ArtPlayer/docs/compiled/artplayer-plugin-auto-thumbnail.js

/*!
 * artplayer-plugin-auto-thumbnail.js v1.1.0
 * Github: https://github.com/zhw2590582/ArtPlayer
 * (c) 2017-2026 Harvey Zhao
 * Released under the MIT License.
 */
!function(e,t){"object"===typeof exports&&"undefined"!==typeof module?module.exports=t():"function"==typeof define&&define.amd?(e.artplayerPluginAutoThumbnail=t(),define(function(){return e.artplayerPluginAutoThumbnail})):(e="undefined"!==typeof globalThis?globalThis:e||self).artplayerPluginAutoThumbnail=t()}(this,function(){"use strict";function e(e){let t,i=!1;for(const r of e)try{r()}catch(n){i||(i=!0,t=n)}return{failed:i,failure:t}}function t(t,i){const n="function"===typeof i.requestVideoFrameCallback&&"function"===typeof i.cancelVideoFrameCallback;let r;function o(){const t=r;r=void 0;const n=e([()=>{i.onloadeddata=null},()=>{i.onseeked=null},()=>{t&&null!==t.timer&&clearTimeout(t.timer)},()=>{t&&null!==t.frame&&i.cancelVideoFrameCallback(t.frame)}]);if(n.failed)throw n.failure}return t.own(o),(e,a)=>{if(o(),!t.active())return;const u={frame:null,timer:null,sought:!1,presented:!n,retries:0,sequence:0,started:!1};r=u;const d=()=>t.active()&&r===u,c=t.guard(()=>{d()&&u.sought&&u.presented&&(o(),t.active()&&a())}),l=()=>{u.sought=!1,(()=>{if(!n)return;const e=++u.sequence;u.presented=!1;const r=u.frame;if(u.frame=null,null!==r&&i.cancelVideoFrameCallback(r),!d())return;let o=!1;const a=i.requestVideoFrameCallback(t.guard(()=>{d()&&e===u.sequence&&!o&&(o=!0,u.frame=null,u.presented=!0,c())}));d()&&e===u.sequence&&!o?u.frame=a:i.cancelVideoFrameCallback(a)})(),d()&&(i.currentTime=e)},s=t.guard(()=>{d()&&!u.started&&(u.started=!0,i.onloadeddata=null,i.onseeked=t.guard(()=>{if(!d()||i.seeking)return;const t=i.currentTime;if(d())if(!Number.isFinite(t)||Math.abs(t-e)>.05){if(++u.retries>3)throw new Error("Auto-thumbnail seek did not reach the requested time");l()}else u.sought=!0,c()}),l())});if(u.timer=setTimeout(t.guard(()=>{if(d())throw new Error("Auto-thumbnail frame readiness timed out")}),3e4),!d())return void clearTimeout(u.timer);const f=!n||i.readyState>=2;d()&&(f?s():i.onloadeddata=s)}}function i(e,i){const n=function(e){const t=document.createElement("video");e.own(()=>t.remove()),e.own(()=>t.load()),e.own(()=>t.removeAttribute("src")),e.own(()=>t.pause());for(const i of["onloadedmetadata","onloadeddata","onseeked","onerror"])e.own(()=>{t[i]=null});return e.active()?(t.crossOrigin="anonymous",t.muted=!0,t.playsInline=!0,t.tabIndex=-1,t.setAttribute("aria-hidden","true"),t.style.cssText="position:fixed;left:0;top:0;visibility:hidden;pointer-events:none;display:block;width:auto;height:auto;max-width:none;max-height:none",document.documentElement.appendChild(t),e.active()||t.remove(),t):t}(e);e.active()&&(n.onerror=e.guard(()=>{throw n.error||new Error("Auto-thumbnail media failed to load")}),n.onloadedmetadata=e.guard(()=>{n.onloadedmetadata=null;const r=n.duration,o=n.videoHeight,a=n.videoWidth,{height:u,canvasWidth:d,canvasHeight:c}=function(e,t){if(!Number.isFinite(t.duration)||t.duration<=0||!Number.isFinite(t.videoWidth)||t.videoWidth<=0||!Number.isFinite(t.videoHeight)||t.videoHeight<=0)throw new TypeError("Auto-thumbnail requires finite media duration and dimensions");const