cinelerra-5.1/cinelerra/amodule.C

   1
   2 /*
   3  * CINELERRA
   4  * Copyright (C) 2009-2013 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 "aattachmentpoint.h"
  23 #include "aedit.h"
  24 #include "amodule.h"
  25 #include "aplugin.h"
  26 #include "arender.h"
  27 #include "asset.h"
  28 #include "atrack.h"
  29 #include "automation.h"
  30 #include "bcsignals.h"
  31 #include "cache.h"
  32 #include "clip.h"
  33 #include "edits.h"
  34 #include "edl.h"
  35 #include "edlsession.h"
  36 #include "file.h"
  37 #include "filexml.h"
  38 #include "floatautos.h"
  39 #include "language.h"
  40 #include "module.h"
  41 #include "patch.h"
  42 #include "plugin.h"
  43 #include "pluginarray.h"
  44 #include "preferences.h"
  45 #include "renderengine.h"
  46 #include "mainsession.h"
  47 #include "samples.h"
  48 #include "sharedlocation.h"
  49 #include "theme.h"
  50 #include "transition.h"
  51 #include "transportque.h"
  52 #include <string.h>
  53
  54
  55
  56
  57
  58
  59
  60
  61 AModuleResample::AModuleResample(AModule *module)
  62  : Resample()
  63 {
  64         this->module = module;
  65         bzero(nested_output, sizeof(Samples*) * MAX_CHANNELS);
  66         nested_allocation = 0;
  67 }
  68
  69 AModuleResample::~AModuleResample()
  70 {
  71         for(int i = 0; i < MAX_CHANNELS; i++)
  72                 delete nested_output[i];
  73 }
  74
  75 int AModuleResample::read_samples(Samples *buffer, int64_t start, int64_t len)
  76 {
  77         int result = 0;
  78
  79
  80         if(module->asset)
  81         {
  82 // Files only read going forward.
  83                 if(get_direction() == PLAY_REVERSE)
  84                 {
  85                         start -= len;
  86                 }
  87
  88 //printf("AModuleResample::read_samples start=%jd len=%jd\n", start, len);
  89                 module->file->set_audio_position(start);
  90                 module->file->set_channel(module->channel);
  91                 result = module->file->read_samples(buffer, len);
  92
  93 // Reverse buffer so resampling filter renders forward.
  94                 if(get_direction() == PLAY_REVERSE)
  95                         Resample::reverse_buffer(buffer->get_data(), len);
  96         }
  97         else
  98         if(module->nested_edl)
  99         {
 100
 101
 102 // Nested EDL generates reversed buffer.
 103                 for(int i = 0; i < module->nested_edl->session->audio_channels; i++)
 104                 {
 105                         if(nested_allocation < len)
 106                         {
 107                                 delete nested_output[i];
 108                                 nested_output[i] = 0;
 109                         }
 110
 111                         if(!nested_output[i])
 112                         {
 113                                 nested_output[i] = new Samples(len);
 114                         }
 115                 }
 116
 117
 118                 result = module->nested_renderengine->arender->process_buffer(
 119                         nested_output,
 120                         len,
 121                         start);
 122 // printf("AModuleResample::read_samples buffer=%p module=%p len=%d\n",
 123 // buffer,
 124 // module,
 125 // len);
 126                 memcpy(buffer->get_data(),
 127                         nested_output[module->channel]->get_data(),
 128                         len * sizeof(double));
 129
 130         }
 131         return result;
 132 }
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144 AModule::AModule(RenderEngine *renderengine,
 145         CommonRender *commonrender,
 146         PluginArray *plugin_array,
 147         Track *track)
 148  : Module(renderengine, commonrender, plugin_array, track)
 149 {
 150         data_type = TRACK_AUDIO;
 151         transition_temp = 0;
 152         speed_temp = 0;
 153         level_history = 0;
 154         current_level = 0;
