cinelerra/tracksedit.C

   1 #include "assets.h"
   2 #include "atrack.h"
   3 #include "automation.h"
   4 #include "aedits.h"
   5 #include "edit.h"
   6 #include "edits.h"
   7 #include "edl.h"
   8 #include "edlsession.h"
   9 #include "filexml.h"
  10 #include "intauto.h"
  11 #include "intautos.h"
  12 #include "localsession.h"
  13 #include "mainundo.h"
  14 #include "module.h"
  15 #include "mainsession.h"
  16 #include "pluginserver.h"
  17 #include "pluginset.h"
  18 #include "timebar.h"
  19 #include "trackcanvas.h"
  20 #include "tracks.h"
  21 #include "trackscroll.h"
  22 #include "transition.h"
  23 #include "transportque.h"
  24 #include "vtrack.h"
  25 #include <string.h>
  26
  27 int Tracks::clear(double start, double end, int clear_plugins)
  28 {
  29         Track *current_track;
  30
  31         for(current_track = first;
  32                 current_track;
  33                 current_track = current_track->next)
  34         {
  35                 if(current_track->record)
  36                 {
  37                         current_track->clear(start,
  38                                 end,
  39                                 1,
  40                                 1,
  41                                 clear_plugins,
  42                                 1,
  43                                 0);
  44                 }
  45         }
  46         return 0;
  47 }
  48
  49 void Tracks::clear_automation(double selectionstart, double selectionend)
  50 {
  51         Track* current_track;
  52
  53         for(current_track = first; current_track; current_track = current_track->next)
  54         {
  55                 if(current_track->record)
  56                 {
  57                         current_track->clear_automation(selectionstart,
  58                                 selectionend,
  59                                 0,
  60                                 0);
  61                 }
  62         }
  63 }
  64
  65 void Tracks::straighten_automation(double selectionstart, double selectionend)
  66 {
  67         Track* current_track;
  68
  69         for(current_track = first; current_track; current_track = current_track->next)
  70         {
  71                 if(current_track->record)
  72                 {
  73                         current_track->straighten_automation(selectionstart,
  74                                 selectionend);
  75                 }
  76         }
  77 }
  78
  79 int Tracks::clear_default_keyframe()
  80 {
  81         for(Track *current = first; current; current = NEXT)
  82         {
  83                 if(current->record)
  84                         current->clear_automation(0, 0, 0, 1);
  85         }
  86         return 0;
  87 }
  88
  89 int Tracks::clear_handle(double start,
  90         double end,
  91         double &longest_distance,
  92         int clear_labels,
  93         int clear_plugins)
  94 {
  95         Track* current_track;
  96         double distance;
  97
  98         for(current_track = first; current_track; current_track = current_track->next)
  99         {
 100                 if(current_track->record)
 101                 {
 102                         current_track->clear_handle(start,
 103                                 end,
 104                                 clear_labels,
 105                                 clear_plugins,
 106                                 distance);
 107                         if(distance > longest_distance) longest_distance = distance;
 108                 }
 109         }
 110
 111         return 0;
 112 }
 113
 114 int Tracks::copy_automation(double selectionstart,
 115         double selectionend,
 116         FileXML *file,
 117         int default_only,
 118         int autos_only)
 119 {
 120 // called by MWindow::copy_automation for copying automation alone
 121         Track* current_track;
 122
 123         file->tag.set_title("AUTO_CLIPBOARD");
 124         file->tag.set_property("LENGTH", selectionend - selectionstart);
 125         file->tag.set_property("FRAMERATE", edl->session->frame_rate);
 126         file->tag.set_property("SAMPLERATE", edl->session->sample_rate);
 127         file->append_tag();
 128         file->append_newline();
 129         file->append_newline();
 130
 131         for(current_track = first;
 132                 current_track;
 133                 current_track = current_track->next)
 134         {
 135                 if(current_track->record)
 136                 {
 137                         current_track->copy_automation(selectionstart,
 138                                 selectionend,
 139                                 file,
 140                                 default_only,
 141                                 autos_only);
 142                 }
 143         }
 144
 145         file->tag.set_title("/AUTO_CLIPBOARD");
 146         file->append_tag();
 147         file->append_newline();
 148         file->terminate_string();
 149         return 0;
 150 }
 151
 152 int Tracks::copy_default_keyframe(FileXML *file)
 153 {
 154         copy_automation(0, 0, file, 1, 0);
 155         return 0;
 156 }
 157
 158 int Tracks::delete_tracks()
 159 {
 160         int total_deleted = 0;
 161         int done = 0;
