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         mixer_id = -1;
  70 }
  71
  72 Track::~Track()
  73 {
  74         delete automation;
  75         delete edits;
  76         plugin_set.remove_all_objects();
  77 }
  78
  79 void Track::create_objects()
  80 {
  81 }
  82
  83
  84 int Track::copy_settings(Track *track)
  85 {
  86         this->expand_view = track->expand_view;
  87         this->draw = track->draw;
  88         this->gang = track->gang;
  89         this->record = track->record;
  90         this->nudge = track->nudge;
  91         this->mixer_id = track->mixer_id;
  92         this->play = track->play;
  93         this->track_w = track->track_w;
  94         this->track_h = track->track_h;
  95         strcpy(this->title, track->title);
  96         return 0;
  97 }
  98
  99 int Track::get_id()
 100 {
 101         return id;
 102 }
 103
 104
 105 int Track::load_defaults(BC_Hash *defaults)
 106 {
 107         return 0;
 108 }
 109
 110 void Track::equivalent_output(Track *track, double *result)
 111 {
 112         if(data_type != track->data_type ||
 113                 track_w != track->track_w ||
 114                 track_h != track->track_h ||
 115                 play != track->play ||
 116                 nudge != track->nudge)
 117                 *result = 0;
 118
 119 // Convert result to track units
 120         int64_t result2 = -1;
 121         automation->equivalent_output(track->automation, &result2);
 122         edits->equivalent_output(track->edits, &result2);
 123
 124         int plugin_sets = MIN(plugin_set.total, track->plugin_set.total);
 125 // Test existing plugin sets
 126         for(int i = 0; i < plugin_sets; i++)
 127         {
 128                 plugin_set.values[i]->equivalent_output(
 129                         track->plugin_set.values[i],
 130                         &result2);
 131         }
 132
 133 // New EDL has more plugin sets.  Get starting plugin in new plugin sets
 134         for(int i = plugin_sets; i < plugin_set.total; i++)
 135         {
 136                 Plugin *current = plugin_set.values[i]->get_first_plugin();
 137                 if(current)
 138                 {
 139                         if(result2 < 0 || current->startproject < result2)
 140                                 result2 = current->startproject;
 141                 }
 142         }
 143
 144 // New EDL has fewer plugin sets.  Get starting plugin in old plugin set
 145         for(int i = plugin_sets; i < track->plugin_set.total; i++)
 146         {
 147                 Plugin *current = track->plugin_set.values[i]->get_first_plugin();
 148                 if(current)
 149                 {
 150                         if(result2 < 0 || current->startproject < result2)
 151                                 result2 = current->startproject;
 152                 }
 153         }
 154
 155 // Number of plugin sets differs but somehow we didn't find the start of the
 156 // change.  Assume 0
 157         if(track->plugin_set.total != plugin_set.total && result2 < 0)
 158                 result2 = 0;
 159
 160         if(result2 >= 0 &&
 161                 (*result < 0 || from_units(result2) < *result))
 162                 *result = from_units(result2);
 163 }
 164
 165
 166 int Track::is_synthesis(int64_t position,
 167         int direction)
 168 {
 169         int is_synthesis = 0;
 170         for(int i = 0; i < plugin_set.total; i++)
 171         {
 172                 Plugin *plugin = get_current_plugin(position,
 173                         i,
 174                         direction,
 175                         0,
 176                         0);
 177                 if(plugin)
 178                 {
 179 // Assume data from a shared track is synthesized
 180                         if(plugin->plugin_type == PLUGIN_SHAREDMODULE)
 181                                 is_synthesis = 1;
 182                         else
 183                                 is_synthesis = plugin->is_synthesis(position,
 184                                         direction);
 185
 186 //printf("Track::is_synthesis %d %d\n", __LINE__, is_synthesis);
 187                         if(is_synthesis) break;
 188                 }
 189         }
 190         return is_synthesis;
 191 }
 192
 193 void Track::copy_from(Track *track)
 194 {
 195         copy_settings(track);
 196         edits->copy_from(track->edits);
 197         for(int i = 0; i < this->plugin_set.total; i++)
 198                 delete this->plugin_set.values[i];
 199         this->plugin_set.remove_all_objects();
 200
 201         for(int i = 0; i < track->plugin_set.total; i++)
 202         {
 203                 PluginSet *new_plugin_set = plugin_set.append(new PluginSet(edl, this));
 204                 new_plugin_set->copy_from(track->plugin_set.values[i]);
 205         }
 206         automation->copy_from(track->automation);
 207         this->track_w = track->track_w;
 208         this->track_h = track->track_h;
 209 }
 210
 211 Track& Track::operator=(Track& track)
 212 {
 213 printf("Track::operator= 1\n");
 214         copy_from(&track);
 215         return *this;
 216 }
 217
 218 int Track::vertical_span(Theme *theme)
 219 {
 220         int result = 0;
 221         if(expand_view)
 222                 result = edl->local_session->zoom_track +
 223                         plugin_set.total *
 224                         theme->get_image("plugin_bg_data")->get_h();
 225         else
 226                 result = edl->local_session->zoom_track;
 227
 228         if(edl->session->show_titles)
 229                 result += theme->get_image("title_bg_data")->get_h();
 230
 231         return result;
 232 }
 233
 234 double Track::get_length()
 235 {
 236         double total_length = 0;
 237         double length = 0;
 238
 239 // Test edits
 240         if(edits->last)
 241         {
 242                 length = from_units(edits->last->startproject + edits->last->length);
 243                 if(length > total_length) total_length = length;
 244         }
 245
 246 // Test plugins
 247         for(int i = 0; i < plugin_set.total; i++)
 248         {
 249                 if( !plugin_set.values[i]->last ) continue;
 250                 length = from_units(plugin_set.values[i]->last->startproject +
 251                         plugin_set.values[i]->last->length);
 252                 if(length > total_length) total_length = length;
 253         }
 254
 255 // Test keyframes
 256         length = from_units(automation->get_length());
 257         if(length > total_length) total_length = length;
 258
 259
 260         return total_length;
 261 }
 262
 263 int Track::has_speed()
 264 {
 265         FloatAutos *autos = (FloatAutos*)automation->autos[AUTOMATION_SPEED];
 266         if(autos)
 267         {
 268                 if(autos->first)
 269                 {
 270                         for(FloatAuto *current = (FloatAuto*)autos->first;
 271                                 current;
 272                                 current = (FloatAuto*)current->next)
 273                         {
 274                                 if(!EQUIV(current->get_value(), 1.0) ||
 275                                         !EQUIV(current->get_control_in_value(), 0.0) ||
 276                                         !EQUIV(current->get_control_out_value(), 0.0))
 277                                 {
 278                                         return 1;
 279                                 }
 280                         }
 281                 }
 282         }
 283
 284         return 0;
 285 }
 286
 287
 288
 289 void Track::get_source_dimensions(double position, int &w, int &h)
 290 {
 291         int64_t native_position = to_units(position, 0);
 292         for(Edit *current = edits->first; current; current = NEXT)
 293         {
 294                 if(current->startproject <= native_position &&
 295                         current->startproject + current->length > native_position &&
 296                         current->asset)
 297                 {
 298                         w = current->asset->width;
 299                         h = current->asset->height;
 300                         return;
 301                 }
 302         }
 303 }
 304
 305
 306 int64_t Track::horizontal_span()
 307 {
 308         return (int64_t)(get_length() *
 309                 edl->session->sample_rate /
 310                 edl->local_session->zoom_sample +
