osmd-audio-player/umd/OsmdAudioPlayer.min.js

OSMD audio player

!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).OsmdAudioPlayer=t()}(this,(function(){"use strict";
/*! *****************************************************************************
    Copyright (c) Microsoft Corporation.

    Permission to use, copy, modify, and/or distribute this software for any
    purpose with or without fee is hereby granted.

    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
    REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
    AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
    INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
    LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
    OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
    PERFORMANCE OF THIS SOFTWARE.
    ***************************************************************************** */function e(e,t,n,r){return new(n||(n=Promise))((function(o,a){function i(e){try{c(r.next(e))}catch(e){a(e)}}function s(e){try{c(r.throw(e))}catch(e){a(e)}}function c(e){var t;e.done?o(e.value):(t=e.value,t instanceof n?t:new n((function(e){e(t)}))).then(i,s)}c((r=r.apply(e,t||[])).next())}))}class t{constructor(){this.steps=[]}[Symbol.iterator](){return this.steps.values()}createStep(e){let t=this.steps.find(t=>t.tick===e);return t||(t={tick:e,notes:[]},this.steps.push(t)),t}addNote(e,t){var n;(null!=(n=this.steps.find(t=>t.tick===e))?n:this.createStep(e)).notes.push(t)}delete(e){const t=this.steps.findIndex(t=>t.tick===e.tick);null!=t&&this.steps.splice(t,1)}sort(){return this.steps.sort((e,t)=>e.tick-t.tick),this}getFirstEmptyTick(){return this.sort().steps.filter(e=>!e.notes.length)[0].tick}}class n{constructor(e,n,r,o){this.stepQueue=new t,this.stepQueueIndex=0,this.scheduledTicks=new Set,this.currentTick=0,this.currentTickTimestamp=0,this.audioContextStartTime=0,this.schedulerIntervalHandle=null,this.scheduleInterval=200,this.schedulePeriod=500,this.tickDenominator=1024,this.lastTickOffset=300,this.playing=!1,this.noteSchedulingCallback=o,this.denominator=e,this.wholeNoteLength=n,this.audioContext=r}get schedulePeriodTicks(){return this.schedulePeriod/this.tickDuration}get audioContextTime(){return this.audioContext?1e3*(this.audioContext.currentTime-this.audioContextStartTime):0}get tickDuration(){return this.wholeNoteLength/this.tickDenominator}get calculatedTick(){return this.currentTick+Math.round((this.audioContextTime-this.currentTickTimestamp)/this.tickDuration)}start(){this.playing=!0,this.stepQueue.sort(),this.audioContextStartTime=this.audioContext.currentTime,this.currentTickTimestamp=this.audioContextTime,this.schedulerIntervalHandle||(this.schedulerIntervalHandle=window.setInterval(()=>this.scheduleIterationStep(),this.scheduleInterval))}setIterationStep(e){e=Math.min(this.stepQueue.steps.length-1,e),this.stepQueueIndex=e,this.currentTick=this.stepQueue.steps[this.stepQueueIndex].tick}pause(){this.playing=!1}resume(){this.playing=!0,this.currentTickTimestamp=this.audioContextTime}reset(){this.playing=!1,this.currentTick=0,this.currentTickTimestamp=0,this.stepQueueIndex=0,clearInterval(this.scheduleInterval),this.schedulerIntervalHandle=null}loadNotes(e){let