Method openBinaryLut

ij/src/main/java/ij/plugin/LutLoader.java:367–397

Opens an NIH Image LUT or a 768 byte binary LUT.

(FileInfo fi, boolean isURL, boolean raw)

	/** Opens an NIH Image LUT or a 768 byte binary LUT. */
	int openBinaryLut(FileInfo fi, boolean isURL, boolean raw) throws IOException {
		InputStream is;
		if (isURL)
			is = new URL(fi.url+fi.fileName).openStream();
		else
			is = new FileInputStream(fi.getFilePath());
		DataInputStream f = new DataInputStream(is);
		int nColors = 256;
		if (!raw) {
			// attempt to read 32 byte NIH Image LUT header
			int id = f.readInt();
			if (id!=1229147980) { // 'ICOL'
				f.close();
				return 0;
			}
			int version = f.readShort();
			nColors = f.readShort();
			int start = f.readShort();
			int end = f.readShort();
			long fill1 = f.readLong();
			long fill2 = f.readLong();
			int filler = f.readInt();
		}
		f.read(fi.reds, 0, nColors);
		f.read(fi.greens, 0, nColors);
		f.read(fi.blues, 0, nColors);
		if (nColors<256)
			interpolate(fi.reds, fi.greens, fi.blues, nColors);
		f.close();
		return 256;
	}
	
	int openTextLut(FileInfo fi) throws IOException {
		TextReader tr = new TextReader();