Improve playback time with big channel counts

Author: aacuevas

Builds/VisualStudio2013/open-ephys.sln

@@ -4,6 +4,11 @@ VisualStudioVersion = 12.0.31101.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "open-ephys", "open-ephys.vcxproj", "{9C924D66-7DEC-1AEF-B375-DB8666BFB909}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{DE917D74-FAF2-41E9-BE61-CD40C62EB7D0}"
+	ProjectSection(SolutionItems) = preProject
+		Performance1.psess = Performance1.psess
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32

Source/Processors/AudioNode/AudioNode.cpp

@@ -111,7 +111,7 @@ void AudioNode::addInputChannel(GenericProcessor* sourceNode, int chan)
 
     int channelIndex = getNextChannel(false);
 
-    setPlayConfigDetails(channelIndex+1,0,44100.0,128);
+    //setPlayConfigDetails(channelIndex+1,0,44100.0,128);
 
     auto dataChannel = sourceNode->getDataChannel(chan);
     auto dataChannelCopy = new DataChannel(*dataChannel);
@@ -121,6 +121,11 @@ void AudioNode::addInputChannel(GenericProcessor* sourceNode, int chan)
 
 }
 
+void AudioNode::updatePlaybackBuffer()
+{
+	setPlayConfigDetails(dataChannelArray.size(), 0, 44100.0, 128);
+}
+
 void AudioNode::setParameter(int parameterIndex, float newValue)
 {
     // change left channel, right channel, or volume

Source/Processors/AudioNode/AudioNode.h

@@ -112,6 +112,9 @@ class AudioNode : public GenericProcessor
     /** Establishes a connection between a channel of a GenericProcessor and the AudioNode. */
     void addInputChannel(GenericProcessor* source, int chan);
 
+	/** Updates the audio buffer size*/
+	void updatePlaybackBuffer();
+
     /** A pointer to the AudioNode's editor. */
     ScopedPointer<AudioEditor> audioEditor;
 

Source/Processors/ProcessorGraph/ProcessorGraph.cpp

@@ -375,6 +375,7 @@ void ProcessorGraph::updateConnections(Array<SignalChainTabButton*, CriticalSect
         } // end while source != 0
     } // end "tabs" for loop
 
+	getAudioNode()->updatePlaybackBuffer();
 	//Update RecordNode internal channel mappings
 	Array<EventChannel*> extraChannels;
 	getMessageCenter()->addSpecialProcessorChannels(extraChannels);

Source/Processors/RecordNode/RecordNode.cpp

@@ -54,7 +54,7 @@ RecordNode::RecordNode()
     settingsNeeded = false;
 
     // 128 inputs, 0 outputs
-    setPlayConfigDetails(getNumInputs(),getNumOutputs(),44100.0,1024);
+    setPlayConfigDetails(getNumInputs(),getNumOutputs(),44100.0,128);
 	m_recordThread = new RecordThread(engineArray);
 	m_dataQueue = new DataQueue(WRITE_BLOCK_LENGTH, DATA_BUFFER_NBLOCKS);
 	m_eventQueue = new EventMsgQueue(EVENT_BUFFER_NEVENTS);