cinelerra-5.1/cinelerra/packagerenderer.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 "arender.h"
  23 #include "asset.h"
  24 #include "auto.h"
  25 #include "bctimer.h"
  26 #include "brender.h"
  27 #include "cache.h"
  28 #include "clip.h"
  29 #include "cwindow.h"
  30 #include "cwindowgui.h"
  31 #include "edit.h"
  32 #include "edits.h"
  33 #include "edl.h"
  34 #include "edlsession.h"
  35 #include "errorbox.h"
  36 #include "file.h"
  37 #include "filesystem.h"
  38 #include "indexfile.h"
  39 #include "language.h"
  40 #include "mwindow.h"
  41 #include "mwindowgui.h"
  42 #include "packagerenderer.h"
  43 #include "playabletracks.h"
  44 #include "playbackconfig.h"
  45 #include "pluginserver.h"
  46 #include "preferences.h"
  47 #include "render.h"
  48 #include "renderengine.h"
  49 #include "renderfarmfsserver.h"
  50 #include "samples.h"
  51 #include "sighandler.h"
  52 #include "tracks.h"
  53 #include "transportque.h"
  54 #include "vedit.h"
  55 #include "vframe.h"
  56 #include "videodevice.h"
  57 #include "vrender.h"
  58
  59
  60
  61
  62
  63
  64
  65 RenderPackage::RenderPackage()
  66 {
  67         audio_start = 0;
  68         audio_end = 0;
  69         video_start = 0;
  70         video_end = 0;
  71         audio_do = 0;
  72         video_do = 0;
  73         path[0] = 0;
  74         done = 0;
  75         use_brender = 0;
  76 }
  77
  78 RenderPackage::~RenderPackage()
  79 {
  80 }
  81
  82
  83
  84
  85
  86
  87
  88
  89 // Used by RenderFarm and in the future, Render, to do packages.
  90 PackageRenderer::PackageRenderer()
  91 {
  92         command = 0;
  93         audio_cache = 0;
  94         video_cache = 0;
  95         aconfig = 0;
  96         vconfig = 0;
  97         timer = new Timer;
  98         frames_per_second = 0;
  99 }
 100
 101 PackageRenderer::~PackageRenderer()
 102 {
 103         delete command;
 104         delete audio_cache;
 105         delete video_cache;
 106         delete vconfig;
 107         delete aconfig;
 108 }
 109
 110 // PackageRenderer::initialize happens only once for every node when doing rendering session
 111 // This is not called for each package!
 112
 113 int PackageRenderer::initialize(MWindow *mwindow,
 114                 EDL *edl,
 115                 Preferences *preferences,
 116                 Asset *default_asset)
 117 {
 118         int result = 0;
 119
 120         this->mwindow = mwindow;
 121         this->edl = edl;
 122         this->preferences = preferences;
 123         this->default_asset = default_asset;
 124
 125
 126 //printf("PackageRenderer::initialize %d\n", preferences->processors);
 127         command = new TransportCommand;
 128         command->command = NORMAL_FWD;
 129         command->get_edl()->copy_all(edl);
 130         command->change_type = CHANGE_ALL;
 131         command->set_playback_range(edl);
 132
 133         default_asset->frame_rate = command->get_edl()->session->frame_rate;
 134         default_asset->sample_rate = command->get_edl()->session->sample_rate;
 135         default_asset->aspect_ratio = (double)command->get_edl()->session->aspect_w /
 136                 command->get_edl()->session->aspect_h;
 137         result = Render::check_asset(edl, *default_asset);
 138
 139         audio_cache = new CICache(preferences);
 140         video_cache = new CICache(preferences);
 141
 142         //PlaybackConfig *config = command->get_edl()->session->playback_config;
 143         aconfig = new AudioOutConfig();
 144         vconfig = new VideoOutConfig;
 145
 146         return result;
 147 }
 148
 149 void PackageRenderer::create_output()
 150 {
 151         FileSystem fs;
 152         asset = new Asset(*default_asset);
 153
