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 #include "ardour/rc_configuration.h"
  36 #include "ardour/session.h"
  37
  38 #include "audio_streamview.h"
  39 #include "audio_region_view.h"
  40 #include "tape_region_view.h"
  41 #include "audio_time_axis.h"
  42 #include "canvas-waveview.h"
  43 #include "canvas-simplerect.h"
  44 #include "region_selection.h"
  45 #include "selection.h"
  46 #include "public_editor.h"
  47 #include "ardour_ui.h"
  48 #include "crossfade_view.h"
  49 #include "rgb_macros.h"
  50 #include "gui_thread.h"
  51 #include "utils.h"
  52
  53 #include "i18n.h"
  54
  55 using namespace std;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Editing;
  59
  60 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  61         : StreamView (tv)
  62 {
  63         crossfades_visible = true;
  64         color_handler ();
  65         _amplitude_above_axis = 1.0;
  66
  67         use_rec_regions = tv.editor().show_waveforms_recording ();
  68
  69         Config->ParameterChanged.connect (sigc::mem_fun (*this, &AudioStreamView::parameter_changed));
  70 }
  71
  72 AudioStreamView::~AudioStreamView ()
  73 {
  74 }
  75
  76 int
  77 AudioStreamView::set_samples_per_unit (gdouble spp)
  78 {
  79         StreamView::set_samples_per_unit(spp);
  80
  81         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
  82                 xi->second->set_samples_per_unit (spp);
  83         }
  84
  85         return 0;
  86 }
  87
  88 int
  89 AudioStreamView::set_amplitude_above_axis (gdouble app)
  90 {
  91         RegionViewList::iterator i;
  92
  93         if (app < 1.0) {
  94                 return -1;
  95         }
  96
  97         _amplitude_above_axis = app;
  98
  99         for (i = region_views.begin(); i != region_views.end(); ++i) {
 100                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 101                 if (arv)
 102                         arv->set_amplitude_above_axis (app);
 103         }
 104
 105         return 0;
 106 }
 107
 108 RegionView*
 109 AudioStreamView::create_region_view (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 110 {
 111         AudioRegionView *region_view = 0;
 112         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 113
 114         if (region == 0) {
 115                 return 0;
 116         }
 117
 118         switch (_trackview.audio_track()->mode()) {
 119
 120         case NonLayered:
 121         case Normal:
 122                 if (recording) {
 123                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 124                                         _samples_per_unit, region_color, recording, TimeAxisViewItem::Visibility(
 125                                                         TimeAxisViewItem::ShowFrame | TimeAxisViewItem::HideFrameRight));
 126                 } else {
 127                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 128                                         _samples_per_unit, region_color);
 129                 }
 130                 break;
 131         case Destructive:
 132                 region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
 133                                 _samples_per_unit, region_color);
 134                 break;
 135         default:
 136                 fatal << string_compose (_("programming error: %1"), "illegal track mode in ::add_region_view_internal") << endmsg;
 137                 /*NOTREACHED*/
 138
 139         }
 140
 141         region_view->init (region_color, wait_for_waves);
 142         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 143         region_view->set_height (child_height ());
 144
 145         /* if its the special single-sample length that we use for rec-regions, make it
 146            insensitive to events
 147         */
 148
 149         if (region->length() == 1) {
 150                 region_view->set_sensitive (false);
 151         }
 152
 153         region_view->set_waveform_scale (Config->get_waveform_scale ());
 154         region_view->set_waveform_shape (Config->get_waveform_shape ());
 155         region_view->set_waveform_visible (Config->get_show_waveforms ());
 156
 157         return region_view;
 158 }
 159
 160 RegionView*
 161 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 162 {
 163         RegionView *region_view = create_region_view (r, wait_for_waves, recording);
 164         if (region_view == 0) {
 165                 return 0;
 166         }
 167
 168 //      if(!recording){
 169 //              for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 170 //                      if ((*i)->region() == r) {
 171 //                              cerr << "audio_streamview in add_region_view_internal region found" << endl;
