cinelerra-5.1/cinelerra/track.C

   1 /*
   2  * CINELERRA
   3  * Copyright (C) 2010 Adam Williams <broadcast at earthling dot net>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include "asset.h"
  22 #include "autoconf.h"
  23 #include "automation.h"
  24 #include "bcsignals.h"
  25 #include "clip.h"
  26 #include "edit.h"
  27 #include "edits.h"
  28 #include "edl.h"
  29 #include "edlsession.h"
  30 #include "filexml.h"
  31 #include "floatauto.h"
  32 #include "floatautos.h"
  33 #include "keyframe.h"
  34 #include "labels.h"
  35 #include "localsession.h"
  36 #include "module.h"
  37 #include "patch.h"
  38 #include "patchbay.h"
  39 #include "plugin.h"
  40 #include "pluginset.h"
  41 #include "mainsession.h"
  42 #include "theme.h"
  43 #include "intautos.h"
  44 #include "track.h"
  45 #include "trackcanvas.h"
  46 #include "tracks.h"
  47 #include "transition.h"
  48 #include "transportque.inc"
  49 #include "vedit.h"
  50 #include "vframe.h"
  51 #include <string.h>
  52
  53
  54 Track::Track(EDL *edl, Tracks *tracks) : ListItem<Track>()
  55 {
  56         this->edl = edl;
  57         this->tracks = tracks;
  58         y_pixel = 0;
  59         expand_view = 0;
  60         draw = 1;
  61         gang = 1;
  62         title[0] = 0;
  63         record = 1;
  64         play = 1;
  65         nudge = 0;
  66         track_w = edl->session->output_w;
  67         track_h = edl->session->output_h;
  68         id = EDL::next_id();
  69 }
  70
  71 Track::~Track()
  72 {
  73         delete automation;
  74         delete edits;
  75         plugin_set.remove_all_objects();
  76 }
  77
  78 void Track::create_objects()
  79 {
  80 }
  81
  82
  83 int Track::copy_settings(Track *track)
  84 {
  85         this->expand_view = track->expand_view;
  86         this->draw = track->draw;
  87         this->gang = track->gang;
  88         this->record = track->record;
  89         this->nudge = track->nudge;
  90         this->play = track->play;
  91         this->track_w = track->track_w;
  92         this->track_h = track->track_h;
  93         strcpy(this->title, track->title);
  94         return 0;
  95 }
  96
  97 int Track::get_id()
  98 {
  99         return id;
 100 }
 101
 102
 103 int Track::load_defaults(BC_Hash *defaults)
 104 {
 105         return 0;
 106 }
 107
 108 void Track::equivalent_output(Track *track, double *result)
 109 {
 110         if(data_type != track->data_type ||
 111                 track_w != track->track_w ||
 112                 track_h != track->track_h ||
 113                 play != track->play ||
 114                 nudge != track->nudge)
 115                 *result = 0;
 116
 117 // Convert result to track units
 118         int64_t result2 = -1;
 119         automation->equivalent_output(track->automation, &result2);
 120         edits->equivalent_output(track->edits, &result2);
 121
 122         int plugin_sets = MIN(plugin_set.total, track->plugin_set.total);
 123 // Test existing plugin sets
 124         for(int i = 0; i < plugin_sets; i++)
 125         {
 126                 plugin_set.values[i]->equivalent_output(
 127                         track->plugin_set.values[i],
 128                         &result2);
 129         }
 130
 131 // New EDL has more plugin sets.  Get starting plugin in new plugin sets
 132         for(int i = plugin_sets; i < plugin_set.total; i++)
 133         {
 134                 Plugin *current = plugin_set.values[i]->get_first_plugin();
 135                 if(current)
 136                 {
 137                         if(result2 < 0 || current->startproject < result2)
 138                                 result2 = current->startproject;
 139                 }
 140         }
 141
 142 // New EDL has fewer plugin sets.  Get starting plugin in old plugin set
 143         for(int i = plugin_sets; i < track->plugin_set.total; i++)
 144         {
 145                 Plugin *current = track->plugin_set.values[i]->get_first_plugin();
 146                 if(current)
 147                 {
 148                         if(result2 < 0 || current->startproject < result2)
 149                                 result2 = current->startproject;
 150                 }
 151         }
 152
 153 // Number of plugin sets differs but somehow we didn't find the start of the
 154 // change.  Assume 0
 155         if(track->plugin_set.total != plugin_set.total && result2 < 0)
 156                 result2 = 0;
 157
 158         if(result2 >= 0 &&
 159                 (*result < 0 || from_units(result2) < *result))
 160                 *result = from_units(result2);
 161 }
 162
 163
 164 int Track::is_synthesis(int64_t position,
 165         int direction)
 166 {
 167         int is_synthesis = 0;
 168         for(int i = 0; i < plugin_set.total; i++)
 169         {
 170                 Plugin *plugin = get_current_plugin(position,
 171                         i,
 172                         direction,
 173                         0,
 174                         0);
 175                 if(plugin)
 176                 {
 177 // Assume data from a shared track is synthesized
 178                         if(plugin->plugin_type == PLUGIN_SHAREDMODULE)
 179                                 is_synthesis = 1;
 180                         else
 181                                 is_synthesis = plugin->is_synthesis(position,
 182                                         direction);
 183
 184 //printf("Track::is_synthesis %d %d\n", __LINE__, is_synthesis);
 185                         if(is_synthesis) break;
 186                 }
 187         }
 188         return is_synthesis;
 189 }
 190
 191 void Track::copy_from(Track *track)
 192 {
 193         copy_settings(track);
 194         edits->copy_from(track->edits);
 195         for(int i = 0; i < this->plugin_set.total; i++)
 196                 delete this->plugin_set.values[i];
 197         this->plugin_set.remove_all_objects();
 198
 199         for(int i = 0; i < track->plugin_set.total; i++)
 200         {
 201                 PluginSet *new_plugin_set = plugin_set.append(new PluginSet(edl, this));
 202                 new_plugin_set->copy_from(track->plugin_set.values[i]);
 203         }
 204         automation->copy_from(track->automation);
 205         this->track_w = track->track_w;
 206         this->track_h = track->track_h;
 207 }
 208
 209 Track& Track::operator=(Track& track)
 210 {
 211 printf("Track::operator= 1\n");
 212         copy_from(&track);
 213         return *this;
 214 }
 215
 216 int Track::vertical_span(Theme *theme)
 217 {
 218         int result = 0;
 219         if(expand_view)
 220                 result = edl->local_session->zoom_track +
 221                         plugin_set.total *
 222                         theme->get_image("plugin_bg_data")->get_h();
 223         else
 224                 result = edl->local_session->zoom_track;
 225
 226         if(edl->session->show_titles)
 227                 result += theme->get_image("title_bg_data")->get_h();
 228
 229         return result;
 230 }
 231
 232 double Track::get_length()
 233 {
 234         double total_length = 0;
