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diff --git a/usr.sbin/Makefile b/usr.sbin/Makefile
--- a/usr.sbin/Makefile
+++ b/usr.sbin/Makefile
@@ -3,6 +3,7 @@
SUBDIR= adduser \
arp \
+ audio \
binmiscctl \
boottrace \
bsdconfig \
diff --git a/usr.sbin/audio/Makefile b/usr.sbin/audio/Makefile
new file mode 100644
--- /dev/null
+++ b/usr.sbin/audio/Makefile
@@ -0,0 +1,8 @@
+.include <src.opts.mk>
+
+PROG= audio
+SRCS= ${PROG}.c
+MAN= ${PROG}.8
+LDFLAGS+= -lnv -lmixer
+
+.include <bsd.prog.mk>
diff --git a/usr.sbin/audio/audio.8 b/usr.sbin/audio/audio.8
new file mode 100644
--- /dev/null
+++ b/usr.sbin/audio/audio.8
@@ -0,0 +1,188 @@
+.\"-
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.\" Copyright (c) 2024 The FreeBSD Foundation
+.\"
+.\" Portions of this software were developed by Christos Margiolis
+.\" <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
+.\"
+.Dd August 23, 2024
+.Dt AUDIO 8
+.Os
+.Sh NAME
+.Nm audio
+.Nd list and modify soundcard properties
+.Sh SYNOPSIS
+.Nm
+.Op Fl f Ar device
+.Op Fl hov
+.Op Ar control Ns Oo = Ns Ar value Oc Ar ...
+.Sh DESCRIPTION
+The
+.Nm
+utility is used to set and display sound card properties, using a
+control-driven interface, in order to filter and/or set specific properties.
+.Pp
+The options are as follows:
+.Bl -tag -width "-f device"
+.It Fl f Ar device
+Choose a specific audio device
+.Pq see Sx FILES .
+Userland devices (e.g those registered by
+.Xr virtual_oss 8
+can also be selected.
+.It Fl h
+Print a help message.
+.It Fl o
+Print values in a format suitable for use inside scripts.
+.It Fl v
+Run in verbose mode.
+This option will print all of the device's channel properties.
+.El
+.Pp
+The device controls are as follows:
+.Bl -column xxxxxxxxxxxxxxx xxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxx -offset indent
+.It Sy Name Ta Sy Type Ta Sy Read/Write Ta Sy Action
+.It name Ta String Ta Read Ta Device name
+.It desc Ta String Ta Read Ta Device description
+.It devnode Ta String Ta Read Ta Device node
+.It status Ta String Ta Read Ta Device status
+.It unit Ta Number Ta Read Ta Device unit
+.It caps Ta String Ta Read Ta Device OSS capabitilies
+.It from_user Ta Boolean Ta Read Ta Userland device
+.It bitperfect Ta Boolean Ta Read/Write Ta Bit-perfect mode enabled
+.It realtime Ta Boolean Ta Read/Write Ta Real-time mode enabled
+.It play Ta Group Ta Read Ta Playback properties
+.It play.rate Ta Number Ta Read/Write Ta Playback sample rate
+.It play.format Ta String Ta Read/Write Ta Playback format
+.It play.autoconv Ta Boolean Ta Read/Write Ta Playback auto-conversions enabled
+.It play.hwchans Ta Number Ta Read Ta Number of hardware playback channels
+.It play.vchans Ta Number Ta Read/Write Ta Number of playback VCHANs (virtual channels)
+.It play.min_rate Ta Number Ta Read Ta Minimum playback sample rate
+.It play.max_rate Ta Number Ta Read Ta Maximum playback sample rate
+.It play.min_chans Ta Number Ta Read Ta Minimum playback sample channels
+.It play.max_chans Ta Number Ta Read Ta Maximum playback sample channels
+.It play.formats Ta String Ta Read Ta Playback formats
+.It rec Ta Group Ta Read Ta Recording properties
+.It rec.rate Ta Number Ta Read/Write Ta Recording sample rate
+.It rec.format Ta String Ta Read/Write Ta Recording format
+.It rec.autoconv Ta Boolean Ta Read/Write Ta Recording auto-conversions enabled
+.It rec.hwchans Ta Number Ta Read Ta Number of hardware recording channels
+.It rec.vchans Ta Number Ta Read/Write Ta Number of recording VCHANs (virtual channels)
+.It rec.min_rate Ta Number Ta Read Ta Minimum recording sample rate
+.It rec.max_rate Ta Number Ta Read Ta Maximum recording sample rate
+.It rec.min_chans Ta Number Ta Read Ta Minimum recording sample channels
+.It rec.max_chans Ta Number Ta Read Ta Maximum recording sample channels
+.It rec.formats Ta String Ta Read Ta Recording formats
+.El
+.Pp
+Note that the
+.Pa play.rate ,
+.Pa play.format ,
+.Pa rec.rate and
+.Pa rec.format
+controls will be read-only if VCHANs are disabled.
+.Pp
+The device channel controls are as follows:
+.Bl -column xxxxxxxxxxxxxxx xxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxx -offset indent
+.It Sy Name Ta Sy Type Ta Sy Read/Write Ta Sy Action
+.It name Ta String Ta Read Ta Channel name
+.It parentchan Ta String Ta Read Ta Primary (parent) channel name
+.It unit Ta Number Ta Read Ta Channel unit
+.It caps Ta String Ta Read Ta Channel OSS capabilities
+.It latency Ta Number Ta Read Ta Channel latency
+.It rate Ta Number Ta Read Ta Channel sample rate
+.It format Ta String Ta Read Ta Channel format
+.It pid Ta Number Ta Read Ta PID of process consuming channel
+.It proc Ta String Ta Read Ta Name of process consuming channel
+.It interrupts Ta Number Ta Read Ta Number of interrupts since channel was opened
+.It xruns Ta Number Ta Read Ta Number of playback underruns/recoring overruns
+.It feedcount Ta Number Ta Read Ta Number of bytes fed to channel
+.It volume Ta Volume Ta Read Ta Channel left-right volume in normalized form (0.00 to 1.00).
