Initial commit

src/jsAudioWorkletMain/resources/worklet-processor.js

@@ -0,0 +1,54 @@
+; // make sure kotlin js code last statement is ended
+
+class WorkletProcessor extends AudioWorkletProcessor {
+
+    // Static getter to define AudioParam objects in this custom processor.
+    static get parameterDescriptors() {
+        return [{
+            name: 'volume',
+            defaultValue: 0.75
+        }];
+    }
+
+    constructor() {
+        super();
+
+        console.log("worklet-processor.constructor", this, audioWorklet);
+
+        audioWorklet.nl.astraeus.processor.WorkletProcessor.setPort(this.port);
+
+        console.log("STARTED worklet-processor.js");
+    }
+
+    process(inputs, outputs, parameters) {
+        let result = true;
+        let samplesToProcess = 0;
+
+        if (outputs.length !== 1) {
+            result = false;
+            console.log("Unexpected number of outputs!", outputs)
+        } else {
+            let channels = outputs[0].length;
+
+            if (channels !== 2) {
+                result = false;
+                console.log("Unexpected number of channels!", outputs[0]);
+            } else if (outputs[0][0].length !== outputs[0][1].length) {
+                result = false;
+                console.log("Channels have different lengths!!", outputs[0]);
+            } else {
+                samplesToProcess = outputs[0][0].length;
+
+                audioWorklet.nl.astraeus.processor.WorkletProcessor.process(
+                    samplesToProcess,
+                    outputs[0][0],
+                    outputs[0][1]
+                );
+            }
+        }
+
+        return result;
+    }
+}
+
+registerProcessor('worklet-processor', WorkletProcessor);