diff AgentFeeder.cpp @ 53:19c8c6ca4406

Add overlooked file!

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AgentFeeder.cpp	Wed Sep 26 17:14:03 2012 +0100
@@ -0,0 +1,101 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+/*
+    This file is Copyright (c) 2012 Chris Cannam
+  
+    Permission is hereby granted, free of charge, to any person
+    obtaining a copy of this software and associated documentation
+    files (the "Software"), to deal in the Software without
+    restriction, including without limitation the rights to use, copy,
+    modify, merge, publish, distribute, sublicense, and/or sell copies
+    of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be
+    included in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+    ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+    CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include "AgentFeeder.h"
+
+void AgentFeeder::feed(NoteHypothesis::Estimate e)
+{
+    if (!m_current.accept(e)) {
+
+	if (m_current.getState() == NoteHypothesis::Expired) {
+	    m_accepted.push_back(m_current);
+	}
+
+	bool swallowed = false;
+
+	Hypotheses newCandidates;
+
+	for (typename Hypotheses::iterator i = m_candidates.begin();
+	     i != m_candidates.end(); ++i) {
+
+	    NoteHypothesis h = *i;
+                
+	    if (swallowed) {
+
+		// don't offer: each observation can only belong to one
+		// satisfied hypothesis
+		newCandidates.push_back(h);
+
+	    } else {
+
+		if (h.accept(e)) {
+
+		    if (h.getState() == NoteHypothesis::Satisfied) {
+
+			swallowed = true;
+        
+			if (m_current.getState() == NoteHypothesis::Expired ||
+			    m_current.getState() == NoteHypothesis::Rejected) {
+			    m_current = h;
+			} else {
+			    newCandidates.push_back(h);
+			}
+                            
+		    } else {
+			newCandidates.push_back(h);
+		    }
+		}
+	    }
+	}
+            
+	if (!swallowed) {
+	    NoteHypothesis h;
+	    h.accept(e); // must succeed, as h is new
+	    newCandidates.push_back(h);
+	}
+
+	// reap rejected/expired hypotheses from candidates list,
+	// and assign back to m_candidates
+
+	m_candidates.clear();
+
+	for (typename Hypotheses::const_iterator i = newCandidates.begin();
+	     i != newCandidates.end(); ++i) {
+	    NoteHypothesis h = *i;
+	    if (h.getState() != NoteHypothesis::Rejected && 
+		h.getState() != NoteHypothesis::Expired) {
+		m_candidates.push_back(h);
+	    }
+	}
+    }  
+}
+
+void
+AgentFeeder::finish()
+{
+    if (m_current.getState() == NoteHypothesis::Satisfied) {
+	m_accepted.push_back(m_current);
+    }
+}
+