cinelerra-5.1/cinelerra/edl.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 1997-2012 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 "asset.h"
  23 #include "assets.h"
  24 #include "atrack.h"
  25 #include "autoconf.h"
  26 #include "automation.h"
  27 #include "awindowgui.inc"
  28 #include "bcsignals.h"
  29 #include "clip.h"
  30 #include "bccmodels.h"
  31 #include "bchash.h"
  32 #include "edits.h"
  33 #include "edl.h"
  34 #include "edlsession.h"
  35 #include "filexml.h"
  36 #include "guicast.h"
  37 #include "indexstate.h"
  38 #include "interlacemodes.h"
  39 #include "labels.h"
  40 #include "localsession.h"
  41 #include "maskautos.h"
  42 #include "mutex.h"
  43 #include "nestededls.h"
  44 #include "panauto.h"
  45 #include "panautos.h"
  46 #include "playbackconfig.h"
  47 #include "playabletracks.h"
  48 #include "plugin.h"
  49 #include "preferences.h"
  50 #include "recordconfig.h"
  51 #include "recordlabel.h"
  52 #include "sharedlocation.h"
  53 #include "theme.h"
  54 #include "tracks.h"
  55 #include "transportque.inc"
  56 #include "versioninfo.h"
  57 #include "vedit.h"
  58 #include "vtrack.h"
  59
  60
  61
  62
  63 Mutex* EDL::id_lock = 0;
  64
  65
  66
  67 EDL::EDL(EDL *parent_edl)
  68  : Indexable(0)
  69 {
  70         this->parent_edl = parent_edl;
  71         tracks = 0;
  72         labels = 0;
  73         local_session = 0;
  74 //      vwindow_edl = 0;
  75 //      vwindow_edl_shared = 0;
  76
  77         folders.set_array_delete();
  78
  79 // persistent for now
  80 //      new_folder(CLIP_FOLDER);
  81 //      new_folder(MEDIA_FOLDER);
  82
  83         id = next_id();
  84         path[0] = 0;
  85 }
  86
  87
  88 EDL::~EDL()
  89 {
  90
  91         if(tracks)
  92         {
  93                 delete tracks;
  94         }
  95         if(labels)
  96         {
  97                 delete labels;
  98         }
  99
 100         if(local_session)
 101         {
 102                 delete local_session;
 103         }
 104
 105
 106         remove_vwindow_edls();
 107
 108 //      if(vwindow_edl && !vwindow_edl_shared)
 109 //              vwindow_edl->Garbage::remove_user();
 110
 111         if(!parent_edl)
 112         {
 113                 delete assets;
 114                 delete session;
 115         }
 116
 117
 118         folders.remove_all_objects();
 119         for(int i = 0; i < clips.size(); i++)
 120                 clips.get(i)->Garbage::remove_user();
 121         clips.remove_all();
 122         delete nested_edls;
 123 }
 124
 125
 126
 127 void EDL::create_objects()
 128 {
 129         tracks = new Tracks(this);
 130         if(!parent_edl)
 131         {
 132                 assets = new Assets(this);
 133                 session = new EDLSession(this);
 134         }
 135         else
 136         {
 137                 assets = parent_edl->assets;
 138                 session = parent_edl->session;
 139         }
 140
 141         local_session = new LocalSession(this);
 142         labels = new Labels(this, "LABELS");
 143         nested_edls = new NestedEDLs;
 144 //      last_playback_position = 0;
 145 }
 146
 147 EDL& EDL::operator=(EDL &edl)
 148 {
 149 printf("EDL::operator= 1\n");
 150         copy_all(&edl);
 151         return *this;
 152 }
 153
 154 int EDL::load_defaults(BC_Hash *defaults)
 155 {
 156         if(!parent_edl)
 157                 session->load_defaults(defaults);
 158
 159         local_session->load_defaults(defaults);
 160         return 0;
 161 }
 162
 163 int EDL::save_defaults(BC_Hash *defaults)
 164 {
 165         if(!parent_edl)
 166                 session->save_defaults(defaults);
 167
 168         local_session->save_defaults(defaults);
 169         return 0;
 170 }
 171
 172 void EDL::boundaries()
 173 {
 174         session->boundaries();
 175         local_session->boundaries();
 176 }
 177
 178 int EDL::create_default_tracks()
 179 {
 180
 181         for(int i = 0; i < session->video_tracks; i++)
 182         {
 183                 tracks->add_video_track(0, 0);
 184         }
 185         for(int i = 0; i < session->audio_tracks; i++)
 186         {
 187                 tracks->add_audio_track(0, 0);
 188         }
 189         return 0;
 190 }
 191
 192 int EDL::load_xml(FileXML *file,
 193         uint32_t load_flags)
 194 {
 195         int result = 0;
 196 // Track numbering offset for replacing undo data.
 197         int track_offset = 0;
 198
 199 // Clear objects
 200         folders.remove_all_objects();
 201
 202         if((load_flags & LOAD_ALL) == LOAD_ALL)
 203         {
 204                 remove_vwindow_edls();
 205         }
 206
 207
 208 // Search for start of master EDL.
 209
 210 // The parent_edl test caused clip creation to fail since those XML files
 211 // contained an EDL tag.
 212
 213 // The parent_edl test is required to make EDL loading work because
 214 // when loading an EDL the EDL tag is already read by the parent.
