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Added snd_card_type_string_to_enum and snd_card_type_enum_to_string functions.

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- the /usr/share/alsa/cards.conf file contains the translation table
Added snd_sctl_build and snd_sctl_free functions.
Recoded the surround plugin to use the surround.conf file.
 - the /usr/share/alsa/surround.conf file contains the surround configuration
This commit is contained in:
Jaroslav Kysela 2001-05-10 08:32:40 +00:00
parent a5ddd2f21f
commit 232d703c23
10 changed files with 780 additions and 340 deletions
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154
src/control/cards_id.c Normal file
View file

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/*
* Control Interface - card ID conversions
* Copyright (c) 1998 by Jaroslav Kysela <perex@suse.cz>
*
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include "control_local.h"
#ifndef DATADIR
#define DATADIR "/usr/share"
#endif
#define ALSA_CARDS_FILE DATADIR "/alsa/cards.conf"
static int build_config(snd_config_t **r_conf)
{
int err;
snd_input_t *in;
snd_config_t *conf, *file;
const char *filename = ALSA_CARDS_FILE;
assert(r_conf);
*r_conf = NULL;
if ((err = snd_config_update()) < 0)
return err;
if ((err = snd_config_search(snd_config, "cards_file", &file)) >= 0) {
if ((err = snd_config_get_string(file, &filename)) < 0) {
SNDERR("cards_file definition must be string");
filename = ALSA_CARDS_FILE;
}
}
if ((err = snd_input_stdio_open(&in, filename, "r")) < 0) {
SNDERR("unable to open configuration file '%s'", filename);
return err;
}
if ((err = snd_config_top(&conf)) < 0) {
SNDERR("config_top");
snd_input_close(in);
return err;
}
if ((err = snd_config_load(conf, in)) < 0) {
SNDERR("config load error");
snd_config_delete(conf);
snd_input_close(in);
return err;
}
snd_input_close(in);
*r_conf = conf;
return 0;
}
int snd_card_type_string_to_enum(const char *strid, snd_card_type_t *enumid)
{
int err;
snd_config_t *conf = NULL, *card;
snd_config_iterator_t i, next;
assert(enumid);
*enumid = SND_CARD_TYPE_GUS_CLASSIC;
if ((err = build_config(&conf)) < 0)
return err;
if ((err = snd_config_search(conf, "card", &card)) < 0) {
SNDERR("unable to find card definitions");
snd_config_delete(conf);
return err;
}
if (snd_config_get_type(card) != SND_CONFIG_TYPE_COMPOUND) {
SNDERR("compound type expected");
snd_config_delete(conf);
return err;
}
snd_config_for_each(i, next, card) {
snd_config_t *n = snd_config_iterator_entry(i);
const char *id = snd_config_get_id(n);
unsigned long i;
if (snd_config_get_type(n) != SND_CONFIG_TYPE_INTEGER) {
SNDERR("entry '%s' is invalid", id);
continue;
}
if ((err = snd_config_get_integer(n, &i)) < 0) {
SNDERR("entry '%s' is invalid", id);
continue;
}
if (!strcmp(id, strid)) {
*enumid = i;
return 0;
}
}
snd_config_delete(conf);
return -ENOENT;
}
int snd_card_type_enum_to_string(snd_card_type_t enumid, char **strid)
{
int err;
snd_config_t *conf = NULL, *card;
snd_config_iterator_t i, next;
assert(strid);
*strid = NULL;
if ((err = build_config(&conf)) < 0)
return err;
if ((err = snd_config_search(conf, "card", &card)) < 0) {
SNDERR("unable to find card definitions");
snd_config_delete(conf);
return err;
}
if (snd_config_get_type(card) != SND_CONFIG_TYPE_COMPOUND) {
SNDERR("compound type expected");
snd_config_delete(conf);
return err;
}
snd_config_for_each(i, next, card) {
snd_config_t *n = snd_config_iterator_entry(i);
const char *id = snd_config_get_id(n);
unsigned long i;
if (snd_config_get_type(n) != SND_CONFIG_TYPE_INTEGER) {
SNDERR("entry '%s' is invalid", id);
continue;
}
if ((err = snd_config_get_integer(n, &i)) < 0) {
SNDERR("entry '%s' is invalid", id);
continue;
}
if ((unsigned long)enumid == i) {
*strid = id ? strdup(id) : NULL;
snd_config_delete(conf);
return 0;
}
}
snd_config_delete(conf);
return -ENOENT;
}