55 lines
2 KiB
HTML
55 lines
2 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<title>SpeechRecognition MediaStreamTrack</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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async function getAudioTrackFromFile(filePath) {
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const audioContext = new AudioContext();
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const response = await fetch(filePath);
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const arrayBuffer = await response.arrayBuffer();
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const audioBuffer = await audioContext.decodeAudioData(arrayBuffer);
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const source = audioContext.createBufferSource();
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source.buffer = audioBuffer;
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const destination = audioContext.createMediaStreamDestination();
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source.connect(destination);
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source.start();
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return destination.stream.getAudioTracks()[0];
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}
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promise_test(async (t) => {
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const lang = "en-US";
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window.SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
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const speechRecognition = new SpeechRecognition();
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speechRecognition.mode = 'cloud-only';
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speechRecognition.lang = lang;
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const audioTrack = await getAudioTrackFromFile("/media/speech.wav");
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assert_true(audioTrack instanceof MediaStreamTrack, "Audio track should be a valid MediaStreamTrack");
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const recognitionPromise = new Promise((resolve) => {
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speechRecognition.onresult = (event) => {
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const transcript = event.results[0][0].transcript;
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resolve(transcript);
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};
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});
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speechRecognition.start(audioTrack);
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const transcript = await recognitionPromise;
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assert_equals(transcript.toLowerCase(), "this is a sentence in a single segment", "Speech recognition should correctly recognize 'hello world'");
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// Start speech recognition without a media stream track on the same instance should fail.
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try {
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speechRecognition.start();
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assert_unreached();
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} catch (e) {
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assert_equals(e.name, "InvalidStateError", "Second call to start() should throw an InvalidStateError");
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}
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}, "SpeechRecognition should recognize speech from an audio file.");
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</script>
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</html>
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