annotate plugin/plugins/SamplePlayer.cpp @ 405:65311fb86166

* Merge rev 1048 (build fixes) from rdf-import branch
author Chris Cannam
date Tue, 29 Apr 2008 09:44:44 +0000
parents 11cacfe5d127
children bdc9bb371a9f
rev   line source
Chris@49 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@0 2
Chris@0 3 /*
Chris@52 4 Sonic Visualiser
Chris@52 5 An audio file viewer and annotation editor.
Chris@52 6 Centre for Digital Music, Queen Mary, University of London.
Chris@0 7
Chris@52 8 This program is free software; you can redistribute it and/or
Chris@52 9 modify it under the terms of the GNU General Public License as
Chris@52 10 published by the Free Software Foundation; either version 2 of the
Chris@52 11 License, or (at your option) any later version. See the file
Chris@52 12 COPYING included with this distribution for more information.
Chris@0 13 */
Chris@0 14
Chris@0 15 /*
Chris@0 16 Based on trivial_sampler from the DSSI distribution
Chris@0 17 (by Chris Cannam, public domain).
Chris@0 18 */
Chris@0 19
Chris@0 20 #include "SamplePlayer.h"
Chris@0 21
Chris@0 22 #include <dssi.h>
Chris@0 23 #include <cmath>
Chris@405 24 #include <cstdlib>
Chris@0 25
Chris@0 26 #include <QMutexLocker>
Chris@0 27 #include <QDir>
Chris@0 28 #include <QFileInfo>
Chris@0 29
Chris@0 30 #include <sndfile.h>
Chris@0 31 #include <samplerate.h>
Chris@0 32 #include <iostream>
Chris@0 33
Chris@0 34 const char *const
Chris@0 35 SamplePlayer::portNames[PortCount] =
Chris@0 36 {
Chris@0 37 "Output",
Chris@0 38 "Tuned (on/off)",
Chris@0 39 "Base Pitch (MIDI)",
Chris@143 40 "Tuning of A (Hz)",
Chris@0 41 "Sustain (on/off)",
Chris@0 42 "Release time (s)"
Chris@0 43 };
Chris@0 44
Chris@0 45 const LADSPA_PortDescriptor
Chris@0 46 SamplePlayer::ports[PortCount] =
Chris@0 47 {
Chris@0 48 LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO,
Chris@0 49 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
Chris@0 50 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
Chris@0 51 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
Chris@0 52 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL
Chris@0 53 };
Chris@0 54
Chris@0 55 const LADSPA_PortRangeHint
Chris@0 56 SamplePlayer::hints[PortCount] =
Chris@0 57 {
Chris@0 58 { 0, 0, 0 },
Chris@0 59 { LADSPA_HINT_DEFAULT_MAXIMUM | LADSPA_HINT_INTEGER |
Chris@0 60 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0, 1 },
Chris@0 61 { LADSPA_HINT_DEFAULT_MIDDLE | LADSPA_HINT_INTEGER |
Chris@0 62 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0, 120 },
Chris@143 63 { LADSPA_HINT_DEFAULT_440 | LADSPA_HINT_LOGARITHMIC |
Chris@144 64 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 400, 499 },
Chris@0 65 { LADSPA_HINT_DEFAULT_MINIMUM | LADSPA_HINT_INTEGER |
Chris@0 66 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0, 1 },
Chris@0 67 { LADSPA_HINT_DEFAULT_MINIMUM | LADSPA_HINT_LOGARITHMIC |