 154         if(!get_master() && preferences->renderfarm_vfs && preferences->use_renderfarm)
 155                 sprintf(asset->path, RENDERFARM_FS_PREFIX "%s", package->path);
 156         else
 157                 strcpy(asset->path, package->path);
 158
 159         file = new File;
 160
 161         file->set_processors(preferences->processors);
 162
 163 //printf("PackageRenderer::create_output %d\n", __LINE__);
 164         result = file->open_file(preferences,
 165                                         asset,
 166                                         0,
 167                                         1);
 168 //printf("PackageRenderer::create_output %d %d\n", __LINE__, result);
 169
 170         if(result && mwindow)
 171         {
 172 // open failed
 173                 char string[BCTEXTLEN];
 174                 sprintf(string, _("Couldn't open %s"), asset->path);
 175                 ErrorBox error(_(PROGRAM_NAME ": Error"),
 176                         mwindow->gui->get_abs_cursor_x(1),
 177                         mwindow->gui->get_abs_cursor_y(1));
 178                 error.create_objects(string);
 179                 error.run_window();
 180         }
 181         else
 182         if(mwindow)
 183         {
 184                 mwindow->sighandler->push_file(file);
 185                 IndexFile::delete_index(preferences, asset);
 186         }
 187 //printf("PackageRenderer::create_output %d %d\n", __LINE__, result);
 188 }
 189
 190 void PackageRenderer::create_engine()
 191 {
 192 // Fix audio buffers to 1 second
 193         audio_read_length = command->get_edl()->session->sample_rate;
 194         command->get_edl()->session->playback_config->aconfig->fragment_size = audio_read_length;
 195
 196         aconfig->fragment_size = audio_read_length;
 197
 198
 199         render_engine = new RenderEngine(0,
 200                 preferences,
 201                 0,
 202                 0,
 203                 0);
 204         render_engine->set_acache(audio_cache);
 205         render_engine->set_vcache(video_cache);
 206         render_engine->arm_command(command);
 207
 208         if(package->use_brender)
 209         {
 210                 audio_preroll = Units::to_int64((double)preferences->brender_preroll /
 211                         default_asset->frame_rate *
 212                         default_asset->sample_rate);
 213                 video_preroll = preferences->brender_preroll;
 214         }
 215         else
 216         {
 217                 audio_preroll = Units::to_int64(preferences->render_preroll *
 218                         default_asset->sample_rate);
 219                 video_preroll = Units::to_int64(preferences->render_preroll *
 220                         default_asset->frame_rate);
 221         }
 222         audio_position = package->audio_start - audio_preroll;
 223         if( audio_position < 0 )
 224         {
 225                 audio_preroll += audio_position;
 226                 audio_position = 0;
 227         }
 228         video_position = package->video_start - video_preroll;
 229         if( video_position < 0 )
 230         {
 231                 video_preroll += video_position;
 232                 video_position = 0;
 233         }
 234
 235
 236 //      PRINT_TRACE
 237
 238 // Create output buffers
 239         if(asset->audio_data)
 240         {
 241                 file->start_audio_thread(audio_read_length,
 242                         preferences->processors > 1 ? 2 : 1);
 243         }
 244
 245 //      PRINT_TRACE
 246
 247         if(asset->video_data)
 248         {
 249                 compressed_output = new VFrame;
 250 // The write length needs to correlate with the processor count because
 251 // it is passed to the file handler which usually processes frames simultaneously.
