From c0f38e527a3a6b076d0a1edbf4a0a3b73efb2c02 Mon Sep 17 00:00:00 2001
From: Sema <jazz-dev@jazz-soft.net>
Date: Wed, 20 Sep 2023 23:28:24 -0400
Subject: [PATCH] Minor fixes and README.md

---
 README.md         | 22 +++++++++++++++++++++-
 javascript/JZZ.js | 13 +++++++++----
 2 files changed, 30 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index b45ddd3..75f5727 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ or [**Apple App Store**](https://apps.apple.com/us/app/jazz-midi/id1506447231).
 - MIDI files
 - MPE
 - SMPTE
-- UMP
+- UMP (MIDI 2.0)
 - Additional modules
 
 ## Install
@@ -202,6 +202,26 @@ JZZ.MIDI.midi(450);  // => 69.38905773230853
 JZZ.MIDI.midi('A5'); // => 69
 ```
 
+## MIDI 2.0
+
+`MIDI2()` is a sort of adapter that enables MIDI 2.0 in all subsequent chained calls.  
+`MIDI1()` returns the operation back to MIDI 1.0.  
+Note that connected MIDI nodes don't require any actions to receive and transfer MIDI 2.0 messages:
+
+```js
+var first = JZZ.Widget();
+var second = JZZ.Widget();
+first.connect(second);
+second.connect(function (msg) { console.log(msg.toString()); });
+
+first
+  .send([0x90, 0x3c, 0x7f])       // 90 3c 7f -- Note On
+  .MIDI2()                        // enable MIDI 2.0
+  .send([0x20, 0x90, 0x3c, 0x7f]) // 20903c7f -- Note On
+  .MIDI1()                        // reset to MIDI 1.0
+  .send([0x90, 0x3c, 0x7f])       // 90 3c 7f -- Note On
+```
+
 ## Additional modules
 - [**JZZ-midi-SMF**](https://github.com/jazz-soft/JZZ-midi-SMF) - Standard MIDI files: read / write / play
 - [**JZZ-midi-GM**](https://github.com/jazz-soft/JZZ-midi-GM) - General MIDI instrument names: MIDI to string / string to MIDI
diff --git a/javascript/JZZ.js b/javascript/JZZ.js
index 3b9869d..e8d7dd4 100644
--- a/javascript/JZZ.js
+++ b/javascript/JZZ.js
@@ -419,12 +419,15 @@
     }
     return this._thenable();
   };
-  function _midi(msg) { return msg.isMidi2 ? new UMP(msg) : new MIDI(msg); }
+  function _midi(msg) { return msg.isMidi2 ? new UMP(msg) : MIDI.apply(null, arguments); }
   _M.prototype._emit = function(msg) {
-    var i;
-    for (i = 0; i < this._handles.length; i++) this._handles[i].apply(this, [MIDI(msg)._stamp(this)]);
+    var i, m;
+    for (i = 0; i < this._handles.length; i++) {
+      m = _midi(msg);
+      this._handles[i].apply(this, [m._stamp(this)]);
+    }
     for (i = 0; i < this._outs.length; i++) {
-      var m = _midi(msg);
+      m = _midi(msg);
       if (!m._stamped(this._outs[i])) this._outs[i].send(m._stamp(this));
     }
   };
@@ -3348,6 +3351,8 @@
 
   JZZ.UMP = UMP;
   _J.prototype.UMP = UMP;
+  JZZ.MIDI2 = UMP;
+  _J.prototype.MIDI2 = UMP;
 
   JZZ.lib = {};
   JZZ.lib.now = _now;