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n=this.maxCanvasWidth+this.overlap,i=this.canvases.length-1;this.canvases.forEach((function(t,r){r==i&&(n=e.width-e.maxCanvasWidth*i),e.updateDimensions(t,n,e.height),t.clearWave()}))}},{key:"addCanvas",value:function(){var e=new this.EntryClass;e.canvasContextAttributes=this.canvasContextAttributes,e.hasProgressCanvas=this.hasProgressCanvas,e.halfPixel=this.halfPixel;var t=this.maxCanvasElementWidth*this.canvases.length,r=a.withOrientation(this.wrapper.appendChild(document.createElement("canvas")),this.params.vertical);if(this.style(r,{position:"absolute",zIndex:2,left:t+"px",top:0,bottom:0,height:"100%",pointerEvents:"none"}),e.initWave(r),this.hasProgressCanvas){var n=a.withOrientation(this.progressWave.appendChild(document.createElement("canvas")),this.params.vertical);this.style(n,{position:"absolute",left:t+"px",top:0,bottom:0,height:"100%"}),e.initProgress(n)}this.canvases.push(e)}},{key:"removeCanvas",value:function(){var e=this.canvases[this.canvases.length-1];e.wave.parentElement.removeChild(e.wave.domElement),this.hasProgressCanvas&&e.progress.parentElement.removeChild(e.progress.domElement),e&&(e.destroy(),e=null),this.canvases.pop()}},{key:"updateDimensions",value:function(e,t,r){var n=Math.round(t/this.params.pixelRatio),i=Math.round(this.width/this.params.pixelRatio);e.updateDimensions(n,i,t,r),this.style(this.progressWave,{display:"block"})}},{key:"clearWave",value:function(){var e=this;a.frame((function(){e.canvases.forEach((function(e){return e.clearWave()}))}))()}},{key:"drawBars",value:function(e,t,r,n){var i=this;return this.prepareDraw(e,t,r,n,(function(e){var t=e.absmax,a=e.hasMinVals,s=(e.height,e.offsetY),o=e.halfH,u=e.peaks,l=e.channelIndex;if(void 0!==r)for(var c=a?2:1,f=u.length/c,h=i.params.barWidth*i.params.pixelRatio,d=h+(null===i.params.barGap?Math.max(i.params.pixelRatio,~~(h/2)):Math.max(i.params.pixelRatio,i.params.barGap*i.params.pixelRatio)),p=f/i.width,v=n,y=r;y<v;y+=d){var m=u[Math.floor(y*p*c)]||0,b=Math.round(m/t*o);0==b&&i.params.barMinHeight&&(b=i.params.barMinHeight),i.fillRect(y+i.halfPixel,o-b+s,h+i.halfPixel,2*b,i.barRadius,l)}}))}},{key:"drawWave",value:function(e,t,r,n){var i=this;return this.prepareDraw(e,t,r,n,(function(e){var t=e.absmax,a=e.hasMinVals,s=(e.height,e.offsetY),o=e.halfH,u=e.peaks,l=e.channelIndex;if(!a){for(var c=[],f=u.length,h=0;h<f;h++)c[2*h]=u[h],c[2*h+1]=-u[h];u=c}void 0!==r&&i.drawLine(u,t,o,s,r,n,l),i.fillRect(0,o+s-i.halfPixel,i.width,i.halfPixel,i.barRadius,l)}))}},{key:"drawLine",value:function(e,t,r,n,i,a,s){var o=this,u=this.params.splitChannelsOptions.channelColors[s]||{},l=u.waveColor,c=u.progressColor;this.canvases.forEach((function(s,u){o.setFillStyles(s,l,c),o.applyCanvasTransforms(s,o.params.vertical),s.drawLines(e,t,r,n,i,a)}))}},{key:"fillRect",value:function(e,t,r,n,i,a){for(var s=Math.floor(e/this.maxCanvasWidth),o=Math.min(Math.ceil((e+r)/this.maxCanvasWidth)+1,this.canvases.length),u=s;u<o;u++){var l=this.canvases[u],c=u*this.maxCanvasWidth,f={x1:Math.max(e,u*this.maxCanvasWidth),y1:t,x2:Math.min(e+r,u*this.maxCanvasWidth+l.wave.width),y2:t+n};if(f.x1<f.x2){var h=this.params.splitChannelsOptions.channelColors[a]||{},d=h.waveColor,p=h.progressColor;this.setFillStyles(l,d,p),this.applyCanvasTransforms(l,this.params.vertical),l.fillRects(f.x1-c,f.y1,f.x2-f.x1,f.y2-f.y1,i)}}}},{key:"hideChannel",value:function(e){return this.params.splitChannels&&this.params.splitChannelsOptions.filterChannels.includes(e)}},{key:"prepareDraw",value:function(e,t,r,n,i,s,o){var u=this;return a.frame((function(){if(e[0]instanceof Array){var l=e;if(u.params.splitChannels){var c,f=l.filter((function(e,t){return!u.hideChannel(t)}));return u.params.splitChannelsOptions.overlay||u.setHeight(Math.max(f.length,1)*u.params.height*u.params.pixelRatio),u.params.splitChannelsOptions&&u.params.splitChannelsOptions.relativeNormalization&&(c=a.max(l.map((function(e){return 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r="WebAudio"===this.params.backend,n=this.backend.isPaused();r&&!n&&this.backend.pause();var