 252                 video_write_length = preferences->processors;
 253                 video_write_position = 0;
 254                 direct_frame_copying = 0;
 255
 256
 257 //printf("PackageRenderer::create_engine %d\n", __LINE__);
 258                 file->start_video_thread(video_write_length,
 259                         command->get_edl()->session->color_model,
 260                         preferences->processors > 1 ? 2 : 1,
 261                         0);
 262 //printf("PackageRenderer::create_engine %d\n", __LINE__);
 263
 264
 265                 if(mwindow)
 266                 {
 267                         video_device = new VideoDevice;
 268                         video_device->open_output(vconfig,
 269                                 command->get_edl()->session->frame_rate,
 270                                 command->get_edl()->session->output_w,
 271                                 command->get_edl()->session->output_h,
 272                                 mwindow->cwindow->gui->canvas,
 273                                 0);
 274 //                      video_device->start_playback();
 275                 }
 276         }
 277
 278
 279         playable_tracks = new PlayableTracks(render_engine->get_edl(),
 280                 video_position,
 281                 PLAY_FORWARD,
 282                 TRACK_VIDEO,
 283                 1);
 284
 285 }
 286
 287
 288
 289
 290 void PackageRenderer::do_audio()
 291 {
 292 //printf("PackageRenderer::do_audio %d\n", __LINE__);
 293 // Do audio data
 294         if(asset->audio_data)
 295         {
 296                 audio_output = file->get_audio_buffer();
 297 // Zero unused channels in output vector
 298                 for(int i = 0; i < MAX_CHANNELS; i++)
 299                 {
 300                         audio_output_ptr[i] = (i < asset->channels) ?
 301                                 audio_output[i] :
 302                                 0;
 303                 }
 304
 305
 306
 307 // Call render engine
 308
 309                 result = render_engine->arender->process_buffer(audio_output_ptr,
 310                         audio_read_length,
 311                         audio_position);
 312
 313
 314
 315 // Fix buffers for preroll
 316                 int64_t output_length = audio_read_length;
 317                 if(audio_preroll > 0)
 318                 {
 319                         if(audio_preroll >= output_length)
 320                                 output_length = 0;
 321                         else
 322                         {
 323                                 output_length -= audio_preroll;
 324                                 for(int i = 0; i < MAX_CHANNELS; i++)
 325                                 {
 326                                         if(audio_output_ptr[i])
 327                                         {
 328                                                 double *data = audio_output_ptr[i]->get_data();
 329                                                 for(int j = 0; j < output_length; j++)
 330                                                 {
 331                                                         data[j] = data[j + audio_read_length - output_length];
 332                                                 }
 333                                         }
 334                                 }
 335                         }
 336 //printf("PackageRenderer::do_audio 4\n");
 337
 338                         audio_preroll -= audio_read_length;
 339                 }
 340
 341 // Must perform writes even if 0 length so get_audio_buffer doesn't block
 342                 result |= file->write_audio_buffer(output_length);
 343         }
 344
 345         audio_position += audio_read_length;
 346 //printf("PackageRenderer::do_audio %d\n", __LINE__);
 347 }
 348
 349
 350 void PackageRenderer::do_video()
 351 {
 352         const int debug = 0;
 353 // Do video data
 354         if(asset->video_data)
 355         {
 356 // get the absolute video position from the audio position
 357                 int64_t video_end = video_position + video_read_length;
 358
 359                 if(video_end > package->video_end)
 360                         video_end = package->video_end;
 361
 362                 while(video_position < video_end && !result)
 363                 {
 364 // Try to copy the compressed frame directly from the input to output files
 365 //printf("PackageRenderer::do_video 2 video_position=%ld\n", video_position);
 366                         if(direct_frame_copy(command->get_edl(),
 367                                 video_position,
 368                                 file,
 369                                 result))
 370                         {
 371 // Direct frame copy failed.
 372 // Switch back to background compression
 373                                 if(direct_frame_copying)
 374                                 {
 375
 376                                         file->start_video_thread(video_write_length,
 377                                                 command->get_edl()->session->color_model,
 378                                                 preferences->processors > 1 ? 2 : 1,
 379                                                 0);
 380 //printf("PackageRenderer::do_video %d %d\n", __LINE__, preferences->processors);
 381                                         direct_frame_copying = 0;
 382                                 }
 383
 384 // Try to use the rendering engine to write the frame.
