| 1 |
- function testCanImageData(){try{cc=new ImageData(20,20),canUseImageData=!0}catch(t){}}function loadImage(t){PNG.load(t.url,pngLoaded)}function loadImage2(t){var e,a=t.url;e=new XMLHttpRequest,e.open("GET",a,!0),e.responseType="arraybuffer",e.onload=function(){var t,i,r=e.response||e.mozResponseArrayBuffer;if(t=new Uint8Array(r),self.createImageBitmap)return void doCreateImageBitmap(t,a);try{startTime=getTimeNow(),i=new PNG(t),i.url=a,i.startTime=startTime,i.decodeEndTime=getTimeNow(),i.decodeTime=i.decodeEndTime-startTime,pngLoaded(i)}catch(s){pngFail(a,"parse fail"+s.toString()+":ya")}},e.onerror=function(t){pngFail(a,"loadFail")},e.send(null)}function doCreateImageBitmap(t,e){try{var a=getTimeNow();t=new self.Blob([t],{type:"image/png"}),self.createImageBitmap(t).then(function(t){var i={};i.url=e,i.imageBitmap=t,i.dataType="imageBitmap",i.startTime=a,i.decodeTime=getTimeNow()-a,i.sendTime=getTimeNow(),console.log("Decode By createImageBitmap,"+i.decodeTime,e),i.type="Image",postMessage(i,[i.imageBitmap])})["catch"](function(t){showMsgToMain("cache:"+t),pngFail(e,"parse fail"+t+":ya")})}catch(i){pngFail(e,"parse fail"+i.toString()+":ya")}}function getTimeNow(){return(new Date).getTime()}function pngFail(t,e){var a={};a.url=t,a.imagedata=null,a.type="Image",a.msg=e,console.log(e),postMessage(a)}function showMsgToMain(t){var e={};e.type="Msg",e.msg=t,postMessage(e)}function pngLoaded(t){var e={};e.url=t.url,canUseImageData?(e.imagedata=t.getImageData(),e.dataType="imagedata"):(e.buffer=t.getImageDataBuffer(),e.dataType="buffer"),e.width=t.width,e.height=t.height,e.decodeTime=getTimeNow()-t.startTime,console.log("Decode By PNG.js,"+(getTimeNow()-t.startTime),t.url),e.type="Image",canUseImageData?postMessage(e,[e.imagedata.data.buffer]):postMessage(e,[e.buffer.buffer])}var DecodeStream=function(){function t(){this.pos=0,this.bufferLength=0,this.eof=!1,this.buffer=null}return t.prototype={ensureBuffer:function(t){var e=this.buffer,a=e?e.byteLength:0;if(a>t)return e;for(var i=512;t>i;)i<<=1;for(var r=new Uint8Array(i),s=0;a>s;++s)r[s]=e[s];return this.buffer=r},getByte:function(){for(var t=this.pos;this.bufferLength<=t;){if(this.eof)return null;this.readBlock()}return this.buffer[this.pos++]},getBytes:function(t){var e=this.pos;if(t){this.ensureBuffer(e+t);for(var a=e+t;!this.eof&&this.bufferLength<a;)this.readBlock();var i=this.bufferLength;a>i&&(a=i)}else{for(;!this.eof;)this.readBlock();var a=this.bufferLength}return this.pos=a,this.buffer.subarray(e,a)},lookChar:function(){for(var t=this.pos;this.bufferLength<=t;){if(this.eof)return null;this.readBlock()}return String.fromCharCode(this.buffer[this.pos])},getChar:function(){for(var t=this.pos;this.bufferLength<=t;){if(this.eof)return null;this.readBlock()}return String.fromCharCode(this.buffer[this.pos++])},makeSubStream:function(t,e,a){for(var i=t+e;this.bufferLength<=i&&!this.eof;)this.readBlock();return new Stream(this.buffer,t,e,a)},skip:function(t){t||(t=1),this.pos+=t},reset:function(){this.pos=0}},t}(),FlateStream=function(){function t(t){throw new Error(t)}function e(e){var a=0,i=e[a++],r=e[a++];-1!=i&&-1!=r||t("Invalid header in flate stream"),8!=(15&i)&&t("Unknown compression method in flate stream"),((i<<8)+r)%31!