1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574
|
/*
* Diverse Bristol audio routines.
* Copyright (c) by Nick Copeland <nickycopeland@hotmail.com> 1996,2012
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
/*#define DEBUG */
#include "bristol.h"
#include "bristolmm.h"
#include "bristolmidi.h"
static float *freqbuf = (float *) NULL;
static float *modbuf = (float *) NULL;
static float *osc3buf = (float *) NULL;
static float *noisebuf = (float *) NULL;
static float *scratch = (float *) NULL;
extern int s440holder;
int
bristolGlobalController(Baudio *baudio, u_char controller,
u_char operator, float value)
{
#ifdef DEBUG
printf("bristolGlobalControl(%i, %i, %f)\n", controller, operator, value);
#endif
if (controller == 8)
baudio->extgain = value;
if (controller == 9)
{
if (baudio->glidemax == 0)
/* Take the default glide value */
baudio->glide = value * value * 5.0;
else
baudio->glide = value * value * baudio->glidemax;
}
if (controller == 10)
{
if (operator == 0) {
baudio->gtune = 1.0
+ (baudio->note_diff - 1)
* (value * 2 - 1);
buildCurrentTable(baudio, baudio->gtune);
alterAllNotes(baudio);
} else {
baudio->midi_pitch = value * 24;
}
}
#warning fill this out with a structure for osc3 and noise mxing, etc.
if (controller == 11)
((mMods *) baudio->mixlocals)->mixmod = value;
if (controller == 12)
{
int ivalue = value * CONTROLLER_RANGE;
/*
* These are flags that control the sequencing of the audioEngine.
*/
switch (operator)
{
/*
* Four modifier options.
*/
case 0:
if (ivalue == 0)
baudio->mixflags &= ~OSC3_TRACKING;
else
baudio->mixflags |= OSC3_TRACKING;
break;
case 1:
if (ivalue == 0)
baudio->mixflags &= ~OSC_1_MOD;
else
baudio->mixflags |= OSC_1_MOD;
break;
case 2:
if (ivalue == 0)
baudio->mixflags &= ~FILTER_MOD;
else
baudio->mixflags |= FILTER_MOD;
break;
case 3:
if (ivalue == 0)
baudio->mixflags &= ~FILTER_TRACKING;
else
baudio->mixflags |= FILTER_TRACKING;
break;
case 4:
if (ivalue == 0)
baudio->mixflags &= ~OSC_2_MOD;
else
baudio->mixflags |= OSC_2_MOD;
break;
/*
* A global option - this must move to audiomain via bristolsystem()
*/
case 6:
if (ivalue == 0)
baudio->mixflags &= ~A_440;
else {
s440holder = 0;
baudio->mixflags |= A_440;
}
break;
/*
* Master enable.
*/
case 7:
if (ivalue == 0)
baudio->mixflags &= ~MASTER_ONOFF;
else
baudio->mixflags |= MASTER_ONOFF;
break;
/*
* Five mixer options.
*/
case 10:
if (ivalue == 0)
baudio->mixflags &= ~MIX_OSC1;
else
baudio->mixflags |= MIX_OSC1;
break;
case 11:
if (ivalue == 0)
baudio->mixflags &= ~MIX_OSC2;
else
baudio->mixflags |= MIX_OSC2;
break;
case 12:
if (ivalue == 0)
baudio->mixflags &= ~MIX_OSC3;
else
baudio->mixflags |= MIX_OSC3;
break;
case 13:
if (ivalue == 0)
baudio->mixflags &= ~MIX_EXT;
else
baudio->mixflags |= MIX_EXT;
break;
case 14:
if (ivalue == 0)
baudio->mixflags &= ~MIX_NOISE;
else
baudio->mixflags |= MIX_NOISE;
break;
case 15:
if (ivalue == 0)
baudio->mixflags &= ~BRISTOL_MULTITRIG;
else
baudio->mixflags |= BRISTOL_MULTITRIG;
break;
case 16:
((mMods *) baudio->mixlocals)->mixosc3 = value;
break;
case 17:
((mMods *) baudio->mixlocals)->mixnoise = value;
break;
}
}
/*
* Memory management controls for bristolSound memories.
