fosdem2015/index.html

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   5   <meta name="Author" content="KaiRo - Robert Kaiser">
   6   <title>Firefox OS Tricorder</title>
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   9   <link rel="contents" href="#index" title="Overview">
  10   <link rel="index" id="link-toc" href="#toc" title="Contents">
  11   <link rel="start" id="link-start" href="#index" title="Start">
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  13 <body onload="docLoaded();">
  14 <header id="header"><div id="header-text">Tricorder</div>
  15   <div id="subheader-text"></div>
  16   <a id="headerlogo" href="#index" title="Startseite">Mozilla</a>
  17 </header>
  18 <nav id="slidenav">
  19   <a href="#toc" id="nav-toc" accesskey="t">toc</a> ||
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  22   <span id="nav-prev-nolink" class="nolink">&lt; back</span> |
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  26
  27 <article id="toc" title="Table of Contents">
  28 <h1>Table of Contents</h1>
  29 <h2>Firefox OS Tricorder</h2>
  30
  31 <div class="captionedbox">
  32 <p class="captionedbox-caption">The following slides are available in this presentation:</p>
  33 <div class="captionedbox-content">
  34 <ul id="toc-list">
  35 </ul>
  36 </article>
  37
  38 <article id="index" title="Start Page">
  39 <h1>Firefox OS Tricorder</h1>
  40 <h2>Reading Device Sensor Data in JavaScript</h2>
  41
  42 <div class="simplebox">
  43 <mark><a href="http://home.kairo.at/">Robert Kaiser</a></mark>,
  44 "KaiRo" &lt;kairo@kairo.at&gt;
  45 <br><small>Program Manager, Mozilla QA</small>
  46 </div>
  47
  48 <div class="captionedbox">
  49 <p class="captionedbox-caption">Slides:
  50   <a href="http://slides.kairo.at/fosdem2015/">http://slides.kairo.at/fosdem2015/</a></p>
  51 <div class="captionedbox-content small">
  52 <ul class="small">
  53   <li>Created for
  54     <a href="http://fosdem.org/2015/schedule/track/mozilla/">Mozilla
  55     Developer Room</a> at <a href="http://www.fosdem.org/">FOSDEM 2015</a> in
  56     Brussels.</li>
  57   <li>Written in HTML 5 with CSS 3 and JavaScript.</li>
  58   <li>Navigation via links on all slides, via access keys
  59    (e.g. "n"/Alt+Shift+N for "next") or back/forward arrow keys</li>
  60   <li><a href="#toc">Contents</a></li>
  61   <li><a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/at/"><img
  62         alt="Licensed under CC-BY-SA," style="border-width:0;vertical-align:bottom;"
  63         src="cc-by-sa-80x15.png"></a> 01/2015 Robert Kaiser -
  64     "Mozilla", "Firefox" and their logos are
  65     <a href="http://www.mozilla.org/foundation/trademarks/list.html">trademarks
  66     of the Mozilla Foundation</a>; <a href="http://www.startrek.com/">Star Trek</a>
  67     and related items are trademarks of
  68     <a href="http://www.paramount.com/">Paramount Pictures</a>.</li>
  69 </ul>
  70 </div>
  71 </div>
  72 </article>
  73
  74 <article id="tricorder" title="Tricorder">
  75 <h1>What is a Tricorder?</h1>
  76
  77 <div class="simplebox">
  78 <img src="starfleet_tricorder_2370.jpg" class="slidepic"
  79  alt="Starfleet Tricorder, 2370">
  80 <p>Sensor device as seen on "Star Trek"</p>
  81 <p>Displays whatever data is needed at plot speeds and resolutions.</p>
  82 <p class="ensurepicinbox"></p>
  83 </div>
  84 </article>
  85
  86 <article id="fxos-tricorder" title="Firefox OS Tricorder">
  87 <h1>Firefox OS Tricorder App</h1>
  88
  89 <div class="simplebox">
  90 <p>Displays data from device sensors as exposed by WebAPIs</p>
  91 <p><a href="https://marketplace.firefox.com/app/tricorder/">marketplace.firefox.com/app/tricorder/</a></p>
  92 <p>Code: <a href="https://github.com/KaiRo-at/tricorder">github.com/KaiRo-at/tricorder</a></p>
  93 </div>
  94 </article>
  95
  96 <article id="ui" title="UI">
  97 <h1>Firefox OS Tricorder UI</h1>
  98
  99 <div class="simplebox cent">
 100 <img src="tricorder-ui.svg"
 101      alt="Tricorder UI description">
 102 </div>
 103 </article>
 104
 105 <article id="module" title="Module">
 106 <h1>Module</h1>
