Dustin Spicuzza virtuald

At work, I've been playing a little bit with visualization of data. After hours, I DJ at local Lindy Hop dance events, and it occurred to me recently that it could be interesting to visualize my playlists to understand more about what I actually played. Using Exaile, I'm able to easily add a lot of metadata to the tracks in my collection, and its plugin framework made it easy to take that data and do something interesting with it.

From that initial investigation, I've built in a playlist visualization templating engine plugin for Exaile that can do some very simple visualization stuff, and I'm planning on extending the types of things I can do with it. Here's an interesting one I created from a recent playlist. This visualization was inspired by The Concept Map, except the source code for this isn't minified. :)

The HTML/js was generated by Exaile 3.4-beta3.

NOTE: These scripts are obsolete, you should use the mjpg-streamer.ipk file published at https://github.com/robotpy/roborio-packages instead.

mjpg-streamer scripts for RoboRIO

This was very quickly put together... so not quite as polished as I would normally like. :)

We used these scripts to run two camera servers on our roboRIO. Very little CPU usage as far as we can see. Only tested with the Microsoft LifeCam 3000 cameras.

	FROM dockerfile/python

	ADD / /build

	ENTRYPOINT ["/build/foo.py"]
	# output: args ['/build/foo.py', 'bash']

	# None of these work as expected either

	#CMD ['arg1']

	#!/usr/bin/env python

	from tornado import gen
	from tornado.ioloop import IOLoop

	from tornado import stack_context

	import traceback

	def broken(arg1, callback):

	#!/usr/bin/env python

	from tornado import gen
	from tornado.ioloop import IOLoop


	@gen.coroutine
	def exception_gets_lost():

	print 'got here'

	#!/usr/bin/env python3

	import os
	import sys

	_b = sys.version_info[0] < 3 and (lambda x:x) or (lambda x:x.encode('utf-8'))

	def ssh_exec_pass(password, args, capture_output=False):
	'''
	Wrapper around openssh that allows you to send a password to


	import wpilib
	from wpilib.buttons import JoystickButton
	from wpilib.command import Command, CommandGroup, Scheduler

	class DoTheThing(Command):
	def __init__(self, robot):
	super().__init__()
	self.robot = robot

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	</head>
	<body>

	<!-- This starts the NetworkTables websocket, it can be accessed from multiple
	pages simultaneously -->
	<script src="/networktables/networktables.js"></script>

	0:00:00.000044940 24400 0xd5e720 INFO GST_INIT gst.c:499:init_pre: Initializing GStreamer Core Library version 1.4.5
	0:00:00.000090481 24400 0xd5e720 INFO GST_INIT gst.c:500:init_pre: Using library installed in /usr/lib64
	0:00:00.000100859 24400 0xd5e720 INFO GST_INIT gst.c:511:init_pre: Linux localhost.localdomain 3.19.3-200.fc21.x86_64 #1 SMP Thu Mar 26 21:39:42 UTC 2015 x86_64
	0:00:00.000254496 24400 0xd5e720 INFO GST_INIT gstmessage.c:119:_priv_gst_message_initialize: init messages
	0:00:00.000601084 24400 0xd5e720 INFO GST_INIT gstcontext.c:77:_priv_gst_context_initialize: init contexts
	0:00:00.000787706 24400 0xd5e720 INFO GST_PLUGIN_LOADING gstplugin.c:317:_priv_gst_plugin_initialize: registering 0 static plugins
	0:00:00.000865813 24400 0xd5e720 INFO GST_PLUGIN_LOADING gstplugin.c:225:gst_plugin_register_static: registered static plugin "staticelements"
	0:00:00.000876420 24400

	#
	# Playbin bug: Play 2 flac files (presumably of any length), and play
	# 2 mp3 files, using gapless playback, and weirdness happens
	#
	# On GST 1.4.5, track4.mp3 stalls for ~10s or so without playing, but
	# there is no audio for track3 or track4. Other tests I've conducted
	# track3 does have audio, but there is still a pause.
	#
	# On GST 1.5.2, there is no volume for track3 or track4.mp3, but no
	# stall occurs. Seems like a bug.