DamonOehlman

As part of the work I'm doing now with NICTA there is a strong focus on providing a technical "leg-up" with things like WebRTC.

Most of the work that I'll be doing will be making use of node, and while NPM does a fantastic job of providing an elegant entry point for working with libraries and even demos, I'm wondering whether we should also be providing Vagrant boxes or a simply provisionable Vagrantfile to help get people started.

It seems to me that using this approach could reacher a broader base of developers (i.e. not only those who work with / use node). It does, however, require that people have Vagrant installed, running and enough memory on their machines to run up a VM.

Thoughts?

DamonOehlman

Brightess Fix

When brightness controls stop responding manually trigger a brightness update. Once this is done brightness controls seem to respond again. Not sure if the lspci command is required, when my linux foo is stronger I'm sure I'll know...

lspci -nn | grep VGA
echo 3500 | sudo tee /sys/class/backlight/intel_backlight/brightness

DamonOehlman

Higher Order Functions

Filter

http://en.wikipedia.org/wiki/Filter_(higher-order_function)

When using a filter function you are typically creating a subset of an original list, array, etc based on elements that satisfy a particular condition. This is probably quite different to the common language definition whereby "to filter" would likely mean to remove.

DamonOehlman

var detect = require('feature/detect');
var raf = detect('requestAnimationFrame');

if (raf) {
  raf(function() {
    console.log('hi');
  });
}

DamonOehlman

var console = require('demo-console');
var defaults = require('cog/defaults');
var extend = require('cog/extend');

// extend performs a shallow copy and override operation for objects
// similar to the way jquery, underscore, etc, do things
console.log(extend({ a: 1, b: 2 }, { c: 3 }, { d: 4 }, { b: 5 }));

// defaults is similar but will not override values
console.log(defaults({ a: 1, b: 2 }, { c: 3 }, { d: 4 }, { b: 5 }));

DamonOehlman

// require the media capture helper from rtc.io
var media = require('rtc-media');
 
// capture video and render it to the document body
media().render(document.body);

DamonOehlman

var signaller = require('rtc/signaller')({ channel: 'test', host: 'http://rtc.io' });
var media = require('rtc/media');
var crel = require('crel');
var localMedia;
var commandInput;
var messageList;
var localMedia;

// capture the local video and audio from this machine
localMedia = media();

DamonOehlman

STEP_SOURCES=$(wildcard src/steps/*.md)

default: clean build

clean:
	@rm public/*.html

build:
	@for inputfile in $(STEP_SOURCES); \
	do \

DamonOehlman

More generic instructions can be found here: https://github.com/umlaeute/v4l2loopback/wiki/Mplayer

Install v4l2loopback

git clone https://github.com/umlaeute/v4l2loopback
cd v4l2loopback
make
sudo make install
sudo modprobe v4l2loopback

DamonOehlman