cinelerra-5.1/plugins/compressor/compressor.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   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
  22 #include "bcdisplayinfo.h"
  23 #include "bcsignals.h"
  24 #include "clip.h"
  25 #include "compressor.h"
  26 #include "cursors.h"
  27 #include "bchash.h"
  28 #include "filexml.h"
  29 #include "language.h"
  30 #include "samples.h"
  31 #include "theme.h"
  32 #include "units.h"
  33 #include "vframe.h"
  34
  35 #include <math.h>
  36 #include <string.h>
  37
  38
  39
  40
  41
  42 REGISTER_PLUGIN(CompressorEffect)
  43
  44
  45
  46
  47
  48
  49 // More potential compressor algorithms:
  50 // Use single reaction time parameter.  Negative reaction time uses
  51 // readahead.  Positive reaction time uses slope.
  52
  53 // Smooth input stage if readahead.
  54 // Determine slope from current smoothed sample to every sample in readahead area.
  55 // Once highest slope is found, count of number of samples remaining until it is
  56 // reached.  Only search after this count for the next highest slope.
  57 // Use highest slope to determine smoothed value.
  58
  59 // Smooth input stage if not readahead.
  60 // For every sample, calculate slope needed to reach current sample from
  61 // current smoothed value in the reaction time.  If higher than current slope,
  62 // make it the current slope and count number of samples remaining until it is
  63 // reached.  If this count is met and no higher slopes are found, base slope
  64 // on current sample when count is met.
  65
  66 // Gain stage.
  67 // For every sample, calculate gain from smoothed input value.
  68
  69
  70
  71
  72
  73 CompressorEffect::CompressorEffect(PluginServer *server)
  74  : PluginAClient(server)
  75 {
  76         reset();
  77
  78 }
  79
  80 CompressorEffect::~CompressorEffect()
  81 {
  82
  83         delete_dsp();
  84         levels.remove_all();
  85 }
  86
  87 void CompressorEffect::delete_dsp()
  88 {
  89         if(input_buffer)
  90         {
  91                 for(int i = 0; i < PluginClient::total_in_buffers; i++)
  92                         delete input_buffer[i];
  93                 delete [] input_buffer;
  94         }
  95
  96
  97         input_buffer = 0;
  98         input_size = 0;
  99         input_allocated = 0;
 100 }
 101
 102
 103 void CompressorEffect::reset()
 104 {
 105         input_buffer = 0;
 106         input_size = 0;
 107         input_allocated = 0;
 108         input_start = 0;
 109
 110         next_target = 1.0;
 111         previous_target = 1.0;
 112         target_samples = 1;
 113         target_current_sample = -1;
 114         current_value = 1.0;
 115 }
 116
 117 const char* CompressorEffect::plugin_title() { return N_("Compressor"); }
 118 int CompressorEffect::is_realtime() { return 1; }
 119 int CompressorEffect::is_multichannel() { return 1; }
 120
 121
 122
 123 void CompressorEffect::read_data(KeyFrame *keyframe)
 124 {
 125         FileXML input;
 126         input.set_shared_input(keyframe->xbuf);
 127
 128         int result = 0;
 129         config.levels.remove_all();
 130         while(!result)
 131         {
 132                 result = input.read_tag();
 133
 134                 if(!result)
 135                 {
 136                         if(input.tag.title_is("COMPRESSOR"))
 137                         {
 138                                 config.reaction_len = input.tag.get_property("REACTION_LEN", config.reaction_len);
 139                                 config.decay_len = input.tag.get_property("DECAY_LEN", config.decay_len);
 140                                 config.trigger = input.tag.get_property("TRIGGER", config.trigger);
 141                                 config.smoothing_only = input.tag.get_property("SMOOTHING_ONLY", config.smoothing_only);
 142                                 config.input = input.tag.get_property("INPUT", config.input);
 143                         }
 144                         else
 145                         if(input.tag.title_is("LEVEL"))
 146                         {
 147                                 double x = input.tag.get_property("X", (double)0);
 148                                 double y = input.tag.get_property("Y", (double)0);
 149                                 compressor_point_t point = { x, y };
 150
 151                                 config.levels.append(point);
 152                         }
 153                 }
 154         }
 155 }
 156
 157 void CompressorEffect::save_data(KeyFrame *keyframe)
 158 {
 159         FileXML output;
 160         output.set_shared_output(keyframe->xbuf);
 161
 162         output.tag.set_title("COMPRESSOR");
 163         output.tag.set_property("TRIGGER", config.trigger);
 164         output.tag.set_property("REACTION_LEN", config.reaction_len);
 165         output.tag.set_property("DECAY_LEN", config.decay_len);
 166         output.tag.set_property("SMOOTHING_ONLY", config.smoothing_only);
 167         output.tag.set_property("INPUT", config.input);
 168         output.append_tag();
 169         output.tag.set_title("/COMPRESSOR");
 170         output.append_tag();
 171         output.append_newline();
 172
 173
 174         for(int i = 0; i < config.levels.total; i++)
 175         {
 176                 output.tag.set_title("LEVEL");
 177                 output.tag.set_property("X", config.levels.values[i].x);
 178                 output.tag.set_property("Y", config.levels.values[i].y);
 179
 180                 output.append_tag();
 181                 output.tag.set_title("/LEVEL");
 182                 output.append_tag();
 183                 output.append_newline();
 184         }
 185
 186         output.terminate_string();
 187 }
 188
 189
 190 void CompressorEffect::update_gui()
 191 {
 192         if( !thread ) return;
 193         CompressorWindow *window = (CompressorWindow*)thread->window;
 194 // load_configuration,read_data deletes levels
 195         window->lock_window("CompressorEffect::update_gui");
 196         if( load_configuration() )
 197                 window->update();
 198         window->unlock_window();
 199 }
 200
 201
 202 LOAD_CONFIGURATION_MACRO(CompressorEffect, CompressorConfig)
 203 NEW_WINDOW_MACRO(CompressorEffect, CompressorWindow)
 204
 205
 206
 207
 208 int CompressorEffect::process_buffer(int64_t size,
 209                 Samples **buffer,
 210                 int64_t start_position,
 211                 int sample_rate)
 212 {
 213         load_configuration();
 214
 215 // Calculate linear transfer from db
 216         levels.remove_all();
 217         for(int i = 0; i < config.levels.total; i++)
 218         {
 219                 levels.append();