 172                                 /* great. we already have a AudioRegionView for this Region. use it again. */
 173
 174 //                              (*i)->set_valid (true);
 175
 176                                 // this might not be necessary
 177 //                              AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 178
 179 //                              if (arv) {
 180 //                                      arv->set_waveform_scale (_waveform_scale);
 181 //                                      arv->set_waveform_shape (_waveform_shape);
 182 //                              }
 183
 184 //                              return NULL;
 185 //                      }
 186 //              }
 187 //      }
 188
 189         region_views.push_front (region_view);
 190
 191         /* catch regionview going away */
 192         cerr << this << " connected to region " << r << endl;
 193         r->GoingAway.connect (sigc::bind (sigc::mem_fun (*this, &AudioStreamView::remove_region_view), boost::weak_ptr<Region> (r)));
 194
 195         RegionViewAdded (region_view);
 196
 197         return region_view;
 198 }
 199
 200 void
 201 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 202 {
 203         cerr << this << " RRV entry\n";
 204
 205         ENSURE_GUI_THREAD (*this, &AudioStreamView::remove_region_view, weak_r)
 206
 207         boost::shared_ptr<Region> r (weak_r.lock());
 208
 209         if (!r) {
 210                 return;
 211         }
 212
 213         cerr << this << " RRV action for  " << r << endl;
 214
 215         if (!_trackview.session().deletion_in_progress()) {
 216
 217                 for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 218                         CrossfadeViewList::iterator tmp;
 219
 220                         tmp = i;
 221                         ++tmp;
 222
 223                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 224                         if (ar && i->second->crossfade->involves (ar)) {
 225                                 delete i->second;
 226                                 crossfade_views.erase (i);
 227                         }
 228
 229                         i = tmp;
 230                 }
 231         }
 232
 233         StreamView::remove_region_view(r);
 234 }
 235
 236 void
 237 AudioStreamView::undisplay_diskstream ()
 238 {
 239         StreamView::undisplay_diskstream();
 240
 241         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 242                 delete i->second;
 243         }
 244
 245         crossfade_views.clear ();
 246 }
 247
 248 void
 249 AudioStreamView::playlist_modified_weak (boost::weak_ptr<Diskstream> ds)
 250 {
 251         boost::shared_ptr<Diskstream> sp (ds.lock());
 252         if (sp) {
 253                 playlist_modified (sp);
 254         }
 255 }
 256
 257 void
 258 AudioStreamView::playlist_modified (boost::shared_ptr<Diskstream> ds)
 259 {
 260         /* we do not allow shared_ptr<T> to be bound to slots */
 261         ENSURE_GUI_THREAD (*this, &AudioStreamView::playlist_modified_weak, ds)
 262
 263         StreamView::playlist_modified (ds);
 264
 265         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 266
 267         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 268                 i->second->get_canvas_group()->raise_to_top();
 269         }
 270 }
 271
 272 void
 273 AudioStreamView::playlist_changed_weak (boost::weak_ptr<Diskstream> ds)
 274 {
 275         boost::shared_ptr<Diskstream> sp (ds.lock());
 276         if (sp) {
 277                 playlist_changed (sp);
 278         }
 279 }
 280
 281 void
 282 AudioStreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 283 {
 284         ENSURE_GUI_THREAD (*this, &AudioStreamView::playlist_changed_weak, boost::weak_ptr<Diskstream> (ds));
 285
 286         StreamView::playlist_changed(ds);
 287
 288         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 289         if (apl) {
 290                 playlist_connections.push_back (apl->NewCrossfade.connect (
 291                                 sigc::mem_fun (*this, &AudioStreamView::add_crossfade)));
 292         }
 293 }
 294
 295 void
 296 AudioStreamView::add_crossfade_weak (boost::weak_ptr<Crossfade> crossfade)
 297 {
 298         boost::shared_ptr<Crossfade> sp (crossfade.lock());
 299
 300         if (!sp) {
 301                 return;
 302         }
 303
 304         add_crossfade (sp);
 305 }
 306
 307 void
 308 AudioStreamView::add_crossfade (boost::shared_ptr<Crossfade> crossfade)
 309 {
 310         AudioRegionView* lview = 0;
 311         AudioRegionView* rview = 0;
 312
 313         /* we do not allow shared_ptr<T> to be bound to slots */
 314
 315         ENSURE_GUI_THREAD (*this, &AudioStreamView::add_crossfade_weak, boost::weak_ptr<Crossfade> (crossfade));
