>4===0?this.huffmanTablesDC[15&Q]=Ct(y,b):this.huffmanTablesAC[15&Q]=Ct(y,b)}break;case 65501:A(),this.resetInterval=A();break;case 65498:A();for(var S=e[t++],F=[],R=this.frames[0],D=0;D >>=p,I-=p),I<15&&(l+=m[A++]<>>=p=B>>>24,I-=p,!(16&(p=B>>>16&255))){if(0===(64&p)){B=h[(65535&B)+(l&(1< a){e.msg="invalid distance too far back",w.mode=30;break e}if(l>>>=p,I-=p,Q>(p=r-i)){if((p=Q-p)>g&&w.sane){e.msg="invalid distance too far back",w.mode=30;break e}if(y=0,v=u,0===c){if(y+=s-p,p >>=p,I-=p),I<15&&(l+=m[A++]<>>=p=B>>>24,I-=p,!(16&(p=B>>>16&255))){if(0===(64&p)){B=h[(65535&B)+(l&(1< a){e.msg="invalid distance too far back",w.mode=30;break e}if(l>>>=p,I-=p,Q>(p=r-i)){if((p=Q-p)>g&&w.sane){e.msg="invalid distance too far back",w.mode=30;break e}if(y=0,v=u,0===c){if(y+=s-p,p>4],G.huffmanTableAC=this.huffmanTablesAC[15&k],F.push(G)}var x=e[t++],N=e[t++],U=e[t++],_=ht(e,t,R,F,this.resetInterval,x,N,U>>4,15&U);t+=_;break;case 65535:255!==e[t]&&t--;break;default:if(255===e[t-3]&&e[t-2]>=192&&e[t-2]<=254){t-=3;break}throw new Error("unknown JPEG marker ".concat(i.toString(16)))}i=A()}}},{key:"getResult",value:function(){var e=this.frames;if(0===this.frames.length)throw new Error("no frames were decoded");this.frames.length>1&&console.warn("more than one frame is not supported");for(var t=0;t>=7;n<30;n++)for(kt[n]=r<<7,e=0;e<1<0&&(0===e||1!==Q))return-1;for(G[1]=0,B=1;B<15;B++)G[B+1]=G[B]+D[B];for(p=0;p
852||2===e&&w>592)return 1;r[c=S&u]=y<<24|v<<16|l-i|0}}return 0!==S&&(r[l+S]=B-m<<24|64<<16|0),a.bits=y,0},En=AA.Z_FINISH,Qn=AA.Z_BLOCK,yn=AA.Z_TREES,vn=AA.Z_OK,mn=AA.Z_STREAM_END,bn=AA.Z_NEED_DICT,wn=AA.Z_STREAM_ERROR,Sn=AA.Z_DATA_ERROR,Fn=AA.Z_MEM_ERROR,Rn=AA.Z_BUF_ERROR,Dn=AA.Z_DEFLATED,Gn=function(e){return(e>>>24&255)+(e>>>8&65280)+((65280&e)<<8)+((255&e)<<24)};function kn(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new Uint16Array(320),this.work=new Uint16Array(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}var xn,Nn,Un=function(e){if(!e||!e.state)return wn;var t=e.state;return e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new Int32Array(852),t.distcode=t.distdyn=new Int32Array(592),t.sane=1,t.back=-1,vn},_n=function(e){if(!e||!e.state)return wn;var t=e.state;return t.wsize=0,t.whave=0,t.wnext=0,Un(e)},Mn=function(e,t){var A;if(!e||!e.state)return wn;var n=e.state;return t<0?(A=0,t=-t):(A=1+(t>>4),t<48&&(t&=15)),t&&(t<8||t>15)?wn:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=A,n.wbits=t,_n(e))},On=function(e,t){if(!e)return wn;var A=new kn;e.state=A,A.window=null;var n=Mn(e,t);return n!==vn&&(e.state=null),n},Ln=!0,Tn=function(e){if(Ln){xn=new Int32Array(512),Nn=new Int32Array(32);for(var t=0;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(pn(1,e.lens,0,288,xn,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;pn(2,e.lens,0,32,Nn,0,e.work,{bits:5}),Ln=!1}e.lencode=xn,e.lenbits=9,e.distcode=Nn,e.distbits=5},Zn=function(e,t,A,n){var r,i=e.state;return null===i.window&&(i.wsize=1<
