janus_camera_switch.js

  switchVideoinput: function(mediaDeviceId, callbacks){

      // stop & close previous local peer
      this.videoRoomPlugin.hangup(true);

      // request new stream
      var constraints = {
        audio: true,
        video: {deviceId: {exact: mediaDeviceId}}
      };
      //

      var self = this;

      navigator.mediaDevices.getUserMedia(constraints)
      .then(function(stream) {

        setTimeout(function(){

          self.createOffer(true, !self.isOnlyAudio, stream, {
            success: function() {
              if(typeof callbacks.success === 'function'){
                Utils.safeCallbackCall(callbacks.success);
              }
            },
            error: function(error){
              if(typeof callbacks.error === 'function'){
                Utils.safeCallbackCall(callbacks.error, error);
              }
            }
          });

        }, 1000);

      })
      .catch(function(error) {
        if(typeof callbacks.error === 'function'){
          Utils.safeCallbackCall(callbacks.error, error);
        }
      });
}