_createEvent(){return vi(this._nextTick,this.floatTime+this.duration)?this.transport.scheduleOnce(this.invoke.bind(this),new Co(this.context,this._nextTick).toSeconds()):-1}_createEvents(t){vi(this._nextTick+this._interval,this.floatTime+this.duration)&&(this._nextTick+=this._interval,this._currentId=this._nextId,this._nextId=this.transport.scheduleOnce(this.invoke.bind(this),new Co(this.context,this._nextTick).toSeconds()))}_restart(t){this.transport.clear(this._currentId),this.transport.clear(this._nextId),this._nextTick=this.floatTime;const e=this.transport.getTicksAtTime(t);mi(e,this.time)&&(this._nextTick=this.floatTime+Math.ceil((e-this.floatTime)/this._interval)*this._interval),this._currentId=this._createEvent(),this._nextTick+=this._interval,this._nextId=this._createEvent()}dispose(){return super.dispose(),this.transport.clear(this._currentId),this.transport.clear(this._nextId),this.transport.off("start",this._boundRestart),this.transport.off("loopStart",this._boundRestart),this.transport.off("ticks",this._boundRestart),this}}class Po extends eo{constructor(){const t=ui(Po.getDefaults(),arguments);super(t),this.name="Transport",this._loop=new Ro(!1),this._loopStart=0,this._loopEnd=0,this._scheduledEvents={},this._timeline=new wi,this._repeatedEvents=new Mo,this._syncedSignals=[],this._swingAmount=0,this._ppq=t.ppq,this._clock=new vo({callback:this._processTick.bind(this),context:this.context,frequency:0,units:"bpm"}),this._bindClockEvents(),this.bpm=this._clock.frequency,this._clock.frequency.multiplier=t.ppq,this.bpm.setValueAtTime(t.bpm,0),Di(this,"bpm"),this._timeSignature=t.timeSignature,this._swingTicks=t.ppq/2}static getDefaults(){return Object.assign(eo.getDefaults(),{bpm:120,loopEnd:"4m",loopStart:0,ppq:192,swing:0,swingSubdivision:"8n",timeSignature:4})}_processTick(t,e){if(this._loop.get(t)&&e>=this._loopEnd&&(this.emit("loopEnd",t),this._clock.setTicksAtTime(this._loopStart,t),e=this._loopStart,this.emit("loopStart",t,this._clock.getSecondsAtTime(t)),this.emit("loop",t)),this._swingAmount>0&&e%this._ppq!=0&&e%(2*this._swingTicks)!=0){const s=e%(2*this._swingTicks)/(2*this._swingTicks),n=Math.sin(s*Math.PI)*this._swingAmount;t+=new Co(this.context,2*this._swingTicks/3).toSeconds()*n}Xn(!0),this._timeline.forEachAtTime(e,(e=>e.invoke(t))),Xn(!1)}schedule(t,e){const s=new Vo(this,{callback:t,time:new Ki(this.context,e).toTicks()});return this._addEvent(s,this._timeline)}scheduleRepeat(t,e,s,n=1/0){const i=new No(this,{callback:t,duration:new Zi(this.context,n).toTicks(),interval:new Zi(this.context,e).toTicks(),time:new Ki(this.context,s).toTicks()});return this._addEvent(i,this._repeatedEvents)}scheduleOnce(t,e){const s=new Vo(this,{callback:t,once:!0,time:new Ki(this.context,e).toTicks()});return this._addEvent(s,this._timeline)}clear(t){if(this._scheduledEvents.hasOwnProperty(t)){const e=this._scheduledEvents[t.toString()];e.timeline.remove(e.event),e.event.dispose(),delete this._scheduledEvents[t.toString()]}return this}_addEvent(t,e){return this._scheduledEvents[t.id.toString()]={event:t,timeline:e},e.add(t),t.id}cancel(t=0){const e=this.toTicks(t);return this._timeline.forEachFrom(e,(t=>this.clear(t.id))),this._repeatedEvents.forEachFrom(e,(t=>this.clear(t.id))),this}_bindClockEvents(){this._clock.on("start",((t,e)=>{e=new Co(this.context,e).toSeconds(),this.emit("start",t,e)})),this._clock.on("stop",(t=>{this.emit("stop",t)})),this._clock.on("pause",(t=>{this.emit("pause",t)}))}get state(){return this._clock.getStateAtTime(this.now())}start(t,e){let s;return this.context.resume(),Fn(e)&&(s=this.toTicks(e)),this._clock.start(t,s),this}stop(t){return this._clock.stop(t),this}pause(t){return this._clock.pause(t),this}toggle(t){return t=this.toSeconds(t),"started"!==this._clock.getStateAtTime(t)?this.start(t):this.stop(t),this}get timeSignature(){return this._timeSignature}set timeSignature(t){Ln(t)&&(t=t[0]/t[1]*4),this._timeSignature=t}get loopStart(){return new Zi(this.context,this._loopStart,"i").toSeconds()}set loopStart(t){this._loopStart=this.toTicks(t)}get loopEnd(){return new Zi(this.context,this._loopEnd,"i").toSeconds()}set loopEnd(t){this._loopEnd=this.toTicks(t)}get loop(){return this._loop.get(this.now())}set loop(t){this._loop.set(t,this.now())}setLoopPoints(t,e){return this.loopStart=t,this.loopEnd=e,this}get swing(){return this._swingAmount}set swing(t){this._swingAmount=t}get swingSubdivision(){return new Co(this.context,this._swingTicks).toNotation()}set swingSubdivision(t){this._swingTicks=this.toTicks(t)}get position(){const t=this.now(),e=this._clock.getTicksAtTime(t);return new Co(this.context,e).toBarsBeatsSixteenths()}set position(t){const e=this.toTicks(t);this.ticks=e}get seconds(){return this._clock.seconds}set seconds(t){const e=this.now(),s=this._clock.frequency.timeToTicks(t,e);this.ticks=s}get progress(){if(this.loop){const t=this.now();return(this._clock.getTicksAtTime(t)-this._loopStart)/(this._loopEnd-this._loopStart)}return 0}g