HuajiMidi/midi.min.js

if("undefined"==typeof MIDI&&(MIDI={}),function(e){"use strict";var n={},t=0,r=function(e){t++;var r=document.body,o=new Audio,i=e.split(";")[0];o.id="audio",o.setAttribute("preload","auto"),o.setAttribute("audiobuffer",!0),o.addEventListener("error",function(){r.removeChild(o),n[i]=!1,t--},!1),o.addEventListener("canplaythrough",function(){r.removeChild(o),n[i]=!0,t--},!1),o.src="data:"+e,r.appendChild(o)};e.audioDetect=function(e){if(navigator.requestMIDIAccess){var o=Function.prototype.toString.call(navigator.requestMIDIAccess).indexOf("[native code]");if(o)n.webmidi=!0;else for(var i=0;navigator.plugins.length>i;i++){var a=navigator.plugins[i];a.name.indexOf("Jazz-Plugin")>=0&&(n.webmidi=!0)}}if("undefined"==typeof Audio)return e({});n.audiotag=!0,(window.AudioContext||window.webkitAudioContext)&&(n.webaudio=!0);var u=new Audio;if(u.canPlayType===void 0)return e(n);var s=u.canPlayType('audio/ogg; codecs="vorbis"');s="probably"===s||"maybe"===s;var c=u.canPlayType("audio/mpeg");if(c="probably"===c||"maybe"===c,!s&&!c)return e(n),void 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l=(new Date).getTime(),d=window.setInterval(function(){var r=(new Date).getTime(),o=r-l>5e3;(!t||o)&&(window.clearInterval(d),e(n))},1)}}(MIDI),function(e){"use strict";e.GM=function(e){var n=function(e){return e.replace(/[^a-z0-9 ]/gi,"").replace(/[ ]/g,"_").toLowerCase()},t={byName:{},byId:{},byCategory:{}};for(var r in e)for(var o=e[r],i=0,a=o.length;a>i;i++){var u=o[i];if(u){var s=parseInt(u.substr(0,u.indexOf(" ")),10);u=u.replace(s+" ",""),t.byId[--s]=t.byName[n(u)]=t.byCategory[n(r)]={id:n(u),instrument:u,number:s,category:r}}}return t}({Piano:["1 Acoustic Grand Piano","2 Bright Acoustic Piano","3 Electric Grand Piano","4 Honky-tonk Piano","5 Electric Piano 1","6 Electric Piano 2","7 Harpsichord","8 Clavinet"],"Chromatic Percussion":["9 Celesta","10 Glockenspiel","11 Music Box","12 Vibraphone","13 Marimba","14 Xylophone","15 Tubular Bells","16 Dulcimer"],Organ:["17 Drawbar Organ","18 Percussive Organ","19 Rock Organ","20 Church Organ","21 Reed Organ","22 Accordion","23 Harmonica","24 Tango Accordion"],Guitar:["25 Acoustic Guitar (nylon)","26 Acoustic Guitar (steel)","27 Electric Guitar (jazz)","28 Electric Guitar (clean)","29 Electric Guitar (muted)","30 Overdriven Guitar","31 Distortion Guitar","32 Guitar Harmonics"],Bass:["33 Acoustic Bass","34 Electric Bass (finger)","35 Electric Bass (pick)","36 Fretless Bass","37 Slap Bass 1","38 Slap Bass 2","39 Synth Bass 1","40 Synth Bass 2"],Strings:["41 Violin","42 Viola","43 Cello","44 Contrabass","45 Tremolo Strings","46 Pizzicato Strings","47 Orchestral Harp","48 Timpani"],Ensemble:["49 String Ensemble 1","50 String Ensemble 2","51 Synth Strings 1","52 Synth Strings 2","53 Choir Aahs","54 Voice Oohs","55 Synth Choir","56 Orchestra Hit"],Brass:["57 Trumpet","58 Trombone","59 Tuba","60 Muted Trumpet","61 French Horn","62 Brass Section","63 Synth Brass 1","64 Synth Brass 2"],Reed:["65 Soprano Sax","66 Alto Sax","67 Tenor Sax","68 Baritone Sax","69 Oboe","70 English Horn","71 Bassoon","72 Clarinet"],Pipe:["73 Piccolo","74 Flute","75 Recorder","76 Pan Flute","77 Blown Bottle","78 Shakuhachi","79 Whistle","80 Ocarina"],"Synth Lead":["81 Lead 1 (square)","82 Lead 2 (sawtooth)","83 Lead 3 (calliope)","84 Lead 4 (chiff)","85 Lead 5 (charang)","86 Lead 6 (voice)","87 Lead 7 (fifths)","88 Lead 8 (bass + lead)"],"Synth Pad":["89 Pad 1 (new age)","90 Pad 2 (warm)","91 Pad 3 (polysynth)","92 Pad 4 (choir)","93 Pad 5 (bowed)","94 Pad 6 (metallic)","95 Pad 7 (halo)","96 Pad 8 (sweep)"],"Synth Effects":["97 