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( show_titles() )
 222                 result += theme->get_image("title_bg_data")->get_h();
 223         if( show_assets() )
 224                 result += edl->local_session->zoom_track;
 225         if( expand_view )
 226                 result += plugin_set.total * theme->get_image("plugin_bg_data")->get_h();
 227         result = MAX(result, theme->title_h);
 228         return result;
 229 }
 230
 231 double Track::get_length()
 232 {
 233         double total_length = 0;
 234         double length = 0;
 235
 236 // Test edits
 237         if(edits->last)
 238         {
 239                 length = from_units(edits->last->startproject + edits->last->length);
 240                 if(length > total_length) total_length = length;
 241         }
 242
 243 // Test plugins
 244         for(int i = 0; i < plugin_set.total; i++)
 245         {
 246                 if( !plugin_set.values[i]->last ) continue;
 247                 length = from_units(plugin_set.values[i]->last->startproject +
 248                         plugin_set.values[i]->last->length);
 249                 if(length > total_length) total_length = length;
 250         }
 251
 252 // Test keyframes
 253         length = from_units(automation->get_length());
 254         if(length > total_length) total_length = length;
 255
 256
 257         return total_length;
 258 }
 259
 260 int Track::has_speed()
 261 {
 262         FloatAutos *autos = (FloatAutos*)automation->autos[AUTOMATION_SPEED];
 263         if(autos)
 264         {
 265                 if(autos->first)
 266                 {
 267                         for(FloatAuto *current = (FloatAuto*)autos->first;
 268                                 current;
 269                                 current = (FloatAuto*)current->next)
 270                         {
 271                                 if(!EQUIV(current->get_value(), 1.0) ||
 272                                         !EQUIV(current->get_control_in_value(), 0.0) ||
 273                                         !EQUIV(current->get_control_out_value(), 0.0))
 274                                 {
 275                                         return 1;
 276                                 }
 277                         }
 278                 }
 279         }
 280
 281         return 0;
 282 }
 283
 284 int Track::show_assets()
 285 {
 286         return expand_view || edl->session->show_assets ? 1 : 0;
 287 }
 288
 289 int Track::show_titles()
 290 {
 291         return expand_view || edl->session->show_titles ? 1 : 0;
 292 }
 293
 294 int Track::show_transitions()
 295 {
 296         return expand_view || edl->session->auto_conf->transitions ? 1 : 0;
 297 }
 298
 299 void Track::get_source_dimensions(double position, int &w, int &h)
 300 {
 301         int64_t native_position = to_units(position, 0);
 302         for(Edit *current = edits->first; current; current = NEXT)
 303         {
 304                 if(current->startproject <= native_position &&
 305                         current->startproject + current->length > native_position &&
 306                         current->asset)
 307                 {
 308                         w = current->asset->width;
 309                         h = current->asset->height;
 310                         return;
 311                 }
 312         }
 313 }
 314
 315
 316 int64_t Track::horizontal_span()
 317 {
 318         return (int64_t)(get_length() *
 319                 edl->session->sample_rate /
 320                 edl->local_session->zoom_sample +
 321                 0.5);
 322 }
 323
 324
 325 int Track::load(FileXML *file, int track_offset, uint32_t load_flags)
 326 {
 327         int result = 0;
 328         int current_plugin = 0;
 329
 330
 331         record = file->tag.get_property("RECORD", record);
 332         play = file->tag.get_property("PLAY", play);
 333         gang = file->tag.get_property("GANG", gang);
 334         draw = file->tag.get_property("DRAW", draw);
 335         nudge = file->tag.get_property("NUDGE", nudge);
 336         mixer_id = file->tag.get_property("MIXER_ID", mixer_id);
 337         expand_view = file->tag.get_property("EXPAND", expand_view);
 338         track_w = file->tag.get_property("TRACK_W", track_w);
 339         track_h = file->tag.get_property("TRACK_H", track_h);
 340
 341         load_header(file, load_flags);
 342
 343         do{
 344                 result = file->read_tag();
 345
 346                 if(!result)
 347                 {
 348                         if(file->tag.title_is("/TRACK"))
 349                         {
 350                                 result = 1;
 351                         }
 352                         else
 353                         if(file->tag.title_is("TITLE"))
 354                         {
 355                                 XMLBuffer data;
 356                                 file->read_text_until("/TITLE", &data);
 357                                 memset(title, 0, sizeof(title));
 358                                 strncpy(title, data.cstr(), sizeof(title)-1);
 359                         }
 360                         else
 361                         if(load_flags && automation->load(file)
 362                         /* strstr(file->tag.get_title(), "AUTOS") */)
 363                         {
 364                                 ;
 365                         }
 366                         else
 367                         if(file->tag.title_is("EDITS"))
 368                         {
 369                                 if(load_flags & LOAD_EDITS)
 370                                         edits->load(file, track_offset);
 371                                 else
 372                                         result = file->skip_tag();
 373                         }
 374                         else
 375                         if(file->tag.title_is("PLUGINSET"))
 376                         {
 377                                 if(load_flags & LOAD_EDITS)
 378                                 {
 379                                         PluginSet *plugin_set = new PluginSet(edl, this);
 380                                         this->plugin_set.append(plugin_set);
 381                                         plugin_set->load(file, load_flags);
 382                                 }
 383                                 else
 384                                 if(load_flags & LOAD_AUTOMATION)
 385                                 {
 386                                         if(current_plugin < this->plugin_set.total)
 387                                         {
 388                                                 PluginSet *plugin_set = this->plugin_set.values[current_plugin];
 389                                                 plugin_set->load(file, load_flags);
 390                                                 current_plugin++;
 391                                         }
 392                                 }
 393                                 else
 394                                         result = file->skip_tag();
 395                         }
 396                         else
 397                                 load_derived(file, load_flags);
 398                 }
 399         }while(!result);
 400
 401
 402
 403         return 0;
 404 }
 405
 406 void Track::insert_asset(Asset *asset,
 407         EDL *nested_edl,
 408         double length,
 409         double position,
 410         int track_number)
 411 {
 412         edits->insert_asset(asset,
 413                 nested_edl,
 414                 to_units(length, 1),
 415                 to_units(position, 0),
 416                 track_number);
 417 }
 418
 419 // Insert data
 420
 421 // Default keyframes: We don't replace default keyframes in pasting but
 422 // when inserting the first EDL of a load operation we need to replace
 423 // the default keyframes.
 424
 425 // Plugins:  This is an arbitrary behavior
 426 //
 427 // 1) No plugin in source track: Paste silence into destination
 428 // plugin sets.
