scratch-vm/playground/soundfont-player.min.js

(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){"use strict";var load=require("audio-loader");var player=require("sample-player");function instrument(ac,name,options){if(arguments.length===1)return function(n,o){return instrument(ac,n,o)};var opts=options||{};var isUrl=opts.isSoundfontURL||isSoundfontURL;var toUrl=opts.nameToUrl||nameToUrl;var url=isUrl(name)?name:toUrl(name,opts.soundfont,opts.format);return load(ac,url,{only:opts.only||opts.notes}).then(function(buffers){var p=player(ac,buffers,opts).connect(ac.destination);p.url=url;p.name=name;return p})}function isSoundfontURL(name){return/\.js(\?.*)?$/i.test(name)}function nameToUrl(name,sf,format){format=format==="ogg"?format:"mp3";sf=sf==="FluidR3_GM"?sf:"MusyngKite";return"https://gleitz.github.io/midi-js-soundfonts/"+sf+"/"+name+"-"+format+".js"}var Soundfont=require("./legacy");Soundfont.instrument=instrument;Soundfont.nameToUrl=nameToUrl;if(typeof module==="object"&&module.exports)module.exports=Soundfont;if(typeof window!=="undefined")window.Soundfont=Soundfont},{"./legacy":2,"audio-loader":5,"sample-player":8}],2:[function(require,module,exports){"use strict";var parser=require("note-parser");function Soundfont(ctx,nameToUrl){console.warn("new Soundfont() is deprected");console.log("Please use Soundfont.instrument() instead of new Soundfont().instrument()");if(!(this instanceof Soundfont))return new Soundfont(ctx);this.nameToUrl=nameToUrl||Soundfont.nameToUrl;this.ctx=ctx;this.instruments={};this.promises=[]}Soundfont.prototype.onready=function(callback){console.warn("deprecated API");console.log("Please use Promise.all(Soundfont.instrument(), Soundfont.instrument()).then() instead of new Soundfont().onready()");Promise.all(this.promises).then(callback)};Soundfont.prototype.instrument=function(name,options){console.warn("new Soundfont().instrument() is deprecated.");console.log("Please use Soundfont.instrument() instead.");var ctx=this.ctx;name=name||"default";if(name in this.instruments)return this.instruments[name];var inst={name:name,play:oscillatorPlayer(ctx,options)};this.instruments[name]=inst;if(name!=="default"){var promise=Soundfont.instrument(ctx,name,options).then(function(instrument){inst.play=instrument.play;return inst});this.promises.push(promise);inst.onready=function(cb){console.warn("onready is deprecated. Use Soundfont.instrument().then()");promise.then(cb)}}else{inst.onready=function(cb){console.warn("onready is deprecated. Use Soundfont.instrument().then()");cb()}}return inst};function loadBuffers(ac,name,options){console.warn("Soundfont.loadBuffers is deprecate.");console.log("Use Soundfont.instrument(..) and get buffers properties from the result.");return Soundfont.instrument(ac,name,options).then(function(inst){return inst.buffers})}Soundfont.loadBuffers=loadBuffers;function oscillatorPlayer(ctx,defaultOptions){defaultOptions=defaultOptions||{};return function(note,time,duration,options){console.warn("The oscillator player is deprecated.");console.log("Starting with version 0.9.0 you will have to wait until the soundfont is loaded to play sounds.");var midi=note>0&&note<129?