mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-09-20 01:59:57 +02:00
1259 lines
31 KiB
C
1259 lines
31 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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char *id_str(snd_ctl_elem_id_t *id)
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{
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static char str[128];
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assert(id);
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sprintf(str, "%i,%i,%i,%s,%i",
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snd_ctl_elem_id_get_interface(id),
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snd_ctl_elem_id_get_device(id),
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snd_ctl_elem_id_get_subdevice(id),
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snd_ctl_elem_id_get_name(id),
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snd_ctl_elem_id_get_index(id));
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return str;
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}
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char *num_str(long n)
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{
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static char str[32];
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sprintf(str, "%ld", n);
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return str;
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}
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static int snd_config_integer_add(snd_config_t *father, char *id, long integer)
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{
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int err;
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snd_config_t *leaf;
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err = snd_config_make_integer(&leaf, id);
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if (err < 0)
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return err;
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err = snd_config_add(father, leaf);
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if (err < 0) {
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snd_config_delete(leaf);
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return err;
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}
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err = snd_config_set_integer(leaf, integer);
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if (err < 0) {
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snd_config_delete(leaf);
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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 snd_config_integer64_add(snd_config_t *father, char *id, long long integer)
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{
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int err;
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snd_config_t *leaf;
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err = snd_config_make_integer64(&leaf, id);
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if (err < 0)
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return err;
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err = snd_config_add(father, leaf);
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if (err < 0) {
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snd_config_delete(leaf);
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return err;
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}
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err = snd_config_set_integer64(leaf, integer);
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if (err < 0) {
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snd_config_delete(leaf);
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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 snd_config_string_add(snd_config_t *father, const char *id, const char *string)
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{
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int err;
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snd_config_t *leaf;
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err = snd_config_make_string(&leaf, id);
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if (err < 0)
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return err;
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err = snd_config_add(father, leaf);
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if (err < 0) {
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snd_config_delete(leaf);
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return err;
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}
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err = snd_config_set_string(leaf, string);
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if (err < 0) {
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snd_config_delete(leaf);
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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 snd_config_compound_add(snd_config_t *father, const char *id, int join,
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snd_config_t **node)
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{
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int err;
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snd_config_t *leaf;
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err = snd_config_make_compound(&leaf, id, join);
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if (err < 0)
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return err;
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err = snd_config_add(father, leaf);
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if (err < 0) {
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snd_config_delete(leaf);
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return err;
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}
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*node = leaf;
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return 0;
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}
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static int get_control(snd_ctl_t *handle, snd_ctl_elem_id_t *id, snd_config_t *top)
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{
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snd_ctl_elem_value_t *ctl;
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snd_ctl_elem_info_t *info;
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snd_config_t *control, *comment, *item, *value;
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const char *s;
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char buf[256];
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unsigned int idx;
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int err;
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unsigned int device, subdevice, index;
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const char *name;
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snd_ctl_elem_type_t type;
