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