ossaudio.c revision 1.21
1 /* $NetBSD: ossaudio.c,v 1.21 1997/10/07 22:46:00 augustss Exp $ */ 2 #include <sys/param.h> 3 #include <sys/proc.h> 4 #include <sys/systm.h> 5 #include <sys/file.h> 6 #include <sys/vnode.h> 7 #include <sys/filedesc.h> 8 #include <sys/ioctl.h> 9 #include <sys/mount.h> 10 #include <sys/audioio.h> 11 12 #include <sys/syscallargs.h> 13 14 #include <compat/ossaudio/ossaudio.h> 15 #include <compat/ossaudio/ossaudiovar.h> 16 17 #ifdef AUDIO_DEBUG 18 #define DPRINTF(x) if (ossdebug) printf x 19 int ossdebug = 0; 20 #else 21 #define DPRINTF(x) 22 #endif 23 24 #define TO_OSSVOL(x) ((x) * 100 / 255) 25 #define FROM_OSSVOL(x) ((x) * 255 / 100) 26 27 static struct audiodevinfo *getdevinfo __P((struct file *, struct proc *)); 28 29 static void setblocksize __P((struct file *, struct audio_info *, struct proc *)); 30 31 32 int 33 oss_ioctl_audio(p, uap, retval) 34 struct proc *p; 35 struct oss_sys_ioctl_args /* { 36 syscallarg(int) fd; 37 syscallarg(u_long) com; 38 syscallarg(caddr_t) data; 39 } */ *uap; 40 register_t *retval; 41 { 42 struct file *fp; 43 struct filedesc *fdp; 44 u_long com; 45 struct audio_info tmpinfo; 46 struct audio_offset tmpoffs; 47 struct oss_audio_buf_info bufinfo; 48 struct oss_count_info cntinfo; 49 struct audio_encoding tmpenc; 50 u_int u; 51 int idat, idata; 52 int error; 53 int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *)); 54 55 fdp = p->p_fd; 56 if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles || 57 (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL) 58 return (EBADF); 59 60 if ((fp->f_flag & (FREAD | FWRITE)) == 0) 61 return (EBADF); 62 63 ioctlf = fp->f_ops->fo_ioctl; 64 65 com = SCARG(uap, com); 66 retval[0] = 0; 67 68 DPRINTF(("oss_sys_ioctl: com=%08lx\n", com)); 69 switch (com) { 70 case OSS_SNDCTL_DSP_RESET: 71 error = ioctlf(fp, AUDIO_FLUSH, (caddr_t)0, p); 72 if (error) 73 return error; 74 break; 75 case OSS_SNDCTL_DSP_SYNC: 76 case OSS_SNDCTL_DSP_POST: 77 error = ioctlf(fp, AUDIO_DRAIN, (caddr_t)0, p); 78 if (error) 79 return error; 80 break; 81 case OSS_SNDCTL_DSP_SPEED: 82 AUDIO_INITINFO(&tmpinfo); 83 error = copyin(SCARG(uap, data), &idat, sizeof idat); 84 if (error) 85 return error; 86 tmpinfo.play.sample_rate = 87 tmpinfo.record.sample_rate = idat; 88 error = ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, p); 89 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_SPEED %d = %d\n", 90 idat, error)); 91 if (error) 92 return error; 93 /* fall into ... */ 94 case OSS_SOUND_PCM_READ_RATE: 95 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 96 if (error) 97 return error; 98 idat = tmpinfo.play.sample_rate; 99 error = copyout(&idat, SCARG(uap, data), sizeof idat); 100 if (error) 101 return error; 102 break; 103 case OSS_SNDCTL_DSP_STEREO: 104 AUDIO_INITINFO(&tmpinfo); 105 error = copyin(SCARG(uap, data), &idat, sizeof idat); 106 if (error) 107 return error; 108 tmpinfo.play.channels = 109 tmpinfo.record.channels = idat ? 