$NetBSD: patch-ao,v 1.1 2012/02/24 18:36:48 christos Exp $

--- lib/mp4v2/virtual_io.cpp.orig	2006-10-23 18:26:38.000000000 -0400
+++ lib/mp4v2/virtual_io.cpp	2012-02-24 13:04:41.000000000 -0500
@@ -39,20 +39,16 @@
 int FILE_SetPosition(void *user, u_int64_t position)
 {
 	FILE *fp = (FILE *)user;
-	fpos_t fpos;
-	VAR_TO_FPOS(fpos, position);
-	return fsetpos(fp, &fpos);
+	return fseeko(fp, position, SEEK_SET) == -1 ? -1 : 0;
 }
 
 int FILE_GetPosition(void *user, u_int64_t *position)
 {
 	FILE *fp = (FILE *)user;
-	fpos_t fpos;
-	if (fgetpos(fp, &fpos) < 0) { 
+	*position = ftello(fp);
+	if (*position == (u_int64_t)-1) { 
 		throw new MP4Error(errno, "MP4GetPosition");
 	}
-	
-	FPOS_TO_VAR(fpos, u_int64_t, *position);
 	return 0;
 }