+note:parser.midi(note);var freq=midi?parser.midiToFreq(midi,440):null;if(!freq)return;duration=duration||.2;options=options||{};var destination=options.destination||defaultOptions.destination||ctx.destination;var vcoType=options.vcoType||defaultOptions.vcoType||"sine";var gain=options.gain||defaultOptions.gain||.4;var vco=ctx.createOscillator();vco.type=vcoType;vco.frequency.value=freq;var vca=ctx.createGain();vca.gain.value=gain;vco.connect(vca);vca.connect(destination);vco.start(time);if(duration>0)vco.stop(time+duration);return vco}}Soundfont.noteToMidi=parser.midi;module.exports=Soundfont},{"note-parser":6}],3:[function(require,module,exports){"use strict";function b64ToUint6(nChr){return nChr>64&&nChr<91?nChr-65:nChr>96&&nChr<123?nChr-71:nChr>47&&nChr<58?nChr+4:nChr===43?62:nChr===47?63:0}function decode(sBase64,nBlocksSize){var sB64Enc=sBase64.replace(/[^A-Za-z0-9\+\/]/g,"");var nInLen=sB64Enc.length;var nOutLen=nBlocksSize?Math.ceil((nInLen*3+1>>2)/nBlocksSize)*nBlocksSize:nInLen*3+1>>2;var taBytes=new Uint8Array(nOutLen);for(var nMod3,nMod4,nUint24=0,nOutIdx=0,nInIdx=0;nInIdx<nInLen;nInIdx++){nMod4=nInIdx&3;nUint24|=b64ToUint6(sB64Enc.charCodeAt(nInIdx))<<18-6*nMod4;if(nMod4===3||nInLen-nInIdx===1){for(nMod3=0;nMod3<3&&nOutIdx<nOutLen;nMod3++,nOutIdx++){taBytes[nOutIdx]=nUint24>>>(16>>>nMod3&24)&255}nUint24=0}}return taBytes}module.exports={decode:decode}},{}],4:[function(require,module,exports){"use strict";module.exports=function(url,type){return new Promise(function(done,reject){var req=new XMLHttpRequest;if(type)req.responseType=type;req.open("GET",url);req.onload=function(){req.status===200?done(req.response):reject(Error(req.statusText))};req.onerror=function(){reject(Error("Network Error"))};req.send()})}},{}],5:[function(require,module,exports){"use strict";var base64=require("./base64");var fetch=require("./fetch");function fromRegex(r){return function(o){return typeof o==="string"&&r.test(o)}}function prefix(pre,name){return typeof pre==="string"?pre+name:typeof pre==="function"?pre(name):name}function load(ac,source,options,defVal){var loader=isArrayBuffer(source)?loadArrayBuffer:isAudioFileName(source)?loadAudioFile:isPromise(source)?loadPromise:isArray(source)?loadArrayData:isObject(source)?loadObjectData:isJsonFileName(source)?loadJsonFile:isBase64Audio(source)?loadBase64Audio:isJsFileName(source)?loadMidiJSFile:null;var opts=options||{};return loader?loader(ac,source,opts):defVal?Promise.resolve(defVal):Promise.reject("Source not valid ("+source+")")}load.fetch=fetch;function isArrayBuffer(o){return o instanceof ArrayBuffer}function loadArrayBuffer(ac,array,options){return new Promise(function(done,reject){ac.decodeAudioData(array,function(buffer){done(buffer)},function(){reject("Can't decode audio data ("+array.slice(0,30)+"...)")})})}var isAudioFileName=fromRegex(/\.(mp3|wav|ogg)(\?.*)?$/i);function loadAudioFile(ac,name,options){var url=prefix(options.from,name);return load(ac,load.fetch(url,"arraybuffer"),options)}function isPromise(o){return o&&typeof o.then==="function"}function loadPromise(ac,promise,options){return promise.then(function(value){return load(ac,value,options)})}var isArray=Array.isArray;function loadArrayData(ac,array,options){return Promise.all(array.map(function(data){return load(ac,data,options,data)}))}function isObject(o){return o&&typeof o==="object"}function loadObjectData(ac,obj,options){var dest={};var promises=Object.keys(obj).map(function(key){if(options.only&&options.only.indexOf(key)===-1)return null;var value=obj[key];return load(ac,value,options,value).then(function(audio){dest[key]=audio})});return Promise.all(promises).then(function(){return dest})}var isJsonFileName=fromRegex(/\.json(\?.*)?