NetBSD/usr.bin/mixerctl/mixerctl.c

343 lines
8.2 KiB
C

/* $NetBSD: mixerctl.c,v 1.4 1997/05/23 17:55:29 augustss Exp $ */
/*
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* Author: Lennart Augustsson, with some code and ideas from 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 REGENTS 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 <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>
FILE *out = stdout;
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;
char *
catstr(char *p, char *q)
{
char *r = malloc(strlen(p) + strlen(q) + 2);
strcpy(r, p);
strcat(r, ".");
strcat(r, q);
return r;
}
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;
}
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]);
break;
default:
errx(1, "Invalid format.");
}
}
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;
}
void
main(int argc, char **argv)
{
int fd, r, i, j, ch, pos;
int aflag = 0, wflag = 0, vflag = 0;
char *file = "/dev/mixer";
char *sep = "=";
mixer_devinfo_t dinfo;
mixer_ctrl_t val;
int ndev;
prog = *argv;
while ((ch = getopt(argc, argv, "af:nvw")) != -1) {
switch(ch) {
case 'a':
aflag++;
break;
case 'w':
wflag++;
break;
case 'v':
vflag++;
break;
case 'n':
sep = 0;
break;
case 'f':
file = optarg;
break;
case '?':
default:
usage:
fprintf(out, "%s [-f file] [-v] [-n] name ...\n", prog);
fprintf(out, "%s [-f file] [-v] [-n] -w name=value ...\n", prog);
fprintf(out, "%s [-f file] [-v] [-n] -a\n", prog);
exit(0);
}
}
argc -= optind;
argv += optind;
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++) {
if (infos[i].mixer_class >= 0 && infos[i].mixer_class < ndev)
rfields[i].name = catstr(infos[infos[i].mixer_class].label.name,
infos[i].label.name);
else
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, NULL);
}
}
}
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++;
}
}
}
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) {
struct field *p;
if (wflag) {
while(argc--) {
char *q;
q = strchr(*argv, '=');
if (q) {
*q++ = 0;
p = findfield(*argv);
if (p == 0)
warnx("field %s does not exist", *argv);
else {
val = *p->valp;
if (rdfield(p, q)) {
if (ioctl(fd, AUDIO_MIXER_WRITE, p->valp) < 0)
warn(NULL);
else if (sep) {
*p->valp = val;
prfield(p, ": ", 0);
ioctl(fd, AUDIO_MIXER_READ, p->valp);
printf(" -> ");
prfield(p, 0, 0);
printf("\n");
}
}
}
} else {
warnx("No `=' in %s", *argv);
}
argv++;
}
} else {
while(argc--) {
p = findfield(*argv);
if (p == 0)
warnx("field %s does not exist", *argv);
else
prfield(p, sep, vflag), fprintf(out, "\n");
argv++;
}
}
} else
goto usage;
exit(0);
}