transfer-videoframe.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /html/infrastructure/safe-passing-of-structured-data/transfer-videoframe.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>MessageChannel transfer of VideoFrame</title>

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

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

<script>

promise_test(async t => {

    const canvas = new OffscreenCanvas(2, 2);

    const ctx = canvas.getContext("2d");

    ctx.fillRect(0, 0, 2, 2);

    const frame = new VideoFrame(canvas, { timestamp: 0 });

    const channel = new MessageChannel();

    const received = new Promise(resolve => {

        channel.port2.onmessage = e => resolve(e.data);

});

    channel.port1.postMessage(frame, [frame]);

    const copy = await received;

    assert_true(copy instanceof VideoFrame);

    assert_equals(copy.codedWidth, 2);

    assert_equals(copy.codedHeight, 2);

    copy.close();

}, "VideoFrame can be transferred through a MessageChannel");

</script>