mirror of
https://github.com/jech/galene.git
synced 2024-11-22 16:45:58 +01:00
6669a93ae3
We used to set high-quality audio by default for screenshare, but that makes the video blurry under bad network conditions. Obey the hqaudio setting for all streams.
3896 lines
103 KiB
JavaScript
3896 lines
103 KiB
JavaScript
// Copyright (c) 2020 by Juliusz Chroboczek.
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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'use strict';
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/** @type {string} */
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let group;
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/** @type {ServerConnection} */
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let serverConnection;
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/** @type {Object} */
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let groupStatus = {};
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/** @type {string} */
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let token = null;
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/**
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* @typedef {Object} settings
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* @property {boolean} [localMute]
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* @property {string} [video]
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* @property {string} [audio]
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* @property {string} [simulcast]
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* @property {string} [send]
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* @property {string} [request]
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* @property {boolean} [activityDetection]
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* @property {Array.<number>} [resolution]
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* @property {boolean} [mirrorView]
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* @property {boolean} [blackboardMode]
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* @property {string} [filter]
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* @property {boolean} [preprocessing]
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* @property {boolean} [hqaudio]
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* @property {boolean} [forceRelay]
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*/
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/** @type{settings} */
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let fallbackSettings = null;
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/**
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* @param {settings} settings
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*/
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function storeSettings(settings) {
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try {
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window.sessionStorage.setItem('settings', JSON.stringify(settings));
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fallbackSettings = null;
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} catch(e) {
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console.warn("Couldn't store settings:", e);
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fallbackSettings = settings;
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}
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}
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/**
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* This always returns a dictionary.
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*
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* @returns {settings}
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*/
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function getSettings() {
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/** @type {settings} */
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let settings;
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try {
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let json = window.sessionStorage.getItem('settings');
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settings = JSON.parse(json);
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} catch(e) {
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console.warn("Couldn't retrieve settings:", e);
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settings = fallbackSettings;
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}
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return settings || {};
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}
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/**
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* @param {settings} settings
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*/
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function updateSettings(settings) {
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let s = getSettings();
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for(let key in settings)
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s[key] = settings[key];
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storeSettings(s);
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}
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/**
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* @param {string} key
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* @param {any} value
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*/
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function updateSetting(key, value) {
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let s = {};
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s[key] = value;
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updateSettings(s);
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}
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/**
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* @param {string} key
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*/
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function delSetting(key) {
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let s = getSettings();
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if(!(key in s))
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return;
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delete(s[key]);
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storeSettings(s);
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}
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/**
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* @param {string} id
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*/
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function getSelectElement(id) {
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let elt = document.getElementById(id);
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if(!elt || !(elt instanceof HTMLSelectElement))
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throw new Error(`Couldn't find ${id}`);
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return elt;
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}
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/**
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* @param {string} id
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*/
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function getInputElement(id) {
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let elt = document.getElementById(id);
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if(!elt || !(elt instanceof HTMLInputElement))
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throw new Error(`Couldn't find ${id}`);
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return elt;
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}
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/**
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* @param {string} id
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*/
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function getButtonElement(id) {
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let elt = document.getElementById(id);
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if(!elt || !(elt instanceof HTMLButtonElement))
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throw new Error(`Couldn't find ${id}`);
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return elt;
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}
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function reflectSettings() {
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let settings = getSettings();
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let store = false;
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setLocalMute(settings.localMute);
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let videoselect = getSelectElement('videoselect');
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if(!settings.hasOwnProperty('video') ||
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!selectOptionAvailable(videoselect, settings.video)) {
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settings.video = selectOptionDefault(videoselect);
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store = true;
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}
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videoselect.value = settings.video;
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let audioselect = getSelectElement('audioselect');
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if(!settings.hasOwnProperty('audio') ||
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!selectOptionAvailable(audioselect, settings.audio)) {
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settings.audio = selectOptionDefault(audioselect);
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store = true;
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}
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audioselect.value = settings.audio;
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if(settings.hasOwnProperty('filter')) {
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getSelectElement('filterselect').value = settings.filter;
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} else {
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let s = getSelectElement('filterselect').value;
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if(s) {
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settings.filter = s;
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store = true;
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}
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}
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if(settings.hasOwnProperty('request')) {
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getSelectElement('requestselect').value = settings.request;
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} else {
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settings.request = getSelectElement('requestselect').value;
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store = true;
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}
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if(settings.hasOwnProperty('send')) {
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getSelectElement('sendselect').value = settings.send;
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} else {
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settings.send = getSelectElement('sendselect').value;
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store = true;
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}
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if(settings.hasOwnProperty('simulcast')) {
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getSelectElement('simulcastselect').value = settings.simulcast
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} else {
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settings.simulcast = getSelectElement('simulcastselect').value;
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store = true;
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}
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if(settings.hasOwnProperty('blackboardMode')) {
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getInputElement('blackboardbox').checked = settings.blackboardMode;
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} else {
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settings.blackboardMode = getInputElement('blackboardbox').checked;
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store = true;
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}
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if(settings.hasOwnProperty('mirrorView')) {
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getInputElement('mirrorbox').checked = settings.mirrorView;
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} else {
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settings.mirrorView = getInputElement('mirrorbox').checked;
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store = true;
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}
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if(settings.hasOwnProperty('activityDetection')) {
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getInputElement('activitybox').checked = settings.activityDetection;
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} else {
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settings.activityDetection = getInputElement('activitybox').checked;
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store = true;
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}
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if(settings.hasOwnProperty('preprocessing')) {
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getInputElement('preprocessingbox').checked = settings.preprocessing;
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} else {
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settings.preprocessing = getInputElement('preprocessingbox').checked;
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store = true;
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}
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if(settings.hasOwnProperty('hqaudio')) {
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getInputElement('hqaudiobox').checked = settings.hqaudio;
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} else {
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settings.hqaudio = getInputElement('hqaudiobox').checked;
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store = true;
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}
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if(store)
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storeSettings(settings);
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}
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function isMobileLayout() {
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if (window.matchMedia('only screen and (max-width: 1024px)').matches)
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return true;
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return false;
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}
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/**
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* @param {boolean} [force]
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*/
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function hideVideo(force) {
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let mediadiv = document.getElementById('peers');
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if(mediadiv.childElementCount > 0 && !force)
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return;
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setVisibility('video-container', false);
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scheduleReconsiderDownRate();
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}
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function showVideo() {
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let hasmedia = document.getElementById('peers').childElementCount > 0;
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if(isMobileLayout()) {
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setVisibility('show-video', false);
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setVisibility('collapse-video', hasmedia);
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}
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setVisibility('video-container', hasmedia);
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scheduleReconsiderDownRate();
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}
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/**
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* @param{boolean} connected
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*/
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function setConnected(connected) {
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let userbox = document.getElementById('profile');
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let connectionbox = document.getElementById('login-container');
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if(connected) {
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clearChat();
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userbox.classList.remove('invisible');
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connectionbox.classList.add('invisible');
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displayUsername();
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window.onresize = function(e) {
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scheduleReconsiderDownRate();
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}
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} else {
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userbox.classList.add('invisible');
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connectionbox.classList.remove('invisible');
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displayError('Disconnected', 'error');
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hideVideo();
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window.onresize = null;
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}
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}
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/**
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* @this {ServerConnection}
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* @param {string} [username]
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*/
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async function gotConnected(username) {
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let credentials;
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if(token) {
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credentials = {
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type: 'token',
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token: token,
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};
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token = null;
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} else {
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setConnected(true);
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username = getInputElement('username').value.trim();
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let pw = getInputElement('password').value;
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getInputElement('password').value = '';
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if(!groupStatus.authServer)
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credentials = pw;
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else
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credentials = {
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type: 'authServer',
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authServer: groupStatus.authServer,
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location: location.href,
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password: pw,
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};
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}
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try {
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await this.join(group, username, credentials);
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} catch(e) {
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console.error(e);
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displayError(e);
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serverConnection.close();
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}
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}
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/**
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* @this {ServerConnection}
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*/
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function onPeerConnection() {
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if(!getSettings().forceRelay)
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return null;
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let old = this.rtcConfiguration;
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/** @type {RTCConfiguration} */
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let conf = {};
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for(let key in old)
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conf[key] = old[key];
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conf.iceTransportPolicy = 'relay';
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return conf;
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}
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/**
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* @this {ServerConnection}
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* @param {number} code
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* @param {string} reason
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*/
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function gotClose(code, reason) {
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closeUpMedia();
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setConnected(false);
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if(code != 1000) {
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console.warn('Socket close', code, reason);
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}
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}
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/**
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* @this {ServerConnection}
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* @param {Stream} c
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*/
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function gotDownStream(c) {
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c.onclose = function(replace) {
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if(!replace)
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delMedia(c.localId);
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};
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c.onerror = function(e) {
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console.error(e);
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displayError(e);
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};
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c.ondowntrack = function(track, transceiver, label, stream) {
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setMedia(c, false);
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};
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c.onnegotiationcompleted = function() {
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resetMedia(c);
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}
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c.onstatus = function(status) {
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setMediaStatus(c);
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};
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c.onstats = gotDownStats;
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if(getSettings().activityDetection)
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c.setStatsInterval(activityDetectionInterval);
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setMedia(c, false);
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}
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// Store current browser viewport height in css variable
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function setViewportHeight() {
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document.documentElement.style.setProperty(
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'--vh', `${window.innerHeight/100}px`,
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);
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showVideo();
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// Ajust video component size
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resizePeers();
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}
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// On resize and orientation change, we update viewport height
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addEventListener('resize', setViewportHeight);
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addEventListener('orientationchange', setViewportHeight);
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getButtonElement('presentbutton').onclick = async function(e) {
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e.preventDefault();
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let button = this;
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if(!(button instanceof HTMLButtonElement))
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throw new Error('Unexpected type for this.');
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// there's a potential race condition here: the user might click the
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// button a second time before the stream is set up and the button hidden.
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button.disabled = true;
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try {
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let id = findUpMedia('camera');
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if(!id)
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await addLocalMedia();
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} finally {
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button.disabled = false;
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}
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};
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getButtonElement('unpresentbutton').onclick = function(e) {
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e.preventDefault();
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closeUpMedia('camera');
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resizePeers();
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};
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/**
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* @param {string} id
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* @param {boolean} visible
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*/
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function setVisibility(id, visible) {
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let elt = document.getElementById(id);
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if(visible)
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elt.classList.remove('invisible');
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else
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elt.classList.add('invisible');
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}
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function setButtonsVisibility() {
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let connected = serverConnection && serverConnection.socket;
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let permissions = serverConnection.permissions;
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let present = permissions.indexOf('present') >= 0;
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let local = !!findUpMedia('camera');
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let canWebrtc = !(typeof RTCPeerConnection === 'undefined');
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let mediacount = document.getElementById('peers').childElementCount;
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let mobilelayout = isMobileLayout();
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// don't allow multiple presentations
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setVisibility('presentbutton', canWebrtc && present && !local);
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setVisibility('unpresentbutton', local);
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setVisibility('mutebutton', !connected || present);
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// allow multiple shared documents
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setVisibility('sharebutton', canWebrtc && present &&
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('getDisplayMedia' in navigator.mediaDevices));
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setVisibility('mediaoptions', present);
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setVisibility('sendform', present);
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setVisibility('simulcastform', present);
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setVisibility('collapse-video', mediacount && mobilelayout);
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}
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/**
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* @param {boolean} mute
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* @param {boolean} [reflect]
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*/
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function setLocalMute(mute, reflect) {
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muteLocalTracks(mute);
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let button = document.getElementById('mutebutton');
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let icon = button.querySelector("span .fas");
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if(mute){
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icon.classList.add('fa-microphone-slash');
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icon.classList.remove('fa-microphone');
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button.classList.add('muted');
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} else {
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icon.classList.remove('fa-microphone-slash');
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icon.classList.add('fa-microphone');
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button.classList.remove('muted');
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}
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if(reflect)
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updateSettings({localMute: mute});
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}
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getSelectElement('videoselect').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLSelectElement))
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throw new Error('Unexpected type for this');
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updateSettings({video: this.value});
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replaceCameraStream();
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};
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getSelectElement('audioselect').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLSelectElement))
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throw new Error('Unexpected type for this');
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updateSettings({audio: this.value});
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replaceCameraStream();
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};
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getInputElement('mirrorbox').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLInputElement))
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throw new Error('Unexpected type for this');
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updateSettings({mirrorView: this.checked});
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// no need to reopen the camera
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replaceUpStreams('camera');
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};
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getInputElement('blackboardbox').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLInputElement))
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throw new Error('Unexpected type for this');
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updateSettings({blackboardMode: this.checked});
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replaceCameraStream();
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};
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getInputElement('preprocessingbox').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLInputElement))
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throw new Error('Unexpected type for this');
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updateSettings({preprocessing: this.checked});
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replaceCameraStream();
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};
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getInputElement('hqaudiobox').onchange = function(e) {
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e.preventDefault();
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if(!(this instanceof HTMLInputElement))
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throw new Error('Unexpected type for this');
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updateSettings({hqaudio: this.checked});
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replaceCameraStream();
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};
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document.getElementById('mutebutton').onclick = function(e) {
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e.preventDefault();
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let localMute = getSettings().localMute;
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localMute = !localMute;
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setLocalMute(localMute, true);
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};
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document.getElementById('sharebutton').onclick = function(e) {
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e.preventDefault();
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addShareMedia();
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};
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getSelectElement('filterselect').onchange = async function(e) {
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if(!(this instanceof HTMLSelectElement))
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throw new Error('Unexpected type for this');
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updateSettings({filter: this.value});
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let c = findUpMedia('camera');
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if(c) {
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let filter = (this.value && filters[this.value]) || null;
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if(filter)
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c.userdata.filterDefinition = filter;
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else
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delete c.userdata.filterDefinition;
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replaceUpStream(c);
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}
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};
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|
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/** @returns {number} */
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function getMaxVideoThroughput() {
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let v = getSettings().send;
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switch(v) {
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case 'lowest':
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return 150000;
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case 'low':
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return 300000;
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case 'normal':
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return 700000;
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case 'unlimited':
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return null;
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default:
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console.error('Unknown video quality', v);
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return 700000;
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}
|
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}
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getSelectElement('sendselect').onchange = async function(e) {
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if(!(this instanceof HTMLSelectElement))
|
|
throw new Error('Unexpected type for this');
|
|
updateSettings({send: this.value});
|
|
await reconsiderSendParameters();
|
|
};
|
|
|
|
getSelectElement('simulcastselect').onchange = async function(e) {
|
|
if(!(this instanceof HTMLSelectElement))
|
|
throw new Error('Unexpected type for this');
|
|
updateSettings({simulcast: this.value});
|
|
await reconsiderSendParameters();
|
|
};
|
|
|
|
/**
|
|
* @param {string} what
|
|
* @returns {Object<string,Array<string>>}
|
|
*/
|
|
|
|
function mapRequest(what) {
|
|
switch(what) {
|
|
case '':
|
|
return {};
|
|
break;
|
|
case 'audio':
|
|
return {'': ['audio']};
|
|
break;
|
|
case 'screenshare-low':
|
|
return {screenshare: ['audio','video-low'], '': ['audio']};
|
|
break;
|
|
case 'screenshare':
|
|
return {screenshare: ['audio','video'], '': ['audio']};
|
|
break;
|
|
case 'everything-low':
|
|
return {'': ['audio','video-low']};
|
|
break;
|
|
case 'everything':
|
|
return {'': ['audio','video']}
|
|
break;
|
|
default:
|
|
throw new Error(`Unknown value ${what} in request`);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} what
|
|
* @param {string} label
|
|
* @returns {Array<string>}
|
|
*/
|
|
|
|
function mapRequestLabel(what, label) {
|
|
let r = mapRequest(what);
|
|
if(label in r)
|
|
return r[label];
|
|
else
|
|
return r[''];
|
|
}
|
|
|
|
|
|
getSelectElement('requestselect').onchange = function(e) {
|
|
e.preventDefault();
|
|
if(!(this instanceof HTMLSelectElement))
|
|
throw new Error('Unexpected type for this');
|
|
updateSettings({request: this.value});
|
|
serverConnection.request(mapRequest(this.value));
|
|
reconsiderDownRate();
|
|
};
|
|
|
|
const activityDetectionInterval = 200;
|
|
const activityDetectionPeriod = 700;
|
|
const activityDetectionThreshold = 0.2;
|
|
|
|
getInputElement('activitybox').onchange = function(e) {
|
|
if(!(this instanceof HTMLInputElement))
|
|
throw new Error('Unexpected type for this');
|
|
updateSettings({activityDetection: this.checked});
|
|
for(let id in serverConnection.down) {
|
|
let c = serverConnection.down[id];
|
|
if(this.checked)
|
|
c.setStatsInterval(activityDetectionInterval);
|
|
else {
|
|
c.setStatsInterval(0);
|
|
setActive(c, false);
|
|
}
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @this {Stream}
|
|
* @param {Object<string,any>} stats
|
|
*/
|
|
function gotUpStats(stats) {
|
|
let c = this;
|
|
|
|
let values = [];
|
|
|
|
for(let id in stats) {
|
|
if(stats[id] && stats[id]['outbound-rtp']) {
|
|
let rate = stats[id]['outbound-rtp'].rate;
|
|
if(typeof rate === 'number') {
|
|
values.push(rate);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(values.length === 0) {
|
|
setLabel(c, '');
|
|
} else {
|
|
values.sort((x,y) => x - y);
|
|
setLabel(c, values
|
|
.map(x => Math.round(x / 1000).toString())
|
|
.reduce((x, y) => x + '+' + y));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
* @param {boolean} value
|
|
*/
|
|
function setActive(c, value) {
|
|
let peer = document.getElementById('peer-' + c.localId);
|
|
if(value)
|
|
peer.classList.add('peer-active');
|
|
else
|
|
peer.classList.remove('peer-active');
|
|
}
|
|
|
|
/**
|
|
* @this {Stream}
|
|
* @param {Object<string,any>} stats
|
|
*/
|
|
function gotDownStats(stats) {
|
|
if(!getInputElement('activitybox').checked)
|
|
return;
|
|
|
|
let c = this;
|
|
|
|
let maxEnergy = 0;
|
|
|
|
c.pc.getReceivers().forEach(r => {
|
|
let tid = r.track && r.track.id;
|
|
let s = tid && stats[tid];
|
|
let energy = s && s['track'] && s['track'].audioEnergy;
|
|
if(typeof energy === 'number')
|
|
maxEnergy = Math.max(maxEnergy, energy);
|
|
});
|
|
|
|
// totalAudioEnergy is defined as the integral of the square of the
|
|
// volume, so square the threshold.