i=this.params.scrollParent;this.params.scrollParent=!1,this.backend.seekTo(e*this.getDuration()),this.drawer.progress(e),r&&!n&&this.backend.play(),this.params.scrollParent=i,this.fireEvent("seek",e)}},{key:"stop",value:function(){this.pause(),this.seekTo(0),this.drawer.progress(0)}},{key:"setSinkId",value:function(e){return this.backend.setSinkId(e)}},{key:"setVolume",value:function(e){this.backend.setVolume(e),this.fireEvent("volume",e)}},{key:"getVolume",value:function(){return this.backend.getVolume()}},{key:"setPlaybackRate",value:function(e){this.backend.setPlaybackRate(e)}},{key:"getPlaybackRate",value:function(){return this.backend.getPlaybackRate()}},{key:"toggleMute",value:function(){this.setMute(!this.isMuted)}},{key:"setMute",value:function(e){e!==this.isMuted?(this.backend.setMute?(this.backend.setMute(e),this.isMuted=e):e?(this.savedVolume=this.backend.getVolume(),this.backend.setVolume(0),this.isMuted=!0,this.fireEvent("volume",0)):(this.backend.setVolume(this.savedVolume),this.isMuted=!1,this.fireEvent("volume",this.savedVolume)),this.fireEvent("mute",this.isMuted)):this.fireEvent("mute",this.isMuted)}},{key:"getMute",value:function(){return this.isMuted}},{key:"getFilters",value:function(){return this.backend.filters||[]}},{key:"toggleScroll",value:function(){this.params.scrollParent=!this.params.scrollParent,this.drawBuffer()}},{key:"toggleInteraction",value:function(){this.params.interact=!this.params.interact}},{key:"getWaveColor",value:function(){return this.params.waveColor}},{key:"setWaveColor",value:function(e){this.params.waveColor=e,this.drawBuffer()}},{key:"getProgressColor",value:function(){return this.params.progressColor}},{key:"setProgressColor",value:function(e){this.params.progressColor=e,this.drawBuffer()}},{key:"getBackgroundColor",value:function(){return this.params.backgroundColor}},{key:"setBackgroundColor",value:function(e){this.params.backgroundColor=e,i.style(this.container,{background:this.params.backgroundColor})}},{key:"getCursorColor",value:function(){return this.params.cursorColor}},{key:"setCursorColor",value:function(e){this.params.cursorColor=e,this.drawer.updateCursor()}},{key:"getHeight",value:function(){return this.params.height}},{key:"setHeight",value:function(e){this.params.height=e,this.drawer.setHeight(e*this.params.pixelRatio),this.drawBuffer()}},{key:"setFilteredChannels",value:function(e){this.params.splitChannelsOptions.filterChannels=e,this.drawBuffer()}},{key:"drawBuffer",value:function(){var e,t=Math.round(this.getDuration()*this.params.minPxPerSec*this.params.pixelRatio),r=this.drawer.getWidth(),n=t,i=0,a=Math.max(i+r,n);if(this.params.fillParent&&(!this.params.scrollParent||t<r)&&(i=0,a=n=r),this.params.partialRender){var s,o=this.peakCache.addRangeToPeakCache(n,i,a);for(s=0;s<o.length;s++)e=this.backend.getPeaks(n,o[s][0],o[s][1]),this.drawer.drawPeaks(e,n,o[s][0],o[s][1])}else e=this.backend.getPeaks(n,i,a),this.drawer.drawPeaks(e,n,i,a);this.fireEvent("redraw",e,n)}},{key:"zoom",value:function(e){e?(this.params.minPxPerSec=e,this.params.scrollParent=!0):(this.params.minPxPerSec=this.defaultParams.minPxPerSec,this.params.scrollParent=!1),this.drawBuffer(),this.drawer.progress(this.backend.getPlayedPercents()),this.drawer.recenter(this.getCurrentTime()/this.getDuration()),this.fireEvent("zoom",e)}},{key:"loadArrayBuffer",value:function(e){var t=this;this.decodeArrayBuffer(e,(function(e){t.isDestroyed||t.loadDecodedBuffer(e)}))}},{key:"loadDecodedBuffer",value:function(e){this.backend.load(e),this.drawBuffer(),this.isReady=!0,this.fireEvent("ready")}},{key:"loadBlob",value:function(e){var t=this,r=new FileReader;r.addEventListener("progress",(function(e){return t.onProgress(e)})),r.addEventListener("load",(function(e){return t.loadArrayBuffer(e.target.result)})),r.addEventListener("error",(function(){return t.fireEvent("error","Error reading file")})),r.readAsArrayBuffer(e),this.empty()}},{key:"load",value:function(e,t,r,n){if(!e)throw new Error("url parameter cannot be empty");if(this.empty(),r){var i={"Preload is not 'auto', 'none' or 'metadata'":-1===["auto","metadata","none"].indexOf(r),"Peaks are not provided":!t,"Backend is not of type 'MediaElement' or 'MediaElementWebAudio'":-1===["MediaElement","MediaElementWebAudio"].indexOf(this.params.backend),"Url is not of type string":"string"!