$/i);function loadJsonFile(ac,name,options){var url=prefix(options.from,name);return load(ac,load.fetch(url,"text").then(JSON.parse),options)}var isBase64Audio=fromRegex(/^data:audio/);function loadBase64Audio(ac,source,options){var i=source.indexOf(",");return load(ac,base64.decode(source.slice(i+1)).buffer,options)}var isJsFileName=fromRegex(/\.js(\?.*)?$/i);function loadMidiJSFile(ac,name,options){var url=prefix(options.from,name);return load(ac,load.fetch(url,"text").then(midiJsToJson),options)}function midiJsToJson(data){var begin=data.indexOf("MIDI.Soundfont.");if(begin<0)throw Error("Invalid MIDI.js Soundfont format");begin=data.indexOf("=",begin)+2;var end=data.lastIndexOf(",");return JSON.parse(data.slice(begin,end)+"}")}if(typeof module==="object"&&module.exports)module.exports=load;if(typeof window!=="undefined")window.loadAudio=load},{"./base64":3,"./fetch":4}],6:[function(require,module,exports){"use strict";function fillStr(s,num){return Array(num+1).join(s)}function isNum(x){return typeof x==="number"}function isStr(x){return typeof x==="string"}function isDef(x){return typeof x!=="undefined"}function midiToFreq(midi,tuning){return Math.pow(2,(midi-69)/12)*(tuning||440)}var REGEX=/^([a-gA-G])(#{1,}|b{1,}|x{1,}|)(-?\d*)\s*(.*)\s*$/;function regex(){return REGEX}var SEMITONES=[0,2,4,5,7,9,11];function parse(str,isTonic,tuning){if(typeof str!=="string")return null;var m=REGEX.exec(str);if(!m||!isTonic&&m[4])return null;var p={letter:m[1].toUpperCase(),acc:m[2].replace(/x/g,"##")};p.pc=p.letter+p.acc;p.step=(p.letter.charCodeAt(0)+3)%7;p.alt=p.acc[0]==="b"?-p.acc.length:p.acc.length;var pos=SEMITONES[p.step]+p.alt;p.chroma=pos<0?12+pos:pos%12;if(m[3]){p.oct=+m[3];p.midi=pos+12*(p.oct+1);p.freq=midiToFreq(p.midi,tuning)}if(isTonic)p.tonicOf=m[4];return p}var LETTERS="CDEFGAB";function acc(n){return!isNum(n)?"":n<0?fillStr("b",-n):fillStr("#",n)}function oct(n){return!isNum(n)?"":""+n}function build(s,a,o){if(s===null||typeof s==="undefined")return null;if(s.step)return build(s.step,s.alt,s.oct);if(s<0||s>6)return null;return LETTERS.charAt(s)+acc(a)+oct(o)}function midi(note){if((isNum(note)||isStr(note))&&note>=0&&note<128)return+note;var p=parse(note);return p&&isDef(p.midi)?p.midi:null}function freq(note,tuning){var m=midi(note);return m===null?null:midiToFreq(m,tuning)}var parser={parse:parse,build:build,regex:regex,midi:midi,freq:freq};var FNS=["letter","acc","pc","step","alt","chroma","oct"];FNS.forEach(function(name){parser[name]=function(src){var p=parse(src);return p&&isDef(p[name])?p[name]:null}});module.exports=parser},{}],7:[function(require,module,exports){module.exports=function(player){player.on=function(event,cb){if(arguments.length===1&&typeof event==="function")return player.on("event",event);var prop="on"+event;var old=player[prop];player[prop]=old?chain(old,cb):cb;return player};return player};function chain(fn1,fn2){return function(a,b,c,d){fn1(a,b,c,d);fn2(a,b,c,d)}}},{}],8:[function(require,module,exports){"use strict";var player=require("./player");var events=require("./events");var notes=require("./notes");var scheduler=require("./scheduler");var midi=require("./midi");function SamplePlayer(ac,source,options){return midi(scheduler(notes(events(player(ac,source,options)))))}if(typeof module==="object"&&module.exports)module.exports=SamplePlayer;if(typeof window!=="undefined")window.SamplePlayer=SamplePlayer},{"./events":7,"./midi":9,"./notes":10,"./player":11,"./scheduler":12}],9:[function(require,module,exports){var midimessage=require("midimessage");module.exports=function(player){player.listenToMidi=function(input,options){var started={};var opts=options||{};var gain=opts.gain||function(vel){return vel/127};input.onmidimessage=function(msg){var mm=msg.messageType?msg:midimessage(msg);if(mm.messageType==="noteon"&&mm.velocity===0){mm.messageType="noteoff"}if(opts.channel&&mm.channel!