 155         bzero(nested_output, sizeof(Samples*) * MAX_CHANNELS);
 156         bzero(prev_head, SPEED_OVERLAP * sizeof(double));
 157         bzero(prev_tail, SPEED_OVERLAP * sizeof(double));
 158         nested_allocation = 0;
 159         resample = 0;
 160         asset = 0;
 161         file = 0;
 162 }
 163
 164
 165
 166
 167 AModule::~AModule()
 168 {
 169         if(transition_temp) delete transition_temp;
 170         if(speed_temp) delete speed_temp;
 171         if(level_history)
 172         {
 173                 delete [] level_history;
 174                 delete [] level_samples;
 175         }
 176
 177         for(int i = 0; i < MAX_CHANNELS; i++)
 178         {
 179                 if(nested_output[i])
 180                 {
 181                         delete nested_output[i];
 182                 }
 183         }
 184
 185         delete resample;
 186 }
 187
 188 AttachmentPoint* AModule::new_attachment(Plugin *plugin)
 189 {
 190         return new AAttachmentPoint(renderengine, plugin);
 191 }
 192
 193
 194 void AModule::create_objects()
 195 {
 196         Module::create_objects();
 197 // Not needed in pluginarray
 198         if(commonrender)
 199         {
 200                 level_history = new double[((ARender*)commonrender)->total_peaks];
 201                 level_samples = new int64_t[((ARender*)commonrender)->total_peaks];
 202                 current_level = 0;
 203
 204                 for(int i = 0; i < ((ARender*)commonrender)->total_peaks; i++)
 205                 {
 206                         level_history[i] = 0;
 207                         level_samples[i] = -1;
 208                 }
 209         }
 210 }
 211
 212 int AModule::get_buffer_size()
 213 {
 214         if(renderengine)
 215                 return renderengine->fragment_len;
 216         else
 217                 return plugin_array->get_bufsize();
 218 }
 219
 220
 221 CICache* AModule::get_cache()
 222 {
 223         if(renderengine)
 224                 return renderengine->get_acache();
 225         else
 226                 return cache;
 227 }
 228
 229
 230 int AModule::import_samples(AEdit *edit,
 231         int64_t start_project,
 232         int64_t edit_startproject,
 233         int64_t edit_startsource,
 234         int direction,
 235         int sample_rate,
 236         Samples *buffer,
 237         int64_t fragment_len)
 238 {
 239         int result = 0;
 240 // start in EDL samplerate
 241         int64_t start_source = start_project -
 242                 edit_startproject +
 243                 edit_startsource;
 244 // fragment size adjusted for speed curve
 245         int64_t speed_fragment_len = fragment_len;
 246 // boundaries of input fragment required for speed curve
 247         double max_position = 0;
 248         double min_position = 0;
 249
 250         double speed_position = edit_startsource;
 251 // position in source where speed curve starts reading
 252         double speed_position1 = speed_position;
 253 // position in source where speed curve finishes
 254         double speed_position2 = speed_position;
 255
 256 // Need speed curve processing
 257         int have_speed = 0;
 258 // Temporary buffer for rendering speed curve
 259         Samples *speed_buffer = buffer;
 260         const int debug = 0;
 261
 262 if(debug) printf("AModule::import_samples %d edit=%p nested_edl=%p\n",
 263 __LINE__,
 264 edit,
 265 nested_edl);
 266         if(nested_edl && edit->channel >= nested_edl->session->audio_channels)
 267                 return 1;
 268 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 269
 270         this->channel = edit->channel;
 271 if(debug) printf("AModule::import_samples %d speed_fragment_len=%jd\n",
 272 __LINE__,
 273 speed_fragment_len);
 274
 275
 276
 277
 278 // apply speed curve to source position so the timeline agrees with the playback
 279         if(track->has_speed())
 280         {
 281 // get speed adjusted position from start of edit.
