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@speechly/browser-client
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@speechly/browser-client - npm Package Compare versions
Comparing version 2.0.1 to 2.1.0-beta.0
@@ -1,4 +0,4 @@ | ||
| !function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).Speechly={})}(this,(function(t){"use strict";const e=new Error("Current device does not support microphone API"),n=new Error("AppId changed without project login"),i=16e3;class s{constructor(t,e){this.isFinalized=!1,this.words=[],this.entities=new Map,this.intent={intent:"",isFinal:!1},this.contextId=t,this.id=e}toSegment(){let t=0;const e=new Array(this.entities.size);return this.entities.forEach((n=>{e[t]=n,t++})),{id:this.id,contextId:this.contextId,isFinal:this.isFinalized,words:this.words,entities:e,intent:this.intent}}toString(){const t=this.toSegment(),e=t.words.filter((t=>t.value)).map((t=>({value:t.value,index:t.index}))),n=Object.assign(Object.assign({},t),{words:e});return JSON.stringify(n,null,2)}updateTranscript(t){return t.forEach((t=>{this.isFinalized&&!t.isFinal||(this.words[t.index]=t)})),this}updateEntities(t){return t.forEach((t=>{this.isFinalized&&!t.isFinal||this.entities.set(function(t){return`${t.startPosition.toString()}:${t.endPosition.toString()}`}(t),t)})),this}updateIntent(t){return this.isFinalized&&!t.isFinal||(this.intent=t),this}finalize(){return this.entities.forEach(((t,e)=>{t.isFinal||this.entities.delete(e)})),this.words=this.words.filter((t=>t.isFinal)),this.intent.isFinal||(this.intent.intent="",this.intent.isFinal=!0),this.isFinalized=!0,this}}function o(t,e,n,i){return new(n||(n=Promise))((function(s,o){function r(t){try{c(i.next(t))}catch(t){o(t)}}function a(t){try{c(i.throw(t))}catch(t){o(t)}}function c(t){var e;t.done?s(t.value):(e=t.value,e instanceof n?e:new n((function(t){t(e)}))).then(r,a)}c((i=i.apply(t,e||[])).next())}))}const r=new Error("Microphone is not initialized"),a=new Error("Microphone is already initialized"),c=new Error("Microphone consent is not given");var d;t.WebsocketResponseType=void 0,(d=t.WebsocketResponseType||(t.WebsocketResponseType={})).Opened="WEBSOCKET_OPEN",d.Closed="WEBSOCKET_CLOSED",d.SourceSampleRateSetSuccess="SOURCE_SAMPLE_RATE_SET_SUCCESS",d.Started="started",d.Stopped="stopped",d.SegmentEnd="segment_end",d.Transcript="transcript",d.Entity="entity",d.Intent="intent",d.TentativeTranscript="tentative_transcript",d.TentativeEntities="tentative_entities",d.TentativeIntent="tentative_intent";const l=new Error("Current device does not support storage API"),h=new Error("Requested key was not present in storage");var u;t.DecoderState=void 0,(u=t.DecoderState||(t.DecoderState={}))[u.Failed=0]="Failed",u[u.Disconnected=1]="Disconnected",u[u.Connected=2]="Connected",u[u.Active=3]="Active";class p{constructor(){this.stateChangeCbs=[],this.transcriptCbs=[],this.entityCbs=[],this.intentCbs=[],this.segmentChangeCbs=[],this.tentativeTranscriptCbs=[],this.tentativeEntityCbs=[],this.tentativeIntentCbs=[],this.contextStartedCbs=[],this.contextStoppedCbs=[]}}function f(t){var e;return null!==(e=S.get(t))&&void 0!==e?e:"unknown"}const S=new Map([[t.DecoderState.Failed,"Failed"],[t.DecoderState.Disconnected,"Disconnected"],[t.DecoderState.Connected,"Connected"],[t.DecoderState.Active,"Active"]]);var v,b=new Uint8Array(16);function C(){if(!v&&!(v="undefined"!=typeof crypto&&crypto.getRandomValues&&crypto.getRandomValues.bind(crypto)||"undefined"!=typeof msCrypto&&"function"==typeof msCrypto.getRandomValues&&msCrypto.getRandomValues.bind(msCrypto)))throw new Error("crypto.getRandomValues() not supported. See https://github.com/uuidjs/uuid#getrandomvalues-not-supported");return v(b)}var g=/^(?:[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}|00000000-0000-0000-0000-000000000000)$/i;function m(t){return"string"==typeof t&&g.test(t)}for(var w=[],y=0;y<256;++y)w.push((y+256).toString(16).substr(1));function k(t,e,n){var i=(t=t||{}).random||(t.rng||C)();if(i[6]=15&i[6]|64,i[8]=63&i[8]|128,e){n=n||0;for(var s=0;s<16;++s)e[n+s]=i[s];return e}return function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:0,n=(w[t[e+0]]+w[t[e+1]]+w[t[e+2]]+w[t[e+3]]+"-"+w[t[e+4]]+w[t[e+5]]+"-"+w[t[e+6]]+w[t[e+7]]+"-"+w[t[e+8]]+w[t[e+9]]+"-"+w[t[e+10]]+w[t[e+11]]+w[t[e+12]]+w[t[e+13]]+w[t[e+14]]+w[t[e+15]]).toLowerCase();if(!m(n))throw TypeError("Stringified UUID is invalid");return n}(i)}var E="undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:{},A={exports:{}}; | ||
| !function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).Speechly={})}(this,(function(t){"use strict";const e=new Error("Current device does not support microphone API"),i=new Error("AppId changed without project login"),n=16e3;class s{constructor(t,e){this.isFinalized=!1,this.words=[],this.entities=new Map,this.intent={intent:"",isFinal:!1},this.contextId=t,this.id=e}toSegment(){let t=0;const e=new Array(this.entities.size);return this.entities.forEach((i=>{e[t]=i,t++})),{id:this.id,contextId:this.contextId,isFinal:this.isFinalized,words:this.words,entities:e,intent:this.intent}}toString(){const t=this.toSegment(),e=t.words.filter((t=>t.value)).map((t=>({value:t.value,index:t.index}))),i=Object.assign(Object.assign({},t),{words:e});return JSON.stringify(i,null,2)}updateTranscript(t){return t.forEach((t=>{this.isFinalized&&!t.isFinal||(this.words[t.index]=t)})),this}updateEntities(t){return t.forEach((t=>{this.isFinalized&&!t.isFinal||this.entities.set(function(t){return`${t.startPosition.toString()}:${t.endPosition.toString()}`}(t),t)})),this}updateIntent(t){return this.isFinalized&&!t.isFinal||(this.intent=t),this}finalize(){return this.entities.forEach(((t,e)=>{t.isFinal||this.entities.delete(e)})),this.words=this.words.filter((t=>t.isFinal)),this.intent.isFinal||(this.intent.intent="",this.intent.isFinal=!0),this.isFinalized=!0,this}}function o(t,e,i,n){return new(i||(i=Promise))((function(s,o){function a(t){try{c(n.next(t))}catch(t){o(t)}}function d(t){try{c(n.throw(t))}catch(t){o(t)}}function c(t){var e;t.done?s(t.value):(e=t.value,e instanceof i?e:new i((function(t){t(e)}))).then(a,d)}c((n=n.apply(t,e||[])).next())}))}const a=new Error("Microphone is not initialized"),d=new Error("Microphone is already initialized"),c=new Error("Microphone consent is not given");var l,r,h;t.WebsocketResponseType=void 0,(l=t.WebsocketResponseType||(t.WebsocketResponseType={})).Started="started",l.Stopped="stopped",l.SegmentEnd="segment_end",l.Transcript="transcript",l.Entity="entity",l.Intent="intent",l.TentativeTranscript="tentative_transcript",l.TentativeEntities="tentative_entities",l.TentativeIntent="tentative_intent",t.WorkerSignal=void 0,(r=t.WorkerSignal||(t.WorkerSignal={})).Opened="WEBSOCKET_OPEN",r.Closed="WEBSOCKET_CLOSED",r.AudioProcessorReady="SOURCE_SAMPLE_RATE_SET_SUCCESS",r.VadSignalHigh="VadSignalHigh",r.VadSignalLow="VadSignalLow",t.ControllerSignal=void 0,(h=t.ControllerSignal||(t.ControllerSignal={})).connect="connect",h.initAudioProcessor="initAudioProcessor",h.adjustAudioProcessor="adjustAudioProcessor",h.SET_SHARED_ARRAY_BUFFERS="SET_SHARED_ARRAY_BUFFERS",h.CLOSE="CLOSE",h.START_CONTEXT="START_CONTEXT",h.SWITCH_CONTEXT="SWITCH_CONTEXT",h.STOP_CONTEXT="STOP_CONTEXT",h.AUDIO="AUDIO",h.startStream="startStream",h.stopStream="stopStream";const u=new Error("Current device does not support storage API"),p=new Error("Requested key was not present in storage"),b={enabled:!1,controlListening:!0,signalToNoiseDb:3,noiseGateDb:-24,noiseLearnHalftimeMillis:400,signalSearchFrames:5,signalActivation:.7,signalRelease:.2,signalSustainMillis:3e3};var m;t.DecoderState=void 0,(m=t.DecoderState||(t.DecoderState={}))[m.Failed=0]="Failed",m[m.Disconnected=1]="Disconnected",m[m.Connected=2]="Connected",m[m.Active=3]="Active";class Z{constructor(){this.stateChangeCbs=[],this.transcriptCbs=[],this.entityCbs=[],this.intentCbs=[],this.segmentChangeCbs=[],this.tentativeTranscriptCbs=[],this.tentativeEntityCbs=[],this.tentativeIntentCbs=[],this.contextStartedCbs=[],this.contextStoppedCbs=[],this.onVadStateChange=[]}}function y(t){var e;return null!==(e=G.get(t))&&void 0!==e?e:"unknown"}const G=new Map([[t.DecoderState.Failed,"Failed"],[t.DecoderState.Disconnected,"Disconnected"],[t.DecoderState.Connected,"Connected"],[t.DecoderState.Active,"Active"]]);var v,W=new Uint8Array(16);function X(){if(!v&&!(v="undefined"!=typeof crypto&&crypto.getRandomValues&&crypto.getRandomValues.bind(crypto)||"undefined"!=typeof msCrypto&&"function"==typeof msCrypto.getRandomValues&&msCrypto.getRandomValues.bind(msCrypto)))throw new Error("crypto.getRandomValues() not supported. 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| /*! http://mths.be/base64 v0.1.0 by @mathias | MIT license */ | ||
| !function(t,e){!function(n){var i=e,s=t&&t.exports==i&&t,o="object"==typeof E&&E;o.global!==o&&o.window!==o||(n=o);var r=function(t){this.message=t};(r.prototype=new Error).name="InvalidCharacterError";var a=function(t){throw new r(t)},c="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",d=/[\t\n\f\r ]/g,l={encode:function(t){t=String(t),/[^\0-\xFF]/.test(t)&&a("The string to be encoded contains characters outside of the Latin1 range.");for(var e,n,i,s,o=t.length%3,r="",d=-1,l=t.length-o;++d<l;)e=t.charCodeAt(d)<<16,n=t.charCodeAt(++d)<<8,i=t.charCodeAt(++d),r+=c.charAt((s=e+n+i)>>18&63)+c.charAt(s>>12&63)+c.charAt(s>>6&63)+c.charAt(63&s);return 2==o?(e=t.charCodeAt(d)<<8,n=t.charCodeAt(++d),r+=c.charAt((s=e+n)>>10)+c.charAt(s>>4&63)+c.charAt(s<<2&63)+"="):1==o&&(s=t.charCodeAt(d),r+=c.charAt(s>>2)+c.charAt(s<<4&63)+"=="),r},decode:function(t){var e=(t=String(t).replace(d,"")).length;e%4==0&&(e=(t=t.replace(/==?$/,"")).length),(e%4==1||/[^+a-zA-Z0-9/]/.test(t))&&a("Invalid character: the string to be decoded is not correctly encoded.");for(var n,i,s=0,o="",r=-1;++r<e;)i=c.indexOf(t.charAt(r)),n=s%4?64*n+i:i,s++%4&&(o+=String.fromCharCode(255&n>>(-2*s&6)));return o},version:"0.1.0"};if(i&&!i.nodeType)if(s)s.exports=l;else for(var h in l)l.hasOwnProperty(h)&&(i[h]=l[h]);else n.base64=l}(E)}(A,A.exports);function R(t,e,n,i,s=Date.now){const o=function(t){const e=t.split(".")[1];let n;try{n=JSON.parse(A.exports.decode(e))}catch(t){throw new Error("Error decoding Speechly token!")}return{appId:n.appId,projectId:n.projectId,deviceId:n.deviceId,configId:n.configId,scopes:n.scope.split(" "),issuer:n.iss,audience:n.aud,expiresAtMs:1e3*n.exp}}(t);return!(o.expiresAtMs-s()<36e5)&&(o.appId===n&&o.projectId===e&&o.deviceId===i)}class x{constructor(){this.startCbs=[],this.stopCbs=[],this.onResponseCb=()=>{},this.onCloseCb=()=>{},this.onWebsocketMessage=e=>{const n=e.data;switch(n.type){case t.WebsocketResponseType.Opened:null!=this.resolveInitialization&&this.resolveInitialization();break;case t.WebsocketResponseType.Closed:this.onCloseCb({code:e.data.code,reason:e.data.reason,wasClean:e.data.wasClean});break;case t.WebsocketResponseType.SourceSampleRateSetSuccess:null!=this.resolveSourceSampleRateSet&&this.resolveSourceSampleRateSet();break;case t.WebsocketResponseType.Started:this.startCbs.forEach((t=>{try{t(void 0,n.audio_context)}catch(t){console.error('[SpeechlyClient] Error while invoking "onStart" callback:',t)}})),this.startCbs.length=0;break;case t.WebsocketResponseType.Stopped:this.stopCbs.forEach((t=>{try{t(void 0,n.audio_context)}catch(t){console.error('[SpeechlyClient] Error while invoking "onStop" callback:',t)}})),this.stopCbs.length=0;break;default:this.onResponseCb(n)}};const e=new Blob(["/**\n * Known WebSocket response types.\n * @public\n */\nvar WebsocketResponseType;\n(function (WebsocketResponseType) {\n WebsocketResponseType[\"Opened\"] = \"WEBSOCKET_OPEN\";\n WebsocketResponseType[\"SourceSampleRateSetSuccess\"] = \"SOURCE_SAMPLE_RATE_SET_SUCCESS\";\n WebsocketResponseType[\"Started\"] = \"started\";\n WebsocketResponseType[\"Stopped\"] = \"stopped\";\n})(WebsocketResponseType || (WebsocketResponseType = {}));\nvar CONTROL = {\n WRITE_INDEX: 0,\n FRAMES_AVAILABLE: 1,\n LOCK: 2\n};\nvar WebsocketClient = /** @class */ (function () {\n function WebsocketClient(ctx) {\n var _this = this;\n this.isContextStarted = false;\n this.isStartContextConfirmed = false;\n this.shouldResendLastFramesSent = false;\n this.buffer = new Float32Array(0);\n this.lastFramesSent = new Int16Array(0); // to re-send after switch context\n this.debug = false;\n this.initialized = false;\n // WebSocket's close handler, called e.g. when\n // - normal close (code 1000)\n // - network unreachable or unable to (re)connect (code 1006)\n // List of CloseEvent.code values: https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent/code\n this.onWebsocketClose = function (event) {\n if (_this.debug) {\n console.log('[WebSocketClient]', 'onWebsocketClose');\n }\n _this.websocket.removeEventListener('open', _this.onWebsocketOpen);\n _this.websocket.removeEventListener('message', _this.onWebsocketMessage);\n _this.websocket.removeEventListener('error', _this.onWebsocketError);\n _this.websocket.removeEventListener('close', _this.onWebsocketClose);\n _this.websocket = undefined;\n _this.workerCtx.postMessage({\n type: 'WEBSOCKET_CLOSED',\n code: event.code,\n reason: event.reason,\n wasClean: event.wasClean\n });\n };\n this.onWebsocketOpen = function (_event) {\n if (_this.debug) {\n console.log('[WebSocketClient]', 'websocket opened');\n }\n if (_this.isContextStarted && !_this.isStartContextConfirmed) {\n _this.send(_this.outbox);\n }\n _this.workerCtx.postMessage({ type: 'WEBSOCKET_OPEN' });\n };\n this.onWebsocketError = function (_event) {\n if (_this.debug) {\n console.log('[WebSocketClient]', 'websocket error');\n }\n };\n this.onWebsocketMessage = function (event) {\n var response;\n try {\n response = JSON.parse(event.data);\n }\n catch (e) {\n console.error('[WebSocketClient]', 'error parsing response from the server:', e);\n return;\n }\n if (response.type === WebsocketResponseType.Started) {\n _this.isStartContextConfirmed = true;\n if (_this.shouldResendLastFramesSent) {\n _this.resendLastFrames();\n _this.shouldResendLastFramesSent = false;\n }\n }\n _this.workerCtx.postMessage(response);\n };\n this.workerCtx = ctx;\n }\n WebsocketClient.prototype.init = function (apiUrl, authToken, targetSampleRate, debug) {\n this.debug = debug;\n if (this.debug) {\n console.log('[WebSocketClient]', 'initialize worker');\n }\n this.apiUrl = apiUrl;\n this.authToken = authToken;\n this.targetSampleRate = targetSampleRate;\n this.initialized = true;\n this.isContextStarted = false;\n this.connect(0);\n };\n WebsocketClient.prototype.setSourceSampleRate = function (sourceSampleRate) {\n this.sourceSampleRate = sourceSampleRate;\n this.resampleRatio = this.sourceSampleRate / this.targetSampleRate;\n if (this.debug) {\n console.log('[WebSocketClient]', 'resampleRatio', this.resampleRatio);\n }\n if (this.resampleRatio > 1) {\n this.filter = generateFilter(this.sourceSampleRate, this.targetSampleRate, 127);\n }\n this.workerCtx.postMessage({ type: 'SOURCE_SAMPLE_RATE_SET_SUCCESS' });\n if (isNaN(this.resampleRatio)) {\n throw Error(\"resampleRatio is NaN source rate is \".concat(this.sourceSampleRate, \" and target rate is \").concat(this.targetSampleRate));\n }\n };\n WebsocketClient.prototype.setSharedArrayBuffers = function (controlSAB, dataSAB) {\n this.controlSAB = new Int32Array(controlSAB);\n this.dataSAB = new Float32Array(dataSAB);\n var audioHandleInterval = this.dataSAB.length / 32; // ms\n if (this.debug) {\n console.log('[WebSocketClient]', 'Audio handle interval', audioHandleInterval, 'ms');\n }\n setInterval(this.sendAudioFromSAB.bind(this), audioHandleInterval);\n };\n WebsocketClient.prototype.connect = function (timeout) {\n if (timeout === void 0) { timeout = 1000; }\n if (this.debug) {\n console.log('[WebSocketClient]', 'connect in ', timeout / 1000, 'sec');\n }\n setTimeout(this.initializeWebsocket.bind(this), timeout);\n };\n WebsocketClient.prototype.initializeWebsocket = function () {\n if (this.debug) {\n console.log('[WebSocketClient]', 'connecting to ', this.apiUrl);\n }\n this.websocket = new WebSocket(this.apiUrl, this.authToken);\n this.websocket.addEventListener('open', this.onWebsocketOpen);\n this.websocket.addEventListener('message', this.onWebsocketMessage);\n this.websocket.addEventListener('error', this.onWebsocketError);\n this.websocket.addEventListener('close', this.onWebsocketClose);\n };\n WebsocketClient.prototype.isOpen = function () {\n return this.websocket !== undefined && this.websocket.readyState === this.websocket.OPEN;\n };\n WebsocketClient.prototype.resendLastFrames = function () {\n if (this.lastFramesSent.length > 0) {\n this.send(this.lastFramesSent);\n this.lastFramesSent = new Int16Array(0);\n }\n };\n WebsocketClient.prototype.sendAudio = function (audioChunk) {\n if (!this.isContextStarted) {\n return;\n }\n if (audioChunk.length > 0) {\n if (this.resampleRatio > 1) {\n // Downsampling\n this.send(this.downsample(audioChunk));\n }\n else {\n this.send(float32ToInt16(audioChunk));\n }\n }\n };\n WebsocketClient.prototype.sendAudioFromSAB = function () {\n if (!this.isContextStarted) {\n this.controlSAB[CONTROL.FRAMES_AVAILABLE] = 0;\n this.controlSAB[CONTROL.WRITE_INDEX] = 0;\n return;\n }\n if (this.controlSAB == undefined) {\n return;\n }\n var framesAvailable = this.controlSAB[CONTROL.FRAMES_AVAILABLE];\n var lock = this.controlSAB[CONTROL.LOCK];\n if (lock == 0 && framesAvailable > 0) {\n var data = this.dataSAB.subarray(0, framesAvailable);\n this.controlSAB[CONTROL.FRAMES_AVAILABLE] = 0;\n this.controlSAB[CONTROL.WRITE_INDEX] = 0;\n if (data.length > 0) {\n var frames_1;\n if (this.resampleRatio > 1) {\n frames_1 = this.downsample(data);\n }\n else {\n frames_1 = float32ToInt16(data);\n }\n this.send(frames_1);\n // 16000 per second, 1000 in 100 ms\n // save last 250 ms\n if (this.lastFramesSent.length > 1024 * 4) {\n this.lastFramesSent = frames_1;\n }\n else {\n var concat = new Int16Array(this.lastFramesSent.length + frames_1.length);\n concat.set(this.lastFramesSent);\n concat.set(frames_1, this.lastFramesSent.length);\n this.lastFramesSent = concat;\n }\n }\n }\n };\n WebsocketClient.prototype.startContext = function (appId) {\n if (this.isContextStarted) {\n console.error('[WebSocketClient]', \"can't start context: active context exists\");\n return;\n }\n this.isContextStarted = true;\n this.isStartContextConfirmed = false;\n if (appId !