mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
680 lines
18 KiB
JavaScript
680 lines
18 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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const PC_CONTRACT = "@mozilla.org/dom/peerconnection;1";
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const PC_ICE_CONTRACT = "@mozilla.org/dom/rtcicecandidate;1";
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const PC_SESSION_CONTRACT = "@mozilla.org/dom/rtcsessiondescription;1";
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const PC_CID = Components.ID("{7cb2b368-b1ce-4560-acac-8e0dbda7d3d0}");
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const PC_ICE_CID = Components.ID("{8c5dbd70-2c8e-4ecb-a5ad-2fc919099f01}");
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const PC_SESSION_CID = Components.ID("{5f21ffd9-b73f-4ba0-a685-56b4667aaf1c}");
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// Global list of PeerConnection objects, so they can be cleaned up when
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// a page is torn down. (Maps inner window ID to an array of PC objects).
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function GlobalPCList() {
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this._list = {};
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Services.obs.addObserver(this, "inner-window-destroyed", true);
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}
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GlobalPCList.prototype = {
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver,
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Ci.nsISupportsWeakReference]),
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addPC: function(pc) {
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let winID = pc._winID;
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if (this._list[winID]) {
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this._list[winID].push(pc);
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} else {
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this._list[winID] = [pc];
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}
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},
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observe: function(subject, topic, data) {
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if (topic != "inner-window-destroyed") {
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return;
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}
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let winID = subject.QueryInterface(Ci.nsISupportsPRUint64).data;
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if (this._list[winID]) {
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this._list[winID].forEach(function(pc) {
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pc._pc.close();
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delete pc._observer;
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pc._pc = null;
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});
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delete this._list[winID];
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}
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}
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};
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let _globalPCList = new GlobalPCList();
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function IceCandidate(candidate) {
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this.candidate = candidate;
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this.sdpMid = null;
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this.sdpMLineIndex = null;
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}
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IceCandidate.prototype = {
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classID: PC_ICE_CID,
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classInfo: XPCOMUtils.generateCI({classID: PC_ICE_CID,
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contractID: PC_ICE_CONTRACT,
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classDescription: "IceCandidate",
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interfaces: [
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Ci.nsIDOMRTCIceCandidate
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],
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flags: Ci.nsIClassInfo.DOM_OBJECT}),
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QueryInterface: XPCOMUtils.generateQI([
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Ci.nsIDOMRTCIceCandidate, Ci.nsIDOMGlobalObjectConstructor
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]),
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constructor: function(win, cand, mid, mline) {
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if (this._win) {
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throw new Error("Constructor already called");
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}
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this._win = win;
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this.candidate = cand;
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this.sdpMid = mid;
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this.sdpMLineIndex = mline;
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}
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};
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function SessionDescription(type, sdp) {
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this.type = type;
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this.sdp = sdp;
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}
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SessionDescription.prototype = {
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classID: PC_SESSION_CID,
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classInfo: XPCOMUtils.generateCI({classID: PC_SESSION_CID,
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contractID: PC_SESSION_CONTRACT,
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classDescription: "SessionDescription",
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interfaces: [
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Ci.nsIDOMRTCSessionDescription
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],
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flags: Ci.nsIClassInfo.DOM_OBJECT}),
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QueryInterface: XPCOMUtils.generateQI([
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Ci.nsIDOMRTCSessionDescription, Ci.nsIDOMGlobalObjectConstructor
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]),
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constructor: function(win, type, sdp) {
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if (this._win) {
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throw new Error("Constructor already called");
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}
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this._win = win;
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this.type = type;
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this.sdp = sdp;
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},
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toString: function() {
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return JSON.stringify({
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type: this.type, sdp: this.sdp
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});
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}
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};
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function PeerConnection() {
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this._queue = [];
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this._pc = null;
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this._observer = null;
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this._closed = false;
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this._onCreateOfferSuccess = null;
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this._onCreateOfferFailure = null;
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this._onCreateAnswerSuccess = null;
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this._onCreateAnswerFailure = null;
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/**
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* Everytime we get a request from content, we put it in the queue. If
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* there are no pending operations though, we will execute it immediately.
