cinelerra-5.1/cinelerra/proxy.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2015 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 "assets.h"
  23 #include "bcsignals.h"
  24 #include "clip.h"
  25 #include "confirmsave.h"
  26 #include "cstrdup.h"
  27 #include "edl.h"
  28 #include "edlsession.h"
  29 #include "errorbox.h"
  30 #include "file.h"
  31 #include "filesystem.h"
  32 #include "formattools.h"
  33 #include "language.h"
  34 #include "mainprogress.h"
  35 #include "mainundo.h"
  36 #include "mutex.h"
  37 #include "mwindow.h"
  38 #include "mwindowgui.h"
  39 #include "overlayframe.h"
  40 #include "preferences.h"
  41 #include "proxy.h"
  42 #include "theme.h"
  43
  44 #define WIDTH 400
  45 #define HEIGHT 320
  46 #define MAX_SCALE 16
  47
  48 ProxyMenuItem::ProxyMenuItem(MWindow *mwindow)
  49  : BC_MenuItem(_("Proxy settings..."),  _("Alt-P"), 'p')
  50 {
  51         this->mwindow = mwindow;
  52         set_alt();
  53 }
  54
  55 void ProxyMenuItem::create_objects()
  56 {
  57         thread = new ProxyThread(mwindow);
  58 }
  59
  60 int ProxyMenuItem::handle_event()
  61 {
  62         mwindow->gui->unlock_window();
  63         thread->start();
  64         mwindow->gui->lock_window("ProxyMenuItem::handle_event");
  65
  66         return 1;
  67 }
  68
  69 ProxyThread::ProxyThread(MWindow *mwindow)
  70 {
  71         this->mwindow = mwindow;
  72         gui = 0;
  73         asset = new Asset;
  74         progress = 0;
  75         counter_lock = new Mutex("ProxyThread::counter_lock");
  76         bzero(size_text, sizeof(char*) * MAX_SIZES);
  77         bzero(size_factors, sizeof(int) * MAX_SIZES);
  78         total_sizes = 0;
  79 }
  80 ProxyThread::~ProxyThread()
  81 {
  82         for( int i=0; i<MAX_SIZES; ++i )
  83                 if( size_text[i] ) delete [] size_text[i];
  84 }
  85
  86 BC_Window* ProxyThread::new_gui()
  87 {
  88         asset->format = FILE_FFMPEG;
  89         asset->load_defaults(mwindow->defaults, "PROXY_", 1, 1, 0, 0, 0);
  90         mwindow->gui->lock_window("ProxyThread::new_gui");
  91         int x = mwindow->gui->get_abs_cursor_x(0) - WIDTH / 2;
  92         int y = mwindow->gui->get_abs_cursor_y(0) - HEIGHT / 2;
  93
  94         gui = new ProxyWindow(mwindow, this, x, y);
  95         gui->create_objects();
  96         mwindow->gui->unlock_window();
  97         return gui;
  98 }
  99
 100 void ProxyThread::scale_to_text(char *string, int scale)
 101 {
 102         calculate_sizes();
 103         strcpy(string, size_text[0]);
 104         for( int i = 0; i < total_sizes; i++ ) {
 105                 if( scale == size_factors[i] ) {
 106                         strcpy(string, size_text[i]);
 107                         break;
 108                 }
 109         }
 110 }
 111
 112
 113 void ProxyThread::calculate_sizes()
 114 {
 115 // delete old values
 116         for( int i = 0; i < MAX_SIZES; i++ ) {
 117                 if( size_text[i] ) delete [] size_text[i];
 118         }
 119         bzero(size_text, sizeof(char*) * MAX_SIZES);
 120         bzero(size_factors, sizeof(int) * MAX_SIZES);
 121
 122         int orig_w = mwindow->edl->session->output_w * orig_scale;
 123         int orig_h = mwindow->edl->session->output_h * orig_scale;
 124         total_sizes = 0;
 125
 126         size_text[0] = cstrdup(_("Original size"));
 127         size_factors[0] = 1;
 128
 129         int current_factor = 2;
 130         total_sizes = 1;
 131         for( current_factor = 2; current_factor < MAX_SCALE; current_factor++ ) {
 132                 if( current_factor * (orig_w / current_factor) == orig_w &&
 133                         current_factor * (orig_h / current_factor) == orig_h ) {
 134 //printf("ProxyThread::calculate_sizes %d\n", current_factor);
 135                         char string[BCTEXTLEN];
 136                         sprintf(string, "1/%d", current_factor);
 137                         size_text[total_sizes] = cstrdup(string);
 138                         size_factors[total_sizes] = current_factor;