t=this.lastTickOffset;this.stepQueue.steps.length>0&&(t=this.stepQueue.getFirstEmptyTick());for(let n of e)if(!n.IsGrace)for(let e of n.Notes)this.stepQueue.addNote(t,e),this.stepQueue.createStep(t+e.Length.RealValue*this.tickDenominator)}scheduleIterationStep(){var e,t;if(!this.playing)return;this.currentTick=this.calculatedTick,this.currentTickTimestamp=this.audioContextTime;let n=null===(e=this.stepQueue.steps[this.stepQueueIndex])||void 0===e?void 0:e.tick;for(;this.nextTickAvailableAndWithinSchedulePeriod(n);){let e=this.stepQueue.steps[this.stepQueueIndex],r=(e.tick-this.currentTick)*this.tickDuration;r<0&&(r=0),this.scheduledTicks.add(e.tick),this.noteSchedulingCallback(r/1e3,e.notes),this.stepQueueIndex++,n=null===(t=this.stepQueue.steps[this.stepQueueIndex])||void 0===t?void 0:t.tick}for(let e of this.scheduledTicks)e<=this.currentTick&&this.scheduledTicks.delete(e)}nextTickAvailableAndWithinSchedulePeriod(e){return e&&this.currentTickTimestamp+(e-this.currentTick)*this.tickDuration<=this.currentTickTimestamp+this.schedulePeriod}}var r;!function(e){e[e.None=0]="None",e[e.Staccato=1]="Staccato",e[e.Legato=2]="Legato"}(r||(r={}));const o=[[0,"Acoustic Grand Piano"],[1,"Bright Acoustic Piano"],[2,"Electric Grand Piano"],[3,"Honky-tonk Piano"],[4,"Electric Piano 1"],[5,"Electric Piano 2"],[6,"Harpsichord"],[7,"Clavi"],[8,"Celesta"],[9,"Glockenspiel"],[10,"Music Box"],[11,"Vibraphone"],[12,"Marimba"],[13,"Xylophone"],[14,"Tubular Bells"],[15,"Dulcimer"],[16,"Drawbar Organ"],[17,"Percussive Organ"],[18,"Rock Organ"],[19,"Church Organ"],[20,"Reed Organ"],[21,"Accordion"],[22,"Harmonica"],[23,"Tango Accordion"],[24,"Acoustic Guitar (nylon)"],[25,"Acoustic Guitar (steel)"],[26,"Electric Guitar (jazz)"],[27,"Electric Guitar (clean)"],[28,"Electric Guitar (muted)"],[29,"Overdriven Guitar"],[30,"Distortion Guitar"],[31,"Guitar harmonics"],[32,"Acoustic Bass"],[33,"Electric Bass (finger)"],[34,"Electric Bass (pick)"],[35,"Fretless Bass"],[36,"Slap Bass 1"],[37,"Slap Bass 2"],[38,"Synth Bass 1"],[39,"Synth Bass 2"],[40,"Violin"],[41,"Viola"],[42,"Cello"],[43,"Contrabass"],[44,"Tremolo Strings"],[45,"Pizzicato Strings"],[46,"Orchestral Harp"],[47,"Timpani"],[48,"String Ensemble 1"],[49,"String Ensemble 2"],[50,"SynthStrings 1"],[51,"SynthStrings 2"],[52,"Choir Aahs"],[53,"Voice Oohs"],[54,"Synth Choir"],[55,"Orchestra Hit"],[56,"Trumpet"],[57,"Trombone"],[58,"Tuba"],[59,"Muted Trumpet"],[60,"French Horn"],[61,"Brass Section"],[62,"SynthBrass 1"],[63,"SynthBrass 2"],[64,"Soprano Sax"],[65,"Alto Sax"],[66,"Tenor Sax"],[67,"Baritone Sax"],[68,"Oboe"],[69,"English Horn"],[70,"Bassoon"],[71,"Clarinet"],[72,"Piccolo"],[73,"Flute"],[74,"Recorder"],[75,"Pan Flute"],[76,"Blown Bottle"],[77,"Shakuhachi"],[78,"Whistle"],[79,"Ocarina"],[80,"Lead 1 (square)"],[81,"Lead 2 (sawtooth)"],[82,"Lead 3 (calliope)"],[83,"Lead 4 (chiff)"],[84,"Lead 5 (charang)"],[85,"Lead 6 (voice)"],[86,"Lead 7 (fifths)"],[87,"Lead 8 (bass + lead)"],[88,"Pad 1 (new age)"],[89,"Pad 2 (warm)"],[90,"Pad 3 (polysynth)"],[91,"Pad 4 (choir)"],[92,"Pad 5 (bowed)"],[93,"Pad 6 (metallic)"],[94,"Pad 7 (halo)"],[95,"Pad 8 (sweep)"],[96,"FX 1 (rain)"],[97,"FX 2 (soundtrack)"],[98,"FX 3 (crystal)"],[99,"FX 4 (atmosphere)"],[100,"FX 5 (brightness)"],[101,"FX 6 (goblins)"],[102,"FX 7 (echoes)"],[103,"FX 8 (sci-fi)"],[104,"Sitar"],[105,"Banjo"],[106,"Shamisen"],[107,"Koto"],[108,"Kalimba"],[109,"Bag pipe"],[110,"Fiddle"],[111,"Shanai"],[112,"Tinkle Bell"],[113,"Agogo"],[114,"Steel Drums"],[115,"Woodblock"],[116,"Taiko Drum"],[117,"Melodic Tom"],[118,"Synth Drum"],[119,"Reverse Cymbal"],[120,"Guitar Fret Noise"],[121,"Breath Noise"],[122,"Seashore"],[123,"Bird Tweet"],[124,"Telephone Ring"],[125,"Helicopter"],[126,"Applause"],[127,"Gunshot"]];var a=["accordion","acoustic_bass","acoustic_grand_piano","acoustic_guitar_nylon","acoustic_guitar_steel","agogo","alto_sax","applause","bagpipe","banjo","baritone_sax","bassoon","bird_tweet","blown_bottle","brass_section","breath_noise","bright_acoustic_piano","celesta","cello","choir_aahs","church_organ","clarinet","clavinet","contrabass","distortion_guitar","drawbar_organ","dulcimer","electric_bass_finger","electric_bass_pick","electric_grand_piano","electric_guitar_clean","electric_guitar_jazz","electric_guitar_muted","electric_piano_1","electric_piano_2","english_horn","fiddle","flute","french_horn","fretless_bass","fx_1_rain","fx_2_soundtrack","fx_3_crystal","fx_4_atmosphere","fx_5_brightness","fx_6_goblins","fx_7_echoes","fx_8_scifi","glockenspiel","guitar_fret_noise","guitar_harmonics","gunshot","harmonica","harpsichord","helicopter","honkytonk_piano","kalimba","koto","lead_1_square","lead_2_sawtooth","lead_3_calliope","lead_4_chiff","lead_5_charang","lead_6_voice","lead_7_fifths","lead_8_bass__lead","marimba","melodic_tom","music_box","muted_trumpet","oboe","ocarina","orchestra_hit","orchestral_harp","overdriven_guitar","pad_1_new_age","pad_2_warm","pad_3_polysynth","pad_4_choir","pad_5_bowed","pad_6_metallic","pad_7_halo","pad_8_sweep","pan_flute","percussive_organ","piccolo","pizzicato_strings","recorder","reed_organ","reverse_cymbal","rock_organ","seashore","shakuhachi","shamisen","shanai","sitar","slap_bass_1","slap_bass_2","soprano_sax","steel_drums","string_ensemble_1","string_ensemble_2","synth_bass_1","synth_bass_2","synth_brass_1","synth_brass_2","synth_choir","synth_drum","synth_strings_1","synth_strings_2","taiko_drum","tango_accordion","telephone_ring","tenor_sax","timpani","tinkle_bell","tremolo_strings","trombone","trumpet","tuba","tubular_bells","vibraphone","viola","violin","voice_oohs","whistle","woodblock","xylophone"];"undefined"!=typeof globalThis?globalThis:"undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self&&self;function i(e,t,n){return e(n={path:t,exports:{},require:function(e,t){return s(null==t&&n.path)}},n.exports),n.exports}function s(){throw new Error("Dynamic requires are not currently supported by @rollup/plugin-commonjs")}var c={decode:function(e,t){for(var n,r,o,a=e.replace(/[^A-Za-z0-9\+\/]/g,""),i=a.length,s=t?Math.ceil((3*i+1>>2)/t)*t:3*i+1>>2,c=new Uint8Array(s),u=0,l=0,h=0;h<i;h++)if(r=3&h,u|=((o=a.charCodeAt(h))>64&&o<91?o-65:o>96&&o<123?o-71:o>47&&o<58?o+4:43===o?62:47===o?63:0)<<18-6*r,3===r||i-h==1){for(n=0;n<3&&l<s;n++,l++)c[l]=u>>>(16>>>n&24)&255;u=0}return c}},u=function(e,t){return new Promise((function(n,r){var o=new XMLHttpRequest;t&&(o.responseType=t),o.open("GET",e),o.onload=function(){200===o.status?n(o.response):r(Error(o.statusText))},o.onerror=function(){r(Error("Network Error"))},o.send()}))},l=i((function(e){function