ossaudio.c revision 1.57
1 /* $NetBSD: ossaudio.c,v 1.57 2007/09/18 19:49:53 mlelstv 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 1.57 2007/09/18 19:49:53 mlelstv 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/syscallargs.h> 52 53 #include <compat/ossaudio/ossaudio.h> 54 #include <compat/ossaudio/ossaudiovar.h> 55 56 #ifdef AUDIO_DEBUG 57 #define DPRINTF(x) if (ossdebug) printf x 58 int ossdebug = 0; 59 #else 60 #define DPRINTF(x) 61 #endif 62 63 #define TO_OSSVOL(x) (((x) * 100 + 127) / 255) 64 #define FROM_OSSVOL(x) ((((x) > 100 ? 100 : (x)) * 255 + 50) / 100) 65 66 static struct audiodevinfo *getdevinfo __P((struct file *, struct lwp *)); 67 static int opaque_to_enum(struct audiodevinfo *di, audio_mixer_name_t *label, int opq); 68 static int enum_to_ord(struct audiodevinfo *di, int enm); 69 static int enum_to_mask(struct audiodevinfo *di, int enm); 70 71 static void setblocksize __P((struct file *, struct audio_info *, struct lwp *)); 72 73 74 int 75 oss_ioctl_audio(l, uap, retval) 76 struct lwp *l; 77 struct oss_sys_ioctl_args /* { 78 syscallarg(int) fd; 79 syscallarg(u_long) com; 80 syscallarg(void *) data; 81 } */ *uap; 82 register_t *retval; 83 { 84 struct proc *p = l->l_proc; 85 struct file *fp; 86 struct filedesc *fdp; 87 u_long com; 88 struct audio_info tmpinfo; 89 struct audio_offset tmpoffs; 90 struct oss_audio_buf_info bufinfo; 91 struct oss_count_info cntinfo; 92 struct audio_encoding tmpenc; 93 u_int u; 94 int idat, idata; 95 int error = 0; 96 int (*ioctlf)(struct file *, u_long, void *, struct lwp *); 97 98 fdp = p->p_fd; 99 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 100 return (EBADF); 101 102 FILE_USE(fp); 103 104 if ((fp->f_flag & (FREAD | FWRITE)) == 0) { 105 error = EBADF; 106 goto out; 107 } 108 109 com = SCARG(uap, com); 110 DPRINTF(("oss_ioctl_audio: com=%08lx\n", com)); 111 112 retval[0] = 0; 113 114 ioctlf = fp->f_ops->fo_ioctl; 115 switch (com) { 116 case OSS_SNDCTL_DSP_RESET: 117 error = ioctlf(fp, AUDIO_FLUSH, (void *)0, l); 118 if (error) 119 goto out; 120 break; 121 case OSS_SNDCTL_DSP_SYNC: 122 error = ioctlf(fp, AUDIO_DRAIN, (void *)0, l); 123 if (error) 124 goto out; 125 break; 126 case OSS_SNDCTL_DSP_POST: 127 /* This call is merely advisory, and may be a nop. */ 128 break; 129 case OSS_SNDCTL_DSP_SPEED: 130 AUDIO_INITINFO(&tmpinfo); 131 error = copyin(SCARG(uap, data), &idat, sizeof idat); 132 if (error) 133 goto out; 134 tmpinfo.play.sample_rate = 135 tmpinfo.record.sample_rate = idat; 136 error = ioctlf(fp, AUDIO_SETINFO, (void *)&tmpinfo, l); 137 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_SPEED %d = %d\n", 138 idat, error)); 139 if (error) 140 goto out; 141 /* fall into ... */ 142 case OSS_SOUND_PCM_READ_RATE: 143 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 144 if (error) 145 goto out; 146 idat = tmpinfo.play.sample_rate; 147 error = copyout(&idat, SCARG(uap, data), sizeof idat); 148 if (error) 149 goto out; 150 break; 151 case OSS_SNDCTL_DSP_STEREO: 152 AUDIO_INITINFO(&tmpinfo); 153 error = copyin(SCARG(uap, data), &idat, sizeof idat); 154 if (error) 155 goto out; 156 tmpinfo.play.channels = 157 tmpinfo.record.channels = idat ? 2 : 1; 158 (void) ioctlf(fp, AUDIO_SETINFO, (void *)&tmpinfo, l); 159 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 160 if (error) 161 goto out; 162 idat = tmpinfo.play.channels - 1; 163 error = copyout(&idat, SCARG(uap, data), sizeof idat); 164 if (error) 165 goto out; 166 break; 167 case OSS_SNDCTL_DSP_GETBLKSIZE: 168 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 169 if (error) 170 goto out; 171 setblocksize(fp, &tmpinfo, l); 172 idat = tmpinfo.blocksize; 173 error = copyout(&idat, SCARG(uap, data), sizeof idat); 174 if (error) 175 goto out; 176 break; 177 case OSS_SNDCTL_DSP_SETFMT: 178 AUDIO_INITINFO(&tmpinfo); 179 error = copyin(SCARG(uap, data), &idat, sizeof idat); 180 if (error) 181 goto out; 182 switch (idat) { 183 case OSS_AFMT_MU_LAW: 184 tmpinfo.play.precision = 185 tmpinfo.record.precision = 8; 186 tmpinfo.play.encoding = 187 