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BingTTSClient.ts
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BingTTSClient.ts
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// Based on Bing Speech API documentation
// https://www.microsoft.com/cognitive-services/en-us/Speech-api/documentation/API-Reference-REST/BingVoiceOutput
module BingTTS {
interface HttpHeader {
name: string;
value: string;
}
interface SpeechItem {
isReadyToPlay: boolean;
data: ArrayBuffer;
index: number;
text: string;
locale: SupportedLocales;
outputFormat: OutputFormat;
callback: () => void;
}
type OutputFormatValues =
"raw-8khz-8bit-mono-mulaw"
| "raw-16khz-16bit-mono-pcm"
| "riff-8khz-8bit-mono-mulaw"
| "riff-16khz-16bit-mono-pcm";
export enum OutputFormat {
/**
* Warning: not supported by Web Audio
*/
Raw8khz8bit,
/**
* Warning: not supported by Web Audio
*/
Raw16khz16bit,
Riff8khz8bit,
/**
* Default value
*/
Riff16khz16bit
};
type SupportedLocalesValues = "Microsoft Server Speech Text to Speech Voice (ar-EG, Hoda)" |
"Microsoft Server Speech Text to Speech Voice (de-DE, Hedda)" |
"Microsoft Server Speech Text to Speech Voice (de-DE, Stefan, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (en-AU, Catherine)" |
"Microsoft Server Speech Text to Speech Voice (en-CA, Linda)" |
"Microsoft Server Speech Text to Speech Voice (en-GB, Susan, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (en-GB, George, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (en-IN, Ravi, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (en-US, ZiraRUS)" |
"Microsoft Server Speech Text to Speech Voice (en-US, BenjaminRUS)" |
"Microsoft Server Speech Text to Speech Voice (es-ES, Laura, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (es-ES, Pablo, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (es-MX, Raul, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (fr-CA, Caroline)" |
"Microsoft Server Speech Text to Speech Voice (fr-FR, Julie, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (fr-FR, Paul, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (it-IT, Cosimo, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (ja-JP, Ayumi, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (ja-JP, Ichiro, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (pt-BR, Daniel, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (ru-RU, Irina, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (ru-RU, Pavel, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (zh-CN, HuihuiRUS)" |
"Microsoft Server Speech Text to Speech Voice (zh-CN, Yaoyao, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (zh-CN, Kangkang, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (zh-HK, Tracy, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (zh-HK, Danny, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (zh-TW, Yating, Apollo)" |
"Microsoft Server Speech Text to Speech Voice (zh-TW, Zhiwei, Apollo)";
export enum SupportedLocales {
arEG_Female, deDE_Female, deDE_Male, enAU_Female, enCA_Female, enGB_Female, enGB_Male, enIN_Male, enUS_Female, enUS_Male, esES_Female, esES_Male, esMX_Male, frCA_Female,
frFR_Female, frFR_Male, itIT_Male, jpJP_Female, jpJP_Male, ptBR_Male, ruRU_Female, ruRU_Male, zhCN_Female, zhCN_Female2, zhCN_Male, zhHK_Female, zhHK_Male, zhTW_Female, zhTW_Male
}
export class Client {
private _playing: boolean;
private _audioContext: AudioContext;
private _canUseWebAudio = false;
private _apiKey: string;
private _globalLocale: SupportedLocales;
private _waitingQueue: SpeechItem[] = [];
private _waitingQueueIndex: number[] = [];
private _nbWaitingItems: number = 0;
private _requestsInProgress = 0;
// By default, doing multiple XHR in parallel to download Bing Speech generated wav
// Set to false to serialize requests
public multipleXHR: boolean = true;
/**
* @param apiKey should be your Bing Speech API key
* Note: The way to get api key:
* https://www.microsoft.com/cognitive-services/en-us/subscriptions?productId=/products/Bing.Speech.Preview
