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, invalidator (*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, invalidator (*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         if (!_trackview.session()->deletion_in_progress()) {
 214
 215                 for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 216                         CrossfadeViewList::iterator tmp;
 217
 218                         tmp = i;
 219                         ++tmp;
 220
 221                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 222                         if (ar && i->second->crossfade->involves (ar)) {
 223                                 delete i->second;
 224                                 crossfade_views.erase (i);
 225                         }
 226
 227                         i = tmp;
 228                 }
 229         }
 230
 231         StreamView::remove_region_view(r);
 232 }
 233
 234 void
 235 AudioStreamView::undisplay_diskstream ()
 236 {
 237         StreamView::undisplay_diskstream();
 238
 239         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 240                 delete i->second;
 241         }
 242
 243         crossfade_views.clear ();
 244 }
 245
 246 void
 247 AudioStreamView::playlist_layered (boost::weak_ptr<Diskstream> wds)
 248 {
 249         boost::shared_ptr<Diskstream> ds (wds.lock());
 250
 251         if (!ds) {
 252                 return;
 253         }
 254
 255         StreamView::playlist_layered (wds);
 256
 257         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 258
 259         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 260                 i->second->get_canvas_group()->raise_to_top();
 261         }
 262 }
 263
 264 void
 265 AudioStreamView::playlist_switched (boost::weak_ptr<Diskstream> wds)
 266 {
 267         boost::shared_ptr<Diskstream> ds (wds.lock());
 268
 269         if (!ds) {
 270                 return;
 271         }
 272
 273         playlist_connections.drop_connections ();
 274
 275         StreamView::playlist_switched (ds);
 276
 277         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 278
 279         if (apl) {
 280                 apl->NewCrossfade.connect (playlist_connections, invalidator (*this), ui_bind (&AudioStreamView::add_crossfade, this, _1), gui_context());
 281         }
 282 }
 283
 284 void
 285 AudioStreamView::add_crossfade (boost::weak_ptr<Crossfade> wc)
 286 {
 287         boost::shared_ptr<Crossfade> crossfade (wc.lock());
 288
 289         if (!crossfade) {
 290                 return;
 291         }
 292
 293         AudioRegionView* lview = 0;
 294         AudioRegionView* rview = 0;
 295
 296         /* first see if we already have a CrossfadeView for this Crossfade */
 297
 298         CrossfadeViewList::iterator i = crossfade_views.find (crossfade);
 299         if (i != crossfade_views.end()) {
 300                 if (!crossfades_visible) {
 301                         i->second->hide();
 302                 } else {
 303                         i->second->show ();
 304                 }
 305                 i->second->set_valid (true);
 306                 return;
 307         }
 308
 309         /* create a new one */
 310
 311         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 312                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 313
 314                 if (!lview && arv && (arv->region() == crossfade->out())) {
 315                         lview = arv;
 316                 }
 317                 if (!rview && arv && (arv->region() == crossfade->in())) {
 318                         rview = arv;
 319                 }
 320         }
 321
 322         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display (),
 323                                                _trackview,
 324                                                 crossfade,
 325                                                _samples_per_unit,
 326                                                region_color,
 327                                                *lview, *rview);
 328         cv->set_valid (true);
 329         crossfade->Invalidated.connect (*this, invalidator (*this), ui_bind (&AudioStreamView::remove_crossfade, this, _1), gui_context());
 330         crossfade_views[cv->crossfade] = cv;
 331         if (!_trackview.session()->config.get_xfades_visible() || !crossfades_visible) {
 332                 cv->hide ();
 333         }
 334
 335         update_content_height (cv);
 336 }
 337
 338 void
 339 AudioStreamView::remove_crossfade (boost::shared_ptr<Region> r)
 340 {
 341         ENSURE_GUI_THREAD (*this, &AudioStreamView::remove_crossfade, r)
 342
 343         boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
 344
 345         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 346                 if (i->second->crossfade == xfade) {
 347                         delete i->second;
 348                         crossfade_views.erase (i);
 349                         break;
 350                 }
 351         }
 352 }
 353
 354 void
 355 AudioStreamView::redisplay_diskstream ()
 356 {
 357         list<RegionView *>::iterator i;
 358         CrossfadeViewList::iterator xi, tmpx;
 359
 360         // Flag region views as invalid and disable drawing
 361         for (i = region_views.begin(); i != region_views.end(); ++i) {
 362                 (*i)->set_valid (false);
 363                 (*i)->enable_display (false);
 364         }
 365
 366         // Flag crossfade views as invalid
 367         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 368                 xi->second->set_valid (false);
 369                 if (xi->second->visible()) {
 370                         xi->second->show ();
 371                 }
 372         }
 373
 374         // Add and display region and crossfade views, and flag them as valid
 375
 376         if (_trackview.is_audio_track()) {
 377                 _trackview.get_diskstream()->playlist()->foreach_region(
 378                         sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 379                         );
 380
 381                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(
