# HG changeset patch
# User Chris Cannam
# Date 1631809971 -3600
#      Thu Sep 16 17:32:51 2021 +0100
# Branch resampler
# Node ID c8966ad8626ab2706ea605a8cb239a608c6f2d8e
# Parent  9697f9a50c01a0cee2703e532830e624c0f8aa06
Correct calculation of dot_length in multi-channel case, fixing buffer overrun

diff --git a/src/BQResampler.cpp b/src/BQResampler.cpp
--- a/src/BQResampler.cpp
+++ b/src/BQResampler.cpp
@@ -600,7 +600,9 @@
     int phase_length = pr.length;
     double result = 0.0;
 
-    int dot_length = min(phase_length, int(s->buffer.size()) - s->left);
+    int dot_length =
+        min(phase_length,
+            (int(s->buffer.size()) - s->left) / m_channels);
 
     if (m_dynamism == RatioMostlyFixed) {
         int phase_start = pr.start_index;