1import{a as Y,c as C,g as Z}from"./_commonjsHelpers-BosuxZz1.js";function $(e,t){for(var n=0;n<t.length;n++){const i=t[n];if(typeof i!="string"&&!Array.isArray(i)){for(const a in i)if(a!=="default"&&!(a in e)){const o=Object.getOwnPropertyDescriptor(i,a);o&&Object.defineProperty(e,a,o.get?o:{enumerable:!0,get:()=>i[a]})}}}return Object.freeze(Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}))}var W={},j={};function ee(e){var t=new I(e),n=t.readChunk();if(n.id!="MThd")throw"Bad MIDI file. Expected 'MHdr', got: '"+n.id+"'";for(var i=te(n.data),a=[],o=0;!t.eof()&&o<i.numTracks;o++){var r=t.readChunk();if(r.id!="MTrk")throw"Bad MIDI file. Expected 'MTrk', got: '"+r.id+"'";var f=re(r.data);a.push(f)}return{header:i,tracks:a}}function te(e){var t=new I(e),n=t.readUInt16(),i=t.readUInt16(),a={format:n,numTracks:i},o=t.readUInt16();return o&32768?(a.framesPerSecond=256-(o>>8),a.ticksPerFrame=o&255):a.ticksPerBeat=o,a}function re(e){for(var t=new I(e),n=[];!t.eof();){var i=o();n.push(i)}return n;var a;function o(){var r={};r.deltaTime=t.readVarInt();var f=t.readUInt8();if((f&240)===240)if(f===255){r.meta=!0;var c=t.readUInt8(),u=t.readVarInt();switch(c){case 0:if(r.type="sequenceNumber",u!==2)throw"Expected length for sequenceNumber event is 2, got "+u;return r.number=t.readUInt16(),r;case 1:return r.type="text",r.text=t.readString(u),r;case 2:return r.type="copyrightNotice",r.text=t.readString(u),r;case 3:return r.type="trackName",r.text=t.readString(u),r;case 4:return r.type="instrumentName",r.text=t.readString(u),r;case 5:return r.type="lyrics",r.text=t.readString(u),r;case 6:return r.type="marker",r.text=t.readString(u),r;case 7:return r.type="cuePoint",r.text=t.readString(u),r;case 32:if(r.type="channelPrefix",u!=1)throw"Expected length for channelPrefix event is 1, got "+u;return r.channel=t.readUInt8(),r;case 33:if(r.type="portPrefix",u!=1)throw"Expected length for portPrefix event is 1, got "+u;return r.port=t.readUInt8(),r;case 47:if(r.type="endOfTrack",u!=0)throw"Expected length for endOfTrack event is 0, got "+u;return r;case 81:if(r.type="setTempo",u!=3)throw"Expected length for setTempo event is 3, got "+u;return r.microsecondsPerBeat=t.readUInt24(),r;case 84:if(r.type="smpteOffset",u!=5)throw"Expected length for smpteOffset event is 5, got "+u;var y=t.readUInt8(),p={0:24,32:25,64:29,96:30};return r.frameRate=p[y&96],r.hour=y&31,r.min=t.readUInt8(),r.sec=t.readUInt8(),r.frame=t.readUInt8(),r.subFrame=t.readUInt8(),r;case 88:if(r.type="timeSignature",u!=2&&u!=4)throw"Expected length for timeSignature event is 4 or 2, got "+u;return r.numerator=t.readUInt8(),r.denominator=1<<t.readUInt8(),u===4?(r.metronome=t.readUInt8(),r.thirtyseconds=t.readUInt8()):(r.metronome=36,r.thirtyseconds=8),r;case 89:if(r.type="keySignature",u!=2)throw"Expected length for keySignature event is 2, got "+u;return r.key=t.readInt8(),r.scale=t.readUInt8(),r;case 127:return r.type="sequencerSpecific",r.data=t.readBytes(u),r;default:return r.type="unknownMeta",r.data=t.readBytes(u),r.metatypeByte=c,r}}else if(f==240){r.type="sysEx";var u=t.readVarInt();return r.data=t.readBytes(u),r}else if(f==247){r.type="endSysEx";var u=t.readVarInt();return r.data=t.readBytes(u),r}else throw"Unrecognised MIDI event type byte: "+f;else{var s;if(f&128)s=t.readUInt8(),a=f;else{if(a===null)throw"Running status byte encountered before status byte";s=f,f=a,r.running=!0}var