t(e){return function(t){return"string"==typeof t&&e.test(t)}}function n(e,t){return"string"==typeof e?e+t:"function"==typeof e?e(t):t}function r(e,t,n,r){var c=t instanceof ArrayBuffer?o:a(t)?i:function(e){return e&&"function"==typeof e.then}(t)?s:l(t)?h:function(e){return e&&"object"==typeof e}(t)?d:f(t)?p:m(t)?v:g(t)?y:null;return c?c(e,t,n||{}):r?Promise.resolve(r):Promise.reject("Source not valid ("+t+")")}function o(e,t,n){return new Promise((function(n,r){e.decodeAudioData(t,(function(e){n(e)}),(function(){r("Can't decode audio data ("+t.slice(0,30)+"...)")}))}))}r.fetch=u;var a=t(/\.(mp3|wav|ogg)(\?.*)?$/i);function i(e,t,o){var a=n(o.from,t);return r(e,r.fetch(a,"arraybuffer"),o)}function s(e,t,n){return t.then((function(t){return r(e,t,n)}))}var l=Array.isArray;function h(e,t,n){return Promise.all(t.map((function(t){return r(e,t,n,t)})))}function d(e,t,n){var o={},a=Object.keys(t).map((function(a){if(n.only&&-1===n.only.indexOf(a))return null;var i=t[a];return r(e,i,n,i).then((function(e){o[a]=e}))}));return Promise.all(a).then((function(){return o}))}var f=t(/\.json(\?.*)?$/i);function p(e,t,o){var a=n(o.from,t);return r(e,r.fetch(a,"text").then(JSON.parse),o)}var m=t(/^data:audio/);function v(e,t,n){var o=t.indexOf(",");return r(e,c.decode(t.slice(o+1)).buffer,n)}var g=t(/\.js(\?.*)?$/i);function y(e,t,o){var a=n(o.from,t);return r(e,r.fetch(a,"text").then(w),o)}function w(e){var t=e.indexOf("MIDI.Soundfont.");if(t<0)throw Error("Invalid MIDI.js Soundfont format");t=e.indexOf("=",t)+2;var n=e.lastIndexOf(",");return JSON.parse(e.slice(t,n)+"}")}e.exports&&(e.exports=r),"undefined"!=typeof window&&(window.loadAudio=r)})),h=function(e){var t=e.createGain(),n=t._voltage=function(e){var t=e.createBufferSource(),n=e.createBuffer(1,2,e.sampleRate);return n.getChannelData(0).set(f),t.buffer=n,t.loop=!0,t}(e),r=p(n),o=p(n),a=p(n);return t._startAmount=p(o),t._endAmount=p(a),t._multiplier=p(r),t._multiplier.connect(t),t._startAmount.connect(t),t._endAmount.connect(t),t.value=r.gain,t.startValue=o.gain,t.endValue=a.gain,t.startValue.value=0,t.endValue.value=0,Object.defineProperties(t,d),t};var d={attack:{value:0,writable:!0},decay:{value:0,writable:!0},sustain:{value:1,writable:!0},release:{value:0,writable:!0},getReleaseDuration:{value:function(){return this.release}},start:{value:function(e){var t=this._multiplier.gain,n=this._startAmount.gain,r=this._endAmount.gain;this._voltage.start(e),this._decayFrom=this._decayFrom=e+this.attack,this._startedAt=e;var o=this.sustain;t.cancelScheduledValues(e),n.cancelScheduledValues(e),r.cancelScheduledValues(e),r.setValueAtTime(0,e),this.attack?(t.setValueAtTime(0,e),t.linearRampToValueAtTime(1,e+this.attack),n.setValueAtTime(1,e),n.linearRampToValueAtTime(0,e+this.attack)):(t.setValueAtTime(1,e),n.setValueAtTime(0,e)),this.decay&&t.setTargetAtTime(o,this._decayFrom,m(this.decay))}},stop:{value:function(e,t){t&&(e-=this.release);var n=e+this.release;if(this.release){var r=this._multiplier.gain,o=this._startAmount.gain,a=this._endAmount.gain;r.cancelScheduledValues(e),o.cancelScheduledValues(e),a.cancelScheduledValues(e);var i=m(this.release);if(this.attack&&e<this._decayFrom){var s=function(e,t,n,r,o){var a=e+(o-n)/(r-n)*(t-e);a<=e&&(a=e);a>=t&&(a=t);return