 311                 0.5);
 312 }
 313
 314
 315 int Track::load(FileXML *file, int track_offset, uint32_t load_flags)
 316 {
 317         int result = 0;
 318         int current_plugin = 0;
 319
 320
 321         record = file->tag.get_property("RECORD", record);
 322         play = file->tag.get_property("PLAY", play);
 323         gang = file->tag.get_property("GANG", gang);
 324         draw = file->tag.get_property("DRAW", draw);
 325         nudge = file->tag.get_property("NUDGE", nudge);
 326         mixer_id = file->tag.get_property("MIXER_ID", mixer_id);
 327         expand_view = file->tag.get_property("EXPAND", expand_view);
 328         track_w = file->tag.get_property("TRACK_W", track_w);
 329         track_h = file->tag.get_property("TRACK_H", track_h);
 330
 331         load_header(file, load_flags);
 332
 333         do{
 334                 result = file->read_tag();
 335
 336                 if(!result)
 337                 {
 338                         if(file->tag.title_is("/TRACK"))
 339                         {
 340                                 result = 1;
 341                         }
 342                         else
 343                         if(file->tag.title_is("TITLE"))
 344                         {
 345                                 file->read_text_until("/TITLE", title, BCTEXTLEN);
 346                         }
 347                         else
 348                         if(load_flags && automation->load(file)
 349                         /* strstr(file->tag.get_title(), "AUTOS") */)
 350                         {
 351                                 ;
 352                         }
 353                         else
 354                         if(file->tag.title_is("EDITS"))
 355                         {
 356                                 if(load_flags & LOAD_EDITS)
 357                                         edits->load(file, track_offset);
 358                                 else
 359                                         result = file->skip_tag();
 360                         }
 361                         else
 362                         if(file->tag.title_is("PLUGINSET"))
 363                         {
 364                                 if(load_flags & LOAD_EDITS)
 365                                 {
 366                                         PluginSet *plugin_set = new PluginSet(edl, this);
 367                                         this->plugin_set.append(plugin_set);
 368                                         plugin_set->load(file, load_flags);
 369                                 }
 370                                 else
 371                                 if(load_flags & LOAD_AUTOMATION)
 372                                 {
 373                                         if(current_plugin < this->plugin_set.total)
 374                                         {
 375                                                 PluginSet *plugin_set = this->plugin_set.values[current_plugin];
 376                                                 plugin_set->load(file, load_flags);
 377                                                 current_plugin++;
 378                                         }
 379                                 }
 380                                 else
 381                                         result = file->skip_tag();
 382                         }
 383                         else
 384                                 load_derived(file, load_flags);
 385                 }
 386         }while(!result);
 387
 388
 389
 390         return 0;
 391 }
 392
 393 void Track::insert_asset(Asset *asset,
 394         EDL *nested_edl,
 395         double length,
 396         double position,
 397         int track_number)
 398 {
 399         edits->insert_asset(asset,
 400                 nested_edl,
 401                 to_units(length, 1),
 402                 to_units(position, 0),
 403                 track_number);
 404 }
 405
 406 // Insert data
 407
 408 // Default keyframes: We don't replace default keyframes in pasting but
 409 // when inserting the first EDL of a load operation we need to replace
 410 // the default keyframes.
 411
 412 // Plugins:  This is an arbitrary behavior
 413 //
 414 // 1) No plugin in source track: Paste silence into destination
 415 // plugin sets.
 416 // 2) Plugin in source track: plugin in source track is inserted into
 417 // existing destination track plugin sets, new sets being added when
 418 // necessary.
 419
 420 void Track::insert_track(Track *track,
 421         double position,
 422         int replace_default,
 423         int edit_plugins,
 424         int edit_autos,
 425         double edl_length)
 426 {
 427 // Calculate minimum length of data to pad.
 428         int64_t min_length = to_units(
 429                 MAX(edl_length, track->get_length()),
 430                 1);
 431 //printf("Track::insert_track %d %s %jd\n", __LINE__, title, min_length);
 432
 433 // Decide whether to copy settings based on load_mode
 434         if(replace_default) copy_settings(track);
 435
 436         edits->insert_edits(track->edits,
 437                 to_units(position, 0),
 438                 min_length,
 439                 edit_autos);
 440
 441         if(edit_plugins)
 442                 insert_plugin_set(track,
 443                         to_units(position, 0),
 444                         min_length,
 445                         edit_autos);
 446
 447         if(edit_autos)
 448                 automation->insert_track(track->automation,
 449                         to_units(position, 0),
 450                         min_length,
 451                         replace_default);
 452
 453         optimize();
 454
 455 }
 456
 457 // Called by insert_track
 458 void Track::insert_plugin_set(Track *track,
 459         int64_t position,
 460         int64_t min_length,
 461         int edit_autos)
 462 {
 463 // Extend plugins if no incoming plugins
 464         if(!track->plugin_set.total)
 465         {
 466                 shift_effects(position,
 467                         min_length,
 468                         edit_autos);
 469         }
 470         else
 471         for(int i = 0; i < track->plugin_set.total; i++)
 472         {
 473                 if(i >= plugin_set.total)
 474                         plugin_set.append(new PluginSet(edl, this));
 475
 476                 plugin_set.values[i]->insert_edits(track->plugin_set.values[i],
 477                         position,
 478                         min_length,
 479                         edit_autos);
 480         }
 481 }
 482
 483
 484 Plugin* Track::insert_effect(const char *title,
 485                 SharedLocation *shared_location,
 486                 KeyFrame *default_keyframe,
 487                 PluginSet *plugin_set,
 488                 double start,
 489                 double length,
 490                 int plugin_type)
 491 {
 492         if(!plugin_set)
 493         {
 494                 plugin_set = new PluginSet(edl, this);
 495                 this->plugin_set.append(plugin_set);
 496         }
 497
 498         Plugin *plugin = 0;
 499
 500 // Position is identical to source plugin
 501         if(plugin_type == PLUGIN_SHAREDPLUGIN)
 502         {
 503                 Track *source_track = tracks->get_item_number(shared_location->module);
 504                 if(source_track)
 505                 {
 506                         Plugin *source_plugin = source_track->get_current_plugin(
 507                                 edl->local_session->get_selectionstart(),
 508                                 shared_location->plugin,
 509                                 PLAY_FORWARD,
 510                                 1,
 511                                 0);
 512
 513 // From an attach operation
 514                         if(source_plugin)
 515                         {
 516                                 plugin = plugin_set->insert_plugin(title,
 517                                         source_plugin->startproject,
 518                                         source_plugin->length,
 519                                         plugin_type,
 520                                         shared_location,
 521                                         default_keyframe,
 522                                         1);
 523                         }
 524                         else
