annotate plugin/plugins/SamplePlayer.cpp @ 843:e802e550a1f2

Drop std:: from cout, cerr, endl -- pull these in through Debug.h
author Chris Cannam
date Tue, 26 Nov 2013 13:35:08 +0000
parents 1424aa29ae95
children a299c4cec0f8
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@573 21 #include "system/System.h"
Chris@0 22
Chris@646 23 #include "../api/dssi.h"
Chris@646 24
Chris@0 25 #include <cmath>
Chris@405 26 #include <cstdlib>
Chris@0 27
Chris@0 28 #include <QMutexLocker>
Chris@0 29 #include <QDir>
Chris@0 30 #include <QFileInfo>
Chris@0 31
Chris@0 32 #include <sndfile.h>
Chris@0 33 #include <samplerate.h>
Chris@0 34 #include <iostream>
Chris@0 35
Chris@601 36 //#define DEBUG_SAMPLE_PLAYER 1
Chris@601 37
Chris@0 38 const char *const
Chris@0 39 SamplePlayer::portNames[PortCount] =
Chris@0 40 {
Chris@0 41 "Output",
Chris@0 42 "Tuned (on/off)",
Chris@0 43 "Base Pitch (MIDI)",
Chris@143 44 "Tuning of A (Hz)",
Chris@0 45 "Sustain (on/off)",
Chris@0 46 "Release time (s)"
Chris@0 47 };
Chris@0 48
Chris@0 49 const LADSPA_PortDescriptor
Chris@0 50 SamplePlayer::ports[PortCount] =
Chris@0 51 {
Chris@0 52 LADSPA_PORT_OUTPUT | LADSPA_PORT_AUDIO,
Chris@0 53 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
Chris@0 54 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
Chris@0 55 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL,
Chris@0 56 LADSPA_PORT_INPUT | LADSPA_PORT_CONTROL
Chris@0 57 };
Chris@0 58
Chris@0 59 const LADSPA_PortRangeHint
Chris@0 60 SamplePlayer::hints[PortCount] =
Chris@0 61 {
Chris@0 62 { 0, 0, 0 },
Chris@0 63 { LADSPA_HINT_DEFAULT_MAXIMUM | LADSPA_HINT_INTEGER |
Chris@0 64 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0, 1 },
Chris@0 65 { LADSPA_HINT_DEFAULT_MIDDLE | LADSPA_HINT_INTEGER |
Chris@0 66 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0, 120 },
Chris@143 67 { LADSPA_HINT_DEFAULT_440 | LADSPA_HINT_LOGARITHMIC |
Chris@144 68 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 400, 499 },
Chris@0 69 { LADSPA_HINT_DEFAULT_MINIMUM | LADSPA_HINT_INTEGER |
Chris@0 70 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0, 1 },
Chris@0 71 { LADSPA_HINT_DEFAULT_MINIMUM | LADSPA_HINT_LOGARITHMIC |
Chris@0 72 LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE, 0.001, 2.0 }
Chris@0 73 };
Chris@0 74
Chris@0 75 const LADSPA_Properties
Chris@0 76 SamplePlayer::properties = LADSPA_PROPERTY_HARD_RT_CAPABLE;
Chris@0 77
Chris@0 78 const LADSPA_Descriptor
Chris@0 79 SamplePlayer::ladspaDescriptor =
Chris@0 80 {
Chris@0 81 0, // "Unique" ID
Chris@0 82 "sample_player", // Label
Chris@0 83 properties,
Chris@0 84 "Library Sample Player", // Name
Chris@0 85 "Chris Cannam", // Maker
Chris@0 86 "GPL", // Copyright
Chris@0 87 PortCount,
Chris@0 88 ports,
Chris@0 89 portNames,
Chris@0 90 hints,
Chris@0 91 0, // Implementation data
Chris@0 92 instantiate,
Chris@0 93 connectPort,
Chris@0 94 activate,
Chris@0 95 run,