 215
 216         if(!parent_edl)
 217         {
 218                 do{
 219                   result = file->read_tag();
 220                 }while(!result &&
 221                         !file->tag.title_is("XML") &&
 222                         !file->tag.title_is("EDL"));
 223         }
 224
 225         if(!result)
 226         {
 227 // Get path for backups
 228 //              path[0] = 0;
 229                 file->tag.get_property("path", path);
 230
 231 // Erase everything
 232                 if((load_flags & LOAD_ALL) == LOAD_ALL ||
 233                         (load_flags & LOAD_EDITS) == LOAD_EDITS)
 234                 {
 235                         while(tracks->last) delete tracks->last;
 236                 }
 237
 238                 if((load_flags & LOAD_ALL) == LOAD_ALL)
 239                 {
 240                         for(int i = 0; i < clips.size(); i++)
 241                                 clips.get(i)->Garbage::remove_user();
 242                         clips.remove_all();
 243                         mixers.remove_all_objects();
 244                 }
 245
 246                 if(load_flags & LOAD_TIMEBAR)
 247                 {
 248                         while(labels->last) delete labels->last;
 249                         local_session->unset_inpoint();
 250                         local_session->unset_outpoint();
 251                 }
 252
 253 // This was originally in LocalSession::load_xml
 254                 if(load_flags & LOAD_SESSION)
 255                 {
 256                         local_session->clipboard_length = 0;
 257                 }
 258
 259                 do{
 260                         result = file->read_tag();
 261
 262                         if(!result)
 263                         {
 264                                 if(file->tag.title_is("/XML") ||
 265                                         file->tag.title_is("/EDL") ||
 266                                         file->tag.title_is("/CLIP_EDL") ||
 267                                         file->tag.title_is("/VWINDOW_EDL"))
 268                                 {
 269                                         result = 1;
 270                                 }
 271                                 else
 272                                 if(file->tag.title_is("CLIPBOARD"))
 273                                 {
 274                                         local_session->clipboard_length =
 275                                                 file->tag.get_property("LENGTH", (double)0);
 276                                 }
 277                                 else
 278                                 if(file->tag.title_is("VIDEO"))
 279                                 {
 280                                         if((load_flags & LOAD_VCONFIG) &&
 281                                                 (load_flags & LOAD_SESSION))
 282                                                 session->load_video_config(file, 0, load_flags);
 283                                         else
 284                                                 result = file->skip_tag();
 285                                 }
 286                                 else
 287                                 if(file->tag.title_is("AUDIO"))
 288                                 {
 289                                         if((load_flags & LOAD_ACONFIG) &&
 290                                                 (load_flags & LOAD_SESSION))
 291                                                 session->load_audio_config(file, 0, load_flags);
 292                                         else
 293                                                 result = file->skip_tag();
 294                                 }
 295                                 else
 296                                 if(file->tag.title_is("FOLDER"))
 297                                 {
 298                                         char folder[BCTEXTLEN];
 299                                         strcpy(folder, file->read_text());
 300                                         new_folder(folder);
 301                                 }
 302                                 else
 303                                 if(file->tag.title_is("MIXERS"))
 304                                 {
 305                                         if((load_flags & LOAD_SESSION))
 306                                                 mixers.load(file);
 307                                         else
 308                                                 result = file->skip_tag();
 309                                 }
 310                                 else
 311                                 if(file->tag.title_is("ASSETS"))
 312                                 {
 313                                         if(load_flags & LOAD_ASSETS)
 314                                                 assets->load(file, load_flags);
 315                                         else
 316                                                 result = file->skip_tag();
 317                                 }
 318                                 else
 319                                 if(file->tag.title_is(labels->xml_tag))
 320                                 {
 321                                         if(load_flags & LOAD_TIMEBAR)
 322                                                 labels->load(file, load_flags);
 323                                         else
 324                                                 result = file->skip_tag();
 325                                 }
 326                                 else
 327                                 if(file->tag.title_is("LOCALSESSION"))
 328                                 {
 329                                         if((load_flags & LOAD_SESSION) ||
 330                                                 (load_flags & LOAD_TIMEBAR))
 331                                                 local_session->load_xml(file, load_flags);
 332                                         else
 333                                                 result = file->skip_tag();
 334                                 }
 335                                 else
 336                                 if(file->tag.title_is("SESSION"))
 337                                 {
 338                                         if((load_flags & LOAD_SESSION) &&
 339                                                 !parent_edl)
 340                                                 session->load_xml(file, 0, load_flags);
 341                                         else
 342                                                 result = file->skip_tag();
 343                                 }
 344                                 else
 345                                 if(file->tag.title_is("TRACK"))
 346                                 {
 347                                         tracks->load(file, track_offset, load_flags);
 348                                 }
 349                                 else
 350 // Sub EDL.
 351 // Causes clip creation to fail because that involves an opening EDL tag.
 352                                 if(file->tag.title_is("CLIP_EDL") && !parent_edl)
 353                                 {
 354                                         EDL *new_edl = new EDL(this);
 355                                         new_edl->create_objects();
 356                                         new_edl->load_xml(file, LOAD_ALL);
 357
 358                                         if((load_flags & LOAD_ALL) == LOAD_ALL)
 359                                                 clips.append(new_edl);
 360                                         else
 361                                                 new_edl->Garbage::remove_user();
 362                                 }
 363                                 else
 364                                 if(file->tag.title_is("VWINDOW_EDL") && !parent_edl)
 365                                 {
 366                                         EDL *new_edl = new EDL(this);
 367                                         new_edl->create_objects();
 368                                         new_edl->load_xml(file, LOAD_ALL);
 369
 370
 371                                         if((load_flags & LOAD_ALL) == LOAD_ALL)
 372                                         {
 373 //                                              if(vwindow_edl && !vwindow_edl_shared)
 374 //                                                      vwindow_edl->Garbage::remove_user();
 375 //                                              vwindow_edl_shared = 0;
 376 //                                              vwindow_edl = new_edl;
 377
 378                                                 append_vwindow_edl(new_edl, 0);
 379
 380                                         }
 381                                         else
 382 // Discard if not replacing EDL
 383                                         {
 384                                                 new_edl->Garbage::remove_user();
 385                                                 new_edl = 0;
 386                                         }
 387                                 }
 388                         }
 389                 }while(!result);
 390         }
 391         boundaries();
 392 //dump();
 393
 394         return 0;
 395 }
 396
 397 // Output path is the path of the output file if name truncation is desired.
 398 // It is a "" if complete names should be used.
 399 // Called recursively by copy for clips, thus the string can't be terminated.
 400 // The string is not terminated in this call.
