mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-09 02:45:42 +01:00
546 lines
14 KiB
C
546 lines
14 KiB
C
/*
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* Advanced Linux Sound Architecture Control Program - ALSA Device Names
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* Copyright (c) 2005 by 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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typedef int (probe_single)(int card, snd_ctl_t *ctl, snd_config_t *config);
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static int globidx;
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static void dummy_error_handler(const char *file, int line, const char *function, int err, const char *fmt, ...)
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{
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}
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static int for_each_card(probe_single *fcn, snd_config_t *config)
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{
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int card = -1, first = 1, err;
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snd_ctl_t *ctl;
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char ctlname[16];
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while (1) {
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if (snd_card_next(&card) < 0)
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break;
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if (card < 0) {
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if (first) {
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error("No soundcards found...");
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return -ENODEV;
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}
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break;
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}
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first = 0;
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sprintf(ctlname, "hw:%i", card);
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err = snd_ctl_open(&ctl, ctlname, 0);
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if (err < 0)
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return err;
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err = (fcn)(card, ctl, config);
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snd_ctl_close(ctl);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static int add_entry(snd_config_t *cfg, const char *name,
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const char *cprefix, const char *flag,
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const char *comment)
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{
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int err;
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snd_config_t *c, *d;
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char id[16];
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char xcomment[256];
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char *flag0 = " (", *flag1 = ")";
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if (cprefix == NULL)
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cprefix = "";
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if (flag == NULL) {
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flag0 = "";
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flag = "";
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flag1 = "";
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}
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sprintf(xcomment, "%s - %s%s%s%s", cprefix, comment, flag0, flag, flag1);
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sprintf(id, "alsactl%i", globidx++);
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err = snd_config_make_compound(&c, id, 0);
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if (err < 0)
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return err;
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err = snd_config_add(cfg, c);
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if (err < 0)
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return err;
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err = snd_config_make_string(&d, "name");
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if (err < 0)
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return err;
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err = snd_config_set_string(d, name);
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if (err < 0)
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return err;
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err = snd_config_add(c, d);
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if (err < 0)
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return err;
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err = snd_config_make_string(&d, "comment");
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if (err < 0)
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return err;
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err = snd_config_set_string(d, xcomment);
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if (err < 0)
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return err;
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err = snd_config_add(c, d);
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if (err < 0)
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return err;
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return 0;
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}
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static int probe_ctl_card(int card, snd_ctl_t *ctl, snd_config_t *config)
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{
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int err;
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snd_ctl_card_info_t * info;
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char name[16];
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const char *dname;
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snd_ctl_card_info_alloca(&info);
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err = snd_ctl_card_info(ctl, info);
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if (err < 0) {
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error("Unable to get info for card %i: %s\n", card, snd_strerror(err));
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return err;
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}
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sprintf(name, "hw:%i", card);
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dname = snd_ctl_card_info_get_longname(info);
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err = add_entry(config, name, "Physical Device", NULL, dname);
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if (err < 0)
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return err;
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return 0;
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}
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static int probe_ctl(snd_config_t *config)
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{
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int err;
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snd_config_t *c;
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err = snd_config_make_compound(&c, "ctl", 0);
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if (err < 0)
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return err;
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err = snd_config_add(config, c);
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if (err < 0)
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return err;
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err = for_each_card(probe_ctl_card, c);
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if (err < 0)
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return err;
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return 0;
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}
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static int probe_pcm_virtual(int card, snd_ctl_t *ctl, snd_config_t *config,
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const char *name, const char *comment)
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{
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snd_pcm_t *pcm1, *pcm2;
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int err1, err2, playback, capture, err;