FX 1 (rain)","98 FX 2 (soundtrack)","99 FX 3 (crystal)","100 FX 4 (atmosphere)","101 FX 5 (brightness)","102 FX 6 (goblins)","103 FX 7 (echoes)","104 FX 8 (sci-fi)"],Ethnic:["105 Sitar","106 Banjo","107 Shamisen","108 Koto","109 Kalimba","110 Bagpipe","111 Fiddle","112 Shanai"],Percussive:["113 Tinkle Bell","114 Agogo","115 Steel Drums","116 Woodblock","117 Taiko Drum","118 Melodic Tom","119 Synth Drum"],"Sound effects":["120 Reverse Cymbal","121 Guitar Fret Noise","122 Breath Noise","123 Seashore","124 Bird Tweet","125 Telephone Ring","126 Helicopter","127 Applause","128 Gunshot"]}),e.getInstrument=function(n){var t=e.channels[n];return t&&t.instrument},e.setInstrument=function(n,t,r){var o=e.channels[n];return r?setTimeout(function(){o.instrument=t},r):(o.instrument=t,void 0)},e.getMono=function(n){var t=e.channels[n];return t&&t.mono},e.setMono=function(n,t,r){var o=e.channels[n];return r?setTimeout(function(){o.mono=t},r):(o.mono=t,void 0)},e.getOmni=function(n){var t=e.channels[n];return t&&t.omni},e.setOmni=function(n,t){var r=e.channels[n];return delay?setTimeout(function(){r.omni=t},delay):(r.omni=t,void 0)},e.getSolo=function(n){var t=e.channels[n];return t&&t.solo},e.setSolo=function(n,t){var r=e.channels[n];return delay?setTimeout(function(){r.solo=t},delay):(r.solo=t,void 0)},e.channels=function(){for(var e={},n=0;16>n;n++)e[n]={instrument:n,pitchBend:0,mute:!1,mono:!1,omni:!1,solo:!1};return e}(),e.keyToNote={},e.noteToKey={},function(){for(var n=21,t=108,r=["C","Db","D","Eb","E","F","Gb","G","Ab","A","Bb","B"],o=n;t>=o;o++){var i=(o-12)/12>>0,a=r[o%12]+i;e.keyToNote[a]=o,e.noteToKey[o]=a}}()}(MIDI),"undefined"==typeof MIDI&&(MIDI={}),MIDI.Soundfont=MIDI.Soundfont||{},MIDI.Player=MIDI.Player||{},function(e){"use strict";e.DEBUG=!0,e.USE_XHR=!0,e.soundfontUrl="./soundfont/",e.loadPlugin=function(t){"function"==typeof t&&(t={onsuccess:t}),e.soundfontUrl=t.soundfontUrl||e.soundfontUrl,e.audioDetect(function(r){var o=window.location.hash,i="";if(r[t.api]?i=t.api:r[o.substr(1)]?i=o.substr(1):r.webmidi?i="webmidi":window.AudioContext?i="webaudio":window.Audio&&(i="audiotag"),n[i]){if(t.targetFormat)var a=t.targetFormat;else var a=r["audio/ogg"]?"ogg":"mp3";e.__api=i,e.__audioFormat=a,e.supports=r,e.loadResource(t)}})},e.loadResource=function(t){var r=t.instruments||t.instrument||"acoustic_grand_piano";"object"!=typeof r&&(r=r||0===r?[r]:[]);for(var o=0;r.length>o;o++){var i=r[o];i===+i&&e.GM.byId[i]&&(r[o]=e.GM.byId[i].id)}t.format=e.__audioFormat,t.instruments=r,n[e.__api](t)};var n={webmidi:function(n){e.WebMIDI.connect(n)},audiotag:function(e){t(e,"AudioTag")},webaudio:function(e){t(e,"WebAudio")}},t=function(n,t){for(var o=n.format,i=n.instruments,a=n.onprogress,u=n.onerror,s=i.length,c=s,l=function(){--c||(a&&a("load",1),e[t].connect(n))},d=0;s>d;d++){var f=i[d];MIDI.Soundfont[f]?l():r(i[d],o,function(e,n){var t=n/s,r=(s-c)/s;a&&a("load",t+r,f)},function(){l()},u)}},r=function(n,t,r,o,i){var a=e.soundfontUrl+n+"-"+t+".js";e.USE_XHR?e.util.request({url:a,format:"text",onerror:i,onprogress:r,onsuccess:function(e,n){var t=document.createElement("script");t.language="javascript",t.type="text/javascript",t.text=n,document.body.appendChild(t),o()}}):dom.loadScript.add({url:a,verify:'MIDI.Soundfont["'+n+'"]',onerror:i,onsuccess:function(){o()}})};e.setDefaultPlugin=function(n){for(var t in n)e[t]=n[t]}}(MIDI),"undefined"==typeof MIDI&&(MIDI={}),MIDI.Player===void 0&&(MIDI.Player={}),function(){"use strict";var e=MIDI.Player;e.currentTime=0,e.endTime=0,e.restart=0,e.playing=!1,e.timeWarp=1,e.startDelay=0,e.BPM=120,e.start=e.resume=function(n){-1>e.currentTime&&(e.currentTime=-1),d(e.currentTime,null,n)},e.pause=function(){var n=e.restart;f(),e.restart=n},e.stop=function(){f(),e.restart=0,e.currentTime=0},e.addListener=function(e){a=e},e.removeListener=function(){a=void 0},e.clearAnimation=function(){e.animationFrameId&&cancelAnimationFrame(e.animationFrameId)},e.setAnimation=function(n){var t=0,r=0,o=0;e.clearAnimation();var a=function(){if(e.animationFrameId=requestAnimationFrame(a),0!