 220                 levels.values[i].x = DB::fromdb(config.levels.values[i].x);
 221                 levels.values[i].y = DB::fromdb(config.levels.values[i].y);
 222         }
 223         min_x = DB::fromdb(config.min_db);
 224         min_y = DB::fromdb(config.min_db);
 225         max_x = 1.0;
 226         max_y = 1.0;
 227
 228
 229         int reaction_samples = (int)(config.reaction_len * sample_rate + 0.5);
 230         int decay_samples = (int)(config.decay_len * sample_rate + 0.5);
 231         int trigger = CLIP(config.trigger, 0, PluginAClient::total_in_buffers - 1);
 232
 233         CLAMP(reaction_samples, -1000000, 1000000);
 234         CLAMP(decay_samples, reaction_samples, 1000000);
 235         CLAMP(decay_samples, 1, 1000000);
 236         if(labs(reaction_samples) < 1) reaction_samples = 1;
 237         if(labs(decay_samples) < 1) decay_samples = 1;
 238
 239         int total_buffers = get_total_buffers();
 240         if(reaction_samples >= 0)
 241         {
 242                 if(target_current_sample < 0) target_current_sample = reaction_samples;
 243                 for(int i = 0; i < total_buffers; i++)
 244                 {
 245                         read_samples(buffer[i],
 246                                 i,
 247                                 sample_rate,
 248                                 start_position,
 249                                 size);
 250                 }
 251
 252                 double current_slope = (next_target - previous_target) /
 253                         reaction_samples;
 254                 double *trigger_buffer = buffer[trigger]->get_data();
 255                 for(int i = 0; i < size; i++)
 256                 {
 257 // Get slope required to reach current sample from smoothed sample over reaction
 258 // length.
 259                         double sample = 0.;
 260                         switch(config.input)
 261                         {
 262                                 case CompressorConfig::MAX:
 263                                 {
 264                                         double max = 0;
 265                                         for(int j = 0; j < total_buffers; j++)
 266                                         {
 267                                                 sample = fabs(buffer[j]->get_data()[i]);
 268                                                 if(sample > max) max = sample;
 269                                         }
 270                                         sample = max;
 271                                         break;
 272                                 }
 273
 274                                 case CompressorConfig::TRIGGER:
 275                                         sample = fabs(trigger_buffer[i]);
 276                                         break;
 277
 278                                 case CompressorConfig::SUM:
 279                                 {
 280                                         double max = 0;
 281                                         for(int j = 0; j < total_buffers; j++)
 282                                         {
 283                                                 sample = fabs(buffer[j]->get_data()[i]);
 284                                                 max += sample;
 285                                         }
 286                                         sample = max;
 287                                         break;
 288                                 }
 289                         }
 290
 291                         double new_slope = (sample - current_value) /
 292                                 reaction_samples;
 293
 294 // Slope greater than current slope
 295                         if(new_slope >= current_slope &&
 296                                 (current_slope >= 0 ||
 297                                 new_slope >= 0))
 298                         {
 299                                 next_target = sample;
 300                                 previous_target = current_value;
 301                                 target_current_sample = 0;
 302                                 target_samples = reaction_samples;
 303                                 current_slope = new_slope;
 304                         }
 305                         else
 306                         if(sample > next_target && current_slope < 0)
 307                         {
 308                                 next_target = sample;
 309                                 previous_target = current_value;
 310                                 target_current_sample = 0;
 311                                 target_samples = decay_samples;
 312                                 current_slope = (sample - current_value) / decay_samples;
 313                         }
 314 // Current smoothed sample came up without finding higher slope
 315                         if(target_current_sample >= target_samples)
 316                         {
 317                                 next_target = sample;
 318                                 previous_target = current_value;
 319                                 target_current_sample = 0;
 320                                 target_samples = decay_samples;
 321                                 current_slope = (sample - current_value) / decay_samples;
 322                         }
 323
 324 // Update current value and store gain
 325                         current_value = (next_target * target_current_sample +
 326                                 previous_target * (target_samples - target_current_sample)) /
 327                                 target_samples;
 328
 329                         target_current_sample++;
 330
 331                         if(config.smoothing_only)
 332                         {
 333                                 for(int j = 0; j < total_buffers; j++)
 334                                         buffer[j]->get_data()[i] = current_value;
 335                         }
 336                         else
 337                         {
 338                                 double gain = calculate_gain(current_value);
 339                                 for(int j = 0; j < total_buffers; j++)
 340                                 {
 341                                         buffer[j]->get_data()[i] *= gain;
 342                                 }
 343                         }
 344                 }
 345         }
 346         else
 347         {
 348                 if(target_current_sample < 0) target_current_sample = target_samples;
 349                 int64_t preview_samples = -reaction_samples;
 350
 351 // Start of new buffer is outside the current buffer.  Start buffer over.
