/* * alloc.c * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org> * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> * * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. * See http://libmpeg2.sourceforge.net/ for updates. * * mpeg2dec is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * mpeg2dec is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */#include <stdlib.h>#include <inttypes.h>#include "mpeg2.h"static void * (* malloc_hook) (unsigned size, mpeg2_alloc_t reason) = NULL;static int (* free_hook) (void * buf) = NULL;void * mpeg2_malloc (unsigned size, mpeg2_alloc_t reason){    char * buf;    if (malloc_hook) {	buf = (char *) malloc_hook (size, reason);	if (buf)	    return buf;    }    if (size) {	buf = (char *) malloc (size + 63 + sizeof (void **));	if (buf) {	    char * align_buf;	    align_buf = buf + 63 + sizeof (void **);	    align_buf -= (long)align_buf & 63;	    *(((void **)align_buf) - 1) = buf;	    return align_buf;	}    }    return NULL;}void mpeg2_free (void * buf){    if (free_hook && free_hook (buf))	return;    if (buf)	free (*(((void **)buf) - 1));}void mpeg2_malloc_hooks (void * malloc (unsigned, mpeg2_alloc_t),			 int free (void *)){    malloc_hook = malloc;    free_hook = free;}