Chris@4: /*
Chris@4:  *  Copyright (C) 2004 Steve Harris
Chris@4:  *
Chris@4:  *  This program is free software; you can redistribute it and/or
Chris@4:  *  modify it under the terms of the GNU Lesser General Public License
Chris@4:  *  as published by the Free Software Foundation; either version 2.1
Chris@4:  *  of the License, or (at your option) any later version.
Chris@4:  *
Chris@4:  *  This program is distributed in the hope that it will be useful,
Chris@4:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@4:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@4:  *  GNU Lesser General Public License for more details.
Chris@4:  *
Chris@4:  *  $Id$
Chris@4:  */
Chris@4: 
Chris@4: #ifndef LO_ENDIAN_H
Chris@4: #define LO_ENDIAN_H
Chris@4: 
Chris@4: #include <sys/types.h>
Chris@4: #include <stdint.h>
Chris@4: 
Chris@4: #ifdef WIN32
Chris@4: #include <winsock2.h>
Chris@4: #include <ws2tcpip.h>
Chris@4: #else
Chris@4: #include <netinet/in.h>
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef __cplusplus
Chris@4: extern "C" {
Chris@4: #endif
Chris@4: 
Chris@4: #define lo_swap16(x) htons(x)
Chris@4: 
Chris@4: #define lo_swap32(x) htonl(x)
Chris@4: 
Chris@4: /* These macros come from the Linux kernel */
Chris@4: 
Chris@4: #ifndef lo_swap16
Chris@4: #define lo_swap16(x) \
Chris@4: ({ \
Chris@4:     uint16_t __x = (x); \
Chris@4:     ((uint16_t)( \
Chris@4: 	(((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \
Chris@4: 	(((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \
Chris@4: })
Chris@4: #warning USING UNOPTIMISED ENDIAN STUFF
Chris@4: #endif
Chris@4: 
Chris@4: #ifndef lo_swap32
Chris@4: #define lo_swap32(x) \
Chris@4: ({ \
Chris@4:     uint32_t __x = (x); \
Chris@4:     ((uint32_t)( \
Chris@4: 	(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
Chris@4: 	(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) <<  8) | \
Chris@4: 	(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >>  8) | \
Chris@4: 	(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
Chris@4: })
Chris@4: #endif
Chris@4: 
Chris@4: #if 0
Chris@4: #ifndef lo_swap64
Chris@4: #define lo_swap64(x) \
Chris@4: ({ \
Chris@4:     uint64_t __x = (x); \
Chris@4:     ((uint64_t)( \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) <<  8) | \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >>  8) | \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \
Chris@4: 	(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \
Chris@4: })
Chris@4: #endif
Chris@4: #else
Chris@4: 
Chris@4: typedef union {
Chris@4:     uint64_t all;
Chris@4:     struct {
Chris@4: 	uint32_t a;
Chris@4: 	uint32_t b;
Chris@4:     } part;
Chris@4: } lo_split64;
Chris@4: 
Chris@4: static inline uint64_t lo_swap64(uint64_t x)
Chris@4: {
Chris@4:     lo_split64 in, out;
Chris@4: 
Chris@4:     in.all = x;
Chris@4:     out.part.a = lo_swap32(in.part.b);
Chris@4:     out.part.b = lo_swap32(in.part.a);
Chris@4: 
Chris@4:     return out.all;
Chris@4: }
Chris@4: #endif
Chris@4: 
Chris@4: /* Host to OSC and OSC to Host conversion macros */
Chris@4: 
Chris@4: #if 0
Chris@4: #define lo_htoo16(x) (x)
Chris@4: #define lo_htoo32(x) (x)
Chris@4: #define lo_htoo64(x) (x)
Chris@4: #define lo_otoh16(x) (x)
Chris@4: #define lo_otoh32(x) (x)
Chris@4: #define lo_otoh64(x) (x)
Chris@4: #else
Chris@4: #define lo_htoo16 lo_swap16
Chris@4: #define lo_htoo32 lo_swap32
Chris@4: #define lo_htoo64 lo_swap64
Chris@4: #define lo_otoh16 lo_swap16
Chris@4: #define lo_otoh32 lo_swap32
Chris@4: #define lo_otoh64 lo_swap64
Chris@4: #endif
Chris@4: 
Chris@4: #ifdef __cplusplus
Chris@4: }
Chris@4: #endif
Chris@4: 
Chris@4: #endif
Chris@4: 
Chris@4: /* vi:set ts=8 sts=4 sw=4: */