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share/public_html/static/music_inc/music_inc_module.js  view on Meta::CPAN

//import {default as NetworkDrFlac} from './music_drflac_module.js'
import {default as NetworkDrFlac} from './music_drflac_module.cache.js'
// times in seconds
const AQMaxDecodedTime = 20;    // maximum time decoded, but not queued
const AQStartLookahead = 0.100; // minimum time to buffer before starting playback
const AQLookahead = 5;          // buffer as long as less than AQLookahead is buffered

let MainAudioContext;
let GainNode;
let AQID = -1;
let AudioQueue = [];
let Tracks_HEAD;
let Tracks_TAIL;
let Tracks_QueueCurrent;
let FACAbortController = new AbortController();
let SBAR_UPDATING = 0;
let NWDRFLAC;

function DeclareGlobalFunc(name, value) {
    Object.defineProperty(window, name, {
        value: value,
        configurable: false,
        writable: false
    });
};

class Mutex {
    constructor() {
      this._locking = Promise.resolve();
      this._locked = false;
    }
  
    isLocked() {
      return this._locked;
    }
  
    lock() {
      this._locked = true;
      let unlockNext;
      let willLock = new Promise(resolve => unlockNext = resolve);
      willLock.then(() => this._locked = false);
      let willUnlock = this._locking.then(() => unlockNext);
      this._locking = this._locking.then(() => willLock);
      return willUnlock;
    }
}

function CreateAudioContext(options) {
    let mycontext = (window.hasWebKit) ? new webkitAudioContext(options) : (typeof AudioContext != "undefined") ? new AudioContext(options) : null;
    GainNode = mycontext.createGain();
    GainNode.connect(mycontext.destination);
    return mycontext;
}

let lastMALtime;
function MainAudioLoop() {
    if(lastMALtime) {
        const MALDelta = MainAudioContext.currentTime - lastMALtime;
        if((MALDelta) > 0.100) {
            console.log('MAL called super late ' + MALDelta);
        }
    }
    lastMALtime= MainAudioContext.currentTime; 
    AQ_clean();