 429 // 2) Plugin in source track: plugin in source track is inserted into
 430 // existing destination track plugin sets, new sets being added when
 431 // necessary.
 432
 433 void Track::insert_track(Track *track,
 434         double position,
 435         int replace_default,
 436         int edit_plugins,
 437         int edit_autos,
 438         double edl_length)
 439 {
 440 // Calculate minimum length of data to pad.
 441         int64_t min_length = to_units(
 442                 MAX(edl_length, track->get_length()),
 443                 1);
 444 //printf("Track::insert_track %d %s %jd\n", __LINE__, title, min_length);
 445
 446 // Decide whether to copy settings based on load_mode
 447         if(replace_default) copy_settings(track);
 448
 449         edits->insert_edits(track->edits,
 450                 to_units(position, 0),
 451                 min_length,
 452                 edit_autos);
 453
 454         if(edit_plugins)
 455                 insert_plugin_set(track,
 456                         to_units(position, 0),
 457                         min_length,
 458                         edit_autos);
 459
 460         if(edit_autos)
 461                 automation->insert_track(track->automation,
 462                         to_units(position, 0),
 463                         min_length,
 464                         replace_default);
 465
 466         optimize();
 467
 468 }
 469
 470 // Called by insert_track
 471 void Track::insert_plugin_set(Track *track,
 472         int64_t position,
 473         int64_t min_length,
 474         int edit_autos)
 475 {
 476 // Extend plugins if no incoming plugins
 477         if(!track->plugin_set.total)
 478         {
 479                 shift_effects(position,
 480                         min_length,
 481                         edit_autos);
 482         }
 483         else
 484         for(int i = 0; i < track->plugin_set.total; i++)
 485         {
 486                 if(i >= plugin_set.total)
 487                         plugin_set.append(new PluginSet(edl, this));
 488
 489                 plugin_set.values[i]->insert_edits(track->plugin_set.values[i],
 490                         position,
 491                         min_length,
 492                         edit_autos);
 493         }
 494 }
 495
 496
 497 Plugin* Track::insert_effect(const char *title,
 498                 SharedLocation *shared_location,
 499                 KeyFrame *default_keyframe,
 500                 PluginSet *plugin_set,
 501                 double start,
 502                 double length,
 503                 int plugin_type)
 504 {
 505         if(!plugin_set)
 506         {
 507                 plugin_set = new PluginSet(edl, this);
 508                 this->plugin_set.append(plugin_set);
 509         }
 510
 511         Plugin *plugin = 0;
 512
 513 // Position is identical to source plugin
 514         if(plugin_type == PLUGIN_SHAREDPLUGIN)
 515         {
 516                 Track *source_track = tracks->get_item_number(shared_location->module);
 517                 if(source_track)
 518                 {
 519                         Plugin *source_plugin = source_track->get_current_plugin(
 520                                 edl->local_session->get_selectionstart(1),
 521                                 shared_location->plugin,
 522                                 PLAY_FORWARD,
 523                                 1,
 524                                 0);
 525
 526 // From an attach operation
 527                         if(source_plugin)
 528                         {
 529                                 plugin = plugin_set->insert_plugin(title,
 530                                         source_plugin->startproject,
 531                                         source_plugin->length,
 532                                         plugin_type,
 533                                         shared_location,
 534                                         default_keyframe,
 535                                         1);
 536                         }
 537                         else
 538 // From a drag operation
 539                         {
 540                                 plugin = plugin_set->insert_plugin(title,
 541                                         to_units(start, 0),
 542                                         to_units(length, 1),
 543                                         plugin_type,
 544                                         shared_location,
 545                                         default_keyframe,
 546                                         1);
 547                         }
 548                 }
 549         }
 550         else
 551         {
 552 // This should be done in the caller
 553                 if(EQUIV(length, 0))
 554                 {
 555                         if(edl->local_session->get_selectionend() >
 556                                 edl->local_session->get_selectionstart())
 557                         {
 558                                 start = edl->local_session->get_selectionstart();
 559                                 length = edl->local_session->get_selectionend() - start;
 560                         }
 561                         else
 562                         {
 563                                 start = 0;
 564                                 length = get_length();
 565                         }
 566                 }
 567 //printf("Track::insert_effect %f %f %d %d\n", start, length, to_units(start, 0),
 568 //                      to_units(length, 0));
 569
 570                 plugin = plugin_set->insert_plugin(title,
 571                         to_units(start, 0),
 572                         to_units(length, 1),
 573                         plugin_type,
 574                         shared_location,
 575                         default_keyframe,
 576                         1);
 577         }
 578 //printf("Track::insert_effect 2 %f %f\n", start, length);
 579
 580         expand_view = 1;
 581         return plugin;
 582 }
 583
 584 void Track::move_plugins_up(PluginSet *plugin_set)
 585 {
 586         for(int i = 0; i < this->plugin_set.total; i++)
 587         {
 588                 if(this->plugin_set.values[i] == plugin_set)
 589                 {
 590                         if(i == 0) break;
 591
 592                         PluginSet *temp = this->plugin_set.values[i - 1];
 593                         this->plugin_set.values[i - 1] = this->plugin_set.values[i];
 594                         this->plugin_set.values[i] = temp;
 595
 596                         SharedLocation old_location, new_location;
 597                         new_location.module = old_location.module = tracks->number_of(this);
 598                         old_location.plugin = i;
 599                         new_location.plugin = i - 1;
 600                         tracks->change_plugins(old_location, new_location, 1);
 601                         break;
 602                 }
 603         }
 604 }
 605
 606 void Track::move_plugins_down(PluginSet *plugin_set)
 607 {
 608         for(int i = 0; i < this->plugin_set.total; i++)
 609         {
 610                 if(this->plugin_set.values[i] == plugin_set)
 611                 {
 612                         if(i == this->plugin_set.total - 1) break;
 613
 614                         PluginSet *temp = this->plugin_set.values[i + 1];
 615                         this->plugin_set.values[i + 1] = this->plugin_set.values[i];
 616                         this->plugin_set.values[i] = temp;
 617
 618                         SharedLocation old_location, new_location;
 619                         new_location.module = old_location.module = tracks->number_of(this);
