apply_filter      777 convert.c      	return apply_filter(path, NULL, 0, -1, NULL, ca.drv->clean);
apply_filter      794 convert.c      	ret |= apply_filter(path, src, len, -1, dst, filter);
apply_filter      820 convert.c      	if (!apply_filter(path, NULL, 0, fd, dst, ca.drv->clean))
apply_filter      861 convert.c      	ret_filter = apply_filter(path, src, len, -1, dst, filter);