 162
 163         while(!done)
 164         {
 165                 done = 1;
 166                 for (Track* current = first;
 167                         current && done;
 168                         current = NEXT)
 169                 {
 170                         if(current->record)
 171                         {
 172                                 delete_track(current);
 173                                 total_deleted++;
 174                                 done = 0;
 175                         }
 176                 }
 177         }
 178         return total_deleted;
 179 }
 180
 181 void Tracks::move_edits(ArrayList<Edit*> *edits,
 182         Track *track,
 183         double position,
 184         int edit_labels,  // Ignored
 185         int edit_plugins,  // Ignored
 186         int behaviour)
 187 {
 188 //printf("Tracks::move_edits 1\n");
 189         for(Track *dest_track = track; dest_track; dest_track = dest_track->next)
 190         {
 191                 if(dest_track->record)
 192                 {
 193 // Need a local copy of the source edit since the original source edit may
 194 // change in the editing operation.
 195                         Edit *source_edit = 0;
 196                         Track *source_track = 0;
 197
 198
 199 // Get source track
 200                         if(dest_track->data_type == TRACK_AUDIO)
 201                         {
 202                                 int current_aedit = 0;
 203
 204                                 while(current_aedit < edits->total &&
 205                                         edits->values[current_aedit]->track->data_type != TRACK_AUDIO)
 206                                         current_aedit++;
 207
 208                                 if(current_aedit < edits->total)
 209                                 {
 210                                         source_edit = edits->values[current_aedit];
 211                                         source_track = source_edit->track;
 212                                         edits->remove_number(current_aedit);
 213                                 }
 214                         }
 215                         else
 216                         if(dest_track->data_type == TRACK_VIDEO)
 217                         {
 218                                 int current_vedit = 0;
 219                                 while(current_vedit < edits->total &&
 220                                         edits->values[current_vedit]->track->data_type != TRACK_VIDEO)
 221                                         current_vedit++;
 222
 223                                 if(current_vedit < edits->total)
 224                                 {
 225                                         source_edit = edits->values[current_vedit];
 226                                         source_track = source_edit->track;
 227                                         edits->remove_number(current_vedit);
 228                                 }
 229                         }
 230
 231 //printf("Tracks::move_edits 2 %s %s %d\n", source_track->title, dest_track->title, source_edit->length);
 232                         if(source_edit)
 233                         {
 234                                 int64_t position_i = source_track->to_units(position, 0);
 235 // Source edit changes
 236                                 int64_t source_length = source_edit->length;
 237                                 int64_t source_startproject = source_edit->startproject;
 238
 239                                 if (behaviour == 0)
 240                                 {
 241                                 // This works like this: CUT edit, INSERT edit at final position, keyframes also follow
 242                                 // FIXME: there should be a GUI way to tell whenever user also wants to move autos or not
 243 // Copy keyframes
 244                                         FileXML temp;
 245                                         AutoConf temp_autoconf;
 246
 247                                         temp_autoconf.set_all(1);
 248
 249                                         source_track->automation->copy(source_edit->startproject,
 250                                                 source_edit->startproject + source_edit->length,
 251                                                 &temp,
 252                                                 0,
 253                                                 0);
 254                                         temp.terminate_string();
 255                                         temp.rewind();
 256 // Insert new keyframes
 257 //printf("Tracks::move_edits 2 %d %p\n", result->startproject, result->asset);
 258                                         source_track->automation->clear(source_edit->startproject,
 259                                                 source_edit->startproject + source_edit->length,
 260                                                 &temp_autoconf,
 261                                                 1);
 262                                         int64_t position_a = position_i;
 263                                         if (dest_track == source_track)
 264                                         {
