From a05d66cde6dbadbfcf6849a100fd7f03e6021687 Mon Sep 17 00:00:00 2001
From: Rob McMullen <feedback@playermissile.com>
Date: Thu, 5 Oct 2017 23:18:41 -0700
Subject: [PATCH] Profiling speedup #3: reduce number of function calls inside
 get_index_from_base_index because it gets called *a lot* in loops

---
 atrcopy/segments.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/atrcopy/segments.py b/atrcopy/segments.py
index 9ac45f4..a61cded 100644
--- a/atrcopy/segments.py
+++ b/atrcopy/segments.py
@@ -606,7 +606,7 @@ class DefaultSegment(object):
             index = r.get_reverse_index(base_index)
         else:
             index = base_index - r.get_raw_index(0)
-            if not self.is_valid_index(index):
+            if index < 0 or index >= self.rawdata.data_length:
                 raise IndexError("index %d not in this segment" % base_index)
         return index