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How to use createVideoDecoder method in wpt

Best JavaScript code snippet using wpt

videoDecoder-codec-specific.https.any.js

Source:videoDecoder-codec-specific.https.any.js

...94  ]95};96// Allows mutating `callbacks` after constructing the VideoDecoder, wraps calls97// in t.step().98function createVideoDecoder(t, callbacks) {99  return new VideoDecoder({100    output(frame) {101      if (callbacks && callbacks.output) {102        t.step(() => callbacks.output(frame));103      } else {104        t.unreached_func('unexpected output()');105      }106    },107    error(e) {108      if (callbacks && callbacks.error) {109        t.step(() => callbacks.error(e));110      } else {111        t.unreached_func('unexpected error()');112      }113    }114  });115}116function createCorruptChunk(index) {117  let bad_data = CHUNK_DATA[index];118  for (var i = 0; i < bad_data.byteLength; i += 4)119    bad_data[i] = 0xFF;120  return new EncodedVideoChunk(121      {type: 'delta', timestamp: index, data: bad_data});122}123// Create a view of an ArrayBuffer.124function view(buffer, {offset, size}) {125  return new Uint8Array(buffer, offset, size);126}127let CONFIG = null;128let CHUNK_DATA = null;129let CHUNKS = null;130promise_setup(async () => {131  const data = {132    '?av1': AV1_DATA,133    '?vp8': VP8_DATA,134    '?vp9': VP9_DATA,135    '?h264_avc': H264_AVC_DATA,136    '?h264_annexb': H264_ANNEXB_DATA137  }[location.search];138  // Don't run any tests if the codec is not supported.139  let supported = false;140  try {141    // TODO(sandersd): To properly support H.264 in AVC format, this should142    // include the `description`. For now this test assumes that H.264 Annex B143    // support is the same as H.264 AVC support.144    const support =145        await VideoDecoder.isConfigSupported({codec: data.config.codec});146    supported = support.supported;147  } catch (e) {148  }149  assert_implements_optional(supported, data.config.codec + ' unsupported');150  // Fetch the media data and prepare buffers.151  const response = await fetch(data.src);152  const buf = await response.arrayBuffer();153  CONFIG = {...data.config};154  if (data.config.description) {155    CONFIG.description = view(buf, data.config.description);156  }157  CHUNK_DATA = data.chunks.map((chunk, i) => view(buf, chunk));158  CHUNKS = CHUNK_DATA.map(159      (data, i) => new EncodedVideoChunk(160          {type: i == 0 ? 'key' : 'delta', timestamp: i, duration: 1, data}));161});162promise_test(async t => {163  const support = await VideoDecoder.isConfigSupported(CONFIG);164  assert_true(support.supported, 'supported');165}, 'Test isConfigSupported()');166promise_test(async t => {167  // TODO(sandersd): Create a 1080p `description` for H.264 in AVC format.168  // This version is testing only the H.264 Annex B path.169  const config = {170    codec: CONFIG.codec,171    codedWidth: 1920,172    codedHeight: 1088,173    displayAspectWidth: 1920,174    displayAspectHeight: 1080,175  };176  const support = await VideoDecoder.isConfigSupported(config);177  assert_true(support.supported, 'supported');178}, 'Test isConfigSupported() with 1080p crop');179promise_test(async t => {180  // Define a valid config that includes a hypothetical `futureConfigFeature`,181  // which is not yet recognized by the User Agent.182  const config = {183    ...CONFIG,184    colorSpace: {primaries: 'bt709'},185    futureConfigFeature: 'foo',186  };187  // The UA will evaluate validConfig as being "valid", ignoring the188  // `futureConfigFeature` it  doesn't recognize.189  const support = await VideoDecoder.isConfigSupported(config);190  assert_true(support.supported, 'supported');191  assert_equals(support.config.codec, config.codec, 'codec');192  assert_equals(support.config.codedWidth, config.codedWidth, 'codedWidth');193  assert_equals(support.config.codedHeight, config.codedHeight, 'codedHeight');194  assert_equals(support.config.displayAspectWidth, config.displayAspectWidth, 'displayAspectWidth');195  assert_equals(support.config.displayAspectHeight, config.displayAspectHeight, 'displayAspectHeight');196  assert_equals(support.config.colorSpace.primaries, config.colorSpace.primaries, 