 265                                                 if (position_a > source_edit->startproject)
 266                                                         position_a -= source_length;
 267                                         }
 268
 269                                         dest_track->automation->paste_silence(position_a,
 270                                                 position_a + source_length);
 271                                         while(!temp.read_tag())
 272                                                 dest_track->automation->paste(position_a,
 273                                                         source_length,
 274                                                         1.0,
 275                                                         &temp,
 276                                                         0,
 277                                                         &temp_autoconf);
 278
 279 // Insert new edit
 280                                         Edit *dest_edit = dest_track->edits->shift(position_i,
 281                                                 source_length);
 282                                         Edit *result = dest_track->edits->insert_before(dest_edit,
 283                                                 new Edit(edl, dest_track));
 284                                         result->copy_from(source_edit);
 285                                         result->startproject = position_i;
 286                                         result->length = source_length;
 287
 288 // Clear source
 289                                         source_track->edits->clear(source_edit->startproject,
 290                                                 source_edit->startproject + source_length);
 291
 292         /*
 293 //this is outline for future thinking how it is supposed to be done trough C&P mechanisms
 294                                         temp.reset_tag();
 295                                         source_track->cut(source_edit->startproject,
 296                                                 source_edit->startproject + source_edit->length,
 297                                                 &temp,
 298                                                 NULL);
 299                                         temp.terminate_string();
 300                                         temp.rewind();
 301                                         dest_track->paste_silence(position_a,
 302                                                 position_a + source_length,
 303                                                 edit_plugins);
 304                                         while(!temp.read_tag())
 305                                                 dest_track->paste(position_a,          // MISSING PIECE OF FUNCTIONALITY
 306                                                         source_length,
 307                                                         1.0,
 308                                                         &temp,
 309                                                         0,
 310                                                         &temp_autoconf);
 311         */
 312
 313
 314                                 } else
 315                                 if (behaviour == 1)
 316                                 // ONLY edit is moved, all other edits stay where they are
 317                                 {
 318                                         // Copy edit to temp, delete the edit, insert the edit
 319                                         Edit *temp_edit = new Edit(edl, dest_track);
 320                                         temp_edit->copy_from(source_edit);
 321                                         // we call the edits directly since we do not want to move keyframes or anything else
 322                                         source_track->edits->clear(source_startproject,
 323                                                 source_startproject + source_length);
 324                                         source_track->edits->paste_silence(source_startproject,
 325                                                 source_startproject + source_length);
 326
 327                                         dest_track->edits->clear(position_i,
 328                                                 position_i + source_length);
 329                                         Edit *dest_edit = dest_track->edits->shift(position_i,  source_length);
 330                                         Edit *result = dest_track->edits->insert_before(dest_edit,
 331                                                 new Edit(edl, dest_track));
 332                                         result->copy_from(temp_edit);
 333                                         result->startproject = position_i;
 334                                         result->length = source_length;
 335                                         delete temp_edit;
 336                                 }
 337                                 source_track->optimize();
 338                                 dest_track->optimize();
 339                         }
 340                 }
 341         }
 342 }
 343
 344 void Tracks::move_effect(Plugin *plugin,
 345         PluginSet *dest_plugin_set,