|
|
if(maxEnergy > activityDetectionThreshold * activityDetectionThreshold) {
|
|
c.userdata.lastVoiceActivity = Date.now();
|
|
setActive(c, true);
|
|
} else {
|
|
let last = c.userdata.lastVoiceActivity;
|
|
if(!last || Date.now() - last > activityDetectionPeriod)
|
|
setActive(c, false);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {HTMLSelectElement} select
|
|
* @param {string} label
|
|
* @param {string} [value]
|
|
*/
|
|
function addSelectOption(select, label, value) {
|
|
if(!value)
|
|
value = label;
|
|
for(let i = 0; i < select.children.length; i++) {
|
|
let child = select.children[i];
|
|
if(!(child instanceof HTMLOptionElement)) {
|
|
console.warn('Unexpected select child');
|
|
continue;
|
|
}
|
|
if(child.value === value) {
|
|
if(child.label !== label) {
|
|
child.label = label;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
let option = document.createElement('option');
|
|
option.value = value;
|
|
option.textContent = label;
|
|
select.appendChild(option);
|
|
}
|
|
|
|
/**
|
|
* @param {HTMLSelectElement} select
|
|
* @param {string} value
|
|
*/
|
|
function selectOptionAvailable(select, value) {
|
|
let children = select.children;
|
|
for(let i = 0; i < children.length; i++) {
|
|
let child = select.children[i];
|
|
if(!(child instanceof HTMLOptionElement)) {
|
|
console.warn('Unexpected select child');
|
|
continue;
|
|
}
|
|
if(child.value === value)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param {HTMLSelectElement} select
|
|
* @returns {string}
|
|
*/
|
|
function selectOptionDefault(select) {
|
|
/* First non-empty option. */
|
|
for(let i = 0; i < select.children.length; i++) {
|
|
let child = select.children[i];
|
|
if(!(child instanceof HTMLOptionElement)) {
|
|
console.warn('Unexpected select child');
|
|
continue;
|
|
}
|
|
if(child.value)
|
|
return child.value;
|
|
}
|
|
/* The empty option is always available. */
|
|
return '';
|
|
}
|
|
|
|
/* media names might not be available before we call getDisplayMedia. So
|
|
we call this twice, the second time to update the menu with user-readable
|
|
labels. */
|
|
/** @type {boolean} */
|
|
let mediaChoicesDone = false;
|
|
|
|
/**
|
|
* @param{boolean} done
|
|
*/
|
|
async function setMediaChoices(done) {
|
|
if(mediaChoicesDone)
|
|
return;
|
|
|
|
let devices = [];
|
|
try {
|
|
devices = await navigator.mediaDevices.enumerateDevices();
|
|
} catch(e) {
|
|
console.error(e);
|
|
return;
|
|
}
|
|
|
|
let cn = 1, mn = 1;
|
|
|
|
devices.forEach(d => {
|
|
let label = d.label;
|
|
if(d.kind === 'videoinput') {
|
|
if(!label)
|
|
label = `Camera ${cn}`;
|
|
addSelectOption(getSelectElement('videoselect'),
|
|
label, d.deviceId);
|
|
cn++;
|
|
} else if(d.kind === 'audioinput') {
|
|
if(!label)
|
|
label = `Microphone ${mn}`;
|
|
addSelectOption(getSelectElement('audioselect'),
|
|
label, d.deviceId);
|
|
mn++;
|
|
}
|
|
});
|
|
|
|
mediaChoicesDone = done;
|
|
}
|
|
|
|
|
|
/**
|
|
* @param {string} [localId]
|
|
*/
|
|
function newUpStream(localId) {
|
|
let c = serverConnection.newUpStream(localId);
|
|
c.onstatus = function(status) {
|
|
setMediaStatus(c);
|
|
};
|
|
c.onerror = function(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
};
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* Sets an up stream's video throughput and simulcast parameters.
|
|
*
|
|
* @param {Stream} c
|
|
* @param {number} bps
|
|
* @param {boolean} simulcast
|
|
*/
|
|
async function setSendParameters(c, bps, simulcast) {
|
|
if(!c.up)
|
|
throw new Error('Setting throughput of down stream');
|
|
let senders = c.pc.getSenders();
|
|
for(let i = 0; i < senders.length; i++) {
|
|
let s = senders[i];
|
|
if(!s.track || s.track.kind !== 'video')
|
|
continue;
|
|
let p = s.getParameters();
|
|
if((!p.encodings ||
|
|
!simulcast && p.encodings.length != 1) ||
|
|
(simulcast && p.encodings.length != 2)) {
|
|
await replaceUpStream(c);
|
|
return;
|
|
}
|
|
p.encodings.forEach(e => {
|
|
if(!e.rid || e.rid === 'h')
|
|
e.maxBitrate = bps || unlimitedRate;
|
|
});
|
|
await s.setParameters(p);
|
|
}
|
|
}
|
|
|
|
let reconsiderParametersTimer = null;
|
|
|
|
/**
|
|
* Sets the send parameters for all up streams.
|
|
*/
|
|
async function reconsiderSendParameters() {
|
|
cancelReconsiderParameters();
|
|
let t = getMaxVideoThroughput();
|
|
let s = doSimulcast();
|
|
let promises = [];
|
|
for(let id in serverConnection.up) {
|
|
let c = serverConnection.up[id];
|
|
promises.push(setSendParameters(c, t, s));
|
|
}
|
|
await Promise.all(promises);
|
|
}
|
|
|
|
/**
|
|
* Schedules a call to reconsiderSendParameters after a delay.
|
|
* The delay avoids excessive flapping.
|
|
*/
|
|
function scheduleReconsiderParameters() {
|
|
cancelReconsiderParameters();
|
|
reconsiderParametersTimer =
|
|
setTimeout(reconsiderSendParameters, 10000 + Math.random() * 10000);
|
|
}
|
|
|
|
function cancelReconsiderParameters() {
|
|
if(reconsiderParametersTimer) {
|
|
clearTimeout(reconsiderParametersTimer);
|
|
reconsiderParametersTimer = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @typedef {Object} filterDefinition
|
|
* @property {string} [description]
|
|
* @property {string} [contextType]
|
|
* @property {Object} [contextAttributes]
|
|
* @property {(this: Filter, ctx: RenderingContext) => void} [init]
|
|
* @property {(this: Filter) => void} [cleanup]
|
|
* @property {(this: Filter, src: CanvasImageSource, width: number, height: number, ctx: RenderingContext) => boolean} f
|
|
*/
|
|
|
|
/**
|
|
* @param {MediaStream} stream
|
|
* @param {filterDefinition} definition
|
|
* @constructor
|
|
*/
|
|
function Filter(stream, definition) {
|
|
/** @ts-ignore */
|
|
if(!HTMLCanvasElement.prototype.captureStream) {
|
|
throw new Error('Filters are not supported on this platform');
|
|
}
|
|
|
|
/** @type {MediaStream} */
|
|
this.inputStream = stream;
|
|
/** @type {filterDefinition} */
|
|
this.definition = definition;
|
|
/** @type {number} */
|
|
this.frameRate = 30;
|
|
/** @type {HTMLVideoElement} */
|
|
this.video = document.createElement('video');
|
|
/** @type {HTMLCanvasElement} */
|
|
this.canvas = document.createElement('canvas');
|
|
/** @type {any} */
|
|
this.context = this.canvas.getContext(
|
|
definition.contextType || '2d',
|
|
definition.contextAttributes || null);
|
|
/** @type {MediaStream} */
|
|
this.captureStream = null;
|
|
/** @type {MediaStream} */
|
|
this.outputStream = null;
|
|
/** @type {number} */
|
|
this.timer = null;
|
|
/** @type {number} */
|
|
this.count = 0;
|
|
/** @type {boolean} */
|
|
this.fixedFramerate = false;
|
|
/** @type {Object} */
|
|
this.userdata = {}
|
|
/** @type {MediaStream} */
|
|
this.captureStream = this.canvas.captureStream(0);
|
|
|
|
/** @ts-ignore */
|
|
if(!this.captureStream.getTracks()[0].requestFrame) {
|
|
console.warn('captureFrame not supported, using fixed framerate');
|
|
/** @ts-ignore */
|
|
this.captureStream = this.canvas.captureStream(this.frameRate);
|
|
this.fixedFramerate = true;
|
|
}
|
|
|
|
this.outputStream = new MediaStream();
|
|
this.outputStream.addTrack(this.captureStream.getTracks()[0]);
|
|
this.inputStream.getTracks().forEach(t => {
|
|
t.onended = e => this.stop();
|
|
if(t.kind != 'video')
|
|
this.outputStream.addTrack(t);
|
|
});
|
|
this.video.srcObject = stream;
|
|
this.video.muted = true;
|
|
this.video.play();
|
|
if(this.definition.init)
|
|
this.definition.init.call(this, this.context);
|
|
this.timer = setInterval(() => this.draw(), 1000 / this.frameRate);
|
|
}
|
|
|
|
Filter.prototype.draw = function() {
|
|
// check framerate every 30 frames
|
|
if((this.count % 30) === 0) {
|
|
let frameRate = 0;
|
|
this.inputStream.getTracks().forEach(t => {
|
|
if(t.kind === 'video') {
|
|
let r = t.getSettings().frameRate;
|
|
if(r)
|
|
frameRate = r;
|
|
}
|
|
});
|
|
if(frameRate && frameRate != this.frameRate) {
|
|
clearInterval(this.timer);
|
|
this.timer = setInterval(() => this.draw(), 1000 / this.frameRate);
|
|
}
|
|
}
|
|
|
|
let ok = false;
|
|
try {
|
|
ok = this.definition.f.call(this, this.video,
|
|
this.video.videoWidth,
|
|
this.video.videoHeight,
|
|
this.context);
|
|
} catch(e) {
|
|
console.error(e);
|
|
}
|
|
if(ok && !this.fixedFramerate) {
|
|
/** @ts-ignore */
|
|
this.captureStream.getTracks()[0].requestFrame();
|
|
}
|
|
|
|
this.count++;
|
|
};
|
|
|
|
Filter.prototype.stop = function() {
|
|
if(!this.timer)
|
|
return;
|
|
this.captureStream.getTracks()[0].stop();
|
|
clearInterval(this.timer);
|
|
this.timer = null;
|
|
if(this.definition.cleanup)
|
|
this.definition.cleanup.call(this);
|
|
};
|
|
|
|
/**
|
|
* Removes any filter set on c.
|
|
*
|
|
* @param {Stream} c
|
|
*/
|
|
function removeFilter(c) {
|
|
let old = c.userdata.filter;
|
|
if(!old)
|
|
return;
|
|
|
|
if(!(old instanceof Filter))
|
|
throw new Error('userdata.filter is not a filter');
|
|
|
|
c.setStream(old.inputStream);
|
|
old.stop();
|
|
c.userdata.filter = null;
|
|
}
|
|
|
|
/**
|
|
* Sets the filter described by c.userdata.filterDefinition on c.