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* In PeerConnectionObserver, whenever we are notified that an operation
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* has finished, we will check the queue for the next operation and execute
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* if neccesary. The _pending flag indicates whether an operation is currently
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* in progress.
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*/
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this._pending = false;
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// Public attributes.
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this.onaddstream = null;
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this.onremovestream = null;
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this.onicecandidate = null;
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this.onstatechange = null;
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this.ongatheringchange = null;
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this.onicechange = null;
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this.remoteDescription = null;
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// Data channel.
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this.ondatachannel = null;
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this.onconnection = null;
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this.onclosedconnection = null;
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}
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PeerConnection.prototype = {
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classID: PC_CID,
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classInfo: XPCOMUtils.generateCI({classID: PC_CID,
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contractID: PC_CONTRACT,
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classDescription: "PeerConnection",
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interfaces: [
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Ci.nsIDOMRTCPeerConnection
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],
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flags: Ci.nsIClassInfo.DOM_OBJECT}),
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QueryInterface: XPCOMUtils.generateQI([
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Ci.nsIDOMRTCPeerConnection, Ci.nsIDOMGlobalObjectConstructor
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]),
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// Constructor is an explicit function, because of nsIDOMGlobalObjectConstructor.
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constructor: function(win) {
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if (!Services.prefs.getBoolPref("media.peerconnection.enabled")) {
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throw new Error("PeerConnection not enabled (did you set the pref?)");
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}
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if (this._win) {
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throw new Error("Constructor already called");
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}
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this._pc = Cc["@mozilla.org/peerconnection;1"].
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createInstance(Ci.IPeerConnection);
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this._observer = new PeerConnectionObserver(this);
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// Nothing starts until ICE gathering completes.
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this._queueOrRun({
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func: this._pc.initialize,
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args: [this._observer, win, Services.tm.currentThread],
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wait: true
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});
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this._win = win;
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this._winID = this._win.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindowUtils).currentInnerWindowID;
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// Add a reference to the PeerConnection to global list.
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_globalPCList.addPC(this);
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},
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/**
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* Add a function to the queue or run it immediately if the queue is empty.
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* Argument is an object with the func, args and wait properties; wait should
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* be set to true if the function has a success/error callback that will
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* call _executeNext, false if it doesn't have a callback.
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*/
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_queueOrRun: function(obj) {
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if (this._closed) {
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return;
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}
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if (!this._pending) {
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obj.func.apply(this, obj.args);
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if (obj.wait) {
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this._pending = true;
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}
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} else {
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this._queue.push(obj);
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}
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},
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// Pick the next item from the queue and run it.
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_executeNext: function() {
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if (this._queue.length) {
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let obj = this._queue.shift();
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obj.func.apply(this, obj.args);
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if (!obj.wait) {
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this._executeNext();
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}
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} else {
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this._pending = false;
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}
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},
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/**
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* Constraints look like this:
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*
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* {
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* mandatory: {"foo": true, "bar": 10, "baz": "boo"},
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* optional: [{"foo": true}, {"bar": 10}]
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* }
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*
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* We check for basic structure but not the validity of the constraints
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* themselves before passing them along to C++.
