1 /* 2 * synth callback routines for Emu10k1 3 * 4 * Copyright (C) 2000 Takashi Iwai <tiwai@suse.de> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #include "emu10k1_synth_local.h" 22 #include <sound/asoundef.h> 23 24 /* voice status */ 25 enum { 26 V_FREE=0, V_OFF, V_RELEASED, V_PLAYING, V_END 27 }; 28 29 /* Keeps track of what we are finding */ 30 struct best_voice { 31 unsigned int time; 32 int voice; 33 }; 34 35 /* 36 * prototypes 37 */ 38 static void lookup_voices(struct snd_emux *emux, struct snd_emu10k1 *hw, 39 struct best_voice *best, int active_only); 40 static struct snd_emux_voice *get_voice(struct snd_emux *emux, 41 struct snd_emux_port *port); 42 static int start_voice(struct snd_emux_voice *vp); 43 static void trigger_voice(struct snd_emux_voice *vp); 44 static void release_voice(struct snd_emux_voice *vp); 45 static void update_voice(struct snd_emux_voice *vp, int update); 46 static void terminate_voice(struct snd_emux_voice *vp); 47 static void free_voice(struct snd_emux_voice *vp); 48 static void set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 49 static void set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 50 static void set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp); 51 52 /* 53 * Ensure a value is between two points 54 * macro evaluates its args more than once, so changed to upper-case. 55 */ 56 #define LIMITVALUE(x, a, b) do { if ((x) < (a)) (x) = (a); else if ((x) > (b)) (x) = (b); } while (0) 57 #define LIMITMAX(x, a) do {if ((x) > (a)) (x) = (a); } while (0) 58 59 60 /* 61 * set up operators 62 */ 63 static struct snd_emux_operators emu10k1_ops = { 64 .owner = THIS_MODULE, 65 .get_voice = get_voice, 66 .prepare = start_voice, 67 .trigger = trigger_voice, 68 .release = release_voice, 69 .update = update_voice, 70 .terminate = terminate_voice, 71 .free_voice = free_voice, 72 .sample_new = snd_emu10k1_sample_new, 73 .sample_free = snd_emu10k1_sample_free, 74 }; 75 76 void 77 snd_emu10k1_ops_setup(struct snd_emux *emux) 78 { 79 emux->ops = emu10k1_ops; 80 } 81 82 83 /* 84 * get more voice for pcm 85 * 86 * terminate most inactive voice and give it as a pcm voice. 87 */ 88 int 89 snd_emu10k1_synth_get_voice(struct snd_emu10k1 *hw) 90 { 91 struct snd_emux *emu; 92 struct snd_emux_voice *vp; 93 struct best_voice best[V_END]; 94 unsigned long flags; 95 int i; 96 97 emu = hw->synth; 98 99 spin_lock_irqsave(&emu->voice_lock, flags); 100 lookup_voices(emu, hw, best, 1); /* no OFF voices */ 101 for (i = 0; i < V_END; i++) { 102 if (best[i].voice >= 0) { 103 int ch; 104 vp = &emu->voices[best[i].voice]; 105 if ((ch = vp->ch) < 0) { 106 //printk("synth_get_voice: ch < 0 (%d) ??", i); 107 continue; 108 } 109 vp->emu->num_voices--; 110 vp->ch = -1; 111 vp->state = SNDRV_EMUX_ST_OFF; 112 spin_unlock_irqrestore(&emu->voice_lock, flags); 113 return ch; 114 } 115 } 116 spin_unlock_irqrestore(&emu->voice_lock, flags); 117 118 /* not found */ 119 return -ENOMEM; 120 } 121 122 123 /* 124 * turn off the voice (not terminated) 125 */ 126 static void 127 release_voice(struct snd_emux_voice *vp) 128 { 129 int dcysusv; 130 struct snd_emu10k1 *hw; 131 132 hw = vp->hw; 133 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.modrelease; 134 snd_emu10k1_ptr_write(hw, DCYSUSM, vp->ch, dcysusv); 135 dcysusv = 0x8000 | (unsigned char)vp->reg.parm.volrelease | DCYSUSV_CHANNELENABLE_MASK; 136 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, dcysusv); 137 } 138 139 140 /* 141 * terminate the voice 142 */ 143 static void 144 terminate_voice(struct snd_emux_voice *vp) 145 { 146 struct snd_emu10k1 *hw; 147 148 snd_assert(vp, return); 149 hw = vp->hw; 150 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 151 if (vp->block) { 152 struct snd_emu10k1_memblk *emem; 153 emem = (struct snd_emu10k1_memblk *)vp->block; 154 if (emem->map_locked > 0) 155 emem->map_locked--; 156 } 157 } 158 159 /* 160 * release the voice to system 161 */ 162 static void 163 free_voice(struct snd_emux_voice *vp) 164 { 165 struct snd_emu10k1 *hw; 166 167 hw = vp->hw; 168 /* FIXME: emu10k1_synth is broken. */ 169 /* This can get called with hw == 0 */ 170 /* Problem apparent on plug, unplug then plug */ 171 /* on the Audigy 2 ZS Notebook. */ 172 if (hw && (vp->ch >= 0)) { 173 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00); 174 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 175 // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0); 176 snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff); 177 snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff); 178 snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]); 179 vp->emu->num_voices--; 180 vp->ch = -1; 181 } 182 } 183 184 185 /* 186 * update registers 187 */ 188 static void 189 update_voice(struct snd_emux_voice *vp, int update) 190 { 191 struct snd_emu10k1 *hw; 192 193 hw = vp->hw; 194 if (update & SNDRV_EMUX_UPDATE_VOLUME) 195 snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol); 196 if (update & SNDRV_EMUX_UPDATE_PITCH) 197 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 198 if (update & SNDRV_EMUX_UPDATE_PAN) { 199 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan); 200 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux); 201 } 202 if (update & SNDRV_EMUX_UPDATE_FMMOD) 203 set_fmmod(hw, vp); 204 if (update & SNDRV_EMUX_UPDATE_TREMFREQ) 205 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 206 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) 207 set_fm2frq2(hw, vp); 208 if (update & SNDRV_EMUX_UPDATE_Q) 209 set_filterQ(hw, vp); 210 } 211 212 213 /* 214 * look up voice table - get the best voice in order of preference 215 */ 216 /* spinlock held! */ 217 static void 218 lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw, 219 struct best_voice *best, int active_only) 220 { 221 struct snd_emux_voice *vp; 222 struct best_voice *bp; 223 int i; 224 225 for (i = 0; i < V_END; i++) { 226 best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */; 227 best[i].voice = -1; 228 } 229 230 /* 231 * Go through them all and get a best one to use. 232 * NOTE: could also look at volume and pick the quietest one. 233 */ 234 for (i = 0; i < emu->max_voices; i++) { 235 int state, val; 236 237 vp = &emu->voices[i]; 238 state = vp->state; 239 if (state == SNDRV_EMUX_ST_OFF) { 240 if (vp->ch < 0) { 241 if (active_only) 242 continue; 243 bp = best + V_FREE; 244 } else 245 bp = best + V_OFF; 246 } 247 else if (state == SNDRV_EMUX_ST_RELEASED || 248 state == SNDRV_EMUX_ST_PENDING) { 249 bp = best + V_RELEASED; 250 #if 1 251 val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch); 252 if (! val) 253 bp = best + V_OFF; 254 #endif 255 } 256 else if (state == SNDRV_EMUX_ST_STANDBY) 257 continue; 258 else if (state & SNDRV_EMUX_ST_ON) 259 bp = best + V_PLAYING; 260 else 261 continue; 262 263 /* check if sample is finished playing (non-looping only) */ 264 if (bp != best + V_OFF && bp != best + V_FREE && 265 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { 266 val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch); 267 if (val >= vp->reg.loopstart) 268 bp = best + V_OFF; 269 } 270 271 if (vp->time < bp->time) { 272 bp->time = vp->time; 273 bp->voice = i; 274 } 275 } 276 } 277 278 /* 279 * get an empty voice 280 * 281 * emu->voice_lock is already held. 282 */ 283 static struct snd_emux_voice * 284 get_voice(struct snd_emux *emu, struct snd_emux_port *port) 285 { 286 struct snd_emu10k1 *hw; 287 struct snd_emux_voice *vp; 288 struct best_voice best[V_END]; 289 int i; 290 291 hw = emu->hw; 292 293 lookup_voices(emu, hw, best, 0); 294 for (i = 0; i < V_END; i++) { 295 if (best[i].voice >= 0) { 296 vp = &emu->voices[best[i].voice]; 297 if (vp->ch < 0) { 298 /* allocate a voice */ 299 struct snd_emu10k1_voice *hwvoice; 300 if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL) 301 continue; 302 vp->ch = hwvoice->number; 303 emu->num_voices++; 304 } 305 return vp; 306 } 307 } 308 309 /* not found */ 310 return NULL; 311 } 312 313 /* 314 * prepare envelopes and LFOs 315 */ 316 static int 317 start_voice(struct snd_emux_voice *vp) 318 { 319 unsigned int temp; 320 int ch; 321 unsigned int addr, mapped_offset; 322 struct snd_midi_channel *chan; 323 struct snd_emu10k1 *hw; 324 struct snd_emu10k1_memblk *emem; 325 326 hw = vp->hw; 327 ch = vp->ch; 328 snd_assert(ch >= 0, return -EINVAL); 329 chan = vp->chan; 330 331 emem = (struct snd_emu10k1_memblk *)vp->block; 332 if (emem == NULL) 333 return -EINVAL; 334 emem->map_locked++; 335 if (snd_emu10k1_memblk_map(hw, emem) < 0) { 336 // printk("emu: cannot map!\n"); 337 return -ENOMEM; 338 } 339 mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1; 340 vp->reg.start += mapped_offset; 341 vp->reg.end += mapped_offset; 342 vp->reg.loopstart += mapped_offset; 343 vp->reg.loopend += mapped_offset; 344 345 /* set channel routing */ 346 /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */ 347 if (hw->audigy) { 348 temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) | 349 (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24); 350 snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp); 351 } else { 352 temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) | 353 (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28); 354 snd_emu10k1_ptr_write(hw, FXRT, ch, temp); 355 } 356 357 /* channel to be silent and idle */ 358 snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000); 359 snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF); 360 snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF); 361 snd_emu10k1_ptr_write(hw, PTRX, ch, 0); 362 snd_emu10k1_ptr_write(hw, CPF, ch, 0); 363 364 /* set pitch offset */ 365 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 366 367 /* set envelope parameters */ 368 snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay); 369 snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld); 370 snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus); 371 snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay); 372 snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld); 373 /* decay/sustain parameter for volume envelope is used 374 for triggerg the voice */ 375 376 /* cutoff and volume */ 377 temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol; 378 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp); 379 380 /* modulation envelope heights */ 381 snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe); 382 383 /* lfo1/2 delay */ 384 snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay); 385 snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay); 386 387 /* lfo1 pitch & cutoff shift */ 388 set_fmmod(hw, vp); 389 /* lfo1 volume & freq */ 390 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 391 /* lfo2 pitch & freq */ 392 set_fm2frq2(hw, vp); 393 394 /* reverb and loop start (reverb 8bit, MSB) */ 395 temp = vp->reg.parm.reverb; 396 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; 397 LIMITMAX(temp, 255); 398 addr = vp->reg.loopstart; 399 snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr); 400 401 /* chorus & loop end (chorus 8bit, MSB) */ 402 addr = vp->reg.loopend; 403 temp = vp->reg.parm.chorus; 404 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; 405 LIMITMAX(temp, 255); 406 temp = (temp <<24) | addr; 407 snd_emu10k1_ptr_write(hw, DSL, ch, temp); 408 409 /* clear filter delay memory */ 410 snd_emu10k1_ptr_write(hw, Z1, ch, 0); 411 snd_emu10k1_ptr_write(hw, Z2, ch, 0); 412 413 /* invalidate maps */ 414 temp = (hw->silent_page.addr << 1) | MAP_PTI_MASK; 415 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 416 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 417 #if 0 418 /* cache */ 419 { 420 unsigned int val, sample; 421 val = 32; 422 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 423 sample = 0x80808080; 424 else { 425 sample = 0; 426 val *= 2; 427 } 428 429 /* cache */ 430 snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16); 431 snd_emu10k1_ptr_write(hw, CDE, ch, sample); 432 snd_emu10k1_ptr_write(hw, CDF, ch, sample); 433 434 /* invalidate maps */ 435 temp = ((unsigned int)hw->silent_page.addr << 1) | MAP_PTI_MASK; 436 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 437 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 438 439 /* fill cache */ 440 val -= 4; 441 val <<= 25; 442 val |= 0x1c << 16; 443 snd_emu10k1_ptr_write(hw, CCR, ch, val); 444 } 445 #endif 446 447 /* Q & current address (Q 4bit value, MSB) */ 448 addr = vp->reg.start; 449 temp = vp->reg.parm.filterQ; 450 temp = (temp<<28) | addr; 451 if (vp->apitch < 0xe400) 452 temp |= CCCA_INTERPROM_0; 453 else { 454 unsigned int shift = (vp->apitch - 0xe000) >> 10; 455 temp |= shift << 25; 456 } 457 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 458 temp |= CCCA_8BITSELECT; 459 snd_emu10k1_ptr_write(hw, CCCA, ch, temp); 460 461 /* reset volume */ 462 temp = (unsigned int)vp->vtarget << 16; 463 snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget); 464 snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00); 465 return 0; 466 } 467 468 /* 469 * Start envelope 470 */ 471 static void 472 trigger_voice(struct snd_emux_voice *vp) 473 { 474 unsigned int temp, ptarget; 475 struct snd_emu10k1 *hw; 476 struct snd_emu10k1_memblk *emem; 477 478 hw = vp->hw; 479 480 emem = (struct snd_emu10k1_memblk *)vp->block; 481 if (! emem || emem->mapped_page < 0) 482 return; /* not mapped */ 483 484 #if 0 485 ptarget = (unsigned int)vp->ptarget << 16; 486 #else 487 ptarget = IP_TO_CP(vp->apitch); 488 #endif 489 /* set pitch target and pan (volume) */ 490 temp = ptarget | (vp->apan << 8) | vp->aaux; 491 snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp); 492 493 /* pitch target */ 494 snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget); 495 496 /* trigger voice */ 497 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK); 498 } 499 500 #define MOD_SENSE 18 501 502 /* set lfo1 modulation height and cutoff */ 503 static void 504 set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 505 { 506 unsigned short fmmod; 507 short pitch; 508 unsigned char cutoff; 509 int modulation; 510 511 pitch = (char)(vp->reg.parm.fmmod>>8); 512 cutoff = (vp->reg.parm.fmmod & 0xff); 513 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 514 pitch += (MOD_SENSE * modulation) / 1200; 515 LIMITVALUE(pitch, -128, 127); 516 fmmod = ((unsigned char)pitch<<8) | cutoff; 517 snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod); 518 } 519 520 /* set lfo2 pitch & frequency */ 521 static void 522 set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 523 { 524 unsigned short fm2frq2; 525 short pitch; 526 unsigned char freq; 527 int modulation; 528 529 pitch = (char)(vp->reg.parm.fm2frq2>>8); 530 freq = vp->reg.parm.fm2frq2 & 0xff; 531 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 532 pitch += (MOD_SENSE * modulation) / 1200; 533 LIMITVALUE(pitch, -128, 127); 534 fm2frq2 = ((unsigned char)pitch<<8) | freq; 535 snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2); 536 } 537 538 /* set filterQ */ 539 static void 540 set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 541 { 542 unsigned int val; 543 val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE; 544 val |= (vp->reg.parm.filterQ << 28); 545 snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val); 546 } 547