sequencer.c revision 1.22
1 /* $NetBSD: sequencer.c,v 1.22 2002/11/26 18:49:41 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1998 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: sequencer.c,v 1.22 2002/11/26 18:49:41 christos Exp $"); 41 42 #include "sequencer.h" 43 44 #include <sys/param.h> 45 #include <sys/ioctl.h> 46 #include <sys/fcntl.h> 47 #include <sys/vnode.h> 48 #include <sys/select.h> 49 #include <sys/poll.h> 50 #include <sys/malloc.h> 51 #include <sys/proc.h> 52 #include <sys/systm.h> 53 #include <sys/syslog.h> 54 #include <sys/kernel.h> 55 #include <sys/signalvar.h> 56 #include <sys/conf.h> 57 #include <sys/audioio.h> 58 #include <sys/midiio.h> 59 #include <sys/device.h> 60 61 #include <dev/midi_if.h> 62 #include <dev/midivar.h> 63 #include <dev/sequencervar.h> 64 65 #define ADDTIMEVAL(a, b) ( \ 66 (a)->tv_sec += (b)->tv_sec, \ 67 (a)->tv_usec += (b)->tv_usec, \ 68 (a)->tv_usec > 1000000 ? ((a)->tv_sec++, (a)->tv_usec -= 1000000) : 0\ 69 ) 70 71 #define SUBTIMEVAL(a, b) ( \ 72 (a)->tv_sec -= (b)->tv_sec, \ 73 (a)->tv_usec -= (b)->tv_usec, \ 74 (a)->tv_usec < 0 ? ((a)->tv_sec--, (a)->tv_usec += 1000000) : 0\ 75 ) 76 77 #ifdef AUDIO_DEBUG 78 #define DPRINTF(x) if (sequencerdebug) printf x 79 #define DPRINTFN(n,x) if (sequencerdebug >= (n)) printf x 80 int sequencerdebug = 0; 81 #else 82 #define DPRINTF(x) 83 #define DPRINTFN(n,x) 84 #endif 85 86 #define SEQ_CMD(b) ((b)->arr[0]) 87 88 #define SEQ_EDEV(b) ((b)->arr[1]) 89 #define SEQ_ECMD(b) ((b)->arr[2]) 90 #define SEQ_ECHAN(b) ((b)->arr[3]) 91 #define SEQ_ENOTE(b) ((b)->arr[4]) 92 #define SEQ_EPARM(b) ((b)->arr[5]) 93 94 #define SEQ_EP1(b) ((b)->arr[4]) 95 #define SEQ_EP2(b) ((b)->arr[5]) 96 97 #define SEQ_XCMD(b) ((b)->arr[1]) 98 #define SEQ_XDEV(b) ((b)->arr[2]) 99 #define SEQ_XCHAN(b) ((b)->arr[3]) 100 #define SEQ_XNOTE(b) ((b)->arr[4]) 101 #define SEQ_XVEL(b) ((b)->arr[5]) 102 103 #define SEQ_TCMD(b) ((b)->arr[1]) 104 #define SEQ_TPARM(b) ((b)->arr[4]) 105 106 #define SEQ_NOTE_MAX 128 107 #define SEQ_NOTE_XXX 255 108 #define SEQ_VEL_OFF 0 109 110 #define RECALC_TICK(t) ((t)->tick = 60 * 1000000L / ((t)->tempo * (t)->timebase)) 111 112 struct sequencer_softc seqdevs[NSEQUENCER]; 113 114 void sequencerattach __P((int)); 115 void seq_reset __P((struct sequencer_softc *)); 116 int seq_do_command __P((struct sequencer_softc *, seq_event_rec *)); 117 int seq_do_extcommand __P((struct sequencer_softc *, seq_event_rec *)); 118 int seq_do_chnvoice __P((struct sequencer_softc *, seq_event_rec *)); 119 int seq_do_chncommon __P((struct sequencer_softc *, seq_event_rec *)); 120 int seq_do_timing __P((struct sequencer_softc *, seq_event_rec *)); 121 int seq_do_local __P((struct sequencer_softc *, seq_event_rec *)); 122 int seq_do_sysex __P((struct sequencer_softc *, seq_event_rec *)); 123 int seq_do_fullsize __P((struct sequencer_softc *, seq_event_rec *, 124 struct uio *)); 125 int seq_timer __P((struct sequencer_softc *, int, int, seq_event_rec *)); 126 static int seq_input_event __P((struct sequencer_softc *, seq_event_rec *)); 127 int seq_drain __P((struct sequencer_softc *)); 128 void seq_startoutput __P((struct sequencer_softc *)); 129 void seq_timeout __P((void *)); 130 int seq_to_new __P((seq_event_rec *, struct uio *)); 131 static int seq_sleep_timo(int *, char *, int); 132 static int seq_sleep(int *, char *); 133 static void seq_wakeup(int *); 134 135 struct midi_softc; 136 int midiseq_out __P((struct midi_dev *, u_char *, u_int, int)); 137 struct midi_dev *midiseq_open __P((int, int)); 138 void midiseq_close __P((struct midi_dev *)); 139 void midiseq_reset __P((struct midi_dev *)); 140 int midiseq_noteon __P((struct midi_dev *, int, int, int)); 141 int midiseq_noteoff __P((struct midi_dev *, int, int, int)); 142 int midiseq_keypressure __P((struct midi_dev *, int, int, int)); 143 int midiseq_pgmchange __P((struct midi_dev *, int, int)); 144 int midiseq_chnpressure __P((struct midi_dev *, int, int)); 145 int midiseq_ctlchange __P((struct midi_dev *, int, int, int)); 146 int midiseq_pitchbend __P((struct midi_dev *, int, int)); 147 int midiseq_loadpatch __P((struct midi_dev *, struct sysex_info *, 148 struct uio *)); 149 int midiseq_putc __P((struct midi_dev *, int)); 150 void midiseq_in __P((struct midi_dev *, u_char *, int)); 151 152 dev_type_open(sequenceropen); 153 dev_type_close(sequencerclose); 154 dev_type_read(sequencerread); 