Chris@0 68 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0.001, 2.0 }
Chris@0 69 };
Chris@0 70
Chris@0 71 const LADSPA_Properties
Chris@0 72 SamplePlayer::properties = LADSPA_PROPERTY_HARD_RT_CAPABLE;
Chris@0 73
Chris@0 74 const LADSPA_Descriptor
Chris@0 75 SamplePlayer::ladspaDescriptor =
Chris@0 76 {
Chris@0 77 0, // "Unique" ID
Chris@0 78 "sample_player", // Label
Chris@0 79 properties,
Chris@0 80 "Library Sample Player", // Name
Chris@0 81 "Chris Cannam", // Maker
Chris@0 82 "GPL", // Copyright
Chris@0 83 PortCount,
Chris@0 84 ports,
Chris@0 85 portNames,
Chris@0 86 hints,
Chris@0 87 0, // Implementation data
Chris@0 88 instantiate,
Chris@0 89 connectPort,
Chris@0 90 activate,
Chris@0 91 run,
Chris@0 92 0, // Run adding
Chris@0 93 0, // Set run adding gain
Chris@0 94 deactivate,
Chris@0 95 cleanup
Chris@0 96 };
Chris@0 97
Chris@0 98 const DSSI_Descriptor
Chris@0 99 SamplePlayer::dssiDescriptor =
Chris@0 100 {
Chris@0 101 2, // DSSI API version
Chris@0 102 &ladspaDescriptor,
Chris@75 103 configure,
Chris@0 104 getProgram,
Chris@0 105 selectProgram,
Chris@0 106 getMidiController,
Chris@0 107 runSynth,
Chris@0 108 0, // Run synth adding
Chris@0 109 0, // Run multiple synths
Chris@0 110 0, // Run multiple synths adding
Chris@0 111 receiveHostDescriptor
Chris@0 112 };
Chris@0 113
Chris@0 114 const DSSI_Host_Descriptor *
Chris@0 115 SamplePlayer::hostDescriptor = 0;
Chris@0 116
Chris@0 117
Chris@0 118 const DSSI_Descriptor *
Chris@0 119 SamplePlayer::getDescriptor(unsigned long index)
Chris@0 120 {
Chris@0 121 if (index == 0) return &dssiDescriptor;
Chris@0 122 return 0;
Chris@0 123 }
Chris@0 124
Chris@0 125 SamplePlayer::SamplePlayer(int sampleRate) :
Chris@0 126 m_output(0),
Chris@0 127 m_retune(0),
Chris@0 128 m_basePitch(0),
Chris@143 129 m_concertA(0),
Chris@0 130 m_sustain(0),
Chris@0 131 m_release(0),
Chris@0 132 m_sampleData(0),
Chris@0 133 m_sampleCount(0),
Chris@0 134 m_sampleRate(sampleRate),
Chris@0 135 m_sampleNo(0),
Chris@83 136 m_sampleDir("samples"),
Chris@0 137 m_sampleSearchComplete(false),
Chris@0 138 m_pendingProgramChange(-1)
Chris@0 139 {
Chris@0 140 }
Chris@0 141
Chris@0 142 SamplePlayer::~SamplePlayer()
Chris@0 143 {
Chris@0 144 if (m_sampleData) free(m_sampleData);
Chris@0 145 }
Chris@0 146
Chris@0 147 LADSPA_Handle
Chris@0 148 SamplePlayer::instantiate(const LADSPA_Descriptor *, unsigned long rate)
Chris@0 149 {
Chris@0 150 if (!hostDescriptor || !hostDescriptor->request_non_rt_thread) {
Chris@0 151 std::cerr << "SamplePlayer::instantiate: Host does not provide request_non_rt_thread, not instantiating" << std::endl;
Chris@0 152 return 0;
Chris@0 153 }
Chris@0 154
Chris@0 155 SamplePlayer *player = new SamplePlayer(rate);
Chris@0 156
Chris@0 157 if (hostDescriptor->request_non_rt_thread(player, workThreadCallback)) {