== undefined) {\n this.outbox = JSON.stringify({ event: 'start', appId: appId });\n }\n else {\n this.outbox = JSON.stringify({ event: 'start' });\n }\n this.send(this.outbox);\n };\n WebsocketClient.prototype.stopContext = function () {\n if (!this.websocket) {\n throw Error('WebSocket is undefined');\n }\n if (!this.isContextStarted) {\n console.error('[WebSocketClient]', \"can't stop context: no active context\");\n return;\n }\n this.isContextStarted = false;\n this.isStartContextConfirmed = false;\n var StopEventJSON = JSON.stringify({ event: 'stop' });\n this.send(StopEventJSON);\n };\n WebsocketClient.prototype.switchContext = function (newAppId) {\n if (!this.websocket) {\n throw Error('WebSocket is undefined');\n }\n if (!this.isContextStarted) {\n console.error('[WebSocketClient]', \"can't switch context: no active context\");\n return;\n }\n if (newAppId == undefined) {\n console.error('[WebSocketClient]', \"can't switch context: new app id is undefined\");\n return;\n }\n this.isStartContextConfirmed = false;\n var StopEventJSON = JSON.stringify({ event: 'stop' });\n this.send(StopEventJSON);\n this.shouldResendLastFramesSent = true;\n this.send(JSON.stringify({ event: 'start', appId: newAppId }));\n };\n WebsocketClient.prototype.closeWebsocket = function (websocketCode, reason) {\n if (websocketCode === void 0) { websocketCode = 1005; }\n if (reason === void 0) { reason = 'No Status Received'; }\n if (this.debug) {\n console.log('[WebSocketClient]', 'Websocket closing');\n }\n if (!this.websocket) {\n throw Error('WebSocket is undefined');\n }\n this.websocket.close(websocketCode, reason);\n };\n WebsocketClient.prototype.downsample = function (input) {\n var inputBuffer = new Float32Array(this.buffer.length + input.length);\n inputBuffer.set(this.buffer, 0);\n inputBuffer.set(input, this.buffer.length);\n var outputLength = Math.ceil((inputBuffer.length - this.filter.length) / this.resampleRatio);\n var outputBuffer = new Int16Array(outputLength);\n for (var i = 0; i < outputLength; i++) {\n var offset = Math.round(this.resampleRatio * i);\n var val = 0.0;\n for (var j = 0; j < this.filter.length; j++) {\n val += inputBuffer[offset + j] * this.filter[j];\n }\n outputBuffer[i] = val * (val < 0 ? 0x8000 : 0x7fff);\n }\n var remainingOffset = Math.round(this.resampleRatio * outputLength);\n if (remainingOffset < inputBuffer.length) {\n this.buffer = inputBuffer.subarray(remainingOffset);\n }\n else {\n this.buffer = new Float32Array(0);\n }\n return outputBuffer;\n };\n WebsocketClient.prototype.send = function (data) {\n if (this.isOpen()) {\n try {\n this.websocket.send(data);\n }\n catch (error) {\n console.log('[WebSocketClient]', 'server connection error', error);\n }\n }\n };\n return WebsocketClient;\n}());\nvar ctx = self;\nvar websocketClient = new WebsocketClient(ctx);\nctx.onmessage = function (e) {\n switch (e.data.type) {\n case 'INIT':\n websocketClient.init(e.data.apiUrl, e.data.authToken, e.data.targetSampleRate, e.data.debug);\n break;\n case 'SET_SOURCE_SAMPLE_RATE':\n websocketClient.setSourceSampleRate(e.data.sourceSampleRate);\n break;\n case 'SET_SHARED_ARRAY_BUFFERS':\n websocketClient.setSharedArrayBuffers(e.data.controlSAB, e.data.dataSAB);\n break;\n case 'CLOSE':\n websocketClient.closeWebsocket(1000, 'Close requested by client');\n break;\n case 'START_CONTEXT':\n websocketClient.startContext(e.data.appId);\n break;\n case 'SWITCH_CONTEXT':\n websocketClient.switchContext(e.data.appId);\n break;\n case 'STOP_CONTEXT':\n websocketClient.stopContext();\n break;\n case 'AUDIO':\n websocketClient.sendAudio(e.data.payload);\n break;\n default:\n console.log('WORKER', e);\n }\n};\nfunction float32ToInt16(buffer) {\n var buf = new Int16Array(buffer.length);\n for (var l = 0; l < buffer.length; l++) {\n buf[l] = buffer[l] * (buffer[l] < 0 ? 0x8000 : 0x7fff);\n }\n return buf;\n}\nfunction generateFilter(sourceSampleRate, targetSampleRate, length) {\n if (length % 2 === 0) {\n throw Error('Filter length must be odd');\n }\n var cutoff = targetSampleRate / 2;\n var filter = new Float32Array(length);\n var sum = 0;\n for (var i = 0; i < length; i++) {\n var x = sinc(((2 * cutoff) / sourceSampleRate) * (i - (length - 1) / 2));\n sum += x;\n filter[i] = x;\n }\n for (var i = 0; i < length; i++) {\n filter[i] = filter[i] / sum;\n }\n return filter;\n}\nfunction sinc(x) {\n if (x === 0.0) {\n return 1.0;\n }\n var piX = Math.PI * x;\n return Math.sin(piX) / piX;\n}\n"],{type:"text/javascript"}),n=window.URL.createObjectURL(e);this.worker=new Worker(n),this.worker.addEventListener("message",this.onWebsocketMessage)}onResponse(t){this.onResponseCb=t}onClose(t){this.onCloseCb=t}initialize(t,e,n,i){return o(this,void 0,void 0,(function*(){return this.worker.postMessage({type:"INIT",apiUrl:t,authToken:e,targetSampleRate:n,debug:i}),this.startCbs=[],this.stopCbs=[],new Promise((t=>{this.resolveInitialization=t}))}))}setSourceSampleRate(t){return o(this,void 0,void 0,(function*(){return this.worker.postMessage({type:"SET_SOURCE_SAMPLE_RATE",sourceSampleRate:t}),new Promise((t=>{this.resolveSourceSampleRateSet=t}))}))}close(){return o(this,void 0,void 0,(function*(){return new Promise(((t,e)=>{this.worker.postMessage({type:"CLOSE",code:1e3,message:"Client has ended the session"}),t()}))}))}startContext(t){return o(this,void 0,void 0,(function*(){return new Promise(((e,n)=>{this.startCbs.push(((t,i)=>{void 0!==t?n(t):e(i)})),null!=t?this.worker.postMessage({type:"START_CONTEXT",appId:t}):this.worker.postMessage({type:"START_CONTEXT"})}))}))}stopContext(){return o(this,void 0,void 0,(function*(){return new Promise(((t,e)=>{this.stopCbs.push(((n,i)=>{void 0!==n?e(n):t(i)})),this.worker.postMessage({type:"STOP_CONTEXT"})}))}))}switchContext(t){return o(this,void 0,void 0,(function*(){return new Promise(((e,n)=>{this.startCbs.push(((t,i)=>{void 0!==t?n(t):e(i)})),this.worker.postMessage({type:"SWITCH_CONTEXT",appId:t})}))}))}postMessage(t){this.worker.postMessage(t)}sendAudio(t){this.worker.postMessage({type:"AUDIO",payload:t})}}class T{constructor(){this.storage=window.localStorage}get(t){return this.storage.getItem(t)}set(t,e){this.storage.setItem(t,e)}getOrSet(t,e){let n=this.storage.getItem(t);return null===n&&(n=e(),this.storage.setItem(t,n)),n}}function I(t,e){return{intent:t.intent,isFinal:e}}const W="speechly-auth-token";class _{constructor(e){var n,o,r,a,c,d,l,h;if(this.activeContexts=new Map,this.maxReconnectAttemptCount=10,this.contextStopDelay=250,this.connectAttempt=0,this.connectPromise=null,this.listeningPromise=null,this.cbs=[],this.state=t.DecoderState.Disconnected,this.handleWebsocketResponse=e=>{var n;this.debug&&console.log("[Decoder]","Received response",e);const{audio_context:i,segment_id:o,type:r}=e;let{data:a}=e;const c=this.activeContexts.get(i);if(void 0===c)return void console.warn("[Decoder]","Received response for non-existent context",i);let d=null!==(n=c.get(o))&&void 0!==n?n:new s(i,o);switch(r){case t.WebsocketResponseType.TentativeTranscript:const e=function(t){return t.words.map((({word:t,index:e,start_timestamp:n,end_timestamp:i})=>({value:t,index:e,startTimestamp:n,endTimestamp:i,isFinal:!1})))}(a),n=a.transcript;this.cbs.forEach((t=>t.tentativeTranscriptCbs.forEach((t=>t(i,o,e,n))))),d=d.updateTranscript(e);break;case t.WebsocketResponseType.Transcript:const s=function(t){return{value:t.word,index:t.index,startTimestamp:t.start_timestamp,endTimestamp:t.end_timestamp,isFinal:!0}}(a);this.cbs.forEach((t=>t.transcriptCbs.forEach((t=>t(i,o,s))))),d=d.updateTranscript([s]);break;case t.WebsocketResponseType.TentativeEntities:const r=function(t){return t.entities.map((({entity:t,value:e,start_position:n,end_position:i})=>({type:t,value:e,startPosition:n,endPosition:i,isFinal:!1})))}(a);this.cbs.forEach((t=>t.tentativeEntityCbs.forEach((t=>t(i,o,r))))),d=d.updateEntities(r);break;case t.WebsocketResponseType.Entity:const c=function(t){return{type:t.entity,value:t.value,startPosition:t.start_position,endPosition:t.end_position,isFinal:!0}}(a);this.cbs.forEach((t=>t.entityCbs.forEach((t=>t(i,o,c))))),d=d.updateEntities([c]);break;case t.WebsocketResponseType.TentativeIntent:const l=I(a,!1);this.cbs.forEach((t=>t.tentativeIntentCbs.forEach((t=>t(i,o,l))))),d=d.updateIntent(l);break;case t.WebsocketResponseType.Intent:const h=I(a,!0);this.cbs.forEach((t=>t.intentCbs.forEach((t=>t(i,o,h))))),d=d.updateIntent(h);break;case t.WebsocketResponseType.SegmentEnd:d=d.finalize()}c.set(o,d),this.activeContexts.set(i,c),this.logSegments&&console.info(d.toString()),this.cbs.forEach((t=>t.segmentChangeCbs.forEach((t=>t(d.toSegment())))))},this.handleWebsocketClosure=e=>{if(1e3===e.code)this.debug&&console.log("[Decoder]","Websocket closed",e);else{if(console.error("[Decoder]","Websocket closed due to error",e),void 0===this.deviceId)return void this.setState(t.DecoderState.Failed);this.listeningPromise=null,this.setState(t.DecoderState.Disconnected),this.reconnect()}},this.logSegments=null!==(n=e.logSegments)&&void 0!==n&&n,this.appId=null!==(o=e.appId)&&void 0!==o?o:void 0,this.projectId=null!==(r=e.projectId)&&void 0!==r?r:void 0,this.sampleRate=null!==(a=e.sampleRate)&&void 0!==a?a:i,this.debug=null!==(c=e.debug)&&void 0!==c&&c,void 0!==this.appId&&void 0!==this.projectId)throw Error("[Decoder] You cannot use both appId and projectId at the same time");if(void 0===this.appId&&void 0===this.projectId)throw Error("[Decoder] Either an appId or a projectId is required");const u=null!==(d=e.apiUrl)&&void 0!==d?d:"https://api.speechly.com";this.apiUrl=function(t,e){const n=new URLSearchParams;return n.append("sampleRate",e.toString()),`${t}?${n.toString()}`}(u.replace("http","ws")+"/ws/v1",this.sampleRate),this.loginUrl=`${u}/login`,this.storage=null!==(l=e.storage)&&void 0!==l?l:new T,this.deviceId=this.storage.getOrSet("speechly-device-id",k),this.apiClient=new x,this.apiClient.onResponse(this.handleWebsocketResponse),this.apiClient.onClose(this.handleWebsocketClosure),(null===(h=e.connect)||void 0===h||h)&&this.connect()}getReconnectDelayMs(t){return 100*Math.pow(2,t)}sleep(t){return o(this,void 0,void 0,(function*(){return new Promise((e=>setTimeout(e,t)))}))}connect(){return o(this,void 0,void 0,(function*(){null===this.connectPromise&&(this.connectPromise=(()=>o(this,void 0,void 0,(function*(){const e=this.storage.get(W);if(null!=e&&R(e,this.projectId,this.appId,this.deviceId))this.authToken=e;else try{this.authToken=yield function(t,e,n,i,s=fetch,r=Date.now){var a;return o(this,void 0,void 0,(function*(){let o;o=void 0!==e?{projectId:e,deviceId:i}:{appId:n,deviceId:i};const c=yield s(t,{method:"POST",headers:{"Content-Type":"application/json"},body:JSON.stringify(o)}),d=yield c.json();if(200!==c.status)throw Error(null!==(a=d.error)&&void 0!==a?a:`Speechly API login request failed with ${c.status}`);if(void 0===d.access_token)throw Error("Invalid login response from Speechly API");if(!R(d.access_token,e,n,i,r))throw Error("Invalid token received from Speechly API");return d.access_token}))}(this.loginUrl,this.projectId,this.appId,this.deviceId),this.storage.set(W,this.authToken)}catch(e){throw this.setState(t.DecoderState.Failed),e}yield this.apiClient.initialize(this.apiUrl,this.authToken,this.sampleRate,this.debug),this.advanceState(t.DecoderState.Connected)})))()),yield this.connectPromise}))}close(){return o(this,void 0,void 0,(function*(){let e;try{yield this.apiClient.close()}catch(t){e=t.message}if(this.activeContexts.clear(),this.connectPromise=null,this.setState(t.DecoderState.Disconnected),void 0!==e)throw Error(e)}))}startContext(e){return o(this,void 0,void 0,(function*(){if(this.state===t.DecoderState.Failed)throw Error("[Decoder] startContext cannot be run in Failed state.");if(this.state<t.DecoderState.Connected)yield this.connect();else if(this.state>t.DecoderState.Connected)throw Error("[Decoder] Unable to complete startContext: Expected Connected state, but was in "+f(this.state)+".");let i;if(this.setState(t.DecoderState.Active),null!=this.projectId)i=yield this.apiClient.startContext(null==e?void 0:e.appId);else{if(null!=(null==e?void 0:e.appId)&&this.appId!==(null==e?void 0:e.appId))throw this.setState(t.DecoderState.Failed),n;i=yield this.apiClient.startContext()}if(this.state<t.DecoderState.Active)throw Error("[Decoder] Unable to complete startContext: Problem acquiring contextId");return this.activeContexts.set(i,new Map),this.cbs.forEach((t=>t.contextStartedCbs.forEach((t=>t(i))))),i}))}sendAudio(e){if(this.state!==t.DecoderState.Active)throw Error("[Decoder] Unable to complete startContext: Expected Active state, but was in "+f(this.state)+".");this.apiClient.sendAudio(e)}stopContext(){return o(this,void 0,void 0,(function*(){if(this.state===t.DecoderState.Failed)throw Error("[Decoder] stopContext cannot be run in unrecovable error state.");if(this.state!==t.DecoderState.Active)throw Error("[Decoder] Unable to complete stopContext: Expected Active state, but was in "+f(this.state)+".");this.setState(t.DecoderState.Connected),yield this.sleep(this.contextStopDelay);try{const t=yield this.apiClient.stopContext();return this.activeContexts.delete(t),this.cbs.forEach((e=>e.contextStoppedCbs.forEach((e=>e(t))))),t}catch(e){throw this.setState(t.DecoderState.Failed),e}}))}switchContext(e){return o(this,void 0,void 0,(function*(){if(this.state!==t.DecoderState.Active)throw Error("[Decoder] Unable to complete switchContext: Expected Active state, but was in "+f(this.state)+".");const n=yield this.apiClient.switchContext(e);this.activeContexts.set(n,new Map)}))}registerListener(t){this.cbs.push(t)}setSampleRate(t){return o(this,void 0,void 0,(function*(){this.sampleRate=t,yield this.apiClient.setSourceSampleRate(t)}))}useSharedArrayBuffers(t,e){this.apiClient.postMessage({type:"SET_SHARED_ARRAY_BUFFERS",controlSAB:t,dataSAB:e})}reconnect(){return o(this,void 0,void 0,(function*(){this.debug&&console.log("[Decoder]","Reconnecting...",this.connectAttempt),this.connectPromise=null,this.connectAttempt<this.maxReconnectAttemptCount?(yield this.sleep(this.getReconnectDelayMs(this.connectAttempt++)),yield this.connect()):console.error("[Decoder] Maximum reconnect count reached, giving up automatic reconnect.")}))}advanceState(t){this.state>=t||this.setState(t)}setState(t){this.state!==t&&(this.debug&&console.log("[Decoder]",f(this.state),"->",f(t)),this.state=t,this.cbs.forEach((e=>{var n;return null===(n=e.stateChangeCbs)||void 0===n?void 0:n.forEach((e=>e(t)))})))}}t.BrowserClient=class{constructor(t){var e,n;this.debug=!1,this.initialized=!1,this.active=!1,this.stats={maxSignalEnergy:0,sentSamples:0};const i=window.navigator.mediaDevices.getSupportedConstraints();this.nativeResamplingSupported=!0===i.sampleRate,this.isMobileSafari=["iPad Simulator","iPhone Simulator","iPod Simulator","iPad","iPhone","iPod"].indexOf(navigator.platform)>=0||navigator.userAgent.includes("Mac")&&"ontouchend"in document,this.isSafari=this.isMobileSafari||void 0!==window.safari,this.useSAB=!this.isSafari,this.debug=null===(e=t.debug)||void 0===e||e,this.callbacks=new p,this.decoder=null!==(n=t.decoder)&&void 0!==n?n:new _(t),this.decoder.registerListener(this.callbacks)}initialize(t){var n,s;return o(this,void 0,void 0,(function*(){if(!this.initialized){this.initialized=!0,this.debug&&console.log("[BrowserClient]","initializing"),yield this.decoder.connect();try{const t={};if(this.nativeResamplingSupported&&(t.sampleRate=i),void 0!==window.webkitAudioContext)try{this.audioContext=new window.webkitAudioContext(t)}catch(t){this.debug&&console.log("[BrowserClient]","creating audioContext without samplerate conversion",t),this.audioContext=new window.webkitAudioContext}else this.audioContext=new window.AudioContext(t),void 0!==window.webkitAudioContext&&(yield this.audioContext.resume())}catch(t){throw e}if(this.isSafari||void 0===window.AudioWorkletNode){if(this.debug&&console.log("[BrowserClient]","using ScriptProcessorNode"),void 0!==window.webkitAudioContext){const t=this.audioContext.sampleRate/i,e=4096*Math.pow(2,Math.ceil(Math.log(t)/Math.log(2)));this.audioProcessor=this.audioContext.createScriptProcessor(e,1,1)}else this.audioProcessor=this.audioContext.createScriptProcessor(void 0,1,1);this.audioProcessor.connect(this.audioContext.destination),this.audioProcessor.addEventListener("audioprocess",(t=>{this.handleAudio(t.inputBuffer.getChannelData(0))}))}else{this.debug&&console.log("[BrowserClient]","using AudioWorkletNode");const t=new Blob(["\n// Indices for the Control SAB.\nconst CONTROL = {\n 'WRITE_INDEX': 0,\n 'FRAMES_AVAILABLE': 1,\n 'LOCK': 2,\n};\n\nclass SpeechlyProcessor extends AudioWorkletProcessor {\n constructor() {\n super();\n\n this._initialized = false;\n this.debug = false;\n this.port.onmessage = this._initialize.bind(this);\n }\n\n _initialize(event) {\n this.controlSAB = new Int32Array(event.data.controlSAB);\n this.dataSAB = new Float32Array(event.data.dataSAB);\n this.debug = event.data.debug;\n if (this.debug) {\n console.log('[BrowserClient AudioWorkletNode]', 'initializing audioworklet');\n }\n this.sharedBufferSize = this.dataSAB.length;\n this.buffer = new Float32Array(0);\n this._initialized = true;\n }\n\n _transferDataToSharedBuffer(data) {\n this.controlSAB[CONTROL.LOCK] = 1;\n let inputWriteIndex = this.controlSAB[CONTROL.WRITE_INDEX];\n if (this.controlSAB[CONTROL.FRAMES_AVAILABLE] > 0) {\n if (inputWriteIndex + data.length > this.sharedBufferSize) {\n // console.log('buffer overflow')\n inputWriteIndex = 0;\n }\n }\n this.dataSAB.set(data, inputWriteIndex);\n this.controlSAB[CONTROL.WRITE_INDEX] = inputWriteIndex + data.length;\n this.controlSAB[CONTROL.FRAMES_AVAILABLE] = inputWriteIndex + data.length;\n this.controlSAB[CONTROL.LOCK] = 0;\n }\n\n _pushData(data) {\n if (this.debug) {\n const signalEnergy = getStandardDeviation(data)\n this.port.postMessage({\n type: 'STATS',\n signalEnergy: signalEnergy,\n samples: data.length,\n });\n }\n\n if (this.buffer.length > this.sharedBufferSize) {\n const dataToTransfer = this.buffer.subarray(0, this.sharedBufferSize);\n this._transferDataToSharedBuffer(dataToTransfer);\n this.buffer = this.buffer.subarray(this.sharedBufferSize);\n }\n let concat = new Float32Array(this.buffer.length + data.length);\n concat.set(this.buffer);\n concat.set(data, this.buffer.length);\n this.buffer = concat;\n }\n\n process(inputs, outputs, parameters) {\n const inputChannelData = inputs[0][0];\n if (inputChannelData !== undefined) {\n if (this.controlSAB && this.dataSAB) {\n this._pushData(inputChannelData);\n } else {\n this.port.postMessage({\n type: 'DATA',\n frames: inputChannelData\n });\n }\n }\n\n return true;\n }\n}\n\nfunction getStandardDeviation(array) {\n const n = array.length\n const mean = array.reduce((a, b) => a + b) / n\n return Math.sqrt(array.map(x => Math.pow(x - mean, 2)).reduce((a, b) => a + b) / n)\n}\n\nregisterProcessor('speechly-worklet', SpeechlyProcessor);\n"],{type:"text/javascript"}),e=window.URL.createObjectURL(t);if(yield this.audioContext.audioWorklet.addModule(e),this.speechlyNode=new AudioWorkletNode(this.audioContext,"speechly-worklet"),this.speechlyNode.connect(this.audioContext.destination),this.useSAB&&void 0!==window.SharedArrayBuffer){this.debug&&console.log("[BrowserClient]","using SharedArrayBuffer");const t=new window.SharedArrayBuffer(4*Int32Array.BYTES_PER_ELEMENT),e=new window.SharedArrayBuffer(1024*Float32Array.BYTES_PER_ELEMENT);this.decoder.useSharedArrayBuffers(t,e),this.speechlyNode.port.postMessage({type:"SET_SHARED_ARRAY_BUFFERS",controlSAB:t,dataSAB:e,debug:this.debug})}else this.debug&&console.log("[BrowserClient]","can not use SharedArrayBuffer");this.speechlyNode.port.onmessage=t=>{switch(t.data.type){case"STATS":t.data.signalEnergy>this.stats.maxSignalEnergy&&(this.stats.maxSignalEnergy=t.data.signalEnergy),this.stats.sentSamples+=parseInt(t.data.samples);break;case"DATA":this.handleAudio(t.data.frames)}}}this.debug&&console.log("[BrowserClient]","audioContext sampleRate is",null===(n=this.audioContext)||void 0===n?void 0:n.sampleRate),yield this.decoder.setSampleRate(null===(s=this.audioContext)||void 0===s?void 0:s.sampleRate),(null==t?void 0:t.mediaStream)&&(yield this.attach(null==t?void 0:t.mediaStream))}}))}close(){var t,e,n;return o(this,void 0,void 0,(function*(){yield this.detach(),null!