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1.17 ! millert 1: /* $OpenBSD: mixerctl.c,v 1.16 2004/03/02 23:09:27 tedu Exp $ */
1.3 provos 2: /* $NetBSD: mixerctl.c,v 1.11 1998/04/27 16:55:23 augustss Exp $ */
1.1 provos 3:
4: /*
5: * Copyright (c) 1997 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * Author: Lennart Augustsson, with some code and ideas from Chuck Cranor.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the NetBSD
21: * Foundation, Inc. and its contributors.
22: * 4. Neither the name of The NetBSD Foundation nor the names of its
23: * contributors may be used to endorse or promote products derived
24: * from this software without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
1.9 pvalchev 38:
39: /*
40: * mixerctl(1) - a program to control audio mixing.
41: */
42:
1.1 provos 43: #include <stdio.h>
44: #include <stdlib.h>
45: #include <fcntl.h>
46: #include <err.h>
47: #include <unistd.h>
48: #include <string.h>
49: #include <sys/types.h>
50: #include <sys/ioctl.h>
51: #include <sys/audioio.h>
52:
1.7 millert 53: char *catstr(char *p, char *q);
54: struct field *findfield(char *name);
55: void prfield(struct field *p, char *sep, int prvalset);
56: int rdfield(struct field *p, char *q);
1.1 provos 57: int main(int argc, char **argv);
1.9 pvalchev 58: void usage(void);
1.1 provos 59:
60: FILE *out = stdout;
61:
62: struct field {
63: char *name;
64: mixer_ctrl_t *valp;
65: mixer_devinfo_t *infp;
66: } *fields, *rfields;
67:
68: mixer_ctrl_t *values;
69: mixer_devinfo_t *infos;
70:
71: char *
1.9 pvalchev 72: catstr(char *p, char *q)
1.1 provos 73: {
1.8 deraadt 74: int len;
75: char *r;
76:
77: len = strlen(p) + 1 + strlen(q) + 1;
1.9 pvalchev 78: if ((r = malloc(len)) == NULL)
79: err(1, "malloc()");
1.8 deraadt 80: strlcpy(r, p, len);
81: strlcat(r, ".", len);
82: strlcat(r, q, len);
1.9 pvalchev 83: return (r);
1.1 provos 84: }
85:
86: struct field *
1.9 pvalchev 87: findfield(char *name)
1.1 provos 88: {
89: int i;
90: for(i = 0; fields[i].name; i++)
91: if (strcmp(fields[i].name, name) == 0)
92: return &fields[i];
1.9 pvalchev 93: return (0);
1.1 provos 94: }
95:
96: void
1.9 pvalchev 97: prfield(struct field *p, char *sep, int prvalset)
1.1 provos 98: {
99: mixer_ctrl_t *m;
100: int i, n;
101:
102: if (sep)
103: fprintf(out, "%s%s", p->name, sep);
104: m = p->valp;
105: switch(m->type) {
106: case AUDIO_MIXER_ENUM:
107: for(i = 0; i < p->infp->un.e.num_mem; i++)
108: if (p->infp->un.e.member[i].ord == m->un.ord)
109: fprintf(out, "%s",
110: p->infp->un.e.member[i].label.name);
111: if (prvalset) {
112: fprintf(out, " [ ");
113: for(i = 0; i < p->infp->un.e.num_mem; i++)
114: fprintf(out, "%s ", p->infp->un.e.member[i].label.name);
115: fprintf(out, "]");
116: }
117: break;
118: case AUDIO_MIXER_SET:
119: for(n = i = 0; i < p->infp->un.s.num_mem; i++)
120: if (m->un.mask & p->infp->un.s.member[i].mask)
121: fprintf(out, "%s%s", n++ ? "," : "",
122: p->infp->un.s.member[i].label.name);
123: if (prvalset) {
124: fprintf(out, " { ");
125: for(i = 0; i < p->infp->un.s.num_mem; i++)
126: fprintf(out, "%s ", p->infp->un.s.member[i].label.name);
127: fprintf(out, "}");
128: }
129: break;
130: case AUDIO_MIXER_VALUE:
131: if (m->un.value.num_channels == 1)
132: fprintf(out, "%d", m->un.value.level[0]);
133: else
1.6 mickey 134: fprintf(out, "%d,%d", m->un.value.level[0],
1.1 provos 135: m->un.value.level[1]);
136: if (prvalset)
137: fprintf(out, " %s", p->infp->un.v.units.name);
