1 /* $OpenBSD: umidi.c,v 1.49 2018/09/07 04:03:30 miko Exp $ */ 2 /* $NetBSD: umidi.c,v 1.16 2002/07/11 21:14:32 augustss Exp $ */ 3 /* 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Takuya SHIOZAKI (tshiozak@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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/malloc.h> 36 #include <sys/device.h> 37 #include <sys/ioctl.h> 38 #include <sys/conf.h> 39 #include <sys/fcntl.h> 40 #include <sys/selinfo.h> 41 #include <sys/poll.h> 42 43 #include <dev/usb/usb.h> 44 #include <dev/usb/usbdi.h> 45 #include <dev/usb/usbdi_util.h> 46 47 #include <dev/usb/uaudioreg.h> 48 #include <dev/usb/umidireg.h> 49 #include <dev/usb/umidivar.h> 50 #include <dev/usb/umidi_quirks.h> 51 52 #include <dev/audio_if.h> 53 #include <dev/midi_if.h> 54 55 #ifdef UMIDI_DEBUG 56 #define DPRINTF(x) if (umididebug) printf x 57 #define DPRINTFN(n,x) if (umididebug >= (n)) printf x 58 int umididebug = 0; 59 #else 60 #define DPRINTF(x) 61 #define DPRINTFN(n,x) 62 #endif 63 64 65 static int umidi_open(void *, int, 66 void (*)(void *, int), void (*)(void *), void *); 67 static void umidi_close(void *); 68 static int umidi_output(void *, int); 69 static void umidi_flush(void *); 70 static void umidi_getinfo(void *, struct midi_info *); 71 72 static usbd_status alloc_pipe(struct umidi_endpoint *); 73 static void free_pipe(struct umidi_endpoint *); 74 75 static usbd_status alloc_all_endpoints(struct umidi_softc *); 76 static void free_all_endpoints(struct umidi_softc *); 77 78 static usbd_status alloc_all_jacks(struct umidi_softc *); 79 static void free_all_jacks(struct umidi_softc *); 80 static usbd_status bind_jacks_to_mididev(struct umidi_softc *, 81 struct umidi_jack *, 82 struct umidi_jack *, 83 struct umidi_mididev *); 84 static void unbind_jacks_from_mididev(struct umidi_mididev *); 85 static void unbind_all_jacks(struct umidi_softc *); 86 static usbd_status assign_all_jacks_automatically(struct umidi_softc *); 87 static usbd_status open_out_jack(struct umidi_jack *, void *, 88 void (*)(void *)); 89 static usbd_status open_in_jack(struct umidi_jack *, void *, 90 void (*)(void *, int)); 91 static void close_jack(struct umidi_jack *); 92 93 static usbd_status attach_mididev(struct umidi_softc *, 94 struct umidi_mididev *); 95 static usbd_status detach_mididev(struct umidi_mididev *, int); 96 static usbd_status deactivate_mididev(struct umidi_mididev *); 97 static usbd_status alloc_all_mididevs(struct umidi_softc *, int); 98 static void free_all_mididevs(struct umidi_softc *); 99 static usbd_status attach_all_mididevs(struct umidi_softc *); 100 static usbd_status detach_all_mididevs(struct umidi_softc *, int); 101 static usbd_status deactivate_all_mididevs(struct umidi_softc *); 102 103 #ifdef UMIDI_DEBUG 104 static void dump_sc(struct umidi_softc *); 105 static void dump_ep(struct umidi_endpoint *); 106 static void dump_jack(struct umidi_jack *); 107 #endif 108 109 static void init_packet(struct umidi_packet *); 110 111 static usbd_status start_input_transfer(struct umidi_endpoint *); 112 static usbd_status start_output_transfer(struct umidi_endpoint *); 113 static int out_jack_output(struct umidi_jack *, int); 114 static void out_jack_flush(struct umidi_jack *); 115 static void in_intr(struct usbd_xfer *, void *, usbd_status); 116 static void out_intr(struct usbd_xfer *, void *, usbd_status); 117 static int out_build_packet(int, struct umidi_packet *, uByte, u_char *); 118 119 120 struct midi_hw_if umidi_hw_if = { 121 umidi_open, 122 umidi_close, 123 umidi_output, 124 umidi_flush, /* flush */ 125 umidi_getinfo, 126 0, /* ioctl */ 127 }; 128 129 int umidi_match(struct device *, void *, void *); 130 void umidi_attach(struct device *, struct device *, void *); 131 int umidi_detach(struct device *, int); 132 int umidi_activate(struct device *, int); 133 134 struct cfdriver umidi_cd = { 135 NULL, "umidi", DV_DULL 136 }; 137 138 const struct cfattach umidi_ca = { 139 sizeof(struct umidi_softc), 140 umidi_match, 141 umidi_attach, 142 umidi_detach, 143 umidi_activate, 144 }; 145 146 int 147 umidi_match(struct device *parent, void *match, void *aux) 148 { 149 struct usb_attach_arg *uaa = aux; 150 usb_interface_descriptor_t *id; 151 152 DPRINTFN(1,("%s\n", __func__)); 153 154 if (uaa->iface == NULL) 155 return UMATCH_NONE; 156 157 if (umidi_search_quirk(uaa->vendor, uaa->product, uaa->ifaceno)) 158 return UMATCH_IFACECLASS_IFACESUBCLASS; 159 160 id = usbd_get_interface_descriptor(uaa->iface); 161 if (id!