 620                         old_location.plugin = i;
 621                         new_location.plugin = i + 1;
 622                         tracks->change_plugins(old_location, new_location, 1);
 623                         break;
 624                 }
 625         }
 626 }
 627
 628
 629 void Track::remove_asset(Indexable *asset)
 630 {
 631         for(Edit *edit = edits->first; edit; edit = edit->next)
 632         {
 633                 if(asset->is_asset &&
 634                         edit->asset &&
 635                         edit->asset == (Asset*)asset)
 636                 {
 637                         edit->asset = 0;
 638                 }
 639                 else
 640                 if(!asset->is_asset &&
 641                         edit->nested_edl &&
 642                         edit->nested_edl == (EDL*)asset)
 643                 {
 644                         edit->nested_edl = 0;
 645                 }
 646         }
 647         optimize();
 648 }
 649
 650 void Track::remove_pluginset(PluginSet *plugin_set)
 651 {
 652         int i;
 653         for(i = 0; i < this->plugin_set.total; i++)
 654                 if(plugin_set == this->plugin_set.values[i]) break;
 655
 656         this->plugin_set.remove_object(plugin_set);
 657         for(i++ ; i < this->plugin_set.total; i++)
 658         {
 659                 SharedLocation old_location, new_location;
 660                 new_location.module = old_location.module = tracks->number_of(this);
 661                 old_location.plugin = i;
 662                 new_location.plugin = i - 1;
 663                 tracks->change_plugins(old_location, new_location, 0);
 664         }
 665 }
 666
 667 void Track::shift_keyframes(int64_t position, int64_t length)
 668 {
 669         automation->paste_silence(position, position + length);
 670 // Effect keyframes are shifted in shift_effects
 671 }
 672
 673 void Track::shift_effects(int64_t position, int64_t length, int edit_autos)
 674 {
 675         for(int i = 0; i < plugin_set.total; i++)
 676         {
 677                 plugin_set.values[i]->shift_effects(position, length, edit_autos);
 678         }
 679 }
 680
 681 void Track::detach_effect(Plugin *plugin)
 682 {
 683 //printf("Track::detach_effect 1\n");
 684         for(int i = 0; i < plugin_set.total; i++)
 685         {
 686                 PluginSet *plugin_set = this->plugin_set.values[i];
 687                 for(Plugin *dest = (Plugin*)plugin_set->first;
 688                         dest;
 689                         dest = (Plugin*)dest->next)
 690                 {
 691                         if(dest == plugin)
 692                         {
 693                                 int64_t start = plugin->startproject;
 694                                 int64_t end = plugin->startproject + plugin->length;
 695
 696                                 plugin_set->clear(start, end, 1);
 697                                 optimize();
 698 //printf("Track::detach_effect 2 %d\n", plugin_set->length());
 699 // Delete 0 length pluginsets
 700                                 return;
 701                         }
 702                 }
 703         }
 704 }
 705
 706 void Track::resample(double old_rate, double new_rate)
 707 {
 708         edits->resample(old_rate, new_rate);
 709         automation->resample(old_rate, new_rate);
 710         for(int i = 0; i < plugin_set.total; i++)
 711                 plugin_set.values[i]->resample(old_rate, new_rate);
 712         nudge = (int64_t)(nudge * new_rate / old_rate);
 713 }
 714
 715 void Track::detach_shared_effects(int module)
 716 {
 717         for(int i = 0; i < plugin_set.size(); i++) {
 718                 PluginSet *plugin_set = this->plugin_set.get(i);
 719                 for(Plugin *dest = (Plugin*)plugin_set->first; dest; ) {
 720                         if( (dest->plugin_type == PLUGIN_SHAREDPLUGIN ||
 721                                 dest->plugin_type == PLUGIN_SHAREDMODULE) &&
 722                                 dest->shared_location.module == module ) {
 723                                 int64_t start = dest->startproject;
 724                                 int64_t end = dest->startproject + dest->length;
 725                                 plugin_set->clear(start, end, 1);
 726                         }
 727
 728                         if(dest) dest = (Plugin*)dest->next;
 729                 }
 730         }
 731         optimize();
 732 }
 733
 734
 735 void Track::optimize()
 736 {
 737         edits->optimize();
 738         for(int i = 0; i < plugin_set.total; ) {
 739                 PluginSet *plugin_set = this->plugin_set.values[i];
 740                 plugin_set->optimize();
 741 //printf("Track::optimize %d\n", plugin_set.values[i]->total());
 742 // new definition of empty track...
 743                 if( !plugin_set->last ||
 744                     (plugin_set->last == plugin_set->first &&
 745                      plugin_set->last->silence()) ) {
 746                         remove_pluginset(plugin_set);
 747                         continue;
 748                 }
 749                 ++i;
 750         }
 751 }
 752
 753 Plugin* Track::get_current_plugin(double position,
 754         int plugin_set,
 755         int direction,
 756         int convert_units,
 757         int use_nudge)
 758 {
 759         Plugin *current;
 760         if(convert_units) position = to_units(position, 0);
 761         if(use_nudge) position += nudge;
 762
 763         if(plugin_set >= this->plugin_set.total || plugin_set < 0) return 0;
 764
 765 //printf("Track::get_current_plugin 1 %d %d %d\n", position, this->plugin_set.total, direction);
 766         if(direction == PLAY_FORWARD)
 767         {
 768                 for(current = (Plugin*)this->plugin_set.values[plugin_set]->last;
 769                         current;
 770                         current = (Plugin*)PREVIOUS)
 771                 {
 772 // printf("Track::get_current_plugin 2 %d %ld %ld\n",
 773 // current->startproject,
 774 // current->startproject + current->length,
 775 // position);
 776                         if(current->startproject <= position &&
 777                                 current->startproject + current->length > position)
 778                         {
 779                                 return current;
 780                         }
 781                 }
 782         }
 783         else
 784         if(direction == PLAY_REVERSE)
 785         {
 786                 for(current = (Plugin*)this->plugin_set.values[plugin_set]->first;
 787                         current;
 788                         current = (Plugin*)NEXT)
 789                 {
 790                         if(current->startproject < position &&
 791                                 current->startproject + current->length >= position)
 792                         {
 793                                 return current;
 794                         }
 795                 }
 796         }
 797
 798         return 0;
 799 }
 800
 801 Plugin* Track::get_current_transition(double position,
 802         int direction,
 803         int convert_units,
 804         int use_nudge)
 805 {
 806         Edit *current;
 807         Plugin *result = 0;
 808         if(convert_units) position = to_units(position, 0);
 809         if(use_nudge) position += nudge;
 810
 811         if(direction == PLAY_FORWARD)
 812         {
 813                 for(current = edits->last; current; current = PREVIOUS)
 814                 {
 815                         if(current->startproject <= position && current->startproject + current->length > position)
 816                         {
 817 //printf("Track::get_current_transition %p\n", current->transition);