Chris@0 96 0, // Run adding
Chris@0 97 0, // Set run adding gain
Chris@0 98 deactivate,
Chris@0 99 cleanup
Chris@0 100 };
Chris@0 101
Chris@0 102 const DSSI_Descriptor
Chris@0 103 SamplePlayer::dssiDescriptor =
Chris@0 104 {
Chris@0 105 2, // DSSI API version
Chris@0 106 &ladspaDescriptor,
Chris@75 107 configure,
Chris@0 108 getProgram,
Chris@0 109 selectProgram,
Chris@0 110 getMidiController,
Chris@0 111 runSynth,
Chris@0 112 0, // Run synth adding
Chris@0 113 0, // Run multiple synths
Chris@0 114 0, // Run multiple synths adding
Chris@0 115 receiveHostDescriptor
Chris@0 116 };
Chris@0 117
Chris@0 118 const DSSI_Host_Descriptor *
Chris@0 119 SamplePlayer::hostDescriptor = 0;
Chris@0 120
Chris@0 121
Chris@0 122 const DSSI_Descriptor *
Chris@0 123 SamplePlayer::getDescriptor(unsigned long index)
Chris@0 124 {
Chris@0 125 if (index == 0) return &dssiDescriptor;
Chris@0 126 return 0;
Chris@0 127 }
Chris@0 128
Chris@0 129 SamplePlayer::SamplePlayer(int sampleRate) :
Chris@0 130 m_output(0),
Chris@0 131 m_retune(0),
Chris@0 132 m_basePitch(0),
Chris@143 133 m_concertA(0),
Chris@0 134 m_sustain(0),
Chris@0 135 m_release(0),
Chris@0 136 m_sampleData(0),
Chris@0 137 m_sampleCount(0),
Chris@0 138 m_sampleRate(sampleRate),
Chris@0 139 m_sampleNo(0),
Chris@83 140 m_sampleDir("samples"),
Chris@0 141 m_sampleSearchComplete(false),
Chris@0 142 m_pendingProgramChange(-1)
Chris@0 143 {
Chris@0 144 }
Chris@0 145
Chris@0 146 SamplePlayer::~SamplePlayer()
Chris@0 147 {
Chris@0 148 if (m_sampleData) free(m_sampleData);
Chris@0 149 }
Chris@0 150
Chris@0 151 LADSPA_Handle
Chris@0 152 SamplePlayer::instantiate(const LADSPA_Descriptor *, unsigned long rate)
Chris@0 153 {
Chris@0 154 if (!hostDescriptor || !hostDescriptor->request_non_rt_thread) {
Chris@690 155 SVDEBUG << "SamplePlayer::instantiate: Host does not provide request_non_rt_thread, not instantiating" << endl;
Chris@0 156 return 0;
Chris@0 157 }
Chris@0 158
Chris@0 159 SamplePlayer *player = new SamplePlayer(rate);
Chris@0 160
Chris@0 161 if (hostDescriptor->request_non_rt_thread(player, workThreadCallback)) {
Chris@690 162 SVDEBUG << "SamplePlayer::instantiate: Host rejected request_non_rt_thread call, not instantiating" << endl;
Chris@0 163 delete player;
Chris@0 164 return 0;
Chris@0 165 }
Chris@0 166
Chris@0 167 return player;
Chris@0 168 }
Chris@0 169
Chris@0 170 void
Chris@0 171 SamplePlayer::connectPort(LADSPA_Handle handle,
Chris@0 172 unsigned long port, LADSPA_Data *location)
Chris@0 173 {
Chris@0 174 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 175
Chris@0 176 float **ports[PortCount] = {
Chris@0 177 &player->m_output,
Chris@0 178 &player->m_retune,
Chris@0 179 &player->m_basePitch,
Chris@143 180 &player->m_concertA,
Chris@0 181 &player->m_sustain,
Chris@0 182 &player->m_release
Chris@0 183 };
Chris@0 184
Chris@0 185 *ports[port] = (float *)location;
Chris@0 186 }
Chris@0 187
Chris@0 188 void
