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
 338
 339
 340                                 source_track->optimize();
 341                                 dest_track->optimize();
 342                         }
 343                 }
 344         }
 345 }
 346
 347 void Tracks::move_effect(Plugin *plugin,
 348         PluginSet *dest_plugin_set,
 349         Track *dest_track,
 350         int64_t dest_position)
 351 {
 352         Track *source_track = plugin->track;
 353         Plugin *result = 0;
 354
 355 // Insert on an existing plugin set
 356         if(!dest_track && dest_plugin_set)
 357         {
 358                 Track *dest_track = dest_plugin_set->track;
 359
 360
 361 // Assume this operation never splits a plugin
 362 // Shift destination plugins back
 363                 dest_plugin_set->shift(dest_position, plugin->length);
 364
 365 // Insert new plugin
 366                 Plugin *current = 0;
 367                 for(current = (Plugin*)dest_plugin_set->first; current; current = (Plugin*)NEXT)
 368                         if(current->startproject >= dest_position) break;
 369
 370                 result = (Plugin*)dest_plugin_set->insert_before(current,
 371                         new Plugin(edl, dest_plugin_set, ""));
 372         }
 373         else
 374 // Create a new plugin set
 375         {
 376                 double length = 0;
 377                 double start = 0;
 378                 if(edl->local_session->get_selectionend() >
 379                         edl->local_session->get_selectionstart())
 380                 {
 381                         start = edl->local_session->get_selectionstart();
 382                         length = edl->local_session->get_selectionend() -
 383                                 start;
 384                 }
 385                 else
 386                 if(dest_track->get_length() > 0)
 387                 {
 388                         start = 0;
 389                         length = dest_track->get_length();
 390                 }
 391                 else
 392                 {
 393                         start = 0;
 394                         length = dest_track->from_units(plugin->length);
 395                 }
 396
 397
 398                 result = dest_track->insert_effect("",
 399                                 &plugin->shared_location,
 400                                 0,
 401                                 0,
 402                                 start,
 403                                 length,
 404                                 plugin->plugin_type);
 405         }
 406
 407
 408
 409         result->copy_from(plugin);
 410         result->shift(dest_position - plugin->startproject);
 411
 412 // Clear new plugin from old set
 413         plugin->plugin_set->clear(plugin->startproject, plugin->startproject + plugin->length);
 414
 415
 416         source_track->optimize();
 417 }
 418
 419
 420
 421 int Tracks::concatenate_tracks(int edit_plugins)
 422 {
 423         Track *output_track, *first_output_track, *input_track;
 424         int i, data_type = TRACK_AUDIO;
 425         double output_start;
 426         FileXML *clipboard;
 427         int result = 0;
 428         IntAuto *play_keyframe = 0;
 429
 430 // Relocate tracks
 431         for(i = 0; i < 2; i++)
 432         {
 433 // Get first output track
 434                 for(output_track = first;
 435                         output_track;
 436                         output_track = output_track->next)
 437                         if(output_track->data_type == data_type &&
 438                                 output_track->record) break;
 439
 440                 first_output_track = output_track;
 441
 442 // Get first input track
 443                 for(input_track = first;
 444                         input_track;
 445                         input_track = input_track->next)
 446                 {
 447                         if(input_track->data_type == data_type &&
 448                                 input_track->play &&
 449                                 !input_track->record) break;
 450                 }
 451
 452
 453                 if(output_track && input_track)
 454                 {
 455 // Transfer input track to end of output track one at a time
 456                         while(input_track)
 457                         {
 458                                 output_start = output_track->get_length();
 459                                 output_track->insert_track(input_track,
 460                                         output_start,
 461                                         0,
 462                                         edit_plugins);
 463
 464 // Get next source and destination
 465                                 for(input_track = input_track->next;
 466                                         input_track;
 467                                         input_track = input_track->next)
 468                                 {
 469
 470                                         if(input_track->data_type == data_type &&
 471                                                 !input_track->record &&
 472                                                 input_track->play) break;
 473                                 }
 474
 475                                 for(output_track = output_track->next;
