Annotation of src/usr.bin/mixerctl/mixerctl.c, Revision 1.28
1.28 ! ray 1: /* $OpenBSD: mixerctl.c,v 1.27 2008/01/13 21:26:01 ratchov 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: *
19: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
30: */
1.9 pvalchev 31:
32: /*
33: * mixerctl(1) - a program to control audio mixing.
34: */
35:
1.19 otto 36: #include <sys/types.h>
37: #include <sys/ioctl.h>
38: #include <sys/audioio.h>
39:
40: #include <err.h>
1.20 millert 41: #include <errno.h>
1.19 otto 42: #include <fcntl.h>
1.20 millert 43: #include <limits.h>
1.1 provos 44: #include <stdio.h>
45: #include <stdlib.h>
1.19 otto 46: #include <string.h>
1.1 provos 47: #include <unistd.h>
48:
1.20 millert 49: struct field *findfield(char *);
50: void adjlevel(char **, u_char *, int);
1.19 otto 51: void catstr(char *, char *, char *);
52: void prfield(struct field *, char *, int);
1.21 millert 53: void rdfield(int, struct field *, char *, int);
1.19 otto 54: __dead void usage(void);
1.1 provos 55:
1.19 otto 56: #define FIELD_NAME_MAX 64
1.1 provos 57:
58: struct field {
1.19 otto 59: char name[FIELD_NAME_MAX];
1.1 provos 60: mixer_ctrl_t *valp;
61: mixer_devinfo_t *infp;
62: } *fields, *rfields;
63:
64: mixer_ctrl_t *values;
65: mixer_devinfo_t *infos;
66:
1.19 otto 67: void
68: catstr(char *p, char *q, char *out)
1.1 provos 69: {
1.19 otto 70: char tmp[FIELD_NAME_MAX];
1.8 deraadt 71:
1.19 otto 72: snprintf(tmp, FIELD_NAME_MAX, "%s.%s", p, q);
73: strlcpy(out, tmp, FIELD_NAME_MAX);
1.1 provos 74: }
75:
76: struct field *
1.9 pvalchev 77: findfield(char *name)
1.1 provos 78: {
79: int i;
1.19 otto 80: for (i = 0; fields[i].name[0] != '\0'; i++)
1.1 provos 81: if (strcmp(fields[i].name, name) == 0)
82: return &fields[i];
1.9 pvalchev 83: return (0);
1.1 provos 84: }
85:
1.19 otto 86: #define e_member_name un.e.member[i].label.name
87: #define s_member_name un.s.member[i].label.name
88:
1.1 provos 89: void
1.9 pvalchev 90: prfield(struct field *p, char *sep, int prvalset)
1.1 provos 91: {
92: mixer_ctrl_t *m;
93: int i, n;
94:
95: if (sep)
1.19 otto 96: printf("%s%s", p->name, sep);
1.1 provos 97: m = p->valp;
1.19 otto 98: switch (m->type) {
1.1 provos 99: case AUDIO_MIXER_ENUM:
1.18 millert 100: for (i = 0; i < p->infp->un.e.num_mem; i++)
1.1 provos 101: if (p->infp->un.e.member[i].ord == m->un.ord)
1.19 otto 102: printf("%s",
103: p->infp->e_member_name);
1.1 provos 104: if (prvalset) {
1.19 otto 105: printf(" [ ");
1.18 millert 106: for (i = 0; i < p->infp->un.e.num_mem; i++)
1.19 otto 107: printf("%s ", p->infp->e_member_name);
108: printf("]");
1.1 provos 109: }
110: break;
111: case AUDIO_MIXER_SET:
1.18 millert 112: for (n = i = 0; i < p->infp->un.s.num_mem; i++)
1.1 provos 113: if (m->un.mask & p->infp->un.s.member[i].mask)
1.19 otto 114: printf("%s%s", n++ ? "," : "",
115: p->infp->s_member_name);
