Ember Webcam

This Ember CLI addon is a simple wrapper for WebcamJS 1.x.

NOTE: WebcamJS is in maintenance mode. See readme for details

Installation

ember install ember-webcam

Usage

This Ember addon provides an ember-webcam component which renders a live camera viewer. It also yields a camera controller (camera) to the block. This controller can be used to trigger certain camera actions, such as taking a still snapshot (camera.snap).

The component also takes two optional closure actions:

• didSnap will be fired after a snapshot is taken, with the data URI of the snapshot. This URI can be passed around like any URL, or be submitted to your server.

• didError will be fired when an error occurs.

import Component from 'ember-component';

export default Component.extend({
  dataUri: null,
  actions: {
    didSnap(dataUri) {
      // Delivers a data URI when snapshot is taken.
      this.set('dataUri', dataUri);
    },
    didError(error) {
      // Fires when a WebcamError occurs.
      console.error(error);
    },
  },
});

{{#ember-webcam
  didSnap=(action 'didSnap')
  didError=(action 'didError')
  as |camera|}}
  <button {{action camera.snap}}>
    Take Snapshot!
  </button>
{{/ember-webcam}}

<img src={{dataUri}}>

Fastboot Compatibility

For Fastboot compatibility you must avoid rendering ember-webcam on the server. One way to do this is wrap ember-webcam in your own component which only renders ember-webcam after the didInsertElement hook.

import Component from 'ember-component';

export default Component.extend({
  didInsertElement() {
    this.set('displayWebcam');
  }
)}

{{#if displayWebcam}}
  {{#ember-webcam
    didSnap=(action 'didSnap')
    didError=(action 'didError')
    as |camera|}}
    <button {{action camera.snap}}>
      Take Snapshot!
    </button>
  {{/ember-webcam}}

  <img src={{dataUri}}>
{{/if}}

Configurations

By default, this addon will import a webcam.swf file from WebcamJS and include it in your build. This file is used as a fallback if your browser does not support HTML5 getUserMedia. IE and Safari are two major browsers that do not yet have the support. For more details, see WebcamJS Docs and caniuse.com.

This Flash fallback can be turned off by specifying enableFlashFallback: false inside the ember-webcam config property in your ember-cli-build.js file (or your index.js if you are working on an addon):

module.exports = function(defaults) {
  const app = new EmberApp(defaults, {
    'ember-webcam': {
      enableFlashFallback: false,
    },
  });

  // ...
};

You may otherwise specify where you want webcam.swf to be located in your build, using the flashFallbackDir option. The default value is 'assets', meaning the file will be located at <APP_ROOT>/assets/webcam.swf.

Contributors

Kind thanks to Lei Zhao (leizhao4) for initiating this project and of course the authors of WebcamJS.

License

This addon is MIT Licensed.