diff src/vamp-hostsdk/PluginBufferingAdapter.cpp @ 415:1522e2f6d700

Fix handling of output sample rate in buffering adapter in case where SampleType is Fixed but no sample rate provided (which is invalid behaviour from the plugin, but we might as well do the right thing with it)

--- a/src/vamp-hostsdk/PluginBufferingAdapter.cpp	Fri Sep 04 13:47:25 2015 +0100
+++ b/src/vamp-hostsdk/PluginBufferingAdapter.cpp	Fri Sep 04 13:48:28 2015 +0100
@@ -41,6 +41,10 @@
 #include <vamp-hostsdk/PluginBufferingAdapter.h>
 #include <vamp-hostsdk/PluginInputDomainAdapter.h>
 
+#include <iostream>
+using std::cerr;
+using std::endl;
+
 using std::vector;
 using std::map;
 
@@ -512,13 +516,13 @@
 
         case OutputDescriptor::OneSamplePerStep:
             outs[i].sampleType = OutputDescriptor::FixedSampleRate;
-            outs[i].sampleRate = (1.f / m_inputSampleRate) * m_stepSize;
+            outs[i].sampleRate = m_inputSampleRate / m_stepSize;
             m_rewriteOutputTimes[i] = true;
             break;
             
         case OutputDescriptor::FixedSampleRate:
             if (outs[i].sampleRate == 0.f) {
-                outs[i].sampleRate = (1.f / m_inputSampleRate) * m_stepSize;
+                outs[i].sampleRate = m_inputSampleRate / m_stepSize;
             }
             // We actually only need to rewrite output times for
             // features that don't have timestamps already, but we
@@ -615,16 +619,25 @@
 PluginBufferingAdapter::Impl::adjustFixedRateFeatureTime(int outputNo,
                                                          Feature &feature)
 {
+//    cerr << "adjustFixedRateFeatureTime: from " << feature.timestamp;
+    
+    double rate = m_outputs[outputNo].sampleRate;
+    if (rate == 0.0) {
+        rate = m_inputSampleRate / m_stepSize;
+    }
+    
     if (feature.hasTimestamp) {
         double secs = feature.timestamp.sec;
         secs += feature.timestamp.nsec / 1e9;
-        m_fixedRateFeatureNos[outputNo] =
-            int(secs * double(m_outputs[outputNo].sampleRate) + 0.5);
+        m_fixedRateFeatureNos[outputNo] = int(secs * rate + 0.5);
+//        cerr << " [secs = " << secs << ", no = " << m_fixedRateFeatureNos[outputNo] << "]";
     }
 
     feature.timestamp = RealTime::fromSeconds
-        (m_fixedRateFeatureNos[outputNo] / double(m_outputs[outputNo].sampleRate));
+        (m_fixedRateFeatureNos[outputNo] / rate);
 
+//    cerr << " to " << feature.timestamp << " (rate = " << rate << ", hasTimestamp = " << feature.hasTimestamp << ")" << endl;
+    
     feature.hasTimestamp = true;
     
     m_fixedRateFeatureNos[outputNo] = m_fixedRateFeatureNos[outputNo] + 1;