 346         Track *dest_track,
 347         int64_t dest_position)
 348 {
 349         Track *source_track = plugin->track;
 350         Plugin *result = 0;
 351
 352 // Insert on an existing plugin set
 353         if(!dest_track && dest_plugin_set)
 354         {
 355                 Track *dest_track = dest_plugin_set->track;
 356
 357
 358 // Assume this operation never splits a plugin
 359 // Shift destination plugins back
 360                 dest_plugin_set->shift(dest_position, plugin->length);
 361
 362 // Insert new plugin
 363                 Plugin *current = 0;
 364                 for(current = (Plugin*)dest_plugin_set->first; current; current = (Plugin*)NEXT)
 365                         if(current->startproject >= dest_position) break;
 366
 367                 result = (Plugin*)dest_plugin_set->insert_before(current,
 368                         new Plugin(edl, dest_plugin_set, ""));
 369         }
 370         else
 371 // Create a new plugin set
 372         {
 373                 double length = 0;
 374                 double start = 0;
 375                 if(edl->local_session->get_selectionend() >
 376                         edl->local_session->get_selectionstart())
 377                 {
 378                         start = edl->local_session->get_selectionstart();
 379                         length = edl->local_session->get_selectionend() -
 380                                 start;
 381                 }
 382                 else
 383                 if(dest_track->get_length() > 0)
 384                 {
 385                         start = 0;
 386                         length = dest_track->get_length();
 387                 }
 388                 else
 389                 {
 390                         start = 0;
 391                         length = dest_track->from_units(plugin->length);
 392                 }
 393
 394
 395                 result = dest_track->insert_effect("",
 396                                 &plugin->shared_location,
 397                                 0,
 398                                 0,
 399                                 start,
 400                                 length,
 401                                 plugin->plugin_type);
 402         }
 403
 404
 405
 406         result->copy_from(plugin);
 407         result->shift(dest_position - plugin->startproject);
 408
 409 // Clear new plugin from old set
 410         plugin->plugin_set->clear(plugin->startproject, plugin->startproject + plugin->length);
 411
 412
 413         source_track->optimize();
 414 }
 415
 416
 417
 418 int Tracks::concatenate_tracks(int edit_plugins)
 419 {
 420         Track *output_track, *first_output_track, *input_track;
 421         int i, data_type = TRACK_AUDIO;
 422         double output_start;
 423         FileXML *clipboard;
 424         int result = 0;
 425         IntAuto *play_keyframe = 0;
 426
 427 // Relocate tracks
 428         for(i = 0; i < 2; i++)
 429         {
 430 // Get first output track
 431                 for(output_track = first;
 432                         output_track;
 433                         output_track = output_track->next)
 434                         if(output_track->data_type == data_type &&
 435                                 output_track->record) break;
 436
 437                 first_output_track = output_track;
 438
 439 // Get first input track
 440                 for(input_track = first;
 441                         input_track;
 442                         input_track = input_track->next)
 443                 {
 444                         if(input_track->data_type == data_type &&
 445                                 input_track->play &&
 446                                 !input_track->record) break;
 447                 }
 448
 449
 450                 if(output_track && input_track)
 451                 {
 452 // Transfer input track to end of output track one at a time
 453                         while(input_track)
 454                         {
 455                                 output_start = output_track->get_length();
 456                                 output_track->insert_track(input_track,
 457                                         output_start,
 458                                         0,
 459                                         edit_plugins);
 460
 461 // Get next source and destination
 462                                 for(input_track = input_track->next;
 463                                         input_track;
 464                                         input_track = input_track->next)
 465                                 {
 466
 467                                         if(input_track->data_type == data_type &&
 468                                                 !input_track->record &&
 469                                                 input_track->play) break;
 470                                 }
 471
 472                                 for(output_track = output_track->next;
 473                                         output_track;
 474                                         output_track = output_track->next)
 475                                 {
 476                                         if(output_track->data_type == data_type &&
