ossaudio.c revision 1.49
1 /* $NetBSD: ossaudio.c,v 1.49 2005/12/11 12:20:23 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ossaudio.c,v 1.49 2005/12/11 12:20:23 christos Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/proc.h> 41 #include <sys/systm.h> 42 #include <sys/file.h> 43 #include <sys/vnode.h> 44 #include <sys/filedesc.h> 45 #include <sys/ioctl.h> 46 #include <sys/mount.h> 47 #include <sys/kernel.h> 48 #include <sys/audioio.h> 49 #include <sys/midiio.h> 50 51 #include <sys/sa.h> 52 #include <sys/syscallargs.h> 53 54 #include <compat/ossaudio/ossaudio.h> 55 #include <compat/ossaudio/ossaudiovar.h> 56 57 #ifdef AUDIO_DEBUG 58 #define DPRINTF(x) if (ossdebug) printf x 59 int ossdebug = 0; 60 #else 61 #define DPRINTF(x) 62 #endif 63 64 #define TO_OSSVOL(x) (((x) * 100 + 127) / 255) 65 #define FROM_OSSVOL(x) ((((x) > 100 ? 100 : (x)) * 255 + 50) / 100) 66 67 static struct audiodevinfo *getdevinfo __P((struct file *, struct lwp *)); 68 static int opaque_to_enum(struct audiodevinfo *di, audio_mixer_name_t *label, int opq); 69 static int enum_to_ord(struct audiodevinfo *di, int enm); 70 static int enum_to_mask(struct audiodevinfo *di, int enm); 71 72 static void setblocksize __P((struct file *, struct audio_info *, struct lwp *)); 73 74 75 int 76 oss_ioctl_audio(l, uap, retval) 77 struct lwp *l; 78 struct oss_sys_ioctl_args /* { 79 syscallarg(int) fd; 80 syscallarg(u_long) com; 81 syscallarg(caddr_t) data; 82 } */ *uap; 83 register_t *retval; 84 { 85 struct proc *p = l->l_proc; 86 struct file *fp; 87 struct filedesc *fdp; 88 u_long com; 89 struct audio_info tmpinfo; 90 struct audio_offset tmpoffs; 91 struct oss_audio_buf_info bufinfo; 92 struct oss_count_info cntinfo; 93 struct audio_encoding tmpenc; 94 u_int u; 95 int idat, idata; 96 int error = 0; 97 int (*ioctlf)(struct file *, u_long, void *, struct lwp *); 98 99 fdp = p->p_fd; 100 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 101 return (EBADF); 102 103 FILE_USE(fp); 104 105 if ((fp->f_flag & (FREAD | FWRITE)) == 0) { 106 error = EBADF; 107 goto out; 108 } 109 110 com = SCARG(uap, com); 111 DPRINTF(("oss_ioctl_audio: com=%08lx\n", com)); 112 113 retval[0] = 0; 114 115 ioctlf = fp->f_ops->fo_ioctl; 116 switch (com) { 117 case OSS_SNDCTL_DSP_RESET: 118 error = ioctlf(fp, AUDIO_FLUSH, (caddr_t)0, l); 119 if (error) 120 goto out; 121 break; 122 case OSS_SNDCTL_DSP_SYNC: 123 error = ioctlf(fp, AUDIO_DRAIN, (caddr_t)0, l); 124 if (error) 125 goto out; 126 break; 127 case OSS_SNDCTL_DSP_POST: 128 /* This call is merely advisory, and may be a nop. */ 129 break; 130 case OSS_SNDCTL_DSP_SPEED: 131 (void) ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 132 error = copyin(SCARG(uap, data), &idat, sizeof idat); 133 if (error) 134 goto out; 135 tmpinfo.play.sample_rate = 136 tmpinfo.record.sample_rate = idat; 137 error = ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 138 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_SPEED %d = %d\n", 139 idat, error)); 140 if (error) 141 goto out; 142 /* fall into ... */ 143 case OSS_SOUND_PCM_READ_RATE: 144 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 145 if (error) 146 goto out; 147 idat = tmpinfo.play.sample_rate; 148 error = copyout(&idat, SCARG(uap, data), sizeof idat); 149 if (error) 150 goto out; 151 break; 152 case OSS_SNDCTL_DSP_STEREO: 153 (void) ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 154 error = copyin(SCARG(uap, data), &idat, sizeof idat); 155 if (error) 156 goto out; 157 tmpinfo.play.channels = 158 tmpinfo.record.channels = idat ? 