2 : 1; 110 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, p); 111 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 112 if (error) 113 return error; 114 idat = tmpinfo.play.channels - 1; 115 error = copyout(&idat, SCARG(uap, data), sizeof idat); 116 if (error) 117 return error; 118 break; 119 case OSS_SNDCTL_DSP_GETBLKSIZE: 120 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 121 if (error) 122 return error; 123 setblocksize(fp, &tmpinfo, p); 124 idat = tmpinfo.blocksize; 125 error = copyout(&idat, SCARG(uap, data), sizeof idat); 126 if (error) 127 return error; 128 break; 129 case OSS_SNDCTL_DSP_SETFMT: 130 AUDIO_INITINFO(&tmpinfo); 131 error = copyin(SCARG(uap, data), &idat, sizeof idat); 132 if (error) 133 return error; 134 switch (idat) { 135 case OSS_AFMT_MU_LAW: 136 tmpinfo.play.precision = 137 tmpinfo.record.precision = 8; 138 tmpinfo.play.encoding = 139 tmpinfo.record.encoding = AUDIO_ENCODING_ULAW; 140 break; 141 case OSS_AFMT_A_LAW: 142 tmpinfo.play.precision = 143 tmpinfo.record.precision = 8; 144 tmpinfo.play.encoding = 145 tmpinfo.record.encoding = AUDIO_ENCODING_ALAW; 146 break; 147 case OSS_AFMT_U8: 148 tmpinfo.play.precision = 149 tmpinfo.record.precision = 8; 150 tmpinfo.play.encoding = 151 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR; 152 break; 153 case OSS_AFMT_S8: 154 tmpinfo.play.precision = 155 tmpinfo.record.precision = 8; 156 tmpinfo.play.encoding = 157 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR; 158 break; 159 case OSS_AFMT_S16_LE: 160 tmpinfo.play.precision = 161 tmpinfo.record.precision = 16; 162 tmpinfo.play.encoding = 163 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_LE; 164 break; 165 case OSS_AFMT_S16_BE: 166 tmpinfo.play.precision = 167 tmpinfo.record.precision = 16; 168 tmpinfo.play.encoding = 169 tmpinfo.record.encoding = AUDIO_ENCODING_SLINEAR_BE; 170 break; 171 case OSS_AFMT_U16_LE: 172 tmpinfo.play.precision = 173 tmpinfo.record.precision = 16; 174 tmpinfo.play.encoding = 175 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_LE; 176 break; 177 case OSS_AFMT_U16_BE: 178 tmpinfo.play.precision = 179 tmpinfo.record.precision = 16; 180 tmpinfo.play.encoding = 181 tmpinfo.record.encoding = AUDIO_ENCODING_ULINEAR_BE; 182 break; 183 default: 184 return EINVAL; 185 } 186 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, p); 187 /* fall into ... */ 188 case OSS_SOUND_PCM_READ_BITS: 189 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 190 if (error) 191 return error; 192 switch (tmpinfo.play.encoding) { 193 case AUDIO_ENCODING_ULAW: 194 idat = OSS_AFMT_MU_LAW; 195 break; 196 case AUDIO_ENCODING_ALAW: 197 idat = OSS_AFMT_A_LAW; 198 break; 199 case AUDIO_ENCODING_SLINEAR_LE: 200 if (tmpinfo.play.precision == 16) 201 idat = OSS_AFMT_S16_LE; 202 else 203 idat = OSS_AFMT_S8; 