 476                                         output_track;
 477                                         output_track = output_track->next)
 478                                 {
 479                                         if(output_track->data_type == data_type &&
 480                                                 output_track->record) break;
 481                                 }
 482
 483                                 if(!output_track)
 484                                 {
 485                                         output_track = first_output_track;
 486                                 }
 487                         }
 488                         result = 1;
 489                 }
 490
 491                 if(data_type == TRACK_AUDIO) data_type = TRACK_VIDEO;
 492         }
 493
 494         return result;
 495 }
 496
 497 int Tracks::delete_all_tracks()
 498 {
 499         while(last) delete last;
 500         return 0;
 501 }
 502
 503
 504 void Tracks::change_modules(int old_location, int new_location, int do_swap)
 505 {
 506         for(Track* current = first ; current; current = current->next)
 507         {
 508                 current->change_modules(old_location, new_location, do_swap);
 509         }
 510 }
 511
 512 void Tracks::change_plugins(SharedLocation &old_location, SharedLocation &new_location, int do_swap)
 513 {
 514         for(Track* current = first ; current; current = current->next)
 515         {
 516                 current->change_plugins(old_location, new_location, do_swap);
 517         }
 518 }
 519
 520
 521
 522 // =========================================== EDL editing
 523
 524
 525 int Tracks::copy(double start,
 526         double end,
 527         int all,
 528         FileXML *file,
 529         char *output_path)
 530 {
 531 // nothing selected
 532         if(start == end && !all) return 1;
 533
 534         Track* current;
 535
 536         for(current = first;
 537                 current;
 538                 current = NEXT)
 539         {
 540                 if(current->record || all)
 541                 {
 542                         current->copy(start, end, file,output_path);
 543                 }
 544         }
 545
 546         return 0;
 547 }
 548
 549
 550
 551 int Tracks::move_track_up(Track *track)
 552 {
 553         Track *next_track = track->previous;
 554         if(!next_track) next_track = last;
 555
 556         change_modules(number_of(track), number_of(next_track), 1);
 557
 558 // printf("Tracks::move_track_up 1 %p %p\n", track, next_track);
 559 // int count = 0;
 560 // for(Track *current = first; current && count < 5; current = NEXT, count++)
 561 //      printf("Tracks::move_track_up %p %p %p\n", current->previous, current, current->next);
 562 // printf("Tracks::move_track_up 2\n");
 563 //
 564         swap(track, next_track);
 565
 566 // count = 0;
 567 // for(Track *current = first; current && count < 5; current = NEXT, count++)
 568 //      printf("Tracks::move_track_up %p %p %p\n", current->previous, current, current->next);
 569 // printf("Tracks::move_track_up 3\n");
 570
 571         return 0;
 572 }
 573
 574 int Tracks::move_track_down(Track *track)
 575 {
 576         Track *next_track = track->next;
 577         if(!next_track) next_track = first;
 578
 579         change_modules(number_of(track), number_of(next_track), 1);
 580         swap(track, next_track);
 581         return 0;
 582 }
 583
 584
 585 int Tracks::move_tracks_up()
 586 {
 587         Track *track, *next_track;
 588         int result = 0;
 589
 590         for(track = first;
 591                 track;
 592                 track = next_track)
 593         {
 594                 next_track = track->next;
 595
 596                 if(track->record)
 597                 {
 598                         if(track->previous)
 599                         {
 600                                 change_modules(number_of(track->previous), number_of(track), 1);
 601
 602                                 swap(track->previous, track);
 603                                 result = 1;
 604                         }
 605                 }
 606         }
 607
 608         return result;
 609 }
 610
 611 int Tracks::move_tracks_down()
 612 {
 613         Track *track, *previous_track;
 614         int result = 0;
 615
 616         for(track = last;
 617                 track;
 618                 track = previous_track)
 619         {
 620                 previous_track = track->previous;
 621
 622                 if(track->record)
 623                 {
 624                         if(track->next)
 625                         {
 626                                 change_modules(number_of(track), number_of(track->next), 1);
 627
 628                                 swap(track, track->next);
 629                                 result = 1;
 630                         }
 631                 }
 632         }
 633
 634         return result;
 635 }
 636
 637
 638
 639 void Tracks::paste_audio_transition(PluginServer *server)
 640 {
 641         for(Track *current = first; current; current = NEXT)
 642         {
 643                 if(current->data_type == TRACK_AUDIO &&
 644                         current->record)
 645                 {
 646                         int64_t position = current->to_units(