 316
 317         /* first see if we already have a CrossfadeView for this Crossfade */
 318
 319         CrossfadeViewList::iterator i = crossfade_views.find (crossfade);
 320         if (i != crossfade_views.end()) {
 321                 if (!crossfades_visible) {
 322                         i->second->hide();
 323                 } else {
 324                         i->second->show ();
 325                 }
 326                 i->second->set_valid (true);
 327                 return;
 328         }
 329
 330         /* create a new one */
 331
 332         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 333                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 334
 335                 if (!lview && arv && (arv->region() == crossfade->out())) {
 336                         lview = arv;
 337                 }
 338                 if (!rview && arv && (arv->region() == crossfade->in())) {
 339                         rview = arv;
 340                 }
 341         }
 342
 343         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display (),
 344                                                _trackview,
 345                                                 crossfade,
 346                                                _samples_per_unit,
 347                                                region_color,
 348                                                *lview, *rview);
 349         cv->set_valid (true);
 350         crossfade->Invalidated.connect (sigc::mem_fun (*this, &AudioStreamView::remove_crossfade));
 351         crossfade_views[cv->crossfade] = cv;
 352         if (!_trackview.session().config.get_xfades_visible() || !crossfades_visible) {
 353                 cv->hide ();
 354         }
 355
 356         update_content_height (cv);
 357 }
 358
 359 void
 360 AudioStreamView::remove_crossfade (boost::shared_ptr<Region> r)
 361 {
 362         ENSURE_GUI_THREAD (*this, &AudioStreamView::remove_crossfade, r)
 363
 364         boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
 365
 366         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 367                 if (i->second->crossfade == xfade) {
 368                         delete i->second;
 369                         crossfade_views.erase (i);
 370                         break;
 371                 }
 372         }
 373 }
 374
 375 void
 376 AudioStreamView::redisplay_diskstream ()
 377 {
 378         list<RegionView *>::iterator i;
 379         CrossfadeViewList::iterator xi, tmpx;
 380
 381         // Flag region views as invalid and disable drawing
 382         for (i = region_views.begin(); i != region_views.end(); ++i) {
 383                 (*i)->set_valid (false);
 384                 (*i)->enable_display (false);
 385         }
 386
 387         // Flag crossfade views as invalid
 388         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 389                 xi->second->set_valid (false);
 390                 if (xi->second->visible()) {
 391                         xi->second->show ();
 392                 }
 393         }
 394
 395         // Add and display region and crossfade views, and flag them as valid
 396
 397         if (_trackview.is_audio_track()) {
 398                 _trackview.get_diskstream()->playlist()->foreach_region(
 399                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 400                         );
 401
 402                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(
 403                                 _trackview.get_diskstream()->playlist()
 404                         );
 405
 406                 if (apl) {
 407                         apl->foreach_crossfade (sigc::mem_fun (*this, &AudioStreamView::add_crossfade));
 408                 }
 409         }
 410
 411         // Remove invalid crossfade views
 412         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 413                 tmpx = xi;
 414                 tmpx++;
 415
 416                 if (!xi->second->valid()) {
 417                         delete xi->second;
 418                         crossfade_views.erase (xi);
 419                 }
 420
 421                 xi = tmpx;
 422         }
 423
 424         // Stack regions by layer, and remove invalid regions
 425         layer_regions();
 426 }
 427
 428 void
 429 AudioStreamView::set_show_waveforms (bool yn)
 430 {
 431         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 432                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 433                 if (arv) {
 434                         arv->set_waveform_visible (yn);
 435                 }
 436         }
 437 }
 438
 439 void
 440 AudioStreamView::set_waveform_shape (WaveformShape shape)
 441 {
