2 lines
12 KiB
JavaScript
2 lines
12 KiB
JavaScript
import{ax as G,aC as S,bz as V}from"./index-b5c8f851.js";var R,T,k={exports:{}};k.exports,R=k,k.exports,T=function(){return function(b){var l={};function s(a){if(l[a])return l[a].exports;var h=l[a]={exports:{},id:a,loaded:!1};return b[a].call(h.exports,h,h.exports,s),h.loaded=!0,h.exports}return s.m=b,s.c=l,s.p="",s(0)}([function(b,l,s){Object.defineProperty(l,"__esModule",{value:!0}),l.isNotPNG=n,l.isNotAPNG=r,l.default=t;var a=p(s(1)),h=s(2);function p(u){return u&&u.__esModule?u:{default:u}}var y=new Error("Not a PNG"),e=new Error("Not an animated PNG");function n(u){return u===y}function r(u){return u===e}var i=new Uint8Array([137,80,78,71,13,10,26,10]);function t(u){var g=new Uint8Array(u);if(Array.prototype.some.call(i,function(L,w){return L!==g[w]}))return y;var _=!1;if(o(g,function(L){return!(_=L==="acTL")}),!_)return e;var d=[],O=[],x=null,c=null,I=0,P=new h.APNG;if(o(g,function(L,w,f,U){var F=new DataView(w.buffer);switch(L){case"IHDR":x=w.subarray(f+8,f+8+U),P.width=F.getUint32(f+8),P.height=F.getUint32(f+12);break;case"acTL":P.numPlays=F.getUint32(f+8+4);break;case"fcTL":c&&(P.frames.push(c),I++),(c=new h.Frame).width=F.getUint32(f+8+4),c.height=F.getUint32(f+8+8),c.left=F.getUint32(f+8+12),c.top=F.getUint32(f+8+16);var M=F.getUint16(f+8+20),N=F.getUint16(f+8+22);N===0&&(N=100),c.delay=1e3*M/N,c.delay<=10&&(c.delay=100),P.playTime+=c.delay,c.disposeOp=F.getUint8(f+8+24),c.blendOp=F.getUint8(f+8+25),c.dataParts=[],I===0&&c.disposeOp===2&&(c.disposeOp=1);break;case"fdAT":c&&c.dataParts.push(w.subarray(f+8+4,f+8+U));break;case"IDAT":c&&c.dataParts.push(w.subarray(f+8,f+8+U));break;case"IEND":O.push(E(w,f,12+U));break;default:d.push(E(w,f,12+U))}}),c&&P.frames.push(c),P.frames.length==0)return e;var j=new Blob(d),C=new Blob(O);return P.frames.forEach(function(L){var w=[];w.push(i),x.set(D(L.width),0),x.set(D(L.height),4),w.push(A("IHDR",x)),w.push(j),L.dataParts.forEach(function(f){return w.push(A("IDAT",f))}),w.push(C),L.imageData=new Blob(w,{type:"image/png"}),delete L.dataParts,w=null}),P}function o(u,g){var _=new DataView(u.buffer),d=8,O=void 0,x=void 0,c=void 0;do x=_.getUint32(d),c=g(O=v(u,d+4,4),u,d,x),d+=12+x;while(c!==!1&&O!="IEND"&&d<u.length)}function v(u,g,_){var d=Array.prototype.slice.call(u.subarray(g,g+_));return String.fromCharCode.apply(String,d)}function m(u){for(var g=new Uint8Array(u.length),_=0;_<u.length;_++)g[_]=u.charCodeAt(_);return g}function E(u,g,_){var d=new Uint8Array(_);return d.set(u.subarray(g,g+_)),d}var A=function(u,g){var _=u.length+g.length,d=new Uint8Array(_+8),O=new DataView(d.buffer);O.setUint32(0,g.length),d.set(m(u),4),d.set(g,8);var x=(0,a.default)(d,4,_);return O.setUint32(_+4,x),d},D=function(u){return new Uint8Array([u>>>24&255,u>>>16&255,u>>>8&255,255&u])}},function(b,l){Object.defineProperty(l,"__esModule",{value:!0}),l.default=function(y){for(var e=arguments.length>1&&arguments[1]!==void 0?arguments[1]:0,n=-1,r=e,i=e+(arguments.length>2&&arguments[2]!