cinelerra-5.1/cinelerra/renderengine.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2009 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 "amodule.h"
  23 #include "arender.h"
  24 #include "asset.h"
  25 #include "audiodevice.h"
  26 #include "bcsignals.h"
  27 #include "condition.h"
  28 #include "edl.h"
  29 #include "edlsession.h"
  30 #include "meterhistory.h"
  31 #include "mutex.h"
  32 #include "mwindow.h"
  33 #include "playbackengine.h"
  34 #include "preferences.h"
  35 #include "preferencesthread.h"
  36 #include "renderengine.h"
  37 #include "mainsession.h"
  38 #include "tracks.h"
  39 #include "transportque.h"
  40 #include "videodevice.h"
  41 #include "vrender.h"
  42 #include "workarounds.h"
  43
  44
  45
  46 RenderEngine::RenderEngine(PlaybackEngine *playback_engine,
  47         Preferences *preferences,
  48         Canvas *output,
  49         int is_nested)
  50  : Thread(1, 0, 0)
  51 {
  52         this->playback_engine = playback_engine;
  53         this->output = output;
  54         this->is_nested = is_nested;
  55         audio = 0;
  56         video = 0;
  57         config = new PlaybackConfig;
  58         arender = 0;
  59         vrender = 0;
  60         do_audio = 0;
  61         do_video = 0;
  62         interrupted = 0;
  63         this->preferences = new Preferences;
  64         this->command = new TransportCommand;
  65         this->preferences->copy_from(preferences);
  66         edl = 0;
  67
  68         audio_cache = 0;
  69         video_cache = 0;
  70         mwindow = !playback_engine ? 0 : playback_engine->mwindow;
  71
  72         input_lock = new Condition(1, "RenderEngine::input_lock");
  73         start_lock = new Condition(1, "RenderEngine::start_lock");
  74         output_lock = new Condition(1, "RenderEngine::output_lock");
  75         render_active = new Condition(1,"RenderEngine::render_active");
  76         interrupt_lock = new Condition(1, "RenderEngine::interrupt_lock");
  77         first_frame_lock = new Condition(1, "RenderEngine::first_frame_lock");
  78 }
  79
  80 RenderEngine::~RenderEngine()
  81 {
  82         close_output();
  83         delete command;
  84         delete preferences;
  85         if(arender) delete arender;
  86         if(vrender) delete vrender;
  87         delete input_lock;
  88         delete start_lock;
  89         delete output_lock;
  90         delete render_active;
  91         delete interrupt_lock;
  92         delete first_frame_lock;
  93         delete config;
  94         if( edl ) edl->Garbage::remove_user();
  95 }
  96
  97 EDL* RenderEngine::get_edl()
  98 {
  99 //      return command->get_edl();
 100         return edl;
 101 }
 102
 103 int RenderEngine::arm_command(TransportCommand *command)
 104 {
 105         const int debug = 0;
 106 // Prevent this renderengine from accepting another command until finished.
 107 // Since the renderengine is often deleted after the input_lock command it must
 108 // be locked here as well as in the calling routine.
 109         if(debug) printf("RenderEngine::arm_command %d\n", __LINE__);
 110
 111
 112         input_lock->lock("RenderEngine::arm_command");
 113
 114         if(!edl)
 115         {
 116                 edl = new EDL;
 117                 edl->create_objects();
 118                 edl->copy_all(command->get_edl());
 119         }
 120         this->command->copy_from(command);
 121
 122 // Fix background rendering asset to use current dimensions and ignore
 123 // headers.
 124         preferences->brender_asset->frame_rate = command->get_edl()->session->frame_rate;
 125         preferences->brender_asset->width = command->get_edl()->session->output_w;
 126         preferences->brender_asset->height = command->get_edl()->session->output_h;
 127         preferences->brender_asset->use_header = 0;
 128         preferences->brender_asset->layers = 1;
 129         preferences->brender_asset->video_data = 1;
 130
 131         done = 0;
 132         interrupted = 0;
 133
 134 // Retool configuration for this node
 135         this->config->copy_from(command->get_edl()->session->playback_config);
 136         VideoOutConfig *vconfig = this->config->vconfig;
 137         AudioOutConfig *aconfig = this->config->aconfig;
 138         if(command->realtime)
 139         {
 140                 if(command->single_frame() && vconfig->driver != PLAYBACK_X11_GL)
 141                 {
 142                         vconfig->driver = PLAYBACK_X11;
 143                 }
 144         }
 145         else
 146         {
 147                 vconfig->driver = PLAYBACK_X11;
 148         }
 149
 150
 151
 152         get_duty();
 153
 154         if(do_audio)
 155         {
 156                 fragment_len = aconfig->fragment_size;
 157 // Larger of audio_module_fragment and fragment length adjusted for speed
 158 // Extra memory must be allocated for rendering slow motion.
 159                 float speed = command->get_speed();
 160                 adjusted_fragment_len = speed >= 1.0 ?
