retroarch-web Core form

• libretro-cores form [https://buildbot.libretro.com/]

  https://buildbot.libretro.com/nightly/emscripten/

• other-cores

  • [https://github.com/BinBashBanana/webretro]
  • [https://www.emulatorjs.com] this site cores have crc hash key each hours change!.

Module.js

• NengeDisk

  replace FS.mout

  
  let disk = new NengeDisk(Moudule),path='saves';
  FS.createPath('/', path, !0, !0);
  FS.mount(disk, {}, path);

  await disk.mountReady(); //wait indexDB file => FS file;

  
  > if FS file changge, this file will auto save in indexDB.

• RetroArch Sound Bug in Mobile.

  replace js

  replace(
  /_RWebAudioInit\(latency\)\s?\{/,
  '_RWebAudioInit(latency){Module.latency=latency;'
  ).replace(
  /function\s?_RWebAudioStart\(\)\s?\{/,
  'function _RWebAudioStart() {if(RA.context && RA.context.state != "running") return Module.mobileAudioRun(RA);'
  ).replace(
  /_RWebAudioWrite\(\)\s?\{/,
  '_RWebAudioWrite(buf,size){if(RA.context&&RA.context.state != "running")return Module.mobileAudioRun(RA);\n'
  );
  {
  mobileAudioRun(RA) {
  let M = Module;
  M.pauseMainLoop && M.pauseMainLoop();
  //show some UI to user
  //some event like click  to run==>mobileAudioRest(RA);
  };
  mobileAudioRest(RA) {
  let M = Module;
  RA = RA || M.RA;
  if (RA.context) RA.context.resume();
  if (!RA.context || RA.context.state != 'running') {
  RA.bufIndex = 0;
  RA.bufOffset = 0
  var ac = window["AudioContext"] || window["webkitAudioContext"];
  if (RA.context) {
  RA.context.close();
  delete RA.context;
  }
  RA.context = new ac;
  RA.numBuffers = M.latency * RA.context.sampleRate / (1e3 * RA.BUFFER_SIZE) | 0;
  if (RA.numBuffers < 2) RA.numBuffers = 2;
  for (var i = 0; i < RA.numBuffers; i++) {
  RA.buffers[i] = RA.context.createBuffer(2, RA.BUFFER_SIZE, RA.context.sampleRate);
  RA.buffers[i].endTime = 0
  }
  RA.nonblock = false;
  RA.startTime = 0;
  RA.context.createGain();
  RA.setStartTime();
  RA.context.resume();
  }
  M.resumeMainLoop();
  }
  }

common.js

• indexDB info in NengeStart.js

  T.DB_NAME = 'RetroArch_WEB';
  T.LibStore = 'data-libjs';
  T.version = 5;
  T.DB_STORE_MAP = {
      'data-rooms': {},
      'data-info': { 'system': false },
      'data-system': {},
      'data-bios': { 'system': false },
      'retroarch': { 'timestamp': false },
      'userdata': { 'timestamp': false },
      'data-libjs': {},
  };

• IndexDB use guide

  let system = Nenge.getStore('data-system');
  await system.get('gambatte_libretro.zip');
  //output {contents:{xxx.js:Uint8Array},system:'gb',filesize: ,filetype: ,timestamp: ,type}
  //if has 'contents' and filesize>0x6400000:gambatte_libretro.zip,gambatte_libretro.zip-part-1,gambatte_libretro.zip-part-2=>contents0,contents1,contents2=>contents
  await system.data('gambatte_libretro.zip');
  //output {xxx.js:Uint8Array}
  system.remove('gambatte_libretro.zip');
  //indexdb remove  gambatte_libretro.zip
  system.put('gambatte_libretro.zip',1);
  //indexdb add  gambatte_libretro.zip=>1
  //if filesize>0x6400000 will add gambatte_libretro.zip,gambatte_libretro.zip-part-1,gambatte_libretro.zip-part-2
  system.setData('gambatte_libretro.zip',1);
  //indexdb add  gambatte_libretro.zip=>{contents:1,timestamp:}
  await system.keys();
  //output ['gambatte_libretro.zip']
  await system.all();
  //output {'gambatte_libretro.zip':{data...}}
  await system.cursor('system',1);
  //output {'gambatte_libretro.zip':{system:'gb'}}
  await system.cursor('system',1,IDBKeyRange.only('gb'));
  //output {'gambatte_libretro.zip':{system:'gb'}}
  await system.cursor('system',1,IDBKeyRange.only('gba'));
  //output {}

• FetchItem

  this is support post

  
  Nenge.FetchItem({
  url:'gambatte_libretro.zip',//core file
  unpack:true,//if a zip/7z/rar4
  key:'gambatte_libretro.zip',//if null this name will be href name;
  store:'data-system',//if set this,will save or load on IndexDB
  dataOption:{
  system:'gb'//indexDB add save option data
  },
  /* other option */
  get:{k:1},//if set, url=>gambatte_libretro.zip?k=1
  post:Nenge.I.post({'key':1} | [FormElment][FormData] ),//post method
  json:{},//if post a json File Body
  /* end option */
  success(contents){
  if(contents instanceof Uint8Array){
  //base return 
  }else{
  //if a  zip/7z/rar4 and open upack=true
  Nenge.I.toArr(contents,entry=>{

          });
      }
  },
  error(text){
  },
  process(status){
      // 0% => 100% download
  }

  }); Nenge.FetchItem({ url:'xx.json', type:'json', success(json){ }, error(text){ }, process(status){ // 0% => 100% download } });

• ajax

  this not have indexdb,only use to get page content

  
  Nenge.ajax({
  url:'xx.json',
  type:'json',
  success(json){
  },
  error(text){
  },
  process(status){
  // 0% => 100% download
  },
  PostProcess(status){
  // 0% => 100% upload
  }
  });