cinelerra-5.1/cinelerra/formattools.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2010-2013 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 "asset.h"
  23 #include "bcsignals.h"
  24 #include "clip.h"
  25 #include "guicast.h"
  26 #include "file.h"
  27 #include "filesystem.h"
  28 #include "formattools.h"
  29 #include "language.h"
  30 #include "libdv.h"
  31 #include "libmjpeg.h"
  32 #include "maxchannels.h"
  33 #include "mwindow.h"
  34 #include "preferences.h"
  35 #include "theme.h"
  36 #include "videodevice.inc"
  37 #include <string.h>
  38 #include <unistd.h>
  39 #include <ctype.h>
  40
  41
  42 FormatTools::FormatTools(MWindow *mwindow,
  43                                 BC_WindowBase *window,
  44                                 Asset *asset)
  45 {
  46         this->mwindow = mwindow;
  47         this->window = window;
  48         this->asset = asset;
  49
  50         aparams_button = 0;
  51         vparams_button = 0;
  52         aparams_thread = 0;
  53         vparams_thread = 0;
  54         audio_switch = 0;
  55         video_switch = 0;
  56         path_textbox = 0;
  57         path_button = 0;
  58         path_recent = 0;
  59         format_title = 0;
  60         format_button = 0;
  61         format_text = 0;
  62         audio_title = 0;
  63         video_title = 0;
  64         labeled_files = 0;
  65         w = window->get_w();
  66
  67         recording = 0;
  68         use_brender = 0;
  69         do_audio = 0;
  70         do_video = 0;
  71         prompt_audio = 0;
  72         prompt_audio_channels = 0;
  73         prompt_video = 0;
  74         prompt_video_compression = 0;
  75         file_per_label = 0;
  76         locked_compressor = 0;
  77         video_driver = 0;
  78 }
  79
  80 FormatTools::~FormatTools()
  81 {
  82         delete path_recent;
  83 SET_TRACE
  84         delete path_button;
  85 SET_TRACE
  86         delete path_textbox;
  87 SET_TRACE
  88         delete format_button;
  89 SET_TRACE
  90
  91         if(aparams_button) delete aparams_button;
  92 SET_TRACE
  93         if(vparams_button) delete vparams_button;
  94 SET_TRACE
  95         if(aparams_thread) delete aparams_thread;
  96 SET_TRACE
  97         if(vparams_thread) delete vparams_thread;
  98 SET_TRACE
  99 }
 100
 101 void FormatTools::create_objects(
 102                 int &init_x, int &init_y,
 103                 int do_audio, int do_video,   // Include support for audio, video
 104                 int prompt_audio, int prompt_video, // Include checkbox for audio, video
 105                 int prompt_audio_channels,
 106                 int prompt_video_compression,
 107                 const char *locked_compressor,
 108                 int recording,
 109                 int *file_per_label,
 110                 int brender,
 111                 int horizontal_layout)
 112 {
 113         int x = init_x;
 114         int y = init_y;
 115         int ylev = init_y;
 116         int margin = mwindow->theme->widget_border;
 117
 118         this->locked_compressor = locked_compressor;
 119         this->recording = recording;
 120         this->use_brender = brender;
 121         this->do_audio = do_audio;
 122         this->do_video = do_video;
 123         this->prompt_audio = prompt_audio;
 124         this->prompt_audio_channels = prompt_audio_channels;
 125         this->prompt_video = prompt_video;
 126         this->prompt_video_compression = prompt_video_compression;
 127         this->file_per_label = file_per_label;
 128
 129 //printf("FormatTools::create_objects 1\n");
 130
 131         if(!recording)
 132         {
 133                 int px = x;
 134                 window->add_subwindow(path_textbox = new FormatPathText(px, y, this));
 135                 px += path_textbox->get_w() + 5;
 136                 path_recent = new BC_RecentList("PATH", mwindow->defaults,
 137                                         path_textbox, 10, px, y, 300, 100);
 138                 window->add_subwindow(path_recent);
 139                 path_recent->load_items(File::formattostr(asset->format));
 140                 px += path_recent->get_w();
 141                 window->add_subwindow(path_button = new BrowseButton(
 142                         mwindow->theme, window, path_textbox, px, y, asset->path,
 143                         _("Output to file"), _("Select a file to write to:"), 0));
 144
 145 // Set w for user.
