renderer.js

   1 const ipcRenderer = require('electron').ipcRenderer
   2 const {desktopCapturer} = require('electron')
   3
   4 let mediaStream
   5
   6 function getDefaultStream(event) {
   7   console.log('getDefaultStream')
   8   desktopCapturer.getSources({types: ['window', 'screen']}, (error, sources) => {
   9     if (error) {
  10       console.log(error)
  11       return
  12     }
  13     for (let i = 0; i < sources.length; ++i) {
  14       if (sources[i].name === 'Screen 1') {
  15         navigator.mediaDevices.getUserMedia({
  16           audio: false,
  17           video: {
  18             mandatory: {
  19               chromeMediaSource: 'desktop',
  20               chromeMediaSourceId: sources[i].id,
  21               minWidth: 1280,
  22               maxWidth: 1280,
  23               minHeight: 720,
  24               maxHeight: 720
  25             }
  26           }
  27         }).then((stream) => {
  28           mediaStream = stream
  29           console.log('sending defaultStreamResponse' + stream)
  30           event.sender.send('defaultStreamResponse', stream)
  31         })
  32       }
  33     }
  34     return
  35   })
  36 }
  37
  38 ipcRenderer.on('defaultStreamRequest', (event, message) => {
  39   console.log('defaultStreamRequest received, grabbing media stream for screen1')
  40   getDefaultStream(event)
  41 })