==opts.channel)return;switch(mm.messageType){case"noteon":started[mm.key]=player.play(mm.key,0,{gain:gain(mm.velocity)});break;case"noteoff":if(started[mm.key]){started[mm.key].stop();delete started[mm.key]}break}};return player};return player}},{midimessage:14}],10:[function(require,module,exports){"use strict";var note=require("note-parser");var isMidi=function(n){return n!==null&&n!==[]&&n>=0&&n<129};var toMidi=function(n){return isMidi(n)?+n:note.midi(n)};module.exports=function(player){if(player.buffers){var map=player.opts.map;var toKey=typeof map==="function"?map:toMidi;var mapper=function(name){return name?toKey(name)||name:null};player.buffers=mapBuffers(player.buffers,mapper);var start=player.start;player.start=function(name,when,options){var key=mapper(name);var dec=key%1;if(dec){key=Math.floor(key);options=Object.assign(options||{},{cents:Math.floor(dec*100)})}return start(key,when,options)}}return player};function mapBuffers(buffers,toKey){return Object.keys(buffers).reduce(function(mapped,name){mapped[toKey(name)]=buffers[name];return mapped},{})}},{"note-parser":6}],11:[function(require,module,exports){"use strict";var ADSR=require("adsr");var EMPTY={};var DEFAULTS={gain:1,attack:.01,decay:.1,sustain:.9,release:.3,loop:false,cents:0,loopStart:0,loopEnd:0};function SamplePlayer(ac,source,options){var connected=false;var nextId=0;var tracked={};var out=ac.createGain();out.gain.value=1;var opts=Object.assign({},DEFAULTS,options);var player={ac:ac,out:out,opts:opts};if(source instanceof AudioBuffer)player.buffer=source;else player.buffers=source;player.start=function(name,when,options){if(player.buffer&&name!==null)return player.start(null,name,when);var buffer=name?player.buffers[name]:player.buffer;if(!buffer){console.warn("Buffer "+name+" not found.");return}else if(!connected){console.warn("SamplePlayer not connected to any node.");return}var opts=options||EMPTY;when=when||ac.currentTime;player.emit("start",when,name,opts);var node=createNode(name,buffer,opts);node.id=track(name,node);node.env.start(when);node.source.start(when);player.emit("started",when,node.id,node);if(opts.duration)node.stop(when+opts.duration);return node};player.play=function(n,w,o){player.start(n,w,o)};player.stop=function(when,ids){var node;ids=ids||Object.keys(tracked);return ids.map(function(id){node=tracked[id];if(!node)return null;node.stop(when);return node.id})};player.connect=function(dest){connected=true;out.connect(dest);return player};player.emit=function(event,when,obj,opts){if(player.onevent)player.onevent(event,when,obj,opts);var fn=player["on"+event];if(fn)fn(when,obj,opts)};return player;function track(name,node){node.id=nextId++;tracked[node.id]=node;node.source.onended=function(){var now=ac.currentTime;node.source.disconnect();node.env.disconnect();node.disconnect();player.emit("ended",now,node.id,node)};return node.id}function createNode(name,buffer,options){var node=ac.createGain();node.gain.value=0;node.connect(out);node.env=envelope(ac,options,opts);node.env.connect(node.gain);node.source=ac.createBufferSource();node.source.buffer=buffer;node.source.connect(node);node.source.loop=options.loop||opts.loop;node.source.playbackRate.value=centsToRate(options.cents||opts.cents);node.source.loopStart=options.loopStart||opts.loopStart;node.source.loopEnd=options.loopEnd||opts.loopEnd;node.stop=function(when){var