==this.speechlyNode&&(null===(t=this.speechlyNode)||void 0===t||t.port.close(),null===(e=this.speechlyNode)||void 0===e||e.disconnect()),void 0!==this.audioProcessor&&(null===(n=this.audioProcessor)||void 0===n||n.disconnect()),yield this.decoder.close(),this.initialized=!1}))}attach(t){var e,n,i,s,r,a;return o(this,void 0,void 0,(function*(){if(yield this.initialize(),yield this.detach(),this.stream=null===(e=this.audioContext)||void 0===e?void 0:e.createMediaStreamSource(t),"running"!==(null===(n=this.audioContext)||void 0===n?void 0:n.state)&&(this.debug&&console.log("[BrowserClient]","audioContext resume required, state is",null===(i=this.audioContext)||void 0===i?void 0:i.state),yield null===(s=this.audioContext)||void 0===s?void 0:s.resume()),this.speechlyNode)null===(r=this.stream)||void 0===r||r.connect(this.speechlyNode);else{if(!this.audioProcessor)throw Error("[BrowserClient] cannot attach to mediaStream, not initialized");null===(a=this.stream)||void 0===a||a.connect(this.audioProcessor)}}))}detach(){return o(this,void 0,void 0,(function*(){this.active&&(yield this.stop()),this.stream&&(this.stream.disconnect(),this.stream=void 0)}))}uploadAudioData(t,e){var n;return o(this,void 0,void 0,(function*(){yield this.initialize();const i=yield null===(n=this.audioContext)||void 0===n?void 0:n.decodeAudioData(t);if(void 0===i)throw Error("Could not decode audioData");const s=i.getChannelData(0);if(i.numberOfChannels>1){const t=i.getChannelData(1);for(let e=0;e<s.length;e++)s[e]=(s[e]+t[e])/2}const o=yield this.start(e);let r;for(let t=0;t<s.length;t+=16e3){const e=t+16e3;r=e>s.length?s.slice(t):s.slice(t,e),this.handleAudio(r)}return yield this.stop(),o}))}start(t){return o(this,void 0,void 0,(function*(){yield this.initialize();const e=this.decoder.startContext(t);return this.active=!0,e}))}stop(){return o(this,void 0,void 0,(function*(){let t=null;try{t=yield this.decoder.stopContext(),0===this.stats.sentSamples&&console.warn("[BrowserClient]","audioContext contained no audio data")}catch(t){console.warn("[BrowserClient]","stop() failed",t)}finally{this.active=!1,this.stats.sentSamples=0}return t}))}handleAudio(t){this.active&&t.length>0&&(this.stats.sentSamples+=t.length,this.decoder.sendAudio(t))}isActive(){return this.active}onSegmentChange(t){this.callbacks.segmentChangeCbs.push(t)}onTranscript(t){this.callbacks.transcriptCbs.push(t)}onEntity(t){this.callbacks.entityCbs.push(t)}onIntent(t){this.callbacks.intentCbs.push(t)}onTentativeTranscript(t){this.callbacks.tentativeTranscriptCbs.push(t)}onTentativeEntities(t){this.callbacks.tentativeEntityCbs.push(t)}onTentativeIntent(t){this.callbacks.tentativeIntentCbs.push(t)}onStateChange(t){this.callbacks.stateChangeCbs.push(t)}},t.BrowserMicrophone=class{constructor(){this.muted=!1,this.initialized=!1;try{const t=window.navigator.mediaDevices.getSupportedConstraints();this.nativeResamplingSupported=!0===t.sampleRate,this.autoGainControl=!0===t.autoGainControl}catch(t){this.nativeResamplingSupported=!1,this.autoGainControl=!1}}initialize(){var t;return o(this,void 0,void 0,(function*(){if(this.initialized)return;if(void 0===(null===(t=window.navigator)||void 0===t?void 0:t.mediaDevices))throw e;const n={video:!1};this.nativeResamplingSupported||this.autoGainControl?n.audio={sampleRate:i,autoGainControl:this.autoGainControl}:n.audio=!0;try{this.mediaStream=yield window.navigator.mediaDevices.getUserMedia(n)}catch(t){throw console.error(t),c}this.initialized=!0,this.muted=!0}))}close(){return o(this,void 0,void 0,(function*(){if(!this.initialized)throw r;this.muted=!0;this.mediaStream.getTracks().forEach((t=>t.stop())),this.mediaStream=void 0,this.initialized=!1}))}isRecording(){return!this.muted}},t.CloudDecoder=_,t.DefaultSampleRate=i,t.ErrAlreadyInitialized=a,t.ErrAppIdChangeWithoutProjectLogin=n,t.ErrDeviceNotSupported=e,t.ErrKeyNotFound=h,t.ErrNoAudioConsent=c,t.ErrNoStorageSupport=l,t.ErrNotInitialized=r,t.EventCallbacks=p,t.SegmentState=s,t.stateToString=f,Object.defineProperty(t,"__esModule",{value:!0})})); | ||
| !function(t,e){!function(i){var n=e,s=t&&t.exports==n&&t,o="object"==typeof N&&N;o.global!==o&&o.window!==o||(i=o);var a=function(t){this.message=t};(a.prototype=new Error).name="InvalidCharacterError";var d=function(t){throw new a(t)},c="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",l=/[\t\n\f\r ]/g,r={encode:function(t){t=String(t),/[^\0-\xFF]/.test(t)&&d("The string to be encoded contains characters outside of the Latin1 range.");for(var e,i,n,s,o=t.length%3,a="",l=-1,r=t.length-o;++l<r;)e=t.charCodeAt(l)<<16,i=t.charCodeAt(++l)<<8,n=t.charCodeAt(++l),a+=c.charAt((s=e+i+n)>>18&63)+c.charAt(s>>12&63)+c.charAt(s>>6&63)+c.charAt(63&s);return 2==o?(e=t.charCodeAt(l)<<8,i=t.charCodeAt(++l),a+=c.charAt((s=e+i)>>10)+c.charAt(s>>4&63)+c.charAt(s<<2&63)+"="):1==o&&(s=t.charCodeAt(l),a+=c.charAt(s>>2)+c.charAt(s<<4&63)+"=="),a},decode:function(t){var e=(t=String(t).replace(l,"")).length;e%4==0&&(e=(t=t.replace(/==?$/,"")).length),(e%4==1||/[^+a-zA-Z0-9/]/.test(t))&&d("Invalid character: the string to be decoded is not correctly encoded.");for(var i,n,s=0,o="",a=-1;++a<e;)n=c.indexOf(t.charAt(a)),i=s%4?64*i+n:n,s++%4&&(o+=String.fromCharCode(255&i>>(-2*s&6)));return o},version:"0.1.0"};if(n&&!n.nodeType)if(s)s.exports=r;else for(var h in r)r.hasOwnProperty(h)&&(n[h]=r[h]);else i.base64=r}(N)}(Y,Y.exports);function T(t,e,i,n,s=Date.now){const o=function(t){const e=t.split(".")[1];let i;try{i=JSON.parse(Y.exports.decode(e))}catch(t){throw new Error("Error decoding Speechly token!")}return{appId:i.appId,projectId:i.projectId,deviceId:i.deviceId,configId:i.configId,scopes:i.scope.split(" "),issuer:i.iss,audience:i.aud,expiresAtMs:1e3*i.exp}}(t);return!(o.expiresAtMs-s()<36e5)&&(o.appId===i&&o.projectId===e&&o.deviceId===n)}class z{constructor(){this.startCbs=[],this.stopCbs=[],this.onResponseCb=()=>{},this.onCloseCb=()=>{},this.onWebsocketMessage=e=>{const i=e.data;switch(i.type){case t.WorkerSignal.Opened:null!=this.resolveInitialization&&this.resolveInitialization();break;case t.WorkerSignal.Closed:this.onCloseCb({code:e.data.code,reason:e.data.reason,wasClean:e.data.wasClean});break;case t.WorkerSignal.AudioProcessorReady:null!=this.resolveSourceSampleRateSet&&this.resolveSourceSampleRateSet();break;case t.WebsocketResponseType.Started:this.onResponseCb(i),this.startCbs.forEach((t=>{try{t(void 0,i.audio_context)}catch(t){console.error('[SpeechlyClient] Error while invoking "onStart" callback:',t)}})),this.startCbs.length=0;break;case t.WebsocketResponseType.Stopped:this.onResponseCb(i),this.stopCbs.forEach((t=>{try{t(void 0,i.audio_context)}catch(t){console.error('[SpeechlyClient] Error while invoking "onStop" callback:',t)}})),this.stopCbs.length=0;break;default:this.onResponseCb(i)}},this.worker=new"/* rollup-plugin-web-worker-loader */
var worker_code=function(){"use strict";class t{static downsample(t,e,s=0,i=-1,o=0,r=-1){if(i<0&&(i=t.length-s),r<0&&(r=e.length-o),r>i)throw new Error(`Can't downsample: source array length (${i}) is shorter than destination (${r})`);if(0===r)throw new Error(`Can't downsample: source array length (${i}) can't be downsampled to zero-length destination.`);if(0===i)throw new Error("Can't downsample: source range can't be zero length.");if(1===i)return void(e[0]=t[0]);let a=0;const n=(r-1)/(i-1);let h=0,l=0;const d=s+i;for(;s<d;s++){const i=.5-Math.abs(a);h+=t[s]*i,l+=i,a+=n,a>=.5&&(a-=1,e[o++]=h/l,h=0,l=0)}l>0&&(e[o++]=h/l)}static getEnergy(t,e=0,s=-1){if(s<0&&(s=t.length-e),s<=0)return 0;const i=e+s;let o=0;for(;e<i;e++)o+=t[e]*t[e];return Math.sqrt(o/s)}static getAudioPeak(t,e=0,s=-1){if(s<0&&(s=t.length-e),s<=0)return 0;const i=e+s;let o=0;for(;e<i;e++)t[e]>o&&(o=t[e]);return o}static convertInt16ToFloat(t,e,s=0,i=-1,o=0){i<0&&(i=t.length/2-s);const r=Math.min(t.length/2-s,e.length-o);if((i=Math.min(i,r))<=0)return 0;let a=2*s;const n=a+2*i;for(;a<n;)e[o++]=(t[a++]+(t[a++]<<8))/32767;return i}static convertFloatToInt16(t,e,s=0,i=-1,o=0){i<0&&(i=t.length-s);const r=s+i;for(;s<r;)e[o++]=~~(32767*t[s++])}static energyToDb(e){return 10*Math.log(e)/t.LOG_2_PLUS_LOG_5}static dbToEnergy(t){return Math.pow(10,t/10)}}t.LOG_2_PLUS_LOG_5=Math.log(2)+Math.log(5);class e{constructor(t,e,s){this.isActive=!1,this.streamSamplePos=0,this.samplesSent=0,this.utteranceSerial=-1,this.sendAudio=(t,e,s)=>{},this.onVadSignalLow=()=>{},this.onVadSignalHigh=()=>{},this.inputSampleRate=16e3,this.internalSampleRate=16e3,this.historyFrames=5,this.frameMillis=30,this.currentFrameNumber=0,this.frameSamplePos=0,this.streamFramePos=0,this.isSignalDetected=!1,this.inputSampleRate=t,this.internalSampleRate=e,this.historyFrames=s,this.frameSamples=~~(this.internalSampleRate*this.frameMillis/1e3),this.sampleRingBuffer=new Float32Array(this.frameSamples*this.historyFrames)}startContext(){this.isActive=!0,this.samplesSent=0,this.utteranceSerial++}stopContext(){this.flush(),this.isActive=!1}resetStream(){var t;this.streamFramePos=0,this.streamSamplePos=0,this.frameSamplePos=0,this.currentFrameNumber=0,this.utteranceSerial=-1,null===(t=this.vad)||void 0===t||t.resetVAD()}flush(){this.processAudio(this.sampleRingBuffer,0,this.frameSamplePos,!0)}processAudio(e,s=0,i=-1,o=!1){if(i<0&&(i=e.length),0===i)return;let r=s;const a=s+i;for(;r<a;){const s=this.currentFrameNumber*this.frameSamples;if(this.inputSampleRate===this.internalSampleRate){const t=Math.min(a-r,this.frameSamples-this.frameSamplePos),i=this.frameSamplePos+t;for(;this.frameSamplePos<i;)this.sampleRingBuffer[s+this.frameSamplePos++]=e[r++]}else{const i=1*this.inputSampleRate/this.internalSampleRate,o=Math.min(a-r,Math.round(i*(this.frameSamples-this.frameSamplePos))),n=Math.min(Math.round((a-r)/i),this.frameSamples-this.frameSamplePos);n>0&&t.downsample(e,this.sampleRingBuffer,r,o,s+this.frameSamplePos,n),r+=o,this.frameSamplePos+=n}if(this.frameSamplePos>this.frameSamples)throw new Error(`this.frameSamplePos (${this.frameSamplePos}) > this.frameSamples (${this.frameSamples})`);if(this.frameSamplePos===this.frameSamples||o){const t=o?this.frameSamplePos:this.frameSamples;if(o||this.processFrame(this.sampleRingBuffer,s,t),this.isActive){if(0===this.samplesSent){const t=Math.min(this.streamFramePos,this.historyFrames-1);let e=(this.currentFrameNumber+this.historyFrames-t)%this.historyFrames;for(;e!==this.currentFrameNumber;)this.sendAudio(this.sampleRingBuffer,e*this.frameSamples,this.frameSamples),this.samplesSent+=this.frameSamples,e=(e+1)%this.historyFrames}this.sendAudio(this.sampleRingBuffer,s,t),this.samplesSent+=t}this.frameSamplePos===this.frameSamples&&(this.frameSamplePos=0,this.streamFramePos+=1,this.streamSamplePos+=t,this.currentFrameNumber=(this.currentFrameNumber+1)%this.historyFrames)}}}processFrame(t,e=0,s=-1){this.analyzeAudioFrame(t,e,s),this.autoControlListening()}analyzeAudioFrame(t,e,s){var i;(null===(i=this.vad)||void 0===i?void 0:i.vadOptions.enabled)&&this.vad.processFrame(t,e,s)}autoControlListening(){var t;(null===(t=this.vad)||void 0===t?void 0:t.vadOptions.enabled)&&(!this.isSignalDetected&&this.vad.isSignalDetected&&(this.onVadSignalHigh(),this.isSignalDetected=!0),this.isSignalDetected&&!this.vad.isSignalDetected&&(this.onVadSignalLow(),this.isSignalDetected=!1))}}class s{constructor(t){this.isSignalDetected=!1,this.signalDb=-90,this.noiseLevelDb=-90,this.frameMillis=30,this.energy=0,this.baselineEnergy=-1,this.loudFrameBits=0,this.vadSustainMillisLeft=0,this.vadOptions=t}adjustVadOptions(t){this.vadOptions=Object.assign(Object.assign({},this.vadOptions),t)}resetVAD(){this.isSignalDetected=!1,this.loudFrameBits=0,this.energy=0,this.baselineEnergy=-1}processFrame(e,s=0,i=-1){if(!this.vadOptions.enabled)return void this.resetVAD();this.energy=t.getEnergy(e,s,i),this.baselineEnergy<0&&(this.baselineEnergy=this.energy);const o=this.energy>Math.max(t.dbToEnergy(this.vadOptions.noiseGateDb),this.baselineEnergy*t.dbToEnergy(this.vadOptions.signalToNoiseDb));this.pushFrameHistory(o),this.isSignalDetected=this.determineNewSignalState(this.isSignalDetected),this.adaptBackgroundNoise(),this.signalDb=t.energyToDb(this.energy/this.baselineEnergy),this.noiseLevelDb=t.energyToDb(this.baselineEnergy)}determineNewSignalState(t){this.vadSustainMillisLeft=Math.max(this.vadSustainMillisLeft-this.frameMillis,0);const e=this.countLoudFrames(this.vadOptions.signalSearchFrames),s=Math.round(this.vadOptions.signalActivation*this.vadOptions.signalSearchFrames),i=Math.round(this.vadOptions.signalRelease*this.vadOptions.signalSearchFrames);return e>=s?(this.vadSustainMillisLeft=this.vadOptions.signalSustainMillis,!0):!(e<=i&&0===this.vadSustainMillisLeft)&&t}adaptBackgroundNoise(){if(!this.isSignalDetected&&this.vadOptions.noiseLearnHalftimeMillis>0){var t=Math.pow(2,-this.frameMillis/this.vadOptions.noiseLearnHalftimeMillis);this.baselineEnergy=this.baselineEnergy*t+this.energy*(1-t)}}pushFrameHistory(t){this.loudFrameBits=(t?1:0)|this.loudFrameBits<<1}countLoudFrames(t){let e=0,s=this.loudFrameBits;for(;t>0;)1==(1&s)&&e++,s>>=1,t--;return e}}var i,o,r;!function(t){t.Started="started",t.Stopped="stopped",t.SegmentEnd="segment_end",t.Transcript="transcript",t.Entity="entity",t.Intent="intent",t.TentativeTranscript="tentative_transcript",t.TentativeEntities="tentative_entities",t.TentativeIntent="tentative_intent"}(i||(i={})),function(t){t.Opened="WEBSOCKET_OPEN",t.Closed="WEBSOCKET_CLOSED",t.AudioProcessorReady="SOURCE_SAMPLE_RATE_SET_SUCCESS",t.VadSignalHigh="VadSignalHigh",t.VadSignalLow="VadSignalLow"}(o||(o={})),function(t){t.connect="connect",t.initAudioProcessor="initAudioProcessor",t.adjustAudioProcessor="adjustAudioProcessor",t.SET_SHARED_ARRAY_BUFFERS="SET_SHARED_ARRAY_BUFFERS",t.CLOSE="CLOSE",t.START_CONTEXT="START_CONTEXT",t.SWITCH_CONTEXT="SWITCH_CONTEXT",t.STOP_CONTEXT="STOP_CONTEXT",t.AUDIO="AUDIO",t.startStream="startStream",t.stopStream="stopStream"}(r||(r={}));const a=0,n=1,h=2;class l{constructor(t){this.targetSampleRate=16e3,this.isContextStarted=!1,this.frameMillis=30,this.outputAudioFrame=new Int16Array(this.frameMillis*this.targetSampleRate/1e3),this.debug=!1,this.onWebsocketClose=t=>{if(!this.websocket)throw Error("WebSocket is undefined");this.debug&&console.log("[WebSocketClient]","onWebsocketClose"),this.websocket.removeEventListener("open",this.onWebsocketOpen),this.websocket.removeEventListener("message",this.onWebsocketMessage),this.websocket.removeEventListener("error",this.onWebsocketError),this.websocket.removeEventListener("close",this.onWebsocketClose),this.websocket=void 0,this.workerCtx.postMessage({type:o.Closed,code:t.code,reason:t.reason,wasClean:t.wasClean})},this.onWebsocketOpen=t=>{this.debug&&console.log("[WebSocketClient]","websocket opened"),this.workerCtx.postMessage({type:o.Opened})},this.onWebsocketError=t=>{this.debug&&console.log("[WebSocketClient]","websocket error")},this.onWebsocketMessage=t=>{let e;try{e=JSON.parse(t.data)}catch(t){return void console.error("[WebSocketClient]","error parsing response from the server:",t)}this.workerCtx.postMessage(e)},this.workerCtx=t}connect(t,e,s,i){this.debug=i,this.debug&&console.log("[WebSocketClient]","connecting to ",t),this.targetSampleRate=s,this.isContextStarted=!1,this.websocket=new WebSocket(t,e),this.websocket.addEventListener("open",this.onWebsocketOpen),this.websocket.addEventListener("message",this.onWebsocketMessage),this.websocket.addEventListener("error",this.onWebsocketError),this.websocket.addEventListener("close",this.onWebsocketClose)}initAudioProcessor(i,r){this.audioProcessor=new e(i,this.targetSampleRate,5),r&&(this.audioProcessor.vad=new s(r),this.audioProcessor.onVadSignalHigh=()=>{var t,e,s,i,r;const a=null===(e=null===(t=this.audioProcessor)||void 0===t?void 0:t.vad)||void 0===e?void 0:e.vadOptions;a&&((null===(s=this.defaultContextOptions)||void 0===s?void 0:s.immediate)?a.enabled&&a.controlListening&&this.startContext():(null===(r=null===(i=this.audioProcessor)||void 0===i?void 0:i.vad)||void 0===r?void 0:r.vadOptions.enabled)&&a.enabled&&a.controlListening&&this.workerCtx.postMessage({type:o.VadSignalHigh}))},this.audioProcessor.onVadSignalLow=()=>{var t,e,s;const i=null===(e=null===(t=this.audioProcessor)||void 0===t?void 0:t.vad)||void 0===e?void 0:e.vadOptions;i&&((null===(s=this.defaultContextOptions)||void 0===s?void 0:s.immediate)?i.enabled&&i.controlListening&&this.stopContext():i.enabled&&i.controlListening&&this.workerCtx.postMessage({type:o.VadSignalLow}))}),this.audioProcessor.sendAudio=(e,s,i)=>{t.convertFloatToInt16(e,this.outputAudioFrame,s,i),this.send(this.outputAudioFrame)},this.workerCtx.postMessage({type:o.AudioProcessorReady})}adjustAudioProcessor(t){if(!this.audioProcessor)throw new Error("No AudioProcessor");if(t.vad){if(!this.audioProcessor.vad)throw new Error("No VAD in AudioProcessor. Did you define `vad` in BrowserClient constructor parameters?");this.audioProcessor.vad.adjustVadOptions(t.vad)}}setSharedArrayBuffers(t,e){this.controlSAB=new Int32Array(t),this.dataSAB=new Float32Array(e);const s=this.dataSAB.length/32;this.debug&&console.log("[WebSocketClient]","Audio handle interval",s,"ms"),setInterval(this.processAudioSAB.bind(this),s)}startStream(t){if(!this.audioProcessor)throw new Error("No AudioProcessor");this.defaultContextOptions=t,this.audioProcessor.resetStream()}stopStream(){if(!this.audioProcessor)throw new Error("No AudioProcessor");this.isContextStarted&&this.stopContext(),this.defaultContextOptions=void 0}processAudio(t){if(!this.audioProcessor)throw new Error("No AudioProcessor");this.audioProcessor.processAudio(t)}processAudioSAB(){if(!this.controlSAB||!this.dataSAB)throw new Error("No SharedArrayBuffers");const t=this.controlSAB[n];if(0===this.controlSAB[h]&&t>0){const e=this.dataSAB.subarray(0,t);this.controlSAB[n]=0,this.controlSAB[a]=0,e.length>0&&this.processAudio(e)}}startContext(t){if(!this.audioProcessor)throw Error("No AudioProcessor");this.isContextStarted?console.error("[WebSocketClient]","can't start context: active context exists"):(this.audioProcessor.startContext(),this.isContextStarted=!0,void 0!==t?this.send(JSON.stringify({event:"start",appId:t})):this.send(JSON.stringify({event:"start"})))}stopContext(){if(!this.audioProcessor)throw Error("No AudioProcessor");if(!this.isContextStarted)return void console.error("[WebSocketClient]","can't stop context: no active context");this.audioProcessor.stopContext(),this.isContextStarted=!1;const t=JSON.stringify({event:"stop"});this.send(t)}switchContext(t){if(!this.websocket)throw Error("WebSocket is undefined");if(!this.isContextStarted)return void console.error("[WebSocketClient]","can't switch context: no active context");if(void 0===t)return void console.error("[WebSocketClient]","can't switch context: new app id is undefined");const e=JSON.stringify({event:"stop"});this.send(e),this.send(JSON.stringify({event:"start",appId:t}))}closeWebsocket(t=1005,e="No Status Received"){if(this.debug&&console.log("[WebSocketClient]","Websocket closing"),!this.websocket)throw Error("WebSocket is undefined");this.websocket.close(t,e)}send(t){if(!this.websocket)throw new Error("No Websocket");if(this.websocket.readyState!==this.websocket.OPEN)throw new Error(`Expected OPEN Websocket state, but got ${this.websocket.readyState}`);try{this.websocket.send(t)}catch(t){console.log("[WebSocketClient]","server connection error",t)}}}const d=self,c=new l(d);return d.onmessage=function(t){switch(t.data.type){case r.connect:c.connect(t.data.apiUrl,t.data.authToken,t.data.targetSampleRate,t.data.debug);break;case r.initAudioProcessor:c.initAudioProcessor(t.data.sourceSampleRate,t.data.vadOptions);break;case r.adjustAudioProcessor:c.adjustAudioProcessor(t.data.params);break;case r.SET_SHARED_ARRAY_BUFFERS:c.setSharedArrayBuffers(t.data.controlSAB,t.data.dataSAB);break;case r.CLOSE:c.closeWebsocket(1e3,"Close requested by client");break;case r.startStream:c.startStream(t.data.options);break;case r.stopStream:c.stopStream();break;case r.START_CONTEXT:c.startContext(t.data.appId);break;case r.SWITCH_CONTEXT:c.switchContext(t.data.appId);break;case r.STOP_CONTEXT:c.stopContext();break;case r.AUDIO:c.processAudio(t.data.payload);break;default:console.log("WORKER",t)}},l}();

