wavesurfer.js/dist/wavesurfer.esm.js

Audio waveform player

function t(t,e,i,s){return new(i||(i=Promise))((function(n,r){function o(t){try{h(s.next(t))}catch(t){r(t)}}function a(t){try{h(s.throw(t))}catch(t){r(t)}}function h(t){var e;t.done?n(t.value):(e=t.value,e instanceof i?e:new i((function(t){t(e)}))).then(o,a)}h((s=s.apply(t,e||[])).next())}))}"function"==typeof SuppressedError&&SuppressedError;class e{constructor(){this.listeners={}}on(t,e,i){if(this.listeners[t]||(this.listeners[t]=new Set),this.listeners[t].add(e),null==i?void 0:i.once){const i=()=>{this.un(t,i),this.un(t,e)};return this.on(t,i),i}return()=>this.un(t,e)}un(t,e){var i;null===(i=this.listeners[t])||void 0===i||i.delete(e)}once(t,e){return this.on(t,e,{once:!0})}unAll(){this.listeners={}}emit(t,...e){this.listeners[t]&&this.listeners[t].forEach((t=>t(...e)))}}const i={decode:function(e,i){return t(this,void 0,void 0,(function*(){const t=new AudioContext({sampleRate:i});return t.decodeAudioData(e).finally((()=>t.close()))}))},createBuffer:function(t,e){return"number"==typeof t[0]&&(t=[t]),function(t){const e=t[0];if(e.some((t=>t>1||t<-1))){const i=e.length;let s=0;for(let t=0;t<i;t++){const i=Math.abs(e[t]);i>s&&(s=i)}for(const e of t)for(let t=0;t<i;t++)e[t]/=s}}(t),{duration:e,length:t[0].length,sampleRate:t[0].length/e,numberOfChannels:t.length,getChannelData:e=>null==t?void 0:t[e],copyFromChannel:AudioBuffer.prototype.copyFromChannel,copyToChannel:AudioBuffer.prototype.copyToChannel}}};function s(t,e){const i=e.xmlns?document.createElementNS(e.xmlns,t):document.createElement(t);for(const[t,n]of Object.entries(e))if("children"===t)for(const[t,n]of Object.entries(e))"string"==typeof n?i.appendChild(document.createTextNode(n)):i.appendChild(s(t,n));else"style"===t?Object.assign(i.style,n):"textContent"===t?i.textContent=n:i.setAttribute(t,n.toString());return i}function n(t,e,i){const n=s(t,e||{});return null==i||i.appendChild(n),n}var r=Object.freeze({__proto__:null,createElement:n,default:n});const o={fetchBlob:function(e,i,s){return t(this,void 0,void 0,(function*(){const n=yield fetch(e,s);if(n.status>=400)throw new Error(`Failed to fetch ${e}: ${n.status} (${n.statusText})`);return function(e,i){t(this,void 0,void 0,(function*(){if(!e.body||!e.headers)return;const s=e.body.getReader(),n=Number(e.headers.get("Content-Length"))||0;let r=0;const o=e=>t(this,void 0,void 0,(function*(){r+=(null==e?void 0:e.length)||0;const t=Math.round(r/n*100);i(t)})),a=()=>t(this,void 0,void 0,(function*(){let t;try{t=yield s.read()}catch(t){return}t.done||(o(t.value),yield a())}));a()}))}(n.clone(),i),n.blob()}))}};class a extends e{constructor(t){super(),this.isExternalMedia=!1,t.media?(this.media=t.media,this.isExternalMedia=!0):this.media=document.createElement("audio"),t.mediaControls&&(this.media.controls=!0),t.autoplay&&(this.media.autoplay=!0),null!=t.playbackRate&&this.onMediaEvent("canplay",(()=>{null!=t.playbackRate&&(this.media.playbackRate=t.playbackRate)}),{once:!0})}onMediaEvent(t,e,i){return this.media.addEventListener(t,e,i),()=>this.media.removeEventListener(t,e,i)}getSrc(){return this.media.currentSrc||this.media.src||""}revokeSrc(){const t=this.getSrc();t.startsWith("blob:")&&URL.revokeObjectURL(t)}canPlayType(t){return""!