 352                 if(start_position < input_start ||
 353                         start_position >= input_start + input_size)
 354                 {
 355                         input_size = 0;
 356                         input_start = start_position;
 357                 }
 358                 else
 359 // Shift current buffer so the buffer starts on start_position
 360                 if(start_position > input_start &&
 361                         start_position < input_start + input_size)
 362                 {
 363                         if(input_buffer)
 364                         {
 365                                 int len = input_start + input_size - start_position;
 366                                 for(int i = 0; i < total_buffers; i++)
 367                                 {
 368                                         memcpy(input_buffer[i]->get_data(),
 369                                                 input_buffer[i]->get_data() + (start_position - input_start),
 370                                                 len * sizeof(double));
 371                                 }
 372                                 input_size = len;
 373                                 input_start = start_position;
 374                         }
 375                 }
 376
 377 // Expand buffer to handle preview size
 378                 if(size + preview_samples > input_allocated)
 379                 {
 380                         Samples **new_input_buffer = new Samples*[total_buffers];
 381                         for(int i = 0; i < total_buffers; i++)
 382                         {
 383                                 new_input_buffer[i] = new Samples(size + preview_samples);
 384                                 if(input_buffer)
 385                                 {
 386                                         memcpy(new_input_buffer[i]->get_data(),
 387                                                 input_buffer[i]->get_data(),
 388                                                 input_size * sizeof(double));
 389                                         delete input_buffer[i];
 390                                 }
 391                         }
 392                         if(input_buffer) delete [] input_buffer;
 393
 394                         input_allocated = size + preview_samples;
 395                         input_buffer = new_input_buffer;
 396                 }
 397
 398 // Append data to input buffer to construct readahead area.
 399 #define MAX_FRAGMENT_SIZE 131072
 400                 while(input_size < size + preview_samples)
 401                 {
 402                         int fragment_size = MAX_FRAGMENT_SIZE;
 403                         if(fragment_size + input_size > size + preview_samples)
 404                                 fragment_size = size + preview_samples - input_size;
 405                         for(int i = 0; i < total_buffers; i++)
 406                         {
 407                                 input_buffer[i]->set_offset(input_size);
 408 //printf("CompressorEffect::process_buffer %d %p %d\n", __LINE__, input_buffer[i], input_size);
 409                                 read_samples(input_buffer[i],
 410                                         i,
 411                                         sample_rate,
 412                                         input_start + input_size,
 413                                         fragment_size);
 414                                 input_buffer[i]->set_offset(0);
 415                         }
 416                         input_size += fragment_size;
 417                 }
 418
 419
 420                 double current_slope = (next_target - previous_target) /
 421                         target_samples;
 422                 double *trigger_buffer = input_buffer[trigger]->get_data();
 423                 for(int i = 0; i < size; i++)
 424                 {
 425 // Get slope from current sample to every sample in preview_samples.
 426 // Take highest one or first one after target_samples are up.
 427
 428 // For optimization, calculate the first slope we really need.
 429 // Assume every slope up to the end of preview_samples has been calculated and
 430 // found <= to current slope.
 431             int first_slope = preview_samples - 1;
 432 // Need new slope immediately
 433                         if(target_current_sample >= target_samples)
 434                                 first_slope = 1;
 435                         for(int j = first_slope;
 436                                 j < preview_samples;
 437                                 j++)
 438                         {
 439                                 double sample = 0.;
 440                                 switch(config.input)
 441                                 {
 442                                         case CompressorConfig::MAX:
 443                                         {
 444                                                 double max = 0;
 445                                                 for(int k = 0; k < total_buffers; k++)
 446                                                 {
 447                                                         sample = fabs(input_buffer[k]->get_data()[i + j]);
 448                                                         if(sample > max) max = sample;
 449                                                 }
 450                                                 sample = max;
 451                                                 break;
 452                                         }
 453
 454                                         case CompressorConfig::TRIGGER:
 455                                                 sample = fabs(trigger_buffer[i + j]);
 456                                                 break;
 457
 458                                         case CompressorConfig::SUM:
 459                                         {
 460                                                 double max = 0;
 461                                                 for(int k = 0; k < total_buffers; k++)
 462                                                 {
 463                                                         sample = fabs(input_buffer[k]->get_data()[i + j]);
 464                                                         max += sample;
 465                                                 }
 466                                                 sample = max;
 467                                                 break;
 468                                         }
 469                                 }
 470
 471
 472
 473
 474
 475