=NULL && 162 id->bInterfaceClass==UICLASS_AUDIO && 163 id->bInterfaceSubClass==UISUBCLASS_MIDISTREAM) 164 return UMATCH_IFACECLASS_IFACESUBCLASS; 165 166 return UMATCH_NONE; 167 } 168 169 void 170 umidi_attach(struct device *parent, struct device *self, void *aux) 171 { 172 usbd_status err; 173 struct umidi_softc *sc = (struct umidi_softc *)self; 174 struct usb_attach_arg *uaa = aux; 175 int i; 176 177 DPRINTFN(1,("%s\n", __func__)); 178 179 sc->sc_iface = uaa->iface; 180 sc->sc_udev = uaa->device; 181 182 sc->sc_quirk = 183 umidi_search_quirk(uaa->vendor, uaa->product, uaa->ifaceno); 184 printf("%s: ", sc->sc_dev.dv_xname); 185 umidi_print_quirk(sc->sc_quirk); 186 187 err = alloc_all_endpoints(sc); 188 if (err!=USBD_NORMAL_COMPLETION) 189 goto error; 190 err = alloc_all_jacks(sc); 191 if (err!=USBD_NORMAL_COMPLETION) { 192 free_all_endpoints(sc); 193 goto error; 194 } 195 printf("%s: out=%d, in=%d\n", 196 sc->sc_dev.dv_xname, 197 sc->sc_out_num_jacks, sc->sc_in_num_jacks); 198 199 err = assign_all_jacks_automatically(sc); 200 if (err!=USBD_NORMAL_COMPLETION) { 201 unbind_all_jacks(sc); 202 free_all_jacks(sc); 203 free_all_endpoints(sc); 204 goto error; 205 } 206 err = attach_all_mididevs(sc); 207 if (err!=USBD_NORMAL_COMPLETION) { 208 unbind_all_jacks(sc); 209 free_all_jacks(sc); 210 free_all_endpoints(sc); 211 goto error; 212 } 213 214 #ifdef UMIDI_DEBUG 215 dump_sc(sc); 216 #endif 217 218 for (i = 0; i < sc->sc_in_num_endpoints; i++) 219 (void)start_input_transfer(&sc->sc_in_ep[i]); 220 return; 221 error: 222 printf("%s: disabled.\n", sc->sc_dev.dv_xname); 223 usbd_deactivate(sc->sc_udev); 224 } 225 226 int 227 umidi_activate(struct device *self, int act) 228 { 229 struct umidi_softc *sc = (struct umidi_softc *)self; 230 231 if (act == DVACT_DEACTIVATE) { 232 DPRINTFN(1,("%s (deactivate)\n", __func__)); 233 usbd_deactivate(sc->sc_udev); 234 deactivate_all_mididevs(sc); 235 } 236 return 0; 237 } 238 239 int 240 umidi_detach(struct device *self, int flags) 241 { 242 struct umidi_softc *sc = (struct umidi_softc *)self; 243 244 DPRINTFN(1,("%s\n", __func__)); 245 246 detach_all_mididevs(sc, flags); 247 free_all_mididevs(sc); 248 free_all_jacks(sc); 249 free_all_endpoints(sc); 250 251 return 0; 252 } 253 254 255 /* 256 * midi_if stuffs 257 */ 258 int 259 umidi_open(void *addr, 260 int flags, 261 void (*iintr)(void *, int), 262 void (*ointr)(void *), 263 void *arg) 264 { 265 struct umidi_mididev *mididev = addr; 266 struct umidi_softc *sc = mididev->sc; 267 268 DPRINTF(("%s: sc=%p\n", __func__, sc)); 269 270 if (!sc) 271 return ENXIO; 272 if (mididev->opened) 273 return EBUSY; 274 if (usbd_is_dying(sc->sc_udev)) 275 return EIO; 276 277 mididev->opened = 1; 278 mididev->flags = flags; 279 if ((mididev->flags & FWRITE) && mididev->out_jack) 280 open_out_jack(mididev->out_jack, arg, ointr); 281 if ((mididev->flags & FREAD) && mididev->in_jack) 282 open_in_jack(mididev->in_jack, arg, iintr); 283 return 0; 284 } 285 286 void 287 umidi_close(void *addr) 288 { 289 int s; 290 struct umidi_mididev *mididev = addr; 291 292 s = splusb(); 293 if ((mididev->flags & FWRITE) && mididev->out_jack) 294 close_jack(mididev->out_jack); 295 if ((mididev->flags & FREAD) && mididev->in_jack) 296 close_jack(mididev->in_jack); 297 mididev->opened = 0; 298 splx(s); 299 } 300 301 int 302 umidi_output(void *addr, int d) 303 { 304 struct umidi_mididev *mididev = addr; 305 306 if (!mididev->out_jack || !mididev->opened) 307 return 1; 308 309 return out_jack_output(mididev->out_jack, d); 310 } 311 312 void 313 umidi_flush(void *addr) 314 { 315 struct umidi_mididev *mididev = addr; 316 317 if (!mididev->out_jack || !mididev->opened) 318 return; 319 320 return out_jack_flush(mididev->out_jack); 321 } 322 323 void 324 umidi_getinfo(void *addr, struct midi_info *mi) 325 { 326 struct umidi_mididev *mididev = addr; 327 328 mi->name = "USB MIDI I/F"; /* XXX: model name */ 329 mi->props = MIDI_PROP_OUT_INTR; 330 if (mididev->in_jack) 331 mi->props |= MIDI_PROP_CAN_INPUT; 332 } 333 334 335 /* 336 * each endpoint stuffs 337 */ 338 339 /* alloc/free pipe */ 340 static usbd_status 341 alloc_pipe(struct umidi_endpoint *ep) 342 { 343 struct umidi_softc *sc = ep->sc; 344 usbd_status err; 345 346 DPRINTF(("%s: alloc_pipe %p\n", sc->sc_dev.dv_xname, ep)); 347 SIMPLEQ_INIT(&ep->intrq); 348 ep->pending = 0; 349 ep->busy = 0; 350 ep->used = 0; 351 ep->xfer = usbd_alloc_xfer(sc->sc_udev); 352 if (ep->xfer == NULL) 353 return USBD_NOMEM; 