+.It hwbuf Ta Group Ta Read Ta Hardware buffer properties
+.It hwbuf.format Ta String Ta Read Ta Hardware buffer format
+.It hwbuf.size_bytes Ta Number Ta Read Ta Hardware buffer size in bytes
+.It hwbuf.size_frames Ta Number Ta Read Ta Hardware buffer size in frames
+.It hwbuf.blksz Ta Number Ta Read Ta Hardware buffer block size
+.It hwbuf.blkcnt Ta Number Ta Read Ta Hardware buffer block count
+.It hwbuf.free Ta Number Ta Read Ta Hardware buffer free space in bytes
+.It hwbuf.ready Ta Number Ta Read Ta Hardware buffer ready space in bytes
+.It swbuf Ta Group Ta Read Ta Software buffer properties
+.It swbuf.format Ta String Ta Read Ta Software buffer format
+.It swbuf.size_bytes Ta Number Ta Read Ta Software buffer size in bytes
+.It swbuf.size_frames Ta Number Ta Read Ta Software buffer size in frames
+.It swbuf.blksz Ta Number Ta Read Ta Software buffer block size
+.It swbuf.blkcnt Ta Number Ta Read Ta Software buffer block count
+.It swbuf.free Ta Number Ta Read Ta Software buffer free space in bytes
+.It swbuf.ready Ta Number Ta Read Ta Software buffer ready space in bytes
+.It feederchain Ta String Ta Read Ta Channel feeder chain
+.El
+.Sh FILES
+.Bl -tag -width /dev/dspX -compact
+.It Pa /dev/dsp
+The default audio device.
+.It Pa /dev/dspX
+The audio device file, where X is the unit of the device, for example
+.Ar /dev/dsp0 .
+.El
+.Sh EXAMPLES
+Disable auto-conversions and enable realtime mode to get as low latencies as
+possible:
+.Bd -literal -offset indent
+$ audio play.autoconv=0 rec.autoconv=0 realtime=1
+.Ed
+.Pp
+Set the playback sample format to 2-channel signed 24-bit low endian, and sample
+rate to 48000 Hz:
+.Bd -literal -offset indent
+$ audio play.format=s24le:2.0 play.rate=48000
+.Ed
+.Pp
+List the PIDs and process names of all channels for
+.Pa /dev/dsp1 :
+.Bd -literal -offset indent
+$ audio -f /dev/dsp1 -v pid proc
+.Ed
+.Pp
+Dump
+.Pa /dev/dsp0
+information to a file and retrieve back later:
+.Bd -literal -offset indent
+$ audio -f /dev/dsp0 -o > info
+\&...
+$ audio -f /dev/dsp0 `cat info`
+.Ed
+.Sh SEE ALSO
+.Xr sndstat 4 ,
+.Xr sound 4 ,
+.Xr mixer 8 ,
+.Xr sysctl 8
+.Sh AUTHORS
+The
+.Nm
+utility was implemented by
+.An Christos Margiolis Aq Mt christos@FreeBSD.org
+under sponsorship from the
+.Fx
+Foundation.
diff --git a/usr.sbin/audio/audio.c b/usr.sbin/audio/audio.c
new file mode 100644
--- /dev/null
+++ b/usr.sbin/audio/audio.c
@@ -0,0 +1,993 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2024 The FreeBSD Foundation
+ *
+ * This software was developed by Christos Margiolis <christos@FreeBSD.org>
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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 <sys/nv.h>
+#include <sys/queue.h>
+#include <sys/sndstat.h>
+#include <sys/soundcard.h>
+#include <sys/sysctl.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libgen.h>
+#include <limits.h>
+#include <mixer.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Taken from sys/dev/sound/pcm/ */
+#define STATUS_LEN 64
+#define FMTSTR_LEN 16
+
+struct audio_chan {
+ char name[NAME_MAX];
+ char parentchan[NAME_MAX];
+ int unit;
+#define INPUT 0
+#define OUTPUT 1
+ int direction;
+ char caps[BUFSIZ];
+ int latency;
+ int rate;
+ char format[FMTSTR_LEN];
+ int pid;
+ char proc[NAME_MAX];
+ int interrupts;
+ int xruns;
+ int feedcount;
+ int volume;
+ struct {
+ char format[FMTSTR_LEN];
+ int size_bytes;
+ int size_frames;
+ int blksz;
+ int blkcnt;
+ int free;
+ int ready;
+ } hwbuf, swbuf;
+ char feederchain[BUFSIZ];
+ struct audio_dev *dev;
+ TAILQ_ENTRY(audio_chan) next;
+};
+
+struct audio_dev {
+ char name[NAME_MAX];
+ char desc[NAME_MAX];
+ char devnode[NAME_MAX];
+ char status[BUFSIZ];
+ int unit;
+ char caps[BUFSIZ];
+ int from_user;
+ int bitperfect;
+ int realtime;
+ struct {
+ int rate;
+ char format[FMTSTR_LEN];
+ int autoconv;
+ int hwchans;
+ int vchans;
+ int min_rate;
+ int max_rate;
+ int min_chans;
+ int max_chans;
+ char formats[BUFSIZ];
+ } play, rec;
+ TAILQ_HEAD(, audio_chan) chans;
