Use jpeg-turbo for decompressing the JPGs. It's super fast compared to

what it was before.

README.md

@@ -65,6 +65,7 @@ As the product has evolved from an internal tool running in our internal network
 * [GraphicsMagick](http://www.graphicsmagick.org/) (for resizing screenshots)
 * [ZeroMQ](http://zeromq.org/) libraries installed
 * [Protocol Buffers](https://github.com/google/protobuf) libraries installed
+* [jpeg-turbo](http://libjpeg-turbo.virtualgl.org/) libraries installed (for quick VNC format conversions)
 * [pkg-config](http://www.freedesktop.org/wiki/Software/pkg-config/) so that Node.js can find the libraries
 
 Note that you need these dependencies even if you've installed STF directly from [NPM](https://www.npmjs.com/), because they can't be included.
@@ -72,7 +73,7 @@ Note that you need these dependencies even if you've installed STF directly from
 On OS X, you can use [homebrew](http://brew.sh/) to install most of the dependencies:
 
 ```bash
-brew install rethinkdb graphicsmagick zeromq protobuf pkg-config
+brew install rethinkdb graphicsmagick zeromq protobuf jpeg-turbo pkg-config
 ```
 
 On Windows you're on your own. In theory you might be able to get STF installed via [Cygwin](https://www.cygwin.com/) or similar, but we've never tried. In principle we will not provide any Windows installation support, but please do send a documentation pull request if you figure out what to do.

lib/units/device/plugins/vnc/index.js

@@ -4,7 +4,7 @@ var util = require('util')
 var syrup = require('stf-syrup')
 var Promise = require('bluebird')
 var uuid = require('node-uuid')
-var jpeg = require('jpeg-js')
+var jpeg = require('jpeg-turbo')
 
 var logger = require('../../../../util/logger')
 var lifecycle = require('../../../../util/lifecycle')
@@ -113,7 +113,7 @@ module.exports = syrup.serial()
               return
             }
 
-            var decoded = jpeg.decode(connState.lastFrame)
+            var decoded = jpeg.decompressSync(connState.lastFrame)
             conn.writeFramebufferUpdate([
               { xPosition: 0
               , yPosition: 0

lib/units/device/plugins/vnc/util/connection.js

@@ -24,7 +24,7 @@ function VncConnection(conn, options) {
   this._serverWidth = 1080
   this._serverHeight = 1920
   this._serverPixelFormat = new PixelFormat({
-    bitsPerPixel: 32
+    bitsPerPixel: 24
   , depth: 24
   , bigEndianFlag: 0
   , trueColorFlag: 1

package.json

@@ -50,6 +50,7 @@
     "http-proxy": "^1.11.2",
     "in-publish": "^2.0.0",
     "jade": "^1.9.2",
+    "jpeg-turbo": "^0.1.1",
     "jws": "^3.1.0",
     "ldapjs": "git+https://github.com/mcavage/node-ldapjs.git#acc1ca8f4314fd9d67561feabc8ce4c235076a5e",
     "lodash": "^3.10.1",