 107
 108 <div class="simplebox">
 109 <ul>
 110   <li>HTML (switch, display)</li>
 111   <li>JS Object
 112     <ul>
 113       <li>2 Methods: activate(), deactivate()</li>
 114     </ul>
 115   </li>
 116 </ul>
 117 </div>
 118 </article>
 119
 120 <article id="position" title="Position Module">
 121 <h1>Position Module</h1>
 122
 123 <div class="simplebox">
 124 <p>GPS, WiFi/Cell Location</p>
 125 <p>API: <a href="https://developer.mozilla.org/en-US/docs/Web/API/Geolocation">Geolocation</a></p>
 126 <p>Permission: geolocation</p>
 127 </div>
 128 </article>
 129
 130 <article id="position-code" title="Position: Code">
 131 <h1>Position: Code</h1>
 132
 133 <div class="simplebox">
 134 <pre>
 135   this.watchID = <a href="https://developer.mozilla.org/en-US/docs/Web/API/Geolocation.watchPosition">navigator.geolocation.watchPosition</a>(
 136     function(position) {
 137       position.coords.latitude / .longitude / .accuracy / ...
 138     },
 139     function(error) { ... },
 140     {enableHighAccuracy: true, maximumAge: 10000, timeout: 60000}
 141   );
 142
 143   navigator.geolocation.clearWatch(this.watchID);
 144 </pre>
 145 </div>
 146 </article>
 147
 148 <article id="gravity" title="Gravity Module">
 149 <h1>Gravity Module</h1>
 150
 151 <div class="simplebox">
 152 <p>Accelerometer, Magnetometer</p>
 153 <p>APIs: <a href="https://developer.mozilla.org/en-US/docs/Web/API/DeviceOrientationEvent">deviceorientation</a>,
 154 <a href="https://developer.mozilla.org/en-US/docs/Web/API/DeviceMotionEvent">devicemotion</a> events</p>
 155 <p>Permissions: ---</p>
 156 </div>
 157 </article>
 158
 159 <article id="gravity-code" title="Gravity: Code">
 160 <h1>Gravity: Code</h1>
 161
 162 <div class="simplebox">
 163 <pre>
 164   window.addEventListener("<a href="https://developer.mozilla.org/en-US/docs/Web/Events/deviceorientation">deviceorientation</a>", this.orientEvent, true);
 165   window.addEventListener("<a href="https://developer.mozilla.org/en-US/docs/Web/Events/devicemotion">devicemotion</a>", this.motionEvent, true);
 166
 167   orientEvent: function(orientData) {
 168     orientData.alpha / .beta / .gamma (in °)
 169   },
 170   motionEvent: function(event) {
 171     event.accelerationIncludingGravity.x / .y / .z (in m/s²)
 172   },
 173
 174   window.removeEventListener("deviceorientation", this.orientEvent, true);
 175   window.removeEventListener("devicemotion", this.motionEvent, true);
 176 </pre>
 177 </div>
 178 </article>
 179
 180 <article id="sound" title="Sound Module">
 181 <h1>Sound Module</h1>
 182
 183 <div class="simplebox">
 184 <p>Microphone</p>
 185 <p>APIs: <a href="https://developer.mozilla.org/en-US/docs/Web/Guide/API/WebRTC">WebRTC</a>(getUserMedia),
 186 <a href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API">WebAudio</a></p>
 187 <p>Permissions: audio-capture</p>
 188 </div>
 189 </article>
 190
 191 <article id="sound-code" title="Sound: Code">
 192 <h1>Sound: Code</h1>
 193
 194 <div class="simplebox">
 195 <pre>
 196   <a href="https://developer.mozilla.org/en-US/docs/NavigatorUserMedia.getUserMedia">navigator.getUserMedia</a>({ audio: true },
 197     function(aLocalMediaStream) {
 198       gModSound.mAudio.stream = aLocalMediaStream;
 199       gModSound.mAudio.context = new <a href="https://developer.mozilla.org/en-US/docs/Web/API/AudioContext">window.AudioContext</a>();
 200       gModSound.mAudio.input =
 201           gModSound.mAudio.context.createMediaStreamSource(gModSound.mAudio.stream);
 202       gModSound.mAudio.analyzer = gModSound.mAudio.context<a href="https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode">.createAnalyser</a>();
 203       gModSound.mAudio.input.connect(gModSound.mAudio.analyzer);
 204     },
 205     function(err) { ... }
 206   );
 207
 208   // in window.requestAnimationFrame():
 209   var data = new Uint8Array(gModSound.mAudio.frequencySlices);
 210   gModSound.mAudio.analyzer<a href="https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode.getByteFrequencyData">.getByteFrequencyData</a>(data);
 211   // ... do something with data ...