 139                         total_sizes++;
 140                 }
 141
 142                 current_factor++;
 143         }
 144 }
 145
 146 void ProxyThread::handle_close_event(int result)
 147 {
 148         asset->save_defaults(mwindow->defaults, "PROXY_", 1, 1, 0, 0, 0);
 149
 150         if( !result ) {
 151                 to_proxy();
 152         }
 153 }
 154
 155 void ProxyThread::to_proxy()
 156 {
 157 // test for new files
 158         ArrayList<char *> confirm_paths;
 159         confirm_paths.set_array_delete();
 160 // all proxy assets
 161         ArrayList<Indexable*> proxy_assets;
 162 // assets which must be created
 163         ArrayList<Asset*> needed_assets;
 164 // original assets
 165         ArrayList<Indexable*> orig_assets;
 166 // original assets which match the needed_assets
 167         ArrayList<Asset*> needed_orig_assets;
 168         Asset *proxy_asset = 0;
 169         Asset *orig_asset = 0;
 170
 171         mwindow->edl->Garbage::add_user();
 172         mwindow->save_backup();
 173         mwindow->undo->update_undo_before(_("proxy"), this);
 174
 175 // revert project to original size from current size
 176         if( mwindow->edl->session->proxy_scale > 1 ) {
 177                 for( orig_asset = mwindow->edl->assets->first;
 178                         orig_asset;
 179                         orig_asset = orig_asset->next ) {
 180                         char new_path[BCTEXTLEN];
 181                         to_proxy_path(new_path, orig_asset, mwindow->edl->session->proxy_scale);
 182
 183 // test if proxy asset was already added to proxy assets
 184                         int got_it = 0;
 185                         proxy_asset = 0;
 186                         for( int i = 0; i < proxy_assets.size(); i++ ) {
 187                                 if( !strcmp(proxy_assets.get(i)->path, new_path) ) {
 188                                         got_it = 1;
 189                                         break;
 190                                 }
 191                         }
 192
 193 // add pointer to existing EDL asset if it exists
 194 // EDL won't delete it unless it's the same pointer.
 195                         if( !got_it ) {
 196                                 proxy_asset = mwindow->edl->assets->get_asset(new_path);
 197
 198                                 if( proxy_asset ) {
 199                                         proxy_assets.append(proxy_asset);
 200                                         proxy_asset->Garbage::add_user();
 201
 202                                         orig_assets.append(orig_asset);
 203                                         orig_asset->Garbage::add_user();
 204                                 }
 205
 206                         }
 207                 }
 208
 209 // convert from the proxy assets to the original assets
 210                 mwindow->set_proxy(1, &proxy_assets, &orig_assets);
 211
 212 // remove the proxy assets
 213                 mwindow->remove_assets_from_project(0, 0, &proxy_assets, NULL);
 214
 215
 216                 for( int i = 0; i < proxy_assets.size(); i++ ) {
 217                         proxy_assets.get(i)->Garbage::remove_user();
 218                 }
 219                 proxy_assets.remove_all();
 220
 221                 for( int i = 0; i < orig_assets.size(); i++ ) {
 222                         orig_assets.get(i)->Garbage::remove_user();
 223                 }
 224                 orig_assets.remove_all();
 225         }
 226
 227 // convert to new size if not original size
 228         if( new_scale != 1 ) {
 229                 for( orig_asset = mwindow->edl->assets->first;
 230                         orig_asset;
 231                         orig_asset = orig_asset->next ) {
 232                         if( orig_asset->video_data ) {
 233                                 char new_path[BCTEXTLEN];
 234                                 to_proxy_path(new_path, orig_asset, new_scale);
 235 // add to proxy_assets & orig_assets if it isn't already there.
