webcam/media ipywidget

camera.ipynb

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    "%%javascript\n",
    "require.undef('media');\n",
    "\n",
    "define('media', [\"@jupyter-widgets/base\"], function(widgets) {\n",
    "    var MediaModel = widgets.DOMWidgetModel.extend({\n",
    "        defaults: _.extend({}, widgets.DOMWidgetModel.prototype.defaults, {\n",
    "            _model_name: 'MediaModel',\n",
    "            _view_name: 'MediaView',\n",
    "            audio: false,\n",
    "            video: true\n",
    "        }),\n",
    "        initialize: function() {\n",
    "            // Get the camera permissions\n",
    "            this.stream = navigator.mediaDevices.getUserMedia({audio: false, video: true});\n",
    "            this.stream.then(function(stream) {\n",
    "                window.stream = stream\n",
    "            })\n",
    "        }\n",
    "    });\n",
    "\n",
    "    var MediaView = widgets.DOMWidgetView.extend({\n",
    "\n",
    "        initialize: function() {\n",
    "            var el = document.createElement('video')\n",
    "            window.last_media_view = this;\n",
    "            el.setAttribute('width', 320)\n",
    "            el.setAttribute('height', 240)\n",
    "            this.setElement(el);\n",
    "            MediaView.__super__.initialize.apply(this, arguments);\n",
    "        },\n",
    "\n",
    "        render: function() {\n",
    "            var that = this;\n",
    "            that.model.stream.then(function(stream) {\n",
    "                that.el.src = window.URL.createObjectURL(stream);\n",
    "                that.el.play()\n",
    "            })\n",
    "        }\n",
    "\n",
    "    });\n",
    "\n",
    "    return {\n",
    "        MediaModel: MediaModel,\n",
    "        MediaView: MediaView\n",
    "    }\n",
    "});\n",
    "require(['media'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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   "source": [
    "from ipywidgets import Widget, register, widget_serialization, DOMWidget\n",
    "from traitlets import Bool, Dict, Int, Float, Unicode, List, Instance\n",
    "\n",
    "@register\n",
    "class Media(DOMWidget):\n",
    "    \"\"\"Represents a media source.\"\"\"\n",
    "\n",
    "    # Specify audio constraint and video constraint as a boolean or dict.\n",
    "    audio = Bool(False).tag(sync=True)\n",
    "    video = Bool(True).tag(sync=True)\n",
    "\n",
    "    _model_module = Unicode('media').tag(sync=True)\n",
    "    _view_module = Unicode('media').tag(sync=True)\n",
    "    _view_name = Unicode('MediaView').tag(sync=True)\n",
    "    _model_name = Unicode('MediaModel').tag(sync=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "media = Media()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "media"
   ]
  },
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    "collapsed": true
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