h=f>>4;switch(r.channel=f&15,h){case 8:return r.type="noteOff",r.noteNumber=s,r.velocity=t.readUInt8(),r;case 9:var m=t.readUInt8();return r.type=m===0?"noteOff":"noteOn",r.noteNumber=s,r.velocity=m,m===0&&(r.byte9=!0),r;case 10:return r.type="noteAftertouch",r.noteNumber=s,r.amount=t.readUInt8(),r;case 11:return r.type="controller",r.controllerType=s,r.value=t.readUInt8(),r;case 12:return r.type="programChange",r.programNumber=s,r;case 13:return r.type="channelAftertouch",r.amount=s,r;case 14:return r.type="pitchBend",r.value=s+(t.readUInt8()<<7)-8192,r;default:throw"Unrecognised MIDI event type: "+h}}}}function I(e){this.buffer=e,this.bufferLen=this.buffer.length,this.pos=0}I.prototype.eof=function(){return this.pos>=this.bufferLen};I.prototype.readUInt8=function(){var e=this.buffer[this.pos];return this.pos+=1,e};I.prototype.readInt8=function(){var e=this.readUInt8();return e&128?e-256:e};I.prototype.readUInt16=function(){var e=this.readUInt8(),t=this.readUInt8();return(e<<8)+t};I.prototype.readInt16=function(){var e=this.readUInt16();return e&32768?e-65536:e};I.prototype.readUInt24=function(){var e=this.readUInt8(),t=this.readUInt8(),n=this.readUInt8();return(e<<16)+(t<<8)+n};I.prototype.readInt24=function(){var e=this.readUInt24();return e&8388608?e-16777216:e};I.prototype.readUInt32=function(){var e=this.readUInt8(),t=this.readUInt8(),n=this.readUInt8(),i=this.readUInt8();return(e<<24)+(t<<16)+(n<<8)+i};I.prototype.readBytes=function(e){var t=this.buffer.slice(this.pos,this.pos+e);return this.pos+=e,t};I.prototype.readString=function(e){var t=this.readBytes(e);return String.fromCharCode.apply(null,t)};I.prototype.readVarInt=function(){for(var e=0;!this.eof();){var t=this.readUInt8();if(t&128)e+=t&127,e<<=7;else return e+t}return e};I.prototype.readChunk=function(){var e=this.readString(4),t=this.readUInt32(),n=this.readBytes(t);return{id:e,length:t,data:n}};var ne=ee;function ie(e,t){if(typeof e!="object")throw"Invalid MIDI data";t=t||{};var n=e.header||{},i=e.tracks||[],a,o=i.length,r=new g;for(ae(r,n,o),a=0;a<o;a++)oe(r,i[a],t);return r.buffer}function ae(e,t,n){var i=t.format==null?1:t.format,a=128;t.timeDivision?a=t.timeDivision:t.ticksPerFrame&&t.framesPerSecond?a=-(t.framesPerSecond&255)<<8|t.ticksPerFrame&255:t.ticksPerBeat&&(a=t.ticksPerBeat&32767);var o=new g;o.writeUInt16(i),o.writeUInt16(n),o.writeUInt16(a),e.writeChunk("MThd",o.buffer)}function oe(e,t,n){var i=new g,a,o=t.length,r=null;for(a=0;a<o;a++)(n.running===!1||!n.running&&!t[a].running)&&(r=null),r=se(i,t[a],r,n.useByte9ForNoteOff);e.writeChunk("MTrk",i.buffer)}function se(e,t,n,i){var a=t.type,o=t.deltaTime,r=t.text||"",f=t.data||[],c=null;switch(e.writeVarInt(o),a){case"sequenceNumber":e.writeUInt8(255),e.writeUInt8(0),e.writeVarInt(2),e.writeUInt16(t.number);break;case"text":e.writeUInt8(255),e.writeUInt8(1),e.writeVarInt(r.length),e.writeString(r);break;case"copyrightNotice":e.writeUInt8(255),e.writeUInt8(2),e.writeVarInt(r.length),e.writeString(r);break;case"trackName":e.writeUInt8(255),e.writeUInt8(3),e.writeVarInt(r.length),e.writeString(r);break;case"instrumentName":e.writeUInt8(255),e.writeUInt8(4),e.writeVarInt(r.length),e.writeString(r);break;case"lyrics":e.writeUInt8(255),e.writeUInt8(5),e.writeVarInt(r.length),e.writeString(r);break;case"marker":e.writeUInt8(255),e.writeUInt8(6),e.writeVarInt(r.length),e.writeString(r);