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fix(danmuku): [PKG-DANMUKU-START-01] retain the initial playback sampling interval

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Harvey Zhao committed 2026-09-16 00:14:48 +08:00
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commit 267b21226a
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packages/artplayer-plugin-danmuku/ARCHITECTURE.md
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@@ -196,7 +196,16 @@ existing track algorithm and geometry fields until separately reviewed.
RAF sampling and visible lifetime maintenance continue while `beforeVisible` or
the Worker is pending. Public `readys` remains the instantaneous +/- 0.1 second
query. The sampling window also recovers rows crossed between consecutive
query. A playing, visible scheduler seeds its first observation before requesting
RAF, so a delayed first callback cannot discard the initial playback interval.
This records time and existing waiting identities only; it never calls the public
readys getter or dispatches beforeVisible/visible outside RAF. Repeated play/playing
or start calls retain that anchor until a lifecycle boundary clears it. Native
unpaused, non-ended media with current data can seed time zero even though the
unchanged public playing getter requires currentTime > 0. Dispatch still waits
for the existing playing condition; paused, hidden and seeking periods do not
become catch-up intervals.
The sampling window also recovers rows crossed between consecutive
forward media samples, but only if they were already waiting at the earlier
sample and were not already selected there. It does not replay newly appended
past rows or retry a false callback merely because time crossed that row.
packages/artplayer-plugin-danmuku/dist/artplayer-plugin-danmuku.js
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+1 -1
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@@ -4,4 +4,4 @@
* (c) 2017-2026 Harvey Zhao
* Released under the MIT License.
*/
!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";function t(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function e(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function i(t){if("string"!==typeof t)return[];const i=t.matchAll(/<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\/d>/gs);return Array.from(i).map(t=>{const i=t.groups.p.split(",");if(i.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(i[0]),mode:e(Number(i[1])),fontSize:Number(i[2]),color:`#${Number(i[3]).toString(16)}`,timestamp:Number(i[4]),pool:Number(i[5]),userID:i[6],rowID:Number(i[7])}}return null}).filter(Boolean)}function n({data:t}){const{xml:e,id:n}=t,s=i(e);globalThis.postMessage({danmus:s,id:n})}let s=0;function a(t,{signal:a,onCancel:r}={}){return new Promise((o,l)=>{let d,h,c,p=!1;const u=++s,m=()=>g(void 0,function(t){if(void 0!==t?.reason)return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(a));function f(){let t,e=!1;try{if(d){const t=d;d=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==h){const n=h;h=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function g(t,e){if(p)return;p=!0;let i=arguments.length>1;a?.removeEventListener("abort",m),c?.();try{f()}catch(n){i||(e=n),i=!0}i?l(e):o(t)}function y(t,e){if(!p){console.error("Error parsing Bilibili Danmu:",e);try{g(i(t))}catch(n){g(void 0,n)}}}a?.aborted?m():(a?.addEventListener("abort",m),c=r?.(m),p?c?.():async function(){const s=a?await fetch(t,{signal:a}):await fetch(t);if(p)return;const r=await s.text();if(!p)try{const t=`\n ${e.toString()}\n ${i.toString()}\n onmessage = ${n.toString()}\n `;if(h=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),p)return void f();if(d=new Worker(h),p)return void f();d.onmessage=t=>{if(p||t.data?.id!==u)return;const{danmus:e}=t.data;Array.isArray(e)?g(e):g(void 0,new Error("Invalid Bilibili Danmu worker response"))},d.onerror=t=>{t.preventDefault?.(),y(r,t.error||t)},d.onmessageerror=t=>y(r,t.error||t),d.postMessage({xml:r,id:u})}catch(o){y(r,o)}}().catch(t=>g(void 0,t)))})}const r=new WeakMap,o=Symbol("cancelled danmuku input");function l(t){return r.has(t)||r.set(t,{closed:!1,tasks:new Set,emitting:[]}),r.get(t)}function d(t){const e=l(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function h(t){const e=l(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function c(t,e,i){const n=t.states[e]||[];for(let s=0;s<n.length;s++)i(n[s]);return n}class p{constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const s=n.$ref.offsetTop,a=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=a+o,d=e-l,h=l/n.$restTime,c={};c.top=s,c.left=a,c.height=r,c.width=o,c.right=d,c.speed=h,c.distance=l,c.time=n.$restTime,c.mode=n.mode,t.push(c)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emit",e=>{switch(e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.left=`${t}px`,e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}})}continue(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("stop",e=>{switch(this.owner.setState(e,"emit"),e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}}),this}suspend(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("emit",e=>{switch(this.owner.setState(e,"stop"),e.mode){case 0:{const i=t-(this.owner.getLeft(e.$ref)-this.owner.getLeft(this.owner.$player));e.$ref.style.transform=`translLine truncated