155 dev_type_write(sequencerwrite); 156 dev_type_ioctl(sequencerioctl); 157 dev_type_poll(sequencerpoll); 158 dev_type_kqfilter(sequencerkqfilter); 159 160 const struct cdevsw sequencer_cdevsw = { 161 sequenceropen, sequencerclose, sequencerread, sequencerwrite, 162 sequencerioctl, nostop, notty, sequencerpoll, nommap, 163 sequencerkqfilter, 164 }; 165 166 void 167 sequencerattach(n) 168 int n; 169 { 170 171 for (n = 0; n < NSEQUENCER; n++) 172 callout_init(&seqdevs[n].sc_callout); 173 } 174 175 int 176 sequenceropen(dev, flags, ifmt, p) 177 dev_t dev; 178 int flags, ifmt; 179 struct proc *p; 180 { 181 int unit = SEQUENCERUNIT(dev); 182 struct sequencer_softc *sc; 183 struct midi_dev *md; 184 int nmidi; 185 186 DPRINTF(("sequenceropen\n")); 187 188 if (unit >= NSEQUENCER) 189 return (ENXIO); 190 sc = &seqdevs[unit]; 191 if (sc->isopen) 192 return EBUSY; 193 if (SEQ_IS_OLD(unit)) 194 sc->mode = SEQ_OLD; 195 else 196 sc->mode = SEQ_NEW; 197 sc->isopen++; 198 sc->flags = flags & (FREAD|FWRITE); 199 sc->rchan = 0; 200 sc->wchan = 0; 201 sc->pbus = 0; 202 sc->async = 0; 203 sc->input_stamp = ~0; 204 205 sc->nmidi = 0; 206 nmidi = midi_unit_count(); 207 208 sc->devs = malloc(nmidi * sizeof(struct midi_dev *), 209 M_DEVBUF, M_WAITOK); 210 for (unit = 0; unit < nmidi; unit++) { 211 md = midiseq_open(unit, flags); 212 if (md) { 213 sc->devs[sc->nmidi++] = md; 214 md->seq = sc; 215 } 216 } 217 218 sc->timer.timebase = 100; 219 sc->timer.tempo = 60; 220 sc->doingsysex = 0; 221 RECALC_TICK(&sc->timer); 222 sc->timer.last = 0; 223 microtime(&sc->timer.start); 224 225 SEQ_QINIT(&sc->inq); 226 SEQ_QINIT(&sc->outq); 227 sc->lowat = SEQ_MAXQ / 2; 228 229 seq_reset(sc); 230 231 DPRINTF(("sequenceropen: mode=%d, nmidi=%d\n", sc->mode, sc->nmidi)); 232 return 0; 233 } 234 235 static int 236 seq_sleep_timo(chan, label, timo) 237 int *chan; 238 char *label; 239 int timo; 240 { 241 int st; 242 243 if (!label) 244 label = "seq"; 245 246 DPRINTFN(5, ("seq_sleep_timo: %p %s %d\n", chan, label, timo)); 247 *chan = 1; 248 st = tsleep(chan, PWAIT | PCATCH, label, timo); 249 *chan = 0; 250 #ifdef MIDI_DEBUG 251 if (st != 0) 252 printf("seq_sleep: %d\n", st); 253 #endif 254 return st; 255 } 256 257 static int 258 seq_sleep(chan, label) 259 int *chan; 260 char *label; 261 { 262 return seq_sleep_timo(chan, label, 0); 263 } 264 265 static void 266 seq_wakeup(chan) 267 int *chan; 268 { 269 if (*chan) { 270 DPRINTFN(5, ("seq_wakeup: %p\n", chan)); 271 wakeup(chan); 272 *chan = 0; 273 } 274 } 275 276 int 277 seq_drain(sc) 278 struct sequencer_softc *sc; 279 { 280 int error; 281 282 DPRINTFN(3, ("seq_drain: %p, len=%d\n", sc, SEQ_QLEN(&sc->outq))); 283 seq_startoutput(sc); 284 error = 0; 285 while(!SEQ_QEMPTY(&sc->outq) && !error) 286 error = seq_sleep_timo(&sc->wchan, "seq_dr", 60*hz); 287 return (error); 288 } 289 290 void 291 seq_timeout(addr) 292 void *addr; 293 { 294 struct sequencer_softc *sc = addr; 295 DPRINTFN(4, ("seq_timeout: %p\n", sc)); 296 sc->timeout = 0; 297 seq_startoutput(sc); 298 if (SEQ_QLEN(&sc->outq) < sc->lowat) { 299 seq_wakeup(&sc->wchan); 300 selnotify(&sc->wsel, 0); 301 if (sc->async) 302 psignal(sc->async, SIGIO); 303 } 304 305 } 306 307 void 308 seq_startoutput(sc) 309 struct sequencer_softc *sc; 310 { 311 struct sequencer_queue *q = &sc->outq; 312 seq_event_rec cmd; 313 314 if (sc->timeout) 315 return; 316 DPRINTFN(4, ("seq_startoutput: %p, len=%d\n", sc, SEQ_QLEN(q))); 317 while(!SEQ_QEMPTY(q) && !sc->timeout) { 318 SEQ_QGET(q, cmd); 319 seq_do_command(sc, &cmd); 320 } 321 } 322 323 int 324 sequencerclose(dev, flags, ifmt, p) 325 dev_t dev; 326 int flags, ifmt; 327 struct proc *p; 328 { 329 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 330 int n, s; 331 332 DPRINTF(("sequencerclose: %p\n", sc)); 333 334 seq_drain(sc); 335 s = splaudio(); 336 if (sc->timeout) { 337 callout_stop(&sc->sc_callout); 338 sc->timeout = 0; 339 } 340 splx(s); 341 342 for (n = 0; n < sc->nmidi; n++) 343 midiseq_close(sc->devs[n]); 344 free(sc->devs, M_DEVBUF); 345 sc->isopen = 0; 346 return (0); 347 } 348 349 static int 350 seq_input_event(sc, cmd) 351 struct sequencer_softc *sc; 352 seq_event_rec *cmd; 353 { 354 struct sequencer_queue *q = &sc->inq; 355 356 DPRINTFN(2, ("seq_input_event: %02x %02x %02x %02x %02x %02x %02x %02x\n", 357 cmd->arr[0], cmd->arr[1], cmd->arr[2], cmd->arr[3], 358 cmd->arr[4], cmd->arr[5], cmd->arr[6], cmd->arr[7])); 