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char name1[32], name2[32], *flag;
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if (!debugflag)
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snd_lib_error_set_handler(dummy_error_handler);
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sprintf(name1, name, card);
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sprintf(name2, "plug:%s", name1);
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err1 = snd_pcm_open(&pcm1, name1, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
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err2 = snd_pcm_open(&pcm2, name1, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
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snd_lib_error_set_handler(NULL);
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if (err1 >= 0)
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snd_pcm_close(pcm1);
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if (err2 >= 0)
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snd_pcm_close(pcm2);
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playback = (err1 == 0 || err1 == -EBUSY);
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capture = (err2 == 0 || err2 == -EBUSY);
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if (playback && capture)
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flag = "Duplex";
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else if (playback)
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flag = "Playback";
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else if (capture)
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flag = "Capture";
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else
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return 0;
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err = add_entry(config, name1, "Abstract Device", flag, comment);
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if (err >= 0)
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err = add_entry(config, name2, "Abstract Device With Conversions", flag, comment);
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return err;
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}
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static int probe_pcm_card(int card, snd_ctl_t *ctl, snd_config_t *config)
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{
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int dev = -1, err, err1, err2;
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snd_pcm_info_t * info1, * info2;
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snd_pcm_class_t class;
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char name[16];
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const char *dname;
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char *flag;
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int first = 1, idx;
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static const char *vnames1[] = {
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"default:%i", "Default Device",
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"front:%i", "Front Speakers",
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"rear:%i", "Rear Speakers",
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NULL
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};
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static const char *vnames2[] = {
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"surround40:%i", "Front and Rear Speakers",
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"surround51:%i", "Front, Rear, Center and Woofer",
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"surround71:%i", "Front, Rear, Side, Center and Woofer",
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"spdif:%i", "S/PDIF (IEC958) Optical or Coaxial Wire",
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NULL
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};
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snd_pcm_info_alloca(&info1);
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snd_pcm_info_alloca(&info2);
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while (1) {
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err = snd_ctl_pcm_next_device(ctl, &dev);
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if (err < 0)
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return err;
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if (dev < 0)
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break;
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memset(info1, 0, snd_pcm_info_sizeof());
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snd_pcm_info_set_device(info1, dev);
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snd_pcm_info_set_stream(info1, SND_PCM_STREAM_PLAYBACK);
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err1 = snd_ctl_pcm_info(ctl, info1);
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memset(info2, 0, snd_pcm_info_sizeof());
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snd_pcm_info_set_device(info2, dev);
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snd_pcm_info_set_stream(info2, SND_PCM_STREAM_CAPTURE);
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err2 = snd_ctl_pcm_info(ctl, info2);
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if (err1 < 0 && err2 < 0) {
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error("Unable to get info for pcm device %i:%i: %s\n", card, dev, snd_strerror(err1));
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continue;
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}
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dname = snd_pcm_info_get_name(info1);
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class = snd_pcm_info_get_class(info1);
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if (err1 == 0 && err2 == 0)
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flag = "Duplex";
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else if (err1 == 0)
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flag = "Playback";
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else {
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flag = "Capture";
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dname = snd_pcm_info_get_name(info2);
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class = snd_pcm_info_get_class(info2);
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}
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if (class != SND_PCM_CLASS_GENERIC &&
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class != SND_PCM_CLASS_MULTI) /* skip this */
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continue;
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if (first) {
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for (idx = 0; vnames1[idx] != NULL; idx += 2)
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probe_pcm_virtual(card, ctl, config, vnames1[idx], vnames1[idx+1]);
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}
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first = 0;
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sprintf(name, "hw:%i,%i", card, dev);
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err = add_entry(config, name, "Physical Device", flag, dname);
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if (err < 0)
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return err;
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sprintf(name, "plughw:%i,%i", card, dev);
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err = add_entry(config, name, "Physical Device With Conversions", flag, dname);
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if (err < 0)
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return err;
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}
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if (!first) {
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for (idx = 0; vnames2[idx] != NULL; idx += 2)
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probe_pcm_virtual(card, ctl, config, vnames2[idx], vnames2[idx+1]);
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}
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return 0;
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}
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static int probe_pcm(snd_config_t *config)
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{
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int err;
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snd_config_t *c;