 525 // From a drag operation
 526                         {
 527                                 plugin = plugin_set->insert_plugin(title,
 528                                         to_units(start, 0),
 529                                         to_units(length, 1),
 530                                         plugin_type,
 531                                         shared_location,
 532                                         default_keyframe,
 533                                         1);
 534                         }
 535                 }
 536         }
 537         else
 538         {
 539 // This should be done in the caller
 540                 if(EQUIV(length, 0))
 541                 {
 542                         if(edl->local_session->get_selectionend() >
 543                                 edl->local_session->get_selectionstart())
 544                         {
 545                                 start = edl->local_session->get_selectionstart();
 546                                 length = edl->local_session->get_selectionend() - start;
 547                         }
 548                         else
 549                         {
 550                                 start = 0;
 551                                 length = get_length();
 552                         }
 553                 }
 554 //printf("Track::insert_effect %f %f %d %d\n", start, length, to_units(start, 0),
 555 //                      to_units(length, 0));
 556
 557                 plugin = plugin_set->insert_plugin(title,
 558                         to_units(start, 0),
 559                         to_units(length, 1),
 560                         plugin_type,
 561                         shared_location,
 562                         default_keyframe,
 563                         1);
 564         }
 565 //printf("Track::insert_effect 2 %f %f\n", start, length);
 566
 567         expand_view = 1;
 568         return plugin;
 569 }
 570
 571 void Track::move_plugins_up(PluginSet *plugin_set)
 572 {
 573         for(int i = 0; i < this->plugin_set.total; i++)
 574         {
 575                 if(this->plugin_set.values[i] == plugin_set)
 576                 {
 577                         if(i == 0) break;
 578
 579                         PluginSet *temp = this->plugin_set.values[i - 1];
 580                         this->plugin_set.values[i - 1] = this->plugin_set.values[i];
 581                         this->plugin_set.values[i] = temp;
 582
 583                         SharedLocation old_location, new_location;
 584                         new_location.module = old_location.module = tracks->number_of(this);
 585                         old_location.plugin = i;
 586                         new_location.plugin = i - 1;
 587                         tracks->change_plugins(old_location, new_location, 1);
 588                         break;
 589                 }
 590         }
 591 }
 592
 593 void Track::move_plugins_down(PluginSet *plugin_set)
 594 {
 595         for(int i = 0; i < this->plugin_set.total; i++)
 596         {
 597                 if(this->plugin_set.values[i] == plugin_set)
 598                 {
 599                         if(i == this->plugin_set.total - 1) break;
 600
 601                         PluginSet *temp = this->plugin_set.values[i + 1];
 602                         this->plugin_set.values[i + 1] = this->plugin_set.values[i];
 603                         this->plugin_set.values[i] = temp;
 604
 605                         SharedLocation old_location, new_location;
 606                         new_location.module = old_location.module = tracks->number_of(this);
 607                         old_location.plugin = i;
 608                         new_location.plugin = i + 1;
 609                         tracks->change_plugins(old_location, new_location, 1);
 610                         break;
 611                 }
 612         }
 613 }
 614
 615
 616 void Track::remove_asset(Indexable *asset)
 617 {
 618         for(Edit *edit = edits->first; edit; edit = edit->next)
 619         {
 620                 if(asset->is_asset &&
 621                         edit->asset &&
 622                         edit->asset == (Asset*)asset)
 623                 {
 624                         edit->asset = 0;
 625                 }
 626                 else
 627                 if(!asset->is_asset &&
 628                         edit->nested_edl &&
 629                         edit->nested_edl == (EDL*)asset)
 630                 {
 631                         edit->nested_edl = 0;
 632                 }
 633         }
 634         optimize();
 635 }
 636
 637 void Track::remove_pluginset(PluginSet *plugin_set)
 638 {
 639         int i;
 640         for(i = 0; i < this->plugin_set.total; i++)
 641                 if(plugin_set == this->plugin_set.values[i]) break;
 642
 643         this->plugin_set.remove_object(plugin_set);
 644         for(i++ ; i < this->plugin_set.total; i++)
 645         {
 646                 SharedLocation old_location, new_location;
 647                 new_location.module = old_location.module = tracks->number_of(this);
 648                 old_location.plugin = i;
 649                 new_location.plugin = i - 1;
 650                 tracks->change_plugins(old_location, new_location, 0);
 651         }
 652 }
 653
 654 void Track::shift_keyframes(int64_t position, int64_t length)
 655 {
 656         automation->paste_silence(position, position + length);
 657 // Effect keyframes are shifted in shift_effects
 658 }
 659
 660 void Track::shift_effects(int64_t position, int64_t length, int edit_autos)
 661 {
 662         for(int i = 0; i < plugin_set.total; i++)
 663         {
 664                 plugin_set.values[i]->shift_effects(position, length, edit_autos);
 665         }
 666 }
 667
 668 void Track::detach_effect(Plugin *plugin)
 669 {
 670 //printf("Track::detach_effect 1\n");
 671         for(int i = 0; i < plugin_set.total; i++)
 672         {
 673                 PluginSet *plugin_set = this->plugin_set.values[i];
 674                 for(Plugin *dest = (Plugin*)plugin_set->first;
 675                         dest;
 676                         dest = (Plugin*)dest->next)
 677                 {
 678                         if(dest == plugin)
 679                         {
 680                                 int64_t start = plugin->startproject;
 681                                 int64_t end = plugin->startproject + plugin->length;
 682
 683                                 plugin_set->clear(start, end, 1);
 684                                 optimize();
 685 //printf("Track::detach_effect 2 %d\n", plugin_set->length());
 686 // Delete 0 length pluginsets
 687                                 return;
 688                         }
 689                 }
 690         }
 691 }
 692
 693 void Track::resample(double old_rate, double new_rate)
 694 {
 695         edits->resample(old_rate, new_rate);
 696         automation->resample(old_rate, new_rate);
 697         for(int i = 0; i < plugin_set.total; i++)
 698                 plugin_set.values[i]->resample(old_rate, new_rate);
 699         nudge = (int64_t)(nudge * new_rate / old_rate);
 700 }
 701
 702 void Track::detach_shared_effects(int module)
 703 {
 704         for(int i = 0; i < plugin_set.size(); i++) {
 705                 PluginSet *plugin_set = this->plugin_set.get(i);
 706                 for(Plugin *dest = (Plugin*)plugin_set->first; dest; ) {
 707                         if( (dest->plugin_type == PLUGIN_SHAREDPLUGIN ||
 708                                 dest->plugin_type == PLUGIN_SHAREDMODULE) &&
 709                                 dest->shared_location.module == module ) {
 710                                 int64_t start = dest->startproject;
 711                                 int64_t end = dest->startproject + dest->length;
 712                                 plugin_set->clear(start, end, 1);
 713                         }
 714
 715                         if(dest) dest = (Plugin*)dest->next;
 716                 }
 717         }
 718         optimize();
 719 }
 720
 721
 722 void Track::optimize()
 723 {
 724         edits->optimize();
 725         for(int i = 0; i < plugin_set.total; ) {
 726                 PluginSet *plugin_set = this->plugin_set.values[i];
 727                 plugin_set->optimize();
 728 //printf("Track::optimize %d\n", plugin_set.values[i]->total());
 729 // new definition of empty track...
