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 if (snd_BUG_ON(!vp)) 149 return; 150 hw = vp->hw; 151 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 152 if (vp->block) { 153 struct snd_emu10k1_memblk *emem; 154 emem = (struct snd_emu10k1_memblk *)vp->block; 155 if (emem->map_locked > 0) 156 emem->map_locked--; 157 } 158 } 159 160 /* 161 * release the voice to system 162 */ 163 static void 164 free_voice(struct snd_emux_voice *vp) 165 { 166 struct snd_emu10k1 *hw; 167 168 hw = vp->hw; 169 /* FIXME: emu10k1_synth is broken. */ 170 /* This can get called with hw == 0 */ 171 /* Problem apparent on plug, unplug then plug */ 172 /* on the Audigy 2 ZS Notebook. */ 173 if (hw && (vp->ch >= 0)) { 174 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, 0xff00); 175 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0x807f | DCYSUSV_CHANNELENABLE_MASK); 176 // snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, 0); 177 snd_emu10k1_ptr_write(hw, VTFT, vp->ch, 0xffff); 178 snd_emu10k1_ptr_write(hw, CVCF, vp->ch, 0xffff); 179 snd_emu10k1_voice_free(hw, &hw->voices[vp->ch]); 180 vp->emu->num_voices--; 181 vp->ch = -1; 182 } 183 } 184 185 186 /* 187 * update registers 188 */ 189 static void 190 update_voice(struct snd_emux_voice *vp, int update) 191 { 192 struct snd_emu10k1 *hw; 193 194 hw = vp->hw; 195 if (update & SNDRV_EMUX_UPDATE_VOLUME) 196 snd_emu10k1_ptr_write(hw, IFATN_ATTENUATION, vp->ch, vp->avol); 197 if (update & SNDRV_EMUX_UPDATE_PITCH) 198 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 199 if (update & SNDRV_EMUX_UPDATE_PAN) { 200 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_A, vp->ch, vp->apan); 201 snd_emu10k1_ptr_write(hw, PTRX_FXSENDAMOUNT_B, vp->ch, vp->aaux); 202 } 203 if (update & SNDRV_EMUX_UPDATE_FMMOD) 204 set_fmmod(hw, vp); 205 if (update & SNDRV_EMUX_UPDATE_TREMFREQ) 206 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 207 if (update & SNDRV_EMUX_UPDATE_FM2FRQ2) 208 set_fm2frq2(hw, vp); 209 if (update & SNDRV_EMUX_UPDATE_Q) 210 set_filterQ(hw, vp); 211 } 212 213 214 /* 215 * look up voice table - get the best voice in order of preference 216 */ 217 /* spinlock held! */ 218 static void 219 lookup_voices(struct snd_emux *emu, struct snd_emu10k1 *hw, 220 struct best_voice *best, int active_only) 221 { 222 struct snd_emux_voice *vp; 223 struct best_voice *bp; 224 int i; 225 226 for (i = 0; i < V_END; i++) { 227 best[i].time = (unsigned int)-1; /* XXX MAX_?INT really */; 228 best[i].voice = -1; 229 } 230 231 /* 232 * Go through them all and get a best one to use. 233 * NOTE: could also look at volume and pick the quietest one. 234 */ 235 for (i = 0; i < emu->max_voices; i++) { 236 int state, val; 237 238 vp = &emu->voices[i]; 239 state = vp->state; 240 if (state == SNDRV_EMUX_ST_OFF) { 241 if (vp->ch < 0) { 242 if (active_only) 243 continue; 244 bp = best + V_FREE; 245 } else 246 bp = best + V_OFF; 247 } 248 else if (state == SNDRV_EMUX_ST_RELEASED || 249 state == SNDRV_EMUX_ST_PENDING) { 250 bp = best + V_RELEASED; 251 #if 1 252 val = snd_emu10k1_ptr_read(hw, CVCF_CURRENTVOL, vp->ch); 253 if (! val) 254 bp = best + V_OFF; 255 #endif 256 } 257 else if (state == SNDRV_EMUX_ST_STANDBY) 258 continue; 259 else if (state & SNDRV_EMUX_ST_ON) 260 bp = best + V_PLAYING; 261 else 262 continue; 263 264 /* check if sample is finished playing (non-looping only) */ 265 if (bp != best + V_OFF && bp != best + V_FREE && 266 (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_SINGLESHOT)) { 267 val = snd_emu10k1_ptr_read(hw, CCCA_CURRADDR, vp->ch); 268 if (val >= vp->reg.loopstart) 269 bp = best + V_OFF; 270 } 271 272 if (vp->time < bp->time) { 273 bp->time = vp->time; 274 bp->voice = i; 275 } 276 } 277 } 278 279 /* 280 * get an empty voice 281 * 282 * emu->voice_lock is already held. 283 */ 284 static struct snd_emux_voice * 285 get_voice(struct snd_emux *emu, struct snd_emux_port *port) 286 { 287 struct snd_emu10k1 *hw; 288 struct snd_emux_voice *vp; 289 struct best_voice best[V_END]; 290 int i; 291 292 hw = emu->hw; 293 294 lookup_voices(emu, hw, best, 0); 295 for (i = 0; i < V_END; i++) { 296 if (best[i].voice >= 0) { 297 vp = &emu->voices[best[i].voice]; 298 if (vp->ch < 0) { 299 /* allocate a voice */ 300 struct snd_emu10k1_voice *hwvoice; 301 if (snd_emu10k1_voice_alloc(hw, EMU10K1_SYNTH, 1, &hwvoice) < 0 || hwvoice == NULL) 302 continue; 303 vp->ch = hwvoice->number; 304 emu->num_voices++; 305 } 306 return vp; 307 } 308 } 309 310 /* not found */ 311 return NULL; 312 } 313 314 /* 315 * prepare envelopes and LFOs 316 */ 317 static int 318 start_voice(struct snd_emux_voice *vp) 319 { 320 unsigned int temp; 321 int ch; 322 unsigned int addr, mapped_offset; 323 struct snd_midi_channel *chan; 324 struct snd_emu10k1 *hw; 325 struct snd_emu10k1_memblk *emem; 326 327 hw = vp->hw; 328 ch = vp->ch; 329 if (snd_BUG_ON(ch < 0)) 330 return -EINVAL; 331 chan = vp->chan; 332 333 emem = (struct snd_emu10k1_memblk *)vp->block; 334 if (emem == NULL) 335 return -EINVAL; 336 emem->map_locked++; 337 if (snd_emu10k1_memblk_map(hw, emem) < 0) { 338 // printk("emu: cannot map!\n"); 339 return -ENOMEM; 340 } 341 mapped_offset = snd_emu10k1_memblk_offset(emem) >> 1; 342 vp->reg.start += mapped_offset; 343 vp->reg.end += mapped_offset; 344 vp->reg.loopstart += mapped_offset; 345 vp->reg.loopend += mapped_offset; 346 347 /* set channel routing */ 348 /* A = left(0), B = right(1), C = reverb(c), D = chorus(d) */ 349 if (hw->audigy) { 350 temp = FXBUS_MIDI_LEFT | (FXBUS_MIDI_RIGHT << 8) | 351 (FXBUS_MIDI_REVERB << 16) | (FXBUS_MIDI_CHORUS << 24); 352 snd_emu10k1_ptr_write(hw, A_FXRT1, ch, temp); 353 } else { 354 temp = (FXBUS_MIDI_LEFT << 16) | (FXBUS_MIDI_RIGHT << 20) | 355 (FXBUS_MIDI_REVERB << 24) | (FXBUS_MIDI_CHORUS << 28); 356 snd_emu10k1_ptr_write(hw, FXRT, ch, temp); 357 } 358 359 /* channel to be silent and idle */ 360 snd_emu10k1_ptr_write(hw, DCYSUSV, ch, 0x0000); 