354 ep->buffer = usbd_alloc_buffer(ep->xfer, ep->packetsize); 355 if (ep->buffer == NULL) { 356 usbd_free_xfer(ep->xfer); 357 return USBD_NOMEM; 358 } 359 err = usbd_open_pipe(sc->sc_iface, ep->addr, 0, &ep->pipe); 360 if (err != USBD_NORMAL_COMPLETION) { 361 usbd_free_xfer(ep->xfer); 362 return err; 363 } 364 return USBD_NORMAL_COMPLETION; 365 } 366 367 static void 368 free_pipe(struct umidi_endpoint *ep) 369 { 370 DPRINTF(("%s: %s %p\n", ep->sc->sc_dev.dv_xname, __func__, ep)); 371 usbd_abort_pipe(ep->pipe); 372 usbd_close_pipe(ep->pipe); 373 usbd_free_xfer(ep->xfer); 374 } 375 376 377 /* alloc/free the array of endpoint structures */ 378 379 static usbd_status alloc_all_endpoints_fixed_ep(struct umidi_softc *); 380 static usbd_status alloc_all_endpoints_yamaha(struct umidi_softc *); 381 static usbd_status alloc_all_endpoints_genuine(struct umidi_softc *); 382 383 static usbd_status 384 alloc_all_endpoints(struct umidi_softc *sc) 385 { 386 usbd_status err; 387 struct umidi_endpoint *ep; 388 int i; 389 390 sc->sc_out_num_jacks = sc->sc_in_num_jacks = 0; 391 392 if (UMQ_ISTYPE(sc, UMQ_TYPE_FIXED_EP)) 393 err = alloc_all_endpoints_fixed_ep(sc); 394 else if (UMQ_ISTYPE(sc, UMQ_TYPE_YAMAHA)) 395 err = alloc_all_endpoints_yamaha(sc); 396 else 397 err = alloc_all_endpoints_genuine(sc); 398 if (err!=USBD_NORMAL_COMPLETION) 399 return err; 400 401 ep = sc->sc_endpoints; 402 for (i=sc->sc_out_num_endpoints+sc->sc_in_num_endpoints; i>0; i--) { 403 err = alloc_pipe(ep); 404 if (err!=USBD_NORMAL_COMPLETION) { 405 while(ep != sc->sc_endpoints) { 406 ep--; 407 free_pipe(ep); 408 } 409 free(sc->sc_endpoints, M_USBDEV, 0); 410 sc->sc_endpoints = sc->sc_out_ep = sc->sc_in_ep = NULL; 411 break; 412 } 413 ep++; 414 } 415 return err; 416 } 417 418 static void 419 free_all_endpoints(struct umidi_softc *sc) 420 { 421 int i; 422 423 for (i=0; i<sc->sc_in_num_endpoints+sc->sc_out_num_endpoints; i++) 424 free_pipe(&sc->sc_endpoints[i]); 425 if (sc->sc_endpoints != NULL) 426 free(sc->sc_endpoints, M_USBDEV, 0); 427 sc->sc_endpoints = sc->sc_out_ep = sc->sc_in_ep = NULL; 428 } 429 430 static usbd_status 431 alloc_all_endpoints_fixed_ep(struct umidi_softc *sc) 432 { 433 struct umq_fixed_ep_desc *fp; 434 struct umidi_endpoint *ep; 435 usb_endpoint_descriptor_t *epd; 436 int i; 437 438 fp = umidi_get_quirk_data_from_type(sc->sc_quirk, 439 UMQ_TYPE_FIXED_EP); 440 sc->sc_out_num_endpoints = fp->num_out_ep; 441 sc->sc_in_num_endpoints = fp->num_in_ep; 442 sc->sc_endpoints = mallocarray(sc->sc_out_num_endpoints + 443 sc->sc_in_num_endpoints, sizeof(*sc->sc_out_ep), M_USBDEV, 444 M_WAITOK | M_CANFAIL); 445 if (!sc->sc_endpoints) 446 return USBD_NOMEM; 447 sc->sc_out_ep = sc->sc_out_num_endpoints ? sc->sc_endpoints : NULL; 448 sc->sc_in_ep = 449 sc->sc_in_num_endpoints ? 450 sc->sc_endpoints+sc->sc_out_num_endpoints : NULL; 451 452 ep = &sc->sc_out_ep[0]; 453 for (i=0; i<sc->sc_out_num_endpoints; i++) { 454 epd = usbd_interface2endpoint_descriptor( 455 sc->sc_iface, 456 fp->out_ep[i].ep); 457 if (!epd) { 458 DPRINTF(("%s: cannot get endpoint descriptor(out:%d)\n", 459 sc->sc_dev.dv_xname, fp->out_ep[i].ep)); 460 goto error; 461 } 462 if (UE_GET_XFERTYPE(epd->bmAttributes)!=UE_BULK || 463 UE_GET_DIR(epd->bEndpointAddress)!=UE_DIR_OUT) { 464 printf("%s: illegal endpoint(out:%d)\n", 465 sc->sc_dev.dv_xname, fp->out_ep[i].ep); 466 goto error; 467 } 468 ep->sc = sc; 469 ep->packetsize = UGETW(epd->wMaxPacketSize); 470 ep->addr = epd->bEndpointAddress; 471 ep->num_jacks = fp->out_ep[i].num_jacks; 472 sc->sc_out_num_jacks += fp->out_ep[i].num_jacks; 473 ep->num_open = 0; 474 memset(ep->jacks, 0, sizeof(ep->jacks)); 475 ep++; 476 } 477 ep = &sc->sc_in_ep[0]; 478 for (i=0; i<sc->sc_in_num_endpoints; i++) { 479 epd = usbd_interface2endpoint_descriptor( 480 sc->sc_iface, 481 fp->in_ep[i].ep); 482 if (!epd) { 483 DPRINTF(("%s: cannot get endpoint descriptor(in:%d)\n", 484 sc->sc_dev.dv_xname, fp->in_ep[i].ep)); 485 goto error; 486 } 487 if (UE_GET_XFERTYPE(epd->bmAttributes)!=UE_BULK || 488 UE_GET_DIR(epd->bEndpointAddress)!