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/* tinymix.c
**
** Copyright 2011, The Android Open Source Project
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of The Android Open Source Project nor the names of
** its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
** DAMAGE.
*/
#include <tinyalsa/asoundlib.h>
#include <stdio.h>
int main(int argc, char **argv)
{
struct mixer *mixer;
struct mixer_ctl *ctl;
const char *type;
unsigned int num_ctls, num_values;
char buffer[256];
unsigned int i;
mixer = mixer_open(0);
num_ctls = mixer_get_num_ctls(mixer);
printf("Number of controls: %d\n", num_ctls);
printf("ctl\ttype\tnum\tname\n");
for (i = 0; i < num_ctls; i++) {
ctl = mixer_get_ctl(mixer, i);
mixer_ctl_get_name(ctl, buffer, sizeof(buffer));
type = mixer_ctl_get_type_string(ctl);
num_values = mixer_ctl_get_num_values(ctl);
printf("%d\t%s\t%d\t%s\n", i, type, num_values, buffer);
}
mixer_close(mixer);
return 0;
}
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