=0&&t("Bad FCHECK in flate stream"),32&r&&t("FDICT bit set in flate stream"),this.bytes=e,this.bytesPos=a,this.codeSize=0,this.codeBuf=0,DecodeStream.call(this)}var a=new Uint32Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]),i=new Uint32Array([3,4,5,6,7,8,9,10,65547,65549,65551,65553,131091,131095,131099,131103,196643,196651,196659,196667,262211,262227,262243,262259,327811,327843,327875,327907,258,258,258]),r=new Uint32Array([1,2,3,4,65541,65543,131081,131085,196625,196633,262177,262193,327745,327777,393345,393409,459009,459137,524801,525057,590849,591361,657409,658433,724993,727041,794625,798721,868353,876545]),s=[new Uint32Array([459008,524368,524304,524568,459024,524400,524336,590016,459016,524384,524320,589984,524288,524416,524352,590048,459012,524376,524312,589968,459028,524408,524344,590032,459020,524392,524328,59e4,524296,524424,524360,590064,459010,524372,524308,524572,459026,524404,524340,590024,459018,524388,524324,589992,524292,524420,524356,590056,459014,524380,524316,589976,459030,524412,524348,590040,459022,524396,524332,590008,524300,524428,524364,590072,459009,524370,524306,524570,459025,524402,524338,590020,459017,524386,524322,589988,524290,524418,524354,590052,459013,524378,524314,589972,459029,524410,524346,590036,459021,524394,524330,590004,524298,524426,524362,590068,459011,524374,524310,524574,459027,524406,524342,590028,459019,524390,524326,589996,524294,524422,524358,590060,459015,524382,524318,589980,459031,524414,524350,590044,459023,524398,524334,590012,524302,524430,524366,590076,459008,524369,524305,524569,459024,524401,524337,590018,459016,524385,524321,589986,524289,524417,524353,590050,459012,524377,524313,589970,459028,524409,524345,590034,459020,524393,524329,590002,524297,524425,524361,590066,459010,524373,524309,524573,459026,524405,524341,590026,459018,524389,524325,589994,524293,524421,524357,590058,459014,524381,524317,589978,459030,524413,524349,590042,459022,524397,524333,590010,524301,524429,524365,590074,459009,524371,524307,524571,459025,524403,524339,590022,459017,524387,524323,589990,524291,524419,524355,590054,459013,524379,524315,589974,459029,524411,524347,590038,459021,524395,524331,590006,524299,524427,524363,590070,459011,524375,524311,524575,459027,524407,524343,590030,459019,524391,524327,589998,524295,524423,524359,590062,459015,524383,524319,589982,459031,524415,524351,590046,459023,524399,524335,590014,524303,524431,524367,590078,459008,524368,524304,524568,459024,524400,524336,590017,459016,524384,524320,589985,524288,524416,524352,590049,459012,524376,524312,589969,459028,524408,524344,590033,459020,524392,524328,590001,524296,524424,524360,590065,459010,524372,524308,524572,459026,524404,524340,590025,459018,524388,524324,589993,524292,524420,524356,590057,459014,524380,524316,589977,459030,524412,524348,590041,459022,524396,524332,590009,524300,524428,524364,590073,459009,524370,524306,524570,459025,524402,524338,590021,459017,524386,524322,589989,524290,524418,524354,590053,459013,524378,524314,589973,459029,524410,524346,590037,459021,524394,524330,590005,524298,524426,524362,590069,459011,524374,524310,524574,459027,524406,524342,590029,459019,524390,524326,589997,524294,524422,524358,590061,459015