Function decompress

modules/commodetto/commodettoLoadJPEG.js:25–39

(data, dictionary)

import BufferOut from "commodetto/BufferOut";

export default function decompress(data, dictionary) {
	let jpeg = new JPEG(data, dictionary);

	let offscreen = new BufferOut({width: jpeg.width, height: jpeg.height, pixelFormat: jpeg.bitmap.pixelFormat});
	let render = new Poco(offscreen);

	while (jpeg.ready) {
		let block = jpeg.read();
		render.begin(block.x, block.y, block.width, block.height);
		render.drawBitmap(block, block.x, block.y);
		render.end();
	}

	return offscreen.bitmap;
}