tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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video-decoder.crossOriginIsolated.https.any.js (2182B)

      1 // META: global=window,dedicatedworker
      2 // META: script=/webcodecs/utils.js
      3 
      4 const testData = {
      5  src: 'h264.mp4',
      6  config: {
      7    codec: 'avc1.64000b',
      8    description: {offset: 9490, size: 45},
      9    codedWidth: 320,
     10    codedHeight: 240,
     11    displayAspectWidth: 320,
     12    displayAspectHeight: 240,
     13  }
     14 };
     15 
     16 // Create a view of an ArrayBuffer.
     17 function view(buffer, {offset, size}) {
     18  return new Uint8Array(buffer, offset, size);
     19 }
     20 
     21 function testSharedArrayBufferDescription(t, useView) {
     22  const data = testData;
     23 
     24  // Don't run test if the codec is not supported.
     25  assert_equals("function", typeof VideoDecoder.isConfigSupported);
     26  let supported = false;
     27  return VideoDecoder.isConfigSupported({codec: data.config.codec})
     28      .catch(_ => {
     29        assert_implements_optional(false, data.config.codec + ' unsupported');
     30      })
     31      .then(support => {
     32        supported = support.supported;
     33        assert_implements_optional(
     34            supported, data.config.codec + ' unsupported');
     35        return fetch(data.src);
     36      })
     37      .then(response => {
     38        return response.arrayBuffer();
     39      })
     40      .then(buf => {
     41        config = {...data.config};
     42        if (data.config.description) {
     43          let desc = new SharedArrayBuffer(data.config.description.size);
     44          let descView = new Uint8Array(desc);
     45          descView.set(view(buf, data.config.description));
     46          config.description = useView ? descView : desc;
     47        }
     48 
     49        // Support was verified above, so the description shouldn't change
     50        // that.
     51        return VideoDecoder.isConfigSupported(config);
     52      })
     53      .then(support => {
     54        assert_true(support.supported);
     55 
     56        const decoder = new VideoDecoder(getDefaultCodecInit(t));
     57        decoder.configure(config);
     58        assert_equals(decoder.state, 'configured', 'state');
     59      });
     60 }
     61 
     62 promise_test(t => {
     63  return testSharedArrayBufferDescription(t, /*useView=*/ false);
     64 }, 'Test isConfigSupported() and configure() using a SharedArrayBuffer');
     65 
     66 promise_test(t => {
     67  return testSharedArrayBufferDescription(t, /*useView=*/ true);
     68 }, 'Test isConfigSupported() and configure() using a Uint8Array(SharedArrayBuffer)');