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unsigned int count;
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snd_ctl_elem_value_alloca(&ctl);
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snd_ctl_elem_info_alloca(&info);
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snd_ctl_elem_info_set_id(info, id);
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err = snd_ctl_elem_info(handle, info);
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if (err < 0) {
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error("Cannot read control info '%s': %s", id_str(id), snd_strerror(err));
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return err;
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}
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if (!snd_ctl_elem_info_is_readable(info))
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return 0;
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snd_ctl_elem_value_set_id(ctl, id);
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err = snd_ctl_elem_read(handle, ctl);
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if (err < 0) {
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error("Cannot read control '%s': %s", id_str(id), snd_strerror(err));
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return err;
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}
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err = snd_config_compound_add(top, num_str(snd_ctl_elem_info_get_numid(info)), 0, &control);
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if (err < 0) {
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error("snd_config_compound_add: %s", snd_strerror(err));
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return err;
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}
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err = snd_config_compound_add(control, "comment", 1, &comment);
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if (err < 0) {
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error("snd_config_compound_add: %s", snd_strerror(err));
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return err;
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}
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buf[0] = '\0';
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buf[1] = '\0';
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if (snd_ctl_elem_info_is_readable(info))
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strcat(buf, " read");
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if (snd_ctl_elem_info_is_writable(info))
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strcat(buf, " write");
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if (snd_ctl_elem_info_is_inactive(info))
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strcat(buf, " inactive");
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if (snd_ctl_elem_info_is_volatile(info))
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strcat(buf, " volatile");
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if (snd_ctl_elem_info_is_locked(info))
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strcat(buf, " locked");
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if (snd_ctl_elem_info_is_user(info))
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strcat(buf, " user");
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err = snd_config_string_add(comment, "access", buf + 1);
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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type = snd_ctl_elem_info_get_type(info);
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device = snd_ctl_elem_info_get_device(info);
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subdevice = snd_ctl_elem_info_get_subdevice(info);
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index = snd_ctl_elem_info_get_index(info);
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name = snd_ctl_elem_info_get_name(info);
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count = snd_ctl_elem_info_get_count(info);
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s = snd_ctl_elem_type_name(type);
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err = snd_config_string_add(comment, "type", s);
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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err = snd_config_integer_add(comment, "count", count);
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if (err < 0) {
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error("snd_config_integer_add: %s", snd_strerror(err));
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return err;
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}
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switch (type) {
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case SND_CTL_ELEM_TYPE_BOOLEAN:
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break;
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case SND_CTL_ELEM_TYPE_INTEGER:
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{
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long min = snd_ctl_elem_info_get_min(info);
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long max = snd_ctl_elem_info_get_max(info);
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long step = snd_ctl_elem_info_get_step(info);
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if (step)
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sprintf(buf, "%li - %li (step %li)", min, max, step);
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else
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sprintf(buf, "%li - %li", min, max);
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err = snd_config_string_add(comment, "range", buf);
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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break;
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}
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case SND_CTL_ELEM_TYPE_INTEGER64:
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{
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long long min = snd_ctl_elem_info_get_min64(info);
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long long max = snd_ctl_elem_info_get_max64(info);
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long long step = snd_ctl_elem_info_get_step64(info);
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if (step)
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sprintf(buf, "%Li - %Li (step %Li)", min, max, step);
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else
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sprintf(buf, "%Li - %Li", min, max);
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err = snd_config_string_add(comment, "range", buf);
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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break;
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}
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case SND_CTL_ELEM_TYPE_ENUMERATED:
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{
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unsigned int items;
