cinelerra-5.1/cinelerra/edits.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "aedit.h"
  23 #include "asset.h"
  24 #include "assets.h"
  25 #include "automation.h"
  26 #include "bcsignals.h"
  27 #include "cache.h"
  28 #include "clip.h"
  29 #include "edit.h"
  30 #include "edits.h"
  31 #include "edl.h"
  32 #include "edlsession.h"
  33 #include "file.h"
  34 #include "filexml.h"
  35 #include "filesystem.h"
  36 #include "localsession.h"
  37 #include "nestededls.h"
  38 #include "plugin.h"
  39 #include "strategies.inc"
  40 #include "track.h"
  41 #include "transition.h"
  42 #include "transportque.inc"
  43
  44 #include <string.h>
  45
  46 Edits::Edits(EDL *edl, Track *track)
  47  : List<Edit>()
  48 {
  49         this->edl = edl;
  50         this->track = track;
  51 }
  52
  53 Edits::~Edits()
  54 {
  55 }
  56
  57
  58 void Edits::equivalent_output(Edits *edits, int64_t *result)
  59 {
  60 // For the case of plugin sets, a new plugin set may be created with
  61 // plugins only starting after 0.  We only want to restart brender at
  62 // the first plugin in this case.
  63         for(Edit *current = first, *that_current = edits->first;
  64                 current || that_current;
  65                 current = NEXT,
  66                 that_current = that_current->next)
  67         {
  68 //printf("Edits::equivalent_output 1 %d\n", *result);
  69                 if(!current && that_current)
  70                 {
  71                         int64_t position1 = length();
  72                         int64_t position2 = that_current->startproject;
  73                         if(*result < 0 || *result > MIN(position1, position2))
  74                                 *result = MIN(position1, position2);
  75                         break;
  76                 }
  77                 else
  78                 if(current && !that_current)
  79                 {
  80                         int64_t position1 = edits->length();
  81                         int64_t position2 = current->startproject;
  82                         if(*result < 0 || *result > MIN(position1, position2))
  83                                 *result = MIN(position1, position2);
  84                         break;
  85                 }
  86                 else
  87                 {
  88 //printf("Edits::equivalent_output 2 %d\n", *result);
  89                         current->equivalent_output(that_current, result);
  90 //printf("Edits::equivalent_output 3 %d\n", *result);
  91                 }
  92         }
  93 }
  94
  95 void Edits::copy_from(Edits *edits)
  96 {
  97         while(last) delete last;
  98         for(Edit *current = edits->first; current; current = NEXT)
  99         {
 100                 Edit *new_edit = append(create_edit());
 101                 new_edit->copy_from(current);
 102         }
 103 }
 104
 105
 106 Edits& Edits::operator=(Edits& edits)
 107 {
 108 printf("Edits::operator= 1\n");
 109         copy_from(&edits);
 110         return *this;
 111 }
 112
 113
 114 void Edits::insert_asset(Asset *asset,
 115         EDL *nested_edl,
 116         int64_t length,
 117         int64_t position,
 118         int track_number)
 119 {
 120         Edit *new_edit = insert_new_edit(position);
 121
 122         new_edit->nested_edl = nested_edl;
 123         new_edit->asset = asset;
 124         new_edit->startsource = 0;
 125         new_edit->startproject = position;
 126         new_edit->length = length;
 127
 128         if(nested_edl)
 129         {
 130                 if(track->data_type == TRACK_AUDIO)
 131                         new_edit->channel = track_number % nested_edl->session->audio_channels;
 132                 else
 133                         new_edit->channel = 0;
 134         }
 135
 136         if(asset && !nested_edl)
 137         {
 138                 if(asset->audio_data)
 139                         new_edit->channel = track_number % asset->channels;
 140                 else
 141                 if(asset->video_data)
 142                         new_edit->channel = track_number % asset->layers;
 143         }
 144
 145 //printf("Edits::insert_asset %d %d\n", new_edit->channel, new_edit->length);
 146         for(Edit *current = new_edit->next; current; current = NEXT)
 147         {
 148                 current->startproject += length;
 149         }
 150 }
 151
 152 void Edits::insert_edits(Edits *source_edits,
 153         int64_t position,
 154         int64_t min_length,
 155         int edit_autos)
 156 {
 157         //int64_t clipboard_end = position + min_length;
 158 // Length pasted so far
 159         int64_t source_len = 0;
 160
 161 // Fill region between end of edit table and beginning of pasted segment
 162 // with silence.  Can't call from insert_new_edit because it's recursive.