|
|
*
|
|
* @param {Stream} c
|
|
*/
|
|
function setFilter(c) {
|
|
removeFilter(c);
|
|
|
|
if(!c.userdata.filterDefinition)
|
|
return;
|
|
|
|
let filter = new Filter(c.stream, c.userdata.filterDefinition);
|
|
c.setStream(filter.outputStream);
|
|
c.userdata.filter = filter;
|
|
}
|
|
|
|
/**
|
|
* @type {Object.<string,filterDefinition>}
|
|
*/
|
|
let filters = {
|
|
'mirror-h': {
|
|
description: "Horizontal mirror",
|
|
f: function(src, width, height, ctx) {
|
|
if(!(ctx instanceof CanvasRenderingContext2D))
|
|
throw new Error('bad context type');
|
|
if(ctx.canvas.width !== width || ctx.canvas.height !== height) {
|
|
ctx.canvas.width = width;
|
|
ctx.canvas.height = height;
|
|
}
|
|
ctx.scale(-1, 1);
|
|
ctx.drawImage(src, -width, 0);
|
|
ctx.resetTransform();
|
|
return true;
|
|
},
|
|
},
|
|
'mirror-v': {
|
|
description: "Vertical mirror",
|
|
f: function(src, width, height, ctx) {
|
|
if(!(ctx instanceof CanvasRenderingContext2D))
|
|
throw new Error('bad context type');
|
|
if(ctx.canvas.width !== width || ctx.canvas.height !== height) {
|
|
ctx.canvas.width = width;
|
|
ctx.canvas.height = height;
|
|
}
|
|
ctx.scale(1, -1);
|
|
ctx.drawImage(src, 0, -height);
|
|
ctx.resetTransform();
|
|
return true;
|
|
},
|
|
},
|
|
};
|
|
|
|
function addFilters() {
|
|
for(let name in filters) {
|
|
let f = filters[name];
|
|
let d = f.description || name;
|
|
addSelectOption(getSelectElement('filterselect'), d, name);
|
|
}
|
|
}
|
|
|
|
function isSafari() {
|
|
let ua = navigator.userAgent.toLowerCase();
|
|
return ua.indexOf('safari') >= 0 && ua.indexOf('chrome') < 0;
|
|
}
|
|
|
|
const unlimitedRate = 1000000000;
|
|
const simulcastRate = 100000;
|
|
const hqAudioRate = 128000;
|
|
|
|
/**
|
|
* Decide whether we want to send simulcast.
|
|
*
|
|
* @returns {boolean}
|
|
*/
|
|
function doSimulcast() {
|
|
switch(getSettings().simulcast) {
|
|
case 'on':
|
|
return true;
|
|
case 'off':
|
|
return false;
|
|
default:
|
|
let count = 0;
|
|
for(let n in serverConnection.users) {
|
|
if(!serverConnection.users[n].permissions["system"]) {
|
|
count++;
|
|
if(count > 2)
|
|
break;
|
|
}
|
|
}
|
|
if(count <= 2)
|
|
return false;
|
|
let bps = getMaxVideoThroughput();
|
|
return bps <= 0 || bps >= 2 * simulcastRate;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets up c to send the given stream. Some extra parameters are stored
|
|
* in c.userdata.
|
|
*
|
|
* @param {Stream} c
|
|
* @param {MediaStream} stream
|
|
*/
|
|
|
|
function setUpStream(c, stream) {
|
|
if(c.stream != null)
|
|
throw new Error("Setting nonempty stream");
|
|
|
|
c.setStream(stream);
|
|
|
|
try {
|
|
setFilter(c);
|
|
} catch(e) {
|
|
displayWarning("Couldn't set filter: " + e);
|
|
}
|
|
|
|
c.onclose = replace => {
|
|
removeFilter(c);
|
|
if(!replace) {
|
|
stopStream(c.stream);
|
|
if(c.userdata.onclose)
|
|
c.userdata.onclose.call(c);
|
|
delMedia(c.localId);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {MediaStreamTrack} t
|
|
*/
|
|
function addUpTrack(t) {
|
|
let settings = getSettings();
|
|
if(c.label === 'camera') {
|
|
if(t.kind == 'audio') {
|
|
if(settings.localMute)
|
|
t.enabled = false;
|
|
} else if(t.kind == 'video') {
|
|
if(settings.blackboardMode) {
|
|
t.contentHint = 'detail';
|
|
}
|
|
}
|
|
}
|
|
t.onended = e => {
|
|
stream.onaddtrack = null;
|
|
stream.onremovetrack = null;
|
|
c.close();
|
|
};
|
|
|
|
let encodings = [];
|
|
let simulcast = doSimulcast();
|
|
if(t.kind === 'video') {
|
|
let bps = getMaxVideoThroughput();
|
|
// Firefox doesn't like us setting the RID if we're not
|
|
// simulcasting.
|
|
if(simulcast) {
|
|
encodings.push({
|
|
rid: 'h',
|
|
maxBitrate: bps || unlimitedRate,
|
|
});
|
|
encodings.push({
|
|
rid: 'l',
|
|
scaleResolutionDownBy: 2,
|
|
maxBitrate: simulcastRate,
|
|
});
|
|
} else {
|
|
encodings.push({
|
|
maxBitrate: bps || unlimitedRate,
|
|
});
|
|
}
|
|
} else {
|
|
if(settings.hqaudio) {
|
|
encodings.push({
|
|
maxBitrate: hqAudioRate,
|
|
});
|
|
}
|
|
}
|
|
let tr = c.pc.addTransceiver(t, {
|
|
direction: 'sendonly',
|
|
streams: [stream],
|
|
sendEncodings: encodings,
|
|
});
|
|
|
|
// Firefox workaround
|
|
function match(a, b) {
|
|
if(!a || !b)
|
|
return false;
|
|
if(a.length !== b.length)
|
|
return false;
|
|
for(let i = 0; i < a.length; i++) {
|
|
if(a.maxBitrate !== b.maxBitrate)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
let p = tr.sender.getParameters();
|
|
if(!p || !match(p.encodings, encodings)) {
|
|
p.encodings = encodings;
|
|
tr.sender.setParameters(p);
|
|
}
|
|
}
|
|
|
|
// c.stream might be different from stream if there's a filter
|
|
c.stream.getTracks().forEach(addUpTrack);
|
|
|
|
stream.onaddtrack = function(e) {
|
|
addUpTrack(e.track);
|
|
};
|
|
|
|
stream.onremovetrack = function(e) {
|
|
let t = e.track;
|
|
|
|
/** @type {RTCRtpSender} */
|
|
let sender;
|
|
c.pc.getSenders().forEach(s => {
|
|
if(s.track === t)
|
|
sender = s;
|
|
});
|
|
if(sender) {
|
|
c.pc.removeTrack(sender);
|
|
} else {
|
|
console.warn('Removing unknown track');
|
|
}
|
|
|
|
let found = false;
|
|
c.pc.getSenders().forEach(s => {
|
|
if(s.track)
|
|
found = true;
|
|
});
|
|
if(!found) {
|
|
stream.onaddtrack = null;
|
|
stream.onremovetrack = null;
|
|
c.close();
|
|
}
|
|
};
|
|
|
|
c.onstats = gotUpStats;
|
|
c.setStatsInterval(2000);
|
|
}
|
|
|
|
/**
|
|
* Replaces c with a freshly created stream, duplicating any relevant
|
|
* parameters in c.userdata.
|
|
*
|
|
* @param {Stream} c
|
|
* @returns {Promise<Stream>}
|
|
*/
|
|
async function replaceUpStream(c) {
|
|
removeFilter(c);
|
|
let cn = newUpStream(c.localId);
|
|
cn.label = c.label;
|
|
if(c.userdata.filterDefinition)
|
|
cn.userdata.filterDefinition = c.userdata.filterDefinition;
|
|
if(c.userdata.onclose)
|
|
cn.userdata.onclose = c.userdata.onclose;
|
|
let media = /** @type{HTMLVideoElement} */
|
|
(document.getElementById('media-' + c.localId));
|
|
setUpStream(cn, c.stream);
|
|
await setMedia(cn, true,
|
|
cn.label == 'camera' && getSettings().mirrorView,
|
|
cn.label == 'video' && media);
|
|
return cn;
|
|
}
|
|
|
|
/**
|
|
* Replaces all up streams with the given label. If label is null,
|
|
* replaces all up stream.
|
|
*
|
|
* @param {string} label
|
|
*/
|
|
async function replaceUpStreams(label) {
|
|
let promises = [];
|
|
for(let id in serverConnection.up) {
|
|
let c = serverConnection.up[id];
|
|
if(label && c.label !== label)
|
|
continue
|
|
promises.push(replaceUpStream(c));
|
|
}
|
|
await Promise.all(promises);
|
|
}
|
|
|
|
/**
|
|
* Closes and reopens the camera then replaces the camera stream.
|
|
*/
|
|
function replaceCameraStream() {
|
|
let c = findUpMedia('camera');
|
|
if(c)
|
|
addLocalMedia(c.localId);
|
|
}
|
|
|
|
/**
|
|
* @param {string} [localId]
|
|
*/
|
|
async function addLocalMedia(localId) {
|
|
let settings = getSettings();
|
|
|
|
let audio = settings.audio ? {deviceId: settings.audio} : false;
|
|
let video = settings.video ? {deviceId: settings.video} : false;
|
|
|
|
if(video) {
|
|
let resolution = settings.resolution;
|
|
if(resolution) {
|
|
video.width = { ideal: resolution[0] };
|
|
video.height = { ideal: resolution[1] };
|
|
} else if(settings.blackboardMode) {
|
|
video.width = { min: 640, ideal: 1920 };
|
|
video.height = { min: 400, ideal: 1080 };
|
|
}
|
|
}
|
|
|
|
if(audio) {
|
|
if(!settings.preprocessing) {
|
|
audio.echoCancellation = false;
|
|
audio.noiseSuppression = false;
|
|
audio.autoGainControl = false;
|
|
}
|
|
}
|
|
|
|
let old = serverConnection.findByLocalId(localId);
|
|
if(old) {
|
|
// make sure that the camera is released before we try to reopen it
|
|
removeFilter(old);
|
|
stopStream(old.stream);
|
|
}
|
|
|
|
let constraints = {audio: audio, video: video};
|
|
/** @type {MediaStream} */
|
|
let stream = null;
|
|
try {
|
|
stream = await navigator.mediaDevices.getUserMedia(constraints);
|
|
} catch(e) {
|
|
displayError(e);
|
|
return;
|
|
}
|
|
|
|
setMediaChoices(true);
|
|
|
|
let c;
|
|
|
|
try {
|
|
c = newUpStream(localId);
|
|
} catch(e) {
|
|
console.log(e);
|
|
displayError(e);
|
|
return;
|
|
}
|
|
|
|
c.label = 'camera';
|
|
|
|
if(settings.filter) {
|
|
let filter = filters[settings.filter];
|
|
if(filter)
|
|
c.userdata.filterDefinition = filter;
|
|
else
|
|
displayWarning(`Unknown filter ${settings.filter}`);
|
|
}
|
|
|
|
setUpStream(c, stream);
|
|
await setMedia(c, true, settings.mirrorView);
|
|
setButtonsVisibility();
|
|
}
|
|
|
|
let safariScreenshareDone = false;
|
|
|
|
async function addShareMedia() {
|
|
/** @type {MediaStream} */
|
|
let stream = null;
|
|
try {
|
|
if(!('getDisplayMedia' in navigator.mediaDevices))
|
|
throw new Error('Your browser does not support screen sharing');
|
|
stream = await navigator.mediaDevices.getDisplayMedia({
|
|
video: true,
|
|
audio: true,
|
|
});
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
return;
|
|
}
|
|
|
|
if(!safariScreenshareDone) {
|
|
if(isSafari())
|
|
displayWarning('Screen sharing under Safari is experimental. ' +
|
|
'Please use a different browser if possible.');
|
|
safariScreenshareDone = true;
|
|
}
|
|
|
|
let c = newUpStream();
|
|
c.label = 'screenshare';
|
|
setUpStream(c, stream);
|
|
await setMedia(c, true);
|
|
setButtonsVisibility();
|
|
}
|
|
|
|
/**
|
|
* @param {File} file
|
|
*/
|
|
async function addFileMedia(file) {
|
|
let url = URL.createObjectURL(file);
|
|
let video = document.createElement('video');
|
|
video.src = url;
|
|
video.controls = true;
|
|
let stream;
|
|
/** @ts-ignore */
|
|
if(video.captureStream)
|
|
/** @ts-ignore */
|
|
stream = video.captureStream();
|
|
/** @ts-ignore */
|
|
else if(video.mozCaptureStream)
|
|
/** @ts-ignore */
|
|
stream = video.mozCaptureStream();
|
|
else {
|
|
displayError("This browser doesn't support file playback");
|
|
return;
|
|
}
|
|
|
|
let c = newUpStream();
|
|
c.label = 'video';
|
|
c.userdata.onclose = function() {
|
|
let media = /** @type{HTMLVideoElement} */
|
|
(document.getElementById('media-' + this.localId));
|
|
if(media && media.src) {
|
|
URL.revokeObjectURL(media.src);
|
|
media.src = null;
|
|
}
|
|
};
|
|
await setUpStream(c, stream);
|
|
|
|
let presenting = !!findUpMedia('camera');
|
|
let muted = getSettings().localMute;
|
|
if(presenting && !muted) {
|
|
setLocalMute(true, true);
|
|
displayWarning('You have been muted');
|
|
}
|
|
|
|
await setMedia(c, true, false, video);
|
|
c.userdata.play = true;
|
|
setButtonsVisibility();
|
|
}
|
|
|
|
/**
|
|
* @param {MediaStream} s
|
|
*/
|
|
function stopStream(s) {
|
|
s.getTracks().forEach(t => {
|
|
try {
|
|
t.stop();
|
|
} catch(e) {
|
|
console.warn(e);
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* closeUpMedia closes all up connections with the given label. If label
|
|
* is null, it closes all up connections.