 818                                 if(current->transition && position < current->startproject + current->transition->length)
 819                                 {
 820                                         result = current->transition;
 821                                         break;
 822                                 }
 823                         }
 824                 }
 825         }
 826         else
 827         if(direction == PLAY_REVERSE)
 828         {
 829                 for(current = edits->first; current; current = NEXT)
 830                 {
 831                         if(current->startproject < position && current->startproject + current->length >= position)
 832                         {
 833                                 if(current->transition && position <= current->startproject + current->transition->length)
 834                                 {
 835                                         result = current->transition;
 836                                         break;
 837                                 }
 838                         }
 839                 }
 840         }
 841
 842         return result;
 843 }
 844
 845 void Track::synchronize_params(Track *track)
 846 {
 847         for(Edit *this_edit = edits->first, *that_edit = track->edits->first;
 848                 this_edit && that_edit;
 849                 this_edit = this_edit->next, that_edit = that_edit->next)
 850         {
 851                 this_edit->synchronize_params(that_edit);
 852         }
 853
 854         for(int i = 0; i < plugin_set.total && i < track->plugin_set.total; i++)
 855                 plugin_set.values[i]->synchronize_params(track->plugin_set.values[i]);
 856
 857         automation->copy_from(track->automation);
 858         this->nudge = track->nudge;
 859 }
 860
 861
 862
 863
 864
 865 int Track::dump(FILE *fp)
 866 {
 867         fprintf(fp,"   Data type %d\n", data_type);
 868         fprintf(fp,"   Title %s\n", title);
 869         fprintf(fp,"   Edits:\n");
 870         for(Edit* current = edits->first; current; current = NEXT)
 871         {
 872                 current->dump(fp);
 873         }
 874         automation->dump(fp);
 875         fprintf(fp,"   Plugin Sets: %d\n", plugin_set.total);
 876
 877         for(int i = 0; i < plugin_set.total; i++)
 878                 plugin_set.values[i]->dump(fp);
 879 //printf("Track::dump 2\n");
 880         return 0;
 881 }
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903 Track::Track() : ListItem<Track>()
 904 {
 905         y_pixel = 0;
 906 }
 907
 908 // ======================================== accounting
 909
 910 int Track::number_of()
 911 {
 912         return tracks->number_of(this);
 913 }
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927 // ================================================= editing
 928
 929 int Track::select_auto(AutoConf *auto_conf, int cursor_x, int cursor_y)
 930 {
 931         return 0;
 932 }
 933
 934 int Track::move_auto(AutoConf *auto_conf, int cursor_x, int cursor_y, int shift_down)
 935 {
 936         return 0;
 937 }
 938
 939 int Track::release_auto()
 940 {
 941         return 0;
 942 }
 943
 944 // used for copying automation alone
 945 int Track::copy_automation(double selectionstart,
 946         double selectionend,
 947         FileXML *file,
 948         int default_only,
 949         int active_only)
 950 {
 951         int64_t start = to_units(selectionstart, 0);
 952         int64_t end = to_units(selectionend, 1);
 953
 954         file->tag.set_title("TRACK");
 955 // Video or audio
 956     save_header(file);
 957         file->append_tag();
 958         file->append_newline();
 959
 960         automation->copy(start, end, file, default_only, active_only);
 961
 962         if(edl->session->auto_conf->plugins)
 963         {
 964                 for(int i = 0; i < plugin_set.total; i++)
 965                 {
 966
 967                         plugin_set.values[i]->copy_keyframes(start,
 968                                 end,
 969                                 file,
 970                                 default_only,
 971                                 active_only);
 972                 }
 973         }
 974
 975         file->tag.set_title("/TRACK");
 976         file->append_tag();
 977         file->append_newline();
 978         file->append_newline();
 979         file->append_newline();
 980         file->append_newline();
 981
 982         return 0;
 983 }
 984
 985 int Track::paste_automation(double selectionstart,
 986         double total_length,
 987         double frame_rate,
 988         int64_t sample_rate,
 989         FileXML *file,
 990         int default_only,
 991         int active_only)
 992 {
 993 // Only used for pasting automation alone.
 994         int64_t start;
 995         int64_t length;
 996         int result;
 997         double scale;
 998         int current_pluginset;
 999
1000         if(data_type == TRACK_AUDIO)
1001                 scale = edl->session->sample_rate / sample_rate;
1002         else
1003                 scale = edl->session->frame_rate / frame_rate;
1004
1005         total_length *= scale;
1006         start = to_units(selectionstart, 0);
1007         length = to_units(total_length, 1);
1008         result = 0;
1009         current_pluginset = 0;
1010 //printf("Track::paste_automation 1\n");
1011
1012         while(!result)
1013         {
1014                 result = file->read_tag();
1015
1016                 if(!result)
1017                 {
1018                         if(file->tag.title_is("/TRACK"))
1019                                 result = 1;
1020                         else
1021                         if(automation->paste(start, length, scale, file,
1022                                         default_only, active_only, 0)) {}
1023                         else if(file->tag.title_is("PLUGINSET")) {
1024                                 if(current_pluginset < plugin_set.total) {
1025                                         plugin_set.values[current_pluginset]->
1026                                                 paste_keyframes(start, length, file,
1027                                                 default_only, active_only);
1028                                         current_pluginset++;
1029                                 }
1030                         }
1031                 }
1032         }
1033
1034
1035         return 0;
1036 }
1037
1038 void Track::clear_automation(double selectionstart,
1039         double selectionend,
1040         int shift_autos,
1041         int default_only)
1042 {
1043         int64_t start = to_units(selectionstart, 0);
1044         int64_t end = to_units(selectionend, 1);
1045
1046         automation->clear(start, end, edl->session->auto_conf, 0);
1047
1048         if(edl->session->auto_conf->plugins)
1049         {
1050                 for(int i = 0; i < plugin_set.total; i++)
1051                 {
1052                         plugin_set.values[i]->clear_keyframes(start, end);
1053                 }
1054         }
1055
1056 }
1057
1058 void Track::set_automation_mode(double selectionstart,
1059         double selectionend,
1060         int mode)
1061 {
1062         int64_t start = to_units(selectionstart, 0);
1063         int64_t end = to_units(selectionend, 1);
1064
1065         automation->set_automation_mode(start, end, mode, edl->session->auto_conf);
1066 }
1067
1068
1069
1070
1071 int Track::copy(double start,
1072         double end,
1073         FileXML *file,
1074         const char *output_path)
1075 {
1076 // Use a copy of the selection in converted units
1077 // So copy_automation doesn't reconvert.