 401 int EDL::save_xml(FileXML *file,
 402         const char *output_path,
 403         int is_clip,
 404         int is_vwindow)
 405 {
 406         copy(0,
 407                 tracks->total_length(),
 408                 1,
 409                 is_clip,
 410                 is_vwindow,
 411                 file,
 412                 output_path,
 413                 0);
 414         return 0;
 415 }
 416
 417 int EDL::copy_all(EDL *edl)
 418 {
 419         if(this == edl) return 0;
 420         update_index(edl);
 421         nested_edls->clear();
 422         copy_session(edl);
 423         copy_assets(edl);
 424         copy_clips(edl);
 425         copy_mixers(edl);
 426         tracks->copy_from(edl->tracks);
 427         labels->copy_from(edl->labels);
 428         return 0;
 429 }
 430
 431 void EDL::copy_clips(EDL *edl)
 432 {
 433         if(this == edl) return;
 434
 435         remove_vwindow_edls();
 436
 437 //      if(vwindow_edl && !vwindow_edl_shared)
 438 //              vwindow_edl->Garbage::remove_user();
 439 //      vwindow_edl = 0;
 440 //      vwindow_edl_shared = 0;
 441
 442         for(int i = 0; i < edl->total_vwindow_edls(); i++)
 443         {
 444                 EDL *new_edl = new EDL(this);
 445                 new_edl->create_objects();
 446                 new_edl->copy_all(edl->get_vwindow_edl(i));
 447                 append_vwindow_edl(new_edl, 0);
 448         }
 449
 450         for(int i = 0; i < clips.size(); i++)
 451                 clips.get(i)->Garbage::remove_user();
 452         clips.remove_all();
 453         for(int i = 0; i < edl->clips.total; i++)
 454         {
 455                 add_clip(edl->clips.values[i]);
 456         }
 457 }
 458
 459 void EDL::copy_assets(EDL *edl)
 460 {
 461         if(this == edl) return;
 462
 463         if(!parent_edl)
 464         {
 465                 assets->copy_from(edl->assets);
 466         }
 467 }
 468
 469 void EDL::copy_mixers(EDL *edl)
 470 {
 471         if(this == edl) return;
 472         mixers.copy_from(edl->mixers);
 473 }
 474
 475 void EDL::copy_session(EDL *edl, int session_only)
 476 {
 477         if(this == edl) return;
 478
 479         if(!session_only)
 480         {
 481                 strcpy(this->path, edl->path);
 482 //printf("EDL::copy_session %p %s\n", this, this->path);
 483
 484                 folders.remove_all_objects();
 485                 for(int i = 0; i < edl->folders.total; i++)
 486                 {
 487                         char *new_folder;
 488                         folders.append(new_folder = new char[strlen(edl->folders.values[i]) + 1]);
 489                         strcpy(new_folder, edl->folders.values[i]);
 490                 }
 491         }
 492
 493         if(!parent_edl)
 494         {
 495                 session->copy(edl->session);
 496         }
 497
 498         if(!session_only)
 499         {
 500                 local_session->copy_from(edl->local_session);
 501         }
 502 }
 503
 504 int EDL::copy_assets(double start,
 505         double end,
 506         FileXML *file,
 507         int all,
 508         const char *output_path)
 509 {
 510         ArrayList<Asset*> asset_list;
 511         Track* current;
 512
 513         file->tag.set_title("ASSETS");
 514         file->append_tag();
 515         file->append_newline();
 516
 517 // Copy everything for a save
 518         if(all)
 519         {
 520                 for(Asset *asset = assets->first;
 521                         asset;
 522                         asset = asset->next)
 523                 {
 524                         asset_list.append(asset);
 525                 }
 526         }
 527         else
 528 // Copy just the ones being used.
 529         {
 530                 for(current = tracks->first;
 531                         current;
 532                         current = NEXT)
 533                 {
 534                         if(current->record)
 535                         {
 536                                 current->copy_assets(start,
 537                                         end,
 538                                         &asset_list);
 539                         }
 540                 }
 541         }
 542
 543 // Paths relativised here
 544         for(int i = 0; i < asset_list.total; i++)
 545         {
 546                 asset_list.values[i]->write(file,
 547                         0,
 548                         output_path);
 549         }
 550
 551         file->tag.set_title("/ASSETS");
 552         file->append_tag();
 553         file->append_newline();
 554         file->append_newline();
 555         return 0;
 556 }
 557
 558 int EDL::copy(double start,
 559         double end,
 560         int all,
 561         int is_clip,
 562         int is_vwindow,
 563         FileXML *file,
 564         const char *output_path,
 565         int rewind_it)
 566 {
 567 //printf("EDL::copy 1\n");
 568 // begin file
 569         if(is_clip)
 570                 file->tag.set_title("CLIP_EDL");
 571         else
 572         if(is_vwindow)
 573                 file->tag.set_title("VWINDOW_EDL");
 574         else
 575         {
 576                 file->tag.set_title("EDL");
 577                 file->tag.set_property("VERSION", CINELERRA_VERSION);
 578 // Save path for restoration of the project title from a backup.
 579                 if(this->path[0])
 580                 {
 581                         file->tag.set_property("PATH", path);
 582                 }
 583         }
 584
 585         file->append_tag();
 586         file->append_newline();
 587
 588 // Set clipboard samples only if copying to clipboard
 589         if(!all)
 590         {
 591                 file->tag.set_title("CLIPBOARD");
 592                 file->tag.set_property("LENGTH", end - start);
 593                 file->append_tag();
 594                 file->tag.set_title("/CLIPBOARD");
 595                 file->append_tag();
 596                 file->append_newline();
 597                 file->append_newline();
 598         }
 599 //printf("EDL::copy 1\n");
 600
 601 // Sessions
 602         local_session->save_xml(file, start);
 603
 604 //printf("EDL::copy 1\n");
 605
 606 // Top level stuff.
 607 //      if(!parent_edl)
 608         {
 609 // Need to copy all this from child EDL if pasting is desired.
 610 // Session
 611                 session->save_xml(file);
 612                 session->save_video_config(file);
 613                 session->save_audio_config(file);
 614
 615 // Folders
 616                 for(int i = 0; i < folders.total; i++)
 617                 {
 618                         file->tag.set_title("FOLDER");
 619                         file->append_tag();
 620                         file->append_text(folders.values[i]);
 621                         file->tag.set_title("/FOLDER");
 622                         file->append_tag();
 623                         file->append_newline();
 624                 }
 625
 626 // Media
 627 // Don't replicate all assets for every clip.
 628 // The assets for the clips are probably in the main EDL.
