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 "pbd/stacktrace.h"
  28
  29 #include "ardour/audioplaylist.h"
  30 #include "ardour/audioregion.h"
  31 #include "ardour/audiofilesource.h"
  32 #include "ardour/audio_diskstream.h"
  33 #include "ardour/audio_track.h"
  34 #include "ardour/source.h"
  35 #include "ardour/region_factory.h"
  36 #include "ardour/profile.h"
  37 #include "ardour/rc_configuration.h"
  38 #include "ardour/session.h"
  39
  40 #include "audio_streamview.h"
  41 #include "audio_region_view.h"
  42 #include "tape_region_view.h"
  43 #include "audio_time_axis.h"
  44 #include "canvas-waveview.h"
  45 #include "canvas-simplerect.h"
  46 #include "region_selection.h"
  47 #include "selection.h"
  48 #include "public_editor.h"
  49 #include "ardour_ui.h"
  50 #include "crossfade_view.h"
  51 #include "rgb_macros.h"
  52 #include "gui_thread.h"
  53 #include "utils.h"
  54
  55 #include "i18n.h"
  56
  57 using namespace std;
  58 using namespace ARDOUR;
  59 using namespace PBD;
  60 using namespace Editing;
  61
  62 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  63         : StreamView (tv)
  64 {
  65         crossfades_visible = true;
  66         color_handler ();
  67         _amplitude_above_axis = 1.0;
  68
  69         use_rec_regions = tv.editor().show_waveforms_recording ();
  70
  71         Config->ParameterChanged.connect (*this, ui_bind (&AudioStreamView::parameter_changed, this, _1), gui_context());
  72 }
  73
  74 AudioStreamView::~AudioStreamView ()
  75 {
  76 }
  77
  78 int
  79 AudioStreamView::set_samples_per_unit (gdouble spp)
  80 {
  81         StreamView::set_samples_per_unit(spp);
  82
  83         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
  84                 xi->second->set_samples_per_unit (spp);
  85         }
  86
  87         return 0;
  88 }
  89
  90 int
  91 AudioStreamView::set_amplitude_above_axis (gdouble app)
  92 {
  93         RegionViewList::iterator i;
  94
  95         if (app < 1.0) {
  96                 return -1;
  97         }
  98
  99         _amplitude_above_axis = app;
 100
 101         for (i = region_views.begin(); i != region_views.end(); ++i) {
 102                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 103                 if (arv)
 104                         arv->set_amplitude_above_axis (app);
 105         }
 106
 107         return 0;
 108 }
 109
 110 RegionView*
 111 AudioStreamView::create_region_view (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 112 {
 113         AudioRegionView *region_view = 0;
 114         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 115
 116         if (region == 0) {
 117                 return 0;
 118         }
 119
 120         switch (_trackview.audio_track()->mode()) {
 121
 122         case NonLayered:
 123         case Normal:
 124                 if (recording) {
 125                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 126                                         _samples_per_unit, region_color, recording, TimeAxisViewItem::Visibility(
 127                                                         TimeAxisViewItem::ShowFrame | TimeAxisViewItem::HideFrameRight));
 128                 } else {
 129                         region_view = new AudioRegionView (canvas_group, _trackview, region,
 130                                         _samples_per_unit, region_color);
 131                 }
 132                 break;
 133         case Destructive:
 134                 region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
 135                                 _samples_per_unit, region_color);
 136                 break;
 137         default:
 138                 fatal << string_compose (_("programming error: %1"), "illegal track mode in ::add_region_view_internal") << endmsg;
 139                 /*NOTREACHED*/
 140
 141         }
 142
 143         region_view->init (region_color, wait_for_waves);
 144         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 145         region_view->set_height (child_height ());
 146
 147         /* if its the special single-sample length that we use for rec-regions, make it
 148            insensitive to events
 149         */
 150
 151         if (region->length() == 1) {
 152                 region_view->set_sensitive (false);
 153         }
 154
 155         region_view->set_waveform_scale (Config->get_waveform_scale ());
 156         region_view->set_waveform_shape (Config->get_waveform_shape ());
 157         region_view->set_waveform_visible (Config->get_show_waveforms ());
 158
 159         return region_view;
 160 }
 161
 162 RegionView*
 163 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves, bool recording)
 164 {
 165         RegionView *region_view = create_region_view (r, wait_for_waves, recording);
 166         if (region_view == 0) {
 167                 return 0;
 168         }
 169
 170 //      if(!recording){
 171 //              for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 172 //                      if ((*i)->region() == r) {
 173 //                              cerr << "audio_streamview in add_region_view_internal region found" << endl;
 174                                 /* great. we already have a AudioRegionView for this Region. use it again. */
 175
 176 //                              (*i)->set_valid (true);
 177
 178                                 // this might not be necessary
 179 //                              AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 180
 181 //                              if (arv) {
 182 //                                      arv->set_waveform_scale (_waveform_scale);
 183 //                                      arv->set_waveform_shape (_waveform_shape);
 184 //                              }
 185
 186 //                              return NULL;
 187 //                      }
 188 //              }
 189 //      }
 190
 191         region_views.push_front (region_view);
