47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
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/* Copyright 2005 Red Hat, Inc.
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*
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* This software may be freely redistributed under the terms of the GNU
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* public license.
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <alsa/asoundlib.h>
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int get_card_device(const char *p_device)
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{
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int err;
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snd_ctl_t *handle;
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snd_ctl_card_info_t *info;
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snd_ctl_card_info_alloca(&info);
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if ((err = snd_ctl_open(&handle, "default", 0)) < 0) {
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fprintf(stderr,"Open error: %s\n", snd_strerror(err));
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return(0);
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}
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if ((err = snd_ctl_card_info(handle, info)) < 0) {
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fprintf(stderr,"HW info error: %s\n", snd_strerror(err));
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return(0);
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}
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return (snd_ctl_card_info_get_card(info));
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}
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int main(int argc, char *argv[])
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{
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char *p_device = "default";
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int card;
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if (argc > 1 && argv[1])
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p_device = argv[1];
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card = get_card_device(p_device);
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printf("%d",card);
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return (card);
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}
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