From 7039a05147b8bbfc829babea1c65bd436450b505 Mon Sep 17 00:00:00 2001 From: Björn Stenberg Date: Mon, 8 Jan 2007 23:53:00 +0000 Subject: Splitting out songdbj git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11953 a1c6a512-1295-4272-9138-f99709370657 --- songdbj/javazoom/jl/decoder/Crc16.java | 70 ---------------------------------- 1 file changed, 70 deletions(-) delete mode 100644 songdbj/javazoom/jl/decoder/Crc16.java (limited to 'songdbj/javazoom/jl/decoder/Crc16.java') diff --git a/songdbj/javazoom/jl/decoder/Crc16.java b/songdbj/javazoom/jl/decoder/Crc16.java deleted file mode 100644 index c35cc19341..0000000000 --- a/songdbj/javazoom/jl/decoder/Crc16.java +++ /dev/null @@ -1,70 +0,0 @@ -/* - * 11/19/04 : 1.0 moved to LGPL. - * - * 02/12/99 : Java Conversion by E.B , javalayer@javazoom.net - * - * @(#) crc.h 1.5, last edit: 6/15/94 16:55:32 - * @(#) Copyright (C) 1993, 1994 Tobias Bading (bading@cs.tu-berlin.de) - * @(#) Berlin University of Technology - *----------------------------------------------------------------------- - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU Library General Public License as published - * by the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - *---------------------------------------------------------------------- - */ -package javazoom.jl.decoder; - -/** - * 16-Bit CRC checksum - */ -public final class Crc16 -{ - private static short polynomial=(short)0x8005; - private short crc; - - /** - * Dummy Constructor - */ - public Crc16() - { - crc = (short) 0xFFFF; - } - - /** - * Feed a bitstring to the crc calculation (0 < length <= 32). - */ - public void add_bits (int bitstring, int length) - { - int bitmask = 1 << (length - 1); - do - if (((crc & 0x8000) == 0) ^ ((bitstring & bitmask) == 0 )) - { - crc <<= 1; - crc ^= polynomial; - } - else - crc <<= 1; - while ((bitmask >>>= 1) != 0); - } - - /** - * Return the calculated checksum. - * Erase it for next calls to add_bits(). - */ - public short checksum() - { - short sum = crc; - crc = (short) 0xFFFF; - return sum; - } -} -- cgit v1.2.3