",this.worker.addEventListener("message",this.onWebsocketMessage)}onResponse(t){this.onResponseCb=t}onClose(t){this.onCloseCb=t}initialize(e,i,n,s){return o(this,void 0,void 0,(function*(){return this.worker.postMessage({type:t.ControllerSignal.connect,apiUrl:e,authToken:i,targetSampleRate:n,debug:s}),this.startCbs=[],this.stopCbs=[],new Promise((t=>{this.resolveInitialization=t}))}))}initAudioProcessor(e,i){return o(this,void 0,void 0,(function*(){return this.worker.postMessage({type:t.ControllerSignal.initAudioProcessor,sourceSampleRate:e,vadOptions:i}),new Promise((t=>{this.resolveSourceSampleRateSet=t}))}))}adjustAudioProcessor(e){this.worker.postMessage({type:t.ControllerSignal.adjustAudioProcessor,params:e})}close(){return o(this,void 0,void 0,(function*(){return new Promise(((e,i)=>{this.worker.postMessage({type:t.ControllerSignal.CLOSE,code:1e3,message:"Client has ended the session"}),e()}))}))}startStream(e){return o(this,void 0,void 0,(function*(){this.worker.postMessage({type:t.ControllerSignal.startStream,options:e})}))}stopStream(){return o(this,void 0,void 0,(function*(){this.worker.postMessage({type:t.ControllerSignal.stopStream})}))}startContext(e){return o(this,void 0,void 0,(function*(){return new Promise(((i,n)=>{this.startCbs.push(((t,e)=>{void 0!==t?n(t):i(e)})),null!=e?this.worker.postMessage({type:t.ControllerSignal.START_CONTEXT,appId:e}):this.worker.postMessage({type:t.ControllerSignal.START_CONTEXT})}))}))}stopContext(){return o(this,void 0,void 0,(function*(){return new Promise(((e,i)=>{this.stopCbs.push(((t,n)=>{void 0!==t?i(t):e(n)})),this.worker.postMessage({type:t.ControllerSignal.STOP_CONTEXT})}))}))}switchContext(e){return o(this,void 0,void 0,(function*(){return new Promise(((i,n)=>{this.startCbs.push(((t,e)=>{void 0!==t?n(t):i(e)})),this.worker.postMessage({type:t.ControllerSignal.SWITCH_CONTEXT,appId:e})}))}))}postMessage(t){this.worker.postMessage(t)}sendAudio(e){this.worker.postMessage({type:t.ControllerSignal.AUDIO,payload:e})}}class I{constructor(){this.storage=window.localStorage}get(t){return this.storage.getItem(t)}set(t,e){this.storage.setItem(t,e)}getOrSet(t,e){let i=this.storage.getItem(t);return null===i&&(i=e(),this.storage.setItem(t,i)),i}}function x(t,e){return{intent:t.intent,isFinal:e}}const f="speechly-auth-token";class k{constructor(e){var i,o,a,d,c,l,r,h;if(this.activeContexts=new Map,this.maxReconnectAttemptCount=10,this.contextStopDelay=250,this.connectAttempt=0,this.connectPromise=null,this.cbs=[],this.state=t.DecoderState.Disconnected,this.handleWebsocketResponse=e=>{switch(this.debug&&console.log("[Decoder]","Received response",e),e.type){case t.WorkerSignal.VadSignalHigh:this.cbs.forEach((t=>t.onVadStateChange.forEach((t=>t(!0)))));break;case t.WorkerSignal.VadSignalLow:this.cbs.forEach((t=>t.onVadStateChange.forEach((t=>t(!1)))));break;case t.WebsocketResponseType.Started:this.activeContexts.set(e.audio_context,new Map),this.cbs.forEach((t=>t.contextStartedCbs.forEach((t=>t(e.audio_context)))));break;case t.WebsocketResponseType.Stopped:this.activeContexts.delete(e.audio_context),this.cbs.forEach((t=>t.contextStoppedCbs.forEach((t=>t(e.audio_context)))));break;default:this.handleSegmentUpdate(e)}},this.handleSegmentUpdate=e=>{var i;const{audio_context:n,segment_id:o,type:a}=e;let{data:d}=e;const c=this.activeContexts.get(n);if(void 0===c)return void console.warn("[Decoder]","Received response for non-existent context",n);let l=null!==(i=c.get(o))&&void 0!==i?i:new s(n,o);switch(a){case t.WebsocketResponseType.TentativeTranscript:const e=function(t){return t.words.map((({word:t,index:e,start_timestamp:i,end_timestamp:n})=>({value:t,index:e,startTimestamp:i,endTimestamp:n,isFinal:!1})))}(d),i=d.transcript;this.cbs.forEach((t=>t.tentativeTranscriptCbs.forEach((t=>t(n,o,e,i))))),l=l.updateTranscript(e);break;case t.WebsocketResponseType.Transcript:const s=function(t){return{value:t.word,index:t.index,startTimestamp:t.start_timestamp,endTimestamp:t.end_timestamp,isFinal:!0}}(d);this.cbs.forEach((t=>t.transcriptCbs.forEach((t=>t(n,o,s))))),l=l.updateTranscript([s]);break;case t.WebsocketResponseType.TentativeEntities:const a=function(t){return t.entities.map((({entity:t,value:e,start_position:i,end_position:n})=>({type:t,value:e,startPosition:i,endPosition:n,isFinal:!1})))}(d);this.cbs.forEach((t=>t.tentativeEntityCbs.forEach((t=>t(n,o,a))))),l=l.updateEntities(a);break;case t.WebsocketResponseType.Entity:const c=function(t){return{type:t.entity,value:t.value,startPosition:t.start_position,endPosition:t.end_position,isFinal:!0}}(d);this.cbs.forEach((t=>t.entityCbs.forEach((t=>t(n,o,c))))),l=l.updateEntities([c]);break;case t.WebsocketResponseType.TentativeIntent:const r=x(d,!1);this.cbs.forEach((t=>t.tentativeIntentCbs.forEach((t=>t(n,o,r))))),l=l.updateIntent(r);break;case t.WebsocketResponseType.Intent:const h=x(d,!0);this.cbs.forEach((t=>t.intentCbs.forEach((t=>t(n,o,h))))),l=l.updateIntent(h);break;case t.WebsocketResponseType.SegmentEnd:l=l.finalize()}c.set(o,l),this.activeContexts.set(n,c),this.logSegments&&console.info(l.toString()),this.cbs.forEach((t=>t.segmentChangeCbs.forEach((t=>t(l.toSegment())))))},this.handleWebsocketClosure=e=>{if(1e3===e.code)this.debug&&console.log("[Decoder]","Websocket closed",e);else{if(console.error("[Decoder]","Websocket closed due to error",e),void 0===this.deviceId)return void this.setState(t.DecoderState.Failed);this.setState(t.DecoderState.Disconnected),this.reconnect()}},this.logSegments=null!==(i=e.logSegments)&&void 0!==i&&i,this.appId=null!==(o=e.appId)&&void 0!==o?o:void 0,this.projectId=null!==(a=e.projectId)&&void 0!==a?a:void 0,this.sampleRate=null!==(d=e.sampleRate)&&void 0!==d?d:n,this.debug=null!==(c=e.debug)&&void 0!==c&&c,void 0!==this.appId&&void 0!==this.projectId)throw Error("[Decoder] You cannot use both appId and projectId at the same time");if(void 0===this.appId&&void 0===this.projectId)throw Error("[Decoder] Either an appId or a projectId is required");const u=null!==(l=e.apiUrl)&&void 0!==l?l:"https://api.speechly.com";this.apiUrl=function(t,e){const i=new URLSearchParams;return i.append("sampleRate",e.toString()),`${t}?${i.toString()}`}(u.replace("http","ws")+"/ws/v1",this.sampleRate),this.loginUrl=`${u}/login`,this.storage=null!==(r=e.storage)&&void 0!==r?r:new I,this.deviceId=this.storage.getOrSet("speechly-device-id",g),this.apiClient=new z,this.apiClient.onResponse(this.handleWebsocketResponse),this.apiClient.onClose(this.handleWebsocketClosure),(null===(h=e.connect)||void 0===h||h)&&this.connect()}getReconnectDelayMs(t){return 100*Math.pow(2,t)}sleep(t){return o(this,void 0,void 0,(function*(){return new Promise((e=>setTimeout(e,t)))}))}connect(){return o(this,void 0,void 0,(function*(){null===this.connectPromise&&(this.connectPromise=(()=>o(this,void 0,void 0,(function*(){const e=this.storage.get(f);if(null!=e&&T(e,this.projectId,this.appId,this.deviceId))this.authToken=e;else try{this.authToken=yield function(t,e,i,n,s=fetch,a=Date.now){var d;return o(this,void 0,void 0,(function*(){let o;o=void 0!==e?{projectId:e,deviceId:n}:{appId:i,deviceId:n};const c=yield s(t,{method:"POST",headers:{"Content-Type":"application/json"},body:JSON.stringify(o)}),l=yield c.json();if(200!==c.status)throw Error(null!==(d=l.error)&&void 0!==d?d:`Speechly API login request failed with ${c.status}`);if(void 0===l.access_token)throw Error("Invalid login response from Speechly API");if(!T(l.access_token,e,i,n,a))throw Error("Invalid token received from Speechly API");return l.access_token}))}(this.loginUrl,this.projectId,this.appId,this.deviceId),this.storage.set(f,this.authToken)}catch(e){throw this.setState(t.DecoderState.Failed),e}yield this.apiClient.initialize(this.apiUrl,this.authToken,this.sampleRate,this.debug),this.advanceState(t.DecoderState.Connected)})))()),yield this.connectPromise}))}adjustAudioProcessor(t){this.apiClient.adjustAudioProcessor(t)}close(){return o(this,void 0,void 0,(function*(){let e;try{yield this.apiClient.close()}catch(t){e=t.message}if(this.activeContexts.clear(),this.connectPromise=null,this.setState(t.DecoderState.Disconnected),void 0!==e)throw Error(e)}))}startStream(t){return o(this,void 0,void 0,(function*(){yield this.apiClient.startStream(t)}))}stopStream(){return o(this,void 0,void 0,(function*(){this.state===t.DecoderState.Active&&(yield this.stopContext()),yield this.apiClient.stopStream()}))}startContext(e){return o(this,void 0,void 0,(function*(){if(this.state===t.DecoderState.Failed)throw Error("[Decoder] startContext cannot be run in Failed state.");if(this.state<t.DecoderState.Connected)yield this.connect();else if(this.state>t.DecoderState.Connected)throw Error("[Decoder] Unable to complete startContext: Expected Connected state, but was in "+y(this.state)+".");let n;if(this.setState(t.DecoderState.Active),null!=this.projectId)n=yield this.apiClient.startContext(null==e?void 0:e.appId);else{if(null!=(null==e?void 0:e.appId)&&this.appId!==(null==e?void 0:e.appId))throw this.setState(t.DecoderState.Failed),i;n=yield this.apiClient.startContext()}if(this.state<t.DecoderState.Active)throw Error("[Decoder] Unable to complete startContext: Problem acquiring contextId");return n}))}sendAudio(t){this.apiClient.sendAudio(t)}stopContext(){return o(this,void 0,void 0,(function*(){if(this.state===t.DecoderState.Failed)throw Error("[Decoder] stopContext cannot be run in unrecovable error state.");if(this.state!==t.DecoderState.Active)throw Error("[Decoder] Unable to complete stopContext: Expected Active state, but was in "+y(this.state)+".");this.setState(t.DecoderState.Connected),yield this.sleep(this.contextStopDelay);try{return yield this.apiClient.stopContext()}catch(e){throw this.setState(t.DecoderState.Failed),e}}))}switchContext(e){return o(this,void 0,void 0,(function*(){if(this.state!==t.DecoderState.Active)throw Error("[Decoder] Unable to complete switchContext: Expected Active state, but was in "+y(this.state)+".");const i=yield this.apiClient.switchContext(e);this.activeContexts.set(i,new Map)}))}registerListener(t){this.cbs.push(t)}initAudioProcessor(t,e){return o(this,void 0,void 0,(function*(){this.sampleRate=t,yield this.apiClient.initAudioProcessor(t,e)}))}useSharedArrayBuffers(t,e){this.apiClient.postMessage({type:"SET_SHARED_ARRAY_BUFFERS",controlSAB:t,dataSAB:e})}reconnect(){return o(this,void 0,void 0,(function*(){this.debug&&console.log("[Decoder]","Reconnecting...",this.connectAttempt),this.connectPromise=null,this.connectAttempt<this.maxReconnectAttemptCount?(yield this.sleep(this.getReconnectDelayMs(this.connectAttempt++)),yield this.connect()):console.error("[Decoder] Maximum reconnect count reached, giving up automatic reconnect.")}))}advanceState(t){this.state>=t||this.setState(t)}setState(t){this.state!==t&&(this.debug&&console.log("[Decoder]",y(this.state),"->",y(t)),this.state=t,this.cbs.forEach((e=>{var i;return null===(i=e.stateChangeCbs)||void 0===i?void 0:i.forEach((e=>e(t)))})))}}t.BrowserClient=class{constructor(t){var e,i;this.debug=!1,this.initialized=!1,this.isStreaming=!1,this.isStreamAutoStarted=!1,this.active=!1,this.listeningPromise=null,this.stats={maxSignalEnergy:0,sentSamples:0};const n=window.navigator.mediaDevices.getSupportedConstraints();this.nativeResamplingSupported=!0===n.sampleRate,this.isMobileSafari=["iPad Simulator","iPhone Simulator","iPod Simulator","iPad","iPhone","iPod"].indexOf(navigator.platform)>=0||navigator.userAgent.includes("Mac")&&"ontouchend"in document,this.isSafari=this.isMobileSafari||void 0!==window.safari,this.useSAB=!this.isSafari,this.vadOptions=Object.assign(Object.assign({},b),t.vad),this.debug=null===(e=t.debug)||void 0===e||e,this.callbacks=new Z,this.callbacks.onVadStateChange.push(this.onVadStateChange.bind(this)),this.decoder=null!==(i=t.decoder)&&void 0!==i?i:new k(t),this.decoder.registerListener(this.callbacks)}onVadStateChange(t){var e;this.debug&&console.log("[BrowserClient]","onVadStateChange",t),(null===(e=this.vadOptions)||void 0===e?void 0:e.controlListening)&&(t?this.active||this.start():this.active&&this.stop())}initialize(t){var i,s;return o(this,void 0,void 0,(function*(){if(!this.initialized){this.initialized=!0,this.debug&&console.log("[BrowserClient]","initializing"),yield this.decoder.connect();try{const t={};if(this.nativeResamplingSupported&&(t.sampleRate=n),void 0!==window.webkitAudioContext)try{this.audioContext=new window.webkitAudioContext(t)}catch(t){this.debug&&console.log("[BrowserClient]","creating audioContext without samplerate conversion",t),this.audioContext=new window.webkitAudioContext}else this.audioContext=new window.AudioContext(t),void 0!==window.webkitAudioContext&&(yield this.audioContext.resume())}catch(t){throw e}if(this.isSafari||void 0===window.AudioWorkletNode){if(this.debug&&console.log("[BrowserClient]","using ScriptProcessorNode"),void 0!==window.webkitAudioContext){const t=this.audioContext.sampleRate/n,e=4096*Math.pow(2,Math.ceil(Math.log(t)/Math.log(2)));this.audioProcessor=this.audioContext.createScriptProcessor(e,1,1)}else this.audioProcessor=this.audioContext.createScriptProcessor(void 0,1,1);this.audioProcessor.connect(this.audioContext.destination),this.audioProcessor.addEventListener("audioprocess",(t=>{this.handleAudio(t.inputBuffer.getChannelData(0))}))}else{this.debug&&console.log("[BrowserClient]","using AudioWorkletNode");const t=new Blob(["\n// Indices for the Control SAB.\nconst CONTROL = {\n 'WRITE_INDEX': 0,\n 'FRAMES_AVAILABLE': 1,\n 'LOCK': 2,\n};\n\nclass SpeechlyProcessor extends AudioWorkletProcessor {\n constructor() {\n super();\n\n this._initialized = false;\n this.debug = false;\n this.port.onmessage = this._initialize.bind(this);\n }\n\n _initialize(event) {\n this.controlSAB = new Int32Array(event.data.controlSAB);\n this.dataSAB = new Float32Array(event.data.dataSAB);\n this.debug = event.data.debug;\n if (this.debug) {\n console.log('[BrowserClient AudioWorkletNode]', 'initializing audioworklet');\n }\n this.sharedBufferSize = this.dataSAB.length;\n this.buffer = new Float32Array(0);\n this._initialized = true;\n }\n\n _transferDataToSharedBuffer(data) {\n this.controlSAB[CONTROL.LOCK] = 1;\n let inputWriteIndex = this.controlSAB[CONTROL.WRITE_INDEX];\n if (this.controlSAB[CONTROL.FRAMES_AVAILABLE] > 0) {\n if (inputWriteIndex + data.length > this.sharedBufferSize) {\n // console.log('buffer overflow')\n inputWriteIndex = 0;\n }\n }\n this.dataSAB.set(data, inputWriteIndex);\n this.controlSAB[CONTROL.WRITE_INDEX] = inputWriteIndex + data.length;\n this.controlSAB[CONTROL.FRAMES_AVAILABLE] = inputWriteIndex + data.length;\n this.controlSAB[CONTROL.LOCK] = 0;\n }\n\n _pushData(data) {\n if (this.debug) {\n const signalEnergy = getStandardDeviation(data)\n this.port.postMessage({\n type: 'STATS',\n signalEnergy: signalEnergy,\n samples: data.length,\n });\n }\n\n if (this.buffer.length > this.sharedBufferSize) {\n const dataToTransfer = this.buffer.subarray(0, this.sharedBufferSize);\n this._transferDataToSharedBuffer(dataToTransfer);\n this.buffer = this.buffer.subarray(this.sharedBufferSize);\n }\n let concat = new Float32Array(this.buffer.length + data.length);\n concat.set(this.buffer);\n concat.set(data, this.buffer.length);\n this.buffer = concat;\n }\n\n process(inputs, outputs, parameters) {\n const inputChannelData = inputs[0][0];\n if (inputChannelData !== undefined) {\n if (this.controlSAB && this.dataSAB) {\n this._pushData(inputChannelData);\n } else {\n this.port.postMessage({\n type: 'DATA',\n frames: inputChannelData\n });\n }\n }\n\n return true;\n }\n}\n\nfunction getStandardDeviation(array) {\n const n = array.length\n const mean = array.reduce((a, b) => a + b) / n\n return Math.sqrt(array.map(x => Math.pow(x - mean, 2)).reduce((a, b) => a + b) / n)\n}\n\nregisterProcessor('speechly-worklet', SpeechlyProcessor);\n"],{type:"text/javascript"}),e=window.URL.createObjectURL(t);if(yield this.audioContext.audioWorklet.addModule(e),this.speechlyNode=new AudioWorkletNode(this.audioContext,"speechly-worklet"),this.speechlyNode.connect(this.audioContext.destination),this.useSAB&&void 0!==window.SharedArrayBuffer){this.debug&&console.log("[BrowserClient]","using SharedArrayBuffer");const t=new window.SharedArrayBuffer(4*Int32Array.BYTES_PER_ELEMENT),e=new window.SharedArrayBuffer(1024*Float32Array.BYTES_PER_ELEMENT);this.decoder.useSharedArrayBuffers(t,e),this.speechlyNode.port.postMessage({type:"SET_SHARED_ARRAY_BUFFERS",controlSAB:t,dataSAB:e,debug:this.debug})}else this.debug&&console.log("[BrowserClient]","can not use SharedArrayBuffer");this.speechlyNode.port.onmessage=t=>{switch(t.data.type){case"STATS":t.data.signalEnergy>this.stats.maxSignalEnergy&&(this.stats.maxSignalEnergy=t.data.signalEnergy),this.stats.sentSamples+=parseInt(t.data.samples);break;case"DATA":this.handleAudio(t.data.frames)}}}this.debug&&console.log("[BrowserClient]","audioContext sampleRate is",null===(i=this.audioContext)||void 0===i?void 0:i.sampleRate),yield this.decoder.initAudioProcessor(null===(s=this.audioContext)||void 0===s?void 0:s.sampleRate,this.vadOptions),this.vadOptions&&(yield this.startStream()),(null==t?void 0:t.mediaStream)&&(yield this.attach(null==t?void 0:t.mediaStream))}}))}adjustAudioProcessor(t){this.decoder.adjustAudioProcessor(t)}close(){var t,e,i;return o(this,void 0,void 0,(function*(){yield this.detach(),null!==this.speechlyNode&&(null===(t=this.speechlyNode)||void 0===t||t.port.close(),null===(e=this.speechlyNode)||void 0===e||e.disconnect()),void 0!==this.audioProcessor&&(null===(i=this.audioProcessor)||void 0===i||i.disconnect()),yield this.decoder.close(),this.initialized=!1}))}attach(t){var e,i,n,s,a,d;return o(this,void 0,void 0,(function*(){if(yield this.initialize(),yield this.detach(),this.stream=null===(e=this.audioContext)||void 0===e?void 0:e.createMediaStreamSource(t),"running"!