361 snd_emu10k1_ptr_write(hw, VTFT, ch, 0x0000FFFF); 362 snd_emu10k1_ptr_write(hw, CVCF, ch, 0x0000FFFF); 363 snd_emu10k1_ptr_write(hw, PTRX, ch, 0); 364 snd_emu10k1_ptr_write(hw, CPF, ch, 0); 365 366 /* set pitch offset */ 367 snd_emu10k1_ptr_write(hw, IP, vp->ch, vp->apitch); 368 369 /* set envelope parameters */ 370 snd_emu10k1_ptr_write(hw, ENVVAL, ch, vp->reg.parm.moddelay); 371 snd_emu10k1_ptr_write(hw, ATKHLDM, ch, vp->reg.parm.modatkhld); 372 snd_emu10k1_ptr_write(hw, DCYSUSM, ch, vp->reg.parm.moddcysus); 373 snd_emu10k1_ptr_write(hw, ENVVOL, ch, vp->reg.parm.voldelay); 374 snd_emu10k1_ptr_write(hw, ATKHLDV, ch, vp->reg.parm.volatkhld); 375 /* decay/sustain parameter for volume envelope is used 376 for triggerg the voice */ 377 378 /* cutoff and volume */ 379 temp = (unsigned int)vp->acutoff << 8 | (unsigned char)vp->avol; 380 snd_emu10k1_ptr_write(hw, IFATN, vp->ch, temp); 381 382 /* modulation envelope heights */ 383 snd_emu10k1_ptr_write(hw, PEFE, ch, vp->reg.parm.pefe); 384 385 /* lfo1/2 delay */ 386 snd_emu10k1_ptr_write(hw, LFOVAL1, ch, vp->reg.parm.lfo1delay); 387 snd_emu10k1_ptr_write(hw, LFOVAL2, ch, vp->reg.parm.lfo2delay); 388 389 /* lfo1 pitch & cutoff shift */ 390 set_fmmod(hw, vp); 391 /* lfo1 volume & freq */ 392 snd_emu10k1_ptr_write(hw, TREMFRQ, vp->ch, vp->reg.parm.tremfrq); 393 /* lfo2 pitch & freq */ 394 set_fm2frq2(hw, vp); 395 396 /* reverb and loop start (reverb 8bit, MSB) */ 397 temp = vp->reg.parm.reverb; 398 temp += (int)vp->chan->control[MIDI_CTL_E1_REVERB_DEPTH] * 9 / 10; 399 LIMITMAX(temp, 255); 400 addr = vp->reg.loopstart; 401 snd_emu10k1_ptr_write(hw, PSST, vp->ch, (temp << 24) | addr); 402 403 /* chorus & loop end (chorus 8bit, MSB) */ 404 addr = vp->reg.loopend; 405 temp = vp->reg.parm.chorus; 406 temp += (int)chan->control[MIDI_CTL_E3_CHORUS_DEPTH] * 9 / 10; 407 LIMITMAX(temp, 255); 408 temp = (temp <<24) | addr; 409 snd_emu10k1_ptr_write(hw, DSL, ch, temp); 410 411 /* clear filter delay memory */ 412 snd_emu10k1_ptr_write(hw, Z1, ch, 0); 413 snd_emu10k1_ptr_write(hw, Z2, ch, 0); 414 415 /* invalidate maps */ 416 temp = (hw->silent_page.addr << 1) | MAP_PTI_MASK; 417 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 418 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 419 #if 0 420 /* cache */ 421 { 422 unsigned int val, sample; 423 val = 32; 424 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 425 sample = 0x80808080; 426 else { 427 sample = 0; 428 val *= 2; 429 } 430 431 /* cache */ 432 snd_emu10k1_ptr_write(hw, CCR, ch, 0x1c << 16); 433 snd_emu10k1_ptr_write(hw, CDE, ch, sample); 434 snd_emu10k1_ptr_write(hw, CDF, ch, sample); 435 436 /* invalidate maps */ 437 temp = ((unsigned int)hw->silent_page.addr << 1) | MAP_PTI_MASK; 438 snd_emu10k1_ptr_write(hw, MAPA, ch, temp); 439 snd_emu10k1_ptr_write(hw, MAPB, ch, temp); 440 441 /* fill cache */ 442 val -= 4; 443 val <<= 25; 444 val |= 0x1c << 16; 445 snd_emu10k1_ptr_write(hw, CCR, ch, val); 