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err = snd_config_compound_add(comment, "item", 1, &item);
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if (err < 0) {
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error("snd_config_compound_add: %s", snd_strerror(err));
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return err;
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}
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items = snd_ctl_elem_info_get_items(info);
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for (idx = 0; idx < items; idx++) {
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snd_ctl_elem_info_set_item(info, idx);
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err = snd_ctl_elem_info(handle, info);
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if (err < 0) {
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error("snd_ctl_card_info: %s", snd_strerror(err));
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return err;
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}
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err = snd_config_string_add(item, num_str(idx), snd_ctl_elem_info_get_item_name(info));
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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}
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break;
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}
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default:
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break;
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}
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s = snd_ctl_elem_iface_name(snd_ctl_elem_info_get_interface(info));
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err = snd_config_string_add(control, "iface", s);
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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if (device != 0) {
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err = snd_config_integer_add(control, "device", device);
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if (err < 0) {
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error("snd_config_integer_add: %s", snd_strerror(err));
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return err;
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}
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}
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if (subdevice != 0) {
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err = snd_config_integer_add(control, "subdevice", subdevice);
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if (err < 0) {
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error("snd_config_integer_add: %s", snd_strerror(err));
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return err;
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}
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}
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err = snd_config_string_add(control, "name", name);
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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if (index != 0) {
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err = snd_config_integer_add(control, "index", index);
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if (err < 0) {
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error("snd_config_integer_add: %s", snd_strerror(err));
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return err;
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}
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}
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switch (type) {
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case SND_CTL_ELEM_TYPE_BYTES:
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case SND_CTL_ELEM_TYPE_IEC958:
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{
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size_t size = type == SND_CTL_ELEM_TYPE_BYTES ?
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count : sizeof(snd_aes_iec958_t);
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char buf[size * 2 + 1];
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char *p = buf;
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char *hex = "0123456789abcdef";
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const unsigned char *bytes =
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(const unsigned char *)snd_ctl_elem_value_get_bytes(ctl);
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for (idx = 0; idx < size; idx++) {
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int v = bytes[idx];
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*p++ = hex[v >> 4];
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*p++ = hex[v & 0x0f];
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}
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*p = '\0';
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err = snd_config_string_add(control, "value", buf);
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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return 0;
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}
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default:
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break;
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}
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if (count == 1) {
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switch (type) {
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case SND_CTL_ELEM_TYPE_BOOLEAN:
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err = snd_config_string_add(control, "value", snd_ctl_elem_value_get_boolean(ctl, 0) ? "true" : "false");
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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return 0;
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case SND_CTL_ELEM_TYPE_INTEGER:
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err = snd_config_integer_add(control, "value", snd_ctl_elem_value_get_integer(ctl, 0));
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if (err < 0) {
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error("snd_config_integer_add: %s", snd_strerror(err));
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return err;
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}
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return 0;
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case SND_CTL_ELEM_TYPE_INTEGER64:
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err = snd_config_integer64_add(control, "value", snd_ctl_elem_value_get_integer64(ctl, 0));
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if (err < 0) {
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error("snd_config_integer64_add: %s", snd_strerror(err));
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return err;
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}
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return 0;
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case SND_CTL_ELEM_TYPE_ENUMERATED:
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{