 382                                 _trackview.get_diskstream()->playlist()
 383                         );
 384
 385                 if (apl) {
 386                         apl->foreach_crossfade (sigc::mem_fun (*this, &AudioStreamView::add_crossfade));
 387                 }
 388         }
 389
 390         // Remove invalid crossfade views
 391         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 392                 tmpx = xi;
 393                 tmpx++;
 394
 395                 if (!xi->second->valid()) {
 396                         delete xi->second;
 397                         crossfade_views.erase (xi);
 398                 }
 399
 400                 xi = tmpx;
 401         }
 402
 403         // Stack regions by layer, and remove invalid regions
 404         layer_regions();
 405 }
 406
 407 void
 408 AudioStreamView::set_show_waveforms (bool yn)
 409 {
 410         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 411                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 412                 if (arv) {
 413                         arv->set_waveform_visible (yn);
 414                 }
 415         }
 416 }
 417
 418 void
 419 AudioStreamView::set_waveform_shape (WaveformShape shape)
 420 {
 421         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 422                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 423                 if (arv)
 424                         arv->set_waveform_shape (shape);
 425         }
 426 }
 427
 428 void
 429 AudioStreamView::set_waveform_scale (WaveformScale scale)
 430 {
 431         for (RegionViewList::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_scale (scale);
 435                 }
 436         }
 437 }
 438
 439 void
 440 AudioStreamView::setup_rec_box ()
 441 {
 442         //cerr << _trackview.name() << " streamview SRB region_views.size() = " << region_views.size() << endl;
 443
 444         if (_trackview.session()->transport_rolling()) {
 445
 446                 // cerr << "\trolling\n";
 447
 448                 if (!rec_active &&
 449                     _trackview.session()->record_status() == Session::Recording &&
 450                     _trackview.get_diskstream()->record_enabled()) {
 451                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 452
 453                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 454
 455                                 SourceList sources;
 456
 457                                 rec_data_ready_connections.drop_connections ();
 458                                 boost::shared_ptr<AudioDiskstream> ads = _trackview.audio_track()->audio_diskstream();
 459
 460                                 for (uint32_t n=0; n < ads->n_channels().n_audio(); ++n) {
 461                                         boost::shared_ptr<AudioFileSource> src = ads->write_source (n);
 462                                         if (src) {
 463                                                 sources.push_back (src);
 464                                                 src->PeakRangeReady.connect (rec_data_ready_connections,
 465                                                                              invalidator (*this),
 466                                                                              ui_bind (&AudioStreamView::rec_peak_range_ready, this, _1, _2, boost::weak_ptr<Source>(src)),
 467                                                                              gui_context());
 468                                         }
 469                                 }
 470
 471                                 // handle multi
 472
 473                                 nframes_t start = 0;
 474                                 if (rec_regions.size() > 0) {
 475                                         start = rec_regions.back().first->start()
 476                                                         + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 477                                 }
 478
 479                                 PropertyList plist;
 480
 481                                 plist.add (Properties::start, start);
 482                                 plist.add (Properties::length, 1);
 483                                 plist.add (Properties::name, string());
 484                                 plist.add (Properties::layer, 0);
 485
 486                                 boost::shared_ptr<AudioRegion> region (
 487                                         boost::dynamic_pointer_cast<AudioRegion>(RegionFactory::create (sources, plist, false)));
 488
 489                                 assert(region);
 490                                 region->block_property_changes ();
 491                                 region->set_position (_trackview.session()->transport_frame(), this);
 492                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 493                         }
 494
 495                         /* start a new rec box */
 496
 497                         boost::shared_ptr<AudioTrack> at;
 498
 499                         at = _trackview.audio_track(); /* we know what it is already */
 500                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 501                         nframes_t frame_pos = ds->current_capture_start ();
 502                         gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
 503                         gdouble xend;
 504                         uint32_t fill_color;
 505
 506                         switch (_trackview.audio_track()->mode()) {
 507                         case Normal:
 508                         case NonLayered:
 509                                 xend = xstart;
 510                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 511                                 break;
 512
 513                         case Destructive:
 514                                 xend = xstart + 2;
 515                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 516                                 /* make the recording rect translucent to allow
 517                                    the user to see the peak data coming in, etc.