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*/
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_validateConstraints: function(constraints) {
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function isObject(obj) {
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return obj && (typeof obj === "object");
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}
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function isArray(obj) {
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return isObject(obj) &&
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(Object.prototype.toString.call(obj) === "[object Array]");
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}
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if (!isObject(constraints)) {
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return false;
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}
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if (constraints.mandatory && !isObject(constraints.mandatory)) {
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return false;
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}
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if (constraints.optional && !isArray(constraints.optional)) {
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return false;
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}
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return true;
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},
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createOffer: function(onSuccess, onError, constraints) {
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if (this._onCreateOfferSuccess) {
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throw new Error("createOffer already called");
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}
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if (!constraints) {
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constraints = {};
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}
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if (!this._validateConstraints(constraints)) {
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throw new Error("createOffer passed invalid constraints");
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}
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this._onCreateOfferSuccess = onSuccess;
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this._onCreateOfferFailure = onError;
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this._queueOrRun({
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func: this._pc.createOffer,
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args: [constraints],
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wait: true
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});
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},
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createAnswer: function(onSuccess, onError, constraints, provisional) {
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if (this._onCreateAnswerSuccess) {
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throw new Error("createAnswer already called");
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}
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if (!this.remoteDescription) {
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throw new Error("setRemoteDescription not called");
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}
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if (this.remoteDescription.type != "offer") {
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throw new Error("No outstanding offer");
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}
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if (!constraints) {
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constraints = {};
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}
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if (!this._validateConstraints(constraints)) {
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throw new Error("createAnswer passed invalid constraints");
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}
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this._onCreateAnswerSuccess = onSuccess;
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this._onCreateAnswerFailure = onError;
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if (!provisional) {
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provisional = false;
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}
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// TODO: Implement provisional answer.
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this._queueOrRun({
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func: this._pc.createAnswer,
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args: [constraints],
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wait: true
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});
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},
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setLocalDescription: function(desc, onSuccess, onError) {
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if (this._onSetLocalDescriptionSuccess) {
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throw new Error("setLocalDescription already called");
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}
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this._onSetLocalDescriptionSuccess = onSuccess;
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this._onSetLocalDescriptionFailure = onError;
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let type;
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switch (desc.type) {
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case "offer":
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type = Ci.IPeerConnection.kActionOffer;
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break;
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case "answer":
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type = Ci.IPeerConnection.kActionAnswer;
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break;
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default:
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throw new Error(
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"Invalid type " + desc.type + " provided to setLocalDescription"
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);
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break;
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}
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this._queueOrRun({
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func: this._pc.setLocalDescription,
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args: [type, desc.sdp],
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wait: true
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});
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},
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setRemoteDescription: function(desc, onSuccess, onError) {
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if (this._onSetRemoteDescriptionSuccess) {
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throw new Error("setRemoteDescription already called");
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}
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this._onSetRemoteDescriptionSuccess = onSuccess;
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this._onSetRemoteDescriptionFailure = onError;
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let type;
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switch (desc.type) {
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case "offer":
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type = Ci.IPeerConnection.kActionOffer;
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break;
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case "answer":
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type = Ci.IPeerConnection.kActionAnswer;
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break;
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default:
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throw new Error(
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"Invalid type " + desc.type + " provided to setRemoteDescription"
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);
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break;
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}
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this.remoteDescription = {
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type: desc.type, sdp: desc.sdp,
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__exposedProps__: { type: "rw", sdp: "rw" }
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};
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this._queueOrRun({
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func: this._pc.setRemoteDescription,
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args: [type, desc.sdp],
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wait: true
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});
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},
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updateIce: function(config, constraints, restart) {
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return Cr.NS_ERROR_NOT_IMPLEMENTED;
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},
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addIceCandidate: function(cand) {
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if (!cand) {
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throw "Invalid candidate passed to addIceCandidate!";
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}
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if (!cand.candidate || !cand.sdpMid || !cand.sdpMLineIndex) {
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throw "Invalid candidate passed to addIceCandidate!";
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}
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this._queueOrRun({
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func: this._pc.addIceCandidate,
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args: [cand.candidate, cand.sdpMid, cand.sdpMLineIndex],
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wait: false
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});
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},
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addStream: function(stream, constraints) {
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// TODO: Implement constraints.