 235         double length = 0;
 236
 237 // Test edits
 238         if(edits->last)
 239         {
 240                 length = from_units(edits->last->startproject + edits->last->length);
 241                 if(length > total_length) total_length = length;
 242         }
 243
 244 // Test plugins
 245         for(int i = 0; i < plugin_set.total; i++)
 246         {
 247                 if( !plugin_set.values[i]->last ) continue;
 248                 length = from_units(plugin_set.values[i]->last->startproject +
 249                         plugin_set.values[i]->last->length);
 250                 if(length > total_length) total_length = length;
 251         }
 252
 253 // Test keyframes
 254         length = from_units(automation->get_length());
 255         if(length > total_length) total_length = length;
 256
 257
 258         return total_length;
 259 }
 260
 261 int Track::has_speed()
 262 {
 263         FloatAutos *autos = (FloatAutos*)automation->autos[AUTOMATION_SPEED];
 264         if(autos)
 265         {
 266                 if(autos->first)
 267                 {
 268                         for(FloatAuto *current = (FloatAuto*)autos->first;
 269                                 current;
 270                                 current = (FloatAuto*)current->next)
 271                         {
 272                                 if(!EQUIV(current->get_value(), 1.0) ||
 273                                         !EQUIV(current->get_control_in_value(), 0.0) ||
 274                                         !EQUIV(current->get_control_out_value(), 0.0))
 275                                 {
 276                                         return 1;
 277                                 }
 278                         }
 279                 }
 280         }
 281
 282         return 0;
 283 }
 284
 285
 286
 287 void Track::get_source_dimensions(double position, int &w, int &h)
 288 {
 289         int64_t native_position = to_units(position, 0);
 290         for(Edit *current = edits->first; current; current = NEXT)
 291         {
 292                 if(current->startproject <= native_position &&
 293                         current->startproject + current->length > native_position &&
 294                         current->asset)
 295                 {
 296                         w = current->asset->width;
 297                         h = current->asset->height;
 298                         return;
 299                 }
 300         }
 301 }
 302
 303
 304 int64_t Track::horizontal_span()
 305 {
 306         return (int64_t)(get_length() *
 307                 edl->session->sample_rate /
 308                 edl->local_session->zoom_sample +
 309                 0.5);
 310 }
 311
 312
 313 int Track::load(FileXML *file, int track_offset, uint32_t load_flags)
 314 {
 315         int result = 0;
 316         int current_plugin = 0;
 317
 318
 319         record = file->tag.get_property("RECORD", record);
 320         play = file->tag.get_property("PLAY", play);
 321         gang = file->tag.get_property("GANG", gang);
 322         draw = file->tag.get_property("DRAW", draw);
 323         nudge = file->tag.get_property("NUDGE", nudge);
 324         expand_view = file->tag.get_property("EXPAND", expand_view);
 325         track_w = file->tag.get_property("TRACK_W", track_w);
 326         track_h = file->tag.get_property("TRACK_H", track_h);
 327
 328         load_header(file, load_flags);
 329
 330         do{
 331                 result = file->read_tag();
 332
 333                 if(!result)
 334                 {
 335                         if(file->tag.title_is("/TRACK"))
 336                         {
 337                                 result = 1;
 338                         }
 339                         else
 340                         if(file->tag.title_is("TITLE"))
 341                         {
 342                                 file->read_text_until("/TITLE", title, BCTEXTLEN);
 343                         }
 344                         else
 345                         if(load_flags && automation->load(file)
 346                         /* strstr(file->tag.get_title(), "AUTOS") */)
 347                         {
 348                                 ;
 349                         }
 350                         else
 351                         if(file->tag.title_is("EDITS"))
 352                         {
 353                                 if(load_flags & LOAD_EDITS)
 354                                         edits->load(file, track_offset);
 355                         }
 356                         else
 357                         if(file->tag.title_is("PLUGINSET"))
 358                         {
 359                                 if(load_flags & LOAD_EDITS)
 360                                 {
 361                                         PluginSet *plugin_set = new PluginSet(edl, this);
 362                                         this->plugin_set.append(plugin_set);
 363                                         plugin_set->load(file, load_flags);
 364                                 }
 365                                 else
 366                                 if(load_flags & LOAD_AUTOMATION)
 367                                 {
 368                                         if(current_plugin < this->plugin_set.total)
 369                                         {
 370                                                 PluginSet *plugin_set = this->plugin_set.values[current_plugin];
 371                                                 plugin_set->load(file, load_flags);
 372                                                 current_plugin++;
 373                                         }
 374                                 }
 375                         }
 376                         else
 377                                 load_derived(file, load_flags);
 378                 }
 379         }while(!result);
 380
 381
 382
 383         return 0;
 384 }
 385
 386 void Track::insert_asset(Asset *asset,
 387         EDL *nested_edl,
 388         double length,
 389         double position,
 390         int track_number)
 391 {
 392         edits->insert_asset(asset,
 393                 nested_edl,
 394                 to_units(length, 1),
 395                 to_units(position, 0),
 396                 track_number);
 397 }
 398
 399 // Insert data
 400
 401 // Default keyframes: We don't replace default keyframes in pasting but
 402 // when inserting the first EDL of a load operation we need to replace
 403 // the default keyframes.
 404
 405 // Plugins:  This is an arbitrary behavior
 406 //
 407 // 1) No plugin in source track: Paste silence into destination
 408 // plugin sets.
 409 // 2) Plugin in source track: plugin in source track is inserted into
 410 // existing destination track plugin sets, new sets being added when
 411 // necessary.
 412
 413 void Track::insert_track(Track *track,
 414         double position,
 415         int replace_default,
 416         int edit_plugins,
 417         int edit_autos,
 418         double edl_length)
 419 {
 420 // Calculate minimum length of data to pad.
