8 #ifdef HAVE_LINUX_SOUNDCARD_H
9 #include <linux/soundcard.h>
11 #include <sys/soundcard.h>
12 #endif /* HAVE_LINUX_SOUNDCARD_H */
14 #define MIXER_DEV "/dev/mixer"
17 static const char *devs[] = SOUND_DEVICE_NAMES;
19 int mixer_init(const char *name)
23 if (name == 0 || name[0] == '\0')
28 mixer_fd = open(MIXER_DEV, O_RDONLY);
30 ERR("can't open %s: %s", MIXER_DEV,
36 for (i = 0; i < sizeof(devs) / sizeof(const char *); i++) {
37 if (strcasecmp(devs[i], name) == 0) {
45 static int mixer_get(int i)
50 if (ioctl(mixer_fd, MIXER_READ(i), &val) == -1) {
52 ERR("mixer ioctl: %s", strerror(errno));
61 int mixer_get_avg(int i)
64 return ((v >> 8) + (v & 0xFF)) / 2;
67 int mixer_get_left(int i)
69 return mixer_get(i) >> 8;
72 int mixer_get_right(int i)
74 return mixer_get(i) & 0xFF;