mirror of
https://github.com/alsa-project/alsa-utils
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6d32e055d7
shortly explain the "names" command in the help text From: Tomas Pospisek <tpo2@sourcepole.ch>
125 lines
3.6 KiB
C
125 lines
3.6 KiB
C
/*
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* Advanced Linux Sound Architecture Control Program
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* Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
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* Jaroslav Kysela <perex@suse.cz>
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*
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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 2 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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*
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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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "aconfig.h"
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#include "version.h"
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#include <getopt.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <assert.h>
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#include <errno.h>
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#include <alsa/asoundlib.h>
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#include "alsactl.h"
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#define SYS_ASOUNDRC "/etc/asound.state"
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#define SYS_ASOUNDNAMES "/etc/asound.names"
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int debugflag = 0;
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int force_restore = 0;
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char *command;
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static void help(void)
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{
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printf("Usage: alsactl <options> command\n");
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printf("\nAvailable options:\n");
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printf(" -h,--help this help\n");
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printf(" -f,--file # configuration file (default " SYS_ASOUNDRC " or " SYS_ASOUNDNAMES ")\n");
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printf(" -F,--force try to restore the matching controls as much as possible\n");
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printf(" -d,--debug debug mode\n");
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printf(" -v,--version print version of this program\n");
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printf("\nAvailable commands:\n");
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printf(" store <card #> save current driver setup for one or each soundcards\n");
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printf(" to configuration file\n");
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printf(" restore <card #> load current driver setup for one or each soundcards\n");
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printf(" from configuration file\n");
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printf(" names <card #> dump information about all the known present (sub-)devices\n");
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printf(" into configuration file (DEPRECATED)\n");
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}
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int main(int argc, char *argv[])
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{
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struct option long_option[] =
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{
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{"help", 0, NULL, 'h'},
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{"file", 1, NULL, 'f'},
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{"force", 0, NULL, 'F'},
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{"debug", 0, NULL, 'd'},
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{"version", 0, NULL, 'v'},
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{NULL, 0, NULL, 0},
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};
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char *cfgfile = SYS_ASOUNDRC;
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int res;
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command = argv[0];
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while (1) {
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int c;
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if ((c = getopt_long(argc, argv, "hf:Fdv", long_option, NULL)) < 0)
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break;
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switch (c) {
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case 'h':
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help();
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return EXIT_SUCCESS;
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case 'f':
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cfgfile = optarg;
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break;
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case 'F':
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force_restore = 1;
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break;
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case 'd':
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debugflag = 1;
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break;
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case 'v':
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printf("alsactl version " SND_UTIL_VERSION_STR "\n");
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return EXIT_SUCCESS;
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case '?': // error msg already printed
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help();
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return EXIT_FAILURE;
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break;
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default: // should never happen
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fprintf(stderr,
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"Invalid option '%c' (%d) not handled??\n", c, c);
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}
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}
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if (argc - optind <= 0) {
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fprintf(stderr, "alsactl: Specify command...\n");
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return 0;
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}
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if (!strcmp(argv[optind], "store")) {
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res = save_state(cfgfile,
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argc - optind > 1 ? argv[optind + 1] : NULL);
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} else if (!strcmp(argv[optind], "restore")) {
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res = load_state(cfgfile,
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argc - optind > 1 ? argv[optind + 1] : NULL);
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} else if (!strcmp(argv[optind], "names")) {
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if (!strcmp(cfgfile, SYS_ASOUNDRC))
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cfgfile = SYS_ASOUNDNAMES;
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res = generate_names(cfgfile);
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} else {
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fprintf(stderr, "alsactl: Unknown command '%s'...\n",
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argv[optind]);
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res = -ENODEV;
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}
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return res < 0 ? res : 0;
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}
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