Chris@0 189 SamplePlayer::activate(LADSPA_Handle handle)
Chris@0 190 {
Chris@0 191 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 192 QMutexLocker locker(&player->m_mutex);
Chris@0 193
Chris@0 194 player->m_sampleNo = 0;
Chris@0 195
Chris@0 196 for (size_t i = 0; i < Polyphony; ++i) {
Chris@0 197 player->m_ons[i] = -1;
Chris@0 198 player->m_offs[i] = -1;
Chris@0 199 player->m_velocities[i] = 0;
Chris@0 200 }
Chris@0 201 }
Chris@0 202
Chris@0 203 void
Chris@0 204 SamplePlayer::run(LADSPA_Handle handle, unsigned long samples)
Chris@0 205 {
Chris@0 206 runSynth(handle, samples, 0, 0);
Chris@0 207 }
Chris@0 208
Chris@0 209 void
Chris@0 210 SamplePlayer::deactivate(LADSPA_Handle handle)
Chris@0 211 {
Chris@0 212 activate(handle); // both functions just reset the plugin
Chris@0 213 }
Chris@0 214
Chris@0 215 void
Chris@0 216 SamplePlayer::cleanup(LADSPA_Handle handle)
Chris@0 217 {
Chris@0 218 delete (SamplePlayer *)handle;
Chris@0 219 }
Chris@0 220
Chris@75 221 char *
Chris@75 222 SamplePlayer::configure(LADSPA_Handle handle, const char *key, const char *value)
Chris@75 223 {
Chris@83 224 if (key && !strcmp(key, "sampledir")) {
Chris@75 225
Chris@75 226 SamplePlayer *player = (SamplePlayer *)handle;
Chris@75 227
Chris@75 228 QMutexLocker locker(&player->m_mutex);
Chris@75 229
Chris@83 230 if (QFileInfo(value).exists() &&
Chris@83 231 QFileInfo(value).isDir()) {
Chris@81 232
Chris@83 233 player->m_sampleDir = value;
Chris@81 234
Chris@83 235 if (player->m_sampleSearchComplete) {
Chris@83 236 player->m_sampleSearchComplete = false;
Chris@83 237 player->searchSamples();
Chris@83 238 }
Chris@75 239
Chris@83 240 return 0;
Chris@83 241
Chris@83 242 } else {
Chris@197 243 char *buffer = (char *)malloc(strlen(value) + 80);
Chris@197 244 sprintf(buffer, "Sample directory \"%s\" does not exist, leaving unchanged", value);
Chris@197 245 return buffer;
Chris@75 246 }
Chris@75 247 }
Chris@75 248
Chris@75 249 return strdup("Unknown configure key");
Chris@75 250 }
Chris@75 251
Chris@0 252 const DSSI_Program_Descriptor *
Chris@0 253 SamplePlayer::getProgram(LADSPA_Handle handle, unsigned long program)
Chris@0 254 {
Chris@0 255 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 256
Chris@0 257 if (!player->m_sampleSearchComplete) {
Chris@0 258 QMutexLocker locker(&player->m_mutex);
Chris@0 259 if (!player->m_sampleSearchComplete) {
Chris@0 260 player->searchSamples();
Chris@0 261 }
Chris@0 262 }
Chris@0 263 if (program >= player->m_samples.size()) return 0;
Chris@0 264
Chris@0 265 static DSSI_Program_Descriptor descriptor;
Chris@0 266 static char name[60];
Chris@0 267
Chris@0 268 strncpy(name, player->m_samples[program].first.toLocal8Bit().data(), 60);
Chris@0 269 name[59] = '\0';
Chris@0 270
Chris@0 271 descriptor.Bank = 0;
Chris@0 272 descriptor.Program = program;
Chris@0 273 descriptor.Name = name;
Chris@0 274
Chris@0 275 return &descriptor;
Chris@0 276 }
Chris@0 277
Chris@0 278 void
