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
  22 #include <gtkmm.h>
  23
  24 #include <gtkmm2ext/gtk_ui.h>
  25
  26 #include <ardour/audioplaylist.h>
  27 #include <ardour/audioregion.h>
  28 #include <ardour/audiofilesource.h>
  29 #include <ardour/audio_diskstream.h>
  30 #include <ardour/audio_track.h>
  31 #include <ardour/playlist_templates.h>
  32 #include <ardour/source.h>
  33 #include <ardour/region_factory.h>
  34
  35 #include "audio_streamview.h"
  36 #include "audio_region_view.h"
  37 #include "tape_region_view.h"
  38 #include "audio_time_axis.h"
  39 #include "canvas-waveview.h"
  40 #include "canvas-simplerect.h"
  41 #include "region_selection.h"
  42 #include "selection.h"
  43 #include "public_editor.h"
  44 #include "ardour_ui.h"
  45 #include "crossfade_view.h"
  46 #include "rgb_macros.h"
  47 #include "gui_thread.h"
  48 #include "utils.h"
  49
  50 #include "i18n.h"
  51
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54 using namespace Editing;
  55
  56 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  57         : StreamView (tv)
  58 {
  59         crossfades_visible = true;
  60         _waveform_scale = LinearWaveform;
  61         _waveform_shape = Traditional;
  62
  63         if (tv.is_audio_track())
  64                 stream_base_color = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
  65         else
  66                 stream_base_color = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
  67
  68         canvas_rect->property_fill_color_rgba() = stream_base_color;
  69         canvas_rect->property_outline_color_rgba() = RGBA_BLACK;
  70
  71         _amplitude_above_axis = 1.0;
  72
  73         use_rec_regions = tv.editor.show_waveforms_recording ();
  74         last_rec_peak_frame = 0;
  75
  76 }
  77
  78 AudioStreamView::~AudioStreamView ()
  79 {
  80 }
  81
  82 int
  83 AudioStreamView::set_height (gdouble h)
  84 {
  85         /* limit the values to something sane-ish */
  86         if (h < 10.0 || h > 1000.0) {
  87                 return -1;
  88         }
  89
  90         StreamView::set_height(h);
  91
  92         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
  93                 (*i)->set_height (h);
  94         }
  95
  96         return 0;
  97 }
  98
  99 int
 100 AudioStreamView::set_samples_per_unit (gdouble spp)
 101 {
 102         StreamView::set_samples_per_unit(spp);
 103
 104         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 105                 (*xi)->set_samples_per_unit (spp);
 106         }
 107
 108         return 0;
 109 }
 110
 111 int
 112 AudioStreamView::set_amplitude_above_axis (gdouble app)
 113 {
 114         RegionViewList::iterator i;
 115
 116         if (app < 1.0) {
 117                 return -1;
 118         }
 119
 120         _amplitude_above_axis = app;
 121
 122         for (i = region_views.begin(); i != region_views.end(); ++i) {
 123                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 124                 if (arv)
 125                         arv->set_amplitude_above_axis (app);
 126         }
 127
 128         return 0;
 129 }
 130
 131 void
 132 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves)
 133 {
 134         AudioRegionView *region_view = 0;
 135
 136         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 137
 138         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 139
 140         if (region == 0) {
 141                 return;
 142         }
 143
 144         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 145                 if ((*i)->region() == r) {
 146
 147                         /* great. we already have a AudioRegionView for this Region. use it again. */
 148
 149                         (*i)->set_valid (true);
 150
 151                         // this might not be necessary
 152                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 153                         if (arv) {
 154                                 arv->set_waveform_scale (_waveform_scale);
 155                                 arv->set_waveform_shape (_waveform_shape);
 156                         }
 157
 158                         return;
 159                 }
 160         }
 161
 162         switch (_trackview.audio_track()->mode()) {
 163         case Normal:
 164                 region_view = new AudioRegionView (canvas_group, _trackview, region,
 165                                                    _samples_per_unit, region_color);
 166                 break;
 167         case Destructive:
 168                 region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
 169                                                        _samples_per_unit, region_color);
 170                 break;
 171         default:
 172                 fatal << string_compose (_("programming error: %1"), "illegal track mode in ::add_region_view_internal") << endmsg;
 173                 /*NOTREACHED*/
 174
 175         }
 176
 177         region_view->init (region_color, wait_for_waves);
 178         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 179         region_views.push_front (region_view);
 180
 181
 182         /* if its the special single-sample length that we use for rec-regions, make it
 183            insensitive to events
 184         */
 185
 186         if (region->length() == 1) {
 187                 region_view->set_sensitive (false);
 188         }
 189
 190         /* if this was the first one, then lets query the waveform scale and shape.