+};
+
+struct audio_ctl {
+ const char *name;
+ size_t off;
+#define STR 0
+#define NUM 1
+#define VOL 2
+#define GRP 3
+ int type;
+ int (*mod)(struct audio_dev *, void *);
+};
+
+struct map {
+ int val;
+ const char *str;
+};
+
+static int mod_bitperfect(struct audio_dev *, void *);
+static int mod_realtime(struct audio_dev *, void *);
+static int mod_play_rate(struct audio_dev *, void *);
+static int mod_play_format(struct audio_dev *, void *);
+static int mod_play_autoconv(struct audio_dev *, void *);
+static int mod_play_vchans(struct audio_dev *, void *);
+static int mod_rec_rate(struct audio_dev *, void *);
+static int mod_rec_format(struct audio_dev *, void *);
+static int mod_rec_autoconv(struct audio_dev *, void *);
+static int mod_rec_vchans(struct audio_dev *, void *);
+
+static struct audio_ctl dev_ctls[] = {
+#define F(member) offsetof(struct audio_dev, member)
+ { "name", F(name), STR, NULL },
+ { "desc", F(desc), STR, NULL },
+ { "devnode", F(devnode), STR, NULL },
+ { "status", F(status), STR, NULL },
+ { "unit", F(unit), NUM, NULL },
+ { "caps", F(caps), STR, NULL },
+ { "from_user", F(from_user), NUM, NULL },
+ { "bitperfect", F(bitperfect), NUM, mod_bitperfect },
+ { "realtime", F(realtime), NUM, mod_realtime },
+ { "play", F(play), GRP, NULL },
+ { "play.rate", F(play.rate), NUM, mod_play_rate },
+ { "play.format", F(play.format), STR, mod_play_format },
+ { "play.autoconv", F(play.autoconv), NUM, mod_play_autoconv },
+ { "play.hwchans", F(play.hwchans), NUM, NULL },
+ { "play.vchans", F(play.vchans), NUM, mod_play_vchans },
+ { "play.min_rate", F(play.min_rate), NUM, NULL },
+ { "play.max_rate", F(play.max_rate), NUM, NULL },
+ { "play.min_chans", F(play.min_chans), NUM, NULL },
+ { "play.max_chans", F(play.max_chans), NUM, NULL },
+ { "play.formats", F(play.formats), STR, NULL },
+ { "rec", F(rec), GRP, NULL },
+ { "rec.rate", F(rec.rate), NUM, mod_rec_rate },
+ { "rec.format", F(rec.format), STR, mod_rec_format },
+ { "rec.autoconv", F(rec.autoconv), NUM, mod_rec_autoconv },
+ { "rec.hwchans", F(rec.hwchans), NUM, NULL },
+ { "rec.vchans", F(rec.vchans), NUM, mod_rec_vchans },
+ { "rec.min_rate", F(rec.min_rate), NUM, NULL },
+ { "rec.max_rate", F(rec.max_rate), NUM, NULL },
+ { "rec.min_chans", F(rec.min_chans), NUM, NULL },
+ { "rec.max_chans", F(rec.max_chans), NUM, NULL },
+ { "rec.formats", F(rec.formats), STR, NULL },
+ { NULL, 0, 0, NULL }
+#undef F
+};
+
+static struct audio_ctl chan_ctls[] = {
+#define F(member) offsetof(struct audio_chan, member)
+ { "name", F(name), STR, NULL },
+ { "parentchan", F(parentchan), STR, NULL },
+ { "unit", F(unit), NUM, NULL },
+ { "caps", F(caps), STR, NULL },
+ { "latency", F(latency), NUM, NULL },
+ { "rate", F(rate), NUM, NULL },
+ { "format", F(format), STR, NULL },
+ { "pid", F(pid), NUM, NULL },
+ { "proc", F(proc), STR, NULL },
+ { "interrupts", F(interrupts), NUM, NULL },
+ { "xruns", F(xruns), NUM, NULL },
+ { "feedcount", F(feedcount), NUM, NULL },
+ { "volume", F(volume), VOL, NULL },
+ { "hwbuf", F(hwbuf), GRP, NULL },
+ { "hwbuf.format", F(hwbuf.format), STR, NULL },
+ { "hwbuf.size_bytes", F(hwbuf.size_bytes), NUM, NULL },
+ { "hwbuf.size_frames", F(hwbuf.size_frames), NUM, NULL },
+ { "hwbuf.blksz", F(hwbuf.blksz), NUM, NULL },
+ { "hwbuf.blkcnt", F(hwbuf.blkcnt), NUM, NULL },
+ { "hwbuf.free", F(hwbuf.free), NUM, NULL },
+ { "hwbuf.ready", F(hwbuf.ready), NUM, NULL },
+ { "swbuf", F(swbuf), GRP, NULL },
+ { "swbuf.format", F(swbuf.format), STR, NULL },
+ { "swbuf.size_bytes", F(swbuf.size_bytes), NUM, NULL },
+ { "swbuf.size_frames", F(swbuf.size_frames), NUM, NULL },
+ { "swbuf.blksz", F(swbuf.blksz), NUM, NULL },
+ { "swbuf.blkcnt", F(swbuf.blkcnt), NUM, NULL },
+ { "swbuf.free", F(swbuf.free), NUM, NULL },
+ { "swbuf.ready", F(swbuf.ready), NUM, NULL },
+ { "feederchain", F(feederchain), STR, NULL },
+ { NULL, 0, 0, NULL }
+#undef F
+};
+
+/*
+ * Taken from the OSSv4 manual. Not all of them are supported on FreeBSD
+ * however, and some of them are obsolete.