Chris@0 279 SamplePlayer::selectProgram(LADSPA_Handle handle,
Chris@0 280 unsigned long,
Chris@0 281 unsigned long program)
Chris@0 282 {
Chris@0 283 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 284 player->m_pendingProgramChange = program;
Chris@0 285 }
Chris@0 286
Chris@0 287 int
Chris@0 288 SamplePlayer::getMidiController(LADSPA_Handle, unsigned long port)
Chris@0 289 {
Chris@0 290 int controllers[PortCount] = {
Chris@0 291 DSSI_NONE,
Chris@0 292 DSSI_CC(12),
Chris@0 293 DSSI_CC(13),
Chris@0 294 DSSI_CC(64),
Chris@0 295 DSSI_CC(72)
Chris@0 296 };
Chris@0 297
Chris@0 298 return controllers[port];
Chris@0 299 }
Chris@0 300
Chris@0 301 void
Chris@0 302 SamplePlayer::runSynth(LADSPA_Handle handle, unsigned long samples,
Chris@0 303 snd_seq_event_t *events, unsigned long eventCount)
Chris@0 304 {
Chris@0 305 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 306
Chris@0 307 player->runImpl(samples, events, eventCount);
Chris@0 308 }
Chris@0 309
Chris@0 310 void
Chris@0 311 SamplePlayer::receiveHostDescriptor(const DSSI_Host_Descriptor *descriptor)
Chris@0 312 {
Chris@0 313 hostDescriptor = descriptor;
Chris@0 314 }
Chris@0 315
Chris@0 316 void
Chris@0 317 SamplePlayer::workThreadCallback(LADSPA_Handle handle)
Chris@0 318 {
Chris@0 319 SamplePlayer *player = (SamplePlayer *)handle;
Chris@0 320
Chris@0 321 if (player->m_pendingProgramChange >= 0) {
Chris@0 322
Chris@601 323 #ifdef DEBUG_SAMPLE_PLAYER
Chris@690 324 SVDEBUG << "SamplePlayer::workThreadCallback: pending program change " << player->m_pendingProgramChange << endl;
Chris@601 325 #endif
Chris@0 326
Chris@0 327 player->m_mutex.lock();
Chris@0 328
Chris@0 329 int program = player->m_pendingProgramChange;
Chris@0 330 player->m_pendingProgramChange = -1;
Chris@0 331
Chris@0 332 if (!player->m_sampleSearchComplete) {
Chris@0 333 player->searchSamples();
Chris@0 334 }
Chris@0 335
Chris@0 336 if (program < int(player->m_samples.size())) {
Chris@0 337 QString path = player->m_samples[program].second;
Chris@0 338 QString programName = player->m_samples[program].first;
Chris@0 339 if (programName != player->m_program) {
Chris@0 340 player->m_program = programName;
Chris@0 341 player->m_mutex.unlock();
Chris@0 342 player->loadSampleData(path);
Chris@0 343 } else {
Chris@0 344 player->m_mutex.unlock();
Chris@0 345 }
Chris@0 346 }
Chris@0 347 }
Chris@0 348
Chris@0 349 if (!player->m_sampleSearchComplete) {
Chris@0 350
Chris@0 351 QMutexLocker locker(&player->m_mutex);
Chris@0 352
Chris@0 353 if (!player->m_sampleSearchComplete) {
Chris@0 354 player->searchSamples();
Chris@0 355 }
Chris@0 356 }
Chris@0 357 }
Chris@0 358
Chris@0 359 void
Chris@0 360 SamplePlayer::searchSamples()
Chris@0 361 {
Chris@0 362 if (m_sampleSearchComplete) return;
Chris@0 363
Chris@81 364 m_samples.clear();
Chris@81 365
Chris@601 366 #ifdef DEBUG_SAMPLE_PLAYER
Chris@690 367 SVDEBUG << "SamplePlayer::searchSamples: Directory is \""
