ja-geotiff/dist-node/worker/create.js

GeoTIFF image decoding in JavaScript

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const web_worker_1 = __importDefault(require("web-worker"));
function create() {
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d{constructor(){this.jfif=null,this.adobe=null,this.quantizationTables=[],this.huffmanTablesAC=[],this.huffmanTablesDC=[],this.resetFrames()}resetFrames(){this.frames=[]}parse(A){let I=0;function g(){const g=A[I]<<8|A[I+1];return I+=2,g}function B(){const B=g(),C=A.subarray(I,I+B-2);return I+=C.length,C}function C(A){let I,g,B=0,C=0;for(g in A.components)A.components.hasOwnProperty(g)&&(I=A.components[g],B<I.h&&(B=I.h),C<I.v&&(C=I.v));const Q=Math.ceil(A.samplesPerLine/8/B),E=Math.ceil(A.scanLines/8/C);for(g in A.components)if(A.components.hasOwnProperty(g)){I=A.components[g];const i=Math.ceil(Math.ceil(A.samplesPerLine/8)*I.h/B),s=Math.ceil(Math.ceil(A.scanLines/8)*I.v/C),t=Q*I.h,o=E*I.v,a=[];for(let A=0;A<o;A++){const A=[];for(let I=0;I<t;I++)A.push(new Int32Array(64));a.push(A)}I.blocksPerLine=i,I.blocksPerColumn=s,I.blocks=a}A.maxH=B,A.maxV=C,A.mcusPerLine=Q,A.mcusPerColumn=E}let Q=g();if(65496!==Q)throw new Error(\"SOI not found\");for(Q=g();65497!==Q;){switch(Q){case 65280:break;case 65504:case 65505:case 65506:case 65507:case 65508:case 65509:case 65510:case 65511:case 65512:case 65513:case 65514:case 65515:case 65516:case 65517:case 65518:case 65519:case 65534:{const A=B();65504===Q&&74===A[0]&&70===A[1]&&73===A[2]&&70===A[3]&&0===A[4]&&(this.jfif={version:{major:A[5],minor:A[6]},densityUnits:A[7],xDensity:A[8]<<8|A[9],yDensity:A[10]<<8|A[11],thumbWidth:A[12],thumbHeight:A[13],thumbData:A.subarray(14,14+3*A[12]*A[13])}),65518===Q&&65===A[0]&&100===A[1]&&111===A[2]&&98===A[3]&&101===A[4]&&0===A[5]&&(this.adobe={version:A[6],flags0:A[7]<<8|A[8],flags1:A[9]<<8|A[10],transformCode:A[11]});break}case 65499:{const B=g()+I-2;for(;I<B;){const B=A[I++],C=new Int32Array(64);if(B>>4){if(B>>4!=1)throw new Error(\"DQT: invalid table spec\");for(let A=0;A<64;A++){C[a[A]]=g()}}else for(let g=0;g<64;g++){C[a[g]]=A[I++]}this.quantizationTables[15&B]=C}break}case 65472:case 65473:case 65474:{g();const B={extended:65473===Q,progressive:65474===Q,precision:A[I++],scanLines:g(),samplesPerLine:g(),components:{},componentsOrder:[]},E=A[I++];let i;for(let g=0;g<E;g++){i=A[I];const g=A[I+1]>>4,C=15&A[I+1],Q=A[I+2];B.componentsOrder.push(i),B.components[i]={h:g,v:C,quantizationIdx:Q},I+=3}C(B),this.frames.push(B);break}case 65476:{const B=g();for(let g=2;g<B;){const B=A[I++],C=new Uint8Array(16);let Q=0;for(let