 191            otherwise, we set it to the current value */
 192
 193         if (region_views.size() == 1) {
 194                 if (region_view->waveform_logscaled()) {
 195                         _waveform_scale = LogWaveform;
 196                 } else {
 197                         _waveform_scale = LinearWaveform;
 198                 }
 199
 200                 if (region_view->waveform_rectified()) {
 201                         _waveform_shape = Rectified;
 202                 } else {
 203                         _waveform_shape = Traditional;
 204                 }
 205         }
 206         else {
 207                 region_view->set_waveform_scale(_waveform_scale);
 208                 region_view->set_waveform_shape(_waveform_shape);
 209         }
 210
 211         /* follow global waveform setting */
 212
 213         region_view->set_waveform_visible(_trackview.editor.show_waveforms());
 214
 215         /* catch regionview going away */
 216         region->GoingAway.connect (bind (mem_fun (*this, &AudioStreamView::remove_region_view), boost::weak_ptr<Region> (r)));
 217
 218         RegionViewAdded (region_view);
 219 }
 220
 221 void
 222 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 223 {
 224         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_region_view), weak_r));
 225
 226         boost::shared_ptr<Region> r (weak_r.lock());
 227
 228         if (!r) {
 229                 return;
 230         }
 231
 232         if (!_trackview.session().deletion_in_progress()) {
 233
 234                 for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 235                         list<CrossfadeView*>::iterator tmp;
 236
 237                         tmp = i;
 238                         ++tmp;
 239
 240                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 241                         if (ar && (*i)->crossfade->involves (ar)) {
 242                                 delete *i;
 243                                 crossfade_views.erase (i);
 244                         }
 245
 246                         i = tmp;
 247                 }
 248         }
 249
 250
 251         StreamView::remove_region_view(r);
 252 }
 253
 254 void
 255 AudioStreamView::undisplay_diskstream ()
 256 {
 257         StreamView::undisplay_diskstream();
 258
 259         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 260                 delete *i;
 261         }
 262
 263         crossfade_views.clear ();
 264 }
 265
 266 void
 267 AudioStreamView::playlist_modified ()
 268 {
 269         ENSURE_GUI_THREAD (mem_fun (*this, &AudioStreamView::playlist_modified));
 270
 271         StreamView::playlist_modified();
 272
 273         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 274
 275         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 276                 (*i)->get_canvas_group()->raise_to_top();
 277         }
 278 }
 279
 280 void
 281 AudioStreamView::playlist_changed (boost::weak_ptr<Diskstream> wptr)
 282 {
 283         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::playlist_changed), wptr));
 284
 285         boost::shared_ptr<Diskstream> ds  = wptr.lock();
 286
 287         if (!ds) {
 288                 return;
 289         }
 290
 291         StreamView::playlist_changed(ds);
 292
 293         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 294         if (apl)
 295                 playlist_connections.push_back (apl->NewCrossfade.connect (mem_fun (*this, &AudioStreamView::add_crossfade)));
 296 }
 297
 298 void
 299 AudioStreamView::add_crossfade_weak (boost::weak_ptr<Crossfade> crossfade)
 300 {
 301         boost::shared_ptr<Crossfade> sp (crossfade.lock());
 302
 303         if (!sp) {
 304                 return;
 305         }
 306
 307         add_crossfade (sp);
 308 }
 309
 310 void
 311 AudioStreamView::add_crossfade (boost::shared_ptr<Crossfade> crossfade)
 312 {
 313         AudioRegionView* lview = 0;
 314         AudioRegionView* rview = 0;
 315
 316         /* we do not allow shared_ptr<T> to be bound to slots */
 317
 318         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_crossfade_weak), boost::weak_ptr<Crossfade> (crossfade)));
 319
 320         /* first see if we already have a CrossfadeView for this Crossfade */
 321
 322         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 323                 if ((*i)->crossfade == crossfade) {
 324                         if (!crossfades_visible) {
 325                                 (*i)->hide();
 326                         } else {
 327                                 (*i)->show ();
 328                         }
 329                         (*i)->set_valid (true);
 330                         return;
 331                 }
 332         }
 333
 334         /* create a new one */
 335
 336         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 337                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 338
 339                 if (!lview && arv && (arv->region() == crossfade->out())) {
 340                         lview = arv;
 341                 }
 342                 if (!rview && arv && (arv->region() == crossfade->in())) {
 343                         rview = arv;
 344                 }
 345         }
 346
 347         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display,
 348                                                _trackview,
 349                                                 crossfade,
 350                                                _samples_per_unit,