 146                 w = MAX(w, 305);
 147                 y += path_textbox->get_h() + 10;
 148         }
 149         else
 150         {
 151 //              w = x + 305;
 152                 w = 305;
 153         }
 154
 155         x = init_x;
 156         window->add_subwindow(format_title = new BC_Title(x, y, _("File Format:")));
 157         x += format_title->get_w() + margin;
 158         window->add_subwindow(format_text = new BC_TextBox(x, y, 160, 1,
 159                 File::formattostr(asset->format)));
 160         x += format_text->get_w() + margin;
 161 //printf("FormatTools::create_objects %d %p\n", __LINE__, window);
 162         window->add_subwindow(format_button = new FormatFormat(x, y, this));
 163         format_button->create_objects();
 164         x += format_button->get_w() + 5;
 165         window->add_subwindow(ffmpeg_type = new FFMpegType(x, y, 70, 1, asset->fformat));
 166         FFMPEG::set_asset_format(asset, mwindow->edl, asset->fformat);
 167         x += ffmpeg_type->get_w();
 168         window->add_subwindow(format_ffmpeg = new FormatFFMPEG(x, y, this));
 169         format_ffmpeg->create_objects();
 170         x = init_x;
 171         y += format_button->get_h() + 10;
 172         if( do_audio ) {
 173                 window->add_subwindow(audio_title = new BC_Title(x, y, _("Audio:"), LARGEFONT,
 174                         BC_WindowBase::get_resources()->audiovideo_color));
 175                 x += audio_title->get_w() + margin;
 176                 window->add_subwindow(aparams_button = new FormatAParams(mwindow, this, x, y));
 177                 x += aparams_button->get_w() + margin;
 178                 if(prompt_audio) {
 179                         window->add_subwindow(audio_switch = new FormatAudio(x, y, this, asset->audio_data));
 180                 }
 181                 x = init_x;
 182                 ylev = y;
 183                 y += aparams_button->get_h() + 10;
 184
 185 //printf("FormatTools::create_objects 6\n");
 186                 aparams_thread = new FormatAThread(this);
 187         }
 188
 189 //printf("FormatTools::create_objects 7\n");
 190         if( do_video ) {
 191                 if( horizontal_layout && do_audio ) {
 192                         x += 370;
 193                         y = ylev;
 194                 }
 195
 196 //printf("FormatTools::create_objects 8\n");
 197                 window->add_subwindow(video_title = new BC_Title(x, y, _("Video:"), LARGEFONT,
 198                         BC_WindowBase::get_resources()->audiovideo_color));
 199                 x += video_title->get_w() + margin;
 200                 if(prompt_video_compression) {
 201                         window->add_subwindow(vparams_button = new FormatVParams(mwindow, this, x, y));
 202                         x += vparams_button->get_w() + margin;
 203                 }
 204
 205 //printf("FormatTools::create_objects 9\n");
 206                 if(prompt_video) {
 207                         window->add_subwindow(video_switch = new FormatVideo(x, y, this, asset->video_data));
 208                         y += video_switch->get_h();
 209                 }
 210                 else {
 211                         y += vparams_button->get_h();
 212                 }
 213
 214 //printf("FormatTools::create_objects 10\n");
 215                 y += 10;
 216                 vparams_thread = new FormatVThread(this);
 217         }
 218
 219 //printf("FormatTools::create_objects 11\n");
 220
 221         x = init_x;
 222         if( file_per_label ) {
 223                 labeled_files = new FormatFilePerLabel(this, x, y, file_per_label);
 224                 window->add_subwindow(labeled_files);
 225                 y += labeled_files->get_h() + 10;
 226         }
 227
 228 //printf("FormatTools::create_objects 12\n");
 229
 230         init_y = y;
 231         update_format();
 232 }
 233
 234 void FormatTools::update_driver(int driver)
 235 {
 236         this->video_driver = driver;
 237
 238         locked_compressor = 0;
 239         switch(driver)
 240         {
 241                 case CAPTURE_DVB:
 242                 case VIDEO4LINUX2MPEG:
 243 // Just give the user information about how the stream is going to be
 244 // stored but don't change the asset.
