webcodecs/video-encoder-config.https.any.js

// META: global=window,dedicatedworker
// META: script=/webcodecs/utils.js

const invalidConfigs = [
  {
    comment: 'Emtpy codec',
    config: {
      codec: '',
      width: 640,
      height: 480,
    },
  },
  {
    comment: 'Unrecognized codec',
    config: {
      codec: 'bogus',
      width: 640,
      height: 480,
    },
  },
  {
    comment: 'Width is too large',
    config: {
      codec: 'vp8',
      width: 1000000,
      height: 480,
    },
  },
  {
    comment: 'Height is too large',
    config: {
      codec: 'vp8',
      width: 640,
      height: 1000000,
    },
  },
  {
    comment: 'Invalid scalability mode',
    config: {codec: 'vp8', width: 640, height: 480, scalabilityMode: 'ABC'}
  }
];

invalidConfigs.forEach(entry => {
  promise_test(t => {
    return promise_rejects_js(t, TypeError, VideoEncoder.isConfigSupported(entry.config));
  }, 'Test that VideoEncoder.isConfigSupported() rejects invalid config:' + entry.comment);
});


const validButUnsupportedConfigs = [
  {
    comment: 'Too strenuous accelerated encoding parameters',
    config: {
      codec: "vp8",
      hardwareAcceleration: "prefer-hardware",
      width: 7000,
      height: 7000,
      bitrate: 1,
      framerate: 240,
    }
  },
  {
    comment: 'Odd sized frames for H264',
    config: {
      codec: "avc1.42001E",
      width: 641,
      height: 480,
      bitrate: 1000000,
      framerate: 24,
    }
  },
];

validButUnsupportedConfigs.forEach(entry => {
  let config = entry.config;
  promise_test(async t => {
    let support = await VideoEncoder.isConfigSupported(config);
    assert_false(support.supported);

    let new_config = support.config;
    assert_equals(new_config.codec, config.codec);
    assert_equals(new_config.width, config.width);
    assert_equals(new_config.height, config.height);
    if (config.bitrate)
      assert_equals(new_config.bitrate, config.bitrate);
    if (config.framerate)
      assert_equals(new_config.framerate, config.framerate);
  }, "VideoEncoder.isConfigSupported() doesn't support config:" + entry.comment);
});

const validConfigs = [
  {
    codec: 'avc1.42001E',
    hardwareAcceleration: 'no-preference',
    width: 640,
    height: 480,
    bitrate: 5000000,
    framerate: 24,
    avc: {format: 'annexb'},
    futureConfigFeature: 'foo',
  },
  {
    codec: 'vp8',
    hardwareAcceleration: 'no-preference',
    width: 800,
    height: 600,
    bitrate: 7000000,
    bitrateMode: 'variable',
    framerate: 60,
    scalabilityMode: 'L1T2',
    futureConfigFeature: 'foo',
    latencyMode: 'quality',
    avc: {format: 'annexb'}
  },
  {
    codec: 'vp09.00.10.08',
    hardwareAcceleration: 'no-preference',
    width: 1280,
    height: 720,
    bitrate: 7000000,
    bitrateMode: 'constant',
    framerate: 25,
    futureConfigFeature: 'foo',
    latencyMode: 'realtime',
    alpha: 'discard'
  }
];

validConfigs.forEach(config => {
  promise_test(async t => {
    let support = await VideoEncoder.isConfigSupported(config);
    assert_implements_optional(support.supported);

    let new_config = support.config;
    assert_false(new_config.hasOwnProperty('futureConfigFeature'));
    assert_equals(new_config.codec, config.codec);
    assert_equals(new_config.width, config.width);
    assert_equals(new_config.height, config.height);
    if (config.bitrate)
      assert_equals(new_config.bitrate, config.bitrate);
    if (config.framerate)
      assert_equals(new_config.framerate, config.framerate);
    if (config.bitrateMode)
      assert_equals(new_config.bitrateMode, config.bitrateMode);
    if (config.latencyMode)
      assert_equals(new_config.latencyMode, config.latencyMode);
    if (config.alpha)
      assert_equals(new_config.alpha, config.alpha);
    if (config.codec.startsWith('avc')) {
      if (config.avc) {
        assert_equals(new_config.avc.format, config.avc.format);
      }
    } else {
      assert_equals(new_config.avc, undefined);
    }
  }, "VideoEncoder.isConfigSupported() supports:" + JSON.stringify(config));
});