Chris@687 368 << m_sampleDir.toLocal8Bit().data() << "\"" << endl;
Chris@601 369 #endif
Chris@0 370
Chris@83 371 QDir dir(m_sampleDir, "*.wav");
Chris@83 372
Chris@83 373 for (unsigned int i = 0; i < dir.count(); ++i) {
Chris@83 374 QFileInfo file(dir.filePath(dir[i]));
Chris@83 375 if (file.isReadable()) {
Chris@83 376 m_samples.push_back(std::pair<QString, QString>
Chris@83 377 (file.baseName(), file.filePath()));
Chris@601 378 #ifdef DEBUG_SAMPLE_PLAYER
Chris@843 379 cerr << "Found: " << dir[i].toLocal8Bit().data() << endl;
Chris@601 380 #endif
Chris@75 381 }
Chris@0 382 }
Chris@83 383
Chris@0 384 m_sampleSearchComplete = true;
Chris@0 385 }
Chris@0 386
Chris@0 387 void
Chris@0 388 SamplePlayer::loadSampleData(QString path)
Chris@0 389 {
Chris@0 390 SF_INFO info;
Chris@0 391 SNDFILE *file;
Chris@0 392 size_t samples = 0;
Chris@0 393 float *tmpFrames, *tmpSamples, *tmpResamples, *tmpOld;
Chris@0 394 size_t i;
Chris@0 395
Chris@0 396 info.format = 0;
Chris@0 397 file = sf_open(path.toLocal8Bit().data(), SFM_READ, &info);
Chris@0 398 if (!file) {
Chris@843 399 cerr << "SamplePlayer::loadSampleData: Failed to open file "
Chris@0 400 << path.toLocal8Bit().data() << ": "
Chris@843 401 << sf_strerror(file) << endl;
Chris@0 402 return;
Chris@0 403 }
Chris@0 404
Chris@0 405 samples = info.frames;
Chris@0 406 tmpFrames = (float *)malloc(info.frames * info.channels * sizeof(float));
Chris@0 407 if (!tmpFrames) return;
Chris@0 408
Chris@0 409 sf_readf_float(file, tmpFrames, info.frames);
Chris@0 410 sf_close(file);
Chris@0 411
Chris@0 412 tmpResamples = 0;
Chris@0 413
Chris@0 414 if (info.samplerate != m_sampleRate) {
Chris@0 415
Chris@0 416 double ratio = (double)m_sampleRate / (double)info.samplerate;
Chris@0 417 size_t target = (size_t)(info.frames * ratio);
Chris@0 418 SRC_DATA data;
Chris@0 419
Chris@0 420 tmpResamples = (float *)malloc(target * info.channels * sizeof(float));
Chris@0 421 if (!tmpResamples) {
Chris@0 422 free(tmpFrames);
Chris@0 423 return;
Chris@0 424 }
Chris@0 425
Chris@0 426 memset(tmpResamples, 0, target * info.channels * sizeof(float));
Chris@0 427
Chris@0 428 data.data_in = tmpFrames;
Chris@0 429 data.data_out = tmpResamples;
Chris@0 430 data.input_frames = info.frames;
Chris@0 431 data.output_frames = target;
Chris@0 432 data.src_ratio = ratio;
Chris@0 433
Chris@0 434 if (!src_simple(&data, SRC_SINC_BEST_QUALITY, info.channels)) {
Chris@0 435 free(tmpFrames);
Chris@0 436 tmpFrames = tmpResamples;
Chris@0 437 samples = target;
Chris@0 438 } else {
Chris@0 439 free(tmpResamples);
Chris@0 440 }
Chris@0 441 }
Chris@0 442
Chris@0 443 /* add an extra sample for linear interpolation */
Chris@0 444 tmpSamples = (float *)malloc((samples + 1) * sizeof(float));
Chris@0 445 if (!tmpSamples) {
Chris@0 446 free(tmpFrames);
Chris@0 447 return;
Chris@0 448 }
Chris@0 449
Chris@0 450 for (i = 0; i < samples; ++i) {
Chris@0 451 int j;