*/
if (controller == 13)
{
}
return(0);
}
int
operateOneMMVoiceFinal(audioMain *audiomain, Baudio *baudio,
bristolVoice *voice, register float *startbuf)
{
register int samplecount = audiomain->samplecount, i;
register float *adsrbuf, *filtbuf;
/*
* Master ON/OFF is an audiomain flags, but it is typically posted to the
* baudio structure.
*/
if ((voice->baudio->mixflags & MASTER_ONOFF) == 0)
{
#ifdef DEBUG
if ((audiomain->debuglevel & BRISTOL_DEBUG_MASK) > BRISTOL_DEBUG5)
printf("Mini Master OFF\n");
#endif
return(0);
}
/*
* We need to have an external source gain change here.
if (baudio->mixflags & MIX_EXT)
extsig = baudio->extgain;
for (i = 0; i < samplecount; i += 8)
{
*extmult++ *= extsig;
*extmult++ *= extsig;
*extmult++ *= extsig;
*extmult++ *= extsig;
*extmult++ *= extsig;
*extmult++ *= extsig;
*extmult++ *= extsig;
*extmult++ *= extsig;
}
*/
adsrbuf = freqbuf; /* Reusing this for different purposes */
filtbuf = noisebuf; /* Reusing this for different purposes */
bristolbzero(freqbuf, audiomain->segmentsize);
bristolbzero(osc3buf, audiomain->segmentsize);
bristolbzero(noisebuf, audiomain->segmentsize);
bristolbzero(scratch, audiomain->segmentsize);
/*
* Third oscillator. We do this first, since it may be used to modulate
* the first two oscillators.
*/
audiomain->palette[(*baudio->sound[2]).index]->specs->io[0].buf = freqbuf;
audiomain->palette[(*baudio->sound[2]).index]->specs->io[1].buf = osc3buf;
/*
* Fill the wavetable with the correct note value, which may be no kbd
* tracking enabled.
*/
if ((baudio->mixflags & OSC3_TRACKING) == 0)
{
register float *bufptr = freqbuf;
/*
* If we do not have keyboard tracking of Osc-3, then put in a LFO
* frequency. This is about 0.1 Hz, although we should consider
* having an alternative LFO, since this method plays each sample
* about 400 times.
*
* Frequency of OSC-3 without keyboard control is under management of
* midi continuous controller 1.
*/
for (i = 0; i < samplecount; i+=8)
{
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
*bufptr++ = 0.001 + baudio->contcontroller[1] * 0.03125;
}
} else
fillFreqTable(baudio, voice, freqbuf, samplecount, 1);
/*
* And finally operate oscillator 3.
*/
(*baudio->sound[2]).operate(
(audiomain->palette)[0],
voice,
(*baudio->sound[2]).param,
baudio->locals[voice->index][2]);
/*
* If we are mixing the osc3 source, put it into the scratch (along with
* any existing ext source signal).
*/
#warning correct the gain to bein the mix, not in the osc
if (baudio->mixflags & MIX_OSC3)
bufmerge(osc3buf, 1.0, scratch, 1.0, samplecount);
/*
* Noise - we do this early for the same reason as oscillator 3
*/
audiomain->palette[(*baudio->sound[7]).index]->specs->io[0].buf = noisebuf;
(*baudio->sound[7]).operate(
(audiomain->palette)[4],
voice,
(*baudio->sound[7]).param,
voice->locals[voice->index][7]);
/*
* If we are mixing the noise source, put it into the scratch (along with
* any existing ext source signal).
*/
if (baudio->mixflags & MIX_NOISE)
bufmerge(noisebuf, 1.0, scratch, 1.0, samplecount);
/*
* Mix osc3 and noise - these are both in the scratch if we have
* them flagged to be mixed.
#warning convert noise mod to be S&H via OSC3
bufmerge(noisebuf,
((mMods *) baudio->mixlocals)->mixmod * baudio->contcontroller[1],
modbuf, 0.0, samplecount);
*/
for (i = 0; i < samplecount; i+=8)
{
if ((((mMods *) baudio->mixlocals)->lsample < 0) && (osc3buf[i] >= 0))
((mMods *) baudio->mixlocals)->csample = noisebuf[i];
((mMods *) baudio->mixlocals)->lsample = osc3buf[i];
modbuf[i] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
modbuf[i+1] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
modbuf[i+2] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
modbuf[i+3] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
modbuf[i+4] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
modbuf[i+5] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
modbuf[i+6] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
modbuf[i+7] = ((mMods *) baudio->mixlocals)->csample
* ((mMods *) baudio->mixlocals)->mixmod;
}
bufmerge(osc3buf,
(1 - ((mMods *) baudio->mixlocals)->mixmod) * baudio->contcontroller[1],
modbuf, baudio->contcontroller[1], samplecount);
/*
* We need to run through every bristolSound on the baudio sound chain.
