add buckets because debug.js

src/media/js/buckets.js

@@ -0,0 +1,116 @@
+define('buckets', [], function() {
+
+    function noop() {return '';}
+
+    var aelem = document.createElement('audio');
+    var velem = document.createElement('video');
+
+    // Compatibilty with PhantomJS, which doesn't implement canPlayType
+    if (!('canPlayType' in aelem)) {
+        velem = aelem = {canPlayType: noop};
+    }
+
+    var prefixes = ['moz', 'webkit', 'ms'];
+
+    function prefixed(property, context) {
+        if (!context) {
+            context = window;
+        }
+        try {
+            if (property in context) {
+                return context[property];
+            }
+        } catch(e) {
+            return false;
+        }
+        // Camel-case it.
+        property = property[0].toUpperCase() + property.substr(1);
+
+        for (var i = 0, e; e = prefixes[i++];) {
+            try {
+                if ((e + property) in context) {
+                    return context[e + property];
+                }
+            } catch(err) {
+                return false;
+            }
+        }
+    }
+
+    var has_gum = prefixed('getUserMedia', navigator);
+    if (has_gum && navigator.mozGetUserMedia) {
+        // Gecko 18's gum is a noop.
+        try {
+            navigator.mozGetUserMedia(); // Should throw a TypeError.
+            has_gum = false;
+        } catch(e) {}
+    }
+
+    var audiocontext = window.webkitAudioContext || window.AudioContext;
+    var has_audiocontext = !!(audiocontext);
+
+    var capabilities = [
+        'mozApps' in navigator,
+        'mozApps' in navigator && navigator.mozApps.installPackage,
+        'mozPay' in navigator,
+        // FF 18 and earlier throw an exception on this key
+        (function() {try{return !!window.MozActivity;} catch(e) {return false;}})(),
+        'ondevicelight' in window,
+        'ArchiveReader' in window,
+        'battery' in navigator,
+        'mozBluetooth' in navigator,
+        'mozContacts' in navigator,
+        'getDeviceStorage' in navigator,
+        (function() { try{return window.mozIndexedDB || window.indexedDB;} catch(e) {return false;}})(),
+        'geolocation' in navigator && 'getCurrentPosition' in navigator.geolocation,
+        'addIdleObserver' in navigator && 'removeIdleObserver' in navigator,
+        'mozConnection' in navigator && (navigator.mozConnection.metered === true || navigator.mozConnection.metered === false),
+        'mozNetworkStats' in navigator,
+        'ondeviceproximity' in window,
+        'mozPush' in navigator || 'push' in navigator,
+        'ondeviceorientation' in window,
+        'mozTime' in navigator,
+        'vibrate' in navigator,
+        'mozFM' in navigator || 'mozFMRadio' in navigator,
+        'mozSms' in navigator,
+        !!(('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch),
+        window.screen.width <= 540 && window.screen.height <= 960,  // qHD support
+        !!aelem.canPlayType('audio/mpeg').replace(/^no$/, ''),  // mp3 support
+        !!(window.Audio),  // Audio Data API
+        has_audiocontext,  // Web Audio API
+        !!velem.canPlayType('video/mp4; codecs="avc1.42E01E"').replace(/^no$/,''),  // H.264
+        !!velem.canPlayType('video/webm; codecs="vp8"').replace(/^no$/,''),  // WebM
+        !!prefixed('cancelFullScreen', document),  // Full Screen API
+        !!prefixed('getGamepads', navigator),  // Gamepad API
+        !!(prefixed('persistentStorage') || window.StorageInfo),  // Quota Management API
+        // WebRTC:
+        has_gum && !prefixed('cameras', navigator),  // Can take photos
+        has_gum && has_audiocontext &&
+            !!((new audiocontext()).createMediaStreamSource),  // Can record audio
+        has_gum && false,  // XXX: Google WebRTC issue 2088
+        'MediaStream' in window,
+        'DataChannel' in window,
+        prefixed('RTCPeerConnection'),
+        prefixed('SpeechSynthesisEvent'),  // WebSpeech Synthesis
+        prefixed('SpeechInputEvent'),  // WebSpeech Input
+        prefixed('requestPointerLock', document.documentElement),  // Pointer lock
+        prefixed('notification', navigator),  // TODO: window.webkitNotifications?
+        prefixed('alarms', navigator),  // Alarms
+        'mozSystem' in (new XMLHttpRequest()),  // mozSystemXHR
+        prefixed('TCPSocket', navigator),  // mozTCPSocket/mozTCPSocketServer
+        prefixed('mozInputMethod', navigator),
+        prefixed('mozMobileConnections', navigator)
+    ];
+
+    var profile = parseInt(capabilities.map(function(x) {return !!x ? '1' : '0';}).join(''), 2).toString(16);
+    // Add a count.
+    profile += '.' + capabilities.length;
+    // Add a version number.
+    profile += '.4';
+
+    return {
+        capabilities: capabilities,
+        profile: profile
+    };
+
+});