# HG changeset patch
# User Chris Cannam
# Date 1389187190 0
# Node ID 817ad10f91d1089e39cc9bb444006568d11da2e0
# Parent  58582119c92a2c23d08cd8847967e3e7f8ec8f27
Silence playback when nothing is going on

diff -r 58582119c92a -r 817ad10f91d1 audioio/AudioGenerator.cpp
--- a/audioio/AudioGenerator.cpp	Wed Jan 08 13:07:22 2014 +0000
+++ b/audioio/AudioGenerator.cpp	Wed Jan 08 13:19:50 2014 +0000
@@ -639,6 +639,19 @@
             }
         }
 
+        // if we found no such frequency and the next point is further
+        // away than twice the model resolution, go silent (same
+        // criterion TimeValueLayer uses for ending a discrete curve
+        // segment)
+        if (f0 == 0.f) {
+            SparseTimeValueModel::PointList nextPoints = 
+                stvm->getNextPoints(reqStart + m_processingBlockSize);
+            if (nextPoints.empty() ||
+                nextPoints.begin()->frame > reqStart + 2 * stvm->getResolution()) {
+                f0 = -1.f;
+            }
+        }
+
         cerr << "f0 = " << f0 << endl;
 
         synth->mix(bufferIndexes,