 442         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 443                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 444                 if (arv)
 445                         arv->set_waveform_shape (shape);
 446         }
 447 }
 448
 449 void
 450 AudioStreamView::set_waveform_scale (WaveformScale scale)
 451 {
 452         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 453                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 454                 if (arv) {
 455                         arv->set_waveform_scale (scale);
 456                 }
 457         }
 458 }
 459
 460 void
 461 AudioStreamView::setup_rec_box ()
 462 {
 463         //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
 464
 465         if (_trackview.session().transport_rolling()) {
 466
 467                 // cerr << "\trolling\n";
 468
 469                 if (!rec_active &&
 470                     _trackview.session().record_status() == Session::Recording &&
 471                     _trackview.get_diskstream()->record_enabled()) {
 472                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 473
 474                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 475
 476                                 SourceList sources;
 477
 478                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin();
 479                                                 prc != rec_data_ready_connections.end(); ++prc) {
 480                                         (*prc).disconnect();
 481                                 }
 482                                 rec_data_ready_connections.clear();
 483
 484                                 boost::shared_ptr<AudioDiskstream> ads = _trackview.audio_track()->audio_diskstream();
 485
 486                                 for (uint32_t n=0; n < ads->n_channels().n_audio(); ++n) {
 487                                         boost::shared_ptr<AudioFileSource> src = ads->write_source (n);
 488                                         if (src) {
 489                                                 sources.push_back (src);
 490
 491                                                 rec_data_ready_connections.push_back (src->PeakRangeReady.connect (sigc::bind
 492                                                         (sigc::mem_fun (*this, &AudioStreamView::rec_peak_range_ready),
 493                                                          boost::weak_ptr<Source>(src))));
 494                                         }
 495                                 }
 496
 497                                 // handle multi
 498
 499                                 nframes_t start = 0;
 500                                 if (rec_regions.size() > 0) {
 501                                         start = rec_regions.back().first->start()
 502                                                         + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 503                                 }
 504
 505                                 boost::shared_ptr<AudioRegion> region (boost::dynamic_pointer_cast<AudioRegion>(
 506                                                 RegionFactory::create (sources, start, 1, "", 0, Region::DefaultFlags, false)));
 507                                 assert(region);
 508                                 region->block_property_changes ();
 509                                 region->set_position (_trackview.session().transport_frame(), this);
 510                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 511                         }
 512
 513                         /* start a new rec box */
 514
 515                         boost::shared_ptr<AudioTrack> at;
 516
 517                         at = _trackview.audio_track(); /* we know what it is already */
 518                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 519                         nframes_t frame_pos = ds->current_capture_start ();
 520                         gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
 521                         gdouble xend;
 522                         uint32_t fill_color;
 523
 524                         switch (_trackview.audio_track()->mode()) {
 525                         case Normal:
 526                         case NonLayered:
 527                                 xend = xstart;
 528                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 529                                 break;
 530
 531                         case Destructive:
 532                                 xend = xstart + 2;
 533                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 534                                 /* make the recording rect translucent to allow
 535                                    the user to see the peak data coming in, etc.