+ */
+static struct map capmap[] = {
+ { PCM_CAP_ANALOGIN, "PCM_CAP_ANALOGIN" },
+ { PCM_CAP_ANALOGOUT, "PCM_CAP_ANALOGOUT" },
+ { PCM_CAP_BATCH, "PCM_CAP_BATCH" },
+ { PCM_CAP_BIND, "PCM_CAP_BIND" },
+ { PCM_CAP_COPROC, "PCM_CAP_COPROC" },
+ { PCM_CAP_DEFAULT, "PCM_CAP_DEFAULT" },
+ { PCM_CAP_DIGITALIN, "PCM_CAP_DIGITALIN" },
+ { PCM_CAP_DIGITALOUT, "PCM_CAP_DIGITALOUT" },
+ { PCM_CAP_DUPLEX, "PCM_CAP_DUPLEX" },
+ { PCM_CAP_FREERATE, "PCM_CAP_FREERATE" },
+ { PCM_CAP_HIDDEN, "PCM_CAP_HIDDEN" },
+ { PCM_CAP_INPUT, "PCM_CAP_INPUT" },
+ { PCM_CAP_MMAP, "PCM_CAP_MMAP" },
+ { PCM_CAP_MODEM, "PCM_CAP_MODEM" },
+ { PCM_CAP_MULTI, "PCM_CAP_MULTI" },
+ { PCM_CAP_OUTPUT, "PCM_CAP_OUTPUT" },
+ { PCM_CAP_REALTIME, "PCM_CAP_REALTIME" },
+ { PCM_CAP_REVISION, "PCM_CAP_REVISION" },
+ { PCM_CAP_SHADOW, "PCM_CAP_SHADOW" },
+ { PCM_CAP_SPECIAL, "PCM_CAP_SPECIAL" },
+ { PCM_CAP_TRIGGER, "PCM_CAP_TRIGGER" },
+ { PCM_CAP_VIRTUAL, "PCM_CAP_VIRTUAL" },
+ { 0, NULL }
+};
+
+static struct map fmtmap[] = {
+ { AFMT_A_LAW, "alaw" },
+ { AFMT_MU_LAW, "mulaw" },
+ { AFMT_S8, "s8" },
+ { AFMT_U8, "u8" },
+ { AFMT_S16_LE, "s16le" },
+ { AFMT_S16_BE, "s16be" },
+ { AFMT_U16_LE, "u16le" },
+ { AFMT_U16_BE, "u16be" },
+ { AFMT_S24_LE, "s24le" },
+ { AFMT_S24_BE, "s24be" },
+ { AFMT_U24_LE, "u24le" },
+ { AFMT_U24_BE, "u24be" },
+ { AFMT_S32_LE, "s32le" },
+ { AFMT_S32_BE, "s32be" },
+ { AFMT_U32_LE, "u32le" },
+ { AFMT_U32_BE, "u32be" },
+ { AFMT_AC3, "ac3" },
+ { 0, NULL }
+};
+
+static bool oflag = false;
+static bool vflag = false;
+
+static void
+cap2str(char *buf, size_t size, int caps)
+{
+ struct map *p;
+
+ for (p = capmap; p->str != NULL; p++) {
+ if ((p->val & caps) == 0)
+ continue;
+ strlcat(buf, p->str, size);
+ strlcat(buf, ",", size);
+ }
+ if (*buf == '\0')
+ strlcpy(buf, "UNKNOWN", size);
+ else
+ buf[strlen(buf) - 1] = '\0';
+}
+
+static void
+fmt2str(char *buf, size_t size, int fmt)
+{
+ struct map *p;
+ int enc, ch, ext;
+
+ enc = fmt & 0xf00fffff;
+ ch = (fmt & 0x07f00000) >> 20;
+ ext = (fmt & 0x08000000) >> 27;
+
+ for (p = fmtmap; p->str != NULL; p++) {
+ if ((p->val & enc) == 0)
+ continue;
+ strlcat(buf, p->str, size);
+ if (ch) {
+ snprintf(buf + strlen(buf), size,
+ ":%d.%d", ch - ext, ext);
+ }
+ strlcat(buf, ",", size);
+ }
+ if (*buf == '\0')
+ strlcpy(buf, "UNKNOWN", size);
+ else
+ buf[strlen(buf) - 1] = '\0';
+}
+
+static int
+bytes2frames(int bytes, int fmt)
+{
+ int enc, ch, samplesz;
+
+ enc = fmt & 0xf00fffff;
+ ch = (fmt & 0x07f00000) >> 20;
+ /* Add the channel extension if present (e.g 2.1). */
+ ch += (fmt & 0x08000000) >> 27;
+
+ if (enc & (AFMT_S8 | AFMT_U8 | AFMT_MU_LAW | AFMT_A_LAW))
+ samplesz = 1;
+ else if (enc & (AFMT_S16_NE | AFMT_U16_NE))
+ samplesz = 2;
+ else if (enc & (AFMT_S24_NE | AFMT_U24_NE))
+ samplesz = 3;
+ else if (enc & (AFMT_S32_NE | AFMT_U32_NE))
+ samplesz = 4;
+ else
+ samplesz = 0;
+
+ if (!samplesz || !ch)
+ return (-1);
+
+ return (bytes / (samplesz * ch));
+}
+
+static struct audio_dev *
+read_dev(char *path)
+{
+ nvlist_t *nvl;
+ const nvlist_t * const *di;
+ const nvlist_t * const *cdi;
+ struct sndstioc_nv_arg arg;
+ struct audio_dev *dp = NULL;
+ struct audio_chan *ch;
+ size_t nitems, nchans, i, j;
+ int fd, caps, unit;
+
+ if ((fd = open("/dev/sndstat", O_RDONLY)) < 0)
+ err(1, "open(/dev/sndstat)");
+
+ 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, "ioctl(SNDSTIOC_GET_DEVS#1)");
+
+ if ((arg.buf = malloc(arg.nbytes)) == NULL)
+ err(1, "malloc");
+
+ if (ioctl(fd, SNDSTIOC_GET_DEVS, &arg) < 0)
+ err(1, "ioctl(SNDSTIOC_GET_DEVS#2)");
+
+ if ((nvl = nvlist_unpack(arg.buf, arg.nbytes, 0)) == NULL)
+ err(1, "nvlist_unpack");
+
+ if (nvlist_empty(nvl) || !nvlist_exists(nvl, SNDST_DSPS))
+ errx(1, "no soundcards attached");
+
+ if (path == NULL || (path != NULL && strcmp(basename(path), "dsp") == 0))
