mjohnsullivan’s gists

mjohnsullivan / TimerActivity.java

Created July 9, 2015 13:15

Example of how to create a long running timer service that survives activity destruction by moving to the foreground, and back to the background when a new activity bind to it.

	//
	// Copyright 2015 Google Inc. All Rights Reserved.
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software

mjohnsullivan / WifiReceiver.java

Created July 8, 2015 09:02

Broadcast receiver to detect when wifi connects on an Android device, displaying the SSID name and MAC address in a notfication

	//
	// Copyright 2015 Google Inc. All Rights Reserved.
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software

mjohnsullivan / http_server.rs

Last active May 5, 2025 15:14

Simple HTTP server example for Rust

	// Updated example from http://rosettacode.org/wiki/Hello_world/Web_server#Rust
	// to work with Rust 1.0 beta

	use std::net::{TcpStream, TcpListener};
	use std::io::{Read, Write};
	use std::thread;


	fn handle_read(mut stream: &TcpStream) {
	let mut buf = [0u8 ;4096];

mjohnsullivan / MainActivity.java

Last active March 1, 2024 01:28

Android Wear activity that reads and displays sensor data from the device

	package com.example.wear;

	import android.app.Activity;
	import android.hardware.Sensor;
	import android.hardware.SensorEvent;
	import android.hardware.SensorEventListener;
	import android.hardware.SensorManager;
	import android.os.Bundle;
	import android.support.wearable.view.WatchViewStub;
	import android.util.Log;

mjohnsullivan / download.py

Last active December 17, 2022 10:05

Python HTTP download with resume and optional MD5 hash checking

	import os.path
	import shutil
	import hashlib
	import logging

	# Support both Python 2 and 3 urllib2 importing
	try:
	from urllib.request import urlopen, Request
	except ImportError:
	from urllib2 import urlopen, Request

mjohnsullivan / motion3.js

Created May 13, 2013 08:21

AxisCam motion detection with new Node streams Transform without prototypes

	/**
	* Parses out motion data from the Axis camera motion stream
	* Implemented with the new Node streams
	*/
	var stream = require('stream'),
	util = require('util')

	var MotionLevelStream = function() {
	stream.Transform.call(this, {objectMode: true})

mjohnsullivan / motion2.js

Created May 13, 2013 08:21

AxisCam motion detection with new Node streams Transform and prototypes

	/**
	* Parses out motion data from the Axis camera motion stream
	* Implemented with the new Node streams using prototypes
	*/
	var Transform = require('stream').Transform

	var MotionLevelStream = function() {
	Transform.call(this, {objectMode: true})
	}

mjohnsullivan / motion1.js

Last active December 17, 2015 06:39

AxisCam motion detection with classic Node streams

	/**
	* Parses out motion data from the Axis camera motion stream
	*/
	var util = require('util'),
	Stream = require('stream').Stream

	var MotionLevelStream = function() {
	this.readable = true
	this.writable = true
	}

mjohnsullivan / scuttlebutt_muxdemux_test.js

Created March 7, 2013 17:16

My naive attempt at multiplexing/demultiplexing Scuttlebutt Model streams.

	var MuxDemux = require('mux-demux');
	var net = require('net');
	var Model = require('scuttlebutt/model');

	var aModel = new Model
	var aModelStream = aModel.createStream()

	var bModel = new Model
	var bModelStream = bModel.createStream()
	// Server

mjohnsullivan / mxf.py

Created August 17, 2012 10:53

Determines the essence type of an mxf file for DCI digital cinema content: JPEG2000, MPEG or PCM

	import sys
	import struct

	# MXF Keys
	MXF_KEYS = {
	'\x06\x0e\x2b\x34\x02\x53\x01\x01\x0d\x01\x01\x01\x01\x01\x51\x00' : 'MPEG2VIDEODESCRIPTOR',
	'\x06\x0e\x2b\x34\x02\x53\x01\x01\x0d\x01\x01\x01\x01\x01\x5a\x00' : 'JPEG2000PICTURESUBDESCRIPTOR',
	'\x06\x0e\x2b\x34\x02\x53\x01\x01\x0d\x01\x01\x01\x01\x01\x48\x00' : 'WAVEAUDIODESCRIPTOR',
	'\x06\x0e\x2b\x34\x02\x53\x01\x01\x0d\x01\x01\x01\x01\x01\x37\x00' : 'SOURCEPACKAGE',
	'\x06\x0e\x2b\x34\x01\x02\x01\x01\x0d\x01\x03\x01\x15\x01\x05\x00' : 'MPEG2ESSENCE',

Matt Sullivan mjohnsullivan