!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";function t(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function e(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function i(t){if("string"!==typeof t)return[];const i=t.matchAll(/<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\/d>/gs);return Array.from(i).map(t=>{const i=t.groups.p.split(",");if(i.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(i[0]),mode:e(Number(i[1])),fontSize:Number(i[2]),color:`#${Number(i[3]).toString(16)}`,timestamp:Number(i[4]),pool:Number(i[5]),userID:i[6],rowID:Number(i[7])}}return null}).filter(Boolean)}function n({data:t}){const{xml:e,id:n}=t,s=i(e);globalThis.postMessage({danmus:s,id:n})}let s=0;function a(t,{signal:a,onCancel:r}={}){return new Promise((o,l)=>{let d,h,c,p=!1;const u=++s,m=()=>g(void 0,function(t){if(void 0!==t?.reason)return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(a));function f(){let t,e=!1;try{if(d){const t=d;d=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==h){const n=h;h=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function g(t,e){if(p)return;p=!0;let i=arguments.length>1;a?.removeEventListener("abort",m),c?.();try{f()}catch(n){i||(e=n),i=!0}i?l(e):o(t)}function y(t,e){if(!p){console.error("Error parsing Bilibili Danmu:",e);try{g(i(t))}catch(n){g(void 0,n)}}}a?.aborted?m():(a?.addEventListener("abort",m),c=r?.(m),p?c?.():async function(){const s=a?await fetch(t,{signal:a}):await fetch(t);if(p)return;const r=await s.text();if(!p)try{const t=`\n ${e.toString()}\n ${i.toString()}\n onmessage = ${n.toString()}\n `;if(h=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),p)return void f();if(d=new Worker(h),p)return void f();d.onmessage=t=>{if(p||t.data?.id!==u)return;const{danmus:e}=t.data;Array.isArray(e)?g(e):g(void 0,new Error("Invalid Bilibili Danmu worker response"))},d.onerror=t=>{t.preventDefault?.(),y(r,t.error||t)},d.onmessageerror=t=>y(r,t.error||t),d.postMessage({xml:r,id:u})}catch(o){y(r,o)}}().catch(t=>g(void 0,t)))})}const r=new WeakMap,o=Symbol("cancelled danmuku input");function l(t){return r.has(t)||r.set(t,{closed:!1,tasks:new Set,emitting:[]}),r.get(t)}function d(t){const e=l(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function h(t){const e=l(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function c(t,e,i){const n=t.states[e]||[];for(let s=0;s<n.length;s++)i(n[s]);return n}class p{constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const s=n.$ref.offsetTop,a=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=a+o,d=e-l,h=l/n.$restTime,c={};c.top=s,c.left=a,c.height=r,c.width=o,c.right=d,c.speed=h,c.distance=l,c.time=n.$restTime,c.mode=n.mode,t.push(c)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emit",e=>{switch(e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.left=`${t}px`,e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}})}continue(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("stop",e=>{switch(this.owner.setState(e,"emit"),e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}}),this}suspend(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("emit",e=>{switch(this.owner.setState(e,"stop"),e.mode){case 0:{const i=t-(this.owner.getLeft(e.$ref)-this.owner.getLeft(this.owner.$player));e.$ref.style.transform=`translLine truncated
packages/artplayer-plugin-danmuku/dist/artplayer-plugin-danmuku.legacy.js
Vendored
+1 -1
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@@ -4,4 +4,4 @@
* (c) 2017-2026 Harvey Zhao
* Released under the MIT License.
*/
!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";var t=Object.defineProperty,e=Object.defineProperties,i=Object.getOwnPropertyDescriptors,n=Object.getOwnPropertySymbols,s=Object.prototype.hasOwnProperty,a=Object.prototype.propertyIsEnumerable,r=Math.pow,o=(e,i,n)=>i in e?t(e,i,{enumerable:!0,configurable:!0,writable:!0,value:n}):e[i]=n,l=(t,e)=>{for(var i in e||(e={}))s.call(e,i)&&o(t,i,e[i]);if(n)for(var i of n(e))a.call(e,i)&&o(t,i,e[i]);return t},d=(t,n)=>e(t,i(n)),h=(t,e,i)=>new Promise((n,s)=>{var a=t=>{try{o(i.next(t))}catch(e){s(e)}},r=t=>{try{o(i.throw(t))}catch(e){s(e)}},o=t=>t.done?n(t.value):Promise.resolve(t.value).then(a,r);o((i=i.apply(t,e)).next())});function c(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function p(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function u(t){if("string"!==typeof t)return[];const e=new RegExp('<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\\/d>',"gs"),i=t.matchAll(e);return Array.from(i).map(t=>{const e=t.groups.p.split(",");if(e.