446 } 447 #endif 448 449 /* Q & current address (Q 4bit value, MSB) */ 450 addr = vp->reg.start; 451 temp = vp->reg.parm.filterQ; 452 temp = (temp<<28) | addr; 453 if (vp->apitch < 0xe400) 454 temp |= CCCA_INTERPROM_0; 455 else { 456 unsigned int shift = (vp->apitch - 0xe000) >> 10; 457 temp |= shift << 25; 458 } 459 if (vp->reg.sample_mode & SNDRV_SFNT_SAMPLE_8BITS) 460 temp |= CCCA_8BITSELECT; 461 snd_emu10k1_ptr_write(hw, CCCA, ch, temp); 462 463 /* reset volume */ 464 temp = (unsigned int)vp->vtarget << 16; 465 snd_emu10k1_ptr_write(hw, VTFT, ch, temp | vp->ftarget); 466 snd_emu10k1_ptr_write(hw, CVCF, ch, temp | 0xff00); 467 return 0; 468 } 469 470 /* 471 * Start envelope 472 */ 473 static void 474 trigger_voice(struct snd_emux_voice *vp) 475 { 476 unsigned int temp, ptarget; 477 struct snd_emu10k1 *hw; 478 struct snd_emu10k1_memblk *emem; 479 480 hw = vp->hw; 481 482 emem = (struct snd_emu10k1_memblk *)vp->block; 483 if (! emem || emem->mapped_page < 0) 484 return; /* not mapped */ 485 486 #if 0 487 ptarget = (unsigned int)vp->ptarget << 16; 488 #else 489 ptarget = IP_TO_CP(vp->apitch); 490 #endif 491 /* set pitch target and pan (volume) */ 492 temp = ptarget | (vp->apan << 8) | vp->aaux; 493 snd_emu10k1_ptr_write(hw, PTRX, vp->ch, temp); 494 495 /* pitch target */ 496 snd_emu10k1_ptr_write(hw, CPF, vp->ch, ptarget); 497 498 /* trigger voice */ 499 snd_emu10k1_ptr_write(hw, DCYSUSV, vp->ch, vp->reg.parm.voldcysus|DCYSUSV_CHANNELENABLE_MASK); 500 } 501 502 #define MOD_SENSE 18 503 504 /* set lfo1 modulation height and cutoff */ 505 static void 506 set_fmmod(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 507 { 508 unsigned short fmmod; 509 short pitch; 510 unsigned char cutoff; 511 int modulation; 512 513 pitch = (char)(vp->reg.parm.fmmod>>8); 514 cutoff = (vp->reg.parm.fmmod & 0xff); 515 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 516 pitch += (MOD_SENSE * modulation) / 1200; 517 LIMITVALUE(pitch, -128, 127); 518 fmmod = ((unsigned char)pitch<<8) | cutoff; 519 snd_emu10k1_ptr_write(hw, FMMOD, vp->ch, fmmod); 520 } 521 522 /* set lfo2 pitch & frequency */ 523 static void 524 set_fm2frq2(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 525 { 526 unsigned short fm2frq2; 527 short pitch; 528 unsigned char freq; 529 int modulation; 530 531 pitch = (char)(vp->reg.parm.fm2frq2>>8); 532 freq = vp->reg.parm.fm2frq2 & 0xff; 533 modulation = vp->chan->gm_modulation + vp->chan->midi_pressure; 534 pitch += (MOD_SENSE * modulation) / 1200; 535 LIMITVALUE(pitch, -128, 127); 536 fm2frq2 = ((unsigned char)pitch<<8) | freq; 537 snd_emu10k1_ptr_write(hw, FM2FRQ2, vp->ch, fm2frq2); 538 } 539 540 /* set filterQ */ 541 static void 542 set_filterQ(struct snd_emu10k1 *hw, struct snd_emux_voice *vp) 543 { 544 unsigned int val; 545 val = snd_emu10k1_ptr_read(hw, CCCA, vp->ch) & ~CCCA_RESONANCE; 546 val |= (vp->reg.parm.filterQ << 28); 547 snd_emu10k1_ptr_write(hw, CCCA, vp->ch, val); 548 } 549