/*
 * Copyright (c) 1997, Kyle Mestery <mesteka@winternet.com>
 *
 * 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 AUTHORS 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 AUTHORS 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 <stdio.h>
#include <stdlib.h>
#include <sys/fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/errno.h>
#include <machine/ioctl_meteor.h>
#include <machine/ioctl_bt848.h>

#define AFC_BITS		0x07
#define AFC_FREQ_MINUS_125	0x00
#define AFC_FREQ_MINUS_62	0x01
#define AFC_FREQ_CENTERED	0x02
#define AFC_FREQ_PLUS_62	0x03
#define AFC_FREQ_PLUS_125	0x04

#define BOTTOM	(unsigned long)(55.25 * 16)
#define TOP	(unsigned long)(655.25 * 16)

void main() {

	int afcon = 1;
	unsigned long freq, freq2, status;
	int fd;
	char *nothing;
	extern int errno;

	if ((fd = open("/dev/tuner0", O_RDONLY)) == -1) {
		printf("Error opening file: --> %d", errno);
		exit(0);
	}

	if ( ioctl( fd, TVTUNER_SETAFC, &afcon ) < 0 ) {
  		printf("Error: SETAFC1 --> %d", errno);
	}

	for ( freq = BOTTOM; freq < TOP; freq += (6.0 * 16) )
	{
		printf( "\ntrying freq: %f", (double)((double)freq / 16.0) );
		if ( ioctl( fd, TVTUNER_SETFREQ, &freq ) < 0 ) {
			printf("Error: SETFREQ --> %d\n", errno);
		}
		if ( ioctl( fd, TVTUNER_GETFREQ, &freq2 ) < 0 ) {
			printf("Error: GETFREQ --> %d\n", errno);
		}

		if ( ioctl( fd, TVTUNER_GETSTATUS, &status ) < 0 ) {
			printf("Error: GETSTATUS --> %d\n", errno);
		}
		if ( !(status & 0x40) ) {
			printf( ", no lock (?)\n" );
			sleep( 1 );
			continue;
		}

	/** XXX not sure about the / 16 */
		printf( "\nafc picked freq: %f", (double) \
			((double)freq2 / 16.0) );

		printf( ", hit return to continue..." );
		nothing = (char *) malloc(sizeof(char *));
		gets(nothing);
	}
}