==this.media.canPlayType(t)}setSrc(t,e){const i=this.getSrc();if(t&&i===t)return;this.revokeSrc();const s=e instanceof Blob&&(this.canPlayType(e.type)||!t)?URL.createObjectURL(e):t;i&&(this.media.src="");try{this.media.src=s}catch(e){this.media.src=t}}destroy(){this.isExternalMedia||(this.media.pause(),this.media.remove(),this.revokeSrc(),this.media.src="",this.media.load())}setMediaElement(t){this.media=t}play(){return t(this,void 0,void 0,(function*(){return this.media.play()}))}pause(){this.media.pause()}isPlaying(){return!this.media.paused&&!this.media.ended}setTime(t){this.media.currentTime=Math.max(0,Math.min(t,this.getDuration()))}getDuration(){return this.media.duration}getCurrentTime(){return this.media.currentTime}getVolume(){return this.media.volume}setVolume(t){this.media.volume=t}getMuted(){return this.media.muted}setMuted(t){this.media.muted=t}getPlaybackRate(){return this.media.playbackRate}isSeeking(){return this.media.seeking}setPlaybackRate(t,e){null!=e&&(this.media.preservesPitch=e),this.media.playbackRate=t}getMediaElement(){return this.media}setSinkId(t){return this.media.setSinkId(t)}}class h extends e{constructor(t,e){super(),this.timeouts=[],this.isScrollable=!1,this.audioData=null,this.resizeObserver=null,this.lastContainerWidth=0,this.isDragging=!1,this.subscriptions=[],this.unsubscribeOnScroll=[],this.subscriptions=[],this.options=t;const i=this.parentFromOptionsContainer(t.container);this.parent=i;const[s,n]=this.initHtml();i.appendChild(s),this.container=s,this.scrollContainer=n.querySelector(".scroll"),this.wrapper=n.querySelector(".wrapper"),this.canvasWrapper=n.querySelector(".canvases"),this.progressWrapper=n.querySelector(".progress"),this.cursor=n.querySelector(".cursor"),e&&n.appendChild(e),this.initEvents()}parentFromOptionsContainer(t){let e;if("string"==typeof t?e=document.querySelector(t):t instanceof HTMLElement&&(e=t),!e)throw new Error("Container not found");return e}initEvents(){const t=t=>{const e=this.wrapper.getBoundingClientRect(),i=t.clientX-e.left,s=t.clientY-e.top;return[i/e.width,s/e.height]};if(this.wrapper.addEventListener("click",(e=>{const[i,s]=t(e);this.emit("click",i,s)})),this.wrapper.addEventListener("dblclick",(e=>{const[i,s]=t(e);this.emit("dblclick",i,s)})),!0!==this.options.dragToSeek&&"object"!=typeof this.options.dragToSeek||this.initDrag(),this.scrollContainer.addEventListener("scroll",(()=>{const{scrollLeft:t,scrollWidth:e,clientWidth:i}=this.scrollContainer,s=t/e,n=(t+i)/e;this.emit("scroll",s,n,t,t+i)})),"function"==typeof ResizeObserver){const t=this.createDelay(100);this.resizeObserver=new ResizeObserver((()=>{t().then((()=>this.onContainerResize())).catch((()=>{}))})),this.resizeObserver.observe(this.scrollContainer)}}onContainerResize(){const t=this.parent.clientWidth;t===this.lastContainerWidth&&"auto"!==this.options.height||(this.lastContainerWidth=t,this.reRender())}initDrag(){this.subscriptions.push(function(t,e,i,s,n=3,r=0,o=100){if(!t)return()=>{};const a=matchMedia("(pointer: coarse)").matches;let h=()=>{};const l=l=>{if(l.button!==r)return;l.preventDefault(),l.stopPropagation();let d=l.clientX,c=l.clientY,u=!1;const p=Date.now(),m=s=>{if(s.preventDefault(),s.stopPropagation(),a&&Date.now()-p<o)return;const r=s.clientX,h=s.clientY,l=r-d,m=h-c;if(u||Math.abs(l)>n||Math.abs(m)>n){const s=t.getBoundingClientRect(),{left:n,top:o}=s;u||(null==i||i(d-n,c-o),u=!0),e(l,m,r-n,h-o),d=r,c=h}},f=e=>{if(u){const i=e.clientX,n=e.clientY,r=t.getBoundingClientRect(),{left:o,top:a}=r;null==s||s(i-o,n-a)}h()},g=t=>{t.relatedTarget&&t.relatedTarget!