tmpinfo.record.encoding = AUDIO_ENCODING_ULAW; 188 break; 189 case OSS_AFMT_A_LAW: 190 tmpinfo.play.precision = 191 tmpinfo.record.precision = 8; 192 tmpinfo.play.encoding = 193 tmpinfo.record.encoding = AUDIO_ENCODING_ALAW; 194 break; 195 case OSS_AFMT_U8: 196 tmpinfo.play.precision = 197 tmpinfo.record.precision = 8; 198 tmpinfo.play.encoding = 199 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR; 200 break; 201 case OSS_AFMT_S8: 202 tmpinfo.play.precision = 203 tmpinfo.record.precision = 8; 204 tmpinfo.play.encoding = 205 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR; 206 break; 207 case OSS_AFMT_S16_LE: 208 tmpinfo.play.precision = 209 tmpinfo.record.precision = 16; 210 tmpinfo.play.encoding = 211 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_LE; 212 break; 213 case OSS_AFMT_S16_BE: 214 tmpinfo.play.precision = 215 tmpinfo.record.precision = 16; 216 tmpinfo.play.encoding = 217 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_BE; 218 break; 219 case OSS_AFMT_U16_LE: 220 tmpinfo.play.precision = 221 tmpinfo.record.precision = 16; 222 tmpinfo.play.encoding = 223 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_LE; 224 break; 225 case OSS_AFMT_U16_BE: 226 tmpinfo.play.precision = 227 tmpinfo.record.precision = 16; 228 tmpinfo.play.encoding = 229 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_BE; 230 break; 231 default: 232 error = EINVAL; 233 goto out; 234 } 235 (void) ioctlf(fp, AUDIO_SETINFO, (void *)&tmpinfo, l); 236 /* fall into ... */ 237 case OSS_SOUND_PCM_READ_BITS: 238 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 239 if (error) 240 goto out; 241 switch (tmpinfo.play.encoding) { 242 case AUDIO_ENCODING_ULAW: 243 idat = OSS_AFMT_MU_LAW; 244 break; 245 case AUDIO_ENCODING_ALAW: 246 idat = OSS_AFMT_A_LAW; 247 break; 248 case AUDIO_ENCODING_SLINEAR_LE: 249 if (tmpinfo.play.precision == 16) 250 idat = OSS_AFMT_S16_LE; 251 else 252 idat = OSS_AFMT_S8; 253 break; 254 case AUDIO_ENCODING_SLINEAR_BE: 255 if (tmpinfo.play.precision == 16) 256 idat = OSS_AFMT_S16_BE; 257 else 258 idat = OSS_AFMT_S8; 259 break; 260 case AUDIO_ENCODING_ULINEAR_LE: 261 if (tmpinfo.play.precision == 16) 262 idat = OSS_AFMT_U16_LE; 263 else 264 idat = OSS_AFMT_U8; 265 break; 266 case AUDIO_ENCODING_ULINEAR_BE: 267 if (tmpinfo.play.precision == 16) 268 idat = OSS_AFMT_U16_BE; 269 else 270 idat = OSS_AFMT_U8; 271 break; 272 case AUDIO_ENCODING_ADPCM: 273 idat = OSS_AFMT_IMA_ADPCM; 274 break; 275 } 276 error = copyout(&idat, SCARG(uap, data), sizeof idat); 277 if (error) 278 goto out; 279 break; 280 case OSS_SNDCTL_DSP_CHANNELS: 281 AUDIO_INITINFO(&tmpinfo); 282 error = copyin(SCARG(uap, data), &idat, sizeof idat); 283 if (error) 284 goto out; 285 tmpinfo.play.channels = 286 tmpinfo.record.channels = idat; 287 (void) ioctlf(fp, AUDIO_SETINFO, (void *)&tmpinfo, l); 288 /* fall into ... */ 289 case OSS_SOUND_PCM_READ_CHANNELS: 290 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 291 if (error) 292 goto out; 293 idat = tmpinfo.play.channels; 294 error = copyout(&idat, SCARG(uap, data), sizeof idat); 295 if (error) 296 goto out; 297 break; 298 case OSS_SOUND_PCM_WRITE_FILTER: 299 case OSS_SOUND_PCM_READ_FILTER: 300 error = EINVAL; /* XXX unimplemented */ 301 goto out; 302 case OSS_SNDCTL_DSP_SUBDIVIDE: 303 error = copyin(SCARG(uap, data), &idat, sizeof idat); 304 if (error) 305 goto out; 306 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 307 setblocksize(fp, &tmpinfo, l); 308 if (error) 309 goto out; 310 if (idat == 0) 311 idat = tmpinfo.play.buffer_size / tmpinfo.blocksize; 312 idat = (tmpinfo.play.buffer_size / idat) & -4; 313 AUDIO_INITINFO(&tmpinfo); 314 tmpinfo.blocksize = idat; 315 error = ioctlf(fp, AUDIO_SETINFO, (void *)&tmpinfo, l); 316 if (error) 317 goto out; 318 idat = tmpinfo.play.buffer_size / tmpinfo.blocksize; 319 error = copyout(&idat, SCARG(uap, data), sizeof idat); 320 if (error) 321 goto out; 322 break; 323 case OSS_SNDCTL_DSP_SETFRAGMENT: 324 AUDIO_INITINFO(&tmpinfo); 325 error = copyin(SCARG(uap, data), &idat, sizeof