gtk2_ardour/audio_streamview.cc

   1 /*
   2     Copyright (C) 2001, 2006 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <cmath>
  20 #include <cassert>
  21 #include <utility>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include "ardour/audioplaylist.h"
  28 #include "ardour/audioregion.h"
  29 #include "ardour/audiofilesource.h"
  30 #include "ardour/audio_diskstream.h"
  31 #include "ardour/audio_track.h"
  32 #include "ardour/source.h"
  33 #include "ardour/region_factory.h"
  34 #include "ardour/profile.h"
  35
  36 #include "audio_streamview.h"
  37 #include "audio_region_view.h"
  38 #include "tape_region_view.h"
  39 #include "audio_time_axis.h"
  40 #include "canvas-waveview.h"
  41 #include "canvas-simplerect.h"
  42 #include "region_selection.h"
  43 #include "selection.h"
  44 #include "public_editor.h"
  45 #include "ardour_ui.h"
  46 #include "crossfade_view.h"
  47 #include "rgb_macros.h"
  48 #include "gui_thread.h"
  49 #include "utils.h"
  50
  51 #include "i18n.h"
  52
  53 using namespace std;
  54 using namespace ARDOUR;
  55 using namespace PBD;
  56 using namespace Editing;
  57
  58 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  59         : StreamView (tv)
  60 {
  61         crossfades_visible = true;
  62         color_handler ();
  63         _amplitude_above_axis = 1.0;
  64
  65         use_rec_regions = tv.editor().show_waveforms_recording ();
  66
  67         Config->ParameterChanged.connect (sigc::mem_fun (*this, &AudioStreamView::parameter_changed));
  68 }
  69
  70 AudioStreamView::~AudioStreamView ()
  71 {
  72 }
  73
  74 int
  75 AudioStreamView::set_samples_per_unit (gdouble spp)
  76 {
  77         StreamView::set_samples_per_unit(spp);
  78
  79         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
  80                 xi->second->set_samples_per_unit (spp);
  81         }
  82
  83         return 0;
  84 }
  85
  86 int
  87 AudioStreamView::set_amplitude_above_axis (gdouble app)
  88 {
  89         RegionViewList::iterator i;
  90
  91         if (app < 1.0) {
  92                 return -1;
  93         }
  94
  95         _amplitude_above_axis = app;
  96
  97         for (i = region_views.begin(); i != region_views.end(); ++i) {
  98                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
  99                 if (arv)
 100                         arv->set_amplitude_above_axis (app);
 101         }
 102
 103         return 0;
 104 }
 105
 106 RegionView*
 107 AudioStreamView::create_region_view (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 108 {
 109         AudioRegionView *region_view = 0;
 110         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 111
 112         if (region == 0) {
 113                 return 0;
 114         }
 115
 116         switch (_trackview.audio_track()->mode()) {
 117
 118         case NonLayered:
 119         case Normal:
 120                 if (recording) {
 121                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 122                                         _samples_per_unit, region_color, recording, TimeAxisViewItem::Visibility(
 123                                                         TimeAxisViewItem::ShowFrame | TimeAxisViewItem::HideFrameRight));
 124                 } else {
 125                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 126                                         _samples_per_unit, region_color);
 127                 }
 128                 break;
 129         case Destructive:
 130                 region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
 131                                 _samples_per_unit, region_color);
 132                 break;
 133         default:
 134                 fatal << string_compose (_("programming error: %1"), "illegal track mode in ::add_region_view_internal") << endmsg;
 135                 /*NOTREACHED*/
 136
 137         }
 138
 139         region_view->init (region_color, wait_for_waves);
 140         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 141         region_view->set_height (child_height ());
 142
 143         /* if its the special single-sample length that we use for rec-regions, make it
 144            insensitive to events
 145         */
 146
 147         if (region->length() == 1) {
 148                 region_view->set_sensitive (false);
 149         }
 150
 151         region_view->set_waveform_scale (Config->get_waveform_scale ());
 152         region_view->set_waveform_shape (Config->get_waveform_shape ());
 153         region_view->set_waveform_visible (Config->get_show_waveforms ());
 154
 155         return region_view;
 156 }
 157
 158 RegionView*
 159 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 160 {
 161         RegionView *region_view = create_region_view (r, wait_for_waves, recording);
 162         if (region_view == 0) {
 163                 return 0;
 164         }
 165
 166 //      if(!recording){
 167 //              for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 168 //                      if ((*i)->region() == r) {
 169 //                              cerr << "audio_streamview in add_region_view_internal region found" << endl;
 170                                 /* great. we already have a AudioRegionView for this Region. use it again. */
 171
 172 //                              (*i)->set_valid (true);
 173
 174                                 // this might not be necessary
 175 //                              AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 176
 177 //                              if (arv) {
 178 //                                      arv->set_waveform_scale (_waveform_scale);
 179 //                                      arv->set_waveform_shape (_waveform_shape);
 180 //                              }
 181
 182 //                              return NULL;
 183 //                      }
 184 //              }
 185 //      }
 186
 187         region_views.push_front (region_view);
 188
 189         /* catch regionview going away */
 190         r->GoingAway.connect (bind (mem_fun (*this, &AudioStreamView::remove_region_view), boost::weak_ptr<Region> (r)));
 191
 192         RegionViewAdded (region_view);
