NetBSD/usr.bin/mixerctl/mixerctl.c

446 lines
10 KiB
C

/* $NetBSD: mixerctl.c,v 1.20 2003/07/26 20:34:14 salo Exp $ */
/*
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (augustss@NetBSD.org) and Chuck Cranor.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: mixerctl.c,v 1.20 2003/07/26 20:34:14 salo Exp $");
#endif
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <err.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/audioio.h>
#include <paths.h>
FILE *out = stdout;
int vflag = 0;
char *prog;
struct field {
char *name;
mixer_ctrl_t *valp;
mixer_devinfo_t *infp;
char changed;
} *fields, *rfields;
mixer_ctrl_t *values;
mixer_devinfo_t *infos;
static char *
catstr(char *p, char *q)
{
char *r;
asprintf(&r, "%s.%s", p, q);
if (!r)
err(1, "malloc");
return r;
}
static struct field *
findfield(char *name)
{
int i;
for(i = 0; fields[i].name; i++)
if (strcmp(fields[i].name, name) == 0)
return &fields[i];
return 0;
}
static void
prfield(struct field *p, char *sep, int prvalset)
{
mixer_ctrl_t *m;
int i, n;
if (sep)
fprintf(out, "%s%s", p->name, sep);
m = p->valp;
switch(m->type) {
case AUDIO_MIXER_ENUM:
for(i = 0; i < p->infp->un.e.num_mem; i++)
if (p->infp->un.e.member[i].ord == m->un.ord)
fprintf(out, "%s",
p->infp->un.e.member[i].label.name);
if (prvalset) {
fprintf(out, " [ ");
for(i = 0; i < p->infp->un.e.num_mem; i++)
fprintf(out, "%s ",
p->infp->un.e.member[i].label.name);
fprintf(out, "]");
}
break;
case AUDIO_MIXER_SET:
for(n = i = 0; i < p->infp->un.s.num_mem; i++)
if (m->un.mask & p->infp->un.s.member[i].mask)
fprintf(out, "%s%s", n++ ? "," : "",
p->infp->un.s.member[i].label.name);
if (prvalset) {
fprintf(out, " { ");
for(i = 0; i < p->infp->un.s.num_mem; i++)
fprintf(out, "%s ",
p->infp->un.s.member[i].label.name);
fprintf(out, "}");
}
break;
case AUDIO_MIXER_VALUE:
if (m->un.value.num_channels == 1)
fprintf(out, "%d", m->un.value.level[0]);
else
fprintf(out, "%d,%d", m->un.value.level[0],
m->un.value.level[1]);
if (prvalset) {
fprintf(out, " %s", p->infp->un.v.units.name);
if (p->infp->un.v.delta)
fprintf(out, " delta=%d", p->infp->un.v.delta);
}
break;
default:
printf("\n");
errx(1, "Invalid format.");
}
}
static int
rdfield(struct field *p, char *q)
{
mixer_ctrl_t *m;
int v, v0, v1, mask;
int i;
char *s;
m = p->valp;
switch(m->type) {
case AUDIO_MIXER_ENUM:
for(i = 0; i < p->infp->un.e.num_mem; i++)
if (strcmp(p->infp->un.e.member[i].label.name, q) == 0)
break;
if (i < p->infp->un.e.num_mem)
m->un.ord = p->infp->un.e.member[i].ord;
else {
warnx("Bad enum value %s", q);
return 0;
}
break;
case AUDIO_MIXER_SET:
mask = 0;
for(v = 0; q && *q; q = s) {
s = strchr(q, ',');
if (s)
*s++ = 0;
for(i = 0; i < p->infp->un.s.num_mem; i++)
if (strcmp(p->infp->un.s.member[i].label.name,
q) == 0)
break;
if (i < p->infp->un.s.num_mem) {
mask |= p->infp->un.s.member[i].mask;
} else {
warnx("Bad set value %s", q);
return 0;
}
}
m->un.mask = mask;
break;
case AUDIO_MIXER_VALUE:
if (m->un.value.num_channels == 1) {
if (sscanf(q, "%d", &v) == 1) {
m->un.value.level[0] = v;
} else {
warnx("Bad number %s", q);
return 0;
}
} else {
if (sscanf(q, "%d,%d", &v0, &v1) == 2) {
m->un.value.level[0] = v0;
m->un.value.level[1] = v1;
} else if (sscanf(q, "%d", &v) == 1) {
m->un.value.level[0] = m->un.value.level[1] = v;
} else {
warnx("Bad numbers %s", q);
return 0;
}
}
break;
default:
errx(1, "Invalid format.");
}
p->changed = 1;
return 1;
}
static int
incfield(struct field *p, int inc)
{
mixer_ctrl_t *m;
int i, v;
m = p->valp;
switch(m->type) {
case AUDIO_MIXER_ENUM:
m->un.ord += inc;
if (m->un.ord < 0)
m->un.ord = p->infp->un.e.num_mem-1;
if (m->un.ord >= p->infp->un.e.num_mem)
m->un.ord = 0;
break;
case AUDIO_MIXER_SET:
m->un.mask += inc;
if (m->un.mask < 0)
m->un.mask = (1 << p->infp->un.s.num_mem) - 1;
if (m->un.mask >= (1 << p->infp->un.s.num_mem))