359 if (SEQ_QFULL(q)) 360 return (ENOMEM); 361 SEQ_QPUT(q, *cmd); 362 seq_wakeup(&sc->rchan); 363 selnotify(&sc->rsel, 0); 364 if (sc->async) 365 psignal(sc->async, SIGIO); 366 return 0; 367 } 368 369 void 370 seq_event_intr(addr, iev) 371 void *addr; 372 seq_event_rec *iev; 373 { 374 struct sequencer_softc *sc = addr; 375 union { 376 u_int32_t l; 377 u_int8_t b[4]; 378 } u; 379 u_long t; 380 struct timeval now; 381 seq_event_rec ev; 382 383 microtime(&now); 384 SUBTIMEVAL(&now, &sc->timer.start); 385 t = now.tv_sec * 1000000 + now.tv_usec; 386 t /= sc->timer.tick; 387 if (t != sc->input_stamp) { 388 ev.arr[0] = SEQ_TIMING; 389 ev.arr[1] = TMR_WAIT_ABS; 390 ev.arr[2] = 0; 391 ev.arr[3] = 0; 392 u.l = t; 393 ev.arr[4] = u.b[0]; 394 ev.arr[5] = u.b[1]; 395 ev.arr[6] = u.b[2]; 396 ev.arr[7] = u.b[3]; 397 seq_input_event(sc, &ev); 398 sc->input_stamp = t; 399 } 400 seq_input_event(sc, iev); 401 } 402 403 int 404 sequencerread(dev, uio, ioflag) 405 dev_t dev; 406 struct uio *uio; 407 int ioflag; 408 { 409 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 410 struct sequencer_queue *q = &sc->inq; 411 seq_event_rec ev; 412 int error, s; 413 414 DPRINTFN(20, ("sequencerread: %p, count=%d, ioflag=%x\n", 415 sc, (int) uio->uio_resid, ioflag)); 416 417 if (sc->mode == SEQ_OLD) { 418 DPRINTFN(-1,("sequencerread: old read\n")); 419 return (EINVAL); /* XXX unimplemented */ 420 } 421 422 error = 0; 423 while (SEQ_QEMPTY(q)) { 424 if (ioflag & IO_NDELAY) 425 return EWOULDBLOCK; 426 else { 427 error = seq_sleep(&sc->rchan, "seq rd"); 428 if (error) 429 return error; 430 } 431 } 432 s = splaudio(); 433 while (uio->uio_resid >= sizeof ev && !error && !SEQ_QEMPTY(q)) { 434 SEQ_QGET(q, ev); 435 error = uiomove(&ev, sizeof ev, uio); 436 } 437 splx(s); 438 return error; 439 } 440 441 int 442 sequencerwrite(dev, uio, ioflag) 443 dev_t dev; 444 struct uio *uio; 445 int ioflag; 446 { 447 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 448 struct sequencer_queue *q = &sc->outq; 449 int error; 450 seq_event_rec cmdbuf; 451 int size; 452 453 DPRINTFN(2, ("sequencerwrite: %p, count=%d\n", sc, (int) uio->uio_resid)); 454 455 error = 0; 456 size = sc->mode == SEQ_NEW ? sizeof cmdbuf : SEQOLD_CMDSIZE; 457 while (uio->uio_resid >= size) { 458 error = uiomove(&cmdbuf, size, uio); 459 if (error) 460 break; 461 if (sc->mode == SEQ_OLD) 462 if (seq_to_new(&cmdbuf, uio)) 463 continue; 464 if (SEQ_CMD(&cmdbuf) == SEQ_FULLSIZE) { 465 /* We do it like OSS does, asynchronously */ 466 error = seq_do_fullsize(sc, &cmdbuf, uio); 467 if (error) 468 break; 469 continue; 470 } 471 while (SEQ_QFULL(q)) { 472 seq_startoutput(sc); 473 if (SEQ_QFULL(q)) { 474 if (ioflag & IO_NDELAY) 475 return EWOULDBLOCK; 476 error = seq_sleep(&sc->wchan, "seq_wr"); 477 if (error) 478 return error; 479 } 480 } 481 SEQ_QPUT(q, cmdbuf); 482 } 483 seq_startoutput(sc); 484 485 #ifdef SEQUENCER_DEBUG 486 if (error) 487 DPRINTFN(2, ("sequencerwrite: error=%d\n", error)); 488 #endif 489 return error; 490 } 491 492 int 493 sequencerioctl(dev, cmd, addr, flag, p) 494 dev_t dev; 495 u_long cmd; 496 caddr_t addr; 497 int flag; 498 struct proc *p; 499 { 500 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 501 struct synth_info *si; 502 struct midi_dev *md; 503 int devno; 504 int error; 505 int t; 506 507 DPRINTFN(2, ("sequencerioctl: %p cmd=0x%08lx\n", sc, cmd)); 508 509 error = 0; 510 switch (cmd) { 511 case FIONBIO: 512 /* All handled in the upper FS layer. */ 513 break; 514 515 case FIOASYNC: 516 if (*(int *)addr) { 517 if (sc->async) 518 return EBUSY; 519 sc->async = p; 520 DPRINTF(("sequencer_ioctl: FIOASYNC %p\n", p)); 521 } else 522 sc->async = 0; 523 break; 524 525 case SEQUENCER_RESET: 526 seq_reset(sc); 527 break; 528 529 case SEQUENCER_PANIC: 530 seq_reset(sc); 531 /* Do more? OSS doesn't */ 532 break; 533 534 case SEQUENCER_SYNC: 535 if (sc->flags == FREAD) 536 return 0; 537 seq_drain(sc); 538 error = 0; 539 break; 540 541 case SEQUENCER_INFO: 542 si = (struct synth_info*)addr; 543 devno = si->device; 544 if (devno < 0 || devno >= sc->nmidi) 545 return EINVAL; 546 md = sc->devs[devno]; 547 strncpy(si->name, md->name, sizeof si->name); 548 si->synth_type = SYNTH_TYPE_MIDI; 549 si->synth_subtype = md->subtype; 550 si->nr_voices = md->nr_voices; 551 si->instr_bank_size = md->instr_bank_size; 552 si->capabilities = md->capabilities; 553 break; 