1 line
2.6 KiB
JavaScript
1 line
2.6 KiB
JavaScript
(()=>{"use strict";var e={710:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.log=t.LOG_PREFIX=void 0,t.LOG_PREFIX="[VAD]";const s=["error","debug","warn"].reduce(((e,s)=>(e[s]=function(e){return(...s)=>{console[e](t.LOG_PREFIX,...s)}}(s),e)),{});t.log=s},954:(e,t)=>{var s;Object.defineProperty(t,"__esModule",{value:!0}),t.Message=void 0,function(e){e.AudioFrame="AUDIO_FRAME",e.SpeechStart="SPEECH_START",e.VADMisfire="VAD_MISFIRE",e.SpeechEnd="SPEECH_END",e.SpeechStop="SPEECH_STOP",e.SpeechRealStart="SPEECH_REAL_START",e.FrameProcessed="FRAME_PROCESSED"}(s||(t.Message=s={}))},825:(e,t,s)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.Resampler=void 0;const r=s(710);t.Resampler=class{constructor(e){this.options=e,this.process=e=>{const t=[];for(const s of e)for(this.inputBuffer.push(s);this.hasEnoughDataForFrame();){const e=this.generateOutputFrame();t.push(e)}return t},e.nativeSampleRate<16e3&&r.log.error("nativeSampleRate is too low. Should have 16000 = targetSampleRate <= nativeSampleRate"),this.inputBuffer=[]}async*stream(e){for(const t of e)for(this.inputBuffer.push(t);this.hasEnoughDataForFrame();){const e=this.generateOutputFrame();yield e}}hasEnoughDataForFrame(){return this.inputBuffer.length*this.options.targetSampleRate/this.options.nativeSampleRate>=this.options.targetFrameSize}generateOutputFrame(){const e=new Float32Array(this.options.targetFrameSize);let t=0,s=0;for(;t<this.options.targetFrameSize;){let r=0,i=0;for(;s<Math.min(this.inputBuffer.length,(t+1)*this.options.nativeSampleRate/this.options.targetSampleRate);){const e=this.inputBuffer[s];void 0!==e&&(r+=e,i++),s++}e[t]=r/i,t++}return this.inputBuffer=this.inputBuffer.slice(s),e}}}},t={};function s(r){var i=t[r];if(void 0!==i)return i.exports;var o=t[r]={exports:{}};return e[r](o,o.exports,s),o.exports}(()=>{const e=s(710),t=s(954),r=s(825);class i extends AudioWorkletProcessor{constructor(s){super(),this._initialized=!1,this._stopProcessing=!1,this.init=async()=>{e.log.debug("initializing worklet"),this.resampler=new r.Resampler({nativeSampleRate:sampleRate,targetSampleRate:16e3,targetFrameSize:this.options.frameSamples}),this._initialized=!0,e.log.debug("initialized worklet")},this.options=s.processorOptions,this.port.onmessage=e=>{e.data.message===t.Message.SpeechStop&&(this._stopProcessing=!0)},this.init()}process(e,s,r){if(this._stopProcessing)return!1;const i=e[0][0];if(this._initialized&&i instanceof Float32Array){const e=this.resampler.process(i);for(const s of e)this.port.postMessage({message:t.Message.AudioFrame,data:s.buffer},[s.buffer])}return!0}}registerProcessor("vad-helper-worklet",i)})()})(); |