plugins/reverb/reverb.C

   1 #include "clip.h"
   2 #include "confirmsave.h"
   3 #include "bchash.h"
   4 #include "errorbox.h"
   5 #include "filexml.h"
   6 #include "language.h"
   7 #include "picon_png.h"
   8 #include "reverb.h"
   9 #include "reverbwindow.h"
  10
  11 #include "vframe.h"
  12
  13 #include <math.h>
  14 #include <string.h>
  15 #include <time.h>
  16 #include <unistd.h>
  17
  18
  19
  20 PluginClient* new_plugin(PluginServer *server)
  21 {
  22         return new Reverb(server);
  23 }
  24
  25
  26
  27 Reverb::Reverb(PluginServer *server)
  28  : PluginAClient(server)
  29 {
  30         srand(time(0));
  31         redo_buffers = 1;       // set to redo buffers before the first render
  32         dsp_in_length = 0;
  33         ref_channels = 0;
  34         ref_offsets = 0;
  35         ref_levels = 0;
  36         ref_lowpass = 0;
  37         dsp_in = 0;
  38         lowpass_in1 = 0;
  39         lowpass_in2 = 0;
  40         initialized = 0;
  41         PLUGIN_CONSTRUCTOR_MACRO
  42 }
  43
  44 Reverb::~Reverb()
  45 {
  46         PLUGIN_DESTRUCTOR_MACRO
  47
  48         if(initialized)
  49         {
  50                 for(int i = 0; i < total_in_buffers; i++)
  51                 {
  52                         delete [] dsp_in[i];
  53                         delete [] ref_channels[i];
  54                         delete [] ref_offsets[i];
  55                         delete [] ref_levels[i];
  56                         delete [] ref_lowpass[i];
  57                         delete [] lowpass_in1[i];
  58                         delete [] lowpass_in2[i];
  59                 }
  60
  61                 delete [] dsp_in;
  62                 delete [] ref_channels;
  63                 delete [] ref_offsets;
  64                 delete [] ref_levels;
  65                 delete [] ref_lowpass;
  66                 delete [] lowpass_in1;
  67                 delete [] lowpass_in2;
  68
  69                 for(int i = 0; i < (smp + 1); i++)
  70                 {
  71                         delete engine[i];
  72                 }
  73                 delete [] engine;
  74                 initialized = 0;
  75         }
  76 }
  77
  78 char* Reverb::plugin_title() { return N_("Heroine College Concert Hall"); }
  79 int Reverb::is_realtime() { return 1; }
  80 int Reverb::is_multichannel() { return 1; }
  81 int Reverb::is_synthesis() { return 1; }
  82
  83 int Reverb::process_realtime(int64_t size,
  84         double **input_ptr,
  85         double **output_ptr)
  86 {
  87         int64_t new_dsp_length, i, j;
  88         main_in = input_ptr;
  89         main_out = output_ptr;
  90 //printf("Reverb::process_realtime 1\n");
  91         redo_buffers |= load_configuration();
  92
  93 //printf("Reverb::process_realtime 1\n");
  94         if(!config.ref_total) return 0;
  95
  96
  97         if(!initialized)
  98         {
  99                 dsp_in = new double*[total_in_buffers];
 100                 ref_channels = new int64_t*[total_in_buffers];
 101                 ref_offsets = new int64_t*[total_in_buffers];
 102                 ref_levels = new double*[total_in_buffers];
 103                 ref_lowpass = new int64_t*[total_in_buffers];
 104                 lowpass_in1 = new double*[total_in_buffers];
 105                 lowpass_in2 = new double*[total_in_buffers];
 106
 107                 for(i = 0; i < total_in_buffers; i++)
 108                 {
 109                         dsp_in[i] = new double[1];
 110                         ref_channels[i] = new int64_t[1];
 111                         ref_offsets[i] = new int64_t[1];
 112                         ref_levels[i] = new double[1];
 113                         ref_lowpass[i] = new int64_t[1];
 114                         lowpass_in1[i] = new double[1];
 115                         lowpass_in2[i] = new double[1];
 116                 }
 117
 118                 engine = new ReverbEngine*[(smp + 1)];
 119                 for(i = 0; i < (smp + 1); i++)
 120                 {
 121                         engine[i] = new ReverbEngine(this);
 122 //printf("Reverb::start_realtime %d\n", Thread::calculate_realtime());
 123 // Realtime priority moved to sound driver
 124 //              engine[i]->set_realtime(realtime_priority);
 125                         engine[i]->start();
 126                 }
 127                 initialized = 1;
 128                 redo_buffers = 1;
 129         }