2 : 1; 159 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 160 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 161 if (error) 162 goto out; 163 idat = tmpinfo.play.channels - 1; 164 error = copyout(&idat, SCARG(uap, data), sizeof idat); 165 if (error) 166 goto out; 167 break; 168 case OSS_SNDCTL_DSP_GETBLKSIZE: 169 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 170 if (error) 171 goto out; 172 setblocksize(fp, &tmpinfo, l); 173 idat = tmpinfo.blocksize; 174 error = copyout(&idat, SCARG(uap, data), sizeof idat); 175 if (error) 176 goto out; 177 break; 178 case OSS_SNDCTL_DSP_SETFMT: 179 (void) ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 180 error = copyin(SCARG(uap, data), &idat, sizeof idat); 181 if (error) 182 goto out; 183 switch (idat) { 184 case OSS_AFMT_MU_LAW: 185 tmpinfo.play.precision = 186 tmpinfo.record.precision = 8; 187 tmpinfo.play.encoding = 188 tmpinfo.record.encoding = AUDIO_ENCODING_ULAW; 189 break; 190 case OSS_AFMT_A_LAW: 191 tmpinfo.play.precision = 192 tmpinfo.record.precision = 8; 193 tmpinfo.play.encoding = 194 tmpinfo.record.encoding = AUDIO_ENCODING_ALAW; 195 break; 196 case OSS_AFMT_U8: 197 tmpinfo.play.precision = 198 tmpinfo.record.precision = 8; 199 tmpinfo.play.encoding = 200 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR; 201 break; 202 case OSS_AFMT_S8: 203 tmpinfo.play.precision = 204 tmpinfo.record.precision = 8; 205 tmpinfo.play.encoding = 206 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR; 207 break; 208 case OSS_AFMT_S16_LE: 209 tmpinfo.play.precision = 210 tmpinfo.record.precision = 16; 211 tmpinfo.play.encoding = 212 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_LE; 213 break; 214 case OSS_AFMT_S16_BE: 215 tmpinfo.play.precision = 216 tmpinfo.record.precision = 16; 217 tmpinfo.play.encoding = 218 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_BE; 219 break; 220 case OSS_AFMT_U16_LE: 221 tmpinfo.play.precision = 222 tmpinfo.record.precision = 16; 223 tmpinfo.play.encoding = 224 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_LE; 225 break; 226 case OSS_AFMT_U16_BE: 227 tmpinfo.play.precision = 228 tmpinfo.record.precision = 16; 229 tmpinfo.play.encoding = 230 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_BE; 231 break; 232 default: 233 error = EINVAL; 234 goto out; 235 } 236 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 237 /* fall into ... */ 238 case OSS_SOUND_PCM_READ_BITS: 239 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 240 if (error) 241 goto out; 242 switch (tmpinfo.play.encoding) { 243 case AUDIO_ENCODING_ULAW: 244 idat = OSS_AFMT_MU_LAW; 245 break; 246 case AUDIO_ENCODING_ALAW: 247 idat = OSS_AFMT_A_LAW; 248 break; 249 case AUDIO_ENCODING_SLINEAR_LE: 250 if (tmpinfo.play.precision == 16) 251 idat = OSS_AFMT_S16_LE; 252 else 253 idat = OSS_AFMT_S8; 254 break; 255 case AUDIO_ENCODING_SLINEAR_BE: 256 if (tmpinfo.play.precision == 16) 257 idat = OSS_AFMT_S16_BE; 258 else 259 idat = OSS_AFMT_S8; 260 break; 261 case AUDIO_ENCODING_ULINEAR_LE: 262 if (tmpinfo.play.precision == 16) 263 idat = OSS_AFMT_U16_LE; 264 else 265 idat = OSS_AFMT_U8; 266 break; 267 case AUDIO_ENCODING_ULINEAR_BE: 268 if (tmpinfo.play.precision == 16) 269 idat = OSS_AFMT_U16_BE; 270 else 271 idat = OSS_AFMT_U8; 272 break; 273 case AUDIO_ENCODING_ADPCM: 274 idat = OSS_AFMT_IMA_ADPCM; 275 break; 276 } 277 error = copyout(&idat, SCARG(uap, data), sizeof idat); 278 if (error) 279 goto out; 280 break; 281 case OSS_SNDCTL_DSP_CHANNELS: 282 (void) ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 283 error = copyin(SCARG(uap, data), &idat, sizeof idat); 284 if (error) 285 goto out; 286 tmpinfo.play.channels = 287 tmpinfo.record.channels = idat; 288 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 289 /* fall into ... */ 290 case OSS_SOUND_PCM_READ_CHANNELS: 291 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 292 if (error) 293 goto out; 294 idat = tmpinfo.play.channels; 295 error = copyout(&idat, SCARG(uap, data), sizeof idat); 296 if (error) 297 goto out; 298 break; 299 case OSS_SOUND_PCM_WRITE_FILTER: 300 case OSS_SOUND_PCM_READ_FILTER: 301 error = EINVAL; /* XXX unimplemented */ 302 goto out; 303 case OSS_SNDCTL_DSP_SUBDIVIDE: 304 error = copyin(SCARG(uap, data), &idat, sizeof idat); 305 if (error) 306 goto out; 307 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 308 setblocksize(fp, &tmpinfo, l); 309 if (error) 310 goto out; 311 if (idat == 0) 312 idat = tmpinfo.play.buffer_size / tmpinfo.blocksize; 313 idat = (tmpinfo.play.buffer_size / idat) & -4; 314 (void) ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 