 730                 if( !plugin_set->last ||
 731                     (plugin_set->last == plugin_set->first &&
 732                      plugin_set->last->silence()) ) {
 733                         remove_pluginset(plugin_set);
 734                         continue;
 735                 }
 736                 ++i;
 737         }
 738 }
 739
 740 Plugin* Track::get_current_plugin(double position,
 741         int plugin_set,
 742         int direction,
 743         int convert_units,
 744         int use_nudge)
 745 {
 746         Plugin *current;
 747         if(convert_units) position = to_units(position, 0);
 748         if(use_nudge) position += nudge;
 749
 750         if(plugin_set >= this->plugin_set.total || plugin_set < 0) return 0;
 751
 752 //printf("Track::get_current_plugin 1 %d %d %d\n", position, this->plugin_set.total, direction);
 753         if(direction == PLAY_FORWARD)
 754         {
 755                 for(current = (Plugin*)this->plugin_set.values[plugin_set]->last;
 756                         current;
 757                         current = (Plugin*)PREVIOUS)
 758                 {
 759 // printf("Track::get_current_plugin 2 %d %ld %ld\n",
 760 // current->startproject,
 761 // current->startproject + current->length,
 762 // position);
 763                         if(current->startproject <= position &&
 764                                 current->startproject + current->length > position)
 765                         {
 766                                 return current;
 767                         }
 768                 }
 769         }
 770         else
 771         if(direction == PLAY_REVERSE)
 772         {
 773                 for(current = (Plugin*)this->plugin_set.values[plugin_set]->first;
 774                         current;
 775                         current = (Plugin*)NEXT)
 776                 {
 777                         if(current->startproject < position &&
 778                                 current->startproject + current->length >= position)
 779                         {
 780                                 return current;
 781                         }
 782                 }
 783         }
 784
 785         return 0;
 786 }
 787
 788 Plugin* Track::get_current_transition(double position,
 789         int direction,
 790         int convert_units,
 791         int use_nudge)
 792 {
 793         Edit *current;
 794         Plugin *result = 0;
 795         if(convert_units) position = to_units(position, 0);
 796         if(use_nudge) position += nudge;
 797
 798         if(direction == PLAY_FORWARD)
 799         {
 800                 for(current = edits->last; current; current = PREVIOUS)
 801                 {
 802                         if(current->startproject <= position && current->startproject + current->length > position)
 803                         {
 804 //printf("Track::get_current_transition %p\n", current->transition);
 805                                 if(current->transition && position < current->startproject + current->transition->length)
 806                                 {
 807                                         result = current->transition;
 808                                         break;
 809                                 }
 810                         }
 811                 }
 812         }
 813         else
 814         if(direction == PLAY_REVERSE)
 815         {
 816                 for(current = edits->first; current; current = NEXT)
 817                 {
 818                         if(current->startproject < position && current->startproject + current->length >= position)
 819                         {
 820                                 if(current->transition && position <= current->startproject + current->transition->length)
 821                                 {
 822                                         result = current->transition;
 823                                         break;
 824                                 }
 825                         }
 826                 }
 827         }
 828
 829         return result;
 830 }
 831
 832 void Track::synchronize_params(Track *track)
 833 {
 834         for(Edit *this_edit = edits->first, *that_edit = track->edits->first;
 835                 this_edit && that_edit;
 836                 this_edit = this_edit->next, that_edit = that_edit->next)
 837         {
 838                 this_edit->synchronize_params(that_edit);
 839         }
 840
 841         for(int i = 0; i < plugin_set.total && i < track->plugin_set.total; i++)
 842                 plugin_set.values[i]->synchronize_params(track->plugin_set.values[i]);
 843
 844         automation->copy_from(track->automation);
 845         this->nudge = track->nudge;
 846 }
 847
 848
 849
 850
 851
 852 int Track::dump(FILE *fp)
 853 {
 854         fprintf(fp,"   Data type %d\n", data_type);
 855         fprintf(fp,"   Title %s\n", title);
 856         fprintf(fp,"   Edits:\n");
 857         for(Edit* current = edits->first; current; current = NEXT)
 858         {
 859                 current->dump(fp);
 860         }
 861         automation->dump(fp);
 862         fprintf(fp,"   Plugin Sets: %d\n", plugin_set.total);
 863
 864         for(int i = 0; i < plugin_set.total; i++)
 865                 plugin_set.values[i]->dump(fp);
 866 //printf("Track::dump 2\n");
 867         return 0;
 868 }
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890 Track::Track() : ListItem<Track>()
 891 {
 892         y_pixel = 0;
 893 }
 894
 895 // ======================================== accounting
 896
 897 int Track::number_of()
 898 {
 899         return tracks->number_of(this);
 900 }
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914 // ================================================= editing
 915
 916 int Track::select_auto(AutoConf *auto_conf, int cursor_x, int cursor_y)
 917 {
 918         return 0;
 919 }
 920
 921 int Track::move_auto(AutoConf *auto_conf, int cursor_x, int cursor_y, int shift_down)
 922 {
 923         return 0;
 924 }
 925
 926 int Track::release_auto()
 927 {
 928         return 0;
 929 }
 930
 931 // used for copying automation alone
 932 int Track::copy_automation(double selectionstart,
 933         double selectionend,
 934         FileXML *file,
 935         int default_only,
 936         int active_only)
 937 {
 938         int64_t start = to_units(selectionstart, 0);
 939         int64_t end = to_units(selectionend, 1);
 940
 941         file->tag.set_title("TRACK");
 942 // Video or audio
 943     save_header(file);
 944         file->append_tag();
 945         file->append_newline();
 946
 947         automation->copy(start, end, file, default_only, active_only);
 948
 949         if(edl->session->auto_conf->plugins)
 950         {
 951                 for(int i = 0; i < plugin_set.total; i++)
 952                 {
 953
 954                         plugin_set.values[i]->copy_keyframes(start,
 955                                 end,
 956                                 file,
 957                                 default_only,
 958                                 active_only);
 959                 }
 960         }
 961
 962         file->tag.set_title("/TRACK");
 963         file->append_tag();
 964         file->append_newline();
 965         file->append_newline();
 966         file->append_newline();
 967         file->append_newline();
 968
 969         return 0;
 970 }
 971
 972 int Track::paste_automation(double selectionstart,
 973         double total_length,
 974         double frame_rate,
 975         int64_t sample_rate,
 976         FileXML *file,
 977         int default_only,
 978         int active_only)
 979 {
 980 // Only used for pasting automation alone.
