1 files changed, 70 insertions, 0 deletions
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 <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 * alloc_func (unsigned, mpeg2_alloc_t),
+			 int free_func (void *))
+{
+    malloc_hook = alloc_func;
+    free_hook = free_func;
+}