204 break; 205 case AUDIO_ENCODING_SLINEAR_BE: 206 if (tmpinfo.play.precision == 16) 207 idat = OSS_AFMT_S16_BE; 208 else 209 idat = OSS_AFMT_S8; 210 break; 211 case AUDIO_ENCODING_ULINEAR_LE: 212 if (tmpinfo.play.precision == 16) 213 idat = OSS_AFMT_U16_LE; 214 else 215 idat = OSS_AFMT_U8; 216 break; 217 case AUDIO_ENCODING_ULINEAR_BE: 218 if (tmpinfo.play.precision == 16) 219 idat = OSS_AFMT_U16_BE; 220 else 221 idat = OSS_AFMT_U8; 222 break; 223 case AUDIO_ENCODING_ADPCM: 224 idat = OSS_AFMT_IMA_ADPCM; 225 break; 226 } 227 error = copyout(&idat, SCARG(uap, data), sizeof idat); 228 if (error) 229 return error; 230 break; 231 case OSS_SNDCTL_DSP_CHANNELS: 232 AUDIO_INITINFO(&tmpinfo); 233 error = copyin(SCARG(uap, data), &idat, sizeof idat); 234 if (error) 235 return error; 236 tmpinfo.play.channels = 237 tmpinfo.record.channels = idat; 238 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, p); 239 /* fall into ... */ 240 case OSS_SOUND_PCM_READ_CHANNELS: 241 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 242 if (error) 243 return error; 244 idat = tmpinfo.play.channels; 245 error = copyout(&idat, SCARG(uap, data), sizeof idat); 246 if (error) 247 return error; 248 break; 249 case OSS_SOUND_PCM_WRITE_FILTER: 250 case OSS_SOUND_PCM_READ_FILTER: 251 return EINVAL; /* XXX unimplemented */ 252 case OSS_SNDCTL_DSP_SUBDIVIDE: 253 error = copyin(SCARG(uap, data), &idat, sizeof idat); 254 if (error) 255 return error; 256 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 257 setblocksize(fp, &tmpinfo, p); 258 if (error) 259 return error; 260 if (idat == 0) 261 idat = tmpinfo.buffersize / tmpinfo.blocksize; 262 idat = (tmpinfo.buffersize / idat) & -4; 263 AUDIO_INITINFO(&tmpinfo); 264 tmpinfo.blocksize = idat; 265 error = ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, p); 266 if (error) 267 return error; 268 idat = tmpinfo.buffersize / tmpinfo.blocksize; 269 error = copyout(&idat, SCARG(uap, data), sizeof idat); 270 if (error) 271 return error; 272 break; 273 case OSS_SNDCTL_DSP_SETFRAGMENT: 274 AUDIO_INITINFO(&tmpinfo); 275 error = copyin(SCARG(uap, data), &idat, sizeof idat); 276 if (error) 277 return error; 278 if ((idat & 0xffff) < 4 || (idat & 0xffff) > 17) 279 return EINVAL; 280 tmpinfo.blocksize = 1 << (idat & 0xffff); 281 tmpinfo.hiwat = (idat >> 16) & 0xffff; 282 DPRINTF(("oss_audio: SETFRAGMENT blksize=%d, hiwat=%d\n", 283 tmpinfo.blocksize, tmpinfo.hiwat)); 284 if (tmpinfo.hiwat == 0) /* 0 means set to max */ 285 tmpinfo.hiwat = 65536; 286 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, p); 287 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 288 if (error) 289 return error; 290 u = tmpinfo.blocksize; 291 for(idat = 0; u; idat++, u >>= 1) 292 ; 293 idat |= (tmpinfo.hiwat & 0xffff) << 16; 294 error = copyout(&idat, SCARG(uap, data), sizeof idat); 295 if (error) 296 return error; 297 break; 298 