 421         int64_t min_length = to_units(
 422                 MAX(edl_length, track->get_length()),
 423                 1);
 424 //printf("Track::insert_track %d %s %jd\n", __LINE__, title, min_length);
 425
 426 // Decide whether to copy settings based on load_mode
 427         if(replace_default) copy_settings(track);
 428
 429         edits->insert_edits(track->edits,
 430                 to_units(position, 0),
 431                 min_length,
 432                 edit_autos);
 433
 434         if(edit_plugins)
 435                 insert_plugin_set(track,
 436                         to_units(position, 0),
 437                         min_length,
 438                         edit_autos);
 439
 440         if(edit_autos)
 441                 automation->insert_track(track->automation,
 442                         to_units(position, 0),
 443                         min_length,
 444                         replace_default);
 445
 446         optimize();
 447
 448 }
 449
 450 // Called by insert_track
 451 void Track::insert_plugin_set(Track *track,
 452         int64_t position,
 453         int64_t min_length,
 454         int edit_autos)
 455 {
 456 // Extend plugins if no incoming plugins
 457         if(!track->plugin_set.total)
 458         {
 459                 shift_effects(position,
 460                         min_length,
 461                         edit_autos);
 462         }
 463         else
 464         for(int i = 0; i < track->plugin_set.total; i++)
 465         {
 466                 if(i >= plugin_set.total)
 467                         plugin_set.append(new PluginSet(edl, this));
 468
 469                 plugin_set.values[i]->insert_edits(track->plugin_set.values[i],
 470                         position,
 471                         min_length,
 472                         edit_autos);
 473         }
 474 }
 475
 476
 477 Plugin* Track::insert_effect(const char *title,
 478                 SharedLocation *shared_location,
 479                 KeyFrame *default_keyframe,
 480                 PluginSet *plugin_set,
 481                 double start,
 482                 double length,
 483                 int plugin_type)
 484 {
 485         if(!plugin_set)
 486         {
 487                 plugin_set = new PluginSet(edl, this);
 488                 this->plugin_set.append(plugin_set);
 489         }
 490
 491         Plugin *plugin = 0;
 492
 493 // Position is identical to source plugin
 494         if(plugin_type == PLUGIN_SHAREDPLUGIN)
 495         {
 496                 Track *source_track = tracks->get_item_number(shared_location->module);
 497                 if(source_track)
 498                 {
 499                         Plugin *source_plugin = source_track->get_current_plugin(
 500                                 edl->local_session->get_selectionstart(),
 501                                 shared_location->plugin,
 502                                 PLAY_FORWARD,
 503                                 1,
 504                                 0);
 505
 506 // From an attach operation
 507                         if(source_plugin)
 508                         {
 509                                 plugin = plugin_set->insert_plugin(title,
 510                                         source_plugin->startproject,
 511                                         source_plugin->length,
 512                                         plugin_type,
 513                                         shared_location,
 514                                         default_keyframe,
 515                                         1);
 516                         }
 517                         else
 518 // From a drag operation
 519                         {
 520                                 plugin = plugin_set->insert_plugin(title,
 521                                         to_units(start, 0),
 522                                         to_units(length, 1),
 523                                         plugin_type,
 524                                         shared_location,
 525                                         default_keyframe,
 526                                         1);
 527                         }
 528                 }
 529         }
 530         else
 531         {
 532 // This should be done in the caller
 533                 if(EQUIV(length, 0))
 534                 {
 535                         if(edl->local_session->get_selectionend() >
 536                                 edl->local_session->get_selectionstart())
 537                         {
 538                                 start = edl->local_session->get_selectionstart();
 539                                 length = edl->local_session->get_selectionend() - start;
 540                         }
 541                         else
 542                         {
 543                                 start = 0;
 544                                 length = get_length();
 545                         }
 546                 }
 547 //printf("Track::insert_effect %f %f %d %d\n", start, length, to_units(start, 0),
 548 //                      to_units(length, 0));
 549
 550                 plugin = plugin_set->insert_plugin(title,
 551                         to_units(start, 0),
 552                         to_units(length, 1),
 553                         plugin_type,
 554                         shared_location,
 555                         default_keyframe,
 556                         1);
 557         }
 558 //printf("Track::insert_effect 2 %f %f\n", start, length);
 559
 560         expand_view = 1;
 561         return plugin;
 562 }
 563
 564 void Track::move_plugins_up(PluginSet *plugin_set)
 565 {
 566         for(int i = 0; i < this->plugin_set.total; i++)
 567         {
 568                 if(this->plugin_set.values[i] == plugin_set)
 569                 {
 570                         if(i == 0) break;
 571
 572                         PluginSet *temp = this->plugin_set.values[i - 1];
 573                         this->plugin_set.values[i - 1] = this->plugin_set.values[i];
 574                         this->plugin_set.values[i] = temp;
 575
 576                         SharedLocation old_location, new_location;
 577                         new_location.module = old_location.module = tracks->number_of(this);
 578                         old_location.plugin = i;
 579                         new_location.plugin = i - 1;
 580                         tracks->change_plugins(old_location, new_location, 1);
 581                         break;
 582                 }
 583         }
 584 }
 585
 586 void Track::move_plugins_down(PluginSet *plugin_set)
 587 {
 588         for(int i = 0; i < this->plugin_set.total; i++)
 589         {
 590                 if(this->plugin_set.values[i] == plugin_set)
 591                 {
 592                         if(i == this->plugin_set.total - 1) break;
 593
 594                         PluginSet *temp = this->plugin_set.values[i + 1];
 595                         this->plugin_set.values[i + 1] = this->plugin_set.values[i];
 596                         this->plugin_set.values[i] = temp;
 597
 598                         SharedLocation old_location, new_location;
 599                         new_location.module = old_location.module = tracks->number_of(this);
 600                         old_location.plugin = i;
 601                         new_location.plugin = i + 1;
 602                         tracks->change_plugins(old_location, new_location, 1);
 603                         break;
 604                 }
 605         }
 606 }
 607
 608
 609 void Track::remove_asset(Indexable *asset)
 610 {
 611         for(Edit *edit = edits->first; edit; edit = edit->next)
 612         {
 613                 if(asset->is_asset &&
 614                         edit->asset &&
 615                         edit->asset == (Asset*)asset)
 616                 {
 617                         edit->asset = 0;
 618                 }
 619                 else
 620                 if(!asset->is_asset &&
 621                         edit->nested_edl &&
 622                         edit->nested_edl == (EDL*)asset)
 623                 {
 624                         edit->nested_edl = 0;
 625                 }
 626         }
 627         optimize();
 628 }
 629
 630 void Track::remove_pluginset(PluginSet *plugin_set)
 631 {
 632         int i;
 633         for(i = 0; i < this->plugin_set.total; i++)
 634                 if(plugin_set == this->plugin_set.values[i]) break;
 635
 636         this->plugin_set.remove_object(plugin_set);
 637         for(i++ ; i < this->plugin_set.total; i++)
 638         {
 639                 SharedLocation old_location, new_location;
 640                 new_location.module = old_location.module = tracks->number_of(this);
 641                 old_location.plugin = i;
 642                 new_location.plugin = i - 1;
 643                 tracks->change_plugins(old_location, new_location, 0);
 644         }
 645 }
 646
 647 void Track::shift_keyframes(int64_t position, int64_t length)
 648 {
 649         automation->paste_silence(position, position + length);
 650 // Effect keyframes are shifted in shift_effects
 651 }
 652
 653 void Track::shift_effects(int64_t position, int64_t length, int edit_autos)
 654 {
 655         for(int i = 0; i < plugin_set.total; i++)
 656         {
 657                 plugin_set.values[i]->shift_effects(position, length, edit_autos);
 658         }
 659 }
 660
 661 void Track::detach_effect(Plugin *plugin)
 662 {
 663 //printf("Track::detach_effect 1\n");
 664         for(int i = 0; i < plugin_set.total; i++)
 665         {
 666                 PluginSet *plugin_set = this->plugin_set.values[i];
 667                 for(Plugin *dest = (Plugin*)plugin_set->first;
 668                         dest;
 669                         dest = (Plugin*)dest->next)
 670                 {
 671                         if(dest == plugin)
 672                         {
 673                                 int64_t start = plugin->startproject;
 674                                 int64_t end = plugin->startproject + plugin->length;
 675
 676                                 plugin_set->clear(start, end, 1);
 677                                 optimize();
 678 //printf("Track::detach_effect 2 %d\n", plugin_set->length());
 679 // Delete 0 length pluginsets
 680                                 return;
 681                         }
 682                 }
 683         }
 684 }
 685
 686 void Track::resample(double old_rate, double new_rate)
 687 {
 688         edits->resample(old_rate, new_rate);
 689         automation->resample(old_rate, new_rate);
 690         for(int i = 0; i < plugin_set.total; i++)
 691                 plugin_set.values[i]->resample(old_rate, new_rate);
 692         nudge = (int64_t)(nudge * new_rate / old_rate);
 693 }
 694
 695 void Track::detach_shared_effects(int module)
 696 {
 697         for(int i = 0; i < plugin_set.size(); i++) {
 698                 PluginSet *plugin_set = this->plugin_set.get(i);
 699                 for(Plugin *dest = (Plugin*)plugin_set->first; dest; ) {
 700                         if( (dest->plugin_type == PLUGIN_SHAREDPLUGIN ||
 701                                 dest->plugin_type == PLUGIN_SHAREDMODULE) &&
 702                                 dest->shared_location.module == module ) {
 703                                 int64_t start = dest->startproject;
 704                                 int64_t end = dest->startproject + dest->length;
 705                                 plugin_set->clear(start, end, 1);
 706                         }
 707
 708                         if(dest) dest = (Plugin*)dest->next;
 709                 }
 710         }
 711         optimize();
 712 }
 713
 714
 715 void Track::optimize()
 716 {
 717         edits->optimize();
 718         for(int i = 0; i < plugin_set.total; ) {
 719                 PluginSet *plugin_set = this->plugin_set.values[i];
 720                 plugin_set->optimize();
 721 //printf("Track::optimize %d\n", plugin_set.values[i]->total());
 722 // new definition of empty track...