 476                                 double new_slope = (sample - current_value) /
 477                                         j;
 478 // Got equal or higher slope
 479                                 if(new_slope >= current_slope &&
 480                                         (current_slope >= 0 ||
 481                                         new_slope >= 0))
 482                                 {
 483                                         target_current_sample = 0;
 484                                         target_samples = j;
 485                                         current_slope = new_slope;
 486                                         next_target = sample;
 487                                         previous_target = current_value;
 488                                 }
 489                                 else
 490                                 if(sample > next_target && current_slope < 0)
 491                                 {
 492                                         target_current_sample = 0;
 493                                         target_samples = decay_samples;
 494                                         current_slope = (sample - current_value) /
 495                                                 decay_samples;
 496                                         next_target = sample;
 497                                         previous_target = current_value;
 498                                 }
 499
 500 // Hit end of current slope range without finding higher slope
 501                                 if(target_current_sample >= target_samples)
 502                                 {
 503                                         target_current_sample = 0;
 504                                         target_samples = decay_samples;
 505                                         current_slope = (sample - current_value) / decay_samples;
 506                                         next_target = sample;
 507                                         previous_target = current_value;
 508                                 }
 509                         }
 510
 511 // Update current value and multiply gain
 512                         current_value = (next_target * target_current_sample +
 513                                 previous_target * (target_samples - target_current_sample)) /
 514                                 target_samples;
 515 //buffer[0][i] = current_value;
 516                         target_current_sample++;
 517
 518                         if(config.smoothing_only)
 519                         {
 520                                 for(int j = 0; j < total_buffers; j++)
 521                                 {
 522                                         buffer[j]->get_data()[i] = current_value;
 523                                 }
 524                         }
 525                         else
 526                         {
 527                                 double gain = calculate_gain(current_value);
 528                                 for(int j = 0; j < total_buffers; j++)
 529                                 {
 530                                         buffer[j]->get_data()[i] = input_buffer[j]->get_data()[i] * gain;
 531                                 }
 532                         }
 533                 }
 534
 535
 536
 537         }
 538
 539
 540
 541
 542
 543         return 0;
 544 }
 545
 546 double CompressorEffect::calculate_output(double x)
 547 {
 548         if(x > 0.999) return 1.0;
 549
 550         for(int i = levels.total - 1; i >= 0; i--)
 551         {
 552                 if(levels.values[i].x <= x)
 553                 {
 554                         if(i < levels.total - 1)
 555                         {
 556                                 return levels.values[i].y +
 557                                         (x - levels.values[i].x) *
 558                                         (levels.values[i + 1].y - levels.values[i].y) /
 559                                         (levels.values[i + 1].x - levels.values[i].x);
 560                         }
 561                         else
 562                         {
 563                                 return levels.values[i].y +
 564                                         (x - levels.values[i].x) *
 565                                         (max_y - levels.values[i].y) /
 566                                         (max_x - levels.values[i].x);
 567                         }
 568                 }
 569         }
 570
 571         if(levels.total)
 572         {
 573                 return min_y +
 574                         (x - min_x) *
 575                         (levels.values[0].y - min_y) /
 576                         (levels.values[0].x - min_x);
 577         }
 578         else
 579                 return x;
 580 }
 581
 582
 583 double CompressorEffect::calculate_gain(double input)
 584 {
 585 //      double x_db = DB::todb(input);
 586 //      double y_db = config.calculate_db(x_db);
 587 //      double y_linear = DB::fromdb(y_db);
 588         double y_linear = calculate_output(input);
 589         double gain;
 590         if(input != 0)
 591                 gain = y_linear / input;
 592         else
 593                 gain = 100000;
 594         return gain;
 595 }
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606 CompressorConfig::CompressorConfig()
 607 {
 608         reaction_len = 1.0;
 609         min_db = -80.0;
 610         min_x = min_db;
 611         min_y = min_db;
 612         max_x = 0;
 613         max_y = 0;
 614         trigger = 0;
 615         input = CompressorConfig::TRIGGER;
 616         smoothing_only = 0;
 617         decay_len = 1.0;
 618 }
 619
 620 void CompressorConfig::copy_from(CompressorConfig &that)
 621 {
 622         this->reaction_len = that.reaction_len;
 623         this->decay_len = that.decay_len;
 624         this->min_db = that.min_db;
 625         this->min_x = that.min_x;
 626         this->min_y = that.min_y;
 627         this->max_x = that.max_x;
 628         this->max_y = that.max_y;
 629         this->trigger = that.trigger;
 630         this->input = that.input;
 631         this->smoothing_only = that.smoothing_only;
 632         levels.remove_all();
 633         for(int i = 0; i < that.levels.total; i++)
 634                 this->levels.append(that.levels.values[i]);
 635 }
 636
 637 int CompressorConfig::equivalent(CompressorConfig &that)
 638 {
 639         if(!EQUIV(this->reaction_len, that.reaction_len) ||
 640                 !EQUIV(this->decay_len, that.decay_len) ||
 641                 this->trigger != that.trigger ||
 642                 this->input != that.input ||