315 tmpinfo.blocksize = idat; 316 error = ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 317 if (error) 318 goto out; 319 idat = tmpinfo.play.buffer_size / tmpinfo.blocksize; 320 error = copyout(&idat, SCARG(uap, data), sizeof idat); 321 if (error) 322 goto out; 323 break; 324 case OSS_SNDCTL_DSP_SETFRAGMENT: 325 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 326 error = copyin(SCARG(uap, data), &idat, sizeof idat); 327 if (error) 328 goto out; 329 if ((idat & 0xffff) < 4 || (idat & 0xffff) > 17) { 330 error = EINVAL; 331 goto out; 332 } 333 tmpinfo.blocksize = 1 << (idat & 0xffff); 334 tmpinfo.hiwat = (idat >> 16) & 0x7fff; 335 DPRINTF(("oss_audio: SETFRAGMENT blksize=%d, hiwat=%d\n", 336 tmpinfo.blocksize, tmpinfo.hiwat)); 337 if (tmpinfo.hiwat == 0) /* 0 means set to max */ 338 tmpinfo.hiwat = 65536; 339 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 340 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 341 if (error) 342 goto out; 343 u = tmpinfo.blocksize; 344 for(idat = 0; u > 1; idat++, u >>= 1) 345 ; 346 idat |= (tmpinfo.hiwat & 0x7fff) << 16; 347 error = copyout(&idat, SCARG(uap, data), sizeof idat); 348 if (error) 349 goto out; 350 break; 351 case OSS_SNDCTL_DSP_GETFMTS: 352 for(idat = 0, tmpenc.index = 0; 353 ioctlf(fp, AUDIO_GETENC, (caddr_t)&tmpenc, l) == 0; 354 tmpenc.index++) { 355 switch(tmpenc.encoding) { 356 case AUDIO_ENCODING_ULAW: 357 idat |= OSS_AFMT_MU_LAW; 358 break; 359 case AUDIO_ENCODING_ALAW: 360 idat |= OSS_AFMT_A_LAW; 361 break; 362 case AUDIO_ENCODING_SLINEAR: 363 idat |= OSS_AFMT_S8; 364 break; 365 case AUDIO_ENCODING_SLINEAR_LE: 366 if (tmpenc.precision == 16) 367 idat |= OSS_AFMT_S16_LE; 368 else 369 idat |= OSS_AFMT_S8; 370 break; 371 case AUDIO_ENCODING_SLINEAR_BE: 372 if (tmpenc.precision == 16) 373 idat |= OSS_AFMT_S16_BE; 374 else 375 idat |= OSS_AFMT_S8; 376 break; 377 case AUDIO_ENCODING_ULINEAR: 378 idat |= OSS_AFMT_U8; 379 break; 380 case AUDIO_ENCODING_ULINEAR_LE: 381 if (tmpenc.precision == 16) 382 idat |= OSS_AFMT_U16_LE; 383 else 384 idat |= OSS_AFMT_U8; 385 break; 386 case AUDIO_ENCODING_ULINEAR_BE: 387 if (tmpenc.precision == 16) 388 idat |= OSS_AFMT_U16_BE; 389 else 390 idat |= OSS_AFMT_U8; 391 break; 392 case AUDIO_ENCODING_ADPCM: 393 idat |= OSS_AFMT_IMA_ADPCM; 394 break; 395 default: 396 break; 397 } 398 } 399 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETFMTS = %x\n", idat)); 400 error = copyout(&idat, SCARG(uap, data), sizeof idat); 401 if (error) 402 goto out; 403 break; 404 case OSS_SNDCTL_DSP_GETOSPACE: 405 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 406 if (error) 407 goto out; 408 setblocksize(fp, &tmpinfo, l); 409 bufinfo.fragsize = tmpinfo.blocksize; 410 bufinfo.fragments = tmpinfo.hiwat - 411 (tmpinfo.play.seek + tmpinfo.blocksize - 1) / 412 tmpinfo.blocksize; 413 bufinfo.fragstotal = tmpinfo.hiwat; 414 bufinfo.bytes = 415 tmpinfo.hiwat * tmpinfo.blocksize - tmpinfo.play.seek; 416 error = copyout(&bufinfo, SCARG(uap, data), sizeof bufinfo); 417 if (error) 418 goto out; 419 break; 420 case OSS_SNDCTL_DSP_GETISPACE: 421 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 422 if (error) 423 goto out; 424 setblocksize(fp, &tmpinfo, l); 425 bufinfo.fragsize = tmpinfo.blocksize; 426 bufinfo.fragments = tmpinfo.hiwat - 427 (tmpinfo.record.seek + tmpinfo.blocksize - 1) / 428 tmpinfo.blocksize; 429 bufinfo.fragstotal = tmpinfo.hiwat; 430 bufinfo.bytes = 431 tmpinfo.hiwat * tmpinfo.blocksize - tmpinfo.record.seek; 432 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETxSPACE = %d %d %d %d\n", 433 bufinfo.fragsize, bufinfo.fragments, 434 bufinfo.fragstotal, bufinfo.bytes)); 435 error = copyout(&bufinfo, SCARG(uap, data), sizeof bufinfo); 436 if (error) 437 goto out; 438 break; 439 case OSS_SNDCTL_DSP_NONBLOCK: 440 idat = 1; 441 error = ioctlf(fp, FIONBIO, (caddr_t)&idat, l); 442 if (error) 443 goto out; 444 break; 445 case OSS_SNDCTL_DSP_GETCAPS: 446 error = ioctlf(fp, AUDIO_GETPROPS, (caddr_t)&idata, l); 447 if (error) 448 goto out; 449 idat = OSS_DSP_CAP_TRIGGER; /* pretend we have trigger */ 450 if (idata & AUDIO_PROP_FULLDUPLEX) 451 idat |= OSS_DSP_CAP_DUPLEX; 452 if (idata & AUDIO_PROP_MMAP) 453 idat |= OSS_DSP_CAP_MMAP; 454 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETCAPS = %x\n", idat)); 455 error = copyout(&idat, SCARG(uap, data), sizeof idat); 456 if (error) 457 goto out; 458 break; 459 #if 0 460 case OSS_SNDCTL_DSP_GETTRIGGER: 461 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, l); 462 if (error) 463 goto out; 464 idat = (tmpinfo.play.pause ? 