sequencer.c revision 1.27
1 /* $NetBSD: sequencer.c,v 1.27 2005/02/27 00:26:58 perry 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 1.27 2005/02/27 00:26:58 perry 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(int); 115 void seq_reset(struct sequencer_softc *); 116 int seq_do_command(struct sequencer_softc *, seq_event_rec *); 117 int seq_do_extcommand(struct sequencer_softc *, seq_event_rec *); 118 int seq_do_chnvoice(struct sequencer_softc *, seq_event_rec *); 119 int seq_do_chncommon(struct sequencer_softc *, seq_event_rec *); 120 int seq_do_timing(struct sequencer_softc *, seq_event_rec *); 121 int seq_do_local(struct sequencer_softc *, seq_event_rec *); 122 int seq_do_sysex(struct sequencer_softc *, seq_event_rec *); 123 int seq_do_fullsize(struct sequencer_softc *, seq_event_rec *, struct uio *); 124 int seq_timer(struct sequencer_softc *, int, int, seq_event_rec *); 125 static int seq_input_event(struct sequencer_softc *, seq_event_rec *); 126 int seq_drain(struct sequencer_softc *); 127 void seq_startoutput(struct sequencer_softc *); 128 void seq_timeout(void *); 129 int seq_to_new(seq_event_rec *, struct uio *); 130 static int seq_sleep_timo(int *, char *, int); 131 static int seq_sleep(int *, char *); 132 static void seq_wakeup(int *); 133 134 struct midi_softc; 135 int midiseq_out(struct midi_dev *, u_char *, u_int, int); 136 struct midi_dev *midiseq_open(int, int); 137 void midiseq_close(struct midi_dev *); 138 void midiseq_reset(struct midi_dev *); 139 int midiseq_noteon(struct midi_dev *, int, int, int); 140 int midiseq_noteoff(struct midi_dev *, int, int, int); 141 int midiseq_keypressure(struct midi_dev *, int, int, int); 142 int midiseq_pgmchange(struct midi_dev *, int, int); 143 int midiseq_chnpressure(struct midi_dev *, int, int); 144 int midiseq_ctlchange(struct midi_dev *, int, int, int); 145 int midiseq_pitchbend(struct midi_dev *, int, int); 146 int midiseq_loadpatch(struct midi_dev *, struct sysex_info *, struct uio *); 147 int midiseq_putc(struct midi_dev *, int); 148 void midiseq_in(struct midi_dev *, u_char *, int); 149 150 dev_type_open(sequenceropen); 151 dev_type_close(sequencerclose); 152 dev_type_read(sequencerread); 153 dev_type_write(sequencerwrite); 154 dev_type_ioctl(sequencerioctl); 155 dev_type_poll(sequencerpoll); 156 dev_type_kqfilter(sequencerkqfilter); 157 158 const struct cdevsw sequencer_cdevsw = { 159 sequenceropen, sequencerclose, sequencerread, sequencerwrite, 160 sequencerioctl, nostop, notty, sequencerpoll, nommap, 161 sequencerkqfilter, 162 }; 163 164 void 165 sequencerattach(n) 166 int n; 167 { 168 169 for (n = 0; n < NSEQUENCER; n++) 170 callout_init(&seqdevs[n].sc_callout); 171 } 172 173 int 174 sequenceropen(dev, flags, ifmt, p) 175 dev_t dev; 176 int flags, ifmt; 177 struct proc *p; 178 { 179 int unit = SEQUENCERUNIT(dev); 180 struct sequencer_softc *sc; 181 struct midi_dev *md; 182 int nmidi; 183 184 DPRINTF(("sequenceropen\n")); 185 186 if (unit >= NSEQUENCER) 187 return (ENXIO); 188 sc = &seqdevs[unit]; 189 if (sc->isopen) 190 return EBUSY; 191 if (SEQ_IS_OLD(unit)) 192 sc->mode = SEQ_OLD; 193 else 194 sc->mode = SEQ_NEW; 195 sc->isopen++; 196 sc->flags = flags & (FREAD|FWRITE); 197 sc->rchan = 0; 198 sc->wchan = 0; 199 sc->pbus = 0; 200 sc->async = 0; 201 sc->input_stamp = ~0; 202 203 sc->nmidi = 0; 204 nmidi = midi_unit_count(); 205 206 sc->devs = malloc(nmidi * sizeof(struct midi_dev *), 207 M_DEVBUF, M_WAITOK); 208 for (unit = 0; unit < nmidi; unit++) { 209 md = midiseq_open(unit, flags); 210 if (md) { 211 sc->devs[sc->nmidi++] = md; 212 md->seq = sc; 213 } 214 } 215 216 sc->timer.timebase = 100; 217 sc->timer.tempo = 60; 218 sc->doingsysex = 0; 219 RECALC_TICK(&sc->timer); 220 sc->timer.last = 0; 221 microtime(&sc->timer.start); 222 223 SEQ_QINIT(&sc->inq); 224 SEQ_QINIT(&sc->outq); 225 sc->lowat = SEQ_MAXQ / 2; 226 227 seq_reset(sc); 228 229 DPRINTF(("sequenceropen: mode=%d, nmidi=%d\n", sc->mode, sc->nmidi)); 230 return 0; 231 } 232 233 static int 234 seq_sleep_timo(chan, label, timo) 235 int *chan; 236 char *label; 237 int timo; 238 { 239 int st; 240 241 if (!label) 242 label = "seq"; 243 244 DPRINTFN(5, ("seq_sleep_timo: %p %s %d\n", chan, label, timo)); 245 *chan = 1; 246 st = tsleep(chan, PWAIT | PCATCH, label, timo); 247 *chan = 0; 248 #ifdef MIDI_DEBUG 249 if (st != 0) 250 printf("seq_sleep: %d\n", st); 251 #endif 252 return st; 253 } 254 255 static int 256 seq_sleep(chan, label) 257 int *chan; 258 char *label; 259 { 260 return seq_sleep_timo(chan, label, 0); 261 } 262 263 static void 264 seq_wakeup(chan) 265 int *chan; 266 { 267 if (*chan) { 268 DPRINTFN(5, ("seq_wakeup: %p\n", chan)); 269 wakeup(chan); 270 *chan = 0; 271 } 272 } 273 274 int 275 seq_drain(sc) 276 struct sequencer_softc *sc; 277 { 278 int error; 279 280 DPRINTFN(3, ("seq_drain: %p, len=%d\n", sc, SEQ_QLEN(&sc->outq))); 281 seq_startoutput(sc); 282 error = 0; 283 while(!SEQ_QEMPTY(&sc->outq) && !error) 284 error = seq_sleep_timo(&sc->wchan, "seq_dr", 60*hz); 285 return (error); 286 } 287 288 void 289 seq_timeout(addr) 290 void *addr; 291 { 292 struct sequencer_softc *sc = addr; 293 DPRINTFN(4, ("seq_timeout: %p\n", sc)); 294 sc->timeout = 0; 295 seq_startoutput(sc); 296 if (SEQ_QLEN(&sc->outq) < sc->lowat) { 297 seq_wakeup(&sc->wchan); 298 selnotify(&sc->wsel, 0); 299 if (sc->async) 300 psignal(sc->async, SIGIO); 301 } 302 303 } 304 305 void 306 seq_startoutput(sc) 307 struct sequencer_softc *sc; 308 { 309 struct sequencer_queue *q = &sc->outq; 310 seq_event_rec cmd; 311 312 if (sc->timeout) 313 return; 314 DPRINTFN(4, ("seq_startoutput: %p, len=%d\n", sc, SEQ_QLEN(q))); 315 while(!SEQ_QEMPTY(q) && !sc->timeout) { 316 SEQ_QGET(q, cmd); 317 seq_do_command(sc, &cmd); 318 } 319 } 320 321 int 322 sequencerclose(dev, flags, ifmt, p) 323 dev_t dev; 324 int flags, ifmt; 325 struct proc *p; 326 { 327 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 328 int n, s; 329 330 DPRINTF(("sequencerclose: %p\n", sc)); 331 332 seq_drain(sc); 333 s = splaudio(); 334 if (sc->timeout) { 335 callout_stop(&sc->sc_callout); 336 sc->timeout = 0; 337 } 338 splx(s); 339 340 for (n = 0; n < sc->nmidi; n++) 341 midiseq_close(sc->devs[n]); 342 free(sc->devs, M_DEVBUF); 343 sc->isopen = 0; 344 return (0); 345 } 346 347 static int 348 seq_input_event(sc, cmd) 349 struct sequencer_softc *sc; 350 seq_event_rec *cmd; 351 { 352 struct sequencer_queue *q = &sc->inq; 353 354 DPRINTFN(2, ("seq_input_event: %02x %02x %02x %02x %02x %02x %02x %02x\n", 355 cmd->arr[0], cmd->arr[1], cmd->arr[2], cmd->arr[3], 356 cmd->arr[4], cmd->arr[5], cmd->arr[6], cmd->arr[7])); 357 if (SEQ_QFULL(q)) 358 return (ENOMEM); 359 SEQ_QPUT(q, *cmd); 360 seq_wakeup(&sc->rchan); 361 selnotify(&sc->rsel, 0); 362 if (sc->async) 363 psignal(sc->async, SIGIO); 364 return 0; 365 } 366 367 void 368 seq_event_intr(addr, iev) 369 void *addr; 370 seq_event_rec *iev; 371 { 372 struct sequencer_softc *sc = addr; 373 union { 374 u_int32_t l; 375 u_int8_t b[4]; 376 } u; 377 u_long t; 378 struct timeval now; 379 seq_event_rec ev; 380 381 microtime(&now); 382 SUBTIMEVAL(&now, &sc->timer.start); 383 t = now.tv_sec * 1000000 + now.tv_usec; 384 t /= sc->timer.tick; 385 if (t != sc->input_stamp) { 386 ev.arr[0] = SEQ_TIMING; 387 ev.arr[1] = TMR_WAIT_ABS; 388 ev.arr[2] = 0; 389 ev.arr[3] = 0; 390 u.l = t; 391 ev.arr[4] = u.b[0]; 392 ev.arr[5] = u.b[1]; 393 ev.arr[6] = u.b[2]; 394 ev.arr[7] = u.b[3]; 395 seq_input_event(sc, &ev); 396 sc->input_stamp = t; 397 } 398 seq_input_event(sc, iev); 399 } 400 401 int 402 sequencerread(dev, uio, ioflag) 403 dev_t dev; 404 struct uio *uio; 405 int ioflag; 406 { 407 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 408 struct sequencer_queue *q = &sc->inq; 409 seq_event_rec ev; 410 int error, s; 411 412 DPRINTFN(20, ("sequencerread: %p, count=%d, ioflag=%x\n", 413 sc, (int) uio->uio_resid, ioflag)); 414 415 if (sc->mode == SEQ_OLD) { 416 DPRINTFN(-1,("sequencerread: old read\n")); 417 return (EINVAL); /* XXX unimplemented */ 418 } 419 420 error = 0; 421 while (SEQ_QEMPTY(q)) { 422 if (ioflag & IO_NDELAY) 423 return EWOULDBLOCK; 424 else { 425 error = seq_sleep(&sc->rchan, "seq rd"); 426 if (error) 427 return error; 428 } 429 } 430 s = splaudio(); 431 while (uio->uio_resid >= sizeof ev && !error && !SEQ_QEMPTY(q)) { 432 SEQ_QGET(q, ev); 433 error = uiomove(&ev, sizeof ev, uio); 434 } 435 splx(s); 436 return error; 437 } 438 439 int 440 sequencerwrite(dev, uio, ioflag) 441 dev_t dev; 442 struct uio *uio; 443 int ioflag; 444 { 445 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 446 struct sequencer_queue *q = &sc->outq; 447 int error; 448 seq_event_rec cmdbuf; 449 int size; 450 451 DPRINTFN(2, ("sequencerwrite: %p, count=%d\n", sc, (int) uio->uio_resid)); 452 453 error = 0; 454 size = sc->mode == SEQ_NEW ? sizeof cmdbuf : SEQOLD_CMDSIZE; 455 while (uio->uio_resid >= size) { 456 error = uiomove(&cmdbuf, size, uio); 457 if (error) 458 break; 459 if (sc->mode == SEQ_OLD) 460 if (seq_to_new(&cmdbuf, uio)) 461 continue; 462 if (SEQ_CMD(&cmdbuf) == SEQ_FULLSIZE) { 463 /* We do it like OSS does, asynchronously */ 464 error = seq_do_fullsize(sc, &cmdbuf, uio); 465 if (error) 466 break; 467 continue; 468 } 469 while (SEQ_QFULL(q)) { 470 seq_startoutput(sc); 471 if (SEQ_QFULL(q)) { 472 if (ioflag & IO_NDELAY) 473 return EWOULDBLOCK; 474 error = seq_sleep(&sc->wchan, "seq_wr"); 475 if (error) 476 return error; 477 } 478 } 479 SEQ_QPUT(q, cmdbuf); 480 } 481 seq_startoutput(sc); 482 483 #ifdef SEQUENCER_DEBUG 484 if (error) 485 DPRINTFN(2, ("sequencerwrite: error=%d\n", error)); 486 #endif 487 return error; 488 } 489 490 int 491 sequencerioctl(dev, cmd, addr, flag, p) 492 dev_t dev; 493 u_long cmd; 494 caddr_t addr; 495 int flag; 496 struct proc *p; 497 { 498 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 499 struct synth_info *si; 500 struct midi_dev *md; 501 int devno; 502 int error; 503 int t; 504 505 DPRINTFN(2, ("sequencerioctl: %p cmd=0x%08lx\n", sc, cmd)); 506 507 error = 0; 508 switch (cmd) { 509 case FIONBIO: 510 /* All handled in the upper FS layer. */ 511 break; 512 513 case FIOASYNC: 514 if (*(int *)addr) { 515 if (sc->async) 516 return EBUSY; 517 sc->async = p; 518 DPRINTF(("sequencer_ioctl: FIOASYNC %p\n", p)); 519 } else 520 sc->async = 0; 521 break; 522 523 case SEQUENCER_RESET: 524 seq_reset(sc); 525 break; 526 527 case SEQUENCER_PANIC: 528 seq_reset(sc); 529 /* Do more? OSS doesn't */ 530 break; 531 532 case SEQUENCER_SYNC: 533 if (sc->flags == FREAD) 534 return 0; 535 seq_drain(sc); 536 error = 0; 537 break; 538 539 case SEQUENCER_INFO: 540 si = (struct synth_info*)addr; 541 devno = si->device; 542 if (devno < 0 || devno >= sc->nmidi) 543 return EINVAL; 544 md = sc->devs[devno]; 545 strncpy(si->name, md->name, sizeof si->name); 546 si->synth_type = SYNTH_TYPE_MIDI; 547 si->synth_subtype = md->subtype; 548 si->nr_voices = md->nr_voices; 549 si->instr_bank_size = md->instr_bank_size; 550 si->capabilities = md->capabilities; 551 break; 552 553 case SEQUENCER_NRSYNTHS: 554 *(int *)addr = sc->nmidi; 555 break; 556 557 case SEQUENCER_NRMIDIS: 558 *(int *)addr = sc->nmidi; 559 break; 560 561 case SEQUENCER_OUTOFBAND: 562 DPRINTFN(3, ("sequencer_ioctl: OOB=%02x %02x %02x %02x %02x %02x %02x %02x\n", 563 *(u_char *)addr, *(u_char *)(addr+1), 564 *(u_char *)(addr+2), *(u_char *)(addr+3), 565 *(u_char *)(addr+4), *(u_char *)(addr+5), 566 *(u_char *)(addr+6), *(u_char *)(addr+7))); 567 error = seq_do_command(sc, (seq_event_rec *)addr); 568 break; 569 570 case SEQUENCER_TMR_TIMEBASE: 571 t = *(int *)addr; 572 if (t < 1) 573 t = 1; 574 if (t > 10000) 575 t = 10000; 576 sc->timer.timebase = t; 577 *(int *)addr = t; 578 RECALC_TICK(&sc->timer); 579 break; 580 581 case SEQUENCER_TMR_START: 582 error = seq_timer(sc, TMR_START, 0, 0); 583 break; 584 585 case SEQUENCER_TMR_STOP: 586 error = seq_timer(sc, TMR_STOP, 0, 0); 587 break; 588 589 case SEQUENCER_TMR_CONTINUE: 590 error = seq_timer(sc, TMR_CONTINUE, 0, 0); 591 break; 592 593 case SEQUENCER_TMR_TEMPO: 594 t = *(int *)addr; 595 if (t < 8) 596 t = 8; 597 if (t > 250) 598 t = 250; 599 sc->timer.tempo = t; 600 *(int *)addr = t; 601 RECALC_TICK(&sc->timer); 602 break; 603 604 case SEQUENCER_TMR_SOURCE: 605 *(int *)addr = SEQUENCER_TMR_INTERNAL; 606 break; 607 608 case SEQUENCER_TMR_METRONOME: 609 /* noop */ 610 break; 611 612 case