 236                                 int got_it = 0;
 237                                 proxy_asset = 0;
 238                                 for( int i = 0; i < proxy_assets.size(); i++ ) {
 239                                         if( !strcmp(proxy_assets.get(i)->path, new_path) ) {
 240                                                 got_it = 1;
 241                                                 proxy_asset = (Asset*)proxy_assets.get(i);
 242                                                 break;
 243                                         }
 244                                 }
 245
 246                                 if( !got_it ) {
 247                                         proxy_asset = new Asset;
 248 // new compression parameters
 249                                         proxy_asset->copy_format(asset, 0);
 250                                         proxy_asset->update_path(new_path);
 251                                         proxy_asset->audio_data = 0;
 252                                         proxy_asset->video_data = 1;
 253                                         proxy_asset->layers = 1;
 254                                         proxy_asset->width = orig_asset->width / new_scale;
 255                                         proxy_asset->height = orig_asset->height / new_scale;
 256                                         proxy_asset->frame_rate = orig_asset->frame_rate;
 257                                         proxy_asset->video_length = orig_asset->video_length;
 258
 259                                         proxy_assets.append(proxy_asset);
 260                                         orig_asset->add_user();
 261                                         orig_assets.append(orig_asset);
 262                                 }
 263
 264 // test if proxy file exists.
 265                                 int exists = 0;
 266                                 FILE *fd = fopen(new_path, "r");
 267                                 if( fd ) {
 268                                         got_it = 1;
 269                                         exists = 1;
 270                                         fclose(fd);
 271
 272                                         FileSystem fs;
 273 // test if proxy file is newer than original.
 274                                         if( fs.get_date(new_path) < fs.get_date(asset->path) ) {
 275                                                 got_it = 0;
 276                                         }
 277                                 }
 278                                 else {
 279 // proxy doesn't exist
 280                                         got_it = 0;
 281                                 }
 282
 283                                 if( !got_it ) {
 284 // prompt user to overwrite
 285                                         if( exists ) {
 286                                                 confirm_paths.append(cstrdup(new_path));
 287                                         }
 288
 289                                         needed_assets.append(proxy_asset);
 290                                         proxy_asset->add_user();
 291                                         needed_orig_assets.append(orig_asset);
 292                                         orig_asset->add_user();
 293                                 }
 294 //printf("ProxyThread::handle_close_event %d %s\n", __LINE__, new_path);
 295                         }
 296                 }
 297
 298 // test for existing files
 299                 int result = 0;
 300                 if( confirm_paths.size() ) {
 301                         result = ConfirmSave::test_files(mwindow, &confirm_paths);
 302                         confirm_paths.remove_all_objects();
 303                 }
 304
 305                 if( !result ) {
 306                         int canceled = 0;
 307                         failed = 0;
 308
 309 // create proxy assets which don't already exist
 310                         if( needed_orig_assets.size() > 0 ) {
 311                                 int64_t total_len = 0;
 312                                 for( int i = 0; i < needed_orig_assets.size(); i++ )
 313                                         total_len += needed_orig_assets.get(i)->video_length;
 314 // start progress bar.  MWindow is locked inside this
 315                                 progress = mwindow->mainprogress->
 316                                         start_progress(_("Creating proxy files..."), total_len);
 317                                 total_rendered = 0;
 318
 319                                 ProxyFarm engine(mwindow,
 320                                         this,
 321                                         &needed_assets,
 322                                         &needed_orig_assets);
 323                                 engine.process_packages();
 324
 325 printf("failed=%d canceled=%d\n", failed, progress->is_cancelled());
 326
 327         // stop progress bar
 328                                 canceled = progress->is_cancelled();
 329                                 progress->stop_progress();
 330                                 delete progress;
