From d1e80dc431815df3ac6eeed654eeccaf8d6beea7 Mon Sep 17 00:00:00 2001 From: Lorry Tar Creator Date: Fri, 18 Jul 2008 14:57:36 +0000 Subject: libmpeg2-0.5.1 --- libmpeg2/alloc.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 libmpeg2/alloc.c (limited to 'libmpeg2/alloc.c') diff --git a/libmpeg2/alloc.c b/libmpeg2/alloc.c new file mode 100644 index 0000000..71bc18b --- /dev/null +++ b/libmpeg2/alloc.c @@ -0,0 +1,70 @@ +/* + * alloc.c + * Copyright (C) 2000-2003 Michel Lespinasse + * Copyright (C) 1999-2000 Aaron Holtzman + * + * 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 +#include + +#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 * alloc_func (unsigned, mpeg2_alloc_t), + int free_func (void *)) +{ + malloc_hook = alloc_func; + free_hook = free_func; +} -- cgit v1.2.1