+ unit = mixer_get_dunit();
+ else
+ unit = -1;
+
+ /* Find whether the requested device exists */
+ di = nvlist_get_nvlist_array(nvl, SNDST_DSPS, &nitems);
+ for (i = 0; i < nitems; i++) {
+ if (unit == -1 && strcmp(basename(path),
+ nvlist_get_string(di[i], SNDST_DSPS_DEVNODE)) == 0)
+ break;
+ else if (nvlist_exists(di[i], SNDST_DSPS_PROVIDER_INFO) &&
+ (int)nvlist_get_number(nvlist_get_nvlist(di[i],
+ SNDST_DSPS_PROVIDER_INFO), SNDST_DSPS_SOUND4_UNIT) == unit)
+ break;;
+ }
+ if (i == nitems)
+ errx(1, "device not found");
+
+#define NV(type, item) \
+ nvlist_get_ ## type (di[i], SNDST_DSPS_ ## item)
+ if ((dp = calloc(1, sizeof(struct audio_dev))) == NULL)
+ err(1, "calloc");
+
+ dp->unit = -1;
+ strlcpy(dp->name, NV(string, NAMEUNIT), sizeof(dp->name));
+ strlcpy(dp->desc, NV(string, DESC), sizeof(dp->desc));
+ strlcpy(dp->devnode, NV(string, DEVNODE), sizeof(dp->devnode));
+ dp->from_user = NV(bool, FROM_USER);
+ dp->play.hwchans = NV(number, PCHAN);
+ dp->rec.hwchans = NV(number, RCHAN);
+#undef NV
+
+ if (dp->play.hwchans && !nvlist_exists(di[i], SNDST_DSPS_INFO_PLAY))
+ errx(1, "playback channel list empty");
+ if (dp->rec.hwchans && !nvlist_exists(di[i], SNDST_DSPS_INFO_REC))
+ errx(1, "recording channel list empty");
+
+#define NV(type, mode, item) \
+ nvlist_get_ ## type (nvlist_get_nvlist(di[i], \
+ SNDST_DSPS_INFO_ ## mode), SNDST_DSPS_INFO_ ## item)
+ if (dp->play.hwchans) {
+ dp->play.min_rate = NV(number, PLAY, MIN_RATE);
+ dp->play.max_rate = NV(number, PLAY, MAX_RATE);
+ dp->play.min_chans = NV(number, PLAY, MIN_CHN);
+ dp->play.max_chans = NV(number, PLAY, MAX_CHN);
+ fmt2str(dp->play.formats, sizeof(dp->play.formats),
+ NV(number, PLAY, FORMATS));
+ }
+ if (dp->rec.hwchans) {
+ dp->rec.min_rate = NV(number, REC, MIN_RATE);
+ dp->rec.max_rate = NV(number, REC, MAX_RATE);
+ dp->rec.min_chans = NV(number, REC, MIN_CHN);
+ dp->rec.max_chans = NV(number, REC, MAX_CHN);
+ fmt2str(dp->rec.formats, sizeof(dp->rec.formats),
+ NV(number, REC, FORMATS));
+ }
+#undef NV
+
+ /*
+ * Skip further parsing if the provider is not sound(4), as the
+ * following code is sound(4)-specific.
+ */
+ if (strcmp(nvlist_get_string(di[i], SNDST_DSPS_PROVIDER),
+ SNDST_DSPS_SOUND4_PROVIDER) != 0)
+ goto done;
+
+ if (!nvlist_exists(di[i], SNDST_DSPS_PROVIDER_INFO))
+ errx(1, "provider_info list empty");
+
+#define NV(type, item) \
+ nvlist_get_ ## type (nvlist_get_nvlist(di[i], \
+ SNDST_DSPS_PROVIDER_INFO), SNDST_DSPS_SOUND4_ ## item)
+ strlcpy(dp->status, NV(string, STATUS), sizeof(dp->status));
+ dp->unit = NV(number, UNIT);
+ dp->bitperfect = NV(bool, BITPERFECT);
+ dp->play.vchans = NV(number, PVCHAN);
+ dp->play.rate = NV(number, PVCHANRATE);
+ fmt2str(dp->play.format, sizeof(dp->play.format),
+ NV(number, PVCHANFORMAT));
+ dp->rec.vchans = NV(number, RVCHAN);
+ dp->rec.rate = NV(number, RVCHANRATE);
+ fmt2str(dp->rec.format, sizeof(dp->rec.format),
+ NV(number, RVCHANFORMAT));
+#undef NV
+
+ dp->play.autoconv = dp->play.vchans ? 1 : 0;
+ dp->rec.autoconv = dp->rec.vchans ? 1 : 0;
+
+ if (!nvlist_exists(nvlist_get_nvlist(di[i],
+ SNDST_DSPS_PROVIDER_INFO), SNDST_DSPS_SOUND4_CHAN_INFO))
+ errx(1, "channel info list empty");
+
+ cdi = nvlist_get_nvlist_array(
+ nvlist_get_nvlist(di[i], SNDST_DSPS_PROVIDER_INFO),
+ SNDST_DSPS_SOUND4_CHAN_INFO, &nchans);
+
+ TAILQ_INIT(&dp->chans);
+ caps = 0;
+ for (j = 0; j < nchans; j++) {
+#define NV(type, item) \
+ nvlist_get_ ## type (cdi[j], SNDST_DSPS_SOUND4_CHAN_ ## item)
+ if ((ch = calloc(1, sizeof(struct audio_chan))) == NULL)
+ err(1, "calloc");
+
+ strlcpy(ch->name, NV(string, NAME), sizeof(ch->name));
+ strlcpy(ch->parentchan, NV(string, PARENTCHAN),
+ sizeof(ch->parentchan));
+ ch->unit = NV(number, UNIT);
+ ch->direction = (NV(number, CAPS) & PCM_CAP_INPUT) ?
