/*
Copyright (C) 2003 Commonwealth Scientific and Industrial Research
Organisation (CSIRO) Australia
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of CSIRO Australia nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ORGANISATION OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __OGGZ_BYTEORDER_H__
#define __OGGZ_BYTEORDER_H__
#include "config.h"
#ifdef _UNUSED_
static unsigned short
_le_16 (unsigned short s)
{
unsigned short ret=s;
#ifdef WORDS_BIGENDIAN
ret = (s>>8) & 0x00ffU;
ret += (s<<8) & 0xff00U;
#endif
return ret;
}
#endif /* _UNUSED_ */
static ogg_uint32_t
_le_32 (ogg_uint32_t i)
{
ogg_uint32_t ret=i;
#ifdef WORDS_BIGENDIAN
ret = (i>>24);
ret += (i>>8) & 0x0000ff00;
ret += (i<<8) & 0x00ff0000;
ret += (i<<24);
#endif
return ret;
}
static unsigned short
_be_16 (unsigned short s)
{
unsigned short ret=s;
#ifndef WORDS_BIGENDIAN
ret = (s>>8) & 0x00ffU;
ret += (s<<8) & 0xff00U;
#endif
return ret;
}
static ogg_uint32_t
_be_32 (ogg_uint32_t i)
{
ogg_uint32_t ret=i;
#ifndef WORDS_BIGENDIAN
ret = (i>>24);
ret += (i>>8) & 0x0000ff00;
ret += (i<<8) & 0x00ff0000;
ret += (i<<24);
#endif
return ret;
}
static ogg_int64_t
_le_64 (ogg_int64_t l)
{
ogg_int64_t ret=l;
unsigned char *ucptr = (unsigned char *)&ret;
#ifdef WORDS_BIGENDIAN
unsigned char temp;
temp = ucptr [0] ;
ucptr [0] = ucptr [7] ;
ucptr [7] = temp ;
temp = ucptr [1] ;
ucptr [1] = ucptr [6] ;
ucptr [6] = temp ;
temp = ucptr [2] ;
ucptr [2] = ucptr [5] ;
ucptr [5] = temp ;
temp = ucptr [3] ;
ucptr [3] = ucptr [4] ;
ucptr [4] = temp ;
#endif
return (*(ogg_int64_t *)ucptr);
}
static ogg_int32_t
int32_be_at (unsigned char *c)
{
return (c [0] << 24) | (c [1] << 16) | (c [2] << 8) | c [3] ;
}
static unsigned short
int16_be_at (unsigned char *c)
{
return (c [0] << 8) | c [1];
}
static ogg_int32_t
int32_le_at (unsigned char *c)
{
return c [0] | (c [1] << 8) | (c [2] << 16) | (c [3] << 24);
}
static ogg_int64_t
int64_le_at (unsigned char *c)
{
ogg_uint32_t a = c [0] | (c [1] << 8) | (c [2] << 16) | (c [3] << 24);
ogg_uint32_t b = c [4] | (c [5] << 8) | (c [6] << 16) | (c [7] << 24);
return (((ogg_int64_t)b) << 32) | a;
}
#endif /* __OGGZ_BYTEORDER_H__ */