==(null===(i=this.audioContext)||void 0===i?void 0:i.state)&&(this.debug&&console.log("[BrowserClient]","audioContext resume required, state is",null===(n=this.audioContext)||void 0===n?void 0:n.state),yield null===(s=this.audioContext)||void 0===s?void 0:s.resume()),this.speechlyNode)null===(a=this.stream)||void 0===a||a.connect(this.speechlyNode);else{if(!this.audioProcessor)throw Error("[BrowserClient] cannot attach to mediaStream, not initialized");null===(d=this.stream)||void 0===d||d.connect(this.audioProcessor)}}))}detach(){return o(this,void 0,void 0,(function*(){this.active&&(yield this.stop()),this.stream&&(this.stream.disconnect(),this.stream=void 0)}))}uploadAudioData(t,e){var i,n,s;return o(this,void 0,void 0,(function*(){yield this.initialize();const o=yield null===(i=this.audioContext)||void 0===i?void 0:i.decodeAudioData(t);if(void 0===o)throw Error("Could not decode audioData");const a=o.getChannelData(0);if(o.numberOfChannels>1){const t=o.getChannelData(1);for(let e=0;e<a.length;e++)a[e]=(a[e]+t[e])/2}let d;yield this.startStream({immediate:!0});const c=(null===(n=this.vadOptions)||void 0===n?void 0:n.enabled)&&(null===(s=this.vadOptions)||void 0===s?void 0:s.controlListening);let l;d=c?"multiple context ids":yield this.start(e);for(let t=0;t<a.length;t+=16e3){const e=t+16e3;l=e>a.length?a.slice(t):a.slice(t,e),this.handleAudio(l)}return c||(yield this.stop()),yield this.stopStream(),d}))}startStream(t){return o(this,void 0,void 0,(function*(){yield this.decoder.startStream(t),this.isStreaming=!0}))}stopStream(){return o(this,void 0,void 0,(function*(){yield this.decoder.stopStream(),this.isStreaming=!1,this.isStreamAutoStarted=!1}))}queueTask(t){return o(this,void 0,void 0,(function*(){const e=this.listeningPromise;return this.listeningPromise=(()=>o(this,void 0,void 0,(function*(){return yield e,t()})))(),this.listeningPromise}))}start(t){return o(this,void 0,void 0,(function*(){return yield this.queueTask((()=>o(this,void 0,void 0,(function*(){yield this.initialize(),this.isStreaming||(yield this.startStream(),this.isStreamAutoStarted=!0);const e=this.decoder.startContext(t);return this.active=!0,e}))))}))}stop(){return o(this,void 0,void 0,(function*(){return yield this.queueTask((()=>o(this,void 0,void 0,(function*(){let t=null;try{t=yield this.decoder.stopContext(),this.isStreaming&&this.isStreamAutoStarted&&(yield this.stopStream()),0===this.stats.sentSamples&&console.warn("[BrowserClient]","audioContext contained no audio data")}catch(t){console.warn("[BrowserClient]","stop() failed",t)}finally{this.active=!1,this.stats.sentSamples=0}return t}))))}))}handleAudio(t){this.isStreaming&&(this.stats.sentSamples+=t.length,this.decoder.sendAudio(t),console.log("handleAudio"))}isActive(){return this.active}onSegmentChange(t){this.callbacks.segmentChangeCbs.push(t)}onTranscript(t){this.callbacks.transcriptCbs.push(t)}onEntity(t){this.callbacks.entityCbs.push(t)}onIntent(t){this.callbacks.intentCbs.push(t)}onTentativeTranscript(t){this.callbacks.tentativeTranscriptCbs.push(t)}onTentativeEntities(t){this.callbacks.tentativeEntityCbs.push(t)}onTentativeIntent(t){this.callbacks.tentativeIntentCbs.push(t)}onStateChange(t){this.callbacks.stateChangeCbs.push(t)}},t.BrowserMicrophone=class{constructor(){this.muted=!1,this.initialized=!1;try{const t=window.navigator.mediaDevices.getSupportedConstraints();this.nativeResamplingSupported=!0===t.sampleRate,this.autoGainControlSupported=!0===t.autoGainControl}catch(t){this.nativeResamplingSupported=!1,this.autoGainControlSupported=!1}}initialize(){var t;return o(this,void 0,void 0,(function*(){if(this.initialized)return;if(void 0===(null===(t=window.navigator)||void 0===t?void 0:t.mediaDevices))throw e;const i={video:!1};this.nativeResamplingSupported||this.autoGainControlSupported?i.audio={sampleRate:n,autoGainControl:this.autoGainControlSupported}:i.audio=!0;try{this.mediaStream=yield window.navigator.mediaDevices.getUserMedia(i)}catch(t){throw console.error(t),c}this.initialized=!0,this.muted=!0}))}close(){return o(this,void 0,void 0,(function*(){if(!this.initialized)throw a;this.muted=!0;this.mediaStream.getTracks().forEach((t=>t.stop())),this.mediaStream=void 0,this.initialized=!1}))}isRecording(){return!this.muted}},t.CloudDecoder=k,t.DefaultSampleRate=n,t.ErrAlreadyInitialized=d,t.ErrAppIdChangeWithoutProjectLogin=i,t.ErrDeviceNotSupported=e,t.ErrKeyNotFound=p,t.ErrNoAudioConsent=c,t.ErrNoStorageSupport=u,t.ErrNotInitialized=a,t.EventCallbacks=Z,t.SegmentState=s,t.VadDefaultOptions=b,t.stateToString=y,Object.defineProperty(t,"__esModule",{value:!0})})); | ||
| //# sourceMappingURL=speechly.umd.min.js.map |
@@ -1,2 +0,2 @@ | ||
| import { DecoderState, DecoderOptions, ContextOptions } from './types'; | ||
| import { DecoderState, DecoderOptions, ContextOptions, AudioProcessorParameters } from './types'; | ||
| import { Segment, Word, Entity, Intent } from '../speechly'; | ||
@@ -17,3 +17,6 @@ /** | ||
| private readonly callbacks; | ||
| private readonly vadOptions?; | ||
| private initialized; | ||
| private isStreaming; | ||
| private isStreamAutoStarted; | ||
| private active; | ||
@@ -23,2 +26,3 @@ private speechlyNode?; | ||
| private stream?; | ||
| private listeningPromise; | ||
| private stats; | ||
@@ -31,6 +35,5 @@ /** | ||
| constructor(options: DecoderOptions); | ||
| onVadStateChange(active: boolean): void; | ||
| /** | ||
| * Create an AudioContext for resampling audio. | ||
| * | ||
| * @param options - shorthand for attaching to existing mediaStream | ||
| */ | ||
@@ -41,2 +44,7 @@ initialize(options?: { | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void; | ||
| /** | ||
| * Closes the client, detaching from any audio source and disconnecting any audio | ||
@@ -64,2 +72,14 @@ * processors. | ||
| /** | ||
| * If the application starts and resumes the flow of audio, `startStream` should be called at start of a continuous audio stream. | ||
| * If you're using VAD that controls starting and stopping audio contexts automatically, you can pass optional inference time options. | ||
| * It resets the stream sample counters and history. | ||
| */ | ||
| startStream(defaultContextOptions?: ContextOptions): Promise<void>; | ||
| /** | ||
| * If the application starts and resumes the flow of audio, `stopStream` should be called at the end of a continuous audio stream. | ||
| * It ensures that all of the internal audio buffers are flushed for processing. | ||
| */ | ||
| stopStream(): Promise<void>; | ||
| private queueTask; | ||
| /** | ||
| * Starts a new audio context, returning it's id to use for matching received responses. | ||
@@ -66,0 +86,0 @@ * If an active context already exists, an error is thrown. |
@@ -1,2 +0,2 @@ | ||
| import { DecoderOptions, DecoderState, EventCallbacks, ContextOptions } from './types'; | ||
| import { DecoderOptions, DecoderState, EventCallbacks, ContextOptions, VadOptions, AudioProcessorParameters } from './types'; | ||
| /** | ||
@@ -23,3 +23,2 @@ * A client for Speechly Spoken Language Understanding (SLU) API. The client handles initializing the websocket | ||
| private connectPromise; | ||
| private listeningPromise; | ||
| private authToken?; | ||
@@ -40,5 +39,12 @@ private readonly cbs; | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void; | ||
| /** | ||
| * Closes the client by closing the API connection and disabling the microphone. | ||
| */ | ||
| close(): Promise<void>; | ||
| startStream(defaultContextOptions?: ContextOptions): Promise<void>; | ||
| stopStream(): Promise<void>; | ||
| /** | ||
@@ -64,5 +70,6 @@ * Starts a new SLU context by sending a start context event to the API. | ||
| registerListener(listener: EventCallbacks): void; | ||
| setSampleRate(sr: number): Promise<void>; | ||
| initAudioProcessor(sampleRate: number, vadOptions?: VadOptions): Promise<void>; | ||
| useSharedArrayBuffers(controlSAB: any, dataSAB: any): void; | ||
| private readonly handleWebsocketResponse; | ||
| private readonly handleSegmentUpdate; | ||
| private readonly handleWebsocketClosure; | ||
@@ -69,0 +76,0 @@ private reconnect; |
@@ -51,4 +51,66 @@ import { Segment, Word, Entity, Intent } from '../speechly'; | ||
| storage?: Storage; | ||
| /** | ||
| * Enable voice activity detection (VAD) configuration overrides | ||
| */ | ||
| vad?: Partial<VadOptions>; | ||
| } | ||
| /** | ||
| * Options for voice activity detection (VAD) | ||
| * @public | ||
| */ | ||
| export interface VadOptions { | ||
| /** | ||
| * Run energy analysis | ||
| */ | ||
| enabled: boolean; | ||
| /** | ||
| * Signal-to-noise energy ratio needed for frame to be 'loud'. | ||
| * Default: 3.0 [dB]. | ||
| */ | ||
| signalToNoiseDb: number; | ||
| /** | ||
| * Energy threshold - below this won't trigger activation. | ||
| * Range: -90.0f to 0.0f [dB]. Default: -24 [dB]. | ||
| */ | ||
| noiseGateDb: number; | ||
| /** | ||
| * Rate of background noise learn. Defined as duration in which background noise energy is moved halfway towards current frame's energy. | ||
| * Range: 0, 5000 [ms]. Default: 400 [ms]. | ||
| */ | ||
| noiseLearnHalftimeMillis: number; | ||
| /** | ||
| * Number of past frames analyzed for energy threshold VAD. Should be less or equal than HistoryFrames. | ||
| * Range: 1 to 32 [frames]. Default: 5 [frames]. | ||
| */ | ||
| signalSearchFrames: number; | ||
| /** | ||
| * Minimum 'signal' to 'silent' frame ratio in history to activate 'IsSignalDetected' | ||
| * Range: 0.0 to 1.0. Default: 0.7. | ||
| */ | ||
| signalActivation: number; | ||
| /** | ||
| * Maximum 'signal' to 'silent' frame ratio in history to inactivate 'IsSignalDetected'. Only evaluated when the sustain period is over. | ||
| * Range: 0.0 to 1.0. Default: 0.2. | ||
| */ | ||
| signalRelease: number; | ||
| /** | ||
| * Duration to keep 'IsSignalDetected' active. Renewed as long as VADActivation is holds true. | ||
| * Range: 0 to 8000 [ms]. Default: 3000 [ms]. | ||
| */ | ||
| signalSustainMillis: number; | ||
| /** | ||
| * Enable listening control if you want to use IsSignalDetected to control SLU start / stop. | ||
| * Default: true. | ||
| */ | ||
| controlListening: boolean; | ||
| } | ||
| export interface AudioProcessorParameters { | ||
| vad?: Partial<VadOptions>; | ||
| } | ||
| /** | ||
| * Default options for voice activity detection (VAD) | ||
| * @public | ||
| */ | ||
| export declare const VadDefaultOptions: VadOptions; | ||
| /** | ||
| * All possible states of a Speechly API client. Failed state is non-recoverable. | ||
@@ -80,2 +142,3 @@ * It is also possible to use arithmetics for state comparison, e.g. `if (state < speechly.ClientState.Disconnected)`, | ||
| contextStoppedCbs: Array<(contextId: string) => void>; | ||
| onVadStateChange: Array<(active: boolean) => void>; | ||
| } | ||
@@ -88,2 +151,7 @@ /** | ||
| appId?: string; | ||
| /** | ||
| * BrowserClient.uploadAudioData internally uses this to set audio worker | ||
| * to ‘immediate audio processor’ mode where it can control start/stop context at its own pace. | ||
| */ | ||
| immediate?: boolean; | ||
| } |
@@ -10,3 +10,3 @@ /** | ||
| private readonly nativeResamplingSupported; | ||
| private readonly autoGainControl; | ||
| private readonly autoGainControlSupported; | ||
| mediaStream?: MediaStream; | ||
@@ -13,0 +13,0 @@ constructor(); |
@@ -0,1 +1,2 @@ | ||
| import { AudioProcessorParameters, ContextOptions, VadOptions } from '../client'; | ||
| /** | ||
@@ -9,3 +10,3 @@ * The interface for response returned by WebSocket client. | ||
| */ | ||
| type: WebsocketResponseType; | ||
| type: WebsocketResponseType | WorkerSignal; | ||
| /** | ||
@@ -33,5 +34,2 @@ * Audio context ID. | ||
| export declare enum WebsocketResponseType { | ||
| Opened = "WEBSOCKET_OPEN", | ||
| Closed = "WEBSOCKET_CLOSED", | ||
| SourceSampleRateSetSuccess = "SOURCE_SAMPLE_RATE_SET_SUCCESS", | ||
| Started = "started", | ||
@@ -48,2 +46,30 @@ Stopped = "stopped", | ||
| /** | ||
| * Messages from worker to controller | ||
| * @public | ||
| */ | ||
| export declare enum WorkerSignal { | ||
| Opened = "WEBSOCKET_OPEN", | ||
| Closed = "WEBSOCKET_CLOSED", | ||
| AudioProcessorReady = "SOURCE_SAMPLE_RATE_SET_SUCCESS", | ||
| VadSignalHigh = "VadSignalHigh", | ||
| VadSignalLow = "VadSignalLow" | ||
| } | ||
| /** | ||
| * Messages from controller to worker | ||
| * @public | ||
| */ | ||
| export declare enum ControllerSignal { | ||
| connect = "connect", | ||
| initAudioProcessor = "initAudioProcessor", | ||
| adjustAudioProcessor = "adjustAudioProcessor", | ||
| SET_SHARED_ARRAY_BUFFERS = "SET_SHARED_ARRAY_BUFFERS", | ||
| CLOSE = "CLOSE", | ||
| START_CONTEXT = "START_CONTEXT", | ||
| SWITCH_CONTEXT = "SWITCH_CONTEXT", | ||
| STOP_CONTEXT = "STOP_CONTEXT", | ||
| AUDIO = "AUDIO", | ||
| startStream = "startStream", | ||
| stopStream = "stopStream" | ||
| } | ||
| /** | ||
| * Transcript response payload. | ||
@@ -178,4 +204,9 @@ * @public | ||
| */ | ||
| setSourceSampleRate(sourceSampleRate: number): Promise<void>; | ||
| initAudioProcessor(sourceSampleRate: number, vadOptions?: VadOptions): Promise<void>; | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void; | ||
| /** | ||
| * Closes the client. | ||
@@ -215,2 +246,4 @@ * | ||
| postMessage(message: Object): void; | ||
| startStream(defaultContextOptions?: ContextOptions): Promise<void>; | ||
| stopStream(): Promise<void>; | ||
| } |
| import { APIClient, ResponseCallback, CloseCallback } from './types'; | ||
| import { AudioProcessorParameters, ContextOptions, VadOptions } from '../client'; | ||
| export declare class WebWorkerController implements APIClient { | ||
@@ -14,4 +15,11 @@ private readonly worker; | ||
| initialize(apiUrl: string, authToken: string, targetSampleRate: number, debug: boolean): Promise<void>; | ||
| setSourceSampleRate(sourceSampleRate: number): Promise<void>; | ||
| initAudioProcessor(sourceSampleRate: number, vadOptions?: VadOptions): Promise<void>; | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void; | ||
| close(): Promise<void>; | ||
| startStream(defaultContextOptions?: ContextOptions): Promise<void>; | ||
| stopStream(): Promise<void>; | ||
| startContext(appId?: string): Promise<string>; | ||
@@ -18,0 +26,0 @@ stopContext(): Promise<string>; |
@@ -1,2 +0,41 @@ | ||
| declare const _default: "/**\n * Known WebSocket response types.\n * @public\n */\nvar WebsocketResponseType;\n(function (WebsocketResponseType) {\n WebsocketResponseType[\"Opened\"] = \"WEBSOCKET_OPEN\";\n WebsocketResponseType[\"SourceSampleRateSetSuccess\"] = \"SOURCE_SAMPLE_RATE_SET_SUCCESS\";\n WebsocketResponseType[\"Started\"] = \"started\";\n WebsocketResponseType[\"Stopped\"] = \"stopped\";\n})(WebsocketResponseType || (WebsocketResponseType = {}));\nvar CONTROL = {\n WRITE_INDEX: 0,\n FRAMES_AVAILABLE: 1,\n LOCK: 2\n};\nvar WebsocketClient = /** @class */ (function () {\n function WebsocketClient(ctx) {\n var _this = this;\n this.isContextStarted = false;\n this.isStartContextConfirmed = false;\n this.shouldResendLastFramesSent = false;\n this.buffer = new Float32Array(0);\n this.lastFramesSent = new Int16Array(0); // to re-send after switch context\n this.debug = false;\n this.initialized = false;\n // WebSocket's close handler, called e.g. when\n // - normal close (code 1000)\n // - network unreachable or unable to (re)connect (code 1006)\n // List of CloseEvent.code values: https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent/code\n this.onWebsocketClose = function (event) {\n if (_this.debug) {\n console.log('[WebSocketClient]', 'onWebsocketClose');\n }\n _this.websocket.removeEventListener('open', _this.onWebsocketOpen);\n _this.websocket.removeEventListener('message', _this.onWebsocketMessage);\n _this.websocket.removeEventListener('error', _this.onWebsocketError);\n _this.websocket.removeEventListener('close', _this.onWebsocketClose);\n _this.websocket = undefined;\n _this.workerCtx.postMessage({\n type: 'WEBSOCKET_CLOSED',\n code: event.code,\n reason: event.reason,\n wasClean: event.wasClean\n });\n };\n this.onWebsocketOpen = function (_event) {\n if (_this.debug) {\n console.log('[WebSocketClient]', 'websocket opened');\n }\n if (_this.isContextStarted && !_this.isStartContextConfirmed) {\n _this.send(_this.outbox);\n }\n _this.workerCtx.postMessage({ type: 'WEBSOCKET_OPEN' });\n };\n this.onWebsocketError = function (_event) {\n if (_this.debug) {\n console.log('[WebSocketClient]', 'websocket error');\n }\n };\n this.onWebsocketMessage = function (event) {\n var response;\n try {\n response = JSON.parse(event.data);\n }\n catch (e) {\n console.error('[WebSocketClient]', 'error parsing response from the server:', e);\n return;\n }\n if (response.type === WebsocketResponseType.Started) {\n _this.isStartContextConfirmed = true;\n if (_this.shouldResendLastFramesSent) {\n _this.resendLastFrames();\n _this.shouldResendLastFramesSent = false;\n }\n }\n _this.workerCtx.postMessage(response);\n };\n this.workerCtx = ctx;\n }\n WebsocketClient.prototype.init = function (apiUrl, authToken, targetSampleRate, debug) {\n this.debug = debug;\n if (this.debug) {\n console.log('[WebSocketClient]', 'initialize worker');\n }\n this.apiUrl = apiUrl;\n this.authToken = authToken;\n this.targetSampleRate = targetSampleRate;\n this.initialized = true;\n this.isContextStarted = false;\n this.connect(0);\n };\n WebsocketClient.prototype.setSourceSampleRate = function (sourceSampleRate) {\n this.sourceSampleRate = sourceSampleRate;\n this.resampleRatio = this.sourceSampleRate / this.targetSampleRate;\n if (this.debug) {\n console.log('[WebSocketClient]', 'resampleRatio', this.resampleRatio);\n }\n if (this.resampleRatio > 1) {\n this.filter = generateFilter(this.sourceSampleRate, this.targetSampleRate, 127);\n }\n this.workerCtx.postMessage({ type: 'SOURCE_SAMPLE_RATE_SET_SUCCESS' });\n if (isNaN(this.resampleRatio)) {\n throw Error(\"resampleRatio is NaN source rate is \".concat(this.sourceSampleRate, \" and target rate is \").concat(this.targetSampleRate));\n }\n };\n WebsocketClient.prototype.setSharedArrayBuffers = function (controlSAB, dataSAB) {\n this.controlSAB = new Int32Array(controlSAB);\n this.dataSAB = new Float32Array(dataSAB);\n var audioHandleInterval = this.dataSAB.length / 32; // ms\n if (this.debug) {\n console.log('[WebSocketClient]', 'Audio handle interval', audioHandleInterval, 'ms');\n }\n setInterval(this.sendAudioFromSAB.bind(this), audioHandleInterval);\n };\n WebsocketClient.prototype.connect = function (timeout) {\n if (timeout === void 0) { timeout = 1000; }\n if (this.debug) {\n console.log('[WebSocketClient]', 'connect in ', timeout / 1000, 'sec');\n }\n setTimeout(this.initializeWebsocket.bind(this), timeout);\n };\n WebsocketClient.prototype.initializeWebsocket = function () {\n if (this.debug) {\n console.log('[WebSocketClient]', 'connecting to ', this.apiUrl);\n }\n this.websocket = new WebSocket(this.apiUrl, this.authToken);\n this.websocket.addEventListener('open', this.onWebsocketOpen);\n this.websocket.addEventListener('message', this.onWebsocketMessage);\n this.websocket.addEventListener('error', this.onWebsocketError);\n this.websocket.addEventListener('close', this.onWebsocketClose);\n };\n WebsocketClient.prototype.isOpen = function () {\n return this.websocket !