 351                                                region_color,
 352                                                *lview, *rview);
 353
 354         crossfade->Invalidated.connect (mem_fun (*this, &AudioStreamView::remove_crossfade));
 355         crossfade_views.push_back (cv);
 356
 357         if (!Config->get_xfades_visible() || !crossfades_visible) {
 358                 cv->hide ();
 359         }
 360 }
 361
 362 void
 363 AudioStreamView::remove_crossfade (boost::shared_ptr<Crossfade> xfade)
 364 {
 365         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_crossfade), xfade));
 366
 367         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 368                 if ((*i)->crossfade == xfade) {
 369                         delete *i;
 370                         crossfade_views.erase (i);
 371                         break;
 372                 }
 373         }
 374 }
 375
 376 void
 377 AudioStreamView::redisplay_diskstream ()
 378 {
 379         list<RegionView *>::iterator i, tmp;
 380         list<CrossfadeView*>::iterator xi, tmpx;
 381
 382         for (i = region_views.begin(); i != region_views.end(); ++i) {
 383                 (*i)->set_valid (false);
 384         }
 385
 386         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 387                 (*xi)->set_valid (false);
 388                 if ((*xi)->visible()) {
 389                         (*xi)->show ();
 390                 }
 391         }
 392
 393         if (_trackview.is_audio_track()) {
 394                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 395
 396                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(_trackview.get_diskstream()->playlist());
 397                 if (apl)
 398                         apl->foreach_crossfade (this, &AudioStreamView::add_crossfade);
 399         }
 400
 401         for (i = region_views.begin(); i != region_views.end(); ) {
 402                 tmp = i;
 403                 tmp++;
 404
 405                 if (!(*i)->is_valid()) {
 406                         delete *i;
 407                         region_views.erase (i);
 408                 }
 409
 410                 i = tmp;
 411         }
 412
 413         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 414                 tmpx = xi;
 415                 tmpx++;
 416
 417                 if (!(*xi)->valid()) {
 418                         delete *xi;
 419                         crossfade_views.erase (xi);
 420                 }
 421
 422                 xi = tmpx;
 423         }
 424
 425         /* now fix layering */
 426
 427         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 428                 region_layered (*i);
 429         }
 430 }
 431
 432 void
 433 AudioStreamView::set_show_waveforms (bool yn)
 434 {
 435         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 436                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 437                 if (arv)
 438                         arv->set_waveform_visible (yn);
 439         }
 440 }
 441
 442 void
 443 AudioStreamView::set_waveform_shape (WaveformShape shape)
 444 {
 445         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 446                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 447                 if (arv)
 448                         arv->set_waveform_shape (shape);
 449         }
 450         _waveform_shape = shape;
 451 }
 452
 453 void
 454 AudioStreamView::set_waveform_scale (WaveformScale scale)
 455 {
 456         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 457                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 458                 if (arv)
 459                         arv->set_waveform_scale (scale);
 460         }
 461         _waveform_scale = scale;
 462 }
 463
 464 void
 465 AudioStreamView::setup_rec_box ()
 466 {
 467         // cerr << _trackview.name() << " streamview SRB\n";
 468
 469         if (_trackview.session().transport_rolling()) {
 470
 471                 // cerr << "\trolling\n";
 472
 473                 if (!rec_active &&
 474                     _trackview.session().record_status() == Session::Recording &&
 475                     _trackview.get_diskstream()->record_enabled()) {
 476
 477                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 478
 479                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 480
 481                                 SourceList sources;
 482
 483                                 for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 484                                         (*prc).disconnect();
 485                                 }
 486                                 peak_ready_connections.clear();
 487
 488                                 // FIXME
 489                                 boost::shared_ptr<AudioDiskstream> ads = boost::dynamic_pointer_cast<AudioDiskstream>(_trackview.get_diskstream());
 490                                 assert(ads);
 491
 492                                 for (uint32_t n=0; n < ads->n_channels(); ++n) {
 493                                         boost::shared_ptr<AudioFileSource> src = boost::static_pointer_cast<AudioFileSource> (ads->write_source (n));
 494                                         if (src) {
 495                                                 sources.push_back (src);
 496                                                 peak_ready_connections.push_back (src->PeakRangeReady.connect (bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), boost::weak_ptr<Source>(src))));