554 555 case SEQUENCER_NRSYNTHS: 556 *(int *)addr = sc->nmidi; 557 break; 558 559 case SEQUENCER_NRMIDIS: 560 *(int *)addr = sc->nmidi; 561 break; 562 563 case SEQUENCER_OUTOFBAND: 564 DPRINTFN(3, ("sequencer_ioctl: OOB=%02x %02x %02x %02x %02x %02x %02x %02x\n", 565 *(u_char *)addr, *(u_char *)(addr+1), 566 *(u_char *)(addr+2), *(u_char *)(addr+3), 567 *(u_char *)(addr+4), *(u_char *)(addr+5), 568 *(u_char *)(addr+6), *(u_char *)(addr+7))); 569 error = seq_do_command(sc, (seq_event_rec *)addr); 570 break; 571 572 case SEQUENCER_TMR_TIMEBASE: 573 t = *(int *)addr; 574 if (t < 1) 575 t = 1; 576 if (t > 10000) 577 t = 10000; 578 sc->timer.timebase = t; 579 *(int *)addr = t; 580 RECALC_TICK(&sc->timer); 581 break; 582 583 case SEQUENCER_TMR_START: 584 error = seq_timer(sc, TMR_START, 0, 0); 585 break; 586 587 case SEQUENCER_TMR_STOP: 588 error = seq_timer(sc, TMR_STOP, 0, 0); 589 break; 590 591 case SEQUENCER_TMR_CONTINUE: 592 error = seq_timer(sc, TMR_CONTINUE, 0, 0); 593 break; 594 595 case SEQUENCER_TMR_TEMPO: 596 t = *(int *)addr; 597 if (t < 8) 598 t = 8; 599 if (t > 250) 600 t = 250; 601 sc->timer.tempo = t; 602 *(int *)addr = t; 603 RECALC_TICK(&sc->timer); 604 break; 605 606 case SEQUENCER_TMR_SOURCE: 607 *(int *)addr = SEQUENCER_TMR_INTERNAL; 608 break; 609 610 case SEQUENCER_TMR_METRONOME: 611 /* noop */ 612 break; 613 614 case SEQUENCER_THRESHOLD: 615 t = SEQ_MAXQ - *(int *)addr / sizeof (seq_event_rec); 616 if (t < 1) 617 t = 1; 618 if (t > SEQ_MAXQ) 619 t = SEQ_MAXQ; 620 sc->lowat = t; 621 break; 622 623 case SEQUENCER_CTRLRATE: 624 *(int *)addr = (sc->timer.tempo*sc->timer.timebase + 30) / 60; 625 break; 626 627 case SEQUENCER_GETTIME: 628 { 629 struct timeval now; 630 u_long t; 631 microtime(&now); 632 SUBTIMEVAL(&now, &sc->timer.start); 633 t = now.tv_sec * 1000000 + now.tv_usec; 634 t /= sc->timer.tick; 635 *(int *)addr = t; 636 break; 637 } 638 639 default: 640 DPRINTFN(-1,("sequencer_ioctl: unimpl %08lx\n", cmd)); 641 error = EINVAL; 642 break; 643 } 644 return error; 645 } 646 647 int 648 sequencerpoll(dev, events, p) 649 dev_t dev; 650 int events; 651 struct proc *p; 652 { 653 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 654 int revents = 0; 655 656 DPRINTF(("sequencerpoll: %p events=0x%x\n", sc, events)); 657 658 if (events & (POLLIN | POLLRDNORM)) 659 if (!SEQ_QEMPTY(&sc->inq)) 660 revents |= events & (POLLIN | POLLRDNORM); 661 662 if (events & (POLLOUT | POLLWRNORM)) 663 if (SEQ_QLEN(&sc->outq) < sc->lowat) 664 revents |= events & (POLLOUT | POLLWRNORM); 665 666 if (revents == 0) { 667 if (events & (POLLIN | POLLRDNORM)) 668 selrecord(p, &sc->rsel); 669 670 if (events & (POLLOUT | POLLWRNORM)) 671 selrecord(p, &sc->wsel); 672 } 673 674 return revents; 675 } 676 677 static void 678 filt_sequencerrdetach(struct knote *kn) 679 { 680 struct sequencer_softc *sc = kn->kn_hook; 681 int s; 682 683 s = splaudio(); 684 SLIST_REMOVE(&sc->rsel.sel_klist, kn, knote, kn_selnext); 685 splx(s); 686 } 687 688 static int 689 filt_sequencerread(struct knote *kn, long hint) 690 { 691 struct sequencer_softc *sc = kn->kn_hook; 692 693 /* XXXLUKEM (thorpej): make sure this is correct */ 694 695 if (SEQ_QEMPTY(&sc->inq)) 696 return (0); 697 kn->kn_data = sizeof(seq_event_rec); 698 return (1); 699 } 700 701 static const struct filterops sequencerread_filtops = 702 { 1, NULL, filt_sequencerrdetach, filt_sequencerread }; 703 704 static void 705 filt_sequencerwdetach(struct knote *kn) 706 { 707 struct sequencer_softc *sc = kn->kn_hook; 708 int s; 709 710 s = splaudio(); 711 SLIST_REMOVE(&sc->wsel.sel_klist, kn, knote, kn_selnext); 712 splx(s); 713 } 714 715 static int 716 filt_sequencerwrite(struct knote *kn, long hint) 717 { 718 struct sequencer_softc *sc = kn->kn_hook; 719 720 /* XXXLUKEM (thorpej): make sure this is correct */ 721 722 if (SEQ_QLEN(&sc->outq) >= sc->lowat) 723 return (0); 724 kn->kn_data = sizeof(seq_event_rec); 725 return (1); 726 } 727 728 static const struct filterops sequencerwrite_filtops = 729 { 1, NULL, filt_sequencerwdetach, filt_sequencerwrite }; 730 731 int 732 sequencerkqfilter(dev_t dev, struct knote *kn) 733 { 734 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 735 struct klist *klist; 736 int s; 737 738 switch (kn->kn_filter) { 739 case EVFILT_READ: 740 klist = &sc->rsel.sel_klist; 741 kn->kn_fop = &sequencerread_filtops; 742 break; 743 744 case EVFILT_WRITE: 745 