 245 // Want to be able to revert to user settings.
 246                         if(asset->format == FILE_MPEG) break;
 247                         asset->format = FILE_MPEG;
 248                         format_text->update(File::formattostr(asset->format));
 249                         asset->audio_data = 1;
 250                         asset->video_data = 1;
 251                         audio_switch->update(1);
 252                         video_switch->update(1);
 253                         break;
 254
 255                 case CAPTURE_IEC61883:
 256                 case CAPTURE_FIREWIRE:
 257                 case VIDEO4LINUX2JPEG:
 258                 case CAPTURE_JPEG_WEBCAM:
 259                         asset->format = FILE_FFMPEG;
 260                         format_text->update(File::formattostr(asset->format));
 261
 262                         switch(driver) {
 263                         case CAPTURE_IEC61883:
 264                         case CAPTURE_FIREWIRE:
 265                                 locked_compressor = (char*)CODEC_TAG_DVSD;
 266                                 break;
 267
 268                         case VIDEO4LINUX2JPEG:
 269                                 locked_compressor = (char*)CODEC_TAG_MJPEG;
 270                                 break;
 271
 272                         case CAPTURE_JPEG_WEBCAM:
 273                                 locked_compressor = (char*)CODEC_TAG_JPEG;
 274                                 break;
 275                         }
 276                         if( locked_compressor )
 277                                 strcpy(asset->vcodec, locked_compressor);
 278
 279                         audio_switch->update(asset->audio_data);
 280                         video_switch->update(asset->video_data);
 281                         break;
 282
 283                 default:
 284                         format_text->update(File::formattostr(asset->format));
 285                         audio_switch->update(asset->audio_data);
 286                         video_switch->update(asset->video_data);
 287                         break;
 288         }
 289         close_format_windows();
 290         update_format();
 291 }
 292
 293 void FormatTools::update_format()
 294 {
 295         if( do_audio && prompt_audio && audio_switch ) {
 296                 audio_switch->update(asset->audio_data);
 297                 if( File::renders_audio(asset) )
 298                         audio_switch->enable();
 299                 else
 300                         audio_switch->disable();
 301         }
 302         if( do_video && prompt_video && video_switch ) {
 303                 video_switch->update(asset->video_data);
 304                 if( File::renders_video(asset) )
 305                         video_switch->enable();
 306                 else
 307                         video_switch->disable();
 308         }
 309         if( asset->format == FILE_FFMPEG ) {
 310                 ffmpeg_type->show();
 311                 format_ffmpeg->show();
 312         }
 313         else {
 314                 ffmpeg_type->hide();
 315                 format_ffmpeg->hide();
 316         }
 317 }
 318
 319 int FormatTools::handle_event()
 320 {
 321         return 0;
 322 }
 323
 324 Asset* FormatTools::get_asset()
 325 {
 326         return asset;
 327 }
 328
 329 void FormatTools::update_extension()
 330 {
 331         const char *extension = File::get_tag(asset->format);
 332 // split multiple extensions
 333         ArrayList<const char*> extensions;
 334         int len = !extension ? -1 : strlen(extension);
 335         const char *extension_ptr = extension;
 336         for(int i = 0; i <= len; i++)
 337         {
 338                 if(extension[i] == '/' || extension[i] == 0)
 339                 {
 340                         extensions.append(extension_ptr);
 341                         extension_ptr = extension + i + 1;
 342                 }
 343         }
 344
 345         if(extensions.size())
 346         {
 347                 char *ptr = strrchr(asset->path, '.');
 348                 if(!ptr)
 349                 {
 350                         ptr = asset->path + strlen(asset->path);
 351                         *ptr = '.';
 352                 }
 353                 ptr++;
 354
 355 // test for equivalent extension
 356                 int need_extension = 1;
 357                 //int extension_len = 0;
 358                 for(int i = 0; i < extensions.size() && need_extension; i++)
 359                 {
 360                         char *ptr1 = ptr;
 361                         extension_ptr = extensions.get(i);
 362 // test an extension
 363                         need_extension = 0;
 364                         while(*ptr1 != 0 && *extension_ptr != 0 && *extension_ptr != '/')
 365                         {
 366                                 if(tolower(*ptr1) != tolower(*extension_ptr))
 367                                 {
 368                                         need_extension = 1;
 369                                         break;
 370                                 }
 371                                 ptr1++;
 372                                 extension_ptr++;
 373                         }
 374
 375                         if(*ptr1 == 0 &&
 376                                 *extension_ptr != 0 &&
 377                                 *extension_ptr != '/')
 378                                 need_extension = 1;
 379                 }
 380
 381 //printf("FormatTools::update_extension %d %d\n", __LINE__, need_extension);
 382 // copy extension
 383                 if(need_extension)
 384                 {
 385                         char *ptr1 = ptr;
 386                         extension_ptr = asset->format != FILE_FFMPEG ?
