1159cl/lib/icecast-metadata-player-1.17.3.common.min.js.map

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{ decode } from \"simple-yenc\";\n\nexport default function WASMAudioDecoderCommon() {\n  // setup static methods\n  const uint8Array = Uint8Array;\n  const float32Array = Float32Array;\n\n  if (!WASMAudioDecoderCommon.modules) {\n    Object.defineProperties(WASMAudioDecoderCommon, {\n      modules: {\n        value: new WeakMap(),\n      },\n\n      setModule: {\n        value(Ref, module) {\n          WASMAudioDecoderCommon.modules.set(Ref, Promise.resolve(module));\n        },\n      },\n\n      getModule: {\n        value(Ref, wasmString) {\n          let module = WASMAudioDecoderCommon.modules.get(Ref);\n\n          if (!module) {\n            if (!wasmString) {\n              wasmString = Ref.wasm;\n              module = WASMAudioDecoderCommon.inflateDynEncodeString(\n                wasmString,\n              ).then((data) => WebAssembly.compile(data));\n            } else {\n              module = WebAssembly.compile(decode(wasmString));\n            }\n\n            WASMAudioDecoderCommon.modules.set(Ref, module);\n          }\n\n          return module;\n        },\n      },\n\n      concatFloat32: {\n        value(buffers, length) {\n          let ret = new float32Array(length),\n            i = 0,\n            offset = 0;\n\n          while (i < buffers.length) {\n            ret.set(buffers[i], offset);\n            offset += buffers[i++].length;\n          }\n\n          return ret;\n        },\n      },\n\n      getDecodedAudio: {\n        value: (errors, channelData, samplesDecoded, sampleRate, bitDepth) => ({\n          errors,\n          channelData,\n          samplesDecoded,\n          sampleRate,\n          bitDepth,\n        }),\n      },\n\n      getDecodedAudioMultiChannel: {\n        value(\n          errors,\n          input,\n          channelsDecoded,\n          samplesDecoded,\n          sampleRate,\n          bitDepth,\n        ) {\n          let channelData = [],\n            i,\n            j;\n\n          for (i = 0; i < channelsDecoded; i++) {\n            const channel = [];\n            for (j = 0; j < input.length; ) channel.push(input[j++][i] || []);\n            channelData.push(\n              WASMAudioDecoderCommon.concatFloat32(channel, samplesDecoded),\n            );\n          }\n\n          return WASMAudioDecoderCommon.getDecodedAudio(\n            errors,\n            channelData,\n            samplesDecoded,\n            sampleRate,\n            bitDepth,\n          );\n        },\n      },\n\n      /*\n       ******************\n       * Compression Code\n       ******************\n       */\n\n      inflateDynEncodeString: {\n        value(source) {\n          source = decode(source);\n\n          return new Promise((resolve) => {\n            // prettier-ignore\n            const puffString = 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\u0014\u0017\u0014!\u0014\u0016\u0014\"\u0014\u0015\u0014#`;\n\n            WASMAudioDecoderCommon.getModule(WASMAudioDecoderCommon, puffString)\n              .then((wasm) => WebAssembly.instantiate(wasm, {}))\n              .then(({ exports }) => {\n                // required for minifiers that mangle the __heap_base property\n                const instanceExports = new Map(Object.entries(exports));\n\n                const puff = instanceExports.get(\"puff\");\n                const memory = instanceExports.get(\"memory\")[\"buffer\"];\n                const dataArray = new uint8Array(memory);\n                const heapView = new DataView(memory);\n\n                let heapPos = instanceExports.get(\"__heap_base\");\n\n                // source length\n                const sourceLength = source.length;\n                const sourceLengthPtr = heapPos;\n                heapPos += 4;\n                heapView.setInt32(sourceLengthPtr, sourceLength, true);\n\n                // source data\n                const sourcePtr = heapPos;\n                heapPos += sourceLength;\n                dataArray.set(source, sourcePtr);\n\n                // destination length\n                const destLengthPtr = heapPos;\n                heapPos += 4;\n                heapView.setInt32(\n                  destLengthPtr,\n                  