g=0;g<16;g++,I++)C[g]=A[I],Q+=C[g];const E=new Uint8Array(Q);for(let g=0;g<Q;g++,I++)E[g]=A[I];g+=17+Q,B>>4?this.huffmanTablesAC[15&B]=S(C,E):this.huffmanTablesDC[15&B]=S(C,E)}break}case 65501:g(),this.resetInterval=g();break;case 65498:{g();const B=A[I++],C=[],Q=this.frames[0];for(let g=0;g<B;g++){const g=Q.components[A[I++]],B=A[I++];g.huffmanTableDC=this.huffmanTablesDC[B>>4],g.huffmanTableAC=this.huffmanTablesAC[15&B],C.push(g)}const E=A[I++],i=A[I++],s=A[I++],t=N(A,I,Q,C,this.resetInterval,E,i,s>>4,15&s);I+=t;break}case 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I,g,B,C=A.w_size;I=A.hash_size,B=I;do{g=A.head[--B],A.head[B]=g>=C?g-C:0}while(--I);I=C,B=I;do{g=A.prev[--B],A.prev[B]=g>=C?g-C:0}while(--I)};let vA=(A,I,g)=>(I<<A.hash_shift^g)&A.hash_mask;const PA=A=>{const I=A.state;let g=I.pending;g>A.avail_out&&(g=A.avail_out),0!==g&&(A.output.set(I.pending_buf.subarray(I.pending_out,I.pending_out+g),A.next_out),A.next_out+=g,I.pending_out+=g,A.total_out+=g,A.avail_out-=g,I.pending-=g,0===I.pending&&(I.pending_out=0))},jA=(A,I)=>{nA(A,A.block_start>=0?A.block_start:-1,A.strstart-A.block_start,I),A.block_start=A.strstart,PA(A.strm)},WA=(A,I)=>{A.pending_buf[A.pending++]=I},VA=(A,I)=>{A.pending_buf[A.pending++]=I>>>8&255,A.pending_buf[A.pending++]=255&I},zA=(A,I,g,B)=>{let C=A.avail_in;return C>B&&(C=B),0===C?0:(A.avail_in-=C,I.set(A.input.subarray(A.next_in,A.next_in+C),g),1===A.state.wrap?A.adler=tA(A.adler,I,C,g):2===A.state.wrap&&(A.adler=aA(A.adler,I,C,g)),A.next_in+=C,A.total_in+=C,C)},XA=(A,I)=>{let g,B,C=A.max_chain_length,Q=A.strstart,E=A.prev_length,i=A.nice_match;const s=A.strstart>A.w_size-pA?A.strstart-(A.w_size-pA):0,t=A.window,o=A.w_mask,a=A.prev,e=A.strstart+mA;let r=t[Q+E-1],D=t[Q+E];A.prev_length>=A.good_match&&(C>>=2),i>A.lookahead&&(i=A.lookahead);do{if(g=I,t[g+E]===D&&t[g+E-1]===r&&t[g]===t[Q]&&t[++g]===t[Q+1]){Q+=2,g++;do{}while(t[++Q]===t[++g]&&t[++Q]===t[++g]&&t[++Q]===t[++g]&&t[++Q]===t[++g]&&t[++Q]===t[++g]&&t[++Q]===t[++g]&&t[++Q]===t[++g]&&t[++Q]===t[++g]&&Q<e);if(B=mA-(e-Q),Q=e-mA,B>E){if(A.match_start=I,E=B,B>=i)break;r=t[Q+E-1],D=t[Q+E]}}}while((I=a[I&o])>s&&0!==--C);return E<=A.lookahead?E:A.lookahead},$A=A=>{const I=A.w_size;let g,B,C;do{if(B=A.window_size-A.lookahead-A.strstart,A.strstart>=I+(I-pA)&&(A.window.set(A.window.subarray(I,I+I-B),0),A.match_start-=I,A.strstart-=I,A.block_start-=I,A.insert>A.strstart&&(A.insert=A.strstart),ZA(A),B+=I),0===A.strm.avail_in)break;if(g=zA(A.strm,A.window,A.strstart+A.lookahead,B),A.lookahead+=g,A.lookahead+A.insert>=3)for(C=A.strstart-A.insert,A.ins_h=A.window[C],A.ins_h=vA(A,A.ins_h,A.window[C+1]);A.insert&&(A.ins_h=vA(A,A.ins_h,A.window[C+3-1]),A.prev[C&A.w_mask]=A.head[A.ins_h],A.head[A.ins_h]=C,C++,A.insert--,!