==document.documentElement||f(t)},v=t=>{u&&(t.stopPropagation(),t.preventDefault())},b=t=>{u&&t.preventDefault()};document.addEventListener("pointermove",m),document.addEventListener("pointerup",f),document.addEventListener("pointerout",g),document.addEventListener("pointercancel",g),document.addEventListener("touchmove",b,{passive:!1}),document.addEventListener("click",v,{capture:!0}),h=()=>{document.removeEventListener("pointermove",m),document.removeEventListener("pointerup",f),document.removeEventListener("pointerout",g),document.removeEventListener("pointercancel",g),document.removeEventListener("touchmove",b),setTimeout((()=>{document.removeEventListener("click",v,{capture:!0})}),10)}};return t.addEventListener("pointerdown",l),()=>{h(),t.removeEventListener("pointerdown",l)}}(this.wrapper,((t,e,i)=>{this.emit("drag",Math.max(0,Math.min(1,i/this.wrapper.getBoundingClientRect().width)))}),(t=>{this.isDragging=!0,this.emit("dragstart",Math.max(0,Math.min(1,t/this.wrapper.getBoundingClientRect().width)))}),(t=>{this.isDragging=!1,this.emit("dragend",Math.max(0,Math.min(1,t/this.wrapper.getBoundingClientRect().width)))})))}getHeight(t,e){var i;const s=(null===(i=this.audioData)||void 0===i?void 0:i.numberOfChannels)||1;if(null==t)return 128;if(!isNaN(Number(t)))return Number(t);if("auto"===t){const t=this.parent.clientHeight||128;return(null==e?void 0:e.every((t=>!t.overlay)))?t/s:t}return 128}initHtml(){const t=document.createElement("div"),e=t.attachShadow({mode:"open"}),i=this.options.cspNonce&&"string"==typeof this.options.cspNonce?this.options.cspNonce.replace(/"/g,""):"";return e.innerHTML=`\n      <style${i?` nonce="${i}"`:""}>\n        :host {\n          user-select: none;\n          min-width: 1px;\n        }\n        :host audio {\n          display: block;\n          width: 100%;\n        }\n        :host .scroll {\n          overflow-x: auto;\n          overflow-y: hidden;\n          width: 100%;\n          position: relative;\n        }\n        :host .noScrollbar {\n          scrollbar-color: transparent;\n          scrollbar-width: none;\n        }\n        :host .noScrollbar::-webkit-scrollbar {\n          display: none;\n          -webkit-appearance: none;\n        }\n        :host .wrapper {\n          position: relative;\n          overflow: visible;\n          z-index: 2;\n        }\n        :host .canvases {\n          min-height: ${this.getHeight(this.options.height,this.options.splitChannels)}px;\n        }\n        :host .canvases > div {\n          position: relative;\n        }\n        :host canvas {\n          display: block;\n          position: absolute;\n          top: 0;\n          image-rendering: pixelated;\n        }\n        :host .progress {\n          pointer-events: none;\n          position: absolute;\n          z-index: 2;\n          top: 0;\n          left: 0;\n          width: 0;\n          height: 100%;\n          overflow: hidden;\n        }\n        :host .progress > div {\n          position: relative;\n        }\n        :host .cursor {\n          pointer-events: none;\n          position: absolute;\n          z-index: 5;\n          top: 0;\n          left: 0;\n          height: 100%;\n          border-radius: 2px;\n        }\n      </style>\n\n      <div class="scroll" part="scroll">\n        <div class="wrapper" part="wrapper">\n          <div class="canvases" part="canvases"></div>\n          <div class="progress" part="progress"></div>\n          <div class="cursor" part="cursor"></div>\n        </div>\n      </div>\n    `,[t,e]}setOptions(t){if(this.options.container!==t.container){const e=this.parentFromOptionsContainer(t.container);e.appendChild(this.container),this.parent=e}!0!==t.dragToSeek&&"object"!