moshi-ui / assets /decoderWorker.min-DI6rkCrP.js
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(function(){"use strict";var e=typeof e<"u"?e:{};(function(t,r){typeof exports=="object"&&typeof module=="object"?module.exports=r():typeof define=="function"&&define.amd?define([],r):typeof exports=="object"?exports.DecoderWorker=r():t.DecoderWorker=r()})(typeof self<"u"?self:void 0,function(){return function(t){var r={};function n(i){if(r[i])return r[i].exports;var o=r[i]={i,l:!1,exports:{}};return t[i].call(o.exports,o,o.exports,n),o.l=!0,o.exports}return n.m=t,n.c=r,n.d=function(i,o,c){n.o(i,o)||Object.defineProperty(i,o,{enumerable:!0,get:c})},n.r=function(i){typeof Symbol<"u"&&Symbol.toStringTag&&Object.defineProperty(i,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(i,"__esModule",{value:!0})},n.t=function(i,o){if(1&o&&(i=n(i)),8&o||4&o&&typeof i=="object"&&i&&i.__esModule)return i;var c=Object.create(null);if(n.r(c),Object.defineProperty(c,"default",{enumerable:!0,value:i}),2&o&&typeof i!="string")for(var f in i)n.d(c,f,function(a){return i[a]}.bind(null,f));return c},n.n=function(i){var o=i&&i.__esModule?function(){return i.default}:function(){return i};return n.d(o,"a",o),o},n.o=function(i,o){return Object.prototype.hasOwnProperty.call(i,o)},n.p="",n(n.s=0)}([function(t,r,n){(function(i){var o,c,f=new Promise(function(s){c=s});i.onmessage=function(s){f.then(function(){switch(s.data.command){case"decode":o&&o.decode(s.data.pages);break;case"done":o&&(o.sendLastBuffer(),i.close());break;case"init":o=new a(s.data,e)}})};var a=function(s,u){if(!u)throw new Error("Module with exports required to initialize a decoder instance");this.mainReady=f,this.config=Object.assign({bufferLength:4096,decoderSampleRate:48e3,outputBufferSampleRate:48e3,resampleQuality:3},s),this._opus_decoder_create=u._opus_decoder_create,this._opus_decoder_destroy=u._opus_decoder_destroy,this._speex_resampler_process_interleaved_float=u._speex_resampler_process_interleaved_float,this._speex_resampler_init=u._speex_resampler_init,this._speex_resampler_destroy=u._speex_resampler_destroy,this._opus_decode_float=u._opus_decode_float,this._free=u._free,this._malloc=u._malloc,this.HEAPU8=u.HEAPU8,this.HEAP32=u.HEAP32,this.HEAPF32=u.HEAPF32,this.outputBuffers=[]};a.prototype.decode=function(s){var u=new DataView(s.buffer);this.getPageBoundaries(u).map(function(p){var _=u.getUint8(p+5,!0),B=u.getUint32(p+18,!0);if(2&_&&(this.numberOfChannels=u.getUint8(p+37,!0),this.init()),B>1){for(var M=u.getUint8(p+26,!0),T=p+27+M,j=0;j<M;j++){var D=u.getUint8(p+27+j,!0);if(this.decoderBuffer.set(s.subarray(T,T+=D),this.decoderBufferIndex),this.decoderBufferIndex+=D,D<255){var J=this._opus_decode_float(this.decoder,this.decoderBufferPointer,this.decoderBufferIndex,this.decoderOutputPointer,this.decoderOutputMaxLength,0),Z=Math.ceil(J*this.config.outputBufferSampleRate/this.config.decoderSampleRate);this.HEAP32[this.decoderOutputLengthPointer>>2]=J,this.HEAP32[this.resampleOutputLengthPointer>>2]=Z,this._speex_resampler_process_interleaved_float(this.resampler,this.decoderOutputPointer,this.decoderOutputLengthPointer,this.resampleOutputBufferPointer,this.resampleOutputLengthPointer),this.sendToOutputBuffers(this.HEAPF32.subarray(this.resampleOutputBufferPointer>>2,(this.resampleOutputBufferPointer>>2)+Z*this.numberOfChannels)),this.decoderBufferIndex=0}}4&_&&this.sendLastBuffer()}},this)},a.prototype.getPageBoundaries=function(s){for(var