 130
 131         new_dsp_length = size +
 132                 (config.delay_init + config.ref_length) * project_sample_rate / 1000 + 1;
 133 //printf("Reverb::process_realtime 1 %d %d\n", in_buffer_size, size);
 134
 135         if(redo_buffers || new_dsp_length != dsp_in_length)
 136         {
 137                 for(i = 0; i < total_in_buffers; i++)
 138                 {
 139                         double *old_dsp = dsp_in[i];
 140                         double *new_dsp = new double[new_dsp_length];
 141                         for(j = 0; j < dsp_in_length && j < new_dsp_length; j++)
 142                                 new_dsp[j] = old_dsp[j];
 143                         for( ; j < new_dsp_length; j++) new_dsp[j] = 0;
 144                         delete [] old_dsp;
 145                         dsp_in[i] = new_dsp;
 146                 }
 147
 148                 dsp_in_length = new_dsp_length;
 149                 redo_buffers = 1;
 150         }
 151 //printf("Reverb::process_realtime 1\n");
 152
 153         if(redo_buffers)
 154         {
 155                 for(i = 0; i < total_in_buffers; i++)
 156                 {
 157                         delete [] ref_channels[i];
 158                         delete [] ref_offsets[i];
 159                         delete [] ref_lowpass[i];
 160                         delete [] ref_levels[i];
 161                         delete [] lowpass_in1[i];
 162                         delete [] lowpass_in2[i];
 163
 164                         ref_channels[i] = new int64_t[config.ref_total + 1];
 165                         ref_offsets[i] = new int64_t[config.ref_total + 1];
 166                         ref_lowpass[i] = new int64_t[config.ref_total + 1];
 167                         ref_levels[i] = new double[config.ref_total + 1];
 168                         lowpass_in1[i] = new double[config.ref_total + 1];
 169                         lowpass_in2[i] = new double[config.ref_total + 1];
 170
 171 // set channels
 172                         ref_channels[i][0] = i;         // primary noise
 173                         ref_channels[i][1] = i;         // first reflection
 174 // set offsets
 175                         ref_offsets[i][0] = 0;
 176                         ref_offsets[i][1] = config.delay_init * project_sample_rate / 1000;
 177 // set levels
 178                         ref_levels[i][0] = db.fromdb(config.level_init);
 179                         ref_levels[i][1] = db.fromdb(config.ref_level1);
 180 // set lowpass
 181                         ref_lowpass[i][0] = -1;     // ignore first noise
 182                         ref_lowpass[i][1] = config.lowpass1;
 183                         lowpass_in1[i][0] = 0;
 184                         lowpass_in2[i][0] = 0;
 185                         lowpass_in1[i][1] = 0;
 186                         lowpass_in2[i][1] = 0;
 187
 188                         int64_t ref_division = config.ref_length * project_sample_rate / 1000 / (config.ref_total + 1);
 189                         for(j = 2; j < config.ref_total + 1; j++)
 190                         {
 191 // set random channels for remaining reflections
 192                                 ref_channels[i][j] = rand() % total_in_buffers;
 193
 194 // set random offsets after first reflection
 195                                 ref_offsets[i][j] = ref_offsets[i][1];
 196                                 ref_offsets[i][j] += ref_division * j - (rand() % ref_division) / 2;
 197
 198 // set changing levels
 199                                 ref_levels[i][j] = db.fromdb(config.ref_level1 + (config.ref_level2 - config.ref_level1) / (config.ref_total - 1) * (j - 2));
 200                                 //ref_levels[i][j] /= 100;
 201
 202 // set changing lowpass as linear
 203                                 ref_lowpass[i][j] = (int64_t)(config.lowpass1 + (double)(config.lowpass2 - config.lowpass1) / (config.ref_total - 1) * (j - 2));
 204                                 lowpass_in1[i][j] = 0;
 205                                 lowpass_in2[i][j] = 0;
 206                         }
 207                 }
 208
 209                 redo_buffers = 0;
 210         }
 211 //printf("Reverb::process_realtime 1\n");
 212
 213         for(i = 0; i < total_in_buffers; )
 214         {
 215                 for(j = 0; j < (smp + 1) && (i + j) < total_in_buffers; j++)
 216                 {
 217                         engine[j]->process_overlays(i + j, size);