 193
 194         return region_view;
 195 }
 196
 197 void
 198 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 199 {
 200         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_region_view), weak_r));
 201
 202         boost::shared_ptr<Region> r (weak_r.lock());
 203
 204         if (!r) {
 205                 return;
 206         }
 207
 208         if (!_trackview.session().deletion_in_progress()) {
 209
 210                 for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 211                         CrossfadeViewList::iterator tmp;
 212
 213                         tmp = i;
 214                         ++tmp;
 215
 216                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 217                         if (ar && i->second->crossfade->involves (ar)) {
 218                                 delete i->second;
 219                                 crossfade_views.erase (i);
 220                         }
 221
 222                         i = tmp;
 223                 }
 224         }
 225
 226         StreamView::remove_region_view(r);
 227 }
 228
 229 void
 230 AudioStreamView::undisplay_diskstream ()
 231 {
 232         StreamView::undisplay_diskstream();
 233
 234         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 235                 delete i->second;
 236         }
 237
 238         crossfade_views.clear ();
 239 }
 240
 241 void
 242 AudioStreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 243 {
 244         boost::shared_ptr<Diskstream> sp (ds.lock());
 245         if (sp) {
 246                 playlist_modified (sp);
 247         }
 248 }
 249
 250 void
 251 AudioStreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 252 {
 253         /* we do not allow shared_ptr<T> to be bound to slots */
 254         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::playlist_modified_weak), ds));
 255
 256         StreamView::playlist_modified (ds);
 257
 258         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 259
 260         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 261                 i->second->get_canvas_group()->raise_to_top();
 262         }
 263 }
 264
 265 void
 266 AudioStreamView::playlist_changed_weak (boost::weak_ptr<Diskstream> ds)
 267 {
 268         boost::shared_ptr<Diskstream> sp (ds.lock());
 269         if (sp) {
 270                 playlist_changed (sp);
 271         }
 272 }
 273
 274 void
 275 AudioStreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 276 {
 277         ENSURE_GUI_THREAD (bind (
 278                         mem_fun (*this, &AudioStreamView::playlist_changed_weak),
 279                         boost::weak_ptr<Diskstream> (ds)));
 280
 281         StreamView::playlist_changed(ds);
 282
 283         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 284         if (apl) {
 285                 playlist_connections.push_back (apl->NewCrossfade.connect (
 286                                 mem_fun (*this, &AudioStreamView::add_crossfade)));
 287         }
 288 }
 289
 290 void
 291 AudioStreamView::add_crossfade_weak (boost::weak_ptr<Crossfade> crossfade)
 292 {
 293         boost::shared_ptr<Crossfade> sp (crossfade.lock());
 294
 295         if (!sp) {
 296                 return;
 297         }
 298
 299         add_crossfade (sp);
 300 }
 301
 302 void
 303 AudioStreamView::add_crossfade (boost::shared_ptr<Crossfade> crossfade)
 304 {
 305         AudioRegionView* lview = 0;
 306         AudioRegionView* rview = 0;
 307
 308         /* we do not allow shared_ptr<T> to be bound to slots */
 309
 310         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_crossfade_weak), boost::weak_ptr<Crossfade> (crossfade)));
 311
 312         /* first see if we already have a CrossfadeView for this Crossfade */
 313
 314         CrossfadeViewList::iterator i = crossfade_views.find (crossfade);
 315         if (i != crossfade_views.end()) {
 316                 if (!crossfades_visible || _layer_display == Stacked) {
 317                         i->second->hide();
 318                 } else {
 319                         i->second->show ();
 320                 }
 321                 i->second->set_valid (true);
 322                 return;
 323         }
 324
 325         /* create a new one */
 326
 327         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 328                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 329
 330                 if (!lview && arv && (arv->region() == crossfade->out())) {
 331                         lview = arv;
 332                 }
 333                 if (!rview && arv && (arv->region() == crossfade->in())) {
 334                         rview = arv;
 335                 }
 336         }
 337
 338         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display (),
 339                                                _trackview,
 340                                                 crossfade,
 341                                                _samples_per_unit,
 342                                                region_color,
 343                                                *lview, *rview);
 344         cv->set_valid (true);
 345         crossfade->Invalidated.connect (mem_fun (*this, &AudioStreamView::remove_crossfade));
 346         crossfade_views[cv->crossfade] = cv;
 347         if (!_trackview.session().config.get_xfades_visible() || !crossfades_visible || _layer_display == Stacked) {
 348                 cv->hide ();
 349         }
 350 }
 351
 352 void
 353 AudioStreamView::remove_crossfade (boost::shared_ptr<Region> r)
 354 {
 355         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_crossfade), r));
 356
 357         boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
 358
 359         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 360                 if (i->second->crossfade == xfade) {
 361                         delete i->second;
 362                         crossfade_views.erase (i);
 363                         break;
 364                 }
 365         }
 366 }
 367
 368 void
 369 AudioStreamView::redisplay_diskstream ()
 370 {
 371         list<RegionView *>::iterator i;