dataArray.byteLength - heapPos,\n                  true,\n                );\n\n                // destination data fills in the rest of the heap\n                puff(heapPos, destLengthPtr, sourcePtr, sourceLengthPtr);\n\n                resolve(\n                  dataArray.slice(\n                    heapPos,\n                    heapPos + heapView.getInt32(destLengthPtr, true),\n                  ),\n                );\n              });\n          });\n        },\n      },\n    });\n  }\n\n  Object.defineProperty(this, \"wasm\", {\n    enumerable: true,\n    get: () => this._wasm,\n  });\n\n  this.getOutputChannels = (outputData, channelsDecoded, samplesDecoded) => {\n    let output = [],\n      i = 0;\n\n    while (i < channelsDecoded)\n      output.push(\n        outputData.slice(\n          i * samplesDecoded,\n          i++ * samplesDecoded + samplesDecoded,\n        ),\n      );\n\n    return output;\n  };\n\n  this.allocateTypedArray = (len, TypedArray, setPointer = true) => {\n    const ptr = this._wasm.malloc(TypedArray.BYTES_PER_ELEMENT * len);\n    if (setPointer) this._pointers.add(ptr);\n\n    return {\n      ptr: ptr,\n      len: len,\n      buf: new TypedArray(this._wasm.HEAP, ptr, len),\n    };\n  };\n\n  this.free = () => {\n    this._pointers.forEach((ptr) => {\n      this._wasm.free(ptr);\n    });\n    this._pointers.clear();\n  };\n\n  this.codeToString = (ptr) => {\n    const characters = [],\n      heap = new Uint8Array(this._wasm.HEAP);\n    for (let character = heap[ptr]; character !== 0; character = heap[++ptr])\n      characters.push(character);\n\n    return String.fromCharCode.apply(null, characters);\n  };\n\n  this.addError = (\n    errors,\n    message,\n    frameLength,\n    frameNumber,\n    inputBytes,\n    outputSamples,\n  ) => {\n    errors.push({\n      message: message,\n      frameLength: frameLength,\n      frameNumber: frameNumber,\n      inputBytes: inputBytes,\n      outputSamples: outputSamples,\n    });\n  };\n\n  this.instantiate = (_EmscriptenWASM, _module) => {\n    if (_module) WASMAudioDecoderCommon.setModule(_EmscriptenWASM, _module);\n    this._wasm = new _EmscriptenWASM(WASMAudioDecoderCommon).instantiate();\n    this._pointers = new Set();\n\n    return this._wasm.ready.then(() => this);\n  };\n}\n","import NodeWorker from \"@eshaz/web-worker\";\nimport WASMAudioDecoderCommon from \"./WASMAudioDecoderCommon.js\";\n\nconst getWorker = () => globalThis.Worker || NodeWorker;\n\nexport default class WASMAudioDecoderWorker extends getWorker() {\n  constructor(options, name, Decoder, EmscriptenWASM) {\n    if (!WASMAudioDecoderCommon.modules) new WASMAudioDecoderCommon();\n\n    let source = WASMAudioDecoderCommon.modules.get(Decoder);\n\n    if (!source) {\n      let type = \"text/javascript\",\n        isNode,\n        webworkerSourceCode =\n          \"'use strict';\" +\n          // dependencies need to be manually resolved when stringifying this function\n          `(${((_Decoder, _WASMAudioDecoderCommon, _EmscriptenWASM) => {\n            // We're in a Web Worker\n\n            // setup Promise that will be resolved once the WebAssembly Module is received\n            let decoder,\n              moduleResolve,\n              modulePromise = new Promise((resolve) => {\n                moduleResolve = resolve;\n              });\n\n            self.onmessage = ({ data: { id, command, data } }) => {\n              let messagePromise = modulePromise,\n                messagePayload = { id },\n                transferList;\n\n              if (command === \"init\") {\n                Object.defineProperties(_Decoder, {\n                  WASMAudioDecoderCommon: { value: _WASMAudioDecoderCommon },\n                  EmscriptenWASM: { value: _EmscriptenWASM },\n                  module: { value: data.module },\n                  isWebWorker: { value: true },\n                });\n\n                decoder = new _Decoder(data.options);\n                moduleResolve();\n              } else if (command === \"free\") {\n                decoder.free();\n              } else if (command === \"ready\") {\n                messagePromise = messagePromise.then(() => decoder.ready);\n              } else if (command === \"reset\") {\n                messagePromise = messagePromise.then(() => decoder.reset());\n              } else {\n                // \"decode\":\n                // \"decodeFrame\":\n                // \"decodeFrames\":\n                Object.assign(\n                  messagePayload,\n                  decoder[command](\n                    // detach buffers\n                    Array.isArray(data)\n                      ? data.map((data) => new Uint8Array(data))\n                      : new Uint8Array(data),\n                  ),\n                );\n                // The \"transferList\" parameter transfers ownership of channel data to main thread,\n                // which avoids copying memory.