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,t){const i=document.createElement("video");e.own(()=>i.load()),e.own(()=>i.removeAttribute("src")),e.own(()=>i.pause());for(const n of["onloadedmetadata","onseeked","onerror"])e.own(()=>{i[n]=null});e.active()&&(i.crossOrigin="anonymous",i.onerror=e.guard(()=>{throw i.error||new Error("Auto-thumbnail media failed to load")}),i.onloadedmetadata=e.guard(()=>{i.onloadedmetadata=null;const n=i.duration,{height:r,canvasWidth:o,canvasHeight:a}=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}}(t,{duration:n,videoHeight:i.videoHeight,videoWidth:i.videoWidth});if(!e.active())return;const u=document.createElement("canvas");if(!e.active())return;u.width=o,u.height=a;const d=u.getContext("2d");if(!d)throw new Error("Auto-thumbnail canvas context is unavailable");if(!e.active())return;let c=0;const s=e.guard(()=>{c>=t.number?e.dispose():(i.onseeked=e.guard(()=>{if(i.onseeked=null,d.drawImage(i,c%10*t.width,Math.floor(c/10)*r,t.width,r),!e.active())return;let n=!1;u.toBlob(e.guard(i=>{n||(n=!0,e.publish(i,{height:r,column:10,number:t.number,width:t.width,scale:t.scale}),e.active()&&(c+=1,s()))}),"image/jpeg")}),e.active()&&(i.currentTime=n*c/t.number))});s()}),e.active()&&(i.src=t.url))}function t(e){let t,i=!1;for(const r of e)try{r()}catch(n){i||(i=!0,t=n)}return{failed:i,failure:t}}return function(i){return async n=>{const r=e=>console.warn("ArtPlayer auto-thumbnail failed:",e),o=function(e,i){let n,r,o=!1;const a=new Set;function u(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 s=!1;const l={active:()=>!o&&!s&&n===l,own(e){if(s){const n=t([e]);n.failed&&i(n.failure)}else c.push(e)},dispose(){if(s)return;s=!0,n===l&&(n=void 0);const e=t(c.splice(0).reverse());e.failed&&i(e.failure)},fail(e){l.active()&&(l.dispose(),i(e))},guard:e=>(...t)=>{if(l.active())try{return e(...t)}catch(i){l.fail(i)}},publish(n,o){if(!l.active())return;if(!n)throw new Error("Auto-thumbnail encoding returned no Blob");const d=URL.createObjectURL(n);if(a.add(d),!l.active())return void u(d);const c=r;r=d;try{e({url:d,...o})}catch(s){r===d&&(r=a.has(c)?c:void 0);const e=t([()=>u(d)]);throw e.failed&&i(e.failure),s}u(c)}};return n=l,d?.dispose(),l},cancel:d,destroy:function(){if(o)return;o=!0;const e=t([d,...[...a].map(e=>()=>u(e))]);r=void 0,e.failed&&i(e.failure)},get closed(){return o}}}(e=>{n.thumbnails=e},r),a=[],u=()=>{const t=o.start();t&&t.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}(i,()=>n.option.url);t.active()&&e(t,r)})()},d=()=>{const e=a.splice(0),i=t([o.destroy,...e]);i.failed&&r(i.failure)};try{for(const[e,t]of[["destroy",d],["restart",o.cancel],["video:loadedmetadata",u]]){if(o.closed)break;a.push(()=>n.off(e,t)),n.on(e,t),o.closed&&n.off(e,t)}}catch(c){throw d(),c}return{name:"artplayerPluginAutoThumbnail"}}}});