 723                 if( !plugin_set->last ||
 724                     (plugin_set->last == plugin_set->first &&
 725                      plugin_set->last->silence()) ) {
 726                         remove_pluginset(plugin_set);
 727                         continue;
 728                 }
 729                 ++i;
 730         }
 731 }
 732
 733 Plugin* Track::get_current_plugin(double position,
 734         int plugin_set,
 735         int direction,
 736         int convert_units,
 737         int use_nudge)
 738 {
 739         Plugin *current;
 740         if(convert_units) position = to_units(position, 0);
 741         if(use_nudge) position += nudge;
 742
 743         if(plugin_set >= this->plugin_set.total || plugin_set < 0) return 0;
 744
 745 //printf("Track::get_current_plugin 1 %d %d %d\n", position, this->plugin_set.total, direction);
 746         if(direction == PLAY_FORWARD)
 747         {
 748                 for(current = (Plugin*)this->plugin_set.values[plugin_set]->last;
 749                         current;
 750                         current = (Plugin*)PREVIOUS)
 751                 {
 752 // printf("Track::get_current_plugin 2 %d %ld %ld\n",
 753 // current->startproject,
 754 // current->startproject + current->length,
 755 // position);
 756                         if(current->startproject <= position &&
 757                                 current->startproject + current->length > position)
 758                         {
 759                                 return current;
 760                         }
 761                 }
 762         }
 763         else
 764         if(direction == PLAY_REVERSE)
 765         {
 766                 for(current = (Plugin*)this->plugin_set.values[plugin_set]->first;
 767                         current;
 768                         current = (Plugin*)NEXT)
 769                 {
 770                         if(current->startproject < position &&
 771                                 current->startproject + current->length >= position)
 772                         {
 773                                 return current;
 774                         }
 775                 }
 776         }
 777
 778         return 0;
 779 }
 780
 781 Plugin* Track::get_current_transition(double position,
 782         int direction,
 783         int convert_units,
 784         int use_nudge)
 785 {
 786         Edit *current;
 787         Plugin *result = 0;
 788         if(convert_units) position = to_units(position, 0);
 789         if(use_nudge) position += nudge;
 790
 791         if(direction == PLAY_FORWARD)
 792         {
 793                 for(current = edits->last; current; current = PREVIOUS)
 794                 {
 795                         if(current->startproject <= position && current->startproject + current->length > position)
 796                         {
 797 //printf("Track::get_current_transition %p\n", current->transition);
 798                                 if(current->transition && position < current->startproject + current->transition->length)
 799                                 {
 800                                         result = current->transition;
 801                                         break;
 802                                 }
 803                         }
 804                 }
 805         }
 806         else
 807         if(direction == PLAY_REVERSE)
 808         {
 809                 for(current = edits->first; current; current = NEXT)
 810                 {
 811                         if(current->startproject < position && current->startproject + current->length >= position)
 812                         {
 813                                 if(current->transition && position <= current->startproject + current->transition->length)
 814                                 {
 815                                         result = current->transition;
 816                                         break;
 817                                 }
 818                         }
 819                 }
 820         }
 821
 822         return result;
 823 }
 824
 825 void Track::synchronize_params(Track *track)
 826 {
 827         for(Edit *this_edit = edits->first, *that_edit = track->edits->first;
 828                 this_edit && that_edit;
 829                 this_edit = this_edit->next, that_edit = that_edit->next)
 830         {
 831                 this_edit->synchronize_params(that_edit);
 832         }
 833
 834         for(int i = 0; i < plugin_set.total && i < track->plugin_set.total; i++)
 835                 plugin_set.values[i]->synchronize_params(track->plugin_set.values[i]);
 836
 837         automation->copy_from(track->automation);
 838         this->nudge = track->nudge;
 839 }
 840
 841
 842
 843
 844
 845 int Track::dump(FILE *fp)
 846 {
 847         fprintf(fp,"   Data type %d\n", data_type);
 848         fprintf(fp,"   Title %s\n", title);
 849         fprintf(fp,"   Edits:\n");
 850         for(Edit* current = edits->first; current; current = NEXT)
 851         {
 852                 current->dump(fp);
 853         }
 854         automation->dump(fp);
 855         fprintf(fp,"   Plugin Sets: %d\n", plugin_set.total);
 856
 857         for(int i = 0; i < plugin_set.total; i++)
 858                 plugin_set.values[i]->dump(fp);
 859 //printf("Track::dump 2\n");
 860         return 0;
 861 }
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883 Track::Track() : ListItem<Track>()
 884 {
 885         y_pixel = 0;
 886 }
 887
 888 // ======================================== accounting
 889
 890 int Track::number_of()
 891 {
 892         return tracks->number_of(this);
 893 }
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907 // ================================================= editing
 908
 909 int Track::select_auto(AutoConf *auto_conf, int cursor_x, int cursor_y)
 910 {
 911         return 0;
 912 }
 913
 914 int Track::move_auto(AutoConf *auto_conf, int cursor_x, int cursor_y, int shift_down)
 915 {
 916         return 0;
 917 }
 918
 919 int Track::release_auto()
 920 {
 921         return 0;
 922 }
 923
 924 // used for copying automation alone
 925 int Track::copy_automation(double selectionstart,
 926         double selectionend,
 927         FileXML *file,
 928         int default_only,
 929         int active_only)
 930 {
 931         int64_t start = to_units(selectionstart, 0);
 932         int64_t end = to_units(selectionend, 1);
 933
 934         file->tag.set_title("TRACK");
 935 // Video or audio
 936     save_header(file);
 937         file->append_tag();
 938         file->append_newline();
 939
 940         automation->copy(start, end, file, default_only, active_only);
 941
 942         if(edl->session->auto_conf->plugins)
 943         {
 944                 for(int i = 0; i < plugin_set.total; i++)
 945                 {
 946
 947                         plugin_set.values[i]->copy_keyframes(start,
 948                                 end,
 949                                 file,
 950                                 default_only,
 951                                 active_only);
 952                 }
 953         }
 954
 955         file->tag.set_title("/TRACK");
 956         file->append_tag();
 957         file->append_newline();
 958         file->append_newline();
 959         file->append_newline();
 960         file->append_newline();
 961
 962         return 0;
 963 }
 964
 965 int Track::paste_automation(double selectionstart,
 966         double total_length,
 967         double frame_rate,
 968         int64_t sample_rate,
 969         FileXML *file,
 970         int default_only,
 971         int active_only)
 972 {
 973 // Only used for pasting automation alone.