 282                 FloatAuto *previous = 0;
 283                 FloatAuto *next = 0;
 284                 FloatAutos *speed_autos = (FloatAutos*)track->automation->autos[AUTOMATION_SPEED];
 285                 speed_position += speed_autos->automation_integral(edit_startproject,
 286                                 start_project-edit_startproject, PLAY_FORWARD);
 287                 speed_position1 = speed_position;
 288
 289
 290 // calculate boundaries of input fragment required for speed curve
 291                 max_position = speed_position;
 292                 min_position = speed_position;
 293                 for(int64_t i = start_project; i < start_project + fragment_len; i++)
 294                 {
 295                         double speed = speed_autos->get_value(i,
 296                                 PLAY_FORWARD,
 297                                 previous,
 298                                 next);
 299                         speed_position += speed;
 300                         if(speed_position > max_position) max_position = speed_position;
 301                         if(speed_position < min_position) min_position = speed_position;
 302                 }
 303
 304                 speed_position2 = speed_position;
 305                 if(speed_position2 < speed_position1)
 306                 {
 307                         max_position += 1.0;
 308 //                      min_position -= 1.0;
 309                         speed_fragment_len = (int64_t)(max_position - min_position);
 310                 }
 311                 else
 312                 {
 313                         max_position += 1.0;
 314                         speed_fragment_len = (int64_t)(max_position - min_position);
 315                 }
 316
 317 //printf("AModule::import_samples %d %f %f %f %f\n",
 318 // __LINE__, min_position, max_position, speed_position1, speed_position2);
 319
 320 // new start of source to read from file
 321                 start_source = (int64_t)min_position;
 322                 have_speed = 1;
 323
 324
 325
 326 // swap in the temp buffer
 327                 if(speed_temp && speed_temp->get_allocated() < speed_fragment_len)
 328                 {
 329                         delete speed_temp;
 330                         speed_temp = 0;
 331                 }
 332
 333                 if(!speed_temp)
 334                 {
 335                         speed_temp = new Samples(speed_fragment_len);
 336                 }
 337
 338                 speed_buffer = speed_temp;
 339         }
 340
 341
 342
 343         if(speed_fragment_len == 0)
 344                 return 1;
 345
 346
 347
 348 // Source is a nested EDL
 349         if(edit->nested_edl)
 350         {
 351                 int command;
 352                 asset = 0;
 353
 354                 if(direction == PLAY_REVERSE)
 355                         command = NORMAL_REWIND;
 356                 else
 357                         command = NORMAL_FWD;
 358
 359 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 360                 if(!nested_edl || nested_edl->id != edit->nested_edl->id)
 361                 {
 362                         nested_edl = edit->nested_edl;
 363                         if(nested_renderengine)
 364                         {
 365                                 delete nested_renderengine;
 366                                 nested_renderengine = 0;
 367                         }
 368
 369                         if(!nested_command)
 370                         {
 371                                 nested_command = new TransportCommand;
 372                         }
 373
 374
 375                         if(!nested_renderengine)
 376                         {
 377                                 nested_command->command = command;
 378                                 nested_command->get_edl()->copy_all(nested_edl);
 379                                 nested_command->change_type = CHANGE_ALL;
 380                                 nested_command->realtime = renderengine->command->realtime;
 381                                 nested_renderengine = new RenderEngine(0, get_preferences(), 0, 1);
 382                                 nested_renderengine->set_acache(get_cache());
 383 // Must use a private cache for the audio
 384 //                              if(!cache)
 385 //                              {
 386 //                                      cache = new CICache(get_preferences());
 387 //                                      private_cache = 1;
 388 //                              }
 389 //                              nested_renderengine->set_acache(cache);
 390                                 nested_renderengine->arm_command(nested_command);
 391                         }
 392                 }
 393 if(debug) printf("AModule::import_samples %d speed_fragment_len=%d\n", __LINE__, (int)speed_fragment_len);
 394
 395 // Allocate output buffers for all channels
 396                 for(int i = 0; i < nested_edl->session->audio_channels; i++)
 397                 {
 398                         if(nested_allocation < speed_fragment_len)
 399                         {
 400                                 delete nested_output[i];
 401                                 nested_output[i] = 0;
 402                         }
 403
 404                         if(!nested_output[i])
 405                         {
 406                                 nested_output[i] = new Samples(speed_fragment_len);
 407                         }
 408                 }
 409 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 410
 411                 if(nested_allocation < speed_fragment_len)
 412                         nested_allocation = speed_fragment_len;
 413
 414 // Update direction command
 415                 nested_renderengine->command->command = command;
 416
 417 // Render the segment
 418                 if(!nested_renderengine->arender)
 419                 {
 420                         bzero(speed_buffer->get_data(), speed_fragment_len * sizeof(double));
 421                 }
 422                 else
 423                 if(sample_rate != nested_edl->session->sample_rate)
 424                 {
 425 // Read through sample rate converter.