+ INPUT : OUTPUT;
+ cap2str(ch->caps, sizeof(ch->caps), NV(number, CAPS));
+ ch->latency = NV(number, LATENCY);
+ ch->rate = NV(number, RATE);
+ fmt2str(ch->format, sizeof(ch->format), NV(number, FORMAT));
+ ch->pid = NV(number, PID);
+ strlcpy(ch->proc, NV(string, COMM), sizeof(ch->proc));
+ ch->interrupts = NV(number, INTR);
+ ch->xruns = NV(number, XRUNS);
+ ch->feedcount = NV(number, FEEDCNT);
+ ch->volume = NV(number, LEFTVOL) |
+ NV(number, RIGHTVOL) << 8;
+ fmt2str(ch->hwbuf.format, sizeof(ch->hwbuf.format),
+ NV(number, HWBUF_FORMAT));
+ ch->hwbuf.size_bytes = NV(number, HWBUF_SIZE);
+ ch->hwbuf.size_frames =
+ bytes2frames(ch->hwbuf.size_bytes, NV(number, HWBUF_FORMAT));
+ ch->hwbuf.blksz = NV(number, HWBUF_BLKSZ);
+ ch->hwbuf.blkcnt = NV(number, HWBUF_BLKCNT);
+ ch->hwbuf.free = NV(number, HWBUF_FREE);
+ ch->hwbuf.ready = NV(number, HWBUF_READY);
+ fmt2str(ch->swbuf.format, sizeof(ch->swbuf.format),
+ NV(number, SWBUF_FORMAT));
+ ch->swbuf.size_bytes = NV(number, SWBUF_SIZE);
+ ch->swbuf.size_frames =
+ bytes2frames(ch->swbuf.size_bytes, NV(number, SWBUF_FORMAT));
+ ch->swbuf.blksz = NV(number, SWBUF_BLKSZ);
+ ch->swbuf.blkcnt = NV(number, SWBUF_BLKCNT);
+ ch->swbuf.free = NV(number, SWBUF_FREE);
+ ch->swbuf.ready = NV(number, SWBUF_READY);
+ strlcpy(ch->feederchain, NV(string, FEEDERCHAIN),
+ sizeof(ch->feederchain));
+ ch->dev = dp;
+
+ caps |= NV(number, CAPS);
+ TAILQ_INSERT_TAIL(&dp->chans, ch, next);
+#undef NV
+ }
+ cap2str(dp->caps, sizeof(dp->caps), caps);
+
+done:
+ free(arg.buf);
+ nvlist_destroy(nvl);
+ close(fd);
+
+ return (dp);
+}
+
+static void
+free_dev(struct audio_dev *dp)
+{
+ struct audio_chan *ch;
+
+ while (!TAILQ_EMPTY(&dp->chans)) {
+ ch = TAILQ_FIRST(&dp->chans);
+ TAILQ_REMOVE(&dp->chans, ch, next);
+ free(ch);
+ }
+ free(dp);
+}
+
+static void
+print_dev_ctl(struct audio_dev *dp, struct audio_ctl *ctl, bool simple,
+ bool showgrp)
+{
+ struct audio_ctl *cp;
+ size_t len;
+
+ if (ctl->type != GRP) {
+ if (simple)
+ printf("%s=", ctl->name);
+ else
+ printf(" %-20s= ", ctl->name);
+ }
+
+ switch (ctl->type) {
+ case STR:
+ printf("%s\n", (char *)dp + ctl->off);
+ break;
+ case NUM:
+ printf("%d\n", *(int *)((intptr_t)dp + ctl->off));
+ break;
+ case VOL:
+ break;
+ case GRP:
+ if (!simple || !showgrp)
+ break;
+ for (cp = dev_ctls; cp->name != NULL; cp++) {
+ len = strlen(ctl->name);
+ if (strncmp(ctl->name, cp->name, len) == 0 &&
+ cp->name[len] == '.' && cp->type != GRP)
+ print_dev_ctl(dp, cp, simple, showgrp);
+ }
+ break;
+ }
+}
+
+static void
+print_chan_ctl(struct audio_chan *ch, struct audio_ctl *ctl, bool simple,
+ bool showgrp)
+{
+ struct audio_ctl *cp;
+ size_t len;
+ int v;
+
+ if (ctl->type != GRP) {
+ if (simple)
+ printf("%s.%s=", ch->name, ctl->name);
+ else
+ printf(" %-20s= ", ctl->name);
+ }
+
+ switch (ctl->type) {
+ case STR:
+ printf("%s\n", (char *)ch + ctl->off);
+ break;
+ case NUM:
+ printf("%d\n", *(int *)((intptr_t)ch + ctl->off));
+ break;
+ case VOL:
+ v = *(int *)((intptr_t)ch + ctl->off);
+ printf("%.2f:%.2f\n",
+ MIX_VOLNORM(v & 0x00ff), MIX_VOLNORM((v >> 8) & 0x00ff));
+ break;
+ case GRP:
+ if (!simple || !showgrp)
+ break;
+ for (cp = chan_ctls; cp->name != NULL; cp++) {
+ len = strlen(ctl->name);
+ if (strncmp(ctl->name, cp->name, len) == 0 &&
+ cp->name[len] == '.' && cp->type != GRP)
+ print_chan_ctl(ch, cp, simple, showgrp);
+ }
+ break;
+ }
+}
+
+static void
+print_dev(struct audio_dev *dp)
+{
+ struct audio_chan *ch;
+ struct audio_ctl *ctl;
+
+ if (!oflag) {
+ printf("%s: <%s> %s", dp->name, dp->desc, dp->status);
+
+ printf(" (");
+ if (dp->play.hwchans)
+ printf("play");
+ if (dp->play.hwchans && dp->rec.hwchans)
+ printf("/");
+ if (dp->rec.hwchans)
+ printf("rec");
