@azinformatica/pdfjs-dist/legacy/image_decoders/pdf.image_decoders.min.js

Generic build of Mozilla's PDF.js library. (FORK)

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2021 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */
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DecodingContext(t,r,i){_classCallCheck(this,DecodingContext);this.data=t;this.start=r;this.end=i}_createClass(DecodingContext,[{key:"decoder",get:function get(){var t=new c.ArithmeticDecoder(this.data,this.start,this.end);return(0,o.shadow)(this,"decoder",t)}},{key:"contextCache",get:function get(){var t=new h;return(0,o.shadow)(this,"contextCache",t)}}]);return DecodingContext}();function decodeInteger(t,r,i){var o=t.getContexts(r),a=1;function readBits(t){for(var r=0,c=0;c<t;c++){var l=i.readBit(o,a);a=a<256?a<<1|l:511&(a<<1|l)|256;r=r<<1|l}return r>>>0}var c=readBits(1),l=readBits(1)?readBits(1)?readBits(1)?readBits(1)?readBits(1)?readBits(32)+4436:readBits(12)+340:readBits(8)+84:readBits(6)+20:readBits(4)+4:readBits(2);return 0===c?l:l>0?-l:null}function decodeIAID(t,r,i){for(var o=t.getContexts("IAID"),a=1,c=0;c<i;c++){a=a<<1|r.readBit(o,a)}return i<31?a&(1<<i)-1:2147483647&a}var p=["SymbolDictionary",null,null,null,"IntermediateTextRegion",null,"ImmediateTextRegion","ImmediateLosslessTextRegion",null,null,null,null,null,null,null,null,"PatternDictionary",null,null,null,"IntermediateHalftoneRegion",null,"ImmediateHalftoneRegion","ImmediateLosslessHalftoneRegion",null,null,null,null,null,null,null,null,null,null,null,null,"IntermediateGenericRegion",null,"ImmediateGenericRegion","ImmediateLosslessGenericRegion","IntermediateGenericRefinementRegion",null,"ImmediateGenericRefinementRegion","ImmediateLosslessGenericRefinementRegion",null,null,null,null,"PageInformation","EndOfPage","EndOfStripe","EndOfFile","Profiles","Tables",null,null,null,null,null,null,null,null,"Extension"],m=[[{x:-1,y:-2},{x:0,y:-2},{x:1,y:-2},{x:-2,y:-1},{x:-1,y:-1},{x:0,y:-1},{x:1,y:-1},{x:2,y:-1},{x:-4,y:0},{x:-3,y:0},{x:-2,y:0},{x:-1,y:0}],[{x:-1,y:-2},{x:0,y:-2},{x:1,y:-2},{x:2,y:-2},{x:-2,y:-1},{x:-1,y:-1},{x:0,y:-1},{x:1,y:-1},{x:2,y:-1},{x:-3,y:0},{x:-2,y:0},{x:-1,y:0}],[{x:-1,y:-2},{x:0,y:-2},{x:1,y:-2},{x:-2,y:-1},{x:-1,y:-1},{x:0,y:-1},{x:1,y:-1},{x:-2,y:0},{x:-1,y:0}],[{x:-3,y:-1},{x:-2,y:-1},{x:-1,y:-1},{x:0,y:-1},{x:1,y:-1},{x:-4,y:0},{x:-3,y:0},{x:-2,y:0},{x:-1,y:0}]],y=[{coding:[{x:0,y:-1},{x:1,y:-1},{x:-1,y:0}],reference:[{x:0,y:-1},{x:1,y:-1},{x:-1,y:0},{x:0,y:0},{x:1,y:0},{x:-1,y:1},{x:0,y:1},{x:1,y:1}]},{coding:[{x:-1,y:-1},{x:0,y:-1},{x:1,y:-1},{x:-1,y:0}],reference:[{x:0,y:-1},{x:-1,y:0},{x:0,y:0},{x:1,y:0},{x:0,y:1},{x:1,y:1}]}],v=[39717,1941,229,405],g=[32,8];function decodeBitmap(t,r,i,o,a,c,l,u){if(t){return decodeMMRBitmap(new S(u.data,u.start,u.end),r,i,!1)}if(0===o&&!c&&!a&&4===l.length&&3===l[0].x&&-1===l[0].y&&-3===l[1].x&&-1===l[1].y&&2===l[2].x&&-2===l[2].y&&-2===l[3].x&&-2===l[3].y)return function decodeBitmapTemplate0(t,r,i){var o,a,c,l,u,h,d,p=i.decoder,m=i.contextCache.getContexts("GB"),y=[];for(a=0;a<r;a++){u=y[a]=new Uint8Array(t);h=a<1?u:y[a-1];o=(d=a<2?u:y[a-2])[0]<<13|d[1]<<12|d[2]<<11|h[0]<<7|h[1]<<6|h[2]<<5|h[3]<<4;for(c=0;c<t;c++){u[c]=l=p.readBit(m,o);o=(31735&o)<<1|(c+3<t?d[c+3]<<11:0)|(c+4<t?h[c+4]<<4:0)|l}}return y}(r,i,u);var h=!!c,d=m[o].concat(l);d.sort((function(t,r){return t.y-r.y||t.x-r.x}));var p,y,g=d.length,b=new Int8Array(g),x=new Int8Array(g),w=[],_=0,C=0,k=0,P=0;for(y=0;y<g;y++){b[y]=d[y].x;x[y]=d[y].y;C=Math.min(C,d[y].x);k=Math.max(k,d[y].x);P=Math.min(P,d[y].y);y<g-1&&d[y].y===d[y+1].y&&d[y].x===d[y+1].x-1?_|=1<<g-1-y:w.push(y)}var T=w.length,I=new Int8Array(T),O=new Int8Array(T),E=new Uint16Array(T);for(p=0;p<T;p++){y=w[p];I[p]=d[y].x;O