 536                                 */
 537                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 538                                 break;
 539                         }
 540
 541                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 542                         rec_rect->property_x1() = xstart;
 543                         rec_rect->property_y1() = 1.0;
 544                         rec_rect->property_x2() = xend;
 545                         rec_rect->property_y2() = child_height ();
 546                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 547                         rec_rect->property_outline_what() = 0x1 | 0x2 | 0x4 | 0x8;
 548                         rec_rect->property_fill_color_rgba() = fill_color;
 549                         rec_rect->lower_to_bottom();
 550
 551                         RecBoxInfo recbox;
 552                         recbox.rectangle = rec_rect;
 553                         recbox.start = _trackview.session().transport_frame();
 554                         recbox.length = 0;
 555
 556                         rec_rects.push_back (recbox);
 557
 558                         screen_update_connection.disconnect();
 559                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
 560                                         sigc::mem_fun (*this, &AudioStreamView::update_rec_box));
 561                         rec_updating = true;
 562                         rec_active = true;
 563
 564                 } else if (rec_active &&
 565                            (_trackview.session().record_status() != Session::Recording ||
 566                             !_trackview.get_diskstream()->record_enabled())) {
 567                         screen_update_connection.disconnect();
 568                         rec_active = false;
 569                         rec_updating = false;
 570                 }
 571
 572         } else {
 573
 574                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 575
 576                 if (!rec_rects.empty() || !rec_regions.empty()) {
 577
 578                         /* disconnect rapid update */
 579                         screen_update_connection.disconnect();
 580
 581                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin();
 582                                         prc != rec_data_ready_connections.end(); ++prc) {
 583                                 (*prc).disconnect();
 584                         }
 585                         rec_data_ready_connections.clear();
 586
 587                         rec_updating = false;
 588                         rec_active = false;
 589
 590                         /* remove temp regions */
 591
 592                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 593                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 594
 595                                 tmp = iter;
 596                                 ++tmp;
 597
 598                                 (*iter).first->drop_references ();
 599
 600                                 iter = tmp;
 601                         }
 602
 603                         rec_regions.clear();
 604
 605                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 606
 607                         /* transport stopped, clear boxes */
 608                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 609                                 RecBoxInfo &rect = (*iter);
 610                                 delete rect.rectangle;
 611                         }
 612
 613                         rec_rects.clear();
 614
 615                 }
 616         }
 617 }
 618
 619 void
 620 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 621 {
 622         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 623                 (i->second->*pmf) ();
 624         }
 625 }
 626
 627 void
 628 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 629 {
 630         ENSURE_GUI_THREAD (*this, &AudioStreamView::rec_peak_range_ready, start, cnt, weak_src)
 631
 632         boost::shared_ptr<Source> src (weak_src.lock());
 633
 634         if (!src) {
 635                 return;
 636         }
 637
 638         // this is called from the peak building thread
 639
 640         if (rec_data_ready_map.size() == 0 || start + cnt > last_rec_data_frame) {
 641                 last_rec_data_frame = start + cnt;
 642         }
 643
 644         rec_data_ready_map[src] = true;
 645
 646         if (rec_data_ready_map.size() == _trackview.get_diskstream()->n_channels().n_audio()) {
 647                 this->update_rec_regions ();
 648                 rec_data_ready_map.clear();
 649         }
 650 }
 651
 652 void
 653 AudioStreamView::update_rec_regions ()
 654 {
 655         if (use_rec_regions) {
 656                 uint32_t n = 0;
 657
 658                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin();
 659                                 iter != rec_regions.end(); n++) {
 660
 661                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
 662                         ++tmp;
 663
 664                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 665                                 /* rect already hidden, this region is done */
 666                                 iter = tmp;
 667                                 continue;
 668                         }
 669
 670                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(iter->first);
 671                         if (!region) {
 672                                 iter = tmp;
 673                                 continue;
 674                         }
 675
 676                         nframes_t origlen = region->length();
 677
 678                         if (region == rec_regions.back().first && rec_active) {
 679
 680                                 if (last_rec_data_frame > region->start()) {
 681
 682                                         nframes_t nlen = last_rec_data_frame - region->start();
 683
 684                                         if (nlen != region->length()) {
 685