klist = &sc->wsel.sel_klist; 746 kn->kn_fop = &sequencerwrite_filtops; 747 break; 748 749 default: 750 return (1); 751 } 752 753 kn->kn_hook = sc; 754 755 s = splaudio(); 756 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 757 splx(s); 758 759 return (0); 760 } 761 762 void 763 seq_reset(sc) 764 struct sequencer_softc *sc; 765 { 766 int i, chn; 767 struct midi_dev *md; 768 769 for (i = 0; i < sc->nmidi; i++) { 770 md = sc->devs[i]; 771 midiseq_reset(md); 772 for (chn = 0; chn < MAXCHAN; chn++) { 773 midiseq_ctlchange(md, chn, MIDI_CTRL_ALLOFF, 0); 774 midiseq_ctlchange(md, chn, MIDI_CTRL_RESET, 0); 775 midiseq_pitchbend(md, chn, MIDI_BEND_NEUTRAL); 776 } 777 } 778 } 779 780 int 781 seq_do_command(sc, b) 782 struct sequencer_softc *sc; 783 seq_event_rec *b; 784 { 785 int dev; 786 787 DPRINTFN(4, ("seq_do_command: %p cmd=0x%02x\n", sc, SEQ_CMD(b))); 788 789 switch(SEQ_CMD(b)) { 790 case SEQ_LOCAL: 791 return seq_do_local(sc, b); 792 case SEQ_TIMING: 793 return seq_do_timing(sc, b); 794 case SEQ_CHN_VOICE: 795 return seq_do_chnvoice(sc, b); 796 case SEQ_CHN_COMMON: 797 return seq_do_chncommon(sc, b); 798 case SEQ_SYSEX: 799 return seq_do_sysex(sc, b); 800 /* COMPAT */ 801 case SEQOLD_MIDIPUTC: 802 dev = b->arr[2]; 803 if (dev < 0 || dev >= sc->nmidi) 804 return (ENXIO); 805 return midiseq_putc(sc->devs[dev], b->arr[1]); 806 default: 807 DPRINTFN(-1,("seq_do_command: unimpl command %02x\n", 808 SEQ_CMD(b))); 809 return (EINVAL); 810 } 811 } 812 813 int 814 seq_do_chnvoice(sc, b) 815 struct sequencer_softc *sc; 816 seq_event_rec *b; 817 { 818 int cmd, dev, chan, note, parm, voice; 819 int error; 820 struct midi_dev *md; 821 822 dev = SEQ_EDEV(b); 823 if (dev < 0 || dev >= sc->nmidi) 824 return ENXIO; 825 md = sc->devs[dev]; 826 cmd = SEQ_ECMD(b); 827 chan = SEQ_ECHAN(b); 828 note = SEQ_ENOTE(b); 829 parm = SEQ_EPARM(b); 830 DPRINTFN(2,("seq_do_chnvoice: cmd=%02x dev=%d chan=%d note=%d parm=%d\n", 831 cmd, dev, chan, note, parm)); 832 voice = chan; 833 if (cmd == MIDI_NOTEON && parm == 0) { 834 cmd = MIDI_NOTEOFF; 835 parm = MIDI_HALF_VEL; 836 } 837 switch(cmd) { 838 case MIDI_NOTEON: 839 DPRINTFN(5, ("seq_do_chnvoice: noteon %p %d %d %d\n", 840 md, voice, note, parm)); 841 error = midiseq_noteon(md, voice, note, parm); 842 break; 843 case MIDI_NOTEOFF: 844 error = midiseq_noteoff(md, voice, note, parm); 845 break; 846 case MIDI_KEY_PRESSURE: 847 error = midiseq_keypressure(md, voice, note, parm); 848 break; 849 default: 850 DPRINTFN(-1,("seq_do_chnvoice: unimpl command %02x\n", cmd)); 851 error = EINVAL; 852 break; 853 } 854 return error; 855 } 856 857 int 858 seq_do_chncommon(sc, b) 859 struct sequencer_softc *sc; 860 seq_event_rec *b; 861 { 862 int cmd, dev, chan, p1, w14; 863 int error; 864 struct midi_dev *md; 865 union { 866 int16_t s; 867 u_int8_t b[2]; 868 } u; 869 870 dev = SEQ_EDEV(b); 871 if (dev < 0 || dev >= sc->nmidi) 872 return ENXIO; 873 md = sc->devs[dev]; 874 cmd = SEQ_ECMD(b); 875 chan = SEQ_ECHAN(b); 876 p1 = SEQ_EP1(b); 877 u.b[0] = b->arr[6]; 878 u.b[1] = b->arr[7]; 879 w14 = u.s; 880 DPRINTFN(2,("seq_do_chncommon: %02x\n", cmd)); 881 882 error = 0; 883 switch(cmd) { 884 case MIDI_PGM_CHANGE: 885 error = midiseq_pgmchange(md, chan, p1); 886 break; 887 case MIDI_CTL_CHANGE: 888 if (chan > 15 || p1 > 127) 889 return 0; /* EINVAL */ 890 error = midiseq_ctlchange(md, chan, p1, w14); 891 break; 892 case MIDI_PITCH_BEND: 893 error = midiseq_pitchbend(md, chan, w14); 894 break; 895 case MIDI_CHN_PRESSURE: 896 error = midiseq_chnpressure(md, chan, p1); 897 break; 898 default: 899 DPRINTFN(-1,("seq_do_chncommon: unimpl command %02x\n", cmd)); 900 error = EINVAL; 901 break; 902 } 903 return (error); 904 } 905 906 int 907 seq_do_timing(sc, b) 908 struct sequencer_softc *sc; 909 seq_event_rec *b; 910 { 911 union { 912 int32_t i; 913 u_int8_t b[4]; 914 } u; 915 u.b[0] = b->arr[4]; 916 u.b[1] = b->arr[5]; 917 u.b[2] = b->arr[6]; 918 u.b[3] = b->arr[7]; 919 return seq_timer(sc, SEQ_TCMD(b), u.i, b); 920 } 921 922 int 923 seq_do_local(sc, b) 924 struct sequencer_softc *sc; 925 seq_event_rec *b; 926 { 927 return (EINVAL); 928 } 929 930 int 931 seq_do_sysex(sc, b) 932 struct sequencer_softc *sc; 933 seq_event_rec *b; 934 { 935 int dev, i; 936 struct midi_dev *md; 937 u_int8_t c, *buf = &b->arr[2]; 938 939 dev = SEQ_EDEV(b); 940 if (dev < 0 || dev >= sc->nmidi) 941 return (ENXIO); 942 DPRINTF(("seq_do_sysex: dev=%d\n", dev)); 943 md = sc->devs[dev]; 944 945 if (!sc->doingsysex) { 946 c = MIDI_SYSEX_START; 947 midiseq_out(md, &c, 1, 0); 948 sc->doingsysex = 1; 949 } 950 951 for (i = 0; i < 6 && buf[i] != 0xff; i++) 952 ; 953 midiseq_out(md, buf, i, 0); 954 if (i < 6 || (i > 0 && buf[i-1] == MIDI_SYSEX_END)) 955 sc->doingsysex = 0; 956 return (0); 957 } 958 959 int 960 seq_timer(sc, cmd, parm, b) 961 struct sequencer_softc *sc; 962 int cmd, parm; 963 seq_event_rec *b; 964 { 965 struct syn_timer *t = &sc->timer; 966 struct timeval when; 967 int ticks; 968 int error; 969 long long usec; 970 971 DPRINTFN(2,("seq_timer: %02x %d\n", cmd, parm)); 972 973 error = 0; 974 switch(cmd) { 975 case TMR_WAIT_REL: 976 parm += t->last; 977 /* fall into */ 978 case TMR_WAIT_ABS: 979 t->last = parm; 980 usec = (long long)parm * (long long)t->tick; /* convert to usec */ 981 when.tv_sec = usec / 1000000; 982 when.tv_usec = usec % 1000000; 983 DPRINTFN(4, ("seq_timer: parm=%d, sleep when=%ld.%06ld", parm, 984 when.tv_sec, when.tv_usec)); 985 ADDTIMEVAL(&when, &t->start); /* abstime for end */ 986 ticks = hzto(&when); 987 DPRINTFN(4, (" when+start=%ld.%06ld, tick=%d\n", 988 when.tv_sec, when.tv_usec, ticks)); 989 if (ticks > 0) { 990 #ifdef DIAGNOSTIC 991 if (ticks > 20 * hz) { 992 /* Waiting more than 20s */ 993 printf("seq_timer: funny ticks=%d, usec=%lld, parm=%d, tick=%ld\n", 994 ticks, usec, parm, t->tick); 995 } 996 #endif 997 sc->timeout = 1; 998 callout_reset(&sc->sc_callout, ticks, 999 seq_timeout, sc); 1000 } 1001 #ifdef SEQUENCER_DEBUG 1002 else if (tick < 0) 1003 DPRINTF(("seq_timer: ticks = %d\n", ticks)); 1004 #endif 1005 break; 1006 case TMR_START: 1007 microtime(&t->start); 1008 t->running = 1; 1009 break; 1010 case TMR_STOP: 1011 microtime(&t->stop); 1012 t->running = 0; 1013 break; 1014 case TMR_CONTINUE: 1015 microtime(&when); 1016 SUBTIMEVAL(&when, &t->stop); 1017 ADDTIMEVAL(&t->start, &when); 1018 t->running = 1; 1019 break; 1020 case TMR_TEMPO: 1021 /* parm is ticks per minute / timebase */ 1022 if (parm < 8) 1023 parm = 8; 1024 if (parm > 360) 1025 parm = 360; 1026 t->tempo = parm; 1027 RECALC_TICK(t); 1028 break; 1029 case TMR_ECHO: 1030 error = seq_input_event(sc, b); 1031 break; 1032 case TMR_RESET: 1033 t->last = 0; 1034 microtime(&t->start); 1035 break; 1036 default: 1037 DPRINTF(("seq_timer: unknown %02x\n", cmd)); 1038 error = EINVAL; 1039 break; 1040 } 1041 return (error); 1042 } 1043 1044 int 1045 seq_do_fullsize(sc, b, uio) 1046 struct sequencer_softc *sc; 1047 seq_event_rec *b; 1048 struct uio *uio; 1049 { 1050 struct sysex_info sysex; 1051 u_int dev; 1052 1053 #ifdef DIAGNOSTIC 1054 if (sizeof(seq_event_rec) != SEQ_SYSEX_HDRSIZE) { 1055 printf("seq_do_fullsize: sysex size ??\n"); 1056 return EINVAL; 1057 } 1058 #endif 1059 memcpy(&sysex, b, sizeof sysex); 1060 dev = sysex.device_no; 1061 DPRINTFN(2, ("seq_do_fullsize: fmt=%04x, dev=%d, len=%d\n", 1062 sysex.key, dev, sysex.len)); 1063 return (midiseq_loadpatch(sc->devs[dev], &sysex, uio)); 1064 } 1065 1066 /* Convert an old sequencer event to a new one. */ 1067 int 1068 seq_to_new(ev, uio) 1069 seq_event_rec *ev; 1070 struct uio *uio; 1071 { 1072 int cmd, chan, note, parm; 1073 u_int32_t delay; 1074 int error; 1075 1076 cmd = SEQ_CMD(ev); 1077 chan = ev->arr[1]; 1078 note = ev->arr[2]; 1079 parm = ev->arr[3]; 1080 DPRINTFN(3, ("seq_to_new: 0x%02x %d %d %d\n", cmd, chan, note, parm)); 1081 1082 if (cmd >= 0x80) { 1083 /* Fill the event record */ 1084 if (uio->uio_resid >= sizeof *ev - SEQOLD_CMDSIZE) { 1085 error = uiomove(&ev->arr[SEQOLD_CMDSIZE], 1086 sizeof *ev - SEQOLD_CMDSIZE, uio); 1087 if (error) 1088 return error; 1089 } else 1090 return EINVAL; 1091 } 1092 1093 switch(cmd) { 1094 case SEQOLD_NOTEOFF: 1095 note = 255; 1096 SEQ_ECMD(ev) = MIDI_NOTEOFF; 1097 goto onoff; 1098 case SEQOLD_NOTEON: 1099 SEQ_ECMD(ev) = MIDI_NOTEON; 1100 onoff: 1101 SEQ_CMD(ev) = SEQ_CHN_VOICE; 1102 SEQ_EDEV(ev) = 0; 1103 SEQ_ECHAN(ev) = chan; 1104 SEQ_ENOTE(ev) = note; 1105 SEQ_EPARM(ev) = parm; 1106 break; 1107 case SEQOLD_WAIT: 1108 delay = *(u_int32_t *)ev->arr >> 8; 1109 SEQ_CMD(ev) = SEQ_TIMING; 1110 SEQ_TCMD(ev) = TMR_WAIT_REL; 1111 *(u_int32_t *)&ev->arr[4] = delay; 1112 break; 1113 case SEQOLD_SYNCTIMER: 1114 SEQ_CMD(ev) = SEQ_TIMING; 1115 SEQ_TCMD(ev) = TMR_RESET; 1116 break; 1117 case SEQOLD_PGMCHANGE: 1118 SEQ_ECMD(ev) = MIDI_PGM_CHANGE; 1119 