 426                         if(!resample)
 427                         {
 428                                 resample = new AModuleResample(this);
 429                         }
 430
 431 if(debug) printf("AModule::import_samples %d %d %d\n",
 432 __LINE__,
 433 (int)sample_rate,
 434 (int)nested_edl->session->sample_rate);
 435                         result = resample->resample(speed_buffer,
 436                                 speed_fragment_len,
 437                                 nested_edl->session->sample_rate,
 438                                 sample_rate,
 439                                 start_source,
 440                                 direction);
 441 // Resample reverses to keep it running forward.
 442 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 443                 }
 444                 else
 445                 {
 446 // Render without resampling
 447 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 448                         result = nested_renderengine->arender->process_buffer(
 449                                 nested_output,
 450                                 speed_fragment_len,
 451                                 start_source);
 452 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 453                         memcpy(speed_buffer->get_data(),
 454                                 nested_output[edit->channel]->get_data(),
 455                                 speed_fragment_len * sizeof(double));
 456 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 457
 458 // Reverse fragment so ::render can apply transitions going forward.
 459                         if(direction == PLAY_REVERSE)
 460                         {
 461                                 Resample::reverse_buffer(speed_buffer->get_data(), speed_fragment_len);
 462                         }
 463                 }
 464
 465 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 466         }
 467         else
 468 // Source is an asset
 469         if(edit->asset)
 470         {
 471                 nested_edl = 0;
 472 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 473                 asset = edit->asset;
 474
 475 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 476                 get_cache()->age();
 477
 478 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 479                 if(nested_renderengine)
 480                 {
 481                         delete nested_renderengine;
 482                         nested_renderengine = 0;
 483                 }
 484
 485 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 486
 487                 if(!(file = get_cache()->check_out(
 488                         asset,
 489                         get_edl())))
 490                 {
 491 // couldn't open source file / skip the edit
 492                         printf(_("AModule::import_samples Couldn't open %s.\n"), asset->path);
 493                         result = 1;
 494                 }
 495                 else
 496                 {
 497                         result = 0;
 498
 499
 500                         if(sample_rate != asset->sample_rate)
 501                         {
 502 // Read through sample rate converter.
 503                                 if(!resample)
 504                                 {
 505                                         resample = new AModuleResample(this);
 506                                 }
 507
 508 if(debug) printf("AModule::import_samples %d %d %d\n",
 509 __LINE__,
 510 sample_rate,
 511 asset->sample_rate);
 512                                 result = resample->resample(speed_buffer,
 513                                         speed_fragment_len,
 514                                         asset->sample_rate,
 515                                         sample_rate,
 516                                         start_source,
 517                                         direction);
 518 // Resample reverses to keep it running forward.
 519                         }
 520                         else
 521                         {
 522
 523 if(debug)
 524 printf("AModule::import_samples %d channel=%d start_source=%jd len=%d\n", __LINE__, edit->channel, start_source, (int)speed_fragment_len);
 525                                 file->set_audio_position(start_source);
 526                                 file->set_channel(edit->channel);
 527                                 result = file->read_samples(speed_buffer, speed_fragment_len);
 528 // Reverse fragment so ::render can apply transitions going forward.
 529 if(debug) printf("AModule::import_samples %d speed_buffer=%p data=%p speed_fragment_len=%d\n",
 530 __LINE__,
 531 (void*)speed_buffer,
 532 (void*)speed_buffer->get_data(),
 533 (int)speed_fragment_len);
 534                                 if(direction == PLAY_REVERSE)
 535                                 {
 536                                         Resample::reverse_buffer(speed_buffer->get_data(), speed_fragment_len);
 537                                 }
 538 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 539                         }
 540
 541 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 542                         get_cache()->check_in(asset);
 543 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 544                         file = 0;
 545
 546
 547
 548
 549
 550                 }
 551         }
 552         else
 553         {
 554                 nested_edl = 0;
 555                 asset = 0;
 556 if(debug) printf("AModule::import_samples %d %p %d\n", __LINE__, speed_buffer->get_data(), (int)speed_fragment_len);
 557                 if(speed_fragment_len > 0) bzero(speed_buffer->get_data(), speed_fragment_len * sizeof(double));
 558 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 559         }
 560 if(debug) printf("AModule::import_samples %d\n", __LINE__);
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570 // Stretch it to fit the speed curve
 571 // Need overlapping buffers to get the interpolation to work, but this
 572 // screws up sequential effects.