 497                                         }
 498                                 }
 499
 500                                 // handle multi
 501
 502                                 nframes_t start = 0;
 503                                 if (rec_regions.size() > 0) {
 504                                         start = rec_regions.back()->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 505                                 }
 506
 507                                 boost::shared_ptr<AudioRegion> region (boost::dynamic_pointer_cast<AudioRegion>
 508                                                                        (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 509                                 region->set_position (_trackview.session().transport_frame(), this);
 510
 511                                 rec_regions.push_back (region);
 512                         }
 513
 514                         /* start a new rec box */
 515
 516                         AudioTrack* at;
 517
 518                         at = _trackview.audio_track(); /* we know what it is already */
 519                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 520                         nframes_t frame_pos = ds->current_capture_start ();
 521                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 522                         gdouble xend;
 523                         uint32_t fill_color;
 524
 525                         switch (_trackview.audio_track()->mode()) {
 526                         case Normal:
 527                                 xend = xstart;
 528                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 529                                 break;
 530
 531                         case Destructive:
 532                                 xend = xstart + 2;
 533                                 fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 534                                 /* make the recording rect translucent to allow
 535                                    the user to see the peak data coming in, etc.
 536                                 */
 537                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 538                                 break;
 539                         }
 540
 541                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 542                         rec_rect->property_x1() = xstart;
 543                         rec_rect->property_y1() = 1.0;
 544                         rec_rect->property_x2() = xend;
 545                         rec_rect->property_y2() = (double) _trackview.height - 1;
 546                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 547                         rec_rect->property_fill_color_rgba() = fill_color;
 548
 549                         RecBoxInfo recbox;
 550                         recbox.rectangle = rec_rect;
 551                         recbox.start = _trackview.session().transport_frame();
 552                         recbox.length = 0;
 553
 554                         rec_rects.push_back (recbox);
 555
 556                         screen_update_connection.disconnect();
 557                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &AudioStreamView::update_rec_box));
 558                         rec_updating = true;
 559                         rec_active = true;
 560
 561                 } else if (rec_active &&
 562                            (_trackview.session().record_status() != Session::Recording ||
 563                             !_trackview.get_diskstream()->record_enabled())) {
 564
 565                         screen_update_connection.disconnect();
 566                         rec_active = false;
 567                         rec_updating = false;
 568
 569                 }
 570
 571         } else {
 572
 573                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 574
 575                 if (!rec_rects.empty() || !rec_regions.empty()) {
 576
 577                         /* disconnect rapid update */
 578                         screen_update_connection.disconnect();
 579
 580                         for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 581                                 (*prc).disconnect();
 582                         }
 583                         peak_ready_connections.clear();
 584
 585                         rec_updating = false;
 586                         rec_active = false;
 587                         last_rec_peak_frame = 0;
 588
 589                         /* remove temp regions */
 590
 591                         for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 592                                 list<boost::shared_ptr<Region> >::iterator tmp;
 593
 594                                 tmp = iter;
 595                                 ++tmp;
 596
 597                                 (*iter)->drop_references ();
 598
 599                                 iter = tmp;
 600                         }
 601
 602                         rec_regions.clear();
 603
 604                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 605
 606                         /* transport stopped, clear boxes */
 607                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 608                                 RecBoxInfo &rect = (*iter);
 609                                 delete rect.rectangle;
 610                         }
 611
 612                         rec_rects.clear();
 613
 614                 }
 615         }
 616 }
 617
 618 void