SEQUENCER_THRESHOLD: 613 t = SEQ_MAXQ - *(int *)addr / sizeof (seq_event_rec); 614 if (t < 1) 615 t = 1; 616 if (t > SEQ_MAXQ) 617 t = SEQ_MAXQ; 618 sc->lowat = t; 619 break; 620 621 case SEQUENCER_CTRLRATE: 622 *(int *)addr = (sc->timer.tempo*sc->timer.timebase + 30) / 60; 623 break; 624 625 case SEQUENCER_GETTIME: 626 { 627 struct timeval now; 628 u_long t; 629 microtime(&now); 630 SUBTIMEVAL(&now, &sc->timer.start); 631 t = now.tv_sec * 1000000 + now.tv_usec; 632 t /= sc->timer.tick; 633 *(int *)addr = t; 634 break; 635 } 636 637 default: 638 DPRINTFN(-1,("sequencer_ioctl: unimpl %08lx\n", cmd)); 639 error = EINVAL; 640 break; 641 } 642 return error; 643 } 644 645 int 646 sequencerpoll(dev, events, p) 647 dev_t dev; 648 int events; 649 struct proc *p; 650 { 651 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 652 int revents = 0; 653 654 DPRINTF(("sequencerpoll: %p events=0x%x\n", sc, events)); 655 656 if (events & (POLLIN | POLLRDNORM)) 657 if (!SEQ_QEMPTY(&sc->inq)) 658 revents |= events & (POLLIN | POLLRDNORM); 659 660 if (events & (POLLOUT | POLLWRNORM)) 661 if (SEQ_QLEN(&sc->outq) < sc->lowat) 662 revents |= events & (POLLOUT | POLLWRNORM); 663 664 if (revents == 0) { 665 if (events & (POLLIN | POLLRDNORM)) 666 selrecord(p, &sc->rsel); 667 668 if (events & (POLLOUT | POLLWRNORM)) 669 selrecord(p, &sc->wsel); 670 } 671 672 return revents; 673 } 674 675 static void 676 filt_sequencerrdetach(struct knote *kn) 677 { 678 struct sequencer_softc *sc = kn->kn_hook; 679 int s; 680 681 s = splaudio(); 682 SLIST_REMOVE(&sc->rsel.sel_klist, kn, knote, kn_selnext); 683 splx(s); 684 } 685 686 static int 687 filt_sequencerread(struct knote *kn, long hint) 688 { 689 struct sequencer_softc *sc = kn->kn_hook; 690 691 /* XXXLUKEM (thorpej): make sure this is correct */ 692 693 if (SEQ_QEMPTY(&sc->inq)) 694 return (0); 695 kn->kn_data = sizeof(seq_event_rec); 696 return (1); 697 } 698 699 static const struct filterops sequencerread_filtops = 700 { 1, NULL, filt_sequencerrdetach, filt_sequencerread }; 701 702 static void 703 filt_sequencerwdetach(struct knote *kn) 704 { 705 struct sequencer_softc *sc = kn->kn_hook; 706 int s; 707 708 s = splaudio(); 709 SLIST_REMOVE(&sc->wsel.sel_klist, kn, knote, kn_selnext); 710 splx(s); 711 } 712 713 static int 714 filt_sequencerwrite(struct knote *kn, long hint) 715 { 716 struct sequencer_softc *sc = kn->kn_hook; 717 718 /* XXXLUKEM (thorpej): make sure this is correct */ 719 720 if (SEQ_QLEN(&sc->outq) >= sc->lowat) 721 return (0); 722 kn->kn_data = sizeof(seq_event_rec); 723 return (1); 724 } 725 726 static const struct filterops sequencerwrite_filtops = 727 { 1, NULL, filt_sequencerwdetach, filt_sequencerwrite }; 728 729 int 730 sequencerkqfilter(dev_t dev, struct knote *kn) 731 { 732 struct sequencer_softc *sc = &seqdevs[SEQUENCERUNIT(dev)]; 733 struct klist *klist; 734 int s; 735 736 switch (kn->kn_filter) { 737 case EVFILT_READ: 738 klist = &sc->rsel.sel_klist; 739 kn->kn_fop = &sequencerread_filtops; 740 break; 741 742 case EVFILT_WRITE: 743 klist = &sc->wsel.sel_klist; 744 kn->kn_fop = &sequencerwrite_filtops; 745 break; 746 747 default: 748 return (1); 749 } 750 751 kn->kn_hook = sc; 752 753 s = splaudio(); 754 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 755 splx(s); 756 757 return (0); 758 } 759 760 void 761 seq_reset(sc) 762 struct sequencer_softc *sc; 763 { 764 int i, chn; 765 struct midi_dev *md; 766 767 for (i = 0; i < sc->nmidi; i++) { 768 md = sc->devs[i]; 769 midiseq_reset(md); 770 for (chn = 0; chn < MAXCHAN; chn++) { 771 midiseq_ctlchange(md, chn, MIDI_CTRL_ALLOFF, 0); 772 midiseq_ctlchange(md, chn, MIDI_CTRL_RESET, 0); 773 midiseq_pitchbend(md, chn, MIDI_BEND_NEUTRAL); 774 } 775 } 776 } 777 778 int 779 seq_do_command(sc, b) 780 struct sequencer_softc *sc; 781 seq_event_rec *b; 782 { 783 int dev; 784 785 DPRINTFN(4, ("seq_do_command: %p cmd=0x%02x\n", sc, SEQ_CMD(b))); 786 787 switch(SEQ_CMD(b)) { 788 case SEQ_LOCAL: 789 return seq_do_local(sc, b); 790 case SEQ_TIMING: 791 return seq_do_timing(sc, b); 792 case SEQ_CHN_VOICE: 793 return seq_do_chnvoice(sc, b); 794 case SEQ_CHN_COMMON: 795 