u=[],p=0;p<s.byteLength-4;p++)s.getUint32(p,!0)==1399285583&&u.push(p);return u},a.prototype.init=function(){this.resetOutputBuffers(),this.initCodec(),this.initResampler()},a.prototype.initCodec=function(){this.decoder&&(this._opus_decoder_destroy(this.decoder),this._free(this.decoderBufferPointer),this._free(this.decoderOutputLengthPointer),this._free(this.decoderOutputPointer));var s=this._malloc(4);this.decoder=this._opus_decoder_create(this.config.decoderSampleRate,this.numberOfChannels,s),this._free(s),this.decoderBufferMaxLength=4e3,this.decoderBufferPointer=this._malloc(this.decoderBufferMaxLength),this.decoderBuffer=this.HEAPU8.subarray(this.decoderBufferPointer,this.decoderBufferPointer+this.decoderBufferMaxLength),this.decoderBufferIndex=0,this.decoderOutputLengthPointer=this._malloc(4),this.decoderOutputMaxLength=this.config.decoderSampleRate*this.numberOfChannels*120/1e3,this.decoderOutputPointer=this._malloc(4*this.decoderOutputMaxLength)},a.prototype.initResampler=function(){this.resampler&&(this._speex_resampler_destroy(this.resampler),this._free(this.resampleOutputLengthPointer),this._free(this.resampleOutputBufferPointer));var s=this._malloc(4);this.resampler=this._speex_resampler_init(this.numberOfChannels,this.config.decoderSampleRate,this.config.outputBufferSampleRate,this.config.resampleQuality,s),this._free(s),this.resampleOutputLengthPointer=this._malloc(4),this.resampleOutputMaxLength=Math.ceil(this.decoderOutputMaxLength*this.config.outputBufferSampleRate/this.config.decoderSampleRate),this.resampleOutputBufferPointer=this._malloc(4*this.resampleOutputMaxLength)},a.prototype.resetOutputBuffers=function(){this.outputBuffers=[],this.outputBufferArrayBuffers=[],this.outputBufferIndex=0;for(var s=0;s<this.numberOfChannels;s++)this.outputBuffers.push(new Float32Array(this.config.bufferLength)),this.outputBufferArrayBuffers.push(this.outputBuffers[s].buffer)},a.prototype.sendLastBuffer=function(){this.sendToOutputBuffers(new Float32Array((this.config.bufferLength-this.outputBufferIndex)*this.numberOfChannels)),i.postMessage(null)},a.prototype.sendToOutputBuffers=function(s){for(var u=0,p=s.length/this.numberOfChannels;u<p;){var _=Math.min(p-u,this.config.bufferLength-this.outputBufferIndex);if(this.numberOfChannels===1)this.outputBuffers[0].set(s.subarray(u,u+_),this.outputBufferIndex);else for(var B=0;B<_;B++)this.outputBuffers.forEach(function(M,T){M[this.outputBufferIndex+B]=s[(u+B)*this.numberOfChannels+T]},this);u+=_,this.outputBufferIndex+=_,this.outputBufferIndex==this.config.bufferLength&&(i.postMessage(this.outputBuffers,this.outputBufferArrayBuffers),this.resetOutputBuffers())}},e||(e={}),e.mainReady=f,e.OggOpusDecoder=a,e.onRuntimeInitialized=c,t.exports=e}).call(this,n(1))},function(t,r){var n;n=function(){return this}();try{n=n||new Function("return this")()}catch{typeof window=="object"&&(n=window)}t.exports=n}])});var O={},h;for(h in e)e.hasOwnProperty(h)&&(O[h]=e[h]);var W=typeof window=="object",w=typeof importScripts=="function",$=typeof process=="object"&&typeof process.versions=="object"&&typeof process.versions.node=="string",l="";function 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