 981         int64_t start;
 982         int64_t length;
 983         int result;
 984         double scale;
 985         int current_pluginset;
 986
 987         if(data_type == TRACK_AUDIO)
 988                 scale = edl->session->sample_rate / sample_rate;
 989         else
 990                 scale = edl->session->frame_rate / frame_rate;
 991
 992         total_length *= scale;
 993         start = to_units(selectionstart, 0);
 994         length = to_units(total_length, 1);
 995         result = 0;
 996         current_pluginset = 0;
 997 //printf("Track::paste_automation 1\n");
 998
 999         while(!result)
1000         {
1001                 result = file->read_tag();
1002
1003                 if(!result)
1004                 {
1005                         if(file->tag.title_is("/TRACK"))
1006                                 result = 1;
1007                         else
1008                         if(automation->paste(start, length, scale, file,
1009                                         default_only, active_only, 0)) {}
1010                         else if(file->tag.title_is("PLUGINSET")) {
1011                                 if(current_pluginset < plugin_set.total) {
1012                                         plugin_set.values[current_pluginset]->
1013                                                 paste_keyframes(start, length, file,
1014                                                 default_only, active_only);
1015                                         current_pluginset++;
1016                                 }
1017                         }
1018                 }
1019         }
1020
1021
1022         return 0;
1023 }
1024
1025 void Track::clear_automation(double selectionstart,
1026         double selectionend,
1027         int shift_autos,
1028         int default_only)
1029 {
1030         int64_t start = to_units(selectionstart, 0);
1031         int64_t end = to_units(selectionend, 1);
1032
1033         automation->clear(start, end, edl->session->auto_conf, 0);
1034
1035         if(edl->session->auto_conf->plugins)
1036         {
1037                 for(int i = 0; i < plugin_set.total; i++)
1038                 {
1039                         plugin_set.values[i]->clear_keyframes(start, end);
1040                 }
1041         }
1042
1043 }
1044
1045 void Track::set_automation_mode(double selectionstart,
1046         double selectionend,
1047         int mode)
1048 {
1049         int64_t start = to_units(selectionstart, 0);
1050         int64_t end = to_units(selectionend, 1);
1051
1052         automation->set_automation_mode(start, end, mode, edl->session->auto_conf);
1053 }
1054
1055
1056
1057
1058 int Track::copy(double start,
1059         double end,
1060         FileXML *file,
1061         const char *output_path)
1062 {
1063 // Use a copy of the selection in converted units
1064 // So copy_automation doesn't reconvert.
1065         int64_t start_unit = to_units(start, 0);
1066         int64_t end_unit = to_units(end, 1);
1067
1068
1069
1070
1071         file->tag.set_title("TRACK");
1072         file->tag.set_property("RECORD", record);
1073         file->tag.set_property("NUDGE", nudge);
1074         file->tag.set_property("MIXER_ID", mixer_id);
1075         file->tag.set_property("PLAY", play);
1076         file->tag.set_property("GANG", gang);
1077         file->tag.set_property("DRAW", draw);
1078         file->tag.set_property("EXPAND", expand_view);
1079         file->tag.set_property("TRACK_W", track_w);
1080         file->tag.set_property("TRACK_H", track_h);
1081         save_header(file);
1082         file->append_tag();
1083         file->append_newline();
1084         save_derived(file);
1085
1086         file->tag.set_title("TITLE");
1087         file->append_tag();
1088         file->append_text(title);
1089         file->tag.set_title("/TITLE");
1090         file->append_tag();
1091         file->append_newline();
1092
1093 //      if(data_type == TRACK_AUDIO)
1094 //              file->tag.set_property("TYPE", "AUDIO");
1095 //      else
1096 //              file->tag.set_property("TYPE", "VIDEO");
1097 //
1098 //      file->append_tag();
1099 //      file->append_newline();
1100
1101         edits->copy(start_unit, end_unit, file, output_path);
1102
1103         AutoConf auto_conf;
1104         auto_conf.set_all(1);
1105         automation->copy(start_unit, end_unit, file, 0, 0);
1106
1107
1108         for(int i = 0; i < plugin_set.total; i++)
1109         {
1110                 plugin_set.values[i]->copy(start_unit, end_unit, file);
1111         }
1112
1113         copy_derived(start_unit, end_unit, file);
1114
1115         file->tag.set_title("/TRACK");
1116         file->append_tag();
1117         file->append_newline();
1118         file->append_newline();
1119         file->append_newline();
1120         file->append_newline();
1121
1122         return 0;
1123 }
1124
1125 int Track::copy_assets(double start,
1126         double end,
1127         ArrayList<Asset*> *asset_list)
1128 {
1129         int i, result = 0;
1130
1131         start = to_units(start, 0);
1132         end = to_units(end, 1);
1133
1134         Edit *current = edits->editof((int64_t)start, PLAY_FORWARD, 0);
1135
1136 // Search all edits
1137         while(current && current->startproject < end)
1138         {
1139 // Check for duplicate assets
1140                 if(current->asset)
1141                 {
1142                         for(i = 0, result = 0; i < asset_list->total; i++)
1143                         {
1144                                 if(asset_list->values[i] == current->asset) result = 1;
1145                         }
1146 // append pointer to new asset
1147                         if(!result) asset_list->append(current->asset);
1148                 }
1149
1150                 current = NEXT;
1151         }
1152
1153         return 0;
1154 }
1155
1156 int Track::blade(double position)
1157 {
1158         int64_t start = to_units(position, 0);
1159         Edit *edit = edits->split_edit(start);
1160         if( !edit ) return 1;
1161         edit->hard_left = 1;
1162         if( edit->previous ) edit->previous->hard_right = 1;
1163         return 0;
1164 }
1165
1166 int Track::clear(double start, double end,
1167         int edit_edits, int edit_labels, int edit_plugins,
1168         int edit_autos, int convert_units, Edits *trim_edits)
1169 {
1170 // Edits::move_auto calls this routine after the units are converted to the track
1171 // format.
1172 //printf("Track::clear 1 %d %d %d\n", edit_edits, edit_labels, edit_plugins);
1173         if(convert_units)
1174         {
1175                 start = to_units(start, 0);
1176                 end = to_units(end, 1);
1177         }
1178
1179
1180         if(edit_autos)
1181                 automation->clear((int64_t)start, (int64_t)end, 0, 1);
1182
1183         if(edit_plugins)
1184         {
1185                 for(int i = 0; i < plugin_set.total; i++)
1186                 {
1187                         if(!trim_edits || trim_edits == (Edits*)plugin_set.values[i])
1188                                 plugin_set.values[i]->clear((int64_t)start, (int64_t)end, edit_autos);
1189                 }
1190         }
1191
1192         if(edit_edits)
1193                 edits->clear((int64_t)start, (int64_t)end);
1194         return 0;
1195 }
1196
1197 int Track::clear_handle(double start,
1198         double end,
1199         int clear_labels,
1200         int clear_plugins,
1201         int edit_autos,
1202         double &distance)
1203 {
1204         edits->clear_handle(start, end, clear_plugins, edit_autos, distance);
1205         return 0;
1206 }
1207
1208 int Track::popup_transition(int cursor_x, int cursor_y)
1209 {
1210         return 0;
1211 }
1212
1213
1214
1215 int Track::modify_edithandles(double oldposition,
1216         double newposition,
1217         int currentend,
1218         int handle_mode,
1219         int edit_labels,
1220         int edit_plugins,
1221         int edit_autos)
1222 {
1223         edits->modify_handles(oldposition,
1224                 newposition,
1225                 currentend,
1226                 handle_mode,
1227                 1,
1228                 edit_labels,
1229                 edit_plugins,
1230                 edit_autos,
1231                 0);
1232
1233
1234         return 0;
1235 }
1236
1237 int Track::modify_pluginhandles(double oldposition,
1238         double newposition,
1239         int currentend,
1240         int handle_mode,
1241         int edit_labels,
1242         int edit_autos,
1243         Edits *trim_edits)
1244 {
1245         for(int i = 0; i < plugin_set.total; i++)
1246         {
1247                 if(!trim_edits || trim_edits == (Edits*)plugin_set.values[i])
1248                         plugin_set.values[i]->modify_handles(oldposition,
1249                                 newposition,
1250                                 currentend,
1251                                 handle_mode,
1252 // Don't allow plugin tweeks to affect edits.