+ printf(")\n");
+ }
+
+ for (ctl = dev_ctls; ctl->name != NULL; ctl++)
+ print_dev_ctl(dp, ctl, oflag, false);
+
+ if (vflag) {
+ TAILQ_FOREACH(ch, &dp->chans, next) {
+ if (!oflag)
+ printf(" ---\n");
+ for (ctl = chan_ctls; ctl->name != NULL; ctl++)
+ print_chan_ctl(ch, ctl, oflag, false);
+ }
+ }
+}
+
+static int
+sysctl_int(const char *buf, const char *arg, int *var)
+{
+ size_t size;
+ const char *val = arg;
+ int n, prev;
+
+ n = strtol(val, NULL, 10);
+ if (errno == EINVAL || errno == ERANGE) {
+ warn("strtol(%s)", val);
+ return (-1);
+ }
+
+ size = sizeof(int);
+ /* Read current value. */
+ if (sysctlbyname(buf, &prev, &size, NULL, 0) < 0) {
+ warn("sysctlbyname(%s)", buf);
+ return (-1);
+ }
+ /* Apply new value. */
+ if (sysctlbyname(buf, NULL, 0, &n, size) < 0) {
+ warn("sysctlbyname(%s, %d)", buf, n);
+ return (-1);
+ }
+ /* Read back applied value for good measure. */
+ if (sysctlbyname(buf, &n, &size, NULL, 0) < 0) {
+ warn("sysctlbyname(%s)", buf);
+ return (-1);
+ }
+
+ printf("%s: %d -> %d\n", buf, prev, n);
+ if (var != NULL)
+ *var = n;
+
+ return (0);
+}
+
+static int
+sysctl_str(const char *buf, const char *arg, char *var, size_t varsz)
+{
+ size_t size;
+ const char *val = arg;
+ char prev[BUFSIZ];
+ char *tmp;
+
+ /* Read current value. */
+ if (sysctlbyname(buf, prev, &size, NULL, 0) < 0) {
+ warn("sysctlbyname(%s)", buf);
+ return (-1);
+ }
+
+ size = strlen(val);
+ /* Apply new value. */
+ if (sysctlbyname(buf, NULL, 0, val, size) < 0) {
+ warn("sysctlbyname(%s, %s)", buf, val);
+ return (-1);
+ }
+ /* Get size of new string. */
+ if (sysctlbyname(buf, NULL, &size, NULL, 0) < 0) {
+ warn("sysctlbyname(%s)", buf);
+ return (-1);
+ }
+ if ((tmp = calloc(1, size)) == NULL)
+ err(1, "calloc");
+ /* Read back applied value for good measure. */
+ if (sysctlbyname(buf, tmp, &size, NULL, 0) < 0) {
+ warn("sysctlbyname(%s)", buf);
+ free(tmp);
+ return (-1);
+ }
+
+ printf("%s: %s -> %s\n", buf, prev, tmp);
+ if (var != NULL)
+ strlcpy(var, tmp, varsz);
+ free(tmp);
+
+ return (0);
+}
+
+static int
+mod_bitperfect(struct audio_dev *dp, void *arg)
+{
+ char buf[64];
+
+ if (dp->from_user)
+ return (-1);
+
+ snprintf(buf, sizeof(buf), "dev.pcm.%d.bitperfect", dp->unit);
+
+ return (sysctl_int(buf, arg, &dp->bitperfect));
+}
+
+static int
+mod_realtime(struct audio_dev *dp, void *arg)
+{
+ const char *val = arg;
+ int rc = -1;
+
+ if (dp->from_user)
+ return (-1);
+
+ if (strcmp(val, "0") == 0) {
+ /* XXX */
+ rc = sysctl_int("hw.snd.latency", "2", NULL) ||
+ sysctl_int("hw.snd.latency_profile", "1", NULL) ||
+ sysctl_int("kern.timecounter.alloweddeviation", "5", NULL);
+ if (rc == 0)
+ dp->realtime = 0;
+ } else if (strcmp(val, "1") == 0) {
+ rc = sysctl_int("hw.snd.latency", "0", NULL) ||
+ sysctl_int("hw.snd.latency_profile", "0", NULL) ||
+ sysctl_int("kern.timecounter.alloweddeviation", "0", NULL);
+ if (rc == 0)
+ dp->realtime = 1;
+ }
+
+ return (rc);
+}
+
+static int
+mod_play_rate(struct audio_dev *dp, void *arg)
+{
+ char buf[64];
+
+ if (dp->from_user)
+ return (-1);
+
+ /* We cannot modify the primary channels' rate at the moment. */
+ if (!dp->play.vchans)
+ return (0);
+
+ snprintf(buf, sizeof(buf), "dev.pcm.%d.play.vchanrate", dp->unit);
+
+ return (sysctl_int(buf, arg, &dp->play.rate));
+}
+
+static int
+mod_play_format(struct audio_dev *dp, void *arg)
+{
+ char buf[64];
+
+ if (dp->from_user)
+ return (-1);
+
+ /* We cannot modify the primary channels' format at the moment. */
+ if (!dp->play.vchans)
+ return (0);
+
+ snprintf(buf, sizeof(buf), "dev.pcm.%d.play.vchanformat", dp->unit);
+
+ return (sysctl_str(buf, arg, dp->play.format, sizeof(dp->play.format)));
+}
+
+static int
+mod_play_autoconv(struct audio_dev *dp, void *arg)
