| <!DOCTYPE html> |
| <html lang="en"> |
| <title>SpeechRecognition Concurrent MediaStreamTracks</title> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <script> |
| async function getAudioTrackFromFile(filePath) { |
| const audioContext = new AudioContext(); |
| const response = await fetch(filePath); |
| const arrayBuffer = await response.arrayBuffer(); |
| const audioBuffer = await audioContext.decodeAudioData(arrayBuffer); |
| const source = audioContext.createBufferSource(); |
| source.buffer = audioBuffer; |
| |
| const destination = audioContext.createMediaStreamDestination(); |
| source.connect(destination); |
| source.start(); |
| |
| return destination.stream.getAudioTracks()[0]; |
| } |
| |
| promise_test(async (t) => { |
| const lang = "en-US"; |
| window.SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition; |
| |
| // Create two SpeechRecognition instances |
| const speechRecognition1 = new SpeechRecognition(); |
| speechRecognition1.processLocally = false; |
| speechRecognition1.lang = lang; |
| const speechRecognition2 = new SpeechRecognition(); |
| speechRecognition2.processLocally = false; |
| speechRecognition2.lang = lang; |
| |
| const audioTrack1 = await getAudioTrackFromFile("/media/speech.wav"); |
| const audioTrack2 = await getAudioTrackFromFile("/media/speech.wav"); |
| |
| assert_true(audioTrack1 instanceof MediaStreamTrack, "Audio track 1 should be a valid MediaStreamTrack"); |
| assert_true(audioTrack2 instanceof MediaStreamTrack, "Audio track 2 should be a valid MediaStreamTrack"); |
| |
| const recognitionPromise1 = new Promise((resolve) => { |
| speechRecognition1.onresult = (event) => { |
| const transcript = event.results[0][0].transcript; |
| resolve(transcript); |
| }; |
| }); |
| |
| const recognitionPromise2 = new Promise((resolve) => { |
| speechRecognition2.onresult = (event) => { |
| const transcript = event.results[0][0].transcript; |
| resolve(transcript); |
| }; |
| }); |
| |
| speechRecognition1.start(audioTrack1); |
| speechRecognition2.start(audioTrack2); |
| |
| const transcript1 = await recognitionPromise1; |
| const transcript2 = await recognitionPromise2; |
| |
| assert_equals(transcript1.toLowerCase(), "this is a sentence in a single segment", "Speech recognition 1 should correctly recognize speech"); |
| assert_equals(transcript2.toLowerCase(), "this is a sentence in a single segment", "Speech recognition 2 should correctly recognize speech"); |
| }, "Two SpeechRecognition instances should simultaneously recognize speech from audio files."); |
| </script> |
| </html> |