 372         CrossfadeViewList::iterator xi, tmpx;
 373
 374         // Flag region views as invalid and disable drawing
 375         for (i = region_views.begin(); i != region_views.end(); ++i) {
 376                 (*i)->set_valid (false);
 377                 (*i)->enable_display (false);
 378         }
 379
 380         // Flag crossfade views as invalid
 381         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 382                 xi->second->set_valid (false);
 383                 if (xi->second->visible() && _layer_display != Stacked) {
 384                         xi->second->show ();
 385                 }
 386         }
 387
 388         // Add and display region and crossfade views, and flag them as valid
 389
 390         if (_trackview.is_audio_track()) {
 391                 _trackview.get_diskstream()->playlist()->foreach_region(
 392                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 393                         );
 394
 395                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(
 396                                 _trackview.get_diskstream()->playlist()
 397                         );
 398
 399                 if (apl) {
 400                         apl->foreach_crossfade (sigc::mem_fun (*this, &AudioStreamView::add_crossfade));
 401                 }
 402         }
 403
 404         // Remove invalid crossfade views
 405         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 406                 tmpx = xi;
 407                 tmpx++;
 408
 409                 if (!xi->second->valid()) {
 410                         delete xi->second;
 411                         crossfade_views.erase (xi);
 412                 }
 413
 414                 xi = tmpx;
 415         }
 416
 417         // Stack regions by layer, and remove invalid regions
 418         layer_regions();
 419 }
 420
 421 void
 422 AudioStreamView::set_show_waveforms (bool yn)
 423 {
 424         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 425                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 426                 if (arv) {
 427                         arv->set_waveform_visible (yn);
 428                 }
 429         }
 430 }
 431
 432 void
 433 AudioStreamView::set_waveform_shape (WaveformShape shape)
 434 {
 435         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 436                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 437                 if (arv)
 438                         arv->set_waveform_shape (shape);
 439         }
 440 }
 441
 442 void
 443 AudioStreamView::set_waveform_scale (WaveformScale scale)
 444 {
 445         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 446                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 447                 if (arv) {
 448                         arv->set_waveform_scale (scale);
 449                 }
 450         }
 451 }
 452
 453 void
 454 AudioStreamView::setup_rec_box ()
 455 {
 456         //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
 457
 458         if (_trackview.session().transport_rolling()) {
 459
 460                 // cerr << "\trolling\n";
 461
 462                 if (!rec_active &&
 463                     _trackview.session().record_status() == Session::Recording &&
 464                     _trackview.get_diskstream()->record_enabled()) {
 465                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 466
 467                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 468
 469                                 SourceList sources;
 470
 471                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 472                                         (*prc).disconnect();
 473                                 }
 474                                 rec_data_ready_connections.clear();
 475
 476                                 // FIXME
 477                                 boost::shared_ptr<AudioDiskstream> ads = boost::dynamic_pointer_cast<AudioDiskstream>(_trackview.get_diskstream());
 478                                 assert(ads);
 479
 480                                 for (uint32_t n=0; n < ads->n_channels().n_audio(); ++n) {
 481                                         boost::shared_ptr<AudioFileSource> src = boost::static_pointer_cast<AudioFileSource> (ads->write_source (n));
 482                                         if (src) {
 483                                                 sources.push_back (src);
 484
 485                                                 rec_data_ready_connections.push_back (src->PeakRangeReady.connect (bind
 486                                                         (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), boost::weak_ptr<Source>(src))));
 487                                         }
 488                                 }
 489
 490                                 // handle multi
 491
 492                                 nframes_t start = 0;
 493                                 if (rec_regions.size() > 0) {
 494                                         start = rec_regions.back().first->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 495                                 }
 496
 497                                 boost::shared_ptr<AudioRegion> region (boost::dynamic_pointer_cast<AudioRegion>
 498                                                                        (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags), false)));
 499                                 assert(region);
 500                                 region->block_property_changes ();
 501                                 region->set_position (_trackview.session().transport_frame(), this);
 502                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 503                         }
 504
 505                         /* start a new rec box */
 506
 507                         boost::shared_ptr<AudioTrack> at;
 508
 509                         at = _trackview.audio_track(); /* we know what it is already */
 510                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 511                         nframes_t frame_pos = ds->current_capture_start ();