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err = snd_config_make_compound(&c, "pcm", 0);
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if (err < 0)
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return err;
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err = snd_config_add(config, c);
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if (err < 0)
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return err;
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err = for_each_card(probe_pcm_card, c);
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if (err < 0)
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return err;
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return 0;
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}
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static int probe_rawmidi_virtual(snd_config_t *config,
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const char *name, const char *comment)
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{
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snd_rawmidi_t *rawmidi1, *rawmidi2;
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int err1, err2, playback, capture, err;
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char *flag;
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if (!debugflag)
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snd_lib_error_set_handler(dummy_error_handler);
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err1 = snd_rawmidi_open(NULL, &rawmidi1, name, SND_RAWMIDI_NONBLOCK);
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err2 = snd_rawmidi_open(&rawmidi2, NULL, name, SND_RAWMIDI_NONBLOCK);
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snd_lib_error_set_handler(NULL);
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if (err1 >= 0)
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snd_rawmidi_close(rawmidi1);
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if (err2 >= 0)
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snd_rawmidi_close(rawmidi2);
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playback = (err1 == 0 || err1 == -EBUSY);
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capture = (err2 == 0 || err2 == -EBUSY);
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if (playback && capture)
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flag = "Duplex";
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else if (playback)
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flag = "Playback";
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else if (capture)
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flag = "Capture";
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else
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return 0;
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err = add_entry(config, name, "Abstract Device", flag, comment);
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return err;
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}
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static int probe_rawmidi_card(int card, snd_ctl_t *ctl, snd_config_t *config)
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{
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int dev = -1, err, err1, err2;
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snd_rawmidi_info_t * info1, * info2;
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char name[16];
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const char *dname;
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const char *subname;
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char *flag;
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int subdev;
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snd_rawmidi_info_alloca(&info1);
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snd_rawmidi_info_alloca(&info2);
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while (1) {
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err = snd_ctl_rawmidi_next_device(ctl, &dev);
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if (err < 0)
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return err;
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if (dev < 0)
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break;
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memset(info1, 0, snd_rawmidi_info_sizeof());
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snd_rawmidi_info_set_device(info1, dev);
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snd_rawmidi_info_set_stream(info1, SND_RAWMIDI_STREAM_OUTPUT);
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err1 = snd_ctl_rawmidi_info(ctl, info1);
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memset(info2, 0, snd_rawmidi_info_sizeof());
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snd_rawmidi_info_set_device(info2, dev);
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snd_rawmidi_info_set_stream(info2, SND_RAWMIDI_STREAM_INPUT);
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err2 = snd_ctl_rawmidi_info(ctl, info2);
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if (err1 < 0 && err2 < 0) {
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error("Unable to get info for rawmidi device %i:%i: %s\n", card, dev, snd_strerror(err1));
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continue;
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}
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dname = snd_rawmidi_info_get_name(info1);
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subname = snd_rawmidi_info_get_subdevice_name(info1);
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if (err1 == 0 && err2 == 0)
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flag = "Duplex";
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else if (err1 == 0)
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flag = "Output";
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else {
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flag = "Input";
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dname = snd_rawmidi_info_get_name(info2);
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subname = snd_rawmidi_info_get_subdevice_name(info2);
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}
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if (subname[0] == '\0') {
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sprintf(name, "hw:%i,%i", card, dev);
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err = add_entry(config, name, "Physical Device", flag, dname);
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if (err < 0)
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return err;
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} else {
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subdev = 0;
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do {
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sprintf(name, "hw:%i,%i,%i", card, dev, subdev);
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if (err1 == 0)
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subname = snd_rawmidi_info_get_subdevice_name(info1);
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else
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subname = snd_rawmidi_info_get_subdevice_name(info2);
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if (err1 == 0 && err2 == 0)
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flag = "Duplex";
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else if (err1 == 0)
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flag = "Output";
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else
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flag = "Input";
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err = add_entry(config, name, "Physical Device", flag, subname);
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if (err < 0)
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return err;
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++subdev;
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snd_rawmidi_info_set_subdevice(info1, subdev);
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snd_rawmidi_info_set_subdevice(info2, subdev);
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err1 = snd_ctl_rawmidi_info(ctl, info1);
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err2 = snd_ctl_rawmidi_info(ctl, info2);
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} while (err1 == 0 || err2 == 0);
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}
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}