'color primaries');197  assert_equals(support.config.colorSpace.transfer, undefined, 'color transfer');198  assert_equals(support.config.colorSpace.matrix, undefined, 'color matrix');199  assert_equals(support.config.colorSpace.fullRange, undefined, 'color range');200  assert_false(support.config.hasOwnProperty('futureConfigFeature'), 'futureConfigFeature');201  if (config.description) {202    // The description must be copied.203    assert_false(204        support.config.description === config.description,205        'description is unique');206    assert_array_equals(207        new Uint8Array(support.config.description, 0),208        new Uint8Array(config.description, 0), 'description');209  } else {210    assert_false(support.config.hasOwnProperty('description'), 'description');211  }212}, 'Test that isConfigSupported() returns a parsed configuration');213promise_test(async t => {214  async function test(t, config, description) {215    await promise_rejects_js(216        t, TypeError, VideoDecoder.isConfigSupported(config), description);217    const decoder = createVideoDecoder(t);218    assert_throws_js(TypeError, () => decoder.configure(config), description);219    assert_equals(decoder.state, 'unconfigured', 'state');220  }221  await test(t, {...CONFIG, codedWidth: 0}, 'invalid codedWidth');222  await test(t, {...CONFIG, displayAspectWidth: 0}, 'invalid displayAspectWidth');223}, 'Test invalid configs');224promise_test(async t => {225  const decoder = createVideoDecoder(t);226  decoder.configure(CONFIG);227  assert_equals(decoder.state, 'configured', 'state');228}, 'Test configure()');229promise_test(async t => {230  const callbacks = {};231  const decoder = createVideoDecoder(t, callbacks);232  decoder.configure(CONFIG);233  decoder.decode(CHUNKS[0]);234  let outputs = 0;235  callbacks.output = frame => {236    outputs++;237    assert_equals(frame.timestamp, CHUNKS[0].timestamp, 'timestamp');238    frame.close();239  };240  await decoder.flush();241  assert_equals(outputs, 1, 'outputs');242}, 'Decode a key frame');243promise_test(async t => {244  const callbacks = {};245  const decoder = createVideoDecoder(t, callbacks);246  decoder.configure(CONFIG);247  // Ensure type value is verified.248  assert_equals(CHUNKS[1].type, 'delta');249  assert_throws_dom('DataError', () => decoder.decode(CHUNKS[1], 'decode'));250}, 'Decode a non key frame first fails');251promise_test(async t => {252  const callbacks = {};253  const decoder = createVideoDecoder(t, callbacks);254  decoder.configure(CONFIG);255  for (let i = 0; i < 16; i++) {256    decoder.decode(new EncodedVideoChunk(257        {type: 'key', timestamp: 0, data: CHUNK_DATA[0]}));258  }259  assert_greater_than(decoder.decodeQueueSize, 0);260  // Wait for the first output, then reset the decoder.261  let outputs = 0;262  await new Promise(resolve => {263    callbacks.output = frame => {264      outputs++;265      assert_equals(outputs, 1, 'outputs');266      assert_equals(frame.timestamp, 0, 'timestamp');267      frame.close();268      decoder.reset();269      assert_equals(decoder.decodeQueueSize, 0, 'decodeQueueSize');270      resolve();271    };272  });273  decoder.configure(CONFIG);274  for (let i = 0; i < 4; i++) {275    decoder.decode(new EncodedVideoChunk(276        {type: 'key', timestamp: 1, data: CHUNK_DATA[0]}));277  }278  // Expect future outputs to come from after the reset.279  callbacks.output = frame => {280    outputs++;281    assert_equals(frame.timestamp, 1, 'timestamp');282    frame.close();283  };284  await decoder.flush();285  assert_equals(outputs, 5);286  assert_equals(decoder.decodeQueueSize, 0);287}, 'Verify reset() suppresses outputs');288promise_test(async t => {289  const decoder = createVideoDecoder(t);290  assert_equals(decoder.state, 'unconfigured');291  decoder.reset();292  assert_equals(decoder.state, 'unconfigured');293  assert_throws_dom(294      'InvalidStateError', () => decoder.decode(CHUNKS[0]), 'decode');295  await promise_rejects_dom(t, 'InvalidStateError', decoder.flush(), 'flush');296}, 'Test unconfigured VideoDecoder operations');297promise_test(async t => {298  const decoder = createVideoDecoder(t);299  decoder.close();300  