== undefined && this.websocket.readyState === this.websocket.OPEN;\n };\n WebsocketClient.prototype.resendLastFrames = function () {\n if (this.lastFramesSent.length > 0) {\n this.send(this.lastFramesSent);\n this.lastFramesSent = new Int16Array(0);\n }\n };\n WebsocketClient.prototype.sendAudio = function (audioChunk) {\n if (!this.isContextStarted) {\n return;\n }\n if (audioChunk.length > 0) {\n if (this.resampleRatio > 1) {\n // Downsampling\n this.send(this.downsample(audioChunk));\n }\n else {\n this.send(float32ToInt16(audioChunk));\n }\n }\n };\n WebsocketClient.prototype.sendAudioFromSAB = function () {\n if (!this.isContextStarted) {\n this.controlSAB[CONTROL.FRAMES_AVAILABLE] = 0;\n this.controlSAB[CONTROL.WRITE_INDEX] = 0;\n return;\n }\n if (this.controlSAB == undefined) {\n return;\n }\n var framesAvailable = this.controlSAB[CONTROL.FRAMES_AVAILABLE];\n var lock = this.controlSAB[CONTROL.LOCK];\n if (lock == 0 && framesAvailable > 0) {\n var data = this.dataSAB.subarray(0, framesAvailable);\n this.controlSAB[CONTROL.FRAMES_AVAILABLE] = 0;\n this.controlSAB[CONTROL.WRITE_INDEX] = 0;\n if (data.length > 0) {\n var frames_1;\n if (this.resampleRatio > 1) {\n frames_1 = this.downsample(data);\n }\n else {\n frames_1 = float32ToInt16(data);\n }\n this.send(frames_1);\n // 16000 per second, 1000 in 100 ms\n // save last 250 ms\n if (this.lastFramesSent.length > 1024 * 4) {\n this.lastFramesSent = frames_1;\n }\n else {\n var concat = new Int16Array(this.lastFramesSent.length + frames_1.length);\n concat.set(this.lastFramesSent);\n concat.set(frames_1, this.lastFramesSent.length);\n this.lastFramesSent = concat;\n }\n }\n }\n };\n WebsocketClient.prototype.startContext = function (appId) {\n if (this.isContextStarted) {\n console.error('[WebSocketClient]', \"can't start context: active context exists\");\n return;\n }\n this.isContextStarted = true;\n this.isStartContextConfirmed = false;\n if (appId !== undefined) {\n this.outbox = JSON.stringify({ event: 'start', appId: appId });\n }\n else {\n this.outbox = JSON.stringify({ event: 'start' });\n }\n this.send(this.outbox);\n };\n WebsocketClient.prototype.stopContext = function () {\n if (!this.websocket) {\n throw Error('WebSocket is undefined');\n }\n if (!this.isContextStarted) {\n console.error('[WebSocketClient]', \"can't stop context: no active context\");\n return;\n }\n this.isContextStarted = false;\n this.isStartContextConfirmed = false;\n var StopEventJSON = JSON.stringify({ event: 'stop' });\n this.send(StopEventJSON);\n };\n WebsocketClient.prototype.switchContext = function (newAppId) {\n if (!this.websocket) {\n throw Error('WebSocket is undefined');\n }\n if (!this.isContextStarted) {\n console.error('[WebSocketClient]', \"can't switch context: no active context\");\n return;\n }\n if (newAppId == undefined) {\n console.error('[WebSocketClient]', \"can't switch context: new app id is undefined\");\n return;\n }\n this.isStartContextConfirmed = false;\n var StopEventJSON = JSON.stringify({ event: 'stop' });\n this.send(StopEventJSON);\n this.shouldResendLastFramesSent = true;\n this.send(JSON.stringify({ event: 'start', appId: newAppId }));\n };\n WebsocketClient.prototype.closeWebsocket = function (websocketCode, reason) {\n if (websocketCode === void 0) { websocketCode = 1005; }\n if (reason === void 0) { reason = 'No Status Received'; }\n if (this.debug) {\n console.log('[WebSocketClient]', 'Websocket closing');\n }\n if (!this.websocket) {\n throw Error('WebSocket is undefined');\n }\n this.websocket.close(websocketCode, reason);\n };\n WebsocketClient.prototype.downsample = function (input) {\n var inputBuffer = new Float32Array(this.buffer.length + input.length);\n inputBuffer.set(this.buffer, 0);\n inputBuffer.set(input, this.buffer.length);\n var outputLength = Math.ceil((inputBuffer.length - this.filter.length) / this.resampleRatio);\n var outputBuffer = new Int16Array(outputLength);\n for (var i = 0; i < outputLength; i++) {\n var offset = Math.round(this.resampleRatio * i);\n var val = 0.0;\n for (var j = 0; j < this.filter.length; j++) {\n val += inputBuffer[offset + j] * this.filter[j];\n }\n outputBuffer[i] = val * (val < 0 ? 0x8000 : 0x7fff);\n }\n var remainingOffset = Math.round(this.resampleRatio * outputLength);\n if (remainingOffset < inputBuffer.length) {\n this.buffer = inputBuffer.subarray(remainingOffset);\n }\n else {\n this.buffer = new Float32Array(0);\n }\n return outputBuffer;\n };\n WebsocketClient.prototype.send = function (data) {\n if (this.isOpen()) {\n try {\n this.websocket.send(data);\n }\n catch (error) {\n console.log('[WebSocketClient]', 'server connection error', error);\n }\n }\n };\n return WebsocketClient;\n}());\nvar ctx = self;\nvar websocketClient = new WebsocketClient(ctx);\nctx.onmessage = function (e) {\n switch (e.data.type) {\n case 'INIT':\n websocketClient.init(e.data.apiUrl, e.data.authToken, e.data.targetSampleRate, e.data.debug);\n break;\n case 'SET_SOURCE_SAMPLE_RATE':\n websocketClient.setSourceSampleRate(e.data.sourceSampleRate);\n break;\n case 'SET_SHARED_ARRAY_BUFFERS':\n websocketClient.setSharedArrayBuffers(e.data.controlSAB, e.data.dataSAB);\n break;\n case 'CLOSE':\n websocketClient.closeWebsocket(1000, 'Close requested by client');\n break;\n case 'START_CONTEXT':\n websocketClient.startContext(e.data.appId);\n break;\n case 'SWITCH_CONTEXT':\n websocketClient.switchContext(e.data.appId);\n break;\n case 'STOP_CONTEXT':\n websocketClient.stopContext();\n break;\n case 'AUDIO':\n websocketClient.sendAudio(e.data.payload);\n break;\n default:\n console.log('WORKER', e);\n }\n};\nfunction float32ToInt16(buffer) {\n var buf = new Int16Array(buffer.length);\n for (var l = 0; l < buffer.length; l++) {\n buf[l] = buffer[l] * (buffer[l] < 0 ? 0x8000 : 0x7fff);\n }\n return buf;\n}\nfunction generateFilter(sourceSampleRate, targetSampleRate, length) {\n if (length % 2 === 0) {\n throw Error('Filter length must be odd');\n }\n var cutoff = targetSampleRate / 2;\n var filter = new Float32Array(length);\n var sum = 0;\n for (var i = 0; i < length; i++) {\n var x = sinc(((2 * cutoff) / sourceSampleRate) * (i - (length - 1) / 2));\n sum += x;\n filter[i] = x;\n }\n for (var i = 0; i < length; i++) {\n filter[i] = filter[i] / sum;\n }\n return filter;\n}\nfunction sinc(x) {\n if (x === 0.0) {\n return 1.0;\n }\n var piX = Math.PI * x;\n return Math.sin(piX) / piX;\n}\n"; | ||
| export default _default; | ||
| import { AudioProcessorParameters, ContextOptions, VadOptions } from '../client'; | ||
| declare class WebsocketClient { | ||
| private readonly workerCtx; | ||
| private targetSampleRate; | ||
| private isContextStarted; | ||
| private websocket?; | ||
| private audioProcessor?; | ||
| private controlSAB?; | ||
| private dataSAB?; | ||
| private readonly frameMillis; | ||
| private readonly outputAudioFrame; | ||
| private debug; | ||
| private defaultContextOptions?; | ||
| constructor(ctx: Worker); | ||
| connect(apiUrl: string, authToken: string, targetSampleRate: number, debug: boolean): void; | ||
| initAudioProcessor(sourceSampleRate: number, vadOptions?: VadOptions): void; | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void; | ||
| setSharedArrayBuffers(controlSAB: number, dataSAB: number): void; | ||
| startStream(defaultContextOptions?: ContextOptions): void; | ||
| stopStream(): void; | ||
| /** | ||
| * Processes and sends audio | ||
| * @param audioChunk - audio data to process | ||
| */ | ||
| processAudio(audioChunk: Float32Array): void; | ||
| processAudioSAB(): void; | ||
| startContext(appId?: string): void; | ||
| stopContext(): void; | ||
| switchContext(newAppId: string): void; | ||
| closeWebsocket(websocketCode?: number, reason?: string): void; | ||
| private readonly onWebsocketClose; | ||
| private readonly onWebsocketOpen; | ||
| private readonly onWebsocketError; | ||
| private readonly onWebsocketMessage; | ||
| send(data: string | Int16Array): void; | ||
| } | ||
| export default WebsocketClient; |
| { | ||
| "name": "@speechly/browser-client", | ||
| "version": "2.0.1", | ||
| "version": "2.1.0-beta.0", | ||
| "description": "Browser client for Speechly API", | ||
@@ -24,13 +24,2 @@ "keywords": [ | ||
| ], | ||
| "scripts": { | ||
| "build": "pnpm run lint && pnpm run test 2>&1 && rm -rf ./dist/ && pnpm run buildworker && pnpx rollup -c --silent", | ||
| "build:watch": "rm -rf ./dist/ && pnpm run buildworker && pnpx rollup -c --silent", | ||
| "buildworker": "pnpx tsc ./worker/worker.ts && cat ./worker/templateOpen > ./src/websocket/worker.ts && cat ./worker/worker.js >> ./src/websocket/worker.ts && cat ./worker/templateEnd >> ./src/websocket/worker.ts", | ||
| "check": "pnpm run build && pnpx api-extractor run --verbose", | ||
| "docs": "rimraf docs && pnpx typedoc --readme none --excludeExternals --excludePrivate --excludeProtected --out ./docs/ --entryPointStrategy expand --sort required-first --disableSources ./src/", | ||
| "getdeps": "pnpm install --force --frozen-lockfile", | ||
| "lint": "pnpx eslint --cache --max-warnings 0 'src/**/*.{ts,tsx}'", | ||
| "precommit": "pnpx prettier --write src/**/*.ts && pnpm run build && pnpx api-extractor run --local && pnpm run docs", | ||
| "test": "pnpx jest --config ./config/jest.config.js" | ||
| }, | ||
| "repository": { | ||
@@ -44,3 +33,6 @@ "type": "git", | ||
| }, | ||
| "files": ["core/**/*", "src/**/*"], | ||
| "files": [ | ||
| "core/**/*", | ||
| "src/**/*" | ||
| ], | ||
| "main": "./core/speechly.umd.min.js", | ||
@@ -85,3 +77,4 @@ "module": "./core/speechly.es.js", | ||
| "typedoc-plugin-markdown": "^3.11.3", | ||
| "@rollup/plugin-typescript": "~8.3.2" | ||
| "@rollup/plugin-typescript": "~8.3.2", | ||
| "rollup-plugin-web-worker-loader": "~1.6.1" | ||
| }, | ||
@@ -93,3 +86,13 @@ "publishConfig": { | ||
| "**/optimist/minimist": "0.2.1" | ||
| }, | ||
| "scripts": { | ||
| "build": "pnpm run lint && pnpm run test 2>&1 && rm -rf ./dist/ && pnpx rollup -c --silent", | ||
| "build:watch": "rm -rf ./dist/ && pnpx rollup -c --silent", | ||
| "check": "pnpm run build && pnpx api-extractor run --verbose", | ||
| "docs": "rimraf docs && pnpx typedoc --readme none --excludeExternals --excludePrivate --excludeProtected --out ./docs/ --entryPointStrategy expand --sort required-first --disableSources ./src/", | ||
| "getdeps": "pnpm install --force --frozen-lockfile", | ||
| "lint": "pnpx eslint --cache --max-warnings 0 'src/**/*.{ts,tsx}'", | ||
| "precommit": "pnpx prettier --write src/**/*.ts && pnpm run build && pnpx api-extractor run --local && pnpm run docs", | ||
| "test": "pnpx jest --config ./config/jest.config.js" | ||
| } | ||
| } | ||
| } |
@@ -1,2 +0,2 @@ | ||
| import { DecoderState, EventCallbacks, DecoderOptions, ContextOptions } from './types' | ||
| import { DecoderState, EventCallbacks, DecoderOptions, ContextOptions, VadOptions, VadDefaultOptions, AudioProcessorParameters } from './types' | ||
| import { CloudDecoder } from './decoder' | ||
@@ -22,3 +22,6 @@ import { ErrDeviceNotSupported, DefaultSampleRate, Segment, Word, Entity, Intent } from '../speechly' | ||
| private readonly vadOptions?: VadOptions | ||
| private initialized: boolean = false | ||
| private isStreaming: boolean = false | ||
| private isStreamAutoStarted: boolean = false | ||
| private active: boolean = false | ||
@@ -28,2 +31,3 @@ private speechlyNode?: AudioWorkletNode | ||
| private stream?: MediaStreamAudioSourceNode | ||
| private listeningPromise: Promise<any> | null = null | ||
@@ -48,5 +52,7 @@ private stats = { | ||
| this.useSAB = !this.isSafari | ||
| this.vadOptions = { ...VadDefaultOptions, ...options.vad } | ||
| this.debug = options.debug ?? true | ||
| this.callbacks = new EventCallbacks() | ||
| this.callbacks.onVadStateChange.push(this.onVadStateChange.bind(this)) | ||
| this.decoder = options.decoder ?? new CloudDecoder(options) | ||
@@ -56,6 +62,19 @@ this.decoder.registerListener(this.callbacks) | ||
| onVadStateChange(active: boolean): void { | ||
| if (this.debug) { | ||
| console.log('[BrowserClient]', 'onVadStateChange', active) | ||
| } | ||
| if (this.vadOptions?.controlListening) { | ||
| if (active) { | ||
| // eslint-disable-next-line @typescript-eslint/no-floating-promises | ||
| if (!this.active) this.start() | ||
| } else { | ||
| // eslint-disable-next-line @typescript-eslint/no-floating-promises | ||
| if (this.active) this.stop() | ||
| } | ||
| } | ||
| } | ||
| /** | ||
| * Create an AudioContext for resampling audio. | ||
| * | ||
| * @param options - shorthand for attaching to existing mediaStream | ||
| */ | ||
@@ -177,3 +196,9 @@ async initialize(options?: { mediaStream?: MediaStream }): Promise<void> { | ||
| } | ||
| await this.decoder.setSampleRate(this.audioContext?.sampleRate) | ||
| await this.decoder.initAudioProcessor(this.audioContext?.sampleRate, this.vadOptions) | ||
| // Auto-start stream if VAD is defined | ||
| if (this.vadOptions) { | ||
| await this.startStream() | ||
| } | ||
| if (options?.mediaStream) { | ||
@@ -185,2 +210,10 @@ await this.attach(options?.mediaStream) | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void { | ||
| this.decoder.adjustAudioProcessor(ap) | ||
| } | ||
| /** | ||
| * Closes the client, detaching from any audio source and disconnecting any audio | ||
@@ -263,4 +296,12 @@ * processors. | ||
| const contextId = await this.start(options) | ||
| await this.startStream({ immediate: true }) | ||
| let contextId: string | ||
| const vadActive = this.vadOptions?.enabled && this.vadOptions?.controlListening | ||
| if (!vadActive) { | ||
| contextId = await this.start(options) | ||
| } else { | ||
| contextId = 'multiple context ids' | ||
| } | ||
| let sendBuffer: Float32Array | ||
@@ -277,3 +318,8 @@ for (let b = 0; b < samples.length; b += 16000) { | ||
| await this.stop() | ||
| if (!vadActive) { | ||
| await this.stop() | ||
| } | ||
| await this.stopStream() | ||
| return contextId | ||
@@ -283,2 +329,31 @@ } | ||
| /** | ||
| * If the application starts and resumes the flow of audio, `startStream` should be called at start of a continuous audio stream. | ||
| * If you're using VAD that controls starting and stopping audio contexts automatically, you can pass optional inference time options. | ||
| * It resets the stream sample counters and history. | ||
| */ | ||
| async startStream(defaultContextOptions?: ContextOptions): Promise<void> { | ||
| await this.decoder.startStream(defaultContextOptions) | ||
| this.isStreaming = true | ||
| } | ||
| /** | ||
| * If the application starts and resumes the flow of audio, `stopStream` should be called at the end of a continuous audio stream. | ||
| * It ensures that all of the internal audio buffers are flushed for processing. | ||
| */ | ||
| async stopStream(): Promise<void> { | ||
| await this.decoder.stopStream() | ||
| this.isStreaming = false | ||
| this.isStreamAutoStarted = false | ||
| } | ||
| private async queueTask(task: () => Promise<any>): Promise<any> { | ||
| const prevTask = this.listeningPromise | ||
| this.listeningPromise = (async () => { | ||
| await prevTask | ||
| return task() | ||
| })() | ||
| return this.listeningPromise | ||
| } | ||
| /** | ||
| * Starts a new audio context, returning it's id to use for matching received responses. | ||
@@ -291,6 +366,14 @@ * If an active context already exists, an error is thrown. | ||
| async start(options?: ContextOptions): Promise<string> { | ||
| await this.initialize() | ||
| const startPromise = this.decoder.startContext(options) | ||
| this.active = true | ||
| return startPromise | ||
| const promise = await this.queueTask(async () => { | ||
| await this.initialize() | ||
| if (!this.isStreaming) { | ||
| // Automatically control streaming for backwards compability | ||
| await this.startStream() | ||
| this.isStreamAutoStarted = true | ||
| } | ||
| const startPromise = this.decoder.startContext(options) | ||
| this.active = true | ||
| return startPromise | ||
| }) | ||
| return promise | ||
| } | ||
@@ -305,14 +388,22 @@ | ||
| async stop(): Promise<string | null> { | ||
| let contextId = null | ||
| try { | ||
| contextId = await this.decoder.stopContext() | ||
| if (this.stats.sentSamples === 0) { | ||
| console.warn('[BrowserClient]', 'audioContext contained no audio data') | ||
| const contextId = await this.queueTask(async () => { | ||
| let contextId = null | ||
| try { | ||
| contextId = await this.decoder.stopContext() | ||
| if (this.isStreaming && this.isStreamAutoStarted) { | ||
| // Automatically control streaming for backwards compability | ||
| await this.stopStream() | ||
| } | ||
| if (this.stats.sentSamples === 0) { | ||
| console.warn('[BrowserClient]', 'audioContext contained no audio data') | ||
| } | ||
| } catch (err) { | ||
| console.warn('[BrowserClient]', 'stop() failed', err) | ||
| } finally { | ||
| this.active = false | ||
| this.stats.sentSamples = 0 | ||
| } | ||
| } catch (err) { | ||
| console.warn('[BrowserClient]', 'stop() failed', err) | ||
| } finally { | ||
| this.active = false | ||
| this.stats.sentSamples = 0 | ||
| } | ||
| return contextId | ||
| }) | ||
| return contextId | ||
@@ -322,8 +413,6 @@ } | ||
| private handleAudio(array: Float32Array): void { | ||
| if (!this.active) { | ||
| return | ||
| } | ||
| if (array.length > 0) { | ||
| if (this.isStreaming) { | ||
| this.stats.sentSamples += array.length | ||
| this.decoder.sendAudio(array) | ||
| console.log('handleAudio') | ||
| } | ||
@@ -330,0 +419,0 @@ } |
@@ -17,2 +17,3 @@ import { v4 as uuidv4 } from 'uuid' | ||
| IntentResponse, | ||
| WorkerSignal, | ||
| } from '../websocket' | ||
@@ -22,3 +23,3 @@ | ||
| import { DecoderOptions, DecoderState, EventCallbacks, ContextOptions } from './types' | ||
| import { DecoderOptions, DecoderState, EventCallbacks, ContextOptions, VadOptions, AudioProcessorParameters } from './types' | ||
| import { stateToString } from './state' | ||
@@ -55,3 +56,2 @@ | ||
| private connectPromise: Promise<void> | null = null | ||
| private listeningPromise: Promise<any> | null = null | ||
@@ -135,2 +135,10 @@ private authToken?: string | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void { | ||
| this.apiClient.adjustAudioProcessor(ap) | ||
| } | ||
| /** | ||
| * Closes the client by closing the API connection and disabling the microphone. | ||
@@ -157,2 +165,13 @@ */ | ||
| async startStream(defaultContextOptions?: ContextOptions): Promise<void> { | ||
| await this.apiClient.startStream(defaultContextOptions) | ||
| } | ||
| async stopStream(): Promise<void> { | ||
| if (this.state === DecoderState.Active) { | ||
| await this.stopContext() | ||
| } | ||
| await this.apiClient.stopStream() | ||
| } | ||
| /** | ||
@@ -192,4 +211,2 @@ * Starts a new SLU context by sending a start context event to the API. | ||
| this.activeContexts.set(contextId, new Map<number, SegmentState>()) | ||
| this.cbs.forEach(cb => cb.contextStartedCbs.forEach(f => f(contextId))) | ||
| return contextId | ||
@@ -202,9 +219,2 @@ } | ||
| sendAudio(audio: Float32Array): void { | ||
| if (this.state !== DecoderState.Active) { | ||
| throw Error( | ||
| '[Decoder] Unable to complete startContext: Expected Active state, but was in ' + | ||
| stateToString(this.state) + | ||
| '.', | ||
| ) | ||
| } | ||
| this.apiClient.sendAudio(audio) | ||
@@ -232,4 +242,2 @@ } | ||
| const contextId = await this.apiClient.stopContext() | ||
| this.activeContexts.delete(contextId) | ||