 218                 }
 219
 220                 for(j = 0; j < (smp + 1) && i < total_in_buffers; j++, i++)
 221                 {
 222                         engine[j]->wait_process_overlays();
 223                 }
 224         }
 225 //printf("Reverb::process_realtime 2 %d %d\n", total_in_buffers, size);
 226
 227         for(i = 0; i < total_in_buffers; i++)
 228         {
 229                 double *current_out = main_out[i];
 230                 double *current_in = dsp_in[i];
 231
 232                 for(j = 0; j < size; j++) current_out[j] = current_in[j];
 233
 234                 int64_t k;
 235                 for(k = 0; j < dsp_in_length; j++, k++) current_in[k] = current_in[j];
 236
 237                 for(; k < dsp_in_length; k++) current_in[k] = 0;
 238         }
 239 //printf("Reverb::process_realtime 2 %d %d\n", total_in_buffers, size);
 240         return 0;
 241 }
 242
 243 NEW_PICON_MACRO(Reverb)
 244
 245 SHOW_GUI_MACRO(Reverb, ReverbThread)
 246
 247 SET_STRING_MACRO(Reverb)
 248
 249 RAISE_WINDOW_MACRO(Reverb)
 250
 251 int Reverb::load_defaults()
 252 {
 253         char directory[1024];
 254
 255 // set the default directory
 256         sprintf(directory, "%sreverb.rc", get_defaultdir());
 257
 258 // load the defaults
 259
 260         defaults = new BC_Hash(directory);
 261
 262         defaults->load();
 263
 264         config.level_init = defaults->get("LEVEL_INIT", (double)0);
 265         config.delay_init = defaults->get("DELAY_INIT", 100);
 266         config.ref_level1 = defaults->get("REF_LEVEL1", (double)-6);
 267         config.ref_level2 = defaults->get("REF_LEVEL2", (double)INFINITYGAIN);
 268         config.ref_total = defaults->get("REF_TOTAL", 12);
 269         config.ref_length = defaults->get("REF_LENGTH", 1000);
 270         config.lowpass1 = defaults->get("LOWPASS1", 20000);
 271         config.lowpass2 = defaults->get("LOWPASS2", 20000);
 272
 273         sprintf(config_directory, "~");
 274         defaults->get("CONFIG_DIRECTORY", config_directory);
 275
 276 //printf("Reverb::load_defaults config.ref_level2 %f\n", config.ref_level2);
 277         return 0;
 278 }
 279
 280 int Reverb::save_defaults()
 281 {
 282         defaults->update("LEVEL_INIT", config.level_init);
 283         defaults->update("DELAY_INIT", config.delay_init);
 284         defaults->update("REF_LEVEL1", config.ref_level1);
 285         defaults->update("REF_LEVEL2", config.ref_level2);
 286         defaults->update("REF_TOTAL", config.ref_total);
 287         defaults->update("REF_LENGTH", config.ref_length);
 288         defaults->update("LOWPASS1", config.lowpass1);
 289         defaults->update("LOWPASS2", config.lowpass2);
 290         defaults->update("CONFIG_DIRECTORY", config_directory);
 291         defaults->save();
 292         return 0;
 293 }
 294
 295 LOAD_CONFIGURATION_MACRO(Reverb, ReverbConfig)
 296
 297
 298 void Reverb::save_data(KeyFrame *keyframe)
 299 {
 300 //printf("Reverb::save_data 1\n");
 301         FileXML output;
 302 //printf("Reverb::save_data 1\n");
 303
 304 // cause xml file to store data directly in text
 305         output.set_shared_string(keyframe->data, MESSAGESIZE);
 306 //printf("Reverb::save_data 1\n");
 307
 308         output.tag.set_title("REVERB");
 309         output.tag.set_property("LEVELINIT", config.level_init);
 310         output.tag.set_property("DELAY_INIT", config.delay_init);
 311         output.tag.set_property("REF_LEVEL1", config.ref_level1);
 312         output.tag.set_property("REF_LEVEL2", config.ref_level2);
 313         output.tag.set_property("REF_TOTAL", config.ref_total);
 314 //printf("Reverb::save_data 1\n");
 315         output.tag.set_property("REF_LENGTH", config.ref_length);
 316         output.tag.set_property("LOWPASS1", config.lowpass1);
 317         output.tag.set_property("LOWPASS2", config.lowpass2);
 318 //printf("Reverb::save_data config.ref_level2 %f\n", config.ref_level2);
 319         output.append_tag();
 320         output.append_newline();
 321 //printf("Reverb::save_data 1\n");
 322
 323
 324
 325         output.terminate_string();
 326 //printf("Reverb::save_data 2\n");
 327 }
 328
 329 void Reverb::read_data(KeyFrame *keyframe)
 330 {
 331         FileXML input;
 332 // cause xml file to read directly from text
 333         input.set_shared_string(keyframe->data, strlen(keyframe->data));
 334         int result = 0;
 335
 336         result = input.read_tag();
 337
 338         if(!result)