Chris@0 158 std::cerr << "SamplePlayer::instantiate: Host rejected request_non_rt_thread call, not instantiating" << std::endl;
Chris@0 159 delete player;
Chris@0 160 return 0;
Chris@0 161 }
Chris@0 162
Chris@0 163 return player;
Chris@0 164 }
Chris@0 165
Chris@0 166 void
Chris@0 167 SamplePlayer::connectPort(LADSPA_Handle handle,
Chris@0 168 unsigned long port, LADSPA_Data *location)
Chris@0 169 {
Chris@0 170 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 171
Chris@0 172 float **ports[PortCount] = {
Chris@0 173 &player->m_output,
Chris@0 174 &player->m_retune,
Chris@0 175 &player->m_basePitch,
Chris@143 176 &player->m_concertA,
Chris@0 177 &player->m_sustain,
Chris@0 178 &player->m_release
Chris@0 179 };
Chris@0 180
Chris@0 181 *ports[port] = (float *)location;
Chris@0 182 }
Chris@0 183
Chris@0 184 void
Chris@0 185 SamplePlayer::activate(LADSPA_Handle handle)
Chris@0 186 {
Chris@0 187 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 188 QMutexLocker locker(&player->m_mutex);
Chris@0 189
Chris@0 190 player->m_sampleNo = 0;
Chris@0 191
Chris@0 192 for (size_t i = 0; i < Polyphony; ++i) {
Chris@0 193 player->m_ons[i] = -1;
Chris@0 194 player->m_offs[i] = -1;
Chris@0 195 player->m_velocities[i] = 0;
Chris@0 196 }
Chris@0 197 }
Chris@0 198
Chris@0 199 void
Chris@0 200 SamplePlayer::run(LADSPA_Handle handle, unsigned long samples)
Chris@0 201 {
Chris@0 202 runSynth(handle, samples, 0, 0);
Chris@0 203 }
Chris@0 204
Chris@0 205 void
Chris@0 206 SamplePlayer::deactivate(LADSPA_Handle handle)
Chris@0 207 {
Chris@0 208 activate(handle); // both functions just reset the plugin
Chris@0 209 }
Chris@0 210
Chris@0 211 void
Chris@0 212 SamplePlayer::cleanup(LADSPA_Handle handle)
Chris@0 213 {
Chris@0 214 delete (SamplePlayer *)handle;
Chris@0 215 }
Chris@0 216
Chris@75 217 char *
Chris@75 218 SamplePlayer::configure(LADSPA_Handle handle, const char *key, const char *value)
Chris@75 219 {
Chris@83 220 if (key && !strcmp(key, "sampledir")) {
Chris@75 221
Chris@75 222 SamplePlayer *player = (SamplePlayer *)handle;
Chris@75 223
Chris@75 224 QMutexLocker locker(&player->m_mutex);
Chris@75 225
Chris@83 226 if (QFileInfo(value).exists() &&
Chris@83 227 QFileInfo(value).isDir()) {
Chris@81 228
Chris@83 229 player->m_sampleDir = value;
Chris@81 230
Chris@83 231 if (player->m_sampleSearchComplete) {
Chris@83 232 player->m_sampleSearchComplete = false;
Chris@83 233 player->searchSamples();
Chris@83 234 }
Chris@75 235
Chris@83 236 return 0;
Chris@83 237
Chris@83 238 } else {
Chris@197 239 char *buffer = (char *)malloc(strlen(value) + 80);
Chris@197 240 sprintf(buffer, "Sample directory \"%s\" does not exist, leaving unchanged", value);
Chris@197 241 return buffer;
Chris@75 242 }
Chris@75 243 }
Chris@75 244
Chris@75 245 return strdup("Unknown configure key");
Chris@75 246 }
Chris@75 247
Chris@0 248 const DSSI_Program_Descriptor *
Chris@0 249 SamplePlayer::getProgram(LADSPA_Handle handle, unsigned long program)