| this.cbs.forEach(cb => cb.contextStoppedCbs.forEach(f => f(contextId))) | ||
| return contextId | ||
@@ -263,5 +271,5 @@ } catch (err) { | ||
| async setSampleRate(sr: number): Promise<void> { | ||
| this.sampleRate = sr | ||
| await this.apiClient.setSourceSampleRate(sr) | ||
| async initAudioProcessor(sampleRate: number, vadOptions?: VadOptions): Promise<void> { | ||
| this.sampleRate = sampleRate | ||
| await this.apiClient.initAudioProcessor(sampleRate, vadOptions) | ||
| } | ||
@@ -282,2 +290,26 @@ | ||
| switch (response.type) { | ||
| case WorkerSignal.VadSignalHigh: | ||
| this.cbs.forEach(cb => cb.onVadStateChange.forEach(f => f(true))) | ||
| break | ||
| case WorkerSignal.VadSignalLow: | ||
| this.cbs.forEach(cb => cb.onVadStateChange.forEach(f => f(false))) | ||
| break | ||
| case WebsocketResponseType.Started: { | ||
| this.activeContexts.set(response.audio_context, new Map<number, SegmentState>()) | ||
| this.cbs.forEach(cb => cb.contextStartedCbs.forEach(f => f(response.audio_context))) | ||
| break | ||
| } | ||
| case WebsocketResponseType.Stopped: { | ||
| this.activeContexts.delete(response.audio_context) | ||
| this.cbs.forEach(cb => cb.contextStoppedCbs.forEach(f => f(response.audio_context))) | ||
| break | ||
| } | ||
| default: | ||
| this.handleSegmentUpdate(response) | ||
| break | ||
| } | ||
| } | ||
| private readonly handleSegmentUpdate = (response: WebsocketResponse): void => { | ||
| const { audio_context, segment_id, type } = response | ||
@@ -369,5 +401,2 @@ let { data } = response | ||
| // Reset | ||
| this.listeningPromise = null | ||
| this.setState(DecoderState.Disconnected) | ||
@@ -374,0 +403,0 @@ // eslint-disable-next-line @typescript-eslint/no-floating-promises |
@@ -61,5 +61,89 @@ import { Segment, Word, Entity, Intent } from '../speechly' | ||
| storage?: Storage | ||
| /** | ||
| * Enable voice activity detection (VAD) configuration overrides | ||
| */ | ||
| vad?: Partial<VadOptions> | ||
| } | ||
| /** | ||
| * Options for voice activity detection (VAD) | ||
| * @public | ||
| */ | ||
| export interface VadOptions { | ||
| /** | ||
| * Run energy analysis | ||
| */ | ||
| enabled: boolean | ||
| /** | ||
| * Signal-to-noise energy ratio needed for frame to be 'loud'. | ||
| * Default: 3.0 [dB]. | ||
| */ | ||
| signalToNoiseDb: number | ||
| /** | ||
| * Energy threshold - below this won't trigger activation. | ||
| * Range: -90.0f to 0.0f [dB]. Default: -24 [dB]. | ||
| */ | ||
| noiseGateDb: number | ||
| /** | ||
| * Rate of background noise learn. Defined as duration in which background noise energy is moved halfway towards current frame's energy. | ||
| * Range: 0, 5000 [ms]. Default: 400 [ms]. | ||
| */ | ||
| noiseLearnHalftimeMillis: number | ||
| /** | ||
| * Number of past frames analyzed for energy threshold VAD. Should be less or equal than HistoryFrames. | ||
| * Range: 1 to 32 [frames]. Default: 5 [frames]. | ||
| */ | ||
| signalSearchFrames: number | ||
| /** | ||
| * Minimum 'signal' to 'silent' frame ratio in history to activate 'IsSignalDetected' | ||
| * Range: 0.0 to 1.0. Default: 0.7. | ||
| */ | ||
| signalActivation: number | ||
| /** | ||
| * Maximum 'signal' to 'silent' frame ratio in history to inactivate 'IsSignalDetected'. Only evaluated when the sustain period is over. | ||
| * Range: 0.0 to 1.0. Default: 0.2. | ||
| */ | ||
| signalRelease: number | ||
| /** | ||
| * Duration to keep 'IsSignalDetected' active. Renewed as long as VADActivation is holds true. | ||
| * Range: 0 to 8000 [ms]. Default: 3000 [ms]. | ||
| */ | ||
| signalSustainMillis: number | ||
| /** | ||
| * Enable listening control if you want to use IsSignalDetected to control SLU start / stop. | ||
| * Default: true. | ||
| */ | ||
| controlListening: boolean | ||
| } | ||
| export interface AudioProcessorParameters { | ||
| vad?: Partial<VadOptions> | ||
| } | ||
| /** | ||
| * Default options for voice activity detection (VAD) | ||
| * @public | ||
| */ | ||
| export const VadDefaultOptions: VadOptions = { | ||
| enabled: false, | ||
| controlListening: true, | ||
| signalToNoiseDb: 3.0, | ||
| noiseGateDb: -24.0, | ||
| noiseLearnHalftimeMillis: 400, | ||
| signalSearchFrames: 5, | ||
| signalActivation: 0.7, | ||
| signalRelease: 0.2, | ||
| signalSustainMillis: 3000, | ||
| } | ||
| /** | ||
| * All possible states of a Speechly API client. Failed state is non-recoverable. | ||
@@ -93,2 +177,3 @@ * It is also possible to use arithmetics for state comparison, e.g. `if (state < speechly.ClientState.Disconnected)`, | ||
| contextStoppedCbs: Array<(contextId: string) => void> = [] | ||
| onVadStateChange: Array<(active: boolean) => void> = [] | ||
| } | ||
@@ -102,2 +187,8 @@ | ||
| appId?: string | ||
| /** | ||
| * BrowserClient.uploadAudioData internally uses this to set audio worker | ||
| * to ‘immediate audio processor’ mode where it can control start/stop context at its own pace. | ||
| */ | ||
| immediate?: boolean | ||
| } |
| interface Window { | ||
| webkitAudioContext: typeof AudioContext | ||
| } | ||
| declare module 'web-worker:*' { | ||
| const WorkerFactory: new () => Worker | ||
| export default WorkerFactory | ||
| } |
@@ -14,3 +14,3 @@ import { ErrDeviceNotSupported, DefaultSampleRate } from '../speechly' | ||
| private readonly nativeResamplingSupported: boolean | ||
| private readonly autoGainControl: boolean | ||
| private readonly autoGainControlSupported: boolean | ||
@@ -24,6 +24,6 @@ // The media stream and audio track are initialized during `initialize()` call. | ||
| this.nativeResamplingSupported = constraints.sampleRate === true | ||
| this.autoGainControl = constraints.autoGainControl === true | ||
| this.autoGainControlSupported = constraints.autoGainControl === true | ||
| } catch { | ||
| this.nativeResamplingSupported = false | ||
| this.autoGainControl = false | ||
| this.autoGainControlSupported = false | ||
| } | ||
@@ -51,7 +51,7 @@ } | ||
| if (this.nativeResamplingSupported || this.autoGainControl) { | ||
| if (this.nativeResamplingSupported || this.autoGainControlSupported) { | ||
| mediaStreamConstraints.audio = { | ||
| sampleRate: DefaultSampleRate, | ||
| // @ts-ignore | ||
| autoGainControl: this.autoGainControl, | ||
| autoGainControl: this.autoGainControlSupported, | ||
| } | ||
@@ -58,0 +58,0 @@ } else { |
@@ -0,1 +1,3 @@ | ||
| import { AudioProcessorParameters, ContextOptions, VadOptions } from '../client' | ||
| /** | ||
@@ -9,3 +11,3 @@ * The interface for response returned by WebSocket client. | ||
| */ | ||
| type: WebsocketResponseType | ||
| type: WebsocketResponseType | WorkerSignal | ||
@@ -37,5 +39,2 @@ /** | ||
| export enum WebsocketResponseType { | ||
| Opened = 'WEBSOCKET_OPEN', | ||
| Closed = 'WEBSOCKET_CLOSED', | ||
| SourceSampleRateSetSuccess = 'SOURCE_SAMPLE_RATE_SET_SUCCESS', | ||
| Started = 'started', | ||
@@ -53,2 +52,32 @@ Stopped = 'stopped', | ||
| /** | ||
| * Messages from worker to controller | ||
| * @public | ||
| */ | ||
| export enum WorkerSignal { | ||
| Opened = 'WEBSOCKET_OPEN', | ||
| Closed = 'WEBSOCKET_CLOSED', | ||
| AudioProcessorReady = 'SOURCE_SAMPLE_RATE_SET_SUCCESS', | ||
| VadSignalHigh = 'VadSignalHigh', | ||
| VadSignalLow = 'VadSignalLow', | ||
| } | ||
| /** | ||
| * Messages from controller to worker | ||
| * @public | ||
| */ | ||
| export enum ControllerSignal { | ||
| connect = 'connect', | ||
| initAudioProcessor = 'initAudioProcessor', | ||
| adjustAudioProcessor = 'adjustAudioProcessor', | ||
| SET_SHARED_ARRAY_BUFFERS = 'SET_SHARED_ARRAY_BUFFERS', | ||
| CLOSE = 'CLOSE', | ||
| START_CONTEXT = 'START_CONTEXT', | ||
| SWITCH_CONTEXT = 'SWITCH_CONTEXT', | ||
| STOP_CONTEXT = 'STOP_CONTEXT', | ||
| AUDIO = 'AUDIO', | ||
| startStream = 'startStream', | ||
| stopStream = 'stopStream', | ||
| } | ||
| /** | ||
| * Transcript response payload. | ||
@@ -197,5 +226,11 @@ * @public | ||
| */ | ||
| setSourceSampleRate(sourceSampleRate: number): Promise<void> | ||
| initAudioProcessor(sourceSampleRate: number, vadOptions?: VadOptions): Promise<void> | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void | ||
| /** | ||
| * Closes the client. | ||
@@ -240,2 +275,7 @@ * | ||
| postMessage(message: Object): void | ||
| startStream(defaultContextOptions?: ContextOptions): Promise<void> | ||
| stopStream(): Promise<void> | ||
| } |
@@ -1,3 +0,4 @@ | ||
| import { APIClient, ResponseCallback, CloseCallback, WebsocketResponse, WebsocketResponseType } from './types' | ||
| import worker from './worker' | ||
| import { APIClient, ResponseCallback, CloseCallback, WebsocketResponse, WebsocketResponseType, WorkerSignal, ControllerSignal } from './types' | ||
| import WebsocketClient from 'web-worker:./worker' | ||
| import { AudioProcessorParameters, ContextOptions, VadOptions } from '../client' | ||
@@ -25,5 +26,5 @@ type ContextCallback = (err?: Error, contextId?: string) => void | ||
| constructor() { | ||
| const blob = new Blob([worker], { type: 'text/javascript' }) | ||
| const blobURL = window.URL.createObjectURL(blob) | ||
| this.worker = new Worker(blobURL) | ||
| // const blob = new Blob([worker], { type: 'text/javascript' }) | ||
| // const blobURL = window.URL.createObjectURL(blob) | ||
| this.worker = new WebsocketClient() | ||
| this.worker.addEventListener('message', this.onWebsocketMessage) | ||
@@ -34,3 +35,3 @@ } | ||
| this.worker.postMessage({ | ||
| type: 'INIT', | ||
| type: ControllerSignal.connect, | ||
| apiUrl, | ||
@@ -51,6 +52,7 @@ authToken, | ||
| async setSourceSampleRate(sourceSampleRate: number): Promise<void> { | ||
| async initAudioProcessor(sourceSampleRate: number, vadOptions?: VadOptions): Promise<void> { | ||
| this.worker.postMessage({ | ||
| type: 'SET_SOURCE_SAMPLE_RATE', | ||
| sourceSampleRate, | ||
| type: ControllerSignal.initAudioProcessor, | ||
| sourceSampleRate: sourceSampleRate, | ||
| vadOptions: vadOptions, | ||
| }) | ||
@@ -63,6 +65,17 @@ | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void { | ||
| this.worker.postMessage({ | ||
| type: ControllerSignal.adjustAudioProcessor, | ||
| params: ap, | ||
| }) | ||
| } | ||
| async close(): Promise<void> { | ||
| return new Promise((resolve, reject) => { | ||
| this.worker.postMessage({ | ||
| type: 'CLOSE', | ||
| type: ControllerSignal.CLOSE, | ||
| code: 1000, | ||
@@ -75,2 +88,10 @@ message: 'Client has ended the session', | ||
| async startStream(defaultContextOptions?: ContextOptions): Promise<void> { | ||
| this.worker.postMessage({ type: ControllerSignal.startStream, options: defaultContextOptions }) | ||
| } | ||
| async stopStream(): Promise<void> { | ||
| this.worker.postMessage({ type: ControllerSignal.stopStream }) | ||
| } | ||
| async startContext(appId?: string): Promise<string> { | ||
@@ -86,5 +107,5 @@ return new Promise((resolve, reject) => { | ||
| if (appId != null) { | ||
| this.worker.postMessage({ type: 'START_CONTEXT', appId }) | ||
| this.worker.postMessage({ type: ControllerSignal.START_CONTEXT, appId }) | ||
| } else { | ||
| this.worker.postMessage({ type: 'START_CONTEXT' }) | ||
| this.worker.postMessage({ type: ControllerSignal.START_CONTEXT }) | ||
| } | ||
@@ -104,3 +125,3 @@ }) | ||
| this.worker.postMessage({ type: 'STOP_CONTEXT' }) | ||
| this.worker.postMessage({ type: ControllerSignal.STOP_CONTEXT }) | ||
| }) | ||
@@ -118,3 +139,3 @@ } | ||
| }) | ||
| this.worker.postMessage({ type: 'SWITCH_CONTEXT', appId }) | ||
| this.worker.postMessage({ type: ControllerSignal.SWITCH_CONTEXT, appId }) | ||
| }) | ||
@@ -128,3 +149,3 @@ } | ||
| sendAudio(audioChunk: Float32Array): void { | ||
| this.worker.postMessage({ type: 'AUDIO', payload: audioChunk }) | ||
| this.worker.postMessage({ type: ControllerSignal.AUDIO, payload: audioChunk }) | ||
| } | ||
@@ -135,3 +156,3 @@ | ||
| switch (response.type) { | ||
| case WebsocketResponseType.Opened: | ||
| case WorkerSignal.Opened: | ||
| if (this.resolveInitialization != null) { | ||
@@ -141,3 +162,3 @@ this.resolveInitialization() | ||
| break | ||
| case WebsocketResponseType.Closed: | ||
| case WorkerSignal.Closed: | ||
| this.onCloseCb({ | ||
@@ -149,3 +170,3 @@ code: event.data.code, | ||
| break | ||
| case WebsocketResponseType.SourceSampleRateSetSuccess: | ||
| case WorkerSignal.AudioProcessorReady: | ||
| if (this.resolveSourceSampleRateSet != null) { | ||
@@ -156,2 +177,3 @@ this.resolveSourceSampleRateSet() | ||
| case WebsocketResponseType.Started: | ||
| this.onResponseCb(response) | ||
| this.startCbs.forEach(cb => { | ||
@@ -167,2 +189,3 @@ try { | ||
| case WebsocketResponseType.Stopped: | ||
| this.onResponseCb(response) | ||
| this.stopCbs.forEach(cb => { | ||
@@ -169,0 +192,0 @@ try { |
@@ -1,349 +0,383 @@ | ||
| export default `/** | ||
| * Known WebSocket response types. | ||
| import AudioProcessor from '../audioprocessing/AudioProcessor' | ||
| import EnergyTresholdVAD from '../audioprocessing/EnergyTresholdVAD' | ||
| import AudioTools from '../audioprocessing/AudioTools' | ||
| import { ControllerSignal, WebsocketResponseType, WorkerSignal } from './types' | ||
| import { AudioProcessorParameters, ContextOptions, VadOptions } from '../client' | ||
| /** | ||
| * The interface for response returned by WebSocket client. | ||
| * @public | ||
| */ | ||
| var WebsocketResponseType; | ||
| (function (WebsocketResponseType) { | ||
| WebsocketResponseType["Opened"] = "WEBSOCKET_OPEN"; | ||
| WebsocketResponseType["SourceSampleRateSetSuccess"] = "SOURCE_SAMPLE_RATE_SET_SUCCESS"; | ||
| WebsocketResponseType["Started"] = "started"; | ||
| WebsocketResponseType["Stopped"] = "stopped"; | ||
| })(WebsocketResponseType || (WebsocketResponseType = {})); | ||
| var CONTROL = { | ||
| WRITE_INDEX: 0, | ||
| FRAMES_AVAILABLE: 1, | ||
| LOCK: 2 | ||
| }; | ||
| var WebsocketClient = /** @class */ (function () { | ||
| function WebsocketClient(ctx) { | ||
| var _this = this; | ||
| this.isContextStarted = false; | ||
| this.isStartContextConfirmed = false; | ||
| this.shouldResendLastFramesSent = false; | ||
| this.buffer = new Float32Array(0); | ||
| this.lastFramesSent = new Int16Array(0); // to re-send after switch context | ||
| this.debug = false; | ||
| this.initialized = false; | ||
| // WebSocket's close handler, called e.g. when | ||
| // - normal close (code 1000) | ||
| // - network unreachable or unable to (re)connect (code 1006) | ||
| // List of CloseEvent.code values: https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent/code | ||
| this.onWebsocketClose = function (event) { | ||
| if (_this.debug) { | ||
| console.log('[WebSocketClient]', 'onWebsocketClose'); | ||
| } | ||
| _this.websocket.removeEventListener('open', _this.onWebsocketOpen); | ||
| _this.websocket.removeEventListener('message', _this.onWebsocketMessage); | ||
| _this.websocket.removeEventListener('error', _this.onWebsocketError); | ||
| _this.websocket.removeEventListener('close', _this.onWebsocketClose); | ||
| _this.websocket = undefined; | ||
| _this.workerCtx.postMessage({ | ||
| type: 'WEBSOCKET_CLOSED', | ||
| code: event.code, | ||
| reason: event.reason, | ||
| wasClean: event.wasClean | ||
| }); | ||
| }; | ||
| this.onWebsocketOpen = function (_event) { | ||
| if (_this.debug) { | ||
| console.log('[WebSocketClient]', 'websocket opened'); | ||
| } | ||
| if (_this.isContextStarted && !_this.isStartContextConfirmed) { | ||
| _this.send(_this.outbox); | ||
| } | ||
| _this.workerCtx.postMessage({ type: 'WEBSOCKET_OPEN' }); | ||
| }; | ||
| this.onWebsocketError = function (_event) { | ||
| if (_this.debug) { | ||
| console.log('[WebSocketClient]', 'websocket error'); | ||
| } | ||
| }; | ||
| this.onWebsocketMessage = function (event) { | ||
| var response; | ||
| try { | ||
| response = JSON.parse(event.data); | ||
| } | ||
| catch (e) { | ||
| console.error('[WebSocketClient]', 'error parsing response from the server:', e); | ||
| return; | ||
| } | ||
| if (response.type === WebsocketResponseType.Started) { | ||
| _this.isStartContextConfirmed = true; | ||
| if (_this.shouldResendLastFramesSent) { | ||
| _this.resendLastFrames(); | ||
| _this.shouldResendLastFramesSent = false; | ||
| } | ||
| } | ||
| _this.workerCtx.postMessage(response); | ||
| }; | ||
| this.workerCtx = ctx; | ||
| interface WebsocketResponse { | ||
| /** | ||
| * Response type. | ||
| */ | ||
| type: WebsocketResponseType | ||
| /** | ||
| * Audio context ID. | ||
| */ | ||
| audio_context: string | ||
| /** | ||
| * Segment ID. | ||
| */ | ||
| segment_id: number | ||
| /** | ||
| * Response payload. | ||
| * | ||
| * The payload value should match the response type (i.e. TranscriptResponse should have Transcript type). | ||
| * Not all response types have payloads - Started, Stopped and SegmentEnd don't have payloads. | ||
| * TentativeIntent and Intent share the same payload interface (IntentResponse). | ||
| */ | ||
| data: any | ||
| } | ||
| const CONTROL = { | ||
| WRITE_INDEX: 0, | ||
| FRAMES_AVAILABLE: 1, | ||
| LOCK: 2, | ||
| } | ||
| class WebsocketClient { | ||
| private readonly workerCtx: Worker | ||
| private targetSampleRate: number = 16000 | ||
| private isContextStarted: boolean = false | ||
| private websocket?: WebSocket | ||
| private audioProcessor?: AudioProcessor | ||
| private controlSAB?: Int32Array | ||
| private dataSAB?: Float32Array | ||
| private readonly frameMillis = 30 | ||
| private readonly outputAudioFrame: Int16Array = new Int16Array(this.frameMillis * this.targetSampleRate / 1000) | ||
| private debug: boolean = false | ||
| private defaultContextOptions?: ContextOptions | ||
| constructor(ctx: Worker) { | ||
| this.workerCtx = ctx | ||
| } | ||
| connect(apiUrl: string, authToken: string, targetSampleRate: number, debug: boolean): void { | ||
| this.debug = debug | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'connecting to ', apiUrl) | ||
| } | ||
| WebsocketClient.prototype.init = function (apiUrl, authToken, targetSampleRate, debug) { | ||
| this.debug = debug; | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'initialize worker'); | ||
| } | ||
| this.apiUrl = apiUrl; | ||
| this.authToken = authToken; | ||
| this.targetSampleRate = targetSampleRate; | ||
| this.initialized = true; | ||
| this.isContextStarted = false; | ||
| this.connect(0); | ||
| }; | ||
| WebsocketClient.prototype.setSourceSampleRate = function (sourceSampleRate) { | ||
| this.sourceSampleRate = sourceSampleRate; | ||
| this.resampleRatio = this.sourceSampleRate / this.targetSampleRate; | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'resampleRatio', this.resampleRatio); | ||
| } | ||
| if (this.resampleRatio > 1) { | ||
| this.filter = generateFilter(this.sourceSampleRate, this.targetSampleRate, 127); | ||
| } | ||
| this.workerCtx.postMessage({ type: 'SOURCE_SAMPLE_RATE_SET_SUCCESS' }); | ||
| if (isNaN(this.resampleRatio)) { | ||
| throw Error("resampleRatio is NaN source rate is ".concat(this.sourceSampleRate, " and target rate is ").concat(this.targetSampleRate)); | ||
| } | ||
| }; | ||
| WebsocketClient.prototype.setSharedArrayBuffers = function (controlSAB, dataSAB) { | ||
| this.controlSAB = new Int32Array(controlSAB); | ||
| this.dataSAB = new Float32Array(dataSAB); | ||