time=when||ac.currentTime;player.emit("stop",time,name);var stopAt=node.env.stop(time);node.source.stop(stopAt)};return node}}var PARAMS=["attack","decay","sustain","release"];function envelope(ac,options,opts){var env=ADSR(ac);var adsr=options.adsr||opts.adsr;PARAMS.forEach(function(name,i){if(adsr)env[name]=adsr[i];else env[name]=options[name]||opts[name]});env.value.value=options.gain||opts.gain;return env}function centsToRate(cents){return cents?Math.pow(2,cents/1200):1}module.exports=SamplePlayer},{adsr:13}],12:[function(require,module,exports){"use strict";var isArr=Array.isArray;var isObj=function(o){return o&&typeof o==="object"};var OPTS={};module.exports=function(player){player.schedule=function(time,events){var now=player.ac.currentTime;var when=time<now?now:time;player.emit("schedule",when,events);var t,o,note,opts;return events.map(function(event){if(!event)return null;else if(isArr(event)){t=event[0];o=event[1]}else{t=event.time;o=event}if(isObj(o)){note=o.name||o.key||o.note||o.midi||null;opts=o}else{note=o;opts=OPTS}return player.start(note,when+(t||0),opts)})};return player}},{}],13:[function(require,module,exports){module.exports=ADSR;function ADSR(audioContext){var node=audioContext.createGain();var voltage=node._voltage=getVoltage(audioContext);var value=scale(voltage);var startValue=scale(voltage);var endValue=scale(voltage);node._startAmount=scale(startValue);node._endAmount=scale(endValue);node._multiplier=scale(value);node._multiplier.connect(node);node._startAmount.connect(node);node._endAmount.connect(node);node.value=value.gain;node.startValue=startValue.gain;node.endValue=endValue.gain;node.startValue.value=0;node.endValue.value=0;Object.defineProperties(node,props);return node}var props={attack:{value:0,writable:true},decay:{value:0,writable:true},sustain:{value:1,writable:true},release:{value:0,writable:true},getReleaseDuration:{value:function(){return this.release}},start:{value:function(at){var target=this._multiplier.gain;var startAmount=this._startAmount.gain;var endAmount=this._endAmount.gain;this._voltage.start(at);this._decayFrom=this._decayFrom=at+this.attack;this._startedAt=at;var sustain=this.sustain;target.cancelScheduledValues(at);startAmount.cancelScheduledValues(at);endAmount.cancelScheduledValues(at);endAmount.setValueAtTime(0,at);if(this.attack){target.setValueAtTime(0,at);target.linearRampToValueAtTime(1,at+this.attack);startAmount.setValueAtTime(1,at);startAmount.linearRampToValueAtTime(0,at+this.attack)}else{target.setValueAtTime(1,at);startAmount.setValueAtTime(0,at)}if(this.decay){target.setTargetAtTime(sustain,this._decayFrom,getTimeConstant(this.decay))}}},stop:{value:function(at,isTarget){if(isTarget){at=at-this.release}var endTime=at+this.release;if(this.release){var target=this._multiplier.gain;var startAmount=this._startAmount.gain;var endAmount=this._endAmount.gain;target.cancelScheduledValues(at);startAmount.cancelScheduledValues(at);endAmount.cancelScheduledValues(at);var expFalloff=getTimeConstant(this.release);if(this.attack&&at<this._decayFrom){var valueAtTime=getValue(0,1,this._startedAt,this._decayFrom,at);target.linearRampToValueAtTime(valueAtTime,at);startAmount.linearRampToValueAtTime(1-valueAtTime,at);startAmount.setTargetAtTime(0,at,expFalloff)}endAmount.setTargetAtTime(1,at,expFalloff);target.setTargetAtTime(0,at,expFalloff)}this._voltage.stop(endTime);return endTime}},onended:{get:function(){return