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