 643                 this->smoothing_only != that.smoothing_only)
 644                 return 0;
 645         if(this->levels.total != that.levels.total) return 0;
 646         for(int i = 0;
 647                 i < this->levels.total && i < that.levels.total;
 648                 i++)
 649         {
 650                 compressor_point_t *this_level = &this->levels.values[i];
 651                 compressor_point_t *that_level = &that.levels.values[i];
 652                 if(!EQUIV(this_level->x, that_level->x) ||
 653                         !EQUIV(this_level->y, that_level->y))
 654                         return 0;
 655         }
 656         return 1;
 657 }
 658
 659 void CompressorConfig::interpolate(CompressorConfig &prev,
 660         CompressorConfig &next,
 661         int64_t prev_frame,
 662         int64_t next_frame,
 663         int64_t current_frame)
 664 {
 665         copy_from(prev);
 666 }
 667
 668 int CompressorConfig::total_points()
 669 {
 670         if(!levels.total)
 671                 return 1;
 672         else
 673                 return levels.total;
 674 }
 675
 676 void CompressorConfig::dump()
 677 {
 678         printf("CompressorConfig::dump\n");
 679         for(int i = 0; i < levels.total; i++)
 680         {
 681                 printf("        %f %f\n", levels.values[i].x, levels.values[i].y);
 682         }
 683 }
 684
 685
 686 double CompressorConfig::get_y(int number)
 687 {
 688         if(!levels.total)
 689                 return 1.0;
 690         else
 691         if(number >= levels.total)
 692                 return levels.values[levels.total - 1].y;
 693         else
 694                 return levels.values[number].y;
 695 }
 696
 697 double CompressorConfig::get_x(int number)
 698 {
 699         if(!levels.total)
 700                 return 0.0;
 701         else
 702         if(number >= levels.total)
 703                 return levels.values[levels.total - 1].x;
 704         else
 705                 return levels.values[number].x;
 706 }
 707
 708 double CompressorConfig::calculate_db(double x)
 709 {
 710         if(x > -0.001) return 0.0;
 711
 712         for(int i = levels.total - 1; i >= 0; i--)
 713         {
 714                 if(levels.values[i].x <= x)
 715                 {
 716                         if(i < levels.total - 1)
 717                         {
 718                                 return levels.values[i].y +
 719                                         (x - levels.values[i].x) *
 720                                         (levels.values[i + 1].y - levels.values[i].y) /
 721                                         (levels.values[i + 1].x - levels.values[i].x);
 722                         }
 723                         else
 724                         {
 725                                 return levels.values[i].y +
 726                                         (x - levels.values[i].x) *
 727                                         (max_y - levels.values[i].y) /
 728                                         (max_x - levels.values[i].x);
 729                         }
 730                 }
 731         }
 732
 733         if(levels.total)
 734         {
 735                 return min_y +
 736                         (x - min_x) *
 737                         (levels.values[0].y - min_y) /
 738                         (levels.values[0].x - min_x);
 739         }
 740         else
 741                 return x;
 742 }
 743
 744
 745 int CompressorConfig::set_point(double x, double y)
 746 {
 747         for(int i = levels.total - 1; i >= 0; i--)
 748         {
 749                 if(levels.values[i].x < x)
 750                 {
 751                         levels.append();
 752                         i++;
 753                         for(int j = levels.total - 2; j >= i; j--)
 754                         {
 755                                 levels.values[j + 1] = levels.values[j];
 756                         }
 757                         levels.values[i].x = x;
 758                         levels.values[i].y = y;
 759
 760                         return i;
 761                 }
 762         }
 763
 764         levels.append();
 765         for(int j = levels.total - 2; j >= 0; j--)
 766         {
 767                 levels.values[j + 1] = levels.values[j];
 768         }
 769         levels.values[0].x = x;
 770         levels.values[0].y = y;
 771         return 0;
 772 }
 773
 774 void CompressorConfig::remove_point(int number)
 775 {
 776         for(int j = number; j < levels.total - 1; j++)
 777         {
 778                 levels.values[j] = levels.values[j + 1];
 779         }
 780         levels.remove();
 781 }
 782
 783 void CompressorConfig::optimize()
 784 {
 785         int done = 0;
 786
 787         while(!done)
 788         {
 789                 done = 1;
 790
 791
 792                 for(int i = 0; i < levels.total - 1; i++)
 793                 {
 794                         if(levels.values[i].x >= levels.values[i + 1].x)
 795                         {
 796                                 done = 0;
 797                                 for(int j = i + 1; j < levels.total - 1; j++)
 798                                 {
 799                                         levels.values[j] = levels.values[j + 1];
 800                                 }
 801                                 levels.remove();
 802                         }
 803                 }
 804
 805         }
 806 }
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834 CompressorWindow::CompressorWindow(CompressorEffect *plugin)
 835  : PluginClientWindow(plugin,
 836         650,
 837         480,
 838         650,
 839         480,
 840         0)
 841 {
 842         this->plugin = plugin;
 843 }
 844
 845 void CompressorWindow::create_objects()
 846 {
 847         int x = 35, y = 10;
 848         int control_margin = 130;
 849
 850         add_subwindow(canvas = new CompressorCanvas(plugin,
 851                 x,
 852                 y,
 853                 get_w() - x - control_margin - 10,
 854                 get_h() - y - 70));
 855         canvas->set_cursor(CROSS_CURSOR, 0, 0);
 856         x = get_w() - control_margin;
 857         add_subwindow(new BC_Title(x, y, _("Reaction secs:")));
 858         y += 20;
 859         add_subwindow(reaction = new CompressorReaction(plugin, x, y));
 860         y += 30;
 861         add_subwindow(new BC_Title(x, y, _("Decay secs:")));
 862         y += 20;
 863         add_subwindow(decay = new CompressorDecay(plugin, x, y));
 864         y += 30;
 865         add_subwindow(new BC_Title(x, y, _("Trigger Type:")));
 866         y += 20;