==void 0?arguments[2]:y.length-e);r<i;r++)n=n>>>8^s[255&(n^y[r])];return-1^n};for(var s=new Uint32Array(256),a=0;a<256;a++){for(var h=a,p=0;p<8;p++)h=1&h?3988292384^h>>>1:h>>>1;s[a]=h}},function(b,l,s){Object.defineProperty(l,"__esModule",{value:!0}),l.Frame=l.APNG=void 0;var a=function(){function e(n,r){for(var i=0;i<r.length;i++){var t=r[i];t.enumerable=t.enumerable||!1,t.configurable=!0,"value"in t&&(t.writable=!0),Object.defineProperty(n,t.key,t)}}return function(n,r,i){return r&&e(n.prototype,r),i&&e(n,i),n}}(),h=p(s(3));function p(e){return e&&e.__esModule?e:{default:e}}function y(e,n){if(!(e instanceof n))throw new TypeError("Cannot call a class as a function")}l.APNG=function(){function e(){y(this,e),this.width=0,this.height=0,this.numPlays=0,this.playTime=0,this.frames=[]}return a(e,[{key:"createImages",value:function(){return Promise.all(this.frames.map(function(n){return n.createImage()}))}},{key:"getPlayer",value:function(n){var r=this,i=arguments.length>1&&arguments[1]!==void 0&&arguments[1];return this.createImages().then(function(){return new h.default(r,n,i)})}}]),e}(),l.Frame=function(){function e(){y(this,e),this.left=0,this.top=0,this.width=0,this.height=0,this.delay=0,this.disposeOp=0,this.blendOp=0,this.imageData=null,this.imageElement=null}return a(e,[{key:"createImage",value:function(){var n=this;return this.imageElement?Promise.resolve():new Promise(function(r,i){var t=URL.createObjectURL(n.imageData);n.imageElement=document.createElement("img"),n.imageElement.onload=function(){URL.revokeObjectURL(t),r()},n.imageElement.onerror=function(){URL.revokeObjectURL(t),n.imageElement=null,i(new Error("Image creation error"))},n.imageElement.src=t})}}]),e}()},function(b,l,s){Object.defineProperty(l,"__esModule",{value:!0});var a=function(){function r(i,t){for(var o=0;o<t.length;o++){var v=t[o];v.enumerable=v.enumerable||!1,v.configurable=!0,"value"in v&&(v.writable=!0),Object.defineProperty(i,v.key,v)}}return function(i,t,o){return t&&r(i.prototype,t),o&&r(i,o),i}}();function h(r){return r&&r.__esModule?r:{default:r}}function p(r,i){if(!(r instanceof i))throw new TypeError("Cannot call a class as a function")}function y(r,i){if(!r)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return!i||typeof i!="object"&&typeof i!="function"?r:i}function e(r,i){if(typeof i!="function"&&i!==null)throw new TypeError("Super expression must either be null or a function, not "+typeof i);r.prototype=Object.create(i&&i.prototype,{constructor:{value:r,enumerable:!1,writable:!0,configurable:!0}}),i&&(Object.setPrototypeOf?Object.setPrototypeOf(r,i):r.__proto__=i)}var n=function(r){function i(t,o,v){p(this,i);var m=y(this,(i.__proto__||Object.getPrototypeOf(i)).call(this));return m.playbackRate=1,m._currentFrameNumber=0,m._ended=!1,m._paused=!0,m._numPlays=0,m._apng=t,m.context=o,m.stop(),v&&m.play(),m}return e(i,r),a(i,[{key:"renderNextFrame",value:function(){this._currentFrameNumber=(this._currentFrameNumber+1)%this._apng.frames.length,this._currentFrameNumber===this._apng.frames.length-1&&(this._numPlays++,this._apng.numPlays!