web: fix audio on firefox

gui/assets/rust_audio_worklet.js

@@ -1,7 +1,7 @@
 const SAMPLE_RATE = 48000;
 const PACKET_SAMPLES = 960;
 
-class RustWorklet extends AudioWorkletProcessor {
+class RustMicWorklet extends AudioWorkletProcessor {
   constructor(options) {
     super();
     this.module = options.processorOptions;
@@ -31,7 +31,7 @@ class RustWorklet extends AudioWorkletProcessor {
     }
     this.buffer_offset -= PACKET_SAMPLES;
     this.timestamp = null;
-   }
+  }
 
   process(inputs) {
     //console.log(inputs);
@@ -60,4 +60,44 @@ class RustWorklet extends AudioWorkletProcessor {
   }
 };
 
-registerProcessor("rust_mic_worklet", RustWorklet);
+
+class RustSpeakerWorklet extends AudioWorkletProcessor {
+  constructor() {
+    super();
+    this.queue = [];
+    this.readIndex = 0;
+
+    this.port.onmessage = (event) => {
+      this.queue.push(event.data)
+    };
+  }
+
+  process(inputs, outputs) {
+    if (this.queue.length) {
+      console.log(this.queue[0].samples.length, outputs[0][0].length);
+    }
+
+    const output = outputs[0];
+
+    for (let i = 0; i < output[0].length; i++) {
+      if (!this.queue.length) {
+        return true;
+      }
+      const current = this.queue[0];
+      for (let ch = 0; ch < output.length; ch++) {
+        output[ch][i] = current.samples[this.readIndex];
+      }
+      this.readIndex++;
+      if (this.readIndex >= current.samples.length) {
+        this.queue.shift();
+        this.readIndex = 0;
+      }
+    }
+    return true;
+  }
+};
+
+
+
+registerProcessor("rust_mic_worklet", RustMicWorklet);
+registerProcessor("rust_speaker_worklet", RustSpeakerWorklet);