 163         if(position > length())
 164         {
 165                 paste_silence(length(), position);
 166         }
 167
 168
 169         for(Edit *source_edit = source_edits->first;
 170                 source_edit;
 171                 source_edit = source_edit->next)
 172         {
 173                 EDL *dest_nested_edl = 0;
 174                 if(source_edit->nested_edl)
 175                         dest_nested_edl = edl->nested_edls->get_copy(source_edit->nested_edl);
 176
 177 // Update Assets
 178                 Asset *dest_asset = 0;
 179                 if(source_edit->asset)
 180                         dest_asset = edl->assets->update(source_edit->asset);
 181 // Open destination area
 182                 Edit *dest_edit = insert_new_edit(position + source_edit->startproject);
 183
 184                 dest_edit->copy_from(source_edit);
 185                 dest_edit->asset = dest_asset;
 186                 dest_edit->nested_edl = dest_nested_edl;
 187                 dest_edit->startproject = position + source_edit->startproject;
 188
 189
 190
 191 // Shift keyframes in source edit to their position in the
 192 // destination edit for plugin case
 193                 if(edit_autos) dest_edit->shift_keyframes(position);
 194
 195 // Shift following edits and keyframes in following edits by length
 196 // in current source edit.
 197                 for(Edit *future_edit = dest_edit->next;
 198                         future_edit;
 199                         future_edit = future_edit->next)
 200                 {
 201                         future_edit->startproject += dest_edit->length;
 202                         future_edit->shift_keyframes(dest_edit->length);
 203                 }
 204
 205                 source_len += source_edit->length;
 206         }
 207
 208
 209
 210
 211 // Fill remaining clipboard length with silence
 212         if(source_len < min_length)
 213         {
 214 //printf("Edits::insert_edits %d\n", __LINE__);
 215                 paste_silence(position + source_len, position + min_length);
 216         }
 217 }
 218
 219
 220 // Native units
 221 // Can't paste silence in here because it's used by paste_silence.
 222 Edit* Edits::insert_new_edit(int64_t position)
 223 {
 224 //printf("Edits::insert_new_edit 1\n");
 225         Edit *current = split_edit(position);
 226         if(current) current = PREVIOUS;
 227
 228 //printf("Edits::insert_new_edit 1\n");
 229         Edit *new_edit = create_edit();
 230 //printf("Edits::insert_new_edit 1\n");
 231         insert_after(current, new_edit);
 232         new_edit->startproject = position;
 233 //printf("Edits::insert_new_edit 2\n");
 234         return new_edit;
 235 }
 236
 237 Edit* Edits::split_edit(int64_t position)
 238 {
 239 // Get edit containing position
 240         Edit *edit = editof(position, PLAY_FORWARD, 0);
 241         if(!edit) return 0;
 242 // Split would have created a 0 length
 243 //      if(edit->startproject == position) return edit;
 244 // Create anyway so the return value comes before position
 245
 246         Edit *new_edit = create_edit();
 247         insert_after(edit, new_edit);
 248         new_edit->copy_from(edit);
 249         new_edit->length = new_edit->startproject + new_edit->length - position;
 250         edit->length = position - edit->startproject;
 251         new_edit->startproject = position;
 252         new_edit->startsource += edit->length;
 253
 254 // Decide what to do with the transition
 255         if(edit->length && edit->transition) {
 256                 delete new_edit->transition;
 257                 new_edit->transition = 0;
 258         }
 259
 260         if(edit->transition && edit->transition->length > edit->length)
 261                 edit->transition->length = edit->length;
 262         if(new_edit->transition && new_edit->transition->length > new_edit->length)
 263                 new_edit->transition->length = new_edit->length;
 264         return new_edit;
 265 }
 266
 267 int Edits::save(FileXML *xml, const char *output_path)
 268 {
 269         copy(0, length(), xml, output_path);
 270         return 0;
 271 }
 272
 273 void Edits::resample(double old_rate, double new_rate)
 274 {
 275         for(Edit *current = first; current; current = NEXT)
 276         {
 277                 current->startproject = Units::to_int64((double)current->startproject /
 278                         old_rate *
 279                         new_rate);
 280                 if(PREVIOUS) PREVIOUS->length = current->startproject - PREVIOUS->startproject;