|
|
*
|
|
* @param {string} [label]
|
|
*/
|
|
function closeUpMedia(label) {
|
|
for(let id in serverConnection.up) {
|
|
let c = serverConnection.up[id];
|
|
if(label && c.label !== label)
|
|
continue
|
|
c.close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} label
|
|
* @returns {Stream}
|
|
*/
|
|
function findUpMedia(label) {
|
|
for(let id in serverConnection.up) {
|
|
let c = serverConnection.up[id]
|
|
if(c.label === label)
|
|
return c;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} mute
|
|
*/
|
|
function muteLocalTracks(mute) {
|
|
if(!serverConnection)
|
|
return;
|
|
for(let id in serverConnection.up) {
|
|
let c = serverConnection.up[id];
|
|
if(c.label === 'camera') {
|
|
let stream = c.stream;
|
|
stream.getTracks().forEach(t => {
|
|
if(t.kind === 'audio') {
|
|
t.enabled = !mute;
|
|
}
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {boolean} force
|
|
* @param {boolean} [value]
|
|
*/
|
|
function forceDownRate(id, force, value) {
|
|
let c = serverConnection.down[id];
|
|
if(!c)
|
|
throw new Error("Unknown down stream");
|
|
if('requested' in c.userdata) {
|
|
if(force)
|
|
c.userdata.requested.force = !!value;
|
|
else
|
|
delete(c.userdata.requested.force);
|
|
} else {
|
|
if(force)
|
|
c.userdata.requested = {force: value};
|
|
}
|
|
reconsiderDownRate(id);
|
|
}
|
|
|
|
/**
|
|
* Maps 'video' to 'video-low'. Returns null if nothing changed.
|
|
*
|
|
* @param {string[]} requested
|
|
* @returns {string[]}
|
|
*/
|
|
function mapVideoToLow(requested) {
|
|
let result = [];
|
|
let found = false;
|
|
for(let i = 0; i < requested.length; i++) {
|
|
let r = requested[i];
|
|
if(r === 'video') {
|
|
r = 'video-low';
|
|
found = true;
|
|
}
|
|
result.push(r);
|
|
}
|
|
if(!found)
|
|
return null;
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Reconsider the video track requested for a given down stream.
|
|
*
|
|
* @param {string} [id] - the id of the track to reconsider, all if null.
|
|
*/
|
|
function reconsiderDownRate(id) {
|
|
if(!serverConnection)
|
|
return;
|
|
if(!id) {
|
|
for(let id in serverConnection.down) {
|
|
reconsiderDownRate(id);
|
|
}
|
|
return;
|
|
}
|
|
let c = serverConnection.down[id];
|
|
if(!c)
|
|
throw new Error("Unknown down stream");
|
|
let normalrequest = mapRequestLabel(getSettings().request, c.label);
|
|
|
|
let requestlow = mapVideoToLow(normalrequest);
|
|
if(requestlow === null)
|
|
return;
|
|
|
|
let old = c.userdata.requested;
|
|
let low = false;
|
|
if(old && ('force' in old)) {
|
|
low = old.force;
|
|
} else {
|
|
let media = /** @type {HTMLVideoElement} */
|
|
(document.getElementById('media-' + c.localId));
|
|
if(!media)
|
|
throw new Error("No media for stream");
|
|
let w = media.scrollWidth;
|
|
let h = media.scrollHeight;
|
|
if(w && h && w * h <= 320 * 240) {
|
|
low = true;
|
|
}
|
|
}
|
|
|
|
if(low !== !!(old && old.low)) {
|
|
if('requested' in c.userdata)
|
|
c.userdata.requested.low = low;
|
|
else
|
|
c.userdata.requested = {low: low};
|
|
c.request(low ? requestlow : null);
|
|
}
|
|
}
|
|
|
|
let reconsiderDownRateTimer = null;
|
|
|
|
/**
|
|
* Schedules reconsiderDownRate() to be run later. The delay avoids too
|
|
* much recomputations when resizing the window.
|
|
*/
|
|
function scheduleReconsiderDownRate() {
|
|
if(reconsiderDownRateTimer)
|
|
return;
|
|
reconsiderDownRateTimer =
|
|
setTimeout(() => {
|
|
reconsiderDownRateTimer = null;
|
|
reconsiderDownRate();
|
|
}, 200);
|
|
}
|
|
|
|
/**
|
|
* setMedia adds a new media element corresponding to stream c.
|
|
*
|
|
* @param {Stream} c
|
|
* @param {boolean} isUp
|
|
* - indicates whether the stream goes in the up direction
|
|
* @param {boolean} [mirror]
|
|
* - whether to mirror the video
|
|
* @param {HTMLVideoElement} [video]
|
|
* - the video element to add. If null, a new element with custom
|
|
* controls will be created.
|
|
*/
|
|
async function setMedia(c, isUp, mirror, video) {
|
|
let peersdiv = document.getElementById('peers');
|
|
|
|
let div = document.getElementById('peer-' + c.localId);
|
|
if(!div) {
|
|
div = document.createElement('div');
|
|
div.id = 'peer-' + c.localId;
|
|
div.classList.add('peer');
|
|
peersdiv.appendChild(div);
|
|
}
|
|
|
|
let media = /** @type {HTMLVideoElement} */
|
|
(document.getElementById('media-' + c.localId));
|
|
if(!media) {
|
|
if(video) {
|
|
media = video;
|
|
} else {
|
|
media = document.createElement('video');
|
|
if(isUp)
|
|
media.muted = true;
|
|
}
|
|
|
|
media.classList.add('media');
|
|
media.autoplay = true;
|
|
media.playsInline = true;
|
|
media.id = 'media-' + c.localId;
|
|
div.appendChild(media);
|
|
addCustomControls(media, div, c, !!video);
|
|
}
|
|
|
|
if(mirror)
|
|
media.classList.add('mirror');
|
|
else
|
|
media.classList.remove('mirror');
|
|
|
|
if(!video && media.srcObject !== c.stream)
|
|
media.srcObject = c.stream;
|
|
|
|
if(!isUp) {
|
|
media.onfullscreenchange = function(e) {
|
|
forceDownRate(c.id, document.fullscreenElement === media, false);
|
|
}
|
|
}
|
|
|
|
let label = document.getElementById('label-' + c.localId);
|
|
if(!label) {
|
|
label = document.createElement('div');
|
|
label.id = 'label-' + c.localId;
|
|
label.classList.add('label');
|
|
div.appendChild(label);
|
|
}
|
|
|
|
setLabel(c);
|
|
setMediaStatus(c);
|
|
|
|
showVideo();
|
|
resizePeers();
|
|
|
|
if(!isUp && isSafari() && !findUpMedia('camera')) {
|
|
// Safari doesn't allow autoplay unless the user has granted media access
|
|
try {
|
|
let stream = await navigator.mediaDevices.getUserMedia({audio: true});
|
|
stream.getTracks().forEach(t => t.stop());
|
|
} catch(e) {
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* resetMedia resets the source stream of the media element associated
|
|
* with c. This has the side-effect of resetting any frozen frames.
|
|
*
|
|
* @param {Stream} c
|
|
*/
|
|
function resetMedia(c) {
|
|
let media = /** @type {HTMLVideoElement} */
|
|
(document.getElementById('media-' + c.localId));
|
|
if(!media) {
|
|
console.error("Resetting unknown media element")
|
|
return;
|
|
}
|
|
media.srcObject = media.srcObject;
|
|
}
|
|
|
|
/**
|
|
* @param {Element} elt
|
|
*/
|
|
function cloneHTMLElement(elt) {
|
|
if(!(elt instanceof HTMLElement))
|
|
throw new Error('Unexpected element type');
|
|
return /** @type{HTMLElement} */(elt.cloneNode(true));
|
|
}
|
|
|
|
/**
|
|
* @param {HTMLVideoElement} media
|
|
* @param {HTMLElement} container
|
|
* @param {Stream} c
|
|
*/
|
|
function addCustomControls(media, container, c, toponly) {
|
|
if(!toponly && !document.getElementById('controls-' + c.localId)) {
|
|
media.controls = false;
|
|
|
|
let template =
|
|
document.getElementById('videocontrols-template').firstElementChild;
|
|
let controls = cloneHTMLElement(template);
|
|
controls.id = 'controls-' + c.localId;
|
|
|
|
let volume = getVideoButton(controls, 'volume');
|
|
|
|
if(c.up && c.label === 'camera') {
|
|
volume.remove();
|
|
} else {
|
|
setVolumeButton(media.muted,
|
|
getVideoButton(controls, "volume-mute"),
|
|
getVideoButton(controls, "volume-slider"));
|
|
}
|
|
container.appendChild(controls);
|
|
}
|
|
|
|
if(c.up && !document.getElementById('topcontrols-' + c.localId)) {
|
|
let toptemplate =
|
|
document.getElementById('topvideocontrols-template').firstElementChild;
|
|
let topcontrols = cloneHTMLElement(toptemplate);
|
|
topcontrols.id = 'topcontrols-' + c.localId;
|
|
container.appendChild(topcontrols);
|
|
}
|
|
registerControlHandlers(c.localId, media, container);
|
|
}
|
|
|
|
/**
|
|
* @param {HTMLElement} container
|
|
* @param {string} name
|
|
*/
|
|
function getVideoButton(container, name) {
|
|
return /** @type {HTMLElement} */(container.getElementsByClassName(name)[0]);
|
|
}
|
|
|
|
/**
|
|
* @param {boolean} muted
|
|
* @param {HTMLElement} button
|
|
* @param {HTMLElement} slider
|
|
*/
|
|
function setVolumeButton(muted, button, slider) {
|
|
if(!muted) {
|
|
button.classList.remove("fa-volume-mute");
|
|
button.classList.add("fa-volume-up");
|
|
} else {
|
|
button.classList.remove("fa-volume-up");
|
|
button.classList.add("fa-volume-mute");
|
|
}
|
|
|
|
if(!(slider instanceof HTMLInputElement))
|
|
throw new Error("Couldn't find volume slider");
|
|
slider.disabled = muted;
|
|
}
|
|
|
|
/**
|
|
* @param {string} localId
|
|
* @param {HTMLVideoElement} media
|
|
* @param {HTMLElement} container
|
|
*/
|
|
function registerControlHandlers(localId, media, container) {
|
|
let play = getVideoButton(container, 'video-play');
|
|
if(play) {
|
|
play.onclick = function(event) {
|
|
event.preventDefault();
|
|
media.play();
|
|
};
|
|
}
|
|
|
|
let stop = getVideoButton(container, 'video-stop');
|
|
if(stop) {
|
|
stop.onclick = function(event) {
|
|
event.preventDefault();
|
|
try {
|
|
let c = serverConnection.findByLocalId(localId);
|
|
if(!c)
|
|
throw new Error('Closing unknown stream');
|
|
c.close();
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
}
|
|
};
|
|
}
|
|
|
|
let volume = getVideoButton(container, 'volume');
|
|
if (volume) {
|
|
volume.onclick = function(event) {
|
|
let target = /** @type{HTMLElement} */(event.target);
|
|
if(!target.classList.contains('volume-mute'))
|
|
// if click on volume slider, do nothing
|
|
return;
|
|
event.preventDefault();
|
|
media.muted = !media.muted;
|
|
setVolumeButton(media.muted, target,
|
|
getVideoButton(volume, "volume-slider"));
|
|
};
|
|
volume.oninput = function() {
|
|
let slider = /** @type{HTMLInputElement} */
|
|
(getVideoButton(volume, "volume-slider"));
|
|
media.volume = parseInt(slider.value, 10)/100;
|
|
};
|
|
}
|
|
|
|
let pip = getVideoButton(container, 'pip');
|
|
if(pip) {
|
|
if(HTMLVideoElement.prototype.requestPictureInPicture) {
|
|
pip.onclick = function(e) {
|
|
e.preventDefault();
|
|
if(media.requestPictureInPicture) {
|
|
media.requestPictureInPicture();
|
|
} else {
|
|
displayWarning('Picture in Picture not supported.');
|
|
}
|
|
};
|
|
} else {
|
|
pip.style.display = 'none';
|
|
}
|
|
}
|
|
|
|
let fs = getVideoButton(container, 'fullscreen');
|
|
if(fs) {
|
|
if(HTMLVideoElement.prototype.requestFullscreen ||
|
|
/** @ts-ignore */
|
|
HTMLVideoElement.prototype.webkitRequestFullscreen) {
|
|
fs.onclick = function(e) {
|
|
e.preventDefault();
|
|
if(media.requestFullscreen) {
|
|
media.requestFullscreen();
|
|
/** @ts-ignore */
|
|
} else if(media.webkitRequestFullscreen) {
|
|
/** @ts-ignore */
|
|
media.webkitRequestFullscreen();
|
|
} else {
|
|
displayWarning('Full screen not supported!');
|
|
}
|
|
};
|
|
} else {
|
|
fs.style.display = 'none';
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} localId
|
|
*/
|
|
function delMedia(localId) {
|
|
let mediadiv = document.getElementById('peers');
|
|
let peer = document.getElementById('peer-' + localId);
|
|
if(!peer)
|
|
throw new Error('Removing unknown media');
|
|
|
|
let media = /** @type{HTMLVideoElement} */
|
|
(document.getElementById('media-' + localId));
|
|
|
|
media.srcObject = null;
|
|
mediadiv.removeChild(peer);
|
|
|
|
setButtonsVisibility();
|
|
resizePeers();
|
|
hideVideo();
|
|
}
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
*/
|
|
function setMediaStatus(c) {
|
|
let state = c && c.pc && c.pc.iceConnectionState;
|
|
let good = state === 'connected' || state === 'completed';
|
|
|
|
let media = document.getElementById('media-' + c.localId);
|
|
if(!media) {
|
|
console.warn('Setting status of unknown media.');
|
|
return;
|
|
}
|
|
if(good) {
|
|
media.classList.remove('media-failed');
|
|
if(c.userdata.play) {
|
|
if(media instanceof HTMLMediaElement)
|
|
media.play().catch(e => {
|
|
console.error(e);
|
|
displayError(e);
|
|
});
|
|
delete(c.userdata.play);
|
|
}
|
|
} else {
|
|
media.classList.add('media-failed');
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @param {Stream} c
|
|
* @param {string} [fallback]
|
|
*/
|
|
function setLabel(c, fallback) {
|
|
let label = document.getElementById('label-' + c.localId);
|
|
if(!label)
|
|
return;
|
|
let l = c.username;
|
|
if(l) {
|
|
label.textContent = l;
|
|
label.classList.remove('label-fallback');
|
|
} else if(fallback) {
|
|
label.textContent = fallback;
|
|
label.classList.add('label-fallback');
|
|
} else {
|
|
label.textContent = '';
|
|
label.classList.remove('label-fallback');
|
|
}
|
|
}
|
|
|
|
function resizePeers() {
|
|
// Window resize can call this method too early
|
|
if (!serverConnection)
|
|
return;
|
|
let count =
|
|
Object.keys(serverConnection.up).length +
|
|
Object.keys(serverConnection.down).length;
|
|
let peers = document.getElementById('peers');
|
|
let columns = Math.ceil(Math.sqrt(count));
|
|
if (!count)
|
|
// No video, nothing to resize.