case OSS_SNDCTL_DSP_GETFMTS: 299 for(idat = 0, tmpenc.index = 0; 300 ioctlf(fp, AUDIO_GETENC, (caddr_t)&tmpenc, p) == 0; 301 tmpenc.index++) { 302 if (tmpenc.flags & AUDIO_ENCODINGFLAG_EMULATED) 303 continue; /* Don't report emulated modes */ 304 switch(tmpenc.encoding) { 305 case AUDIO_ENCODING_ULAW: 306 idat |= OSS_AFMT_MU_LAW; 307 break; 308 case AUDIO_ENCODING_ALAW: 309 idat |= OSS_AFMT_A_LAW; 310 break; 311 case AUDIO_ENCODING_SLINEAR: 312 idat |= OSS_AFMT_S8; 313 break; 314 case AUDIO_ENCODING_SLINEAR_LE: 315 if (tmpenc.precision == 16) 316 idat |= OSS_AFMT_S16_LE; 317 else 318 idat |= OSS_AFMT_S8; 319 break; 320 case AUDIO_ENCODING_SLINEAR_BE: 321 if (tmpenc.precision == 16) 322 idat |= OSS_AFMT_S16_BE; 323 else 324 idat |= OSS_AFMT_S8; 325 break; 326 case AUDIO_ENCODING_ULINEAR: 327 idat |= OSS_AFMT_U8; 328 break; 329 case AUDIO_ENCODING_ULINEAR_LE: 330 if (tmpenc.precision == 16) 331 idat |= OSS_AFMT_U16_LE; 332 else 333 idat |= OSS_AFMT_U8; 334 break; 335 case AUDIO_ENCODING_ULINEAR_BE: 336 if (tmpenc.precision == 16) 337 idat |= OSS_AFMT_U16_BE; 338 else 339 idat |= OSS_AFMT_U8; 340 break; 341 case AUDIO_ENCODING_ADPCM: 342 idat |= OSS_AFMT_IMA_ADPCM; 343 break; 344 default: 345 break; 346 } 347 } 348 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETFMTS = %x\n", idat)); 349 error = copyout(&idat, SCARG(uap, data), sizeof idat); 350 if (error) 351 return error; 352 break; 353 case OSS_SNDCTL_DSP_GETOSPACE: 354 case OSS_SNDCTL_DSP_GETISPACE: 355 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 356 if (error) 357 return error; 358 setblocksize(fp, &tmpinfo, p); 359 bufinfo.fragsize = tmpinfo.blocksize; 360 bufinfo.fragments = /* XXX */ 361 bufinfo.fragstotal = tmpinfo.buffersize / bufinfo.fragsize; 362 bufinfo.bytes = tmpinfo.buffersize; 363 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETxSPACE = %d %d %d %d\n", 364 bufinfo.fragsize, bufinfo.fragments, 365 bufinfo.fragstotal, bufinfo.bytes)); 366 error = copyout(&bufinfo, SCARG(uap, data), sizeof bufinfo); 367 if (error) 368 return error; 369 break; 370 case OSS_SNDCTL_DSP_NONBLOCK: 371 idat = 1; 372 error = ioctlf(fp, FIONBIO, (caddr_t)&idat, p); 373 if (error) 374 return error; 375 break; 376 case OSS_SNDCTL_DSP_GETCAPS: 377 error = ioctlf(fp, AUDIO_GETPROPS, (caddr_t)&idata, p); 378 if (error) 379 return error; 380 idat = OSS_DSP_CAP_TRIGGER; /* pretend we have trigger */ 381 if (idata & AUDIO_PROP_FULLDUPLEX) 382 idat |= OSS_DSP_CAP_DUPLEX; 383 if (idata & AUDIO_PROP_MMAP) 384 idat |= OSS_DSP_CAP_MMAP; 385 DPRINTF(("oss_sys_ioctl: SNDCTL_DSP_GETCAPS = %x\n", idat)); 386 error = copyout(&idat, SCARG(uap, data), sizeof idat); 387 if (error) 388 return error; 389 break; 390 #if 0 391 case OSS_SNDCTL_DSP_GETTRIGGER: 392 error = ioctlf(fp, AUDIO_GETINFO, (caddr_t)&tmpinfo, p); 393 if (error) 394 return error; 395 idat = (tmpinfo.play.pause ? 