0 : OSS_PCM_ENABLE_OUTPUT) | 465 (tmpinfo.record.pause ? 0 : OSS_PCM_ENABLE_INPUT); 466 error = copyout(&idat, SCARG(uap, data), sizeof idat); 467 if (error) 468 goto out; 469 break; 470 case OSS_SNDCTL_DSP_SETTRIGGER: 471 (void) ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 472 error = copyin(SCARG(uap, data), &idat, sizeof idat); 473 if (error) 474 goto out; 475 tmpinfo.play.pause = (idat & OSS_PCM_ENABLE_OUTPUT) == 0; 476 tmpinfo.record.pause = (idat & OSS_PCM_ENABLE_INPUT) == 0; 477 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, l); 478 error = copyout(&idat, SCARG(uap, data), sizeof idat); 479 if (error) 480 goto out; 481 break; 482 #else 483 case OSS_SNDCTL_DSP_GETTRIGGER: 484 case OSS_SNDCTL_DSP_SETTRIGGER: 485 /* XXX Do nothing for now. */ 486 idat = OSS_PCM_ENABLE_OUTPUT; 487 error = copyout(&idat, SCARG(uap, data), sizeof idat); 488 goto out; 489 #endif 490 case OSS_SNDCTL_DSP_GETIPTR: 491 error = ioctlf(fp, AUDIO_GETIOFFS, (caddr_t)&tmpoffs, l); 492 if (error) 493 goto out; 494 cntinfo.bytes = tmpoffs.samples; 495 cntinfo.blocks = tmpoffs.deltablks; 496 cntinfo.ptr = tmpoffs.offset; 497 error = copyout(&cntinfo, SCARG(uap, data), sizeof cntinfo); 498 if (error) 499 goto out; 500 break; 501 case OSS_SNDCTL_DSP_GETOPTR: 502 error = ioctlf(fp, AUDIO_GETOOFFS, (caddr_t)&tmpoffs, l); 503 if (error) 504 goto out; 505 cntinfo.bytes = tmpoffs.samples; 506 cntinfo.blocks = tmpoffs.deltablks; 507 cntinfo.ptr = tmpoffs.offset; 508 error = copyout(&cntinfo, SCARG(uap, data), sizeof cntinfo); 509 if (error) 510 goto out; 511 break; 512 case OSS_SNDCTL_DSP_SETDUPLEX: 513 idat = 1; 514 error = ioctlf(fp, AUDIO_SETFD, (caddr_t)&idat, l); 515 goto out; 516 case OSS_SNDCTL_DSP_MAPINBUF: 517 case OSS_SNDCTL_DSP_MAPOUTBUF: 518 case OSS_SNDCTL_DSP_SETSYNCRO: 519 case OSS_SNDCTL_DSP_PROFILE: 520 error = EINVAL; 521 goto out; 522 default: 523 error = EINVAL; 524 goto out; 525 } 526 527 out: 528 FILE_UNUSE(fp, l); 529 return error; 530 } 531 532 /* If the NetBSD mixer device should have more than 32 devices 533 * some will not be available to Linux */ 534 #define NETBSD_MAXDEVS 64 535 struct audiodevinfo { 536 int done; 537 dev_t dev; 538 int16_t devmap[OSS_SOUND_MIXER_NRDEVICES], 539 rdevmap[NETBSD_MAXDEVS]; 540 char names[NETBSD_MAXDEVS][MAX_AUDIO_DEV_LEN]; 541 int enum2opaque[NETBSD_MAXDEVS]; 542 u_long devmask, recmask, stereomask; 543 u_long caps, source; 544 }; 545 546 static int 547 opaque_to_enum(struct audiodevinfo *di, audio_mixer_name_t *label, int opq) 548 { 549 int i, o; 550 551 for (i = 0; i < NETBSD_MAXDEVS; i++) { 552 o = di->enum2opaque[i]; 553 if (o == opq) 554 break; 555 if (o == -1 && label != NULL && 556 !strncmp(di->names[i], label->name, sizeof di->names[i])) { 557 di->enum2opaque[i] = opq; 558 break; 559 } 560 } 561 if (i >= NETBSD_MAXDEVS) 562 i = -1; 563 /*printf("opq_to_enum %s %d -> %d\n", label->name, opq, i);*/ 564 return (i); 565 } 566 567 static int 568 enum_to_ord(struct audiodevinfo *di, int enm) 569 { 570 if (enm >= NETBSD_MAXDEVS) 571 return (-1); 572 573 /*printf("enum_to_ord %d -> %d\n", enm, di->enum2opaque[enm]);*/ 574 return (di->enum2opaque[enm]); 575 } 576 577 static int 578 enum_to_mask(struct audiodevinfo *di, int enm) 579 { 580 int m; 581 if (enm >= NETBSD_MAXDEVS) 582 return (0); 583 584 m = di->enum2opaque[enm]; 585 if (m == -1) 586 m = 0; 587 /*printf("enum_to_mask %d -> %d\n", enm, di->enum2opaque[enm]);*/ 588 return (m); 589 } 590 591 /* 592 * Collect the audio device information to allow faster 593 * emulation of the Linux mixer ioctls. Cache the information 594 * to eliminate the overhead of repeating all the ioctls needed 595 * to collect the information. 