* We need to pass the correct set of parameters to each operator, and
* ensure they get the correct local variable set.
*
* First insert our buffer pointers, we do this by inserting the buffers
* into the existing opspec structures.
*/
fillFreqTable(baudio, voice, freqbuf, samplecount, 1);
if (baudio->mixflags & MIX_OSC1)
{
audiomain->palette[(*baudio->sound[0]).index]->specs->io[0].buf
= freqbuf;
audiomain->palette[(*baudio->sound[0]).index]->specs->io[1].buf
= scratch;
/*
* Fill tmpbuf1 with our frequency information
*/
/*
* If we have any mods on the oscillators, we need to put them in here.
* This should be under the control of polypressure and/or
* channelpressure?
*/
if (baudio->mixflags & OSC_1_MOD)
bufmerge(modbuf,
0.5 + (voice->press + voice->chanpressure),
freqbuf, 1.0, samplecount);
(*baudio->sound[0]).operate(
(audiomain->palette)[0],
voice,
(*baudio->sound[0]).param,
voice->locals[voice->index][0]);
}
/*
* Second oscillator
*/
if (baudio->mixflags & MIX_OSC2)
{
audiomain->palette[(*baudio->sound[1]).index]->specs->io[0].buf
= freqbuf;
audiomain->palette[(*baudio->sound[1]).index]->specs->io[1].buf
= scratch;
/*
* Fill tmpbuf1 with our frequency information - should already have it
* done, including mods?
*/
fillFreqTable(baudio, voice, freqbuf, samplecount, 1);
/*
* Put in any mods we want.
*/
if (baudio->mixflags & OSC_2_MOD)
bufmerge(modbuf,
0.5 + (voice->press + voice->chanpressure),
freqbuf, 1.0, samplecount);
/*
* And finally operate this oscillator
*/
(*baudio->sound[1]).operate(
(audiomain->palette)[0],
voice,
(*baudio->sound[1]).param,
voice->locals[voice->index][1]);
}
if ((baudio->mixflags & BRISTOL_MULTITRIG) == 0)
voice->flags &= ~BRISTOL_KEYREON;
/*
* Run the ADSR for the filter, reusing the scratch.
*/
audiomain->palette[(*baudio->sound[3]).index]->specs->io[0].buf = adsrbuf;
(*baudio->sound[3]).operate(
(audiomain->palette)[1],
voice,
(*baudio->sound[3]).param,
voice->locals[voice->index][3]);
/*
* If we have mods on the filter, apply them here.
*/
if (baudio->mixflags & FILTER_MOD)
{
/*
* Rather than just merge, we are going to adjust osc3 to be DC
* to reduce clipping the output signal.
bufmerge(osc3buf, 0.01, adsrbuf, 1.0, samplecount);
for (i = 0; i < samplecount; i+=8)
{
*bufptr++ += 0.05 * (*osc3b++ + 12);
*bufptr++ += 0.05 * (*osc3b++ + 12);
*bufptr++ += 0.05 * (*osc3b++ + 12);
*bufptr++ += 0.05 * (*osc3b++ + 12);
*bufptr++ += 0.05 * (*osc3b++ + 12);
*bufptr++ += 0.05 * (*osc3b++ + 12);
*bufptr++ += 0.05 * (*osc3b++ + 12);
*bufptr++ += 0.05 * (*osc3b++ + 12);
}
*/
bufmerge(modbuf, 0.5, adsrbuf, 1.0, samplecount);
}
if (baudio->mixflags & MIX_EXT)
bufmerge(startbuf, baudio->extgain * 2, scratch, 1.0, samplecount);
bufmerge(scratch, 256.0, scratch, 1.0, samplecount);
/*
* Run the mixed oscillators into the filter. Input and output buffers
* are the same.
