1 files changed, 22 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/input-count-processor.js b/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/input-count-processor.js
new file mode 100644
index 0000000000..6d53ba84c7
--- /dev/null
+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioworklet-interface/processors/input-count-processor.js
@@ -0,0 +1,22 @@
+/**
+ * @class CountProcessor
+ * @extends AudioWorkletProcessor
+ *
+ * This processor class just looks at the number of input channels on the first
+ * input and fills the first output channel with that value.
+ */
+class CountProcessor extends AudioWorkletProcessor {
+  constructor() {
+    super();
+  }
+
+  process(inputs, outputs, parameters) {
+    let input = inputs[0];
+    let output = outputs[0];
+    output[0].fill(input.length);
+
+    return true;
+  }
+}
+
+registerProcessor('counter', CountProcessor);