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) {
 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) {
 348                 cv->hide ();
 349         }
 350
 351         update_content_height (cv);
 352 }
 353
 354 void
 355 AudioStreamView::remove_crossfade (boost::shared_ptr<Region> r)
 356 {
 357         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_crossfade), r));
 358
 359         boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
 360
 361         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 362                 if (i->second->crossfade == xfade) {
 363                         delete i->second;
 364                         crossfade_views.erase (i);
 365                         break;
 366                 }
 367         }
 368 }
 369
 370 void
 371 AudioStreamView::redisplay_diskstream ()
 372 {
 373         list<RegionView *>::iterator i;
 374         CrossfadeViewList::iterator xi, tmpx;
 375
 376         // Flag region views as invalid and disable drawing
 377         for (i = region_views.begin(); i != region_views.end(); ++i) {
 378                 (*i)->set_valid (false);
 379                 (*i)->enable_display (false);
 380         }
 381
 382         // Flag crossfade views as invalid
 383         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 384                 xi->second->set_valid (false);
 385                 if (xi->second->visible()) {
 386                         xi->second->show ();
 387                 }
 388         }
 389
 390         // Add and display region and crossfade views, and flag them as valid
 391
 392         if (_trackview.is_audio_track()) {
 393                 _trackview.get_diskstream()->playlist()->foreach_region(
 394                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 395                         );
 396
 397                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(
 398                                 _trackview.get_diskstream()->playlist()
 399                         );
 400
 401                 if (apl) {
 402                         apl->foreach_crossfade (sigc::mem_fun (*this, &AudioStreamView::add_crossfade));
 403                 }
 404         }
 405
 406         // Remove invalid crossfade views
 407         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 408                 tmpx = xi;
 409                 tmpx++;
 410
 411                 if (!xi->second->valid()) {
 412                         delete xi->second;
 413                         crossfade_views.erase (xi);
 414                 }
 415
 416                 xi = tmpx;
 417         }
 418
 419         // Stack regions by layer, and remove invalid regions
 420         layer_regions();
 421 }
 422
 423 void
 424 AudioStreamView::set_show_waveforms (bool yn)
 425 {
 426         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 427                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 428                 if (arv) {
 429                         arv->set_waveform_visible (yn);
 430                 }
 431         }
 432 }
 433
 434 void
 435 AudioStreamView::set_waveform_shape (WaveformShape shape)
 436 {
 437         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 438                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 439                 if (arv)
 440                         arv->set_waveform_shape (shape);
 441         }
 442 }
 443
 444 void
 445 AudioStreamView::set_waveform_scale (WaveformScale scale)
 446 {
 447         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 448                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 449                 if (arv) {
 450                         arv->set_waveform_scale (scale);
 451                 }
 452         }
 453 }
 454
 455 void
 456 AudioStreamView::setup_rec_box ()
 457 {
 458         //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
 459
 460         if (_trackview.session().transport_rolling()) {
 461
 462                 // cerr << "\trolling\n";
 463
 464                 if (!rec_active &&
 465                     _trackview.session().record_status() == Session::Recording &&
 466                     _trackview.get_diskstream()->record_enabled()) {
 467                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 468
 469                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 470
 471                                 SourceList sources;
 472
 473                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin();
 474                                                 prc != rec_data_ready_connections.end(); ++prc) {
 475                                         (*prc).disconnect();
 476                                 }
 477                                 rec_data_ready_connections.clear();
 478
 479                                 boost::shared_ptr<AudioDiskstream> ads = _trackview.audio_track()->audio_diskstream();
 480
 481                                 for (uint32_t n=0; n < ads->n_channels().n_audio(); ++n) {
 482                                         boost::shared_ptr<AudioFileSource> src = ads->write_source (n);
 483                                         if (src) {
 484                                                 sources.push_back (src);
 485
 486                                                 rec_data_ready_connections.push_back (src->PeakRangeReady.connect (bind
 487                                                         (mem_fun (*this, &AudioStreamView::rec_peak_range_ready),
 488                                                          boost::weak_ptr<Source>(src))));
 489                                         }
 490                                 }
 491
 492                                 // handle multi
 493
 494                                 nframes_t start = 0;
