[orx-midi] Add MidiConsole extension, translate note on w/ velocity=0 events to note off

orx-jvm/orx-midi/src/demo/kotlin/DemoMidiDevices.kt

@@ -1,16 +1,15 @@
 import org.openrndr.application
+import org.openrndr.extra.midi.MidiConsole
 import org.openrndr.extra.midi.MidiDeviceDescription
 import org.openrndr.extra.midi.MidiTransceiver
-import org.openrndr.extra.midi.bindMidiControl
-import org.openrndr.extra.parameters.DoubleParameter
 
 fun main() {
     application {
         program {
-            //MidiDeviceDescription.list().forEach { println(it.toString()) }
+            MidiDeviceDescription.list().forEach { println(it.toString()) }
-            val midi = MidiTransceiver.fromDeviceVendor(this,"MIDI2x2 [hw:3,0,0]", "ALSA (http://www.alsa-project.org)")
+            val midi = MidiTransceiver.fromDeviceVendor(this,"Launchpad [hw:4,0,0]", "ALSA (http://www.alsa-project.org)")
-            midi.controlChanged.listen {
+            extend(MidiConsole()) {
-                println(it)
+                register(midi)
             }
         }
     }

orx-jvm/orx-midi/src/main/kotlin/MidiConsole.kt

@@ -0,0 +1,61 @@
+package org.openrndr.extra.midi
+
+import org.openrndr.Extension
+import org.openrndr.Program
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.Drawer
+import org.openrndr.draw.loadFont
+import org.openrndr.math.Vector2
+import org.openrndr.shape.Rectangle
+import java.io.File
+
+class MidiConsole: Extension {
+    override var enabled = true
+
+    var box = Rectangle(0.0, 0.0, 130.0, 200.0)
+    val messages = mutableListOf<String>()
+    var historySize = 2
+
+    val demoFont = File("demo-data/fonts/IBMPlexMono-Regular.ttf").exists()
+
+    fun register(transceiver: MidiTransceiver) {
+        transceiver.controlChanged.listen {
+            synchronized(messages) {
+                messages.add("CC ${it.control}: ${it.value}")
+                if (messages.size > historySize) {
+                    messages.removeAt(0)
+                }
+            }
+        }
+        transceiver.noteOn.listen {
+            synchronized(messages) {
+                messages.add("NOTE ON ${it.note}: ${it.velocity}")
+                if (messages.size > historySize) {
+                    messages.removeAt(0)
+                }
+            }
+        }
+
+        transceiver.noteOff.listen {
+            synchronized(messages) {
+                messages.add("NOTE OFF ${it.note}")
+                if (messages.size > historySize) {
+                    messages.removeAt(0)
+                }
+            }
+        }
+    }
+
+    override fun afterDraw(drawer: Drawer, program: Program)  {
+        drawer.defaults()
+        box = Rectangle(drawer.width - box.width, 0.0, box.width, drawer.height*1.0)
+        val positions = List(messages.size) { index ->
+            Vector2(box.x, box.y + index * 16.0 + 16.0)
+        }
+        if (demoFont) {
+            drawer.fontMap = loadFont("demo-data/fonts/IBMPlexMono-Regular.ttf", 16.0)
+        }
+        drawer.fill = ColorRGBa.WHITE
+        drawer.texts(messages, positions)
+    }
+}

orx-jvm/orx-midi/src/main/kotlin/MidiTransceiver.kt

@@ -124,14 +124,27 @@ class MidiTransceiver(program: Program, val receiverDevice: MidiDevice?, val tra
             override fun send(message: MidiMessage, timeStamp: Long) {
                 val cmd = message.message
                 val channel = (cmd[0].toInt() and 0xff) and 0x0f
+                val velocity = cmd[2].toInt() and 0xff
                 when ((cmd[0].toInt() and 0xff) and 0xf0) {
-                    ShortMessage.NOTE_ON -> noteOn.trigger(
+
-                        MidiEvent.noteOn(
+
-                            channel,
+
-                            cmd[1].toInt() and 0xff,
+                    ShortMessage.NOTE_ON -> if (velocity > 0) {
-                            cmd[2].toInt() and 0xff
+                        noteOn.trigger(
+                            MidiEvent.noteOn(
+                                channel,
+                                cmd[1].toInt() and 0xff,
+                                velocity
+                            )
                         )
-                    )
+                    } else {
+                        noteOff.trigger(
+                            MidiEvent.noteOff(
+                                channel,
+                                cmd[1].toInt() and 0xff
+                            )
+                        )
+                    }
 
                     ShortMessage.NOTE_OFF -> noteOff.trigger(
                         MidiEvent.noteOff(