 512                         gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
 513                         gdouble xend;
 514                         uint32_t fill_color;
 515
 516                         switch (_trackview.audio_track()->mode()) {
 517                         case Normal:
 518                         case NonLayered:
 519                                 xend = xstart;
 520                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 521                                 break;
 522
 523                         case Destructive:
 524                                 xend = xstart + 2;
 525                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 526                                 /* make the recording rect translucent to allow
 527                                    the user to see the peak data coming in, etc.
 528                                 */
 529                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 530                                 break;
 531                         }
 532
 533                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 534                         rec_rect->property_x1() = xstart;
 535                         rec_rect->property_y1() = 1.0;
 536                         rec_rect->property_x2() = xend;
 537                         rec_rect->property_y2() = child_height ();
 538                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 539                         rec_rect->property_outline_what() = 0x1 | 0x2 | 0x4 | 0x8;
 540                         rec_rect->property_fill_color_rgba() = fill_color;
 541                         rec_rect->lower_to_bottom();
 542
 543                         RecBoxInfo recbox;
 544                         recbox.rectangle = rec_rect;
 545                         recbox.start = _trackview.session().transport_frame();
 546                         recbox.length = 0;
 547
 548                         rec_rects.push_back (recbox);
 549
 550                         screen_update_connection.disconnect();
 551                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &AudioStreamView::update_rec_box));
 552                         rec_updating = true;
 553                         rec_active = true;
 554
 555                 } else if (rec_active &&
 556                            (_trackview.session().record_status() != Session::Recording ||
 557                             !_trackview.get_diskstream()->record_enabled())) {
 558                         screen_update_connection.disconnect();
 559                         rec_active = false;
 560                         rec_updating = false;
 561                 }
 562
 563         } else {
 564
 565                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 566
 567                 if (!rec_rects.empty() || !rec_regions.empty()) {
 568
 569                         /* disconnect rapid update */
 570                         screen_update_connection.disconnect();
 571
 572                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 573                                 (*prc).disconnect();
 574                         }
 575                         rec_data_ready_connections.clear();
 576
 577                         rec_updating = false;
 578                         rec_active = false;
 579
 580                         /* remove temp regions */
 581
 582                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 583                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 584
 585                                 tmp = iter;
 586                                 ++tmp;
 587
 588                                 (*iter).first->drop_references ();
 589
 590                                 iter = tmp;
 591                         }
 592
 593                         rec_regions.clear();
 594
 595                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 596
 597                         /* transport stopped, clear boxes */
 598                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 599                                 RecBoxInfo &rect = (*iter);
 600                                 delete rect.rectangle;
 601                         }
 602
 603                         rec_rects.clear();
 604
 605                 }
 606         }
 607 }
 608
 609 void
 610 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 611 {
 612         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 613                 (i->second->*pmf) ();
 614         }
 615 }
 616
 617 void
 618 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 619 {
 620         ENSURE_GUI_THREAD(bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), start, cnt, weak_src));
 621
 622         boost::shared_ptr<Source> src (weak_src.lock());
 623
 624         if (!src) {
 625                 return;
 626         }
 627
 628         // this is called from the peak building thread
 629
 630         if (rec_data_ready_map.size() == 0 || start+cnt > last_rec_data_frame) {
 631                 last_rec_data_frame = start + cnt;
 632         }
 633
 634         rec_data_ready_map[src] = true;
 635
 636         if (rec_data_ready_map.size() == _trackview.get_diskstream()->n_channels().n_audio()) {
 637                 this->update_rec_regions ();
 638                 rec_data_ready_map.clear();
 639         }
 640 }
 641
 642 void
 643 AudioStreamView::update_rec_regions ()
 644 {
 645         if (use_rec_regions) {
 646                 uint32_t n = 0;
 647
 648                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 649
 650                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 651
 652                         tmp = iter;
 653                         ++tmp;
 654
 655                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 656                                 /* rect already hidden, this region is done */
 657                                 iter = tmp;
 658                                 continue;
 659                         }
 660
 661                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(iter->first);
 662                         if (!region) {
 663                                 continue;
