mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-11-09 17:15:43 +01:00
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/*
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* Advanced Linux Sound Architecture Control Program - UCM Initialization
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* Copyright (c) by Jaroslav Kysela <perex@perex.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stddef.h>
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#include "alsactl.h"
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#include <alsa/use-case.h>
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/*
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* Keep it as simple as possible. Execute commands from the SectionOnce only.
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*/
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int init_ucm(int flags, int cardno)
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{
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snd_use_case_mgr_t *uc_mgr;
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char id[32];
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int err;
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snprintf(id, sizeof(id), "hw:%d", cardno);
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err = snd_use_case_mgr_open(&uc_mgr, id);
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if (err < 0)
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return err;
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err = snd_use_case_set(uc_mgr, "_once", NULL);
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if (err < 0)
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goto _error;
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if ((flags & FLAG_UCM_DEFAULTS) != 0) {
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err = snd_use_case_set(uc_mgr, "_defaults", NULL);
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if (err < 0)
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goto _error;
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}
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_error:
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snd_use_case_mgr_close(uc_mgr);
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return err;
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}
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