=typeof this.options.dragToSeek||this.initDrag(),this.options=t,this.reRender()}getWrapper(){return this.wrapper}getWidth(){return this.scrollContainer.clientWidth}getScroll(){return this.scrollContainer.scrollLeft}setScroll(t){this.scrollContainer.scrollLeft=t}setScrollPercentage(t){const{scrollWidth:e}=this.scrollContainer,i=e*t;this.setScroll(i)}destroy(){var t,e;this.subscriptions.forEach((t=>t())),this.container.remove(),null===(t=this.resizeObserver)||void 0===t||t.disconnect(),null===(e=this.unsubscribeOnScroll)||void 0===e||e.forEach((t=>t())),this.unsubscribeOnScroll=[]}createDelay(t=10){let e,i;const s=()=>{e&&clearTimeout(e),i&&i()};return this.timeouts.push(s),()=>new Promise(((n,r)=>{s(),i=r,e=setTimeout((()=>{e=void 0,i=void 0,n()}),t)}))}convertColorValues(t){if(!Array.isArray(t))return t||"";if(t.length<2)return t[0]||"";const e=document.createElement("canvas"),i=e.getContext("2d"),s=e.height*(window.devicePixelRatio||1),n=i.createLinearGradient(0,0,0,s),r=1/(t.length-1);return t.forEach(((t,e)=>{const i=e*r;n.addColorStop(i,t)})),n}getPixelRatio(){return Math.max(1,window.devicePixelRatio||1)}renderBarWaveform(t,e,i,s){const n=t[0],r=t[1]||t[0],o=n.length,{width:a,height:h}=i.canvas,l=h/2,d=this.getPixelRatio(),c=e.barWidth?e.barWidth*d:1,u=e.barGap?e.barGap*d:e.barWidth?c/2:0,p=e.barRadius||0,m=a/(c+u)/o,f=p&&"roundRect"in i?"roundRect":"rect";i.beginPath();let g=0,v=0,b=0;for(let t=0;t<=o;t++){const o=Math.round(t*m);if(o>g){const t=Math.round(v*l*s),n=t+Math.round(b*l*s)||1;let r=l-t;"top"===e.barAlign?r=0:"bottom"===e.barAlign&&(r=h-n),i[f](g*(c+u),r,c,n,p),g=o,v=0,b=0}const a=Math.abs(n[t]||0),d=Math.abs(r[t]||0);a>v&&(v=a),d>b&&(b=d)}i.fill(),i.closePath()}renderLineWaveform(t,e,i,s){const n=e=>{const n=t[e]||t[0],r=n.length,{height:o}=i.canvas,a=o/2,h=i.canvas.width/r;i.moveTo(0,a);let l=0,d=0;for(let t=0;t<=r;t++){const r=Math.round(t*h);if(r>l){const t=a+(Math.round(d*a*s)||1)*(0===e?-1:1);i.lineTo(l,t),l=r,d=0}const o=Math.abs(n[t]||0);o>d&&(d=o)}i.lineTo(l,a)};i.beginPath(),n(0),n(1),i.fill(),i.closePath()}renderWaveform(t,e,i){if(i.fillStyle=this.convertColorValues(e.waveColor),e.renderFunction)return void e.renderFunction(t,i);let s=e.barHeight||1;if(e.normalize){const e=Array.from(t[0]).reduce(((t,e)=>Math.max(t,Math.abs(e))),0);s=e?1/e:1}e.barWidth||e.barGap||e.barAlign?this.renderBarWaveform(t,e,i,s):this.renderLineWaveform(t,e,i,s)}renderSingleCanvas(t,e,i,s,n,r,o){const a=this.getPixelRatio(),h=document.createElement("canvas");h.width=Math.round(i*a),h.height=Math.round(s*a),h.style.width=`${i}px`,h.style.height=`${s}px`,h.style.left=`${Math.round(n)}px`,r.appendChild(h);const l=h.getContext("2d");if(this.renderWaveform(t,e,l),h.width>0&&h.height>0){const t=h.cloneNode(),i=t.getContext("2d");i.drawImage(h,0,0),i.globalCompositeOperation="source-in",i.fillStyle=this.convertColorValues(e.progressColor),i.fillRect(0,0,h.width,h.height),o.appendChild(t)}}renderMultiCanvas(t,e,i,s,n,r){const o=this.getPixelRatio(),{clientWidth:a}=this.scrollContainer,l=i/o;let d=Math.min(h.MAX_CANVAS_WIDTH,a,l),c={};if(0===d)return;if(e.barWidth||e.barGap){const t=e.barWidth||.5,i=t+(e.barGap||t/2);d%i!=0&&(d=Math.floor(d/i)*i)}const u=i=>{if(i<0||i>=p)return;if(c[i])return;c[i]=!0;const o=i*d,a=Math.min(l-o,d);if(a<=0)return;const h=t.map((t=>{const e=Math.floor(o/l*t.length),i=Math.floor((o+a)/l*t.length);return t.slice(e,i)}));this.renderSingleCanvas(h,e,a,s,o,n,r)},p=Math.ceil(l/d);if(!this.isScrollable){for(let t=0;t<p;t++)u(t);return}const m=this.scrollContainer.scrollLeft/l,f=Math.floor(m*p);if(u(f-1),u(f),u(f+1),p>1){const t=this.on("scroll",(()=>{const{scrollLeft:t}=this.scrollContainer,e=Math.floor(t/l*p);Object.keys(c).length>h.MAX_NODES&&(n.innerHTML="",r.innerHTML="",c={}),u(e-1),u(e),u(e+1)}));this.unsubscribeOnScroll.push(t)}}renderChannel(t,e,i,s){var{overlay:n}=e,r=function(t,e){var i={};for(var s in t)Object.prototype.hasOwnProperty.call(t,s)&&e.indexOf(s)<0&&(i[s]=t[s]);if(null!