Add Core Service to get software timestamp

Source/CoreServices.cpp

@@ -72,6 +72,11 @@ int64 getGlobalTimestamp()
     return getMessageCenter()->getTimestamp();
 }
 
+int64 getSoftwareTimestamp()
+{
+	return getMessageCenter()->getTimestamp(true);
+}
+
 namespace RecordNode
 {
 void createNewrecordingDir()

Source/CoreServices.h

@@ -56,6 +56,9 @@ Defaults to the first hardware timestamp source or the software one if
 no hardware timestamping is present*/
 int64 getGlobalTimestamp();
 
+/** Gets the software timestamp based on a high resolution timer aligned to the start of each processing block */
+int64 getSoftwareTimestamp();
+
 namespace RecordNode
 {
 /** Forces creation of new directory on recording */