/*-
 * Copyright (c) 2003, 2004, 2005
 *	John Wehle <john@feith.com>.  All rights reserved.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by John Wehle.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 * Set the channel of the tuner card.
 */

#include <sys/types.h>
#include <sys/param.h>
#include <sys/ioctl.h>

#include <ctype.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <dev/video/meteor/ioctl_meteor.h>
#include <dev/video/bktr/ioctl_bt848.h>

static void
usage(void)
{
	fprintf(stderr,
	    "usage: cxm_setchannel [-a {on|off}] [-c | -r | -s | -t] [-d unit] [-g geom]\n"
	    "                      [-m chnl_set] [chnl | freq]\n");
}

int
main(int argc, char *argv[])
{
	char *ptr;
	char *endptr;
	char buf[255];
	int afc;
	int audio;
	int c;
	int channel_set;
	int i;
	int status;
	int tfd;
	int unit;
	unsigned int channel;
	unsigned int fraction;
	unsigned int freq;
	unsigned int x_size;
	unsigned int y_size;
	unsigned long device;
	struct bktr_capture_area cap;

	afc = -1;
	audio = -1;
	channel = 0;
	channel_set = -1;
	device = 0;
	unit = 0;
	freq = 0;
	status = 0;
	x_size = 0;
	y_size = 0;

	while ((c = getopt(argc, argv, "a:crstg:m:d:")) != -1)
		switch (c) {
		case 'a':
			if (strcasecmp(optarg, "on") == 0)
				afc = 1;
			else if (strcasecmp(optarg, "off") == 0)
				afc = 0;
			else {
				usage();
				exit(1);
			}
			break;

		case 'c':
			device = METEOR_INPUT_DEV2;
			audio = -1;
			break;

		case 'd':
			unit = atoi(optarg);
			break;

		case 'r':
			device = 0;
			audio = AUDIO_INTERN;
			break;

		case 's':
			device = METEOR_INPUT_DEV_SVIDEO;
			audio = -1;
			break;

		case 't':
			device = METEOR_INPUT_DEV1;
			audio = -1;
			break;

		case 'g':
			if (sscanf(optarg, "%ux%u", &x_size, &y_size) != 2 ||
			    x_size == 0 || y_size == 0) {
				usage();
				exit(1);
			}
			break;

		case 'm':
			channel_set = atoi(optarg);
			if (channel_set < 0 || channel_set > CHNLSET_MAX) {
				usage();
				exit(1);
			}
			break;

		default:
			usage();
			exit(1);
		}

	if (optind < argc) {

		/*
		 * A number containing a decimal point is the frequency in
		 * MHz.
		 */

		if ((ptr = strchr(argv[optind], '.')) != NULL) {
			freq = strtol(argv[optind], &endptr, 10) * 1000;
			if (ptr != endptr) {
				usage();
				exit(1);
			}
			ptr++;

			fraction = strtol(ptr, &endptr, 10);
			if (!isdigit(*ptr) || *endptr != '\0') {
				usage();
				exit(1);
			}
			for (i = endptr - ptr; i > 3; i--)
				fraction /= 10;
			for (; i < 3; i++)
				fraction *= 10;

			freq += fraction;
		}
		/*
		 * An integer is the channel.
		 */

		else
			channel = atoi(argv[optind]);
	}
	if (afc == -1 && audio == -1 && !device && x_size == 0 &&
	    y_size == 0 && channel_set == -1 && !channel && !freq) {
		usage();
		exit(1);
	}

	sprintf(buf, "/dev/cxm%d", unit);

	tfd = open(buf, O_RDONLY);
	if (tfd < 0) {
		warn("open() of /dev/cxm%d failed.", unit);
		exit(1);
	}

	if (afc != -1) {
		if (ioctl(tfd, TVTUNER_SETAFC, &afc) < 0) {
			warn("ioctl( tfd, TVTUNER_SETAFC ) failed.");
			status = 1;
		}
	}
	if (device) {
		if (ioctl(tfd, METEORSINPUT, &device) < 0) {
			warn("ioctl( tfd, METEORSINPUT ) failed.");
			status = 1;
		}
	}
	if (audio != -1) {
		if (ioctl(tfd, BT848_SAUDIO, &audio) < 0) {
			warn("ioctl( tfd, BT848_SAUDIO ) failed.");
			status = 1;
		}
	}
	if (ioctl(tfd, BT848_GAUDIO, &audio) < 0) {
		warn("ioctl( tfd, BT848_GAUDIO ) failed.");
		status = 1;
	}
	if (x_size && y_size) {
		memset(&cap, 0, sizeof(cap));
		cap.x_size = x_size;
		cap.y_size = y_size;
		if (ioctl(tfd, BT848_SCAPAREA, &cap) < 0) {
			warn("ioctl( tfd, BT848_SCAPAREA ) failed.");
			status = 1;
		}
	}
	if (channel_set != -1) {
		if (ioctl(tfd, TVTUNER_SETTYPE, &channel_set) < 0) {
			warn("ioctl( tfd, TVTUNER_SETTYPE ) failed.");
			status = 1;
		}
	}
	if (channel) {
		if (ioctl(tfd, TVTUNER_SETCHNL, &channel) < 0) {
			warn("ioctl( tfd, TVTUNER_SETCHNL ) failed.");
			status = 1;
		}
	} else if (freq) {
		if (audio == AUDIO_INTERN) {
			/* Convert from kHz to MHz * 100 */
			freq = freq / 10;

			if (ioctl(tfd, RADIO_SETFREQ, &freq) < 0) {
				warn("ioctl( tfd, RADIO_SETFREQ ) failed.");
				status = 1;
			}
		} else {
			/* Convert from kHz to MHz * 16 */
			freq = (freq * 16) / 1000;

			if (ioctl(tfd, TVTUNER_SETFREQ, &freq) < 0) {
				warn("ioctl( tfd, TVTUNER_SETFREQ ) failed.");
				status = 1;
			}
		}
	}
	close(tfd);
	exit(status);
}