color.c

/*
 * rzctl(1) -- Razer mouse control utility
 * Copyright (c) 2019 Angel <angel@ttm.sh>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, version 2.
 *
 * 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>

#include "razer.h"
#include "util.h"

int razer_set_color(struct razer_device *dev, uint32_t rgb)
{
    uint8_t args[5] = {
            1, /* persist value? */
            0, /* LED ID */
            (rgb >> 16) & 0xff, /* R */
            (rgb >> 8) & 0xff, /* G */
            rgb & 0xff /* B */
    };

    /* set logo color */
    args[1] = LED_SCROLL;
    razer_send_report(dev, 0x03, 0x01, args, sizeof(args), NULL, 0);
    /* set scroll wheel color */
    args[1] = LED_LOGO;
    razer_send_report(dev, 0x03, 0x01, args, sizeof(args), NULL, 0);
    return 0;
}
int set_color(int verbose, const char *s_color)
{
    struct razer_device *devs;
    int ndevs, i;
    uint32_t color;

    errno = 0;
    color = strtoul(s_color, NULL, 16);
    if (errno != 0 || color > UINT32_MAX) {
        fprintf(stderr, PR_ERROR "the supplied color value is invalid\n");
        return 1;
    }

    if (libusb_init(NULL) < 0) {
        fprintf(stderr, PR_ERROR "could not initialize libusb\n");
        return 1;
    }
    if (verbose)
        libusb_set_option(NULL, LIBUSB_OPTION_LOG_LEVEL, LIBUSB_LOG_LEVEL_DEBUG);

    ndevs = razer_get_devices(&devs);
    if (ndevs < 0) {
        fprintf(stderr, PR_ERROR "could not get Razer devices\n");
        return 1;
    }

    for (i = 0; i < ndevs; i++) {
        razer_init(&devs[i]);
        razer_set_color(&devs[i], color);
        razer_deinit(&devs[i]);
    }
    razer_free_devices(&devs);
    libusb_exit(NULL);
    return 0;
}