=UE_DIR_IN) { 489 printf("%s: illegal endpoint(in:%d)\n", 490 sc->sc_dev.dv_xname, fp->in_ep[i].ep); 491 goto error; 492 } 493 ep->sc = sc; 494 ep->addr = epd->bEndpointAddress; 495 ep->packetsize = UGETW(epd->wMaxPacketSize); 496 ep->num_jacks = fp->in_ep[i].num_jacks; 497 sc->sc_in_num_jacks += fp->in_ep[i].num_jacks; 498 ep->num_open = 0; 499 memset(ep->jacks, 0, sizeof(ep->jacks)); 500 ep++; 501 } 502 503 return USBD_NORMAL_COMPLETION; 504 error: 505 free(sc->sc_endpoints, M_USBDEV, 0); 506 sc->sc_endpoints = NULL; 507 return USBD_INVAL; 508 } 509 510 static usbd_status 511 alloc_all_endpoints_yamaha(struct umidi_softc *sc) 512 { 513 /* This driver currently supports max 1in/1out bulk endpoints */ 514 usb_descriptor_t *desc; 515 usb_endpoint_descriptor_t *epd; 516 int out_addr, in_addr, in_packetsize, i, dir; 517 size_t remain, descsize; 518 519 out_addr = in_addr = 0; 520 521 /* detect endpoints */ 522 desc = TO_D(usbd_get_interface_descriptor(sc->sc_iface)); 523 for (i=(int)TO_IFD(desc)->bNumEndpoints-1; i>=0; i--) { 524 epd = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 525 if (UE_GET_XFERTYPE(epd->bmAttributes) == UE_BULK) { 526 dir = UE_GET_DIR(epd->bEndpointAddress); 527 if (dir==UE_DIR_OUT && !out_addr) 528 out_addr = epd->bEndpointAddress; 529 else if (dir==UE_DIR_IN && !in_addr) { 530 in_addr = epd->bEndpointAddress; 531 in_packetsize = UGETW(epd->wMaxPacketSize); 532 } 533 } 534 } 535 desc = NEXT_D(desc); 536 537 /* count jacks */ 538 if (!(desc->bDescriptorType==UDESC_CS_INTERFACE && 539 desc->bDescriptorSubtype==UMIDI_MS_HEADER)) 540 return USBD_INVAL; 541 remain = (size_t)UGETW(TO_CSIFD(desc)->wTotalLength) - 542 (size_t)desc->bLength; 543 desc = NEXT_D(desc); 544 545 while (remain>=sizeof(usb_descriptor_t)) { 546 descsize = desc->bLength; 547 if (descsize>remain || descsize==0) 548 break; 549 if (desc->bDescriptorType==UDESC_CS_INTERFACE && 550 remain>=UMIDI_JACK_DESCRIPTOR_SIZE) { 551 if (desc->bDescriptorSubtype==UMIDI_OUT_JACK) 552 sc->sc_out_num_jacks++; 553 else if (desc->bDescriptorSubtype==UMIDI_IN_JACK) 554 sc->sc_in_num_jacks++; 555 } 556 desc = NEXT_D(desc); 557 remain-=descsize; 558 } 559 560 /* validate some parameters */ 561 if (sc->sc_out_num_jacks>UMIDI_MAX_EPJACKS) 562 sc->sc_out_num_jacks = UMIDI_MAX_EPJACKS; 563 if (sc->sc_in_num_jacks>UMIDI_MAX_EPJACKS) 564 sc->sc_in_num_jacks = UMIDI_MAX_EPJACKS; 565 if (sc->sc_out_num_jacks && out_addr) 566 sc->sc_out_num_endpoints = 1; 567 else { 568 sc->sc_out_num_endpoints = 0; 569 sc->sc_out_num_jacks = 0; 570 } 571 if (sc->sc_in_num_jacks && in_addr) 572 sc->sc_in_num_endpoints = 1; 573 else { 574 sc->sc_in_num_endpoints = 0; 575 sc->sc_in_num_jacks = 0; 576 } 577 sc->sc_endpoints = mallocarray(sc->sc_out_num_endpoints + 578 sc->sc_in_num_endpoints, sizeof(struct umidi_endpoint), 579 M_USBDEV, M_WAITOK | M_CANFAIL); 580 if (!sc->sc_endpoints) 581 return USBD_NOMEM; 582 if (sc->sc_out_num_endpoints) { 583 sc->sc_out_ep = sc->sc_endpoints; 584 sc->sc_out_ep->sc = sc; 585 sc->sc_out_ep->addr = out_addr; 586 sc->sc_out_ep->packetsize = UGETW(epd->wMaxPacketSize); 587 sc->sc_out_ep->num_jacks = sc->sc_out_num_jacks; 588 sc->sc_out_ep->num_open = 0; 589 memset(sc->sc_out_ep->jacks, 0, sizeof(sc->sc_out_ep->jacks)); 590 } else 591 sc->sc_out_ep = NULL; 592 593 if (sc->sc_in_num_endpoints) { 594 sc->sc_in_ep = sc->sc_endpoints+sc->sc_out_num_endpoints; 595 sc->sc_in_ep->sc = sc; 596 sc->sc_in_ep->addr = in_addr; 597 sc->sc_in_ep->packetsize = in_packetsize; 598 sc->sc_in_ep->num_jacks = sc->sc_in_num_jacks; 599 sc->sc_in_ep->num_open = 0; 600 memset(sc->sc_in_ep->jacks, 0, sizeof(sc->sc_in_ep->jacks)); 601 } else 602 sc->sc_in_ep = NULL; 603 604 return USBD_NORMAL_COMPLETION; 605 } 606 607 static usbd_status 608 alloc_all_endpoints_genuine(struct umidi_softc *sc) 609 { 610 usb_interface_descriptor_t *interface_desc; 611 usb_config_descriptor_t *config_desc; 612 usb_descriptor_t *desc; 613 size_t remain, descsize; 614 struct umidi_endpoint *p, *q, *lowest, *endep, tmpep; 615 int epaddr, eppacketsize, num_ep; 616 617 interface_desc = usbd_get_interface_descriptor(sc->sc_iface); 618 num_ep = interface_desc->bNumEndpoints; 619 sc->sc_endpoints = p = mallocarray(num_ep, 620 sizeof(struct umidi_endpoint), M_USBDEV, M_WAITOK | M_CANFAIL); 621 if (!p) 622 return USBD_NOMEM; 623 624 sc->sc_out_num_endpoints = sc->sc_in_num_endpoints = 0; 625 epaddr = -1; 626 627 /* get the list of endpoints for midi stream */ 628 config_desc = usbd_get_config_descriptor(sc->sc_udev); 629 desc = (usb_descriptor_t *) config_desc; 630 remain = (size_t)UGETW(config_desc->wTotalLength); 631 while (remain>=sizeof(usb_descriptor_t)) { 632 descsize = desc->bLength; 633 if (descsize>remain || descsize==0) 634 break; 635 if (desc->bDescriptorType==UDESC_ENDPOINT && 636 remain>=USB_ENDPOINT_DESCRIPTOR_SIZE && 637 UE_GET_XFERTYPE(TO_EPD(desc)->bmAttributes) == UE_BULK) { 638 epaddr = TO_EPD(desc)->bEndpointAddress; 639 eppacketsize = UGETW(TO_EPD(desc)->wMaxPacketSize); 640 } else if (desc->bDescriptorType==UDESC_CS_ENDPOINT && 641 remain>=UMIDI_CS_ENDPOINT_DESCRIPTOR_SIZE && 642 epaddr!