voiceRSS.js

// VoiceRSS Javascript SDK
const VoiceRSS={speech(e){this._validate(e),this._request(e)},_validate(e){if(!e)throw"The settings are undefined";if(!e.key)throw"The API key is undefined";if(!e.src)throw"The text is undefined";if(!e.hl)throw"The language is undefined";if(e.c&&"auto"!=e.c.toLowerCase()){let a=!1;switch(e.c.toLowerCase()){case"mp3":a=(new Audio).canPlayType("audio/mpeg").replace("no","");break;case"wav":a=(new Audio).canPlayType("audio/wav").replace("no","");break;case"aac":a=(new Audio).canPlayType("audio/aac").replace("no","");break;case"ogg":a=(new Audio).canPlayType("audio/ogg").replace("no","");break;case"caf":a=(new Audio).canPlayType("audio/x-caf").replace("no","")}if(!a)throw`The browser does not support the audio codec ${e.c}`}},_request(e){const a=this._buildRequest(e),t=this._getXHR();t.onreadystatechange=function(){if(4==t.readyState&&200==t.status){if(0==t.responseText.indexOf("ERROR"))throw t.responseText;let e=t.responseText;audioElement.src=e,audioElement.onloadedmetadata=(()=>{audioElement.play()})}},t.open("POST","https://api.voicerss.org/",!0),t.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8"),t.send(a)},_buildRequest(e){const a=e.c&&"auto"!=e.c.toLowerCase()?e.c:this._detectCodec();return`key=${e.key||""}&src=${e.src||""}&hl=${e.hl||""}&r=${e.r||""}&c=${a||""}&f=${e.f||""}&ssml=${e.ssml||""}&b64=true`},_detectCodec(){const e=new Audio;return e.canPlayType("audio/mpeg").replace("no","")?"mp3":e.canPlayType("audio/wav").replace("no","")?"wav":e.canPlayType("audio/aac").replace("no","")?"aac":e.canPlayType("audio/ogg").replace("no","")?"ogg":e.canPlayType("audio/x-caf").replace("no","")?"caf":""},_getXHR(){try{return new XMLHttpRequest}catch(e){}try{return new ActiveXObject("Msxml3.XMLHTTP")}catch(e){}try{return new ActiveXObject("Msxml2.XMLHTTP.6.0")}catch(e){}try{return new ActiveXObject("Msxml2.XMLHTTP.3.0")}catch(e){}try{return new ActiveXObject("Msxml2.XMLHTTP")}catch(e){}try{return new ActiveXObject("Microsoft.XMLHTTP")}catch(e){}throw"The browser does not support HTTP request"}};