 495                                 if (rec_regions.size() > 0) {
 496                                         start = rec_regions.back().first->start()
 497                                                         + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 498                                 }
 499
 500                                 boost::shared_ptr<AudioRegion> region (boost::dynamic_pointer_cast<AudioRegion>(
 501                                                 RegionFactory::create (sources, start, 1, "", 0, Region::DefaultFlags, false)));
 502                                 assert(region);
 503                                 region->block_property_changes ();
 504                                 region->set_position (_trackview.session().transport_frame(), this);
 505                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 506                         }
 507
 508                         /* start a new rec box */
 509
 510                         boost::shared_ptr<AudioTrack> at;
 511
 512                         at = _trackview.audio_track(); /* we know what it is already */
 513                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 514                         nframes_t frame_pos = ds->current_capture_start ();
 515                         gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
 516                         gdouble xend;
 517                         uint32_t fill_color;
 518
 519                         switch (_trackview.audio_track()->mode()) {
 520                         case Normal:
 521                         case NonLayered:
 522                                 xend = xstart;
 523                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 524                                 break;
 525
 526                         case Destructive:
 527                                 xend = xstart + 2;
 528                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 529                                 /* make the recording rect translucent to allow
 530                                    the user to see the peak data coming in, etc.
 531                                 */
 532                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 533                                 break;
 534                         }
 535
 536                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 537                         rec_rect->property_x1() = xstart;
 538                         rec_rect->property_y1() = 1.0;
 539                         rec_rect->property_x2() = xend;
 540                         rec_rect->property_y2() = child_height ();
 541                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 542                         rec_rect->property_outline_what() = 0x1 | 0x2 | 0x4 | 0x8;
 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 (
 555                                         mem_fun (*this, &AudioStreamView::update_rec_box));
 556                         rec_updating = true;
 557                         rec_active = true;
 558
 559                 } else if (rec_active &&
 560                            (_trackview.session().record_status() != Session::Recording ||
 561                             !_trackview.get_diskstream()->record_enabled())) {
 562                         screen_update_connection.disconnect();
 563                         rec_active = false;
 564                         rec_updating = false;
 565                 }
 566
 567         } else {
 568
 569                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 570
 571                 if (!rec_rects.empty() || !rec_regions.empty()) {
 572
 573                         /* disconnect rapid update */
 574                         screen_update_connection.disconnect();
 575
 576                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin();
 577                                         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 (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 618                 (i->second->*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                 uint32_t n = 0;
 652
 653                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin();
 654                                 iter != rec_regions.end(); n++) {
 655
 656                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
 657                         ++tmp;
 658
 659                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 660                                 /* rect already hidden, this region is done */
 661                                 iter = tmp;
 662                                 continue;
 663                         }
 664
 665                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(iter->first);
 666                         if (!region) {
 667                                 iter = tmp;
 668                                 continue;
 669                         }
 670
 671                         nframes_t origlen = region->length();
 672
 673                         if (region == rec_regions.back().first && rec_active) {
 674
 675                                 if (last_rec_data_frame > region->start()) {
 676
 677                                         nframes_t nlen = last_rec_data_frame - region->start();
 678
 679                                         if (nlen != region->length()) {
 680
 681                                                 region->freeze ();
 682                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 683                                                 region->set_length (nlen, this);
 684                                                 region->thaw ("updated");
 685
 686                                                 if (origlen == 1) {
