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/*
* This is an example of a mixer program for Linux
*
* updated 1/1/93 to add stereo, level query, broken
* devmask kludge - cmetz@thor.tjhsst.edu
*
* (C) Craig Metz and Hannu Savolainen 1993.
*
* You may do anything you wish with this program.
*
* ditto for my modifications (John-Mark Gurney, 1997)
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/soundcard.h>
char *names[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
void usage(int devmask, int recmask);
int res_name(const char *name, int mask);
void print_recsrc(int recsrc);
void
usage(int devmask, int recmask)
{
int i, n;
printf("usage: mixer [[dev [voll[:volr]] | recsrc | {^|+|-|=}rec recdev] ... ]\n");
printf(" devices: ");
for (i = 0, n = 0; i < SOUND_MIXER_NRDEVICES; i++)
if ((1 << i) & devmask) {
if (n)
printf(", ");
printf(names[i]);
n = 1;
}
printf("\n rec devices: ");
for (i = 0, n = 0; i < SOUND_MIXER_NRDEVICES; i++)
if ((1 << i) & recmask) {
if (n)
printf(", ");
printf(names[i]);
n = 1;
}
printf("\n");
exit(1);
}
int
res_name(const char *name, int mask)
{
int foo;
for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++)
if ((1 << foo) & mask && !strcmp(names[foo], name))
break;
return foo == SOUND_MIXER_NRDEVICES ? -1 : foo;
}
void
print_recsrc(int recsrc)
{
int i, n = 0;
fprintf(stderr, "Recording source: ");
for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
if ((1 << i) & recsrc) {
if (n)
fprintf(stderr, ", ");
fprintf(stderr, names[i]);
n = 1;
}
fprintf(stderr, "\n");
}
int
main(int argc, char *argv[])
{
int foo, bar, baz, dev;
int devmask = 0, recmask = 0, recsrc = 0, orecsrc;
int dusage = 0, drecsrc = 0;
int l, r;
char *name;
name = strdup("/dev/mixer");
if (!strcmp(argv[0], "mixer2"))
name = strdup("/dev/mixer1");
else if (!strcmp(argv[0], "mixer3"))
name = strdup("/dev/mixer2");
if (argc > 2 && strcmp(argv[1], "-f") == 0) {
name = strdup(argv[2]);
argc -= 2; argv += 2;
}
if ((baz = open(name, O_RDWR)) < 0)
err(1, "%s", name);
free(name);
if (ioctl(baz, SOUND_MIXER_READ_DEVMASK, &devmask) == -1)
err(1, "SOUND_MIXER_READ_DEVMASK");
if (ioctl(baz, SOUND_MIXER_READ_RECMASK, &recmask) == -1)
err(1, "SOUND_MIXER_READ_RECMASK");
if (ioctl(baz, SOUND_MIXER_READ_RECSRC, &recsrc) == -1)
err(1, "SOUND_MIXER_READ_RECSRC");
orecsrc = recsrc;
if (argc == 1) {
for (foo = 0; foo < SOUND_MIXER_NRDEVICES; foo++) {
if (!((1 << foo) & devmask))
continue;
if (ioctl(baz, MIXER_READ(foo),&bar)== -1) {
warn("MIXER_READ");
continue;
}
printf("Mixer %-8s is currently set to %3d:%d\n", names[foo], bar & 0x7f, (bar >> 8) & 0x7f);
}
return(0);
}
argc--; argv++;
while (argc) {
if (!strcmp("recsrc", *argv)) {
drecsrc = 1;
argc--; argv++;
continue;
} else if (argc > 1 && !strcmp("rec", *argv + 1)) {
if (**argv != '+' && **argv != '-' &&
**argv != '=' && **argv != '^') {
dusage = 1;
argc -= 1; argv += 1;
continue;
}
if ((dev = res_name(argv[1], recmask)) == -1) {
dusage = 1;
argc -= 1; argv += 1;
continue;
}
switch(**argv) {
case '+':
recsrc |= (1 << dev);
break;
case '-':
recsrc &= ~(1 << dev);
break;
case '=':
recsrc = (1 << dev);
break;
case '^':
recsrc ^= (1 << dev);
break;
}
drecsrc = 1;
argc -= 2; argv += 2;
continue;
}
if ((dev = res_name(*argv, devmask)) == -1) {
dusage = 1;
argc--; argv++;
continue;
}
switch(argc > 1 ? sscanf(argv[1], "%d:%d", &l, &r) : 0) {
case 0:
if (ioctl(baz, MIXER_READ(dev),&bar)== -1) {
warn("MIXER_READ");
argc--; argv++;
continue;
}
printf("Mixer %-8s is currently set to %3d:%d\n",
names[dev], bar & 0x7f, (bar >> 8) & 0x7f);
argc--; argv++;
break;
case 1:
r = l;
case 2:
if (l < 0)
l = 0;
else if (l > 100)
l = 100;
if (r < 0)
r = 0;
else if (r > 100)
r = 100;
printf("Setting the mixer %s to %d:%d.\n", names[dev],
l, r);
l |= r << 8;
if (ioctl(baz, MIXER_WRITE(dev), &l) == -1)
warn("WRITE_MIXER");
argc -= 2; argv += 2;
break;
}
}
if (orecsrc != recsrc)
if (ioctl(baz, SOUND_MIXER_WRITE_RECSRC, &recsrc) == -1)
err(1, "SOUND_MIXER_WRITE_RECSRC");
if (drecsrc) {
if (ioctl(baz, SOUND_MIXER_READ_RECSRC, &recsrc) == -1)
err(1, "SOUND_MIXER_READ_RECSRC");
print_recsrc(recsrc);
}
close(baz);
if (dusage)
usage(devmask, recmask);
exit(0);
}
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