a}(0,1,this._startedAt,this._decayFrom,e);r.linearRampToValueAtTime(s,e),o.linearRampToValueAtTime(1-s,e),o.setTargetAtTime(0,e,i)}a.setTargetAtTime(1,e,i),r.setTargetAtTime(0,e,i)}return this._voltage.stop(n),n}},onended:{get:function(){return this._voltage.onended},set:function(e){this._voltage.onended=e}}},f=new Float32Array([1,1]);function p(e){var t=e.context.createGain();return e.connect(t),t}function m(e){return Math.log(e+1)/Math.log(100)}var v={},g={gain:1,attack:.01,decay:.1,sustain:.9,release:.3,loop:!1,cents:0,loopStart:0,loopEnd:0};function y(e){return"number"==typeof e}var w=["attack","decay","sustain","release"];var _=function(e,t,n){var r=!1,o=0,a={},i=e.createGain();i.gain.value=1;var s=Object.assign({},g,n),c={context:e,out:i,opts:s};return t instanceof AudioBuffer?c.buffer=t:c.buffers=t,c.start=function(t,n,i){if(c.buffer&&null!==t)return c.start(null,t,n);var s=t?c.buffers[t]:c.buffer;if(s){if(r){var l=i||v;n=Math.max(e.currentTime,n||0),c.emit("start",n,t,l);var h=u(t,s,l);return h.id=function(t,n){return n.id=o++,a[n.id]=n,n.source.onended=function(){var t=e.currentTime;n.source.disconnect(),n.env.disconnect(),n.disconnect(),c.emit("ended",t,n.id,n)},n.id}(0,h),h.env.start(n),h.source.start(n),c.emit("started",n,h.id,h),l.duration&&h.stop(n+l.duration),h}console.warn("SamplePlayer not connected to any node.")}else console.warn("Buffer "+t+" not found.")},c.play=function(e,t,n){return c.start(e,t,n)},c.stop=function(e,t){var n;return(t=t||Object.keys(a)).map((function(t){return(n=a[t])?(n.stop(e),n.id):null}))},c.connect=function(e){return r=!0,i.connect(e),c},c.emit=function(e,t,n,r){c.onevent&&c.onevent(e,t,n,r);var o=c["on"+e];o&&o(t,n,r)},c;function u(t,n,r){var o,a=e.createGain();return a.gain.value=0,a.connect(i),a.env=function(e,t,n){var r=h(e),o=t.adsr||n.adsr;return w.forEach((function(e,a){r[e]=o?o[a]:t[e]||n[e]})),r.value.value=y(t.gain)?t.gain:y(n.gain)?n.gain:1,r}(e,r,s),a.env.connect(a.gain),a.source=e.createBufferSource(),a.source.buffer=n,a.source.connect(a),a.source.loop=r.loop||s.loop,a.source.playbackRate.value=(o=r.cents||s.cents)?Math.pow(2,o/1200):1,a.source.loopStart=r.loopStart||s.loopStart,a.source.loopEnd=r.loopEnd||s.loopEnd,a.stop=function(n){var r=n||e.currentTime;c.emit("stop",r,t);var o=a.env.stop(r);a.source.stop(o)},a}};function C(e,t){return function(n,r,o,a){e(n,r,o,a),t(n,r,o,a)}}var b=/^([a-gA-G])(#{1,}|b{1,}|x{1,}|)(-?\d*)\s*(.*)\s*$/;var T=[0,2,4,5,7,9,11];function M(e,t,n){if("string"!=typeof e)return null;var r=b.exec(e);if(!r||!t&&r[4])return null;var o={letter:r[1].toUpperCase(),acc:r[2].replace(/x/g,"##")};return o.pc=o.letter+o.acc,o.step=(o.letter.charCodeAt(0)+3)%7,o.alt="b"===o.acc[0]?-o.acc.length:o.acc.length,o.chroma=T[o.step]+o.alt,r[3]&&(o.oct=+r[3],o.midi=o.chroma+12*(o.oct+1),o.freq=I(o.midi,n)),t&&(o.tonicOf=r[4]),o}function I(e,t){return Math.pow(2,(e-69)/12)*(t||440)}var x={parse:M,regex:function(){return b},midiToFreq:I};["letter","acc","pc","step","alt","chroma","oct","midi","freq"].forEach((function(e){x[e]=function(t){var n=M(t);return n&&void 0!==n[e]?n[e]:null}}));var S=x,A=function(e){return function(e){return null!==e&&e!==[]&&e>=0&&e<129}(e)?