESWAP_H
+#include <byteswap.h>
+
+ inline TQ_UINT16 KSWAP_16( TQ_UINT16 b ) { return bswap_16( b ); }
+ inline TQ_INT16 KSWAP_16( TQ_INT16 b ) { return bswap_16( (TQ_UINT16)b ); }
+ inline TQ_UINT32 KSWAP_32( TQ_UINT32 b ) { return bswap_32( b ); }
+ inline TQ_INT32 KSWAP_32( TQ_INT32 b ) { return bswap_32( (TQ_UINT32)b ); }
+ inline TQ_UINT64 KSWAP_64( TQ_UINT64 b ) { return bswap_64( b ); }
+ inline TQ_INT64 KSWAP_64( TQ_INT64 b ) { return bswap_64( (TQ_UINT64)b ); }
+
+#else /* HAVE_BYTESWAP_H */
+#ifdef WORDS_BIGENDIAN
+ inline TQ_UINT16 KSWAP_16( TQ_UINT16 b )
+ {
+ return (((b) & 0x00ff) << 8 | ((b) & 0xff00) >> 8);
+ }
+
+ inline TQ_INT16 KSWAP_16( TQ_INT16 b )
+ {
+ return ((((TQ_UINT16)b) & 0x00ff) << 8 | (((TQ_UINT16)b) & 0xff00) >> 8);
+ }
+
+ inline TQ_UINT32 KSWAP_32( TQ_UINT32 b )
+ {
+ return
+ ((((b) & 0xff000000) >> 24) | (((b) & 0x00ff0000) >> 8) | \
+ (((b) & 0x0000ff00) << 8) | (((b) & 0x000000ff) << 24));
+ }
+
+ inline TQ_INT32 KSWAP_32( TQ_INT32 b )
+ {
+ return
+ (((((TQ_UINT32)b) & 0xff000000) >> 24) | ((((TQ_UINT32)b) & 0x00ff0000) >> 8) | \
+ ((((TQ_UINT32)b) & 0x0000ff00) << 8) | ((((TQ_UINT32)b) & 0x000000ff) << 24));
+ }
+#else /* WORDS_BIGENDIAN */
+#include <sys/types.h>
+#include <netinet/in.h>
+
+ inline TQ_UINT16 KSWAP_16( TQ_UINT16 b ) { return htons(b); }
+ inline TQ_INT16 KSWAP_16( TQ_INT16 b ) { return htons((TQ_UINT16)b); }
+ inline TQ_UINT32 KSWAP_32( TQ_UINT32 b ) { return htonl(b); }
+ inline TQ_INT32 KSWAP_32( TQ_INT32 b ) { return htonl((TQ_UINT32)b); }
+#endif
+ inline TQ_UINT64 KSWAP_64( TQ_UINT64 b )
+ {
+ union {
+ TQ_UINT64 ll;
+ TQ_UINT32 l[2];
+ } w, r;
+ w.ll = b;
+ r.l[0] = KSWAP_32( w.l[1] );
+ r.l[1] = KSWAP_32( w.l[0] );
+ return r.ll;
+ }
+
+ inline TQ_INT64 KSWAP_64( TQ_INT64 b )
+ {
+ union {
+ TQ_UINT64 ll;
+ TQ_UINT32 l[2];
+ } w, r;
+ w.ll = (TQ_UINT64) b;
+ r.l[0] = KSWAP_32( w.l[1] );
+ r.l[1] = KSWAP_32( w.l[0] );
+ return r.ll;
+ }
+#endif /* !HAVE_BYTESWAP_H */
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit unsigned value from/to big-endian byte order to/from the machine order.
+ */
+inline TQ_UINT16 KFromToBigEndian( TQ_UINT16 b )
+{
+#ifdef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_16(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit unsigned array from/to big-endian byte order to/from the machine order.
+ */
+inline void KFromToBigEndian( TQ_UINT16 *out, TQ_UINT16 *in, uint len )
+{
+#ifdef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<1 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit unsigned value from/to big-endian byte order to/from the machine order.
+ */
+inline TQ_UINT32 KFromToBigEndian( TQ_UINT32 b )
+{
+#ifdef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_32(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit unsigned array from/to big-endian byte order to/from the machine order.
+ */
+inline void KFromToBigEndian( TQ_UINT32 *out, TQ_UINT32 *in, uint len )
+{
+#ifdef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<2 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit unsigned value from/to big-endian byte order to/from the machine order.
