ctl.c revision 1.39
1 /* $NetBSD: ctl.c,v 1.39 2011/08/28 01:17:48 joerg Exp $ */ 2 3 /* 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (augustss (at) NetBSD.org). 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 */ 31 #include <sys/cdefs.h> 32 33 #ifndef lint 34 __RCSID("$NetBSD: ctl.c,v 1.39 2011/08/28 01:17:48 joerg Exp $"); 35 #endif 36 37 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 #include <sys/ioctl.h> 41 #include <sys/audioio.h> 42 43 #include <err.h> 44 #include <fcntl.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 50 #include <paths.h> 51 52 #include "libaudio.h" 53 54 static struct field *findfield(const char *name); 55 static void prfield(const struct field *p, const char *sep); 56 static void rdfield(struct field *p, char *q); 57 static void getinfo(int fd); 58 static void audioctl_write(int, int, char *[]); 59 __dead static void usage(void); 60 61 static audio_device_t adev; 62 63 static audio_info_t info; 64 65 static char encbuf[1000]; 66 67 static int properties, fullduplex, rerror; 68 69 static struct field { 70 const char *name; 71 void *valp; 72 int format; 73 #define STRING 1 74 #define INT 2 75 #define UINT 3 76 #define P_R 4 77 #define ULONG 5 /* XXX obsolete now */ 78 #define UCHAR 6 79 #define ENC 7 80 #define PROPS 8 81 #define XINT 9 82 #define FORMAT 10 83 char flags; 84 #define READONLY 1 85 #define ALIAS 2 86 #define SET 4 87 } fields[] = { 88 { "name", &adev.name, STRING, READONLY }, 89 { "version", &adev.version, STRING, READONLY }, 90 { "config", &adev.config, STRING, READONLY }, 91 { "encodings", encbuf, STRING, READONLY }, 92 { "properties", &properties, PROPS, READONLY }, 93 { "full_duplex", &fullduplex, UINT, 0 }, 94 { "fullduplex", &fullduplex, UINT, 0 }, 95 { "blocksize", &info.blocksize, UINT, 0 }, 96 { "hiwat", &info.hiwat, UINT, 0 }, 97 { "lowat", &info.lowat, UINT, 0 }, 98 { "monitor_gain", &info.monitor_gain, UINT, 0 }, 99 { "mode", &info.mode, P_R, READONLY }, 100 { "play", &info.play, FORMAT, ALIAS }, 101 { "play.rate", &info.play.sample_rate, UINT, 0 }, 102 { "play.sample_rate", &info.play.sample_rate, UINT, ALIAS }, 103 { "play.channels", &info.play.channels, UINT, 0 }, 104 { "play.precision", &info.play.precision, UINT, 0 }, 105 { "play.encoding", &info.play.encoding, ENC, 0 }, 106 { "play.gain", &info.play.gain, UINT, 0 }, 107 { "play.balance", &info.play.balance, UCHAR, 0 }, 108 { "play.port", &info.play.port, XINT, 0 }, 109 { "play.avail_ports", &info.play.avail_ports, XINT, 0 }, 110 { "play.seek", &info.play.seek, UINT, READONLY }, 111 { "play.samples", &info.play.samples, UINT, READONLY }, 112 { "play.eof", &info.play.eof, UINT, READONLY }, 113 { "play.pause", &info.play.pause, UCHAR, 0 }, 114 { "play.error", &info.play.error, UCHAR, READONLY }, 115 { "play.waiting", &info.play.waiting, UCHAR, READONLY }, 116 { "play.open", &info.play.open, UCHAR, READONLY }, 117 { "play.active", &info.play.active, UCHAR, READONLY }, 118 { "play.buffer_size", &info.play.buffer_size, UINT, 0 }, 119 { "record", &info.record, FORMAT, ALIAS }, 120 { "record.rate", &info.record.sample_rate,UINT, 0 }, 121 { "record.sample_rate", &info.record.sample_rate,UINT, ALIAS }, 122 { "record.channels", &info.record.channels, UINT, 0 }, 123 { "record.precision", &info.record.precision, UINT, 0 }, 124 { "record.encoding", &info.record.encoding, ENC, 0 }, 125 { "record.gain", &info.record.gain, UINT, 0 }, 126 { "record.balance", &info.record.balance, UCHAR, 0 }, 127 { "record.port", &info.record.port, XINT, 0 }, 128 { "record.avail_ports", &info.record.avail_ports,XINT, 0 }, 129 { "record.seek", &info.record.seek, UINT, READONLY }, 130 { "record.samples", &info.record.samples, UINT, READONLY }, 131 { "record.eof", &info.record.eof, UINT, READONLY }, 132 { "record.pause", &info.record.pause, UCHAR, 0 }, 133 { "record.error", &info.record.error, UCHAR, READONLY }, 134 { "record.waiting", &info.record.waiting, UCHAR, READONLY }, 135 { "record.open", &info.record.open, UCHAR, READONLY }, 136 { "record.active", &info.record.active, UCHAR, READONLY }, 137 { "record.buffer_size", &info.record.buffer_size,UINT, 0 }, 138 { "record.errors", &rerror, INT, READONLY }, 139 { .name = NULL }, 140 }; 141 142 static const struct { 143 const char *name; 144 u_int prop; 145 } props[] = { 146 { "full_duplex", AUDIO_PROP_FULLDUPLEX }, 147 { "mmap", AUDIO_PROP_MMAP }, 148 { "independent", AUDIO_PROP_INDEPENDENT }, 149 { .name = NULL }, 150 }; 151 152 static struct field * 153 findfield(const char *name) 154 { 155 int i; 156 for (i = 0; fields[i].name; i++) 157 if (strcmp(fields[i].name, name) == 0) 158 return &fields[i]; 159 return 0; 160 } 161 162 static void 163 prfield(const struct field *p, const char *sep) 164 { 165 u_int v; 166 const char *cm, *encstr; 167 int i; 168 169 if (sep) 170 printf("%s%s", p->name, sep); 171 switch(p->format) { 172 case STRING: 173 printf("%s", (const char*)p->valp); 174 break; 175 case INT: 176 printf("%d", *(const int*)p->valp); 177 break; 178 case UINT: 179 printf("%u", *(const u_int*)p->valp); 180 break; 181 case XINT: 182 printf("0x%x", *(const u_int*)p->valp); 183 break; 184 case UCHAR: 185 printf("%u", *(const u_char*)p->valp); 186 break; 187 case ULONG: 188 printf("%lu", *(const u_long*)p->valp); 189 break; 190 case P_R: 191 v = *(const u_int*)p->valp; 192 cm = ""; 193 if (v & AUMODE_PLAY) { 194 if (v & AUMODE_PLAY_ALL) 195 printf("play"); 196 else 197 printf("playsync"); 198 cm = ","; 199 } 200 if (v & AUMODE_RECORD) 201 printf("%srecord", cm); 202 break; 203 case ENC: 204 v = *(u_int*)p->valp; 205 encstr = audio_enc_from_val(v); 206 if (encstr) 207 printf("%s", encstr); 208 else 209 printf("%u", v); 210 break; 211 case PROPS: 212 v = *(u_int*)p->valp; 213 for (cm = "", i = 0; props[i].name; i++) { 214 if (v & props[i].prop) { 215 printf("%s%s", cm, props[i].name); 216 cm = ","; 217 } 218 } 219 break; 220 case FORMAT: 221 prfield(p + 1, 0); 222 printf(","); 223 prfield(p + 3, 0); 224 printf(","); 225 prfield(p + 4, 0); 226 printf(","); 227 prfield(p + 5, 0); 228 break; 229 default: 230 errx(1, "Invalid print format."); 231 } 232 } 233 234 static void 235 rdfield(struct field *p, char *q) 236 { 237 int enc; 238 u_int u; 239 char *s; 240 241 switch(p->format) { 242 case UINT: 243 if (sscanf(q, "%u", (unsigned int *)p->valp) != 1) 244 errx(1, "Bad number: %s", q); 245 break; 246 case UCHAR: 247 if (sscanf(q, "%u", &u) != 1) 248 errx(1, "Bad number: %s", q); 249 else 250 *(u_char *)p->valp = u; 251 break; 252 case XINT: 253 if (sscanf(q, "0x%x", (unsigned int *)p->valp) != 1 && 254 sscanf(q, "%x", (unsigned int *)p->valp) != 1) 255 errx(1, "Bad number: %s", q); 256 break; 257 case ENC: 258 enc = audio_enc_to_val(q); 259 if (enc >= 0) 260 *(u_int*)p->valp = enc; 261 else 262 errx(1, "Unknown encoding: %s", q); 263 break; 264 case FORMAT: 265 s = strsep(&q, ","); 266 if (s) 267 rdfield(p + 1, s); 268 s = strsep(&q, ","); 269 if (s) 270 rdfield(p + 3, s); 271 s = strsep(&q, ","); 272 if (s) 273 rdfield(p + 4, s); 274 s = strsep(&q, ","); 275 if (s) 276 rdfield(p + 5, s); 277 if (!s || q) 278 errx(1, "Bad format"); 279 break; 280 default: 281 errx(1, "Invalid read format."); 282 } 283 p->flags |= SET; 284 } 285 286 static void 287 getinfo(int fd) 288 { 289 int pos, i; 290 291 if (ioctl(fd, AUDIO_GETDEV, &adev) < 0) 292 err(1, "AUDIO_GETDEV"); 293 for (pos = 0, i = 0; ; i++) { 294 audio_encoding_t enc; 295 enc.index = i; 296 if (ioctl(fd, AUDIO_GETENC, &enc) < 0) 297 break; 298 if (pos >= (int)sizeof(encbuf)-1) 299 break; 300 if (pos) 301 encbuf[pos++] = ','; 302 if (pos >= (int)sizeof(encbuf)-1) 303 break; 304 pos += snprintf(encbuf+pos, sizeof(encbuf)-pos, "%s:%d%s", 305 enc.name, enc.precision, 306 enc.flags & AUDIO_ENCODINGFLAG_EMULATED ? "*" : ""); 307 } 308 if (ioctl(fd, AUDIO_GETFD, &fullduplex) < 0) 309 err(1, "AUDIO_GETFD"); 310 if (ioctl(fd, AUDIO_GETPROPS, &properties) < 0) 311 err(1, "AUDIO_GETPROPS"); 312 if (ioctl(fd, AUDIO_RERROR, &rerror) < 0) 313 err(1, "AUDIO_RERROR"); 314 if (ioctl(fd, AUDIO_GETINFO, &info) < 0) 315 err(1, "AUDIO_GETINFO"); 316 } 317 318 static void 319 usage(void) 320 { 321 const char *prog = getprogname(); 322 323 fprintf(stderr, "Usage: %s [-d file] [-n] name ...\n", prog); 324 fprintf(stderr, "Usage: %s [-d file] [-n] -w name=value ...\n", prog); 325 fprintf(stderr, "Usage: %s [-d file] [-n] -a\n", prog); 326 exit(1); 327 } 328 329 int 330 main(int argc, char *argv[]) 331 { 332 int fd, i, ch; 333 int aflag = 0, wflag = 0; 334 const char *deffile = _PATH_AUDIOCTL; 335 const char *file; 336 const char *sep = "="; 337 338 file = getenv("AUDIOCTLDEVICE"); 339 if (file == NULL) 340 file = deffile; 341 342 while ((ch = getopt(argc, argv, "ad:f:nw")) != -1) { 343 switch(ch) { 344 case 'a': 345 aflag++; 346 break; 347 case 'w': 348 wflag++; 349 break; 350 case 'n': 351 sep = 0; 352 break; 353 case 'f': /* compatibility */ 354 case 'd': 355 file = optarg; 356 break; 357 case '?': 358 default: 359 usage(); 360 } 361 } 362 argc -= optind; 363 argv += optind; 364 365 fd = open(file, O_WRONLY); 366 if (fd < 0) 367 fd = open(file, O_RDONLY); 368 if (fd < 0 && file == deffile) { 369 file = _PATH_AUDIOCTL0; 370 fd = open(file, O_WRONLY); 371 if (fd < 0) 372 fd = open(file, O_RDONLY); 373 } 374 375 if (fd < 0) 376 err(1, "%s", file); 377 378 if (!wflag) 379 getinfo(fd); 380 381 if (argc == 0 && aflag && !wflag) { 382 for (i = 0; fields[i].name; i++) { 383 if (!(fields[i].flags & ALIAS)) { 384 prfield(&fields[i], sep); 385 printf("\n"); 386 } 387 } 388 } else if (argc > 0 && !aflag) { 389 if (wflag) { 390 audioctl_write(fd, argc, argv); 391 if (sep) { 392 getinfo(fd); 393 for (i = 0; fields[i].name; i++) { 394 if (fields[i].flags & SET) { 395 printf("%s: -> ", fields[i].name); 396 prfield(&fields[i], 0); 397 printf("\n"); 398 } 399 } 400 } 401 } else { 402 struct field *p; 403 while (argc--) { 404 p = findfield(*argv); 405 if (p == 0) { 406 if (strchr(*argv, '=')) 407 warnx("field %s does not exist (use -w to set a variable)", *argv); 408 else 409 warnx("field %s does not exist", *argv); 410 } else { 411 prfield(p, sep); 412 printf("\n"); 413 } 414 argv++; 415 } 416 } 417 } else 418 usage(); 419 exit(0); 420 } 421 422 static void 423 audioctl_write(int fd, int argc, char *argv[]) 424 { 425 struct field *p; 426 427 AUDIO_INITINFO(&info); 428 while (argc--) { 429 char *q; 430 431 q = strchr(*argv, '='); 432 if (q) { 433 *q++ = 0; 434 p = findfield(*argv); 435 if (p == 0) 436 warnx("field `%s' does not exist", *argv); 437 else { 438 if (p->flags & READONLY) 439 warnx("`%s' is read only", *argv); 440 else { 441 rdfield(p, q); 442 if (p->valp == &fullduplex) 443 if (ioctl(fd, AUDIO_SETFD, &fullduplex) < 0) 444 err(1, "set failed"); 445 } 446 } 447 } else 448 warnx("No `=' in %s", *argv); 449 argv++; 450 } 451 if (ioctl(fd, AUDIO_SETINFO, &info) < 0) 452 err(1, "set failed"); 453 } 454
Indexes created Fri Sep 26 20:09:58 GMT 2025