 161                         (int64_t)(aconfig->fragment_size * speed + 0.5) :
 162                         (int64_t)(aconfig->fragment_size / speed + 0.5) ;
 163                 if(adjusted_fragment_len < aconfig->fragment_size)
 164                         adjusted_fragment_len = aconfig->fragment_size;
 165         }
 166
 167 // Set lock so audio doesn't start until video has started.
 168         if(do_video)
 169         {
 170                 while(first_frame_lock->get_value() > 0)
 171                         first_frame_lock->lock("RenderEngine::arm_command");
 172         }
 173         else
 174 // Set lock so audio doesn't wait for video which is never to come.
 175         {
 176                 while(first_frame_lock->get_value() <= 0)
 177                         first_frame_lock->unlock();
 178         }
 179
 180         open_output();
 181         create_render_threads();
 182         arm_render_threads();
 183         if(debug) printf("RenderEngine::arm_command %d\n", __LINE__);
 184
 185         return 0;
 186 }
 187
 188 void RenderEngine::get_duty()
 189 {
 190         do_audio = 0;
 191         do_video = 0;
 192
 193 //printf("RenderEngine::get_duty %d\n", __LINE__);
 194         if( get_edl()->tracks->playable_audio_tracks() &&
 195             get_edl()->session->audio_channels )
 196         {
 197                 do_audio = !command->single_frame() ? 1 : 0;
 198                 if( command->toggle_audio ) do_audio = !do_audio;
 199         }
 200
 201 //printf("RenderEngine::get_duty %d\n", __LINE__);
 202         if(get_edl()->tracks->playable_video_tracks())
 203         {
 204 //printf("RenderEngine::get_duty %d\n", __LINE__);
 205                 do_video = 1;
 206         }
 207 }
 208
 209 void RenderEngine::create_render_threads()
 210 {
 211         if(do_video && !vrender)
 212         {
 213                 vrender = new VRender(this);
 214         }
 215
 216         if(do_audio && !arender)
 217         {
 218                 arender = new ARender(this);
 219         }
 220 }
 221
 222
 223 int RenderEngine::get_output_w()
 224 {
 225         return get_edl()->session->output_w;
 226 }
 227
 228 int RenderEngine::get_output_h()
 229 {
 230         return get_edl()->session->output_h;
 231 }
 232
 233 int RenderEngine::brender_available(int position, int direction)
 234 {
 235         if(playback_engine)
 236         {
 237                 int64_t corrected_position = position;
 238                 if(direction == PLAY_REVERSE)
 239                         corrected_position--;
 240                 return playback_engine->brender_available(corrected_position);
 241         }
 242         else
 243                 return 0;
 244 }
 245
 246
 247 CICache* RenderEngine::get_acache()
 248 {
 249         if(playback_engine)
 250                 return playback_engine->audio_cache;
 251         else
 252                 return audio_cache;
 253 }
 254
 255 CICache* RenderEngine::get_vcache()
 256 {
 257         if(playback_engine)
 258                 return playback_engine->video_cache;
 259         else
 260                 return video_cache;
 261 }
 262
 263 void RenderEngine::set_acache(CICache *cache)
 264 {
 265         this->audio_cache = cache;
 266 }
 267
 268 void RenderEngine::set_vcache(CICache *cache)
 269 {
 270         this->video_cache = cache;
 271 }
 272
 273
 274 double RenderEngine::get_tracking_position()
 275 {
 276         if(playback_engine)
 277                 return playback_engine->get_tracking_position();
 278         else
 279                 return 0;
 280 }
 281
 282 int RenderEngine::open_output()
 283 {
 284         if(command->realtime && !is_nested)
 285         {
 286 // Allocate devices
 287                 if(do_audio)
 288                 {
 289                         audio = new AudioDevice(mwindow);
 290                 }
 291
 292                 if(do_video)
 293                 {
 294                         video = new VideoDevice(mwindow);
 295                 }
 296
 297 // Initialize sharing
 298
 299
 300 // Start playback
 301                 if(do_audio && do_video)
 302                 {
 303                         video->set_adevice(audio);
 304                         audio->set_vdevice(video);
 305                 }
 306
 307
 308
 309 // Retool playback configuration
 310                 if(do_audio)
 311                 {
 312                         if(audio->open_output(config->aconfig,
 313                                 get_edl()->session->sample_rate,
 314                                 adjusted_fragment_len,
 315                                 get_edl()->session->audio_channels,
 316                                 get_edl()->session->real_time_playback))
 317                                 do_audio = 0;
 318                         else
 319                         {
 320                                 audio->set_software_positioning(
 321                                         get_edl()->session->playback_software_position);
 322                                 audio->start_playback();
 323                         }
 324                 }
 325
 326                 if(do_video)
 327                 {
 328                         video->open_output(config->vconfig,
 329                                 get_edl()->session->frame_rate,
 330                                 get_output_w(),
 331                                 get_output_h(),
 332                                 output,
 333                                 command->single_frame());
 334                         video->set_quality(80);
 335                         video->set_cpus(preferences->processors);
 336                 }
 337         }
 338
 339         return 0;
 340 }
 341
 342 void RenderEngine::reset_sync_position()
 343 {
 344         timer.update();
 345 }
 346
 347 int64_t RenderEngine::sync_position()
 348 {
 349 // Use audio device
 350 // No danger of race conditions because the output devices are closed after all
 351 // threads join.