 339         {
 340                 if(input.tag.title_is("REVERB"))
 341                 {
 342                         config.level_init = input.tag.get_property("LEVELINIT", config.level_init);
 343                         config.delay_init = input.tag.get_property("DELAY_INIT", config.delay_init);
 344                         config.ref_level1 = input.tag.get_property("REF_LEVEL1", config.ref_level1);
 345                         config.ref_level2 = input.tag.get_property("REF_LEVEL2", config.ref_level2);
 346                         config.ref_total = input.tag.get_property("REF_TOTAL", config.ref_total);
 347                         config.ref_length = input.tag.get_property("REF_LENGTH", config.ref_length);
 348                         config.lowpass1 = input.tag.get_property("LOWPASS1", config.lowpass1);
 349                         config.lowpass2 = input.tag.get_property("LOWPASS2", config.lowpass2);
 350                 }
 351         }
 352 }
 353
 354 void Reverb::update_gui()
 355 {
 356         if(thread)
 357         {
 358                 thread->window->lock_window();
 359                 thread->window->level_init->update(config.level_init);
 360                 thread->window->delay_init->update(config.delay_init);
 361                 thread->window->ref_level1->update(config.ref_level1);
 362                 thread->window->ref_level2->update(config.ref_level2);
 363                 thread->window->ref_total->update(config.ref_total);
 364                 thread->window->ref_length->update(config.ref_length);
 365                 thread->window->lowpass1->update(config.lowpass1);
 366                 thread->window->lowpass2->update(config.lowpass2);
 367                 thread->window->unlock_window();
 368         }
 369 }
 370
 371
 372
 373
 374 int Reverb::load_from_file(char *path)
 375 {
 376         FILE *in;
 377         int result = 0;
 378         int length;
 379         char string[1024];
 380
 381         if(in = fopen(path, "rb"))
 382         {
 383                 fseek(in, 0, SEEK_END);
 384                 length = ftell(in);
 385                 fseek(in, 0, SEEK_SET);
 386                 fread(string, length, 1, in);
 387                 fclose(in);
 388 //              read_data(string);
 389         }
 390         else
 391         {
 392                 perror("fopen:");
 393 // failed
 394                 ErrorBox errorbox("");
 395                 char string[1024];
 396                 sprintf(string, _("Couldn't open %s."), path);
 397                 errorbox.create_objects(string);
 398                 errorbox.run_window();
 399                 result = 1;
 400         }
 401
 402         return result;
 403 }
 404
 405 int Reverb::save_to_file(char *path)
 406 {
 407         FILE *out;
 408         int result = 0;
 409         char string[1024];
 410
 411         {
 412 //              ConfirmSave confirm;
 413 //              result = confirm.test_file("", path);
 414         }
 415
 416         if(!result)
 417         {
 418                 if(out = fopen(path, "wb"))
 419                 {
 420 //                      save_data(string);
 421                         fwrite(string, strlen(string), 1, out);
 422                         fclose(out);
 423                 }
 424                 else
 425                 {
 426                         result = 1;
 427 // failed
 428                         ErrorBox errorbox("");
 429                         char string[1024];
 430                         sprintf(string, _("Couldn't save %s."), path);
 431                         errorbox.create_objects(string);
 432                         errorbox.run_window();
 433                         result = 1;
 434                 }
 435         }
 436
 437         return result;
 438 }
 439
 440 ReverbEngine::ReverbEngine(Reverb *plugin)
 441  : Thread()
 442 {
 443         this->plugin = plugin;
 444         completed = 0;
 445         input_lock.lock();
 446         output_lock.lock();
 447 }
 448
 449 ReverbEngine::~ReverbEngine()
 450 {
 451         completed = 1;
 452         input_lock.unlock();
 453         join();
 454 }
 455
 456 int ReverbEngine::process_overlays(int output_buffer, int64_t size)
 457 {
 458         this->output_buffer = output_buffer;
 459         this->size = size;
 460         input_lock.unlock();
 461 }
 462
 463 int ReverbEngine::wait_process_overlays()
 464 {
 465         output_lock.lock();
 466 }
 467