break;case"cuePoint":e.writeUInt8(255),e.writeUInt8(7),e.writeVarInt(r.length),e.writeString(r);break;case"channelPrefix":e.writeUInt8(255),e.writeUInt8(32),e.writeVarInt(1),e.writeUInt8(t.channel);break;case"portPrefix":e.writeUInt8(255),e.writeUInt8(33),e.writeVarInt(1),e.writeUInt8(t.port);break;case"endOfTrack":e.writeUInt8(255),e.writeUInt8(47),e.writeVarInt(0);break;case"setTempo":e.writeUInt8(255),e.writeUInt8(81),e.writeVarInt(3),e.writeUInt24(t.microsecondsPerBeat);break;case"smpteOffset":e.writeUInt8(255),e.writeUInt8(84),e.writeVarInt(5);var u={24:0,25:32,29:64,30:96},y=t.hour&31|u[t.frameRate];e.writeUInt8(y),e.writeUInt8(t.min),e.writeUInt8(t.sec),e.writeUInt8(t.frame),e.writeUInt8(t.subFrame);break;case"timeSignature":e.writeUInt8(255),e.writeUInt8(88),e.writeVarInt(4),e.writeUInt8(t.numerator);var p=Math.floor(Math.log(t.denominator)/Math.LN2)&255;e.writeUInt8(p),e.writeUInt8(t.metronome),e.writeUInt8(t.thirtyseconds||8);break;case"keySignature":e.writeUInt8(255),e.writeUInt8(89),e.writeVarInt(2),e.writeInt8(t.key),e.writeUInt8(t.scale);break;case"sequencerSpecific":e.writeUInt8(255),e.writeUInt8(127),e.writeVarInt(f.length),e.writeBytes(f);break;case"unknownMeta":t.metatypeByte!=null&&(e.writeUInt8(255),e.writeUInt8(t.metatypeByte),e.writeVarInt(f.length),e.writeBytes(f));break;case"sysEx":e.writeUInt8(240),e.writeVarInt(f.length),e.writeBytes(f);break;
1case"endSysEx":e.writeUInt8(247),e.writeVarInt(f.length),e.writeBytes(f);break;case"noteOff":var s=i!==!1&&t.byte9||i&&t.velocity==0?144:128;c=s|t.channel,c!==n&&e.writeUInt8(c),e.writeUInt8(t.noteNumber),e.writeUInt8(t.velocity);break;case"noteOn":c=144|t.channel,c!==n&&e.writeUInt8(c),e.writeUInt8(t.noteNumber),e.writeUInt8(t.velocity);break;case"noteAftertouch":c=160|t.channel,c!==n&&e.writeUInt8(c),e.writeUInt8(t.noteNumber),e.writeUInt8(t.amount);break;case"controller":c=176|t.channel,c!==n&&e.writeUInt8(c),e.writeUInt8(t.controllerType),e.writeUInt8(t.value);break;case"programChange":c=192|t.channel,c!==n&&e.writeUInt8(c),e.writeUInt8(t.programNumber);break;case"channelAftertouch":c=208|t.channel,c!==n&&e.writeUInt8(c),e.writeUInt8(t.amount);break;case"pitchBend":c=224|t.channel,c!==n&&e.writeUInt8(c);var h=8192+t.value,m=h&127,b=h>>7&127;e.writeUInt8(m),e.writeUInt8(b);break;default:throw"Unrecognized event type: "+a}return c}function g(){this.buffer=[]}g.prototype.writeUInt8=function(e){this.buffer.push(e&255)};g.prototype.writeInt8=g.prototype.writeUInt8;g.prototype.writeUInt16=function(e){var t=e>>8&255,n=e&255;this.writeUInt8(t),this.writeUInt8(n)};g.prototype.writeInt16=g.prototype.writeUInt16;g.prototype.writeUInt24=function(e){var t=e>>16&255,n=e>>8&255,i=e&255;this.writeUInt8(t),this.writeUInt8(n),this.writeUInt8(i)};g.prototype.writeInt24=g.prototype.writeUInt24;g.prototype.writeUInt32=function(e){var t=e>>24&255,n=e>>16&255,i=e>>8&255,a=e&255;this.writeUInt8(t),this.writeUInt8(n),this.writeUInt8(i),this.writeUInt8(a)};g.prototype.writeInt32=g.prototype.writeUInt32;g.prototype.writeBytes=function(e){this.buffer=this.buffer.concat(Array.prototype.slice.call(e,0))};g.prototype.writeString=function(e){var t,n=e.length,i=[];for(t=0;t<n;t++)i.push(e.codePointAt(t));this.writeBytes(i)};g.prototype.writeVarInt=function(e){if(e<0)throw"Cannot write negative variable-length integer";if(e<=127)this.writeUInt8(e);else{var t=e,n=[];for(n.push(t&127),t>>=7;t;){var