 573         if(have_speed)
 574         {
 575                 FloatAuto *previous = 0;
 576                 FloatAuto *next = 0;
 577                 FloatAutos *speed_autos = (FloatAutos*)track->automation->autos[AUTOMATION_SPEED];
 578                 double *buffer_samples = buffer->get_data();
 579                 double *speed_samples = speed_buffer->get_data();
 580
 581 //printf("AModule::import_samples %d %lld\n", __LINE__, speed_fragment_len);
 582
 583                 if(speed_fragment_len == 0)
 584                 {
 585                         bzero(buffer_samples, fragment_len * sizeof(double));
 586                         bzero(prev_tail, SPEED_OVERLAP * sizeof(double));
 587                         bzero(prev_head, SPEED_OVERLAP * sizeof(double));
 588                 }
 589                 else
 590                 {
 591 // buffer is now reversed
 592                         if(direction == PLAY_REVERSE)
 593                         {
 594                                 int out_offset = 0;
 595                                 speed_position = speed_position2;
 596         //printf("AModule::import_samples %d %lld %lld\n", __LINE__, start_project, speed_fragment_len);
 597                                 for(int64_t i = start_project + fragment_len;
 598                                         i != start_project;
 599                                         i--)
 600                                 {
 601         // funky sample reordering, because the source is a reversed buffer
 602                                         int in_offset = (int64_t)(speed_fragment_len - 1 - speed_position);
 603                                         CLAMP(in_offset, 0, speed_fragment_len - 1);
 604                                         buffer_samples[out_offset++] = speed_samples[in_offset];
 605                                         double speed = speed_autos->get_value(i,
 606                                                 PLAY_REVERSE,
 607                                                 previous,
 608                                                 next);
 609                                         speed_position -= speed;
 610                                 }
 611         //printf("AModule::import_samples %d %f\n", __LINE__, speed_position);
 612                         }
 613                         else
 614                         {
 615                                 int out_offset = 0;
 616 // position in buffer to read
 617                                 speed_position = speed_position1 - start_source;
 618
 619 //printf("AModule::import_samples %d %f\n", __LINE__, speed_position);
 620                                 for(int64_t i = start_project; i < start_project + fragment_len; i++)
 621                                 {
 622                                         double speed = speed_autos->get_value(i,
 623                                                 PLAY_FORWARD,
 624                                                 previous,
 625                                                 next);
 626                                         double next_speed_position = speed_position + speed;
 627
 628                                         int in_offset = (int)(speed_position);
 629                                         if(fabs(speed) >= 1.0)
 630                                         {
 631                                                 int total = abs(speed);
 632                                                 double accum = 0;
 633                                                 for(int j = 0; j < total; j++)
 634                                                 {
 635                                                         int in_offset2 = in_offset + (speed > 0 ? j : -j);
 636
 637                                                         CLAMP(in_offset2, 0, speed_fragment_len - 1);
 638                                                         accum += speed_samples[in_offset2];
 639                                                 }
 640
 641
 642                                                 buffer_samples[out_offset++] = accum / total;
 643                                         }
 644                                         else
 645                                         {
 646
 647
 648 // if(in_offset < 0 || in_offset >= speed_fragment_len)
 649 // printf("AModule::import_samples %d %d %d\n",
 650 // __LINE__,
 651 // in_offset,
 652 // speed_fragment_len);
 653
 654                                                 int in_offset1 = in_offset;
 655                                                 int in_offset2 = in_offset;
 656
 657                                                 if(speed < 0)
 658                                                 {
 659                                                         in_offset1 += SPEED_OVERLAP;
 660                                                         in_offset2 = in_offset1 - 1;
 661                                                 }
 662                                                 else
 663                                                 {
 664                                                         in_offset1 -= SPEED_OVERLAP;
 665                                                         in_offset2 = in_offset1 + 1;
 666                                                 }