==0&&this._numPlays>=this._apng.numPlays&&(this._ended=!0,this._paused=!0)),this._prevFrame&&this._prevFrame.disposeOp==1?this.context.clearRect(this._prevFrame.left,this._prevFrame.top,this._prevFrame.width,this._prevFrame.height):this._prevFrame&&this._prevFrame.disposeOp==2&&this.context.putImageData(this._prevFrameData,this._prevFrame.left,this._prevFrame.top);var t=this.currentFrame;this._prevFrame=t,this._prevFrameData=null,t.disposeOp==2&&(this._prevFrameData=this.context.getImageData(t.left,t.top,t.width,t.height)),t.blendOp==0&&this.context.clearRect(t.left,t.top,t.width,t.height),this.context.drawImage(t.imageElement,t.left,t.top),this.emit("frame",this._currentFrameNumber),this._ended&&this.emit("end")}},{key:"play",value:function(){var t=this;this.emit("play"),this._ended&&this.stop(),this._paused=!1;var o=performance.now()+this.currentFrame.delay/this.playbackRate,v=function m(E){if(!t._ended&&!t._paused){if(E>=o){for(;E-o>=t._apng.playTime/t.playbackRate;)o+=t._apng.playTime/t.playbackRate,t._numPlays++;do t.renderNextFrame(),o+=t.currentFrame.delay/t.playbackRate;while(!t._ended&&E>o)}requestAnimationFrame(m)}};requestAnimationFrame(v)}},{key:"pause",value:function(){this._paused||(this.emit("pause"),this._paused=!0)}},{key:"stop",value:function(){this.emit("stop"),this._numPlays=0,this._ended=!1,this._paused=!0,this._currentFrameNumber=-1,this.context.clearRect(0,0,this._apng.width,this._apng.height),this.renderNextFrame()}},{key:"currentFrameNumber",get:function(){return this._currentFrameNumber}},{key:"currentFrame",get:function(){return this._apng.frames[this._currentFrameNumber]}},{key:"paused",get:function(){return this._paused}},{key:"ended",get:function(){return this._ended}}]),i}(h(s(4)).default);l.default=n},function(b,l){function s(){this._events=this._events||{},this._maxListeners=this._maxListeners||void 0}function a(e){return typeof e=="function"}function h(e){return typeof e=="number"}function p(e){return typeof e=="object"&&e!==null}function y(e){return e===void 0}b.exports=s,s.EventEmitter=s,s.prototype._events=void 0,s.prototype._maxListeners=void 0,s.defaultMaxListeners=10,s.prototype.setMaxListeners=function(e){if(!h(e)||e<0||isNaN(e))throw TypeError("n must be a positive number");return this._maxListeners=e,this},s.prototype.emit=function(e){var n,r,i,t,o,v;if(this._events||(this._events={}),e==="error"&&(!this._events.error||p(this._events.error)&&!this._events.error.length)){if((n=arguments[1])instanceof Error)throw n;var m=new Error('Uncaught, unspecified "error" event. ('+n+")");throw m.context=n,m}if(y(r=this._events[e]))return!1;if(a(r))switch(arguments.length){case 1:r.call(this);break;case 2:r.call(this,arguments[1]);break;case 3:r.call(this,arguments[1],arguments[2]);break;default:t=Array.prototype.slice.call(arguments,1),r.apply(this,t)}else if(p(r))for(t=Array.prototype.slice.call(arguments,1),i=(v=r.slice()).length,o=0;o<i;o++)v[o].apply(this,t);return!0},s.prototype.addListener=function(e,n){var r;if(!a(n))throw TypeError("listener must be a function");return this._events||(this._events={}),this._events.newListener&&this.emit("newListener",e,a(n.listener)?n.listener:n),this._events[e]?p(this._events[e])?this._events[e].push(n):this._events[e]=[this._events[e],n]:this._events[e]=n,p(this._events[e])&&!this._events[e].warned&&(r=y(this._maxListeners)?s.defaultMaxListeners:this._maxListeners)&&r>0&&this._events[e].length>r&&(this._events[e].warned=!0,console.error("(node) warning: possible EventEmitter memory leak detected. %d listeners added. Use emitter.setMaxListeners() to increase limit.",this._events[e].length),typeof console.trace=="function"&&console.trace()),this},s.prototype.on=s.prototype.addListener,s.prototype.once=function(e,n){if(!a(n))throw TypeError("listener must be a function");var r=!1;function i(){this.removeListener(e,i),r||(r=!0,n.apply(this,arguments))}return i.listener=n,this.on(e,i),this},s.prototype.removeListener=function(e,n){var r,i,t,o;if(!a(n))throw TypeError("listener must be a function");if(!this._events||!this._events[e])return this;if(t=(r=this._events[e]).length,i=-1,r===n||a(r.listener)&&r.listener===n)delete this._events[e],this._events.removeListener&&this.emit("removeListener",e,n);else if(p(r)){for(o=t;o-- >0;)if(r[o]===n||r[o].listener&&r[o].listener===n){i=o;break}if(i<0)return this;r.length===1?(r.length=0,delete this._events[e]):r.splice(i,1),this._events.removeListener&&this.emit("removeListener",e,n)}return this},s.prototype.removeAllListeners=function(e){var n,r;if(!this._events)return this;if(!this._events.removeListener)return arguments.length===0?this._events={}:this._events[e]&&delete this._events[e],this;if(arguments.length===0){for(n in this._events)n!=="removeListener"&&this.removeAllListeners(n);return this.removeAllListeners("removeListener"),this._events={},this}if(a(r=this._events[e]))this.removeListener(e,r);else if(r)for(;r.length;)this.removeListener(e,r[r.length-1]);return delete this._events[e],this},s.prototype.listeners=function(e){return this._events&&this._events[e]?a(this._events[e])?[this._events[e]]:this._events[e].slice():[]},s.prototype.listenerCount=function(e){if(this._events){var n=this._events[e];if(a(n))return 1;if(n)return n.length}return 0},s.listenerCount=function(e,n){return e.listenerCount(n)}}])},R.exports=T();const q=G(k.exports);async function z(b,l){const s=q(b);if(s instanceof Error)throw s;await s.createImages(),S(l);const{frames:a,width:h,height:p}=s,y=document.createElement("canvas");y.width=h,y.height=p;const e=y.getContext("2d",{willReadFrequently:!0}),n=[],r=[];let i=0;for(const t of a){const o=V(t.delay||100);r.push(o),i+=o;const v=t.imageElement;t.blendOp===0?e.globalCompositeOperation="copy":e.globalCompositeOperation="source-over";const m=t.disposeOp===2?e.getImageData(t.left,t.top,t.width,t.height):void 0;e.drawImage(v,t.left,t.top);const E=e.getImageData(0,0,h,p);n.push(E),t.disposeOp===0||(t.disposeOp===1?e.clearRect(t.left,t.top,t.width,t.height):t.disposeOp===2&&e.putImageData(m,t.left,t.top))}return{frameCount:a.length,duration:i,frameDurations:r,getFrame:t=>n[t],width:h,height:p}}const B=[137,80,78,71,13,10,26,10];function $(b){const l=new Uint8Array(b);return!B.some((s,a)=>s!==l[a])}function J(b){if(!$(b))return!1;const l=new DataView(b),s=new Uint8Array(b);let a,h=8;do{const p=l.getUint32(h);if(a=String.fromCharCode.apply(String,Array.prototype.slice.call(s.subarray(h+4,h+8))),a==="acTL")return!0;h+=12+p}while(a!=="IEND"&&h<s.length);return!1}export{J as isAnimatedPNG,$ as isPNG,z as parseApng};
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