 974         int64_t start;
 975         int64_t length;
 976         int result;
 977         double scale;
 978         int current_pluginset;
 979
 980         if(data_type == TRACK_AUDIO)
 981                 scale = edl->session->sample_rate / sample_rate;
 982         else
 983                 scale = edl->session->frame_rate / frame_rate;
 984
 985         total_length *= scale;
 986         start = to_units(selectionstart, 0);
 987         length = to_units(total_length, 1);
 988         result = 0;
 989         current_pluginset = 0;
 990 //printf("Track::paste_automation 1\n");
 991
 992         while(!result)
 993         {
 994                 result = file->read_tag();
 995
 996                 if(!result)
 997                 {
 998                         if(file->tag.title_is("/TRACK"))
 999                                 result = 1;
1000                         else
1001                         if(automation->paste(start, length, scale, file,
1002                                         default_only, active_only, 0)) {}
1003                         else if(file->tag.title_is("PLUGINSET")) {
1004                                 if(current_pluginset < plugin_set.total) {
1005                                         plugin_set.values[current_pluginset]->
1006                                                 paste_keyframes(start, length, file,
1007                                                 default_only, active_only);
1008                                         current_pluginset++;
1009                                 }
1010                         }
1011                 }
1012         }
1013
1014
1015         return 0;
1016 }
1017
1018 void Track::clear_automation(double selectionstart,
1019         double selectionend,
1020         int shift_autos,
1021         int default_only)
1022 {
1023         int64_t start = to_units(selectionstart, 0);
1024         int64_t end = to_units(selectionend, 1);
1025
1026         automation->clear(start, end, edl->session->auto_conf, 0);
1027
1028         if(edl->session->auto_conf->plugins)
1029         {
1030                 for(int i = 0; i < plugin_set.total; i++)
1031                 {
1032                         plugin_set.values[i]->clear_keyframes(start, end);
1033                 }
1034         }
1035
1036 }
1037
1038 void Track::set_automation_mode(double selectionstart,
1039         double selectionend,
1040         int mode)
1041 {
1042         int64_t start = to_units(selectionstart, 0);
1043         int64_t end = to_units(selectionend, 1);
1044
1045         automation->set_automation_mode(start, end, mode, edl->session->auto_conf);
1046 }
1047
1048
1049
1050
1051 int Track::copy(double start,
1052         double end,
1053         FileXML *file,
1054         const char *output_path)
1055 {
1056 // Use a copy of the selection in converted units
1057 // So copy_automation doesn't reconvert.
1058         int64_t start_unit = to_units(start, 0);
1059         int64_t end_unit = to_units(end, 1);
1060
1061
1062
1063
1064         file->tag.set_title("TRACK");
1065         file->tag.set_property("RECORD", record);
1066         file->tag.set_property("NUDGE", nudge);
1067         file->tag.set_property("PLAY", play);
1068         file->tag.set_property("GANG", gang);
1069         file->tag.set_property("DRAW", draw);
1070         file->tag.set_property("EXPAND", expand_view);
1071         file->tag.set_property("TRACK_W", track_w);
1072         file->tag.set_property("TRACK_H", track_h);
1073         save_header(file);
1074         file->append_tag();
1075         file->append_newline();
1076         save_derived(file);
1077
1078         file->tag.set_title("TITLE");
1079         file->append_tag();
1080         file->append_text(title);
1081         file->tag.set_title("/TITLE");
1082         file->append_tag();
1083         file->append_newline();
1084
1085 //      if(data_type == TRACK_AUDIO)
1086 //              file->tag.set_property("TYPE", "AUDIO");
1087 //      else
1088 //              file->tag.set_property("TYPE", "VIDEO");
1089 //
1090 //      file->append_tag();
1091 //      file->append_newline();
1092
1093         edits->copy(start_unit, end_unit, file, output_path);
1094
1095         AutoConf auto_conf;
1096         auto_conf.set_all(1);
1097         automation->copy(start_unit, end_unit, file, 0, 0);
1098
1099
1100         for(int i = 0; i < plugin_set.total; i++)
1101         {
1102                 plugin_set.values[i]->copy(start_unit, end_unit, file);
1103         }
1104
1105         copy_derived(start_unit, end_unit, file);
1106
1107         file->tag.set_title("/TRACK");
1108         file->append_tag();
1109         file->append_newline();
1110         file->append_newline();
1111         file->append_newline();
1112         file->append_newline();
1113
1114         return 0;
1115 }
1116
1117 int Track::copy_assets(double start,
1118         double end,
1119         ArrayList<Asset*> *asset_list)
1120 {
1121         int i, result = 0;
1122
1123         start = to_units(start, 0);
1124         end = to_units(end, 1);
1125
1126         Edit *current = edits->editof((int64_t)start, PLAY_FORWARD, 0);
1127
1128 // Search all edits
1129         while(current && current->startproject < end)
1130         {
1131 // Check for duplicate assets
1132                 if(current->asset)
1133                 {
1134                         for(i = 0, result = 0; i < asset_list->total; i++)
1135                         {
1136                                 if(asset_list->values[i] == current->asset) result = 1;
1137                         }
1138 // append pointer to new asset
1139                         if(!result) asset_list->append(current->asset);
1140                 }
1141
1142                 current = NEXT;
1143         }
1144
1145         return 0;
1146 }
1147
1148
1149
1150
1151
1152 int Track::clear(double start,
1153         double end,
1154         int edit_edits,
1155         int edit_labels,
1156         int edit_plugins,
1157         int edit_autos,
1158         int convert_units,
1159         Edits *trim_edits)
1160 {
1161 // Edits::move_auto calls this routine after the units are converted to the track
1162 // format.