this._voltage.onended},set:function(value){this._voltage.onended=value}}};var flat=new Float32Array([1,1]);function getVoltage(context){var voltage=context.createBufferSource();var buffer=context.createBuffer(1,2,context.sampleRate);buffer.getChannelData(0).set(flat);voltage.buffer=buffer;voltage.loop=true;return voltage}function scale(node){var gain=node.context.createGain();node.connect(gain);return gain}function getTimeConstant(time){return Math.log(time+1)/Math.log(100)}function getValue(start,end,fromTime,toTime,at){var difference=end-start;var time=toTime-fromTime;var truncateTime=at-fromTime;var phase=truncateTime/time;var value=start+phase*difference;if(value<=start){value=start}if(value>=end){value=end}return value}},{}],14:[function(require,module,exports){(function(global){(function(e){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=e()}else if(typeof define==="function"&&define.amd){define([],e)}else{var t;if(typeof window!=="undefined"){t=window}else if(typeof global!=="undefined"){t=global}else if(typeof self!=="undefined"){t=self}else{t=this}t.midimessage=e()}})(function(){var e,t,s;return function o(e,t,s){function a(n,i){if(!t[n]){if(!e[n]){var l=typeof require=="function"&&require;if(!i&&l)return l(n,!0);if(r)return r(n,!0);var h=new Error("Cannot find module '"+n+"'");throw h.code="MODULE_NOT_FOUND",h}var c=t[n]={exports:{}};e[n][0].call(c.exports,function(t){var s=e[n][1][t];return a(s?s:t)},c,c.exports,o,e,t,s)}return t[n].exports}var r=typeof require=="function"&&require;for(var n=0;n<s.length;n++)a(s[n]);return a}({1:[function(e,t,s){"use strict";Object.defineProperty(s,"__esModule",{value:true});s["default"]=function(e){function t(e){this._event=e;this._data=e.data;this.receivedTime=e.receivedTime;if(this._data&&this._data.length<2){console.warn("Illegal MIDI message of length",this._data.length);return}this._messageCode=e.data[0]&240;this.channel=e.data[0]&15;switch(this._messageCode){case 128:this.messageType="noteoff";this.key=e.data[1]&127;this.velocity=e.data[2]&127;break;case 144:this.messageType="noteon";this.key=e.data[1]&127;this.velocity=e.data[2]&127;break;case 160:this.messageType="keypressure";this.key=e.data[1]&127;this.pressure=e.data[2]&127;break;case 176:this.messageType="controlchange";this.controllerNumber=e.data[1]&127;this.controllerValue=e.data[2]&127;if(this.controllerNumber===120&&this.controllerValue===0){this.channelModeMessage="allsoundoff"}else if(this.controllerNumber===121){this.channelModeMessage="resetallcontrollers"}else if(this.controllerNumber===122){if(this.controllerValue===0){this.channelModeMessage="localcontroloff"}else{this.channelModeMessage="localcontrolon"}}else if(this.controllerNumber===123&&this.controllerValue===0){this.channelModeMessage="allnotesoff"}else if(this.controllerNumber===124&&this.controllerValue===0){this.channelModeMessage="omnimodeoff"}else if(this.controllerNumber===125&&this.controllerValue===0){this.channelModeMessage="omnimodeon"}else if(this.controllerNumber===126){this.channelModeMessage="monomodeon"}else if(this.controllerNumber===127){this.channelModeMessage="polymodeon"}break;case 192:this.messageType="programchange";this.program=e.data[1];break;case 208:this.messageType="channelpressure";this.pressure=e.data[1]&127;break;case 224:this.messageType="pitchbendchange";var t=e.data[2]&127;var s=e.data[1]&127;this.pitchBend=(t<<8)+s;break}}return new t(e)};t.exports=s["default"]},{}]},{},[1])(1)})}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{}]},{},[1]);