 192
 193         /* catch region going away */
 194
 195         r->DropReferences.connect (*this, boost::bind (&AudioStreamView::remove_region_view, this, boost::weak_ptr<Region> (r)), gui_context());
 196
 197         RegionViewAdded (region_view);
 198
 199         return region_view;
 200 }
 201
 202 void
 203 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 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 << "a region went way, it appears to be ours (" << this << ")\n";
 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_layered (boost::weak_ptr<Diskstream> wds)
 250 {
 251         boost::shared_ptr<Diskstream> ds (wds.lock());
 252
 253         if (!ds) {
 254                 return;
 255         }
 256
 257         cerr << "AS, call SV::modified @ " << get_microseconds() << endl;
 258
 259         StreamView::playlist_layered (wds);
 260
 261         cerr << "AS, done with SV::modified @ " << get_microseconds() << endl;
 262
 263         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 264
 265         cerr << "AS, raise xfades @ " << get_microseconds() << endl;
 266         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 267                 i->second->get_canvas_group()->raise_to_top();
 268         }
 269         cerr << "AS, done with xfades @ " << get_microseconds() << endl;
 270 }
 271
 272 void
 273 AudioStreamView::playlist_switched (boost::weak_ptr<Diskstream> wds)
 274 {
 275         boost::shared_ptr<Diskstream> ds (wds.lock());
 276
 277         if (!ds) {
 278                 return;
 279         }
 280
 281         playlist_connections.drop_connections ();
 282
 283         StreamView::playlist_switched (ds);
 284
 285         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 286
 287         if (apl) {
 288                 apl->NewCrossfade.connect (playlist_connections, ui_bind (&AudioStreamView::add_crossfade, this, _1), gui_context());
 289         }
 290 }
 291
 292 void
 293 AudioStreamView::add_crossfade (boost::weak_ptr<Crossfade> wc)
 294 {
 295         boost::shared_ptr<Crossfade> crossfade (wc.lock());
 296
 297         if (!crossfade) {
 298                 return;
 299         }
 300
 301         AudioRegionView* lview = 0;
 302         AudioRegionView* rview = 0;
 303
 304         /* first see if we already have a CrossfadeView for this Crossfade */
 305
 306         CrossfadeViewList::iterator i = crossfade_views.find (crossfade);
 307         if (i != crossfade_views.end()) {
 308                 if (!crossfades_visible) {
 309                         i->second->hide();
 310                 } else {
 311                         i->second->show ();
 312                 }
 313                 i->second->set_valid (true);
 314                 return;
 315         }
 316
 317         /* create a new one */
 318
 319         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 320                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 321
 322                 if (!lview && arv && (arv->region() == crossfade->out())) {
 323                         lview = arv;
 324                 }
 325                 if (!rview && arv && (arv->region() == crossfade->in())) {
 326                         rview = arv;
 327                 }
 328         }
 329
 330         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display (),
 331                                                _trackview,
 332                                                 crossfade,
 333                                                _samples_per_unit,
 334                                                region_color,
 335                                                *lview, *rview);
 336         cv->set_valid (true);
 337         crossfade->Invalidated.connect (*this, ui_bind (&AudioStreamView::remove_crossfade, this, _1), gui_context());
 338         crossfade_views[cv->crossfade] = cv;
 339         if (!_trackview.session()->config.get_xfades_visible() || !crossfades_visible) {
 340                 cv->hide ();
 341         }
 342
 343         update_content_height (cv);
 344 }
 345
 346 void
 347 AudioStreamView::remove_crossfade (boost::shared_ptr<Region> r)
 348 {
 349         ENSURE_GUI_THREAD (*this, &AudioStreamView::remove_crossfade, r)
 350
 351         boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
 352
 353         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 354                 if (i->second->crossfade == xfade) {
 355                         delete i->second;
 356                         crossfade_views.erase (i);
 357                         break;
 358                 }
 359         }
 360 }
 361
 362 void
 363 AudioStreamView::redisplay_diskstream ()
 364 {
 365         list<RegionView *>::iterator i;
 366         CrossfadeViewList::iterator xi, tmpx;
 367
 368         // Flag region views as invalid and disable drawing
 369         for (i = region_views.begin(); i != region_views.end(); ++i) {
 370                 (*i)->set_valid (false);
 371                 (*i)->enable_display (false);
 372         }
 373
 374         // Flag crossfade views as invalid
 375         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 376                 xi->second->set_valid (false);
 377                 if (xi->second->visible()) {
 378                         xi->second->show ();
 379                 }
 380         }
 381
 382         // Add and display region and crossfade views, and flag them as valid
 383
 384         if (_trackview.is_audio_track()) {
 385                 _trackview.get_diskstream()->playlist()->foreach_region(
 386                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 387                         );
 388
 389                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(
 390                                 _trackview.get_diskstream()->playlist()
 391                         );
 392
 393                 if (apl) {