==e.endTime){e.playing?(t=o===e.currentTime?r-Date.now():0,t=0===e.currentTime?0:e.currentTime-t,o!==e.currentTime&&(r=Date.now(),o=e.currentTime)):t=e.currentTime;var u=e.endTime,s=t/1e3,c=s/60,l=s-60*c,d=60*c+l,f=u/1e3;-1>f-d||n({now:d,end:f,events:i})}};requestAnimationFrame(a)},e.loadMidiFile=function(n,t,r){try{e.replayer=new Replayer(MidiFile(e.currentData),e.timeWarp,null,e.BPM),e.data=e.replayer.getData(),e.endTime=c(),MIDI.loadPlugin({onsuccess:n,onprogress:t,onerror:r})}catch(o){r&&r(o)}},e.loadFile=function(n,t,r,o){if(e.stop(),-1!==n.indexOf("base64,")){var i=window.atob(n.split(",")[1]);e.currentData=i,e.loadMidiFile(t,r,o)}else{var a=new XMLHttpRequest;a.open("GET",n),a.overrideMimeType("text/plain; charset=x-user-defined"),a.onreadystatechange=function(){if(4===this.readyState)if(200===this.status){for(var n=this.responseText||"",i=[],a=n.length,u=String.fromCharCode,s=0;a>s;s++)i[s]=u(255&n.charCodeAt(s));var c=i.join("");e.currentData=c,e.loadMidiFile(t,r,o)}else o&&o("Unable to load MIDI file")},a.send()}},e.getFileInstruments=function(){for(var n={},t={},r=0;e.data.length>r;r++){var o=e.data[r][0].event;if("channel"===o.type){var i=o.channel;switch(o.subtype){case"controller":break;case"programChange":t[i]=o.programNumber;break;case"noteOn":var a=t[i],u=MIDI.GM.byId[isFinite(a)?a:i];n[u.id]=!0}}}var s=[];for(var c in n)s.push(c);return s};var n,t,r=[],o=0,i={},a=void 0,u=function(t,o,u,s,c,l){return setTimeout(function(){var s={channel:t,note:o,now:u,end:e.endTime,message:c,velocity:l};128===c?delete i[o]:i[o]=s,a&&a(s),e.currentTime=u,r.shift(),1e3>r.length?d(n,!0):e.currentTime===n&&e.endTime>n&&d(n,!0)},u-s)},s=function(){return"webaudio"===MIDI.api?MIDI.WebAudio.getContext():(e.ctx={currentTime:0},e.ctx)},c=function(){for(var n=e.data,t=n.length,r=.5,o=0;t>o;o++)r+=n[o][1];return r},l=function(){return window.performance&&window.performance.now?window.performance.now():Date.now()},d=function(i,a,d){if(e.replayer){a||(i===void 0&&(i=e.restart),e.playing&&f(),e.playing=!0,e.data=e.replayer.getData(),e.endTime=c());var p,A=0,m=0,v=e.data,q=s(),g=v.length;n=.5,r[0]&&r[0].interval||0;var h=i-e.currentTime;if("webaudio"!==MIDI.api){var y=l();t=t||y,q.currentTime=(y-t)/1e3}o=q.currentTime;for(var S=0;g>S&&100>m;S++){var I=v[S];if(i>=(n+=I[1]))A=n;else{i=n-A;var b=I[0].event;if("channel"===b.type){var T=b.channel,w=MIDI.channels[T],M=q.currentTime+(i+h+e.startDelay)/1e3,D=n-A+e.startDelay;switch(b.subtype){case"controller":MIDI.setController(T,b.controllerType,b.value,M);break;case"programChange":MIDI.programChange(T,b.programNumber,M);break;case"pitchBend":MIDI.pitchBend(T,b.value,M);break;case"noteOn":if(w.mute)break;p=b.noteNumber-(e.MIDIOffset||0),r.push({event:b,time:D,source:MIDI.noteOn(T,b.noteNumber,b.velocity,M),interval:u(T,p,n+e.startDelay,A-h,144,b.velocity)}),m++;break;case"noteOff":if(w.mute)break;p=b.noteNumber-(e.MIDIOffset||0),r.push({event:b,time:D,source:MIDI.noteOff(T,b.noteNumber,M),interval:u(T,p,n,A-h,128,0)});break;default:}}}}d&&d(r)}},f=function(){var n=s();for(e.playing=!1,e.restart+=1e3*(n.currentTime-o);r.length;){var 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