 281                 current->startsource = Units::to_int64((double)current->startsource /
 282                         old_rate *
 283                         new_rate);
 284                 if(!NEXT) current->length = Units::to_int64((double)current->length /
 285                         old_rate *
 286                         new_rate);
 287                 if(current->transition)
 288                 {
 289                         current->transition->length = Units::to_int64(
 290                                 (double)current->transition->length /
 291                                 old_rate *
 292                                 new_rate);
 293                 }
 294                 current->resample(old_rate, new_rate);
 295         }
 296 }
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311 int Edits::optimize()
 312 {
 313         int result = 1;
 314         Edit *current;
 315
 316
 317 //printf("Edits::optimize %d\n", __LINE__);
 318 // Sort edits by starting point
 319         while(result)
 320         {
 321                 result = 0;
 322
 323                 for(current = first; current; current = NEXT)
 324                 {
 325                         Edit *next_edit = NEXT;
 326
 327                         if(next_edit && next_edit->startproject < current->startproject)
 328                         {
 329                                 swap(next_edit, current);
 330                                 result = 1;
 331                         }
 332                 }
 333         }
 334
 335 // Insert silence between edits which aren't consecutive
 336         for(current = last; current; current = current->previous)
 337         {
 338                 if(current->previous)
 339                 {
 340                         Edit *previous_edit = current->previous;
 341                         if(current->startproject -
 342                                 previous_edit->startproject -
 343                                 previous_edit->length > 0)
 344                         {
 345                                 Edit *new_edit = create_edit();
 346                                 insert_before(current, new_edit);
 347                                 new_edit->startproject = previous_edit->startproject + previous_edit->length;
 348                                 new_edit->length = current->startproject -
 349                                         previous_edit->startproject -
 350                                         previous_edit->length;
 351                         }
 352                 }
 353                 else
 354                 if(current->startproject > 0)
 355                 {
 356                         Edit *new_edit = create_edit();
 357                         insert_before(current, new_edit);
 358                         new_edit->length = current->startproject;
 359                 }
 360         }
 361
 362         result = 1;
 363         while(result) {
 364                 result = 0;
 365
 366 // delete 0 length edits
 367                 for( current = first; !result && current; ) {
 368                         Edit* next = current->next;
 369                         if( current->length == 0 ) {
 370                                 if( next && current->transition && !next->transition) {
 371                                         next->transition = current->transition;
 372                                         next->transition->edit = next;
 373                                         current->transition = 0;
 374                                 }
 375                                 delete current;
 376                                 result = 1;
 377                                 break;
 378                         }
 379                         current = next;
 380                 }
 381
 382 //printf("Edits::optimize %d result=%d\n", __LINE__, result);
 383 // merge same files or transitions
 384                 if(track->data_type == TRACK_SUBTITLE ) continue;
 385
 386                 for(current = first; !result && current && current->next; ) {
 387                         Edit *next_edit = current->next;
 388
 389 // printf("Edits::optimize %d %lld=%lld %d=%d %p=%p %p=%p\n",
 390 // __LINE__, current->startsource + current->length, next_edit->startsource,
 391 // current->channel, next_edit->channel, current->asset, next_edit->asset,
 392 // current->nested_edl, next_edit->nested_edl);
 393
 394 // both edits are silence & not a plugin
 395 // source channels are identical, assets are identical
 396                         if( (current->silence() && next_edit->silence() && !current->is_plugin) ||