idat); 326 if (error) 327 goto out; 328 if ((idat & 0xffff) < 4 || (idat & 0xffff) > 17) { 329 error = EINVAL; 330 goto out; 331 } 332 tmpinfo.blocksize = 1 << (idat & 0xffff); 333 tmpinfo.hiwat = (idat >> 16) & 0x7fff; 334 DPRINTF(("oss_audio: SETFRAGMENT blksize=%d, hiwat=%d\n", 335 tmpinfo.blocksize, tmpinfo.hiwat)); 336 if (tmpinfo.hiwat == 0) /* 0 means set to max */ 337 tmpinfo.hiwat = 65536; 338 (void) ioctlf(fp, AUDIO_SETINFO, (void *)&tmpinfo, l); 339 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 340 if (error) 341 goto out; 342 u = tmpinfo.blocksize; 343 for(idat = 0; u > 1; idat++, u >>= 1) 344 ; 345 idat |= (tmpinfo.hiwat & 0x7fff) << 16; 346 error = copyout(&idat, SCARG(uap, data), sizeof idat); 347 if (error) 348 goto out; 349 break; 350 case OSS_SNDCTL_DSP_GETFMTS: 351 for(idat = 0, tmpenc.index = 0; 352 ioctlf(fp, AUDIO_GETENC, (void *)&tmpenc, l) == 0; 353 tmpenc.index++) { 354 switch(tmpenc.encoding) { 355 case AUDIO_ENCODING_ULAW: 356 idat |= OSS_AFMT_MU_LAW; 357 break; 358 case AUDIO_ENCODING_ALAW: 359 idat |= OSS_AFMT_A_LAW; 360 break; 361 case AUDIO_ENCODING_SLINEAR: 362 idat |= OSS_AFMT_S8; 363 break; 364 case AUDIO_ENCODING_SLINEAR_LE: 365 if (tmpenc.precision == 16) 366 idat |= OSS_AFMT_S16_LE; 367 else 368 idat |= OSS_AFMT_S8; 369 break; 370 case AUDIO_ENCODING_SLINEAR_BE: 371 if (tmpenc.precision == 16) 372 idat |= OSS_AFMT_S16_BE; 373 else 374 idat |= OSS_AFMT_S8; 375 break; 376 case AUDIO_ENCODING_ULINEAR: 377 idat |= OSS_AFMT_U8; 378 break; 379 case AUDIO_ENCODING_ULINEAR_LE: 380 if (tmpenc.precision == 16) 381 idat |= OSS_AFMT_U16_LE; 382 else 383 idat |= OSS_AFMT_U8; 384 break; 385 case AUDIO_ENCODING_ULINEAR_BE: 386 if (tmpenc.precision == 16) 387 idat |= OSS_AFMT_U16_BE; 388 else 389 idat |= OSS_AFMT_U8; 390 break; 391 case AUDIO_ENCODING_ADPCM: 392 idat |= OSS_AFMT_IMA_ADPCM; 393 break; 394 default: 395 break; 396 } 397 } 398 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETFMTS = %x\n", idat)); 399 error = copyout(&idat, SCARG(uap, data), sizeof idat); 400 if (error) 401 goto out; 402 break; 403 case OSS_SNDCTL_DSP_GETOSPACE: 404 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 405 if (error) 406 goto out; 407 setblocksize(fp, &tmpinfo, l); 408 bufinfo.fragsize = tmpinfo.blocksize; 409 bufinfo.fragments = tmpinfo.hiwat - 410 (tmpinfo.play.seek + tmpinfo.blocksize - 1) / 411 tmpinfo.blocksize; 412 bufinfo.fragstotal = tmpinfo.hiwat; 413 bufinfo.bytes = 414 tmpinfo.hiwat * tmpinfo.blocksize - tmpinfo.play.seek; 415 error = copyout(&bufinfo, SCARG(uap, data), sizeof bufinfo); 416 if (error) 417 goto out; 418 break; 419 case OSS_SNDCTL_DSP_GETISPACE: 420 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 421 if (error) 422 goto out; 423 setblocksize(fp, &tmpinfo, l); 424 bufinfo.fragsize = tmpinfo.blocksize; 425 bufinfo.fragments = tmpinfo.hiwat - 426 (tmpinfo.record.seek + tmpinfo.blocksize - 1) / 427 tmpinfo.blocksize; 428 bufinfo.fragstotal = tmpinfo.hiwat; 429 bufinfo.bytes = 430 tmpinfo.hiwat * tmpinfo.blocksize - tmpinfo.record.seek; 431 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETxSPACE = %d %d %d %d\n", 432 bufinfo.fragsize, bufinfo.fragments, 433 bufinfo.fragstotal, bufinfo.bytes)); 434 error = copyout(&bufinfo, SCARG(uap, data), sizeof bufinfo); 435 if (error) 436 goto out; 437 break; 438 case OSS_SNDCTL_DSP_NONBLOCK: 439 idat = 1; 440 error = ioctlf(fp, FIONBIO, (void *)&idat, l); 441 if (error) 442 goto out; 443 break; 444 case OSS_SNDCTL_DSP_GETCAPS: 445 error = ioctlf(fp, AUDIO_GETPROPS, (void *)&idata, l); 446 if (error) 447 goto out; 448 idat = OSS_DSP_CAP_TRIGGER; /* pretend we have trigger */ 449 if (idata & AUDIO_PROP_FULLDUPLEX) 450 idat |= OSS_DSP_CAP_DUPLEX; 451 if (idata & AUDIO_PROP_MMAP) 452 idat |= OSS_DSP_CAP_MMAP; 453 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETCAPS = %x\n", idat)); 454 error = copyout(&idat, SCARG(uap, data), sizeof idat); 455 if (error) 456 goto out; 457 break; 458 #if 0 459 case OSS_SNDCTL_DSP_GETTRIGGER: 460 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 461 if (error) 462 goto out; 463 idat = (tmpinfo.play.pause ? 