 331                                 progress = 0;
 332
 333                                 if( failed && !canceled ) {
 334                                         ErrorBox error_box(PROGRAM_NAME ": Error",
 335                                                 mwindow->gui->get_abs_cursor_x(1),
 336                                                 mwindow->gui->get_abs_cursor_y(1));
 337                                         error_box.create_objects(_("Error making proxy."));
 338                                         error_box.raise_window();
 339                                         error_box.run_window();
 340                                 }
 341                         }
 342
 343 // resize project
 344                         if( !failed && !canceled ) {
 345                                 mwindow->set_proxy(new_scale, &orig_assets, &proxy_assets);
 346                         }
 347                 }
 348
 349                 for( int i = 0; i < proxy_assets.size(); i++ ) {
 350                         proxy_assets.get(i)->Garbage::remove_user();
 351                 }
 352
 353                 for( int i = 0; i < orig_assets.size(); i++ ) {
 354                         orig_assets.get(i)->Garbage::remove_user();
 355                 }
 356
 357                 for( int i = 0; i < needed_assets.size(); i++ ) {
 358                         needed_assets.get(i)->Garbage::remove_user();
 359                 }
 360
 361                 for( int i = 0; i < needed_orig_assets.size(); i++ ) {
 362                         needed_orig_assets.get(i)->Garbage::remove_user();
 363                 }
 364         }
 365
 366         mwindow->undo->update_undo_after(_("proxy"), LOAD_ALL);
 367
 368         mwindow->edl->Garbage::remove_user();
 369
 370         mwindow->restart_brender();
 371
 372         mwindow->gui->lock_window("ProxyThread::to_proxy");
 373         mwindow->update_project(LOAD_ALL);
 374         mwindow->gui->unlock_window();
 375 }
 376
 377
 378 void ProxyThread::to_proxy_path(char *new_path, Asset *asset, int scale)
 379 {
 380         strcpy(new_path, asset->path);
 381         char prxy[BCTEXTLEN];
 382         sprintf(prxy, ".proxy%d", scale);
 383 // path is already a proxy
 384         if( strstr(new_path, prxy) ) return;
 385         int len = strlen(new_path);
 386 // insert proxy prxy
 387         char *ptr = strrchr(new_path, '.');
 388         if( ptr ) {
 389                 char *cp = new_path + len;
 390                 int n = strlen(prxy);
 391                 char *bp = cp + n;
 392                 for( *bp=0; cp>ptr; ) *--bp = *--cp;
 393                 for( cp= prxy+n; bp>ptr; ) *--bp = *--cp;
 394 //printf("ProxyThread::to_proxy_path %d %s %s\n", __LINE__, new_path), asset->path);
 395         }
 396         else
 397                 strcpy(new_path+len, prxy);
 398 }
 399
 400 void ProxyThread::from_proxy_path(char *new_path, Asset *asset, int scale)
 401 {
 402         char prxy[BCTEXTLEN];
 403         sprintf(prxy, ".proxy%d", scale);
 404         strcpy(new_path, asset->path);
 405         char *ptr = strstr(asset->path, prxy);
 406         if( !ptr ) return;
 407         int n = strlen(prxy);
 408         for( char *cp=ptr+n; --n>=0; ++ptr,++cp ) *ptr = *cp;
 409         *ptr = 0;
 410 }
 411
 412 void ProxyThread::update_progress()
 413 {
 414         counter_lock->lock();
 415         total_rendered++;
 416         counter_lock->unlock();
 417         progress->update(total_rendered);
 418 }
 419
 420 int ProxyThread::is_canceled()
 421 {
 422         return progress->is_cancelled();
 423 }
 424
 425
 426
 427 ProxyWindow::ProxyWindow(MWindow *mwindow, ProxyThread *thread, int x, int y)
 428  : BC_Window(_(PROGRAM_NAME ": Proxy settings"), x, y, WIDTH, HEIGHT,
 429                 -1, -1, 0, 0, 1)
 430 {
 431         this->mwindow = mwindow;
 432         this->thread = thread;
 433         format_tools = 0;
 434 }
 435
 436 ProxyWindow::~ProxyWindow()
 437 {
 438         lock_window("ProxyWindow::~ProxyWindow");
 439         delete format_tools;
 440         unlock_window();
 441 }
 442
 443
 444 void ProxyWindow::create_objects()
 445 {
 446         lock_window("ProxyWindow::create_objects");
 447
 448         int margin = mwindow->theme->widget_border;
 449         int x = margin;
 450         int y = margin;
 451         thread->orig_scale =
 452                 thread->new_scale =
 453                 mwindow->edl->session->proxy_scale;
 454
 455         BC_Title *text;
 456         add_subwindow(text = new BC_Title(x, y,
 457                 _("What size should the project\n"
 458                   "be scaled to for editing?")));
 459         y += text->get_h() * 2 + margin;
 460
 461
 462         add_subwindow(text = new BC_Title(x, y, _("Scale factor:")));
 463         x += text->get_w() + margin;
 464
 465
 466         thread->calculate_sizes();
 467         int popupmenu_w = BC_PopupMenu::calculate_w(get_text_width(MEDIUMFONT, thread->size_text[0]));
 468         add_subwindow(scale_factor = new ProxyMenu(mwindow, this, x, y, popupmenu_w, ""));
 469         for( int i = 0; i < thread->total_sizes; i++ ) {
 470                 scale_factor->add_item(new BC_MenuItem(thread->size_text[i]));