1163 //printf("Track::clear 1 %d %d %d\n", edit_edits, edit_labels, edit_plugins);
1164         if(convert_units)
1165         {
1166                 start = to_units(start, 0);
1167                 end = to_units(end, 1);
1168         }
1169
1170
1171         if(edit_autos)
1172                 automation->clear((int64_t)start, (int64_t)end, 0, 1);
1173
1174         if(edit_plugins)
1175         {
1176                 for(int i = 0; i < plugin_set.total; i++)
1177                 {
1178                         if(!trim_edits || trim_edits == (Edits*)plugin_set.values[i])
1179                                 plugin_set.values[i]->clear((int64_t)start, (int64_t)end, edit_autos);
1180                 }
1181         }
1182
1183         if(edit_edits)
1184                 edits->clear((int64_t)start, (int64_t)end);
1185         return 0;
1186 }
1187
1188 int Track::clear_handle(double start,
1189         double end,
1190         int clear_labels,
1191         int clear_plugins,
1192         int edit_autos,
1193         double &distance)
1194 {
1195         edits->clear_handle(start, end, clear_plugins, edit_autos, distance);
1196         return 0;
1197 }
1198
1199 int Track::popup_transition(int cursor_x, int cursor_y)
1200 {
1201         return 0;
1202 }
1203
1204
1205
1206 int Track::modify_edithandles(double oldposition,
1207         double newposition,
1208         int currentend,
1209         int handle_mode,
1210         int edit_labels,
1211         int edit_plugins,
1212         int edit_autos)
1213 {
1214         edits->modify_handles(oldposition,
1215                 newposition,
1216                 currentend,
1217                 handle_mode,
1218                 1,
1219                 edit_labels,
1220                 edit_plugins,
1221                 edit_autos,
1222                 0);
1223
1224
1225         return 0;
1226 }
1227
1228 int Track::modify_pluginhandles(double oldposition,
1229         double newposition,
1230         int currentend,
1231         int handle_mode,
1232         int edit_labels,
1233         int edit_autos,
1234         Edits *trim_edits)
1235 {
1236         for(int i = 0; i < plugin_set.total; i++)
1237         {
1238                 if(!trim_edits || trim_edits == (Edits*)plugin_set.values[i])
1239                         plugin_set.values[i]->modify_handles(oldposition,
1240                                 newposition,
1241                                 currentend,
1242                                 handle_mode,
1243 // Don't allow plugin tweeks to affect edits.
1244                                 0,
1245                                 edit_labels,
1246                                 1,
1247                                 edit_autos,
1248                                 trim_edits);
1249         }
1250         return 0;
1251 }
1252
1253
1254 int Track::paste_silence(double start, double end, int edit_plugins, int edit_autos)
1255 {
1256         int64_t start_i = to_units(start, 0);
1257         int64_t end_i = to_units(end, 1);
1258
1259         edits->paste_silence(start_i, end_i);
1260         if(edit_autos) shift_keyframes(start_i, end_i - start_i);
1261         if(edit_plugins) shift_effects(start_i, end_i - start_i, edit_autos);
1262
1263         edits->optimize();
1264         return 0;
1265 }
1266
1267 int Track::select_edit(int cursor_x,
1268         int cursor_y,
1269         double &new_start,
1270         double &new_end)
1271 {
1272         return 0;
1273 }
1274
1275 int Track::scale_time(float rate_scale, int scale_edits, int scale_autos, int64_t start, int64_t end)
1276 {
1277         return 0;
1278 }
1279
1280 void Track::change_plugins(SharedLocation &old_location, SharedLocation &new_location, int do_swap)
1281 {
1282         for(int i = 0; i < plugin_set.total; i++)
1283         {
1284                 for(Plugin *plugin = (Plugin*)plugin_set.values[i]->first;
1285                         plugin;
1286                         plugin = (Plugin*)plugin->next)
1287                 {
1288                         if(plugin->plugin_type == PLUGIN_SHAREDPLUGIN)
1289                         {
1290                                 if(plugin->shared_location == old_location)
1291                                         plugin->shared_location = new_location;
1292                                 else
1293                                 if(do_swap && plugin->shared_location == new_location)
1294                                         plugin->shared_location = old_location;
1295                         }
1296                 }
1297         }
1298 }
1299
1300 void Track::change_modules(int old_location, int new_location, int do_swap)
1301 {
1302         for(int i = 0; i < plugin_set.total; i++)
1303         {
1304                 for(Plugin *plugin = (Plugin*)plugin_set.values[i]->first;
1305                         plugin;
1306                         plugin = (Plugin*)plugin->next)
1307                 {
1308                         if(plugin->plugin_type == PLUGIN_SHAREDPLUGIN ||
1309                                 plugin->plugin_type == PLUGIN_SHAREDMODULE)
1310                         {
1311                                 if(plugin->shared_location.module == old_location)
1312                                         plugin->shared_location.module = new_location;
1313                                 else
1314                                 if(do_swap && plugin->shared_location.module == new_location)
1315                                         plugin->shared_location.module = old_location;
1316                         }
1317                 }
1318         }
1319 }
1320
1321
1322 int Track::playable_edit(int64_t position, int direction)
1323 {
1324         int result = 0;
1325         if(direction == PLAY_REVERSE) position--;
1326         for(Edit *current = edits->first; current && !result; current = NEXT)
1327         {
1328                 if(current->startproject <= position &&
1329                         current->startproject + current->length > position)
1330                 {
1331 //printf("Track::playable_edit %p %p\n", current->transition, current->asset);
1332                         if(current->transition ||
1333                                 current->asset ||
1334                                 current->nested_edl) result = 1;
1335                 }
1336         }
1337         return result;
1338 }
1339
1340
1341 int Track::need_edit(Edit *current, int test_transitions)
1342 {
1343         return ((test_transitions && current->transition) ||
1344                 (!test_transitions && current->asset));
1345 }
1346
1347 int64_t Track::plugin_change_duration(int64_t input_position,
1348         int64_t input_length,
1349         int reverse,
1350         int use_nudge)
1351 {
1352         if(use_nudge) input_position += nudge;
1353         for(int i = 0; i < plugin_set.total; i++)
1354         {
1355                 int64_t new_duration = plugin_set.values[i]->plugin_change_duration(
1356                         input_position,
1357                         input_length,
1358                         reverse);
1359                 if(new_duration < input_length) input_length = new_duration;
1360         }
1361         return input_length;
1362 }
1363
1364 int64_t Track::edit_change_duration(int64_t input_position,
1365         int64_t input_length,
1366         int reverse,
1367         int test_transitions,
1368         int use_nudge)
1369 {
1370         Edit *current;
1371         int64_t edit_length = input_length;
1372         if(use_nudge) input_position += nudge;
1373
1374         if(reverse)
1375         {
1376 // ================================= Reverse playback
1377 // Get first edit on or after position
1378                 for(current = edits->first;
1379                         current && current->startproject + current->length <= input_position;
1380                         current = NEXT)
1381                         ;
1382
1383                 if(current)
1384                 {
1385                         if(current->startproject > input_position)
1386                         {
1387 // Before first edit
1388                                 ;
1389                         }
1390                         else
1391                         if(need_edit(current, test_transitions))
1392                         {
1393 // Over an edit of interest.
1394                                 if(input_position - current->startproject < input_length)
1395                                         edit_length = input_position - current->startproject + 1;
1396                         }
1397                         else
1398                         {
1399 // Over an edit that isn't of interest.
1400 // Search for next edit of interest.
1401                                 for(current = PREVIOUS ;
1402                                         current &&
1403                                         current->startproject + current->length > input_position - input_length &&
1404                                         !need_edit(current, test_transitions);
1405                                         current = PREVIOUS)
1406                                         ;
1407
1408                                         if(current &&
1409                                                 need_edit(current, test_transitions) &&
1410                                                 current->startproject + current->length > input_position - input_length)
1411                         edit_length = input_position - current->startproject - current->length + 1;
1412                         }
1413                 }
1414                 else
1415                 {
1416 // Not over an edit.  Try the last edit.