 397                             (current->startsource + current->length == next_edit->startsource &&
 398                              current->channel == next_edit->channel &&
 399                              current->asset == next_edit->asset &&
 400                              current->nested_edl == next_edit->nested_edl)) {
 401 //printf("Edits::optimize %d\n", __LINE__);
 402                                 current->length += next_edit->length;
 403                                 remove(next_edit);
 404                                 result = 1;
 405                                 break;
 406                         }
 407
 408                         current = current->next;
 409                 }
 410
 411                 if(last && last->silence()) {
 412                         delete last;
 413                         result = 1;
 414                 }
 415         }
 416
 417 //track->dump();
 418         return 0;
 419 }
 420
 421
 422 // ===================================== file operations
 423
 424 void Edits::load(FileXML *file, int track_offset)
 425 {
 426         int64_t startproject = 0;
 427
 428         while( last ) delete last;
 429
 430         while( !file->read_tag() ) {
 431 //printf("Edits::load 1 %s\n", file->tag.get_title());
 432                 if(!strcmp(file->tag.get_title(), "EDIT")) {
 433                         load_edit(file, startproject, track_offset);
 434                 }
 435                 else if(!strcmp(file->tag.get_title(), "/EDITS"))
 436                         break;
 437         }
 438
 439 //track->dump();
 440         optimize();
 441 }
 442
 443 int Edits::load_edit(FileXML *file, int64_t &startproject, int track_offset)
 444 {
 445         Edit* current = append_new_edit();
 446         current->load_properties(file, startproject);
 447
 448         startproject += current->length;
 449
 450         while( !file->read_tag() ) {
 451                 if(file->tag.title_is("NESTED_EDL")) {
 452                         char path[BCTEXTLEN];
 453                         path[0] = 0;
 454                         file->tag.get_property("SRC", path);
 455 //printf("Edits::load_edit %d path=%s\n", __LINE__, path);
 456                         if(path[0] != 0) {
 457                                 current->nested_edl = edl->nested_edls->get(path);
 458                         }
 459 // printf("Edits::load_edit %d nested_edl->path=%s\n",
 460 // __LINE__,
 461 // current->nested_edl->path);
 462                 }
 463                 else if(file->tag.title_is("FILE")) {
 464                         char filename[BCTEXTLEN];
 465                         filename[0] = 0;
 466                         file->tag.get_property("SRC", filename);
 467 // Extend path
 468                         if(filename[0] != 0) {
 469                                 char directory[BCTEXTLEN], edl_directory[BCTEXTLEN];
 470                                 FileSystem fs;
 471                                 fs.set_current_dir("");
 472                                 fs.extract_dir(directory, filename);
 473                                 if(!strlen(directory)) {
 474                                         fs.extract_dir(edl_directory, file->filename);
 475                                         fs.join_names(directory, edl_directory, filename);
 476                                         strcpy(filename, directory);
 477                                 }
 478                                 current->asset = edl->assets->get_asset(filename);
 479                         }
 480                         else {
 481                                 current->asset = 0;
 482                         }
 483 //printf("Edits::load_edit 5\n");
 484                 }
 485                 else if(file->tag.title_is("TRANSITION")) {
 486                         current->transition = new Transition(edl, current, "",
 487                                 track->to_units(edl->session->default_transition_length, 1));
 488                                 current->transition->load_xml(file);
 489                 }
 490                 else if(file->tag.title_is("/EDIT"))
 491                         break;
 492         }
 493
 494 //printf("Edits::load_edit %d\n", __LINE__);
 495 //track->dump();
 496 //printf("Edits::load_edit %d\n", __LINE__);
 497         return 0;
 498 }
 499
 500 // ============================================= accounting
 501
 502 int64_t Edits::length()
 503 {
 504         return last ? last->startproject + last->length : 0;
 505 }
 506
 507
 508
