/*! 
 * Copyright 2021-2023 Ethan Halsall
 * https://github.com/eshaz/icecast-metadata-js
 *
 * This file is part of icecast-metadata-player.
 *
 * icecast-metadata-player free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * icecast-metadata-player distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>
 */
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Map(Object.entries(i)),s=p.get("correlate"),o=new Float32Array(t.buffer),h=new DataView(t.buffer),q=p.get("__heap_base").value,n=this.u(e.channelData,o,q),O=this.u(g.channelData,o,n),c=O+f;s(q,e.samplesDecoded,e.channelData.length,n,g.samplesDecoded,g.channelData.length,b,r,O,c);return{correlation:h.getFloat32(O,!0),sampleOffset:h.getInt32(c,!0)}}))},this.N=(e,g,f)=>{const b=[],r=[0],t=this.q(e,g),i=Math.log(e.samplesDecoded*t)/Math.log(this.i+1)*Math.log(t/1e4+1);f=Math.max(Math.round(Math.min(f,i,e.samplesDecoded/t/4)),1);const p=Math.ceil(e.samplesDecoded/f);let s=0;for(let i=0;i<f;i++){const f={channelData:[]};for(let g=0;g<e.channelData.length;g++){const b=e.channelData[g].subarray(s,s+p+t);f.channelData.push(b),f.samplesDecoded=b.length}s+=p-t,r.push(s),b.push(this.I(f,g))}return Promise.all(b).then((e=>{let g=0,f=-1;for(let b=0;b<e.length;b++)e[b].correlation>f&&(g=b,f=e[b].correlation);return{correlation:e[g].correlation,sampleOffset:e[g].sampleOffset+r[g]}}))},this.I=(e,g)=>this.j("_sync",[e,g]),this.k=(e,g,f)=>globalThis.Worker?this.j("_syncWorkerConcurrent",[e,g,f]):this.N(e,g,f),this.l=new Map([["_sync",this.m],["_syncWorker",this.I],["_syncWorkerConcurrent",this.N]]),this.o=g,this.t=f,this.i=b},this.v=new this.SynAudioWorker(this.o,this.t,this.i)}async syncWorkerConcurrent(e,g,f){return this.v.k(e,g,f>=1?f:1)}async syncWorker(e,g){return this.v.I(e,g)}async sync(e,g){return this.v.m(e,g)}async syncMultiple(e,g){g=g>=1?g:8;const f=[],b=[];let r=()=>{},t=Promise.resolve(),i=0;for(let g=0;g<e.length;g++)b.push({vertex:{}});for(let p=0;p<e.length;p++){const s=e[p],o=b[p].vertex;o.name=s.name,o.samplesDecoded=s.data.samplesDecoded,o.edges=new Set;for(let h=0;h<e.length;h++){if(p===h)continue;const q=e[h],n=b[h];i++,f.push(this.syncWorker(s.data,q.data).then((e=>{e.correlation>this.p&&o.edges.add({parent:o,vertex:n.vertex,samplesDecoded:q.data.samplesDecoded,...e}),i--,r()}))),i>=g&&(t=new Promise((e=>{r=e})),await t)}}await Promise.all(f);const p=(e,g)=>e.parent&&g.parent&&e.parent.samplesDecoded!==g.parent.samplesDecoded?e.parent.samplesDecoded>g.parent.samplesDecoded:e.correlation!==g.correlation?e.correlation>g.correlation:e.sampleOffset!==g.sampleOffset?e.sampleOffset>g.sampleOffset:e.vertex&&g.vertex&&e.vertex.name.localeCompare(g.vertex.name)<0,s=new Map,o=new Set,h=e=>{for(const g of e.edges.values()){if(s.has(e))return s.get(e);s.set(e,g);const f=h(g.vertex),b=g;if(f){let e,g;p(f,b)?(e=f,g=b):(e=b,g=f),g.cycleWith||(g.cycleWith=new Set,o.add(g)),g.cycleWith.add(e),e.cycleWith&&e.cycleWith.delete(g)}s.delete(e)}};for(const{vertex:e}of b)h(e);for(const e of o)e.cycleWith.size&&e.parent.edges.delete(e);const q=new Set;for(const e of b)q.add(e.vertex);for(const e of b)for(const g of e.vertex.edges)q.delete(g.vertex);const n=(e,g,f,b=0)=>{for(const r of f)e.has(r.vertex)&&p(e.get(r.vertex),r)||e.set(r.vertex,{name:r.vertex.name,correlation:r.correlation,sampleOffset:b+r.sampleOffset}),n(e,g,r.vertex.edges,b+r.sampleOffset)},O=[];for(const e of q){const g=new Map;g.set(e,{name:e.name,sampleOffset:0}),n(g,e,e.edges),O.push([...g.values()].sort(((e,g)=>e.sampleOffset-g.sampleOffset||(e.correlation||0)-(g.correlation||0)||g.name.localeCompare(e.name))))}return O}}const h=o}}]);
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