*/
bristolbzero(filtbuf, audiomain->segmentsize);
audiomain->palette[(*baudio->sound[4]).index]->specs->io[0].buf = scratch;
audiomain->palette[(*baudio->sound[4]).index]->specs->io[1].buf = adsrbuf;
audiomain->palette[(*baudio->sound[4]).index]->specs->io[2].buf = filtbuf;
(*baudio->sound[4]).operate(
(audiomain->palette)[3],
voice,
(*baudio->sound[4]).param,
voice->locals[voice->index][4]);
/*
* Run the ADSR for the final stage amplifier, reusing the scratch.
*/
audiomain->palette[(*baudio->sound[5]).index]->specs->io[0].buf = adsrbuf;
(*baudio->sound[5]).operate(
(audiomain->palette)[1],
voice,
(*baudio->sound[5]).param,
voice->locals[voice->index][5]);
/*
* Run the mixed oscillators into the amplifier. Input and output buffers
* are the same.
*/
audiomain->palette[(*baudio->sound[6]).index]->specs->io[0].buf = filtbuf;
audiomain->palette[(*baudio->sound[6]).index]->specs->io[1].buf = adsrbuf;
audiomain->palette[(*baudio->sound[6]).index]->specs->io[2].buf =
baudio->leftbuf;
(*baudio->sound[6]).operate(
(audiomain->palette)[2],
voice,
(*baudio->sound[6]).param,
voice->locals[voice->index][6]);
return(0);
}
static int
destroyOneMMVoice(audioMain *audiomain, Baudio *baudio)
{
printf("removing one mini\n");
/*
* We need to leave these, we may have multiple invocations running
*/
return(0);
if (freqbuf != NULL)
bristolfree(freqbuf);
if (modbuf != NULL)
bristolfree(modbuf);
if (osc3buf != NULL)
bristolfree(osc3buf);
if (noisebuf != NULL)
bristolfree(noisebuf);
if (scratch != NULL)
bristolfree(scratch);
freqbuf = NULL;
modbuf = NULL;
osc3buf = NULL;
noisebuf = NULL;
scratch = NULL;
return(0);
}
int
bristolMMInit(audioMain *audiomain, Baudio *baudio)
{
printf("initialising one bristolmini\n");
baudio->soundCount = 8; /* Number of operators in this voice (MM) */
/*
* Assign an array of sound pointers.
*/
baudio->sound = (bristolSound **)
bristolmalloc0(sizeof(bristolOP *) * baudio->soundCount);
baudio->effect = (bristolSound **)
bristolmalloc0(sizeof(bristolOP *) * baudio->soundCount);
initSoundAlgo(0, 0, baudio, audiomain, baudio->sound);
initSoundAlgo(0, 1, baudio, audiomain, baudio->sound);
initSoundAlgo(0, 2, baudio, audiomain, baudio->sound);
/* An ADSR */
initSoundAlgo(1, 3, baudio, audiomain, baudio->sound);
/* A filter */
initSoundAlgo(3, 4, baudio, audiomain, baudio->sound);
/* Another ADSR */
initSoundAlgo(1, 5, baudio, audiomain, baudio->sound);
/* An amplifier */
initSoundAlgo(2, 6, baudio, audiomain, baudio->sound);
/* An noise source */
initSoundAlgo(4, 7, baudio, audiomain, baudio->sound);
baudio->param = bristolGlobalController;
baudio->destroy = destroyOneMMVoice;
baudio->operate = operateOneMMVoiceFinal;
if (freqbuf == (float *) NULL)
freqbuf = (float *) bristolmalloc0(audiomain->segmentsize);
if (modbuf == (float *) NULL)
modbuf = (float *) bristolmalloc0(audiomain->segmentsize);
if (osc3buf == (float *) NULL)
osc3buf = (float *) bristolmalloc0(audiomain->segmentsize);
if (noisebuf == (float *) NULL)
noisebuf = (float *) bristolmalloc0(audiomain->segmentsize);
if (scratch == (float *) NULL)
scratch = (float *) bristolmalloc0(audiomain->segmentsize);
// baudio->mixlocals = bristolmalloc0(sizeof(float));
baudio->mixlocals = (float *) bristolmalloc0(sizeof(mMods));
return(0);
}
|