0 : OSS_PCM_ENABLE_OUTPUT) | 464 (tmpinfo.record.pause ? 0 : OSS_PCM_ENABLE_INPUT); 465 error = copyout(&idat, SCARG(uap, data), sizeof idat); 466 if (error) 467 goto out; 468 break; 469 case OSS_SNDCTL_DSP_SETTRIGGER: 470 (void) ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, p); 471 error = copyin(SCARG(uap, data), &idat, sizeof idat); 472 if (error) 473 goto out; 474 tmpinfo.play.pause = (idat & OSS_PCM_ENABLE_OUTPUT) == 0; 475 tmpinfo.record.pause = (idat & OSS_PCM_ENABLE_INPUT) == 0; 476 (void) ioctlf(fp, AUDIO_SETINFO, (void *)&tmpinfo, l); 477 error = copyout(&idat, SCARG(uap, data), sizeof idat); 478 if (error) 479 goto out; 480 break; 481 #else 482 case OSS_SNDCTL_DSP_GETTRIGGER: 483 case OSS_SNDCTL_DSP_SETTRIGGER: 484 /* XXX Do nothing for now. */ 485 idat = OSS_PCM_ENABLE_OUTPUT; 486 error = copyout(&idat, SCARG(uap, data), sizeof idat); 487 goto out; 488 #endif 489 case OSS_SNDCTL_DSP_GETIPTR: 490 error = ioctlf(fp, AUDIO_GETIOFFS, (void *)&tmpoffs, l); 491 if (error) 492 goto out; 493 cntinfo.bytes = tmpoffs.samples; 494 cntinfo.blocks = tmpoffs.deltablks; 495 cntinfo.ptr = tmpoffs.offset; 496 error = copyout(&cntinfo, SCARG(uap, data), sizeof cntinfo); 497 if (error) 498 goto out; 499 break; 500 case OSS_SNDCTL_DSP_GETOPTR: 501 error = ioctlf(fp, AUDIO_GETOOFFS, (void *)&tmpoffs, l); 502 if (error) 503 goto out; 504 cntinfo.bytes = tmpoffs.samples; 505 cntinfo.blocks = tmpoffs.deltablks; 506 cntinfo.ptr = tmpoffs.offset; 507 error = copyout(&cntinfo, SCARG(uap, data), sizeof cntinfo); 508 if (error) 509 goto out; 510 break; 511 case OSS_SNDCTL_DSP_SETDUPLEX: 512 idat = 1; 513 error = ioctlf(fp, AUDIO_SETFD, (void *)&idat, l); 514 goto out; 515 case OSS_SNDCTL_DSP_MAPINBUF: 516 case OSS_SNDCTL_DSP_MAPOUTBUF: 517 case OSS_SNDCTL_DSP_SETSYNCRO: 518 error = EINVAL; 519 goto out; 520 case OSS_SNDCTL_DSP_GETODELAY: 521 error = ioctlf(fp, AUDIO_GETBUFINFO, (void *)&tmpinfo, l); 522 if (error) 523 goto out; 524 idat = tmpinfo.play.seek + tmpinfo.blocksize / 2; 525 error = copyout(&idat, SCARG(uap, data), sizeof idat); 526 if (error) 527 goto out; 528 break; 529 case OSS_SNDCTL_DSP_PROFILE: 530 /* This gives just a hint to the driver, 531 * implementing it as a NOP is ok 532 */ 533 break; 534 default: 535 error = EINVAL; 536 goto out; 537 } 538 539 out: 540 FILE_UNUSE(fp, l); 541 return error; 542 } 543 544 /* If the NetBSD mixer device should have more than 32 devices 545 * some will not be available to Linux */ 546 #define NETBSD_MAXDEVS 64 547 struct audiodevinfo { 548 int done; 549 dev_t dev; 550 int16_t devmap[OSS_SOUND_MIXER_NRDEVICES], 551 rdevmap[NETBSD_MAXDEVS]; 552 char names[NETBSD_MAXDEVS][MAX_AUDIO_DEV_LEN]; 553 int enum2opaque[NETBSD_MAXDEVS]; 554 u_long devmask, recmask, stereomask; 555 u_long caps, source; 556 }; 557 558 static int 559 opaque_to_enum(struct audiodevinfo *di, audio_mixer_name_t *label, int opq) 560 { 561 int i, o; 562 563 for (i = 0; i < NETBSD_MAXDEVS; i++) { 564 o = di->enum2opaque[i]; 565 if (o == opq) 566 break; 567 if (o == -1 && label != NULL && 568 !strncmp(di->names[i], label->name, sizeof di->names[i])) { 569 di->enum2opaque[i] = opq; 570 break; 571 } 572 } 573 if (i >= NETBSD_MAXDEVS) 574 i = -1; 575 /*printf("opq_to_enum %s %d -> %d\n", label->name, opq, i);*/ 576 return (i); 577 } 578 579 static int 580 enum_to_ord(struct audiodevinfo *di, int enm) 581 { 582 if (enm >= NETBSD_MAXDEVS) 583 return (-1); 584 585 /*printf("enum_to_ord %d -> %d\n", enm, di->enum2opaque[enm]);*/ 586 return (di->enum2opaque[enm]); 587 } 588 589 static int 590 enum_to_mask(struct audiodevinfo *di, int enm) 591 { 592 int m; 593 if (enm >= NETBSD_MAXDEVS) 594 return (0); 595 596 m = di->enum2opaque[enm]; 597 if (m == -1) 598 m = 0; 599 /*printf("enum_to_mask %d -> %d\n", enm, di->enum2opaque[enm]);*/ 600 return (m); 601 } 602 603 /* 604 * Collect the audio device information to allow faster 605 * emulation of the Linux mixer ioctls. Cache the information 606 * to eliminate the overhead of repeating all the ioctls needed 607 * to collect the information. 