alsamixer/cli.c

   1 /*
   2  * alsamixer - curses mixer for the ALSA project
   3  * Copyright (c) 1998,1999 Tim Janik
   4  *                         Jaroslav Kysela <perex@perex.cz>
   5  * Copyright (c) 2009      Clemens Ladisch <clemens@ladisch.de>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "aconfig.h"
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <locale.h>
  25 #include <getopt.h>
  26 #include <alsa/asoundlib.h>
  27 #include "gettext_curses.h"
  28 #include "mixer_widget.h"
  29 #include "mainloop.h"
  30
  31 static int use_color = 1;
  32 static struct snd_mixer_selem_regopt selem_regopt = {
  33         .ver = 1,
  34         .abstract = SND_MIXER_SABSTRACT_NONE,
  35         .device = "default",
  36 };
  37
  38 static void show_help(void)
  39 {
  40         puts(_("Usage: alsamixer [options]"));
  41         puts(_("Useful options:\n"
  42                "  -h, --help              this help\n"
  43                "  -c, --card=NUMBER       sound card number or id\n"
  44                "  -D, --device=NAME       mixer device name\n"
  45                "  -V, --view=MODE         starting view mode: playback/capture/all"));
  46         puts(_("Debugging options:\n"
  47                "  -g, --no-color          toggle using of colors\n"
  48                "  -a, --abstraction=NAME  mixer abstraction level: none/basic"));
  49 }
  50
  51 static void parse_options(int argc, char *argv[])
  52 {
  53         static const char short_options[] = "hc:D:V:gsa:";
  54         static const struct option long_options[] = {
  55                 { .name = "help", .val = 'h' },
  56                 { .name = "card", .has_arg = 1, .val = 'c' },
  57                 { .name = "device", .has_arg = 1, .val = 'D' },
  58                 { .name = "view", .has_arg = 1, .val = 'V' },
  59                 { .name = "no-color", .val = 'g' },
  60                 { .name = "abstraction", .has_arg = 1, .val = 'a' },
  61                 { }
  62         };
  63         int option;
  64         int card_index;
  65         static char name_buf[16];
  66
  67         while ((option = getopt_long(argc, argv, short_options,
  68                                      long_options, NULL)) != -1) {
  69                 switch (option) {
  70                 case '?':
  71                 case 'h':
  72                         show_help();
  73                         exit(EXIT_SUCCESS);
  74                 case 'c':
  75                         card_index = snd_card_get_index(optarg);
  76                         if (card_index < 0) {
  77                                 fprintf(stderr, _("invalid card index: %s\n"), optarg);
  78                                 goto fail;
  79                         }
  80                         sprintf(name_buf, "hw:%d", card_index);
  81                         selem_regopt.device = name_buf;
  82                         break;
  83                 case 'D':
  84                         selem_regopt.device = optarg;
  85                         break;
  86                 case 'V':
  87                         if (*optarg == 'p' || *optarg == 'P')
  88                                 view_mode = VIEW_MODE_PLAYBACK;
  89                         else if (*optarg == 'c' || *optarg == 'C')
  90                                 view_mode = VIEW_MODE_CAPTURE;
  91                         else
  92                                 view_mode = VIEW_MODE_ALL;
  93                         break;
  94                 case 'g':
  95                         use_color = !use_color;
  96                         break;
  97                 case 'a':
  98                         if (!strcmp(optarg, "none"))
  99                                 selem_regopt.abstract = SND_MIXER_SABSTRACT_NONE;
 100                         else if (!strcmp(optarg, "basic"))
 101                                 selem_regopt.abstract = SND_MIXER_SABSTRACT_BASIC;
 102                         else {
 103                                 fprintf(stderr, _("unknown abstraction level: %s\n"), optarg);
 104                                 goto fail;
 105                         }
 106                         break;
 107                 default:
 108                         fprintf(stderr, _("unknown option: %c\n"), option);
 109 fail:
 110                         fputs(_("try `alsamixer --help' for more information\n"), stderr);
 111                         exit(EXIT_FAILURE);
 112                 }
 113         }
 114 }
 115
 116 int main(int argc, char *argv[])
 117 {
 118         if (!isatty(fileno(stdin)))
 119                 return 0;
 120
 121         setlocale(LC_ALL, "");
 122 #ifdef ENABLE_NLS_IN_CURSES
 123         textdomain(PACKAGE);
 124 #endif
 125
 126         parse_options(argc, argv);
 127
 128         create_mixer_object(&selem_regopt);
 129
 130         initialize_curses(use_color);
 131
 132         create_mixer_widget();
 133
 134         mainloop();
 135
 136         app_shutdown();
 137         return 0;
 138 }