1 /* $NetBSD: opl.c,v 1.37 2009/09/01 21:48:02 jmcneill 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@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 /* 33 * The OPL3 (YMF262) manual can be found at 34 * ftp://ftp.yamahayst.com/Fax_Back_Doc/sound/YMF262.PDF 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: opl.c,v 1.37 2009/09/01 21:48:02 jmcneill Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/errno.h> 43 #include <sys/ioctl.h> 44 #include <sys/syslog.h> 45 #include <sys/device.h> 46 #include <sys/select.h> 47 #include <sys/malloc.h> 48 49 #include <sys/cpu.h> 50 #include <sys/bus.h> 51 52 #include <sys/audioio.h> 53 #include <sys/midiio.h> 54 #include <dev/audio_if.h> 55 56 #include <dev/midi_if.h> 57 #include <dev/midivar.h> 58 #include <dev/midisynvar.h> 59 60 #include <dev/ic/oplreg.h> 61 #include <dev/ic/oplvar.h> 62 63 #ifdef AUDIO_DEBUG 64 #define DPRINTF(x) if (opldebug) printf x 65 #define DPRINTFN(n,x) if (opldebug >= (n)) printf x 66 int opldebug = 0; 67 #else 68 #define DPRINTF(x) 69 #define DPRINTFN(n,x) 70 #endif 71 72 struct real_voice { 73 u_int8_t voice_num; 74 u_int8_t voice_mode; /* 0=unavailable, 2=2 OP, 4=4 OP */ 75 u_int8_t iooffs; /* I/O port (left or right side) */ 76 u_int8_t op[4]; /* Operator offsets */ 77 }; 78 79 const struct opl_voice voicetab[] = { 80 /* No I/O offs OP1 OP2 OP3 OP4 */ 81 /* --------------------------------------------- */ 82 { 0, OPL_L, {0x00, 0x03, 0x08, 0x0b}, NULL, 0, }, 83 { 1, OPL_L, {0x01, 0x04, 0x09, 0x0c}, NULL, 0, }, 84 { 2, OPL_L, {0x02, 0x05, 0x0a, 0x0d}, NULL, 0, }, 85 86 { 3, OPL_L, {0x08, 0x0b, 0x00, 0x00}, NULL, 0, }, 87 { 4, OPL_L, {0x09, 0x0c, 0x00, 0x00}, NULL, 0, }, 88 { 5, OPL_L, {0x0a, 0x0d, 0x00, 0x00}, NULL, 0, }, 89 90 { 6, OPL_L, {0x10, 0x13, 0x00, 0x00}, NULL, 0, }, 91 { 7, OPL_L, {0x11, 0x14, 0x00, 0x00}, NULL, 0, }, 92 { 8, OPL_L, {0x12, 0x15, 0x00, 0x00}, NULL, 0, }, 93 94 { 0, OPL_R, {0x00, 0x03, 0x08, 0x0b}, NULL, 0, }, 95 { 1, OPL_R, {0x01, 0x04, 0x09, 0x0c}, NULL, 0, }, 96 { 2, OPL_R, {0x02, 0x05, 0x0a, 0x0d}, NULL, 0, }, 97 { 3, OPL_R, {0x08, 0x0b, 0x00, 0x00}, NULL, 0, }, 98 { 4, OPL_R, {0x09, 0x0c, 0x00, 0x00}, NULL, 0, }, 99 { 5, OPL_R, {0x0a, 0x0d, 0x00, 0x00}, NULL, 0, }, 100 101 { 6, OPL_R, {0x10, 0x13, 0x00, 0x00}, NULL, 0, }, 102 { 7, OPL_R, {0x11, 0x14, 0x00, 0x00}, NULL, 0, }, 103 { 8, OPL_R, {0x12, 0x15, 0x00, 0x00}, NULL, 0, } 104 }; 105 106 static void opl_command(struct opl_softc *, int, int, int); 107 void opl_reset(struct opl_softc *); 108 void opl_freq_to_fnum (int freq, int *block, int *fnum); 109 110 int oplsyn_open(midisyn *ms, int); 111 void oplsyn_close(midisyn *); 112 void oplsyn_reset(void *); 113 void oplsyn_attackv(midisyn *, uint_fast16_t, midipitch_t, int16_t); 114 static void oplsyn_repitchv(midisyn *, uint_fast16_t, midipitch_t); 115 static void oplsyn_relevelv(midisyn *, uint_fast16_t, int16_t); 116 static void oplsyn_setv(midisyn *, uint_fast16_t, midipitch_t, int16_t, int); 117 void oplsyn_releasev(midisyn *, uint_fast16_t, uint_fast8_t); 118 int oplsyn_ctlnotice(midisyn *, midictl_evt, uint_fast8_t, uint_fast16_t); 119 void oplsyn_programchange(midisyn *, uint_fast8_t, uint_fast8_t); 120 void oplsyn_loadpatch(midisyn *, struct sysex_info *, struct uio *); 121 static void oplsyn_panhandler(midisyn *, uint_fast8_t); 122 123 void opl_set_op_reg(struct opl_softc *, int, int, int, u_char); 124 void opl_set_ch_reg(struct opl_softc *, int, int, u_char); 125 void opl_load_patch(struct opl_softc *, int); 126 u_int32_t opl_get_block_fnum(midipitch_t mp); 127 int opl_calc_vol(int regbyte, int16_t level_cB); 128 129 struct midisyn_methods opl3_midi = { 130 .open = oplsyn_open, 131 .close = oplsyn_close, 132 .attackv = oplsyn_attackv, 133 .repitchv = oplsyn_repitchv, 134 .relevelv = oplsyn_relevelv, 135 .releasev = oplsyn_releasev, 136 .pgmchg = oplsyn_programchange, 137 .ctlnotice = oplsyn_ctlnotice, 138 }; 139 140 void 141 opl_attach(struct opl_softc *sc) 142 { 143 int i; 144 145 if (!opl_find(sc)) { 146 printf("\nopl: find failed\n"); 147 return; 148 } 149 150 sc->syn.mets = &opl3_midi; 151 snprintf(sc->syn.name, sizeof(sc->syn.name), "%sYamaha OPL%d", 152 sc->syn.name, sc->model); 153 sc->syn.data = sc; 154 sc->syn.nvoice = sc->model == OPL_2 ? OPL2_NVOICE : OPL3_NVOICE; 155 midisyn_attach(&sc->mididev, &sc->syn); 156 157 /* Set up voice table */ 158 for (i = 0; i < OPL3_NVOICE; i++) 159 sc->voices[i] = voicetab[i]; 160 161 opl_reset(sc); 162 163 aprint_normal(": model OPL%d", sc->model); 164 165 /* Set up panpot */ 166 sc->panl = OPL_VOICE_TO_LEFT; 167 sc->panr = OPL_VOICE_TO_RIGHT; 168 if (sc->model == OPL_3 && 169 device_cfdata(sc->mididev.dev)->cf_flags & OPL_FLAGS_SWAP_LR) { 170 sc->panl = OPL_VOICE_TO_RIGHT; 171 sc->panr = OPL_VOICE_TO_LEFT; 172 aprint_normal(": LR swapped"); 173 } 174 175 aprint_normal("\n"); 176 aprint_naive("\n"); 177 178 sc->sc_mididev = 179 midi_attach_mi(&midisyn_hw_if, &sc->syn, sc->mididev.dev); 180 } 181 182 int 183 opl_detach(struct opl_softc *sc, int flags) 184 { 185 int rv = 0; 186 187 if (sc->sc_mididev != NULL) 188 rv = config_detach(sc->sc_mididev, flags); 189 190 return(rv); 191 } 192 193 static void 194 opl_command(struct opl_softc *sc, int offs, int addr, int data) 195 { 196 DPRINTFN(4, ("opl_command: sc=%p, offs=%d addr=0x%02x data=0x%02x\n", 197 sc, offs, addr, data)); 198 offs += sc->offs; 199 bus_space_write_1(sc->iot, sc->ioh, OPL_ADDR+offs, addr); 200 if (sc->model == OPL_2) 201 delay(10); 202 else 203 delay(6); 204 bus_space_write_1(sc->iot, sc->ioh, OPL_DATA+offs, data); 205 if (sc->model == OPL_2) 206 delay(30); 207 else 208 delay(6); 209 } 210 211 int 212 opl_match(bus_space_tag_t iot, bus_space_handle_t ioh, int offs) 213 { 214 struct opl_softc *sc; 215 int rv; 216 217 sc = malloc(sizeof(*sc), M_TEMP, M_WAITOK|M_ZERO); 218 sc->iot = iot; 219 sc->ioh = ioh; 220 sc->offs = offs; 221 rv = opl_find(sc); 222 free(sc, M_TEMP); 223 return rv; 224 } 225 226 int 227 opl_find(struct opl_softc *sc) 228 { 229 u_int8_t status1, status2; 230 231 DPRINTFN(2,("opl_find: ioh=0x%x\n", (int)sc->ioh)); 232 sc->model = OPL_2; /* worst case assumption */ 233 234 /* Reset timers 1 and 2 */ 235 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, 236 OPL_TIMER1_MASK | OPL_TIMER2_MASK); 237 /* Reset the IRQ of the FM chip */ 238 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, OPL_IRQ_RESET); 239 240 /* get status bits */ 241 status1 = bus_space_read_1(sc->iot,sc->ioh,OPL_STATUS+OPL_L+sc->offs); 242 243 opl_command(sc, OPL_L, OPL_TIMER1, -2); /* wait 2 ticks */ 244 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, /* start timer1 */ 245 OPL_TIMER1_START | OPL_TIMER2_MASK); 246 delay(1000); /* wait for timer to expire */ 247 248 /* get status bits again */ 249 status2 = bus_space_read_1(sc->iot,sc->ioh,OPL_STATUS+OPL_L+sc->offs); 250 251 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, 252 OPL_TIMER1_MASK | OPL_TIMER2_MASK); 253 opl_command(sc, OPL_L, OPL_TIMER_CONTROL, OPL_IRQ_RESET); 254 255 DPRINTFN(2,("opl_find: %02x %02x\n", status1, status2)); 256 257 if ((status1 & OPL_STATUS_MASK) != 0 || 258 (status2 & OPL_STATUS_MASK) != (OPL_STATUS_IRQ | OPL_STATUS_FT1)) 259 return (0); 260 261 switch(status1) { 262 case 0x00: 263 case 0x0f: 264 sc->model = OPL_3; 265 break; 266 case 0x06: 267 sc->model = OPL_2; 268 break; 269 default: 270 return (0); 271 } 272 273 DPRINTFN(2,("opl_find: OPL%d at 0x%x detected\n", 274 sc->model, (int)sc->ioh)); 275 return (1); 276 } 277 278 /* 279 * idea: opl_command does a lot of busywaiting, and the driver typically sets 280 * a lot of registers each time a voice-attack happens. some kind of 281 * caching to remember what was last written to each register could save 282 * a lot of cpu. It would have to be smart enough not to interfere with 283 * any necessary sequences of register access expected by the hardware... 