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this._queueOrRun({
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func: this._pc.addStream,
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args: [stream],
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wait: false
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});
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},
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removeStream: function(stream) {
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this._queueOrRun({
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func: this._pc.removeStream,
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args: [stream],
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wait: false
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});
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},
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close: function() {
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this._queueOrRun({
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func: this._pc.close,
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args: [],
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wait: false
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});
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this._closed = true;
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},
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get localStreams() {
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return this._pc.localStreams;
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},
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get remoteStreams() {
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return this._pc.remoteStreams;
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},
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createDataChannel: function(label, dict) {
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if (dict &&
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dict.maxRetransmitTime != undefined &&
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dict.maxRetransmitNum != undefined) {
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throw new Error("Both maxRetransmitTime and maxRetransmitNum cannot be provided");
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}
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// Must determine the type where we still know if entries are undefined.
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let type;
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if (dict.maxRetransmitTime != undefined) {
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type = Ci.IPeerConnection.kDataChannelPartialReliableTimed;
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} else if (dict.maxRetransmitNum != undefined) {
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type = Ci.IPeerConnection.kDataChannelPartialReliableRexmit;
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} else {
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type = Ci.IPeerConnection.kDataChannelReliable;
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}
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// Synchronous since it doesn't block.
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let channel = this._pc.createDataChannel(
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label, type, dict.outOfOrderAllowed, dict.maxRetransmitTime,
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dict.maxRetransmitNum
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);
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return channel;
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},
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connectDataConnection: function(localport, remoteport, numstreams) {
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if (numstreams == undefined || numstreams <= 0) {
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numstreams = 16;
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}
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this._queueOrRun({
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func: this._pc.connectDataConnection,
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args: [localport, remoteport, numstreams],
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wait: false
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});
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}
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};
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// This is a seperate object because we don't want to expose it to DOM.
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function PeerConnectionObserver(dompc) {
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this._dompc = dompc;
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}
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PeerConnectionObserver.prototype = {
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QueryInterface: XPCOMUtils.generateQI([Ci.IPeerConnectionObserver]),
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onCreateOfferSuccess: function(offer) {
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if (this._dompc._onCreateOfferSuccess) {
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try {
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this._dompc._onCreateOfferSuccess.onCallback({
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type: "offer", sdp: offer,
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__exposedProps__: { type: "rw", sdp: "rw" }
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});
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} catch(e) {}
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}
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this._dompc._executeNext();
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},
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onCreateOfferError: function(code) {
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if (this._dompc._onCreateOfferFailure) {
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try {
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this._dompc._onCreateOfferFailure.onCallback(code);
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} catch(e) {}
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}
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this._dompc._executeNext();
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},