 477                                                 output_track->record) break;
 478                                 }
 479
 480                                 if(!output_track)
 481                                 {
 482                                         output_track = first_output_track;
 483                                 }
 484                         }
 485                         result = 1;
 486                 }
 487
 488                 if(data_type == TRACK_AUDIO) data_type = TRACK_VIDEO;
 489         }
 490
 491         return result;
 492 }
 493
 494 int Tracks::delete_all_tracks()
 495 {
 496         while(last) delete last;
 497         return 0;
 498 }
 499
 500
 501 void Tracks::change_modules(int old_location, int new_location, int do_swap)
 502 {
 503         for(Track* current = first ; current; current = current->next)
 504         {
 505                 current->change_modules(old_location, new_location, do_swap);
 506         }
 507 }
 508
 509 void Tracks::change_plugins(SharedLocation &old_location, SharedLocation &new_location, int do_swap)
 510 {
 511         for(Track* current = first ; current; current = current->next)
 512         {
 513                 current->change_plugins(old_location, new_location, do_swap);
 514         }
 515 }
 516
 517
 518
 519 // =========================================== EDL editing
 520
 521
 522 int Tracks::copy(double start,
 523         double end,
 524         int all,
 525         FileXML *file,
 526         char *output_path)
 527 {
 528 // nothing selected
 529         if(start == end && !all) return 1;
 530
 531         Track* current;
 532
 533         for(current = first;
 534                 current;
 535                 current = NEXT)
 536         {
 537                 if(current->record || all)
 538                 {
 539                         current->copy(start, end, file,output_path);
 540                 }
 541         }
 542
 543         return 0;
 544 }
 545
 546
 547
 548 int Tracks::move_track_up(Track *track)
 549 {
 550         Track *next_track = track->previous;
 551         if(!next_track) next_track = last;
 552
 553         change_modules(number_of(track), number_of(next_track), 1);
 554
 555 // printf("Tracks::move_track_up 1 %p %p\n", track, next_track);
 556 // int count = 0;
 557 // for(Track *current = first; current && count < 5; current = NEXT, count++)
 558 //      printf("Tracks::move_track_up %p %p %p\n", current->previous, current, current->next);
 559 // printf("Tracks::move_track_up 2\n");
 560 //
 561         swap(track, next_track);
 562
 563 // count = 0;
 564 // for(Track *current = first; current && count < 5; current = NEXT, count++)
 565 //      printf("Tracks::move_track_up %p %p %p\n", current->previous, current, current->next);
 566 // printf("Tracks::move_track_up 3\n");
 567
 568         return 0;
 569 }
 570
 571 int Tracks::move_track_down(Track *track)
 572 {
 573         Track *next_track = track->next;
 574         if(!next_track) next_track = first;
 575
 576         change_modules(number_of(track), number_of(next_track), 1);
 577         swap(track, next_track);
 578         return 0;
 579 }
 580
 581
 582 int Tracks::move_tracks_up()
 583 {
 584         Track *track, *next_track;
 585         int result = 0;
 586
 587         for(track = first;
 588                 track;
 589                 track = next_track)
 590         {
 591                 next_track = track->next;
 592
 593                 if(track->record)
 594                 {
 595                         if(track->previous)
 596                         {
 597                                 change_modules(number_of(track->previous), number_of(track), 1);
 598
 599                                 swap(track->previous, track);
 600                                 result = 1;
 601                         }
 602                 }
 603         }
 604
 605         return result;
 606 }
 607
 608 int Tracks::move_tracks_down()
 609 {
 610         Track *track, *previous_track;
 611         int result = 0;
 612
 613         for(track = last;
 614                 track;
 615                 track = previous_track)
 616         {
 617                 previous_track = track->previous;
 618
 619                 if(track->record)
 620                 {
 621                         if(track->next)
 622                         {
 623                                 change_modules(number_of(track), number_of(track->next), 1);
 624
 625                                 swap(track, track->next);
 626                                 result = 1;
 627                         }
 628                 }
 629         }
 630
 631         return result;
 632 }
 633
 634
 635
 636 void Tracks::paste_audio_transition(PluginServer *server)
 637 {
 638         for(Track *current = first; current; current = NEXT)
 639         {
 640                 if(current->data_type == TRACK_AUDIO &&
 641                         current->record)
 642                 {
 643                         int64_t position = current->to_units(
 644                                 edl->local_session->get_selectionstart(), 0);
 645                         Edit *current_edit = current->edits->editof(position,