 509 Edit* Edits::editof(int64_t position, int direction, int use_nudge)
 510 {
 511         Edit *current = 0;
 512         if(use_nudge && track) position += track->nudge;
 513
 514         if(direction == PLAY_FORWARD) {
 515                 for(current = last; current; current = PREVIOUS) {
 516                         if(current->startproject <= position && current->startproject + current->length > position)
 517                                 return current;
 518                 }
 519         }
 520         else
 521         if(direction == PLAY_REVERSE) {
 522                 for(current = first; current; current = NEXT) {
 523                         if(current->startproject < position && current->startproject + current->length >= position)
 524                                 return current;
 525                 }
 526         }
 527
 528         return 0;     // return 0 on failure
 529 }
 530
 531 Edit* Edits::get_playable_edit(int64_t position, int use_nudge)
 532 {
 533         Edit *current;
 534         if(track && use_nudge) position += track->nudge;
 535
 536 // Get the current edit
 537         for(current = first; current; current = NEXT) {
 538                 if(current->startproject <= position &&
 539                         current->startproject + current->length > position)
 540                         break;
 541         }
 542
 543 // Get the edit's asset
 544 // TODO: descend into nested EDLs
 545         if(current) {
 546                 if(!current->asset)
 547                         current = 0;
 548         }
 549
 550         return current;     // return 0 on failure
 551 }
 552
 553 // ================================================ editing
 554
 555
 556
 557 int Edits::copy(int64_t start, int64_t end, FileXML *file, const char *output_path)
 558 {
 559         Edit *current_edit;
 560
 561         file->tag.set_title("EDITS");
 562         file->append_tag();
 563         file->append_newline();
 564
 565         for(current_edit = first; current_edit; current_edit = current_edit->next)
 566         {
 567                 current_edit->copy(start, end, file, output_path);
 568         }
 569
 570         file->tag.set_title("/EDITS");
 571         file->append_tag();
 572         file->append_newline();
 573         return 0;
 574 }
 575
 576
 577
 578 void Edits::clear(int64_t start, int64_t end)
 579 {
 580         if( start >= end ) return;
 581
 582         Edit* edit1 = editof(start, PLAY_FORWARD, 0);
 583         Edit* edit2 = editof(end, PLAY_FORWARD, 0);
 584         Edit* current_edit;
 585
 586         if(end == start) return;        // nothing selected
 587         if(!edit1 && !edit2) return;       // nothing selected
 588
 589
 590         if(!edit2) {                // edit2 beyond end of track
 591                 edit2 = last;
 592                 end = this->length();
 593         }
 594
 595         if(edit1 != edit2)
 596         {
 597 // in different edits
 598
 599 //printf("Edits::clear 3.5 %d %d %d %d\n", edit1->startproject, edit1->length, edit2->startproject, edit2->length);
 600                 edit1->length = start - edit1->startproject;
 601                 edit2->length -= end - edit2->startproject;
 602                 edit2->startsource += end - edit2->startproject;
 603                 edit2->startproject += end - edit2->startproject;
 604
 605 // delete
 606                 for(current_edit = edit1->next; current_edit && current_edit != edit2;) {
 607                         Edit* next = current_edit->next;
 608                         remove(current_edit);
 609                         current_edit = next;
 610                 }
 611 // shift
 612                 for(current_edit = edit2; current_edit; current_edit = current_edit->next) {
 613                         current_edit->startproject -= end - start;
 614                 }
 615         }
 616         else {
 617 // in same edit. paste_edit depends on this
 618 // create a new edit
 619                 current_edit = split_edit(start);
 620                 if( current_edit ) {
 621                         current_edit->length -= end - start;
 622                         current_edit->startsource += end - start;
 623 // shift
 624                         while( (current_edit=current_edit->next) != 0 ) {
 625                                 current_edit->startproject -= end - start;
 626                         }
 627                 }
 628         }
 629
 630         optimize();
 631 }
 632
 633 // Used by edit handle and plugin handle movement but plugin handle movement
 634 // can only effect other plugins.
