videoFrame-encode-preserves-input.https.any.js

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This test has a WPT meta file that expects 6 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /webcodecs/videoFrame-encode-preserves-input.https.any.html - WPT Dashboard Interop Dashboard
- /webcodecs/videoFrame-encode-preserves-input.https.any.worker.html - WPT Dashboard Interop Dashboard

// META: global=window,dedicatedworker

// META: script=/webcodecs/videoFrame-utils.js

// META: script=/webcodecs/video-encoder-utils.js

// META: script=/webcodecs/videoFrame-encode-preserves-input-utils.js

// Encoding a VideoFrame must not rewrite the frame's own pixel data in place,

// regardless of the frame's pixel format. The frame is deliberately never

// rasterized before encoding.

const WIDTH = 64;

const HEIGHT = 64;

for (const format of ENCODE_FORMATS) {

  for (const codec of ENCODE_CODECS) {

    promise_test(async t => {

      const config = makeEncoderConfig(codec, WIDTH, HEIGHT);

      await checkEncoderSupport(t, config);

      const frame = new VideoFrame(makeFrameData(format, WIDTH, HEIGHT), {

        format,

        codedWidth: WIDTH,

        codedHeight: HEIGHT,

        timestamp: 0,

});

      // clone() shares the frame's underlying image data.

      const clone = frame.clone();

      const frameBefore = await snapshot(frame);

      const cloneBefore = await snapshot(clone);

      await encode(frame, config,

                   t.unreached_func('unexpected encoder error'));

      assert_buffer_equals(await snapshot(frame), frameBefore);

      assert_buffer_equals(await snapshot(clone), cloneBefore);

      frame.close();

      clone.close();

    }, `Encoding a ${format} VideoFrame with ${codec.codec} preserves its ` +

       `input pixels`);