add option to keep effects running even without input

src/core/Effect.cpp

@@ -31,6 +31,8 @@
 #include "EffectControls.h"
 #include "EffectView.h"
 
+#include "config_mgr.h"
+
 
 Effect::Effect( const Plugin::Descriptor * _desc,
 			Model * _parent,
@@ -131,6 +133,11 @@ Effect * Effect::instantiate( const QString& pluginName,
 
 void Effect::checkGate( double _out_sum )
 {
+	if( configManager::inst()->isAutoquitDisabled() )
+	{
+		return;
+	}
+
 	// Check whether we need to continue processing input.  Restart the
 	// counter if the threshold has been exceeded.
 	if( _out_sum - gate() <= typeInfo<float>::minEps() )

src/gui/setup_dialog.cpp

@@ -289,6 +289,15 @@ setupDialog::setupDialog( ConfigTabs _tab_to_open ) :
 	connect( displayWaveform, SIGNAL( toggled( bool ) ),
 				this, SLOT( toggleDisplayWaveform( bool ) ) );
 
+	ledCheckBox * disableAutoquit = new ledCheckBox(
+				tr( "Keep effects running even without input" ),
+								misc_tw );
+	labelNumber++;
+	disableAutoquit->move( XDelta, YDelta*labelNumber );
+	disableAutoquit->setChecked( configManager::inst()->isAutoquitDisabled() );
+	connect( disableAutoquit, SIGNAL( toggled( bool ) ),
+				this, SLOT( toggleDisableAutoquit( bool ) ) );
+
 	misc_tw->setFixedHeight( YDelta*labelNumber + HeaderSize );
 
 
@@ -813,6 +822,8 @@ void setupDialog::accept()
 					QString::number( m_printNoteLabels ) );
 	configManager::inst()->setValue( "ui", "displaywaveform",
 					QString::number( m_displayWaveform ) );
+	configManager::inst()->setValue( "ui", "disableautoquit",
+					QString::number( configManager::inst()->isAutoquitDisabled() ) );
 
 
 	configManager::inst()->setWorkingDir( m_workingDir );
@@ -1002,6 +1013,12 @@ void setupDialog::toggleDisplayWaveform( bool en )
 }
 
 
+void setupDialog::toggleDisableAutoquit( bool en )
+{
+	configManager::inst()->setAutoquitDisabled( en );
+}
+
+
 void setupDialog::toggleOneInstrumentTrackWindow( bool _enabled )
 {
 	m_oneInstrumentTrackWindow = _enabled;