* Paid: https://portal.azure.com/#create/Microsoft.CognitiveServices/apitype/Bing.Speech/pricingtier/S0
*/
public constructor(apiKey: string, locale: SupportedLocales = SupportedLocales.enUS_Male) {
if (!apiKey) {
throw "Please provide a valid Bing Speech API key";
}
this._apiKey = apiKey;
this._globalLocale = locale;
try {
if (typeof window.AudioContext !== 'undefined' || typeof window.webkitAudioContext !== 'undefined') {
window.AudioContext = window.AudioContext || window.webkitAudioContext;
this._audioContext = new AudioContext();
this._canUseWebAudio = true;
// iOS requires a touch interaction before unlocking its web audio stack
if (/iPad|iPhone|iPod/.test(navigator.platform)) {
this._unlockiOSaudio();
}
}
}
catch (e) {
console.error("Cannot initialize Web Audio Context.");
}
}
private _unlockiOSaudio() {
var unlockaudio = () => {
var buffer = this._audioContext.createBuffer(1, 1, 22050);
var source = this._audioContext.createBufferSource();
source.buffer = buffer;
source.connect(this._audioContext.destination);
source.start(0);
setTimeout(() => {
if (((<any>source).playbackState === (<any>source).PLAYING_STATE || (<any>source).playbackState === (<any>source).FINISHED_STATE)) {
window.removeEventListener('touchend', unlockaudio, false);
}
}, 0);
};
window.addEventListener('touchend', unlockaudio, false);
}
private async _makeHttpRequest(actionType: string, url: string, isArrayBuffer: boolean = false, optionalHeaders?: HttpHeader[], dataToSend?): Promise<any> {
return new Promise<any>((resolve, reject) => {
var xhr = new XMLHttpRequest();
if (isArrayBuffer) {
xhr.responseType = 'arraybuffer';
}
xhr.onreadystatechange = function (event) {
if (xhr.readyState !== 4) return;
if (xhr.status >= 200 && xhr.status < 300) {
if (!isArrayBuffer) {
resolve(xhr.responseText);
}
else {
resolve(xhr.response);
}
} else {
reject(xhr.statusText);//Error
}
};
xhr.open(actionType, url, true);
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
xhr.setRequestHeader("If-Modified-Since", "Sun, 6 Jun 1980 00:00:00 GMT");
if (optionalHeaders) {
optionalHeaders.forEach((header) => {
xhr.setRequestHeader(header.name, header.value);
});
}
if (dataToSend) {
xhr.send(dataToSend);
}
else {
xhr.send();
}
});
}
public async synthesize(text: string, locale?: SupportedLocales, callback?: () => void, outputFormat: OutputFormat = OutputFormat.Riff16khz16bit) {
if (!this._canUseWebAudio) {
console.error("You need Web Audio to use this API.");
return;
}
// Let's use that as a key to retrieve our item after the XHR callback
let speechItemIndex = this._nbWaitingItems;
this._nbWaitingItems++;
var newSpeechItem: SpeechItem = { isReadyToPlay: false, data: null, index: speechItemIndex, text: text, locale: locale, outputFormat: outputFormat, callback: callback};
this._waitingQueue.push(newSpeechItem);
this._waitingQueueIndex.push(speechItemIndex);
if (this.multipleXHR || this._requestsInProgress == 0) {
this._getBingSpeechData(text, locale, outputFormat, speechItemIndex);
}
}
private async _getBingSpeechData(text: string, locale: SupportedLocales, outputFormat: OutputFormat, speechItemIndex: number) {
this._requestsInProgress++;
// ---- This whole code block is async ------
var optionalHeaders: HttpHeader[] = [{ name: "Ocp-Apim-Subscription-Key", value: this._apiKey },
// required for Firefox otherwise a CORS error is raised
{ name: "Access-Control-Allow-Origin", value: "*" }]
try {
var resultsText = await this._makeHttpRequest("POST", "https://api.cognitive.microsoft.com/sts/v1.0/issueToken", false, optionalHeaders);
}
catch (ex) {
console.error("Error issuing token. Did you provide a valid Bing Speech API key?");
}
var outputFormatValue = this._getFormatValue(outputFormat);
optionalHeaders = [{ name: "Content-type", value: 'application/ssml+xml' },
{ name: "X-Microsoft-OutputFormat", value: outputFormatValue },
{ name: "Authorization", value: resultsText },