i=t&127|128;n.push(i),t>>=7}this.writeBytes(n.reverse())}};g.prototype.writeChunk=function(e,t){this.writeString(e),this.writeUInt32(t.length),this.writeBytes(t)};var ue=ie;j.parseMidi=ne;j.writeMidi=ue;var _={},S={};Object.defineProperty(S,"__esModule",{value:!0});S.insert=S.search=void 0;function R(e,t,n){n===void 0&&(n="ticks");var i=0,a=e.length,o=a;if(a>0&&e[a-1][n]<=t)return a-1;for(;i<o;){var r=Math.floor(i+(o-i)/2),f=e[r],c=e[r+1];if(f[n]===t){for(var u=r;u<e.length;u++){var y=e[u];y[n]===t&&(r=u)}return r}else{if(f[n]<t&&c[n]>t)return r;f[n]>t?o=r:f[n]<t&&(i=r+1)}}return-1}S.search=R;function ce(e,t,n){if(n===void 0&&(n="ticks"),e.length){var i=R(e,t[n],n);e.splice(i+1,0,t)}else e.push(t)}S.insert=ce;(function(e){Object.defineProperty(e,"__esModule",{value:!0}),e.Header=e.keySignatureKeys=void 0;var t=S,n=new WeakMap;e.keySignatureKeys=["Cb","Gb","Db","Ab","Eb","Bb","F","C","G","D","A","E","B","F#","C#"];var i=function(){function a(o){var r=this;if(this.tempos=[],this.timeSignatures=[],this.keySignatures=[],this.meta=[],this.name="",n.set(this,480),o){n.set(this,o.header.ticksPerBeat),o.tracks.forEach(function(c){c.forEach(function(u){u.meta&&(u.type==="timeSignature"?r.timeSignatures.push({ticks:u.absoluteTime,timeSignature:[u.numerator,u.denominator]}):u.type==="setTempo"?r.tempos.push({bpm:6e7/u.microsecondsPerBeat,ticks:u.absoluteTime}):u.type==="keySignature"&&r.keySignatures.push({key:e.keySignatureKeys[u.key+7],scale:u.scale===0?"major":"minor",ticks:u.absoluteTime}))})});var f=0;o.tracks[0].forEach(function(c){f+=c.deltaTime,c.meta&&(c.type==="trackName"?r.name=c.text:(c.type==="text"||c.type==="cuePoint"||c.type==="marker"||c.type==="lyrics")&&r.meta.push({text:c.text,ticks:f,type:c.type}))}),this.update()}}return a.prototype.update=function(){var o=this,r=0,f=0;this.tempos.sort(function(c,u){return c.ticks-u.ticks}),this.tempos.forEach(function(c,u){var y=u>0?o.tempos[u-1].bpm:o.tempos[0].bpm,p=c.ticks/o.ppq-f,s=60/y*p;c.time=s+r,r=c.time,f+=p}),this.timeSignatures.sort(function(c,u){return c.ticks-u.ticks}),this.timeSignatures.forEach(function(c,u){var y=u>0?o.timeSignatures[u-1]:o.timeSignatures[0],p=(c.ticks-y.ticks)/o.ppq,s=p/y.timeSignature[0]/(y.timeSignature[1]/4);y.measures=y.measures||0,c.measures=s+y.measures})},a.prototype.ticksToSeconds=function(o){var r=(0,t.search)(this.tempos,o);if(r!==-1){var f=this.tempos[r],c=f.time,u=(o-f.ticks)/this.ppq;return c+60/f.bpm*u}else{var y=o/this.ppq;return 60/120*y}},a.prototype.ticksToMeasures=function(o){var r=(0,t.search)(this.timeSignatures,o);if(r!==-1){var f=this.timeSignatures[r],c=(o-f.ticks)/this.ppq;return f.measures+c/(f.timeSignature[0]/f.timeSignature[1])/4}else return o/this.ppq/4},Object.defineProperty(a.prototype,"ppq",{get:function(){return n.get(this)}
1,enumerable:!1,configurable:!0}),a.prototype.secondsToTicks=function(o){var r=(0,t.search)(this.tempos,o,"time");if(r!