 667
 668                                                 CLAMP(in_offset1, -SPEED_OVERLAP, speed_fragment_len - 1 + SPEED_OVERLAP);
 669                                                 CLAMP(in_offset2, -SPEED_OVERLAP, speed_fragment_len - 1 + SPEED_OVERLAP);
 670
 671                                                 double value1 = 0;
 672                                                 if(in_offset1 >= speed_fragment_len)
 673                                                 {
 674                                                         value1 = prev_head[in_offset1 - speed_fragment_len];
 675                                                 }
 676                                                 else
 677                                                 if(in_offset1 >= 0)
 678                                                 {
 679                                                         value1 = speed_samples[in_offset1];
 680                                                 }
 681                                                 else
 682                                                 {
 683 //printf("AModule::import_samples %d %d\n", __LINE__, in_offset1);
 684                                                         value1 = prev_tail[SPEED_OVERLAP + in_offset1];
 685                                                 }
 686 #if 0
 687                                                 double value2 = 0;
 688                                                 if(in_offset2 >= speed_fragment_len)
 689                                                 {
 690                                                         value2 = prev_head[in_offset2 - speed_fragment_len];
 691                                                 }
 692                                                 else
 693                                                 if(in_offset2 >= 0)
 694                                                 {
 695                                                         value2 = speed_samples()[in_offset2];
 696                                                 }
 697                                                 else
 698                                                 {
 699                                                         value2 = prev_tail[SPEED_OVERLAP + in_offset2];
 700                                                 }
 701
 702                                                 double fraction = speed_position - floor(speed_position);
 703                                                 buffer_samples[out_offset++] =
 704                                                         value1 * (1.0 - fraction) +
 705                                                         value2 * fraction;
 706 #endif
 707                                                 buffer_samples[out_offset++] = value1;
 708
 709
 710                                         }
 711
 712                                         speed_position = next_speed_position;
 713                                 }
 714                         }
 715
 716                         for(int i = 0; i < SPEED_OVERLAP; i++)
 717                         {
 718                                 int offset = speed_fragment_len -
 719                                         SPEED_OVERLAP +
 720                                         i;
 721                                 CLAMP(offset, 0, speed_fragment_len - 1);
 722 //printf("AModule::import_samples %d %d\n", __LINE__, offset, );
 723                                 prev_tail[i] = speed_samples[offset];
 724                                 offset = i;
 725                                 CLAMP(offset, 0, speed_fragment_len - 1);
 726                                 prev_head[i] = speed_samples[offset];
 727                         }
 728                 }
 729         }
 730
 731
 732
 733
 734
 735         return result;
 736 }
 737
 738
 739
 740 int AModule::render(Samples *buffer,
 741         int64_t input_len,
 742         int64_t start_position,
 743         int direction,
 744         int sample_rate,
 745         int use_nudge)
 746 {
 747         int64_t edl_rate = get_edl()->session->sample_rate;
 748         const int debug = 0;
 749
 750 if(debug) printf("AModule::render %d\n", __LINE__);
 751
 752         if(use_nudge)
 753                 start_position += track->nudge *
 754                         sample_rate /
 755                         edl_rate;
 756         AEdit *playable_edit;
 757         int64_t end_position;
 758         if(direction == PLAY_FORWARD)
 759                 end_position = start_position + input_len;
 760         else
 761                 end_position = start_position - input_len;
 762         int buffer_offset = 0;
 763         int result = 0;
 764
 765
 766 // // Flip range around so the source is always read forward.
 767 //      if(direction == PLAY_REVERSE)
 768 //      {
 769 //              start_project -= input_len;
 770 //              end_position -= input_len;
 771 //      }
 772
 773
 774 // Clear buffer
 775         bzero(buffer->get_data(), input_len * sizeof(double));
 776
 777 // The EDL is normalized to the requested sample rate because
 778 // the requested rate may be the project sample rate and a sample rate
 779 // might as well be directly from the source rate to the requested rate.