138: break;
139: default:
140: errx(1, "Invalid format.");
141: }
142: }
143:
144: int
1.9 pvalchev 145: rdfield(struct field *p, char *q)
1.1 provos 146: {
147: mixer_ctrl_t *m;
148: int v, v0, v1, mask;
149: int i;
150: char *s;
151:
152: m = p->valp;
153: switch(m->type) {
154: case AUDIO_MIXER_ENUM:
155: for(i = 0; i < p->infp->un.e.num_mem; i++)
156: if (strcmp(p->infp->un.e.member[i].label.name, q) == 0)
157: break;
158: if (i < p->infp->un.e.num_mem)
159: m->un.ord = p->infp->un.e.member[i].ord;
1.9 pvalchev 160: else
161: errx(1, "Bad enum value %s", q);
1.1 provos 162: break;
163: case AUDIO_MIXER_SET:
164: mask = 0;
165: for(v = 0; q && *q; q = s) {
1.9 pvalchev 166: if (s = strchr(q, ','))
1.1 provos 167: *s++ = 0;
1.4 millert 168: for (i = 0; i < p->infp->un.s.num_mem; i++)
1.1 provos 169: if (strcmp(p->infp->un.s.member[i].label.name, q) == 0)
170: break;
1.9 pvalchev 171: if (i < p->infp->un.s.num_mem)
1.1 provos 172: mask |= p->infp->un.s.member[i].mask;
1.9 pvalchev 173: else
174: errx(1, "Bad set value %s", q);
1.1 provos 175: }
176: m->un.mask = mask;
177: break;
178: case AUDIO_MIXER_VALUE:
179: if (m->un.value.num_channels == 1) {
180: if (sscanf(q, "%d", &v) == 1) {
1.4 millert 181: switch (*q) {
182: case '+':
183: case '-':
184: m->un.value.level[0] += v;
185: break;
186: default:
187: m->un.value.level[0] = v;
188: break;
189: }
1.9 pvalchev 190: } else
191: errx(1, "Bad number %s", q);
1.1 provos 192: } else {
193: if (sscanf(q, "%d,%d", &v0, &v1) == 2) {
1.4 millert 194: switch (*q) {
195: case '+':
196: case '-':
197: m->un.value.level[0] += v0;
198: break;
199: default:
200: m->un.value.level[0] = v0;
201: break;
202: }
203: s = strchr(q, ',') + 1;
204: switch (*s) {
205: case '+':
206: case '-':
207: m->un.value.level[1] += v1;
208: break;
209: default:
210: m->un.value.level[1] = v1;
211: break;
212: }
1.1 provos 213: } else if (sscanf(q, "%d", &v) == 1) {
1.4 millert 214: switch (*q) {
215: case '+':
216: case '-':
217: m->un.value.level[0] += v;
218: m->un.value.level[1] += v;
219: break;
220: default:
1.9 pvalchev 221: m->un.value.level[0] = v;
222: m->un.value.level[1] = v;
1.4 millert 223: break;
224: }
1.9 pvalchev 225: } else
226: errx(1, "Bad numbers %s", q);
1.1 provos 227: }
228: break;
229: default:
230: errx(1, "Invalid format.");
231: }
1.9 pvalchev 232: return (1);
1.1 provos 233: }
234:
235: int
1.9 pvalchev 236: main(int argc, char **argv)
1.1 provos 237: {
238: int fd, i, j, ch, pos;
1.14 tedu 239: int aflag = 0, qflag = 0, vflag = 0;
1.3 provos 240: char *file;
1.1 provos 241: char *sep = "=";
242: mixer_devinfo_t dinfo;
243: mixer_ctrl_t val;
1.16 tedu 244: int ndev;
1.1 provos 245:
1.9 pvalchev 246: if ((file = getenv("MIXERDEVICE")) == 0 || *file == '\0')
247: file = "/dev/mixer";
1.1 provos 248:
1.10 jfb 249: while ((ch = getopt(argc, argv, "af:nqvw")) != -1) {
1.1 provos 250: switch(ch) {
251: case 'a':
252: aflag++;
253: break;
254: case 'w':
1.14 tedu 255: /* compat */
1.1 provos 256: break;
257: case 'v':
258: vflag++;
259: break;
260: case 'n':
261: sep = 0;
262: break;
263: case 'f':
264: file = optarg;
265: break;
1.10 jfb 266: case 'q':
267: qflag = 1;
268: break;
1.1 provos 269: case '?':
270: default:
1.9 pvalchev 271: usage();
1.1 provos 272: }
273: }
274: argc -= optind;
275: argv += optind;
1.6 mickey 276:
1.14 tedu 277: if ((fd = open(file, O_RDWR)) == -1)
278: if ((fd = open(file, O_RDONLY)) == -1)
279: err(1, "%s", file);