Chris@0 452 tmpSamples[i] = 0.0f;
Chris@0 453 for (j = 0; j < info.channels; ++j) {
Chris@0 454 tmpSamples[i] += tmpFrames[i * info.channels + j];
Chris@0 455 }
Chris@0 456 }
Chris@0 457
Chris@0 458 free(tmpFrames);
Chris@0 459
Chris@0 460 /* add an extra sample for linear interpolation */
Chris@0 461 tmpSamples[samples] = 0.0f;
Chris@0 462
Chris@0 463 QMutexLocker locker(&m_mutex);
Chris@0 464
Chris@0 465 tmpOld = m_sampleData;
Chris@0 466 m_sampleData = tmpSamples;
Chris@0 467 m_sampleCount = samples;
Chris@0 468
Chris@0 469 for (i = 0; i < Polyphony; ++i) {
Chris@0 470 m_ons[i] = -1;
Chris@0 471 m_offs[i] = -1;
Chris@0 472 m_velocities[i] = 0;
Chris@0 473 }
Chris@0 474
Chris@0 475 if (tmpOld) free(tmpOld);
Chris@0 476
Chris@0 477 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@0 478 }
Chris@0 479
Chris@0 480 void
Chris@0 481 SamplePlayer::runImpl(unsigned long sampleCount,
Chris@0 482 snd_seq_event_t *events,
Chris@0 483 unsigned long eventCount)
Chris@0 484 {
Chris@0 485 unsigned long pos;
Chris@0 486 unsigned long count;
Chris@0 487 unsigned long event_pos;
Chris@0 488 int i;
Chris@0 489
Chris@0 490 memset(m_output, 0, sampleCount * sizeof(float));
Chris@0 491
Chris@0 492 if (!m_mutex.tryLock()) return;
Chris@0 493
Chris@0 494 if (!m_sampleData || !m_sampleCount) {
Chris@0 495 m_sampleNo += sampleCount;
Chris@0 496 m_mutex.unlock();
Chris@0 497 return;
Chris@0 498 }
Chris@0 499
Chris@0 500 for (pos = 0, event_pos = 0; pos < sampleCount; ) {
Chris@0 501
Chris@0 502 while (event_pos < eventCount
Chris@0 503 && pos >= events[event_pos].time.tick) {
Chris@0 504
Chris@0 505 if (events[event_pos].type == SND_SEQ_EVENT_NOTEON) {
Chris@601 506 #ifdef DEBUG_SAMPLE_PLAYER
Chris@843 507 cerr << "SamplePlayer: found NOTEON at time "
Chris@843 508 << events[event_pos].time.tick << endl;
Chris@601 509 #endif
Chris@0 510 snd_seq_ev_note_t n = events[event_pos].data.note;
Chris@0 511 if (n.velocity > 0) {
Chris@0 512 m_ons[n.note] =
Chris@0 513 m_sampleNo + events[event_pos].time.tick;
Chris@0 514 m_offs[n.note] = -1;
Chris@0 515 m_velocities[n.note] = n.velocity;
Chris@0 516 } else {
Chris@0 517 if (!m_sustain || (*m_sustain < 0.001)) {
Chris@0 518 m_offs[n.note] =
Chris@0 519 m_sampleNo + events[event_pos].time.tick;
Chris@0 520 }
Chris@0 521 }
Chris@0 522 } else if (events[event_pos].type == SND_SEQ_EVENT_NOTEOFF &&
Chris@0 523 (!m_sustain || (*m_sustain < 0.001))) {
Chris@601 524 #ifdef DEBUG_SAMPLE_PLAYER
Chris@843 525 cerr << "SamplePlayer: found NOTEOFF at time "
Chris@843 526 << events[event_pos].time.tick << endl;
Chris@601 527 #endif
Chris@0 528 snd_seq_ev_note_t n = events[event_pos].data.note;
Chris@0 529 m_offs[n.note] =
Chris@0 530 m_sampleNo + events[event_pos].time.tick;
Chris@0 531 }
Chris@0 532
Chris@0 533 ++event_pos;
Chris@0 534 }
Chris@0 535
Chris@0 536 count = sampleCount - pos;
Chris@0 537 if (event_pos < eventCount &&