 780 // Get first edit containing the range
 781         if(direction == PLAY_FORWARD)
 782                 playable_edit = (AEdit*)track->edits->first;
 783         else
 784                 playable_edit = (AEdit*)track->edits->last;
 785 if(debug) printf("AModule::render %d\n", __LINE__);
 786
 787         while(playable_edit)
 788         {
 789                 int64_t edit_start = playable_edit->startproject;
 790                 int64_t edit_end = playable_edit->startproject + playable_edit->length;
 791
 792 // Normalize to requested rate
 793                 edit_start = edit_start * sample_rate / edl_rate;
 794                 edit_end = edit_end * sample_rate / edl_rate;
 795
 796                 if(direction == PLAY_FORWARD)
 797                 {
 798                         if(start_position < edit_end && end_position > edit_start)
 799                         {
 800                                 break;
 801                         }
 802                         playable_edit = (AEdit*)playable_edit->next;
 803                 }
 804                 else
 805                 {
 806                         if(end_position < edit_end && start_position > edit_start)
 807                         {
 808                                 break;
 809                         }
 810                         playable_edit = (AEdit*)playable_edit->previous;
 811                 }
 812         }
 813
 814
 815 if(debug) printf("AModule::render %d\n", __LINE__);
 816
 817
 818
 819
 820
 821 // Fill output one fragment at a time
 822         while(start_position != end_position)
 823         {
 824                 int64_t fragment_len = input_len;
 825
 826 if(debug) printf("AModule::render %d %jd %jd\n", __LINE__, start_position, end_position);
 827 // Clamp fragment to end of input
 828                 if(direction == PLAY_FORWARD &&
 829                         start_position + fragment_len > end_position)
 830                         fragment_len = end_position - start_position;
 831                 else
 832                 if(direction == PLAY_REVERSE &&
 833                         start_position - fragment_len < end_position)
 834                         fragment_len = start_position - end_position;
 835 if(debug) printf("AModule::render %d %jd\n", __LINE__, fragment_len);
 836
 837 // Normalize position here since update_transition is a boolean operation.
 838                 update_transition(start_position *
 839                                 edl_rate /
 840                                 sample_rate,
 841                         PLAY_FORWARD);
 842
 843                 if(playable_edit)
 844                 {
 845                         AEdit *previous_edit = (AEdit*)playable_edit->previous;
 846
 847 // Normalize EDL positions to requested rate
 848                         int64_t edit_startproject = playable_edit->startproject;
 849                         int64_t edit_endproject = playable_edit->startproject + playable_edit->length;
 850                         int64_t edit_startsource = playable_edit->startsource;
 851 if(debug) printf("AModule::render %d %jd\n", __LINE__, fragment_len);
 852
 853                         edit_startproject = edit_startproject * sample_rate / edl_rate;
 854                         edit_endproject = edit_endproject * sample_rate / edl_rate;
 855                         edit_startsource = edit_startsource * sample_rate / edl_rate;
 856 if(debug) printf("AModule::render %d %jd\n", __LINE__, fragment_len);
 857
 858
 859
 860 // Clamp fragment to end of edit
 861                         if(direction == PLAY_FORWARD &&
 862                                 start_position + fragment_len > edit_endproject)
 863                                 fragment_len = edit_endproject - start_position;
 864                         else
 865                         if(direction == PLAY_REVERSE &&
 866                                 start_position - fragment_len < edit_startproject)
 867                                 fragment_len = start_position - edit_startproject;
 868 if(debug) printf("AModule::render %d %jd\n", __LINE__, fragment_len);
 869
 870 // Clamp to end of transition
 871                         int64_t transition_len = 0;
 872
 873                         if(transition &&
 874                                 previous_edit)
 875                         {
 876                                 transition_len = transition->length *
 877                                         sample_rate /
 878                                         edl_rate;
 879                                 if(direction == PLAY_FORWARD &&
 880                                         start_position < edit_startproject + transition_len &&
 881                                         start_position + fragment_len > edit_startproject + transition_len)
 882                                         fragment_len = edit_startproject + transition_len - start_position;
 883                                 else
 884                                 if(direction == PLAY_REVERSE &&
 885                                         start_position > edit_startproject + transition_len &&
 886                                         start_position - fragment_len < edit_startproject + transition_len)
 887                                         fragment_len = start_position - edit_startproject - transition_len;
 888                         }
 889 if(debug) printf("AModule::render %d buffer_offset=%d fragment_len=%jd\n",
 890 __LINE__,
 891 buffer_offset,
 892 fragment_len);
 893
 894                         Samples output(buffer);
 895                         output.set_offset(output.get_offset() + buffer_offset);
 896                         if(import_samples(playable_edit,
 897                                 start_position,
 898                                 edit_startproject,
 899                                 edit_startsource,
 900                                 direction,
 901                                 sample_rate,