| var audioHandleInterval = this.dataSAB.length / 32; // ms | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'Audio handle interval', audioHandleInterval, 'ms'); | ||
| } | ||
| setInterval(this.sendAudioFromSAB.bind(this), audioHandleInterval); | ||
| }; | ||
| WebsocketClient.prototype.connect = function (timeout) { | ||
| if (timeout === void 0) { timeout = 1000; } | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'connect in ', timeout / 1000, 'sec'); | ||
| } | ||
| setTimeout(this.initializeWebsocket.bind(this), timeout); | ||
| }; | ||
| WebsocketClient.prototype.initializeWebsocket = function () { | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'connecting to ', this.apiUrl); | ||
| } | ||
| this.websocket = new WebSocket(this.apiUrl, this.authToken); | ||
| this.websocket.addEventListener('open', this.onWebsocketOpen); | ||
| this.websocket.addEventListener('message', this.onWebsocketMessage); | ||
| this.websocket.addEventListener('error', this.onWebsocketError); | ||
| this.websocket.addEventListener('close', this.onWebsocketClose); | ||
| }; | ||
| WebsocketClient.prototype.isOpen = function () { | ||
| return this.websocket !== undefined && this.websocket.readyState === this.websocket.OPEN; | ||
| }; | ||
| WebsocketClient.prototype.resendLastFrames = function () { | ||
| if (this.lastFramesSent.length > 0) { | ||
| this.send(this.lastFramesSent); | ||
| this.lastFramesSent = new Int16Array(0); | ||
| } | ||
| }; | ||
| WebsocketClient.prototype.sendAudio = function (audioChunk) { | ||
| if (!this.isContextStarted) { | ||
| return; | ||
| } | ||
| if (audioChunk.length > 0) { | ||
| if (this.resampleRatio > 1) { | ||
| // Downsampling | ||
| this.send(this.downsample(audioChunk)); | ||
| this.targetSampleRate = targetSampleRate | ||
| this.isContextStarted = false | ||
| this.websocket = new WebSocket(apiUrl, authToken) | ||
| this.websocket.addEventListener('open', this.onWebsocketOpen) | ||
| this.websocket.addEventListener('message', this.onWebsocketMessage) | ||
| this.websocket.addEventListener('error', this.onWebsocketError) | ||
| this.websocket.addEventListener('close', this.onWebsocketClose) | ||
| } | ||
| initAudioProcessor(sourceSampleRate: number, vadOptions?: VadOptions): void { | ||
| this.audioProcessor = new AudioProcessor(sourceSampleRate, this.targetSampleRate, 5) | ||
| if (vadOptions) { | ||
| this.audioProcessor.vad = new EnergyTresholdVAD(vadOptions) | ||
| this.audioProcessor.onVadSignalHigh = () => { | ||
| const currentVadOptions = this.audioProcessor?.vad?.vadOptions | ||
| if (currentVadOptions) { | ||
| if (this.defaultContextOptions?.immediate) { | ||
| if (currentVadOptions.enabled && currentVadOptions.controlListening) { | ||
| this.startContext() | ||
| } | ||
| else { | ||
| this.send(float32ToInt16(audioChunk)); | ||
| } else { | ||
| if (this.audioProcessor?.vad?.vadOptions.enabled) { | ||
| if (currentVadOptions.enabled && currentVadOptions.controlListening) { | ||
| this.workerCtx.postMessage({ type: WorkerSignal.VadSignalHigh }) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| }; | ||
| WebsocketClient.prototype.sendAudioFromSAB = function () { | ||
| if (!this.isContextStarted) { | ||
| this.controlSAB[CONTROL.FRAMES_AVAILABLE] = 0; | ||
| this.controlSAB[CONTROL.WRITE_INDEX] = 0; | ||
| return; | ||
| } | ||
| if (this.controlSAB == undefined) { | ||
| return; | ||
| } | ||
| var framesAvailable = this.controlSAB[CONTROL.FRAMES_AVAILABLE]; | ||
| var lock = this.controlSAB[CONTROL.LOCK]; | ||
| if (lock == 0 && framesAvailable > 0) { | ||
| var data = this.dataSAB.subarray(0, framesAvailable); | ||
| this.controlSAB[CONTROL.FRAMES_AVAILABLE] = 0; | ||
| this.controlSAB[CONTROL.WRITE_INDEX] = 0; | ||
| if (data.length > 0) { | ||
| var frames_1; | ||
| if (this.resampleRatio > 1) { | ||
| frames_1 = this.downsample(data); | ||
| } | ||
| else { | ||
| frames_1 = float32ToInt16(data); | ||
| } | ||
| this.send(frames_1); | ||
| // 16000 per second, 1000 in 100 ms | ||
| // save last 250 ms | ||
| if (this.lastFramesSent.length > 1024 * 4) { | ||
| this.lastFramesSent = frames_1; | ||
| } | ||
| else { | ||
| var concat = new Int16Array(this.lastFramesSent.length + frames_1.length); | ||
| concat.set(this.lastFramesSent); | ||
| concat.set(frames_1, this.lastFramesSent.length); | ||
| this.lastFramesSent = concat; | ||
| } | ||
| } | ||
| this.audioProcessor.onVadSignalLow = () => { | ||
| const currentVadOptions = this.audioProcessor?.vad?.vadOptions | ||
| if (currentVadOptions) { | ||
| if (this.defaultContextOptions?.immediate) { | ||
| if (currentVadOptions.enabled && currentVadOptions.controlListening) { | ||
| this.stopContext() | ||
| } | ||
| } | ||
| }; | ||
| WebsocketClient.prototype.startContext = function (appId) { | ||
| if (this.isContextStarted) { | ||
| console.error('[WebSocketClient]', "can't start context: active context exists"); | ||
| return; | ||
| } | ||
| this.isContextStarted = true; | ||
| this.isStartContextConfirmed = false; | ||
| if (appId !== undefined) { | ||
| this.outbox = JSON.stringify({ event: 'start', appId: appId }); | ||
| } | ||
| else { | ||
| this.outbox = JSON.stringify({ event: 'start' }); | ||
| } | ||
| this.send(this.outbox); | ||
| }; | ||
| WebsocketClient.prototype.stopContext = function () { | ||
| if (!this.websocket) { | ||
| throw Error('WebSocket is undefined'); | ||
| } | ||
| if (!this.isContextStarted) { | ||
| console.error('[WebSocketClient]', "can't stop context: no active context"); | ||
| return; | ||
| } | ||
| this.isContextStarted = false; | ||
| this.isStartContextConfirmed = false; | ||
| var StopEventJSON = JSON.stringify({ event: 'stop' }); | ||
| this.send(StopEventJSON); | ||
| }; | ||
| WebsocketClient.prototype.switchContext = function (newAppId) { | ||
| if (!this.websocket) { | ||
| throw Error('WebSocket is undefined'); | ||
| } | ||
| if (!this.isContextStarted) { | ||
| console.error('[WebSocketClient]', "can't switch context: no active context"); | ||
| return; | ||
| } | ||
| if (newAppId == undefined) { | ||
| console.error('[WebSocketClient]', "can't switch context: new app id is undefined"); | ||
| return; | ||
| } | ||
| this.isStartContextConfirmed = false; | ||
| var StopEventJSON = JSON.stringify({ event: 'stop' }); | ||
| this.send(StopEventJSON); | ||
| this.shouldResendLastFramesSent = true; | ||
| this.send(JSON.stringify({ event: 'start', appId: newAppId })); | ||
| }; | ||
| WebsocketClient.prototype.closeWebsocket = function (websocketCode, reason) { | ||
| if (websocketCode === void 0) { websocketCode = 1005; } | ||
| if (reason === void 0) { reason = 'No Status Received'; } | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'Websocket closing'); | ||
| } | ||
| if (!this.websocket) { | ||
| throw Error('WebSocket is undefined'); | ||
| } | ||
| this.websocket.close(websocketCode, reason); | ||
| }; | ||
| WebsocketClient.prototype.downsample = function (input) { | ||
| var inputBuffer = new Float32Array(this.buffer.length + input.length); | ||
| inputBuffer.set(this.buffer, 0); | ||
| inputBuffer.set(input, this.buffer.length); | ||
| var outputLength = Math.ceil((inputBuffer.length - this.filter.length) / this.resampleRatio); | ||
| var outputBuffer = new Int16Array(outputLength); | ||
| for (var i = 0; i < outputLength; i++) { | ||
| var offset = Math.round(this.resampleRatio * i); | ||
| var val = 0.0; | ||
| for (var j = 0; j < this.filter.length; j++) { | ||
| val += inputBuffer[offset + j] * this.filter[j]; | ||
| } else { | ||
| if (currentVadOptions.enabled && currentVadOptions.controlListening) { | ||
| this.workerCtx.postMessage({ type: WorkerSignal.VadSignalLow }) | ||
| } | ||
| outputBuffer[i] = val * (val < 0 ? 0x8000 : 0x7fff); | ||
| } | ||
| } | ||
| var remainingOffset = Math.round(this.resampleRatio * outputLength); | ||
| if (remainingOffset < inputBuffer.length) { | ||
| this.buffer = inputBuffer.subarray(remainingOffset); | ||
| } | ||
| else { | ||
| this.buffer = new Float32Array(0); | ||
| } | ||
| return outputBuffer; | ||
| }; | ||
| WebsocketClient.prototype.send = function (data) { | ||
| if (this.isOpen()) { | ||
| try { | ||
| this.websocket.send(data); | ||
| } | ||
| catch (error) { | ||
| console.log('[WebSocketClient]', 'server connection error', error); | ||
| } | ||
| } | ||
| }; | ||
| return WebsocketClient; | ||
| }()); | ||
| var ctx = self; | ||
| var websocketClient = new WebsocketClient(ctx); | ||
| ctx.onmessage = function (e) { | ||
| switch (e.data.type) { | ||
| case 'INIT': | ||
| websocketClient.init(e.data.apiUrl, e.data.authToken, e.data.targetSampleRate, e.data.debug); | ||
| break; | ||
| case 'SET_SOURCE_SAMPLE_RATE': | ||
| websocketClient.setSourceSampleRate(e.data.sourceSampleRate); | ||
| break; | ||
| case 'SET_SHARED_ARRAY_BUFFERS': | ||
| websocketClient.setSharedArrayBuffers(e.data.controlSAB, e.data.dataSAB); | ||
| break; | ||
| case 'CLOSE': | ||
| websocketClient.closeWebsocket(1000, 'Close requested by client'); | ||
| break; | ||
| case 'START_CONTEXT': | ||
| websocketClient.startContext(e.data.appId); | ||
| break; | ||
| case 'SWITCH_CONTEXT': | ||
| websocketClient.switchContext(e.data.appId); | ||
| break; | ||
| case 'STOP_CONTEXT': | ||
| websocketClient.stopContext(); | ||
| break; | ||
| case 'AUDIO': | ||
| websocketClient.sendAudio(e.data.payload); | ||
| break; | ||
| default: | ||
| console.log('WORKER', e); | ||
| } | ||
| } | ||
| }; | ||
| function float32ToInt16(buffer) { | ||
| var buf = new Int16Array(buffer.length); | ||
| for (var l = 0; l < buffer.length; l++) { | ||
| buf[l] = buffer[l] * (buffer[l] < 0 ? 0x8000 : 0x7fff); | ||
| this.audioProcessor.sendAudio = (floats: Float32Array, startIndex: number, length: number) => { | ||
| AudioTools.convertFloatToInt16(floats, this.outputAudioFrame, startIndex, length) | ||
| this.send(this.outputAudioFrame) | ||
| } | ||
| return buf; | ||
| } | ||
| function generateFilter(sourceSampleRate, targetSampleRate, length) { | ||
| if (length % 2 === 0) { | ||
| throw Error('Filter length must be odd'); | ||
| this.workerCtx.postMessage({ type: WorkerSignal.AudioProcessorReady }) | ||
| } | ||
| /** | ||
| * Control audio processor parameters | ||
| * @param ap - Audio processor parameters to adjust | ||
| */ | ||
| adjustAudioProcessor(ap: AudioProcessorParameters): void { | ||
| if (!this.audioProcessor) { | ||
| throw new Error('No AudioProcessor') | ||
| } | ||
| var cutoff = targetSampleRate / 2; | ||
| var filter = new Float32Array(length); | ||
| var sum = 0; | ||
| for (var i = 0; i < length; i++) { | ||
| var x = sinc(((2 * cutoff) / sourceSampleRate) * (i - (length - 1) / 2)); | ||
| sum += x; | ||
| filter[i] = x; | ||
| if (ap.vad) { | ||
| if (!this.audioProcessor.vad) { | ||
| throw new Error('No VAD in AudioProcessor. Did you define `vad` in BrowserClient constructor parameters?') | ||
| } | ||
| this.audioProcessor.vad.adjustVadOptions(ap.vad) | ||
| } | ||
| for (var i = 0; i < length; i++) { | ||
| filter[i] = filter[i] / sum; | ||
| } | ||
| setSharedArrayBuffers(controlSAB: number, dataSAB: number): void { | ||
| this.controlSAB = new Int32Array(controlSAB) | ||
| this.dataSAB = new Float32Array(dataSAB) | ||
| const audioHandleInterval = this.dataSAB.length / 32 // ms | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'Audio handle interval', audioHandleInterval, 'ms') | ||
| } | ||
| return filter; | ||
| } | ||
| function sinc(x) { | ||
| if (x === 0.0) { | ||
| return 1.0; | ||
| setInterval(this.processAudioSAB.bind(this), audioHandleInterval) | ||
| } | ||
| startStream(defaultContextOptions?: ContextOptions): void { | ||
| if (!this.audioProcessor) { | ||
| throw new Error('No AudioProcessor') | ||
| } | ||
| var piX = Math.PI * x; | ||
| return Math.sin(piX) / piX; | ||
| this.defaultContextOptions = defaultContextOptions | ||
| this.audioProcessor.resetStream() | ||
| } | ||
| stopStream(): void { | ||
| if (!this.audioProcessor) { | ||
| throw new Error('No AudioProcessor') | ||
| } | ||
| if (this.isContextStarted) { | ||
| // Ensure stopContext is called in immediate mode | ||
| this.stopContext() | ||
| } | ||
| this.defaultContextOptions = undefined | ||
| } | ||
| /** | ||
| * Processes and sends audio | ||
| * @param audioChunk - audio data to process | ||
| */ | ||
| processAudio(audioChunk: Float32Array): void { | ||
| if (!this.audioProcessor) { | ||
| throw new Error('No AudioProcessor') | ||
| } | ||
| this.audioProcessor.processAudio(audioChunk) | ||
| } | ||
| processAudioSAB(): void { | ||
| if (!this.controlSAB || !this.dataSAB) { | ||
| throw new Error('No SharedArrayBuffers') | ||
| } | ||
| const framesAvailable = this.controlSAB[CONTROL.FRAMES_AVAILABLE] | ||
| const lock = this.controlSAB[CONTROL.LOCK] | ||
| if (lock === 0 && framesAvailable > 0) { | ||
| const data = this.dataSAB.subarray(0, framesAvailable) | ||
| this.controlSAB[CONTROL.FRAMES_AVAILABLE] = 0 | ||
| this.controlSAB[CONTROL.WRITE_INDEX] = 0 | ||
| if (data.length > 0) { | ||
| this.processAudio(data) | ||
| } | ||
| } | ||
| } | ||
| startContext(appId?: string): void { | ||
| if (!this.audioProcessor) { | ||
| throw Error('No AudioProcessor') | ||
| } | ||
| if (this.isContextStarted) { | ||
| console.error('[WebSocketClient]', "can't start context: active context exists") | ||
| return | ||
| } | ||
| this.audioProcessor.startContext() | ||
| this.isContextStarted = true | ||
| if (appId !== undefined) { | ||
| this.send(JSON.stringify({ event: 'start', appId })) | ||
| } else { | ||
| this.send(JSON.stringify({ event: 'start' })) | ||
| } | ||
| } | ||
| stopContext(): void { | ||
| if (!this.audioProcessor) { | ||
| throw Error('No AudioProcessor') | ||
| } | ||
| if (!this.isContextStarted) { | ||
| console.error('[WebSocketClient]', "can't stop context: no active context") | ||
| return | ||
| } | ||
| this.audioProcessor.stopContext() | ||
| this.isContextStarted = false | ||
| const StopEventJSON = JSON.stringify({ event: 'stop' }) | ||
| this.send(StopEventJSON) | ||
| } | ||
| switchContext(newAppId: string): void { | ||
| if (!this.websocket) { | ||
| throw Error('WebSocket is undefined') | ||
| } | ||
| if (!this.isContextStarted) { | ||
| console.error('[WebSocketClient]', "can't switch context: no active context") | ||
| return | ||
| } | ||
| if (newAppId === undefined) { | ||
| console.error('[WebSocketClient]', "can't switch context: new app id is undefined") | ||
| return | ||
| } | ||
| const StopEventJSON = JSON.stringify({ event: 'stop' }) | ||
| this.send(StopEventJSON) | ||
| this.send(JSON.stringify({ event: 'start', appId: newAppId })) | ||
| } | ||
| closeWebsocket(websocketCode: number = 1005, reason: string = 'No Status Received'): void { | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'Websocket closing') | ||
| } | ||
| if (!this.websocket) { | ||
| throw Error('WebSocket is undefined') | ||
| } | ||
| this.websocket.close(websocketCode, reason) | ||
| } | ||
| // WebSocket's close handler, called e.g. when | ||
| // - normal close (code 1000) | ||
| // - network unreachable or unable to (re)connect (code 1006) | ||
| // List of CloseEvent.code values: https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent/code | ||
| private readonly onWebsocketClose = (event: CloseEvent): void => { | ||
| if (!this.websocket) { | ||
| throw Error('WebSocket is undefined') | ||
| } | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'onWebsocketClose') | ||
| } | ||
| this.websocket.removeEventListener('open', this.onWebsocketOpen) | ||
| this.websocket.removeEventListener('message', this.onWebsocketMessage) | ||
| this.websocket.removeEventListener('error', this.onWebsocketError) | ||
| this.websocket.removeEventListener('close', this.onWebsocketClose) | ||
| this.websocket = undefined | ||
| this.workerCtx.postMessage({ | ||
| type: WorkerSignal.Closed, | ||
| code: event.code, | ||
| reason: event.reason, | ||
| wasClean: event.wasClean, | ||
| }) | ||
| } | ||
| private readonly onWebsocketOpen = (_event: Event): void => { | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'websocket opened') | ||
| } | ||
| this.workerCtx.postMessage({ type: WorkerSignal.Opened }) | ||
| } | ||
| private readonly onWebsocketError = (_event: Event): void => { | ||
| if (this.debug) { | ||
| console.log('[WebSocketClient]', 'websocket error') | ||
| } | ||
| } | ||
| private readonly onWebsocketMessage = (event: MessageEvent): void => { | ||
| let response: WebsocketResponse | ||
| try { | ||
| response = JSON.parse(event.data) | ||
| } catch (e) { | ||
| console.error('[WebSocketClient]', 'error parsing response from the server:', e) | ||
| return | ||
| } | ||
| this.workerCtx.postMessage(response) | ||
| } | ||
| send(data: string | Int16Array): void { | ||
| if (!this.websocket) { | ||
| throw new Error('No Websocket') | ||
| } | ||
| if (this.websocket.readyState !== this.websocket.OPEN) { | ||
| throw new Error(`Expected OPEN Websocket state, but got ${this.websocket.readyState}`) | ||
| } | ||
| try { | ||
| this.websocket.send(data) | ||
| } catch (error) { | ||
| console.log('[WebSocketClient]', 'server connection error', error) | ||
| } | ||
| } | ||
| } | ||
| ` | ||
| const ctx: Worker = self as any | ||
| const websocketClient = new WebsocketClient(ctx) | ||
| ctx.onmessage = function (e) { | ||
| switch (e.data.type) { | ||
| case ControllerSignal.connect: | ||
| websocketClient.connect(e.data.apiUrl, e.data.authToken, e.data.targetSampleRate, e.data.debug) | ||
| break | ||
| case ControllerSignal.initAudioProcessor: | ||
| websocketClient.initAudioProcessor(e.data.sourceSampleRate, e.data.vadOptions) | ||
| break | ||
| case ControllerSignal.adjustAudioProcessor: | ||
| websocketClient.adjustAudioProcessor(e.data.params) | ||
| break | ||
| case ControllerSignal.SET_SHARED_ARRAY_BUFFERS: | ||
| websocketClient.setSharedArrayBuffers(e.data.controlSAB, e.data.dataSAB) | ||
| break | ||
| case ControllerSignal.CLOSE: | ||
| websocketClient.closeWebsocket(1000, 'Close requested by client') | ||
| break | ||
| case ControllerSignal.startStream: | ||
| websocketClient.startStream(e.data.options) | ||
| break | ||
| case ControllerSignal.stopStream: | ||
| websocketClient.stopStream() | ||
| break | ||
| case ControllerSignal.START_CONTEXT: | ||
| websocketClient.startContext(e.data.appId) | ||
| break | ||
| case ControllerSignal.SWITCH_CONTEXT: | ||
| websocketClient.switchContext(e.data.appId) | ||
| break | ||
| case ControllerSignal.STOP_CONTEXT: | ||
| websocketClient.stopContext() | ||
| break | ||
| case ControllerSignal.AUDIO: | ||
| websocketClient.processAudio(e.data.payload) | ||
| break | ||
| default: | ||
| console.log('WORKER', e) | ||
| } | ||
| } | ||
| export default WebsocketClient |
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Fixed alerts
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Improved metrics
- Total package byte prevSize
- increased by18.65%
440579
- Number of package files
- increased by9.68%
68
- Lines of code
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Worsened metrics
- Dev dependency count
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31
- Number of low quality alerts
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No dependency changes