 686                                                 region->freeze ();
 687                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 688                                                 region->set_length (nlen, this);
 689                                                 region->thaw ("updated");
 690
 691                                                 if (origlen == 1) {
 692                                                         /* our special initial length */
 693                                                         add_region_view_internal (region, false, true);
 694                                                 }
 695
 696                                                 /* also update rect */
 697                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 698                                                 gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
 699                                                 rect->property_x2() = xend;
 700                                         }
 701                                 }
 702
 703                         } else {
 704
 705                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 706
 707                                 if (nlen != region->length()) {
 708
 709                                         if (region->source_length(0) >= region->start() + nlen) {
 710
 711                                                 region->freeze ();
 712                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 713                                                 region->set_length (nlen, this);
 714                                                 region->thaw ("updated");
 715
 716                                                 if (origlen == 1) {
 717                                                         /* our special initial length */
 718                                                         add_region_view_internal (region, false, true);
 719                                                 }
 720
 721                                                 /* also hide rect */
 722                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 723                                                 rect->hide();
 724
 725                                         }
 726                                 }
 727                         }
 728
 729                         iter = tmp;
 730                 }
 731         }
 732 }
 733
 734 void
 735 AudioStreamView::show_all_fades ()
 736 {
 737         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 738                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 739                 if (arv) {
 740                         arv->set_fade_visibility (true);
 741                 }
 742         }
 743 }
 744
 745 void
 746 AudioStreamView::hide_all_fades ()
 747 {
 748         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 749                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 750                 if (arv) {
 751                         arv->set_fade_visibility (false);
 752                 }
 753         }
 754 }
 755
 756 void
 757 AudioStreamView::show_all_xfades ()
 758 {
 759         foreach_crossfadeview (&CrossfadeView::show);
 760         crossfades_visible = true;
 761 }
 762
 763 void
 764 AudioStreamView::hide_all_xfades ()
 765 {
 766         foreach_crossfadeview (&CrossfadeView::hide);
 767         crossfades_visible = false;
 768 }
 769
 770 void
 771 AudioStreamView::hide_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())) {
 775                         i->second->fake_hide ();
 776                 }
 777         }
 778 }
 779
 780 void
 781 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 782 {
 783         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 784                 if (i->second->crossfade->involves (rv.audio_region()) && i->second->visible()) {
 785                         i->second->show ();
 786                 }
 787         }
 788 }
 789
 790 void
 791 AudioStreamView::color_handler ()
 792 {
 793         //case cAudioTrackBase:
 794         if (_trackview.is_track()) {
 795                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 796         }
 797
 798         //case cAudioBusBase:
 799         if (!_trackview.is_track()) {
 800                 if (Profile->get_sae() && _trackview.route()->is_master()) {
 801                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioMasterBusBase.get();
 802                 } else {
 803                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 804                 }
 805         }
 806 }
 807
 808 void
 809 AudioStreamView::update_contents_height ()
 810 {
 811         StreamView::update_contents_height ();
 812
 813         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 814                 update_content_height (i->second);
 815         }
 816 }
 817
 818 void
 819 AudioStreamView::update_content_height (CrossfadeView* cv)
 820 {
 821         cv->show ();
 822
 823         if (_layer_display == Overlaid) {
 824
 825                 cv->set_y (0);
 826                 cv->set_height (height);
 827
 828         } else {
 829
 830                 layer_t const inl = cv->crossfade->in()->layer ();
 831                 layer_t const outl = cv->crossfade->out()->layer ();
 832
 833                 layer_t const high = max (inl, outl);
 834                 layer_t const low = min (inl, outl);
 835
 836                 const double h = child_height ();
 837
 838                 cv->set_y ((_layers - high - 1) * h);
 839                 cv->set_height ((high - low + 1) * h);
 840
 841         }
 842 }
 843
 844 void
 845 AudioStreamView::parameter_changed (string const & p)
 846 {
 847         if (p == "show-waveforms") {
 848                 set_show_waveforms (Config->get_show_waveforms ());
 849         } else if (p == "waveform-scale") {
 850                 set_waveform_scale (Config->get_waveform_scale ());
 851         } else if (p == "waveform-shape") {
 852                 set_waveform_shape (Config->get_waveform_shape ());
 853         }
 854 }