|
|
return;
|
|
let container = document.getElementById("video-container");
|
|
// Peers div has total padding of 40px, we remove 40 on offsetHeight
|
|
// Grid has row-gap of 5px
|
|
let rows = Math.ceil(count / columns);
|
|
let margins = (rows - 1) * 5 + 40;
|
|
|
|
if (count <= 2 && container.offsetHeight > container.offsetWidth) {
|
|
peers.style['grid-template-columns'] = "repeat(1, 1fr)";
|
|
rows = count;
|
|
} else {
|
|
peers.style['grid-template-columns'] = `repeat(${columns}, 1fr)`;
|
|
}
|
|
if (count === 1)
|
|
return;
|
|
let max_video_height = (peers.offsetHeight - margins) / rows;
|
|
let media_list = peers.querySelectorAll(".media");
|
|
for(let i = 0; i < media_list.length; i++) {
|
|
let media = media_list[i];
|
|
if(!(media instanceof HTMLMediaElement)) {
|
|
console.warn('Unexpected media');
|
|
continue;
|
|
}
|
|
media.style['max-height'] = max_video_height + "px";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Lexicographic order, with case differences secondary.
|
|
* @param{string} a
|
|
* @param{string} b
|
|
*/
|
|
function stringCompare(a, b) {
|
|
let la = a.toLowerCase();
|
|
let lb = b.toLowerCase();
|
|
if(la < lb)
|
|
return -1;
|
|
else if(la > lb)
|
|
return +1;
|
|
else if(a < b)
|
|
return -1;
|
|
else if(a > b)
|
|
return +1;
|
|
return 0
|
|
}
|
|
|
|
/**
|
|
* @param {HTMLElement} elt
|
|
*/
|
|
function userMenu(elt) {
|
|
if(!elt.id.startsWith('user-'))
|
|
throw new Error('Unexpected id for user menu');
|
|
let id = elt.id.slice('user-'.length);
|
|
let user = serverConnection.users[id];
|
|
if(!user)
|
|
throw new Error("Couldn't find user")
|
|
let items = [];
|
|
if(id === serverConnection.id) {
|
|
let mydata = serverConnection.users[serverConnection.id].data;
|
|
if(mydata['raisehand'])
|
|
items.push({label: 'Unraise hand', onClick: () => {
|
|
serverConnection.userAction(
|
|
'setdata', serverConnection.id, {'raisehand': null},
|
|
);
|
|
}});
|
|
else
|
|
items.push({label: 'Raise hand', onClick: () => {
|
|
serverConnection.userAction(
|
|
'setdata', serverConnection.id, {'raisehand': true},
|
|
);
|
|
}});
|
|
if(serverConnection.permissions.indexOf('present')>= 0 && canFile())
|
|
items.push({label: 'Broadcast file', onClick: presentFile});
|
|
items.push({label: 'Restart media', onClick: renegotiateStreams});
|
|
} else {
|
|
items.push({label: 'Send file', onClick: () => {
|
|
sendFile(id);
|
|
}});
|
|
if(serverConnection.permissions.indexOf('op') >= 0) {
|
|
items.push({type: 'seperator'}); // sic
|
|
if(user.permissions.indexOf('present') >= 0)
|
|
items.push({label: 'Forbid presenting', onClick: () => {
|
|
serverConnection.userAction('unpresent', id);
|
|
}});
|
|
else
|
|
items.push({label: 'Allow presenting', onClick: () => {
|
|
serverConnection.userAction('present', id);
|
|
}});
|
|
items.push({label: 'Mute', onClick: () => {
|
|
serverConnection.userMessage('mute', id);
|
|
}});
|
|
items.push({label: 'Kick out', onClick: () => {
|
|
serverConnection.userAction('kick', id);
|
|
}});
|
|
}
|
|
}
|
|
/** @ts-ignore */
|
|
new Contextual({
|
|
items: items,
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {user} userinfo
|
|
*/
|
|
function addUser(id, userinfo) {
|
|
let div = document.getElementById('users');
|
|
let user = document.createElement('div');
|
|
user.id = 'user-' + id;
|
|
user.classList.add("user-p");
|
|
setUserStatus(id, user, userinfo);
|
|
user.addEventListener('click', function(e) {
|
|
let elt = e.target;
|
|
if(!elt || !(elt instanceof HTMLElement))
|
|
throw new Error("Couldn't find user div");
|
|
userMenu(elt);
|
|
});
|
|
|
|
let us = div.children;
|
|
|
|
if(id === serverConnection.id) {
|
|
if(us.length === 0)
|
|
div.appendChild(user);
|
|
else
|
|
div.insertBefore(user, us[0]);
|
|
return;
|
|
}
|
|
|
|
if(userinfo.username) {
|
|
for(let i = 0; i < us.length; i++) {
|
|
let child = us[i];
|
|
let childid = child.id.slice('user-'.length);
|
|
if(childid === serverConnection.id)
|
|
continue;
|
|
let childuser = serverConnection.users[childid] || null;
|
|
let childname = (childuser && childuser.username) || null;
|
|
if(!childname || stringCompare(childname, userinfo.username) > 0) {
|
|
div.insertBefore(user, child);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
div.appendChild(user);
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {user} userinfo
|
|
*/
|
|
function changeUser(id, userinfo) {
|
|
let elt = document.getElementById('user-' + id);
|
|
if(!elt) {
|
|
console.warn('Unknown user ' + id);
|
|
return;
|
|
}
|
|
setUserStatus(id, elt, userinfo);
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {HTMLElement} elt
|
|
* @param {user} userinfo
|
|
*/
|
|
function setUserStatus(id, elt, userinfo) {
|
|
elt.textContent = userinfo.username ? userinfo.username : '(anon)';
|
|
if(userinfo.data.raisehand)
|
|
elt.classList.add('user-status-raisehand');
|
|
else
|
|
elt.classList.remove('user-status-raisehand');
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
*/
|
|
function delUser(id) {
|
|
let div = document.getElementById('users');
|
|
let user = document.getElementById('user-' + id);
|
|
div.removeChild(user);
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {string} kind
|
|
*/
|
|
function gotUser(id, kind) {
|
|
switch(kind) {
|
|
case 'add':
|
|
addUser(id, serverConnection.users[id]);
|
|
if(Object.keys(serverConnection.users).length == 3)
|
|
reconsiderSendParameters();
|
|
break;
|
|
case 'delete':
|
|
delUser(id);
|
|
if(Object.keys(serverConnection.users).length < 3)
|
|
scheduleReconsiderParameters();
|
|
break;
|
|
case 'change':
|
|
changeUser(id, serverConnection.users[id]);
|
|
break;
|
|
default:
|
|
console.warn('Unknown user kind', kind);
|
|
break;
|
|
}
|
|
}
|
|
|
|
function displayUsername() {
|
|
document.getElementById('userspan').textContent = serverConnection.username;
|
|
let op = serverConnection.permissions.indexOf('op') >= 0;
|
|
let present = serverConnection.permissions.indexOf('present') >= 0;
|
|
let text = '';
|
|
if(op && present)
|
|
text = '(op, presenter)';
|
|
else if(op)
|
|
text = 'operator';
|
|
else if(present)
|
|
text = 'presenter';
|
|
document.getElementById('permspan').textContent = text;
|
|
}
|
|
|
|
let presentRequested = null;
|
|
|
|
/**
|
|
* @param {string} s
|
|
*/
|
|
function capitalise(s) {
|
|
if(s.length <= 0)
|
|
return s;
|
|
return s.charAt(0).toUpperCase() + s.slice(1);
|
|
}
|
|
|
|
/**
|
|
* @param {string} title
|
|
*/
|
|
function setTitle(title) {
|
|
function set(title) {
|
|
document.title = title;
|
|
document.getElementById('title').textContent = title;
|
|
}
|
|
if(title)
|
|
set(title);
|
|
else
|
|
set('Galène');
|
|
}
|
|
|
|
|
|
/**
|
|
* @this {ServerConnection}
|
|
* @param {string} group
|
|
* @param {Array<string>} perms
|
|
* @param {Object<string,any>} status
|
|
* @param {Object<string,any>} data
|
|
* @param {string} message
|
|
*/
|
|
async function gotJoined(kind, group, perms, status, data, message) {
|
|
let present = presentRequested;
|
|
presentRequested = null;
|
|
|
|
switch(kind) {
|
|
case 'fail':
|
|
displayError('The server said: ' + message);
|
|
this.close();
|
|
setButtonsVisibility();
|
|
return;
|
|
case 'redirect':
|
|
this.close();
|
|
document.location.href = message;
|
|
return;
|
|
case 'leave':
|
|
this.close();
|
|
setButtonsVisibility();
|
|
return;
|
|
case 'join':
|
|
case 'change':
|
|
groupStatus = status;
|
|
setTitle((status && status.displayName) || capitalise(group));
|
|
displayUsername();
|
|
setButtonsVisibility();
|
|
if(kind === 'change')
|
|
return;
|
|
break;
|
|
default:
|
|
displayError('Unknown join message');
|
|
this.close();
|
|
return;
|
|
}
|
|
|
|
let input = /** @type{HTMLTextAreaElement} */
|
|
(document.getElementById('input'));
|
|
input.placeholder = 'Type /help for help';
|
|
setTimeout(() => {input.placeholder = '';}, 8000);
|
|
|
|
if(status.locked)
|
|
displayWarning('This group is locked');
|
|
|
|
if(typeof RTCPeerConnection === 'undefined')
|
|
displayWarning("This browser doesn't support WebRTC");
|
|
else
|
|
this.request(mapRequest(getSettings().request));
|
|
|
|
if(serverConnection.permissions.indexOf('present') >= 0 &&
|
|
!findUpMedia('camera')) {
|
|
if(present) {
|
|
if(present === 'mike')
|
|
updateSettings({video: ''});
|
|
else if(present === 'both')
|
|
delSetting('video');
|
|
reflectSettings();
|
|
|
|
let button = getButtonElement('presentbutton');
|
|
button.disabled = true;
|
|
try {
|
|
await addLocalMedia();
|
|
} finally {
|
|
button.disabled = false;
|
|
}
|
|
} else {
|
|
displayMessage(
|
|
"Press Enable to enable your camera or microphone"
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
/** @type {Object<string,TransferredFile>} */
|
|
let transferredFiles = {};
|
|
|
|
/**
|
|
* A file in the process of being transferred.
|
|
*
|
|
* @constructor
|
|
*/
|
|
function TransferredFile(id, userid, up, username, name, type, size) {
|
|
/** @type {string} */
|
|
this.id = id;
|
|
/** @type {string} */
|
|
this.userid = userid;
|
|
/** @type {boolean} */
|
|
this.up = up;
|
|
/** @type {string} */
|
|
this.username = username;
|
|
/** @type {string} */
|
|
this.name = name;
|
|
/** @type {string} */
|
|
this.type = type;
|
|
/** @type {number} */
|
|
this.size = size;
|
|
/** @type {File} */
|
|
this.file = null;
|
|
/** @type {RTCPeerConnection} */
|
|
this.pc = null;
|
|
/** @type {RTCDataChannel} */
|
|
this.dc = null;
|
|
/** @type {Array<RTCIceCandidateInit>} */
|
|
this.candidates = [];
|
|
/** @type {Array<Blob|ArrayBuffer>} */
|
|
this.data = [];
|
|
/** @type {number} */
|
|
this.datalen = 0;
|
|
}
|
|
|
|
TransferredFile.prototype.fullid = function() {
|
|
return this.userid + (this.up ? '+' : '-') + this.id;
|
|
};
|
|
|
|
/**
|
|
* @param {boolean} up
|
|
* @param {string} userid
|
|
* @param {string} fileid
|
|
* @returns {TransferredFile}
|
|
*/
|
|
TransferredFile.get = function(up, userid, fileid) {
|
|
return transferredFiles[userid + (up ? '+' : '-') + fileid];
|
|
};
|
|
|
|
TransferredFile.prototype.close = function() {
|
|
if(this.dc) {
|
|
this.dc.onclose = null;
|
|
this.dc.onerror = null;
|
|
this.dc.onmessage = null;
|
|
}
|
|
if(this.pc)
|
|
this.pc.close();
|
|
this.dc = null;
|
|
this.pc = null;
|
|
this.data = [];
|
|
this.datalen = 0;
|
|
delete(transferredFiles[this.fullid()]);
|
|
}
|
|
|
|
TransferredFile.prototype.pushData = function(data) {
|
|
if(data instanceof Blob) {
|
|
this.datalen += data.size;
|
|
} else if(data instanceof ArrayBuffer) {
|
|
this.datalen += data.byteLength;
|
|
} else {
|
|
throw new Error('unexpected type for received data');
|
|
}
|
|
this.data.push(data);
|
|
}
|
|
|
|
TransferredFile.prototype.getData = function() {
|
|
let blob = new Blob(this.data, {type: this.type});
|
|
if(blob.size != this.datalen)
|
|
throw new Error('Inconsistent data size');
|
|
this.data = [];
|
|
this.datalen = 0;
|
|
return blob;
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
function fileTransferBox(f) {
|
|
let p = document.createElement('p');
|
|
if(f.up)
|
|
p.textContent =
|
|
`We have offered to send a file called "${f.name}" ` +
|
|
`to user ${f.username}.`;
|
|
else
|
|
p.textContent =
|
|
`User ${f.username} offered to send us a file ` +
|
|
`called "${f.name}" of size ${f.size}.`
|
|
let bno = null, byes = null;
|
|
if(f.up) {
|
|
bno = document.createElement('button');
|
|
bno.textContent = 'Cancel';
|
|
bno.onclick = function(e) {
|
|
cancelFile(f);
|
|
};
|
|
bno.id = "bno-" + f.fullid();
|
|
} else {
|
|
byes = document.createElement('button');
|
|
byes.textContent = 'Accept';
|
|
byes.onclick = function(e) {
|
|
getFile(f);
|
|
};
|
|
byes.id = "byes-" + f.fullid();
|
|
bno = document.createElement('button');
|
|
bno.textContent = 'Decline';
|
|
bno.onclick = function(e) {
|
|
rejectFile(f);
|
|
};
|
|
bno.id = "bno-" + f.fullid();
|
|
}
|
|
let status = document.createElement('div');
|
|
status.id = 'status-' + f.fullid();
|
|
if(!f.up) {
|
|
status.textContent =
|
|
'(Choosing "Accept" will disclose your IP address.)';
|
|
}
|
|
let div = document.createElement('div');
|
|
div.id = 'file-' + f.fullid();
|
|
div.appendChild(p);
|
|
if(byes)
|
|
div.appendChild(byes);
|
|
if(bno)
|
|
div.appendChild(bno);
|
|
div.appendChild(status);
|
|
div.classList.add('message');
|
|
div.classList.add('message-private');
|
|
div.classList.add('message-row');
|
|
let box = document.getElementById('box');
|
|
box.appendChild(div);
|
|
return div;
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
* @param {string} status
|
|
* @param {boolean} [delyes]
|
|
* @param {boolean} [delno]
|
|
*/
|
|
function setFileStatus(f, status, delyes, delno) {
|
|
let statusdiv = document.getElementById('status-' + f.fullid());
|
|
if(!statusdiv)
|
|
throw new Error("Couldn't find statusdiv");
|
|
statusdiv.textContent = status;
|
|
if(delyes || delno) {
|
|
let div = document.getElementById('file-' + f.fullid());
|
|
if(!div)
|
|
throw new Error("Couldn't find file div");
|
|
if(delyes) {
|
|
let byes = document.getElementById('byes-' + f.fullid())
|
|
if(byes)
|
|
div.removeChild(byes);
|
|
}
|
|
if(delno) {
|
|
let bno = document.getElementById('bno-' + f.fullid())
|
|
if(bno)
|
|
div.removeChild(bno);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
* @param {any} message
|
|
*/
|
|
function failFile(f, message) {