0 : OSS_PCM_ENABLE_OUTPUT) | 396 (tmpinfo.record.pause ? 0 : OSS_PCM_ENABLE_INPUT); 397 error = copyout(&idat, SCARG(uap, data), sizeof idat); 398 if (error) 399 return error; 400 break; 401 case OSS_SNDCTL_DSP_SETTRIGGER: 402 AUDIO_INITINFO(&tmpinfo); 403 error = copyin(SCARG(uap, data), &idat, sizeof idat); 404 if (error) 405 return error; 406 tmpinfo.play.pause = (idat & OSS_PCM_ENABLE_OUTPUT) == 0; 407 tmpinfo.record.pause = (idat & OSS_PCM_ENABLE_INPUT) == 0; 408 (void) ioctlf(fp, AUDIO_SETINFO, (caddr_t)&tmpinfo, p); 409 error = copyout(&idat, SCARG(uap, data), sizeof idat); 410 if (error) 411 return error; 412 break; 413 #else 414 case OSS_SNDCTL_DSP_GETTRIGGER: 415 case OSS_SNDCTL_DSP_SETTRIGGER: 416 /* XXX Do nothing for now. */ 417 idat = OSS_PCM_ENABLE_OUTPUT; 418 return copyout(&idat, SCARG(uap, data), sizeof idat); 419 #endif 420 case OSS_SNDCTL_DSP_GETIPTR: 421 error = ioctlf(fp, AUDIO_GETIOFFS, (caddr_t)&tmpoffs, p); 422 if (error) 423 return error; 424 cntinfo.bytes = tmpoffs.samples; 425 cntinfo.blocks = tmpoffs.deltablks; 426 cntinfo.ptr = tmpoffs.offset; 427 error = copyout(&cntinfo, SCARG(uap, data), sizeof cntinfo); 428 if (error) 429 return error; 430 break; 431 case OSS_SNDCTL_DSP_GETOPTR: 432 error = ioctlf(fp, AUDIO_GETOOFFS, (caddr_t)&tmpoffs, p); 433 if (error) 434 return error; 435 cntinfo.bytes = tmpoffs.samples; 436 cntinfo.blocks = tmpoffs.deltablks; 437 cntinfo.ptr = tmpoffs.offset; 438 error = copyout(&cntinfo, SCARG(uap, data), sizeof cntinfo); 439 if (error) 440 return error; 441 break; 442 case OSS_SNDCTL_DSP_MAPINBUF: 443 case OSS_SNDCTL_DSP_MAPOUTBUF: 444 case OSS_SNDCTL_DSP_SETSYNCRO: 445 case OSS_SNDCTL_DSP_SETDUPLEX: 446 case OSS_SNDCTL_DSP_PROFILE: 447 return EINVAL; /* XXX unimplemented */ 448 default: 449 return EINVAL; 450 } 451 452 return 0; 453 } 454 455 /* If the NetBSD mixer device should have more than 32 devices 456 * some will not be available to Linux */ 457 #define NETBSD_MAXDEVS 64 458 struct audiodevinfo { 459 int done; 460 dev_t dev; 461 int16_t devmap[OSS_SOUND_MIXER_NRDEVICES], 462 rdevmap[NETBSD_MAXDEVS]; 463 u_long devmask, recmask, stereomask; 464 u_long caps, source; 465 }; 466 467 /* 468 * Collect the audio device information to allow faster 469 * emulation of the Linux mixer ioctls. Cache the information 470 * to eliminate the overhead of repeating all the ioctls needed 471 * to collect the information. 472 */ 473 static struct audiodevinfo * 474 getdevinfo(fp, p) 475 struct file *fp; 476 struct proc *p; 477 { 478 mixer_devinfo_t mi; 479 int i; 480 static struct { 481 char *name; 482 int code; 483 } *dp, devs[] = { 484 { AudioNmicrophone, OSS_SOUND_MIXER_MIC }, 485 { AudioNline, OSS_SOUND_MIXER_LINE }, 486 { AudioNcd, OSS_SOUND_MIXER_CD }, 487 { AudioNdac, OSS_SOUND_MIXER_PCM }, 488 { AudioNrecord, OSS_SOUND_MIXER_IMIX }, 489 { AudioNmaster, OSS_SOUND_MIXER_VOLUME }, 490 { AudioNtreble, OSS_SOUND_MIXER_TREBLE }, 491 { AudioNbass, OSS_SOUND_MIXER_BASS }, 492 { AudioNspeaker, OSS_SOUND_MIXER_SPEAKER }, 493 /* { AudioNheadphone, ?? },*/ 494 { AudioNoutput, OSS_SOUND_MIXER_OGAIN }, 495 { AudioNinput, OSS_SOUND_MIXER_IGAIN }, 496 /* { AudioNmaster, OSS_SOUND_MIXER_SPEAKER },*/ 497 /* { AudioNstereo, ?? },*/ 498 /* { AudioNmono, ?? },*/ 499 { AudioNfmsynth, OSS_SOUND_MIXER_SYNTH }, 500 /* { AudioNwave, OSS_SOUND_MIXER_PCM },*/ 501 { AudioNmidi, OSS_SOUND_MIXER_SYNTH }, 502 /* { AudioNmixerout, ?? },*/ 503 { 0, -1 } 504 }; 505 int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *)) = 506 fp->f_ops->fo_ioctl; 507 struct vnode *vp; 508 struct vattr va; 509 static struct audiodevinfo devcache = { 0 }; 510 struct audiodevinfo *di = &devcache; 511 512 /* Figure out what device it is so we can check if the 513 * cached data is valid. 514 */ 515 vp = (struct vnode *)fp->f_data; 516 if (vp->v_type != VCHR) 517 return 0; 518 if (VOP_GETATTR(vp, &va, p->p_ucred, p)) 519 return 0; 520 if (di->done && di->dev == va.va_rdev) 521 return di; 522 523 di->done = 1; 524 di->dev = va.va_rdev; 525 di->devmask = 0; 526 di->recmask = 0; 527 di->stereomask = 0; 528 di->source = -1; 529 di->caps = 0; 530 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) 531 di->devmap[i] = -1; 532 for(i = 0; i < NETBSD_MAXDEVS; i++) 533 di->rdevmap[i] = -1; 534 for(i = 0; i < NETBSD_MAXDEVS; i++) { 535 mi.index = i; 536 if (ioctlf(fp, AUDIO_MIXER_DEVINFO, (caddr_t)&mi, p) < 0) 537 break; 538 switch(mi.type) { 539 case AUDIO_MIXER_VALUE: 540 for(dp = devs; dp->name; dp++) 541 if (strcmp(dp->name, mi.label.name) == 0) 542 break; 543 if (dp->code >= 0) { 544 di->devmap[dp->code] = i; 545 di->rdevmap[i] = dp->code; 546 di->devmask |= 1 << dp->code; 547 if (mi.un.v.num_channels == 2) 548 di->stereomask |= 1 << dp->code; 549 } 550 break; 551 case AUDIO_MIXER_ENUM: 552 if (strcmp(mi.label.name, AudioNsource) == 0) { 553 int j; 554 di->source = i; 555 for(j = 0; j < mi.un.e.num_mem; j++) 556 di->recmask |= 1 << di->rdevmap[mi.un.e.member[j].ord]; 557 di->caps = OSS_SOUND_CAP_EXCL_INPUT; 558 } 559 break; 560 case AUDIO_MIXER_SET: 561 if (strcmp(mi.label.name, AudioNsource) == 0) { 562 int j; 563 di->source = i; 564 for(j = 0; j < mi.un.s.num_mem; j++) { 565 int k, mask = mi.un.s.member[j].mask; 566 if (mask) { 567 for(k = 0; !(mask & 1); mask >>= 1, k++) 568 ; 569 di->recmask |= 1 << di->rdevmap[k]; 570 } 571 } 572 } 573 break; 574 } 575 } 576 return di; 577 } 578 579 int 580 oss_ioctl_mixer(p, uap, retval) 581 struct proc *p; 582 struct oss_sys_ioctl_args /* { 583 syscallarg(int) fd; 584 syscallarg(u_long) com; 585 syscallarg(caddr_t) data; 586 } */ *uap; 587 register_t *retval; 588 { 589 struct file *fp; 590 struct filedesc *fdp; 591 u_long com; 592 struct audiodevinfo *di; 593 mixer_ctrl_t mc; 594 int idat; 595 int i; 596 int error; 597 int l, r, n; 598 