src/endian/SDL_endian.c
author Sam Lantinga <slouken@libsdl.org>
Fri, 14 Dec 2001 12:30:25 +0000
changeset 249 e3d0d44f6f2e
parent 0 74212992fb08
child 252 e8157fcb3114
permissions -rw-r--r--
*** empty log message ***
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Library General Public
     7     License as published by the Free Software Foundation; either
     8     version 2 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Library General Public License for more details.
    14 
    15     You should have received a copy of the GNU Library General Public
    16     License along with this library; if not, write to the Free
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18 
    19     Sam Lantinga
    20     slouken@devolution.com
    21 */
    22 
    23 #ifdef SAVE_RCSID
    24 static char rcsid =
    25  "@(#) $Id$";
    26 #endif
    27 
    28 /* Functions for dynamically reading and writing endian-specific values */
    29 
    30 #include "SDL_endian.h"
    31 
    32 Uint16 SDL_ReadLE16 (SDL_RWops *src)
    33 {
    34 	Uint16 value;
    35 
    36 	SDL_RWread(src, &value, (sizeof value), 1);
    37 	return(SDL_SwapLE16(value));
    38 }
    39 Uint16 SDL_ReadBE16 (SDL_RWops *src)
    40 {
    41 	Uint16 value;
    42 
    43 	SDL_RWread(src, &value, (sizeof value), 1);
    44 	return(SDL_SwapBE16(value));
    45 }
    46 Uint32 SDL_ReadLE32 (SDL_RWops *src)
    47 {
    48 	Uint32 value;
    49 
    50 	SDL_RWread(src, &value, (sizeof value), 1);
    51 	return(SDL_SwapLE32(value));
    52 }
    53 Uint32 SDL_ReadBE32 (SDL_RWops *src)
    54 {
    55 	Uint32 value;
    56 
    57 	SDL_RWread(src, &value, (sizeof value), 1);
    58 	return(SDL_SwapBE32(value));
    59 }
    60 Uint64 SDL_ReadLE64 (SDL_RWops *src)
    61 {
    62 	Uint64 value;
    63 
    64 	SDL_RWread(src, &value, (sizeof value), 1);
    65 	return(SDL_SwapLE64(value));
    66 }
    67 Uint64 SDL_ReadBE64 (SDL_RWops *src)
    68 {
    69 	Uint64 value;
    70 
    71 	SDL_RWread(src, &value, (sizeof value), 1);
    72 	return(SDL_SwapBE64(value));
    73 }
    74 
    75 int SDL_WriteLE16 (SDL_RWops *dst, Uint16 value)
    76 {
    77 	value = SDL_SwapLE16(value);
    78 	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
    79 }
    80 int SDL_WriteBE16 (SDL_RWops *dst, Uint16 value)
    81 {
    82 	value = SDL_SwapBE16(value);
    83 	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
    84 }
    85 int SDL_WriteLE32 (SDL_RWops *dst, Uint32 value)
    86 {
    87 	value = SDL_SwapLE32(value);
    88 	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
    89 }
    90 int SDL_WriteBE32 (SDL_RWops *dst, Uint32 value)
    91 {
    92 	value = SDL_SwapBE32(value);
    93 	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
    94 }
    95 int SDL_WriteLE64 (SDL_RWops *dst, Uint64 value)
    96 {
    97 	value = SDL_SwapLE64(value);
    98 	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
    99 }
   100 int SDL_WriteBE64 (SDL_RWops *dst, Uint64 value)
   101 {
   102 	value = SDL_SwapBE64(value);
   103 	return(SDL_RWwrite(dst, &value, (sizeof value), 1));
   104 }