1.1 provos 116: if (prvalset) {
1.19 otto 117: printf(" { ");
1.18 millert 118: for (i = 0; i < p->infp->un.s.num_mem; i++)
1.19 otto 119: printf("%s ", p->infp->s_member_name);
120: printf("}");
1.1 provos 121: }
122: break;
123: case AUDIO_MIXER_VALUE:
124: if (m->un.value.num_channels == 1)
1.19 otto 125: printf("%d", m->un.value.level[0]);
1.1 provos 126: else
1.19 otto 127: printf("%d,%d", m->un.value.level[0],
1.22 deraadt 128: m->un.value.level[1]);
1.1 provos 129: if (prvalset)
1.19 otto 130: printf(" %s", p->infp->un.v.units.name);
1.1 provos 131: break;
132: default:
133: errx(1, "Invalid format.");
134: }
135: }
136:
1.19 otto 137: void
1.20 millert 138: adjlevel(char **p, u_char *olevel, int more)
139: {
140: char *ep, *cp = *p;
141: long inc;
142: u_char level;
143:
144: if (*cp != '+' && *cp != '-')
145: *olevel = 0; /* absolute setting */
146:
147: errno = 0;
148: inc = strtol(cp, &ep, 10);
149: if (*cp == '\0' || (*ep != '\0' && *ep != ',') ||
150: (errno == ERANGE && (inc == LONG_MAX || inc == LONG_MIN)))
151: errx(1, "Bad number %s", cp);
152: if (*ep == ',' && !more)
153: errx(1, "Too many values");
154: *p = ep;
155:
156: if (inc < AUDIO_MIN_GAIN - *olevel)
157: level = AUDIO_MIN_GAIN;
158: else if (inc > AUDIO_MAX_GAIN - *olevel)
159: level = AUDIO_MAX_GAIN;
160: else
161: level = *olevel + inc;
162: *olevel = level;
163: }
164:
165: void
1.21 millert 166: rdfield(int fd, struct field *p, char *q, int quiet)
1.1 provos 167: {
1.19 otto 168: mixer_ctrl_t *m, oldval;
1.20 millert 169: int i, mask;
1.1 provos 170: char *s;
171:
1.19 otto 172: oldval = *p->valp;
1.1 provos 173: m = p->valp;
1.19 otto 174:
175: switch (m->type) {
1.1 provos 176: case AUDIO_MIXER_ENUM:
1.22 deraadt 177: if (strcmp(q, "toggle") == 0) {
178: for (i = 0; i < p->infp->un.e.num_mem; i++) {
179: if (m->un.ord == p->infp->un.e.member[i].ord)
180: break;
181: }
182: if (i < p->infp->un.e.num_mem)
183: i++;
184: else
185: i = 0;
186: m->un.ord = p->infp->un.e.member[i].ord;
187: break;
188: }
1.18 millert 189: for (i = 0; i < p->infp->un.e.num_mem; i++)
1.19 otto 190: if (strcmp(p->infp->e_member_name, q) == 0)
1.1 provos 191: break;
192: if (i < p->infp->un.e.num_mem)
193: m->un.ord = p->infp->un.e.member[i].ord;
1.9 pvalchev 194: else
1.22 deraadt 195: errx(1, "Bad enum value %s", q);
1.1 provos 196: break;
197: case AUDIO_MIXER_SET:
198: mask = 0;
1.20 millert 199: for (; q && *q; q = s) {
1.19 otto 200: if ((s = strchr(q, ',')) != NULL)
1.1 provos 201: *s++ = 0;
1.4 millert 202: for (i = 0; i < p->infp->un.s.num_mem; i++)
1.19 otto 203: if (strcmp(p->infp->s_member_name, q) == 0)
1.1 provos 204: break;
1.9 pvalchev 205: if (i < p->infp->un.s.num_mem)
1.1 provos 206: mask |= p->infp->un.s.member[i].mask;
1.9 pvalchev 207: else
1.22 deraadt 208: errx(1, "Bad set value %s", q);
1.1 provos 209: }
210: m->un.mask = mask;