Chris@0 250 {
Chris@0 251 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 252
Chris@0 253 if (!player->m_sampleSearchComplete) {
Chris@0 254 QMutexLocker locker(&player->m_mutex);
Chris@0 255 if (!player->m_sampleSearchComplete) {
Chris@0 256 player->searchSamples();
Chris@0 257 }
Chris@0 258 }
Chris@0 259 if (program >= player->m_samples.size()) return 0;
Chris@0 260
Chris@0 261 static DSSI_Program_Descriptor descriptor;
Chris@0 262 static char name[60];
Chris@0 263
Chris@0 264 strncpy(name, player->m_samples[program].first.toLocal8Bit().data(), 60);
Chris@0 265 name[59] = '\0';
Chris@0 266
Chris@0 267 descriptor.Bank = 0;
Chris@0 268 descriptor.Program = program;
Chris@0 269 descriptor.Name = name;
Chris@0 270
Chris@0 271 return &descriptor;
Chris@0 272 }
Chris@0 273
Chris@0 274 void
Chris@0 275 SamplePlayer::selectProgram(LADSPA_Handle handle,
Chris@0 276 unsigned long,
Chris@0 277 unsigned long program)
Chris@0 278 {
Chris@0 279 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 280 player->m_pendingProgramChange = program;
Chris@0 281 }
Chris@0 282
Chris@0 283 int
Chris@0 284 SamplePlayer::getMidiController(LADSPA_Handle, unsigned long port)
Chris@0 285 {
Chris@0 286 int controllers[PortCount] = {
Chris@0 287 DSSI_NONE,
Chris@0 288 DSSI_CC(12),
Chris@0 289 DSSI_CC(13),
Chris@0 290 DSSI_CC(64),
Chris@0 291 DSSI_CC(72)
Chris@0 292 };
Chris@0 293
Chris@0 294 return controllers[port];
Chris@0 295 }
Chris@0 296
Chris@0 297 void
Chris@0 298 SamplePlayer::runSynth(LADSPA_Handle handle, unsigned long samples,
Chris@0 299 snd_seq_event_t *events, unsigned long eventCount)
Chris@0 300 {
Chris@0 301 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 302
Chris@0 303 player->runImpl(samples, events, eventCount);
Chris@0 304 }
Chris@0 305
Chris@0 306 void
Chris@0 307 SamplePlayer::receiveHostDescriptor(const DSSI_Host_Descriptor *descriptor)
Chris@0 308 {
Chris@0 309 hostDescriptor = descriptor;
Chris@0 310 }
Chris@0 311
Chris@0 312 void
Chris@0 313 SamplePlayer::workThreadCallback(LADSPA_Handle handle)
Chris@0 314 {
Chris@0 315 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 316
Chris@0 317 if (player->m_pendingProgramChange >= 0) {
Chris@0 318
Chris@117 319 // std::cerr << "SamplePlayer::workThreadCallback: pending program change " << player->m_pendingProgramChange << std::endl;
Chris@0 320
Chris@0 321 player->m_mutex.lock();
Chris@0 322
Chris@0 323 int program = player->m_pendingProgramChange;
Chris@0 324 player->m_pendingProgramChange = -1;
Chris@0 325
Chris@0 326 if (!player->m_sampleSearchComplete) {
Chris@0 327 player->searchSamples();
Chris@0 328 }
Chris@0 329
Chris@0 330 if (program < int(player->m_samples.size())) {
Chris@0 331 QString path = player->m_samples[program].second;
Chris@0 332 QString programName = player->m_samples[program].first;
Chris@0 333 if (programName != player->m_program) {