 387                                 extensions.get(0) : asset->fformat;
 388                         while(*extension_ptr != 0 && *extension_ptr != '/')
 389                                 *ptr1++ = *extension_ptr++;
 390                         *ptr1 = 0;
 391                 }
 392
 393                 int character1 = ptr - asset->path;
 394                 int character2 = strlen(asset->path);
 395 //              *(asset->path + character2) = 0;
 396                 if(path_textbox)
 397                 {
 398                         path_textbox->update(asset->path);
 399                         path_textbox->set_selection(character1, character2, character2);
 400                 }
 401         }
 402 }
 403
 404 void FormatTools::update(Asset *asset, int *file_per_label)
 405 {
 406         this->asset = asset;
 407         this->file_per_label = file_per_label;
 408         if( file_per_label ) labeled_files->update(file_per_label);
 409         if( path_textbox ) path_textbox->update(asset->path);
 410         format_text->update(File::formattostr(asset->format));
 411         update_format();
 412         close_format_windows();
 413 }
 414
 415 void FormatTools::close_format_windows()
 416 {
 417 // This is done in ~file
 418         if( aparams_thread ) {
 419                 if( aparams_thread->running() )
 420                         aparams_thread->file->close_window();
 421                 aparams_thread->join();
 422         }
 423         if( vparams_thread ) {
 424                 if( vparams_thread->running() )
 425                         vparams_thread->file->close_window();
 426                 vparams_thread->join();
 427         }
 428 }
 429
 430 int FormatTools::get_w()
 431 {
 432         return asset->format != FILE_FFMPEG ? w :
 433                 format_ffmpeg->get_x() + format_ffmpeg->get_w();
 434 }
 435
 436 void FormatTools::set_w(int w)
 437 {
 438         this->w = w;
 439 }
 440
 441 void FormatTools::reposition_window(int &init_x, int &init_y)
 442 {
 443         int x = init_x;
 444         int y = init_y;
 445
 446         if(path_textbox)
 447         {
 448                 int px = x;
 449                 path_textbox->reposition_window(px, y);
 450                 px += path_textbox->get_w() + 5;
 451                 path_recent->reposition_window(px, y);
 452                 px += path_recent->get_w() + 8;
 453                 path_button->reposition_window(px, y);
 454                 y += path_textbox->get_h() + 10;
 455         }
 456
 457         format_title->reposition_window(x, y);
 458         x += 90;
 459         format_text->reposition_window(x, y);
 460         x += format_text->get_w();
 461         format_button->reposition_window(x, y);
 462
 463         x = init_x;
 464         y += format_button->get_h() + 10;
 465
 466         if(do_audio)
 467         {
 468                 audio_title->reposition_window(x, y);
 469                 x += 80;
 470                 aparams_button->reposition_window(x, y);
 471                 x += aparams_button->get_w() + 10;
 472                 if(prompt_audio) audio_switch->reposition_window(x, y);
 473
 474                 x = init_x;
 475                 y += aparams_button->get_h() + 10;
 476         }
 477
 478
 479         if(do_video)
 480         {
 481                 video_title->reposition_window(x, y);
 482                 x += 80;
 483                 if(prompt_video_compression)
 484                 {
 485                         vparams_button->reposition_window(x, y);
 486                         x += vparams_button->get_w() + 10;
 487                 }
 488
 489                 if(prompt_video)
 490                 {
 491                         video_switch->reposition_window(x, y);
 492                         y += video_switch->get_h();
 493                 }
 494                 else
 495                 {
 496                         y += vparams_button->get_h();
 497                 }
 498