 629                 if( !is_clip )
 630                         copy_assets(start, end, file, all, output_path);
 631 // Clips
 632 // Don't want this if using clipboard
 633                 if(all)
 634                 {
 635                         for(int i = 0; i < total_vwindow_edls(); i++)
 636                         {
 637                                 get_vwindow_edl(i)->save_xml(file,
 638                                         output_path,
 639                                         0,
 640                                         1);
 641                         }
 642
 643                         for(int i = 0; i < clips.total; i++)
 644                                 clips.values[i]->save_xml(file,
 645                                         output_path,
 646                                         1,
 647                                         0);
 648                         mixers.save(file);
 649                 }
 650
 651                 file->append_newline();
 652                 file->append_newline();
 653         }
 654
 655
 656 //printf("EDL::copy 1\n");
 657
 658         labels->copy(start, end, file);
 659 //printf("EDL::copy 1\n");
 660         tracks->copy(start, end, all, file, output_path);
 661 //printf("EDL::copy 2\n");
 662
 663 // terminate file
 664         if( is_clip )
 665                 file->tag.set_title("/CLIP_EDL");
 666         else if( is_vwindow )
 667                 file->tag.set_title("/VWINDOW_EDL");
 668         else
 669                 file->tag.set_title("/EDL");
 670         file->append_tag();
 671         file->append_newline();
 672
 673
 674 // For editing operations we want to rewind it for immediate pasting.
 675 // For clips and saving to disk leave it alone.
 676         if(rewind_it)
 677         {
 678                 file->terminate_string();
 679                 file->rewind();
 680         }
 681         return 0;
 682 }
 683
 684 void EDL::retrack()
 685 {
 686         int min_w = session->output_w, min_h = session->output_h;
 687         for( Track *track=tracks->first; track!=0; track=track->next ) {
 688                 if( track->data_type != TRACK_VIDEO ) continue;
 689                 int w = min_w, h = min_h;
 690                 for( Edit *current=track->edits->first; current!=0; current=NEXT ) {
 691                         Indexable* indexable = current->get_source();
 692                         if( !indexable ) continue;
 693                         int edit_w = indexable->get_w(), edit_h = indexable->get_h();
 694                         if( w < edit_w ) w = edit_w;
 695                         if( h < edit_h ) h = edit_h;
 696                 }
 697                 if( track->track_w == w && track->track_h == h ) continue;
 698                 ((MaskAutos*)track->automation->autos[AUTOMATION_MASK])->
 699                         translate_masks( (w - track->track_w) / 2, (h - track->track_h) / 2);
 700                 track->track_w = w;  track->track_h = h;
 701         }
 702 }
 703
 704 void EDL::rechannel()
 705 {
 706         for(Track *current = tracks->first; current; current = NEXT)
 707         {
 708                 if(current->data_type == TRACK_AUDIO)
 709                 {
 710                         PanAutos *autos = (PanAutos*)current->automation->autos[AUTOMATION_PAN];
 711                         ((PanAuto*)autos->default_auto)->rechannel();
 712                         for(PanAuto *keyframe = (PanAuto*)autos->first;
 713                                 keyframe;
 714                                 keyframe = (PanAuto*)keyframe->next)
 715                         {
 716                                 keyframe->rechannel();
 717                         }
 718                 }
 719         }
 720 }
 721
 722 void EDL::resample(double old_rate, double new_rate, int data_type)
 723 {
 724         for(Track *current = tracks->first; current; current = NEXT)
 725         {
 726                 if(current->data_type == data_type)
 727                 {
 728                         current->resample(old_rate, new_rate);
 729                 }
 730         }
 731 }
 732
 733
 734 void EDL::synchronize_params(EDL *edl)
 735 {
 736         local_session->synchronize_params(edl->local_session);
 737         for(Track *this_track = tracks->first, *that_track = edl->tracks->first;
 738                 this_track && that_track;
 739                 this_track = this_track->next,
 740                 that_track = that_track->next)
 741         {
 742                 this_track->synchronize_params(that_track);
 743         }
 744 }
 745
 746 int EDL::trim_selection(double start,
 747         double end,
 748         int edit_labels,
 749         int edit_plugins,
 750         int edit_autos)
 751 {
 752         if(start != end)
 753         {
 754 // clear the data
 755                 clear(0,
 756                         start,
 757                         edit_labels,
 758                         edit_plugins,
 759                         edit_autos);
 760                 clear(end - start,
 761                         tracks->total_length(),
 762                         edit_labels,
 763                         edit_plugins,
 764                         edit_autos);
 765         }
 766         return 0;
 767 }
 768
 769
 770 int EDL::equivalent(double position1, double position2)
 771 {
 772         double threshold = (double).5 / session->frame_rate;
 773         if(session->cursor_on_frames)
 774                 threshold = (double).5 / session->frame_rate;
 775         else
 776                 threshold = (double)1 / session->sample_rate;
 777
 778         if(fabs(position2 - position1) < threshold)
 779         return 1;
 780     else
 781         return 0;
 782 }
 783
 784 double EDL::equivalent_output(EDL *edl)
 785 {
 786         double result = -1;
 787         session->equivalent_output(edl->session, &result);
 788         tracks->equivalent_output(edl->tracks, &result);
 789         return result;
 790 }
 791
 792
 793 void EDL::set_path(const char *path)
 794 {
 795         strcpy(this->path, path);
 796 }
 797
 798 void EDL::set_inpoint(double position)
 799 {
 800         if(equivalent(local_session->get_inpoint(), position) &&
 801                 local_session->get_inpoint() >= 0)
 802         {
 803                 local_session->unset_inpoint();
 804         }
 805         else
 806         {
 807                 local_session->set_inpoint(align_to_frame(position, 0));
 808                 if(local_session->get_outpoint() <= local_session->get_inpoint())
 809                         local_session->unset_outpoint();
 810         }
 811 }
 812
 813 void EDL::set_outpoint(double position)
 814 {
 815         if(equivalent(local_session->get_outpoint(), position) &&
 816                 local_session->get_outpoint() >= 0)
 817         {
 818                 local_session->unset_outpoint();
 819         }
 820         else
 821         {
 822                 local_session->set_outpoint(align_to_frame(position, 0));
 823                 if(local_session->get_inpoint() >= local_session->get_outpoint())
 824                         local_session->unset_inpoint();
 825         }
 826 }
 827
 828 void EDL::deglitch(double position)
 829 {
 830         if( !session->cursor_on_frames ) return;
 831         Track *current_track = tracks->first;
 832         for( ; current_track; current_track=current_track->next ) {
 833                 if( !current_track->record ) continue;
 834                 if( current_track->data_type != TRACK_AUDIO ) continue;
 835                 ATrack *atrack = (ATrack*)current_track;
 836                 atrack->deglitch(position,
 837                         session->labels_follow_edits,
 838                         session->plugins_follow_edits,
 839                         session->autos_follow_edits);
 840         }
 841 }
 842
 843 int EDL::clear(double start, double end,
 844         int clear_labels, int clear_plugins, int edit_autos)
 845 {
 846         if(start == end)
 847         {
 848                 double distance = 0;
 849                 tracks->clear_handle(start,
 850                         end,
 851                         distance,
 852                         clear_labels,
 853                         clear_plugins,
 854                         edit_autos);
 855                 if(clear_labels && distance > 0)
 856                         labels->paste_silence(start,
 857                                 start + distance);
 858         }
 859         else
 860         {
 861                 tracks->clear(start,
 862                         end,
 863                         clear_plugins,
 864                         edit_autos);
 865                 if(clear_labels)
 866                         labels->clear(start,
 867                                 end,
 868                                 1);
 869         }
 870
 871 // Need to put at beginning so a subsequent paste operation starts at the
 872 // right position.