 867         add_subwindow(input = new CompressorInput(plugin, x, y));
 868         input->create_objects();
 869         y += 30;
 870         add_subwindow(new BC_Title(x, y, _("Trigger:")));
 871         y += 20;
 872         add_subwindow(trigger = new CompressorTrigger(plugin, x, y));
 873         if(plugin->config.input != CompressorConfig::TRIGGER) trigger->disable();
 874         y += 30;
 875         add_subwindow(smooth = new CompressorSmooth(plugin, x, y));
 876         y += 60;
 877         add_subwindow(clear = new CompressorClear(plugin, x, y));
 878         x = 10;
 879         y = get_h() - 40;
 880         add_subwindow(new BC_Title(x, y, _("Point:")));
 881         x += 50;
 882         add_subwindow(x_text = new CompressorX(plugin, x, y));
 883         x += 110;
 884         add_subwindow(new BC_Title(x, y, _("x")));
 885         x += 20;
 886         add_subwindow(y_text = new CompressorY(plugin, x, y));
 887         draw_scales();
 888
 889         update_canvas();
 890         show_window();
 891 }
 892
 893 void CompressorWindow::draw_scales()
 894 {
 895         draw_3d_border(canvas->get_x() - 2,
 896                 canvas->get_y() - 2,
 897                 canvas->get_w() + 4,
 898                 canvas->get_h() + 4,
 899                 get_bg_color(),
 900                 BLACK,
 901                 MDGREY,
 902                 get_bg_color());
 903
 904
 905         set_font(SMALLFONT);
 906         set_color(get_resources()->default_text_color);
 907
 908 #define DIVISIONS 8
 909         for(int i = 0; i <= DIVISIONS; i++)
 910         {
 911                 int y = canvas->get_y() + 10 + canvas->get_h() / DIVISIONS * i;
 912                 int x = canvas->get_x() - 30;
 913                 char string[BCTEXTLEN];
 914
 915                 sprintf(string, "%.0f", (float)i / DIVISIONS * plugin->config.min_db);
 916                 draw_text(x, y, string);
 917
 918                 int y1 = canvas->get_y() + canvas->get_h() / DIVISIONS * i;
 919                 int y2 = canvas->get_y() + canvas->get_h() / DIVISIONS * (i + 1);
 920                 for(int j = 0; j < 10; j++)
 921                 {
 922                         y = y1 + (y2 - y1) * j / 10;
 923                         if(j == 0)
 924                         {
 925                                 draw_line(canvas->get_x() - 10, y, canvas->get_x(), y);
 926                         }
 927                         else
 928                         if(i < DIVISIONS)
 929                         {
 930                                 draw_line(canvas->get_x() - 5, y, canvas->get_x(), y);
 931                         }
 932                 }
 933         }
 934
 935
 936         for(int i = 0; i <= DIVISIONS; i++)
 937         {
 938                 int y = canvas->get_h() + 30;
 939                 int x = canvas->get_x() + (canvas->get_w() - 10) / DIVISIONS * i;
 940                 char string[BCTEXTLEN];
 941
 942                 sprintf(string, "%.0f", (1.0 - (float)i / DIVISIONS) * plugin->config.min_db);
 943                 draw_text(x, y, string);
 944
 945                 int x1 = canvas->get_x() + canvas->get_w() / DIVISIONS * i;
 946                 int x2 = canvas->get_x() + canvas->get_w() / DIVISIONS * (i + 1);
 947                 for(int j = 0; j < 10; j++)
 948                 {
 949                         x = x1 + (x2 - x1) * j / 10;
 950                         if(j == 0)
 951                         {
 952                                 draw_line(x, canvas->get_y() + canvas->get_h(), x, canvas->get_y() + canvas->get_h() + 10);
 953                         }
 954                         else
 955                         if(i < DIVISIONS)
 956                         {
 957                                 draw_line(x, canvas->get_y() + canvas->get_h(), x, canvas->get_y() + canvas->get_h() + 5);
 958                         }
 959                 }
 960         }
 961
 962
 963
 964         flash();
 965 }
 966
 967 void CompressorWindow::update()
 968 {
 969         update_textboxes();
 970         update_canvas();
 971 }
 972
 973 void CompressorWindow::update_textboxes()
 974 {
 975         if(atol(trigger->get_text()) != plugin->config.trigger)
 976                 trigger->update((int64_t)plugin->config.trigger);
 977         if(strcmp(input->get_text(), CompressorInput::value_to_text(plugin->config.input)))
 978                 input->set_text(CompressorInput::value_to_text(plugin->config.input));
 979
 980         if(plugin->config.input != CompressorConfig::TRIGGER && trigger->get_enabled())
 981                 trigger->disable();
 982         else
 983         if(plugin->config.input == CompressorConfig::TRIGGER && !trigger->get_enabled())
 984                 trigger->enable();
 985
 986         if(!EQUIV(atof(reaction->get_text()), plugin->config.reaction_len))
 987                 reaction->update((float)plugin->config.reaction_len);
 988         if(!EQUIV(atof(decay->get_text()), plugin->config.decay_len))
 989                 decay->update((float)plugin->config.decay_len);
 990         smooth->update(plugin->config.smoothing_only);
 991         if(canvas->current_operation == CompressorCanvas::DRAG)
 992         {
 993                 x_text->update((float)plugin->config.levels.values[canvas->current_point].x);
 994                 y_text->update((float)plugin->config.levels.values[canvas->current_point].y);
 995         }
 996 }
 997
 998 #define POINT_W 10
 999 void CompressorWindow::update_canvas()
1000 {
1001         canvas->clear_box(0, 0, canvas->get_w(), canvas->get_h());
1002         canvas->set_line_dashes(1);
1003         canvas->set_color(GREEN);
1004
1005         for(int i = 1; i < DIVISIONS; i++)
1006         {
1007                 int y = canvas->get_h() * i / DIVISIONS;
1008                 canvas->draw_line(0, y, canvas->get_w(), y);
1009
1010                 int x = canvas->get_w() * i / DIVISIONS;
1011                 canvas->draw_line(x, 0, x, canvas->get_h());
1012         }
1013         canvas->set_line_dashes(0);
1014
1015
1016         canvas->set_font(MEDIUMFONT);
1017         canvas->draw_text(plugin->get_theme()->widget_border,
1018                 canvas->get_h() / 2,
1019                 _("Output"));
1020         canvas->draw_text(canvas->get_w() / 2 - canvas->get_text_width(MEDIUMFONT, _("Input")) / 2,
1021                 canvas->get_h() - plugin->get_theme()->widget_border,
1022                 _("Input"));
1023
1024
1025         canvas->set_color(WHITE);
1026         canvas->set_line_width(2);
1027
1028         double x_db = plugin->config.min_db;
1029         double y_db = plugin->config.calculate_db(x_db);
