coffee shop code

scripts/midi.js

@@ -0,0 +1,34 @@
+var midi, data;
+// request MIDI access
+if (navigator.requestMIDIAccess) {
+    navigator.requestMIDIAccess({
+        sysex: false
+    }).then(onMIDISuccess, onMIDIFailure);
+} else {
+    alert("No MIDI support in your browser.");
+}
+
+// midi functions
+function onMIDISuccess(midiAccess) {
+    // when we get a succesful response, run this code
+    midi = midiAccess; // this is our raw MIDI data, inputs, outputs, and sysex status
+
+    var inputs = midi.inputs.values();
+    // loop over all available inputs and listen for any MIDI input
+    for (var input = inputs.next(); input && !input.done; input = inputs.next()) {
+        // each time there is a midi message call the onMIDIMessage function
+        input.value.onmidimessage = onMIDIMessage;
+    }
+}
+
+function onMIDIFailure(error) {
+    // when we get a failed response, run this code
+    console.log("No access to MIDI devices or your browser doesn't support WebMIDI API. Please use WebMIDIAPIShim " + error);
+}
+
+function onMIDIMessage(message) {
+    data = message.data; // this gives us our [command/channel, note, velocity] data.
+    console.log('MIDI data', data); // MIDI data [144, 63, 73]
+    midiNote(data[1], data[2]);
+    midiNote2(data[1], data[2]);
+}