Fork Code: JPEG / JPG Glitcher

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// code found @ "http://uiae.de/?p=110"
// based on: http://www.hellocatfood.com/create-jpgs-in-pure-data/
// test with jpeg data here: http://www.ffd8.org/header_remix/?showall=yup

(
// make 10 glitched versions of a JPEG
10.do{ |i|
	// change here the path of the original image and the path to the glithced images
	var inpath = "/Users/rukano/Desktop/monalisa.jpg";
	var outpath = "/Users/rukano/Desktop/monalisa-glitch-%.jpg".format(i);
	var outfile;
	var file = File.open(inpath, "rb");
	var data = file.length.collect{ file.getInt8 };

	// how many bytes to replace
	100.do{
		var pos = rrand(200, data.size - 10);
		data[pos] = 256.rand;
		// data[pos] = (data[pos] + 100.rand2).max(0).min(255);
	};

	// write out the file
	outfile = File.new(outpath, "wb");
	outfile.write(data.as(Int8Array));
	outfile.close;
	"---> wrote %".format(outpath).postln;
};
)

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