Chris@0 334 player->m_program = programName;
Chris@0 335 player->m_mutex.unlock();
Chris@0 336 player->loadSampleData(path);
Chris@0 337 } else {
Chris@0 338 player->m_mutex.unlock();
Chris@0 339 }
Chris@0 340 }
Chris@0 341 }
Chris@0 342
Chris@0 343 if (!player->m_sampleSearchComplete) {
Chris@0 344
Chris@0 345 QMutexLocker locker(&player->m_mutex);
Chris@0 346
Chris@0 347 if (!player->m_sampleSearchComplete) {
Chris@0 348 player->searchSamples();
Chris@0 349 }
Chris@0 350 }
Chris@0 351 }
Chris@0 352
Chris@0 353 void
Chris@0 354 SamplePlayer::searchSamples()
Chris@0 355 {
Chris@0 356 if (m_sampleSearchComplete) return;
Chris@0 357
Chris@81 358 m_samples.clear();
Chris@81 359
Chris@83 360 std::cerr << "SamplePlayer::searchSamples: Directory is \""
Chris@83 361 << m_sampleDir.toLocal8Bit().data() << "\"" << std::endl;
Chris@0 362
Chris@83 363 QDir dir(m_sampleDir, "*.wav");
Chris@83 364
Chris@83 365 for (unsigned int i = 0; i < dir.count(); ++i) {
Chris@83 366 QFileInfo file(dir.filePath(dir[i]));
Chris@83 367 if (file.isReadable()) {
Chris@83 368 m_samples.push_back(std::pair<QString, QString>
Chris@83 369 (file.baseName(), file.filePath()));
Chris@117 370 // std::cerr << "Found: " << dir[i].toLocal8Bit().data() << std::endl;
Chris@75 371 }
Chris@0 372 }
Chris@83 373
Chris@0 374 m_sampleSearchComplete = true;
Chris@0 375 }
Chris@0 376
Chris@0 377 void
Chris@0 378 SamplePlayer::loadSampleData(QString path)
Chris@0 379 {
Chris@0 380 SF_INFO info;
Chris@0 381 SNDFILE *file;
Chris@0 382 size_t samples = 0;
Chris@0 383 float *tmpFrames, *tmpSamples, *tmpResamples, *tmpOld;
Chris@0 384 size_t i;
Chris@0 385
Chris@0 386 info.format = 0;
Chris@0 387 file = sf_open(path.toLocal8Bit().data(), SFM_READ, &info);
Chris@0 388 if (!file) {
Chris@0 389 std::cerr << "SamplePlayer::loadSampleData: Failed to open file "
Chris@0 390 << path.toLocal8Bit().data() << ": "
Chris@0 391 << sf_strerror(file) << std::endl;
Chris@0 392 return;
Chris@0 393 }
Chris@0 394
Chris@0 395 samples = info.frames;
Chris@0 396 tmpFrames = (float *)malloc(info.frames * info.channels * sizeof(float));
Chris@0 397 if (!tmpFrames) return;
Chris@0 398
Chris@0 399 sf_readf_float(file, tmpFrames, info.frames);
Chris@0 400 sf_close(file);
Chris@0 401
Chris@0 402 tmpResamples = 0;
Chris@0 403
Chris@0 404 if (info.samplerate != m_sampleRate) {
Chris@0 405
Chris@0 406 double ratio = (double)m_sampleRate / (double)info.samplerate;
Chris@0 407 size_t target = (size_t)(info.frames * ratio);
Chris@0 408 SRC_DATA data;
Chris@0 409
Chris@0 410 tmpResamples = (float *)malloc(target * info.channels * sizeof(float));
Chris@0 411 if (!tmpResamples) {
Chris@0 412 free(tmpFrames);
Chris@0 413 return;
Chris@0 414 }
Chris@0 415
Chris@0 416 memset(tmpResamples, 0, target * info.channels * sizeof(float));
Chris@0 417
Chris@0 418 data.data_in = tmpFrames;