1078         int64_t start_unit = to_units(start, 0);
1079         int64_t end_unit = to_units(end, 1);
1080
1081
1082
1083
1084         file->tag.set_title("TRACK");
1085         file->tag.set_property("RECORD", record);
1086         file->tag.set_property("NUDGE", nudge);
1087         file->tag.set_property("MIXER_ID", mixer_id);
1088         file->tag.set_property("PLAY", play);
1089         file->tag.set_property("GANG", gang);
1090         file->tag.set_property("DRAW", draw);
1091         file->tag.set_property("EXPAND", expand_view);
1092         file->tag.set_property("TRACK_W", track_w);
1093         file->tag.set_property("TRACK_H", track_h);
1094         save_header(file);
1095         file->append_tag();
1096         file->append_newline();
1097         save_derived(file);
1098
1099         file->tag.set_title("TITLE");
1100         file->append_tag();
1101         file->append_text(title);
1102         file->tag.set_title("/TITLE");
1103         file->append_tag();
1104         file->append_newline();
1105
1106 //      if(data_type == TRACK_AUDIO)
1107 //              file->tag.set_property("TYPE", "AUDIO");
1108 //      else
1109 //              file->tag.set_property("TYPE", "VIDEO");
1110 //
1111 //      file->append_tag();
1112 //      file->append_newline();
1113
1114         edits->copy(start_unit, end_unit, file, output_path);
1115
1116         AutoConf auto_conf;
1117         auto_conf.set_all(1);
1118         automation->copy(start_unit, end_unit, file, 0, 0);
1119
1120
1121         for(int i = 0; i < plugin_set.total; i++)
1122         {
1123                 plugin_set.values[i]->copy(start_unit, end_unit, file);
1124         }
1125
1126         copy_derived(start_unit, end_unit, file);
1127
1128         file->tag.set_title("/TRACK");
1129         file->append_tag();
1130         file->append_newline();
1131         file->append_newline();
1132         file->append_newline();
1133         file->append_newline();
1134
1135         return 0;
1136 }
1137
1138 int Track::copy_assets(double start,
1139         double end,
1140         ArrayList<Asset*> *asset_list)
1141 {
1142         int i, result = 0;
1143
1144         start = to_units(start, 0);
1145         end = to_units(end, 1);
1146
1147         Edit *current = edits->editof((int64_t)start, PLAY_FORWARD, 0);
1148
1149 // Search all edits
1150         while(current && current->startproject < end)
1151         {
1152 // Check for duplicate assets
1153                 if(current->asset)
1154                 {
1155                         for(i = 0, result = 0; i < asset_list->total; i++)
1156                         {
1157                                 if(asset_list->values[i] == current->asset) result = 1;
1158                         }
1159 // append pointer to new asset
1160                         if(!result) asset_list->append(current->asset);
1161                 }
1162
1163                 current = NEXT;
1164         }
1165
1166         return 0;
1167 }
1168
1169 int Track::blade(double position)
1170 {
1171         int64_t start = to_units(position, 0);
1172         Edit *edit = edits->split_edit(start);
1173         if( !edit ) return 1;
1174         edit->hard_left = 1;
1175         if( edit->previous ) edit->previous->hard_right = 1;
1176         return 0;
1177 }
1178
1179 int Track::clear(double start, double end,
1180         int edit_edits, int edit_labels, int edit_plugins,
1181         int edit_autos, int convert_units, Edits *trim_edits)
1182 {
1183 // Edits::move_auto calls this routine after the units are converted to the track
1184 // format.
1185 //printf("Track::clear 1 %d %d %d\n", edit_edits, edit_labels, edit_plugins);
1186         if(convert_units)
1187         {
1188                 start = to_units(start, 0);
1189                 end = to_units(end, 1);
1190         }
1191
1192
1193         if(edit_autos)
1194                 automation->clear((int64_t)start, (int64_t)end, 0, 1);
1195
1196         if(edit_plugins)
1197         {
1198                 for(int i = 0; i < plugin_set.total; i++)
1199                 {
1200                         if(!trim_edits || trim_edits == (Edits*)plugin_set.values[i])
1201                                 plugin_set.values[i]->clear((int64_t)start, (int64_t)end, edit_autos);
1202                 }
1203         }
1204
1205         if(edit_edits)
1206                 edits->clear((int64_t)start, (int64_t)end);
1207         return 0;
1208 }
1209
1210 int Track::clear_handle(double start,
1211         double end,
1212         int clear_labels,
1213         int clear_plugins,
1214         int edit_autos,
1215         double &distance)
1216 {
1217         edits->clear_handle(start, end, clear_plugins, edit_autos, distance);
1218         return 0;
1219 }
1220
1221 int Track::popup_transition(int cursor_x, int cursor_y)
1222 {
1223         return 0;
1224 }
1225
1226
1227
1228 int Track::modify_edithandles(double oldposition,
1229         double newposition,
1230         int currentend,
1231         int handle_mode,
1232         int edit_labels,
1233         int edit_plugins,
1234         int edit_autos)
1235 {
1236         edits->modify_handles(oldposition,
1237                 newposition,
1238                 currentend,
1239                 handle_mode,
1240                 1,
1241                 edit_labels,
1242                 edit_plugins,
1243                 edit_autos,
1244                 0);
1245
1246
1247         return 0;
1248 }
1249
1250 int Track::modify_pluginhandles(double oldposition,
1251         double newposition,
1252         int currentend,
1253         int handle_mode,
1254         int edit_labels,
1255         int edit_autos,
1256         Edits *trim_edits)
1257 {
1258         for(int i = 0; i < plugin_set.total; i++)
1259         {
1260                 if(!trim_edits || trim_edits == (Edits*)plugin_set.values[i])
1261                         plugin_set.values[i]->modify_handles(oldposition,
1262                                 newposition,
1263                                 currentend,
1264                                 handle_mode,
1265 // Don't allow plugin tweeks to affect edits.