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unsigned int v = snd_ctl_elem_value_get_enumerated(ctl, 0);
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snd_config_t *c;
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err = snd_config_search(item, num_str(v), &c);
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if (err == 0) {
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err = snd_config_get_string(c, &s);
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assert(err == 0);
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err = snd_config_string_add(control, "value", s);
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} else {
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err = snd_config_integer_add(control, "value", v);
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}
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if (err < 0)
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error("snd_config add: %s", snd_strerror(err));
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return 0;
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}
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default:
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error("Unknown control type: %d\n", type);
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return -EINVAL;
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}
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}
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err = snd_config_compound_add(control, "value", 1, &value);
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if (err < 0) {
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error("snd_config_compound_add: %s", snd_strerror(err));
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return err;
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}
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switch (type) {
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case SND_CTL_ELEM_TYPE_BOOLEAN:
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for (idx = 0; idx < count; idx++) {
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err = snd_config_string_add(value, num_str(idx), snd_ctl_elem_value_get_boolean(ctl, idx) ? "true" : "false");
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if (err < 0) {
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error("snd_config_string_add: %s", snd_strerror(err));
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return err;
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}
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}
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break;
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case SND_CTL_ELEM_TYPE_INTEGER:
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for (idx = 0; idx < count; idx++) {
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err = snd_config_integer_add(value, num_str(idx), snd_ctl_elem_value_get_integer(ctl, idx));
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if (err < 0) {
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error("snd_config_integer_add: %s", snd_strerror(err));
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return err;
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}
|
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}
|
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break;
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case SND_CTL_ELEM_TYPE_INTEGER64:
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for (idx = 0; idx < count; idx++) {
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err = snd_config_integer64_add(value, num_str(idx), snd_ctl_elem_value_get_integer64(ctl, idx));
|
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if (err < 0) {
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error("snd_config_integer64_add: %s", snd_strerror(err));
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return err;
|
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}
|
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}
|
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break;
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case SND_CTL_ELEM_TYPE_ENUMERATED:
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for (idx = 0; idx < count; idx++) {
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unsigned int v = snd_ctl_elem_value_get_enumerated(ctl, idx);
|
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snd_config_t *c;
|
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err = snd_config_search(item, num_str(v), &c);
|
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if (err == 0) {
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err = snd_config_get_string(c, &s);
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assert(err == 0);
|
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err = snd_config_string_add(value, num_str(idx), s);
|
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} else {
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err = snd_config_integer_add(value, num_str(idx), v);
|
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}
|
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if (err < 0) {
|
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error("snd_config add: %s", snd_strerror(err));
|
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return err;
|
|
}
|
|
}
|
|
break;
|
|
default:
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error("Unknown control type: %d\n", type);
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return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_controls(int cardno, snd_config_t *top)
|
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{
|
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snd_ctl_t *handle;
|
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snd_ctl_card_info_t *info;
|
|
snd_config_t *state, *card, *control;
|
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snd_ctl_elem_list_t *list;
|
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unsigned int idx;
|
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int err;
|
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char name[32];
|
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unsigned int count;
|
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const char *id;
|
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snd_ctl_card_info_alloca(&info);
|
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snd_ctl_elem_list_alloca(&list);
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|
|
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sprintf(name, "hw:%d", cardno);
|
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err = snd_ctl_open(&handle, name, SND_CTL_READONLY);
|
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if (err < 0) {
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error("snd_ctl_open error: %s", snd_strerror(err));
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return err;
|
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}
|
|
err = snd_ctl_card_info(handle, info);
|