SEQ_CMD(ev) = SEQ_CHN_COMMON; 1120 SEQ_EDEV(ev) = 0; 1121 SEQ_ECHAN(ev) = chan; 1122 SEQ_EP1(ev) = note; 1123 break; 1124 case SEQOLD_MIDIPUTC: 1125 break; /* interpret in normal mode */ 1126 case SEQOLD_ECHO: 1127 case SEQOLD_PRIVATE: 1128 case SEQOLD_EXTENDED: 1129 default: 1130 DPRINTF(("seq_to_new: not impl 0x%02x\n", cmd)); 1131 return EINVAL; 1132 /* In case new events show up */ 1133 case SEQ_TIMING: 1134 case SEQ_CHN_VOICE: 1135 case SEQ_CHN_COMMON: 1136 case SEQ_FULLSIZE: 1137 break; 1138 } 1139 return 0; 1140 } 1141 1142 /**********************************************/ 1143 1144 void 1145 midiseq_in(md, msg, len) 1146 struct midi_dev *md; 1147 u_char *msg; 1148 int len; 1149 { 1150 int unit = md->unit; 1151 seq_event_rec ev; 1152 int status, chan; 1153 1154 DPRINTFN(2, ("midiseq_in: %p %02x %02x %02x\n", 1155 md, msg[0], msg[1], msg[2])); 1156 1157 status = MIDI_GET_STATUS(msg[0]); 1158 chan = MIDI_GET_CHAN(msg[0]); 1159 switch (status) { 1160 case MIDI_NOTEON: 1161 if (msg[2] == 0) { 1162 status = MIDI_NOTEOFF; 1163 msg[2] = MIDI_HALF_VEL; 1164 } 1165 /* fall into */ 1166 case MIDI_NOTEOFF: 1167 case MIDI_KEY_PRESSURE: 1168 SEQ_MK_CHN_VOICE(&ev, unit, status, chan, msg[1], msg[2]); 1169 break; 1170 case MIDI_CTL_CHANGE: 1171 SEQ_MK_CHN_COMMON(&ev, unit, status, chan, msg[1], 0, msg[2]); 1172 break; 1173 case MIDI_PGM_CHANGE: 1174 case MIDI_CHN_PRESSURE: 1175 SEQ_MK_CHN_COMMON(&ev, unit, status, chan, msg[1], 0, 0); 1176 break; 1177 case MIDI_PITCH_BEND: 1178 SEQ_MK_CHN_COMMON(&ev, unit, status, chan, 0, 0, 1179 (msg[1] & 0x7f) | ((msg[2] & 0x7f) << 7)); 1180 break; 1181 default: 1182 return; 1183 } 1184 seq_event_intr(md->seq, &ev); 1185 } 1186 1187 struct midi_dev * 1188 midiseq_open(unit, flags) 1189 int unit; 1190 int flags; 1191 { 1192 extern struct cfdriver midi_cd; 1193 extern const struct cdevsw midi_cdevsw; 1194 int error; 1195 struct midi_dev *md; 1196 struct midi_softc *sc; 1197 struct midi_info mi; 1198 1199 DPRINTFN(2, ("midiseq_open: %d %d\n", unit, flags)); 1200 error = (*midi_cdevsw.d_open)(makedev(0, unit), flags, 0, 0); 1201 if (error) 1202 return (0); 1203 sc = midi_cd.cd_devs[unit]; 1204 sc->seqopen = 1; 1205 md = malloc(sizeof *md, M_DEVBUF, M_WAITOK|M_ZERO); 1206 sc->seq_md = md; 1207 md->msc = sc; 1208 midi_getinfo(makedev(0, unit), &mi); 1209 md->unit = unit; 1210 md->name = mi.name; 1211 md->subtype = 0; 1212 md->nr_voices = 128; /* XXX */ 1213 md->instr_bank_size = 128; /* XXX */ 1214 if (mi.props & MIDI_PROP_CAN_INPUT) 1215 md->capabilities |= SYNTH_CAP_INPUT; 1216 return (md); 1217 } 1218 1219 void 1220 midiseq_close(md) 1221 struct midi_dev *md; 1222 { 1223 extern const struct cdevsw midi_cdevsw; 1224 1225 DPRINTFN(2, ("midiseq_close: %d\n", md->unit)); 1226 (*midi_cdevsw.d_close)(makedev(0, md->unit), 0, 0, 0); 1227 free(md, M_DEVBUF); 1228 } 1229 1230 void 1231 midiseq_reset(md) 1232 struct midi_dev *md; 1233 { 1234 /* XXX send GM reset? */ 1235 DPRINTFN(3, ("midiseq_reset: %d\n", md->unit)); 1236 } 1237 1238 int 1239 midiseq_out(md, buf, cc, chk) 1240 struct midi_dev *md; 1241 u_char *buf; 1242 u_int cc; 1243 int chk; 1244 { 1245 DPRINTFN(5, ("midiseq_out: m=%p, unit=%d, buf[0]=0x%02x, cc=%d\n", 1246 md->msc, md->unit, buf[0], cc)); 1247 1248 /* The MIDI "status" byte does not have to be repeated. */ 1249 if (chk && md->last_cmd == buf[0]) 1250 buf++, cc--; 1251 else 1252 md->last_cmd = buf[0]; 1253 return midi_writebytes(md->unit, buf, cc); 1254 } 1255 1256 int 1257 midiseq_noteon(md, chan, note, vel) 1258 struct midi_dev *md; 1259 int chan, note, vel; 1260 { 1261 u_char buf[3]; 1262 1263 DPRINTFN(6, ("midiseq_noteon 0x%02x %d %d\n", 1264 MIDI_NOTEON | chan, note, vel)); 1265 if (chan < 0 || chan > 15 || 1266 note < 0 || note > 127) 1267 return EINVAL; 1268 if (vel < 0) vel = 0; 1269 if (vel > 127) vel = 127; 1270 buf[0] = MIDI_NOTEON | chan; 1271 buf[1] = note; 1272 buf[2] = vel; 1273 return midiseq_out(md, buf, 3, 1); 1274 } 1275 1276 int 1277 midiseq_noteoff(md, chan, note, vel) 1278 struct midi_dev *md; 1279 int chan, note, vel; 1280 { 1281 u_char buf[3]; 1282 1283 if (chan < 0 || chan > 15 || 1284 note < 0 || note > 127) 1285 return EINVAL; 1286 if (vel < 0) vel = 0; 1287 if (vel > 127) vel = 127; 1288 buf[0] = MIDI_NOTEOFF | chan; 1289 buf[1] = note; 1290 buf[2] = vel; 1291 return midiseq_out(md, buf, 3, 1); 1292 } 1293 1294 int 1295 midiseq_keypressure(md, chan, note, vel) 