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onCreateAnswerSuccess: function(answer) {
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if (this._dompc._onCreateAnswerSuccess) {
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try {
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this._dompc._onCreateAnswerSuccess.onCallback({
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type: "answer", sdp: answer,
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__exposedProps__: { type: "rw", sdp: "rw" }
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});
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} catch(e) {}
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}
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this._dompc._executeNext();
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},
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onCreateAnswerError: function(code) {
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if (this._dompc._onCreateAnswerFailure) {
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try {
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this._dompc._onCreateAnswerFailure.onCallback(code);
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} catch(e) {}
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}
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this._dompc._executeNext();
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},
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onSetLocalDescriptionSuccess: function(code) {
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if (this._dompc._onSetLocalDescriptionSuccess) {
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try {
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this._dompc._onSetLocalDescriptionSuccess.onCallback(code);
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} catch(e) {}
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}
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this._dompc._executeNext();
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},
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onSetRemoteDescriptionSuccess: function(code) {
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if (this._dompc._onSetRemoteDescriptionSuccess) {
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try {
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this._dompc._onSetRemoteDescriptionSuccess.onCallback(code);
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} catch(e) {}
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}
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this._dompc._executeNext();
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},
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onSetLocalDescriptionError: function(code) {
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if (this._dompc._onSetLocalDescriptionFailure) {
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try {
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this._dompc._onSetLocalDescriptionFailure.onCallback(code);
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} catch(e) {}
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}
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this._dompc._executeNext();
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},
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onSetRemoteDescriptionError: function(code) {
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if (this._dompc._onSetRemoteDescriptionFailure) {
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this._dompc._onSetRemoteDescriptionFailure.onCallback(code);
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}
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this._dompc._executeNext();
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},
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onStateChange: function(state) {
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|
if (state != Ci.IPeerConnectionObserver.kIceState) {
|
|
return;
|
|
}
|
|
|
|
let self = this;
|
|
let iceCb = function() {};
|
|
let iceGatherCb = function() {};
|
|
if (this._dompc.onicechange) {
|
|
iceCb = function(args) {
|
|
try {
|
|
self._dompc.onicechange(args);
|
|
} catch(e) {}
|
|
};
|
|
}
|
|
if (this._dompc.ongatheringchange) {
|
|
iceGatherCb = function(args) {
|
|
try {
|
|
self._dompc.ongatheringchange(args);
|
|
} catch(e) {}
|
|
};
|
|
}
|
|
|
|
switch (this._dompc._pc.iceState) {
|
|
case Ci.IPeerConnection.kIceGathering:
|
|
iceGatherCb("gathering");
|
|
break;
|
|
case Ci.IPeerConnection.kIceWaiting:
|
|
iceCb("starting");
|
|
this._dompc._executeNext();
|
|
break;
|
|
case Ci.IPeerConnection.kIceChecking:
|
|
iceCb("checking");
|
|
this._dompc._executeNext();
|
|
break;
|
|
case Ci.IPeerConnection.kIceConnected:
|
|
// ICE gathering complete.
|
|
iceCb("connected");
|
|
iceGatherCb("complete");
|
|
this._dompc._executeNext();
|
|
break;
|
|
case Ci.IPeerConnection.kIceFailed:
|
|
iceCb("failed");
|
|
break;
|
|
default:
|
|
// Unknown state!
|
|
break;
|
|
}
|
|
},
|
|
|
|
onAddStream: function(stream, type) {
|
|
if (this._dompc.onaddstream) {
|
|
try {
|
|
this._dompc.onaddstream.onCallback({
|
|
stream: stream, type: type,
|
|
__exposedProps__: { stream: "r", type: "r" }
|
|
});
|
|
} catch(e) {}
|
|
}
|
|
this._dompc._executeNext();
|
|
},
|
|
|
|
onRemoveStream: function(stream, type) {
|
|
if (this._dompc.onremovestream) {
|
|
try {
|
|
this._dompc.onremovestream.onCallback({
|
|
stream: stream, type: type,
|
|
__exposedProps__: { stream: "r", type: "r" }
|
|
});
|
|
} catch(e) {}
|
|
}
|
|
this._dompc._executeNext();
|
|
},
|
|
|
|
foundIceCandidate: function(cand) {
|
|
if (this._dompc.onicecandidate) {
|
|
try {
|
|
this._dompc.onicecandidate.onCallback({
|
|
candidate: cand,
|
|
__exposedProps__: { candidate: "rw" }
|
|
});
|
|
} catch(e) {}
|
|
}
|
|
this._dompc._executeNext();
|
|
},
|
|
|
|
notifyDataChannel: function(channel) {
|
|
if (this._dompc.ondatachannel) {
|
|
try {
|
|
this._dompc.ondatachannel.onCallback(channel);
|
|
} catch(e) {}
|
|
}
|
|
this._dompc._executeNext();
|
|
},
|
|
|
|
notifyConnection: function() {
|
|
if (this._dompc.onconnection) {
|
|
try {
|
|
this._dompc.onconnection.onCallback();
|
|
} catch(e) {}
|
|
}
|
|
this._dompc._executeNext();
|
|
},
|
|
|
|
notifyClosedConnection: function() {
|
|
if (this._dompc.onclosedconnection) {
|
|
try {
|
|
this._dompc.onclosedconnection.onCallback();
|
|
} catch(e) {}
|
|
}
|
|
this._dompc._executeNext();
|
|
}
|
|
};
|
|
|
|
this.NSGetFactory = XPCOMUtils.generateNSGetFactory(
|
|
[IceCandidate, SessionDescription, PeerConnection]
|
|
);
|