596 */ 597 static struct audiodevinfo * 598 getdevinfo(fp, l) 599 struct file *fp; 600 struct lwp *l; 601 { 602 struct proc *p = l->l_proc; 603 mixer_devinfo_t mi; 604 int i, j, e; 605 static const struct { 606 const char *name; 607 int code; 608 } *dp, devs[] = { 609 { AudioNmicrophone, OSS_SOUND_MIXER_MIC }, 610 { AudioNline, OSS_SOUND_MIXER_LINE }, 611 { AudioNcd, OSS_SOUND_MIXER_CD }, 612 { AudioNdac, OSS_SOUND_MIXER_PCM }, 613 { AudioNaux, OSS_SOUND_MIXER_LINE1 }, 614 { AudioNrecord, OSS_SOUND_MIXER_IMIX }, 615 { AudioNmaster, OSS_SOUND_MIXER_VOLUME }, 616 { AudioNtreble, OSS_SOUND_MIXER_TREBLE }, 617 { AudioNbass, OSS_SOUND_MIXER_BASS }, 618 { AudioNspeaker, OSS_SOUND_MIXER_SPEAKER }, 619 /* { AudioNheadphone, ?? },*/ 620 { AudioNoutput, OSS_SOUND_MIXER_OGAIN }, 621 { AudioNinput, OSS_SOUND_MIXER_IGAIN }, 622 /* { AudioNmaster, OSS_SOUND_MIXER_SPEAKER },*/ 623 /* { AudioNstereo, ?? },*/ 624 /* { AudioNmono, ?? },*/ 625 { AudioNfmsynth, OSS_SOUND_MIXER_SYNTH }, 626 /* { AudioNwave, OSS_SOUND_MIXER_PCM },*/ 627 { AudioNmidi, OSS_SOUND_MIXER_SYNTH }, 628 /* { AudioNmixerout, ?? },*/ 629 { 0, -1 } 630 }; 631 int (*ioctlf)(struct file *, u_long, void *, struct lwp *) = 632 fp->f_ops->fo_ioctl; 633 struct vnode *vp; 634 struct vattr va; 635 static struct audiodevinfo devcache = { 0 }; 636 struct audiodevinfo *di = &devcache; 637 int mlen, dlen; 638 639 /* 640 * Figure out what device it is so we can check if the 641 * cached data is valid. 642 */ 643 vp = (struct vnode *)fp->f_data; 644 if (vp->v_type != VCHR) 645 return 0; 646 if (VOP_GETATTR(vp, &va, p->p_ucred, l)) 647 return 0; 648 if (di->done && di->dev == va.va_rdev) 649 return di; 650 651 di->done = 1; 652 di->dev = va.va_rdev; 653 di->devmask = 0; 654 di->recmask = 0; 655 di->stereomask = 0; 656 di->source = ~0; 657 di->caps = 0; 658 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) 659 di->devmap[i] = -1; 660 for(i = 0; i < NETBSD_MAXDEVS; i++) { 661 di->rdevmap[i] = -1; 662 di->names[i][0] = '\0'; 663 di->enum2opaque[i] = -1; 664 } 665 for(i = 0; i < NETBSD_MAXDEVS; i++) { 666 mi.index = i; 667 if (ioctlf(fp, AUDIO_MIXER_DEVINFO, (caddr_t)&mi, l) < 0) 668 break; 669 switch(mi.type) { 670 case AUDIO_MIXER_VALUE: 671 for(dp = devs; dp->name; dp++) { 672 if (strcmp(dp->name, mi.label.name) == 0) 673 break; 674 dlen = strlen(dp->name); 675 mlen = strlen(mi.label.name); 676 if (dlen < mlen 677 && mi.label.name[mlen-dlen-1] == '.' 678 && strcmp(dp->name, mi.label.name + mlen - dlen) == 0) 679 break; 680 } 681 if (dp->code >= 0) { 682 di->devmap[dp->code] = i; 683 di->rdevmap[i] = dp->code; 684 di->devmask |= 1 << dp->code; 685 if (mi.un.v.num_channels == 2) 686 di->stereomask |= 1 << dp->code; 687 strncpy(di->names[i], mi.label.name, 688 sizeof di->names[i]); 689 } 690 break; 691 } 692 } 693 for(i = 0; i < NETBSD_MAXDEVS; i++) { 694 mi.index = i; 695 if (ioctlf(fp, AUDIO_MIXER_DEVINFO, (caddr_t)&mi, l) < 0) 696 break; 697 if (strcmp(mi.label.name, AudioNsource) != 0) 698 continue; 699 di->source = i; 700 switch(mi.type) { 701 case AUDIO_MIXER_ENUM: 702 for(j = 0; j < mi.un.e.num_mem; j++) { 703 e = opaque_to_enum(di, 704 &mi.un.e.member[j].label, 705 mi.un.e.member[j].ord); 706 if (e >= 0) 707 di->recmask |= 1 << di->rdevmap[e]; 708 } 709 di->caps = OSS_SOUND_CAP_EXCL_INPUT; 710 break; 711 case AUDIO_MIXER_SET: 712 for(j = 0; j < mi.un.s.num_mem; j++) { 713 e = opaque_to_enum(di, 714 &mi.un.s.member[j].label, 715 mi.un.s.member[j].mask); 716 if (e >= 0) 717 di->recmask |= 1 << di->rdevmap[e]; 718 } 719 break; 720 } 721 } 722 return di; 723 } 724 725 int 726 oss_ioctl_mixer(lwp, uap, retval) 727 struct lwp *lwp; 728 struct oss_sys_ioctl_args /* { 729 syscallarg(int) fd; 730 syscallarg(u_long) com; 731 syscallarg(caddr_t) data; 732 } */ *uap; 733 register_t *retval; 734 { 735 struct proc *p = lwp->l_proc; 736 struct file *fp; 737 struct filedesc *fdp; 738 u_long com; 739 struct audiodevinfo *di; 740 mixer_ctrl_t mc; 741 struct