1030         int y1 = (int)(y_db / plugin->config.min_db * canvas->get_h());
1031
1032         for(int i=1; i<canvas->get_w(); i++)
1033         {
1034                 x_db = (1. - (double)i / canvas->get_w()) * plugin->config.min_db;
1035                 y_db = plugin->config.calculate_db(x_db);
1036                 int y2 = (int)(y_db / plugin->config.min_db * canvas->get_h());
1037                 canvas->draw_line(i-1, y1, i, y2);
1038                 y1 = y2;
1039         }
1040         canvas->set_line_width(1);
1041
1042         int total = plugin->config.levels.total ? plugin->config.levels.total : 1;
1043         for(int i=0; i < total; i++)
1044         {
1045                 x_db = plugin->config.get_x(i);
1046                 y_db = plugin->config.get_y(i);
1047
1048                 int x = (int)((1. - x_db / plugin->config.min_db) * canvas->get_w());
1049                 int y = (int)(y_db / plugin->config.min_db * canvas->get_h());
1050
1051                 canvas->draw_box(x - POINT_W / 2, y - POINT_W / 2, POINT_W, POINT_W);
1052         }
1053
1054         canvas->flash();
1055 }
1056
1057 int CompressorWindow::resize_event(int w, int h)
1058 {
1059         return 1;
1060 }
1061
1062
1063
1064
1065
1066
1067
1068
1069 CompressorCanvas::CompressorCanvas(CompressorEffect *plugin, int x, int y, int w, int h)
1070  : BC_SubWindow(x, y, w, h, BLACK)
1071 {
1072         this->plugin = plugin;
1073         current_operation = NONE;
1074         current_point = 0;
1075 }
1076
1077 int CompressorCanvas::button_press_event()
1078 {
1079 // Check existing points
1080         if(is_event_win() && cursor_inside())
1081         {
1082                 for(int i = 0; i < plugin->config.levels.total; i++)
1083                 {
1084                         double x_db = plugin->config.get_x(i);
1085                         double y_db = plugin->config.get_y(i);
1086
1087                         int x = (int)(((double)1 - x_db / plugin->config.min_db) * get_w());
1088                         int y = (int)(y_db / plugin->config.min_db * get_h());
1089
1090                         if(get_cursor_x() < x + POINT_W / 2 && get_cursor_x() >= x - POINT_W / 2 &&
1091                                 get_cursor_y() < y + POINT_W / 2 && get_cursor_y() >= y - POINT_W / 2)
1092                         {
1093                                 current_operation = DRAG;
1094                                 current_point = i;
1095                                 return 1;
1096                         }
1097                 }
1098
1099
1100
1101 // Create new point
1102                 double x_db = (double)(1 - (double)get_cursor_x() / get_w()) * plugin->config.min_db;
1103                 double y_db = (double)get_cursor_y() / get_h() * plugin->config.min_db;
1104
1105                 current_point = plugin->config.set_point(x_db, y_db);
1106                 current_operation = DRAG;
1107                 ((CompressorWindow*)plugin->thread->window)->update();
1108                 plugin->send_configure_change();
1109                 return 1;
1110         }
1111         return 0;
1112 //plugin->config.dump();
1113 }
1114
1115 int CompressorCanvas::button_release_event()
1116 {
1117         if(current_operation == DRAG)
1118         {
1119                 if(current_point > 0)
1120                 {
1121                         if(plugin->config.levels.values[current_point].x <
1122                                 plugin->config.levels.values[current_point - 1].x)
1123                                 plugin->config.remove_point(current_point);
1124                 }
1125
1126                 if(current_point < plugin->config.levels.total - 1)
1127                 {
1128                         if(plugin->config.levels.values[current_point].x >=
1129                                 plugin->config.levels.values[current_point + 1].x)
1130                                 plugin->config.remove_point(current_point);
1131                 }
1132
1133                 ((CompressorWindow*)plugin->thread->window)->update();
1134                 plugin->send_configure_change();
1135                 current_operation = NONE;
1136                 return 1;
1137         }
1138
1139         return 0;
1140 }
1141
1142 int CompressorCanvas::cursor_motion_event()
1143 {
1144         if(current_operation == DRAG)
1145         {
1146                 int x = get_cursor_x();
1147                 int y = get_cursor_y();
1148                 CLAMP(x, 0, get_w());
1149                 CLAMP(y, 0, get_h());
1150                 double x_db = (double)(1 - (double)x / get_w()) * plugin->config.min_db;
1151                 double y_db = (double)y / get_h() * plugin->config.min_db;
1152                 plugin->config.levels.values[current_point].x = x_db;
1153                 plugin->config.levels.values[current_point].y = y_db;
1154                 ((CompressorWindow*)plugin->thread->window)->update();
1155                 plugin->send_configure_change();
1156                 return 1;
1157 //plugin->config.dump();
1158         }
1159         else
1160 // Change cursor over points
1161         if(is_event_win() && cursor_inside())
1162         {
1163                 int new_cursor = CROSS_CURSOR;
1164
1165                 for(int i = 0; i < plugin->config.levels.total; i++)
1166                 {
1167                         double x_db = plugin->config.get_x(i);
1168                         double y_db = plugin->config.get_y(i);
1169
1170                         int x = (int)(((double)1 - x_db / plugin->config.min_db) * get_w());
1171                         int y = (int)(y_db / plugin->config.min_db * get_h());
1172
1173                         if(get_cursor_x() < x + POINT_W / 2 && get_cursor_x() >= x - POINT_W / 2 &&
1174                                 get_cursor_y() < y + POINT_W / 2 && get_cursor_y() >= y - POINT_W / 2)
1175                         {
1176                                 new_cursor = UPRIGHT_ARROW_CURSOR;
1177                                 break;
1178                         }
1179                 }
1180
1181
1182                 if(new_cursor != get_cursor())
1183                 {
1184                         set_cursor(new_cursor, 0, 1);
1185                 }
1186         }
1187         return 0;
1188 }
1189
1190
1191
1192
1193
1194 CompressorReaction::CompressorReaction(CompressorEffect *plugin, int x, int y)
1195  : BC_TextBox(x, y, 100, 1, (float)plugin->config.reaction_len)
1196 {
1197         this->plugin = plugin;
1198 }
1199
1200 int CompressorReaction::handle_event()
1201 {
1202         plugin->config.reaction_len = atof(get_text());
