Added simple attachstream implementation

Author: DamonOehlman

attachstream.js

@@ -0,0 +1,36 @@
+var canUseURL = typeof window.URL != 'undefined';
+
+module.exports = function(el, stream, callback) {
+
+  function ready() {
+    el.removeEventListener('canplay', ready);
+    el.removeEventListener('loadedmetadata', ready);
+  }
+
+  // check for srcObject
+  if (typeof el.srcObject != 'undefined') {
+    video.srcObject = stream;
+  }
+  // check for mozSrcObject
+  else if (typeof el.mozSrcObject != 'undefined') {
+    el.mozSrcObject = stream;
+  }
+  else {
+    el.src = canUseURL ? URL.createObjectURL(stream) : stream;
+  }
+
+  // if no callback has been provided, return without monitoring the readiness
+  if (! callback) {
+    return;
+  }
+
+  // if the video is ready now, then capture the frame
+  if (el.readyState >= 3) {
+    return callback();
+  }
+  else {
+    el.addEventListener('canplay', ready, false);
+    el.addEventListener('loadedmetadata', ready, false);
+  }
+
+};