211: break;
212: case AUDIO_MIXER_VALUE:
213: if (m->un.value.num_channels == 1) {
1.20 millert 214: adjlevel(&q, &m->un.value.level[0], 0);
1.1 provos 215: } else {
1.20 millert 216: adjlevel(&q, &m->un.value.level[0], 1);
217: if (*q++ == ',')
218: adjlevel(&q, &m->un.value.level[1], 0);
219: else
220: m->un.value.level[1] = m->un.value.level[0];
1.1 provos 221: }
222: break;
223: default:
224: errx(1, "Invalid format.");
225: }
1.19 otto 226:
227: if (ioctl(fd, AUDIO_MIXER_WRITE, p->valp) < 0) {
228: warn("AUDIO_MIXER_WRITE");
1.21 millert 229: } else if (!quiet) {
1.19 otto 230: *p->valp = oldval;
231: prfield(p, ": ", 0);
232: if (ioctl(fd, AUDIO_MIXER_READ, p->valp) < 0) {
233: warn("AUDIO_MIXER_READ");
234: } else {
235: printf(" -> ");
236: prfield(p, NULL, 0);
237: printf("\n");
238: }
239: }
1.1 provos 240: }
241:
242: int
1.9 pvalchev 243: main(int argc, char **argv)
1.1 provos 244: {
245: int fd, i, j, ch, pos;
1.22 deraadt 246: int aflag = 0, qflag = 0, vflag = 0, tflag = 0;
1.3 provos 247: char *file;
1.1 provos 248: char *sep = "=";
249: mixer_devinfo_t dinfo;
1.16 tedu 250: int ndev;
1.1 provos 251:
1.9 pvalchev 252: if ((file = getenv("MIXERDEVICE")) == 0 || *file == '\0')
1.22 deraadt 253: file = "/dev/mixer";
1.1 provos 254:
1.22 deraadt 255: while ((ch = getopt(argc, argv, "af:nqtvw")) != -1) {
1.25 sobrado 256: switch (ch) {
1.1 provos 257: case 'a':
258: aflag++;
259: break;
260: case 'w':
1.14 tedu 261: /* compat */
1.1 provos 262: break;
263: case 'v':
264: vflag++;
265: break;
266: case 'n':
267: sep = 0;
268: break;
269: case 'f':
270: file = optarg;
271: break;
1.10 jfb 272: case 'q':
273: qflag = 1;
274: break;
1.22 deraadt 275: case 't':
276: tflag = 1;
277: break;
1.1 provos 278: default:
1.9 pvalchev 279: usage();
1.1 provos 280: }
281: }
282: argc -= optind;
283: argv += optind;
1.6 mickey 284:
1.26 deraadt 285: if (argc == 0 && tflag == 0)
286: aflag++;
287:
1.14 tedu 288: if ((fd = open(file, O_RDWR)) == -1)
289: if ((fd = open(file, O_RDONLY)) == -1)
290: err(1, "%s", file);
1.1 provos 291:
1.18 millert 292: for (ndev = 0; ; ndev++) {
1.16 tedu 293: dinfo.index = ndev;
1.14 tedu 294: if (ioctl(fd, AUDIO_MIXER_DEVINFO, &dinfo) < 0)
295: break;
1.1 provos 296: }
1.5 mickey 297:
1.9 pvalchev 298: if (!ndev)
1.5 mickey 299: errx(1, "no mixer devices configured");
300:
1.9 pvalchev 301: if ((rfields = calloc(ndev, sizeof *rfields)) == NULL ||
302: (fields = calloc(ndev, sizeof *fields)) == NULL ||
303: (infos = calloc(ndev, sizeof *infos)) == NULL ||
304: (values = calloc(ndev, sizeof *values)) == NULL)
305: err(1, "calloc()");
1.1 provos 306:
1.18 millert 307: for (i = 0; i < ndev; i++) {
1.1 provos 308: infos[i].index = i;
1.17 millert 309: if (ioctl(fd, AUDIO_MIXER_DEVINFO, &infos[i]) < 0) {
1.19 otto 310: ndev--;
311: i--;
1.17 millert 312: continue;
313: }
1.1 provos 314: }