assert_equals(decoder.state, 'closed');301  assert_throws_dom(302      'InvalidStateError', () => decoder.configure(CONFIG), 'configure');303  assert_throws_dom('InvalidStateError', () => decoder.reset(), 'reset');304  assert_throws_dom('InvalidStateError', () => decoder.close(), 'close');305  assert_throws_dom(306      'InvalidStateError', () => decoder.decode(CHUNKS[0]), 'decode');307  await promise_rejects_dom(t, 'InvalidStateError', decoder.flush(), 'flush');308}, 'Test closed VideoDecoder operations');309promise_test(async t => {310  const callbacks = {};311  let errors = 0;312  callbacks.error = e => errors++;313  const decoder = createVideoDecoder(t, callbacks);314  decoder.configure(CONFIG);315  decoder.decode(CHUNKS[0]);  // Decode keyframe first.316  decoder.decode(new EncodedVideoChunk(317      {type: 'key', timestamp: 1, data: new ArrayBuffer(0)}));318  await promise_rejects_dom(t, 'AbortError', decoder.flush());319  assert_equals(errors, 1, 'errors');320  assert_equals(decoder.state, 'closed', 'state');321}, 'Decode empty frame');322promise_test(async t => {323  const callbacks = {};324  let errors = 0;325  callbacks.error = e => errors++;326  let outputs = 0;327  callbacks.output = frame => {328    outputs++;329    frame.close();330  };331  const decoder = createVideoDecoder(t, callbacks);332  decoder.configure(CONFIG);333  decoder.decode(CHUNKS[0]);  // Decode keyframe first.334  decoder.decode(createCorruptChunk(2));335  await promise_rejects_dom(t, 'AbortError', decoder.flush());336  assert_less_than_equal(outputs, 1);337  assert_equals(errors, 1, 'errors');338  assert_equals(decoder.state, 'closed', 'state');339}, 'Decode corrupt frame');340promise_test(async t => {341  const decoder = createVideoDecoder(t);342  decoder.configure(CONFIG);343  decoder.decode(CHUNKS[0]);  // Decode keyframe first.344  decoder.decode(createCorruptChunk(1));345  let flushDone = decoder.flush();346  decoder.close();347  // Flush should have been synchronously rejected, with no output() or error()348  // callbacks.349  await promise_rejects_dom(t, 'AbortError', flushDone);350}, 'Close while decoding corrupt frame');351promise_test(async t => {352  const callbacks = {};353  const decoder = createVideoDecoder(t, callbacks);354  decoder.configure(CONFIG);355  decoder.decode(CHUNKS[0]);356  let outputs = 0;357  callbacks.output = frame => {358    outputs++;359    frame.close();360  };361  await decoder.flush();362  assert_equals(outputs, 1, 'outputs');363  decoder.decode(CHUNKS[0]);364  await decoder.flush();365  assert_equals(outputs, 2, 'outputs');366}, 'Test decoding after flush');367promise_test(async t => {368  const callbacks = {};369  const decoder = createVideoDecoder(t, callbacks);370  decoder.configure(CONFIG);371  decoder.decode(new EncodedVideoChunk(372      {type: 'key', timestamp: -42, data: CHUNK_DATA[0]}));373  let outputs = 0;374  callbacks.output = frame => {375    outputs++;376    assert_equals(frame.timestamp, -42, 'timestamp');377    frame.close();378  };379  await decoder.flush();380  assert_equals(outputs, 1, 'outputs');381}, 'Test decoding a with negative timestamp');382promise_test(async t => {383  const callbacks = {};384  const decoder = createVideoDecoder(t, callbacks);385  decoder.configure(CONFIG);386  decoder.decode(CHUNKS[0]);387  decoder.decode(CHUNKS[1]);388  const flushDone = decoder.flush();389  // Wait for the first output, then reset.390  let outputs = 0;391  await new Promise(resolve => {392    callbacks.output = frame => {393      outputs++;394      assert_equals(outputs, 1, 'outputs');395      decoder.reset();396      frame.close();397      resolve();398    };399  });400  // Flush should have been synchronously rejected.401  await promise_rejects_dom(t, 'AbortError', flushDone);402  assert_equals(outputs, 1, 'outputs');403}, 'Test reset during flush');404promise_test(async t => {405  const callbacks = {};406  const decoder = createVideoDecoder(t, callbacks);407  decoder.configure({...CONFIG, optimizeForLatency: true});408  decoder.decode(CHUNKS[0]);409  // The frame should be output without flushing.410  await new Promise(resolve => {411    callbacks.output = frame => {412      frame.close();413      resolve();414    };415  });...

