(Ringbuffer) fix buffer growth error

tlecomte · Oct 18, 2015 · 37d7ee7 · 37d7ee7
1 parent b90f50d
commit 37d7ee7
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/friture/ringbuffer.py b/friture/ringbuffer.py
@@ -110,6 +110,8 @@ def grow_if_needed(self, length):
             old_offset_mod = self.offset % old_length
             new_offset_mod = self.offset % new_length
             shift = new_offset_mod - old_offset_mod
+            #shift can be negative, computing modulo again
+            shift %= new_length
             # first copy, always complete
             newbuffer[:, shift:shift + old_length] = self.buffer[:, :old_length]
             # second copy, can be folded