1266                                 0,
1267                                 edit_labels,
1268                                 1,
1269                                 edit_autos,
1270                                 trim_edits);
1271         }
1272         return 0;
1273 }
1274
1275
1276 int Track::paste_silence(double start, double end, int edit_plugins, int edit_autos)
1277 {
1278         int64_t start_i = to_units(start, 0);
1279         int64_t end_i = to_units(end, 1);
1280
1281         edits->paste_silence(start_i, end_i);
1282         if(edit_autos) shift_keyframes(start_i, end_i - start_i);
1283         if(edit_plugins) shift_effects(start_i, end_i - start_i, edit_autos);
1284
1285         edits->optimize();
1286         return 0;
1287 }
1288
1289 int Track::select_edit(int cursor_x,
1290         int cursor_y,
1291         double &new_start,
1292         double &new_end)
1293 {
1294         return 0;
1295 }
1296
1297 int Track::scale_time(float rate_scale, int scale_edits, int scale_autos, int64_t start, int64_t end)
1298 {
1299         return 0;
1300 }
1301
1302 void Track::change_plugins(SharedLocation &old_location, SharedLocation &new_location, int do_swap)
1303 {
1304         for(int i = 0; i < plugin_set.total; i++)
1305         {
1306                 for(Plugin *plugin = (Plugin*)plugin_set.values[i]->first;
1307                         plugin;
1308                         plugin = (Plugin*)plugin->next)
1309                 {
1310                         if(plugin->plugin_type == PLUGIN_SHAREDPLUGIN)
1311                         {
1312                                 if(plugin->shared_location == old_location)
1313                                         plugin->shared_location = new_location;
1314                                 else
1315                                 if(do_swap && plugin->shared_location == new_location)
1316                                         plugin->shared_location = old_location;
1317                         }
1318                 }
1319         }
1320 }
1321
1322 void Track::change_modules(int old_location, int new_location, int do_swap)
1323 {
1324         for(int i = 0; i < plugin_set.total; i++)
1325         {
1326                 for(Plugin *plugin = (Plugin*)plugin_set.values[i]->first;
1327                         plugin;
1328                         plugin = (Plugin*)plugin->next)
1329                 {
1330                         if(plugin->plugin_type == PLUGIN_SHAREDPLUGIN ||
1331                                 plugin->plugin_type == PLUGIN_SHAREDMODULE)
1332                         {
1333                                 if(plugin->shared_location.module == old_location)
1334                                         plugin->shared_location.module = new_location;
1335                                 else
1336                                 if(do_swap && plugin->shared_location.module == new_location)
1337                                         plugin->shared_location.module = old_location;
1338                         }
1339                 }
1340         }
1341 }
1342
1343
1344 int Track::playable_edit(int64_t position, int direction)
1345 {
1346         int result = 0;
1347         if(direction == PLAY_REVERSE) position--;
1348         for(Edit *current = edits->first; current && !result; current = NEXT)
1349         {
1350                 if(current->startproject <= position &&
1351                         current->startproject + current->length > position)
1352                 {
1353 //printf("Track::playable_edit %p %p\n", current->transition, current->asset);
1354                         if(current->transition ||
1355                                 current->asset ||
1356                                 current->nested_edl) result = 1;
1357                 }
1358         }
1359         return result;
1360 }
1361
1362
1363 int Track::need_edit(Edit *current, int test_transitions)
1364 {
1365         return ((test_transitions && current->transition) ||
1366                 (!test_transitions && current->asset));
1367 }
1368
1369 int64_t Track::plugin_change_duration(int64_t input_position,
1370         int64_t input_length,
1371         int reverse,
1372         int use_nudge)
1373 {
1374         if(use_nudge) input_position += nudge;
1375         for(int i = 0; i < plugin_set.total; i++)
1376         {
1377                 int64_t new_duration = plugin_set.values[i]->plugin_change_duration(
1378                         input_position,
1379                         input_length,
1380                         reverse);
1381                 if(new_duration < input_length) input_length = new_duration;
1382         }
1383         return input_length;
1384 }
1385
1386 int64_t Track::edit_change_duration(int64_t input_position,
1387         int64_t input_length,
1388         int reverse,
1389         int test_transitions,
1390         int use_nudge)
1391 {
1392         Edit *current;
1393         int64_t edit_length = input_length;
1394         if(use_nudge) input_position += nudge;
1395
1396         if(reverse)
1397         {
1398 // ================================= Reverse playback
1399 // Get first edit on or after position
1400                 for(current = edits->first;
1401                         current && current->startproject + current->length <= input_position;
1402                         current = NEXT)
1403                         ;
1404
1405                 if(current)
1406                 {
1407                         if(current->startproject > input_position)
1408                         {
1409 // Before first edit
1410                                 ;
1411                         }
1412                         else
1413                         if(need_edit(current, test_transitions))
1414                         {
1415 // Over an edit of interest.
1416                                 if(input_position - current->startproject < input_length)
1417                                         edit_length = input_position - current->startproject + 1;
1418                         }
1419                         else
1420                         {
1421 // Over an edit that isn't of interest.
1422 // Search for next edit of interest.
1423                                 for(current = PREVIOUS ;
1424                                         current &&
1425                                         current->startproject + current->length > input_position - input_length &&
1426                                         !need_edit(current, test_transitions);
1427                                         current = PREVIOUS)
1428                                         ;
1429
1430                                         if(current &&
1431                                                 need_edit(current, test_transitions) &&
1432                                                 current->startproject + current->length > input_position - input_length)
1433                         edit_length = input_position - current->startproject - current->length + 1;
1434                         }
1435                 }
1436                 else
1437                 {
1438 // Not over an edit.  Try the last edit.
1439                         current = edits->last;
1440                         if(current &&
1441                                 ((test_transitions && current->transition) ||
1442                                 (!test_transitions && current->asset)))
1443                                 edit_length = input_position - edits->length() + 1;
1444                 }
1445         }
1446         else
1447         {
1448 // =================================== forward playback
1449 // Get first edit on or before position
1450                 for(current = edits->last;
1451                         current && current->startproject > input_position;
1452                         current = PREVIOUS)
1453                         ;
1454
1455                 if(current)
1456                 {
1457                         if(current->startproject + current->length <= input_position)
1458                         {
1459 // Beyond last edit.
1460                                 ;
1461                         }
1462                         else
1463                         if(need_edit(current, test_transitions))
1464                         {
1465 // Over an edit of interest.
1466 // Next edit is going to require a change.
1467                                 if(current->length + current->startproject - input_position < input_length)
1468                                         edit_length = current->startproject + current->length - input_position;
1469                         }
1470                         else
1471                         {
1472 // Over an edit that isn't of interest.
1473 // Search for next edit of interest.
1474                                 for(current = NEXT ;
1475                                         current &&
1476                                         current->startproject < input_position + input_length &&
1477                                         !need_edit(current, test_transitions);
1478                                         current = NEXT)
1479                                         ;
1480
1481                                         if(current &&
1482                                                 need_edit(current, test_transitions) &&
1483                                                 current->startproject < input_position + input_length)
1484                                                 edit_length = current->startproject - input_position;
1485                         }
1486                 }
1487                 else
1488                 {
1489 // Not over an edit.  Try the first edit.
