RTCEncodedVideoFrame-clone.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/RTCEncodedVideoFrame-clone.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>RTCEncodedVideoFrame 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 caller = new RTCPeerConnection({encodedInsertableStreams:true});

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

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

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

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

  const stream = await navigator.mediaDevices.getUserMedia({video:true});

  const videoTrack = stream.getVideoTracks()[0];

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

  const videoSender = caller.addTrack(videoTrack)

  const senderStreams = videoSender.createEncodedStreams();

  const senderReader = senderStreams.readable.getReader();

  const senderWriter = senderStreams.writable.getWriter();

  exchangeIceCandidates(caller, callee);

  // Send 10 frames and stop

  const numFramesToSend = 10;

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

    callee.ontrack = async e => {

      const receiverStreams = e.receiver.createEncodedStreams();

      const receiverReader = receiverStreams.readable.getReader();

      const receiverWriter = receiverStreams.writable.getWriter();

      // This should all be able to happen in 5 seconds.

      // For fast failures, uncomment this line.

      // t.step_timeout(reject, 5000);

      for (let i = 0; i < numFramesToSend; i++) {

        const result = await receiverReader.read();

        // Write upstream, purely to avoid "no frame received" error messages

        receiverWriter.write(result.value);

      resolve();

});

  await exchangeOfferAnswer(caller, callee);

  for (let i = 0; i < numFramesToSend; i++) {

    const result = await senderReader.read();

    senderWriter.write(structuredClone(result.value));

  return framesReceivedCorrectly;

}, "Cloning before sending works");

</script>