{ name: "X-Search-AppIde", value: '07D3234E49CE426DAA29772419F436CA' },
{ name: "X-Search-ClientID", value: '1ECFAE91408841A480F00935DC390960' },
{ name: "Ocp-Apim-Subscription-Key", value: this._apiKey }]
var SSML = this.makeSSML(text, locale);
try {
var blobReponse = await this._makeHttpRequest("POST", "https://speech.platform.bing.com/synthesize", true, optionalHeaders, SSML);
}
catch (ex) {
console.warn("Error while calling Bing Speech API. Ignoring this item: '" + text + "'");
}
this._requestsInProgress--;
// ---------------------------------------------
// In case of multiple XHR, we can reach this line by anytime
// that's why we kept a copy of the speech item index to remember its order in the queue
let indexInQueue = this._waitingQueueIndex.indexOf(speechItemIndex);
let nextIndex = indexInQueue + 1;
// If we had data back, it will be added to the queue to be decoded & play later
if (blobReponse) {
this._waitingQueue[indexInQueue].data = blobReponse;
this._waitingQueue[indexInQueue].isReadyToPlay = true;
}
// If not, in case of error or timeout for instance,
// we will simply ignore this speech item and remove it from the queue
else {
this._waitingQueue.splice(indexInQueue, 1);
this._waitingQueueIndex.splice(indexInQueue, 1);
nextIndex--;
}
// If mono-XHR, let's at least launch the next XHR in background while playing this text
if (!this.multipleXHR && (nextIndex < this._waitingQueue.length)) {
this._getBingSpeechData(this._waitingQueue[nextIndex].text, this._waitingQueue[nextIndex].locale, this._waitingQueue[nextIndex].outputFormat, this._waitingQueue[nextIndex].index);
}
if (!this._playing) {
this._play();
}
}
private _play() {
// Checking the next speech item to handle
var speechItem = this._waitingQueue[0];
if (!speechItem) {
return;
}
// If it's not ready yet, let's wait for 100ms more
if (!speechItem.isReadyToPlay) {
window.setTimeout(() => {
this._play();
}, 100);
return;
}
// If it's ready to be decoded & played
if (!this._playing) {
this._playing = true;
this._audioContext.decodeAudioData(speechItem.data, (buffer) => {
var source = this._audioContext.createBufferSource();
source.buffer = buffer;
source.connect(this._audioContext.destination);
source.start(0);
source.onended = (evt: Event) => {
this._playing = false;
this._waitingQueue.splice(0, 1);
this._waitingQueueIndex.splice(0, 1);
if (speechItem.callback) {
speechItem.callback();
}
if (this._waitingQueue.length > 0) {
this._play();
}
else {
this._nbWaitingItems = 0;
}
};
});
}
}
private _getFormatValue(outputFormat: OutputFormat): OutputFormatValues {
var outputFormatValue;
switch (outputFormat) {
case OutputFormat.Raw16khz16bit:
outputFormatValue = "raw-16khz-16bit-mono-pcm";
break;
case OutputFormat.Raw8khz8bit:
outputFormatValue = "raw-8khz-8bit-mono-mulaw";
break;
case OutputFormat.Riff16khz16bit:
outputFormatValue = "riff-16khz-16bit-mono-pcm";
break;
case OutputFormat.Riff8khz8bit:
outputFormatValue = "riff-8khz-8bit-mono-mulaw";
break;
default:
outputFormatValue = "riff-16khz-16bit-mono-pcm";
}
return outputFormatValue;
}
private makeSSML(text: string, localeAsked: SupportedLocales): string {
var locale: string;
var gender: string;
var supportedLocaleValue: SupportedLocalesValues;
var SSML: string = "<speak version='1.0' xml:lang=";
if (!localeAsked) {
localeAsked = this._globalLocale;
}
switch (localeAsked) {
case SupportedLocales.arEG_Female:
locale = "'ar-eg'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (ar-EG, Hoda)";
break;
case SupportedLocales.deDE_Female:
locale = "'de-de'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (de-DE, Hedda)";
break;
case SupportedLocales.deDE_Male:
locale = "'de-de'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (de-DE, Stefan, Apollo)";
break;
case SupportedLocales.enAU_Female:
locale = "'en-au'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-AU, Catherine)";
break;
case SupportedLocales.enCA_Female:
locale = "'en-ca'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-CA, Linda)";
break;
case SupportedLocales.enGB_Female:
locale = "'en-gb'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-GB, Susan, Apollo)";
break;
case SupportedLocales.enGB_Male:
locale = "'en-gb'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-GB, George, Apollo)";
break;
case SupportedLocales.enIN_Male:
locale = "'en-in'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-IN, Ravi, Apollo)";
break;
case SupportedLocales.enUS_Female:
locale = "'en-us'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-US, ZiraRUS)";
break;
case SupportedLocales.enUS_Male:
locale = "'en-us'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-US, BenjaminRUS)";
break;
case SupportedLocales.esES_Female:
locale = "'es-es'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (es-ES, Laura, Apollo)";
break;
case SupportedLocales.esES_Male:
locale = "'es-es'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (es-ES, Pablo, Apollo)";
break;
case SupportedLocales.esMX_Male:
locale = "'es-mx'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (es-MX, Raul, Apollo)";
break;
case SupportedLocales.frCA_Female:
locale = "'fr-ca'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (fr-CA, Caroline)";
break;
case SupportedLocales.frFR_Female:
locale = "'fr-fr'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (fr-FR, Julie, Apollo)";
break;
case SupportedLocales.frFR_Male:
locale = "'fr-fr'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (fr-FR, Paul, Apollo)";
break;
case SupportedLocales.itIT_Male:
locale = "'it-it'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (it-IT, Cosimo, Apollo)";
break;
case SupportedLocales.jpJP_Female:
locale = "'jp-jp'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (ja-JP, Ayumi, Apollo)";
break;
case SupportedLocales.jpJP_Male:
locale = "'jp-jp'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (ja-JP, Ichiro, Apollo)";
break;
case SupportedLocales.ptBR_Male:
locale = "'pt-br'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (pt-BR, Daniel, Apollo)";
break;
case SupportedLocales.ruRU_Female:
locale = "'ru-ru'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (ru-RU, Irina, Apollo)";
break;
case SupportedLocales.ruRU_Male:
locale = "'ru-ru'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (ru-RU, Pavel, Apollo)";
break;
case SupportedLocales.zhCN_Female:
locale = "'zh-cn'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (zh-CN, HuihuiRUS)";
break;
case SupportedLocales.zhCN_Female2:
locale = "'zh-cn'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (zh-CN, Yaoyao, Apollo)";
break;
case SupportedLocales.zhCN_Male:
locale = "'zh-cn'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (zh-CN, Kangkang, Apollo)";
break;
case SupportedLocales.zhHK_Female:
locale = "'zh-hk'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (zh-HK, Tracy, Apollo)";
break;
case SupportedLocales.zhHK_Male:
locale = "'zh-hk'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (zh-HK, Danny, Apollo)";
break;
case SupportedLocales.zhTW_Female:
locale = "'zh-tw'";
gender = "'Female'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (zh-TW, Yating, Apollo)";
break;
case SupportedLocales.zhTW_Male:
locale = "'zh-tw'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (zh-TW, Zhiwei, Apollo)";
break;
default:
locale = "'en-us'";
gender = "'Male'";
supportedLocaleValue = "Microsoft Server Speech Text to Speech Voice (en-US, BenjaminRUS)";
}
SSML += locale + "><voice xml:lang=" + locale + " xml:gender=" + gender + " name='" + supportedLocaleValue + "'>" + `${text.encodeHTML()}` + "</voice></speak>" ;
return SSML;
}
}
}
interface Window {
AudioContext(func: any): any;
webkitAudioContext(func: any): any;
}
interface String {
encodeHTML;
}
if (!String.prototype.encodeHTML) {
String.prototype.encodeHTML = function () {
return this.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/"/g, '"')
.replace(/'/g, ''');
};
}