1.1 provos 280:
1.16 tedu 281: for(ndev = 0; ; ndev++) {
282: dinfo.index = ndev;
1.14 tedu 283: if (ioctl(fd, AUDIO_MIXER_DEVINFO, &dinfo) < 0)
284: break;
1.1 provos 285: }
1.5 mickey 286:
1.9 pvalchev 287: if (!ndev)
1.5 mickey 288: errx(1, "no mixer devices configured");
289:
1.9 pvalchev 290: if ((rfields = calloc(ndev, sizeof *rfields)) == NULL ||
291: (fields = calloc(ndev, sizeof *fields)) == NULL ||
292: (infos = calloc(ndev, sizeof *infos)) == NULL ||
293: (values = calloc(ndev, sizeof *values)) == NULL)
294: err(1, "calloc()");
1.1 provos 295:
296: for(i = 0; i < ndev; i++) {
297: infos[i].index = i;
1.17 ! millert 298: if (ioctl(fd, AUDIO_MIXER_DEVINFO, &infos[i]) < 0) {
! 299: ndev--, i--;
! 300: continue;
! 301: }
1.1 provos 302: }
303:
304: for(i = 0; i < ndev; i++) {
305: rfields[i].name = infos[i].label.name;
306: rfields[i].valp = &values[i];
307: rfields[i].infp = &infos[i];
308: }
309:
310: for(i = 0; i < ndev; i++) {
311: values[i].dev = i;
312: values[i].type = infos[i].type;
313: if (infos[i].type != AUDIO_MIXER_CLASS) {
314: values[i].un.value.num_channels = 2;
315: if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0) {
316: values[i].un.value.num_channels = 1;
317: if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0)
318: err(1, "AUDIO_MIXER_READ");
319: }
320: }
321: }
322:
323: for(j = i = 0; i < ndev; i++) {
324: if (infos[i].type != AUDIO_MIXER_CLASS &&
325: infos[i].type != -1) {
326: fields[j++] = rfields[i];
327: for(pos = infos[i].next; pos != AUDIO_MIXER_LAST;
328: pos = infos[pos].next) {
329: fields[j] = rfields[pos];
1.6 mickey 330: fields[j].name = catstr(rfields[i].name,
1.1 provos 331: infos[pos].label.name);
332: infos[pos].type = -1;
333: j++;
334: }
335: }
336: }
337:
338: for(i = 0; i < j; i++) {
339: int cls = fields[i].infp->mixer_class;
340: if (cls >= 0 && cls < ndev)
1.6 mickey 341: fields[i].name = catstr(infos[cls].label.name,
1.1 provos 342: fields[i].name);
343: }
344:
1.14 tedu 345: if (!argc && aflag) {
1.1 provos 346: for(i = 0; fields[i].name; i++) {
347: prfield(&fields[i], sep, vflag);
348: fprintf(out, "\n");
349: }
350: } else if (argc > 0 && !aflag) {
351: struct field *p;
1.14 tedu 352:
353: while(argc--) {
354: char *q;
355:
356: if (q = strchr(*argv, '=')) {
357: *q++ = 0;
358: p = findfield(*argv);
359: if (p == NULL)
360: warnx("field %s does not exist", *argv);
361: else {
362: val = *p->valp;
363: if (rdfield(p, q)) {
364: if (ioctl(fd, AUDIO_MIXER_WRITE, p->valp) < 0)
365: warn("AUDIO_MIXER_WRITE");
366: else if (sep && !qflag) {
367: *p->valp = val;
368: prfield(p, ": ", 0);
369: ioctl(fd, AUDIO_MIXER_READ, p->valp);
370: printf(" -> ");
371: prfield(p, 0, 0);
372: printf("\n");
1.1 provos 373: }
374: }
1.14 tedu 375: }
376: } else {
1.1 provos 377: p = findfield(*argv);
1.15 vincent 378: if (p == NULL)
379: warnx("field %s does not exist", *argv);
380: else {
381: prfield(p, sep, vflag);
382: fprintf(out, "\n");
383: }
1.1 provos 384: }
1.17 ! millert 385: argv++;
1.1 provos 386: }
387: } else
1.9 pvalchev 388: usage();
1.1 provos 389: exit(0);
1.9 pvalchev 390: }
391:
392: void
393: usage(void)
394: {
395: extern char *__progname; /* from crt0.o */
396:
397: fprintf(stderr,
1.13 jmc 398: "usage: %s [-nv] [-f file] -a\n"
399: " %s [-nv] [-f file] name [...]\n"
1.14 tedu 400: " %s [-q] [-f file] name=value [...]\n",
1.11 jsyn 401: __progname, __progname, __progname);
1.9 pvalchev 402:
403: exit(1);
1.1 provos 404: }