 635 void Edits::clear_recursive(int64_t start, int64_t end,
 636         int edit_edits, int edit_labels, int edit_plugins, int edit_autos,
 637         Edits *trim_edits)
 638 {
 639 //printf("Edits::clear_recursive 1\n");
 640         track->clear(start, end,
 641                 edit_edits, edit_labels, edit_plugins, edit_autos, 0,
 642                 trim_edits);
 643 }
 644
 645
 646 int Edits::clear_handle(double start, double end,
 647         int edit_plugins, int edit_autos, double &distance)
 648 {
 649         Edit *current_edit;
 650
 651         distance = 0.0; // if nothing is found, distance is 0!
 652         for(current_edit = first;
 653                 current_edit && current_edit->next;
 654                 current_edit = current_edit->next) {
 655
 656
 657
 658                 if(current_edit->asset && current_edit->next->asset) {
 659
 660                         if(current_edit->asset->equivalent(*current_edit->next->asset,
 661                                 0, 0)) {
 662
 663 // Got two consecutive edits in same source
 664                                 if(edl->equivalent(track->from_units(current_edit->next->startproject),
 665                                         start)) {
 666 // handle selected
 667                                         int length = -current_edit->length;
 668                                         current_edit->length = current_edit->next->startsource - current_edit->startsource;
 669                                         length += current_edit->length;
 670
 671 // Lengthen automation
 672                                         if(edit_autos)
 673                                                 track->automation->paste_silence(current_edit->next->startproject,
 674                                                         current_edit->next->startproject + length);
 675
 676 // Lengthen effects
 677                                         if(edit_plugins)
 678                                                 track->shift_effects(current_edit->next->startproject,
 679                                                         length,
 680                                                         edit_autos);
 681
 682                                         for(current_edit = current_edit->next; current_edit; current_edit = current_edit->next)
 683                                         {
 684                                                 current_edit->startproject += length;
 685                                         }
 686
 687                                         distance = track->from_units(length);
 688                                         optimize();
 689                                         break;
 690                                 }
 691                         }
 692                 }
 693         }
 694
 695         return 0;
 696 }
 697
 698 int Edits::modify_handles(double oldposition, double newposition, int currentend,
 699         int edit_mode, int edit_edits, int edit_labels, int edit_plugins, int edit_autos,
 700         Edits *trim_edits)
 701 {
 702         int result = 0;
 703         Edit *current_edit;
 704
 705 //printf("Edits::modify_handles 1 %d %f %f\n", currentend, newposition, oldposition);
 706         if(currentend == 0) {
 707 // left handle
 708                 for(current_edit = first; current_edit && !result;) {
 709                         if(edl->equivalent(track->from_units(current_edit->startproject),
 710                                 oldposition)) {
 711 // edit matches selection
 712 //printf("Edits::modify_handles 3 %f %f\n", newposition, oldposition);
 713                                 oldposition = track->from_units(current_edit->startproject);
 714                                 result = 1;
 715
 716                                 if(newposition >= oldposition) {
 717 //printf("Edits::modify_handle 1 %s %f %f\n", track->title, oldposition, newposition);
 718 // shift start of edit in
 719                                         current_edit->shift_start_in(edit_mode,
 720                                                 track->to_units(newposition, 0),
 721                                                 track->to_units(oldposition, 0),
 722                                                 edit_edits,
 723                                                 edit_labels,
 724                                                 edit_plugins,
 725                                                 edit_autos,
 726                                                 trim_edits);
 727                                 }
 728                                 else
 729                                 {
 730 //printf("Edits::modify_handle 2 %s\n", track->title);
 731 // move start of edit out
 732                                         current_edit->shift_start_out(edit_mode,