Chris@0 419 data.data_out = tmpResamples;
Chris@0 420 data.input_frames = info.frames;
Chris@0 421 data.output_frames = target;
Chris@0 422 data.src_ratio = ratio;
Chris@0 423
Chris@0 424 if (!src_simple(&data, SRC_SINC_BEST_QUALITY, info.channels)) {
Chris@0 425 free(tmpFrames);
Chris@0 426 tmpFrames = tmpResamples;
Chris@0 427 samples = target;
Chris@0 428 } else {
Chris@0 429 free(tmpResamples);
Chris@0 430 }
Chris@0 431 }
Chris@0 432
Chris@0 433 /* add an extra sample for linear interpolation */
Chris@0 434 tmpSamples = (float *)malloc((samples + 1) * sizeof(float));
Chris@0 435 if (!tmpSamples) {
Chris@0 436 free(tmpFrames);
Chris@0 437 return;
Chris@0 438 }
Chris@0 439
Chris@0 440 for (i = 0; i < samples; ++i) {
Chris@0 441 int j;
Chris@0 442 tmpSamples[i] = 0.0f;
Chris@0 443 for (j = 0; j < info.channels; ++j) {
Chris@0 444 tmpSamples[i] += tmpFrames[i * info.channels + j];
Chris@0 445 }
Chris@0 446 }
Chris@0 447
Chris@0 448 free(tmpFrames);
Chris@0 449
Chris@0 450 /* add an extra sample for linear interpolation */
Chris@0 451 tmpSamples[samples] = 0.0f;
Chris@0 452
Chris@0 453 QMutexLocker locker(&m_mutex);
Chris@0 454
Chris@0 455 tmpOld = m_sampleData;
Chris@0 456 m_sampleData = tmpSamples;
Chris@0 457 m_sampleCount = samples;
Chris@0 458
Chris@0 459 for (i = 0; i < Polyphony; ++i) {
Chris@0 460 m_ons[i] = -1;
Chris@0 461 m_offs[i] = -1;
Chris@0 462 m_velocities[i] = 0;
Chris@0 463 }
Chris@0 464
Chris@0 465 if (tmpOld) free(tmpOld);
Chris@0 466
Chris@0 467 printf("%s: loaded %s (%ld samples from original %ld channels resampled from %ld frames at %ld Hz)\n", "sampler", path.toLocal8Bit().data(), (long)samples, (long)info.channels, (long)info.frames, (long)info.samplerate);
Chris@0 468 }
Chris@0 469
Chris@0 470 void
Chris@0 471 SamplePlayer::runImpl(unsigned long sampleCount,
Chris@0 472 snd_seq_event_t *events,
Chris@0 473 unsigned long eventCount)
Chris@0 474 {
Chris@0 475 unsigned long pos;
Chris@0 476 unsigned long count;
Chris@0 477 unsigned long event_pos;
Chris@0 478 int i;
Chris@0 479
Chris@0 480 memset(m_output, 0, sampleCount * sizeof(float));
Chris@0 481
Chris@0 482 if (!m_mutex.tryLock()) return;
Chris@0 483
Chris@0 484 if (!m_sampleData || !m_sampleCount) {
Chris@0 485 m_sampleNo += sampleCount;
Chris@0 486 m_mutex.unlock();
Chris@0 487 return;
Chris@0 488 }
Chris@0 489
Chris@0 490 for (pos = 0, event_pos = 0; pos < sampleCount; ) {
Chris@0 491
Chris@0 492 while (event_pos < eventCount
Chris@0 493 && pos >= events[event_pos].time.tick) {
Chris@0 494
Chris@0 495 if (events[event_pos].type == SND_SEQ_EVENT_NOTEON) {
Chris@0 496 snd_seq_ev_note_t n = events[event_pos].data.note;
Chris@0 497 if (n.velocity > 0) {
Chris@0 498 m_ons[n.note] =
Chris@0 499 m_sampleNo + events[event_pos].time.tick;
Chris@0 500 m_offs[n.note] = -1;
Chris@0 501 m_velocities[n.note] = n.velocity;
Chris@0 502 } else {