1490                         current = edits->first;
1491                         if(current &&
1492                                 ((test_transitions && current->transition) ||
1493                                 (!test_transitions && current->asset)))
1494                                 edit_length = edits->first->startproject - input_position;
1495                 }
1496         }
1497
1498         if(edit_length < input_length)
1499                 return edit_length;
1500         else
1501                 return input_length;
1502 }
1503
1504 void Track::shuffle_edits(double start, double end, int first_track)
1505 {
1506         ArrayList<Edit*> new_edits;
1507         ArrayList<Label*> new_labels;
1508         int64_t start_units = to_units(start, 0);
1509         int64_t end_units = to_units(end, 0);
1510 // Sample range of all edits selected
1511         //int64_t total_start_units = 0;
1512         //int64_t total_end_units = 0;
1513 // Edit before range
1514         Edit *start_edit = 0;
1515         int have_start_edit = 0;
1516
1517 // Move all edit pointers to list
1518         for(Edit *current = edits->first;
1519                 current; )
1520         {
1521                 if(current->startproject >= start_units &&
1522                         current->startproject + current->length <= end_units)
1523                 {
1524                         if(!have_start_edit) start_edit = current->previous;
1525                         have_start_edit = 1;
1526                         //total_start_units = current->startproject;
1527                         //total_end_units = current->startproject + current->length;
1528                         new_edits.append(current);
1529
1530 // Move label pointers
1531                         if(first_track && edl->session->labels_follow_edits)
1532                         {
1533                                 double start_seconds = from_units(current->startproject);
1534                                 double end_seconds = from_units(current->startproject +
1535                                         current->length);
1536                                 for(Label *label = edl->labels->first;
1537                                         label;
1538                                         label = label->next)
1539                                 {
1540                                         if(label->position >= start_seconds &&
1541                                                 label->position < end_seconds)
1542                                         {
1543                                                 new_labels.append(label);
1544                                                 edl->labels->remove_pointer(label);
1545                                         }
1546                                 }
1547                         }
1548
1549 // Remove edit pointer
1550                         Edit *previous = current;
1551                         current = NEXT;
1552                         edits->remove_pointer(previous);
1553                 }
1554                 else
1555                 {
1556                         current = NEXT;
1557                 }
1558         }
1559
1560 // Insert pointers in random order
1561         while(new_edits.size())
1562         {
1563                 int index = rand() % new_edits.size();
1564                 Edit *edit = new_edits.get(index);
1565                 new_edits.remove_number(index);
1566                 if( !start_edit )
1567                         edits->insert_before(edits->first, edit);
1568                 else
1569                         edits->insert_after(start_edit, edit);
1570                 start_edit = edit;
1571
1572 // Recalculate start position
1573 // Save old position for moving labels
1574                 int64_t startproject1 = edit->startproject;
1575                 int64_t startproject2 = 0;
1576                 if(edit->previous)
1577                 {
1578                         edit->startproject =
1579                                 startproject2 =
1580                                 edit->previous->startproject + edit->previous->length;
1581                 }
1582                 else
1583                 {
1584                         edit->startproject = startproject2 = 0;
1585                 }
1586
1587
1588 // Insert label pointers
1589                 if(first_track && edl->session->labels_follow_edits)
1590                 {
1591                         double start_seconds1 = from_units(startproject1);
1592                         double end_seconds1 = from_units(startproject1 + edit->length);
1593                         double start_seconds2 = from_units(startproject2);
1594                         for(int i = new_labels.size() - 1; i >= 0; i--)
1595                         {
1596                                 Label *label = new_labels.get(i);
1597 // Was in old edit position
1598                                 if(label->position >= start_seconds1 &&
1599                                         label->position < end_seconds1)
1600                                 {
1601 // Move to new edit position
1602                                         double position = label->position -
1603                                                 start_seconds1 + start_seconds2;
1604                                         edl->labels->insert_label(position);
1605                                         new_labels.remove_object_number(i);
1606                                 }
1607                         }
1608                 }
1609
1610
1611         }
1612
1613         optimize();
1614
1615         if(first_track && edl->session->labels_follow_edits)
1616         {
1617                 edl->labels->optimize();
1618         }
1619 }
1620
1621 // exactly the same as shuffle_edits except for 1 line
1622 void Track::reverse_edits(double start, double end, int first_track)
1623 {
1624         ArrayList<Edit*> new_edits;
1625         ArrayList<Label*> new_labels;
1626         int64_t start_units = to_units(start, 0);
1627         int64_t end_units = to_units(end, 0);
1628 // Sample range of all edits selected
1629         //int64_t total_start_units = 0;
1630         //int64_t total_end_units = 0;
1631 // Edit before range
1632         Edit *start_edit = 0;
1633         int have_start_edit = 0;
1634
1635 // Move all edit pointers to list
1636         for(Edit *current = edits->first; current; )
1637         {
1638                 if(current->startproject >= start_units &&
1639                         current->startproject + current->length <= end_units)
1640                 {
1641                         if(!have_start_edit) start_edit = current->previous;
1642                         have_start_edit = 1;
1643                         //total_start_units = current->startproject;
1644                         //total_end_units = current->startproject + current->length;
1645                         new_edits.append(current);
1646
1647 // Move label pointers
1648                         if(first_track && edl->session->labels_follow_edits)
1649                         {
1650                                 double start_seconds = from_units(current->startproject);
1651                                 double end_seconds = from_units(current->startproject +
1652                                         current->length);
1653                                 for(Label *label = edl->labels->first;
1654                                         label;
1655                                         label = label->next)
1656                                 {
1657                                         if(label->position >= start_seconds &&
1658                                                 label->position < end_seconds)
1659                                         {
1660                                                 new_labels.append(label);
1661                                                 edl->labels->remove_pointer(label);
1662                                         }
1663                                 }
1664                         }
1665
1666 // Remove edit pointer
1667                         Edit *previous = current;
1668                         current = NEXT;
1669                         edits->remove_pointer(previous);
1670                 }
1671                 else
1672                 {
1673                         current = NEXT;
1674                 }
1675         }
1676
1677 // Insert pointers in reverse order
1678         while(new_edits.size())
1679         {
1680                 int index = new_edits.size() - 1;
1681                 Edit *edit = new_edits.get(index);
1682                 new_edits.remove_number(index);
1683                 if( !start_edit )
1684                         edits->insert_before(edits->first, edit);
1685                 else
1686                         edits->insert_after(start_edit, edit);
1687                 start_edit = edit;
1688
1689 // Recalculate start position
1690 // Save old position for moving labels
1691                 int64_t startproject1 = edit->startproject;
1692                 int64_t startproject2 = 0;
1693                 if(edit->previous)
1694                 {
1695                         edit->startproject =
1696                                 startproject2 =
1697                                 edit->previous->startproject + edit->previous->length;
1698                 }
1699                 else
1700                 {
1701                         edit->startproject = startproject2 = 0;
1702                 }
1703
1704
1705 // Insert label pointers
1706                 if(first_track && edl->session->labels_follow_edits)
1707                 {
1708                         double start_seconds1 = from_units(startproject1);
1709                         double end_seconds1 = from_units(startproject1 + edit->length);
1710                         double start_seconds2 = from_units(startproject2);
1711                         for(int i = new_labels.size() - 1; i >= 0; i--)
1712                         {
1713                                 Label *label = new_labels.get(i);
1714 // Was in old edit position
1715                                 if(label->position >= start_seconds1 &&
1716                                         label->position < end_seconds1)
1717                                 {
1718 // Move to new edit position
1719                                         double position = label->position -
1720                                                 start_seconds1 + start_seconds2;
1721                                         edl->labels->insert_label(position);
1722                                         new_labels.remove_object_number(i);
1723                                 }
1724                         }
1725                 }
1726
1727
1728         }
1729
1730         optimize();
1731
1732         if(first_track && edl->session->labels_follow_edits)
1733         {
1734                 edl->labels->optimize();
1735         }
1736 }
1737
1738 void Track::align_edits(double start,
1739         double end,
1740         ArrayList<double> *times)
1741 {
1742         int64_t start_units = to_units(start, 0);
1743         int64_t end_units = to_units(end, 0);
1744
1745 // If 1st track with data, times is empty & we need to collect the edit times.