==-1){var f=this.tempos[r],c=f.time,u=o-c,y=u/(60/f.bpm);return Math.round(f.ticks+y*this.ppq)}else{var p=o/.5;return Math.round(p*this.ppq)}},a.prototype.toJSON=function(){return{keySignatures:this.keySignatures,meta:this.meta,name:this.name,ppq:this.ppq,tempos:this.tempos.map(function(o){return{bpm:o.bpm,ticks:o.ticks}}),timeSignatures:this.timeSignatures}},a.prototype.fromJSON=function(o){this.name=o.name,this.tempos=o.tempos.map(function(r){return Object.assign({},r)}),this.timeSignatures=o.timeSignatures.map(function(r){return Object.assign({},r)}),this.keySignatures=o.keySignatures.map(function(r){return Object.assign({},r)}),this.meta=o.meta.map(function(r){return Object.assign({},r)}),n.set(this,o.ppq),this.update()},a.prototype.setTempo=function(o){this.tempos=[{bpm:o,ticks:0}],this.update()},a}();e.Header=i})(_);var P={},G={};(function(e){Object.defineProperty(e,"__esModule",{value:!0}),e.ControlChange=e.controlChangeIds=e.controlChangeNames=void 0,e.controlChangeNames={1:"modulationWheel",2:"breath",4:"footController",5:"portamentoTime",7:"volume",8:"balance",10:"pan",64:"sustain",65:"portamentoTime",66:"sostenuto",67:"softPedal",68:"legatoFootswitch",84:"portamentoControl"},e.controlChangeIds=Object.keys(e.controlChangeNames).reduce(function(a,o){return a[e.controlChangeNames[o]]=o,a},{});var t=new WeakMap,n=new WeakMap,i=function(){function a(o,r){t.set(this,r),n.set(this,o.controllerType),this.ticks=o.absoluteTime,this.value=o.value}return Object.defineProperty(a.prototype,"number",{get:function(){return n.get(this)},enumerable:!1,configurable:!0}),Object.defineProperty(a.prototype,"name",{get:function(){return e.controlChangeNames[this.number]?e.controlChangeNames[this.number]:null},enumerable:!1,configurable:!0}),Object.defineProperty(a.prototype,"time",{get:function(){var o=t.get(this);return o.ticksToSeconds(this.ticks)},set:function(o){var r=t.get(this);this.ticks=r.secondsToTicks(o)},enumerable:!1,configurable:!0}),a.prototype.toJSON=function(){return{number:this.number,ticks:this.ticks,time:this.time,value:this.value}},a}();e.ControlChange=i})(G);var E={};Object.defineProperty(E,"__esModule",{value:!0});E.createControlChanges=void 0;var M=G;function fe(){return new Proxy({},{get:function(e,t){if(e[t])return e[t];if(M.controlChangeIds.hasOwnProperty(t))return e[M.controlChangeIds[t]]},set:function(e,t,n){return M.controlChangeIds.hasOwnProperty(t)?e[M.controlChangeIds[t]]=n:e[t]=n,!0}})}E.createControlChanges=fe;var V={};Object.defineProperty(V,"__esModule",{value:!0});V.PitchBend=void 0;var H=new WeakMap,he=function(){function e(t,n){H.set(this,n),this.ticks=t.absoluteTime,this.value=t.value}return Object.defineProperty(e.prototype,"time",{get:function(){var t=H.get(this);return t.ticksToSeconds(this.ticks)},set:function(t){var n=H.get(this);this.ticks=n.secondsToTicks(t)},enumerable:!1,configurable:!0}),e.prototype.toJSON=function(){return{ticks:this.ticks,time:this.time,value:this.value}},e}();V.PitchBend=he;var A={},w={};Object.defineProperty(w,"__esModule",{value:!0});w.DrumKitByPatchID=w.InstrumentFamilyByID=w.instrumentByPatchID=void 0;w.instrumentByPatchID=["acoustic grand piano","bright acoustic piano","electric grand piano","honky-tonk piano","electric piano 1","electric piano 2","harpsichord","clavi","celesta","glockenspiel","music box","vibraphone","marimba","xylophone","tubular bells","dulcimer","drawbar organ","percussive organ","rock organ","church organ","reed organ","accordion","harmonica","tango accordion","acoustic guitar (nylon)","acoustic guitar (steel)","electric guitar (jazz)","electric guitar (clean)","electric guitar (muted)","overdriven guitar","distortion guitar","guitar harmonics","acoustic bass","electric bass (finger)","electric bass (pick)","fretless bass","slap bass 1","slap 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