+e:S.midi(e)},N=function(e){if(e.buffers){var t=e.opts.map,n="function"==typeof t?t:A,r=function(e){return e?n(e)||e:null};e.buffers=function(e,t){return Object.keys(e).reduce((function(n,r){return n[t(r)]=e[r],n}),{})}(e.buffers,r);var o=e.start;e.start=function(e,t,n){var a=r(e),i=a%1;return i&&(a=Math.floor(a),n=Object.assign(n||{},{cents:Math.floor(100*i)})),o(a,t,n)}}return e};var k=Array.isArray,O={},E=i((function(e,t){e.exports=function e(t,n,r){function o(i,c){if(!n[i]){if(!t[i]){if(!c&&s)return s();if(a)return a(i,!0);var u=new Error("Cannot find module '"+i+"'");throw u.code="MODULE_NOT_FOUND",u}var l=n[i]={exports:{}};t[i][0].call(l.exports,(function(e){var n=t[i][1][e];return o(n||e)}),l,l.exports,e,t,n,r)}return n[i].exports}for(var a=s,i=0;i<r.length;i++)o(r[i]);return o}({1:[function(e,t,n){Object.defineProperty(n,"__esModule",{value:!0}),n.default=function(e){function t(e){if(this._event=e,this._data=e.data,this.receivedTime=e.receivedTime,this._data&&this._data.length<2)console.warn("Illegal MIDI message of length",this._data.length);else switch(this._messageCode=240&e.data[0],this.channel=15&e.data[0],this._messageCode){case 128:this.messageType="noteoff",this.key=127&e.data[1],this.velocity=127&e.data[2];break;case 144:this.messageType="noteon",this.key=127&e.data[1],this.velocity=127&e.data[2];break;case 160:this.messageType="keypressure",this.key=127&e.data[1],this.pressure=127&e.data[2];break;case 176:this.messageType="controlchange",this.controllerNumber=127&e.data[1],this.controllerValue=127&e.data[2],120===this.controllerNumber&&0===this.controllerValue?this.channelModeMessage="allsoundoff":121===this.controllerNumber?this.channelModeMessage="resetallcontrollers":122===this.controllerNumber?0===this.controllerValue?this.channelModeMessage="localcontroloff":this.channelModeMessage="localcontrolon":123===this.controllerNumber&&0===this.controllerValue?this.channelModeMessage="allnotesoff":124===this.controllerNumber&&0===this.controllerValue?this.channelModeMessage="omnimodeoff":125===this.controllerNumber&&0===this.controllerValue?this.channelModeMessage="omnimodeon":126===this.controllerNumber?this.channelModeMessage="monomodeon":127===this.controllerNumber&&(this.channelModeMessage="polymodeon");break;case 192:this.messageType="programchange",this.program=e.data[1];break;case 208:this.messageType="channelpressure",this.pressure=127&e.data[1];break;case 224:this.messageType="pitchbendchange";var t=127&e.data[2],n=127&e.data[1];this.pitchBend=(t<<8)+n}}return new t(e)},t.exports=n.default},{}]},{},[1])(1)})),P=i((function(e){function t(e,t,n){return function(e){return e.listenToMidi=function(t,n){var r={},o=n||{},a=o.gain||function(e){return e/127};return t.onmidimessage=function(t){var n=t.messageType?t:E(t);if("noteon"===n.messageType&&0===n.velocity&&(n.messageType="noteoff"),!o.channel||n.channel===o.channel)switch(n.messageType){case"noteon":r[n.key]=e.play(n.key,0,{gain:a(n.velocity)});break;case"noteoff":r[n.key]&&(r[n.key].stop(),delete r[n.key])}},e},e}(function(e){return e.schedule=function(t,n){var r,o,a,i,s=e.context.currentTime,c=t<s?s:t;return e.emit("schedule",c,n),n.map((function(t){return t?(k(t)?(r=t[0],o=t[1]):(r=t.time,o=t),function(e){return e&&"object"==typeof 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