 499                 y += 10;
 500                 x = init_x;
 501         }
 502
 503         if( file_per_label ) {
 504                 labeled_files->reposition_window(x, y);
 505                 y += labeled_files->get_h() + 10;
 506         }
 507
 508         init_y = y;
 509 }
 510
 511
 512 int FormatTools::set_audio_options()
 513 {
 514 //      if(video_driver == CAPTURE_DVB)
 515 //      {
 516 //              return 0;
 517 //      }
 518
 519         if(!aparams_thread->running())
 520         {
 521                 aparams_thread->start();
 522         }
 523         else
 524         {
 525                 aparams_thread->file->raise_window();
 526         }
 527         return 0;
 528 }
 529
 530 int FormatTools::set_video_options()
 531 {
 532 //      if(video_driver == CAPTURE_DVB)
 533 //      {
 534 //              return 0;
 535 //      }
 536
 537         if(!vparams_thread->running())
 538         {
 539                 vparams_thread->start();
 540         }
 541         else
 542         {
 543                 vparams_thread->file->raise_window();
 544         }
 545
 546         return 0;
 547 }
 548
 549
 550
 551
 552
 553 FormatAParams::FormatAParams(MWindow *mwindow, FormatTools *format, int x, int y)
 554  : BC_Button(x, y, mwindow->theme->get_image_set("wrench"))
 555 {
 556         this->format = format;
 557         set_tooltip(_("Configure audio compression"));
 558 }
 559
 560 FormatAParams::~FormatAParams()
 561 {
 562 }
 563
 564 int FormatAParams::handle_event()
 565 {
 566         format->set_audio_options();
 567         format->handle_event();
 568         return 1;
 569 }
 570
 571
 572
 573
 574
 575 FormatVParams::FormatVParams(MWindow *mwindow, FormatTools *format, int x, int y)
 576  : BC_Button(x, y, mwindow->theme->get_image_set("wrench"))
 577 {
 578         this->format = format;
 579         set_tooltip(_("Configure video compression"));
 580 }
 581
 582 FormatVParams::~FormatVParams()
 583 {
 584 }
 585
 586 int FormatVParams::handle_event()
 587 {
 588         format->set_video_options();
 589         format->handle_event();
 590         return 1;
 591 }
 592
 593
 594
 595
 596
 597 FormatAThread::FormatAThread(FormatTools *format)
 598  : Thread(1, 0, 0)
 599 {
 600         this->format = format;
 601         file = new File;
 602         joined = 1;
 603 }
 604
 605 FormatAThread::~FormatAThread()
 606 {
 607         delete file;  file = 0;
 608         join();
 609 }
 610
 611 void FormatAThread::start()
 612 {
 613         join();
 614         joined = 0;
 615         Thread::start();
 616 }
 617
 618
 619 void FormatAThread::run()
 620 {
 621         file->get_options(format, 1, 0);
 622 }
 623
 624
 625
 626
 627 FormatVThread::FormatVThread(FormatTools *format)
 628  : Thread(1, 0, 0)
 629 {
 630         this->format = format;
 631         file = new File;
 632         joined = 1;
 633 }
 634
 635 FormatVThread::~FormatVThread()
 636 {
 637         delete file;  file = 0;
 638         join();
 639 }
 640
 641 void FormatVThread::start()
 642 {
 643         join();
 644         joined = 0;
 645         Thread::start();
 646 }
 647
 648 void FormatVThread::run()
 649 {
 650         file->get_options(format, 0, 1);
 651 }
 652
 653
 654
 655
 656
 657 FormatPathText::FormatPathText(int x, int y, FormatTools *format)
 658  : BC_TextBox(x, y, format->w - x -
 659                 2*format->mwindow->theme->get_image_set("wrench")[0]->get_w() - 20, 1,
 660         format->asset->path)
 661 {
 662         this->format = format;
 663 }
 664
 665 FormatPathText::~FormatPathText()
 666 {
 667 }
 668 int FormatPathText::handle_event()
 669 {
 670         calculate_suggestions();
 671         strcpy(format->asset->path, get_text());
 672         format->handle_event();
 673         return 1;
 674 }
 675
 676
 677
 678
 679 FormatAudio::FormatAudio(int x, int y, FormatTools *format, int default_)
 680  : BC_CheckBox(x,
 681         y,
 682         default_,