 385 // Get a buffer for background writing.
 386
 387                                 if(video_write_position == 0)
 388                                         video_output = file->get_video_buffer();
 389
 390                                 if(debug) printf("PackageRenderer::do_video %d %p\n", __LINE__, video_output);
 391                                 if(debug) printf("PackageRenderer::do_video %d %p\n", __LINE__, video_output[0]);
 392
 393
 394
 395
 396 // Construct layered output buffer
 397                                 video_output_ptr = video_output[0][video_write_position];
 398                                 if(debug)
 399                                 {
 400                                         printf("PackageRenderer::do_video %d %p\n", __LINE__, video_output_ptr);
 401                                         printf("PackageRenderer::do_video %d %d\n", __LINE__, result);
 402                                         video_output_ptr->dump();
 403                                 }
 404
 405                                 if(!result)
 406                                         result = render_engine->vrender->process_buffer(
 407                                                 video_output_ptr,
 408                                                 video_position,
 409                                                 0);
 410
 411
 412                                 if(debug) printf("PackageRenderer::do_video %d %d\n", __LINE__, result);
 413
 414                                 if(!result &&
 415                                         mwindow &&
 416                                         video_device->output_visible())
 417                                 {
 418 // Vector for video device
 419                                         VFrame *preview_output;
 420
 421                                         video_device->new_output_buffer(&preview_output,
 422                                                 command->get_edl()->session->color_model);
 423
 424                                         preview_output->copy_from(video_output_ptr);
 425                                         video_device->write_buffer(preview_output,
 426                                                 command->get_edl());
 427                                 }
 428
 429                                 if(debug) printf("PackageRenderer::do_video %d %d\n", __LINE__, result);
 430
 431
 432 // Don't write to file
 433                                 if(video_preroll && !result)
 434                                 {
 435                                         video_preroll--;
 436 // Keep the write position at 0 until ready to write real frames
 437                                         result = file->write_video_buffer(0);
 438                                         video_write_position = 0;
 439                                 }
 440                                 else
 441                                 if(!result)
 442                                 {
 443 // Set background rendering parameters
 444 // Allow us to skip sections of the output file by setting the frame number.
 445 // Used by background render and render farm.
 446 //printf("PackageRenderer::do_video %d %jd\n", __LINE__, video_position);
 447                                         video_output_ptr->set_number(video_position);
 448                                         video_write_position++;
 449
 450                                         if(video_write_position >= video_write_length)
 451                                         {
 452                                                 result = file->write_video_buffer(video_write_position);
 453 //printf("PackageRenderer::do_video %d %jd\n", __LINE__, video_position);
 454 // Update the brender map after writing the files.
 455                                                 if(package->use_brender)
 456                                                 {
 457 //printf("PackageRenderer::do_video 10\n");
 458                                                         for(int i = 0; i < video_write_position && !result; i++)
 459                                                         {
 460                                                                 result = set_video_map(video_position + 1 - video_write_position + i,
 461                                                                         BRender::RENDERED);
 462                                                         }
 463 //printf("PackageRenderer::do_video 11 %d\n", result);
 464                                                 }
 465                                                 video_write_position = 0;
 466                                         }
 467                                 }
 468 //printf("PackageRenderer::do_video %d %jd\n", __LINE__, video_position);
 469
 470
 471                         }
 472
 473                         video_position++;
 474                         if(!result && get_result()) result = 1;
 475                         if(!result && progress_cancelled()) result = 1;
 476                 }
 477         }
 478         else
 479         {
 480                 video_position += video_read_length;
 481         }
 482 }
 483
 484
 485 void PackageRenderer::stop_engine()
 486 {
 487         delete render_engine;
 488         delete playable_tracks;
 489 }
 490
 491
 492 void PackageRenderer::stop_output()
 493 {
 494         int error = 0;
 495         if(asset->audio_data)
 496         {
 497 // stop file I/O
 498                 file->stop_audio_thread();
 499         }
 500
 501         if(asset->video_data)
 502         {
 503                 delete compressed_output;
 504                 if(video_write_position)
 505                         file->write_video_buffer(video_write_position);
 506                 if(package->use_brender)
 507                 {
 508                         for(int i = 0; i < video_write_position && !error; i++)
 509                         {
 510                                 error = set_video_map(video_position - video_write_position + i,
 511                                         BRender::RENDERED);
 512                         }
 513                 }
 514                 video_write_position = 0;
 515                 if(!error) file->stop_video_thread();
 516                 if(mwindow)
 517                 {
 518 //                      video_device->stop_playback();
 519                         video_device->close_all();
 520                         delete video_device;
 521                 }
 522         }
 523 }
 524
 525
 526 void PackageRenderer::close_output()
 527 {
 528         if(mwindow)
 529                 mwindow->sighandler->pull_file(file);
 530         file->close_file();
 531         delete file;
 532         asset->Garbage::remove_user();
 533 }
 534
 535 // Aborts and returns 1 if an error is encountered.