,524382,524318,589981,459031,524414,524350,590045,459023,524398,524334,590013,524302,524430,524366,590077,459008,524369,524305,524569,459024,524401,524337,590019,459016,524385,524321,589987,524289,524417,524353,590051,459012,524377,524313,589971,459028,524409,524345,590035,459020,524393,524329,590003,524297,524425,524361,590067,459010,524373,524309,524573,459026,524405,524341,590027,459018,524389,524325,589995,524293,524421,524357,590059,459014,524381,524317,589979,459030,524413,524349,590043,459022,524397,524333,590011,524301,524429,524365,590075,459009,524371,524307,524571,459025,524403,524339,590023,459017,524387,524323,589991,524291,524419,524355,590055,459013,524379,524315,589975,459029,524411,524347,590039,459021,524395,524331,590007,524299,524427,524363,590071,459011,524375,524311,524575,459027,524407,524343,590031,459019,524391,524327,589999,524295,524423,524359,590063,459015,524383,524319,589983,459031,524415,524351,590047,459023,524399,524335,590015,524303,524431,524367,590079]),9],n=[new Uint32Array([327680,327696,327688,327704,327684,327700,327692,327708,327682,327698,327690,327706,327686,327702,327694,0,327681,327697,327689,327705,327685,327701,327693,327709,327683,327699,327691,327707,327687,327703,327695,0]),5];return e.prototype=Object.create(DecodeStream.prototype),e.prototype.getBits=function(e){for(var a,i=this.codeSize,r=this.codeBuf,s=this.bytes,n=this.bytesPos;e>i;)"undefined"==typeof(a=s[n++])&&t("Bad encoding in flate stream"),r|=a<<i,i+=8;return a=r&(1<<e)-1,this.codeBuf=r>>e,this.codeSize=i-=e,this.bytesPos=n,a},e.prototype.getCode=function(e){for(var a=e[0],i=e[1],r=this.codeSize,s=this.codeBuf,n=this.bytes,o=this.bytesPos;i>r;){var h;"undefined"==typeof(h=n[o++])&&t("Bad encoding in flate stream"),s|=h<<r,r+=8}var f=a[s&(1<<i)-1],d=f>>16,c=65535&f;return(0==r||d>r||0==d)&&t("Bad encoding in flate stream"),this.codeBuf=s>>d,this.codeSize=r-d,this.bytesPos=o,c},e.prototype.generateHuffmanTable=function(t){for(var e=t.length,a=0,i=0;e>i;++i)t[i]>a&&(a=t[i]);for(var r=1<<a,s=new Uint32Array(r),n=1,o=0,h=2;a>=n;++n,o<<=1,h<<=1)for(var f=0;e>f;++f)if(t[f]==n){for(var d=0,c=o,i=0;n>i;++i)d=d<<1|1&c,c>>=1;for(var i=d;r>i;i+=h)s[i]=n<<16|f;++o}return[s,a]},e.prototype.readBlock=function(){function e(t,e,a,i,r){for(var s=t.getBits(a)+i;s-- >0;)e[I++]=r}var o=this.getBits(3);if(1&o&&(this.eof=!0),o>>=1,0==o){var h,f=this.bytes,d=this.bytesPos;"undefined"==typeof(h=f[d++])&&t("Bad block header in flate stream");var c=h;"undefined"==typeof(h=f[d++])&&t("Bad block header in flate stream"),c|=h<<8,"undefined"==typeof(h=f[d++])&&t("Bad block header in flate stream");var l=h;"undefined"==typeof(h=f[d++])&&t("Bad block header in flate stream"),l|=h<<8,l!=(65535&~c)&&t("Bad uncompressed block length in flate stream"),this.codeBuf=0,this.codeSize=0;var u=this.bufferLength,p=this.ensureBuffer(u+c),g=u+c;this.bufferLength=g;for(var m=u;g>m;++m){if("undefined"==typeof(h=f[d++])){this.eof=!0;break}p[m]=h}return void(this.bytesPos=d)}var y,v;if(1==o)y=s,v=n;else if(2==o){for(var b=this.getBits(5)+257,w=this.getBits(5)+1,B=this.getBits(4)+4,T=Array(a.length),I=0;B>I;)T[a[I++]]=this.getBits(3);for(var U=this.generateHuffmanTable(T),D=0,I=0,k=b+w,A=new Array(k);k>I;){var