 518                                 */
 519                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 520                                 break;
 521                         }
 522
 523                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 524                         rec_rect->property_x1() = xstart;
 525                         rec_rect->property_y1() = 1.0;
 526                         rec_rect->property_x2() = xend;
 527                         rec_rect->property_y2() = child_height ();
 528                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_TimeAxisFrame.get();
 529                         rec_rect->property_outline_what() = 0x1 | 0x2 | 0x4 | 0x8;
 530                         rec_rect->property_fill_color_rgba() = fill_color;
 531                         rec_rect->lower_to_bottom();
 532
 533                         RecBoxInfo recbox;
 534                         recbox.rectangle = rec_rect;
 535                         recbox.start = _trackview.session()->transport_frame();
 536                         recbox.length = 0;
 537
 538                         rec_rects.push_back (recbox);
 539
 540                         screen_update_connection.disconnect();
 541                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
 542                                         sigc::mem_fun (*this, &AudioStreamView::update_rec_box));
 543                         rec_updating = true;
 544                         rec_active = true;
 545
 546                 } else if (rec_active &&
 547                            (_trackview.session()->record_status() != Session::Recording ||
 548                             !_trackview.get_diskstream()->record_enabled())) {
 549                         screen_update_connection.disconnect();
 550                         rec_active = false;
 551                         rec_updating = false;
 552                 }
 553
 554         } else {
 555
 556                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 557
 558                 if (!rec_rects.empty() || !rec_regions.empty()) {
 559
 560                         /* disconnect rapid update */
 561                         screen_update_connection.disconnect();
 562                         rec_data_ready_connections.drop_connections ();
 563                         rec_updating = false;
 564                         rec_active = false;
 565
 566                         /* remove temp regions */
 567
 568                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 569                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 570
 571                                 tmp = iter;
 572                                 ++tmp;
 573
 574                                 (*iter).first->drop_references ();
 575
 576                                 iter = tmp;
 577                         }
 578
 579                         rec_regions.clear();
 580
 581                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 582
 583                         /* transport stopped, clear boxes */
 584                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 585                                 RecBoxInfo &rect = (*iter);
 586                                 delete rect.rectangle;
 587                         }
 588
 589                         rec_rects.clear();
 590
 591                 }
 592         }
 593 }
 594
 595 void
 596 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 597 {
 598         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 599                 (i->second->*pmf) ();
 600         }
 601 }
 602
 603 void
 604 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 605 {
 606         ENSURE_GUI_THREAD (*this, &AudioStreamView::rec_peak_range_ready, start, cnt, weak_src)
 607
 608         boost::shared_ptr<Source> src (weak_src.lock());
 609
 610         if (!src) {
 611                 return;
 612         }
 613
 614         // this is called from the peak building thread
 615
 616         if (rec_data_ready_map.size() == 0 || start + cnt > last_rec_data_frame) {
 617                 last_rec_data_frame = start + cnt;
 618         }
 619
 620         rec_data_ready_map[src] = true;
 621
 622         if (rec_data_ready_map.size() == _trackview.get_diskstream()->n_channels().n_audio()) {
 623                 this->update_rec_regions ();
 624                 rec_data_ready_map.clear();
 625         }
 626 }
 627
 628 void
 629 AudioStreamView::update_rec_regions ()
 630 {
 631         if (use_rec_regions) {
 632                 uint32_t n = 0;
 633
 634                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin();
 635                                 iter != rec_regions.end(); n++) {
 636
 637                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp = iter;
 638                         ++tmp;
 639
 640                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 641                                 /* rect already hidden, this region is done */
 642                                 iter = tmp;
 643                                 continue;
 644                         }
 645
 646                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(iter->first);
 647                         if (!region) {
 648                                 iter = tmp;
 649                                 continue;
 650                         }
 651
 652                         nframes_t origlen = region->length();
 653
 654                         if (region == rec_regions.back().first && rec_active) {
 655
 656                                 if (last_rec_data_frame > region->start()) {
 657
 658                                         nframes_t nlen = last_rec_data_frame - region->start();
 659
 660                                         if (nlen != region->length()) {
 661
 662                                                 region->suspend_property_changes ();
 663                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 664                                                 region->set_length (nlen, this);