284 */ 285 void 286 opl_set_op_reg(struct opl_softc *sc, int base, int voice, int op, u_char value) 287 { 288 struct opl_voice *v = &sc->voices[voice]; 289 opl_command(sc, v->iooffs, base + v->op[op], value); 290 } 291 292 void 293 opl_set_ch_reg(struct opl_softc *sc, int base, int voice, u_char value) 294 { 295 struct opl_voice *v = &sc->voices[voice]; 296 opl_command(sc, v->iooffs, base + v->voiceno, value); 297 } 298 299 300 void 301 opl_load_patch(struct opl_softc *sc, int v) 302 { 303 const struct opl_operators *p = sc->voices[v].patch; 304 305 opl_set_op_reg(sc, OPL_AM_VIB, v, 0, p->ops[OO_CHARS+0]); 306 opl_set_op_reg(sc, OPL_AM_VIB, v, 1, p->ops[OO_CHARS+1]); 307 opl_set_op_reg(sc, OPL_KSL_LEVEL, v, 0, p->ops[OO_KSL_LEV+0]); 308 opl_set_op_reg(sc, OPL_KSL_LEVEL, v, 1, p->ops[OO_KSL_LEV+1]); 309 opl_set_op_reg(sc, OPL_ATTACK_DECAY, v, 0, p->ops[OO_ATT_DEC+0]); 310 opl_set_op_reg(sc, OPL_ATTACK_DECAY, v, 1, p->ops[OO_ATT_DEC+1]); 311 opl_set_op_reg(sc, OPL_SUSTAIN_RELEASE, v, 0, p->ops[OO_SUS_REL+0]); 312 opl_set_op_reg(sc, OPL_SUSTAIN_RELEASE, v, 1, p->ops[OO_SUS_REL+1]); 313 opl_set_op_reg(sc, OPL_WAVE_SELECT, v, 0, p->ops[OO_WAV_SEL+0]); 314 opl_set_op_reg(sc, OPL_WAVE_SELECT, v, 1, p->ops[OO_WAV_SEL+1]); 315 opl_set_ch_reg(sc, OPL_FEEDBACK_CONNECTION, v, p->ops[OO_FB_CONN]); 316 } 317 318 uint32_t 319 opl_get_block_fnum(midipitch_t mp) 320 { 321 midihz18_t hz18; 322 uint32_t block; 323 uint32_t f_num; 324 325 /* 326 * We can get to about note 30 before needing to switch from block 0. 327 * Thereafter, switch block every octave; that will keep f_num in the 328 * upper end of its range, making the most bits available for 329 * resolution. 330 */ 331 block = ( mp - MIDIPITCH_FROM_KEY(19) ) / MIDIPITCH_OCTAVE; 332 if ( block > 7 ) /* subtract wrapped */ 333 block = 0; 334 /* 335 * Could subtract block*MIDIPITCH_OCTAVE here, or >>block later. Later. 336 */ 337 338 hz18 = MIDIPITCH_TO_HZ18(mp); 339 hz18 >>= block; 340 341 /* 342 * The formula in the manual is f_num = ((hz<<19)/fs)>>(block-1) (though 343 * block==0 implies >>-1 which is a C unspecified result). As we already 344 * have hz<<18 and I omitted the -1 when shifting above, what's left to 345 * do now is multiply by 4 and divide by fs, the sampling frequency of 346 * the chip. fs is the master clock frequency fM / 288, fM is 14.32 MHz 347 * so fs is a goofy number around 49.7kHz. The 5th convergent of the 348 * continued fraction matches 4/fs to 9+ significant figures. Doing the 349 * shift first (above) ensures there's room in hz18 to multiply by 9. 