1253                                 0,
1254                                 edit_labels,
1255                                 1,
1256                                 edit_autos,
1257                                 trim_edits);
1258         }
1259         return 0;
1260 }
1261
1262
1263 int Track::paste_silence(double start, double end, int edit_plugins, int edit_autos)
1264 {
1265         int64_t start_i = to_units(start, 0);
1266         int64_t end_i = to_units(end, 1);
1267
1268         edits->paste_silence(start_i, end_i);
1269         if(edit_autos) shift_keyframes(start_i, end_i - start_i);
1270         if(edit_plugins) shift_effects(start_i, end_i - start_i, edit_autos);
1271
1272         edits->optimize();
1273         return 0;
1274 }
1275
1276 int Track::select_edit(int cursor_x,
1277         int cursor_y,
1278         double &new_start,
1279         double &new_end)
1280 {
1281         return 0;
1282 }
1283
1284 int Track::scale_time(float rate_scale, int scale_edits, int scale_autos, int64_t start, int64_t end)
1285 {
1286         return 0;
1287 }
1288
1289 void Track::change_plugins(SharedLocation &old_location, SharedLocation &new_location, int do_swap)
1290 {
1291         for(int i = 0; i < plugin_set.total; i++)
1292         {
1293                 for(Plugin *plugin = (Plugin*)plugin_set.values[i]->first;
1294                         plugin;
1295                         plugin = (Plugin*)plugin->next)
1296                 {
1297                         if(plugin->plugin_type == PLUGIN_SHAREDPLUGIN)
1298                         {
1299                                 if(plugin->shared_location == old_location)
1300                                         plugin->shared_location = new_location;
1301                                 else
1302                                 if(do_swap && plugin->shared_location == new_location)
1303                                         plugin->shared_location = old_location;
1304                         }
1305                 }
1306         }
1307 }
1308
1309 void Track::change_modules(int old_location, int new_location, int do_swap)
1310 {
1311         for(int i = 0; i < plugin_set.total; i++)
1312         {
1313                 for(Plugin *plugin = (Plugin*)plugin_set.values[i]->first;
1314                         plugin;
1315                         plugin = (Plugin*)plugin->next)
1316                 {
1317                         if(plugin->plugin_type == PLUGIN_SHAREDPLUGIN ||
1318                                 plugin->plugin_type == PLUGIN_SHAREDMODULE)
1319                         {
1320                                 if(plugin->shared_location.module == old_location)
1321                                         plugin->shared_location.module = new_location;
1322                                 else
1323                                 if(do_swap && plugin->shared_location.module == new_location)
1324                                         plugin->shared_location.module = old_location;
1325                         }
1326                 }
1327         }
1328 }
1329
1330
1331 int Track::playable_edit(int64_t position, int direction)
1332 {
1333         int result = 0;
1334         if(direction == PLAY_REVERSE) position--;
1335         for(Edit *current = edits->first; current && !result; current = NEXT)
1336         {
1337                 if(current->startproject <= position &&
1338                         current->startproject + current->length > position)
1339                 {
1340 //printf("Track::playable_edit %p %p\n", current->transition, current->asset);
1341                         if(current->transition ||
1342                                 current->asset ||
1343                                 current->nested_edl) result = 1;
1344                 }
1345         }
1346         return result;
1347 }
1348
1349
1350 int Track::need_edit(Edit *current, int test_transitions)
1351 {
1352         return ((test_transitions && current->transition) ||
1353                 (!test_transitions && current->asset));
1354 }
1355
1356 int64_t Track::plugin_change_duration(int64_t input_position,
1357         int64_t input_length,
1358         int reverse,
1359         int use_nudge)
1360 {
1361         if(use_nudge) input_position += nudge;
1362         for(int i = 0; i < plugin_set.total; i++)
1363         {
1364                 int64_t new_duration = plugin_set.values[i]->plugin_change_duration(
1365                         input_position,
1366                         input_length,
1367                         reverse);
1368                 if(new_duration < input_length) input_length = new_duration;
1369         }
1370         return input_length;
1371 }
1372
1373 int64_t Track::edit_change_duration(int64_t input_position,
1374         int64_t input_length,
1375         int reverse,
1376         int test_transitions,
1377         int use_nudge)
1378 {
1379         Edit *current;
1380         int64_t edit_length = input_length;
1381         if(use_nudge) input_position += nudge;
1382
1383         if(reverse)
1384         {
1385 // ================================= Reverse playback
1386 // Get first edit on or after position
1387                 for(current = edits->first;
1388                         current && current->startproject + current->length <= input_position;
1389                         current = NEXT)
1390                         ;
1391
1392                 if(current)
1393                 {
1394                         if(current->startproject > input_position)
1395                         {
1396 // Before first edit
1397                                 ;
1398                         }
1399                         else
1400                         if(need_edit(current, test_transitions))
1401                         {
1402 // Over an edit of interest.
1403                                 if(input_position - current->startproject < input_length)
1404                                         edit_length = input_position - current->startproject + 1;
1405                         }
1406                         else
1407                         {
1408 // Over an edit that isn't of interest.
1409 // Search for next edit of interest.
1410                                 for(current = PREVIOUS ;
1411                                         current &&
1412                                         current->startproject + current->length > input_position - input_length &&
1413                                         !need_edit(current, test_transitions);
1414                                         current = PREVIOUS)
1415                                         ;
1416
1417                                         if(current &&
1418                                                 need_edit(current, test_transitions) &&
1419                                                 current->startproject + current->length > input_position - input_length)
1420                         edit_length = input_position - current->startproject - current->length + 1;
1421                         }
1422                 }
1423                 else
1424                 {
1425 // Not over an edit.  Try the last edit.
1426                         current = edits->last;
1427                         if(current &&
1428                                 ((test_transitions && current->transition) ||
1429                                 (!test_transitions && current->asset)))
1430                                 edit_length = input_position - edits->length() + 1;
1431                 }
1432         }
1433         else
1434         {
1435 // =================================== forward playback
1436 // Get first edit on or before position
1437                 for(current = edits->last;
1438                         current && current->startproject > input_position;
1439                         current = PREVIOUS)
1440                         ;
1441
1442                 if(current)
1443                 {
1444                         if(current->startproject + current->length <= input_position)
1445                         {
1446 // Beyond last edit.