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if (err < 0) {
|
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error("snd_ctl_card_info error: %s", snd_strerror(err));
|
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goto _close;
|
|
}
|
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id = snd_ctl_card_info_get_id(info);
|
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err = snd_config_search(top, "state", &state);
|
|
if (err == 0 &&
|
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snd_config_get_type(state) != SND_CONFIG_TYPE_COMPOUND) {
|
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error("config state node is not a compound");
|
|
err = -EINVAL;
|
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goto _close;
|
|
}
|
|
if (err < 0) {
|
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err = snd_config_compound_add(top, "state", 1, &state);
|
|
if (err < 0) {
|
|
error("snd_config_compound_add: %s", snd_strerror(err));
|
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goto _close;
|
|
}
|
|
}
|
|
err = snd_config_search(state, id, &card);
|
|
if (err == 0 &&
|
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snd_config_get_type(card) != SND_CONFIG_TYPE_COMPOUND) {
|
|
error("config state.%s node is not a compound", id);
|
|
err = -EINVAL;
|
|
goto _close;
|
|
}
|
|
if (err < 0) {
|
|
err = snd_config_compound_add(state, id, 0, &card);
|
|
if (err < 0) {
|
|
error("snd_config_compound_add: %s", snd_strerror(err));
|
|
goto _close;
|
|
}
|
|
}
|
|
err = snd_config_search(card, "control", &control);
|
|
if (err == 0) {
|
|
err = snd_config_delete(control);
|
|
if (err < 0) {
|
|
error("snd_config_delete: %s", snd_strerror(err));
|
|
goto _close;
|
|
}
|
|
}
|
|
err = snd_ctl_elem_list(handle, list);
|
|
if (err < 0) {
|
|
error("Cannot determine controls: %s", snd_strerror(err));
|
|
goto _close;
|
|
}
|
|
count = snd_ctl_elem_list_get_count(list);
|
|
if (count < 0) {
|
|
err = 0;
|
|
goto _close;
|
|
}
|
|
err = snd_config_compound_add(card, "control", count > 0, &control);
|
|
if (err < 0) {
|
|
error("snd_config_compound_add: %s", snd_strerror(err));
|
|
goto _close;
|
|
}
|
|
if (count == 0) {
|
|
err = 0;
|
|
goto _close;
|
|
}
|
|
snd_ctl_elem_list_set_offset(list, 0);
|
|
if (snd_ctl_elem_list_alloc_space(list, count) < 0) {
|
|
error("No enough memory...");
|
|
goto _close;
|
|
}
|
|
if ((err = snd_ctl_elem_list(handle, list)) < 0) {
|
|
error("Cannot determine controls (2): %s", snd_strerror(err));
|
|
goto _free;
|
|
}
|
|
for (idx = 0; idx < count; ++idx) {
|
|
snd_ctl_elem_id_t *id;
|
|
snd_ctl_elem_id_alloca(&id);
|
|
snd_ctl_elem_list_get_id(list, idx, id);
|
|
err = get_control(handle, id, control);
|
|
if (err < 0)
|
|
goto _free;
|
|
}
|
|
|
|
err = 0;
|
|
_free:
|
|
snd_ctl_elem_list_free_space(list);
|
|
_close:
|
|
snd_ctl_close(handle);
|
|
return err;
|
|
}
|
|
|
|
static long config_iface(snd_config_t *n)
|
|
{
|
|
long i;
|
|
long long li;
|
|
snd_ctl_elem_iface_t idx;
|
|
const char *str;
|
|
switch (snd_config_get_type(n)) {
|
|
case SND_CONFIG_TYPE_INTEGER:
|
|
snd_config_get_integer(n, &i);
|
|
return i;
|
|
case SND_CONFIG_TYPE_INTEGER64:
|
|
snd_config_get_integer64(n, &li);
|
|
return li;
|
|
case SND_CONFIG_TYPE_STRING:
|
|
snd_config_get_string(n, &str);
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
for (idx = 0; idx <= SND_CTL_ELEM_IFACE_LAST; idx++) {
|
|
if (strcasecmp(snd_ctl_elem_iface_name(idx), str) == 0)
|
|
return idx;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int config_bool(snd_config_t *n)
|
|
{
|
|
const char *str;
|
|
long val;
|
|
long long lval;
|
|
switch (snd_config_get_type(n)) {
|
|
case SND_CONFIG_TYPE_INTEGER:
|
|
snd_config_get_integer(n, &val);
|
|
if (val < 0 || val > 1)
|
|
return -1;
|
|
return val;
|
|
case SND_CONFIG_TYPE_INTEGER64:
|
|
snd_config_get_integer64(n, &lval);
|
|
if (lval < 0 || lval > 1)
|
|
return -1;
|
|
return (int) lval;
|
|
case SND_CONFIG_TYPE_STRING:
|
|
snd_config_get_string(n, &str);
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
if (strcmp(str, "on") == 0 || strcmp(str, "true") == 0)
|
|
return 1;
|
|
if (strcmp(str, "off") == 0 || strcmp(str, "false") == 0)
|
|
return 0;
|
|
return -1;
|
|
}
|
|
|
|
static int config_enumerated(snd_config_t *n, snd_ctl_t *handle,
|
|
snd_ctl_elem_info_t *info)
|
|
{
|
|
const char *str;
|
|
long val;
|
|
long long lval;
|
|
unsigned int idx, items;
|
|
switch (snd_config_get_type(n)) {
|
|
case SND_CONFIG_TYPE_INTEGER:
|
|
snd_config_get_integer(n, &val);
|
|
return val;
|
|
case SND_CONFIG_TYPE_INTEGER64:
|
|
snd_config_get_integer64(n, &lval);
|
|
return (int) lval;
|
|
case SND_CONFIG_TYPE_STRING:
|
|
snd_config_get_string(n, &str);
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
items = snd_ctl_elem_info_get_items(info);
|
|
for (idx = 0; idx < items; idx++) {
|
|
int err;
|
|
snd_ctl_elem_info_set_item(info, idx);
|
|
err = snd_ctl_elem_info(handle, info);
|
|
if (err < 0) {
|
|
error("snd_ctl_elem_info: %s", snd_strerror(err));
|
|
return err;
|
|
}
|
|
if (strcmp(str, snd_ctl_elem_info_get_item_name(info)) == 0)
|
|
return idx;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int is_user_control(snd_config_t *conf)
|
|
{
|
|
snd_config_iterator_t i, next;
|
|
|
|
snd_config_for_each(i, next, conf) {
|
|
snd_config_t *n = snd_config_iterator_entry(i);
|
|
const char *id, *s;
|
|
if (snd_config_get_id(n, &id) < 0)
|
|
continue;
|
|
if (strcmp(id, "access") == 0) {
|
|
if (snd_config_get_string(n, &s) < 0)
|
|
return 0;
|
|
if (strstr(s, "user"))
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int add_user_control(snd_ctl_t *handle, snd_ctl_elem_info_t *info, snd_config_t *conf)
|
|
{
|
|
snd_ctl_elem_id_t *id;
|
|
snd_config_iterator_t i, next;
|
|
long imin, imax, istep;
|
|
snd_ctl_elem_type_t ctype;
|
|
unsigned int count;
|
|
int err;
|
|
|
|
imin = imax = istep = 0;
|
|
count = 0;
|
|
ctype = SND_CTL_ELEM_TYPE_NONE;
|
|
snd_config_for_each(i, next, conf) {
|
|
snd_config_t *n = snd_config_iterator_entry(i);
|
|
const char *id, *type;
|
|
if (snd_config_get_id(n, &id) < 0)
|
|
continue;
|
|
if (strcmp(id, "type") == 0) {
|
|
if ((err = snd_config_get_string(n, &type)) < 0)
|
|
return -EINVAL;
|
|
if (strcmp(type, "BOOLEAN") == 0)
|
|
ctype = SND_CTL_ELEM_TYPE_BOOLEAN;
|
|
else if (strcmp(type, "INTEGER") == 0)
|
|
ctype = SND_CTL_ELEM_TYPE_INTEGER;
|
|
else if (strcmp(type, "IEC958") == 0)
|
|
ctype = SND_CTL_ELEM_TYPE_IEC958;
|
|
else
|
|
return -EINVAL;
|
|
continue;
|
|
}
|
|
if (strcmp(id, "range") == 0) {
|
|
const char *s;
|
|
if ((err = snd_config_get_string(n, &s)) < 0)
|
|
return -EINVAL;
|
|
switch (ctype) {
|
|
case SND_CTL_ELEM_TYPE_INTEGER:
|
|
err = sscanf(s, "%li - %li (step %li)", &imin, &imax, &istep);
|
|
if (err != 3) {
|
|
istep = 0;
|
|
err = sscanf(s, "%li - %li", &imin, &imax);
|
|
if (err != 2)
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
continue;
|
|
}
|
|
if (strcmp(id, "count") == 0) {
|
|
long v;
|
|
if ((err = snd_config_get_integer(n, &v)) < 0)
|
|
return err;
|
|
count = v;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
snd_ctl_elem_id_alloca(&id);
|
|
snd_ctl_elem_info_get_id(info, id);
|
|
if (count <= 0)
|
|
count = 1;
|
|
switch (ctype) {
|
|
case SND_CTL_ELEM_TYPE_INTEGER:
|
|
if (imin > imax || istep > imax - imin)
|
|
return -EINVAL;
|
|
err = snd_ctl_elem_add_integer(handle, id, count, imin, imax, istep);
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_BOOLEAN:
|
|
err = snd_ctl_elem_add_boolean(handle, id, count);
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_IEC958:
|
|
err = snd_ctl_elem_add_iec958(handle, id);
|
|
break;
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (err < 0)
|
|
return err;
|
|
return snd_ctl_elem_info(handle, info);
|
|
}
|
|
|
|
static int set_control(snd_ctl_t *handle, snd_config_t *control)
|
|
{
|
|
snd_ctl_elem_value_t *ctl;
|
|
snd_ctl_elem_info_t *info;
|
|
snd_config_iterator_t i, next;
|
|
unsigned int numid1;
|
|
snd_ctl_elem_iface_t iface = -1;
|
|
int iface1;
|
|
const char *name1;
|
|
unsigned int numid;
|
|
snd_ctl_elem_type_t type;
|
|
unsigned int count;
|
|
long device = -1;
|
|
long device1;
|
|
long subdevice = -1;
|
|
long subdevice1;
|
|
const char *name = NULL;
|
|
long index1;
|
|
long index = -1;
|
|
snd_config_t *value = NULL;
|
|
snd_config_t *comment = NULL;
|
|
long val;
|
|
long long lval;
|
|
unsigned int idx;
|
|
int err;
|
|
char *set;
|
|
const char *id;
|
|
snd_ctl_elem_value_alloca(&ctl);
|
|
snd_ctl_elem_info_alloca(&info);
|
|
if (snd_config_get_type(control) != SND_CONFIG_TYPE_COMPOUND) {
|
|
error("control is not a compound");
|
|
return -EINVAL;
|
|
}
|
|
err = snd_config_get_id(control, &id);
|
|
if (err < 0) {
|
|
error("unable to get id");
|
|
return -EINVAL;
|
|
}
|
|
numid = atoi(id);
|
|
snd_config_for_each(i, next, control) {
|
|
snd_config_t *n = snd_config_iterator_entry(i);
|
|
const char *fld;
|
|
if (snd_config_get_id(n, &fld) < 0)
|
|
continue;
|
|
if (strcmp(fld, "comment") == 0) {
|
|
if (snd_config_get_type(n) != SND_CONFIG_TYPE_COMPOUND) {
|
|
error("control.%d.%s is invalid", numid, fld);
|
|
return -EINVAL;
|
|
}
|
|
comment = n;
|
|
continue;
|
|
}
|
|
if (strcmp(fld, "iface") == 0) {
|
|
iface = (snd_ctl_elem_iface_t)config_iface(n);
|
|
if (iface < 0) {
|
|
error("control.%d.%s is invalid", numid, fld);
|
|
return -EINVAL;
|
|
}
|
|
continue;
|
|
}
|
|
if (strcmp(fld, "device") == 0) {
|
|
if (snd_config_get_type(n) != SND_CONFIG_TYPE_INTEGER) {
|
|
error("control.%d.%s is invalid", numid, fld);
|
|
return -EINVAL;
|
|
}
|
|
snd_config_get_integer(n, &device);
|
|
continue;
|
|
}
|
|
if (strcmp(fld, "subdevice") == 0) {
|
|
if (snd_config_get_type(n) != SND_CONFIG_TYPE_INTEGER) {
|
|
error("control.%d.%s is invalid", numid, fld);
|
|
return -EINVAL;
|
|
}
|
|
snd_config_get_integer(n, &subdevice);
|
|
continue;
|
|
}
|
|
if (strcmp(fld, "name") == 0) {
|
|
if (snd_config_get_type(n) != SND_CONFIG_TYPE_STRING) {
|
|
error("control.%d.%s is invalid", numid, fld);
|
|
return -EINVAL;
|
|
}
|
|
snd_config_get_string(n, &name);
|
|
continue;
|
|
}
|
|
if (strcmp(fld, "index") == 0) {
|
|
if (snd_config_get_type(n) != SND_CONFIG_TYPE_INTEGER) {
|
|
error("control.%d.%s is invalid", numid, fld);
|
|
return -EINVAL;
|
|
}
|
|
snd_config_get_integer(n, &index);
|
|
continue;
|
|
}
|
|
if (strcmp(fld, "value") == 0) {
|
|
value = n;
|
|
continue;
|
|
}
|
|
error("unknown control.%d.%s field", numid, fld);
|
|
}
|
|
if (!value) {
|
|
error("missing control.%d.value", numid);
|
|
return -EINVAL;
|
|
}
|
|
if (device < 0)
|
|
device = 0;
|
|
if (subdevice < 0)
|
|
subdevice = 0;
|
|
if (index < 0)
|
|
index = 0;
|
|
|
|
err = -EINVAL;
|
|
if (! force_restore) {
|
|
snd_ctl_elem_info_set_numid(info, numid);
|
|
err = snd_ctl_elem_info(handle, info);
|
|
}
|
|
if (err < 0) {
|
|
if (iface >= 0 && name) {
|
|
snd_ctl_elem_info_set_numid(info, 0);
|
|
snd_ctl_elem_info_set_interface(info, iface);
|
|
snd_ctl_elem_info_set_device(info, device);
|
|
snd_ctl_elem_info_set_subdevice(info, subdevice);
|
|
snd_ctl_elem_info_set_name(info, name);
|
|
snd_ctl_elem_info_set_index(info, index);
|
|
err = snd_ctl_elem_info(handle, info);
|
|
if (err < 0 && comment && is_user_control(comment)) {
|
|
err = add_user_control(handle, info, comment);
|
|
if (err < 0) {
|
|
error("failed to add user control #%d (%s)",
|
|
numid, snd_strerror(err));
|
|
return err;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (err < 0) {
|
|
error("failed to obtain info for control #%d (%s)", numid, snd_strerror(err));
|
|
return -ENOENT;
|
|
}
|
|
numid1 = snd_ctl_elem_info_get_numid(info);
|
|
iface1 = snd_ctl_elem_info_get_interface(info);
|
|
device1 = snd_ctl_elem_info_get_device(info);
|
|
subdevice1 = snd_ctl_elem_info_get_subdevice(info);
|
|
name1 = snd_ctl_elem_info_get_name(info);
|
|
index1 = snd_ctl_elem_info_get_index(info);
|
|
count = snd_ctl_elem_info_get_count(info);
|
|
type = snd_ctl_elem_info_get_type(info);
|
|
if (err |= numid != numid1 && ! force_restore)
|
|
error("warning: numid mismatch (%d/%d) for control #%d",
|
|
numid, numid1, numid);
|
|
if (err |= iface != iface1)
|
|
error("warning: iface mismatch (%d/%d) for control #%d", iface, iface1, numid);
|
|
if (err |= device != device1)
|
|
error("warning: device mismatch (%ld/%ld) for control #%d", device, device1, numid);
|
|
if (err |= subdevice != subdevice1)
|
|
error("warning: subdevice mismatch (%ld/%ld) for control #%d", subdevice, subdevice1, numid);
|
|
if (err |= strcmp(name, name1))
|
|
error("warning: name mismatch (%s/%s) for control #%d", name, name1, numid);
|
|
if (err |= index != index1)
|
|
error("warning: index mismatch (%ld/%ld) for control #%d", index, index1, numid);
|
|
if (err < 0) {
|
|
error("failed to obtain info for control #%d (%s)", numid, snd_strerror(err));
|
|
return -ENOENT;
|
|
}
|
|
|
|
#if 0
|
|
if (comment) {
|
|
check_comment_type(comment, type);
|
|
if (type == SND_CTL_ELEM_TYPE_INTEGER ||
|
|
type == SND_CTL_ELEM_TYPE_INTEGER64)
|
|
check_comment_range(comment, info);
|
|
}
|
|
#endif
|
|
|
|
if (!snd_ctl_elem_info_is_writable(info))
|
|
return 0;
|
|
snd_ctl_elem_value_set_numid(ctl, numid1);
|
|
|
|
if (count == 1) {
|
|
switch (type) {
|
|
case SND_CTL_ELEM_TYPE_BOOLEAN:
|
|
val = config_bool(value);
|
|
if (val >= 0) {
|
|
snd_ctl_elem_value_set_boolean(ctl, 0, val);
|
|
goto _ok;
|
|
}
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_INTEGER:
|
|
err = snd_config_get_integer(value, &val);
|
|
if (err == 0) {
|
|
snd_ctl_elem_value_set_integer(ctl, 0, val);
|
|
goto _ok;
|
|
}
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_INTEGER64:
|
|
err = snd_config_get_integer64(value, &lval);
|
|
if (err == 0) {
|
|
snd_ctl_elem_value_set_integer64(ctl, 0, lval);
|
|
goto _ok;
|
|
}
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_ENUMERATED:
|
|
val = config_enumerated(value, handle, info);
|
|
if (val >= 0) {
|
|
snd_ctl_elem_value_set_enumerated(ctl, 0, val);
|
|
goto _ok;
|
|
}
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_BYTES:
|
|
case SND_CTL_ELEM_TYPE_IEC958:
|
|
break;
|
|
default:
|
|
error("Unknow control type: %d", type);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
switch (type) {
|
|
case SND_CTL_ELEM_TYPE_BYTES:
|
|
case SND_CTL_ELEM_TYPE_IEC958:
|
|
{
|
|
const char *buf;
|
|
err = snd_config_get_string(value, &buf);
|
|
if (err >= 0) {
|
|
int c1 = 0;
|
|
int len = strlen(buf);
|
|
unsigned int idx = 0;
|
|
int size = type == SND_CTL_ELEM_TYPE_BYTES ?