 471         }
 472         x += scale_factor->get_w() + margin;
 473
 474         ProxyTumbler *tumbler;
 475         add_subwindow(tumbler = new ProxyTumbler(mwindow, this, x, y));
 476
 477         x = margin;
 478         y += tumbler->get_h() + margin;
 479         ProxyReset *reset;
 480         add_subwindow(reset = new ProxyReset(mwindow, this, x, y));
 481
 482         y += reset->get_h() * 2 + margin;
 483         x = margin;
 484         add_subwindow(text = new BC_Title(x, y, _("New project dimensions: ")));
 485         x += text->get_w() + margin;
 486         add_subwindow(new_dimensions = new BC_Title(x, y, ""));
 487
 488         x = margin;
 489         y += new_dimensions->get_h() * 2 + margin;
 490
 491
 492         format_tools = new FormatTools(mwindow, this, thread->asset);
 493         format_tools->create_objects(x, y, 0, 1, 0, 0, 0, 1, 0, 1, // skip the path
 494                 0, 0);
 495
 496         update();
 497
 498         add_subwindow(new BC_OKButton(this));
 499         add_subwindow(new BC_CancelButton(this));
 500         show_window(1);
 501         unlock_window();
 502 }
 503
 504 void ProxyWindow::update()
 505 {
 506 // preview the new size
 507         char string[BCTEXTLEN];
 508 //printf("ProxyWindow::update %d %d %d %d %d\n",
 509 // __LINE__, mwindow->edl->session->output_w, mwindow->edl->session->output_h,
 510 // thread->orig_scale, thread->new_scale);
 511         int orig_w = mwindow->edl->session->output_w * thread->orig_scale;
 512         int orig_h = mwindow->edl->session->output_h * thread->orig_scale;
 513         sprintf(string, "%dx%d",
 514                 orig_w / thread->new_scale, orig_h / thread->new_scale);
 515         new_dimensions->update(string);
 516         thread->scale_to_text(string, thread->new_scale);
 517         scale_factor->set_text(string);
 518 }
 519
 520
 521 ProxyReset::ProxyReset(MWindow *mwindow, ProxyWindow *pwindow, int x, int y)
 522  : BC_GenericButton(x, y, _("Reset"))
 523 {
 524         this->mwindow = mwindow;
 525         this->pwindow = pwindow;
 526 }
 527
 528 int ProxyReset::handle_event()
 529 {
 530         pwindow->thread->new_scale = pwindow->thread->orig_scale;
 531         pwindow->update();
 532         return 1;
 533 }
 534
 535
 536 ProxyMenu::ProxyMenu(MWindow *mwindow, ProxyWindow *pwindow,
 537                 int x, int y, int w, const char *text)
 538  : BC_PopupMenu(x, y, w, text, 1)
 539 {
 540         this->mwindow = mwindow;
 541         this->pwindow = pwindow;
 542 }
 543
 544 int ProxyMenu::handle_event()
 545 {
 546         for( int i = 0; i < pwindow->thread->total_sizes; i++ ) {
 547                 if( !strcmp(get_text(), pwindow->thread->size_text[i]) ) {
 548                         pwindow->thread->new_scale = pwindow->thread->size_factors[i];
 549                         pwindow->update();
 550                         break;
 551                 }
 552         }
 553         return 1;
 554 }
 555
 556
 557 ProxyTumbler::ProxyTumbler(MWindow *mwindow, ProxyWindow *pwindow, int x, int y)
 558  : BC_Tumbler(x, y, 0)
 559 {
 560         this->mwindow = mwindow;
 561         this->pwindow = pwindow;
 562 }
 563
 564 int ProxyTumbler::handle_up_event()
 565 {
 566         if( pwindow->thread->new_scale > 1 ) {
 567                 int i;
 568                 for( i = 0; i < pwindow->thread->total_sizes; i++ ) {
 569                         if( pwindow->thread->new_scale == pwindow->thread->size_factors[i] ) {
 570                                 i--;
 571                                 pwindow->thread->new_scale = pwindow->thread->size_factors[i];
 572                                 pwindow->update();
 573                                 return 1;
 574                         }
 575                 }
 576         }
 577
 578         return 0;
 579 }
 580
 581 int ProxyTumbler::handle_down_event()
 582 {
 583         int i;
 584         for( i = 0; i < pwindow->thread->total_sizes - 1; i++ ) {
 585                 if( pwindow->thread->new_scale == pwindow->thread->size_factors[i] ) {
 586                         i++;
 587                         pwindow->thread->new_scale = pwindow->thread->size_factors[i];
 588                         pwindow->update();
 589                         return 1;
 590                 }
 591         }
 592
 593         return 0;
 594 }
 595
 596
 597 ProxyPackage::ProxyPackage()
 598  : LoadPackage()
 599 {
 600 }
 601
 602 ProxyClient::ProxyClient(MWindow *mwindow, ProxyThread *thread, ProxyFarm *server)
 603  : LoadClient(server)
 604 {
 605         this->mwindow = mwindow;
 606         this->thread = thread;
 607 }
 608
 609 void ProxyClient::process_package(LoadPackage *ptr)
 610 {
 611         ProxyPackage *package = (ProxyPackage*)ptr;
 612         if( thread->failed ) return;
 613
 614         File src_file;
 615         File dst_file;
 616         EDL *edl = mwindow->edl;
 617         Preferences *preferences = mwindow->preferences;
 618         int processors = 1;
 619
 620         int result;
 621         src_file.set_processors(processors);
 622         src_file.set_preload(edl->session->playback_preload);
 623         src_file.set_subtitle(edl->session->decode_subtitles ?