 536 int PackageRenderer::render_package(RenderPackage *package)
 537 {
 538         int audio_done = 0;
 539         int video_done = 0;
 540         int samples_rendered = 0;
 541         const int debug = 0;
 542
 543
 544         result = 0;
 545         this->package = package;
 546
 547 // printf(
 548 // "PackageRenderer::render_package: audio s=%jd l=%jd video s=%jd l=%jd\n",
 549 //      package->audio_start,
 550 //      package->audio_end - package->audio_start,
 551 //      package->video_start,
 552 //      package->video_end - package->video_start);
 553
 554         if(debug) PRINT_TRACE
 555
 556         if( package->video_do ) default_asset->video_data = 1;
 557         if( package->audio_do ) default_asset->audio_data = 1;
 558         Render::check_asset(edl, *default_asset);
 559
 560 // FIXME: The design that we only get EDL once does not give us neccessary flexiblity to do things the way they should be donek
 561         default_asset->video_data = package->video_do;
 562         default_asset->audio_data = package->audio_do;
 563         Render::check_asset(edl, *default_asset);
 564
 565         create_output();
 566         if(debug) PRINT_TRACE
 567
 568         if(!asset->video_data) video_done = 1;
 569         if(!asset->audio_data) audio_done = 1;
 570
 571 // Create render engine
 572         if(!result)
 573         {
 574 if(debug) PRINT_TRACE
 575                 create_engine();
 576 if(debug) PRINT_TRACE
 577
 578
 579 // Main loop
 580                 timer->update();
 581                 total_samples_rendered = 0;
 582                 while((!audio_done || !video_done) && !result)
 583                 {
 584                         int need_audio = 0, need_video = 0;
 585
 586
 587
 588
 589 // Calculate lengths to process.  Audio fragment is constant.
 590                         if(!audio_done)
 591                         {
 592                                 if(audio_position + audio_read_length >= package->audio_end)
 593                                 {
 594                                         audio_done = 1;
 595                                         audio_read_length = package->audio_end - audio_position;
 596                                 }
 597
 598                                 samples_rendered = audio_read_length;
 599                                 need_audio = 1;
 600                         }
 601
 602 //printf("PackageRenderer::render_package 6 %d\n", samples_rendered);
 603
 604                         if(!video_done)
 605                         {
 606                                 if(audio_done)
 607                                 {
 608 //                                      video_read_length = package->video_end - video_position;
 609 // // Packetize video length so progress gets updated
 610 //                                      video_read_length = (int)MIN(asset->frame_rate, video_read_length);
 611 //                                      video_read_length = MAX(video_read_length, 30);
 612                                         video_read_length = 1;
 613                                 }
 614                                 else
 615 // Guide video with audio
 616                                 {
 617                                         video_read_length = Units::to_int64(
 618                                                 (double)(audio_position + audio_read_length) /
 619                                                 asset->sample_rate *
 620                                                 asset->frame_rate) -
 621                                                 video_position;
 622                                 }
 623
 624 // Clamp length
 625                                 if(video_position + video_read_length >= package->video_end)
 626                                 {
 627                                         video_done = 1;
 628                                         video_read_length = package->video_end - video_position;
 629                                 }
 630
 631 // Calculate samples rendered for progress bar.