608 */ 609 static struct audiodevinfo * 610 getdevinfo(fp, l) 611 struct file *fp; 612 struct lwp *l; 613 { 614 mixer_devinfo_t mi; 615 int i, j, e; 616 static const struct { 617 const char *name; 618 int code; 619 } *dp, devs[] = { 620 { AudioNmicrophone, OSS_SOUND_MIXER_MIC }, 621 { AudioNline, OSS_SOUND_MIXER_LINE }, 622 { AudioNcd, OSS_SOUND_MIXER_CD }, 623 { AudioNdac, OSS_SOUND_MIXER_PCM }, 624 { AudioNaux, OSS_SOUND_MIXER_LINE1 }, 625 { AudioNrecord, OSS_SOUND_MIXER_IMIX }, 626 { AudioNmaster, OSS_SOUND_MIXER_VOLUME }, 627 { AudioNtreble, OSS_SOUND_MIXER_TREBLE }, 628 { AudioNbass, OSS_SOUND_MIXER_BASS }, 629 { AudioNspeaker, OSS_SOUND_MIXER_SPEAKER }, 630 /* { AudioNheadphone, ?? },*/ 631 { AudioNoutput, OSS_SOUND_MIXER_OGAIN }, 632 { AudioNinput, OSS_SOUND_MIXER_IGAIN }, 633 /* { AudioNmaster, OSS_SOUND_MIXER_SPEAKER },*/ 634 /* { AudioNstereo, ?? },*/ 635 /* { AudioNmono, ?? },*/ 636 { AudioNfmsynth, OSS_SOUND_MIXER_SYNTH }, 637 /* { AudioNwave, OSS_SOUND_MIXER_PCM },*/ 638 { AudioNmidi, OSS_SOUND_MIXER_SYNTH }, 639 /* { AudioNmixerout, ?? },*/ 640 { 0, -1 } 641 }; 642 int (*ioctlf)(struct file *, u_long, void *, struct lwp *) = 643 fp->f_ops->fo_ioctl; 644 struct vnode *vp; 645 struct vattr va; 646 static struct audiodevinfo devcache; 647 struct audiodevinfo *di = &devcache; 648 int mlen, dlen; 649 650 /* 651 * Figure out what device it is so we can check if the 652 * cached data is valid. 653 */ 654 vp = (struct vnode *)fp->f_data; 655 if (vp->v_type != VCHR) 656 return 0; 657 if (VOP_GETATTR(vp, &va, l->l_cred, l)) 658 return 0; 659 if (di->done && di->dev == va.va_rdev) 660 return di; 661 662 di->done = 1; 663 di->dev = va.va_rdev; 664 di->devmask = 0; 665 di->recmask = 0; 666 di->stereomask = 0; 667 di->source = ~0; 668 di->caps = 0; 669 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) 670 di->devmap[i] = -1; 671 for(i = 0; i < NETBSD_MAXDEVS; i++) { 672 di->rdevmap[i] = -1; 673 di->names[i][0] = '\0'; 674 di->enum2opaque[i] = -1; 675 } 676 for(i = 0; i < NETBSD_MAXDEVS; i++) { 677 mi.index = i; 678 if (ioctlf(fp, AUDIO_MIXER_DEVINFO, (void *)&mi, l) < 0) 679 break; 680 switch(mi.type) { 681 case AUDIO_MIXER_VALUE: 682 for(dp = devs; dp->name; dp++) { 683 if (strcmp(dp->name, mi.label.name) == 0) 684 break; 685 dlen = strlen(dp->name); 686 mlen = strlen(mi.label.name); 687 if (dlen < mlen 688 && mi.label.name[mlen-dlen-1] == '.' 689 && strcmp(dp->name, mi.label.name + mlen - dlen) == 0) 690 break; 691 } 692 if (dp->code >= 0) { 693 di->devmap[dp->code] = i; 694 di->rdevmap[i] = dp->code; 695 di->devmask |= 1 << dp->code; 696 if (mi.un.v.num_channels == 2) 697 di->stereomask |= 1 << dp->code; 698 strncpy(di->names[i], mi.label.name, 699 sizeof di->names[i]); 700 } 701 break; 702 } 703 } 704 for(i = 0; i < NETBSD_MAXDEVS; i++) { 705 mi.index = i; 706 if (ioctlf(fp, AUDIO_MIXER_DEVINFO, (void *)&mi, l) < 0) 707 break; 708 if (strcmp(mi.label.name, AudioNsource) != 0) 709 continue; 710 di->source = i; 711 switch(mi.type) { 712 case AUDIO_MIXER_ENUM: 713 for(j = 0; j < mi.un.e.num_mem; j++) { 714 e = opaque_to_enum(di, 715 &mi.un.e.member[j].label, 716 mi.un.e.member[j].ord); 717 if (e >= 0) 718 di->recmask |= 1 << di->rdevmap[e]; 719 } 720 di->caps = OSS_SOUND_CAP_EXCL_INPUT; 721 break; 722 case AUDIO_MIXER_SET: 723 for(j = 0; j < mi.un.s.num_mem; j++) { 724 e = opaque_to_enum(di, 725 &mi.un.s.member[j].label, 726 mi.un.s.member[j].mask); 727 if (e >= 0) 728 di->recmask |= 1 << di->rdevmap[e]; 729 } 730 break; 731 } 732 } 733 return di; 734 } 735 736 int 737 oss_ioctl_mixer(lwp, uap, retval) 738 struct lwp *lwp; 739 struct oss_sys_ioctl_args /* { 740 syscallarg(int) fd; 741 syscallarg(u_long) com; 742 syscallarg(void *) data; 743 } */ *uap; 744 register_t *retval; 745 { 746 struct proc *p = lwp->l_proc; 747 struct file *fp; 748 struct filedesc *fdp; 749 u_long com; 750 struct audiodevinfo *di; 751 mixer_ctrl_t mc; 752 struct oss_mixer_info omi; 753 struct