350 */ 351 352 f_num = (9 * hz18) / 111875; 353 return ((block << 10) | f_num); 354 } 355 356 357 void 358 opl_reset(struct opl_softc *sc) 359 { 360 int i; 361 362 for (i = 1; i <= OPL_MAXREG; i++) 363 opl_command(sc, OPL_L, OPL_KEYON_BLOCK + i, 0); 364 365 opl_command(sc, OPL_L, OPL_TEST, OPL_ENABLE_WAVE_SELECT); 366 opl_command(sc, OPL_L, OPL_PERCUSSION, 0); 367 if (sc->model == OPL_3) { 368 opl_command(sc, OPL_R, OPL_MODE, OPL3_ENABLE); 369 opl_command(sc, OPL_R,OPL_CONNECTION_SELECT,OPL_NOCONNECTION); 370 } 371 372 for (i = 0; i < MIDI_MAX_CHANS; i++) 373 sc->pan[i] = OPL_VOICE_TO_LEFT | OPL_VOICE_TO_RIGHT; 374 } 375 376 int 377 oplsyn_open(midisyn *ms, int flags) 378 { 379 struct opl_softc *sc = ms->data; 380 381 DPRINTFN(2, ("oplsyn_open: %d\n", flags)); 382 383 #ifndef AUDIO_NO_POWER_CTL 384 if (sc->powerctl) 385 sc->powerctl(sc->powerarg, 1); 386 #endif 387 opl_reset(ms->data); 388 if (sc->spkrctl) 389 sc->spkrctl(sc->spkrarg, 1); 390 return (0); 391 } 392 393 void 394 oplsyn_close(midisyn *ms) 395 { 396 struct opl_softc *sc = ms->data; 397 398 DPRINTFN(2, ("oplsyn_close:\n")); 399 400 /*opl_reset(ms->data);*/ 401 if (sc->spkrctl) 402 sc->spkrctl(sc->spkrarg, 0); 403 #ifndef AUDIO_NO_POWER_CTL 404 if (sc->powerctl) 405 sc->powerctl(sc->powerarg, 0); 406 #endif 407 } 408 409 #if 0 410 void 411 oplsyn_getinfo(void *addr, struct synth_dev *sd) 412 { 413 struct opl_softc *sc = addr; 414 415 sd->name = sc->model == OPL_2 ? "Yamaha OPL2" : "Yamaha OPL3"; 416 sd->type = SYNTH_TYPE_FM; 417 sd->subtype = sc->model == OPL_2 ? SYNTH_SUB_FM_TYPE_ADLIB 418 : SYNTH_SUB_FM_TYPE_OPL3; 419 sd->capabilities = 0; 420 } 421 #endif 422 423 void 424 oplsyn_reset(void *addr) 425 { 426 struct opl_softc *sc = addr; 427 DPRINTFN(3, ("oplsyn_reset:\n")); 428 opl_reset(sc); 429 } 430 431 int 432 opl_calc_vol(int regbyte, int16_t level_cB) 433 { 434 int level = regbyte & OPL_TOTAL_LEVEL_MASK; 435 436 /* 437 * level is a six-bit attenuation, from 0 (full output) 438 * to -48dB (but without the minus sign) in steps of .75 dB. 439 * We'll just add level_cB, after scaling it because it's 440 * in centibels instead and has the customary minus sign. 441 */ 442 443 level += ( -4 * level_cB ) / 30; 444 445 if (level > OPL_TOTAL_LEVEL_MASK) 446 level = OPL_TOTAL_LEVEL_MASK; 447 if (level < 0) 448 level = 0; 449 450 return level & OPL_TOTAL_LEVEL_MASK; 451 } 452 453 #define OPLACT_ARTICULATE 1 454 #define OPLACT_PITCH 2 455 #define OPLACT_LEVEL 4 456 457 void 458 oplsyn_attackv(midisyn *ms, 459 uint_fast16_t voice, midipitch_t mp, int16_t level_cB) 460 { 461 oplsyn_setv(ms, voice, mp, level_cB, 462 OPLACT_ARTICULATE | OPLACT_PITCH | OPLACT_LEVEL); 463 } 464 465 static void 466 oplsyn_repitchv(midisyn *ms, uint_fast16_t voice, midipitch_t mp) 467 { 468 oplsyn_setv(ms, voice, mp, 0, OPLACT_PITCH); 469 } 470 471 static void 472 oplsyn_relevelv(midisyn *ms, uint_fast16_t voice, int16_t level_cB) 473 { 474 oplsyn_setv(ms, voice, 0, level_cB, OPLACT_LEVEL); 475 } 476 477 static void 478 oplsyn_setv(midisyn *ms, 479 uint_fast16_t voice, midipitch_t mp, int16_t level_cB, int act) 480 { 481 struct opl_softc *sc = ms->data; 482 struct opl_voice *v; 483 const struct opl_operators *p; 484 u_int32_t block_fnum; 485 int mult; 486 int c_mult, m_mult; 487 u_int32_t chan; 488 u_int8_t chars0, chars1, ksl0, ksl1, fbc; 489 u_int8_t r20m, r20c, r40m, r40c, rA0, rB0; 490 u_int8_t vol0, vol1; 491 492 DPRINTFN(3, ("%s: %p %d %u %d\n", __func__, sc, voice, 493 mp, level_cB)); 494 495 #ifdef DIAGNOSTIC 496 if (voice >= sc->syn.nvoice) { 497 printf("%s: bad voice %d\n", __func__, voice); 498 return; 499 } 500 #endif 501 v = &sc->voices[voice]; 502 503 if ( act & OPLACT_ARTICULATE ) { 504 /* Turn off old note */ 505 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 0, 0xff); 506 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 1, 0xff); 507 opl_set_ch_reg(sc, OPL_KEYON_BLOCK, voice, 0); 508 509 chan = MS_GETCHAN(&ms->voices[voice]); 510 p = &opl2_instrs[ms->pgms[chan]]; 511 v->patch = p; 512 opl_load_patch(sc, voice); 513 514 fbc = p->ops[OO_FB_CONN]; 515 if (sc->model == OPL_3) { 516 fbc &= ~OPL_STEREO_BITS; 517 fbc |= sc->pan[chan]; 518 } 519 opl_set_ch_reg(sc, OPL_FEEDBACK_CONNECTION, voice, fbc); 520 } else 521 p = v->patch; 522 523 if ( act & OPLACT_LEVEL ) { 524 /* 2 voice */ 525 ksl0 = p->ops[OO_KSL_LEV+0]; 526 ksl1 = p->ops[OO_KSL_LEV+1]; 527 if (p->ops[OO_FB_CONN] & 0x01) { 528 vol0 = opl_calc_vol(ksl0, level_cB); 529 vol1 = opl_calc_vol(ksl1, level_cB); 530 } else { 531 vol0 = ksl0; 532 vol1 = opl_calc_vol(ksl1, level_cB); 533 } 534 r40m = (ksl0 & OPL_KSL_MASK) | vol0; 535 r40c = (ksl1 & OPL_KSL_MASK) | vol1; 536 537 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 0, r40m); 538 opl_set_op_reg(sc, OPL_KSL_LEVEL, voice, 1, r40c); 539 } 540 541 if ( act & OPLACT_PITCH ) { 542 mult = 1; 543 if ( mp > MIDIPITCH_FROM_KEY(114) ) { /* out of mult 1 range */ 544 mult = 4; /* will cover remaining MIDI range */ 545 mp -= 2*MIDIPITCH_OCTAVE; 546 } 547 548 block_fnum = opl_get_block_fnum(mp); 549 550 chars0 = p->ops[OO_CHARS+0]; 551 chars1 = p->ops[OO_CHARS+1]; 552 m_mult = (chars0 & OPL_MULTIPLE_MASK) * mult; 553 c_mult = (chars1 & OPL_MULTIPLE_MASK) * mult; 554 555 if ( 4 == mult ) { 556 if ( 0 == m_mult ) /* The OPL uses 0 to represent .5 */ 557 m_mult = 2; /* but of course 0*mult above did */ 558 