Using AI Code Generation

1function createVideoDecoder() {2  let decoder = new VideoDecoder({3    output: (frame, metadata) => {4      console.log(frame);5    }6  });7  return decoder;8}9function createVideoEncoder() {10  let encoder = new VideoEncoder({11    output: (chunk, metadata) => {12      console.log(chunk);13    }14  });15  return encoder;16}17function createImageBitmap() {18  let img = new Image();19  img.src = 'test.png';20  img.onload = () => {21    let bitmap = createImageBitmap(img);22    console.log(bitmap);23  };24}25async function createImageBitmap() {26  let img = new Image();27  img.src = 'test.png';28  img.onload = async () => {29    let bitmap = await createImageBitmap(img);30    console.log(bitmap);31  };32}33function createImageBitmap() {34  let img = new Image();35  img.src = 'test.png';36  img.onload = () => {37    let bitmap = createImageBitmap(img, 0, 0, 100, 100);38    console.log(bitmap);39  };40}41async function createImageBitmap() {42  let img = new Image();43  img.src = 'test.png';44  img.onload = async () => {45    let bitmap = await createImageBitmap(img, 0, 0, 100, 100);46    console.log(bitmap);47  };48}49function createImageBitmap() {50  let img = new Image();51  img.src = 'test.png';52  img.onload = () => {53    let bitmap = createImageBitmap(img, 0, 0, 100, 100, {resizeWidth: 100, resizeHeight: 100});54    console.log(bitmap);55  };56}57async function createImageBitmap() {58  let img = new Image();59  img.src = 'test.png';60  img.onload = async () => {61    let bitmap = await createImageBitmap(img, 0, 0, 100, 100, {resizeWidth: 100

Using AI Code Generation

1var videoDecoder = createVideoDecoder();2videoDecoder.configure({codec: "vp9"});3videoDecoder.decode();4var videoEncoder = createVideoEncoder();5videoEncoder.configure({codec: "vp9"});6videoEncoder.encode();7var videoFrame = createVideoFrame();8videoFrame.close();9var videoFrameBuffer = createVideoFrameBuffer();10videoFrameBuffer.close();11var videoTrackReader = createVideoTrackReader();12videoTrackReader.read();13var videoTrackWriter = createVideoTrackWriter();14videoTrackWriter.write();15var videoTrack = createVideoTrackFromStream();16videoTrack.stop();17var audioTrack = createAudioTrackFromStream();18audioTrack.stop();19var videoTrack = createVideoTrackFromMediaStreamTrack();20videoTrack.stop();21var audioTrack = createAudioTrackFromMediaStreamTrack();22audioTrack.stop();23var videoTrack = createVideoTrackFromMediaStreamTrack();24videoTrack.stop();25var audioTrack = createAudioTrackFromMediaStreamTrack();26audioTrack.stop();27var audioWorkletNode = createAudioWorkletNode();28audioWorkletNode.port.close();29var audioWorkletProcessor = createAudioWorkletProcessor();30audioWorkletProcessor.port.close();31var mediaStreamAudioSourceNode = createMediaStreamAudioSourceNode();32mediaStreamAudioSourceNode.stop();33var mediaStreamAudioDestinationNode = createMediaStreamAudioDestinationNode();

Using AI Code Generation

1var decoder = createVideoDecoder({codec: "vp8"});2decoder.configure({codec: "vp8", codedWidth: 1920, codedHeight: 1080, alpha: false});3decoder.flush();4decoder.close();5decoder = null;6I have also tried to run the same code in the chromium browser but it is giving me error as "Uncaught (in promise) DOMException: Failed to execute 'configure' on 'VideoDecoder': The VideoDecoder is not in a state that supports configuration."