=t&&"function"==typeof Object.getOwnPropertySymbols){var n=0;for(s=Object.getOwnPropertySymbols(t);n<s.length;n++)e.indexOf(s[n])<0&&Object.prototype.propertyIsEnumerable.call(t,s[n])&&(i[s[n]]=t[s[n]])}return i}(e,["overlay"]);const o=document.createElement("div"),a=this.getHeight(r.height,r.splitChannels);o.style.height=`${a}px`,n&&s>0&&(o.style.marginTop=`-${a}px`),this.canvasWrapper.style.minHeight=`${a}px`,this.canvasWrapper.appendChild(o);const h=o.cloneNode();this.progressWrapper.appendChild(h),this.renderMultiCanvas(t,r,i,a,o,h)}render(e){return t(this,void 0,void 0,(function*(){var t;this.timeouts.forEach((t=>t())),this.timeouts=[],this.canvasWrapper.innerHTML="",this.progressWrapper.innerHTML="",null!=this.options.width&&(this.scrollContainer.style.width="number"==typeof this.options.width?`${this.options.width}px`:this.options.width);const i=this.getPixelRatio(),s=this.scrollContainer.clientWidth,n=Math.ceil(e.duration*(this.options.minPxPerSec||0));this.isScrollable=n>s;const r=this.options.fillParent&&!this.isScrollable,o=(r?s:n)*i;if(this.wrapper.style.width=r?"100%":`${n}px`,this.scrollContainer.style.overflowX=this.isScrollable?"auto":"hidden",this.scrollContainer.classList.toggle("noScrollbar",!!this.options.hideScrollbar),this.cursor.style.backgroundColor=`${this.options.cursorColor||this.options.progressColor}`,this.cursor.style.width=`${this.options.cursorWidth}px`,this.audioData=e,this.emit("render"),this.options.splitChannels)for(let i=0;i<e.numberOfChannels;i++){const s=Object.assign(Object.assign({},this.options),null===(t=this.options.splitChannels)||void 0===t?void 0:t[i]);this.renderChannel([e.getChannelData(i)],s,o,i)}else{const t=[e.getChannelData(0)];e.numberOfChannels>1&&t.push(e.getChannelData(1)),this.renderChannel(t,this.options,o,0)}Promise.resolve().then((()=>this.emit("rendered")))}))}reRender(){if(this.unsubscribeOnScroll.forEach((t=>t())),this.unsubscribeOnScroll=[],!this.audioData)return;const{scrollWidth:t}=this.scrollContainer,{right:e}=this.progressWrapper.getBoundingClientRect();if(this.render(this.audioData),this.isScrollable&&t!==this.scrollContainer.scrollWidth){const{right:t}=this.progressWrapper.getBoundingClientRect();let i=t-e;i*=2,i=i<0?Math.floor(i):Math.ceil(i),i/=2,this.scrollContainer.scrollLeft+=i}}zoom(t){this.options.minPxPerSec=t,this.reRender()}scrollIntoView(t,e=!1){const{scrollLeft:i,scrollWidth:s,clientWidth:n}=this.scrollContainer,r=t*s,o=i,a=i+n,h=n/2;if(this.isDragging){const t=30;r+t>a?this.scrollContainer.scrollLeft+=t:r-t<o&&(this.scrollContainer.scrollLeft-=t)}else{(r<o||r>a)&&(this.scrollContainer.scrollLeft=r-(this.options.autoCenter?h:0));const t=r-i-h;e&&this.options.autoCenter&&t>0&&(this.scrollContainer.scrollLeft+=Math.min(t,10))}{const t=this.scrollContainer.scrollLeft,e=t/s,i=(t+n)/s;this.emit("scroll",e,i,t,t+n)}}renderProgress(t,e){if(isNaN(t))return;const i=100*t;this.canvasWrapper.style.clipPath=`polygon(${i}% 0, 100% 0, 100% 100%, ${i}% 100%)`,this.progressWrapper.style.width=`${i}%`,this.cursor.style.left=`${i}%`,this.cursor.style.transform=`translateX(-${100===Math.round(i)?this.options.cursorWidth:0}px)`,this.isScrollable&&this.options.autoScroll&&this.scrollIntoView(t,e)}exportImage(e,i,s){return t(this,void 0,void 0,(function*(){const t=this.canvasWrapper.querySelectorAll("canvas");if(!t.length)throw new Error("No waveform data");if("dataURL"===s){const s=Array.from(t).map((t=>t.toDataURL(e,i)));return Promise.resolve(s)}return Promise.all(Array.from(t).map((t=>new Promise(((s,n)=>{t.toBlob((t=>{t?s(t):n(new Error("Could not export image"))}),e,i)})))))}))}}h.MAX_CANVAS_WIDTH=8e3,h.MAX_NODES=10;class l extends e{constructor(){super(...arguments),this.unsubscribe=()=>{}}start(){this.unsubscribe=this.on("tick",(()=>{requestAnimationFrame((()=>{this.emit("tick")}))})),this.emit("tick")}stop(){this.unsubscribe()}destroy(){this.unsubscribe()}}class