src/endian/SDL_endian.c
author Sam Lantinga <slouken@lokigames.com>
Thu, 26 Apr 2001 16:45:43 +0000
changeset 0 74212992fb08
child 252 e8157fcb3114
permissions -rw-r--r--
Initial revision
slouken@0
     1
/*
slouken@0
     2
    SDL - Simple DirectMedia Layer
slouken@0
     3
    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
slouken@0
     4
slouken@0
     5
    This library is free software; you can redistribute it and/or
slouken@0
     6
    modify it under the terms of the GNU Library General Public
slouken@0
     7
    License as published by the Free Software Foundation; either
slouken@0
     8
    version 2 of the License, or (at your option) any later version.
slouken@0
     9
slouken@0
    10
    This library is distributed in the hope that it will be useful,
slouken@0
    11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
slouken@0
    12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
slouken@0
    13
    Library General Public License for more details.
slouken@0
    14
slouken@0
    15
    You should have received a copy of the GNU Library General Public
slouken@0
    16
    License along with this library; if not, write to the Free
slouken@0
    17
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
slouken@0
    18
slouken@0
    19
    Sam Lantinga
slouken@0
    20
    slouken@devolution.com
slouken@0
    21
*/
slouken@0
    22
slouken@0
    23
#ifdef SAVE_RCSID
slouken@0
    24
static char rcsid =
slouken@0
    25
 "@(#) $Id$";
slouken@0
    26
#endif
slouken@0
    27
slouken@0
    28
/* Functions for dynamically reading and writing endian-specific values */
slouken@0
    29
slouken@0
    30
#include "SDL_endian.h"
slouken@0
    31
slouken@0
    32
Uint16 SDL_ReadLE16 (SDL_RWops *src)
slouken@0
    33
{
slouken@0
    34
	Uint16 value;
slouken@0
    35
slouken@0
    36
	SDL_RWread(src, &value, (sizeof value), 1);
slouken@0
    37
	return(SDL_SwapLE16(value));
slouken@0
    38
}
slouken@0
    39
Uint16 SDL_ReadBE16 (SDL_RWops *src)
slouken@0
    40
{
slouken@0
    41
	Uint16 value;
slouken@0
    42
slouken@0
    43
	SDL_RWread(src, &value, (sizeof value), 1);
slouken@0
    44
	return(SDL_SwapBE16(value));
slouken@0
    45
}
slouken@0
    46
Uint32 SDL_ReadLE32 (SDL_RWops *src)
slouken@0
    47
{
slouken@0
    48
	Uint32 value;
slouken@0
    49
slouken@0
    50
	SDL_RWread(src, &value, (sizeof value), 1);
slouken@0
    51
	return(SDL_SwapLE32(value));
slouken@0
    52
}
slouken@0
    53
Uint32 SDL_ReadBE32 (SDL_RWops *src)
slouken@0
    54
{
slouken@0
    55
	Uint32 value;
slouken@0
    56
slouken@0
    57
	SDL_RWread(src, &value, (sizeof value), 1);
slouken@0
    58
	return(SDL_SwapBE32(value));
slouken@0
    59
}
slouken@0
    60
Uint64 SDL_ReadLE64 (SDL_RWops *src)
slouken@0
    61
{
slouken@0
    62
	Uint64 value;
slouken@0
    63
slouken@0
    64
	SDL_RWread(src, &value, (sizeof value), 1);
slouken@0
    65
	return(SDL_SwapLE64(value));
slouken@0
    66
}
slouken@0
    67
Uint64 SDL_ReadBE64 (SDL_RWops *src)
slouken@0
    68
{
slouken@0
    69
	Uint64 value;
slouken@0
    70
slouken@0
    71
	SDL_RWread(src, &value, (sizeof value), 1);
slouken@0
    72
	return(SDL_SwapBE64(value));
slouken@0
    73
}
slouken@0
    74
slouken@0
    75
int SDL_WriteLE16 (SDL_RWops *dst, Uint16 value)
slouken@0
    76
{
slouken@0
    77
	value = SDL_SwapLE16(value);
slouken@0
    78
	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
slouken@0
    79
}
slouken@0
    80
int SDL_WriteBE16 (SDL_RWops *dst, Uint16 value)
slouken@0
    81
{
slouken@0
    82
	value = SDL_SwapBE16(value);
slouken@0
    83
	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
slouken@0
    84
}
slouken@0
    85
int SDL_WriteLE32 (SDL_RWops *dst, Uint32 value)
slouken@0
    86
{
slouken@0
    87
	value = SDL_SwapLE32(value);
slouken@0
    88
	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
slouken@0
    89
}
slouken@0
    90
int SDL_WriteBE32 (SDL_RWops *dst, Uint32 value)
slouken@0
    91
{
slouken@0
    92
	value = SDL_SwapBE32(value);
slouken@0
    93
	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
slouken@0
    94
}
slouken@0
    95
int SDL_WriteLE64 (SDL_RWops *dst, Uint64 value)
slouken@0
    96
{
slouken@0
    97
	value = SDL_SwapLE64(value);
slouken@0
    98
	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
slouken@0
    99
}
slouken@0
   100
int SDL_WriteBE64 (SDL_RWops *dst, Uint64 value)
slouken@0
   101
{
slouken@0
   102
	value = SDL_SwapBE64(value);
slouken@0
   103
	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
slouken@0
   104
}