srikumarks’s gists

srikumarks / sendMIDIMessage.html

Created September 6, 2012 06:20

sendMIDIMessage() wrapper speed

	<script>
	var sendMIDIMessage = (function () {
	var counter = 0;
	return function (arr) {
	counter++;
	if (counter % 1000000 === 0) {
	console.log(counter + " messages");
	}
	};
	}());

srikumarks / webview.go

Created October 1, 2012 04:50

A simple local file server written in Go

	// This code is hereby placed in the PUBLIC DOMAIN.
	package main

	import "fmt"
	import "net/http"
	import "os"

	// A very simple go local file server.
	// 1. Serves on port 8000
	// 2. Serves files relative to the directory in which you run the server.

srikumarks / arc.js

Created October 17, 2012 17:55

The arc challenge using IO.WebServer.js

	// This server doesn't suffer from the problem
	// mentioned in http://arclanguage.org/item?id=1263
	//
	// Run by placing this file alongside IO.WebServer.js
	// and IO.js and invoking node as -
	// node arc.js
	//
	// Then visit http://localhost:9000/said in your browser.

	var IO = require('./IO.WebServer.js');

srikumarks / matrix-dimension.js

Created December 16, 2012 04:05

Getting the dimensions of a multidimensional JS array.

	// Assumes a valid matrix and returns its dimension array.
	// Won't work for irregular matrices, but is cheap.
	function dim(mat) {
	if (mat instanceof Array) {
	return [mat.length].concat(dim(mat[0]));
	} else {
	return [];
	}
	}

srikumarks / drift.html

Created January 26, 2013 08:54

(Web Audio API) A test to see if accumulating sample time drifts away from AudioContext.currentTime.

	<script>
	var ac = new webkitAudioContext;
	var j = ac.createScriptProcessor(1024, 1, 1);

	var startTime, startTimeGrabbed = false, samples = 0, sampleCountTime = 0, frames = 0;

	j.onaudioprocess = function (event) {
	if (!startTimeGrabbed) {
	startTime = ac.currentTime;
	samples = 0;

srikumarks / multi-channel-sinewave-test.html

Created May 7, 2013 04:49

Fixed multi-channel sine wave test of Web Audio API glitching.

srikumarks / AudioContextPatch.js

Created June 11, 2013 00:45

Get an AudioContext class that has "future compatible" names for methods.

	// Gets the AudioContext class when in a browser environment.
	function getAudioContext() {
	try {
	var AC = (window.AudioContext \|\| window.webkitAudioContext \|\| window.mozAudioContext);

	function myAC() {
	var ac = new AC();

	// Future compatible names.
	ac.createGain = ac.createGainNode = (ac.createGain \|\| ac.createGainNode);

srikumarks / simple-ping.js

Created June 14, 2013 06:44

Simple Ping using Web Audio API

	var audioContext = new AudioContext();
	var kFreq = 660, kDecayTime = 0.5, kStartTime = 1.5, kGain = 0.25;
	var oscNode = audioContext.createOscillator();
	oscNode.frequency.value = kFreq;
	var gainNode = audioContext.createGain();
	gainNode.gain.value = kGain;
	gainNode.gain.setTargetAtTime(0.0, audioContext.currentTime, kDecayTime);
	oscNode.connect(gainNode);
	gainNode.connect(audioContext.destination);
	oscNode.start(audioContext.currentTime + kStartTime); // Start a little into the future.

srikumarks / AudioContextMonkeyPatch.js

Last active December 18, 2015 11:59

AudioContext monkey patch that makes old style and new style names available simultaneously.

	/* Copyright (c) 2013, Srikumar K. S. ([email protected])
	* All rights reserved.
	*
	* Licensed under the MIT License -
	*
	* Permission is hereby granted, free of charge, to any person obtaining a copy
	* of this software and associated documentation files (the "Software"), to deal
	* in the Software without restriction, including without limitation the rights
	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	* copies of the Software, and to permit persons to whom the Software is

srikumarks / cspdemo.html

Last active December 19, 2015 17:38

So called "CSP" using IO.js. Implements the "dramatic .. fall-out-of-your-chair" example shown in http://swannodette.github.io/2013/07/12/communicating-sequential-processes/

	<div id="render"></div>
	<!-- Take these from https://github.com/srikumarks/IO.js -->
	<script src="IO.js"></script>
	<script src="IO.Browser.js"></script>
	<script>
	// The rendering process that writes out the array passed to
	// it into the div element with id = 'render'.
	var render = IO.do([
	function (arr) {
	if (arr.length > 10) {

Srikumar srikumarks