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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| // -*- indent-tabs-mode: nil; js-indent-level: 2 -*- | ||
| /* This Source Code Form is subject to the terms of the Mozilla Public | ||
| * License, v. 2.0. If a copy of the MPL was not distributed with this file, | ||
| * You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
|
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| "use strict"; | ||
|
|
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| this.EXPORTED_SYMBOLS = ["PresentationApp"]; | ||
|
|
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| const { classes: Cc, interfaces: Ci, utils: Cu } = Components; | ||
|
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| Cu.import("resource://gre/modules/Services.jsm"); | ||
| Cu.import("resource://gre/modules/XPCOMUtils.jsm"); | ||
|
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| XPCOMUtils.defineLazyGetter(this, "sysInfo", () => { | ||
| return Cc["@mozilla.org/system-info;1"].getService(Ci.nsIPropertyBag2); | ||
| }); | ||
|
|
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| const DEBUG = false; | ||
|
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| const STATE_UNINIT = "uninitialized" // RemoteMedia status | ||
| const STATE_STARTED = "started"; // RemoteMedia status | ||
| const STATE_PAUSED = "paused"; // RemoteMedia status | ||
| const STATE_SHUTDOWN = "shutdown"; // RemoteMedia status | ||
|
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| function debug(msg) { | ||
| Services.console.logStringMessage("PresentationApp: " + msg); | ||
| } | ||
|
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| // PresentationApp is a wrapper for interacting with a Presentation Receiver Device. | ||
| function PresentationApp(service, request) { | ||
| this.service = service; | ||
| this.request = request; | ||
| } | ||
|
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| PresentationApp.prototype = { | ||
| start: function start(callback) { | ||
| this.request.startWithDevice(this.service.uuid) | ||
| .then((session) => { | ||
| this._session = session; | ||
| if (callback) { | ||
| callback(true); | ||
| } | ||
| }, () => { | ||
| if (callback) { | ||
| callback(false); | ||
| } | ||
| }); | ||
| }, | ||
|
|
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| stop: function stop(callback) { | ||
| if (this._session && this._session.state === "connected") { | ||
| this._session.terminate(); | ||
| } | ||
|
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| delete this._session; | ||
|
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| if (callback) { | ||
| callback(true); | ||
| } | ||
| }, | ||
|
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| remoteMedia: function remoteMedia(callback, listener) { | ||
| if (callback) { | ||
| if (!this._session) { | ||
| callback(); | ||
| return; | ||
| } | ||
|
|
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| callback(new RemoteMedia(this._session, listener)); | ||
| } | ||
| } | ||
| } | ||
|
|
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| /* RemoteMedia provides a wrapper for using Presentation API to control Firefox TV app. | ||
| * The server implementation must be built into the Firefox TV receiver app. | ||
| * see https://github.com/mozilla-b2g/gaia/tree/master/tv_apps/fling-player | ||
| */ | ||
| function RemoteMedia(session, listener) { | ||
| this._session = session ; | ||
| this._listener = listener; | ||
| this._status = STATE_UNINIT; | ||
|
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| this._session.addEventListener("message", this); | ||
| this._session.addEventListener("statechange", this); | ||
|
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| if (this._listener && "onRemoteMediaStart" in this._listener) { | ||
| Services.tm.mainThread.dispatch((function() { | ||
| this._listener.onRemoteMediaStart(this); | ||
| }).bind(this), Ci.nsIThread.DISPATCH_NORMAL); | ||
| } | ||
| } | ||
|
|
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| RemoteMedia.prototype = { | ||
| _seq: 0, | ||
|
|
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| handleEvent: function(e) { | ||
| switch (e.type) { | ||
| case "message": | ||
| this._onmessage(e); | ||
| break; | ||
| case "statechange": | ||
| this._onstatechange(e); | ||
| break; | ||
| } | ||
| }, | ||
|
|
||
| _onmessage: function(e) { | ||
| DEBUG && debug("onmessage: " + e.data); | ||
| if (this.status === STATE_SHUTDOWN) { | ||
| return; | ||
| } | ||
|
|
||
| if (e.data.indexOf("stopped") > -1) { | ||
| if (this.status !== STATE_PAUSED) { | ||
| this._status = STATE_PAUSED; | ||
| if (this._listener && "onRemoteMediaStatus" in this._listener) { | ||
| this._listener.onRemoteMediaStatus(this); | ||
| } | ||
| } | ||
| } else if (e.data.indexOf("playing") > -1) { | ||
| if (this.status !== STATE_STARTED) { | ||
| this._status = STATE_STARTED; | ||
| if (this._listener && "onRemoteMediaStatus" in this._listener) { | ||
| this._listener.onRemoteMediaStatus(this); | ||
| } | ||
| } | ||
| } | ||
| }, | ||
|
|
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| _onstatechange: function(e) { | ||
| DEBUG && debug("onstatechange: " + this._session.state); | ||
| if (this._session.state !== "connected") { | ||
| this._status = STATE_SHUTDOWN; | ||
| if (this._listener && "onRemoteMediaStop" in this._listener) { | ||
| this._listener.onRemoteMediaStop(this); | ||
| } | ||
| } | ||
| }, | ||
|
|
||
| _sendCommand: function(command, data) { | ||
| let msg = { | ||
| 'type': command, | ||
| 'seq': ++this._seq | ||
| }; | ||
|
|
||
| if (data) { | ||
| for (var k in data) { | ||
| msg[k] = data[k]; | ||
| } | ||
| } | ||
|
|
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| let raw = JSON.stringify(msg); | ||
| DEBUG && debug("send command: " + raw); | ||
|
|
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| this._session.send(raw); | ||
| }, | ||
|
|
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| shutdown: function shutdown() { | ||
| DEBUG && debug("RemoteMedia - shutdown"); | ||
| this._sendCommand("close"); | ||
| }, | ||
|
|
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| play: function play() { | ||
| DEBUG && debug("RemoteMedia - play"); | ||
| this._sendCommand("play"); | ||
| }, | ||
|
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||
| pause: function pause() { | ||
| DEBUG && debug("RemoteMedia - pause"); | ||
| this._sendCommand("pause"); | ||
| }, | ||
|
|
||
| load: function load(data) { | ||
| DEBUG && debug("RemoteMedia - load: " + data); | ||
| this._sendCommand("load", { "url": data.source }); | ||
|
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| let deviceName; | ||
| if (Services.appinfo.widgetToolkit == "android") { | ||
| deviceName = sysInfo.get("device"); | ||
| } else { | ||
| deviceName = sysInfo.get("host"); | ||
| } | ||
| this._sendCommand("device-info", { "displayName": deviceName }); | ||
| }, | ||
|
|
||
| get status() { | ||
| return this._status; | ||
| } | ||
| } |
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