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diff audioio/AudioCallbackPlaySource.cpp @ 244:f853dfb200de

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Avoid creating a time stretcher if no sample rate set (SF bug #3376634)
author Chris Cannam
date Wed, 28 Sep 2011 13:24:49 +0100
parents 8aace2d9f1c2
children 0136555495ae cba1e2a3d14b 068235cf5bf7
line wrap: on
line diff
--- a/audioio/AudioCallbackPlaySource.cpp	Wed Sep 28 10:17:35 2011 +0100
+++ b/audioio/AudioCallbackPlaySource.cpp	Wed Sep 28 13:24:49 2011 +0100
@@ -896,8 +896,16 @@
 void
 AudioCallbackPlaySource::setTargetSampleRate(size_t sr)
 {
+    bool first = (m_targetSampleRate == 0);
+
     m_targetSampleRate = sr;
     initialiseConverter();
+
+    if (first && (m_stretchRatio != 1.f)) {
+        // couldn't create a stretcher before because we had no sample
+        // rate: make one now
+        setTimeStretch(m_stretchRatio);
+    }
 }
 
 void
@@ -1034,6 +1042,8 @@
 {
     m_stretchRatio = factor;
 
+    if (!getTargetSampleRate()) return; // have to make our stretcher later
+
     if (m_timeStretcher || (factor == 1.f)) {
         // stretch ratio will be set in next process call if appropriate
     } else {