 646                                 PLAY_FORWARD,
 647                                 0);
 648                         if(current_edit)
 649                         {
 650                                 paste_transition(server, current_edit);
 651                         }
 652                 }
 653         }
 654 }
 655
 656 void Tracks::paste_automation(double selectionstart,
 657         FileXML *file,
 658         int default_only)
 659 {
 660         Track* current_atrack = 0;
 661         Track* current_vtrack = 0;
 662         int result = 0;
 663         double length;
 664         double frame_rate = edl->session->frame_rate;
 665         int64_t sample_rate = edl->session->sample_rate;
 666         char string[BCTEXTLEN];
 667         sprintf(string, "");
 668
 669 // Search for start
 670         do{
 671           result = file->read_tag();
 672         }while(!result &&
 673                 !file->tag.title_is("AUTO_CLIPBOARD"));
 674
 675         if(!result)
 676         {
 677                 length = file->tag.get_property("LENGTH", 0);
 678                 frame_rate = file->tag.get_property("FRAMERATE", frame_rate);
 679                 sample_rate = file->tag.get_property("SAMPLERATE", sample_rate);
 680
 681
 682                 do
 683                 {
 684                         result = file->read_tag();
 685
 686                         if(!result)
 687                         {
 688                                 if(file->tag.title_is("/AUTO_CLIPBOARD"))
 689                                 {
 690                                         result = 1;
 691                                 }
 692                                 else
 693                                 if(file->tag.title_is("TRACK"))
 694                                 {
 695                                         file->tag.get_property("TYPE", string);
 696
 697                                         if(!strcmp(string, "AUDIO"))
 698                                         {
 699 // Get next audio track
 700                                                 if(!current_atrack)
 701                                                         current_atrack = first;
 702                                                 else
 703                                                         current_atrack = current_atrack->next;
 704
 705                                                 while(current_atrack &&
 706                                                         (current_atrack->data_type != TRACK_AUDIO ||
 707                                                         !current_atrack->record))
 708                                                         current_atrack = current_atrack->next;
 709
 710 // Paste it
 711                                                 if(current_atrack)
 712                                                 {
 713                                                         current_atrack->paste_automation(selectionstart,
 714                                                                 length,
 715                                                                 frame_rate,
 716                                                                 sample_rate,
 717                                                                 file,
 718                                                                 default_only);
 719                                                 }
 720                                         }
 721                                         else
 722                                         {
 723 // Get next video track
 724                                                 if(!current_vtrack)
 725                                                         current_vtrack = first;
 726                                                 else
 727                                                         current_vtrack = current_vtrack->next;
 728
 729                                                 while(current_vtrack &&
 730                                                         (current_vtrack->data_type != TRACK_VIDEO ||
 731                                                         !current_vtrack->record))
 732                                                         current_vtrack = current_vtrack->next;
 733
 734 // Paste it
 735                                                 if(current_vtrack)
 736                                                 {
 737 //printf("Tracks::paste_automation 1 %s %d\n", current_vtrack->title, current_vtrack->record);
 738                                                         current_vtrack->paste_automation(selectionstart,
 739                                                                 length,
 740                                                                 frame_rate,
 741                                                                 sample_rate,
 742                                                                 file,
 743                                                                 default_only);
 744                                                 }
 745                                         }
 746                                 }
 747                         }
 748                 }while(!result);
 749         }
 750 }
 751