Chris@0 503 if (!m_sustain || (*m_sustain < 0.001)) {
Chris@0 504 m_offs[n.note] =
Chris@0 505 m_sampleNo + events[event_pos].time.tick;
Chris@0 506 }
Chris@0 507 }
Chris@0 508 } else if (events[event_pos].type == SND_SEQ_EVENT_NOTEOFF &&
Chris@0 509 (!m_sustain || (*m_sustain < 0.001))) {
Chris@0 510 snd_seq_ev_note_t n = events[event_pos].data.note;
Chris@0 511 m_offs[n.note] =
Chris@0 512 m_sampleNo + events[event_pos].time.tick;
Chris@0 513 }
Chris@0 514
Chris@0 515 ++event_pos;
Chris@0 516 }
Chris@0 517
Chris@0 518 count = sampleCount - pos;
Chris@0 519 if (event_pos < eventCount &&
Chris@0 520 events[event_pos].time.tick < sampleCount) {
Chris@0 521 count = events[event_pos].time.tick - pos;
Chris@0 522 }
Chris@0 523
Chris@0 524 for (i = 0; i < Polyphony; ++i) {
Chris@0 525 if (m_ons[i] >= 0) {
Chris@0 526 addSample(i, pos, count);
Chris@0 527 }
Chris@0 528 }
Chris@0 529
Chris@0 530 pos += count;
Chris@0 531 }
Chris@0 532
Chris@0 533 m_sampleNo += sampleCount;
Chris@0 534 m_mutex.unlock();
Chris@0 535 }
Chris@0 536
Chris@0 537 void
Chris@0 538 SamplePlayer::addSample(int n, unsigned long pos, unsigned long count)
Chris@0 539 {
Chris@143 540 float ratio = 1.f;
Chris@143 541 float gain = 1.f;
Chris@0 542 unsigned long i, s;
Chris@0 543
Chris@0 544 if (m_retune && *m_retune) {
Chris@143 545 if (m_concertA) {
Chris@143 546 ratio *= *m_concertA / 440.f;
Chris@143 547 }
Chris@0 548 if (m_basePitch && n != *m_basePitch) {
Chris@143 549 ratio *= powf(1.059463094f, n - *m_basePitch);
Chris@0 550 }
Chris@0 551 }
Chris@0 552
Chris@0 553 if (long(pos + m_sampleNo) < m_ons[n]) return;
Chris@0 554
Chris@0 555 gain = (float)m_velocities[n] / 127.0f;
Chris@0 556
Chris@0 557 for (i = 0, s = pos + m_sampleNo - m_ons[n];
Chris@0 558 i < count;
Chris@0 559 ++i, ++s) {
Chris@0 560
Chris@0 561 float lgain = gain;
Chris@0 562 float rs = s * ratio;
Chris@0 563 unsigned long rsi = lrintf(floor(rs));
Chris@0 564
Chris@0 565 if (rsi >= m_sampleCount) {
Chris@0 566 m_ons[n] = -1;
Chris@0 567 break;
Chris@0 568 }
Chris@0 569
Chris@0 570 if (m_offs[n] >= 0 &&
Chris@0 571 long(pos + i + m_sampleNo) > m_offs[n]) {
Chris@0 572
Chris@0 573 unsigned long dist =
Chris@0 574 pos + i + m_sampleNo - m_offs[n];
Chris@0 575
Chris@0 576 unsigned long releaseFrames = 200;
Chris@0 577 if (m_release) {
Chris@0 578 releaseFrames = long(*m_release * m_sampleRate + 0.0001);
Chris@0 579 }
Chris@0 580
Chris@0 581 if (dist > releaseFrames) {
Chris@0 582 m_ons[n] = -1;
Chris@0 583 break;
Chris@0 584 } else {
Chris@0 585 lgain = lgain * (float)(releaseFrames - dist) /
Chris@0 586 (float)releaseFrames;
Chris@0 587 }
Chris@0 588 }
Chris@0 589
Chris@0 590 float sample = m_sampleData[rsi] +
Chris@0 591 ((m_sampleData[rsi + 1] -
Chris@0 592 m_sampleData[rsi]) *
Chris@0 593 (rs - (float)rsi));
Chris@0 594
Chris@0 595 m_output[pos + i] += lgain * sample;
Chris@0 596 }
Chris@0 597 }