+ */
+inline TQ_UINT64 KFromToBigEndian( TQ_UINT64 b )
+{
+#ifdef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_64(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit unsigned array from/to big-endian byte order to/from the machine order.
+ */
+inline void KFromToBigEndian( TQ_UINT64 *out, TQ_UINT64 *in, uint len )
+{
+#ifdef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<3 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit signed value from/to big-endian byte order to/from the machine order.
+ */
+inline TQ_INT16 KFromToBigEndian( TQ_INT16 b )
+{
+#ifdef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_16(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit signed array from/to big-endian byte order to/from the machine order.
+ */
+inline void KFromToBigEndian( TQ_INT16 *out, TQ_INT16 *in, uint len )
+{
+#ifdef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<1 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit signed value from/to big-endian byte order to/from the machine order.
+ */
+inline TQ_INT32 KFromToBigEndian( TQ_INT32 b )
+{
+#ifdef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_32(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit signed array from/to big-endian byte order to/from the machine order.
+ */
+inline void KFromToBigEndian( TQ_INT32 *out, TQ_INT32 *in, uint len )
+{
+#ifdef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<2 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit signed value from/to big-endian byte order to/from the machine order.
+ */
+inline TQ_INT64 KFromToBigEndian( TQ_INT64 b )
+{
+#ifdef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_64(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit signed array from/to big-endian byte order to/from the machine order.
+ */
+inline void KFromToBigEndian( TQ_INT64 *out, TQ_INT64 *in, uint len )
+{
+#ifdef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<3 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit unsigned value from/to little-endian byte order to/from the machine order.
+ */
+inline TQ_UINT16 KFromToLittleEndian( TQ_UINT16 b )
+{
+#ifndef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_16(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit unsigned array from/to little-endian byte order to/from the machine order.
+ */
+inline void KFromToLittleEndian( TQ_UINT16 *out, TQ_UINT16 *in, uint len )
+{
+#ifndef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<1 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit unsigned value from/to little-endian byte order to/from the machine order.
+ */
+inline TQ_UINT32 KFromToLittleEndian( TQ_UINT32 b )
+{
+#ifndef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_32(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit unsigned array from/to little-endian byte order to/from the machine order.
+ */
+inline void KFromToLittleEndian( TQ_UINT32 *out, TQ_UINT32 *in, uint len )
+{
+#ifndef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<2 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit unsigned value from/to little-endian byte order to/from the machine order.
+ */
+inline TQ_UINT64 KFromToLittleEndian( TQ_UINT64 b )
+{
+#ifndef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_64(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit unsigned array from/to little-endian byte order to/from the machine order.
+ */
+inline void KFromToLittleEndian( TQ_UINT64 *out, TQ_UINT64 *in, uint len )
+{
+#ifndef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<3 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit signed value from/to little-endian byte order to/from the machine order.
+ */
+inline TQ_INT16 KFromToLittleEndian( TQ_INT16 b )
+{
+#ifndef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_16(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 16 bit signed array from/to little-endian byte order to/from the machine order.
+ */
+inline void KFromToLittleEndian( TQ_INT16 *out, TQ_INT16 *in, uint len )
+{
+#ifndef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<1 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_16( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit signed value from/to little-endian byte order to/from the machine order.
+ */
+inline TQ_INT32 KFromToLittleEndian( TQ_INT32 b )
+{
+#ifndef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_32(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 32 bit signed array from/to little-endian byte order to/from the machine order.
+ */
+inline void KFromToLittleEndian( TQ_INT32 *out, TQ_INT32 *in, uint len )
+{
+#ifndef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<2 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_32( *in ); out++; in++; len--; }
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit signed value from/to little-endian byte order to/from the machine order.
+ */
+inline TQ_INT64 KFromToLittleEndian( TQ_INT64 b )
+{
+#ifndef WORDS_BIGENDIAN
+ return b;
+#else
+ return KSWAP_64(b);
+#endif
+}
+
+/**
+ * \ingroup KSWAP
+ * Converts a 64 bit signed array from/to little-endian byte order to/from the machine order.
+ */
+inline void KFromToLittleEndian( TQ_INT64 *out, TQ_INT64 *in, uint len )
+{
+#ifndef WORDS_BIGENDIAN
+ if ( out != in ) memcpy( out, in, len<<3 ) ;
+#else
+ while ( len>0 ) { *out = KSWAP_64( *in ); out++; in++; len--; }
+#endif
+}
+
+#endif /* KSWAP_H */