1296 struct midi_dev *md; 1297 int chan, note, vel; 1298 { 1299 u_char buf[3]; 1300 1301 if (chan < 0 || chan > 15 || 1302 note < 0 || note > 127) 1303 return EINVAL; 1304 if (vel < 0) vel = 0; 1305 if (vel > 127) vel = 127; 1306 buf[0] = MIDI_KEY_PRESSURE | chan; 1307 buf[1] = note; 1308 buf[2] = vel; 1309 return midiseq_out(md, buf, 3, 1); 1310 } 1311 1312 int 1313 midiseq_pgmchange(md, chan, parm) 1314 struct midi_dev *md; 1315 int chan, parm; 1316 { 1317 u_char buf[2]; 1318 1319 if (chan < 0 || chan > 15 || 1320 parm < 0 || parm > 127) 1321 return EINVAL; 1322 buf[0] = MIDI_PGM_CHANGE | chan; 1323 buf[1] = parm; 1324 return midiseq_out(md, buf, 2, 1); 1325 } 1326 1327 int 1328 midiseq_chnpressure(md, chan, parm) 1329 struct midi_dev *md; 1330 int chan, parm; 1331 { 1332 u_char buf[2]; 1333 1334 if (chan < 0 || chan > 15 || 1335 parm < 0 || parm > 127) 1336 return EINVAL; 1337 buf[0] = MIDI_CHN_PRESSURE | chan; 1338 buf[1] = parm; 1339 return midiseq_out(md, buf, 2, 1); 1340 } 1341 1342 int 1343 midiseq_ctlchange(md, chan, parm, w14) 1344 struct midi_dev *md; 1345 int chan, parm, w14; 1346 { 1347 u_char buf[3]; 1348 1349 if (chan < 0 || chan > 15 || 1350 parm < 0 || parm > 127) 1351 return EINVAL; 1352 buf[0] = MIDI_CTL_CHANGE | chan; 1353 buf[1] = parm; 1354 buf[2] = w14 & 0x7f; 1355 return midiseq_out(md, buf, 3, 1); 1356 } 1357 1358 int 1359 midiseq_pitchbend(md, chan, parm) 1360 struct midi_dev *md; 1361 int chan, parm; 1362 { 1363 u_char buf[3]; 1364 1365 if (chan < 0 || chan > 15) 1366 return EINVAL; 1367 buf[0] = MIDI_PITCH_BEND | chan; 1368 buf[1] = parm & 0x7f; 1369 buf[2] = (parm >> 7) & 0x7f; 1370 return midiseq_out(md, buf, 3, 1); 1371 } 1372 1373 int 1374 midiseq_loadpatch(md, sysex, uio) 1375 struct midi_dev *md; 1376 struct sysex_info *sysex; 1377 struct uio *uio; 1378 { 1379 u_char c, buf[128]; 1380 int i, cc, error; 1381 1382 if (sysex->key != SEQ_SYSEX_PATCH) { 1383 DPRINTFN(-1,("midiseq_loadpatch: bad patch key 0x%04x\n", 1384 sysex->key)); 1385 return (EINVAL); 1386 } 1387 if (uio->uio_resid < sysex->len) 1388 /* adjust length, should be an error */ 1389 sysex->len = uio->uio_resid; 1390 1391 DPRINTFN(2, ("midiseq_loadpatch: len=%d\n", sysex->len)); 1392 if (sysex->len == 0) 1393 return EINVAL; 1394 error = uiomove(&c, 1, uio); 1395 if (error) 1396 return error; 1397 if (c != MIDI_SYSEX_START) /* must start like this */ 1398 return EINVAL; 1399 error = midiseq_out(md, &c, 1, 0); 1400 if (error) 1401 return error; 1402 --sysex->len; 1403 while (sysex->len > 0) { 1404 cc = sysex->len; 1405 if (cc > sizeof buf) 1406 cc = sizeof buf; 1407 error = uiomove(buf, cc, uio); 1408 if (error) 1409 break; 1410 for(i = 0; i < cc && !MIDI_IS_STATUS(buf[i]); i++) 1411 ; 1412 error = midiseq_out(md, buf, i, 0); 1413 if (error) 1414 break; 1415 sysex->len -= i; 1416 if (i != cc) 1417 break; 1418 } 1419 /* Any leftover data in uio is rubbish; 1420 * the SYSEX should be one write ending in SYSEX_END. 1421 */ 1422 uio->uio_resid = 0; 1423 c = MIDI_SYSEX_END; 1424 return midiseq_out(md, &c, 1, 0); 1425 } 1426 1427 int 1428 midiseq_putc(md, data) 1429 struct midi_dev *md; 1430 int data; 1431 { 1432 u_char c = data; 1433 DPRINTFN(4,("midiseq_putc: 0x%02x\n", data)); 1434 return midiseq_out(md, &c, 1, 0); 1435 } 1436 1437 #include "midi.h" 1438 #if NMIDI == 0 1439 dev_type_open(midiopen); 1440 dev_type_close(midiclose); 1441 1442 const struct cdevsw midi_cdevsw = { 1443 midiopen, midiclose, noread, nowrite, noioctl, 1444 nostop, notty, nopoll, nommap, 1445 }; 1446 1447 /* 1448 * If someone has a sequencer, but no midi devices there will 1449 * be unresolved references, so we provide little stubs. 1450 */ 1451 1452 int 1453 midi_unit_count() 1454 { 1455 return (0); 1456 } 1457 1458 int 1459 midiopen(dev, flags, ifmt, p) 1460 dev_t dev; 1461 int flags, ifmt; 1462 struct proc *p; 1463 { 1464 return (ENXIO); 1465 } 1466 1467 struct cfdriver midi_cd; 1468 1469 void 1470 midi_getinfo(dev, mi) 1471 dev_t dev; 1472 struct midi_info *mi; 1473 { 1474 } 1475 1476 int 1477 midiclose(dev, flags, ifmt, p) 1478 dev_t dev; 1479 int flags, ifmt; 1480 struct proc *p; 1481 { 1482 return (ENXIO); 1483 } 1484 1485 int 1486 midi_writebytes(unit, buf, cc) 1487 int unit; 1488 u_char *buf; 1489 int cc; 1490 { 1491 return (ENXIO); 1492 } 1493 #endif /* NMIDI == 0 */ 1494
Indexes created Tue Sep 23 14:10:03 GMT 2025