+{
+ const char *val = arg;
+ /* FIXME ugly */
+ char *zero = strdup("0");
+ char *one = strdup("1");
+ int rc = -1;
+
+ if (dp->from_user)
+ return (-1);
+
+ if (strcmp(val, zero) == 0)
+ rc = mod_play_vchans(dp, zero) || mod_bitperfect(dp, one);
+ else if (strcmp(val, one) == 0)
+ rc = mod_play_vchans(dp, one) || mod_bitperfect(dp, zero);
+
+ free(zero);
+ free(one);
+
+ return (rc);
+}
+
+static int
+mod_play_vchans(struct audio_dev *dp, void *arg)
+{
+ char buf[64];
+
+ if (dp->from_user)
+ return (-1);
+
+ snprintf(buf, sizeof(buf), "dev.pcm.%d.play.vchans", dp->unit);
+
+ return (sysctl_int(buf, arg, &dp->play.vchans));
+}
+
+static int
+mod_rec_rate(struct audio_dev *dp, void *arg)
+{
+ char buf[64];
+
+ if (dp->from_user)
+ return (-1);
+
+ /* We cannot modify the primary channels' rate at the moment. */
+ if (!dp->rec.vchans)
+ return (0);
+
+ snprintf(buf, sizeof(buf), "dev.pcm.%d.rec.vchanrate", dp->unit);
+
+ return (sysctl_int(buf, arg, &dp->rec.rate));
+}
+
+static int
+mod_rec_format(struct audio_dev *dp, void *arg)
+{
+ char buf[64];
+
+ if (dp->from_user)
+ return (-1);
+
+ /* We cannot modify the primary channels' format at the moment. */
+ if (!dp->rec.vchans)
+ return (0);
+
+ snprintf(buf, sizeof(buf), "dev.pcm.%d.rec.vchanformat", dp->unit);
+
+ return (sysctl_str(buf, arg, dp->rec.format, sizeof(dp->rec.format)));
+}
+
+static int
+mod_rec_autoconv(struct audio_dev *dp, void *arg)
+{
+ const char *val = arg;
+ /* FIXME ugly */
+ char *zero = strdup("0");
+ char *one = strdup("1");
+ int rc = -1;
+
+ if (dp->from_user)
+ return (-1);
+
+ if (strcmp(val, zero) == 0)
+ rc = mod_rec_vchans(dp, zero) || mod_bitperfect(dp, one);
+ else if (strcmp(val, one) == 0)
+ rc = mod_rec_vchans(dp, one) || mod_bitperfect(dp, zero);
+
+ free(zero);
+ free(one);
+
+ return (rc);
+}
+
+static int
+mod_rec_vchans(struct audio_dev *dp, void *arg)
+{
+ char buf[64];
+
+ if (dp->from_user)
+ return (-1);
+
+ snprintf(buf, sizeof(buf), "dev.pcm.%d.rec.vchans", dp->unit);
+
+ return (sysctl_int(buf, arg, &dp->rec.vchans));
+}
+
+static void __dead2
+usage(void)
+{
+ fprintf(stderr, "usage: %s [-f device] [-hov] [control[=value] ...]\n",
+ getprogname());
+ exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+ struct audio_dev *dp;
+ struct audio_chan *ch;
+ struct audio_ctl *ctl;
+ char *path = NULL;
+ char *s, *propstr;
+ bool show = true, found;
+ int c;
+
+ while ((c = getopt(argc, argv, "f:hov")) != -1) {
+ switch (c) {
+ case 'f':
+ path = optarg;
+ break;
+ case 'o':
+ oflag = true;
+ break;
+ case 'v':
+ vflag = true;
+ break;
+ case 'h': /* FALLTHROUGH */
+ case '?':
+ default:
+ usage();
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ dp = read_dev(path);
+
+ while (argc > 0) {
+ if ((s = strdup(*argv)) == NULL)
+ err(1, "strdup(%s)", *argv);
+
+ propstr = strsep(&s, "=");
+ if (propstr == NULL)
+ goto next;
+
+ found = false;
+ for (ctl = dev_ctls; ctl->name != NULL; ctl++) {
+ if (strcmp(ctl->name, propstr) != 0)
+ continue;
+ if (s == NULL) {
+ print_dev_ctl(dp, ctl, true, true);
+ show = false;
+ } else if (ctl->mod != NULL && ctl->mod(dp, s) < 0)
+ warnx("%s(%s) failed", ctl->name, s);
+ found = true;
+ break;
+ }
+ if (vflag) {
+ TAILQ_FOREACH(ch, &dp->chans, next) {
+ for (ctl = chan_ctls; ctl->name != NULL; ctl++) {
+ if (strcmp(ctl->name, propstr) != 0)
+ continue;
+ print_chan_ctl(ch, ctl, true, true);
+ show = false;
+ found = true;
+ break;
+ }
+ }
+ }
+ if (!found)
+ warnx("%s: no such property", propstr);
+next:
+ free(s);
+ argc--;
+ argv++;
+ }
+
+ /* XXX do we want this behavior? */
+ if (show)
+ print_dev(dp);
+ free_dev(dp);
+
+ return (0);
+}

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