>=7;n<30;n++)for(m[n]=r<<7,e=0;e<1<0?(2===e.strm.data_type&&(e.strm.data_type=function(e){var t,A=4093624447;for(t=0;t<=31;t++,A>>>=1)if(1&A&&0!==e.dyn_ltree[2*t])return 0;if(0!==e.dyn_ltree[18]||0!==e.dyn_ltree[20]||0!==e.dyn_ltree[26])return 1;for(t=32;t<256;t++)if(0!==e.dyn_ltree[2*t])return 1;return 0}(e)),O(e,e.l_desc),O(e,e.d_desc),o=function(e){var t;for(L(e,e.dyn_ltree,e.l_desc.max_code),L(e,e.dyn_dtree,e.d_desc.max_code),O(e,e.bl_desc),t=18;t>=3&&0===e.bl_tree[2*h[t]+1];t--);return e.opt_len+=3*(t+1)+5+5+4,t}(e),r=e.opt_len+3+7>>>3,(i=e.static_len+3+7>>>3)<=r&&(r=i)):r=i=A+5,A+4<=r&&-1!==t?H(e,t,A,n):4===e.strategy||i===r?(R(e,2+(n?1:0),3),M(e,f,d)):(R(e,4+(n?1:0),3),function(e,t,A,n){var r;for(R(e,t-257,5),R(e,A-1,5),R(e,n-4,4),r=0;r0&&(0===e||1!==Q))return-1;for(G[1]=0,B=1;B<15;B++)G[B+1]=G[B]+D[B];for(p=0;p
852||2===e&&w>592)return 1;r[c=S&u]=y<<24|v<<16|l-i|0}}return 0!==S&&(r[l+S]=B-m<<24|64<<16|0),a.bits=y,0},It=K.Z_FINISH,Ct=K.Z_BLOCK,ht=K.Z_TREES,ft=K.Z_OK,dt=K.Z_STREAM_END,Bt=K.Z_NEED_DICT,pt=K.Z_STREAM_ERROR,Et=K.Z_DATA_ERROR,Qt=K.Z_MEM_ERROR,yt=K.Z_BUF_ERROR,vt=K.Z_DEFLATED,mt=function(e){return(e>>>24&255)+(e>>>8&65280)+((65280&e)<<8)+((255&e)<<24)};function bt(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new Uint16Array(320),this.work=new Uint16Array(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}var wt,St,Ft=function(e){if(!e||!e.state)return pt;var t=e.state;return e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new Int32Array(852),t.distcode=t.distdyn=new Int32Array(592),t.sane=1,t.back=-1,ft},Rt=function(e){if(!e||!e.state)return pt;var t=e.state;return t.wsize=0,t.whave=0,t.wnext=0,Ft(e)},Dt=function(e,t){var A;if(!e||!e.state)return pt;var n=e.state;return t<0?(A=0,t=-t):(A=1+(t>>4),t<48&&(t&=15)),t&&(t<8||t>15)?pt:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=A,n.wbits=t,Rt(e))},Gt=function(e,t){if(!e)return pt;var A=new bt;e.state=A,A.window=null;var n=Dt(e,t);return n!==ft&&(e.state=null),n},kt=!0,xt=function(e){if(kt){wt=new Int32Array(512),St=new Int32Array(32);for(var t=0;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(lt(1,e.lens,0,288,wt,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;lt(2,e.lens,0,32,St,0,e.work,{bits:5}),kt=!1}e.lencode=wt,e.lenbits=9,e.distcode=St,e.distbits=5},Nt=function(e,t,A,n){var r,i=e.state;return null===i.window&&(i.wsize=1<