voiceRSS.js

// VoiceRSS Javascript SDK
var VoiceRSS={
    speech:function(e){this._validate(e),this._request(e)},
    _validate:function(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()){
            var 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:function(e){
        var 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;
                // new Audio(t.responseText).play()}},
                audioElement.src=t.responseText,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:function(e){
        var a=e.c&&"auto"!=e.c.toLowerCase()?e.c:this._detectCodec();
        return"key="+(e.key||"")+"&src="+(e.src||"")+"&hl="+(e.hl||"")+"&v="+(e.v||"")+"&r="+(e.r||"")+"&c="+(a||"")+"&f="+(e.f||"")+"&ssml="+(e.ssml||"")+"&b64=true"
    },
    _detectCodec:function(){
        var 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:function(){
        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"
    }
};