d extends e{constructor(t=new AudioContext){super(),this.bufferNode=null,this.playStartTime=0,this.playedDuration=0,this._muted=!1,this._playbackRate=1,this._duration=void 0,this.buffer=null,this.currentSrc="",this.paused=!0,this.crossOrigin=null,this.seeking=!1,this.autoplay=!1,this.addEventListener=this.on,this.removeEventListener=this.un,this.audioContext=t,this.gainNode=this.audioContext.createGain(),this.gainNode.connect(this.audioContext.destination)}load(){return t(this,void 0,void 0,(function*(){}))}get src(){return this.currentSrc}set src(t){if(this.currentSrc=t,this._duration=void 0,!t)return this.buffer=null,void this.emit("emptied");fetch(t).then((e=>{if(e.status>=400)throw new Error(`Failed to fetch ${t}: ${e.status} (${e.statusText})`);return e.arrayBuffer()})).then((e=>this.currentSrc!==t?null:this.audioContext.decodeAudioData(e))).then((e=>{this.currentSrc===t&&(this.buffer=e,this.emit("loadedmetadata"),this.emit("canplay"),this.autoplay&&this.play())}))}_play(){var t;if(!this.paused)return;this.paused=!1,null===(t=this.bufferNode)||void 0===t||t.disconnect(),this.bufferNode=this.audioContext.createBufferSource(),this.buffer&&(this.bufferNode.buffer=this.buffer),this.bufferNode.playbackRate.value=this._playbackRate,this.bufferNode.connect(this.gainNode);let e=this.playedDuration*this._playbackRate;(e>=this.duration||e<0)&&(e=0,this.playedDuration=0),this.bufferNode.start(this.audioContext.currentTime,e),this.playStartTime=this.audioContext.currentTime,this.bufferNode.onended=()=>{this.currentTime>=this.duration&&(this.pause(),this.emit("ended"))}}_pause(){var t;this.paused=!0,null===(t=this.bufferNode)||void 0===t||t.stop(),this.playedDuration+=this.audioContext.currentTime-this.playStartTime}play(){return t(this,void 0,void 0,(function*(){this.paused&&(this._play(),this.emit("play"))}))}pause(){this.paused||(this._pause(),this.emit("pause"))}stopAt(t){const e=t-this.currentTime,i=this.bufferNode;null==i||i.stop(this.audioContext.currentTime+e),null==i||i.addEventListener("ended",(()=>{i===this.bufferNode&&(this.bufferNode=null,this.pause())}),{once:!0})}setSinkId(e){return t(this,void 0,void 0,(function*(){return this.audioContext.setSinkId(e)}))}get playbackRate(){return this._playbackRate}set playbackRate(t){this._playbackRate=t,this.bufferNode&&(this.bufferNode.playbackRate.value=t)}get currentTime(){return(this.paused?this.playedDuration:this.playedDuration+(this.audioContext.currentTime-this.playStartTime))*this._playbackRate}set currentTime(t){const e=!this.paused;e&&this._pause(),this.playedDuration=t/this._playbackRate,e&&this._play(),this.emit("seeking"),this.emit("timeupdate")}get duration(){var t,e;return null!==(t=this._duration)&&void 0!==t?t:(null===(e=this.buffer)||void 0===e?void 0:e.duration)||0}set duration(t){this._duration=t}get volume(){return this.gainNode.gain.value}set volume(t){this.gainNode.gain.value=t,this.emit("volumechange")}get muted(){return this._muted}set muted(t){this._muted!==t&&(this._muted=t,this._muted?this.gainNode.disconnect():this.gainNode.connect(this.audioContext.destination))}canPlayType(t){return/^(audio|video)\//.test(t)}getGainNode(){return this.gainNode}getChannelData(){const t=[];if(!this.buffer)return t;const e=this.buffer.numberOfChannels;for(let i=0;i<e;i++)t.push(this.buffer.getChannelData(i));return t}}const c={waveColor:"#999",progressColor:"#555",cursorWidth:1,minPxPerSec:0,fillParent:!0,interact:!0,dragToSeek:!1,autoScroll:!0,autoCenter:!0,sampleRate:8e3};class u extends a{static create(t){return new u(t)}constructor(t){const e=t.media||("WebAudio"===t.backend?new d:void 