1746         if(!times->size())
1747         {
1748                 for(Edit *current = edits->first; current; current = NEXT)
1749                 {
1750                         if(current->startproject >= start_units &&
1751                                 current->startproject + current->length <= end_units)
1752                         {
1753                                 times->append(from_units(current->startproject));
1754                         }
1755                 }
1756         }
1757         else
1758 // All other tracks get silence or cut to align the edits on the times.
1759         {
1760                 int current_time = 0;
1761                 for(Edit *current = edits->first;
1762                         current && current_time < times->size(); )
1763                 {
1764                         if(current->startproject >= start_units &&
1765                                 current->startproject + current->length <= end_units)
1766                         {
1767                                 int64_t desired_startunits = to_units(times->get(current_time), 0);
1768                                 int64_t current_startunits = current->startproject;
1769                                 current = NEXT;
1770
1771
1772                                 if(current_startunits < desired_startunits)
1773                                 {
1774 //printf("Track::align_edits %d\n", __LINE__);
1775                                         edits->paste_silence(current_startunits,
1776                                                 desired_startunits);
1777                                         shift_keyframes(current_startunits,
1778                                                 desired_startunits - current_startunits);
1779                                 }
1780                                 else
1781                                 if(current_startunits > desired_startunits)
1782                                 {
1783                                         edits->clear(desired_startunits,
1784                                                 current_startunits);
1785                                         if(edl->session->autos_follow_edits)
1786                                                 shift_keyframes(desired_startunits,
1787                                                         current_startunits - desired_startunits);
1788                                 }
1789
1790                                 current_time++;
1791                         }
1792                         else
1793                         {
1794                                 current = NEXT;
1795                         }
1796                 }
1797         }
1798
1799         optimize();
1800 }
1801
1802 int Track::purge_asset(Asset *asset)
1803 {
1804         return 0;
1805 }
1806
1807 int Track::asset_used(Asset *asset)
1808 {
1809         Edit* current_edit;
1810         int result = 0;
1811
1812         for(current_edit = edits->first; current_edit; current_edit = current_edit->next)
1813         {
1814                 if(current_edit->asset == asset)
1815                 {
1816                         result++;
1817                 }
1818         }
1819         return result;
1820 }
1821
1822 int Track::is_playable(int64_t position, int direction)
1823 {
1824         return 1;
1825 }
1826
1827
1828 int Track::plugin_used(int64_t position, int64_t direction)
1829 {
1830 //printf("Track::plugin_used 1 %d\n", this->plugin_set.total);
1831         for(int i = 0; i < this->plugin_set.total; i++)
1832         {
1833                 Plugin *current_plugin = get_current_plugin(position,
1834                         i,
1835                         direction,
1836                         0,
1837                         0);
1838
1839 //printf("Track::plugin_used 2 %p %d %d\n", current_plugin, current_plugin->on, current_plugin->plugin_type);
1840                 if(current_plugin &&
1841                         current_plugin->on &&
1842                         current_plugin->plugin_type != PLUGIN_NONE)
1843                 {
1844                         return 1;
1845                 }
1846         }
1847 //printf("Track::plugin_used 3 %p\n", current_plugin);
1848         return 0;
1849 }
1850
1851 // Audio is always rendered through VConsole
1852 int Track::direct_copy_possible(int64_t start, int direction, int use_nudge)
1853 {
1854         return 1;
1855 }
1856
1857 int64_t Track::to_units(double position, int round)
1858 {
1859         return (int64_t)position;
1860 }
1861
1862 double Track::to_doubleunits(double position)
1863 {
1864         return position;
1865 }
1866
1867 double Track::from_units(int64_t position)
1868 {
1869         return (double)position;
1870 }
1871
1872 int64_t Track::frame_align(int64_t position, int round)
1873 {
1874         if( data_type != TRACK_VIDEO && edl->session->cursor_on_frames )
1875                 position = to_units(edl->align_to_frame(from_units(position), round), round);
1876         return position;
1877 }
1878
1879 int Track::plugin_exists(Plugin *plugin)
1880 {
1881         for(int number = 0; number < plugin_set.size(); number++)
1882         {
1883                 PluginSet *ptr = plugin_set.get(number);
1884                 for(Plugin *current_plugin = (Plugin*)ptr->first;
1885                         current_plugin;
1886                         current_plugin = (Plugin*)current_plugin->next)
1887                 {
1888                         if(current_plugin == plugin) return 1;
1889                 }
1890         }
1891
1892         for(Edit *current = edits->first; current; current = NEXT)
1893         {
1894                 if(current->transition &&
1895                         (Plugin*)current->transition == plugin) return 1;
1896         }
1897
1898
1899         return 0;
1900 }
1901
1902 int Track::get_mixer_id()
1903 {
1904         if( mixer_id < 0 ) {
1905                 int v = 0;
1906                 for( Track *track=tracks->first; track!=0; track=track->next )
1907                         if( track->mixer_id > v ) v = track->mixer_id;
1908                 mixer_id = v + 1;
1909         }
1910         return mixer_id;
1911 }
1912