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return 0;
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}
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static int probe_rawmidi(snd_config_t *config)
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{
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int err;
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snd_config_t *c;
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err = snd_config_make_compound(&c, "rawmidi", 0);
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if (err < 0)
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return err;
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err = snd_config_add(config, c);
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if (err < 0)
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return err;
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err = probe_rawmidi_virtual(c, "default", "Default Device");
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if (err < 0)
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return err;
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err = for_each_card(probe_rawmidi_card, c);
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if (err < 0)
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return err;
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err = add_entry(c, "virtual", "Virtual Device", "Duplex", "Sequencer");
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if (err < 0)
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return err;
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err = add_entry(c, "virtual:MERGE=0", "Virtual Device", "Duplex", "Sequencer (No Merge)");
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if (err < 0)
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return err;
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return 0;
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}
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static int probe_timers(snd_config_t *config)
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{
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int err;
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snd_timer_query_t *handle;
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snd_timer_id_t *id;
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snd_timer_ginfo_t *info;
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char name[64];
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const char *dname;
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err = snd_timer_query_open(&handle, "default", 0);
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if (err < 0)
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return err;
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snd_timer_id_alloca(&id);
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snd_timer_ginfo_alloca(&info);
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snd_timer_id_set_class(id, SND_TIMER_CLASS_NONE);
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while (1) {
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err = snd_timer_query_next_device(handle, id);
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if (err < 0)
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goto _err;
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if (snd_timer_id_get_class(id) < 0)
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break;
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if (snd_timer_id_get_class(id) == SND_TIMER_CLASS_PCM)
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continue;
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snd_timer_ginfo_set_tid(info, id);
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err = snd_timer_query_info(handle, info);
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if (err < 0)
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continue;
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sprintf(name, "hw:CLASS=%i,SCLASS=%i,CARD=%i,DEV=%i,SUBDEV=%i",
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snd_timer_id_get_class(id),
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snd_timer_id_get_sclass(id),
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snd_timer_id_get_card(id),
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snd_timer_id_get_device(id),
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snd_timer_id_get_subdevice(id));
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dname = snd_timer_ginfo_get_name(info);
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err = add_entry(config, name, "Physical Device", NULL, dname);
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if (err < 0)
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goto _err;
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}
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err = 0;
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_err:
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snd_timer_query_close(handle);
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return err;
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}
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static int probe_timer(snd_config_t *config)
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{
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int err;
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snd_config_t *c;
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err = snd_config_make_compound(&c, "timer", 0);
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if (err < 0)
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return err;
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err = snd_config_add(config, c);
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if (err < 0)
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return err;
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err = probe_timers(c);
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if (err < 0)
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return err;
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return 0;
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}
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static int probe_seq(snd_config_t *config)
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{
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int err;
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snd_config_t *c;
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err = snd_config_make_compound(&c, "seq", 0);
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if (err < 0)
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return err;
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err = snd_config_add(config, c);
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if (err < 0)
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return err;
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err = add_entry(c, "default", "Default Device", "Duplex", "Sequencer");
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if (err < 0)
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return err;
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err = add_entry(c, "hw", "Physical Device", "Duplex", "Sequencer");
|
|
if (err < 0)
|
|
return err;
|
|
return 0;
|
|
}
|
|
|
|
typedef int (probe_fcn)(snd_config_t *config);
|
|
|
|
static probe_fcn * probes[] = {
|
|
probe_ctl,
|
|
probe_pcm,
|
|
probe_rawmidi,
|
|
probe_timer,
|
|
probe_seq,
|
|
NULL
|
|
};
|
|
|
|
int generate_names(const char *cfgfile)
|
|
{
|
|
int err, idx;
|
|
snd_config_t *config;
|
|
snd_output_t *out;
|
|
int stdio, ok = 0;
|
|
|
|
err = snd_config_top(&config);
|
|
if (err < 0) {
|
|
error("snd_config_top error: %s", snd_strerror(err));
|
|
return err;
|
|
}
|
|
for (idx = 0; probes[idx]; idx++) {
|
|
globidx = 1;
|
|
err = (probes[idx])(config);
|
|
if (err < 0) {
|
|
/* ignore -ENOTTY indicating the non-existing component */
|
|
if (err != -ENOTTY)
|
|
error("probe %i failed: %s", idx, snd_strerror(err));
|
|
} else {
|
|
ok++;
|
|
}
|
|
}
|
|
if (ok > 0) {
|
|
stdio = !strcmp(cfgfile, "-");
|
|
if (stdio) {
|
|
err = snd_output_stdio_attach(&out, stdout, 0);
|
|
} else {
|
|
err = snd_output_stdio_open(&out, cfgfile, "w+");
|
|
}
|
|
if (err < 0) {
|
|
error("Cannot open %s for writing", cfgfile);
|
|
return -errno;
|
|
}
|
|
err = snd_config_save(config, out);
|
|
snd_output_close(out);
|
|
if (err < 0)
|
|
error("snd_config_save: %s", snd_strerror(err));
|
|
} else {
|
|
return -ENOENT;
|
|
}
|
|
return 0;
|
|
}
|