C=this.getCode(U);16==C?e(this,A,2,3,D):17==C?e(this,A,3,3,D=0):18==C?e(this,A,7,11,D=0):A[I++]=D=C}y=this.generateHuffmanTable(A.slice(0,b)),v=this.generateHuffmanTable(A.slice(b,k))}else t("Unknown block type in flate stream");for(var p=this.buffer,S=p?p.length:0,P=this.bufferLength;;){var M=this.getCode(y);if(256>M)P+1>=S&&(p=this.ensureBuffer(P+1),S=p.length),p[P++]=M;else{if(256==M)return void(this.bufferLength=P);M-=257,M=i[M];var L=M>>16;L>0&&(L=this.getBits(L));var D=(65535&M)+L;M=this.getCode(v),M=r[M],L=M>>16,L>0&&(L=this.getBits(L));var x=(65535&M)+L;P+D>=S&&(p=this.ensureBuffer(P+D),S=p.length);for(var N=0;D>N;++N,++P)p[P]=p[P-x]}}},e}();(function(){var t;t=function(){function t(t){var e,a,i,r,s,n,o,h,f,d,c,l,u,p;for(this.data=t,this.pos=8,this.palette=[],this.imgData=[],this.transparency={},this.animation=null,this.text={},s=null;;){switch(e=this.readUInt32(),f=function(){var t,e;for(e=[],n=t=0;4>t;n=++t)e.push(String.fromCharCode(this.data[this.pos++]));return e}.call(this).join("")){case"IHDR":if(this.width=this.readUInt32(),this.height=this.readUInt32(),this.bits=this.data[this.pos++],this.colorType=this.data[this.pos++],this.compressionMethod=this.data[this.pos++],this.filterMethod=this.data[this.pos++],this.interlaceMethod=this.data[this.pos++],0!=this.interlaceMethod)throw new Error("Invalid interlaceMethod: "+this.interlaceMethod);break;case"acTL":this.animation={numFrames:this.readUInt32(),numPlays:this.readUInt32()||1/0,frames:[]};break;case"PLTE":this.palette=this.read(e);break;case"fcTL":s&&this.animation.frames.push(s),this.pos+=4,s={width:this.readUInt32(),height:this.readUInt32(),xOffset:this.readUInt32(),yOffset:this.readUInt32()},r=this.readUInt16(),i=this.readUInt16()||100,s.delay=1e3*r/i,s.disposeOp=this.data[this.pos++],s.blendOp=this.data[this.pos++],s.data=[];break;case"IDAT":case"fdAT":for("fdAT"===f&&(this.pos+=4,e-=4),t=(null!=s?s.data:void 0)||this.imgData,n=l=0;e>=0?e>l:l>e;n=e>=0?++l:--l)t.push(this.data[this.pos++]);break;case"tRNS":switch(this.transparency={},this.colorType){case 3:if(this.transparency.indexed=this.read(e),d=255-this.transparency.indexed.length,d>0)for(n=u=0;d>=0?d>u:u>d;n=d>=0?++u:--u)this.transparency.indexed.push(255);break;case 0:this.transparency.grayscale=this.read(e)[0];break;case 2:this.transparency.rgb=this.read(e)}break;case"tEXt":c=this.read(e),o=c.indexOf(0),h=String.fromCharCode.apply(String,c.slice(0,o)),this.text[h]=String.fromCharCode.apply(String,c.slice(o+1));break;case"IEND":return s&&this.animation.frames.push(s),this.colors=function(){switch(this.colorType){case 0:case 3:case 4:return 1;case 2:case 6:return 3}}.call(this),this.hasAlphaChannel=4===(p=this.colorType)||6===p,a=this.colors+(this.hasAlphaChannel?1:0),this.pixelBitlength=this.bits*a,this.colorSpace=function(){switch(this.colors){case 1:return"DeviceGray";case 3:return"DeviceRGB"}}.call(this),void(this.imgData=new Uint8Array(this.imgData));default:this.pos+=e}if(this.pos+=4,this.pos>this.data.length)throw new Error("Incomplete or corrupt PNG file")}}var e,a,i,r,s,n;return t.load=function(e,a){var i;return"function"==typeof canvas&&(a=canvas),i=new XMLHttpRequest,i.open("GET",e,!0),i.responseType="arraybuffer",i.onload=function(){var r,s;return r=new Uint8Array(i.response||i.mozResponseArrayBuffer),s=new t(r),s.url=e,"function"==typeof a?a(s):void 0},i.send(null)},r=0,i=1,s=2,a=0,e=1,t.prototype.read=function(t){var e,a,i;for(i=[],e=a=0;t>=0?t>a:a>t;e=t>=0?