return seq_do_chncommon(sc, b); 796 case SEQ_SYSEX: 797 return seq_do_sysex(sc, b); 798 /* COMPAT */ 799 case SEQOLD_MIDIPUTC: 800 dev = b->arr[2]; 801 if (dev < 0 || dev >= sc->nmidi) 802 return (ENXIO); 803 return midiseq_putc(sc->devs[dev], b->arr[1]); 804 default: 805 DPRINTFN(-1,("seq_do_command: unimpl command %02x\n", 806 SEQ_CMD(b))); 807 return (EINVAL); 808 } 809 } 810 811 int 812 seq_do_chnvoice(sc, b) 813 struct sequencer_softc *sc; 814 seq_event_rec *b; 815 { 816 int cmd, dev, chan, note, parm, voice; 817 int error; 818 struct midi_dev *md; 819 820 dev = SEQ_EDEV(b); 821 if (dev < 0 || dev >= sc->nmidi) 822 return ENXIO; 823 md = sc->devs[dev]; 824 cmd = SEQ_ECMD(b); 825 chan = SEQ_ECHAN(b); 826 note = SEQ_ENOTE(b); 827 parm = SEQ_EPARM(b); 828 DPRINTFN(2,("seq_do_chnvoice: cmd=%02x dev=%d chan=%d note=%d parm=%d\n", 829 cmd, dev, chan, note, parm)); 830 voice = chan; 831 if (cmd == MIDI_NOTEON && parm == 0) { 832 cmd = MIDI_NOTEOFF; 833 parm = MIDI_HALF_VEL; 834 } 835 switch(cmd) { 836 case MIDI_NOTEON: 837 DPRINTFN(5, ("seq_do_chnvoice: noteon %p %d %d %d\n", 838 md, voice, note, parm)); 839 error = midiseq_noteon(md, voice, note, parm); 840 break; 841 case MIDI_NOTEOFF: 842 error = midiseq_noteoff(md, voice, note, parm); 843 break; 844 case MIDI_KEY_PRESSURE: 845 error = midiseq_keypressure(md, voice, note, parm); 846 break; 847 default: 848 DPRINTFN(-1,("seq_do_chnvoice: unimpl command %02x\n", cmd)); 849 error = EINVAL; 850 break; 851 } 852 return error; 853 } 854 855 int 856 seq_do_chncommon(sc, b) 857 struct sequencer_softc *sc; 858 seq_event_rec *b; 859 { 860 int cmd, dev, chan, p1, w14; 861 int error; 862 struct midi_dev *md; 863 union { 864 int16_t s; 865 u_int8_t b[2]; 866 } u; 867 868 dev = SEQ_EDEV(b); 869 if (dev < 0 || dev >= sc->nmidi) 870 return ENXIO; 871 md = sc->devs[dev]; 872 cmd = SEQ_ECMD(b); 873 chan = SEQ_ECHAN(b); 874 p1 = SEQ_EP1(b); 875 u.b[0] = b->arr[6]; 876 u.b[1] = b->arr[7]; 877 w14 = u.s; 878 DPRINTFN(2,("seq_do_chncommon: %02x\n", cmd)); 879 880 error = 0; 881 switch(cmd) { 882 case MIDI_PGM_CHANGE: 883 error = midiseq_pgmchange(md, chan, p1); 884 break; 885 case MIDI_CTL_CHANGE: 886 if (chan > 15 || p1 > 127) 887 return 0; /* EINVAL */ 888 error = midiseq_ctlchange(md, chan, p1, w14); 889 break; 890 case MIDI_PITCH_BEND: 891 error = midiseq_pitchbend(md, chan, w14); 892 break; 893 case MIDI_CHN_PRESSURE: 894 error = midiseq_chnpressure(md, chan, p1); 895 break; 896 default: 897 DPRINTFN(-1,("seq_do_chncommon: unimpl command %02x\n", cmd)); 898 error = EINVAL; 899 break; 900 } 901 return (error); 902 } 903 904 int 905 seq_do_timing(sc, b) 906 struct sequencer_softc *sc; 907 seq_event_rec *b; 908 { 909 union { 910 int32_t i; 911 u_int8_t b[4]; 912 } u; 913 u.b[0] = b->arr[4]; 914 u.b[1] = b->arr[5]; 915 u.b[2] = b->arr[6]; 916 u.b[3] = b->arr[7]; 917 return seq_timer(sc, SEQ_TCMD(b), u.i, b); 918 } 919 920 int 921 seq_do_local(sc, b) 922 struct sequencer_softc *sc; 923 seq_event_rec *b; 924 { 925 return (EINVAL); 926 } 927 928 int 929 seq_do_sysex(sc, b) 930 struct sequencer_softc *sc; 931 seq_event_rec *b; 932 { 933 int dev, i; 934 struct midi_dev *md; 935 u_int8_t c, *buf = &b->arr[2]; 936 937 dev = SEQ_EDEV(b); 938 if (dev < 0 || dev >= sc->nmidi) 939 return (ENXIO); 940 DPRINTF(("seq_do_sysex: dev=%d\n", dev)); 941 md = sc->devs[dev]; 942 943 if (!sc->doingsysex) { 944 c = MIDI_SYSEX_START; 945 midiseq_out(md, &c, 1, 0); 946 sc->doingsysex = 1; 947 } 948 949 for (i = 0; i < 6 && buf[i] != 0xff; i++) 950 ; 951 midiseq_out(md, buf, i, 0); 952 if (i < 6 || (i > 0 && buf[i-1] == MIDI_SYSEX_END)) 953 sc->doingsysex = 0; 954 return (0); 955 } 956 957 int 958 seq_timer(sc, cmd, parm, b) 959 struct sequencer_softc *sc; 960 int cmd, parm; 961 seq_event_rec *b; 962 { 963 struct syn_timer *t = &sc->timer; 964 struct timeval when; 965 int ticks; 966 int error; 967 long long usec; 968 969 DPRINTFN(2,("seq_timer: %02x %d\n", cmd, parm)); 970 971 error = 0; 972 switch(cmd) { 973 case TMR_WAIT_REL: 974 parm += t->last; 975 /* fall into */ 976 case TMR_WAIT_ABS: 977 t->last = parm; 978 usec = (long long)parm * (long long)t->tick; /* convert to usec */ 979 when.tv_sec = usec / 1000000; 980 when.tv_usec = usec % 1000000; 981 DPRINTFN(4, ("seq_timer: parm=%d, sleep when=%ld.