audio_device adev; 754 int idat; 755 int i; 756 int error; 757 int l, r, n, e; 758 int (*ioctlf)(struct file *, u_long, void *, struct lwp *); 759 760 fdp = p->p_fd; 761 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 762 return (EBADF); 763 764 FILE_USE(fp); 765 766 if ((fp->f_flag & (FREAD | FWRITE)) == 0) { 767 error = EBADF; 768 goto out; 769 } 770 771 com = SCARG(uap, com); 772 DPRINTF(("oss_ioctl_mixer: com=%08lx\n", com)); 773 774 retval[0] = 0; 775 776 di = getdevinfo(fp, lwp); 777 if (di == 0) { 778 error = EINVAL; 779 goto out; 780 } 781 782 ioctlf = fp->f_ops->fo_ioctl; 783 switch (com) { 784 case OSS_GET_VERSION: 785 idat = OSS_SOUND_VERSION; 786 break; 787 case OSS_SOUND_MIXER_INFO: 788 case OSS_SOUND_OLD_MIXER_INFO: 789 error = ioctlf(fp, AUDIO_GETDEV, (void *)&adev, lwp); 790 if (error) 791 goto out; 792 omi.modify_counter = 1; 793 strncpy(omi.id, adev.name, sizeof omi.id); 794 strncpy(omi.name, adev.name, sizeof omi.name); 795 error = copyout(&omi, SCARG(uap, data), OSS_IOCTL_SIZE(com)); 796 goto out; 797 case OSS_SOUND_MIXER_READ_RECSRC: 798 if (di->source == -1) { 799 error = EINVAL; 800 goto out; 801 } 802 mc.dev = di->source; 803 if (di->caps & OSS_SOUND_CAP_EXCL_INPUT) { 804 mc.type = AUDIO_MIXER_ENUM; 805 error = ioctlf(fp, AUDIO_MIXER_READ, (void *)&mc, lwp); 806 if (error) 807 goto out; 808 e = opaque_to_enum(di, NULL, mc.un.ord); 809 if (e >= 0) 810 idat = 1 << di->rdevmap[e]; 811 } else { 812 mc.type = AUDIO_MIXER_SET; 813 error = ioctlf(fp, AUDIO_MIXER_READ, (void *)&mc, lwp); 814 if (error) 815 goto out; 816 e = opaque_to_enum(di, NULL, mc.un.mask); 817 if (e >= 0) 818 idat = 1 << di->rdevmap[e]; 819 } 820 break; 821 case OSS_SOUND_MIXER_READ_DEVMASK: 822 idat = di->devmask; 823 break; 824 case OSS_SOUND_MIXER_READ_RECMASK: 825 idat = di->recmask; 826 break; 827 case OSS_SOUND_MIXER_READ_STEREODEVS: 828 idat = di->stereomask; 829 break; 830 case OSS_SOUND_MIXER_READ_CAPS: 831 idat = di->caps; 832 break; 833 case OSS_SOUND_MIXER_WRITE_RECSRC: 834 case OSS_SOUND_MIXER_WRITE_R_RECSRC: 835 if (di->source == -1) { 836 error = EINVAL; 837 goto out; 838 } 839 mc.dev = di->source; 840 error = copyin(SCARG(uap, data), &idat, sizeof idat); 841 if (error) 842 goto out; 843 if (di->caps & OSS_SOUND_CAP_EXCL_INPUT) { 844 mc.type = AUDIO_MIXER_ENUM; 845 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) 846 if (idat & (1 << i)) 847 break; 848 if (i >= OSS_SOUND_MIXER_NRDEVICES || 849 di->devmap[i] == -1) { 850 error = EINVAL; 851 goto out; 852 } 853 mc.un.ord = enum_to_ord(di, di->devmap[i]); 854 } else { 855 mc.type = AUDIO_MIXER_SET; 856 mc.un.mask = 0; 857 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) { 858 if (idat & (1 << i)) { 859 if (di->devmap[i] == -1) { 860 error = EINVAL; 861 goto out; 862 } 863 mc.un.mask |= enum_to_mask(di, di->devmap[i]); 864 } 865 } 866 } 867 error = ioctlf(fp, AUDIO_MIXER_WRITE, (void *)&mc, lwp); 868 goto out; 869 default: 870 if (OSS_MIXER_READ(OSS_SOUND_MIXER_FIRST) <= com && 871 com < OSS_MIXER_READ(OSS_SOUND_MIXER_NRDEVICES)) { 872 n = OSS_GET_DEV(com); 873 if (di->devmap[n] == -1) { 874 error = EINVAL; 875 goto out; 876 } 877 doread: 878 mc.dev = di->devmap[n]; 879 mc.type = AUDIO_MIXER_VALUE; 880 mc.un.value.num_channels = di->stereomask & (1<<n) ? 2 : 1; 881 error = ioctlf(fp, AUDIO_MIXER_READ, (void *)&mc, lwp); 882 if (error) 883 goto out; 884 if (mc.un.value.num_channels != 2) { 885 l = r = mc.un.value.level[AUDIO_MIXER_LEVEL_MONO]; 886 } else { 887 l = mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT]; 888 r = mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT]; 889 } 890 idat = TO_OSSVOL(l) | (TO_OSSVOL(r) << 8); 891 DPRINTF(("OSS_MIXER_READ n=%d (dev=%d) l=%d, r=%d, idat=%04x\n", 892 n, di->devmap[n], l, r, idat)); 893 break; 894 } else if ((OSS_MIXER_WRITE_R(OSS_SOUND_MIXER_FIRST) <= com && 895 com < OSS_MIXER_WRITE_R(OSS_SOUND_MIXER_NRDEVICES)) || 896 (OSS_MIXER_WRITE(OSS_SOUND_MIXER_FIRST) <= com && 897 com < OSS_MIXER_WRITE(OSS_SOUND_MIXER_NRDEVICES))) { 898 n = OSS_GET_DEV(com); 