 687                                                         /* our special initial length */
 688                                                         add_region_view_internal (region, false, true);
 689                                                 }
 690
 691                                                 /* also update rect */
 692                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 693                                                 gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
 694                                                 rect->property_x2() = xend;
 695                                         }
 696                                 }
 697
 698                         } else {
 699
 700                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 701
 702                                 if (nlen != region->length()) {
 703
 704                                         if (region->source_length(0) >= region->start() + nlen) {
 705
 706                                                 region->freeze ();
 707                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 708                                                 region->set_length (nlen, this);
 709                                                 region->thaw ("updated");
 710
 711                                                 if (origlen == 1) {
 712                                                         /* our special initial length */
 713                                                         add_region_view_internal (region, false, true);
 714                                                 }
 715
 716                                                 /* also hide rect */
 717                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 718                                                 rect->hide();
 719
 720                                         }
 721                                 }
 722                         }
 723
 724                         iter = tmp;
 725                 }
 726         }
 727 }
 728
 729 void
 730 AudioStreamView::show_all_fades ()
 731 {
 732         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 733                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 734                 if (arv) {
 735                         arv->set_fade_visibility (true);
 736                 }
 737         }
 738 }
 739
 740 void
 741 AudioStreamView::hide_all_fades ()
 742 {
 743         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 744                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 745                 if (arv) {
 746                         arv->set_fade_visibility (false);
 747                 }
 748         }
 749 }
 750
 751 void
 752 AudioStreamView::show_all_xfades ()
 753 {
 754         foreach_crossfadeview (&CrossfadeView::show);
 755         crossfades_visible = true;
 756 }
 757
 758 void
 759 AudioStreamView::hide_all_xfades ()
 760 {
 761         foreach_crossfadeview (&CrossfadeView::hide);
 762         crossfades_visible = false;
 763 }
 764
 765 void
 766 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 767 {
 768         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 769                 if (i->second->crossfade->involves (rv.audio_region())) {
 770                         i->second->fake_hide ();
 771                 }
 772         }
 773 }
 774
 775 void
 776 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 777 {
 778         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 779                 if (i->second->crossfade->involves (rv.audio_region()) && i->second->visible()) {
 780                         i->second->show ();
 781                 }
 782         }
 783 }
 784
 785 void
 786 AudioStreamView::color_handler ()
 787 {
 788         //case cAudioTrackBase:
 789         if (_trackview.is_track()) {
 790                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 791         }
 792
 793         //case cAudioBusBase:
 794         if (!_trackview.is_track()) {
 795                 if (Profile->get_sae() && _trackview.route()->is_master()) {
 796                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioMasterBusBase.get();
 797                 } else {
 798                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 799                 }
 800         }
 801 }
 802
 803 void
 804 AudioStreamView::update_contents_height ()
 805 {
 806         StreamView::update_contents_height ();
 807
 808         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 809                 update_content_height (i->second);
 810         }
 811 }
 812
 813 void
 814 AudioStreamView::update_content_height (CrossfadeView* cv)
 815 {
 816         cv->show ();
 817
 818         if (_layer_display == Overlaid) {
 819
 820                 cv->set_y (0);
 821                 cv->set_height (height);
 822
 823         } else {
 824
 825                 layer_t const inl = cv->crossfade->in()->layer ();
 826                 layer_t const outl = cv->crossfade->out()->layer ();
 827
 828                 layer_t const high = max (inl, outl);
 829                 layer_t const low = min (inl, outl);
 830
 831                 const double h = child_height ();
 832
 833                 cv->set_y ((_layers - high - 1) * h);
 834                 cv->set_height ((high - low + 1) * h);
 835
 836         }
 837 }
 838
 839 void
 840 AudioStreamView::parameter_changed (string const & p)
 841 {
 842         if (p == "show-waveforms") {
 843                 set_show_waveforms (Config->get_show_waveforms ());
 844         } else if (p == "waveform-scale") {
 845                 set_waveform_scale (Config->get_waveform_scale ());
 846         } else if (p == "waveform-shape") {
 847                 set_waveform_shape (Config->get_waveform_shape ());
 848         }
 849 }