1203         plugin->send_configure_change();
1204         return 1;
1205 }
1206
1207 int CompressorReaction::button_press_event()
1208 {
1209         if(is_event_win())
1210         {
1211                 if(get_buttonpress() < 4) return BC_TextBox::button_press_event();
1212                 if(get_buttonpress() == 4)
1213                 {
1214                         plugin->config.reaction_len += 0.1;
1215                 }
1216                 else
1217                 if(get_buttonpress() == 5)
1218                 {
1219                         plugin->config.reaction_len -= 0.1;
1220                 }
1221                 update((float)plugin->config.reaction_len);
1222                 plugin->send_configure_change();
1223                 return 1;
1224         }
1225         return 0;
1226 }
1227
1228 CompressorDecay::CompressorDecay(CompressorEffect *plugin, int x, int y)
1229  : BC_TextBox(x, y, 100, 1, (float)plugin->config.decay_len)
1230 {
1231         this->plugin = plugin;
1232 }
1233 int CompressorDecay::handle_event()
1234 {
1235         plugin->config.decay_len = atof(get_text());
1236         plugin->send_configure_change();
1237         return 1;
1238 }
1239
1240 int CompressorDecay::button_press_event()
1241 {
1242         if(is_event_win())
1243         {
1244                 if(get_buttonpress() < 4) return BC_TextBox::button_press_event();
1245                 if(get_buttonpress() == 4)
1246                 {
1247                         plugin->config.decay_len += 0.1;
1248                 }
1249                 else
1250                 if(get_buttonpress() == 5)
1251                 {
1252                         plugin->config.decay_len -= 0.1;
1253                 }
1254                 update((float)plugin->config.decay_len);
1255                 plugin->send_configure_change();
1256                 return 1;
1257         }
1258         return 0;
1259 }
1260
1261
1262
1263 CompressorX::CompressorX(CompressorEffect *plugin, int x, int y)
1264  : BC_TextBox(x, y, 100, 1, "")
1265 {
1266         this->plugin = plugin;
1267 }
1268 int CompressorX::handle_event()
1269 {
1270         int current_point = ((CompressorWindow*)plugin->thread->window)->canvas->current_point;
1271         if(current_point < plugin->config.levels.total)
1272         {
1273                 plugin->config.levels.values[current_point].x = atof(get_text());
1274                 ((CompressorWindow*)plugin->thread->window)->update_canvas();
1275                 plugin->send_configure_change();
1276         }
1277         return 1;
1278 }
1279
1280
1281
1282 CompressorY::CompressorY(CompressorEffect *plugin, int x, int y)
1283  : BC_TextBox(x, y, 100, 1, "")
1284 {
1285         this->plugin = plugin;
1286 }
1287 int CompressorY::handle_event()
1288 {
1289         int current_point = ((CompressorWindow*)plugin->thread->window)->canvas->current_point;
1290         if(current_point < plugin->config.levels.total)
1291         {
1292                 plugin->config.levels.values[current_point].y = atof(get_text());
1293                 ((CompressorWindow*)plugin->thread->window)->update_canvas();
1294                 plugin->send_configure_change();
1295         }
1296         return 1;
1297 }
1298
1299
1300
1301
1302
1303 CompressorTrigger::CompressorTrigger(CompressorEffect *plugin, int x, int y)
1304  : BC_TextBox(x, y, (int64_t)100, (int64_t)1, (int64_t)plugin->config.trigger)
1305 {
1306         this->plugin = plugin;
1307 }
1308 int CompressorTrigger::handle_event()
1309 {
1310         plugin->config.trigger = atol(get_text());
1311         plugin->send_configure_change();
1312         return 1;
1313 }
1314
1315 int CompressorTrigger::button_press_event()
1316 {
1317         if(is_event_win())
1318         {
1319                 if(get_buttonpress() < 4) return BC_TextBox::button_press_event();
1320                 if(get_buttonpress() == 4)
1321                 {
1322                         plugin->config.trigger++;
1323                 }
1324                 else
1325                 if(get_buttonpress() == 5)
1326                 {
1327                         plugin->config.trigger--;
1328                 }
1329                 update((int64_t)plugin->config.trigger);
1330                 plugin->send_configure_change();
1331                 return 1;
1332         }
1333         return 0;
1334 }
1335
1336
1337
1338
1339
1340 CompressorInput::CompressorInput(CompressorEffect *plugin, int x, int y)
1341  : BC_PopupMenu(x,
1342         y,
1343         100,
1344         CompressorInput::value_to_text(plugin->config.input),
1345         1)
1346 {
1347         this->plugin = plugin;
1348 }
1349 int CompressorInput::handle_event()
1350 {
1351         plugin->config.input = text_to_value(get_text());
1352         ((CompressorWindow*)plugin->thread->window)->update();
1353         plugin->send_configure_change();
1354         return 1;
1355 }
1356
1357 void CompressorInput::create_objects()
1358 {
1359         for(int i = 0; i < 3; i++)
1360         {
1361                 add_item(new BC_MenuItem(value_to_text(i)));
1362         }
1363 }
1364
1365 const char* CompressorInput::value_to_text(int value)
1366 {
1367         switch(value)
1368         {
1369                 case CompressorConfig::TRIGGER: return _("Trigger");
1370                 case CompressorConfig::MAX: return _("Maximum");
1371                 case CompressorConfig::SUM: return _("Total");
1372         }
1373
1374         return _("Trigger");
1375 }
1376
1377 int CompressorInput::text_to_value(char *text)
1378 {
1379         for(int i = 0; i < 3; i++)
1380         {
1381                 if(!strcmp(value_to_text(i), text)) return i;
1382         }
1383
1384         return CompressorConfig::TRIGGER;
1385 }
1386
1387
1388
1389
1390
1391
1392 CompressorClear::CompressorClear(CompressorEffect *plugin, int x, int y)
1393  : BC_GenericButton(x, y, _("Clear"))
1394 {
1395         this->plugin = plugin;
1396 }
1397
1398 int CompressorClear::handle_event()
1399 {
1400         plugin->config.levels.remove_all();
1401 //plugin->config.dump();
1402         ((CompressorWindow*)plugin->thread->window)->update();
1403         plugin->send_configure_change();
1404         return 1;
1405 }
1406
1407
1408
1409 CompressorSmooth::CompressorSmooth(CompressorEffect *plugin, int x, int y)
1410  : BC_CheckBox(x, y, plugin->config.smoothing_only, _("Smooth only"))
1411 {
1412         this->plugin = plugin;
1413 }
1414
1415 int CompressorSmooth::handle_event()
1416 {
1417         plugin->config.smoothing_only = get_value();
1418         plugin->send_configure_change();
1419         return 1;
1420 }
1421
1422
1423
1424