if ( 0 == c_mult ) /* not DTRT */ 559 c_mult = 2; 560 } 561 562 if ((m_mult > 15) || (c_mult > 15)) { 563 printf("%s: frequency out of range %u (mult %d)\n", 564 __func__, mp, mult); 565 return; 566 } 567 r20m = (chars0 &~ OPL_MULTIPLE_MASK) | m_mult; 568 r20c = (chars1 &~ OPL_MULTIPLE_MASK) | c_mult; 569 570 rA0 = block_fnum & 0xFF; 571 rB0 = (block_fnum >> 8) | OPL_KEYON_BIT; 572 573 v->rB0 = rB0; 574 575 opl_set_op_reg(sc, OPL_AM_VIB, voice, 0, r20m); 576 opl_set_op_reg(sc, OPL_AM_VIB, voice, 1, r20c); 577 578 opl_set_ch_reg(sc, OPL_FNUM_LOW, voice, rA0); 579 opl_set_ch_reg(sc, OPL_KEYON_BLOCK, voice, rB0); 580 } 581 } 582 583 void 584 oplsyn_releasev(midisyn *ms, uint_fast16_t voice, uint_fast8_t vel) 585 { 586 struct opl_softc *sc = ms->data; 587 struct opl_voice *v; 588 589 DPRINTFN(1, ("%s: %p %d\n", __func__, sc, voice)); 590 591 #ifdef DIAGNOSTIC 592 if (voice >= sc->syn.nvoice) { 593 printf("oplsyn_noteoff: bad voice %d\n", voice); 594 return; 595 } 596 #endif 597 v = &sc->voices[voice]; 598 opl_set_ch_reg(sc, 0xB0, voice, v->rB0 & ~OPL_KEYON_BIT); 599 } 600 601 int 602 oplsyn_ctlnotice(midisyn *ms, 603 midictl_evt evt, uint_fast8_t chan, uint_fast16_t key) 604 { 605 606 DPRINTFN(1, ("%s: %p %d\n", __func__, ms->data, chan)); 607 608 switch (evt) { 609 case MIDICTL_RESET: 610 oplsyn_panhandler(ms, chan); 611 return 1; 612 613 case MIDICTL_CTLR: 614 switch (key) { 615 case MIDI_CTRL_PAN_MSB: 616 oplsyn_panhandler(ms, chan); 617 return 1; 618 } 619 return 0; 620 default: 621 return 0; 622 } 623 } 624 625 /* PROGRAM CHANGE midi event: */ 626 void 627 oplsyn_programchange(midisyn *ms, uint_fast8_t chan, uint_fast8_t prog) 628 { 629 /* sanity checks */ 630 if (chan >= MIDI_MAX_CHANS) 631 return; 632 633 ms->pgms[chan] = prog; 634 } 635 636 void 637 oplsyn_loadpatch(midisyn *ms, struct sysex_info *sysex, 638 struct uio *uio) 639 { 640 #if 0 641 struct opl_softc *sc = ms->data; 642 struct sbi_instrument ins; 643 644 DPRINTFN(1, ("oplsyn_loadpatch: %p\n", sc)); 645 646 memcpy(&ins, sysex, sizeof *sysex); 647 if (uio->uio_resid >= sizeof ins - sizeof *sysex) 648 return EINVAL; 649 uiomove((char *)&ins + sizeof *sysex, sizeof ins - sizeof *sysex, uio); 650 /* XXX */ 651 #endif 652 } 653 654 static void 655 oplsyn_panhandler(midisyn *ms, uint_fast8_t chan) 656 { 657 struct opl_softc *sc = ms->data; 658 uint_fast16_t setting; 659 660 setting = midictl_read(&ms->ctl, chan, MIDI_CTRL_PAN_MSB, 8192); 661 setting >>= 7; /* we used to treat it as MSB only */ 662 sc->pan[chan] = 663 (setting <= OPL_MIDI_CENTER_MAX ? sc->panl : 0) | 664 (setting >= OPL_MIDI_CENTER_MIN ? sc->panr : 0); 665 } 666