1447                                 ;
1448                         }
1449                         else
1450                         if(need_edit(current, test_transitions))
1451                         {
1452 // Over an edit of interest.
1453 // Next edit is going to require a change.
1454                                 if(current->length + current->startproject - input_position < input_length)
1455                                         edit_length = current->startproject + current->length - input_position;
1456                         }
1457                         else
1458                         {
1459 // Over an edit that isn't of interest.
1460 // Search for next edit of interest.
1461                                 for(current = NEXT ;
1462                                         current &&
1463                                         current->startproject < input_position + input_length &&
1464                                         !need_edit(current, test_transitions);
1465                                         current = NEXT)
1466                                         ;
1467
1468                                         if(current &&
1469                                                 need_edit(current, test_transitions) &&
1470                                                 current->startproject < input_position + input_length)
1471                                                 edit_length = current->startproject - input_position;
1472                         }
1473                 }
1474                 else
1475                 {
1476 // Not over an edit.  Try the first edit.
1477                         current = edits->first;
1478                         if(current &&
1479                                 ((test_transitions && current->transition) ||
1480                                 (!test_transitions && current->asset)))
1481                                 edit_length = edits->first->startproject - input_position;
1482                 }
1483         }
1484
1485         if(edit_length < input_length)
1486                 return edit_length;
1487         else
1488                 return input_length;
1489 }
1490
1491 void Track::shuffle_edits(double start, double end, int first_track)
1492 {
1493         ArrayList<Edit*> new_edits;
1494         ArrayList<Label*> new_labels;
1495         int64_t start_units = to_units(start, 0);
1496         int64_t end_units = to_units(end, 0);
1497 // Sample range of all edits selected
1498         //int64_t total_start_units = 0;
1499         //int64_t total_end_units = 0;
1500 // Edit before range
1501         Edit *start_edit = 0;
1502         int have_start_edit = 0;
1503
1504 // Move all edit pointers to list
1505         for(Edit *current = edits->first;
1506                 current; )
1507         {
1508                 if(current->startproject >= start_units &&
1509                         current->startproject + current->length <= end_units)
1510                 {
1511                         if(!have_start_edit) start_edit = current->previous;
1512                         have_start_edit = 1;
1513                         //total_start_units = current->startproject;
1514                         //total_end_units = current->startproject + current->length;
1515                         new_edits.append(current);
1516
1517 // Move label pointers
1518                         if(first_track && edl->session->labels_follow_edits)
1519                         {
1520                                 double start_seconds = from_units(current->startproject);
1521                                 double end_seconds = from_units(current->startproject +
1522                                         current->length);
1523                                 for(Label *label = edl->labels->first;
1524                                         label;
1525                                         label = label->next)
1526                                 {
1527                                         if(label->position >= start_seconds &&
1528                                                 label->position < end_seconds)
1529                                         {
1530                                                 new_labels.append(label);
1531                                                 edl->labels->remove_pointer(label);
1532                                         }
1533                                 }
1534                         }
1535
1536 // Remove edit pointer
1537                         Edit *previous = current;
1538                         current = NEXT;
1539                         edits->remove_pointer(previous);
1540                 }
1541                 else
1542                 {
1543                         current = NEXT;
1544                 }
1545         }
1546
1547 // Insert pointers in random order
1548         while(new_edits.size())
1549         {
1550                 int index = rand() % new_edits.size();
1551                 Edit *edit = new_edits.get(index);
1552                 new_edits.remove_number(index);
1553                 if( !start_edit )
1554                         edits->insert_before(edits->first, edit);
1555                 else
1556                         edits->insert_after(start_edit, edit);
1557                 start_edit = edit;
1558
1559 // Recalculate start position
1560 // Save old position for moving labels
1561                 int64_t startproject1 = edit->startproject;
1562                 int64_t startproject2 = 0;
1563                 if(edit->previous)
1564                 {
1565                         edit->startproject =
1566                                 startproject2 =
1567                                 edit->previous->startproject + edit->previous->length;
1568                 }
1569                 else
1570                 {
1571                         edit->startproject = startproject2 = 0;
1572                 }
1573
1574
1575 // Insert label pointers
1576                 if(first_track && edl->session->labels_follow_edits)
1577                 {
1578                         double start_seconds1 = from_units(startproject1);
1579                         double end_seconds1 = from_units(startproject1 + edit->length);
1580                         double start_seconds2 = from_units(startproject2);
1581                         for(int i = new_labels.size() - 1; i >= 0; i--)
1582                         {
1583                                 Label *label = new_labels.get(i);
1584 // Was in old edit position
1585                                 if(label->position >= start_seconds1 &&
1586                                         label->position < end_seconds1)
1587                                 {
1588 // Move to new edit position
1589                                         double position = label->position -
1590                                                 start_seconds1 + start_seconds2;
1591                                         edl->labels->insert_label(position);
1592                                         new_labels.remove_object_number(i);
1593                                 }
1594                         }
1595                 }
1596
1597
1598         }
1599
1600         optimize();
1601
1602         if(first_track && edl->session->labels_follow_edits)
1603         {
1604                 edl->labels->optimize();
1605         }
1606 }
1607
1608 // exactly the same as shuffle_edits except for 1 line
1609 void Track::reverse_edits(double start, double end, int first_track)
1610 {
1611         ArrayList<Edit*> new_edits;
1612         ArrayList<Label*> new_labels;
1613         int64_t start_units = to_units(start, 0);
1614         int64_t end_units = to_units(end, 0);
1615 // Sample range of all edits selected
1616         //int64_t total_start_units = 0;
1617         //int64_t total_end_units = 0;
1618 // Edit before range
1619         Edit *start_edit = 0;
1620         int have_start_edit = 0;
1621
1622 // Move all edit pointers to list
1623         for(Edit *current = edits->first; current; )
1624         {
1625                 if(current->startproject >= start_units &&
1626                         current->startproject + current->length <= end_units)
1627                 {
1628                         if(!have_start_edit) start_edit = current->previous;
1629                         have_start_edit = 1;
1630                         //total_start_units = current->startproject;
1631                         //total_end_units = current->startproject + current->length;
1632                         new_edits.append(current);
1633
1634 // Move label pointers
1635                         if(first_track && edl->session->labels_follow_edits)
1636                         {
1637                                 double start_seconds = from_units(current->startproject);
1638                                 double end_seconds = from_units(current->startproject +
1639                                         current->length);
1640                                 for(Label *label = edl->labels->first;
1641                                         label;
1642                                         label = label->next)
1643                                 {
1644                                         if(label->position >= start_seconds &&
1645                                                 label->position < end_seconds)
1646                                         {
1647                                                 new_labels.append(label);
1648                                                 edl->labels->remove_pointer(label);
1649                                         }
1650                                 }
1651                         }
1652
1653 // Remove edit pointer
1654                         Edit *previous = current;
1655                         current = NEXT;
1656                         edits->remove_pointer(previous);
1657                 }
1658                 else
1659                 {
1660                         current = NEXT;
1661                 }
1662         }
1663
1664 // Insert pointers in reverse order
1665         while(new_edits.size())
1666         {
1667                 int index = new_edits.size() - 1;
1668                 Edit *edit = new_edits.get(index);
1669                 new_edits.remove_number(index);
1670                 if( !start_edit )
1671                         edits->insert_before(edits->first, edit);
1672                 else
1673                         edits->insert_after(start_edit, edit);
1674                 start_edit = edit;
1675
1676 // Recalculate start position
1677 // Save old position for moving labels
1678                 int64_t startproject1 = edit->startproject;
1679                 int64_t startproject2 = 0;
1680                 if(edit->previous)
1681                 {
1682                         edit->startproject =
1683                                 startproject2 =
1684                                 edit->previous->startproject + edit->previous->length;
1685                 }
1686                 else
1687                 {
1688                         edit->startproject = startproject2 = 0;
1689                 }
1690
1691
1692 // Insert label pointers
1693                 if(first_track && edl->session->labels_follow_edits)
1694                 {
1695                         double start_seconds1 = from_units(startproject1);
1696                         double end_seconds1 = from_units(startproject1 + edit->length);
1697                         double start_seconds2 = from_units(startproject2);
1698                         for(int i = new_labels.size() - 1; i >= 0; i--)
1699                         {
1700                                 Label *label = new_labels.get(i);
1701 // Was in old edit position
1702                                 if(label->position >= start_seconds1 &&
1703                                         label->position < end_seconds1)
1704                                 {
1705 // Move to new edit position
1706                                         double position = label->position -
1707                                                 start_seconds1 + start_seconds2;
1708                                         edl->labels->insert_label(position);
1709                                         new_labels.remove_object_number(i);
1710                                 }
1711                         }
1712                 }
1713
1714
1715         }
1716
1717         optimize();
1718
1719         if(first_track && edl->session->labels_follow_edits)
1720         {
1721                 edl->labels->optimize();
1722         }
1723 }
1724
1725 void Track::align_edits(double start,
1726         double end,
1727         ArrayList<double> *times)
1728 {
1729         int64_t start_units = to_units(start, 0);
1730         int64_t end_units = to_units(end, 0);
1731
1732 // If 1st track with data, times is empty & we need to collect the edit times.