=-1) { 643 if (num_ep>0) { 644 num_ep--; 645 p->sc = sc; 646 p->addr = epaddr; 647 p->packetsize = eppacketsize; 648 p->num_jacks = TO_CSEPD(desc)->bNumEmbMIDIJack; 649 if (UE_GET_DIR(epaddr)==UE_DIR_OUT) { 650 sc->sc_out_num_endpoints++; 651 sc->sc_out_num_jacks += p->num_jacks; 652 } else { 653 sc->sc_in_num_endpoints++; 654 sc->sc_in_num_jacks += p->num_jacks; 655 } 656 p++; 657 } 658 } else 659 epaddr = -1; 660 desc = NEXT_D(desc); 661 remain-=descsize; 662 } 663 664 /* sort endpoints */ 665 num_ep = sc->sc_out_num_endpoints + sc->sc_in_num_endpoints; 666 p = sc->sc_endpoints; 667 endep = p + num_ep; 668 while (p<endep) { 669 lowest = p; 670 for (q=p+1; q<endep; q++) { 671 if ((UE_GET_DIR(lowest->addr)==UE_DIR_IN && 672 UE_GET_DIR(q->addr)==UE_DIR_OUT) || 673 ((UE_GET_DIR(lowest->addr)== 674 UE_GET_DIR(q->addr)) && 675 (UE_GET_ADDR(lowest->addr)> 676 UE_GET_ADDR(q->addr)))) 677 lowest = q; 678 } 679 if (lowest != p) { 680 memcpy((void *)&tmpep, (void *)p, sizeof(tmpep)); 681 memcpy((void *)p, (void *)lowest, sizeof(tmpep)); 682 memcpy((void *)lowest, (void *)&tmpep, sizeof(tmpep)); 683 } 684 p->num_open = 0; 685 p++; 686 } 687 688 sc->sc_out_ep = sc->sc_out_num_endpoints ? sc->sc_endpoints : NULL; 689 sc->sc_in_ep = 690 sc->sc_in_num_endpoints ? 691 sc->sc_endpoints+sc->sc_out_num_endpoints : NULL; 692 693 return USBD_NORMAL_COMPLETION; 694 } 695 696 697 /* 698 * jack stuffs 699 */ 700 701 static usbd_status 702 alloc_all_jacks(struct umidi_softc *sc) 703 { 704 int i, j; 705 struct umidi_endpoint *ep; 706 struct umidi_jack *jack, **rjack; 707 708 /* allocate/initialize structures */ 709 sc->sc_jacks = mallocarray(sc->sc_in_num_jacks + sc->sc_out_num_jacks, 710 sizeof(*sc->sc_out_jacks), M_USBDEV, M_WAITOK | M_CANFAIL); 711 if (!sc->sc_jacks) 712 return USBD_NOMEM; 713 sc->sc_out_jacks = 714 sc->sc_out_num_jacks ? sc->sc_jacks : NULL; 715 sc->sc_in_jacks = 716 sc->sc_in_num_jacks ? sc->sc_jacks+sc->sc_out_num_jacks : NULL; 717 718 jack = &sc->sc_out_jacks[0]; 719 for (i=0; i<sc->sc_out_num_jacks; i++) { 720 jack->opened = 0; 721 jack->binded = 0; 722 jack->arg = NULL; 723 jack->u.out.intr = NULL; 724 jack->intr = 0; 725 jack->cable_number = i; 726 jack++; 727 } 728 jack = &sc->sc_in_jacks[0]; 729 for (i=0; i<sc->sc_in_num_jacks; i++) { 730 jack->opened = 0; 731 jack->binded = 0; 732 jack->arg = NULL; 733 jack->u.in.intr = NULL; 734 jack->cable_number = i; 735 jack++; 736 } 737 738 /* assign each jacks to each endpoints */ 739 jack = &sc->sc_out_jacks[0]; 740 ep = &sc->sc_out_ep[0]; 741 for (i=0; i<sc->sc_out_num_endpoints; i++) { 742 rjack = &ep->jacks[0]; 743 for (j=0; j<ep->num_jacks; j++) { 744 *rjack = jack; 745 jack->endpoint = ep; 746 jack++; 747 rjack++; 748 } 749 ep++; 750 } 751 jack = &sc->sc_in_jacks[0]; 752 ep = &sc->sc_in_ep[0]; 753 for (i=0; i<sc->sc_in_num_endpoints; i++) { 754 rjack = &ep->jacks[0]; 755 for (j=0; j<ep->num_jacks; j++) { 756 *rjack = jack; 757 jack->endpoint = ep; 758 jack++; 759 rjack++; 760 } 761 ep++; 762 } 763 764 return USBD_NORMAL_COMPLETION; 765 } 766 767 static void 768 free_all_jacks(struct umidi_softc *sc) 769 { 770 int s, jacks = sc->sc_in_num_jacks + sc->sc_out_num_jacks; 771 772 s = splusb(); 773 if (sc->sc_out_jacks) { 774 free(sc->sc_jacks, M_USBDEV, jacks * sizeof(*sc->sc_out_jacks)); 775 sc->sc_jacks = sc->sc_in_jacks = sc->sc_out_jacks = NULL; 776 sc->sc_out_num_jacks = sc->sc_in_num_jacks = 0; 777 } 778 splx(s); 779 } 780 781 static usbd_status 782 bind_jacks_to_mididev(struct umidi_softc *sc, 783 struct umidi_jack *out_jack, 784 struct umidi_jack *in_jack, 785 struct umidi_mididev *mididev) 786 { 787 if ((out_jack && out_jack->binded) || (in_jack && in_jack->binded)) 788 return USBD_IN_USE; 789 if (mididev->out_jack || mididev->in_jack) 790 return USBD_IN_USE; 791 792 if (out_jack) 793 out_jack->binded = 1; 794 if (in_jack) 795 in_jack->binded = 1; 796 mididev->in_jack = in_jack; 797 mididev->out_jack = out_jack; 798 799 return USBD_NORMAL_COMPLETION; 800 } 801 802 static void 803 unbind_jacks_from_mididev(struct umidi_mididev *mididev) 804 { 805 if ((mididev->flags & FWRITE) && mididev->out_jack) 806 close_jack(mididev->out_jack); 807 if ((mididev->flags & FREAD) && mididev->in_jack) 808 close_jack(mididev->in_jack); 809 810 if (mididev->out_jack) 811 mididev->out_jack->binded = 0; 812 if (mididev->in_jack) 813 mididev->in_jack->binded = 0; 814 mididev->out_jack = mididev->in_jack = NULL; 815 } 816 817 static void 818 unbind_all_jacks(struct umidi_softc *sc) 819 { 820 int i; 821 822 if (sc->sc_mididevs) 823 for (i=0; i<sc->sc_num_mididevs; i++) { 824 unbind_jacks_from_mididev(&sc->sc_mididevs[i]); 825 } 826 } 827 828 static usbd_status 829 assign_all_jacks_automatically(struct umidi_softc *sc) 830 { 831 usbd_status err; 832 int i; 833 struct umidi_jack *out, *in; 834 835 err = 836 alloc_all_mididevs(sc, 837 max(sc->sc_out_num_jacks, sc->sc_in_num_jacks)); 838 if (err!