|
|
count : sizeof(snd_aes_iec958_t);
|
|
if (size * 2 != len) {
|
|
error("bad control.%d.value contents\n", numid);
|
|
return -EINVAL;
|
|
}
|
|
while (*buf) {
|
|
int c = *buf++;
|
|
if (c >= '0' && c <= '9')
|
|
c -= '0';
|
|
else if (c >= 'a' && c <= 'f')
|
|
c = c - 'a' + 10;
|
|
else if (c >= 'A' && c <= 'F')
|
|
c = c - 'A' + 10;
|
|
else {
|
|
error("bad control.%d.value contents\n", numid);
|
|
return -EINVAL;
|
|
}
|
|
if (idx % 2 == 1)
|
|
snd_ctl_elem_value_set_byte(ctl, idx / 2, c1 << 4 | c);
|
|
else
|
|
c1 = c;
|
|
idx++;
|
|
}
|
|
goto _ok;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
if (snd_config_get_type(value) != SND_CONFIG_TYPE_COMPOUND) {
|
|
error("bad control.%d.value type", numid);
|
|
return -EINVAL;
|
|
}
|
|
|
|
set = (char*) alloca(count);
|
|
memset(set, 0, count);
|
|
snd_config_for_each(i, next, value) {
|
|
snd_config_t *n = snd_config_iterator_entry(i);
|
|
const char *id;
|
|
if (snd_config_get_id(n, &id) < 0)
|
|
continue;
|
|
idx = atoi(id);
|
|
if (idx < 0 || idx >= count ||
|
|
set[idx]) {
|
|
error("bad control.%d.value index", numid);
|
|
return -EINVAL;
|
|
}
|
|
switch (type) {
|
|
case SND_CTL_ELEM_TYPE_BOOLEAN:
|
|
val = config_bool(n);
|
|
if (val < 0) {
|
|
error("bad control.%d.value.%d content", numid, idx);
|
|
return -EINVAL;
|
|
}
|
|
snd_ctl_elem_value_set_boolean(ctl, idx, val);
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_INTEGER:
|
|
err = snd_config_get_integer(n, &val);
|
|
if (err < 0) {
|
|
error("bad control.%d.value.%d content", numid, idx);
|
|
return -EINVAL;
|
|
}
|
|
snd_ctl_elem_value_set_integer(ctl, idx, val);
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_INTEGER64:
|
|
err = snd_config_get_integer64(n, &lval);
|
|
if (err < 0) {
|
|
error("bad control.%d.value.%d content", numid, idx);
|
|
return -EINVAL;
|
|
}
|
|
snd_ctl_elem_value_set_integer64(ctl, idx, lval);
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_ENUMERATED:
|
|
val = config_enumerated(n, handle, info);
|
|
if (val < 0) {
|
|
error("bad control.%d.value.%d content", numid, idx);
|
|
return -EINVAL;
|
|
}
|
|
snd_ctl_elem_value_set_enumerated(ctl, idx, val);
|
|
break;
|
|
case SND_CTL_ELEM_TYPE_BYTES:
|
|
case SND_CTL_ELEM_TYPE_IEC958:
|
|
err = snd_config_get_integer(n, &val);
|
|
if (err < 0 || val < 0 || val > 255) {
|
|
error("bad control.%d.value.%d content", numid, idx);
|
|
return -EINVAL;
|
|
}
|
|
snd_ctl_elem_value_set_byte(ctl, idx, val);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
set[idx] = 1;
|
|
}
|
|
for (idx = 0; idx < count; ++idx) {
|
|
if (!set[idx]) {
|
|
error("control.%d.value.%d is not specified", numid, idx);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
_ok:
|
|
err = snd_ctl_elem_write(handle, ctl);
|
|
if (err < 0) {
|
|
error("Cannot write control '%d:%ld:%ld:%s:%ld' : %s", (int)iface, device, subdevice, name, index, snd_strerror(err));
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int set_controls(int card, snd_config_t *top)
|
|
{
|
|
snd_ctl_t *handle;
|
|
snd_ctl_card_info_t *info;
|
|
snd_config_t *control;
|
|
snd_config_iterator_t i, next;
|
|
int err;
|
|
char name[32], tmpid[16];
|
|
const char *id;
|
|
snd_ctl_card_info_alloca(&info);
|
|
|
|
sprintf(name, "hw:%d", card);
|
|
err = snd_ctl_open(&handle, name, 0);
|
|
if (err < 0) {
|
|
error("snd_ctl_open error: %s", snd_strerror(err));
|
|
return err;
|
|
}
|
|
err = snd_ctl_card_info(handle, info);
|
|
if (err < 0) {
|
|
error("snd_ctl_card_info error: %s", snd_strerror(err));
|
|
goto _close;
|
|
}
|
|
id = snd_ctl_card_info_get_id(info);
|
|
err = snd_config_searchv(top, &control, "state", id, "control", 0);
|
|