%06ld", parm, 982 when.tv_sec, when.tv_usec)); 983 ADDTIMEVAL(&when, &t->start); /* abstime for end */ 984 ticks = hzto(&when); 985 DPRINTFN(4, (" when+start=%ld.%06ld, tick=%d\n", 986 when.tv_sec, when.tv_usec, ticks)); 987 if (ticks > 0) { 988 #ifdef DIAGNOSTIC 989 if (ticks > 20 * hz) { 990 /* Waiting more than 20s */ 991 printf("seq_timer: funny ticks=%d, usec=%lld, parm=%d, tick=%ld\n", 992 ticks, usec, parm, t->tick); 993 } 994 #endif 995 sc->timeout = 1; 996 callout_reset(&sc->sc_callout, ticks, 997 seq_timeout, sc); 998 } 999 #ifdef SEQUENCER_DEBUG 1000 else if (tick < 0) 1001 DPRINTF(("seq_timer: ticks = %d\n", ticks)); 1002 #endif 1003 break; 1004 case TMR_START: 1005 microtime(&t->start); 1006 t->running = 1; 1007 break; 1008 case TMR_STOP: 1009 microtime(&t->stop); 1010 t->running = 0; 1011 break; 1012 case TMR_CONTINUE: 1013 microtime(&when); 1014 SUBTIMEVAL(&when, &t->stop); 1015 ADDTIMEVAL(&t->start, &when); 1016 t->running = 1; 1017 break; 1018 case TMR_TEMPO: 1019 /* parm is ticks per minute / timebase */ 1020 if (parm < 8) 1021 parm = 8; 1022 if (parm > 360) 1023 parm = 360; 1024 t->tempo = parm; 1025 RECALC_TICK(t); 1026 break; 1027 case TMR_ECHO: 1028 error = seq_input_event(sc, b); 1029 break; 1030 case TMR_RESET: 1031 t->last = 0; 1032 microtime(&t->start); 1033 break; 1034 default: 1035 DPRINTF(("seq_timer: unknown %02x\n", cmd)); 1036 error = EINVAL; 1037 break; 1038 } 1039 return (error); 1040 } 1041 1042 int 1043 seq_do_fullsize(sc, b, uio) 1044 struct sequencer_softc *sc; 1045 seq_event_rec *b; 1046 struct uio *uio; 1047 { 1048 struct sysex_info sysex; 1049 u_int dev; 1050 1051 #ifdef DIAGNOSTIC 1052 if (sizeof(seq_event_rec) != SEQ_SYSEX_HDRSIZE) { 1053 printf("seq_do_fullsize: sysex size ??\n"); 1054 return EINVAL; 1055 } 1056 #endif 1057 memcpy(&sysex, b, sizeof sysex); 1058 dev = sysex.device_no; 1059 DPRINTFN(2, ("seq_do_fullsize: fmt=%04x, dev=%d, len=%d\n", 1060 sysex.key, dev, sysex.len)); 1061 return (midiseq_loadpatch(sc->devs[dev], &sysex, uio)); 1062 } 1063 1064 /* Convert an old sequencer event to a new one. */ 1065 int 1066 seq_to_new(ev, uio) 1067 seq_event_rec *ev; 1068 struct uio *uio; 1069 { 1070 int cmd, chan, note, parm; 1071 u_int32_t delay; 1072 int error; 1073 1074 cmd = SEQ_CMD(ev); 1075 chan = ev->arr[1]; 1076 note = ev->arr[2]; 1077 parm = ev->arr[3]; 1078 DPRINTFN(3, ("seq_to_new: 0x%02x %d %d %d\n", cmd, chan, note, parm)); 1079 1080 if (cmd >= 0x80) { 1081 /* Fill the event record */ 1082 if (uio->uio_resid >= sizeof *ev - SEQOLD_CMDSIZE) { 1083 error = uiomove(&ev->arr[SEQOLD_CMDSIZE], 1084 sizeof *ev - SEQOLD_CMDSIZE, uio); 1085 if (error) 1086 return error; 1087 } else 1088 return EINVAL; 1089 } 1090 1091 switch(cmd) { 1092 case SEQOLD_NOTEOFF: 1093 note = 255; 1094 SEQ_ECMD(ev) = MIDI_NOTEOFF; 1095 goto onoff; 1096 case SEQOLD_NOTEON: 1097 SEQ_ECMD(ev) = MIDI_NOTEON; 1098 onoff: 1099 SEQ_CMD(ev) = SEQ_CHN_VOICE; 1100 SEQ_EDEV(ev) = 0; 1101 SEQ_ECHAN(ev) = chan; 1102 SEQ_ENOTE(ev) = note; 1103 SEQ_EPARM(ev) = parm; 1104 break; 1105 case SEQOLD_WAIT: 1106 delay = *(u_int32_t *)ev->arr >> 8; 1107 SEQ_CMD(ev) = SEQ_TIMING; 1108 SEQ_TCMD(ev) = TMR_WAIT_REL; 1109 *(u_int32_t *)&ev->arr[4] = delay; 1110 break; 1111 case SEQOLD_SYNCTIMER: 1112 SEQ_CMD(ev) = SEQ_TIMING; 1113 SEQ_TCMD(ev) = TMR_RESET; 1114 break; 1115 case SEQOLD_PGMCHANGE: 1116 SEQ_ECMD(ev) = MIDI_PGM_CHANGE; 1117 SEQ_CMD(ev) = SEQ_CHN_COMMON; 1118 SEQ_EDEV(ev) = 0; 1119 SEQ_ECHAN(ev) = chan; 1120 SEQ_EP1(ev) = note; 1121 break; 1122 case SEQOLD_MIDIPUTC: 1123 break; /* interpret in normal mode */ 1124 case SEQOLD_ECHO: 1125 case SEQOLD_PRIVATE: 1126 case SEQOLD_EXTENDED: 1127 default: 1128 DPRINTF(("seq_to_new: not impl 0x%02x\n", cmd)); 1129 return EINVAL; 1130 /* In case new events show up */ 1131 case SEQ_TIMING: 1132 case SEQ_CHN_VOICE: 1133 case SEQ_CHN_COMMON: 1134 case SEQ_FULLSIZE: 1135 break; 1136 } 1137 return 0; 1138 } 1139 1140 /**********************************************/ 1141 1142 void 1143 midiseq_in(md, msg, len) 1144 struct midi_dev *md; 1145 u_char *msg; 1146 int len; 1147 { 1148 int unit = md->unit; 1149 seq_event_rec ev; 1150 int status, chan; 1151 1152 DPRINTFN(2, ("midiseq_in: %p %02x %02x %02x\n", 1153 md, msg[0], msg[1], msg[2])); 1154 1155 status = MIDI_GET_STATUS(msg[0]); 1156 chan = MIDI_GET_CHAN(msg[0]); 1157 switch (status) { 1158 case MIDI_NOTEON: 1159 if (msg[2] == 0) { 1160 status = MIDI_NOTEOFF; 1161 msg[2] = MIDI_HALF_VEL; 1162 } 1163 /* fall into */ 1164 case MIDI_NOTEOFF: 1165 case MIDI_KEY_PRESSURE: 1166 SEQ_MK_CHN_VOICE(&ev, unit, status, chan, msg[1], msg[2]); 1167 break; 1168 case MIDI_CTL_CHANGE: 1169 SEQ_MK_CHN_COMMON(&ev, unit, status, chan, msg[1], 0, msg[2]); 1170 break; 1171 case MIDI_PGM_CHANGE: 1172 case MIDI_CHN_PRESSURE: 1173 SEQ_MK_CHN_COMMON(&ev, unit, status, chan, msg[1], 0, 0); 1174 break; 1175 case MIDI_PITCH_BEND: 1176 SEQ_MK_CHN_COMMON(&ev, unit, status, chan, 0, 0, 1177 (msg[1] & 0x7f) | ((msg[2] & 0x7f) << 7)); 1178 break; 1179 default: 1180 return; 1181 } 1182 seq_event_intr(md->seq, &ev); 1183 } 1184 1185 struct midi_dev * 1186 midiseq_open(unit, flags) 1187 int unit; 1188 int flags; 1189 { 1190 extern struct cfdriver midi_cd; 1191 extern const struct cdevsw midi_cdevsw; 1192 int error; 1193 struct midi_dev *md; 1194 struct midi_softc *sc; 1195 struct midi_info mi; 1196 1197 DPRINTFN(2, ("midiseq_open: %d %d\n", unit, flags)); 1198 error = (*midi_cdevsw.d_open)(makedev(0, unit), flags, 0, 0); 1199 if (error) 1200 return (0); 1201 sc = midi_cd.cd_devs[unit]; 1202 sc->seqopen = 1; 1203 md = malloc(sizeof *md, M_DEVBUF, M_WAITOK|M_ZERO); 1204 sc->seq_md = md; 1205 md->msc = sc; 1206 midi_getinfo(makedev(0, unit), &mi); 1207 md->unit = unit; 1208 md->name = mi.name; 1209 md->subtype = 0; 1210 md->nr_voices = 128; /* XXX */ 1211 md->instr_bank_size = 128; /* XXX */ 1212 if (mi.props & MIDI_PROP_CAN_INPUT) 1213 md->capabilities |= SYNTH_CAP_INPUT; 1214 return (md); 1215 } 1216 1217 void 1218 midiseq_close(md) 1219 struct midi_dev *md; 1220 { 1221 extern const struct cdevsw midi_cdevsw; 1222 1223 DPRINTFN(2, ("midiseq_close: %d\n", md->unit)); 1224 (*midi_cdevsw.d_close)(makedev(0, md->unit), 0, 0, 0); 1225 free(md, M_DEVBUF); 1226 } 1227 1228 void 1229 midiseq_reset(md) 1230 struct midi_dev *md; 1231 { 1232 /* XXX send GM reset? */ 1233 DPRINTFN(3, ("midiseq_reset: %d\n", md->unit)); 1234 } 1235 1236 int 1237 midiseq_out(md, buf, cc, chk) 1238 struct midi_dev *md; 1239 u_char *buf; 1240 u_int cc; 1241 int chk; 1242 { 1243 DPRINTFN(5, ("midiseq_out: m=%p, unit=%d, buf[0]=0x%02x, cc=%d\n", 1244 md->msc, md->unit, buf[0], cc)); 1245 1246 /* The MIDI "status" byte does not have to be repeated. */ 1247 if (chk && md->last_cmd == buf[0]) 1248 buf++, cc--; 1249 else 1250 md->last_cmd = buf[0]; 1251 return midi_writebytes(md->unit, buf, cc); 1252 } 1253 1254 int 1255 midiseq_noteon(md, chan, note, vel) 1256 struct midi_dev *md; 1257 int chan, note, vel; 1258 { 1259 u_char buf[3]; 1260 1261 DPRINTFN(6, ("midiseq_noteon 0x%02x %d %d\n", 1262 MIDI_NOTEON | chan, note, vel)); 1263 if (chan < 0 || chan > 15 || 1264 note < 0 || note > 127) 1265 return EINVAL; 1266 if (vel < 0) vel = 0; 1267 if (vel > 127) vel = 127; 1268 buf[0] = MIDI_NOTEON | chan; 1269 buf[1] = note; 1270 buf[2] = vel; 1271 return midiseq_out(md, buf, 3, 1); 1272 } 1273 1274 int 1275 midiseq_noteoff(md, chan, note, vel) 1276 struct midi_dev *md; 1277 int chan, note, vel; 1278 { 1279 u_char buf[3]; 1280 1281 if (chan < 0 || chan > 15 || 1282 note < 0 || note > 127) 1283 return EINVAL; 1284 if (vel < 0) vel = 0; 1285 if (vel > 127) vel = 127; 1286 buf[0] = MIDI_NOTEOFF | chan; 1287 buf[1] = note; 1288 buf[2] = vel; 1289 return midiseq_out(md, buf, 3, 1); 1290 } 1291 1292 int 1293 midiseq_keypressure(md, chan, note, vel) 1294 struct midi_dev *md; 1295 int chan, note, vel; 1296 { 1297 u_char buf[3]; 1298 1299 if (chan < 0 || chan > 15 || 1300 note < 0 || note > 127) 1301 return EINVAL; 1302 if (vel < 0) vel = 0; 1303 if (vel > 127) vel = 127; 1304 buf[0] = MIDI_KEY_PRESSURE | chan; 1305 buf[1] = note; 1306 buf[2] = vel; 1307 return midiseq_out(md, buf, 3, 1); 1308 } 1309 1310 int 1311 midiseq_pgmchange(md, chan, parm) 1312 struct midi_dev *md; 1313 int chan, parm; 1314 { 1315 u_char buf[2]; 1316 1317 if (chan < 0 || chan > 15 || 1318 parm < 0 || parm > 127) 1319 return EINVAL; 1320 buf[0] = MIDI_PGM_CHANGE | chan; 1321 buf[1] = parm; 1322 return midiseq_out(md, buf, 2, 1); 1323 } 1324 1325 int 1326 midiseq_chnpressure(md, chan, parm) 1327 struct midi_dev *md; 1328 int chan, parm; 1329 { 1330 u_char buf[2]; 1331 1332 if (chan < 0 || chan > 15 || 1333 parm < 0 || parm > 127) 1334 return EINVAL; 1335 buf[0] = MIDI_CHN_PRESSURE | chan; 1336 buf[1] = parm; 1337 return midiseq_out(md, buf, 2, 1); 1338 } 1339 1340 int 1341 midiseq_ctlchange(md, chan, parm, w14) 1342 struct midi_dev *md; 1343 int chan, parm, w14; 1344 { 1345 u_char buf[3]; 1346 1347 if (chan < 0 || chan > 15 || 1348 parm < 0 || parm > 127) 1349 return EINVAL; 1350 buf[0] = MIDI_CTL_CHANGE | chan; 1351 buf[1] = parm; 1352 buf[2] = w14 & 0x7f; 1353 return midiseq_out(md, buf, 3, 1); 1354 } 1355 1356 int 1357 midiseq_pitchbend(md, chan, parm) 1358 struct midi_dev *md; 1359 int chan, parm; 1360 { 1361 u_char buf[3]; 1362 1363 if (chan < 0 || chan > 15) 1364 return EINVAL; 1365 buf[0] = MIDI_PITCH_BEND | chan; 1366 buf[1] = parm & 0x7f; 1367 buf[2] = (parm >> 7) & 0x7f; 1368 return midiseq_out(md, buf, 3, 1); 1369 } 1370 1371 int 1372 midiseq_loadpatch(md, sysex, uio) 1373 struct midi_dev *md; 1374 struct sysex_info *sysex; 1375 struct uio *uio; 1376 { 1377 u_char c, buf[128]; 1378 int i, cc, error; 1379 1380 if (sysex->key != SEQ_SYSEX_PATCH) { 1381 DPRINTFN(-1,("midiseq_loadpatch: bad patch key 0x%04x\n", 1382 sysex->key)); 1383 return (EINVAL); 1384 } 1385 if (uio->uio_resid < sysex->len) 1386 /* adjust length, should be an error */ 1387 sysex->len = uio->uio_resid; 1388 1389 DPRINTFN(2, ("midiseq_loadpatch: len=%d\n", sysex->len)); 1390 if (sysex->len == 0) 1391 return EINVAL; 1392 error = uiomove(&c, 1, uio); 1393 if (error) 1394 return error; 1395 if (c != MIDI_SYSEX_START) /* must start like this */ 1396 return EINVAL; 1397 error = midiseq_out(md, &c, 1, 0); 1398 if (error) 1399 return error; 1400 --sysex->len; 1401 while (sysex->len > 0) { 1402 cc = sysex->len; 1403 if (cc > sizeof buf) 1404 cc = sizeof buf; 1405 error = uiomove(buf, cc, uio); 1406 if (error) 1407 break; 1408 for(i = 0; i < cc && !MIDI_IS_STATUS(buf[i]); i++) 1409 ; 1410 error = midiseq_out(md, buf, i, 0); 1411 if (error) 1412 break; 1413 sysex->len -= i; 1414 if (i != cc) 1415 break; 1416 } 1417 /* Any leftover data in uio is rubbish; 1418 * the SYSEX should be one write ending in SYSEX_END. 1419 */ 1420 uio->uio_resid = 0; 1421 c = MIDI_SYSEX_END; 1422 return midiseq_out(md, &c, 1, 0); 1423 } 1424 1425 int 1426 midiseq_putc(md, data) 1427 struct midi_dev *md; 1428 int data; 1429 { 1430 u_char c = data; 1431 DPRINTFN(4,("midiseq_putc: 0x%02x\n", data)); 1432 return midiseq_out(md, &c, 1, 0); 1433 } 1434 1435 #include "midi.h" 1436 #if NMIDI == 0 1437 dev_type_open(midiopen); 1438 dev_type_close(midiclose); 1439 1440 const struct cdevsw midi_cdevsw = { 1441 midiopen, midiclose, noread, nowrite, noioctl, 1442 nostop, notty, nopoll, nommap, 1443 }; 1444 1445 /* 1446 * If someone has a sequencer, but no midi devices there will 1447 * be unresolved references, so we provide little stubs. 1448 */ 1449 1450 int 1451 midi_unit_count() 1452 { 1453 return (0); 1454 } 1455 1456 int 1457 midiopen(dev, flags, ifmt, p) 1458 dev_t dev; 1459 int flags, ifmt; 1460 struct proc *p; 1461 { 1462 return (ENXIO); 1463 } 1464 1465 struct cfdriver midi_cd; 1466 1467 void 1468 midi_getinfo(dev, mi) 1469 dev_t dev; 1470 struct midi_info *mi; 1471 { 1472 } 1473 1474 int 1475 midiclose(dev, flags, ifmt, p) 1476 dev_t dev; 1477 int flags, ifmt; 1478 struct proc *p; 1479 { 1480 return (ENXIO); 1481 } 1482 1483 int 1484 midi_writebytes(unit, buf, cc) 1485 int unit; 1486 u_char *buf; 1487 int cc; 1488 { 1489 return (ENXIO); 1490 } 1491 #endif /* NMIDI == 0 */ 1492
Indexes created Tue Sep 23 14:10:03 GMT 2025