|
|
if(!f.dc)
|
|
return;
|
|
console.error('File transfer failed:', message);
|
|
setFileStatus(f, message ? `Failed: ${message}` : 'Failed.');
|
|
f.close();
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {File} file
|
|
*/
|
|
function offerFile(id, file) {
|
|
let fileid = newRandomId();
|
|
let username = serverConnection.users[id].username;
|
|
let f = new TransferredFile(
|
|
fileid, id, true, username, file.name, file.type, file.size,
|
|
);
|
|
f.file = file;
|
|
transferredFiles[f.fullid()] = f;
|
|
try {
|
|
fileTransferBox(f);
|
|
serverConnection.userMessage('offerfile', id, {
|
|
id: fileid,
|
|
name: f.name,
|
|
size: f.size,
|
|
type: f.type,
|
|
});
|
|
} catch(e) {
|
|
displayError(e);
|
|
f.close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
function cancelFile(f) {
|
|
serverConnection.userMessage('cancelfile', f.userid, {
|
|
id: f.id,
|
|
});
|
|
f.close();
|
|
setFileStatus(f, 'Cancelled.', true, true);
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
async function getFile(f) {
|
|
if(f.pc)
|
|
throw new Error("Download already in progress");
|
|
setFileStatus(f, 'Connecting...', true);
|
|
let pc = new RTCPeerConnection(serverConnection.getRTCConfiguration());
|
|
if(!pc)
|
|
throw new Error("Couldn't create peer connection");
|
|
f.pc = pc;
|
|
f.candidates = [];
|
|
pc.onsignalingstatechange = function(e) {
|
|
if(pc.signalingState === 'stable') {
|
|
f.candidates.forEach(c => pc.addIceCandidate(c).catch(console.warn));
|
|
f.candidates = [];
|
|
}
|
|
};
|
|
pc.onicecandidate = function(e) {
|
|
serverConnection.userMessage('filedownice', f.userid, {
|
|
id: f.id,
|
|
candidate: e.candidate,
|
|
});
|
|
};
|
|
f.dc = pc.createDataChannel('file');
|
|
f.data = [];
|
|
f.datalen = 0;
|
|
f.dc.onclose = function(e) {
|
|
try {
|
|
closeReceiveFileData(f);
|
|
} catch(e) {
|
|
failFile(f, e);
|
|
}
|
|
};
|
|
f.dc.onmessage = function(e) {
|
|
try {
|
|
receiveFileData(f, e.data);
|
|
} catch(e) {
|
|
failFile(f, e);
|
|
}
|
|
};
|
|
f.dc.onerror = function(e) {
|
|
/** @ts-ignore */
|
|
let err = e.error;
|
|
failFile(f, err);
|
|
};
|
|
let offer = await pc.createOffer();
|
|
if(!offer)
|
|
throw new Error("Couldn't create offer");
|
|
await pc.setLocalDescription(offer);
|
|
serverConnection.userMessage('getfile', f.userid, {
|
|
id: f.id,
|
|
offer: pc.localDescription.sdp,
|
|
});
|
|
setFileStatus(f, 'Negotiating...', true);
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
async function rejectFile(f) {
|
|
serverConnection.userMessage('rejectfile', f.userid, {
|
|
id: f.id,
|
|
});
|
|
setFileStatus(f, 'Rejected.', true, true);
|
|
f.close();
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
* @param {string} sdp
|
|
*/
|
|
async function sendOfferedFile(f, sdp) {
|
|
if(f.pc)
|
|
throw new Error('Transfer already in progress');
|
|
|
|
setFileStatus(f, 'Negotiating...', true);
|
|
let pc = new RTCPeerConnection(serverConnection.getRTCConfiguration());
|
|
if(!pc)
|
|
throw new Error("Couldn't create peer connection");
|
|
f.pc = pc;
|
|
f.candidates = [];
|
|
pc.onicecandidate = function(e) {
|
|
serverConnection.userMessage('fileupice', f.userid, {
|
|
id: f.id,
|
|
candidate: e.candidate,
|
|
});
|
|
};
|
|
pc.onsignalingstatechange = function(e) {
|
|
if(pc.signalingState === 'stable') {
|
|
f.candidates.forEach(c => pc.addIceCandidate(c).catch(console.warn));
|
|
f.candidates = [];
|
|
}
|
|
};
|
|
pc.ondatachannel = function(e) {
|
|
if(f.dc)
|
|
throw new Error('Duplicate datachannel');
|
|
f.dc = /** @type{RTCDataChannel} */(e.channel);
|
|
f.dc.onclose = function(e) {
|
|
try {
|
|
closeSendFileData(f);
|
|
} catch(e) {
|
|
failFile(f, e);
|
|
}
|
|
};
|
|
f.dc.onerror = function(e) {
|
|
/** @ts-ignore */
|
|
let err = e.error;
|
|
failFile(f, err);
|
|
}
|
|
f.dc.onmessage = function(e) {
|
|
try {
|
|
ackSendFileData(f, e.data);
|
|
} catch(e) {
|
|
failFile(f, e);
|
|
}
|
|
};
|
|
sendFileData(f).catch(e => failFile(f, e));
|
|
};
|
|
|
|
await pc.setRemoteDescription({
|
|
type: 'offer',
|
|
sdp: sdp,
|
|
});
|
|
|
|
let answer = await pc.createAnswer();
|
|
if(!answer)
|
|
throw new Error("Couldn't create answer");
|
|
await pc.setLocalDescription(answer);
|
|
serverConnection.userMessage('sendfile', f.userid, {
|
|
id: f.id,
|
|
answer: pc.localDescription.sdp,
|
|
});
|
|
setFileStatus(f, 'Uploading...', true);
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
* @param {string} sdp
|
|
*/
|
|
async function receiveFile(f, sdp) {
|
|
await f.pc.setRemoteDescription({
|
|
type: 'answer',
|
|
sdp: sdp,
|
|
});
|
|
setFileStatus(f, 'Downloading...', true);
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
async function sendFileData(f) {
|
|
let r = f.file.stream().getReader();
|
|
|
|
f.dc.bufferedAmountLowThreshold = 65536;
|
|
|
|
async function write(a) {
|
|
while(f.dc.bufferedAmount > f.dc.bufferedAmountLowThreshold) {
|
|
await new Promise((resolve, reject) => {
|
|
if(!f.dc) {
|
|
reject(new Error('File is closed.'));
|
|
return;
|
|
}
|
|
f.dc.onbufferedamountlow = function(e) {
|
|
if(!f.dc) {
|
|
reject(new Error('File is closed.'));
|
|
return;
|
|
}
|
|
f.dc.onbufferedamountlow = null;
|
|
resolve();
|
|
}
|
|
});
|
|
}
|
|
f.dc.send(a);
|
|
f.datalen += a.length;
|
|
setFileStatus(f, `Uploading... ${f.datalen}/${f.size}`, true);
|
|
}
|
|
|
|
while(true) {
|
|
let v = await r.read();
|
|
if(v.done)
|
|
break;
|
|
if(!(v.value instanceof Uint8Array))
|
|
throw new Error('Unexpected type for chunk');
|
|
if(v.value.length <= 16384) {
|
|
await write(v.value);
|
|
} else {
|
|
for(let i = 0; i < v.value.length; i += 16384) {
|
|
let a = new Uint8Array(
|
|
v.value.buffer, i, Math.min(16384, v.value.length - i),
|
|
);
|
|
await write(a);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
function ackSendFileData(f, data) {
|
|
if(data === 'done' && f.datalen == f.size)
|
|
setFileStatus(f, 'Done.', true, true);
|
|
else
|
|
setFileStatus(f, 'Failed.', true, true);
|
|
f.dc.onclose = null;
|
|
f.dc.onerror = null;
|
|
f.close();
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
function closeSendFileData(f) {
|
|
setFileStatus(f, 'Failed.', true, true);
|
|
f.close();
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
* @param {Blob|ArrayBuffer} data
|
|
*/
|
|
function receiveFileData(f, data) {
|
|
f.pushData(data);
|
|
setFileStatus(f, `Downloading... ${f.datalen}/${f.size}`, true);
|
|
|
|
if(f.datalen < f.size)
|
|
return;
|
|
|
|
if(f.datalen != f.size) {
|
|
setFileStatus(f, 'Failed.', true, true);
|
|
f.close();
|
|
return;
|
|
}
|
|
|
|
f.dc.onmessage = null;
|
|
doneReceiveFileData(f);
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
async function doneReceiveFileData(f) {
|
|
setFileStatus(f, 'Done.', true, true);
|
|
let blob = f.getData();
|
|
|
|
await new Promise((resolve, reject) => {
|
|
let timer = setTimeout(function(e) { resolve(); }, 2000);
|
|
f.dc.onclose = function(e) {
|
|
clearTimeout(timer);
|
|
resolve();
|
|
};
|
|
f.dc.onerror = function(e) {
|
|
clearTimeout(timer);
|
|
resolve();
|
|
};
|
|
f.dc.send('done');
|
|
});
|
|
|
|
f.dc.onclose = null;
|
|
f.dc.onerror = null;
|
|
f.close();
|
|
|
|
let url = URL.createObjectURL(blob);
|
|
let a = document.createElement('a');
|
|
a.href = url;
|
|
a.textContent = f.name;
|
|
a.download = f.name;
|
|
a.type = f.type;
|
|
a.click();
|
|
URL.revokeObjectURL(url);
|
|
}
|
|
|
|
/**
|
|
* @param {TransferredFile} f
|
|
*/
|
|
function closeReceiveFileData(f) {
|
|
if(f.datalen !== f.size) {
|
|
setFileStatus(f, 'Failed.', true, true)
|
|
f.close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} id
|
|
* @param {string} dest
|
|
* @param {string} username
|
|
* @param {number} time
|
|
* @param {boolean} privileged
|
|
* @param {string} kind
|
|
* @param {any} message
|
|
*/
|
|
function gotUserMessage(id, dest, username, time, privileged, kind, message) {
|
|
switch(kind) {
|
|
case 'kicked':
|
|
case 'error':
|
|
case 'warning':
|
|
case 'info':
|
|
let from = id ? (username || 'Anonymous') : 'The Server';
|
|
if(privileged)
|
|
displayError(`${from} said: ${message}`, kind);
|
|
else
|
|
console.error(`Got unprivileged message of kind ${kind}`);
|
|
break;
|
|
case 'mute':
|
|
if(privileged) {
|
|
setLocalMute(true, true);
|
|
let by = username ? ' by ' + username : '';
|
|
displayWarning(`You have been muted${by}`);
|
|
} else {
|
|
console.error(`Got unprivileged message of kind ${kind}`);
|
|
}
|
|
break;
|
|
case 'clearchat':
|
|
if(privileged) {
|
|
clearChat();
|
|
} else {
|
|
console.error(`Got unprivileged message of kind ${kind}`);
|
|
}
|
|
break;
|
|
case 'offerfile': {
|
|
let f = new TransferredFile(
|
|
message.id, id, false, username,
|
|
message.name, message.type, message.size,
|
|
);
|
|
transferredFiles[f.fullid()] = f;
|
|
fileTransferBox(f);
|
|
break;
|
|
}
|
|
case 'cancelfile': {
|
|
let f = TransferredFile.get(false, id, message.id);
|
|
if(!f)
|
|
throw new Error('unexpected cancelfile');
|
|
setFileStatus(f, 'Cancelled.', true, true);
|
|
f.close();
|
|
break;
|
|
}
|
|
case 'getfile': {
|
|
let f = TransferredFile.get(true, id, message.id);
|
|
if(!f)
|
|
throw new Error('unexpected getfile');
|
|
sendOfferedFile(f, message.offer);
|
|
break;
|
|
}
|
|
case 'rejectfile': {
|
|
let f = TransferredFile.get(true, id, message.id);
|
|
if(!f)
|
|
throw new Error('unexpected rejectfile');
|
|
setFileStatus(f, 'Rejected.', true, true);
|
|
f.close();
|
|
break;
|
|
}
|
|
case 'sendfile': {
|
|
let f = TransferredFile.get(false, id, message.id);
|
|
if(!f)
|
|
throw new Error('unexpected sendfile');
|
|
receiveFile(f, message.answer);
|
|
break;
|
|
}
|
|
case 'filedownice': {
|
|
let f = TransferredFile.get(true, id, message.id);
|
|
if(!f.pc) {
|
|
console.warn('Unexpected filedownice');
|
|
return;
|
|
}
|
|
if(f.pc.signalingState === 'stable')
|
|
f.pc.addIceCandidate(message.candidate).catch(console.warn);
|
|
else
|
|
f.candidates.push(message.candidate);
|
|
break;
|
|
}
|
|
case 'fileupice': {
|
|
let f = TransferredFile.get(false, id, message.id);
|
|
if(!f.pc) {
|
|
console.warn('Unexpected fileupice');
|
|
return;
|
|
}
|
|
if(f.pc.signalingState === 'stable')
|
|
f.pc.addIceCandidate(message.candidate).catch(console.warn);
|
|
else
|
|
f.candidates.push(message.candidate);
|
|
break;
|
|
|
|
}
|
|
default:
|
|
console.warn(`Got unknown user message ${kind}`);
|
|
break;
|
|
}
|
|
};
|
|
|
|
|
|
const urlRegexp = /https?:\/\/[-a-zA-Z0-9@:%/._\\+~#&()=?]+[-a-zA-Z0-9@:%/_\\+~#&()=]/g;
|
|
|
|
/**
|
|
* @param {string} line
|
|
* @returns {Array.<Text|HTMLElement>}
|
|
*/
|
|
function formatLine(line) {
|
|
let r = new RegExp(urlRegexp);
|
|
let result = [];
|
|
let pos = 0;
|
|
while(true) {
|
|
let m = r.exec(line);
|
|
if(!m)
|
|
break;
|
|
result.push(document.createTextNode(line.slice(pos, m.index)));
|
|
let a = document.createElement('a');
|
|
a.href = m[0];
|
|
a.textContent = m[0];
|
|
a.target = '_blank';
|
|
a.rel = 'noreferrer noopener';
|
|
result.push(a);
|
|
pos = m.index + m[0].length;
|
|
}
|
|
result.push(document.createTextNode(line.slice(pos)));
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @param {number} time
|
|
* @returns {string}
|
|
*/
|
|
function formatTime(time) {
|
|
let delta = Date.now() - time;
|
|
let date = new Date(time);
|
|
let m = date.getMinutes();
|
|
if(delta > -30000)
|
|
return date.getHours() + ':' + ((m < 10) ? '0' : '') + m;
|
|
return date.toLocaleString();
|
|
}
|
|
|
|
/**
|
|
* @typedef {Object} lastMessage
|
|
* @property {string} [nick]
|
|
* @property {string} [peerId]
|
|
* @property {string} [dest]
|
|
* @property {number} [time]
|
|
*/
|
|
|
|
/** @type {lastMessage} */
|
|
let lastMessage = {};
|
|
|
|
/**
|
|
* @param {string} peerId
|
|
* @param {string} dest
|
|
* @param {string} nick
|
|
* @param {number} time
|
|
* @param {boolean} privileged
|
|
* @param {boolean} history
|
|
* @param {string} kind
|
|
* @param {unknown} message
|
|
*/
|
|
function addToChatbox(peerId, dest, nick, time, privileged, history, kind, message) {
|
|
let row = document.createElement('div');
|
|
row.classList.add('message-row');
|
|
let container = document.createElement('div');
|
|
container.classList.add('message');
|
|
row.appendChild(container);
|
|
let footer = document.createElement('p');
|
|
footer.classList.add('message-footer');
|
|
if(!peerId)
|
|
container.classList.add('message-system');
|
|
if(serverConnection && peerId === serverConnection.id)
|
|
container.classList.add('message-sender');
|
|
if(dest)
|
|
container.classList.add('message-private');
|
|
|
|
if(kind !== 'me') {
|
|
let p = document.createElement('p');
|
|
p.textContent = message.toString();
|
|
let doHeader = true;
|
|
if(!peerId && !dest && !nick) {
|
|
doHeader = false;
|
|
} else if(lastMessage.nick !== (nick || null) ||
|
|
lastMessage.peerId !== peerId ||
|
|
lastMessage.dest !== (dest || null) ||
|
|
!time || !lastMessage.time) {
|
|
doHeader = true;
|
|
} else {
|
|
let delta = time - lastMessage.time;
|
|
doHeader = delta < 0 || delta > 60000;
|
|
}
|
|
|
|
if(doHeader) {
|
|
let header = document.createElement('p');
|
|
if(peerId || nick || dest) {
|
|
let user = document.createElement('span');
|
|
let u = serverConnection.users[dest];
|
|
let name = (u && u.username);
|
|
user.textContent = dest ?