 212
 213   gModSound.mAudio.stream.stop();
 214 </pre>
 215 </div>
 216 </article>
 217
 218 <article id="environment" title="Environment Module">
 219 <h1>Environment Module</h1>
 220
 221 <div class="simplebox">
 222 <p>Light, Proximity; Flashlight</p>
 223 <p>APIs: <a href="https://developer.mozilla.org/en-US/docs/Web/API/DeviceLightEvent">devicelight</a>,
 224 <a href="https://developer.mozilla.org/en-US/docs/Web/API/DeviceProximityEvent">deviceproximity</a> events;
 225 <a href="https://developer.mozilla.org/en-US/docs/Web/API/Camera_API">Camera API</a></p>
 226 <p>Permissions: ---; camera (for Flash)</p>
 227 </div>
 228 </article>
 229
 230 <article id="environment-code" title="Environment: Code">
 231 <h1>Environment: Code</h1>
 232
 233 <div class="simplebox">
 234 <pre>
 235   window.addEventListener("<a href="https://developer.mozilla.org/en-US/docs/Web/Events/devicelight">devicelight</a>", this.lightEvent, true);
 236   window.addEventListener("<a href="https://developer.mozilla.org/en-US/docs/Web/Events/deviceproximity">deviceproximity</a>", this.proxEvent, true);
 237
 238   lightEvent: function(lightData) {
 239     lightData.value (in lux)
 240   },
 241   proxEvent: function(proxData) {
 242     proxData.min &lt;= .value &lt;= .max (in cm)
 243   },
 244
 245   window.removeEventListener("devicelight", this.lightEvent, true);
 246   window.removeEventListener("deviceproximity", this.proxEvent, true);
 247
 248   // flash/torch code works via <a href="https://developer.mozilla.org/en-US/docs/Web/API/CameraManager.getCamera">navigator.mozCameras.getCamera</a>
 249   // flaky and subject to change, please consult code on github
 250 </pre>
 251 </div>
 252 </article>
 253
 254 <article id="device" title="Device Module">
 255 <h1>Device Module</h1>
 256
 257 <div class="simplebox">
 258 <p>Battery</p>
 259 <p>APIs: <a href="https://developer.mozilla.org/en-US/docs/Web/API/Battery_Status_API">Battery Status API</a></p>
 260 <p>Permissions: ---</p>
 261 </div>
 262 </article>
 263
 264 <article id="device-code" title="Device: Code">
 265 <h1>Device: Code</h1>
 266
 267 <div class="simplebox">
 268 <pre>
 269   0 &lt;= <a href="https://developer.mozilla.org/en-US/docs/Web/API/Navigator.battery">navigator.battery</a>.level &lt;= 1
 270
 271   .charging (true/false)
 272
 273   .chargingTime (in s; 0 or Infinity: unknown)
 274
 275   .dischargingTime (in s; 0 or Infinity: unknown)
 276 </pre>
 277 </div>
 278 </article>
 279
 280 <article id="end" title="The End">
 281
 282 <div class="simplebox">
 283 <h1 class="cent" style="position: relative; z-index: 3; color: #FFFFFF; font-size: 2.5em;">Questions?</h1>
 284 <img src="mister_tricorder.jpg" class="sshot"
 285      style="width: 100%; margin-top: -4.5em; position: relative; z-index: 1;"
 286      alt="Data &amp; Mister Tricorder">
 287 </div>
 288 </article>
 289
 290 </body>
 291 </html>