int (*ioctlf) __P((struct file *, u_long, caddr_t, struct proc *)); 599 600 fdp = p->p_fd; 601 if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles || 602 (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL) 603 return (EBADF); 604 605 if ((fp->f_flag & (FREAD | FWRITE)) == 0) 606 return (EBADF); 607 608 com = SCARG(uap, com); 609 retval[0] = 0; 610 611 di = getdevinfo(fp, p); 612 if (di == 0) 613 return EINVAL; 614 615 ioctlf = fp->f_ops->fo_ioctl; 616 switch (com) { 617 case OSS_SOUND_MIXER_READ_RECSRC: 618 if (di->source == -1) 619 return EINVAL; 620 mc.dev = di->source; 621 if (di->caps & OSS_SOUND_CAP_EXCL_INPUT) { 622 mc.type = AUDIO_MIXER_ENUM; 623 error = ioctlf(fp, AUDIO_MIXER_READ, (caddr_t)&mc, p); 624 if (error) 625 return error; 626 idat = 1 << di->rdevmap[mc.un.ord]; 627 } else { 628 int k; 629 unsigned int mask; 630 mc.type = AUDIO_MIXER_SET; 631 error = ioctlf(fp, AUDIO_MIXER_READ, (caddr_t)&mc, p); 632 if (error) 633 return error; 634 idat = 0; 635 for(mask = mc.un.mask, k = 0; mask; mask >>= 1, k++) 636 if (mask & 1) 637 idat |= 1 << di->rdevmap[k]; 638 } 639 break; 640 case OSS_SOUND_MIXER_READ_DEVMASK: 641 idat = di->devmask; 642 break; 643 case OSS_SOUND_MIXER_READ_RECMASK: 644 idat = di->recmask; 645 break; 646 case OSS_SOUND_MIXER_READ_STEREODEVS: 647 idat = di->stereomask; 648 break; 649 case OSS_SOUND_MIXER_READ_CAPS: 650 idat = di->caps; 651 break; 652 case OSS_SOUND_MIXER_WRITE_RECSRC: 653 case OSS_SOUND_MIXER_WRITE_R_RECSRC: 654 if (di->source == -1) 655 return EINVAL; 656 mc.dev = di->source; 657 error = copyin(SCARG(uap, data), &idat, sizeof idat); 658 if (error) 659 return error; 660 if (di->caps & OSS_SOUND_CAP_EXCL_INPUT) { 661 mc.type = AUDIO_MIXER_ENUM; 662 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) 663 if (idat & (1 << i)) 664 break; 665 if (i >= OSS_SOUND_MIXER_NRDEVICES || 666 di->devmap[i] == -1) 667 return EINVAL; 668 mc.un.ord = di->devmap[i]; 669 } else { 670 mc.type = AUDIO_MIXER_SET; 671 mc.un.mask = 0; 672 for(i = 0; i < OSS_SOUND_MIXER_NRDEVICES; i++) { 673 if (idat & (1 << i)) { 674 if (di->devmap[i] == -1) 675 return EINVAL; 676 mc.un.mask |= 1 << di->devmap[i]; 677 } 678 } 679 } 680 return ioctlf(fp, AUDIO_MIXER_WRITE, (caddr_t)&mc, p); 681 default: 682 if (OSS_MIXER_READ(OSS_SOUND_MIXER_FIRST) <= com && 683 com < OSS_MIXER_READ(OSS_SOUND_MIXER_NRDEVICES)) { 684 n = OSS_GET_DEV(com); 685 if (di->devmap[n] == -1) 686 return EINVAL; 687 doread: 688 mc.dev = di->devmap[n]; 689 mc.type = AUDIO_MIXER_VALUE; 690 mc.un.value.num_channels = di->stereomask & (1<<n) ? 