=USBD_NORMAL_COMPLETION) 839 return err; 840 841 for (i=0; i<sc->sc_num_mididevs; i++) { 842 out = (i<sc->sc_out_num_jacks) ? &sc->sc_out_jacks[i]:NULL; 843 in = (i<sc->sc_in_num_jacks) ? &sc->sc_in_jacks[i]:NULL; 844 err = bind_jacks_to_mididev(sc, out, in, &sc->sc_mididevs[i]); 845 if (err!=USBD_NORMAL_COMPLETION) { 846 free_all_mididevs(sc); 847 return err; 848 } 849 } 850 851 return USBD_NORMAL_COMPLETION; 852 } 853 854 static usbd_status 855 open_out_jack(struct umidi_jack *jack, void *arg, void (*intr)(void *)) 856 { 857 if (jack->opened) 858 return USBD_IN_USE; 859 860 jack->arg = arg; 861 jack->u.out.intr = intr; 862 init_packet(&jack->packet); 863 jack->opened = 1; 864 jack->endpoint->num_open++; 865 866 return USBD_NORMAL_COMPLETION; 867 } 868 869 static usbd_status 870 open_in_jack(struct umidi_jack *jack, void *arg, void (*intr)(void *, int)) 871 { 872 if (jack->opened) 873 return USBD_IN_USE; 874 875 jack->arg = arg; 876 jack->u.in.intr = intr; 877 jack->opened = 1; 878 jack->endpoint->num_open++; 879 880 return USBD_NORMAL_COMPLETION; 881 } 882 883 static void 884 close_jack(struct umidi_jack *jack) 885 { 886 if (jack->opened) { 887 jack->opened = 0; 888 jack->endpoint->num_open--; 889 } 890 } 891 892 static usbd_status 893 attach_mididev(struct umidi_softc *sc, struct umidi_mididev *mididev) 894 { 895 if (mididev->sc) 896 return USBD_IN_USE; 897 898 mididev->sc = sc; 899 900 mididev->mdev = midi_attach_mi(&umidi_hw_if, mididev, &sc->sc_dev); 901 902 return USBD_NORMAL_COMPLETION; 903 } 904 905 static usbd_status 906 detach_mididev(struct umidi_mididev *mididev, int flags) 907 { 908 if (!mididev->sc) 909 return USBD_NO_ADDR; 910 911 if (mididev->opened) 912 umidi_close(mididev); 913 unbind_jacks_from_mididev(mididev); 914 915 if (mididev->mdev) 916 config_detach(mididev->mdev, flags); 917 918 mididev->sc = NULL; 919 920 return USBD_NORMAL_COMPLETION; 921 } 922 923 static usbd_status 924 deactivate_mididev(struct umidi_mididev *mididev) 925 { 926 if (mididev->out_jack) 927 mididev->out_jack->binded = 0; 928 if (mididev->in_jack) 929 mididev->in_jack->binded = 0; 930 config_deactivate(mididev->mdev); 931 932 return USBD_NORMAL_COMPLETION; 933 } 934 935 static usbd_status 936 alloc_all_mididevs(struct umidi_softc *sc, int nmidi) 937 { 938 sc->sc_num_mididevs = nmidi; 939 sc->sc_mididevs = mallocarray(nmidi, sizeof(*sc->sc_mididevs), 940 M_USBDEV, M_WAITOK | M_CANFAIL | M_ZERO); 941 if (!sc->sc_mididevs) 942 return USBD_NOMEM; 943 944 return USBD_NORMAL_COMPLETION; 945 } 946 947 static void 948 free_all_mididevs(struct umidi_softc *sc) 949 { 950 if (sc->sc_mididevs) 951 free(sc->sc_mididevs, M_USBDEV, 952 sc->sc_num_mididevs * sizeof(*sc->sc_mididevs)); 953 sc->sc_mididevs = NULL; 954 sc->sc_num_mididevs = 0; 955 } 956 957 static usbd_status 958 attach_all_mididevs(struct umidi_softc *sc) 959 { 960 usbd_status err; 961 int i; 962 963 if (sc->sc_mididevs) 964 for (i=0; i<sc->sc_num_mididevs; i++) { 965 err = attach_mididev(sc, &sc->sc_mididevs[i]); 966 if (err!=USBD_NORMAL_COMPLETION) 967 return err; 968 } 969 970 return USBD_NORMAL_COMPLETION; 971 } 972 973 static usbd_status 974 detach_all_mididevs(struct umidi_softc *sc, int flags) 975 { 976 usbd_status err; 977 int i; 978 979 if (sc->sc_mididevs) 980 for (i=0; i<sc->sc_num_mididevs; i++) { 981 err = detach_mididev(&sc->sc_mididevs[i], flags); 982 if (err!=USBD_NORMAL_COMPLETION) 983 return err; 984 } 985 986 return USBD_NORMAL_COMPLETION; 987 } 988 989 static usbd_status 990 deactivate_all_mididevs(struct umidi_softc *sc) 991 { 992 usbd_status err; 993 int i; 994 995 if (sc->sc_mididevs) 996 for (i=0; i<sc->sc_num_mididevs; i++) { 997 err = deactivate_mididev(&sc->sc_mididevs[i]); 998 if (err!