Matthew Hamilton mhamilt

Copy and Paste or create a code snippet in xcode

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/*!
 @class <#Class Name#>
 @brief <#Quick Description#>
 @discussion <#Talk about what this does in more detail#>
 @namespace &lt;#What is the Namespace if any#&gt;

Notes

Create a command line target in xcode either in Swift or Obj-C. add a metal file to the project and copy and paste the respective code into each file.

Paralell Data Processing with Metal

Build Instructions

Create a Swift Command Line Tool in Xcode. You can then copy and paste the below code into the .swift and .metal files respectively

Source

main.swift

FFMPEG: Generate Gif

See This SO Article

And Here

# verbose, but customisable
ffmpeg -i VIDEO.EXTENSION  -vf "fps=10,scale=680:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" -loop 0 OUT.gif
# gritty, but portable

	# declares an array with the emojis we want to support
	EMOJIS=("🐑" "🦔" "🐈" "🦆" "🐓")

	# function that selects and return a random element from the EMOJIS set
	RANDOM_EMOJI() {
	SELECTED_EMOJI=${EMOJIS[$RANDOM % ${#EMOJIS[@]}]};
	echo $SELECTED_EMOJI;
	}

	# declare the terminal prompt format

	#include <ApplicationServices/ApplicationServices.h>
	#include <iostream>
	#include <string>

	///print out location in a nice way to std cout
	void fancyPrintLocation(CGPoint location);

	/// This callback will be invoked every time the mouse moves.
	CGEventRef myCGEventCallback(CGEventTapProxy proxy, CGEventType type,
	CGEventRef event, void *refcon)

	function out = autocorrolate(signal)
	% AUTOCORROLATE Multiply a signal by itself over a moving delay window.
	% Max delay will be equal to the length of the signal
	% Y = AUTOCORROLATE(x) returns auto correlation of x
	%
	N = length(signal);
	out = zeros(size(signal));
	for l = 1:N - 1
	for n = l+1:(N)
	out(l) = out(l) + (signal(n)*signal(n-l));

	//------------------------------------------------------------------------------
	import AVFoundation
	//------------------------------------------------------------------------------
	var secondsOfAudio:Float = 0.5; // or var secondsOfAudio:Float = Float(CommandLine.arguments[1])!;
	//------------------------------------------------------------------------------
	var ae:AVAudioEngine? = AVAudioEngine()
	var player:AVAudioPlayerNode? = AVAudioPlayerNode()
	var mixer:AVAudioMixerNode? = ae?.mainMixerNode;
	//------------------------------------------------------------------------------
	let sr:Float = Float((mixer?.outputFormat(forBus: 0).sampleRate)!)

	import csv, os


	def add_csv_column(filename: str, column_name: str, data: list) -> None:
	"""
	Add a column of data to an existing csv file

	pads with empty string if data size does not match target csv

	:param filename: path to csv file

	#include <iostream>
	#include <memory>

	void setPtr (int *a)
	{
	std::cout << *a << '\n';
	}

	int main(int argc, const char * argv[])
	{