i=Math.floor(e.width*t.videoHeight/t.videoWidth),n=Math.trunc(10*e.width),r=Math.trunc(i*Math.ceil(e.number/10));if(![i,n,r].every(e=>Number.isSafeInteger(e)&&e>0&&e<=4294967295))throw new RangeError("Auto-thumbnail canvas dimensions are invalid");return{height:i,canvasWidth:n,canvasHeight:r}}(i,{duration:r,videoHeight:o,videoWidth:a});if(!e.active())return;n.width=a,n.height=o,n.style.width=`${a}px`,n.style.height=`${o}px`;const l=document.createElement("canvas");if(e.own(()=>{l.height=0}),e.own(()=>{l.width=0}),!e.active())return;if(l.width=d,!e.active())return;if(l.height=c,!e.active())return;const s=l.getContext("2d");if(!s)throw new Error("Auto-thumbnail canvas context is unavailable");if(!e.active())return;const f=t(e,n),h=function(e,t){let i;function n(){const e=i;i=void 0,e&&null!==e.timer&&clearTimeout(e.timer)}return e.own(n),r=>{if(!e.active())return;if(i)throw new Error("Auto-thumbnail encoding is already pending");const o={timer:null};i=o;const a=()=>e.active()&&i===o;o.timer=setTimeout(e.guard(()=>{if(a())throw new Error("Auto-thumbnail encoding timed out")}),3e4),a()?t.toBlob(e.guard(t=>{a()&&(n(),e.active()&&r(t))}),"image/jpeg"):clearTimeout(o.timer)}}(e,l);let m=0;const v=e.guard(()=>{m>=i.number?e.dispose():f(r*m/i.number,e.guard(()=>{s.drawImage(n,m%10*i.width,Math.floor(m/10)*u,i.width,u),e.active()&&h(t=>{e.publish(t,{height:u,column:10,number:i.number,width:i.width,scale:i.scale}),e.active()&&(m+=1,v())})}))});v()}),e.active()&&(n.src=i.url))}function n(t){return async n=>{const r=e=>console.warn("ArtPlayer auto-thumbnail failed:",e),o=function(t,i){let n,r,o=!1;const a=new Set;function u(e){void 0!==e&&a.delete(e)&&URL.revokeObjectURL(e)}function d(){const e=n;n=void 0,e?.dispose()}return{start:function(){if(o)return;const d=n,c=[];let l=!1;const s={active:()=>!o&&!l&&n===s,own(t){if(l){const n=e([t]);n.failed&&i(n.failure)}else c.push(t)},dispose(){if(l)return;l=!0,n===s&&(n=void 0);const t=e(c.splice(0).reverse());t.failed&&i(t.failure)},fail(e){s.active()&&(s.dispose(),i(e))},guard:e=>(...t)=>{if(s.active())try{return e(...t)}catch(i){s.fail(i)}},publish(n,o){if(!s.active())return;if(!n)throw new Error("Auto-thumbnail encoding returned no Blob");const d=URL.createObjectURL(n);if(a.add(d),!s.active())return void u(d);const c=r;r=d;try{t({url:d,...o})}catch(l){r===d&&(r=void 0!==c&&a.has(c)?c:void 0);const t=e([()=>u(d)]);throw t.failed&&i(t.failure),l}u(c)}};return n=s,d?.dispose(),s},cancel:d,destroy:function(){if(o)return;o=!0;const t=e([d,...[...a].map(e=>()=>u(e))]);r=void 0,t.failed&&i(t.failure)},get closed(){return o}}}(e=>{n.thumbnails=e},r),a=[],u=()=>{const e=o.start();e&&e.guard(()=>{const r=function(e,t){const i={url:e.url||t(),width:e.width||160,number:e.number||100,scale:e.scale||1};if(!Number.isFinite(Number(i.width))||i.width<=0||!Number.isFinite(Number(i.number))||i.number<=0)throw new TypeError("Auto-thumbnail width and number must be finite positive numbers");return i}(t,()=>n.option.url);e.active()&&i(e,r)})()},d=()=>{const t=a.splice(0),i=e([o.destroy,...t]);i.failed&&r(i.failure)};try{const e=[["destroy",d],["restart",o.cancel],["video:loadedmetadata",u]];for(const[t,i]of e){if(o.closed)break;a.push(()=>n.off(t,i)),n.on(t,i),o.closed&&n.off(t,i)}}catch(c){throw d(),c}return{name:"artplayerPluginAutoThumbnail"}}}return n.default=n,n});