152 lines
3.7 KiB
C++
152 lines
3.7 KiB
C++
/*
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*
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* Conky, a system monitor, based on torsmo
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*
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* Any original torsmo code is licensed under the BSD license
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*
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* All code written since the fork of torsmo is licensed under the GPL
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*
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* Please see COPYING for details
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*
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* Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
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* Copyright (c) 2005-2019 Brenden Matthews, Philip Kovacs, et. al.
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* (see AUTHORS)
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* All rights reserved.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include "conky.h"
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#include "logging.h"
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#include "specials.h"
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#include "text_object.h"
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#ifdef HAVE_LINUX_SOUNDCARD_H
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#include <linux/soundcard.h>
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#else
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#ifdef __OpenBSD__
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#include <soundcard.h>
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#else
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#include <sys/soundcard.h>
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#endif /* __OpenBSD__ */
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#endif /* HAVE_LINUX_SOUNDCARD_H */
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#if defined(__sun)
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#include <stropts.h>
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#include <unistd.h>
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#endif
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#define MIXER_DEV "/dev/mixer"
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static int mixer_fd;
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static const char *devs[] = SOUND_DEVICE_NAMES;
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int mixer_init(const char *name) {
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unsigned int i;
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if (name == 0 || name[0] == '\0') { name = "vol"; }
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/* open mixer */
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if (mixer_fd <= 0) {
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mixer_fd = open(MIXER_DEV, O_RDONLY);
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if (mixer_fd == -1) {
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NORM_ERR("can't open %s: %s", MIXER_DEV, strerror(errno));
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return -1;
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}
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}
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for (i = 0; i < sizeof(devs) / sizeof(const char *); i++) {
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if (strcasecmp(devs[i], name) == 0) { return i; }
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}
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return -1;
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}
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static int mixer_get(int i) {
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static char rep = 0;
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int val = -1;
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if (ioctl(mixer_fd, MIXER_READ(i), &val) == -1) {
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if (!rep) { NORM_ERR("mixer ioctl: %s", strerror(errno)); }
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rep = 1;
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return 0;
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}
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rep = 0;
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return val;
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}
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static int mixer_get_avg(int i) {
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int v = mixer_get(i);
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return ((v >> 8) + (v & 0xFF)) / 2;
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}
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static int mixer_get_left(int i) { return mixer_get(i) >> 8; }
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static int mixer_get_right(int i) { return mixer_get(i) & 0xFF; }
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int mixer_is_mute(int i) { return !mixer_get(i); }
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#define mixer_to_255(i, x) x
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void parse_mixer_arg(struct text_object *obj, const char *arg) {
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obj->data.l = mixer_init(arg);
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}
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uint8_t mixer_percentage(struct text_object *obj) {
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return mixer_get_avg(obj->data.l);
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}
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uint8_t mixerl_percentage(struct text_object *obj) {
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return mixer_get_left(obj->data.l);
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}
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uint8_t mixerr_percentage(struct text_object *obj) {
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return mixer_get_right(obj->data.l);
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}
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int check_mixer_muted(struct text_object *obj) {
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if (!mixer_is_mute(obj->data.l)) return 0;
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return 1;
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}
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void scan_mixer_bar(struct text_object *obj, const char *arg) {
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char buf1[64];
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int n;
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if (arg && sscanf(arg, "%63s %n", buf1, &n) >= 1) {
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obj->data.i = mixer_init(buf1);
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scan_bar(obj, arg + n, 100);
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} else {
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obj->data.i = mixer_init(nullptr);
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scan_bar(obj, arg, 100);
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}
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}
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double mixer_barval(struct text_object *obj) {
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return mixer_to_255(obj->data.i, mixer_get_avg(obj->data.i));
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}
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double mixerl_barval(struct text_object *obj) {
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return mixer_to_255(obj->data.i, mixer_get_left(obj->data.i));
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}
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double mixerr_barval(struct text_object *obj) {
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return mixer_to_255(obj->data.i, mixer_get_right(obj->data.i));
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}
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