 665                                                 region->resume_property_changes ();
 666
 667                                                 if (origlen == 1) {
 668                                                         /* our special initial length */
 669                                                         add_region_view_internal (region, false, true);
 670                                                 }
 671
 672                                                 /* also update rect */
 673                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 674                                                 gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
 675                                                 rect->property_x2() = xend;
 676                                         }
 677                                 }
 678
 679                         } else {
 680
 681                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 682
 683                                 if (nlen != region->length()) {
 684
 685                                         if (region->source_length(0) >= region->start() + nlen) {
 686
 687                                                 region->suspend_property_changes ();
 688                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 689                                                 region->set_length (nlen, this);
 690                                                 region->resume_property_changes ();
 691
 692                                                 if (origlen == 1) {
 693                                                         /* our special initial length */
 694                                                         add_region_view_internal (region, false, true);
 695                                                 }
 696
 697                                                 /* also hide rect */
 698                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 699                                                 rect->hide();
 700
 701                                         }
 702                                 }
 703                         }
 704
 705                         iter = tmp;
 706                 }
 707         }
 708 }
 709
 710 void
 711 AudioStreamView::show_all_fades ()
 712 {
 713         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 714                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 715                 if (arv) {
 716                         arv->set_fade_visibility (true);
 717                 }
 718         }
 719 }
 720
 721 void
 722 AudioStreamView::hide_all_fades ()
 723 {
 724         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 725                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 726                 if (arv) {
 727                         arv->set_fade_visibility (false);
 728                 }
 729         }
 730 }
 731
 732 void
 733 AudioStreamView::show_all_xfades ()
 734 {
 735         foreach_crossfadeview (&CrossfadeView::show);
 736         crossfades_visible = true;
 737 }
 738
 739 void
 740 AudioStreamView::hide_all_xfades ()
 741 {
 742         foreach_crossfadeview (&CrossfadeView::hide);
 743         crossfades_visible = false;
 744 }
 745
 746 void
 747 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 748 {
 749         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 750                 if (i->second->crossfade->involves (rv.audio_region())) {
 751                         i->second->fake_hide ();
 752                 }
 753         }
 754 }
 755
 756 void
 757 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 758 {
 759         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 760                 if (i->second->crossfade->involves (rv.audio_region()) && i->second->visible()) {
 761                         i->second->show ();
 762                 }
 763         }
 764 }
 765
 766 void
 767 AudioStreamView::color_handler ()
 768 {
 769         //case cAudioTrackBase:
 770         if (_trackview.is_track()) {
 771                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 772         }
 773
 774         //case cAudioBusBase:
 775         if (!_trackview.is_track()) {
 776                 if (Profile->get_sae() && _trackview.route()->is_master()) {
 777                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioMasterBusBase.get();
 778                 } else {
 779                         canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 780                 }
 781         }
 782 }
 783
 784 void
 785 AudioStreamView::update_contents_height ()
 786 {
 787         StreamView::update_contents_height ();
 788
 789         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 790                 update_content_height (i->second);
 791         }
 792 }
 793
 794 void
 795 AudioStreamView::update_content_height (CrossfadeView* cv)
 796 {
 797         cv->show ();
 798
 799         if (_layer_display == Overlaid) {
 800
 801                 cv->set_y (0);
 802                 cv->set_height (height);
 803
 804         } else {
 805
 806                 layer_t const inl = cv->crossfade->in()->layer ();
 807                 layer_t const outl = cv->crossfade->out()->layer ();
 808
 809                 layer_t const high = max (inl, outl);
 810                 layer_t const low = min (inl, outl);
 811
 812                 const double h = child_height ();
 813
 814                 cv->set_y ((_layers - high - 1) * h);
 815                 cv->set_height ((high - low + 1) * h);
 816
 817         }
 818 }
 819
 820 void
 821 AudioStreamView::parameter_changed (string const & p)
 822 {
 823         if (p == "show-waveforms") {
 824                 set_show_waveforms (Config->get_show_waveforms ());
 825         } else if (p == "waveform-scale") {
 826                 set_waveform_scale (Config->get_waveform_scale ());
 827         } else if (p == "waveform-shape") {
 828                 set_waveform_shape (Config->get_waveform_shape ());
 829         }
 830 }