 873         double position = local_session->get_selectionstart();
 874         local_session->set_selectionend(position);
 875         local_session->set_selectionstart(position);
 876         return 0;
 877 }
 878
 879 void EDL::modify_edithandles(double oldposition,
 880         double newposition,
 881         int currentend,
 882         int handle_mode,
 883         int edit_labels,
 884         int edit_plugins,
 885         int edit_autos)
 886 {
 887         tracks->modify_edithandles(oldposition,
 888                 newposition,
 889                 currentend,
 890                 handle_mode,
 891                 edit_labels,
 892                 edit_plugins,
 893                 edit_autos);
 894         labels->modify_handles(oldposition,
 895                 newposition,
 896                 currentend,
 897                 handle_mode,
 898                 edit_labels);
 899 }
 900
 901 void EDL::modify_pluginhandles(double oldposition,
 902         double newposition,
 903         int currentend,
 904         int handle_mode,
 905         int edit_labels,
 906         int edit_autos,
 907         Edits *trim_edits)
 908 {
 909         tracks->modify_pluginhandles(oldposition,
 910                 newposition,
 911                 currentend,
 912                 handle_mode,
 913                 edit_labels,
 914                 edit_autos,
 915                 trim_edits);
 916         optimize();
 917 }
 918
 919 void EDL::paste_silence(double start,
 920         double end,
 921         int edit_labels,
 922         int edit_plugins,
 923         int edit_autos)
 924 {
 925         if(edit_labels)
 926                 labels->paste_silence(start, end);
 927         tracks->paste_silence(start,
 928                 end,
 929                 edit_plugins,
 930                 edit_autos);
 931 }
 932
 933
 934 void EDL::remove_from_project(ArrayList<EDL*> *clips)
 935 {
 936         for(int i = 0; i < clips->size(); i++)
 937         {
 938                 for(int j = 0; j < this->clips.size(); j++)
 939                 {
 940                         if(this->clips.get(j) == clips->values[i])
 941                         {
 942                                 EDL *clip = this->clips.get(j);
 943                                 this->clips.remove(clip);
 944                                 clip->Garbage::remove_user();
 945                         }
 946                 }
 947         }
 948 }
 949
 950 void EDL::remove_from_project(ArrayList<Indexable*> *assets)
 951 {
 952 // Remove from clips
 953         if(!parent_edl)
 954                 for(int j = 0; j < clips.total; j++)
 955                 {
 956                         clips.values[j]->remove_from_project(assets);
 957                 }
 958
 959 // Remove from VWindow EDLs
 960         for(int i = 0; i < total_vwindow_edls(); i++)
 961                 get_vwindow_edl(i)->remove_from_project(assets);
 962
 963         for(int i = 0; i < assets->size(); i++)
 964         {
 965 // Remove from tracks
 966                 for(Track *track = tracks->first; track; track = track->next)
 967                 {
 968                         track->remove_asset(assets->get(i));
 969                 }
 970
 971 // Remove from assets
 972                 if(!parent_edl && assets->get(i)->is_asset)
 973                 {
 974                         this->assets->remove_asset((Asset*)assets->get(i));
 975                 }
 976                 else
 977                 if(!parent_edl && !assets->get(i)->is_asset)
 978                 {
 979                         this->nested_edls->remove_edl((EDL*)assets->get(i));
 980                 }
 981         }
 982 }
 983
 984 void EDL::update_assets(EDL *src)
 985 {
 986         for(Asset *current = src->assets->first;
 987                 current;
 988                 current = NEXT)
 989         {
 990                 assets->update(current);
 991         }
 992 }
 993
 994 int EDL::get_tracks_height(Theme *theme)
 995 {
 996         int total_pixels = 0;
 997         for(Track *current = tracks->first;
 998                 current;
 999                 current = NEXT)
1000         {
1001                 total_pixels += current->vertical_span(theme);
1002         }
1003         return total_pixels;
1004 }
1005
1006 int64_t EDL::get_tracks_width()
1007 {
1008         int64_t total_pixels = 0;
1009         for(Track *current = tracks->first;
1010                 current;
1011                 current = NEXT)
1012         {
1013                 int64_t pixels = current->horizontal_span();
1014                 if(pixels > total_pixels) total_pixels = pixels;
1015         }
1016 //printf("EDL::get_tracks_width %d\n", total_pixels);
1017         return total_pixels;
1018 }
1019
1020 // int EDL::calculate_output_w(int single_channel)
1021 // {
1022 //      if(single_channel) return session->output_w;
1023 //
1024 //      int widest = 0;
1025 //      for(int i = 0; i < session->video_channels; i++)
1026 //      {
1027 //              if(session->vchannel_x[i] + session->output_w > widest) widest = session->vchannel_x[i] + session->output_w;
1028 //      }
1029 //      return widest;
1030 // }
1031 //
1032 // int EDL::calculate_output_h(int single_channel)
1033 // {
1034 //      if(single_channel) return session->output_h;
1035 //
1036 //      int tallest = 0;
1037 //      for(int i = 0; i < session->video_channels; i++)
1038 //      {
1039 //              if(session->vchannel_y[i] + session->output_h > tallest) tallest = session->vchannel_y[i] + session->output_h;
1040 //      }
1041 //      return tallest;
1042 // }
1043
1044 // Get the total output size scaled to aspect ratio
1045 void EDL::calculate_conformed_dimensions(int single_channel, float &w, float &h)
1046 {
1047         if((float)session->output_w / session->output_h > get_aspect_ratio())
1048                 h = (w = session->output_w) / get_aspect_ratio();
1049         else
1050                 w = (h = session->output_h) * get_aspect_ratio();
1051 }
1052
1053 float EDL::get_aspect_ratio()
1054 {
1055         return session->aspect_w / session->aspect_h;
1056 }
1057
1058 int EDL::dump(FILE *fp)
1059 {
1060         if(parent_edl)
1061                 fprintf(fp,"CLIP\n");
1062         else
1063                 fprintf(fp,"EDL\n");
1064         fprintf(fp,"  clip_title: %s\n"
1065                 "  parent_edl: %p\n", local_session->clip_title, parent_edl);
1066         fprintf(fp,"  selectionstart %f\n  selectionend %f\n  loop_start %f\n  loop_end %f\n",
1067                 local_session->get_selectionstart(1),