 752 int Tracks::paste_default_keyframe(FileXML *file)
 753 {
 754         paste_automation(0, file, 1);
 755         return 0;
 756 }
 757
 758 void Tracks::paste_transition(PluginServer *server, Edit *dest_edit)
 759 {
 760         dest_edit->insert_transition(server->title);
 761 }
 762
 763 void Tracks::paste_video_transition(PluginServer *server, int first_track)
 764 {
 765         for(Track *current = first; current; current = NEXT)
 766         {
 767                 if(current->data_type == TRACK_VIDEO &&
 768                         current->record)
 769                 {
 770                         int64_t position = current->to_units(
 771                                 edl->local_session->get_selectionstart(), 0);
 772                         Edit *current_edit = current->edits->editof(position,
 773                                 PLAY_FORWARD,
 774                                 0);
 775                         if(current_edit)
 776                         {
 777                                 paste_transition(server, current_edit);
 778                         }
 779                         if(first_track) break;
 780                 }
 781         }
 782 }
 783
 784
 785 int Tracks::paste_silence(double start, double end, int edit_plugins)
 786 {
 787         Track* current_track;
 788
 789         for(current_track = first;
 790                 current_track;
 791                 current_track = current_track->next)
 792         {
 793                 if(current_track->record)
 794                 {
 795                         current_track->paste_silence(start, end, edit_plugins);
 796                 }
 797         }
 798         return 0;
 799 }
 800
 801
 802
 803 int Tracks::select_auto(int cursor_x, int cursor_y)
 804 {
 805         int result = 0;
 806         for(Track* current = first; current && !result; current = NEXT) { result = current->select_auto(&auto_conf, cursor_x, cursor_y); }
 807         return result;
 808 }
 809
 810 int Tracks::move_auto(int cursor_x, int cursor_y, int shift_down)
 811 {
 812         int result = 0;
 813
 814         for(Track* current = first; current && !result; current = NEXT)
 815         {
 816                 result = current->move_auto(&auto_conf, cursor_x, cursor_y, shift_down);
 817         }
 818         return 0;
 819 }
 820
 821 int Tracks::modify_edithandles(double &oldposition,
 822         double &newposition,
 823         int currentend,
 824         int handle_mode,
 825         int edit_labels,
 826         int edit_plugins)
 827 {
 828         Track *current;
 829
 830         for(current = first; current; current = NEXT)
 831         {
 832                 if(current->record)
 833                 {
 834                         current->modify_edithandles(oldposition,
 835                                 newposition,
 836                                 currentend,
 837                                 handle_mode,
 838                                 edit_labels,
 839                                 edit_plugins);
 840                 }
 841         }
 842         return 0;
 843 }
 844
 845 int Tracks::modify_pluginhandles(double &oldposition,
 846         double &newposition,
 847         int currentend,
 848         int handle_mode,
 849         int edit_labels,
 850         Edits *trim_edits)
 851 {
 852         Track *current;
 853
 854         for(current = first; current; current = NEXT)
 855         {
 856                 if(current->record)
 857                 {
 858                         current->modify_pluginhandles(oldposition,
 859                                 newposition,
 860                                 currentend,
 861                                 handle_mode,
 862                                 edit_labels,
 863                                 trim_edits);
 864                 }
 865         }
 866         return 0;
 867 }
 868
 869
 870
 871 int Tracks::purge_asset(Asset *asset)
 872 {
 873         Track *current_track;
 874         int result = 0;
 875
 876         for(current_track = first; current_track; current_track = current_track->next)
 877         {
 878                 result += current_track->purge_asset(asset);
 879         }
 880         return result;
 881 }
 882
 883 int Tracks::asset_used(Asset *asset)
 884 {
 885         Track *current_track;
 886         int result = 0;
 887
 888         for(current_track = first; current_track; current_track = current_track->next)
 889         {
 890                 result += current_track->asset_used(asset);
 891         }
 892         return result;
 893 }
 894
 895 int Tracks::scale_time(float rate_scale, int ignore_record, int scale_edits, int scale_autos, int64_t start, int64_t end)
 896 {
 897         Track *current_track;
 898
 899         for(current_track = first;
 900                 current_track;
 901                 current_track = current_track->next)
 902         {
 903                 if((current_track->record || ignore_record) &&
 904                         current_track->data_type == TRACK_VIDEO)
 905                 {
 906                         current_track->scale_time(rate_scale, scale_edits, scale_autos, start, end);
 907                 }
 908         }
 909         return 0;
 910 }
 911