 683         (char*)(format->recording ? _("Record audio tracks") : _("Render audio tracks")))
 684 {
 685         this->format = format;
 686 }
 687
 688 FormatAudio::~FormatAudio() {}
 689 int FormatAudio::handle_event()
 690 {
 691         format->asset->audio_data = get_value();
 692         format->handle_event();
 693         return 1;
 694 }
 695
 696
 697 FormatVideo::FormatVideo(int x, int y, FormatTools *format, int default_)
 698  : BC_CheckBox(x,
 699         y,
 700         default_,
 701         (char*)(format->recording ? _("Record video tracks") : _("Render video tracks")))
 702 {
 703 this->format = format;
 704 }
 705
 706 FormatVideo::~FormatVideo() {}
 707 int FormatVideo::handle_event()
 708 {
 709         format->asset->video_data = get_value();
 710         format->handle_event();
 711         return 1;
 712 }
 713
 714
 715
 716
 717 FormatFormat::FormatFormat(int x, int y, FormatTools *format)
 718  : FormatPopup(x, y, format->do_audio, format->do_video, format->use_brender)
 719 {
 720         this->format = format;
 721 }
 722
 723 FormatFormat::~FormatFormat()
 724 {
 725 }
 726
 727 int FormatFormat::handle_event()
 728 {
 729         BC_ListBoxItem *selection = get_selection(0, 0);
 730         if( selection ) {
 731                 int new_format = File::strtoformat(get_selection(0, 0)->get_text());
 732 //              if(new_format != format->asset->format)
 733                 {
 734                         Asset *asset = format->asset;
 735                         asset->format = new_format;
 736                         asset->audio_data = File::renders_audio(asset);
 737                         asset->video_data = File::renders_video(asset);
 738                         asset->ff_audio_options[0] = 0;
 739                         asset->ff_video_options[0] = 0;
 740                         format->format_text->update(selection->get_text());
 741                         if( !format->use_brender )
 742                                 format->update_extension();
 743                         format->close_format_windows();
 744                         if (format->path_recent) format->path_recent->
 745                                 load_items(File::formattostr(format->asset->format));
 746                         format->update_format();
 747                 }
 748                 format->handle_event();
 749         }
 750         return 1;
 751 }
 752
 753
 754 FormatFFMPEG::FormatFFMPEG(int x, int y, FormatTools *format)
 755  : FFMPEGPopup(x, y)
 756 {
 757         this->format = format;
 758 }
 759
 760 FormatFFMPEG::~FormatFFMPEG()
 761 {
 762 }
 763
 764 int FormatFFMPEG::handle_event()
 765 {
 766         BC_ListBoxItem *selection = get_selection(0, 0);
 767         if( selection ) {
 768                 char *text = get_selection(0, 0)->get_text();
 769                 format->ffmpeg_type->update(text);
 770                 format->asset->ff_audio_options[0] = 0;
 771                 format->asset->ff_video_options[0] = 0;
 772                 FFMPEG::set_asset_format(format->asset, format->mwindow->edl, text);
 773                 format->update_extension();
 774                 format->close_format_windows();
 775                 format->update_format();
 776                 format->handle_event();
 777         }
 778         return 1;
 779 }
 780
 781
 782 FormatFilePerLabel::FormatFilePerLabel(FormatTools *format,
 783         int x, int y, int *output)
 784  : BC_CheckBox(x, y, *output, _("Create new file at each label"))
 785 {
 786         this->format = format;
 787         this->output = output;
 788 }
 789
 790 FormatFilePerLabel::~FormatFilePerLabel()
 791 {
 792 }
 793
 794 int FormatFilePerLabel::handle_event()
 795 {
 796         *output = get_value();
 797         format->handle_event();
 798         return 1;
 799 }
 800
 801 void FormatFilePerLabel::update(int *output)
 802 {
 803         this->output = output;
 804         set_value(*output ? 1 : 0);
 805 }
 806
 807