1068                 local_session->get_selectionend(1),
1069                 local_session->loop_start,
1070                 local_session->loop_end);
1071         for(int i = 0; i < TOTAL_PANES; i++)
1072         {
1073                 fprintf(fp,"  pane %d view_start=%jd track_start=%d\n", i,
1074                         local_session->view_start[i],
1075                         local_session->track_start[i]);
1076         }
1077
1078         if(!parent_edl)
1079         {
1080                 fprintf(fp,"audio_channels: %d audio_tracks: %d sample_rate: %jd\n",
1081                         session->audio_channels,
1082                         session->audio_tracks,
1083                         session->sample_rate);
1084                 fprintf(fp,"  video_channels: %d\n"
1085                         "  video_tracks: %d\n"
1086                         "  frame_rate: %.2f\n"
1087                         "  frames_per_foot: %.2f\n"
1088                         "  output_w: %d\n"
1089                         "  output_h: %d\n"
1090                         "  aspect_w: %f\n"
1091                         "  aspect_h: %f\n"
1092                         "  color_model: %d\n",
1093                                 session->video_channels,
1094                                 session->video_tracks,
1095                                 session->frame_rate,
1096                                 session->frames_per_foot,
1097                                 session->output_w,
1098                                 session->output_h,
1099                                 session->aspect_w,
1100                                 session->aspect_h,
1101                                 session->color_model);
1102
1103                 fprintf(fp," CLIPS\n");
1104                 fprintf(fp,"  total: %d\n", clips.total);
1105
1106                 for(int i = 0; i < clips.total; i++)
1107                 {
1108                         fprintf(fp,"\n\n");
1109                         clips.values[i]->dump(fp);
1110                         fprintf(fp,"\n\n");
1111                 }
1112
1113                 fprintf(fp," VWINDOW EDLS\n");
1114                 fprintf(fp,"  total: %d\n", total_vwindow_edls());
1115
1116                 for(int i = 0; i < total_vwindow_edls(); i++)
1117                 {
1118                         fprintf(fp,"   %s\n", get_vwindow_edl(i)->local_session->clip_title);
1119                 }
1120
1121                 fprintf(fp," ASSETS\n");
1122                 assets->dump(fp);
1123         }
1124         fprintf(fp," LABELS\n");
1125         labels->dump(fp);
1126         fprintf(fp," TRACKS\n");
1127         tracks->dump(fp);
1128 //printf("EDL::dump 2\n");
1129         return 0;
1130 }
1131
1132 EDL* EDL::add_clip(EDL *edl)
1133 {
1134 // Copy argument.  New edls are deleted from MWindow::load_filenames.
1135         EDL *new_edl = new EDL(this);
1136         new_edl->create_objects();
1137         new_edl->copy_all(edl);
1138         clips.append(new_edl);
1139         return new_edl;
1140 }
1141
1142 void EDL::insert_asset(Asset *asset,
1143         EDL *nested_edl,
1144         double position,
1145         Track *first_track,
1146         RecordLabels *labels)
1147 {
1148 // Insert asset into asset table
1149         Asset *new_asset = 0;
1150         EDL *new_nested_edl = 0;
1151
1152         if(asset) new_asset = assets->update(asset);
1153         if(nested_edl) new_nested_edl = nested_edls->get_copy(nested_edl);
1154
1155 // Paste video
1156         int vtrack = 0;
1157         Track *current = first_track ? first_track : tracks->first;
1158
1159
1160 // Fix length of single frame
1161         double length = 0.;
1162         int layers = 0;
1163         int channels = 0;
1164
1165         if(new_nested_edl)
1166         {
1167                 length = new_nested_edl->tracks->total_length();
1168                 layers = 1;
1169                 channels = new_nested_edl->session->audio_channels;
1170         }
1171
1172         if(new_asset)
1173         {
1174 // Insert 1 frame for undefined length
1175                 if(new_asset->video_length < 0)
1176                 {
1177                         length = session->si_useduration ?
1178                                 session->si_duration :
1179                                 1.0 / session->frame_rate;
1180                 }
1181                 else {
1182                         length = new_asset->frame_rate > 0 ?
1183                                 (double)new_asset->video_length / new_asset->frame_rate :
1184                                 1.0 / session->frame_rate;
1185                 }
1186                 layers = new_asset->layers;
1187                 channels = new_asset->channels;
1188         }
1189
1190         for( ;
1191                 current && vtrack < layers;
1192                 current = NEXT)
1193         {
1194                 if(!current->record ||
1195                         current->data_type != TRACK_VIDEO)
1196                         continue;
1197
1198                 current->insert_asset(new_asset,
1199                         new_nested_edl,
1200                         length,
1201                         position,
1202                         vtrack);
1203
1204                 vtrack++;
1205         }
1206
1207         int atrack = 0;
1208         if(new_asset)
1209         {
1210                 if(new_asset->audio_length < 0)
1211                 {
1212 // Insert 1 frame for undefined length & video
1213                         if(new_asset->video_data)
1214                                 length = (double)1.0 / new_asset->frame_rate;
1215                         else
1216 // Insert 1 second for undefined length & no video
1217                                 length = 1.0;
1218                 }
1219                 else
1220                         length = (double)new_asset->audio_length /
1221                                         new_asset->sample_rate;
1222         }
1223
1224         for(current = tracks->first;
1225                 current && atrack < channels;
1226                 current = NEXT)
1227         {
1228                 if(!current->record ||
1229                         current->data_type != TRACK_AUDIO)
1230                         continue;
1231
1232                 current->insert_asset(new_asset,
1233                         new_nested_edl,
1234                         length,
1235                         position,
1236                         atrack);
1237
1238
1239                 atrack++;
1240         }
1241
1242 // Insert labels from a recording window.