 468 int ReverbEngine::process_overlay(double *in, double *out, double &out1, double &out2, double level, int64_t lowpass, int64_t samplerate, int64_t size)
 469 {
 470 // Modern niquist frequency is 44khz but pot limit is 20khz so can't use
 471 // niquist
 472         if(lowpass == -1 || lowpass >= 20000)
 473         {
 474 // no lowpass filter
 475                 for(int i = 0; i < size; i++) out[i] += in[i] * level;
 476         }
 477         else
 478         {
 479                 double coef = 0.25 * 2.0 * M_PI * (double)lowpass / (double)plugin->project_sample_rate;
 480                 double a = coef * 0.25;
 481                 double b = coef * 0.50;
 482
 483                 for(int i = 0; i < size; i++)
 484                 {
 485                         out2 += a * (3 * out1 + in[i] - out2);
 486                         out2 += b * (out1 + in[i] - out2);
 487                         out2 += a * (out1 + 3 * in[i] - out2);
 488                         out2 += coef * (in[i] - out2);
 489                         out1 = in[i];
 490                         out[i] += out2 * level;
 491                 }
 492         }
 493 }
 494
 495 void ReverbEngine::run()
 496 {
 497         int j, i;
 498 //printf("ReverbEngine::run 1 %d\n", calculate_realtime());
 499         while(1)
 500         {
 501                 input_lock.lock();
 502                 if(completed) return;
 503
 504 // Process reverb
 505                 for(i = 0; i < plugin->total_in_buffers; i++)
 506                 {
 507                         for(j = 0; j < plugin->config.ref_total + 1; j++)
 508                         {
 509                                 if(plugin->ref_channels[i][j] == output_buffer)
 510                                         process_overlay(plugin->main_in[i],
 511                                                                 &(plugin->dsp_in[plugin->ref_channels[i][j]][plugin->ref_offsets[i][j]]),
 512                                                                 plugin->lowpass_in1[i][j],
 513                                                                 plugin->lowpass_in2[i][j],
 514                                                                 plugin->ref_levels[i][j],
 515                                                                 plugin->ref_lowpass[i][j],
 516                                                                 plugin->project_sample_rate,
 517                                                                 size);
 518                         }
 519                 }
 520
 521                 output_lock.unlock();
 522         }
 523 }
 524
 525
 526
 527
 528
 529
 530
 531 ReverbConfig::ReverbConfig()
 532 {
 533 }
 534
 535 int ReverbConfig::equivalent(ReverbConfig &that)
 536 {
 537         return (EQUIV(level_init, that.level_init) &&
 538                 delay_init == that.delay_init &&
 539                 EQUIV(ref_level1, that.ref_level1) &&
 540                 EQUIV(ref_level2, that.ref_level2) &&
 541                 ref_total == that.ref_total &&
 542                 ref_length == that.ref_length &&
 543                 lowpass1 == that.lowpass1 &&
 544                 lowpass2 == that.lowpass2);
 545 }
 546
 547 void ReverbConfig::copy_from(ReverbConfig &that)
 548 {
 549         level_init = that.level_init;
 550         delay_init = that.delay_init;
 551         ref_level1 = that.ref_level1;
 552         ref_level2 = that.ref_level2;
 553         ref_total = that.ref_total;
 554         ref_length = that.ref_length;
 555         lowpass1 = that.lowpass1;
 556         lowpass2 = that.lowpass2;
 557 }
 558
 559 void ReverbConfig::interpolate(ReverbConfig &prev,
 560         ReverbConfig &next,
 561         int64_t prev_frame,
 562         int64_t next_frame,
 563         int64_t current_frame)
 564 {
 565         level_init = prev.level_init;
 566         delay_init = prev.delay_init;
 567         ref_level1 = prev.ref_level1;
 568         ref_level2 = prev.ref_level2;
 569         ref_total = prev.ref_total;
 570         ref_length = prev.ref_length;
 571         lowpass1 = prev.lowpass1;
 572         lowpass2 = prev.lowpass2;
 573 }
 574
 575 void ReverbConfig::dump()
 576 {
 577         printf("ReverbConfig::dump %f %d %f %f %d %d %d %d\n",
 578         level_init,
 579         delay_init,
 580         ref_level1,
 581         ref_level2,
 582         ref_total,
 583         ref_length,
 584         lowpass1,
 585         lowpass2);
 586 }
 587
 588