\n                transferList = messagePayload.channelData\n                  ? messagePayload.channelData.map((channel) => channel.buffer)\n                  : [];\n              }\n\n              messagePromise.then(() =>\n                self.postMessage(messagePayload, transferList),\n              );\n            };\n          }).toString()})(${Decoder}, ${WASMAudioDecoderCommon}, ${EmscriptenWASM})`;\n\n      try {\n        isNode = typeof process.versions.node !== \"undefined\";\n      } catch {}\n\n      source = isNode\n        ? `data:${type};base64,${Buffer.from(webworkerSourceCode).toString(\n            \"base64\",\n          )}`\n        : URL.createObjectURL(new Blob([webworkerSourceCode], { type }));\n\n      WASMAudioDecoderCommon.modules.set(Decoder, source);\n    }\n\n    super(source, { name });\n\n    this._id = Number.MIN_SAFE_INTEGER;\n    this._enqueuedOperations = new Map();\n\n    this.onmessage = ({ data }) => {\n      const { id, ...rest } = data;\n      this._enqueuedOperations.get(id)(rest);\n      this._enqueuedOperations.delete(id);\n    };\n\n    new EmscriptenWASM(WASMAudioDecoderCommon).getModule().then((module) => {\n      this.postToDecoder(\"init\", { module, options });\n    });\n  }\n\n  async postToDecoder(command, data) {\n    return new Promise((resolve) => {\n      this.postMessage({\n        command,\n        id: this._id,\n        data,\n      });\n\n      this._enqueuedOperations.set(this._id++, resolve);\n    });\n  }\n\n  get ready() {\n    return this.postToDecoder(\"ready\");\n  }\n\n  async free() {\n    await this.postToDecoder(\"free\").finally(() => {\n      this.terminate();\n    });\n  }\n\n  async reset() {\n    await this.postToDecoder(\"reset\");\n  }\n}\n","export const assignNames = (Class, name) => {\n  Object.defineProperty(Class, \"name\", { value: name });\n};\n"],"names":["WASMAudioDecoderCommon","uint8Array","Uint8Array","float32Array","Float32Array","modules","Object","defineProperties","value","WeakMap","setModule","Ref","module","set","Promise","resolve","getModule","wasmString","get","WebAssembly","compile","wasm","inflateDynEncodeString","then","data","concatFloat32","buffers","length","ret","i","offset","getDecodedAudio","errors","channelData","samplesDecoded","sampleRate","bitDepth","getDecodedAudioMultiChannel","input","channelsDecoded","j","channel","push","source","puffString","String","raw","instantiate","exports","instanceExports","Map","entries","puff","memory","dataArray","heapView","DataView","heapPos","sourceLength","sourceLengthPtr","setInt32","sourcePtr","destLengthPtr","byteLength","slice","getInt32","defineProperty","this","enumerable","_wasm","getOutputChannels","outputData","output","allocateTypedArray","len","TypedArray","setPointer","ptr","malloc","BYTES_PER_ELEMENT","_pointers","add","buf","HEAP","free","forEach","clear","codeToString","characters","heap","character","fromCharCode","apply","addError","message","frameLength","frameNumber","inputBytes","outputSamples","_EmscriptenWASM","_module","Set","ready","WASMAudioDecoderWorker","globalThis","Worker","getWorker","constructor","options","name","Decoder","EmscriptenWASM","isNode","type","webworkerSourceCode","_Decoder","_WASMAudioDecoderCommon","decoder","moduleResolve","modulePromise","self","onmessage","id","command","transferList","messagePromise","messagePayload","isWebWorker","reset","assign","Array","isArray","map","buffer","postMessage","toString","process","versions","node","Buffer","from","URL","createObjectURL","Blob","super","_id","Number","MIN_SAFE_INTEGER","_enqueuedOperations","rest","delete","postToDecoder","finally","terminate","assignNames","Class"],"sourceRoot":""}