m->un.mask = 0;
warnx("Can't ++/-- %s", p->name);
return 0;
case AUDIO_MIXER_VALUE:
if (p->infp->un.v.delta)
inc *= p->infp->un.v.delta;
for (i = 0; i < m->un.value.num_channels; i++) {
v = m->un.value.level[i];
v += inc;
if (v < AUDIO_MIN_GAIN)
v = AUDIO_MIN_GAIN;
if (v > AUDIO_MAX_GAIN)
v = AUDIO_MAX_GAIN;
m->un.value.level[i] = v;
}
break;
default:
errx(1, "Invalid format.");
}
p->changed = 1;
return 1;
}
static void
wrarg(int fd, char *arg, char *sep)
{
char *q;
struct field *p;
mixer_ctrl_t val;
int incdec, r;
q = strchr(arg, '=');
if (q == NULL) {
int l = strlen(arg);
incdec = 0;
if (l > 2 && arg[l-2] == '+' && arg[l-1] == '+')
incdec = 1;
else if (l > 2 && arg[l-2] == '-' && arg[l-1] == '-')
incdec = -1;
else {
warnx("No `=' in %s", arg);
return;
}
arg[l-2] = 0;
} else
*q++ = 0;
p = findfield(arg);
if (p == NULL) {
warnx("field %s does not exist", arg);
return;
}
val = *p->valp;
if (q != NULL)
r = rdfield(p, q);
else
r = incfield(p, incdec);
if (r) {
if (ioctl(fd, AUDIO_MIXER_WRITE, p->valp) < 0)
warn("AUDIO_MIXER_WRITE");
else if (sep) {
*p->valp = val;
prfield(p, ": ", 0);
ioctl(fd, AUDIO_MIXER_READ, p->valp);
printf(" -> ");
prfield(p, 0, 0);
printf("\n");
}
}
}
static void
prarg(int fd, char *arg, char *sep)
{
struct field *p;
p = findfield(arg);
if (p == NULL)
warnx("field %s does not exist", arg);
else
prfield(p, sep, vflag), fprintf(out, "\n");
}
int
main(int argc, char **argv)
{
int fd, i, j, ch, pos;
int aflag = 0, wflag = 0;
char *file;
char *sep = "=";
mixer_devinfo_t dinfo;
int ndev;
file = getenv("MIXERDEVICE");
if (file == NULL)
file = _PATH_MIXER;
prog = *argv;
while ((ch = getopt(argc, argv, "ad:f:nvw")) != -1) {
switch(ch) {
case 'a':
aflag++;
break;
case 'w':
wflag++;
break;
case 'v':
vflag++;
break;
case 'n':
sep = 0;
break;
case 'f': /* compatibility */
case 'd':
file = optarg;
break;
case '?':
default:
usage:
fprintf(out, "%s [-d file] [-v] [-n] name ...\n", prog);
fprintf(out, "%s [-d file] [-v] [-n] -w name=value ...\n",prog);
fprintf(out, "%s [-d file] [-v] [-n] -a\n", prog);
exit(0);
}
}
argc -= optind;
argv += optind;
fd = open(file, O_RDWR);
/* Try with mixer0. */
if (fd < 0 && file == _PATH_MIXER) {
file = _PATH_MIXER0;
fd = open(file, O_RDWR);
}
if (fd < 0)
err(1, "%s", file);
for(ndev = 0; ; ndev++) {
dinfo.index = ndev;
if (ioctl(fd, AUDIO_MIXER_DEVINFO, &dinfo) < 0)
break;
}
rfields = calloc(ndev, sizeof *rfields);
fields = calloc(ndev, sizeof *fields);
infos = calloc(ndev, sizeof *infos);
values = calloc(ndev, sizeof *values);
for(i = 0; i < ndev; i++) {
infos[i].index = i;
ioctl(fd, AUDIO_MIXER_DEVINFO, &infos[i]);
}
for(i = 0; i < ndev; i++) {
rfields[i].name = infos[i].label.name;
rfields[i].valp = &values[i];
rfields[i].infp = &infos[i];
}
for(i = 0; i < ndev; i++) {
values[i].dev = i;
values[i].type = infos[i].type;
if (infos[i].type != AUDIO_MIXER_CLASS) {
values[i].un.value.num_channels = 2;
if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0) {
values[i].un.value.num_channels = 1;
if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0)
err(1, "AUDIO_MIXER_READ");
}
}
}
for(j = i = 0; i < ndev; i++) {
if (infos[i].type != AUDIO_MIXER_CLASS &&
infos[i].type != -1) {
fields[j++] = rfields[i];
for(pos = infos[i].next; pos != AUDIO_MIXER_LAST;
pos = infos[pos].next) {
fields[j] = rfields[pos];
fields[j].name = catstr(rfields[i].name,
infos[pos].label.name);
infos[pos].type = -1;
j++;
}
}
}
for(i = 0; i < j; i++) {
int cls = fields[i].infp->mixer_class;
if (cls >= 0 && cls < ndev)
fields[i].name = catstr(infos[cls].label.name,
fields[i].name);
}
if (argc == 0 && aflag && !wflag) {
for(i = 0; fields[i].name; i++) {
prfield(&fields[i], sep, vflag);
fprintf(out, "\n");
}
} else if (argc > 0 && !aflag) {
while(argc--) {
if (wflag)
wrarg(fd, *argv, sep);
else
prarg(fd, *argv, sep);
argv++;
}
} else
goto usage;
exit(0);
}