899 if (di->devmap[n] == -1) { 900 error = EINVAL; 901 goto out; 902 } 903 error = copyin(SCARG(uap, data), &idat, sizeof idat); 904 if (error) 905 goto out; 906 l = FROM_OSSVOL( idat & 0xff); 907 r = FROM_OSSVOL((idat >> 8) & 0xff); 908 mc.dev = di->devmap[n]; 909 mc.type = AUDIO_MIXER_VALUE; 910 if (di->stereomask & (1<<n)) { 911 mc.un.value.num_channels = 2; 912 mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT] = l; 913 mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = r; 914 } else { 915 mc.un.value.num_channels = 1; 916 mc.un.value.level[AUDIO_MIXER_LEVEL_MONO] = (l+r)/2; 917 } 918 DPRINTF(("OSS_MIXER_WRITE n=%d (dev=%d) l=%d, r=%d, idat=%04x\n", 919 n, di->devmap[n], l, r, idat)); 920 error = ioctlf(fp, AUDIO_MIXER_WRITE, (void *)&mc, lwp); 921 if (error) 922 goto out; 923 if (OSS_MIXER_WRITE(OSS_SOUND_MIXER_FIRST) <= com && 924 com < OSS_MIXER_WRITE(OSS_SOUND_MIXER_NRDEVICES)) { 925 error = 0; 926 goto out; 927 } 928 goto doread; 929 } else { 930 #ifdef AUDIO_DEBUG 931 printf("oss_audio: unknown mixer ioctl %04lx\n", com); 932 #endif 933 error = EINVAL; 934 goto out; 935 } 936 } 937 error = copyout(&idat, SCARG(uap, data), sizeof idat); 938 out: 939 FILE_UNUSE(fp, lwp); 940 return error; 941 } 942 943 /* Sequencer emulation */ 944 int 945 oss_ioctl_sequencer(l, uap, retval) 946 struct lwp *l; 947 struct oss_sys_ioctl_args /* { 948 syscallarg(int) fd; 949 syscallarg(u_long) com; 950 syscallarg(void *) data; 951 } */ *uap; 952 register_t *retval; 953 { 954 struct proc *p = l->l_proc; 955 struct file *fp; 956 struct filedesc *fdp; 957 u_long com; 958 int idat, idat1; 959 struct synth_info si; 960 struct oss_synth_info osi; 961 struct oss_seq_event_rec oser; 962 int error; 963 int (*ioctlf)(struct file *, u_long, void *, struct lwp *); 964 965 fdp = p->p_fd; 966 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 967 return (EBADF); 968 969 FILE_USE(fp); 970 971 if ((fp->f_flag & (FREAD | FWRITE)) == 0) { 972 error = EBADF; 973 goto out; 974 } 975 976 com = SCARG(uap, com); 977 DPRINTF(("oss_ioctl_sequencer: com=%08lx\n", com)); 978 979 retval[0] = 0; 980 981 ioctlf = fp->f_ops->fo_ioctl; 982 switch (com) { 983 case OSS_SEQ_RESET: 984 error = ioctlf(fp, SEQUENCER_RESET, (void *)&idat, l); 985 goto out; 986 case OSS_SEQ_SYNC: 987 error = ioctlf(fp, SEQUENCER_SYNC, (void *)&idat, l); 988 goto out; 989 case OSS_SYNTH_INFO: 990 error = copyin(SCARG(uap, data), &osi, sizeof osi); 991 if (error) 992 goto out; 993 si.device = osi.device; 994 error = ioctlf(fp, SEQUENCER_INFO, (void *)&si, l); 995 if (error) 996 goto out; 997 strncpy(osi.name, si.name, sizeof osi.name); 998 osi.device = si.device; 999 switch(si.synth_type) { 1000 case SYNTH_TYPE_FM: 1001 osi.synth_type = OSS_SYNTH_TYPE_FM; break; 1002 case SYNTH_TYPE_SAMPLE: 1003 osi.synth_type = OSS_SYNTH_TYPE_SAMPLE; break; 1004 case SYNTH_TYPE_MIDI: 1005 osi.synth_type = OSS_SYNTH_TYPE_MIDI; break; 1006 default: 1007 osi.synth_type = 0; break; 1008 } 1009 switch(si.synth_subtype) { 1010 case SYNTH_SUB_FM_TYPE_ADLIB: 1011 osi.synth_subtype = OSS_FM_TYPE_ADLIB; break; 1012 case SYNTH_SUB_FM_TYPE_OPL3: 1013 osi.synth_subtype = OSS_FM_TYPE_OPL3; break; 1014 case SYNTH_SUB_MIDI_TYPE_MPU401: 1015 osi.synth_subtype = OSS_MIDI_TYPE_MPU401; break; 1016 case SYNTH_SUB_SAMPLE_TYPE_BASIC: 1017 osi.synth_subtype = OSS_SAMPLE_TYPE_BASIC; break; 1018 default: 1019 osi.synth_subtype = 0; break; 1020 } 1021 osi.perc_mode = 0; 1022 osi.nr_voices = si.nr_voices; 1023 osi.nr_drums = 0; 1024 osi.instr_bank_size = si.instr_bank_size; 1025 osi.capabilities = 0; 1026 if (si.capabilities & SYNTH_CAP_OPL3) 1027 osi.capabilities |= OSS_SYNTH_CAP_OPL3; 1028 if (si.capabilities & SYNTH_CAP_INPUT) 1029 osi.capabilities |= OSS_SYNTH_CAP_INPUT; 1030 error = copyout(&osi, SCARG(uap, data), sizeof osi); 1031 goto out; 1032 case OSS_SEQ_CTRLRATE: 1033 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1034 if (error) 1035 goto out; 1036 error = ioctlf(fp, SEQUENCER_CTRLRATE, (void *)&idat, l); 1037 if (error) 1038 goto out; 1039 