1243         if(labels)
1244         {
1245                 for(RecordLabel *label = labels->first; label; label = label->next)
1246                 {
1247                         this->labels->toggle_label(label->position, label->position);
1248                 }
1249         }
1250 }
1251
1252
1253
1254 void EDL::set_index_file(Indexable *indexable)
1255 {
1256         if(indexable->is_asset)
1257                 assets->update_index((Asset*)indexable);
1258         else
1259                 nested_edls->update_index((EDL*)indexable);
1260 }
1261
1262 void EDL::optimize()
1263 {
1264 //printf("EDL::optimize 1\n");
1265         if(local_session->preview_start < 0) local_session->preview_start = 0;
1266         double length = tracks->total_length();
1267         if(local_session->preview_end > length) local_session->preview_end = length;
1268         if(local_session->preview_start >= local_session->preview_end ) {
1269                 local_session->preview_start = 0;
1270                 local_session->preview_end = length;
1271         }
1272         for(Track *current = tracks->first; current; current = NEXT)
1273                 current->optimize();
1274 }
1275
1276 int EDL::next_id()
1277 {
1278         id_lock->lock("EDL::next_id");
1279         int result = EDLSession::current_id++;
1280         id_lock->unlock();
1281         return result;
1282 }
1283
1284 void EDL::get_shared_plugins(Track *source,
1285         ArrayList<SharedLocation*> *plugin_locations,
1286         int omit_recordable,
1287         int data_type)
1288 {
1289         for(Track *track = tracks->first; track; track = track->next)
1290         {
1291                 if(!track->record || !omit_recordable)
1292                 {
1293                         if(track != source &&
1294                                 track->data_type == data_type)
1295                         {
1296                                 for(int i = 0; i < track->plugin_set.total; i++)
1297                                 {
1298                                         Plugin *plugin = track->get_current_plugin(
1299                                                 local_session->get_selectionstart(1),
1300                                                 i,
1301                                                 PLAY_FORWARD,
1302                                                 1,
1303                                                 0);
1304                                         if(plugin && plugin->plugin_type == PLUGIN_STANDALONE)
1305                                         {
1306                                                 plugin_locations->append(new SharedLocation(tracks->number_of(track), i));
1307                                         }
1308                                 }
1309                         }
1310                 }
1311         }
1312 }
1313
1314 void EDL::get_shared_tracks(Track *track,
1315         ArrayList<SharedLocation*> *module_locations,
1316         int omit_recordable,
1317         int data_type)
1318 {
1319         for(Track *current = tracks->first; current; current = NEXT)
1320         {
1321                 if(!omit_recordable || !current->record)
1322                 {
1323                         if(current != track &&
1324                                 current->data_type == data_type)
1325                         {
1326                                 module_locations->append(new SharedLocation(tracks->number_of(current), 0));
1327                         }
1328                 }
1329         }
1330 }
1331
1332 // Convert position to frames if cursor alignment is enabled
1333 double EDL::align_to_frame(double position, int round)
1334 {
1335         if( session->cursor_on_frames && session->frame_rate > 0 ) {
1336                 double frame_no = position * session->frame_rate;
1337                 int64_t frame_pos = frame_no + (round ? 0.5 : 1e-6);
1338                 double pos = frame_pos / session->frame_rate;
1339                 if( !EQUIV(pos, position) ) position = pos;
1340         }
1341         return position;
1342 }
1343
1344
1345 void EDL::new_folder(const char *folder)
1346 {
1347         for(int i = 0; i < folders.total; i++)
1348         {
1349                 if(!strcasecmp(folders.values[i], folder)) return;
1350         }
1351
1352         char *new_folder;
1353         folders.append(new_folder = new char[strlen(folder) + 1]);
1354         strcpy(new_folder, folder);
1355 }
1356
1357 void EDL::delete_folder(const char *folder)
1358 {
1359         int i;
1360         for(i = 0; i < folders.total; i++)
1361         {
1362                 if(!strcasecmp(folders.values[i], folder))
1363                 {
1364                         break;
1365                 }
1366         }
1367
1368         if(i < folders.total) delete folders.values[i];
1369
1370         for( ; i < folders.total - 1; i++)
1371         {
1372                 folders.values[i] = folders.values[i + 1];
1373         }
1374 }
1375
1376 int EDL::get_use_vconsole(VEdit* *playable_edit,
1377         int64_t position,
1378         int direction,
1379         PlayableTracks *playable_tracks)
1380 {
1381         int share_playable_tracks = 1;
1382         int result = 0;
1383         VTrack *playable_track = 0;
1384         const int debug = 0;
1385         *playable_edit = 0;
1386
1387 // Calculate playable tracks when being called as a nested EDL
1388         if(!playable_tracks)
1389         {
1390                 share_playable_tracks = 0;
1391                 playable_tracks = new PlayableTracks(this,
1392                         position,
1393                         direction,
1394                         TRACK_VIDEO,
1395                         1);
1396         }
1397
1398
1399 // Total number of playable tracks is 1
1400         if(playable_tracks->size() != 1)
1401         {
1402                 result = 1;
1403         }
1404         else
1405         {
1406                 playable_track = (VTrack*)playable_tracks->get(0);
1407         }
1408
1409 // Don't need playable tracks anymore
1410         if(!share_playable_tracks)
1411         {
1412                 delete playable_tracks;
1413         }
1414
1415 if(debug) printf("EDL::get_use_vconsole %d playable_tracks->size()=%d\n",
1416 __LINE__,
1417 playable_tracks->size());
1418         if(result) return 1;
1419
1420
1421 // Test mutual conditions between direct copy rendering and this.
