<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
<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>
    </head>
    <body>
        <video id="video1" autoplay></video>
        <video id="video2" autoplay></video>
        <script src ="routines.js"></script>
        <script>

promise_test(async (test) => {
  const worker = await createWorker('script-transform-worker.js');
  const transform = await createTransform(worker);
  transform.port.postMessage("ping");
  assert_equals(await getNextMessage(transform.port), "pong");
}, "transform messaging");

promise_test(async (test) => {
  const {sender, receiver, senderPc, receiverPc} = await createConnectionWithTransform(test, 'script-transform-worker.js', {audio: true});

  const sender2 = senderPc.addTransceiver('video').sender;
  const receiver2 = senderPc.getReceivers()[1];

  assert_throws_dom("InvalidStateError", () => sender2.transform = sender.transform);
  assert_throws_dom("InvalidStateError", () => receiver2.transform = receiver.transform);

  sender.transform = sender.transform;
  receiver.transform = receiver.transform;

  sender.transform = null;
  receiver.transform = null;
}, "Cannot reuse attached transforms");

promise_test(async (test) => {
  const {sender, receiver, senderPc, receiverPc} = await createConnectionWithTransform(test, 'script-transform-worker.js', {audio: true});
  assert_equals(await getNextMessage(sender.transform.port), "audio chunk");

  video1.srcObject = new MediaStream([receiver.track]);
  await video1.play();
}, "audio exchange with transform");

promise_test(async (test) => {
  const {sender, receiver, senderPc, receiverPc} = await createConnectionWithTransform(test, 'script-transform-worker.js', {video: true});

  assert_equals(await getNextMessage(sender.transform.port), "video chunk");
  // First frame should be a keyframe
  assert_equals(await getNextMessage(sender.transform.port), "video keyframe");

  video1.srcObject = new MediaStream([receiver.track]);
  await video1.play();
}, "video exchange with transform");
        </script>
    </body>
</html>