=USBD_NORMAL_COMPLETION) 999 return err; 1000 } 1001 1002 return USBD_NORMAL_COMPLETION; 1003 } 1004 1005 #ifdef UMIDI_DEBUG 1006 static void 1007 dump_sc(struct umidi_softc *sc) 1008 { 1009 int i; 1010 1011 DPRINTFN(10, ("%s: %s\n", sc->sc_dev.dv_xname, __func__)); 1012 for (i=0; i<sc->sc_out_num_endpoints; i++) { 1013 DPRINTFN(10, ("\tout_ep(%p):\n", &sc->sc_out_ep[i])); 1014 dump_ep(&sc->sc_out_ep[i]); 1015 } 1016 for (i=0; i<sc->sc_in_num_endpoints; i++) { 1017 DPRINTFN(10, ("\tin_ep(%p):\n", &sc->sc_in_ep[i])); 1018 dump_ep(&sc->sc_in_ep[i]); 1019 } 1020 } 1021 1022 static void 1023 dump_ep(struct umidi_endpoint *ep) 1024 { 1025 int i; 1026 for (i=0; i<ep->num_jacks; i++) { 1027 DPRINTFN(10, ("\t\tjack(%p):\n", ep->jacks[i])); 1028 dump_jack(ep->jacks[i]); 1029 } 1030 } 1031 static void 1032 dump_jack(struct umidi_jack *jack) 1033 { 1034 DPRINTFN(10, ("\t\t\tep=%p\n", 1035 jack->endpoint)); 1036 } 1037 1038 #endif /* UMIDI_DEBUG */ 1039 1040 1041 1042 /* 1043 * MUX MIDI PACKET 1044 */ 1045 1046 static const int packet_length[16] = { 1047 /*0*/ -1, 1048 /*1*/ -1, 1049 /*2*/ 2, 1050 /*3*/ 3, 1051 /*4*/ 3, 1052 /*5*/ 1, 1053 /*6*/ 2, 1054 /*7*/ 3, 1055 /*8*/ 3, 1056 /*9*/ 3, 1057 /*A*/ 3, 1058 /*B*/ 3, 1059 /*C*/ 2, 1060 /*D*/ 2, 1061 /*E*/ 3, 1062 /*F*/ 1, 1063 }; 1064 1065 #define GET_CN(p) (((unsigned char)(p)>>4)&0x0F) 1066 #define GET_CIN(p) ((unsigned char)(p)&0x0F) 1067 1068 static void 1069 init_packet(struct umidi_packet *packet) 1070 { 1071 packet->status = 0; 1072 packet->index = 0; 1073 } 1074 1075 static usbd_status 1076 start_input_transfer(struct umidi_endpoint *ep) 1077 { 1078 usbd_status err; 1079 usbd_setup_xfer(ep->xfer, ep->pipe, 1080 (void *)ep, 1081 ep->buffer, ep->packetsize, 1082 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, in_intr); 1083 err = usbd_transfer(ep->xfer); 1084 if (err != USBD_NORMAL_COMPLETION && err != USBD_IN_PROGRESS) { 1085 DPRINTF(("%s: %s: usbd_transfer() failed err=%s\n", 1086 ep->sc->sc_dev.dv_xname, __func__, usbd_errstr(err))); 1087 return err; 1088 } 1089 return USBD_NORMAL_COMPLETION; 1090 } 1091 1092 static usbd_status 1093 start_output_transfer(struct umidi_endpoint *ep) 1094 { 1095 usbd_status err; 1096 usbd_setup_xfer(ep->xfer, ep->pipe, 1097 (void *)ep, 1098 ep->buffer, ep->used, 1099 USBD_NO_COPY, USBD_NO_TIMEOUT, out_intr); 1100 err = usbd_transfer(ep->xfer); 1101 if (err != USBD_NORMAL_COMPLETION && err != USBD_IN_PROGRESS) { 1102 DPRINTF(("%s: %s: usbd_transfer() failed err=%s\n", 1103 ep->sc->sc_dev.dv_xname, __func__, usbd_errstr(err))); 1104 return err; 1105 } 1106 ep->used = ep->packetsize; 1107 return USBD_NORMAL_COMPLETION; 1108 } 1109 1110 1111 #ifdef UMIDI_DEBUG 1112 #define DPR_PACKET(dir, sc, p) \ 1113 DPRINTFN(500, \ 1114 ("%s: umidi packet(" #dir "): %02X %02X %02X %02X\n", \ 1115 sc->sc_dev.dv_xname, \ 1116 (unsigned char)(p)->buffer[0], \ 1117 (unsigned char)(p)->buffer[1], \ 1118 (unsigned char)(p)->buffer[2], \ 1119 (unsigned char)(p)->buffer[3])); 1120 #else 1121 #define DPR_PACKET(dir, sc, p) 1122 #endif 1123 1124 static int 1125 out_jack_output(struct umidi_jack *j, int d) 1126 { 1127 struct umidi_endpoint *ep = j->endpoint; 1128 struct umidi_softc *sc = ep->sc; 1129 int s; 1130 1131 if (usbd_is_dying(sc->sc_udev)) 1132 return 1; 1133 if (!j->opened) 1134 return 1; 1135 s = splusb(); 1136 if (ep->busy) { 1137 if (!j->intr) { 1138 SIMPLEQ_INSERT_TAIL(&ep->intrq, j, intrq_entry); 1139 ep->pending++; 1140 j->intr = 1; 1141 } 1142 splx(s); 1143 return 0; 1144 } 1145 if (!out_build_packet(j->cable_number, &j->packet, d, 1146 ep->buffer + ep->used)) { 1147 splx(s); 1148 return 1; 1149 } 1150 ep->used += UMIDI_PACKET_SIZE; 1151 if (ep->used == ep->packetsize) { 1152 ep->busy = 1; 1153 start_output_transfer(ep); 1154 } 1155 splx(s); 1156 return 1; 1157 } 1158 1159 static void 1160 out_jack_flush(struct umidi_jack *j) 1161 { 1162 struct umidi_endpoint *ep = j->endpoint; 1163 int s; 1164 1165 if (usbd_is_dying(ep->sc->sc_udev) || !j->opened) 1166 return; 1167 1168 s = splusb(); 1169 if (ep->used != 0 && !ep->busy) { 1170 ep->busy = 1; 1171 start_output_transfer(ep); 1172 } 1173 splx(s); 1174 } 1175 1176 1177 static void 1178 in_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) 1179 { 1180 int cn, evlen, remain, i; 1181 unsigned char *buf; 1182 struct umidi_endpoint *ep = (struct umidi_endpoint *)priv; 1183 struct umidi_jack *jack; 1184 1185 if (usbd_is_dying(ep->sc->sc_udev)) 1186 return; 1187 1188 usbd_get_xfer_status(xfer, NULL, NULL, &remain, NULL); 1189 if (status != USBD_NORMAL_COMPLETION) { 1190 DPRINTF(("%s: abnormal status: %s\n", __func__, usbd_errstr(status))); 1191 return; 1192 } 1193 buf = ep->buffer; 1194 while (remain >= UMIDI_PACKET_SIZE) { 1195 cn = GET_CN(buf[0]); 1196 if (cn < ep->num_jacks && (jack = ep->jacks[cn]) && 1197 jack->binded && jack->opened && jack->u.in.intr) { 1198 evlen = packet_length[GET_CIN(buf[0])]; 1199 mtx_enter(&audio_lock); 1200 for (i=0; i<evlen; i++) 1201 (*jack->u.in.intr)(jack->arg, buf[i+1]); 1202 mtx_leave(&audio_lock); 1203 } 1204 buf += UMIDI_PACKET_SIZE; 1205 remain -= UMIDI_PACKET_SIZE; 1206 } 1207 (void)start_input_transfer(ep); 1208 } 1209 1210 static void 1211 out_intr(struct usbd_xfer *xfer, void *priv, usbd_status status) 1212 { 1213 struct umidi_endpoint *ep = (struct umidi_endpoint *)priv; 1214 struct umidi_softc *sc = ep->sc; 1215 struct umidi_jack *j; 1216 unsigned pending; 1217 1218 if (usbd_is_dying(sc->sc_udev)) 1219 return; 1220 1221 ep->used = 0; 1222 ep->busy = 0; 1223 for (pending = ep->pending; pending > 0; pending--) { 1224 j = SIMPLEQ_FIRST(&ep->intrq); 1225 #ifdef DIAGNOSTIC 1226 if (j == NULL) { 1227 printf("umidi: missing intr entry\n"); 1228 break; 1229 } 1230 #endif 1231 SIMPLEQ_REMOVE_HEAD(&ep->intrq, intrq_entry); 1232 ep->pending--; 1233 j->intr = 0; 1234 mtx_enter(&audio_lock); 1235 if (j->opened && j->u.out.intr) 1236 (*j->u.out.intr)(j->arg); 1237 mtx_leave(&audio_lock); 1238 } 1239 } 1240 1241 #define UMIDI_VOICELEN(status) (umidi_evlen[((status) >> 4) & 7]) 1242 static const unsigned int umidi_evlen[] = { 4, 4, 4, 4, 3, 3, 4 }; 1243 1244 #define EV_SYSEX 0xf0 1245 #define EV_MTC 0xf1 1246 #define EV_SPP 0xf2 1247 #define EV_SONGSEL 0xf3 1248 #define EV_TUNE_REQ 0xf6 1249 #define EV_SYSEX_STOP 0xf7 1250 1251 static int 1252 out_build_packet(int cable_number, struct umidi_packet *packet, 1253 uByte data, u_char *obuf) 1254 { 1255 if (data >= 0xf8) { /* is it a realtime message ? */ 1256 obuf[0] = data >> 4 | cable_number << 4; 1257 obuf[1] = data; 1258 obuf[2] = 0; 1259 obuf[3] = 0; 1260 return 1; 1261 } 1262 if (data >= 0xf0) { /* is it a common message ? */ 1263 switch(data) { 1264 case EV_SYSEX: 1265 packet->buf[1] = packet->status = data; 1266 packet->index = 2; 1267 break; 1268 case EV_SYSEX_STOP: 1269 if (packet->status != EV_SYSEX) break; 1270 if (packet->index == 0) 1271 packet->index = 1; 1272 packet->status = data; 1273 packet->buf[packet->index++] = data; 1274 packet->buf[0] = (0x4 - 1 + packet->index) | cable_number << 4; 1275 goto packetready; 1276 case EV_TUNE_REQ: 1277 packet->status = data; 1278 packet->buf[0] = 0x5 | cable_number << 4; 1279 packet->index = 1; 1280 goto packetready; 1281 default: 1282 packet->status = data; 1283 break; 1284 } 1285 return 0; 1286 } 1287 if (data >= 0x80) { /* is it a voice message ? */ 1288 packet->status = data; 1289 packet->index = 0; 1290 return 0; 1291 } 1292 1293 /* else it is a data byte */ 1294 if (packet->status >= 0xf0) { 1295 switch(packet->status) { 1296 case EV_SYSEX: /* sysex starts or continues */ 1297 if (packet->index == 0) 1298 packet->index = 1; 1299 1300 packet->buf[packet->index++] = data; 1301 if (packet->index >= UMIDI_PACKET_SIZE) { 1302 packet->buf[0] = 0x4 | cable_number << 4; 1303 goto packetready; 1304 } 1305 break; 1306 case EV_MTC: /* messages with 1 data byte */ 1307 case EV_SONGSEL: 1308 packet->buf[0] = 0x2 | cable_number << 4; 1309 packet->buf[1] = packet->status; 1310 packet->buf[2] = data; 1311 packet->index = 3; 1312 goto packetready; 1313 case EV_SPP: /* messages with 2 data bytes */ 1314 if (packet->index == 0) { 1315 packet->buf[0] = 0x3 | cable_number << 4; 1316 packet->index = 1; 1317 } 1318 packet->buf[packet->index++] = data; 1319 if (packet->index >= UMIDI_PACKET_SIZE) { 1320 packet->buf[1] = packet->status; 1321 goto packetready; 1322 } 1323 break; 1324 default: /* ignore data with unknown status */ 1325 break; 1326 } 1327 return 0; 1328 } 1329 if (packet->status >= 0x80) { /* is it a voice message ? */ 1330 if (packet->index == 0) { 1331 packet->buf[0] = packet->status >> 4 | cable_number << 4; 1332 packet->buf[1] = packet->status; 1333 packet->index = 2; 1334 } 1335 packet->buf[packet->index++] = data; 1336 if (packet->index >= UMIDI_VOICELEN(packet->status)) 1337 goto packetready; 1338 } 1339 /* ignore data with unknown status */ 1340 return 0; 1341 1342 packetready: 1343 while (packet->index < UMIDI_PACKET_SIZE) 1344 packet->buf[packet->index++] = 0; 1345 packet->index = 0; 1346 memcpy(obuf, packet->buf, UMIDI_PACKET_SIZE); 1347 return 1; 1348 } 1349