315:
1.18 millert 316: for (i = 0; i < ndev; i++) {
1.19 otto 317: strlcpy(rfields[i].name, infos[i].label.name, FIELD_NAME_MAX);
1.1 provos 318: rfields[i].valp = &values[i];
319: rfields[i].infp = &infos[i];
320: }
321:
1.18 millert 322: for (i = 0; i < ndev; i++) {
1.1 provos 323: values[i].dev = i;
324: values[i].type = infos[i].type;
325: if (infos[i].type != AUDIO_MIXER_CLASS) {
326: values[i].un.value.num_channels = 2;
327: if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0) {
328: values[i].un.value.num_channels = 1;
329: if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0)
330: err(1, "AUDIO_MIXER_READ");
331: }
332: }
333: }
334:
1.18 millert 335: for (j = i = 0; i < ndev; i++) {
1.1 provos 336: if (infos[i].type != AUDIO_MIXER_CLASS &&
1.27 ratchov 337: infos[i].prev == AUDIO_MIXER_LAST) {
1.1 provos 338: fields[j++] = rfields[i];
1.18 millert 339: for (pos = infos[i].next; pos != AUDIO_MIXER_LAST;
1.1 provos 340: pos = infos[pos].next) {
341: fields[j] = rfields[pos];
1.19 otto 342: catstr(rfields[i].name, infos[pos].label.name,
343: fields[j].name);
1.1 provos 344: j++;
345: }
346: }
347: }
348:
1.18 millert 349: for (i = 0; i < j; i++) {
1.1 provos 350: int cls = fields[i].infp->mixer_class;
351: if (cls >= 0 && cls < ndev)
1.19 otto 352: catstr(infos[cls].label.name, fields[i].name,
353: fields[i].name);
1.1 provos 354: }
355:
1.14 tedu 356: if (!argc && aflag) {
1.19 otto 357: for (i = 0; fields[i].name[0] != '\0'; i++) {
1.1 provos 358: prfield(&fields[i], sep, vflag);
1.19 otto 359: printf("\n");
1.1 provos 360: }
361: } else if (argc > 0 && !aflag) {
362: struct field *p;
1.14 tedu 363:
1.19 otto 364: while (argc--) {
1.14 tedu 365: char *q;
366:
1.19 otto 367: ch = 0;
368: if ((q = strchr(*argv, '=')) != NULL) {
369: *q++ = '\0';
370: ch = 1;
371: }
372:
373: if ((p = findfield(*argv)) == NULL) {
374: warnx("field %s does not exist", *argv);
1.22 deraadt 375: } else if (ch || tflag) {
376: if (tflag && q == NULL)
377: q = "toggle";
1.21 millert 378: rdfield(fd, p, q, qflag);
1.14 tedu 379: } else {
1.19 otto 380: prfield(p, sep, vflag);
381: printf("\n");
1.1 provos 382: }
1.19 otto 383:
1.17 millert 384: argv++;
1.1 provos 385: }
386: } else
1.9 pvalchev 387: usage();
1.1 provos 388: exit(0);
1.9 pvalchev 389: }
390:
1.19 otto 391: __dead void
1.9 pvalchev 392: usage(void)
393: {
394: extern char *__progname; /* from crt0.o */
395:
396: fprintf(stderr,
1.26 deraadt 397: "usage: %s [-anv] [-f file]\n"
1.24 sobrado 398: " %s [-nv] [-f file] name ...\n"
399: " %s [-qt] [-f file] name ...\n"
1.25 sobrado 400: " %s [-q] [-f file] name=value ...\n",
1.23 deraadt 401: __progname, __progname, __progname, __progname);
1.9 pvalchev 402:
403: exit(1);
1.1 provos 404: }
![[BACK]](/icons/back.gif){kind=icon}
Return to mixerctl.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / mixerctl