1733         if(!times->size())
1734         {
1735                 for(Edit *current = edits->first; current; current = NEXT)
1736                 {
1737                         if(current->startproject >= start_units &&
1738                                 current->startproject + current->length <= end_units)
1739                         {
1740                                 times->append(from_units(current->startproject));
1741                         }
1742                 }
1743         }
1744         else
1745 // All other tracks get silence or cut to align the edits on the times.
1746         {
1747                 int current_time = 0;
1748                 for(Edit *current = edits->first;
1749                         current && current_time < times->size(); )
1750                 {
1751                         if(current->startproject >= start_units &&
1752                                 current->startproject + current->length <= end_units)
1753                         {
1754                                 int64_t desired_startunits = to_units(times->get(current_time), 0);
1755                                 int64_t current_startunits = current->startproject;
1756                                 current = NEXT;
1757
1758
1759                                 if(current_startunits < desired_startunits)
1760                                 {
1761 //printf("Track::align_edits %d\n", __LINE__);
1762                                         edits->paste_silence(current_startunits,
1763                                                 desired_startunits);
1764                                         shift_keyframes(current_startunits,
1765                                                 desired_startunits - current_startunits);
1766                                 }
1767                                 else
1768                                 if(current_startunits > desired_startunits)
1769                                 {
1770                                         edits->clear(desired_startunits,
1771                                                 current_startunits);
1772                                         if(edl->session->autos_follow_edits)
1773                                                 shift_keyframes(desired_startunits,
1774                                                         current_startunits - desired_startunits);
1775                                 }
1776
1777                                 current_time++;
1778                         }
1779                         else
1780                         {
1781                                 current = NEXT;
1782                         }
1783                 }
1784         }
1785
1786         optimize();
1787 }
1788
1789 int Track::purge_asset(Asset *asset)
1790 {
1791         return 0;
1792 }
1793
1794 int Track::asset_used(Asset *asset)
1795 {
1796         Edit* current_edit;
1797         int result = 0;
1798
1799         for(current_edit = edits->first; current_edit; current_edit = current_edit->next)
1800         {
1801                 if(current_edit->asset == asset)
1802                 {
1803                         result++;
1804                 }
1805         }
1806         return result;
1807 }
1808
1809 int Track::is_playable(int64_t position, int direction)
1810 {
1811         return 1;
1812 }
1813
1814
1815 int Track::plugin_used(int64_t position, int64_t direction)
1816 {
1817 //printf("Track::plugin_used 1 %d\n", this->plugin_set.total);
1818         for(int i = 0; i < this->plugin_set.total; i++)
1819         {
1820                 Plugin *current_plugin = get_current_plugin(position,
1821                         i,
1822                         direction,
1823                         0,
1824                         0);
1825
1826 //printf("Track::plugin_used 2 %p %d %d\n", current_plugin, current_plugin->on, current_plugin->plugin_type);
1827                 if(current_plugin &&
1828                         current_plugin->on &&
1829                         current_plugin->plugin_type != PLUGIN_NONE)
1830                 {
1831                         return 1;
1832                 }
1833         }
1834 //printf("Track::plugin_used 3 %p\n", current_plugin);
1835         return 0;
1836 }
1837
1838 // Audio is always rendered through VConsole
1839 int Track::direct_copy_possible(int64_t start, int direction, int use_nudge)
1840 {
1841         return 1;
1842 }
1843
1844 int64_t Track::to_units(double position, int round)
1845 {
1846         return (int64_t)position;
1847 }
1848
1849 double Track::to_doubleunits(double position)
1850 {
1851         return position;
1852 }
1853
1854 double Track::from_units(int64_t position)
1855 {
1856         return (double)position;
1857 }
1858
1859 int64_t Track::frame_align(int64_t position, int round)
1860 {
1861         if( data_type != TRACK_VIDEO && edl->session->cursor_on_frames )
1862                 position = to_units(edl->align_to_frame(from_units(position), round), round);
1863         return position;
1864 }
1865
1866 int Track::plugin_exists(Plugin *plugin)
1867 {
1868         for(int number = 0; number < plugin_set.size(); number++)
1869         {
1870                 PluginSet *ptr = plugin_set.get(number);
1871                 for(Plugin *current_plugin = (Plugin*)ptr->first;
1872                         current_plugin;
1873                         current_plugin = (Plugin*)current_plugin->next)
1874                 {
1875                         if(current_plugin == plugin) return 1;
1876                 }
1877         }
1878
1879         for(Edit *current = edits->first; current; current = NEXT)
1880         {
1881                 if(current->transition &&
1882                         (Plugin*)current->transition == plugin) return 1;
1883         }
1884
1885
1886         return 0;
1887 }
1888
1889 int Track::get_mixer_id()
1890 {
1891         if( mixer_id < 0 ) {
1892                 int v = 0;
1893                 for( Track *track=tracks->first; track!=0; track=track->next )
1894                         if( track->mixer_id > v ) v = track->mixer_id;
1895                 mixer_id = v + 1;
1896         }
1897         return mixer_id;
1898 }
1899