Using AI Code Generation

1var video = document.createElement('video');2var videoDecoder = await createVideoDecoder({codec: 'h264'});3var config = {codec: 'h264', codedWidth: 320, codedHeight: 240, displayWidth: 320, displayHeight: 240};4var input = new VideoDecoderInput({config: config});5var output = new VideoDecoderOutput();6var decodePromise = videoDecoder.decode(input, output);7var chunk = {type: 'key', timestamp: 0, data: new Uint8Array()};8await decodePromise;9await videoDecoder.flush(output);10await videoDecoder.close();11function testCreateVideoDecoder(t, testFunction) {12  promise_test(async (t) => {13    const video = document.createElement('video');14    const videoDecoder = await createVideoDecoder({codec: 'h264'});15    const config = {codec: 'h264', codedWidth: 320, codedHeight: 240, displayWidth: 320, displayHeight: 240};16    const input = new VideoDecoderInput({config: config});17    const output = new VideoDecoderOutput();18    await testFunction(t, video, videoDecoder, input, output);19  }, 'Test createVideoDecoder');20}21function createVideoDecoder(config) {22  return new Promise((resolve, reject) => {23    const videoDecoder = new VideoDecoder(config);24    videoDecoder.onerror = reject;25    videoDecoder.onunhandledrejection = reject;26    videoDecoder.onmessage = () => {27      resolve(videoDecoder);28    };29  });30}31class VideoDecoder {32  constructor(config) {33    this._config = config;34    this._input = null;35    this._output = null;36    this._pendingInput = null;37    this._pendingOutput = null;38    this._messageHandler = null;39    this._unhandledRejectionHandler = null;40    this._errorHandler = null;41    this._isClosed = false;42    this._isFlushing = false;43    this._isDecoding = false;44    this._isFinished = false;45  }

Using AI Code Generation

1var videoDecoder = new VideoDecoder({2  output: (frame, metadata) => {3  },4  error: (error) => {5  }6});7videoDecoder.configure({8}).then(() => {9  videoDecoder.decode({ buffer: frameBuffer });10});11var videoEncoder = new VideoEncoder({12  output: (encodedFrame, metadata) => {13  },14  error: (error) => {15  }16});17videoEncoder.configure({18}).then(() => {19  videoEncoder.encode({ input: frame });20});21const image = await createImageBitmap(imageBitmapSource);22const image = await createImageBitmap(imageBitmapSource, sx, sy, sw, sh, options);23const image = await createImageBitmap(imageBitmapSource, options);24const image = await createImageBitmap(blob);25const image = await createImageBitmap(imageBitmap);26const image = await createImageBitmap(offscreenCanvas);

Using AI Code Generation

1var decoder = createVideoDecoder();2decoder.configure({codec: 'vp8'});3decoder.decode({input: new Uint8Array([0, 1, 2])});4decoder.flush();5decoder.close();6decoder.reset();7var decoder = createVideoDecoder();8decoder.configure({codec: 'vp9'});9decoder.decode({input: new Uint8Array([0, 1, 2])});10decoder.flush();11decoder.close();12decoder.reset();13var decoder = createVideoDecoder();14decoder.configure({codec: 'h264'});15decoder.decode({input: new Uint8Array([0, 1, 2])});16decoder.flush();17decoder.close();18decoder.reset();19var decoder = createVideoDecoder();20decoder.configure({codec: 'av1'});21decoder.decode({input: new Uint8Array([0, 1, 2])});22decoder.flush();23decoder.close();24decoder.reset();25var decoder = createVideoDecoder();26decoder.configure({codec: 'vp8'});27decoder.decode({input: new Uint8Array([0, 1, 2])});28decoder.flush();29decoder.close();30decoder.reset();31var decoder = createVideoDecoder();32decoder.configure({codec: 'vp9'});33decoder.decode({input: new Uint8Array([0, 1, 2])});34decoder.flush();35decoder.close();36decoder.reset();37var decoder = createVideoDecoder();38decoder.configure({codec: 'h264'});39decoder.decode({input: new Uint8Array([0, 1, 2])});40decoder.flush();41decoder.close();42decoder.reset();43var decoder = createVideoDecoder();44decoder.configure({codec: 'av1'});45decoder.decode({input: new Uint8Array([0, 1, 2])});46decoder.flush();47decoder.close();48decoder.reset();

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