 352         if( do_audio )
 353                 return audio->current_position();
 354         if( do_video ) {
 355                 int64_t result = timer.get_scaled_difference(
 356                         get_edl()->session->sample_rate);
 357                 return result;
 358         }
 359         return 0;
 360 }
 361
 362
 363 int RenderEngine::start_command()
 364 {
 365         if( command->realtime && !is_nested ) {
 366                 interrupt_lock->lock("RenderEngine::start_command");
 367                 start_lock->lock("RenderEngine::start_command 1");
 368                 Thread::start();
 369                 start_lock->lock("RenderEngine::start_command 2");
 370                 start_lock->unlock();
 371         }
 372         return 0;
 373 }
 374
 375 void RenderEngine::arm_render_threads()
 376 {
 377         if( do_audio ) arender->arm_command();
 378         if( do_video ) vrender->arm_command();
 379 }
 380
 381
 382 void RenderEngine::start_render_threads()
 383 {
 384 // Synchronization timer.  Gets reset once again after the first video frame.
 385         timer.update();
 386
 387         if( do_audio ) arender->start_command();
 388         if( do_video ) vrender->start_command();
 389
 390         start_lock->unlock();
 391 }
 392
 393 void RenderEngine::update_framerate(float framerate)
 394 {
 395         playback_engine->mwindow->session->actual_frame_rate = framerate;
 396         playback_engine->mwindow->preferences_thread->update_framerate();
 397 }
 398
 399 void RenderEngine::wait_render_threads()
 400 {
 401         interrupt_lock->unlock();
 402         if( do_audio ) arender->Thread::join();
 403         if( do_video ) vrender->Thread::join();
 404         interrupt_lock->lock("RenderEngine::wait_render_threads");
 405 }
 406
 407 void RenderEngine::interrupt_playback()
 408 {
 409         if( interrupted ) return;
 410         interrupt_lock->lock("RenderEngine::interrupt_playback");
 411         if( !interrupted ) {
 412                 interrupted = 1;
 413                 if( do_audio && arender ) arender->interrupt_playback();
 414                 if( do_video && vrender ) vrender->interrupt_playback();
 415         }
 416         interrupt_lock->unlock();
 417 }
 418
 419 int RenderEngine::close_output()
 420 {
 421 // Nested engines share devices
 422         if( is_nested ) return 0;
 423         if( audio ) {
 424                 audio->close_all();
 425                 delete audio;  audio = 0;
 426         }
 427         if( video ) {
 428                 video->close_all();
 429                 delete video;  video = 0;
 430         }
 431         return 0;
 432 }
 433
 434 void RenderEngine::get_output_levels(double *levels, int64_t position)
 435 {
 436         if( do_audio ) {
 437                 MeterHistory *meter_history = arender->meter_history;
 438                 int64_t tolerance = 4*arender->meter_render_fragment;
 439                 int pos = meter_history->get_nearest(position, tolerance);
 440                 for( int i=0; i<MAXCHANNELS; ++i ) {
 441                         if( !arender->audio_out[i] ) continue;
 442                         levels[i] = meter_history->get_peak(i, pos);
 443                 }
 444         }
 445 }
 446
 447 void RenderEngine::get_module_levels(ArrayList<double> *module_levels, int64_t position)
 448 {
 449         if( do_audio ) {
 450                 int64_t tolerance = 4*arender->meter_render_fragment;
 451                 for( int i=0; i<arender->total_modules; ++i ) {
 452                         AModule *amodule = (AModule *)arender->modules[i];
 453                         MeterHistory *meter_history = amodule->meter_history;
 454                         int pos = meter_history->get_nearest(position, tolerance);
 455                         module_levels->append(meter_history->get_peak(0, pos));
 456                 }
 457         }
 458 }
 459
 460
 461 void RenderEngine::run()
 462 {
 463         render_active->lock("RenderEngine::run");
 464
 465         start_render_threads();
 466         wait_render_threads();
 467
 468         close_output();
 469
 470         if( playback_engine && playback_engine->is_playing_back ) {
 471                 double position = interrupted ?
 472                         playback_engine->get_tracking_position() :
 473                         command->get_direction() == PLAY_FORWARD ?
 474                                 command->end_position :
 475                                 command->start_position;
 476                 if( command->displacement ) {
 477                         position -= 1./command->get_edl()->session->frame_rate;
 478                         if( position < 0 ) position = 0;
 479                 }
 480                 playback_engine->is_playing_back = 0;
 481                 playback_engine->tracking_position = position;
 482                 playback_engine->stop_tracking();
 483         }
 484
 485         render_active->unlock();
 486         interrupt_lock->unlock();
 487         input_lock->unlock();
 488 }
 489
 490 void RenderEngine::wait_done()
 491 {
 492         render_active->lock("RenderEngine::wait_done");
 493         render_active->unlock();
 494 }
 495
 496