2 : 1; 691 error = ioctlf(fp, AUDIO_MIXER_READ, (caddr_t)&mc, p); 692 if (error) 693 return error; 694 if (mc.un.value.num_channels != 2) { 695 l = r = mc.un.value.level[AUDIO_MIXER_LEVEL_MONO]; 696 } else { 697 l = mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT]; 698 r = mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT]; 699 } 700 idat = TO_OSSVOL(l) | (TO_OSSVOL(r) << 8); 701 DPRINTF(("OSS_MIXER_READ n=%d (dev=%d) l=%d, r=%d, idat=%04x\n", 702 n, di->devmap[n], l, r, idat)); 703 break; 704 } else if ((OSS_MIXER_WRITE_R(OSS_SOUND_MIXER_FIRST) <= com && 705 com < OSS_MIXER_WRITE_R(OSS_SOUND_MIXER_NRDEVICES)) || 706 (OSS_MIXER_WRITE(OSS_SOUND_MIXER_FIRST) <= com && 707 com < OSS_MIXER_WRITE(OSS_SOUND_MIXER_NRDEVICES))) { 708 n = OSS_GET_DEV(com); 709 if (di->devmap[n] == -1) 710 return EINVAL; 711 error = copyin(SCARG(uap, data), &idat, sizeof idat); 712 if (error) 713 return error; 714 l = FROM_OSSVOL( idat & 0xff); 715 r = FROM_OSSVOL((idat >> 8) & 0xff); 716 mc.dev = di->devmap[n]; 717 mc.type = AUDIO_MIXER_VALUE; 718 if (di->stereomask & (1<<n)) { 719 mc.un.value.num_channels = 2; 720 mc.un.value.level[AUDIO_MIXER_LEVEL_LEFT] = l; 721 mc.un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = r; 722 } else { 723 mc.un.value.num_channels = 1; 724 mc.un.value.level[AUDIO_MIXER_LEVEL_MONO] = (l+r)/2; 725 } 726 DPRINTF(("OSS_MIXER_WRITE n=%d (dev=%d) l=%d, r=%d, idat=%04x\n", 727 n, di->devmap[n], l, r, idat)); 728 error = ioctlf(fp, AUDIO_MIXER_WRITE, (caddr_t)&mc, p); 729 if (error) 730 return error; 731 if (OSS_MIXER_WRITE(OSS_SOUND_MIXER_FIRST) <= com && 732 com < OSS_MIXER_WRITE(OSS_SOUND_MIXER_NRDEVICES)) 733 return 0; 734 goto doread; 735 } else { 736 #ifdef AUDIO_DEBUG 737 printf("oss_audio: unknown mixer ioctl %04lx\n", com); 738 #endif 739 return EINVAL; 740 } 741 } 742 return copyout(&idat, SCARG(uap, data), sizeof idat); 743 } 744 745 /* XXX hook for sequencer emulation */ 746 int 747 oss_ioctl_sequencer(p, uap, retval) 748 struct proc *p; 749 struct oss_sys_ioctl_args /* { 750 syscallarg(int) fd; 751 syscallarg(u_long) com; 752 syscallarg(caddr_t) data; 753 } */ *uap; 754 register_t *retval; 755 { 756 struct file *fp; 757 struct filedesc *fdp; 758 #if 0 759 u_long com; 760 int idat; 761 int error; 762 #endif 763 764 fdp = p->p_fd; 765 if ((u_int)SCARG(uap, fd) >= fdp->fd_nfiles || 766 (fp = fdp->fd_ofiles[SCARG(uap, fd)]) == NULL) 767 return (EBADF); 768 769 if ((fp->f_flag & (FREAD | FWRITE)) == 0) 770 return (EBADF); 771 772 #if 0 773 com = SCARG(uap, com); 774 #endif 775 retval[0] = 0; 776 777 return EINVAL; 778 } 779 780 /* 781 * Check that the blocksize is a power of 2 as OSS wants. 782 * If not, set it to be. 783 */ 784 static void setblocksize(fp, info, p) 785 struct file *fp; 786 struct audio_info *info; 787 struct proc *p; 788 { 789 struct audio_info set; 790 int s; 791 792 if (info->blocksize & (info->blocksize-1)) { 793 for(s = 32; s < info->blocksize; s <<= 1) 794 ; 795 AUDIO_INITINFO(&set); 796 set.blocksize = s; 797 fp->f_ops->fo_ioctl(fp, AUDIO_SETINFO, (caddr_t)&set, p); 798 fp->f_ops->fo_ioctl(fp, AUDIO_GETINFO, (caddr_t)info, p); 799 } 800 } 801
Indexes created Thu Sep 25 16:09:42 GMT 2025