 624                 edl->session->subtitle_number : -1);
 625         src_file.set_interpolate_raw(edl->session->interpolate_raw);
 626         src_file.set_white_balance_raw(edl->session->white_balance_raw);
 627
 628 //printf("%s %s\n", package->orig_asset->path, package->proxy_asset->path);
 629
 630
 631         result = src_file.open_file(preferences, package->orig_asset, 1, 0);
 632         if( result ) {
 633 // go to the next asset if the reader fails
 634 //              thread->failed = 1;
 635                 return;
 636         }
 637
 638         dst_file.set_processors(processors);
 639         result = dst_file.open_file(preferences, package->proxy_asset, 0, 1);
 640         if( result ) {
 641                 thread->failed = 1;
 642                 return;
 643         }
 644
 645         dst_file.start_video_thread(1, edl->session->color_model,
 646                         processors > 1 ? 2 : 1, 0);
 647
 648         VFrame src_frame(0, -1,
 649                 package->orig_asset->width, package->orig_asset->height,
 650                 edl->session->color_model, -1);
 651
 652         OverlayFrame scaler(processors);
 653
 654         for( int64_t i = 0; i < package->orig_asset->video_length &&
 655              !thread->failed && !thread->is_canceled(); i++ ) {
 656                 src_file.set_video_position(i, 0);
 657                 result = src_file.read_frame(&src_frame);
 658 //printf("result=%d\n", result);
 659
 660                 if( result ) {
 661 // go to the next asset if the reader fails
 662 //                      thread->failed = 1;
 663                         break;
 664                 }
 665
 666 // have to write after getting the video buffer or it locks up
 667                 VFrame ***dst_frames = dst_file.get_video_buffer();
 668                 VFrame *dst_frame = dst_frames[0][0];
 669                 scaler.overlay(dst_frame, &src_frame,
 670                         0, 0, src_frame.get_w(), src_frame.get_h(),
 671                         0, 0, dst_frame->get_w(), dst_frame->get_h(),
 672                         1.0, TRANSFER_REPLACE, NEAREST_NEIGHBOR);
 673                 result = dst_file.write_video_buffer(1);
 674                 if( result ) {
 675 // only fail if the writer fails
 676                         thread->failed = 1;
 677                         break;
 678                 }
 679                 else {
 680                         thread->update_progress();
 681                 }
 682         }
 683 }
 684
 685
 686 ProxyFarm::ProxyFarm(MWindow *mwindow, ProxyThread *thread,
 687         ArrayList<Asset*> *proxy_assets, ArrayList<Asset*> *orig_assets)
 688  : LoadServer(MIN(mwindow->preferences->processors, proxy_assets->size()),
 689         proxy_assets->size())
 690 {
 691         this->mwindow = mwindow;
 692         this->thread = thread;
 693         this->proxy_assets = proxy_assets;
 694         this->orig_assets = orig_assets;
 695 }
 696
 697 void ProxyFarm::init_packages()
 698 {
 699         for( int i = 0; i < get_total_packages(); i++ ) {
 700         ProxyPackage *package = (ProxyPackage*)get_package(i);
 701         package->proxy_asset = proxy_assets->get(i);
 702                 package->orig_asset = orig_assets->get(i);
 703         }
 704 }
 705
 706 LoadClient* ProxyFarm::new_client()
 707 {
 708         return new ProxyClient(mwindow, thread, this);
 709 }
 710
 711 LoadPackage* ProxyFarm::new_package()
 712 {
 713         return new ProxyPackage;
 714 }
 715