1417                         current = edits->last;
1418                         if(current &&
1419                                 ((test_transitions && current->transition) ||
1420                                 (!test_transitions && current->asset)))
1421                                 edit_length = input_position - edits->length() + 1;
1422                 }
1423         }
1424         else
1425         {
1426 // =================================== forward playback
1427 // Get first edit on or before position
1428                 for(current = edits->last;
1429                         current && current->startproject > input_position;
1430                         current = PREVIOUS)
1431                         ;
1432
1433                 if(current)
1434                 {
1435                         if(current->startproject + current->length <= input_position)
1436                         {
1437 // Beyond last edit.
1438                                 ;
1439                         }
1440                         else
1441                         if(need_edit(current, test_transitions))
1442                         {
1443 // Over an edit of interest.
1444 // Next edit is going to require a change.
1445                                 if(current->length + current->startproject - input_position < input_length)
1446                                         edit_length = current->startproject + current->length - input_position;
1447                         }
1448                         else
1449                         {
1450 // Over an edit that isn't of interest.
1451 // Search for next edit of interest.
1452                                 for(current = NEXT ;
1453                                         current &&
1454                                         current->startproject < input_position + input_length &&
1455                                         !need_edit(current, test_transitions);
1456                                         current = NEXT)
1457                                         ;
1458
1459                                         if(current &&
1460                                                 need_edit(current, test_transitions) &&
1461                                                 current->startproject < input_position + input_length)
1462                                                 edit_length = current->startproject - input_position;
1463                         }
1464                 }
1465                 else
1466                 {
1467 // Not over an edit.  Try the first edit.
1468                         current = edits->first;
1469                         if(current &&
1470                                 ((test_transitions && current->transition) ||
1471                                 (!test_transitions && current->asset)))
1472                                 edit_length = edits->first->startproject - input_position;
1473                 }
1474         }
1475
1476         if(edit_length < input_length)
1477                 return edit_length;
1478         else
1479                 return input_length;
1480 }
1481
1482 void Track::shuffle_edits(double start, double end, int first_track)
1483 {
1484         ArrayList<Edit*> new_edits;
1485         ArrayList<Label*> new_labels;
1486         int64_t start_units = to_units(start, 0);
1487         int64_t end_units = to_units(end, 0);
1488 // Sample range of all edits selected
1489         //int64_t total_start_units = 0;
1490         //int64_t total_end_units = 0;
1491 // Edit before range
1492         Edit *start_edit = 0;
1493         int have_start_edit = 0;
1494
1495 // Move all edit pointers to list
1496         for(Edit *current = edits->first;
1497                 current; )
1498         {
1499                 if(current->startproject >= start_units &&
1500                         current->startproject + current->length <= end_units)
1501                 {
1502                         if(!have_start_edit) start_edit = current->previous;
1503                         have_start_edit = 1;
1504                         //total_start_units = current->startproject;
1505                         //total_end_units = current->startproject + current->length;
1506                         new_edits.append(current);
1507
1508 // Move label pointers
1509                         if(first_track && edl->session->labels_follow_edits)
1510                         {
1511                                 double start_seconds = from_units(current->startproject);
1512                                 double end_seconds = from_units(current->startproject +
1513                                         current->length);
1514                                 for(Label *label = edl->labels->first;
1515                                         label;
1516                                         label = label->next)
1517                                 {
1518                                         if(label->position >= start_seconds &&
1519                                                 label->position < end_seconds)
1520                                         {
1521                                                 new_labels.append(label);
1522                                                 edl->labels->remove_pointer(label);
1523                                         }
1524                                 }
1525                         }
1526
1527 // Remove edit pointer
1528                         Edit *previous = current;
1529                         current = NEXT;
1530                         edits->remove_pointer(previous);
1531                 }
1532                 else
1533                 {
1534                         current = NEXT;
1535                 }
1536         }
1537
1538 // Insert pointers in random order
1539         while(new_edits.size())
1540         {
1541                 int index = rand() % new_edits.size();
1542                 Edit *edit = new_edits.get(index);
1543                 new_edits.remove_number(index);
1544                 if( !start_edit )
1545                         edits->insert_before(edits->first, edit);
1546                 else
1547                         edits->insert_after(start_edit, edit);
1548                 start_edit = edit;
1549
1550 // Recalculate start position
1551 // Save old position for moving labels
1552                 int64_t startproject1 = edit->startproject;
1553                 int64_t startproject2 = 0;
1554                 if(edit->previous)
1555                 {
1556                         edit->startproject =
1557                                 startproject2 =
1558                                 edit->previous->startproject + edit->previous->length;
1559                 }
1560                 else
1561                 {
1562                         edit->startproject = startproject2 = 0;
1563                 }
1564
1565
1566 // Insert label pointers
1567                 if(first_track && edl->session->labels_follow_edits)
1568                 {
1569                         double start_seconds1 = from_units(startproject1);
1570                         double end_seconds1 = from_units(startproject1 + edit->length);
1571                         double start_seconds2 = from_units(startproject2);
1572                         for(int i = new_labels.size() - 1; i >= 0; i--)
1573                         {
1574                                 Label *label = new_labels.get(i);
1575 // Was in old edit position
1576                                 if(label->position >= start_seconds1 &&
1577                                         label->position < end_seconds1)
1578                                 {
1579 // Move to new edit position
1580                                         double position = label->position -
1581                                                 start_seconds1 + start_seconds2;
1582                                         edl->labels->insert_label(position);
1583                                         new_labels.remove_object_number(i);
1584                                 }
1585                         }
1586                 }
1587
1588
1589         }
1590
1591         optimize();
1592
1593         if(first_track && edl->session->labels_follow_edits)
1594         {
1595                 edl->labels->optimize();
1596         }
1597 }
1598
1599 // exactly the same as shuffle_edits except for 1 line
1600 void Track::reverse_edits(double start, double end, int first_track)
1601 {
1602         ArrayList<Edit*> new_edits;
1603         ArrayList<Label*> new_labels;
1604         int64_t start_units = to_units(start, 0);
1605         int64_t end_units = to_units(end, 0);
1606 // Sample range of all edits selected
1607         //int64_t total_start_units = 0;
1608         //int64_t total_end_units = 0;
1609 // Edit before range
1610         Edit *start_edit = 0;
1611         int have_start_edit = 0;
1612
1613 // Move all edit pointers to list
1614         for(Edit *current = edits->first; current; )
1615         {
1616                 if(current->startproject >= start_units &&
1617                         current->startproject + current->length <= end_units)
1618                 {
1619                         if(!have_start_edit) start_edit = current->previous;
1620                         have_start_edit = 1;
1621                         //total_start_units = current->startproject;
1622                         //total_end_units = current->startproject + current->length;
1623                         new_edits.append(current);
1624
1625 // Move label pointers
1626                         if(first_track && edl->session->labels_follow_edits)
1627                         {
