Added convenience functions to deal with storing and getting audio parameters and use them

Source/PS_Source/globals.h

@@ -90,6 +90,16 @@ inline void storeToTreeProperties(ValueTree dest, UndoManager* uman, juce::Ident
 	dest.setProperty(varname+"_end", x.getEnd(), uman);
 }
 
+inline void storeToTreeProperties(ValueTree dest, UndoManager* uman, AudioParameterBool* par)
+{
+    if (par) dest.setProperty(par->paramID,(bool)*par,uman);
+}
+
+inline void storeToTreeProperties(ValueTree dest, UndoManager* uman, AudioParameterInt* par)
+{
+    if (par) dest.setProperty(par->paramID,(int)*par,uman);
+}
+
 template<typename T>
 inline void getFromTreeProperties(ValueTree src, juce::Identifier varname, T& val)
 {
@@ -115,6 +125,15 @@ inline void getFromTreeProperties(ValueTree src, juce::Identifier varname, Range
 	}
 }
 
+template<typename T>
+inline void getFromTreeProperties(ValueTree src, T par)
+{
+    if (par!=nullptr && src.hasProperty(par->paramID))
+    {
+        *par = src.getProperty(par->paramID);
+    }
+}
+
 template<typename F>
 inline void timeCall(String msgprefix,F&& f)
 {

Source/PluginProcessor.cpp

@@ -210,10 +210,10 @@ ValueTree PaulstretchpluginAudioProcessor::getStateTree(bool ignoreoptions, bool
 			paramtree.setProperty(par->paramID, (double)*par, nullptr);
 		}
 	}
-	paramtree.setProperty(m_outchansparam->paramID, (int)*m_outchansparam, nullptr);
-	paramtree.setProperty(m_inchansparam->paramID, (int)*m_inchansparam, nullptr);
-	paramtree.setProperty(getBoolParameter(cpi_bypass_stretch)->paramID, (bool)*getBoolParameter(cpi_bypass_stretch), nullptr);
-	if (m_current_file != File() && ignorefile == false)
+	storeToTreeProperties(paramtree, nullptr, m_outchansparam);
+    storeToTreeProperties(paramtree, nullptr, m_inchansparam);
+    storeToTreeProperties(paramtree, nullptr, getBoolParameter(cpi_bypass_stretch));
+    if (m_current_file != File() && ignorefile == false)
 	{
 		paramtree.setProperty("importedfile", m_current_file.getFullPathName(), nullptr);
 	}
@@ -264,13 +264,10 @@ void PaulstretchpluginAudioProcessor::setStateFromTree(ValueTree tree)
 					*par = parval;
 				}
 			}
-			if (tree.hasProperty(m_outchansparam->paramID))
-				*m_outchansparam = tree.getProperty(m_outchansparam->paramID, 2);
-			if (tree.hasProperty(m_inchansparam->paramID))
-				*m_inchansparam = tree.getProperty(m_inchansparam->paramID, 2);
-			if (tree.hasProperty(getBoolParameter(cpi_bypass_stretch)->paramID))
-				*getBoolParameter(cpi_bypass_stretch) = tree.getProperty(getBoolParameter(cpi_bypass_stretch)->paramID, false);
-		}
+            getFromTreeProperties(tree, m_outchansparam);
+            getFromTreeProperties(tree, m_inchansparam);
+            getFromTreeProperties(tree, getBoolParameter(cpi_bypass_stretch));
+        }
 		int prebufamt = tree.getProperty("prebufamount", 2);
 		if (prebufamt == -1)
 			m_use_backgroundbuffering = false;