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Sourcecode: alsa-utils version File versions  Download package

alsactl.c

/*
 *  Advanced Linux Sound Architecture Control Program
 *  Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
 *                   Jaroslav Kysela <perex@suse.cz>
 *
 *
 *   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; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   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, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include "aconfig.h"
#include "version.h"
#include <getopt.h>
#include <stdarg.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <alsa/asoundlib.h>
#include "alsactl.h"

#define SYS_ASOUNDRC "/etc/asound.state"
#define SYS_ASOUNDNAMES "/etc/asound.names"

int debugflag = 0;
int force_restore = 0;
char *command;

static void help(void)
{
      printf("Usage: alsactl <options> command\n");
      printf("\nAvailable options:\n");
      printf("  -h,--help       this help\n");
      printf("  -f,--file #     configuration file (default " SYS_ASOUNDRC " or " SYS_ASOUNDNAMES ")\n");
      printf("  -F,--force      try to restore the matching controls as much as possible\n");
      printf("  -d,--debug      debug mode\n");
      printf("  -v,--version    print version of this program\n");
      printf("\nAvailable commands:\n");
      printf("  store <card #>  save current driver setup for one or each soundcards\n");
      printf("                  to configuration file\n");
      printf("  restore<card #> load current driver setup for one or each soundcards\n");
      printf("                  from configuration file\n");
}

int main(int argc, char *argv[])
{
      struct option long_option[] =
      {
            {"help", 0, NULL, 'h'},
            {"file", 1, NULL, 'f'},
            {"force", 0, NULL, 'F'},
            {"debug", 0, NULL, 'd'},
            {"version", 0, NULL, 'v'},
            {NULL, 0, NULL, 0},
      };
      char *cfgfile = SYS_ASOUNDRC;
      int res;

      command = argv[0];
      while (1) {
            int c;

            if ((c = getopt_long(argc, argv, "hf:Fdv", long_option, NULL)) < 0)
                  break;
            switch (c) {
            case 'h':
                  help();
                  return EXIT_SUCCESS;
            case 'f':
                  cfgfile = optarg;
                  break;
            case 'F':
                  force_restore = 1;
                  break;
            case 'd':
                  debugflag = 1;
                  break;
            case 'v':
                  printf("alsactl version " SND_UTIL_VERSION_STR "\n");
                  return EXIT_SUCCESS;
            case '?':         // error msg already printed
                  help();
                  return EXIT_FAILURE;
                  break;
            default:          // should never happen
                  fprintf(stderr, 
                  "Invalid option '%c' (%d) not handled??\n", c, c);
            }
      }
      if (argc - optind <= 0) {
            fprintf(stderr, "alsactl: Specify command...\n");
            return 0;
      }

      if (!strcmp(argv[optind], "store")) {
            res =  save_state(cfgfile,
               argc - optind > 1 ? argv[optind + 1] : NULL);
      } else if (!strcmp(argv[optind], "restore")) {
            res = load_state(cfgfile, 
               argc - optind > 1 ? argv[optind + 1] : NULL);
      } else if (!strcmp(argv[optind], "names")) {
            if (!strcmp(cfgfile, SYS_ASOUNDRC))
                  cfgfile = SYS_ASOUNDNAMES;
            res = generate_names(cfgfile);
      } else {
            fprintf(stderr, "alsactl: Unknown command '%s'...\n", 
                  argv[optind]);
            res = -ENODEV;
      }

      return res < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}

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