 632                                 if(audio_done)
 633                                         samples_rendered = Units::round((double)video_read_length /
 634                                                 asset->frame_rate *
 635                                                 asset->sample_rate);
 636
 637                                 need_video = 1;
 638                         }
 639                         if(debug) PRINT_TRACE
 640
 641                         if(debug) printf("PackageRenderer::render_package 1 %d %jd %jd\n",
 642                                         result, audio_read_length, video_read_length);
 643                         if(need_video && !result) do_video();
 644                         if(debug) printf("PackageRenderer::render_package %d %d %d\n",
 645                                         __LINE__, result, samples_rendered);
 646                         if(need_audio && !result) do_audio();
 647
 648
 649                         if(debug) PRINT_TRACE
 650                         if(!result)
 651                         {
 652 // Calculate frames per second for the renderfarm table.
 653                                 total_samples_rendered += samples_rendered;
 654                                 if(!video_done && timer->get_difference() > 30000)
 655                                 {
 656                                         frames_per_second = (double)total_samples_rendered *
 657                                                 asset->frame_rate /
 658                                                 asset->sample_rate /
 659                                                 ((double)timer->get_difference() / 1000);
 660                                 }
 661                                 set_progress(samples_rendered);
 662                         }
 663                         if(debug) PRINT_TRACE
 664
 665
 666
 667
 668
 669                         if(!result && progress_cancelled()) result = 1;
 670                         if(debug) PRINT_TRACE
 671
 672 // printf("PackageRenderer::render_package 10 %d %d %d %d\n",
 673 // audio_read_length, video_read_length, samples_rendered, result);
 674                         if(result)
 675                                 set_result(result);
 676                         else
 677                                 result = get_result();
 678                 }
 679
 680 // Final FPS readout
 681                 frames_per_second = (double)(package->video_end - package->video_start) /
 682                         ((double)timer->get_difference() / 1000);
 683
 684
 685 //PRINT_TRACE
 686                 stop_engine();
 687 //PRINT_TRACE
 688
 689                 stop_output();
 690 //PRINT_TRACE
 691
 692
 693         }
 694
 695
 696 //PRINT_TRACE
 697
 698         close_output();
 699
 700 //PRINT_TRACE
 701
 702         set_result(result);
 703 //PRINT_TRACE
 704
 705
 706
 707         return result;
 708 }
 709
 710
 711
 712
 713
 714
 715
 716
 717 // Try to copy the compressed frame directly from the input to output files
 718 // Return 1 on failure and 0 on success
 719 int PackageRenderer::direct_frame_copy(EDL *edl,
 720         int64_t &video_position,
 721         File *file,
 722         int &error)
 723 {
 724         Track *playable_track = 0;
 725         Edit *playable_edit = 0;
 726
 727 //printf("Render::direct_frame_copy 1\n");
 728         if(direct_copy_possible(edl,
 729                 video_position,
 730                 playable_track,
 731                 playable_edit,
 732                 file))
 733         {
 734 // Switch to direct copying
 735                 if(!direct_frame_copying)
 736                 {
 737                         if(video_write_position)
 738                         {
 739                                 error |= file->write_video_buffer(video_write_position);
 740                                 video_write_position = 0;
 741                         }
 742                         file->stop_video_thread();
 743                         direct_frame_copying = 1;
 744                 }
 745 //printf("Render::direct_frame_copy 2\n");
 746
 747                 if(!package->use_brender)
 748                         error |= ((VEdit*)playable_edit)->read_frame(compressed_output,
 749                                 video_position,
 750                                 PLAY_FORWARD,
 751                                 video_cache,
 752                                 1,
 753                                 0,
 754                                 0);
 755
 756