 733                                                 track->to_units(newposition, 0),
 734                                                 track->to_units(oldposition, 0),
 735                                                 edit_edits,
 736                                                 edit_labels,
 737                                                 edit_plugins,
 738                                                 edit_autos,
 739                                                 trim_edits);
 740                                 }
 741                         }
 742
 743                         if(!result) current_edit = current_edit->next;
 744                 }
 745         }
 746         else {
 747 // right handle selected
 748                 for(current_edit = first; current_edit && !result;) {
 749                         if(edl->equivalent(track->from_units(current_edit->startproject) +
 750                                 track->from_units(current_edit->length), oldposition)) {
 751                 oldposition = track->from_units(current_edit->startproject) +
 752                                         track->from_units(current_edit->length);
 753                                 result = 1;
 754
 755 //printf("Edits::modify_handle 3\n");
 756                                 if(newposition <= oldposition) {
 757 // shift end of edit in
 758 //printf("Edits::modify_handle 4\n");
 759                                         current_edit->shift_end_in(edit_mode,
 760                                                 track->to_units(newposition, 0),
 761                                                 track->to_units(oldposition, 0),
 762                                                 edit_edits,
 763                                                 edit_labels,
 764                                                 edit_plugins,
 765                                                 edit_autos,
 766                                                 trim_edits);
 767 //printf("Edits::modify_handle 5\n");
 768                                 }
 769                                 else
 770                                 {
 771 // move end of edit out
 772 //printf("Edits::modify_handle 6\n");
 773                                         current_edit->shift_end_out(edit_mode,
 774                                                 track->to_units(newposition, 0),
 775                                                 track->to_units(oldposition, 0),
 776                                                 edit_edits,
 777                                                 edit_labels,
 778                                                 edit_plugins,
 779                                                 edit_autos,
 780                                                 trim_edits);
 781 //printf("Edits::modify_handle 7\n");
 782                                 }
 783                         }
 784
 785                         if(!result) current_edit = current_edit->next;
 786 //printf("Edits::modify_handle 8\n");
 787                 }
 788         }
 789
 790         optimize();
 791         return 0;
 792 }
 793
 794
 795 void Edits::paste_silence(int64_t start, int64_t end)
 796 {
 797         Edit *new_edit = editof(start, PLAY_FORWARD, 0);
 798         if (!new_edit) return;
 799
 800         if( !new_edit->silence() ) {
 801                 new_edit = insert_new_edit(start);
 802                 new_edit->length = end - start;
 803         }
 804         else
 805                 new_edit->length += end - start;
 806
 807         for(Edit *current = new_edit->next; current; current = NEXT) {
 808                 current->startproject += end - start;
 809         }
 810
 811         return;
 812 }
 813
 814 Edit *Edits::create_silence(int64_t start, int64_t end)
 815 {
 816         Edit *new_edit = insert_new_edit(start);
 817         new_edit->length = end - start;
 818         for(Edit *current = new_edit->next; current; current = NEXT) {
 819                 current->startproject += end - start;
 820         }
 821         return new_edit;
 822 }
 823
 824 Edit* Edits::shift(int64_t position, int64_t difference)
 825 {
 826         Edit *new_edit = split_edit(position);
 827
 828         for(Edit *current = first; current; current = NEXT) {
 829                 if(current->startproject >= position) {
 830                         current->shift(difference);
 831                 }
 832         }
 833         return new_edit;
 834 }
 835
 836
 837 void Edits::shift_keyframes_recursive(int64_t position, int64_t length)
 838 {
 839         track->shift_keyframes(position, length);
 840 }
 841
 842 void Edits::shift_effects_recursive(int64_t position, int64_t length, int edit_autos)
 843 {
 844         track->shift_effects(position, length, edit_autos);
 845 }
 846