 664                         }
 665
 666                         nframes_t origlen = region->length();
 667
 668                         if (region == rec_regions.back().first && rec_active) {
 669
 670                                 if (last_rec_data_frame > region->start()) {
 671
 672                                         nframes_t nlen = last_rec_data_frame - region->start();
 673
 674                                         if (nlen != region->length()) {
 675
 676                                                 region->freeze ();
 677                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 678                                                 region->set_length (nlen, this);
 679                                                 region->thaw ("updated");
 680
 681                                                 if (origlen == 1) {
 682                                                         /* our special initial length */
 683                                                         add_region_view_internal (region, false, true);
 684                                                 }
 685
 686                                                 /* also update rect */
 687                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 688                                                 gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
 689                                                 rect->property_x2() = xend;
 690                                         }
 691                                 }
 692
 693                         } else {
 694
 695                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 696
 697                                 if (nlen != region->length()) {
 698
 699                                         if (region->source_length(0) >= region->start() + nlen) {
 700
 701                                                 region->freeze ();
 702                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 703                                                 region->set_length (nlen, this);
 704                                                 region->thaw ("updated");
 705
 706                                                 if (origlen == 1) {
 707                                                         /* our special initial length */
 708                                                         add_region_view_internal (region, false, true);
 709                                                 }
 710
 711                                                 /* also hide rect */
 712                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 713                                                 rect->hide();
 714
 715                                         }
 716                                 }
 717                         }
 718
 719                         iter = tmp;
 720                 }
 721         }
 722 }
 723
 724 void
 725 AudioStreamView::show_all_fades ()
 726 {
 727         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 728                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 729                 if (arv) {
 730                         arv->set_fade_visibility (true);
 731                 }
 732         }
 733 }
 734
 735 void
 736 AudioStreamView::hide_all_fades ()
 737 {
 738         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 739                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 740                 if (arv) {
 741                         arv->set_fade_visibility (false);
 742                 }
 743         }
 744 }
 745
 746 void
 747 AudioStreamView::show_all_xfades ()
 748 {
 749         foreach_crossfadeview (&CrossfadeView::show);
 750         crossfades_visible = true;
 751 }
 752
 753 void
 754 AudioStreamView::hide_all_xfades ()
 755 {
 756         foreach_crossfadeview (&CrossfadeView::hide);
 757         crossfades_visible = false;
 758 }
 759
 760 void
 761 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 762 {
 763         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 764                 if (i->second->crossfade->involves (rv.audio_region())) {
 765                         i->second->fake_hide ();
 766                 }
 767         }
 768 }
 769
 770 void
 771 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 772 {
 773         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 774                 if (i->second->crossfade->involves (rv.audio_region()) && i->second->visible() && _layer_display != Stacked) {
 775                         i->second->show ();
 776                 }
 777         }
 778 }
 779
 780 void
 781 AudioStreamView::color_handler ()
 782 {
 783         //case cAudioTrackBase:
 784         if (_trackview.is_track()) {
 785                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 786         }
 787
 788         //case cAudioBusBase:
 789         if (!_trackview.is_track()) {
 790                 if (Profile->get_sae() && _trackview.route()->is_master()) {
 791                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioMasterBusBase.get();
 792                 } else {
 793                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 794                 }
 795         }
 796 }
 797
 798 void
 799 AudioStreamView::update_contents_height ()
 800 {
 801         StreamView::update_contents_height ();
 802
 803         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 804                 if (_layer_display == Overlaid) {
 805                         i->second->show ();
 806                         i->second->set_height (height);
 807                 } else {
 808                         i->second->hide ();
 809                 }
 810         }
 811 }
 812
 813 void
 814 AudioStreamView::parameter_changed (string const & p)
 815 {
 816         if (p == "show-waveforms") {
 817                 set_show_waveforms (Config->get_show_waveforms ());
 818         } else if (p == "waveform-scale") {
 819                 set_waveform_scale (Config->get_waveform_scale ());
 820         } else if (p == "waveform-shape") {
 821                 set_waveform_shape (Config->get_waveform_shape ());
 822         }
 823 }