1628                                 double start_seconds = from_units(current->startproject);
1629                                 double end_seconds = from_units(current->startproject +
1630                                         current->length);
1631                                 for(Label *label = edl->labels->first;
1632                                         label;
1633                                         label = label->next)
1634                                 {
1635                                         if(label->position >= start_seconds &&
1636                                                 label->position < end_seconds)
1637                                         {
1638                                                 new_labels.append(label);
1639                                                 edl->labels->remove_pointer(label);
1640                                         }
1641                                 }
1642                         }
1643
1644 // Remove edit pointer
1645                         Edit *previous = current;
1646                         current = NEXT;
1647                         edits->remove_pointer(previous);
1648                 }
1649                 else
1650                 {
1651                         current = NEXT;
1652                 }
1653         }
1654
1655 // Insert pointers in reverse order
1656         while(new_edits.size())
1657         {
1658                 int index = new_edits.size() - 1;
1659                 Edit *edit = new_edits.get(index);
1660                 new_edits.remove_number(index);
1661                 if( !start_edit )
1662                         edits->insert_before(edits->first, edit);
1663                 else
1664                         edits->insert_after(start_edit, edit);
1665                 start_edit = edit;
1666
1667 // Recalculate start position
1668 // Save old position for moving labels
1669                 int64_t startproject1 = edit->startproject;
1670                 int64_t startproject2 = 0;
1671                 if(edit->previous)
1672                 {
1673                         edit->startproject =
1674                                 startproject2 =
1675                                 edit->previous->startproject + edit->previous->length;
1676                 }
1677                 else
1678                 {
1679                         edit->startproject = startproject2 = 0;
1680                 }
1681
1682
1683 // Insert label pointers
1684                 if(first_track && edl->session->labels_follow_edits)
1685                 {
1686                         double start_seconds1 = from_units(startproject1);
1687                         double end_seconds1 = from_units(startproject1 + edit->length);
1688                         double start_seconds2 = from_units(startproject2);
1689                         for(int i = new_labels.size() - 1; i >= 0; i--)
1690                         {
1691                                 Label *label = new_labels.get(i);
1692 // Was in old edit position
1693                                 if(label->position >= start_seconds1 &&
1694                                         label->position < end_seconds1)
1695                                 {
1696 // Move to new edit position
1697                                         double position = label->position -
1698                                                 start_seconds1 + start_seconds2;
1699                                         edl->labels->insert_label(position);
1700                                         new_labels.remove_object_number(i);
1701                                 }
1702                         }
1703                 }
1704
1705
1706         }
1707
1708         optimize();
1709
1710         if(first_track && edl->session->labels_follow_edits)
1711         {
1712                 edl->labels->optimize();
1713         }
1714 }
1715
1716 void Track::align_edits(double start,
1717         double end,
1718         ArrayList<double> *times)
1719 {
1720         int64_t start_units = to_units(start, 0);
1721         int64_t end_units = to_units(end, 0);
1722
1723 // If 1st track with data, times is empty & we need to collect the edit times.
1724         if(!times->size())
1725         {
1726                 for(Edit *current = edits->first; current; current = NEXT)
1727                 {
1728                         if(current->startproject >= start_units &&
1729                                 current->startproject + current->length <= end_units)
1730                         {
1731                                 times->append(from_units(current->startproject));
1732                         }
1733                 }
1734         }
1735         else
1736 // All other tracks get silence or cut to align the edits on the times.
1737         {
1738                 int current_time = 0;
1739                 for(Edit *current = edits->first;
1740                         current && current_time < times->size(); )
1741                 {
1742                         if(current->startproject >= start_units &&
1743                                 current->startproject + current->length <= end_units)
1744                         {
1745                                 int64_t desired_startunits = to_units(times->get(current_time), 0);
1746                                 int64_t current_startunits = current->startproject;
1747                                 current = NEXT;
1748
1749
1750                                 if(current_startunits < desired_startunits)
1751                                 {
1752 //printf("Track::align_edits %d\n", __LINE__);
1753                                         edits->paste_silence(current_startunits,
1754                                                 desired_startunits);
1755                                         shift_keyframes(current_startunits,
1756                                                 desired_startunits - current_startunits);
1757                                 }
1758                                 else
1759                                 if(current_startunits > desired_startunits)
1760                                 {
1761                                         edits->clear(desired_startunits,
1762                                                 current_startunits);
1763                                         if(edl->session->autos_follow_edits)
1764                                                 shift_keyframes(desired_startunits,
1765                                                         current_startunits - desired_startunits);
1766                                 }
1767
1768                                 current_time++;
1769                         }
1770                         else
1771                         {
1772                                 current = NEXT;
1773                         }
1774                 }
1775         }
1776
1777         optimize();
1778 }
1779
1780 int Track::purge_asset(Asset *asset)
1781 {
1782         return 0;
1783 }
1784
1785 int Track::asset_used(Asset *asset)
1786 {
1787         Edit* current_edit;
1788         int result = 0;
1789
1790         for(current_edit = edits->first; current_edit; current_edit = current_edit->next)
1791         {
1792                 if(current_edit->asset == asset)
1793                 {
1794                         result++;
1795                 }
1796         }
1797         return result;
1798 }
1799
1800 int Track::is_playable(int64_t position, int direction)
1801 {
1802         return 1;
1803 }
1804
1805
1806 int Track::plugin_used(int64_t position, int64_t direction)
1807 {
1808 //printf("Track::plugin_used 1 %d\n", this->plugin_set.total);
1809         for(int i = 0; i < this->plugin_set.total; i++)
1810         {
1811                 Plugin *current_plugin = get_current_plugin(position,
1812                         i,
1813                         direction,
1814                         0,
1815                         0);
1816
1817 //printf("Track::plugin_used 2 %p %d %d\n", current_plugin, current_plugin->on, current_plugin->plugin_type);
1818                 if(current_plugin &&
1819                         current_plugin->on &&
1820                         current_plugin->plugin_type != PLUGIN_NONE)
1821                 {
1822                         return 1;
1823                 }
1824         }
1825 //printf("Track::plugin_used 3 %p\n", current_plugin);
1826         return 0;
1827 }
1828
1829 // Audio is always rendered through VConsole
1830 int Track::direct_copy_possible(int64_t start, int direction, int use_nudge)
1831 {
1832         return 1;
1833 }
1834
1835 int64_t Track::to_units(double position, int round)
1836 {
1837         return (int64_t)position;
1838 }
1839
1840 double Track::to_doubleunits(double position)
1841 {
1842         return position;
1843 }
1844
1845 double Track::from_units(int64_t position)
1846 {
1847         return (double)position;
1848 }
1849
1850 int Track::plugin_exists(Plugin *plugin)
1851 {
1852         for(int number = 0; number < plugin_set.size(); number++)
1853         {
1854                 PluginSet *ptr = plugin_set.get(number);
1855                 for(Plugin *current_plugin = (Plugin*)ptr->first;
1856                         current_plugin;
1857                         current_plugin = (Plugin*)current_plugin->next)
1858                 {
1859                         if(current_plugin == plugin) return 1;
1860                 }
1861         }
1862
1863         for(Edit *current = edits->first; current; current = NEXT)
1864         {
1865                 if(current->transition &&
1866                         (Plugin*)current->transition == plugin) return 1;
1867         }
1868
1869
1870         return 0;
1871 }
1872