 647                                 edl->local_session->get_selectionstart(), 0);
 648                         Edit *current_edit = current->edits->editof(position,
 649                                 PLAY_FORWARD,
 650                                 0);
 651                         if(current_edit)
 652                         {
 653                                 paste_transition(server, current_edit);
 654                         }
 655                 }
 656         }
 657 }
 658
 659 void Tracks::paste_automation(double selectionstart,
 660         FileXML *file,
 661         int default_only)
 662 {
 663         Track* current_atrack = 0;
 664         Track* current_vtrack = 0;
 665         int result = 0;
 666         double length;
 667         double frame_rate = edl->session->frame_rate;
 668         int64_t sample_rate = edl->session->sample_rate;
 669         char string[BCTEXTLEN];
 670         sprintf(string, "");
 671
 672 // Search for start
 673         do{
 674           result = file->read_tag();
 675         }while(!result &&
 676                 !file->tag.title_is("AUTO_CLIPBOARD"));
 677
 678         if(!result)
 679         {
 680                 length = file->tag.get_property("LENGTH", 0);
 681                 frame_rate = file->tag.get_property("FRAMERATE", frame_rate);
 682                 sample_rate = file->tag.get_property("SAMPLERATE", sample_rate);
 683
 684
 685                 do
 686                 {
 687                         result = file->read_tag();
 688
 689                         if(!result)
 690                         {
 691                                 if(file->tag.title_is("/AUTO_CLIPBOARD"))
 692                                 {
 693                                         result = 1;
 694                                 }
 695                                 else
 696                                 if(file->tag.title_is("TRACK"))
 697                                 {
 698                                         file->tag.get_property("TYPE", string);
 699
 700                                         if(!strcmp(string, "AUDIO"))
 701                                         {
 702 // Get next audio track
 703                                                 if(!current_atrack)
 704                                                         current_atrack = first;
 705                                                 else
 706                                                         current_atrack = current_atrack->next;
 707
 708                                                 while(current_atrack &&
 709                                                         (current_atrack->data_type != TRACK_AUDIO ||
 710                                                         !current_atrack->record))
 711                                                         current_atrack = current_atrack->next;
 712
 713 // Paste it
 714                                                 if(current_atrack)
 715                                                 {
 716                                                         current_atrack->paste_automation(selectionstart,
 717                                                                 length,
 718                                                                 frame_rate,
 719                                                                 sample_rate,
 720                                                                 file,
 721                                                                 default_only);
 722                                                 }
 723                                         }
 724                                         else
 725                                         {
 726 // Get next video track
 727                                                 if(!current_vtrack)
 728                                                         current_vtrack = first;
 729                                                 else
 730                                                         current_vtrack = current_vtrack->next;
 731
 732                                                 while(current_vtrack &&
 733                                                         (current_vtrack->data_type != TRACK_VIDEO ||
 734                                                         !current_vtrack->record))
 735                                                         current_vtrack = current_vtrack->next;
 736
 737 // Paste it
 738                                                 if(current_vtrack)
 739                                                 {
 740 //printf("Tracks::paste_automation 1 %s %d\n", current_vtrack->title, current_vtrack->record);
 741                                                         current_vtrack->paste_automation(selectionstart,
 742                                                                 length,
 743                                                                 frame_rate,
 744                                                                 sample_rate,
 745                                                                 file,
 746                                                                 default_only);
 747                                                 }
 748                                         }
 749                                 }