 394                         apl->foreach_crossfade (sigc::mem_fun (*this, &AudioStreamView::add_crossfade));
 395                 }
 396         }
 397
 398         // Remove invalid crossfade views
 399         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 400                 tmpx = xi;
 401                 tmpx++;
 402
 403                 if (!xi->second->valid()) {
 404                         delete xi->second;
 405                         crossfade_views.erase (xi);
 406                 }
 407
 408                 xi = tmpx;
 409         }
 410
 411         // Stack regions by layer, and remove invalid regions
 412         layer_regions();
 413 }
 414
 415 void
 416 AudioStreamView::set_show_waveforms (bool yn)
 417 {
 418         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 419                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 420                 if (arv) {
 421                         arv->set_waveform_visible (yn);
 422                 }
 423         }
 424 }
 425
 426 void
 427 AudioStreamView::set_waveform_shape (WaveformShape shape)
 428 {
 429         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 430                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 431                 if (arv)
 432                         arv->set_waveform_shape (shape);
 433         }
 434 }
 435
 436 void
 437 AudioStreamView::set_waveform_scale (WaveformScale scale)
 438 {
 439         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 440                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 441                 if (arv) {
 442                         arv->set_waveform_scale (scale);
 443                 }
 444         }
 445 }
 446
 447 void
 448 AudioStreamView::setup_rec_box ()
 449 {
 450         //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
 451
 452         if (_trackview.session()->transport_rolling()) {
 453
 454                 // cerr << "\trolling\n";
 455
 456                 if (!rec_active &&
 457                     _trackview.session()->record_status() == Session::Recording &&
 458                     _trackview.get_diskstream()->record_enabled()) {
 459                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 460
 461                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 462
 463                                 SourceList sources;
 464
 465                                 rec_data_ready_connections.drop_connections ();
 466                                 boost::shared_ptr<AudioDiskstream> ads = _trackview.audio_track()->audio_diskstream();
 467
 468                                 for (uint32_t n=0; n < ads->n_channels().n_audio(); ++n) {
 469                                         boost::shared_ptr<AudioFileSource> src = ads->write_source (n);
 470                                         if (src) {
 471                                                 sources.push_back (src);
 472                                                 src->PeakRangeReady.connect (rec_data_ready_connections,
 473                                                                              ui_bind (&AudioStreamView::rec_peak_range_ready, this, _1, _2, boost::weak_ptr<Source>(src)),
 474                                                                              gui_context());
 475                                         }
 476                                 }
 477
 478                                 // handle multi
 479
 480                                 nframes_t start = 0;
 481                                 if (rec_regions.size() > 0) {
 482                                         start = rec_regions.back().first->start()
 483                                                         + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 484                                 }
 485
 486                                 PropertyList plist;
 487
 488                                 plist.add (Properties::start, start);
 489                                 plist.add (Properties::length, 1);
 490                                 plist.add (Properties::name, string());
 491                                 plist.add (Properties::layer, 0);
 492
 493                                 boost::shared_ptr<AudioRegion> region (
 494                                         boost::dynamic_pointer_cast<AudioRegion>(RegionFactory::create (sources, plist, false)));
 495
 496                                 assert(region);
 497                                 region->block_property_changes ();
 498                                 region->set_position (_trackview.session()->transport_frame(), this);
 499                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 500                         }
 501
 502                         /* start a new rec box */
 503
 504                         boost::shared_ptr<AudioTrack> at;
 505
 506                         at = _trackview.audio_track(); /* we know what it is already */
 507                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 508                         nframes_t frame_pos = ds->current_capture_start ();
 509                         gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
 510                         gdouble xend;
 511                         uint32_t fill_color;
 512
 513                         switch (_trackview.audio_track()->mode()) {
 514                         case Normal:
 515                         case NonLayered:
 516                                 xend = xstart;
 517                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 518                                 break;
 519
 520                         case Destructive:
 521                                 xend = xstart + 2;
 522                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 523                                 /* make the recording rect translucent to allow
 524                                    the user to see the peak data coming in, etc.
