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sndstat nvlist test
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Authored By
christos
Jul 5 2024, 2:14 PM
Size
6 KB
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sndstat nvlist test
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#include <sys/sndstat.h>
#include <sys/nv.h>
#include <err.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
int
main(int argc, char *argv[])
{
nvlist_t *nvl;
const nvlist_t * const *di;
struct sndstioc_nv_arg arg;
size_t nitems;
int fd;
int pchan, rchan, pvchan, rvchan, chans;
if ((fd = open("/dev/sndstat", O_RDONLY)) < 0)
err(1, "open");
if (ioctl(fd, SNDSTIOC_REFRESH_DEVS, NULL) < 0)
err(1, "ioctl(SNDSTIOC_REFRESH_DEVS)");
arg.nbytes = 0;
arg.buf = NULL;
if (ioctl(fd, SNDSTIOC_GET_DEVS, &arg) < 0)
err(1, "(1) ioctl(SNDSTIOC_GET_DEVS)");
if ((arg.buf = malloc(arg.nbytes)) == NULL)
err(1, "malloc");
if (ioctl(fd, SNDSTIOC_GET_DEVS, &arg) < 0)
err(1, "(2) ioctl(SNDSTIOC_GET_DEVS)");
nvl = nvlist_unpack(arg.buf, arg.nbytes, 0);
free(arg.buf);
di = nvlist_get_nvlist_array(nvl, SNDST_DSPS, &nitems);
for (size_t i = 0; i < nitems; i++) {
const nvlist_t * const *cdi;
size_t nchans;
printf("nameunit=%s\n", nvlist_get_string(di[i],
SNDST_DSPS_NAMEUNIT));
printf("from_user=%d\n", nvlist_get_bool(di[i],
SNDST_DSPS_FROM_USER));
printf("devnode=%s\n", nvlist_get_string(di[i],
SNDST_DSPS_DEVNODE));
printf("desc=%s\n", nvlist_get_string(di[i],
SNDST_DSPS_DESC));
pchan = nvlist_get_number(di[i], SNDST_DSPS_PCHAN);
rchan = nvlist_get_number(di[i], SNDST_DSPS_RCHAN);
if (pchan) {
printf("INFO_PLAY\n");
printf("\tplay_min_rate=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_PLAY), SNDST_DSPS_INFO_MIN_RATE));
printf("\tplay_max_rate=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_PLAY), SNDST_DSPS_INFO_MAX_RATE));
printf("\tplay_formats=%#08lx\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_PLAY), SNDST_DSPS_INFO_FORMATS));
printf("\tplay_min_chn=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_PLAY), SNDST_DSPS_INFO_MIN_CHN));
printf("\tplay_max_chn=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_PLAY), SNDST_DSPS_INFO_MAX_CHN));
}
if (rchan) {
printf("INFO_REC\n");
printf("\trec_min_rate=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_REC), SNDST_DSPS_INFO_MIN_RATE));
printf("\trec_max_rate=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_REC), SNDST_DSPS_INFO_MAX_RATE));
printf("\trec_formats=%#08lx\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_REC), SNDST_DSPS_INFO_FORMATS));
printf("\trec_min_chn=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_REC), SNDST_DSPS_INFO_MIN_CHN));
printf("\trec_max_chn=%lu\n",
nvlist_get_number(nvlist_get_nvlist(di[i],
SNDST_DSPS_INFO_REC), SNDST_DSPS_INFO_MAX_CHN));
}
if (!nvlist_exists(di[i], SNDST_DSPS_PROVIDER_INFO))
continue;
pvchan = nvlist_get_number(
nvlist_get_nvlist(di[i], SNDST_DSPS_PROVIDER_INFO),
SNDST_DSPS_SOUND4_PVCHAN);
rvchan = nvlist_get_number(
nvlist_get_nvlist(di[i], SNDST_DSPS_PROVIDER_INFO),
SNDST_DSPS_SOUND4_RVCHAN);
chans = pchan + rchan + pvchan + rvchan;
printf("pchan=%d\n", pchan);
printf("rchan=%d\n", rchan);
printf("pvchan=%d\n", pvchan);
printf("rvchan=%d\n", rvchan);
printf("chans=%d\n", chans);
cdi = nvlist_get_nvlist_array(
nvlist_get_nvlist(di[i], SNDST_DSPS_PROVIDER_INFO),
SNDST_DSPS_SOUND4_CHAN_INFO, &nchans);
for (size_t j = 0; j < nchans; j++) {
printf("chan=%s\n", nvlist_get_string(cdi[j],
SNDST_DSPS_SOUND4_CHAN_NAME));
printf("\tparentchan=%s\n", nvlist_get_string(cdi[j],
SNDST_DSPS_SOUND4_CHAN_PARENTCHAN));
printf("\tunit=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_UNIT));
printf("\tlatency=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_LATENCY));
printf("\trate=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_RATE));
printf("\tformat=%#08x\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_FORMAT));
printf("\tpid=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_PID));
printf("\tcomm=%s\n", nvlist_get_string(cdi[j],
SNDST_DSPS_SOUND4_CHAN_COMM));
printf("\tinterrupts=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_INTR));
printf("\txruns=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_XRUNS));
printf("\tfeedcount=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_FEEDCNT));
printf("\tleftvol=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_LEFTVOL));
printf("\trightvol=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_RIGHTVOL));
printf("\thwbuf_fmt=%#08x\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_HWBUF_FORMAT));
printf("\thwbuf_size=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_HWBUF_SIZE));
printf("\thwbuf_blksz=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_HWBUF_BLKSZ));
printf("\thwbuf_blkcnt=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_HWBUF_BLKCNT));
printf("\thwbuf_free=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_HWBUF_FREE));
printf("\thwbuf_ready=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_HWBUF_READY));
printf("\tswbuf_fmt=%#08x\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_SWBUF_FORMAT));
printf("\tswbuf_size=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_SWBUF_SIZE));
printf("\tswbuf_blksz=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_SWBUF_BLKSZ));
printf("\tswbuf_blkcnt=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_SWBUF_BLKCNT));
printf("\tswbuf_free=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_SWBUF_FREE));
printf("\tswbuf_ready=%d\n", (int)nvlist_get_number(cdi[j],
SNDST_DSPS_SOUND4_CHAN_SWBUF_READY));
printf("\tfeederchain=%s\n", nvlist_get_string(cdi[j],
SNDST_DSPS_SOUND4_CHAN_FEEDERCHAIN));
}
}
nvlist_destroy(nvl);
return (0);
}

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sndstat nvlist test (6 KB)

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