From bcd3f8f33a492885b8e4803a246b16d69146d2fb Mon Sep 17 00:00:00 2001
From: Francois Best <francoisbest@gmail.com>
Date: Wed, 21 May 2014 08:30:15 +0200
Subject: [PATCH] Low, High and Last playing modes.

---
 .../MIDI_SimpleSynth/MIDI_SimpleSynth.ino     |  9 ++-
 res/Examples/MIDI_SimpleSynth/noteList.h      | 65 +++++++++++++++++--
 2 files changed, 66 insertions(+), 8 deletions(-)

diff --git a/res/Examples/MIDI_SimpleSynth/MIDI_SimpleSynth.ino b/res/Examples/MIDI_SimpleSynth/MIDI_SimpleSynth.ino
index c44c441..205611a 100644
--- a/res/Examples/MIDI_SimpleSynth/MIDI_SimpleSynth.ino
+++ b/res/Examples/MIDI_SimpleSynth/MIDI_SimpleSynth.ino
@@ -41,8 +41,13 @@ void handleNotesChanged()
     }
     else
     {
+        // Possible playing modes:
+        // Mono Low:  use midiNotes.getLow
+        // Mono High: use midiNotes.getHigh
+        // Mono Last: use midiNotes.getLast
+
         byte currentNote = 0;
-        if (midiNotes.getTail(currentNote))
+        if (midiNotes.getLast(currentNote))
         {
             tone(sAudioOutPin, sNotePitches[currentNote]);
             pulseGate(); // Retrigger envelopes. Remove for legato effect.
@@ -67,7 +72,7 @@ void handleNoteOff(byte inChannel, byte inNote, byte inVelocity)
 // -----------------------------------------------------------------------------
 
 void setup()
-{  
+{
     pinMode(sGatePin,     OUTPUT);
     pinMode(sAudioOutPin, OUTPUT);
     MIDI.setHandleNoteOn(handleNoteOn);
diff --git a/res/Examples/MIDI_SimpleSynth/noteList.h b/res/Examples/MIDI_SimpleSynth/noteList.h
index 6d5885c..c5b5190 100644
--- a/res/Examples/MIDI_SimpleSynth/noteList.h
+++ b/res/Examples/MIDI_SimpleSynth/noteList.h
@@ -65,7 +65,9 @@ public:
 
 public:
     inline bool get(byte inIndex, byte& outPitch) const;
-    inline bool getTail(byte& outPitch) const;
+    inline bool getLast(byte& outPitch) const;
+    inline bool getHigh(byte& outPitch) const;
+    inline bool getLow(byte& outPitch) const;
 
 public:
     inline bool empty() const;
@@ -257,14 +259,65 @@ inline bool MidiNoteList<Size>::get(byte inIndex, byte& outPitch) const
 }
 
 template<byte Size>
-inline bool MidiNoteList<Size>::getTail(byte& outPitch) const
+inline bool MidiNoteList<Size>::getLast(byte& outPitch) const
 {
-    if (mTail)
+    if (!mTail)
     {
-        outPitch = mTail->note.pitch;
-        return true;
+        return false;
     }
-    return false;
+
+    outPitch = mTail->note.pitch;
+    return true;
+}
+
+template<byte Size>
+inline bool MidiNoteList<Size>::getHigh(byte& outPitch) const
+{
+    if (!mTail)
+    {
+        return false;
+    }
+
+    outPitch = 0;
+    const Cell* it = mTail;
+    for (byte i = 0; i < mSize; ++i)
+    {
+        if (it->note.pitch > outPitch)
+        {
+            outPitch = it->note.pitch;
+        }
+
+        if (it->prev)
+        {
+            it = it->prev;
+        }
+    }
+    return true;
+}
+
+template<byte Size>
+inline bool MidiNoteList<Size>::getLow(byte& outPitch) const
+{
+    if (!mTail)
+    {
+        return false;
+    }
+
+    outPitch = 0xff;
+    const Cell* it = mTail;
+    for (byte i = 0; i < mSize; ++i)
+    {
+        if (it->note.pitch < outPitch)
+        {
+            outPitch = it->note.pitch;
+        }
+
+        if (it->prev)
+        {
+            it = it->prev;
+        }
+    }
+    return true;
 }
 
 // -----------------------------------------------------------------------------