|
|
`${nick||'(anon)'} \u2192 ${name || '(anon)'}` :
|
|
(nick || '(anon)');
|
|
user.classList.add('message-user');
|
|
header.appendChild(user);
|
|
}
|
|
header.classList.add('message-header');
|
|
container.appendChild(header);
|
|
if(time) {
|
|
let tm = document.createElement('span');
|
|
tm.textContent = formatTime(time);
|
|
tm.classList.add('message-time');
|
|
header.appendChild(tm);
|
|
}
|
|
}
|
|
|
|
p.classList.add('message-content');
|
|
container.appendChild(p);
|
|
lastMessage.nick = (nick || null);
|
|
lastMessage.peerId = peerId;
|
|
lastMessage.dest = (dest || null);
|
|
lastMessage.time = (time || null);
|
|
} else {
|
|
let asterisk = document.createElement('span');
|
|
asterisk.textContent = '*';
|
|
asterisk.classList.add('message-me-asterisk');
|
|
let user = document.createElement('span');
|
|
user.textContent = nick || '(anon)';
|
|
user.classList.add('message-me-user');
|
|
let content = document.createElement('span');
|
|
formatLine(message.toString()).forEach(elt => {
|
|
content.appendChild(elt);
|
|
});
|
|
content.classList.add('message-me-content');
|
|
container.appendChild(asterisk);
|
|
container.appendChild(user);
|
|
container.appendChild(content);
|
|
container.classList.add('message-me');
|
|
lastMessage = {};
|
|
}
|
|
container.appendChild(footer);
|
|
|
|
let box = document.getElementById('box');
|
|
box.appendChild(row);
|
|
if(box.scrollHeight > box.clientHeight) {
|
|
box.scrollTop = box.scrollHeight - box.clientHeight;
|
|
}
|
|
|
|
return message;
|
|
}
|
|
|
|
/**
|
|
* @param {string} message
|
|
*/
|
|
function localMessage(message) {
|
|
return addToChatbox(null, null, null, Date.now(), false, false, '', message);
|
|
}
|
|
|
|
function clearChat() {
|
|
lastMessage = {};
|
|
document.getElementById('box').textContent = '';
|
|
}
|
|
|
|
/**
|
|
* A command known to the command-line parser.
|
|
*
|
|
* @typedef {Object} command
|
|
* @property {string} [parameters]
|
|
* - A user-readable list of parameters.
|
|
* @property {string} [description]
|
|
* - A user-readable description, null if undocumented.
|
|
* @property {() => string} [predicate]
|
|
* - Returns null if the command is available.
|
|
* @property {(c: string, r: string) => void} f
|
|
*/
|
|
|
|
/**
|
|
* The set of commands known to the command-line parser.
|
|
*
|
|
* @type {Object.<string,command>}
|
|
*/
|
|
let commands = {};
|
|
|
|
function operatorPredicate() {
|
|
if(serverConnection && serverConnection.permissions &&
|
|
serverConnection.permissions.indexOf('op') >= 0)
|
|
return null;
|
|
return 'You are not an operator';
|
|
}
|
|
|
|
function recordingPredicate() {
|
|
if(serverConnection && serverConnection.permissions &&
|
|
serverConnection.permissions.indexOf('record') >= 0)
|
|
return null;
|
|
return 'You are not allowed to record';
|
|
}
|
|
|
|
commands.help = {
|
|
description: 'display this help',
|
|
f: (c, r) => {
|
|
/** @type {string[]} */
|
|
let cs = [];
|
|
for(let cmd in commands) {
|
|
let c = commands[cmd];
|
|
if(!c.description)
|
|
continue;
|
|
if(c.predicate && c.predicate())
|
|
continue;
|
|
cs.push(`/${cmd}${c.parameters?' ' + c.parameters:''}: ${c.description}`);
|
|
}
|
|
localMessage(cs.sort().join('\n'));
|
|
}
|
|
};
|
|
|
|
commands.me = {
|
|
f: (c, r) => {
|
|
// handled as a special case
|
|
throw new Error("this shouldn't happen");
|
|
}
|
|
};
|
|
|
|
commands.set = {
|
|
f: (c, r) => {
|
|
if(!r) {
|
|
let settings = getSettings();
|
|
let s = "";
|
|
for(let key in settings)
|
|
s = s + `${key}: ${JSON.stringify(settings[key])}\n`;
|
|
localMessage(s);
|
|
return;
|
|
}
|
|
let p = parseCommand(r);
|
|
let value;
|
|
if(p[1]) {
|
|
value = JSON.parse(p[1]);
|
|
} else {
|
|
value = true;
|
|
}
|
|
updateSetting(p[0], value);
|
|
reflectSettings();
|
|
}
|
|
};
|
|
|
|
commands.unset = {
|
|
f: (c, r) => {
|
|
delSetting(r.trim());
|
|
return;
|
|
}
|
|
};
|
|
|
|
commands.leave = {
|
|
description: "leave group",
|
|
f: (c, r) => {
|
|
if(!serverConnection)
|
|
throw new Error('Not connected');
|
|
serverConnection.close();
|
|
}
|
|
};
|
|
|
|
commands.clear = {
|
|
predicate: operatorPredicate,
|
|
description: 'clear the chat history',
|
|
f: (c, r) => {
|
|
serverConnection.groupAction('clearchat');
|
|
}
|
|
};
|
|
|
|
commands.lock = {
|
|
predicate: operatorPredicate,
|
|
description: 'lock this group',
|
|
parameters: '[message]',
|
|
f: (c, r) => {
|
|
serverConnection.groupAction('lock', r);
|
|
}
|
|
};
|
|
|
|
commands.unlock = {
|
|
predicate: operatorPredicate,
|
|
description: 'unlock this group, revert the effect of /lock',
|
|
f: (c, r) => {
|
|
serverConnection.groupAction('unlock');
|
|
}
|
|
};
|
|
|
|
commands.record = {
|
|
predicate: recordingPredicate,
|
|
description: 'start recording',
|
|
f: (c, r) => {
|
|
serverConnection.groupAction('record');
|
|
}
|
|
};
|
|
|
|
commands.unrecord = {
|
|
predicate: recordingPredicate,
|
|
description: 'stop recording',
|
|
f: (c, r) => {
|
|
serverConnection.groupAction('unrecord');
|
|
}
|
|
};
|
|
|
|
commands.subgroups = {
|
|
predicate: operatorPredicate,
|
|
description: 'list subgroups',
|
|
f: (c, r) => {
|
|
serverConnection.groupAction('subgroups');
|
|
}
|
|
};
|
|
|
|
function renegotiateStreams() {
|
|
for(let id in serverConnection.up)
|
|
serverConnection.up[id].restartIce();
|
|
for(let id in serverConnection.down)
|
|
serverConnection.down[id].restartIce();
|
|
}
|
|
|
|
commands.renegotiate = {
|
|
description: 'renegotiate media streams',
|
|
f: (c, r) => {
|
|
renegotiateStreams();
|
|
}
|
|
};
|
|
|
|
commands.replace = {
|
|
f: (c, r) => {
|
|
replaceUpStreams(null);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* parseCommand splits a string into two space-separated parts. The first
|
|
* part may be quoted and may include backslash escapes.
|
|
*
|
|
* @param {string} line
|
|
* @returns {string[]}
|
|
*/
|
|
function parseCommand(line) {
|
|
let i = 0;
|
|
while(i < line.length && line[i] === ' ')
|
|
i++;
|
|
let start = ' ';
|
|
if(i < line.length && line[i] === '"' || line[i] === "'") {
|
|
start = line[i];
|
|
i++;
|
|
}
|
|
let first = "";
|
|
while(i < line.length) {
|
|
if(line[i] === start) {
|
|
if(start !== ' ')
|
|
i++;
|
|
break;
|
|
}
|
|
if(line[i] === '\\' && i < line.length - 1)
|
|
i++;
|
|
first = first + line[i];
|
|
i++;
|
|
}
|
|
|
|
while(i < line.length && line[i] === ' ')
|
|
i++;
|
|
return [first, line.slice(i)];
|
|
}
|
|
|
|
/**
|
|
* @param {string} user
|
|
*/
|
|
function findUserId(user) {
|
|
if(user in serverConnection.users)
|
|
return user;
|
|
|
|
for(let id in serverConnection.users) {
|
|
let u = serverConnection.users[id];
|
|
if(u && u.username === user)
|
|
return id;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
commands.msg = {
|
|
parameters: 'user message',
|
|
description: 'send a private message',
|
|
f: (c, r) => {
|
|
let p = parseCommand(r);
|
|
if(!p[0])
|
|
throw new Error('/msg requires parameters');
|
|
let id = findUserId(p[0]);
|
|
if(!id)
|
|
throw new Error(`Unknown user ${p[0]}`);
|
|
serverConnection.chat('', id, p[1]);
|
|
addToChatbox(serverConnection.id, id, serverConnection.username,
|
|
Date.now(), false, false, '', p[1]);
|
|
}
|
|
};
|
|
|
|
/**
|
|
@param {string} c
|
|
@param {string} r
|
|
*/
|
|
function userCommand(c, r) {
|
|
let p = parseCommand(r);
|
|
if(!p[0])
|
|
throw new Error(`/${c} requires parameters`);
|
|
let id = findUserId(p[0]);
|
|
if(!id)
|
|
throw new Error(`Unknown user ${p[0]}`);
|
|
serverConnection.userAction(c, id, p[1]);
|
|
}
|
|
|
|
function userMessage(c, r) {
|
|
let p = parseCommand(r);
|
|
if(!p[0])
|
|
throw new Error(`/${c} requires parameters`);
|
|
let id = findUserId(p[0]);
|
|
if(!id)
|
|
throw new Error(`Unknown user ${p[0]}`);
|
|
serverConnection.userMessage(c, id, p[1]);
|
|
}
|
|
|
|
commands.kick = {
|
|
parameters: 'user [message]',
|
|
description: 'kick out a user',
|
|
predicate: operatorPredicate,
|
|
f: userCommand,
|
|
};
|
|
|
|
commands.op = {
|
|
parameters: 'user',
|
|
description: 'give operator status',
|
|
predicate: operatorPredicate,
|
|
f: userCommand,
|
|
};
|
|
|
|
commands.unop = {
|
|
parameters: 'user',
|
|
description: 'revoke operator status',
|
|
predicate: operatorPredicate,
|
|
f: userCommand,
|
|
};
|
|
|
|
commands.present = {
|
|
parameters: 'user',
|
|
description: 'give user the right to present',
|
|
predicate: operatorPredicate,
|
|
f: userCommand,
|
|
};
|
|
|
|
commands.unpresent = {
|
|
parameters: 'user',
|
|
description: 'revoke the right to present',
|
|
predicate: operatorPredicate,
|
|
f: userCommand,
|
|
};
|
|
|
|
commands.mute = {
|
|
parameters: 'user',
|
|
description: 'mute a remote user',
|
|
predicate: operatorPredicate,
|
|
f: userMessage,
|
|
};
|
|
|
|
commands.muteall = {
|
|
description: 'mute all remote users',
|
|
predicate: operatorPredicate,
|
|
f: (c, r) => {
|
|
serverConnection.userMessage('mute', null, null, true);
|
|
}
|
|
}
|
|
|
|
commands.warn = {
|
|
parameters: 'user message',
|
|
description: 'send a warning to a user',
|
|
predicate: operatorPredicate,
|
|
f: (c, r) => {
|
|
userMessage('warning', r);
|
|
},
|
|
};
|
|
|
|
commands.wall = {
|
|
parameters: 'message',
|
|
description: 'send a warning to all users',
|
|
predicate: operatorPredicate,
|
|
f: (c, r) => {
|
|
if(!r)
|
|
throw new Error('empty message');
|
|
serverConnection.userMessage('warning', '', r);
|
|
},
|
|
};
|
|
|
|
commands.raise = {
|
|
description: 'raise hand',
|
|
f: (c, r) => {
|
|
serverConnection.userAction(
|
|
"setdata", serverConnection.id, {"raisehand": true},
|
|
);
|
|
}
|
|
}
|
|
|
|
commands.unraise = {
|
|
description: 'unraise hand',
|
|
f: (c, r) => {
|
|
serverConnection.userAction(
|
|
"setdata", serverConnection.id, {"raisehand": null},
|
|
);
|
|
}
|
|
}
|
|
|
|
/** @returns {boolean} */
|
|
function canFile() {
|
|
let v =
|
|
/** @ts-ignore */
|
|
!!HTMLVideoElement.prototype.captureStream ||
|
|
/** @ts-ignore */
|
|
!!HTMLVideoElement.prototype.mozCaptureStream;
|
|
return v;
|
|
}
|
|
|
|
function presentFile() {
|
|
let input = document.createElement('input');
|
|
input.type = 'file';
|
|
input.accept="audio/*,video/*";
|
|
input.onchange = function(e) {
|
|
if(!(this instanceof HTMLInputElement))
|
|
throw new Error('Unexpected type for this');
|
|
let files = this.files;
|
|
for(let i = 0; i < files.length; i++) {
|
|
addFileMedia(files[i]).catch(e => {
|
|
console.error(e);
|
|
displayError(e);
|
|
});
|
|
}
|
|
};
|
|
input.click();
|
|
}
|
|
|
|
commands.presentfile = {
|
|
description: 'broadcast a video or audio file',
|
|
f: (c, r) => {
|
|
presentFile();
|
|
},
|
|
predicate: () => {
|
|
if(!canFile())
|
|
return 'Your browser does not support presenting arbitrary files';
|
|
if(!serverConnection || !serverConnection.permissions ||
|
|
serverConnection.permissions.indexOf('present') < 0)
|
|
return 'You are not authorised to present.';
|
|
return null;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {string} id
|
|
*/
|
|
function sendFile(id) {
|
|
let input = document.createElement('input');
|
|
input.type = 'file';
|
|
input.onchange = function(e) {
|
|
if(!(this instanceof HTMLInputElement))
|
|
throw new Error('Unexpected type for this');
|
|
let files = this.files;
|
|
for(let i = 0; i < files.length; i++) {
|
|
try {
|
|
offerFile(id, files[i]);
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
}
|
|
}
|
|
};
|
|
input.click();
|
|
}
|
|
|
|
commands.sendfile = {
|
|
parameters: 'user',
|
|
description: 'send a file (this will disclose your IP address)',
|
|
f: (c, r) => {
|
|
let p = parseCommand(r);
|
|
if(!p[0])
|
|
throw new Error(`/${c} requires parameters`);
|
|
let id = findUserId(p[0]);
|
|
if(!id)
|
|
throw new Error(`Unknown user ${p[0]}`);
|
|
sendFile(id);
|
|
},
|
|
};
|
|
|
|
/**
|
|
* Test loopback through a TURN relay.