==typeof 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s=e;this.backend.loadElt(s,t),a=s.src}this.tmpEvents.push(this.backend.once("canplay",(function(){i.backend.destroyed||(i.drawBuffer(),i.isReady=!0,i.fireEvent("ready"))})),this.backend.once("error",(function(e){return i.fireEvent("error",e)}))),t&&(this.backend.setPeaks(t,n),this.drawBuffer(),this.fireEvent("waveform-ready")),t&&!this.params.forceDecode||!this.backend.supportsWebAudio()||this.getArrayBuffer(a,(function(e){i.decodeArrayBuffer(e,(function(e){i.backend.buffer=e,i.backend.setPeaks(null),i.drawBuffer(),i.fireEvent("waveform-ready")}))}))}},{key:"decodeArrayBuffer",value:function(e,t){var r=this;this.arraybuffer=e,this.backend.decodeArrayBuffer(e,(function(n){r.isDestroyed||r.arraybuffer!=e||(t(n),r.arraybuffer=null)}),(function(){return r.fireEvent("error","Error decoding audiobuffer")}))}},{key:"getArrayBuffer",value:function(e,t){var r=this,n=Object.assign({url:e,responseType:"arraybuffer"},this.params.xhr),a=i.fetchFile(n);return 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Array(e),r=0;r<e;r++)t[r]=arguments[r];this.setFilters(t)}},{key:"setFilters",value:function(e){this.disconnectFilters(),e&&e.length&&(this.filters=e,this.analyser.disconnect(),e.reduce((function(e,t){return e.connect(t),t}),this.analyser).connect(this.gainNode))}},{key:"createScriptNode",value:function(){this.params.audioScriptProcessor?this.scriptNode=this.params.audioScriptProcessor:this.ac.createScriptProcessor?this.scriptNode=this.ac.createScriptProcessor(a.scriptBufferSize):this.scriptNode=this.ac.createJavaScriptNode(a.scriptBufferSize),this.scriptNode.connect(this.ac.destination)}},{key:"addOnAudioProcess",value:function(){var e=this;this.scriptNode.onaudioprocess=function(){var t=e.getCurrentTime();t>=e.getDuration()?(e.setState(p),e.fireEvent("pause")):t>=e.scheduledPause?e.pause():e.state===e.states.playing&&e.fireEvent("audioprocess",t)}}},{key:"removeOnAudioProcess",value:function(){this.scriptNode.onaudioprocess=null}},{key:"createAnalyserNode",value:function(){this.analyser=this.ac.createAnalyser(),this.analyser.connect(this.gainNode)}},{key:"createVolumeNode",value:function(){this.ac.createGain?this.gainNode=this.ac.createGain():this.gainNode=this.ac.createGainNode(),this.gainNode.connect(this.ac.destination)}},{key:"setSinkId",value:function(e){if(e){var t=new window.Audio;if(!t.setSinkId)return Promise.reject(new Error("setSinkId is not supported in your browser"));t.autoplay=!0;var r=this.ac.createMediaStreamDestination();return this.gainNode.disconnect(),this.gainNode.connect(r),t.srcObject=r.stream,t.setSinkId(e)}return Promise.reject(new Error("Invalid deviceId: 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t,r=this.buffer?this.buffer.numberOfChannels:1;for(t=0;t<r;t++)this.splitPeaks[t]=[],this.splitPeaks[t][2*(e-1)]=0,this.splitPeaks[t][2*(e-1)+1]=0;this.mergedPeaks[2*(e-1)]=0,this.mergedPeaks[2*(e-1)+1]=0}}},{key:"getPeaks",value:function(e,t,r){if(this.peaks)return this.peaks;if(!this.buffer)return[];if(t=t||0,r=r||e-1,this.setLength(e),!this.buffer)return this.params.splitChannels?this.splitPeaks:this.mergedPeaks;if(!this.buffer.length){var n=this.createBuffer(1,4096,this.sampleRate);this.buffer=n.buffer}var i,a=this.buffer.length/e,s=~~(a/10)||1,o=this.buffer.numberOfChannels;for(i=0;i<o;i++){var u=this.splitPeaks[i],l=this.buffer.getChannelData(i),c=void 0;for(c=t;c<=r;c++){var f=~~(c*a),h=~~(f+a),d=l[f],p=d,v=void 0;for(v=f;v<h;v+=s){var y=l[v];y>p&&(p=y),y<d&&(d=y)}u[2*c]=p,u[2*c+1]=d,(0==i||p>this.mergedPeaks[2*c])&&(this.mergedPeaks[2*c]=p),(0==i||d<this.mergedPeaks[2*c+1])&&(this.mergedPeaks[2*c+1]=d)}}return 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