oss_mixer_info omi; 742 struct audio_device adev; 743 int idat; 744 int i; 745 int error; 746 int l, r, n, e; 747 int (*ioctlf)(struct file *, u_long, void *, struct lwp *); 748 749 fdp = p->p_fd; 750 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 751 return (EBADF); 752 753 FILE_USE(fp); 754 755 if ((fp->f_flag & (FREAD | FWRITE)) == 0) { 756 error = EBADF; 757 goto out; 758 } 759 760 com = SCARG(uap, com); 761 DPRINTF(("oss_ioctl_mixer: com=%08lx\n", com)); 762 763 retval[0] = 0; 764 765 di = getdevinfo(fp, lwp); 766 if (di == 0) { 767 error = EINVAL; 768 goto out; 769 } 770 771 ioctlf = fp->f_ops->fo_ioctl; 772 switch (com) { 773 case OSS_GET_VERSION: 774 idat = OSS_SOUND_VERSION; 775 break; 776 case OSS_SOUND_MIXER_INFO: 777 case OSS_SOUND_OLD_MIXER_INFO: 778 error = ioctlf(fp, AUDIO_GETDEV, (caddr_t)&adev, lwp); 779 if (error) 780 goto out; 781 omi.modify_counter = 1; 782 strncpy(omi.id, adev.name, sizeof omi.id); 783 strncpy(omi.name, adev.name, sizeof omi.name); 784 error = copyout(&omi, SCARG(uap, data), OSS_IOCTL_SIZE(com)); 785 goto out; 786 case OSS_SOUND_MIXER_READ_RECSRC: 787 if (di->source == -1) { 788 error = EINVAL; 789 goto out; 790 } 791 mc.dev = di->source; 792 if (di->caps & OSS_SOUND_CAP_EXCL_INPUT) { 793 mc.type = AUDIO_MIXER_ENUM; 794 error = ioctlf(fp, AUDIO_MIXER_READ, (caddr_t)&mc, lwp); 795 if (error) 796 goto out; 797 e = opaque_to_enum(di, NULL, mc.un.ord); 798 if (e >= 0) 799 idat = 1 << di->rdevmap[e]; 800 } else { 801 mc.type = AUDIO_MIXER_SET; 802 error = ioctlf(fp, AUDIO_MIXER_READ, (caddr_t)&mc, lwp); 803 if (error) 804 goto out; 805 e = opaque_to_enum(di, NULL, mc.un.mask); 806 if (e >= 0) 807 idat = 1 << di->rdevmap[e]; 808 } 809 break; 810 case OSS_SOUND_MIXER_READ_DEVMASK: 811 idat = di->devmask; 812 break; 813 case OSS_SOUND_MIXER_READ_RECMASK: 814 idat = di->recmask; 815 break; 816 case OSS_SOUND_MIXER_READ_STEREODEVS: 817 idat = di->stereomask; 818 break; 819 case OSS_SOUND_MIXER_READ_CAPS: 820 idat = di->caps; 821 break; 822 case OSS_SOUND_MIXER_WRITE_RECSRC: 823 case OSS_SOUND_MIXER_WRITE_R_RECSRC: 824 if (di->source == -1) { 825 error = EINVAL; 826 goto out; 827 } 828 mc.dev = di->source; 829 error = copyin(SCARG(uap, data), &idat, sizeof idat); 830 if (error) 831 goto out; 832 if (di->caps & OSS_SOUND_CAP_EXCL_INPUT) { 833 mc.type = AUDIO_MIXER_ENUM; 834 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) 835 if (idat & (1 << i)) 836 break; 837 if (i >= OSS_SOUND_MIXER_NRDEVICES || 838 di->devmap[i] == -1) { 839 error = EINVAL; 840 goto out; 841 } 842 mc.un.ord = enum_to_ord(di, di->devmap[i]); 843 } else { 844 mc.type = AUDIO_MIXER_SET; 845 mc.un.mask = 0; 846 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) { 847 if (idat & (1 << i)) { 848 if (di->devmap[i] == -1) { 849 error = EINVAL; 850 goto out; 851 } 852 mc.un.mask |= enum_to_mask(di, di->devmap[i]); 853 } 854 } 855 } 856 error = ioctlf(fp, AUDIO_MIXER_WRITE, (caddr_t)&mc, lwp); 857 goto out; 858 default: 859 if (OSS_MIXER_READ(OSS_SOUND_MIXER_FIRST) <= com && 860 com < OSS_MIXER_READ(OSS_SOUND_MIXER_NRDEVICES)) { 861 n = OSS_GET_DEV(com); 862 if (di->devmap[n] == -1) { 863 error = EINVAL; 864 goto out; 865 } 866 doread: 867 mc.dev = di->devmap[n]; 868 mc.type = AUDIO_MIXER_VALUE; 869 mc.un.value.num_channels = di->stereomask & (1<<n) ? 2 : 1; 870 error = ioctlf(fp, AUDIO_MIXER_READ, (caddr_t)&mc, lwp); 871 if (error) 872 goto out; 873 if (mc.un.value.num_channels != 2) { 874 l = r = mc.un.value.level[AUDIO_MIXER_LEVEL_MONO]; 875 } else { 876 l = mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT]; 877 r = mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT]; 878 } 879 idat = TO_OSSVOL(l) | (TO_OSSVOL(r) << 8); 880 DPRINTF(("OSS_MIXER_READ n=%d (dev=%d) l=%d, r=%d, idat=%04x\n", 881 n, di->devmap[n], l, r, idat)); 882 break; 883 } else if ((OSS_MIXER_WRITE_R(OSS_SOUND_MIXER_FIRST) <= com && 884 com < OSS_MIXER_WRITE_R(OSS_SOUND_MIXER_NRDEVICES)) || 885 (OSS_MIXER_WRITE(OSS_SOUND_MIXER_FIRST) <= com && 886 com < OSS_MIXER_WRITE(OSS_SOUND_MIXER_NRDEVICES))) { 887 n = OSS_GET_DEV(com); 888 if (di->devmap[n] == -1) { 889 error = EINVAL; 890 goto out; 891 } 892 error = copyin(SCARG(uap, data), &idat, sizeof idat); 893 if (error) 894 goto out; 895 l = FROM_OSSVOL( idat & 0xff); 896 r = FROM_OSSVOL((idat >> 8) & 0xff); 897 mc.dev = di->devmap[n]; 898 mc.type = AUDIO_MIXER_VALUE; 899 if (di->stereomask & (1<<n)) { 900 mc.un.value.num_channels = 2; 901 mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT] = l; 902 mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = r; 903 } else { 904 mc.un.value.num_channels = 1; 905 mc.un.value.level[AUDIO_MIXER_LEVEL_MONO] = (l+r)/2; 906 } 907 DPRINTF(("OSS_MIXER_WRITE n=%d (dev=%d) l=%d, r=%d, idat=%04x\n", 908 n, di->devmap[n], l, r, idat)); 909 error = ioctlf(fp, AUDIO_MIXER_WRITE, (caddr_t)&mc, lwp); 910 if (error) 911 goto out; 912 if (OSS_MIXER_WRITE(OSS_SOUND_MIXER_FIRST) <= com && 913 com < OSS_MIXER_WRITE(OSS_SOUND_MIXER_NRDEVICES)) { 914 error = 0; 915 goto out; 916 } 917 goto doread; 918 } else { 919 #ifdef AUDIO_DEBUG 920 printf("oss_audio: unknown mixer ioctl %04lx\n", com); 921 #endif 922 error = EINVAL; 923 goto out; 924 } 925 } 926 error = copyout(&idat, SCARG(uap, data), sizeof idat); 927 out: 928 FILE_UNUSE(fp, lwp); 929 return error; 930 } 931 932 /* Sequencer emulation */ 933 int 934 oss_ioctl_sequencer(l, uap, retval) 935 struct lwp *l; 936 struct oss_sys_ioctl_args /* { 937 syscallarg(int) fd; 938 syscallarg(u_long) com; 939 syscallarg(caddr_t) data; 940 } */ *uap; 941 register_t *retval; 942 { 943 struct proc *p = l->l_proc; 944 struct file *fp; 945 struct filedesc *fdp; 946 u_long com; 947 int idat, idat1; 948 struct synth_info si; 949 struct oss_synth_info osi; 950 struct oss_seq_event_rec oser; 951 int error; 952 int (*ioctlf)(struct file *, u_long, void *, struct lwp *); 953 954 fdp = p->p_fd; 955 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 956 return (EBADF); 957 958 FILE_USE(fp); 959 960 if ((fp->f_flag & (FREAD | FWRITE)) == 0) { 961 error = EBADF; 962 goto out; 963 } 964 965 com = SCARG(uap, com); 966 DPRINTF(("oss_ioctl_sequencer: com=%08lx\n", com)); 967 968 retval[0] = 0; 969 970 ioctlf = fp->f_ops->fo_ioctl; 971 switch (com) { 972 case OSS_SEQ_RESET: 973 error = ioctlf(fp, SEQUENCER_RESET, (caddr_t)&idat, l); 974 goto out; 975 case OSS_SEQ_SYNC: 976 error = ioctlf(fp, SEQUENCER_SYNC, (caddr_t)&idat, l); 977 goto out; 978 case OSS_SYNTH_INFO: 979 error = copyin(SCARG(uap, data), &osi, sizeof osi); 980 if (error) 981 goto out; 982 si.device = osi.device; 983 error = ioctlf(fp, SEQUENCER_INFO, (caddr_t)&si, l); 984 if (error) 985 goto out; 986 strncpy(osi.name, si.name, sizeof osi.name); 987 osi.device = si.device; 988 switch(si.synth_type) { 989 case SYNTH_TYPE_FM: 990 osi.synth_type = OSS_SYNTH_TYPE_FM; break; 991 case SYNTH_TYPE_SAMPLE: 992 osi.synth_type = OSS_SYNTH_TYPE_SAMPLE; break; 993 case SYNTH_TYPE_MIDI: 994 osi.synth_type = OSS_SYNTH_TYPE_MIDI; break; 995 default: 996 osi.synth_type = 0; break; 997 } 998 switch(si.synth_subtype) { 999 case SYNTH_SUB_FM_TYPE_ADLIB: 1000 osi.synth_subtype = OSS_FM_TYPE_ADLIB; break; 1001 case SYNTH_SUB_FM_TYPE_OPL3: 1002 osi.synth_subtype = OSS_FM_TYPE_OPL3; break; 1003 case SYNTH_SUB_MIDI_TYPE_MPU401: 1004 osi.synth_subtype = OSS_MIDI_TYPE_MPU401; break; 1005 case SYNTH_SUB_SAMPLE_TYPE_BASIC: 1006 osi.synth_subtype = OSS_SAMPLE_TYPE_BASIC; break; 1007 default: 1008 osi.synth_subtype = 0; break; 1009 } 1010 osi.perc_mode = 0; 1011 osi.nr_voices = si.nr_voices; 1012 osi.nr_drums = 0; 1013 osi.instr_bank_size = si.instr_bank_size; 1014 osi.capabilities = 0; 1015 if (si.capabilities & SYNTH_CAP_OPL3) 1016 osi.capabilities |= OSS_SYNTH_CAP_OPL3; 1017 if (si.capabilities & SYNTH_CAP_INPUT) 1018 osi.capabilities |= OSS_SYNTH_CAP_INPUT; 1019 error = copyout(&osi, SCARG(uap, data), sizeof osi); 1020 goto out; 1021 case OSS_SEQ_CTRLRATE: 1022 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1023 if (error) 1024 goto out; 1025 error = ioctlf(fp, SEQUENCER_CTRLRATE, (caddr_t)&idat, l); 1026 if (error) 1027 goto out; 1028 retval[0] = idat; 1029 