Cleanup

audio-worklet/src/jsMain/kotlin/nl/astraeus/vst/chip/ChipProcessor.kt

@@ -149,7 +149,7 @@ class VstChipProcessor : AudioWorkletProcessor() {
     console.log("playMidi", bytes)
     if (bytes.length > 0) {
       var cmdByte = bytes[0]
-      val channelCmd = ((cmdByte shr 4) and 0xf) in 0x8 .. 0xe
+      val channelCmd = ((cmdByte shr 4) and 0xf) != 0xf0
       val channel = cmdByte and 0xf
       println("Channel cmd: $channelCmd")
       if (channelCmd && channel != midiChannel) {

settings.common.gradle.kts

@@ -1,6 +1,6 @@
 pluginManagement {
   plugins {
-    kotlin("multiplatform") version "2.0.0"
+    kotlin("multiplatform") version "2.0.20-Beta1"
     id("org.gradle.toolchains.foojay-resolver-convention") version "0.5.0"
   }
   repositories {

src/jsMain/kotlin/nl/astraeus/vst/chip/audio/VstChipWorklet.kt

@@ -2,6 +2,7 @@ package nl.astraeus.vst.chip.audio
 
 import nl.astraeus.vst.chip.view.MainView
 import nl.astraeus.vst.chip.view.WaveformView
+import nl.astraeus.vst.ui.util.uInt8ArrayOf
 import org.khronos.webgl.Float32Array
 import org.khronos.webgl.Uint8Array
 import org.khronos.webgl.get
@@ -18,46 +19,53 @@ object VstChipWorklet : AudioNode(
       postMessage("waveform\n$value")
     }
   var midiChannel = 0
+   set(value) {
+     check(value in 0..15) {
+       "Midi channel must be between 0 and 15."
+     }
+     field = value
+     postMessage("set_channel\n${midiChannel}")
+   }
   var volume = 0.75
     set(value) {
       field = value
       super.postMessage(
-        Uint8Array(arrayOf(0xb0.toByte(), 0x46.toByte(), (value * 127).toInt().toByte()))
+        uInt8ArrayOf(0xb0 + midiChannel, 0x46, (value * 127).toInt())
       )
     }
   var dutyCycle = 0.5
     set(value) {
       field = value
       super.postMessage(
-        Uint8Array(arrayOf(0xb0.toByte(), 0x4a.toByte(), (value * 127).toInt().toByte()))
+        uInt8ArrayOf(0xb0 + midiChannel, 0x4a, (value * 127).toInt())
       )
     }
   var fmModFreq = 0.0
     set(value) {
       field = value
       super.postMessage(
-        Uint8Array(arrayOf(0xb0.toByte(), 0x4b.toByte(), (value * 127).toInt().toByte()))
+        uInt8ArrayOf(0xb0 + midiChannel, 0x4b, (value * 127).toInt())
       )
     }
   var fmModAmp = 0.0
     set(value) {
       field = value
       super.postMessage(
-        Uint8Array(arrayOf(0xb0.toByte(), 0x4c.toByte(), (value * 127).toInt().toByte()))
+        uInt8ArrayOf(0xb0 + midiChannel, 0x4c, (value * 127).toInt())
       )
     }
   var amModFreq = 0.0
     set(value) {
       field = value
       super.postMessage(
-        Uint8Array(arrayOf(0xb0.toByte(), 0x47.toByte(), (value * 127).toInt().toByte()))
+        uInt8ArrayOf(0xb0 + midiChannel, 0x47, (value * 127).toInt())
       )
     }
   var amModAmp = 0.0
     set(value) {
       field = value
       super.postMessage(
-        Uint8Array(arrayOf(0xb0.toByte(), 0x48.toByte(), (value * 127).toInt().toByte()))
+        uInt8ArrayOf(0xb0 + midiChannel, 0x48, (value * 127).toInt())
       )
     }
   var recording: Float32Array? = null
@@ -125,10 +133,4 @@ object VstChipWorklet : AudioNode(
     }
   }
 
-  fun setChannel(channel: Int) {
-    midiChannel = channel
-
-    postMessage("set_channel\n${midiChannel}")
-  }
-
 }

src/jsMain/kotlin/nl/astraeus/vst/chip/view/MainView.kt

@@ -166,7 +166,7 @@ object MainView : Komponent(), CssName {
             onInputFunction = { event ->
               val target = event.target as HTMLInputElement
               println("onInput channel: $target")
-              VstChipWorklet.setChannel(target.value.toInt())
+              VstChipWorklet.midiChannel = target.value.toInt()
             }
           }
         }