retval[0] = idat; 1040 break; 1041 case OSS_SEQ_GETOUTCOUNT: 1042 error = ioctlf(fp, SEQUENCER_GETOUTCOUNT, (void *)&idat, l); 1043 if (error) 1044 goto out; 1045 retval[0] = idat; 1046 break; 1047 case OSS_SEQ_GETINCOUNT: 1048 error = ioctlf(fp, SEQUENCER_GETINCOUNT, (void *)&idat, l); 1049 if (error) 1050 goto out; 1051 retval[0] = idat; 1052 break; 1053 case OSS_SEQ_NRSYNTHS: 1054 error = ioctlf(fp, SEQUENCER_NRSYNTHS, (void *)&idat, l); 1055 if (error) 1056 goto out; 1057 retval[0] = idat; 1058 break; 1059 case OSS_SEQ_NRMIDIS: 1060 error = ioctlf(fp, SEQUENCER_NRMIDIS, (void *)&idat, l); 1061 if (error) 1062 goto out; 1063 retval[0] = idat; 1064 break; 1065 case OSS_SEQ_THRESHOLD: 1066 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1067 if (error) 1068 goto out; 1069 error = ioctlf(fp, SEQUENCER_THRESHOLD, (void *)&idat, l); 1070 goto out; 1071 case OSS_MEMAVL: 1072 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1073 if (error) 1074 goto out; 1075 error = ioctlf(fp, SEQUENCER_MEMAVL, (void *)&idat, l); 1076 if (error) 1077 goto out; 1078 retval[0] = idat; 1079 break; 1080 case OSS_SEQ_PANIC: 1081 error = ioctlf(fp, SEQUENCER_PANIC, (void *)&idat, l); 1082 goto out; 1083 case OSS_SEQ_OUTOFBAND: 1084 error = copyin(SCARG(uap, data), &oser, sizeof oser); 1085 if (error) 1086 goto out; 1087 error = ioctlf(fp, SEQUENCER_OUTOFBAND, (void *)&oser, l); 1088 if (error) 1089 goto out; 1090 break; 1091 case OSS_SEQ_GETTIME: 1092 error = ioctlf(fp, SEQUENCER_GETTIME, (void *)&idat, l); 1093 if (error) 1094 goto out; 1095 retval[0] = idat; 1096 break; 1097 case OSS_TMR_TIMEBASE: 1098 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1099 if (error) 1100 goto out; 1101 error = ioctlf(fp, SEQUENCER_TMR_TIMEBASE, (void *)&idat, l); 1102 if (error) 1103 goto out; 1104 retval[0] = idat; 1105 break; 1106 case OSS_TMR_START: 1107 error = ioctlf(fp, SEQUENCER_TMR_START, (void *)&idat, l); 1108 goto out; 1109 case OSS_TMR_STOP: 1110 error = ioctlf(fp, SEQUENCER_TMR_STOP, (void *)&idat, l); 1111 goto out; 1112 case OSS_TMR_CONTINUE: 1113 error = ioctlf(fp, SEQUENCER_TMR_CONTINUE, (void *)&idat, l); 1114 goto out; 1115 case OSS_TMR_TEMPO: 1116 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1117 if (error) 1118 goto out; 1119 error = ioctlf(fp, SEQUENCER_TMR_TEMPO, (void *)&idat, l); 1120 if (error) 1121 goto out; 1122 retval[0] = idat; 1123 break; 1124 case OSS_TMR_SOURCE: 1125 error = copyin(SCARG(uap, data), &idat1, sizeof idat); 1126 if (error) 1127 goto out; 1128 idat = 0; 1129 if (idat1 & OSS_TMR_INTERNAL) idat |= SEQUENCER_TMR_INTERNAL; 1130 error = ioctlf(fp, SEQUENCER_TMR_SOURCE, (void *)&idat, l); 1131 if (error) 1132 goto out; 1133 idat1 = idat; 1134 if (idat1 & SEQUENCER_TMR_INTERNAL) idat |= OSS_TMR_INTERNAL; 1135 retval[0] = idat; 1136 break; 1137 case OSS_TMR_METRONOME: 1138 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1139 if (error) 1140 goto out; 1141 error = ioctlf(fp, SEQUENCER_TMR_METRONOME, (void *)&idat, l); 1142 goto out; 1143 case OSS_TMR_SELECT: 1144 error = copyin(SCARG(uap, data), &idat, sizeof idat); 1145 if (error) 1146 goto out; 1147 retval[0] = idat; 1148 error = ioctlf(fp, SEQUENCER_TMR_SELECT, (void *)&idat, l); 1149 goto out; 1150 default: 1151 error = EINVAL; 1152 goto out; 1153 } 1154 1155 error = copyout(&idat, SCARG(uap, data), sizeof idat); 1156 out: 1157 FILE_UNUSE(fp, l); 1158 return error; 1159 } 1160 1161 /* 1162 * Check that the blocksize is a power of 2 as OSS wants. 1163 * If not, set it to be. 1164 */ 1165 static void 1166 setblocksize(fp, info, l) 1167 struct file *fp; 1168 struct audio_info *info; 1169 struct lwp *l; 1170 { 1171 struct audio_info set; 1172 int s; 1173 1174 if (info->blocksize & (info->blocksize-1)) { 1175 for(s = 32; s < info->blocksize; s <<= 1) 1176 ; 1177 AUDIO_INITINFO(&set); 1178 set.blocksize = s; 1179 fp->f_ops->fo_ioctl(fp, AUDIO_SETINFO, (void *)&set, l); 1180 fp->f_ops->fo_ioctl(fp, AUDIO_GETBUFINFO, (void *)info, l); 1181 } 1182 } 1183
Indexes created Wed Sep 24 05:09:52 GMT 2025