1 /* $NetBSD: mixerctl.c,v 1.4 1997/05/23 17:55:29 augustss Exp $ */ 2 3 /* 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Author: Lennart Augustsson, with some code and ideas from Chuck Cranor. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE 29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <fcntl.h> 40 #include <err.h> 41 #include <unistd.h> 42 #include <string.h> 43 #include <sys/types.h> 44 #include <sys/ioctl.h> 45 #include <sys/audioio.h> 46 47 FILE *out = stdout; 48 49 char *prog; 50 51 struct field { 52 char *name; 53 mixer_ctrl_t *valp; 54 mixer_devinfo_t *infp; 55 char changed; 56 } *fields, *rfields; 57 58 mixer_ctrl_t *values; 59 mixer_devinfo_t *infos; 60 61 char * 62 catstr(char *p, char *q) 63 { 64 char *r = malloc(strlen(p) + strlen(q) + 2); 65 strcpy(r, p); 66 strcat(r, "."); 67 strcat(r, q); 68 return r; 69 } 70 71 struct field * 72 findfield(char *name) 73 { 74 int i; 75 for(i = 0; fields[i].name; i++) 76 if (strcmp(fields[i].name, name) == 0) 77 return &fields[i]; 78 return 0; 79 } 80 81 void 82 prfield(struct field *p, char *sep, int prvalset) 83 { 84 mixer_ctrl_t *m; 85 int i, n; 86 87 if (sep) 88 fprintf(out, "%s%s", p->name, sep); 89 m = p->valp; 90 switch(m->type) { 91 case AUDIO_MIXER_ENUM: 92 for(i = 0; i < p->infp->un.e.num_mem; i++) 93 if (p->infp->un.e.member[i].ord == m->un.ord) 94 fprintf(out, "%s", 95 p->infp->un.e.member[i].label.name); 96 if (prvalset) { 97 fprintf(out, " [ "); 98 for(i = 0; i < p->infp->un.e.num_mem; i++) 99 fprintf(out, "%s ", p->infp->un.e.member[i].label.name); 100 fprintf(out, "]"); 101 } 102 break; 103 case AUDIO_MIXER_SET: 104 for(n = i = 0; i < p->infp->un.s.num_mem; i++) 105 if (m->un.mask & p->infp->un.s.member[i].mask) 106 fprintf(out, "%s%s", n++ ? "," : "", 107 p->infp->un.s.member[i].label.name); 108 if (prvalset) { 109 fprintf(out, " { "); 110 for(i = 0; i < p->infp->un.s.num_mem; i++) 111 fprintf(out, "%s ", p->infp->un.s.member[i].label.name); 112 fprintf(out, "}"); 113 } 114 break; 115 case AUDIO_MIXER_VALUE: 116 if (m->un.value.num_channels == 1) 117 fprintf(out, "%d", m->un.value.level[0]); 118 else 119 fprintf(out, "%d,%d", m->un.value.level[0], 120 m->un.value.level[1]); 121 break; 122 default: 123 errx(1, "Invalid format."); 124 } 125 } 126 127 int 128 rdfield(struct field *p, char *q) 129 { 130 mixer_ctrl_t *m; 131 int v, v0, v1, mask; 132 int i; 133 char *s; 134 135 m = p->valp; 136 switch(m->type) { 137 case AUDIO_MIXER_ENUM: 138 for(i = 0; i < p->infp->un.e.num_mem; i++) 139 if (strcmp(p->infp->un.e.member[i].label.name, q) == 0) 140 break; 141 if (i < p->infp->un.e.num_mem) 142 m->un.ord = p->infp->un.e.member[i].ord; 143 else { 144 warnx("Bad enum value %s", q); 145 return 0; 146 } 147 break; 148 case AUDIO_MIXER_SET: 149 mask = 0; 150 for(v = 0; q && *q; q = s) { 151 s = strchr(q, ','); 152 if (s) 153 *s++ = 0; 154 for(i = 0; i < p->infp->un.s.num_mem; i++) 155 if (strcmp(p->infp->un.s.member[i].label.name, q) == 0) 156 break; 157 if (i < p->infp->un.s.num_mem) { 158 mask |= p->infp->un.s.member[i].mask; 159 } else { 160 warnx("Bad set value %s", q); 161 return 0; 162 } 163 } 164 m->un.mask = mask; 165 break; 166 case AUDIO_MIXER_VALUE: 167 if (m->un.value.num_channels == 1) { 168 if (sscanf(q, "%d", &v) == 1) { 169 m->un.value.level[0] = v; 170 } else { 171 warnx("Bad number %s", q); 172 return 0; 173 } 174 } else { 175 if (sscanf(q, "%d,%d", &v0, &v1) == 2) { 176 m->un.value.level[0] = v0; 177 m->un.value.level[1] = v1; 178 } else if (sscanf(q, "%d", &v) == 1) { 179 m->un.value.level[0] = m->un.value.level[1] = v; 180 } else { 181 warnx("Bad numbers %s", q); 182 return 0; 183 } 184 } 185 break; 186 default: 187 errx(1, "Invalid format."); 188 } 189 p->changed = 1; 190 return 1; 191 } 192 193 void 194 main(int argc, char **argv) 195 { 196 int fd, r, i, j, ch, pos; 197 int aflag = 0, wflag = 0, vflag = 0; 198 char *file = "/dev/mixer"; 199 char *sep = "="; 200 mixer_devinfo_t dinfo; 201 mixer_ctrl_t val; 202 int ndev; 203 204 prog = *argv; 205 206 while ((ch = getopt(argc, argv, "af:nvw")) != -1) { 207 switch(ch) { 208 case 'a': 209 aflag++; 210 break; 211 case 'w': 212 wflag++; 213 break; 214 case 'v': 215 vflag++; 216 break; 217 case 'n': 218 sep = 0; 219 break; 220 case 'f': 221 file = optarg; 222 break; 223 case '?': 224 default: 225 usage: 226 fprintf(out, "%s [-f file] [-v] [-n] name ...\n", prog); 227 fprintf(out, "%s [-f file] [-v] [-n] -w name=value ...\n", prog); 228 fprintf(out, "%s [-f file] [-v] [-n] -a\n", prog); 229 exit(0); 230 } 231 } 232 argc -= optind; 233 argv += optind; 234 235 fd = open(file, O_RDWR); 236 if (fd < 0) 237 err(1, "%s", file); 238 239 for(ndev = 0; ; ndev++) { 240 dinfo.index = ndev; 241 if (ioctl(fd, AUDIO_MIXER_DEVINFO, &dinfo) < 0) 242 break; 243 } 244 rfields = calloc(ndev, sizeof *rfields); 245 fields = calloc(ndev, sizeof *fields); 246 infos = calloc(ndev, sizeof *infos); 247 values = calloc(ndev, sizeof *values); 248 249 for(i = 0; i < ndev; i++) { 250 infos[i].index = i; 251 ioctl(fd, AUDIO_MIXER_DEVINFO, &infos[i]); 252 } 253 254 for(i = 0; i < ndev; i++) { 255 if (infos[i].mixer_class >= 0 && infos[i].mixer_class < ndev) 256 rfields[i].name = catstr(infos[infos[i].mixer_class].label.name, 257 infos[i].label.name); 258 else 259 rfields[i].name = infos[i].label.name; 260 rfields[i].valp = &values[i]; 261 rfields[i].infp = &infos[i]; 262 } 263 264 for(i = 0; i < ndev; i++) { 265 values[i].dev = i; 266 values[i].type = infos[i].type; 267 if (infos[i].type != AUDIO_MIXER_CLASS) { 268 values[i].un.value.num_channels = 2; 269 if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0) { 270 values[i].un.value.num_channels = 1; 271 if (ioctl(fd, AUDIO_MIXER_READ, &values[i]) < 0) 272 err(1, NULL); 273 } 274 } 275 } 276 277 for(j = i = 0; i < ndev; i++) { 278 if (infos[i].type != AUDIO_MIXER_CLASS && 279 infos[i].type != -1) { 280 fields[j++] = rfields[i]; 281 for(pos = infos[i].next; pos != AUDIO_MIXER_LAST; 282 pos = infos[pos].next) { 283 fields[j] = rfields[pos]; 284 fields[j].name = catstr(rfields[i].name, 285 infos[pos].label.name); 286 infos[pos].type = -1; 287 j++; 288 } 289 } 290 } 291 292 if (argc == 0 && aflag && !wflag) { 293 for(i = 0; fields[i].name; i++) { 294 prfield(&fields[i], sep, vflag); 295 fprintf(out, "\n"); 296 } 297 } else if (argc > 0 && !aflag) { 298 struct field *p; 299 if (wflag) { 300 while(argc--) { 301 char *q; 302 303 q = strchr(*argv, '='); 304 if (q) { 305 *q++ = 0; 306 p = findfield(*argv); 307 if (p == 0) 308 warnx("field %s does not exist", *argv); 309 else { 310 val = *p->valp; 311 if (rdfield(p, q)) { 312 if (ioctl(fd, AUDIO_MIXER_WRITE, p->valp) < 0) 313 warn(NULL); 314 else if (sep) { 315 *p->valp = val; 316 prfield(p, ": ", 0); 317 ioctl(fd, AUDIO_MIXER_READ, p->valp); 318 printf(" -> "); 319 prfield(p, 0, 0); 320 printf("\n"); 321 } 322 } 323 } 324 } else { 325 warnx("No `=' in %s", *argv); 326 } 327 argv++; 328 } 329 } else { 330 while(argc--) { 331 p = findfield(*argv); 332 if (p == 0) 333 warnx("field %s does not exist", *argv); 334 else 335 prfield(p, sep, vflag), fprintf(out, "\n"); 336 argv++; 337 } 338 } 339 } else 340 goto usage; 341 exit(0); 342 } 343