/*-
 * 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);
}