|
|
*
|
|
* @returns {Promise<number>}
|
|
*/
|
|
async function relayTest() {
|
|
if(!serverConnection)
|
|
throw new Error('not connected');
|
|
let conf = Object.assign({}, serverConnection.getRTCConfiguration());
|
|
conf.iceTransportPolicy = 'relay';
|
|
let pc1 = new RTCPeerConnection(conf);
|
|
let pc2 = new RTCPeerConnection(conf);
|
|
pc1.onicecandidate = e => {e.candidate && pc2.addIceCandidate(e.candidate);};
|
|
pc2.onicecandidate = e => {e.candidate && pc1.addIceCandidate(e.candidate);};
|
|
try {
|
|
return await new Promise(async (resolve, reject) => {
|
|
let d1 = pc1.createDataChannel('loopbackTest');
|
|
d1.onopen = e => {
|
|
d1.send(Date.now().toString());
|
|
};
|
|
|
|
let offer = await pc1.createOffer();
|
|
await pc1.setLocalDescription(offer);
|
|
await pc2.setRemoteDescription(pc1.localDescription);
|
|
let answer = await pc2.createAnswer();
|
|
await pc2.setLocalDescription(answer);
|
|
await pc1.setRemoteDescription(pc2.localDescription);
|
|
|
|
pc2.ondatachannel = e => {
|
|
let d2 = e.channel;
|
|
d2.onmessage = e => {
|
|
let t = parseInt(e.data);
|
|
if(isNaN(t))
|
|
reject(new Error('corrupt data'));
|
|
else
|
|
resolve(Date.now() - t);
|
|
}
|
|
}
|
|
|
|
setTimeout(() => reject(new Error('timeout')), 5000);
|
|
})
|
|
} finally {
|
|
pc1.close();
|
|
pc2.close();
|
|
}
|
|
}
|
|
|
|
commands['relay-test'] = {
|
|
f: async (c, r) => {
|
|
localMessage('Relay test in progress...');
|
|
try {
|
|
let s = Date.now();
|
|
let rtt = await relayTest();
|
|
let e = Date.now();
|
|
localMessage(`Relay test successful in ${e-s}ms, RTT ${rtt}ms`);
|
|
} catch(e) {
|
|
localMessage(`Relay test failed: ${e}`);
|
|
}
|
|
}
|
|
}
|
|
|
|
function handleInput() {
|
|
let input = /** @type {HTMLTextAreaElement} */
|
|
(document.getElementById('input'));
|
|
let data = input.value;
|
|
input.value = '';
|
|
|
|
let message, me;
|
|
|
|
if(data === '')
|
|
return;
|
|
|
|
if(data[0] === '/') {
|
|
if(data.length > 1 && data[1] === '/') {
|
|
message = data.slice(1);
|
|
me = false;
|
|
} else {
|
|
let cmd, rest;
|
|
let space = data.indexOf(' ');
|
|
if(space < 0) {
|
|
cmd = data.slice(1);
|
|
rest = '';
|
|
} else {
|
|
cmd = data.slice(1, space);
|
|
rest = data.slice(space + 1);
|
|
}
|
|
|
|
if(cmd === 'me') {
|
|
message = rest;
|
|
me = true;
|
|
} else {
|
|
let c = commands[cmd];
|
|
if(!c) {
|
|
displayError(`Uknown command /${cmd}, type /help for help`);
|
|
return;
|
|
}
|
|
if(c.predicate) {
|
|
let s = c.predicate();
|
|
if(s) {
|
|
displayError(s);
|
|
return;
|
|
}
|
|
}
|
|
try {
|
|
c.f(cmd, rest);
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
message = data;
|
|
me = false;
|
|
}
|
|
|
|
if(!serverConnection || !serverConnection.socket) {
|
|
displayError("Not connected.");
|
|
return;
|
|
}
|
|
|
|
try {
|
|
serverConnection.chat(me ? 'me' : '', '', message);
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e);
|
|
}
|
|
}
|
|
|
|
document.getElementById('inputform').onsubmit = function(e) {
|
|
e.preventDefault();
|
|
handleInput();
|
|
};
|
|
|
|
document.getElementById('input').onkeypress = function(e) {
|
|
if(e.key === 'Enter' && !e.ctrlKey && !e.shiftKey && !e.metaKey) {
|
|
e.preventDefault();
|
|
handleInput();
|
|
}
|
|
};
|
|
|
|
function chatResizer(e) {
|
|
e.preventDefault();
|
|
let full_width = document.getElementById("mainrow").offsetWidth;
|
|
let left = document.getElementById("left");
|
|
let right = document.getElementById("right");
|
|
|
|
let start_x = e.clientX;
|
|
let start_width = left.offsetWidth;
|
|
|
|
function start_drag(e) {
|
|
let left_width = (start_width + e.clientX - start_x) * 100 / full_width;
|
|
// set min chat width to 300px
|
|
let min_left_width = 300 * 100 / full_width;
|
|
if (left_width < min_left_width) {
|
|
return;
|
|
}
|
|
left.style.flex = left_width.toString();
|
|
right.style.flex = (100 - left_width).toString();
|
|
}
|
|
function stop_drag(e) {
|
|
document.documentElement.removeEventListener(
|
|
'mousemove', start_drag, false,
|
|
);
|
|
document.documentElement.removeEventListener(
|
|
'mouseup', stop_drag, false,
|
|
);
|
|
}
|
|
|
|
document.documentElement.addEventListener(
|
|
'mousemove', start_drag, false,
|
|
);
|
|
document.documentElement.addEventListener(
|
|
'mouseup', stop_drag, false,
|
|
);
|
|
}
|
|
|
|
document.getElementById('resizer').addEventListener('mousedown', chatResizer, false);
|
|
|
|
/**
|
|
* @param {unknown} message
|
|
* @param {string} [level]
|
|
*/
|
|
function displayError(message, level) {
|
|
if(!level)
|
|
level = "error";
|
|
var background = 'linear-gradient(to right, #e20a0a, #df2d2d)';
|
|
var position = 'center';
|
|
var gravity = 'top';
|
|
|
|
switch(level) {
|
|
case "info":
|
|
background = 'linear-gradient(to right, #529518, #96c93d)';
|
|
position = 'right';
|
|
gravity = 'bottom';
|
|
break;
|
|
case "warning":
|
|
background = "linear-gradient(to right, #bdc511, #c2cf01)";
|
|
break;
|
|
case "kicked":
|
|
level = "error";
|
|
break;
|
|
}
|
|
|
|
/** @ts-ignore */
|
|
Toastify({
|
|
text: message,
|
|
duration: 4000,
|
|
close: true,
|
|
position: position,
|
|
gravity: gravity,
|
|
style: {
|
|
background: background,
|
|
},
|
|
className: level,
|
|
}).showToast();
|
|
}
|
|
|
|
/**
|
|
* @param {unknown} message
|
|
*/
|
|
function displayWarning(message) {
|
|
return displayError(message, "warning");
|
|
}
|
|
|
|
/**
|
|
* @param {unknown} message
|
|
*/
|
|
function displayMessage(message) {
|
|
return displayError(message, "info");
|
|
}
|
|
|
|
let connecting = false;
|
|
|
|
document.getElementById('userform').onsubmit = async function(e) {
|
|
e.preventDefault();
|
|
if(connecting)
|
|
return;
|
|
connecting = true;
|
|
try {
|
|
await serverConnect();
|
|
} finally {
|
|
connecting = false;
|
|
}
|
|
|
|
if(getInputElement('presentboth').checked)
|
|
presentRequested = 'both';
|
|
else if(getInputElement('presentmike').checked)
|
|
presentRequested = 'mike';
|
|
else
|
|
presentRequested = null;
|
|
|
|
getInputElement('presentoff').checked = true;
|
|
};
|
|
|
|
document.getElementById('disconnectbutton').onclick = function(e) {
|
|
serverConnection.close();
|
|
closeNav();
|
|
};
|
|
|
|
function openNav() {
|
|
document.getElementById("sidebarnav").style.width = "250px";
|
|
}
|
|
|
|
function closeNav() {
|
|
document.getElementById("sidebarnav").style.width = "0";
|
|
}
|
|
|
|
document.getElementById('sidebarCollapse').onclick = function(e) {
|
|
document.getElementById("left-sidebar").classList.toggle("active");
|
|
document.getElementById("mainrow").classList.toggle("full-width-active");
|
|
};
|
|
|
|
document.getElementById('openside').onclick = function(e) {
|
|
e.preventDefault();
|
|
let sidewidth = document.getElementById("sidebarnav").style.width;
|
|
if (sidewidth !== "0px" && sidewidth !== "") {
|
|
closeNav();
|
|
return;
|
|
} else {
|
|
openNav();
|
|
}
|
|
};
|
|
|
|
|
|
document.getElementById('clodeside').onclick = function(e) {
|
|
e.preventDefault();
|
|
closeNav();
|
|
};
|
|
|
|
document.getElementById('collapse-video').onclick = function(e) {
|
|
e.preventDefault();
|
|
setVisibility('collapse-video', false);
|
|
setVisibility('show-video', true);
|
|
hideVideo(true);
|
|
};
|
|
|
|
document.getElementById('show-video').onclick = function(e) {
|
|
e.preventDefault();
|
|
setVisibility('video-container', true);
|
|
setVisibility('collapse-video', true);
|
|
setVisibility('show-video', false);
|
|
};
|
|
|
|
document.getElementById('close-chat').onclick = function(e) {
|
|
e.preventDefault();
|
|
setVisibility('left', false);
|
|
setVisibility('show-chat', true);
|
|
resizePeers();
|
|
};
|
|
|
|
document.getElementById('show-chat').onclick = function(e) {
|
|
e.preventDefault();
|
|
setVisibility('left', true);
|
|
setVisibility('show-chat', false);
|
|
resizePeers();
|
|
};
|
|
|
|
async function serverConnect() {
|
|
if(serverConnection && serverConnection.socket)
|
|
serverConnection.close();
|
|
serverConnection = new ServerConnection();
|
|
serverConnection.onconnected = gotConnected;
|
|
serverConnection.onpeerconnection = onPeerConnection;
|
|
serverConnection.onclose = gotClose;
|
|
serverConnection.ondownstream = gotDownStream;
|
|
serverConnection.onuser = gotUser;
|
|
serverConnection.onjoined = gotJoined;
|
|
serverConnection.onchat = addToChatbox;
|
|
serverConnection.onusermessage = gotUserMessage;
|
|
|
|
let url = `ws${location.protocol === 'https:' ? 's' : ''}://${location.host}/ws`;
|
|
try {
|
|
await serverConnection.connect(url);
|
|
} catch(e) {
|
|
console.error(e);
|
|
displayError(e.message ? e.message : "Couldn't connect to " + url);
|
|
}
|
|
}
|
|
|
|
async function start() {
|
|
group = decodeURIComponent(
|
|
location.pathname.replace(/^\/[a-z]*\//, '').replace(/\/$/, '')
|
|
);
|
|
|
|
/** @type {Object} */
|
|
try {
|
|
let r = await fetch(".status.json")
|
|
if(!r.ok)
|
|
throw new Error(`${r.status} ${r.statusText}`);
|
|
groupStatus = await r.json()
|
|
} catch(e) {
|
|
console.error(e);
|
|
return;
|
|
}
|
|
|
|
let parms = new URLSearchParams(window.location.search);
|
|
if(window.location.search)
|
|
window.history.replaceState(null, '', window.location.pathname);
|
|
setTitle(groupStatus.displayName || capitalise(group));
|
|
|
|
addFilters();
|
|
setMediaChoices(false).then(e => reflectSettings());
|
|
|
|
if(parms.has('token')) {
|
|
token = parms.get('token');
|
|
await serverConnect();
|
|
} else if(groupStatus.authPortal) {
|
|
window.location.href = groupStatus.authPortal;
|
|
} else {
|
|
let container = document.getElementById("login-container");
|
|
container.classList.remove('invisible');
|
|
}
|
|
setViewportHeight();
|
|
}
|
|
|
|
start();
|