break; 1030 case OSS_SEQ_GETOUTCOUNT: 1031 error = ioctlf(fp, SEQUENCER_GETOUTCOUNT, (caddr_t)&idat, l); 1032 if (error) 1033 goto out; 1034 retval[0] = idat; 1035 break; 1036 case OSS_SEQ_GETINCOUNT: 1037 error = ioctlf(fp, SEQUENCER_GETINCOUNT, (caddr_t)&idat, l); 1038 if (error) 1039 goto out; 1040 retval[0] = idat; 1041 break; 1042 case OSS_SEQ_NRSYNTHS: 1043 error = ioctlf(fp, SEQUENCER_NRSYNTHS, (caddr_t)&idat, l); 1044 if (error) 1045 goto out; 1046 retval[0] = idat; 1047 break; 1048 case OSS_SEQ_NRMIDIS: 1049 error = ioctlf(fp, SEQUENCER_NRMIDIS, (caddr_t)&idat, l); 1050 if (error) 1051 goto out; 1052 retval[0] = idat; 1053 break; 1054 case OSS_SEQ_THRESHOLD: 1055 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1056 if (error) 1057 goto out; 1058 error = ioctlf(fp, SEQUENCER_THRESHOLD, (caddr_t)&idat, l); 1059 goto out; 1060 case OSS_MEMAVL: 1061 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1062 if (error) 1063 goto out; 1064 error = ioctlf(fp, SEQUENCER_MEMAVL, (caddr_t)&idat, l); 1065 if (error) 1066 goto out; 1067 retval[0] = idat; 1068 break; 1069 case OSS_SEQ_PANIC: 1070 error = ioctlf(fp, SEQUENCER_PANIC, (caddr_t)&idat, l); 1071 goto out; 1072 case OSS_SEQ_OUTOFBAND: 1073 error = copyin(SCARG(uap, data), &oser, sizeof oser); 1074 if (error) 1075 goto out; 1076 error = ioctlf(fp, SEQUENCER_OUTOFBAND, (caddr_t)&oser, l); 1077 if (error) 1078 goto out; 1079 break; 1080 case OSS_SEQ_GETTIME: 1081 error = ioctlf(fp, SEQUENCER_GETTIME, (caddr_t)&idat, l); 1082 if (error) 1083 goto out; 1084 retval[0] = idat; 1085 break; 1086 case OSS_TMR_TIMEBASE: 1087 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1088 if (error) 1089 goto out; 1090 error = ioctlf(fp, SEQUENCER_TMR_TIMEBASE, (caddr_t)&idat, l); 1091 if (error) 1092 goto out; 1093 retval[0] = idat; 1094 break; 1095 case OSS_TMR_START: 1096 error = ioctlf(fp, SEQUENCER_TMR_START, (caddr_t)&idat, l); 1097 goto out; 1098 case OSS_TMR_STOP: 1099 error = ioctlf(fp, SEQUENCER_TMR_STOP, (caddr_t)&idat, l); 1100 goto out; 1101 case OSS_TMR_CONTINUE: 1102 error = ioctlf(fp, SEQUENCER_TMR_CONTINUE, (caddr_t)&idat, l); 1103 goto out; 1104 case OSS_TMR_TEMPO: 1105 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1106 if (error) 1107 goto out; 1108 error = ioctlf(fp, SEQUENCER_TMR_TEMPO, (caddr_t)&idat, l); 1109 if (error) 1110 goto out; 1111 retval[0] = idat; 1112 break; 1113 case OSS_TMR_SOURCE: 1114 error = copyin(SCARG(uap, data), &idat1, sizeof idat); 1115 if (error) 1116 goto out; 1117 idat = 0; 1118 if (idat1 & OSS_TMR_INTERNAL) idat |= SEQUENCER_TMR_INTERNAL; 1119 error = ioctlf(fp, SEQUENCER_TMR_SOURCE, (caddr_t)&idat, l); 1120 if (error) 1121 goto out; 1122 idat1 = idat; 1123 if (idat1 & SEQUENCER_TMR_INTERNAL) idat |= OSS_TMR_INTERNAL; 1124 retval[0] = idat; 1125 break; 1126 case OSS_TMR_METRONOME: 1127 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1128 if (error) 1129 goto out; 1130 error = ioctlf(fp, SEQUENCER_TMR_METRONOME, (caddr_t)&idat, l); 1131 goto out; 1132 case OSS_TMR_SELECT: 1133 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1134 if (error) 1135 goto out; 1136 retval[0] = idat; 1137 error = ioctlf(fp, SEQUENCER_TMR_SELECT, (caddr_t)&idat, l); 1138 goto out; 1139 default: 1140 error = EINVAL; 1141 goto out; 1142 } 1143 1144 error = copyout(&idat, SCARG(uap, data), sizeof idat); 1145 out: 1146 FILE_UNUSE(fp, l); 1147 return error; 1148 } 1149 1150 /* 1151 * Check that the blocksize is a power of 2 as OSS wants. 1152 * If not, set it to be. 1153 */ 1154 static void 1155 setblocksize(fp, info, l) 1156 struct file *fp; 1157 struct audio_info *info; 1158 struct lwp *l; 1159 { 1160 struct audio_info set; 1161 int s; 1162 1163 if (info->blocksize & (info->blocksize-1)) { 1164 for(s = 32; s < info->blocksize; s <<= 1) 1165 ; 1166 (void) fp->f_ops->fo_ioctl(fp, AUDIO_GETINFO, (caddr_t)&set, l); 1167 set.blocksize = s; 1168 fp->f_ops->fo_ioctl(fp, AUDIO_SETINFO, (caddr_t)&set, l); 1169 fp->f_ops->fo_ioctl(fp, AUDIO_GETINFO, (caddr_t)info, l); 1170 } 1171 } 1172
Indexes created Mon Sep 22 13:09:51 GMT 2025