rockbox/firmware/buffer.c
Linus Nielsen Feltzing d6c381508e Always align allocated buffers on 32-bit boundaries
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10391 a1c6a512-1295-4272-9138-f99709370657
2006-08-01 09:43:14 +00:00

46 lines
1.4 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include "buffer.h"
#ifdef SIMULATOR
unsigned char audiobuffer[(MEM*1024-256)*1024];
unsigned char *audiobufend = audiobuffer + sizeof(audiobuffer);
#else
/* defined in linker script */
extern unsigned char audiobuffer[];
#endif
unsigned char *audiobuf;
void buffer_init(void)
{
/* 32-bit aligned */
audiobuf = (void *)(((unsigned long)audiobuffer + 3) & ~3);
}
void *buffer_alloc(size_t size)
{
void *retval = audiobuf;
audiobuf += size;
/* 32-bit aligned */;
audiobuf = (void *)(((unsigned long)audiobuf + 3) & ~3);
return retval;
}