RTCEncodedAudioFrame-receive-cloned.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /webrtc-encoded-transform/tentative/RTCEncodedAudioFrame-receive-cloned.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>RTCEncodedAudioFrame can be cloned and distributed</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src=/resources/testdriver.js></script>

<script src=/resources/testdriver-vendor.js></script>

<script src='../../mediacapture-streams/permission-helper.js'></script>

<script src="../../webrtc/RTCPeerConnection-helper.js"></script>

<script src="../../service-workers/service-worker/resources/test-helpers.sub.js"></script>

<script>

"use strict";

promise_test(async t => {

  const caller1 = new RTCPeerConnection();

  t.add_cleanup(() => caller1.close());

  const callee1 = new RTCPeerConnection({encodedInsertableStreams:true});

  t.add_cleanup(() => callee1.close());

  await setMediaPermission("granted", ["microphone"]);

  const inputStream = await navigator.mediaDevices.getUserMedia({audio:true});

  const inputTrack = inputStream.getAudioTracks()[0];

  t.add_cleanup(() => inputTrack.stop());

  caller1.addTrack(inputTrack)

  exchangeIceCandidates(caller1, callee1);

  const caller2 = new RTCPeerConnection({encodedInsertableStreams:true});

  t.add_cleanup(() => caller2.close());

  const sender2 = caller2.addTransceiver("audio").sender;

  const writer2 = sender2.createEncodedStreams().writable.getWriter();

  sender2.replaceTrack(new MediaStreamTrackGenerator({ kind: 'audio' }));

  const framesReceivedCorrectly = new Promise((resolve, reject) => {

    callee1.ontrack = async e => {

      const receiverStreams = e.receiver.createEncodedStreams();

      const receiverReader = receiverStreams.readable.getReader();

      const receiverWriter = receiverStreams.writable.getWriter();

      const result = await receiverReader.read();

      const originalAudioFrame = result.value;

      let clonedAudioFrame = structuredClone(originalAudioFrame);

      assert_equals(originalAudioFrame.timestamp, clonedAudioFrame.timestamp);

      assert_array_equals(Array.from(originalAudioFrame.data), Array.from(clonedAudioFrame.data));

      await writer2.write(clonedAudioFrame);

      await receiverWriter.write(structuredClone(originalAudioFrame));

      resolve();

});

  await exchangeOfferAnswer(caller1, callee1);

  return framesReceivedCorrectly;

}, "Cloning before sending works");

</script>