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(e[0]),mode:p(Number(e[1])),fontSize:Number(e[2]),color:`#${Number(e[3]).toString(16)}`,timestamp:Number(e[4]),pool:Number(e[5]),userID:e[6],rowID:Number(e[7])}}return null}).filter(Boolean)}function m({data:t}){const{xml:e,id:i}=t,n=u(e);globalThis.postMessage({danmus:n,id:i})}let f=0;function g(t,{signal:e,onCancel:i}={}){return new Promise((n,s)=>{let a,r,o,l=!1;const d=++f,c=()=>y(void 0,function(t){if(void 0!==(null==t?void 0:t.reason))return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(e));function g(){let t,e=!1;try{if(a){const t=a;a=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==r){const n=r;r=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function y(t,i){if(l)return;l=!0;let a=arguments.length>1;null==e||e.removeEventListener("abort",c),null==o||o();try{g()}catch(r){a||(i=r),a=!0}a?s(i):n(t)}function v(t,e){if(!l){console.error("Error parsing Bilibili Danmu:",e);try{y(u(t))}catch(i){y(void 0,i)}}}(null==e?void 0:e.aborted)?c():(null==e||e.addEventListener("abort",c),o=null==i?void 0:i(c),l?null==o||o():function(){return h(this,null,function*(){const i=e?yield fetch(t,{signal:e}):yield fetch(t);if(l)return;const n=yield i.text();if(!l)try{const t=`\n ${p.toString()}\n ${u.toString()}\n onmessage = ${m.toString()}\n `;if(r=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),l)return void g();if(a=new Worker(r),l)return void g();a.onmessage=t=>{var e;if(l||(null==(e=t.data)?void 0:e.id)!==d)return;const{danmus:i}=t.data;Array.isArray(i)?y(i):y(void 0,new Error("Invalid Bilibili Danmu worker response"))},a.onerror=t=>{var e;null==(e=t.preventDefault)||e.call(t),v(n,t.error||t)},a.onmessageerror=t=>v(n,t.error||t),a.postMessage({xml:n,id:d})}catch(s){v(n,s)}})}().catch(t=>y(void 0,t)))})}const y=new WeakMap,v=Symbol("cancelled danmuku input");function w(t){return y.has(t)||y.set(t,{closed:!1,tasks:new Set,emitting:[]}),y.get(t)}function k(t){const e=w(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function x(t){const e=w(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function b(t,e,i){const n=t.states[e]||[];for(let s=0;s<n.length;s++)i(n[s]);return n}class ${constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const s=n.$ref.offsetTop,a=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=a+o,d=e-l,h=l/n.$restTime,c={};c.top=s,c.left=a,c.height=r,c.width=o,c.right=d,c.speed=h,c.distance=l,c.time=n.$restTime,c.mode=n.mode,t.push(c)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emitLine truncated
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packages/artplayer-plugin-danmuku/dist/artplayer-plugin-danmuku.mjs
Vendored
+16 -1
View File
@@ -652,6 +652,10 @@ class SamplingWindow {
this.waiting = /* @__PURE__ */ new Set();
this.visibility = () => this.clear();
}
begin(owner) {
if (this.time === void 0)
this.capture(owner, [], owner.art.currentTime);
}
capture(owner, rows, time) {
const doc = owner.$player.ownerDocument;
if (doc !== this.document) {
@@ -789,7 +793,18 @@ class Scheduler {
}
schedule() {
const owner = this.owner;
if (!this.running || this.closed || this.fault || owner.art.isDestroy || owner.isStop || this.frame !== null)
if (!this.running || this.closed || this.fault || owner.art.isDestroy || owner.isStop)
return;
try {
const video = owner.art.video;
const started = owner.art.playing || video?.paused === false && !video.ended && video.readyState > 2;
if (started && !owner.isHide)
this.sampling.begin(owner);
} catch (error) {
this.fail(error);
return;
}
if (this.frame !== null)
return;
this.frame = window.requestAnimationFrame(() => {
this.frame = null;
packages/artplayer-plugin-danmuku/src/sampling-window.ts
+5
View File
@@ -9,6 +9,11 @@ export default class SamplingWindow {
private document: Document | undefined
private visibility = () => this.clear()
begin(owner: Danmuku) {
if (this.time === undefined)
this.capture(owner, [], owner.art.currentTime)
}
capture(owner: Danmuku, rows: DanmuItem[], time: number) {
const doc = owner.$player.ownerDocument
if (doc !== this.document) {
packages/artplayer-plugin-danmuku/src/scheduler.ts
+14 -1
View File
@@ -105,7 +105,20 @@ export default class Scheduler {
schedule() {
const owner = this.owner
if (!this.running || this.closed || this.fault || owner.art.isDestroy || owner.isStop || this.frame !== null)
if (!this.running || this.closed || this.fault || owner.art.isDestroy || owner.isStop)
return
try {
// The public playing getter requires currentTime > 0; native play can start at zero.
const video = owner.art.video
const started = owner.art.playing || (video?.paused === false && !video.ended && video.readyState > 2)
if (started && !owner.isHide)
this.sampling.begin(owner)
}
catch (error) {
this.fail(error)
return
}
if (this.frame !== null)
return
this.frame = window.requestAnimationFrame(() => {
this.frame = null