Chris@0 538 events[event_pos].time.tick < sampleCount) {
Chris@0 539 count = events[event_pos].time.tick - pos;
Chris@0 540 }
Chris@0 541
Chris@601 542 int notecount = 0;
Chris@601 543
Chris@0 544 for (i = 0; i < Polyphony; ++i) {
Chris@0 545 if (m_ons[i] >= 0) {
Chris@601 546 ++notecount;
Chris@0 547 addSample(i, pos, count);
Chris@0 548 }
Chris@0 549 }
Chris@0 550
Chris@601 551 #ifdef DEBUG_SAMPLE_PLAYER
Chris@843 552 cerr << "SamplePlayer: have " << notecount << " note(s) sounding currently" << endl;
Chris@601 553 #endif
Chris@601 554
Chris@0 555 pos += count;
Chris@0 556 }
Chris@0 557
Chris@0 558 m_sampleNo += sampleCount;
Chris@0 559 m_mutex.unlock();
Chris@0 560 }
Chris@0 561
Chris@0 562 void
Chris@0 563 SamplePlayer::addSample(int n, unsigned long pos, unsigned long count)
Chris@0 564 {
Chris@143 565 float ratio = 1.f;
Chris@143 566 float gain = 1.f;
Chris@0 567 unsigned long i, s;
Chris@0 568
Chris@0 569 if (m_retune && *m_retune) {
Chris@143 570 if (m_concertA) {
Chris@143 571 ratio *= *m_concertA / 440.f;
Chris@143 572 }
Chris@0 573 if (m_basePitch && n != *m_basePitch) {
Chris@143 574 ratio *= powf(1.059463094f, n - *m_basePitch);
Chris@0 575 }
Chris@0 576 }
Chris@0 577
Chris@0 578 if (long(pos + m_sampleNo) < m_ons[n]) return;
Chris@0 579
Chris@0 580 gain = (float)m_velocities[n] / 127.0f;
Chris@0 581
Chris@0 582 for (i = 0, s = pos + m_sampleNo - m_ons[n];
Chris@0 583 i < count;
Chris@0 584 ++i, ++s) {
Chris@0 585
Chris@0 586 float lgain = gain;
Chris@0 587 float rs = s * ratio;
Chris@0 588 unsigned long rsi = lrintf(floor(rs));
Chris@0 589
Chris@0 590 if (rsi >= m_sampleCount) {
Chris@601 591 #ifdef DEBUG_SAMPLE_PLAYER
Chris@843 592 cerr << "Note " << n << " has run out of samples (were " << m_sampleCount << " available at ratio " << ratio << "), ending" << endl;
Chris@601 593 #endif
Chris@0 594 m_ons[n] = -1;
Chris@0 595 break;
Chris@0 596 }
Chris@0 597
Chris@0 598 if (m_offs[n] >= 0 &&
Chris@0 599 long(pos + i + m_sampleNo) > m_offs[n]) {
Chris@0 600
Chris@0 601 unsigned long dist =
Chris@0 602 pos + i + m_sampleNo - m_offs[n];
Chris@0 603
Chris@0 604 unsigned long releaseFrames = 200;
Chris@0 605 if (m_release) {
Chris@0 606 releaseFrames = long(*m_release * m_sampleRate + 0.0001);
Chris@0 607 }
Chris@0 608
Chris@0 609 if (dist > releaseFrames) {
Chris@601 610 #ifdef DEBUG_SAMPLE_PLAYER
Chris@843 611 cerr << "Note " << n << " has expired its release time (" << releaseFrames << " frames), ending" << endl;
Chris@601 612 #endif
Chris@0 613 m_ons[n] = -1;
Chris@0 614 break;
Chris@0 615 } else {
Chris@0 616 lgain = lgain * (float)(releaseFrames - dist) /
Chris@0 617 (float)releaseFrames;
Chris@0 618 }
Chris@0 619 }
Chris@0 620
Chris@0 621 float sample = m_sampleData[rsi] +
Chris@0 622 ((m_sampleData[rsi + 1] -
Chris@0 623 m_sampleData[rsi]) *
Chris@0 624 (rs - (float)rsi));
Chris@0 625
Chris@0 626 m_output[pos + i] += lgain * sample;
Chris@0 627 }
Chris@0 628 }