 525                                 */
 526                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 527                                 break;
 528                         }
 529
 530                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 531                         rec_rect->property_x1() = xstart;
 532                         rec_rect->property_y1() = 1.0;
 533                         rec_rect->property_x2() = xend;
 534                         rec_rect->property_y2() = child_height ();
 535                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 536                         rec_rect->property_outline_what() = 0x1 | 0x2 | 0x4 | 0x8;
 537                         rec_rect->property_fill_color_rgba() = fill_color;
 538                         rec_rect->lower_to_bottom();
 539
 540                         RecBoxInfo recbox;
 541                         recbox.rectangle = rec_rect;
 542                         recbox.start = _trackview.session()->transport_frame();
 543                         recbox.length = 0;
 544
 545                         rec_rects.push_back (recbox);
 546
 547                         screen_update_connection.disconnect();
 548                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
 549                                         sigc::mem_fun (*this, &AudioStreamView::update_rec_box));
 550                         rec_updating = true;
 551                         rec_active = true;
 552
 553                 } else if (rec_active &&
 554                            (_trackview.session()->record_status() != Session::Recording ||
 555                             !_trackview.get_diskstream()->record_enabled())) {
 556                         screen_update_connection.disconnect();
 557                         rec_active = false;
 558                         rec_updating = false;
 559                 }
 560
 561         } else {
 562
 563                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 564
 565                 if (!rec_rects.empty() || !rec_regions.empty()) {
 566
 567                         /* disconnect rapid update */
 568                         screen_update_connection.disconnect();
 569                         rec_data_ready_connections.drop_connections ();
 570                         rec_updating = false;
 571                         rec_active = false;
 572
 573                         /* remove temp regions */
 574
 575                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 576                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 577
 578                                 tmp = iter;
 579                                 ++tmp;
 580
 581                                 (*iter).first->drop_references ();
 582
 583                                 iter = tmp;
 584                         }
 585
 586                         rec_regions.clear();
 587
 588                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 589
 590                         /* transport stopped, clear boxes */
 591                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 592                                 RecBoxInfo &rect = (*iter);
 593                                 delete rect.rectangle;
 594                         }
 595
 596                         rec_rects.clear();
 597
 598                 }
 599         }
 600 }
 601
 602 void
 603 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 604 {
 605         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 606                 (i->second->*pmf) ();
 607         }
 608 }
 609
 610 void
 611 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 612 {
 613         ENSURE_GUI_THREAD (*this, &AudioStreamView::rec_peak_range_ready, start, cnt, weak_src)
 614
 615         boost::shared_ptr<Source> src (weak_src.lock());
 616
 617         if (!src) {
 618                 return;
 619         }
 620
 621         // this is called from the peak building thread
 622
 623         if (rec_data_ready_map.size() == 0 || start + cnt > last_rec_data_frame) {
 624                 last_rec_data_frame = start + cnt;
 625         }
 626
 627         rec_data_ready_map[src] = true;
 628
 629         if (rec_data_ready_map.size() == _trackview.get_diskstream()->n_channels().n_audio()) {
 630                 this->update_rec_regions ();
 631                 rec_data_ready_map.clear();
 632         }
 633 }
 634
 635 void
 636 AudioStreamView::update_rec_regions ()
 637 {
 638         if (use_rec_regions) {
 639                 uint32_t n = 0;
 640
 641                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin();
 642                                 iter != rec_regions.end(); n++) {
 643
 644                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
 645                         ++tmp;
 646
 647                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 648                                 /* rect already hidden, this region is done */
 649                                 iter = tmp;
 650                                 continue;
 651                         }
 652
 653                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(iter->first);
 654                         if (!region) {
 655                                 iter = tmp;
 656                                 continue;
 657                         }
 658
 659                         nframes_t origlen = region->length();
 660
 661                         if (region == rec_regions.back().first && rec_active) {
 662
 663                                 if (last_rec_data_frame > region->start()) {
 664
 665                                         nframes_t nlen = last_rec_data_frame - region->start();
 666
 667                                         if (nlen != region->length()) {
 668
 669                                                 region->freeze ();
 670                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 671                                                 region->set_length (nlen, this);