++a:--a)i.push(this.data[this.pos++]);return i},t.prototype.readUInt32=function(){var t,e,a,i;return t=this.data[this.pos++]<<24,e=this.data[this.pos++]<<16,a=this.data[this.pos++]<<8,i=this.data[this.pos++],t|e|a|i},t.prototype.readUInt16=function(){var t,e;return t=this.data[this.pos++]<<8,e=this.data[this.pos++],t|e},t.prototype.decodePixels=function(t){var e,a,i,r,s,n,o,h,f,d,c,l,u,p,g,m,y,v,b,w,B,T,I;if(null==t&&(t=this.imgData),0===t.length)return new Uint8Array(0);for(t=new FlateStream(t),t=t.getBytes(),l=this.pixelBitlength/8,m=l*this.width,u=new Uint8Array(m*this.height),n=t.length,g=0,p=0,a=0;n>p;){switch(t[p++]){case 0:for(r=b=0;m>b;r=b+=1)u[a++]=t[p++];break;case 1:for(r=w=0;m>w;r=w+=1)e=t[p++],s=l>r?0:u[a-l],u[a++]=(e+s)%256;break;case 2:for(r=B=0;m>B;r=B+=1)e=t[p++],i=(r-r%l)/l,y=g&&u[(g-1)*m+i*l+r%l],u[a++]=(y+e)%256;break;case 3:for(r=T=0;m>T;r=T+=1)e=t[p++],i=(r-r%l)/l,s=l>r?0:u[a-l],y=g&&u[(g-1)*m+i*l+r%l],u[a++]=(e+Math.floor((s+y)/2))%256;break;case 4:for(r=I=0;m>I;r=I+=1)e=t[p++],i=(r-r%l)/l,s=l>r?0:u[a-l],0===g?y=v=0:(y=u[(g-1)*m+i*l+r%l],v=i&&u[(g-1)*m+(i-1)*l+r%l]),o=s+y-v,h=Math.abs(o-s),d=Math.abs(o-y),c=Math.abs(o-v),f=d>=h&&c>=h?s:c>=d?y:v,u[a++]=(e+f)%256;break;default:throw new Error("Invalid filter algorithm: "+t[p-1])}g++}return u},t.prototype.decodePalette=function(){var t,e,a,i,r,s,n,o,h,f;i=this.palette,n=this.transparency.indexed||[];var d;for(d=4*i.length/3,s=new Uint8Array(d),r=0,a=i.length,t=0,e=o=0,h=i.length;h>o;e=o+=3)s[r++]=i[e],s[r++]=i[e+1],s[r++]=i[e+2],s[r++]=null!=(f=n[t++])?f:255;return s},t.prototype.getImageData=function(){var t=new self.ImageData(this.width,this.height);return this.copyToImageData(t,this.decodePixels()),t},t.prototype.getImageDataBuffer=function(){var t;return t=self.Uint8ClampedArray?new self.Uint8ClampedArray(this.width*this.height*4):new self.Uint8Array(this.width*this.height*4),this.copyToImageData(t,this.decodePixels()),t},t.prototype.copyToImageData=function(t,e){var a,i,r,s,n,o,h,f,d,c,l;if(i=this.colors,d=null,a=this.hasAlphaChannel,this.palette.length&&(d=null!=(l=this._decodedPalette)?l:this._decodedPalette=this.decodePalette(),i=4,a=!0),r=t.data||t,f=r.length,n=d||e,s=o=0,1===i)for(;f>s;)h=d?4*e[s/4]:o,c=n[h++],r[s++]=c,r[s++]=c,r[s++]=c,r[s++]=a?n[h++]:255,o=h;else for(;f>s;)h=d?4*e[s/4]:o,r[s++]=n[h++],r[s++]=n[h++],r[s++]=n[h++],r[s++]=a?n[h++]:255,o=h},t.prototype.decode=function(){var t;return t=new Uint8Array(this.width*this.height*4),this.copyToImageData(t,this.decodePixels()),t},t.prototype.decodeFrames=function(t){var e,a,i,r,s,o,h,f;if(this.animation){for(h=this.animation.frames,f=[],a=s=0,o=h.length;o>s;a=++s)e=h[a],i=t.createImageData(e.width,e.height),r=this.decodePixels(new Uint8Array(e.data)),this.copyToImageData(i,r),e.imageData=i,f.push(e.image=n(i));return f}},t}(),this.PNG=t}).call(this),onmessage=function(t){var e=t.data;switch(e.type){case"load":loadImage2(e)}};var canUseImageData=!1;testCanImageData();
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