0);super({media:e,mediaControls:t.mediaControls,autoplay:t.autoplay,playbackRate:t.audioRate}),this.plugins=[],this.decodedData=null,this.stopAtPosition=null,this.subscriptions=[],this.mediaSubscriptions=[],this.abortController=null,this.options=Object.assign({},c,t),this.timer=new l;const i=e?void 0:this.getMediaElement();this.renderer=new h(this.options,i),this.initPlayerEvents(),this.initRendererEvents(),this.initTimerEvents(),this.initPlugins();const s=this.options.url||this.getSrc()||"";Promise.resolve().then((()=>{this.emit("init");const{peaks:t,duration:e}=this.options;(s||t&&e)&&this.load(s,t,e).catch((()=>null))}))}updateProgress(t=this.getCurrentTime()){return this.renderer.renderProgress(t/this.getDuration(),this.isPlaying()),t}initTimerEvents(){this.subscriptions.push(this.timer.on("tick",(()=>{if(!this.isSeeking()){const t=this.updateProgress();this.emit("timeupdate",t),this.emit("audioprocess",t),null!=this.stopAtPosition&&this.isPlaying()&&t>=this.stopAtPosition&&this.pause()}})))}initPlayerEvents(){this.isPlaying()&&(this.emit("play"),this.timer.start()),this.mediaSubscriptions.push(this.onMediaEvent("timeupdate",(()=>{const t=this.updateProgress();this.emit("timeupdate",t)})),this.onMediaEvent("play",(()=>{this.emit("play"),this.timer.start()})),this.onMediaEvent("pause",(()=>{this.emit("pause"),this.timer.stop(),this.stopAtPosition=null})),this.onMediaEvent("emptied",(()=>{this.timer.stop(),this.stopAtPosition=null})),this.onMediaEvent("ended",(()=>{this.emit("timeupdate",this.getDuration()),this.emit("finish"),this.stopAtPosition=null})),this.onMediaEvent("seeking",(()=>{this.emit("seeking",this.getCurrentTime())})),this.onMediaEvent("error",(()=>{var t;this.emit("error",null!==(t=this.getMediaElement().error)&&void 0!==t?t:new Error("Media error")),this.stopAtPosition=null})))}initRendererEvents(){this.subscriptions.push(this.renderer.on("click",((t,e)=>{this.options.interact&&(this.seekTo(t),this.emit("interaction",t*this.getDuration()),this.emit("click",t,e))})),this.renderer.on("dblclick",((t,e)=>{this.emit("dblclick",t,e)})),this.renderer.on("scroll",((t,e,i,s)=>{const n=this.getDuration();this.emit("scroll",t*n,e*n,i,s)})),this.renderer.on("render",(()=>{this.emit("redraw")})),this.renderer.on("rendered",(()=>{this.emit("redrawcomplete")})),this.renderer.on("dragstart",(t=>{this.emit("dragstart",t)})),this.renderer.on("dragend",(t=>{this.emit("dragend",t)})));{let t;this.subscriptions.push(this.renderer.on("drag",(e=>{if(!this.options.interact)return;let i;this.renderer.renderProgress(e),clearTimeout(t),this.isPlaying()?i=0:!0===this.options.dragToSeek?i=200:"object"==typeof this.options.dragToSeek&&void 0!==this.options.dragToSeek&&(i=this.options.dragToSeek.debounceTime),t=setTimeout((()=>{this.seekTo(e)}),i),this.emit("interaction",e*this.getDuration()),this.emit("drag",e)})))}}initPlugins(){var t;(null===(t=this.options.plugins)||void 0===t?void 0:t.length)&&this.options.plugins.forEach((t=>{this.registerPlugin(t)}))}unsubscribePlayerEvents(){this.mediaSubscriptions.forEach((t=>t())),this.mediaSubscriptions=[]}setOptions(t){this.options=Object.assign({},this.options,t),t.duration&&!t.peaks&&(this.decodedData=i.createBuffer(this.exportPeaks(),t.duration)),t.peaks&&t.duration&&(this.decodedData=i.createBuffer(t.peaks,t.duration)),this.renderer.setOptions(this.options),t.audioRate&&this.setPlaybackRate(t.audioRate),null!=t.mediaControls&&(this.getMediaElement().controls=t.mediaControls)}registerPlugin(t){return t._init(this),this.plugins.push(t),this.subscriptions.push(t.once("destroy",(()=>{this.plugins=this.plugins.filter((e=>e!