xref: /src/usr.sbin/bta2dpd/sbc_crc-gen/sbc_crc.c

/* $NetBSD: sbc_crc.c,v 1.1 2017/01/28 16:55:54 nat Exp $ */

/*-
 * Copyright (c) 2015 Nathanial Sloss <nathanialsloss@yahoo.com.au>
 * All rights reserved.
 *
 *		This software is dedicated to the memory of -
 *	   Baron James Anlezark (Barry) - 1 Jan 1949 - 13 May 2012.
 *
 *		Barry was a man who loved his music.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/types.h>
#include <stdio.h>

int
main()
{
	int j, i, k, numbits;
	uint8_t data;

	printf("/* sbc_crc.h - Automatically generated by sbc_crc.c. */\n\n");

	/* The CRC-8 polynomial this uses is 0x11D */

	numbits = 8;
	for (k = 0; k < 2; k++) {
		printf("static const uint8_t sbc_crc%d[256] = {\n    ",numbits);
		for (i = 0; i < 256; i++) {
			data = i;

			for (j = 0; j < numbits; j++) {
				if (data & 0x80){
					data = data << 1;
					data = (data ^ 0x1d);
				} else
					data = data << 1;
			}

			if (i % 8 == 0 && i != 0)
				printf("\n    ");

			printf("0x%02x, ",data);
		}
		printf("\n};\n\n");

		numbits = 4;
	}
	return 0;
}