Vanilagy

💭

Casually chillin' on le GitHubz.

German student. Mostly into web stuff.

Vanilagy / rgba_to_yuv_420.ts

Last active October 27, 2022 14:57

Canvas RGBA image data to packed planar YUV 4:2:0 using the BT.709 color matrix

	const RGBAToYUV420 = ({ width, height, data }: ImageData) => {
	// Assume both width and height are even
	let yuv = new Uint8Array(width * height * 1.5);

	// Use loop tiling as a cache optimization
	const tileSize = 64;
	for (let y0 = 0; y0 < height; y0 += tileSize) {
	for (let x0 = 0; x0 < width; x0 += tileSize) {
	let limitX = Math.min(width, x0 + tileSize);
	let limitY = Math.min(height, y0 + tileSize);

Vanilagy / structured_clone.js

Last active January 24, 2019 22:34

HTML Structured Clone Algorithm directly exposed in JavaScript using BroadcastChannels

	// @Vanilagy 2019
	//
	// Example:
	// structuredClone([5, {hello: 'world'}, new Set()]).then((data) => console.log(data));
	// > [5, {hello: "world"}, Set(0)]

	var structuredClone = (function() {
	var sender = new BroadcastChannel('structuredClone'),
	receiver = new BroadcastChannel('structuredClone');