==t))}))),t}getWrapper(){return this.renderer.getWrapper()}getWidth(){return this.renderer.getWidth()}getScroll(){return this.renderer.getScroll()}setScroll(t){return this.renderer.setScroll(t)}setScrollTime(t){const e=t/this.getDuration();this.renderer.setScrollPercentage(e)}getActivePlugins(){return this.plugins}loadAudio(e,s,n,r){return t(this,void 0,void 0,(function*(){var t;if(this.emit("load",e),!this.options.media&&this.isPlaying()&&this.pause(),this.decodedData=null,this.stopAtPosition=null,!s&&!n){const i=this.options.fetchParams||{};window.AbortController&&!i.signal&&(this.abortController=new AbortController,i.signal=null===(t=this.abortController)||void 0===t?void 0:t.signal);const n=t=>this.emit("loading",t);s=yield o.fetchBlob(e,n,i);const r=this.options.blobMimeType;r&&(s=new Blob([s],{type:r}))}this.setSrc(e,s);const a=yield new Promise((t=>{const e=r||this.getDuration();e?t(e):this.mediaSubscriptions.push(this.onMediaEvent("loadedmetadata",(()=>t(this.getDuration())),{once:!0}))}));if(!e&&!s){const t=this.getMediaElement();t instanceof d&&(t.duration=a)}if(n)this.decodedData=i.createBuffer(n,a||0);else if(s){const t=yield s.arrayBuffer();this.decodedData=yield i.decode(t,this.options.sampleRate)}this.decodedData&&(this.emit("decode",this.getDuration()),this.renderer.render(this.decodedData)),this.emit("ready",this.getDuration())}))}load(e,i,s){return t(this,void 0,void 0,(function*(){try{return yield this.loadAudio(e,void 0,i,s)}catch(t){throw this.emit("error",t),t}}))}loadBlob(e,i,s){return t(this,void 0,void 0,(function*(){try{return yield this.loadAudio("",e,i,s)}catch(t){throw this.emit("error",t),t}}))}zoom(t){if(!this.decodedData)throw new Error("No audio loaded");this.renderer.zoom(t),this.emit("zoom",t)}getDecodedData(){return this.decodedData}exportPeaks({channels:t=2,maxLength:e=8e3,precision:i=1e4}={}){if(!this.decodedData)throw new Error("The audio has not been decoded yet");const s=Math.min(t,this.decodedData.numberOfChannels),n=[];for(let t=0;t<s;t++){const s=this.decodedData.getChannelData(t),r=[],o=s.length/e;for(let t=0;t<e;t++){const e=s.slice(Math.floor(t*o),Math.ceil((t+1)*o));let n=0;for(let t=0;t<e.length;t++){const i=e[t];Math.abs(i)>Math.abs(n)&&(n=i)}r.push(Math.round(n*i)/i)}n.push(r)}return n}getDuration(){let t=super.getDuration()||0;return 0!==t&&t!==1/0||!this.decodedData||(t=this.decodedData.duration),t}toggleInteraction(t){this.options.interact=t}setTime(t){this.stopAtPosition=null,super.setTime(t),this.updateProgress(t),this.emit("timeupdate",t)}seekTo(t){const e=this.getDuration()*t;this.setTime(e)}play(e,i){const s=Object.create(null,{play:{get:()=>super.play}});return t(this,void 0,void 0,(function*(){null!=e&&this.setTime(e);const t=yield s.play.call(this);return null!=i&&(this.media instanceof d?this.media.stopAt(i):this.stopAtPosition=i),t}))}playPause(){return t(this,void 0,void 0,(function*(){return this.isPlaying()?this.pause():this.play()}))}stop(){this.pause(),this.setTime(0)}skip(t){this.setTime(this.getCurrentTime()+t)}empty(){this.load("",[[0]],.001)}setMediaElement(t){this.unsubscribePlayerEvents(),super.setMediaElement(t),this.initPlayerEvents()}exportImage(){return t(this,arguments,void 0,(function*(t="image/png",e=1,i="dataURL"){return this.renderer.exportImage(t,e,i)}))}destroy(){var t;this.emit("destroy"),null===(t=this.abortController)||void 0===t||t.abort(),this.plugins.forEach((t=>t.destroy())),this.subscriptions.forEach((t=>t())),this.unsubscribePlayerEvents(),this.timer.destroy(),this.renderer.destroy(),super.destroy()}}u.BasePlugin=class extends e{constructor(t){super(),this.subscriptions=[],this.options=t}onInit(){}_init(t){this.wavesurfer=t,this.onInit()}destroy(){this.emit("destroy"),this.subscriptions.forEach((t=>t()))}},u.dom=r;export{u as default};