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refactor(auto-thumbnail): [PKG-AUTO-THUMB-10] own JPEG encoding cancellation and deadlines

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Harvey Zhao committed 2026-09-14 11:55:05 +08:00
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docs/compiled/artplayer-plugin-auto-thumbnail.js
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* (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;if(r=void 0,i.onloadeddata=null,i.onseeked=null,!t)return;const n=e([()=>{null!==t.timer&&clearTimeout(t.timer)},()=>{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 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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 s=document.createElement("canvas");if(e.own(()=>{s.height=0}),e.own(()=>{s.width=0}),!e.active())return;if(s.width=d,!e.active())return;if(s.height=c,!e.active())return;const l=s.getContext("2d");if(!l)throw new Error("Auto-thumbnail canvas context is unavailable");if(!e.active())return;const f=t(e,n);let h=0;const m=e.guard(()=>{h>=i.number?e.dispose():f(r*h/i.number,e.guard(()=>{if(l.drawImage(n,h%10*i.width,Math.floor(h/10)*u,i.width,u),!e.active())return;let t=!1;s.toBlob(e.guard(n=>{t||(t=!0,e.publish(n,{height:u,column:10,number:i.number,width:i.width,scale:i.scale}),e.active()&&(h+=1,m()))}),"image/jpeg")}))});m()}),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 s=!1;const l={active:()=>!o&&!s&&n===l,own(t){if(s){const n=e([t]);n.failed&&i(n.failure)}else c.push(t)},dispose(){if(s)return;s=!0,n===l&&(n=void 0);const 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!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;if(r=void 0,i.onloadeddata=null,i.onseeked=null,!t)return;const n=e([()=>{null!==t.timer&&clearTimeout(t.timer)},()=>{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 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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)Line truncated
docs/compiled/artplayer-plugin-auto-thumbnail.legacy.js
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@@ -4,4 +4,4 @@
* (c) 2017-2026 Harvey Zhao
* Released under the MIT License.
*/
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!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";var e=Object.defineProperty,t=Object.getOwnPropertySymbols,n=Object.prototype.hasOwnProperty,r=Object.prototype.propertyIsEnumerable,i=(t,n,r)=>n in t?e(t,n,{enumerable:!0,configurable:!0,writable:!0,value:r}):t[n]=r;function o(e){let t,n=!1;for(const i of e)try{i()}catch(r){n||(n=!0,t=r)}return{failed:n,failure:t}}function a(e,a){let u,d,l=!1;const c=new Set;function s(e){void 0!==e&&c.delete(e)&&URL.revokeObjectURL(e)}function f(){const e=u;u=void 0,null==e||e.dispose()}return{start:function(){if(l)return;const f=u,h=[];let m=!1;const v={active:()=>!l&&!m&&u===v,own(e){if(m){const t=o([e]);t.failed&&a(t.failure)}else 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0,t.onloadeddata=null,t.onseeked=null,!e)return;const n=o([()=>{null!==e.timer&&clearTimeout(e.timer)},()=>{null!==e.frame&&t.cancelVideoFrameCallback(e.frame)}]);if(n.failed)throw n.failure}return e.own(i),(o,a)=>{if(i(),!e.active())return;const u={frame:null,timer:null,sought:!1,presented:!n,retries:0,sequence:0,started:!1};r=u;const d=()=>e.active()&&r===u,l=e.guard(()=>{d()&&u.sought&&u.presented&&(i(),e.active()&&a())}),c=()=>{u.sought=!1,(()=>{if(!n)return;const r=++u.sequence;u.presented=!1;const i=u.frame;if(u.frame=null,null!==i&&t.cancelVideoFrameCallback(i),!d())return;let o=!1;const a=t.requestVideoFrameCallback(e.guard(()=>{d()&&r===u.sequence&&!o&&(o=!0,u.frame=null,u.presented=!0,l())}));d()&&r===u.sequence&&!o?u.frame=a:t.cancelVideoFrameCallback(a)})(),d()&&(t.currentTime=o)},s=e.guard(()=>{d()&&!u.started&&(u.started=!0,t.onloadeddata=null,t.onseeked=e.guard(()=>{if(!d()||t.seeking)return;const e=t.currentTime;if(d())if(!Number.isFinite(e)||Math.abs(e-o)>.05){if(++u.retries>3)throw new Error("Auto-thumbnail seek did not reach the requested time");c()}else u.sought=!0,l()}),c())});if(u.timer=setTimeout(e.guard(()=>{if(d())throw new Error("Auto-thumbnail frame readiness timed out")}),3e4),!d())return void clearTimeout(u.timer);const f=!n||t.readyState>=2;d()&&(f?s():t.onloadeddata=s)}}function d(e,t){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 n of["onloadedmetadata","onloadeddata","onseeked","onerror"])e.own(()=>{t[n]=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,i=n.videoHeight,o=n.videoWidth,{height:a,canvasWidth:d,canvasHeight:l}=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 n=Math.floor(e.width*t.videoHeight/t.videoWidth),r=Math.trunc(10*e.width),i=Math.trunc(n*Math.ceil(e.number/10));if(![n,r,i].every(e=>Number.isSafeInteger(e)&&e>0&&e<=4294967295))throw new RangeError("Auto-thumbnail canvas dimensions are invalid");return{height:n,canvasWidth:r,canvasHeight:i}}(t,{duration:r,videoHeight:i,videoWidth:o});if(!e.active())return;n.width=o,n.height=i,n.style.width=`${o}px`,n.style.height=`${i}px`;const c=document.createElement("canvas");if(e.own(()=>{c.height=0}),e.own(()=>{c.width=0}),!e.active())return;if(c.width=d,!e.active())return;if(c.height=l,!e.active())retuLine truncated
docs/compiled/artplayer-plugin-auto-thumbnail.mjs
+37 -6
View File
@@ -4,6 +4,40 @@
* (c) 2017-2026 Harvey Zhao
* Released under the MIT License.
*/
function createEncoder(job, canvas) {
let pending;
function clear() {
const previous = pending;
pending = void 0;
if (previous && previous.timer !== null)
clearTimeout(previous.timer);
}
job.own(clear);
return (publish) => {
if (!job.active())
return;
if (pending)
throw new Error("Auto-thumbnail encoding is already pending");
const current = { timer: null };
pending = current;
const active = () => job.active() && pending === current;
current.timer = setTimeout(job.guard(() => {
if (active())
throw new Error("Auto-thumbnail encoding timed out");
}), 3e4);
if (!active()) {
clearTimeout(current.timer);
return;
}
canvas.toBlob(job.guard((blob) => {
if (!active())
return;
clear();
if (job.active())
publish(blob);
}), "image/jpeg");
};
}
function cleanupAll(actions) {
let failure;
let failed = false;
@@ -321,6 +355,7 @@ function extract(job, config) {
if (!job.active())
return;
const readFrame = createFrameReader(job, video);
const encode = createEncoder(job, canvas);
let index = 0;
const seek = job.guard(() => {
if (index >= config.number) {
@@ -331,17 +366,13 @@ function extract(job, config) {
ctx.drawImage(video, index % 10 * config.width, Math.floor(index / 10) * height, config.width, height);
if (!job.active())
return;
let delivered = false;
canvas.toBlob(job.guard((blob) => {
if (delivered)
return;
delivered = true;
encode((blob) => {
job.publish(blob, { height, column: 10, number: config.number, width: config.width, scale: config.scale });
if (job.active()) {
index += 1;
seek();
}
}), "image/jpeg");
});
}));
});
seek();