 902                                 &output,
 903                                 fragment_len)) result = 1;
 904
 905 if(debug) printf("AModule::render %d\n", __LINE__);
 906
 907
 908 // Read transition into temp and render
 909                         if(transition && previous_edit)
 910                         {
 911                                 int64_t previous_startproject = previous_edit->startproject *
 912                                         sample_rate /
 913                                         edl_rate;
 914                                 int64_t previous_startsource = previous_edit->startsource *
 915                                         sample_rate /
 916                                         edl_rate;
 917
 918 // Allocate transition temp size
 919                                 int transition_fragment_len = fragment_len;
 920                                 if(direction == PLAY_FORWARD &&
 921                                         fragment_len + start_position > edit_startproject + transition_len)
 922                                         fragment_len = edit_startproject + transition_len - start_position;
 923
 924
 925 // Read into temp buffers
 926 // Temp + master or temp + temp ? temp + master
 927                                 if(transition_temp &&
 928                                         transition_temp->get_allocated() < fragment_len)
 929                                 {
 930                                         delete transition_temp;
 931                                         transition_temp = 0;
 932                                 }
 933
 934                                 if(!transition_temp)
 935                                 {
 936                                         transition_temp = new Samples(fragment_len);
 937                                 }
 938
 939 if(debug) printf("AModule::render %d %jd\n", __LINE__, fragment_len);
 940
 941                                 if(transition_fragment_len > 0)
 942                                 {
 943 // Previous_edit is always the outgoing segment, regardless of direction
 944                                         import_samples(previous_edit,
 945                                                 start_position,
 946                                                 previous_startproject,
 947                                                 previous_startsource,
 948                                                 direction,
 949                                                 sample_rate,
 950                                                 transition_temp,
 951                                                 transition_fragment_len);
 952                                         int64_t current_position;
 953
 954 // Reverse buffers here so transitions always render forward.
 955                                         if(direction == PLAY_REVERSE)
 956                                         {
 957                                                 Resample::reverse_buffer(output.get_data(), transition_fragment_len);
 958                                                 Resample::reverse_buffer(transition_temp->get_data(), transition_fragment_len);
 959                                                 current_position = start_position -
 960                                                         transition_fragment_len -
 961                                                         edit_startproject;
 962                                         }
 963                                         else
 964                                         {
 965                                                 current_position = start_position - edit_startproject;
 966                                         }
 967
 968                                         transition_server->process_transition(
 969                                                 transition_temp,
 970                                                 &output,
 971                                                 current_position,
 972                                                 transition_fragment_len,
 973                                                 transition->length);
 974
 975 // Reverse output buffer here so transitions always render forward.
 976                                         if(direction == PLAY_REVERSE)
 977                                                 Resample::reverse_buffer(output.get_data(),
 978                                                         transition_fragment_len);
 979                                 }
 980                         }
 981 if(debug) printf("AModule::render %d start_position=%jd end_position=%jd fragment_len=%jd\n",
 982 __LINE__,
 983 start_position,
 984 end_position,
 985 fragment_len);
 986
 987                         if(direction == PLAY_REVERSE)
 988                         {
 989                                 if(playable_edit && start_position - fragment_len <= edit_startproject)
 990                                         playable_edit = (AEdit*)playable_edit->previous;
 991                         }
 992                         else
 993                         {
 994                                 if(playable_edit && start_position + fragment_len >= edit_endproject)
 995                                         playable_edit = (AEdit*)playable_edit->next;
 996                         }
 997                 }
 998
 999                 if(fragment_len > 0)
1000                 {
1001                         buffer_offset += fragment_len;
1002                         if(direction == PLAY_FORWARD)
1003                                 start_position += fragment_len;
1004                         else
1005                                 start_position -= fragment_len;
1006                 }
1007         }
1008
1009 if(debug) printf("AModule::render %d\n", __LINE__);
1010
1011         return result;
1012 }
1013
1014
1015
1016
1017
1018
1019
1020
1021