 757                 if(!error && video_preroll > 0)
 758                 {
 759                         video_preroll--;
 760                 }
 761                 else
 762                 if(!error)
 763                 {
 764                         if(package->use_brender)
 765                         {
 766 //printf("PackageRenderer::direct_frame_copy 1\n");
 767                                 error = set_video_map(video_position, BRender::SCANNED);
 768 //printf("PackageRenderer::direct_frame_copy 10 %d\n", error);
 769                         }
 770                         else
 771                         {
 772                                 VFrame ***temp_output = new VFrame**[1];
 773                                 temp_output[0] = new VFrame*[1];
 774                                 temp_output[0][0] = compressed_output;
 775                                 error = file->write_frames(temp_output, 1);
 776                                 delete [] temp_output[0];
 777                                 delete [] temp_output;
 778                         }
 779                 }
 780                 return 0;
 781         }
 782         else
 783                 return 1;
 784 }
 785
 786 int PackageRenderer::direct_copy_possible(EDL *edl,
 787                                 int64_t current_position,
 788                                 Track* &playable_track,  // The one track which is playable
 789                                 Edit* &playable_edit, // The edit which is playing
 790                                 File *file)   // Output file
 791 {
 792         int result = 1;
 793         int total_playable_tracks = 0;
 794         Track* current_track;
 795
 796 // Number of playable tracks must equal 1
 797         for(current_track = edl->tracks->first;
 798                 current_track && result;
 799                 current_track = current_track->next)
 800         {
 801                 if(current_track->data_type == TRACK_VIDEO)
 802                 {
 803                         if(playable_tracks->is_playable(current_track,
 804                                 current_position,
 805                                 PLAY_FORWARD,
 806                                 1))
 807                         {
 808                                 playable_track = current_track;
 809                                 total_playable_tracks++;
 810                         }
 811                 }
 812         }
 813
 814 //printf("Render::direct_copy_possible 1 %d\n", result);
 815         if(total_playable_tracks != 1) result = 0;
 816 //printf("Render::direct_copy_possible 2 %d\n", result);
 817
 818 // Edit must have a source file
 819 // TODO: descend into nested EDL's
 820         if(result)
 821         {
 822 //printf("Render::direct_copy_possible 3 %d\n", result);
 823                 playable_edit = playable_track->edits->get_playable_edit(current_position, 1);
 824 //printf("Render::direct_copy_possible 4 %d %p\n", result, playable_edit);
 825                 if(!playable_edit)
 826                         result = 0;
 827         }
 828
 829 // Source file must be able to copy to destination file.
 830 // Source file must be same size as project output.
 831         if(result)
 832         {
 833                 if(!file->can_copy_from(playable_edit->asset,
 834                         current_position + playable_track->nudge,
 835                         edl->session->output_w,
 836                         edl->session->output_h))
 837                         result = 0;
 838         }
 839 //printf("Render::direct_copy_possible 6 %d\n", result);
 840
 841 // Test conditions mutual between vrender.C and this.
 842         if(result &&
 843                 !playable_track->direct_copy_possible(current_position, PLAY_FORWARD, 1))
 844                 result = 0;
 845 //printf("Render::direct_copy_possible 7 %d\n", result);
 846
 847         return result;
 848 }
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858 int PackageRenderer::get_master()
 859 {
 860         return 0;
 861 }
 862
 863 // Get result status from server
 864 int PackageRenderer::get_result()
 865 {
 866         return 0;
 867 }
 868
 869 void PackageRenderer::set_result(int value)
 870 {
 871 }
 872
 873 void PackageRenderer::set_progress(int64_t value)
 874 {
 875 }
 876
 877 int PackageRenderer::set_video_map(int64_t position, int value)
 878 {
 879         return 0;
 880 }
 881
 882 int PackageRenderer::progress_cancelled()
 883 {
 884         return 0;
 885 }
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895