 750                         }
 751                 }while(!result);
 752         }
 753 }
 754
 755 int Tracks::paste_default_keyframe(FileXML *file)
 756 {
 757         paste_automation(0, file, 1);
 758         return 0;
 759 }
 760
 761 void Tracks::paste_transition(PluginServer *server, Edit *dest_edit)
 762 {
 763         dest_edit->insert_transition(server->title);
 764 }
 765
 766 void Tracks::paste_video_transition(PluginServer *server, int first_track)
 767 {
 768         for(Track *current = first; current; current = NEXT)
 769         {
 770                 if(current->data_type == TRACK_VIDEO &&
 771                         current->record)
 772                 {
 773                         int64_t position = current->to_units(
 774                                 edl->local_session->get_selectionstart(), 0);
 775                         Edit *current_edit = current->edits->editof(position,
 776                                 PLAY_FORWARD,
 777                                 0);
 778                         if(current_edit)
 779                         {
 780                                 paste_transition(server, current_edit);
 781                         }
 782                         if(first_track) break;
 783                 }
 784         }
 785 }
 786
 787
 788 int Tracks::paste_silence(double start, double end, int edit_plugins)
 789 {
 790         Track* current_track;
 791
 792         for(current_track = first;
 793                 current_track;
 794                 current_track = current_track->next)
 795         {
 796                 if(current_track->record)
 797                 {
 798                         current_track->paste_silence(start, end, edit_plugins);
 799                 }
 800         }
 801         return 0;
 802 }
 803
 804
 805
 806 int Tracks::select_auto(int cursor_x, int cursor_y)
 807 {
 808         int result = 0;
 809         for(Track* current = first; current && !result; current = NEXT) { result = current->select_auto(&auto_conf, cursor_x, cursor_y); }
 810         return result;
 811 }
 812
 813 int Tracks::move_auto(int cursor_x, int cursor_y, int shift_down)
 814 {
 815         int result = 0;
 816
 817         for(Track* current = first; current && !result; current = NEXT)
 818         {
 819                 result = current->move_auto(&auto_conf, cursor_x, cursor_y, shift_down);
 820         }
 821         return 0;
 822 }
 823
 824 int Tracks::modify_edithandles(double &oldposition,
 825         double &newposition,
 826         int currentend,
 827         int handle_mode,
 828         int edit_labels,
 829         int edit_plugins)
 830 {
 831         Track *current;
 832
 833         for(current = first; current; current = NEXT)
 834         {
 835                 if(current->record)
 836                 {
 837                         current->modify_edithandles(oldposition,
 838                                 newposition,
 839                                 currentend,
 840                                 handle_mode,
 841                                 edit_labels,
 842                                 edit_plugins);
 843                 }
 844         }
 845         return 0;
 846 }
 847
 848 int Tracks::modify_pluginhandles(double &oldposition,
 849         double &newposition,
 850         int currentend,
 851         int handle_mode,
 852         int edit_labels,
 853         Edits *trim_edits)
 854 {
 855         Track *current;
 856
 857         for(current = first; current; current = NEXT)
 858         {
 859                 if(current->record)
 860                 {
 861                         current->modify_pluginhandles(oldposition,
 862                                 newposition,
 863                                 currentend,
 864                                 handle_mode,
 865                                 edit_labels,
 866                                 trim_edits);
 867                 }
 868         }
 869         return 0;
 870 }
 871
 872
 873
 874 int Tracks::purge_asset(Asset *asset)
 875 {
 876         Track *current_track;
 877         int result = 0;
 878
 879         for(current_track = first; current_track; current_track = current_track->next)
 880         {
 881                 result += current_track->purge_asset(asset);
 882         }
 883         return result;
 884 }
 885
 886 int Tracks::asset_used(Asset *asset)
 887 {
 888         Track *current_track;
 889         int result = 0;
 890
 891         for(current_track = first; current_track; current_track = current_track->next)
 892         {
 893                 result += current_track->asset_used(asset);
 894         }
 895         return result;
 896 }
 897
 898 int Tracks::scale_time(float rate_scale, int ignore_record, int scale_edits, int scale_autos, int64_t start, int64_t end)
 899 {
 900         Track *current_track;
 901
 902         for(current_track = first;
 903                 current_track;
 904                 current_track = current_track->next)
 905         {
 906                 if((current_track->record || ignore_record) &&
 907                         current_track->data_type == TRACK_VIDEO)
 908                 {
 909                         current_track->scale_time(rate_scale, scale_edits, scale_autos, start, end);
 910                 }
 911         }
 912         return 0;
 913 }
 914