tiny getUserMedia/camera example.

fancyness: supports getting single images.
not so fancyness: doesn't display any instructions.

js/camera.html

@@ -0,0 +1,31 @@
<p>(Intentionally left blank, take a look at the console.)</p>
<script>
  navigator.getUserMedia = navigator.getUserMedia || navigator.mozGetUserMedia || navigator.webkitGetUserMedia;
  window.video = document.createElement("video");
  window.canvas = document.createElement("canvas");
  window.ctx = canvas.getContext("2d");
  navigator.getUserMedia(
    {video: true},
    function(lms) {
      window.lms = lms;
      video.src = URL.createObjectURL(lms);
      video.onplaying = function() {
        console.log("recording ...");
        // this is a hack, there's probably an event that we could use instead
        setTimeout(getImage, 1000); };
      video.play();
    },
    function(err) { console.error(err); }
  );
  function getImage() {
    console.log("taking image");
    ctx.drawImage(video, 0, 0);
    window.img = ctx.getImageData(0, 0, canvas.width, canvas.height);
    return img;
  }
</script>