Created
September 16, 2022 17:08
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/** | |
* Receives streaming data and writes it to the recognizeStream for transcription | |
* | |
* @param {Buffer} data A section of audio data | |
*/ | |
receiveData(data: DataView) { | |
if ( | |
this.newStream && | |
this.lastAudioInput.length !== 0 && | |
this.recognizeStream | |
) { | |
// Approximate math to calculate time of chunks | |
const chunkTime = this.streamingLimit / this.lastAudioInput.length; | |
if (chunkTime !== 0) { | |
if (this.bridgingOffset < 0) { | |
this.bridgingOffset = 0; | |
} | |
if (this.bridgingOffset > this.finalRequestEndTime) { | |
this.bridgingOffset = this.finalRequestEndTime; | |
} | |
const chunksFromMS = Math.floor( | |
(this.finalRequestEndTime - this.bridgingOffset) / chunkTime | |
); | |
this.bridgingOffset = Math.floor( | |
(this.lastAudioInput.length - chunksFromMS) * chunkTime | |
); | |
for (let i = chunksFromMS; i < this.lastAudioInput.length; i++) { | |
this.recognizeStream.write(this.lastAudioInput[i]); | |
} | |
} | |
this.newStream = false; | |
} | |
this.audioInput.push(data); | |
if (this.recognizeStream) { | |
this.recognizeStream.write(data); | |
} | |
} |
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