if (err < 0) {
|
|
if (force_restore) {
|
|
sprintf(tmpid, "card%d", card);
|
|
err = snd_config_searchv(top, &control, "state", tmpid, "control", 0);
|
|
if (! err)
|
|
id = tmpid;
|
|
}
|
|
if (err < 0) {
|
|
err = 0;
|
|
fprintf(stderr, "No state is present for card %s\n", id);
|
|
goto _close;
|
|
}
|
|
id = tmpid;
|
|
}
|
|
if (snd_config_get_type(control) != SND_CONFIG_TYPE_COMPOUND) {
|
|
error("state.%s.control is not a compound\n", id);
|
|
return -EINVAL;
|
|
}
|
|
snd_config_for_each(i, next, control) {
|
|
snd_config_t *n = snd_config_iterator_entry(i);
|
|
err = set_control(handle, n);
|
|
if (err < 0 && ! force_restore)
|
|
goto _close;
|
|
}
|
|
|
|
_close:
|
|
snd_ctl_close(handle);
|
|
return err;
|
|
}
|
|
|
|
int save_state(const char *file, const char *cardname)
|
|
{
|
|
int err;
|
|
snd_config_t *config;
|
|
snd_input_t *in;
|
|
snd_output_t *out;
|
|
int stdio;
|
|
|
|
err = snd_config_top(&config);
|
|
if (err < 0) {
|
|
error("snd_config_top error: %s", snd_strerror(err));
|
|
return err;
|
|
}
|
|
stdio = !strcmp(file, "-");
|
|
if (!stdio && (err = snd_input_stdio_open(&in, file, "r")) >= 0) {
|
|
err = snd_config_load(config, in);
|
|
snd_input_close(in);
|
|
#if 0
|
|
if (err < 0) {
|
|
error("snd_config_load error: %s", snd_strerror(err));
|
|
return err;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (!cardname) {
|
|
int card, first = 1;
|
|
|
|
card = -1;
|
|
/* find each installed soundcards */
|
|
while (1) {
|
|
if (snd_card_next(&card) < 0)
|
|
break;
|
|
if (card < 0) {
|
|
if (first) {
|
|
error("No soundcards found...");
|
|
return -ENODEV;
|
|
}
|
|
break;
|
|
}
|
|
first = 0;
|
|
if ((err = get_controls(card, config)))
|
|
return err;
|
|
}
|
|
} else {
|
|
int cardno;
|
|
|
|
cardno = snd_card_get_index(cardname);
|
|
if (cardno < 0) {
|
|
error("Cannot find soundcard '%s'...", cardname);
|
|
return cardno;
|
|
}
|
|
if ((err = get_controls(cardno, config))) {
|
|
return err;
|
|
}
|
|
}
|
|
|
|
if (stdio)
|
|
err = snd_output_stdio_attach(&out, stdout, 0);
|
|
else
|
|
err = snd_output_stdio_open(&out, file, "w");
|
|
if (err < 0) {
|
|
error("Cannot open %s for writing", file);
|
|
return -errno;
|
|
}
|
|
err = snd_config_save(config, out);
|
|
snd_output_close(out);
|
|
if (err < 0)
|
|
error("snd_config_save: %s", snd_strerror(err));
|
|
return 0;
|
|
}
|
|
|
|
int load_state(const char *file, const char *cardname)
|
|
{
|
|
int err;
|
|
snd_config_t *config;
|
|
snd_input_t *in;
|
|
int stdio;
|
|
|
|
err = snd_config_top(&config);
|
|
if (err < 0) {
|
|
error("snd_config_top error: %s", snd_strerror(err));
|
|
return err;
|
|
}
|
|
stdio = !strcmp(file, "-");
|
|
if (stdio)
|
|
err = snd_input_stdio_attach(&in, stdin, 0);
|
|
else
|
|
err = snd_input_stdio_open(&in, file, "r");
|
|
if (err >= 0) {
|
|
err = snd_config_load(config, in);
|
|
snd_input_close(in);
|
|
if (err < 0) {
|
|
error("snd_config_load error: %s", snd_strerror(err));
|
|
return err;
|
|
}
|
|
}
|
|
|
|
if (!cardname) {
|
|
int card, first = 1;
|
|
|
|
card = -1;
|
|
/* find each installed soundcards */
|
|
while (1) {
|
|
if (snd_card_next(&card) < 0)
|
|
break;
|
|
if (card < 0) {
|
|
if (first) {
|
|
error("No soundcards found...");
|
|
return -ENODEV;
|
|
}
|
|
break;
|
|
}
|
|
first = 0;
|
|
if ((err = set_controls(card, config)) && ! force_restore)
|
|
return err;
|
|
}
|
|
} else {
|
|
int cardno;
|
|
|
|
cardno = snd_card_get_index(cardname);
|
|
if (cardno < 0) {
|
|
error("Cannot find soundcard '%s'...", cardname);
|
|
return -ENODEV;
|
|
}
|
|
if ((err = set_controls(cardno, config)) && ! force_restore) {
|
|
return err;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|