(A.lookahead+A.insert<3)););}while(A.lookahead<pA&&0!==A.strm.avail_in)},AI=(A,I)=>{let g,B,C,Q=A.pending_buf_size-5>A.w_size?A.w_size:A.pending_buf_size-5,E=0,i=A.strm.avail_in;do{if(g=65535,C=A.bi_valid+42>>3,A.strm.avail_out<C)break;if(C=A.strm.avail_out-C,B=A.strstart-A.block_start,g>B+A.strm.avail_in&&(g=B+A.strm.avail_in),g>C&&(g=C),g<Q&&(0===g&&I!==cA||I===GA||g!==B+A.strm.avail_in))break;E=I===cA&&g===B+A.strm.avail_in?1:0,hA(A,0,0,E),A.pending_buf[A.pending-4]=g,A.pending_buf[A.pending-3]=g>>8,A.pending_buf[A.pending-2]=~g,A.pending_buf[A.pending-1]=~g>>8,PA(A.strm),B&&(B>g&&(B=g),A.strm.output.set(A.window.subarray(A.block_start,A.block_start+B),A.strm.next_out),A.strm.next_out+=B,A.strm.avail_out-=B,A.strm.total_out+=B,A.block_start+=B,g-=B),g&&(zA(A.strm,A.strm.output,A.strm.next_out,g),A.strm.next_out+=g,A.strm.avail_out-=g,A.strm.total_out+=g)}while(0===E);return 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0!==k&&(C[r+k]=h-N<<24|64<<16),i.bits=G,0};const{Z_FINISH:qI,Z_BLOCK:bI,Z_TREES:xI,Z_OK:_I,Z_STREAM_END:OI,Z_NEED_DICT:TI,Z_STREAM_ERROR:ZI,Z_DATA_ERROR:vI,Z_MEM_ERROR:PI,Z_BUF_ERROR:jI,Z_DEFLATED:WI}=rA,VI=16180,zI=16190,XI=16191,$I=16192,Ag=16194,Ig=16199,gg=16200,Bg=16206,Cg=16209,Qg=A=>(A>>>24&255)+(A>>>8&65280)+((65280&A)<<8)+((255&A)<<24);function Eg(){this.strm=null,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}const ig=A=>{if(!A)return 1;const 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Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);if(ig(A)||!A.output||!A.input&&0!==A.avail_in)return ZI;g=A.state,g.mode===XI&&(g.mode=$I),E=A.next_out,C=A.output,s=A.avail_out,Q=A.next_in,B=A.input,i=A.avail_in,t=g.hold,o=g.bits,a=i,e=s,d=_I;A:for(;;)switch(g.mode){case VI:if(0===g.wrap){g.mode=$I;break}for(;o<16;){if(0===i)break A;i--,t+=B[Q++]<<o,o+=8}if(2&g.wrap&&35615===t){0===g.wbits&&(g.wbits=15),g.check=0,F[0]=255&t,F[1]=t>>>8&255,g.check=aA(g.check,F,2,0),t=0,o=0,g.mode=16181;break}if(g.head&&(g.head.done=!1),!(1&g.wrap)||(((255&t)<<8)+(t>>8))%31){A.msg=\"incorrect header check\",g.mode=Cg;break}if((15&t)!==WI){A.msg=\"unknown compression method\",g.mode=Cg;break}if(t>>>=4,o-=4,c=8+(15&t),0===g.wbits&&(g.wbits=c),c>15||c>g.wbits){A.msg=\"invalid window size\",g.mode=Cg;break}g.dmax=1<<g.wbits,g.flags=0,A.adler=g.check=1,g.mode=512&t?16189:XI,t=0,o=0;break;case 16181:for(;o<16;){if(0===i)break A;i--,t+=B[Q++]<<o,o+=8}if(g.flags=t,(255&g.flags)!==WI){A.msg=\"unknown 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