1422         if(!playable_track->direct_copy_possible(position,
1423                 direction,
1424                 1))
1425                 return 1;
1426 if(debug) printf("EDL::get_use_vconsole %d\n", __LINE__);
1427
1428         *playable_edit = (VEdit*)playable_track->edits->editof(position,
1429                 direction,
1430                 0);
1431 // No edit at current location
1432         if(!*playable_edit) return 1;
1433 if(debug) printf("EDL::get_use_vconsole %d\n", __LINE__);
1434
1435
1436 // Edit is nested EDL
1437         if((*playable_edit)->nested_edl)
1438         {
1439 // Test nested EDL
1440                 EDL *nested_edl = (*playable_edit)->nested_edl;
1441                 int64_t nested_position = (int64_t)((position -
1442                                 (*playable_edit)->startproject +
1443                                 (*playable_edit)->startsource) *
1444                         nested_edl->session->frame_rate /
1445                         session->frame_rate);
1446
1447
1448                 VEdit *playable_edit_temp = 0;
1449                 if(session->output_w != nested_edl->session->output_w ||
1450                         session->output_h != nested_edl->session->output_h ||
1451                         nested_edl->get_use_vconsole(&playable_edit_temp,
1452                                 nested_position,
1453                                 direction,
1454                                 0))
1455                         return 1;
1456
1457                 return 0;
1458         }
1459
1460 if(debug) printf("EDL::get_use_vconsole %d\n", __LINE__);
1461 // Edit is not a nested EDL
1462         Asset *asset = (*playable_edit)->asset;
1463 // Edit is silence
1464         if(!asset) return 1;
1465 if(debug) printf("EDL::get_use_vconsole %d\n", __LINE__);
1466
1467 // Asset and output device must have the same dimensions
1468         if( asset->width != session->output_w ||
1469             asset->height != session->output_h )
1470                 return 1;
1471
1472
1473 if(debug) printf("EDL::get_use_vconsole %d\n", __LINE__);
1474 // Asset and output device must have same resulting de-interlacing method
1475         if( ilaceautofixmethod2(session->interlace_mode,
1476             asset->interlace_autofixoption, asset->interlace_mode,
1477             asset->interlace_fixmethod) != ILACE_FIXMETHOD_NONE )
1478                 return 1;
1479
1480 // If we get here the frame is going to be directly copied.  Whether it is
1481 // decompressed in hardware depends on the colormodel.
1482         return 0;
1483 }
1484
1485
1486 // For Indexable
1487 int EDL::get_audio_channels()
1488 {
1489         return session->audio_channels;
1490 }
1491
1492 int EDL::get_sample_rate()
1493 {
1494         return session->sample_rate;
1495 }
1496
1497 int64_t EDL::get_audio_samples()
1498 {
1499         return (int64_t)(tracks->total_length() *
1500                 session->sample_rate);
1501 }
1502
1503 int EDL::have_audio()
1504 {
1505         return 1;
1506 }
1507
1508 int EDL::have_video()
1509 {
1510         return 1;
1511 }
1512
1513
1514 int EDL::get_w()
1515 {
1516         return session->output_w;
1517 }
1518
1519 int EDL::get_h()
1520 {
1521         return session->output_h;
1522 }
1523
1524 double EDL::get_frame_rate()
1525 {
1526         return session->frame_rate;
1527 }
1528
1529 int EDL::get_video_layers()
1530 {
1531         return 1;
1532 }
1533
1534 int64_t EDL::get_video_frames()
1535 {
1536         return (int64_t)(tracks->total_length() *
1537                 session->frame_rate);
1538 }
1539
1540
1541 void EDL::remove_vwindow_edls()
1542 {
1543         for(int i = 0; i < total_vwindow_edls(); i++)
1544         {
1545                 get_vwindow_edl(i)->Garbage::remove_user();
1546         }
1547         vwindow_edls.remove_all();
1548 }
1549
1550 void EDL::remove_vwindow_edl(EDL *edl)
1551 {
1552         if(vwindow_edls.number_of(edl) >= 0)
1553         {
1554                 edl->Garbage::remove_user();
1555
1556                 vwindow_edls.remove(edl);
1557         }
1558 }
1559
1560
1561 EDL* EDL::get_vwindow_edl(int number)
1562 {
1563         return vwindow_edls.get(number);
1564 }
1565
1566 int EDL::total_vwindow_edls()
1567 {
1568         return vwindow_edls.size();
1569 }
1570
1571 void EDL::append_vwindow_edl(EDL *edl, int increase_counter)
1572 {
1573         if(vwindow_edls.number_of(edl) >= 0) return;
1574
1575         if(increase_counter) edl->Garbage::add_user();
1576         vwindow_edls.append(edl);
1577 }
1578
1579
1580 double EDL::next_edit(double position)
1581 {
1582         Units::fix_double(&position);
1583         double new_position = tracks->total_length();
1584
1585         double max_rate = get_frame_rate();
1586         int sample_rate = get_sample_rate();
1587         if( sample_rate > max_rate ) max_rate = sample_rate;
1588         double min_movement = max_rate > 0 ? 1. / max_rate : 1e-6;
1589
1590 // Test for edit handles after position
1591         for( Track *track=tracks->first; track; track=track->next ) {
1592                 if( !track->record ) continue;
1593                 for( Edit *edit=track->edits->first; edit; edit=edit->next ) {
1594                         double edit_end = track->from_units(edit->startproject + edit->length);
1595                         Units::fix_double(&edit_end);
1596                         if( fabs(edit_end-position) < min_movement ) continue;
1597                         if( edit_end > position && edit_end < new_position )
1598                                 new_position = edit_end;
1599                 }
1600         }
1601         return new_position;
1602 }
1603
1604 double EDL::prev_edit(double position)
1605 {
1606         Units::fix_double(&position);
1607         double new_position = -1;
1608
1609         double max_rate = get_frame_rate();
1610         int sample_rate = get_sample_rate();
1611         if( sample_rate > max_rate ) max_rate = sample_rate;
1612         double min_movement = max_rate > 0 ? 1. / max_rate : 1e-6;
1613
1614 // Test for edit handles before cursor position
1615         for( Track *track=tracks->first; track; track=track->next ) {
1616                 if( !track->record ) continue;
1617                 for( Edit *edit=track->edits->first; edit; edit=edit->next ) {
1618                         double edit_end = track->from_units(edit->startproject);
1619                         Units::fix_double(&edit_end);
1620                         if( fabs(edit_end-position) < min_movement ) continue;
1621                         if( edit_end < position && edit_end > new_position )
1622                                 new_position = edit_end;
1623                 }
1624         }
1625         return new_position;
1626 }
1627