 672                                                 region->thaw ();
 673
 674                                                 if (origlen == 1) {
 675                                                         /* our special initial length */
 676                                                         add_region_view_internal (region, false, true);
 677                                                 }
 678
 679                                                 /* also update rect */
 680                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 681                                                 gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
 682                                                 rect->property_x2() = xend;
 683                                         }
 684                                 }
 685
 686                         } else {
 687
 688                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 689
 690                                 if (nlen != region->length()) {
 691
 692                                         if (region->source_length(0) >= region->start() + nlen) {
 693
 694                                                 region->freeze ();
 695                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 696                                                 region->set_length (nlen, this);
 697                                                 region->thaw ();
 698
 699                                                 if (origlen == 1) {
 700                                                         /* our special initial length */
 701                                                         add_region_view_internal (region, false, true);
 702                                                 }
 703
 704                                                 /* also hide rect */
 705                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 706                                                 rect->hide();
 707
 708                                         }
 709                                 }
 710                         }
 711
 712                         iter = tmp;
 713                 }
 714         }
 715 }
 716
 717 void
 718 AudioStreamView::show_all_fades ()
 719 {
 720         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 721                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 722                 if (arv) {
 723                         arv->set_fade_visibility (true);
 724                 }
 725         }
 726 }
 727
 728 void
 729 AudioStreamView::hide_all_fades ()
 730 {
 731         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 732                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 733                 if (arv) {
 734                         arv->set_fade_visibility (false);
 735                 }
 736         }
 737 }
 738
 739 void
 740 AudioStreamView::show_all_xfades ()
 741 {
 742         foreach_crossfadeview (&CrossfadeView::show);
 743         crossfades_visible = true;
 744 }
 745
 746 void
 747 AudioStreamView::hide_all_xfades ()
 748 {
 749         foreach_crossfadeview (&CrossfadeView::hide);
 750         crossfades_visible = false;
 751 }
 752
 753 void
 754 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 755 {
 756         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 757                 if (i->second->crossfade->involves (rv.audio_region())) {
 758                         i->second->fake_hide ();
 759                 }
 760         }
 761 }
 762
 763 void
 764 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 765 {
 766         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 767                 if (i->second->crossfade->involves (rv.audio_region()) && i->second->visible()) {
 768                         i->second->show ();
 769                 }
 770         }
 771 }
 772
 773 void
 774 AudioStreamView::color_handler ()
 775 {
 776         //case cAudioTrackBase:
 777         if (_trackview.is_track()) {
 778                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 779         }
 780
 781         //case cAudioBusBase:
 782         if (!_trackview.is_track()) {
 783                 if (Profile->get_sae() && _trackview.route()->is_master()) {
 784                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioMasterBusBase.get();
 785                 } else {
 786                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 787                 }
 788         }
 789 }
 790
 791 void
 792 AudioStreamView::update_contents_height ()
 793 {
 794         StreamView::update_contents_height ();
 795
 796         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 797                 update_content_height (i->second);
 798         }
 799 }
 800
 801 void
 802 AudioStreamView::update_content_height (CrossfadeView* cv)
 803 {
 804         cv->show ();
 805
 806         if (_layer_display == Overlaid) {
 807
 808                 cv->set_y (0);
 809                 cv->set_height (height);
 810
 811         } else {
 812
 813                 layer_t const inl = cv->crossfade->in()->layer ();
 814                 layer_t const outl = cv->crossfade->out()->layer ();
 815
 816                 layer_t const high = max (inl, outl);
 817                 layer_t const low = min (inl, outl);
 818
 819                 const double h = child_height ();
 820
 821                 cv->set_y ((_layers - high - 1) * h);
 822                 cv->set_height ((high - low + 1) * h);
 823
 824         }
 825 }
 826
 827 void
 828 AudioStreamView::parameter_changed (string const & p)
 829 {
 830         if (p == "show-waveforms") {
 831                 set_show_waveforms (Config->get_show_waveforms ());
 832         } else if (p == "waveform-scale") {
 833                 set_waveform_scale (Config->get_waveform_scale ());
 834         } else if (p == "waveform-shape") {
 835                 set_waveform_shape (Config->get_waveform_shape ());
 836         }
 837 }