 619 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 620 {
 621         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 622                 ((*i)->*pmf) ();
 623         }
 624 }
 625
 626 void
 627 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 628 {
 629         ENSURE_GUI_THREAD(bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), start, cnt, weak_src));
 630
 631         boost::shared_ptr<Source> src (weak_src.lock());
 632
 633         if (!src) {
 634                 return;
 635         }
 636
 637         // this is called from the peak building thread
 638
 639         if (rec_peak_ready_map.size() == 0 || start+cnt > last_rec_peak_frame) {
 640                 last_rec_peak_frame = start + cnt;
 641         }
 642
 643         rec_peak_ready_map[src] = true;
 644
 645         if (rec_peak_ready_map.size() == _trackview.get_diskstream()->n_channels()) {
 646                 this->update_rec_regions ();
 647                 rec_peak_ready_map.clear();
 648         }
 649 }
 650
 651 void
 652 AudioStreamView::update_rec_regions ()
 653 {
 654         if (use_rec_regions) {
 655
 656                 uint32_t n = 0;
 657
 658                 for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 659
 660                         list<boost::shared_ptr<Region> >::iterator tmp;
 661
 662                         tmp = iter;
 663                         ++tmp;
 664
 665                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 666                                 /* rect already hidden, this region is done */
 667                                 iter = tmp;
 668                                 continue;
 669                         }
 670
 671                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(*iter);
 672                         if (!region) {
 673                                 continue;
 674                         }
 675
 676                         nframes_t origlen = region->length();
 677
 678                         if (region == rec_regions.back() && rec_active) {
 679
 680                                 if (last_rec_peak_frame > region->start()) {
 681
 682                                         nframes_t nlen = last_rec_peak_frame - region->start();
 683
 684                                         if (nlen != region->length()) {
 685
 686                                                 region->freeze ();
 687                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 688                                                 region->set_length (nlen, this);
 689                                                 region->thaw ("updated");
 690
 691                                                 if (origlen == 1) {
 692                                                         /* our special initial length */
 693                                                         add_region_view_internal (region, false);
 694                                                 }
 695
 696                                                 /* also update rect */
 697                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 698                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 699                                                 rect->property_x2() = xend;
 700                                         }
 701                                 }
 702
 703                         } else {
 704
 705                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 706
 707                                 if (nlen != region->length()) {
 708
 709                                         if (region->source(0)->length() >= region->start() + nlen) {
 710
 711                                                 region->freeze ();
 712                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 713                                                 region->set_length (nlen, this);
 714                                                 region->thaw ("updated");
 715
 716                                                 if (origlen == 1) {
 717                                                         /* our special initial length */
 718                                                         add_region_view_internal (region, false);
 719                                                 }
 720
 721                                                 /* also hide rect */
 722                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 723                                                 rect->hide();
 724
 725                                         }
 726                                 }
 727                         }
 728
 729                         iter = tmp;
 730                 }
 731         }
 732 }
 733
 734 void
 735 AudioStreamView::show_all_xfades ()
 736 {
 737         foreach_crossfadeview (&CrossfadeView::show);
 738         crossfades_visible = true;
 739 }
 740
 741 void
 742 AudioStreamView::hide_all_xfades ()
 743 {
 744         foreach_crossfadeview (&CrossfadeView::hide);
 745         crossfades_visible = false;
 746 }
 747
 748 void
 749 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 750 {
 751         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 752                 if ((*i)->crossfade->involves (rv.audio_region())) {
 753                         (*i)->fake_hide ();
 754                 }
 755         }
 756 }
 757
 758 void
 759 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 760 {
 761         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 762                 if ((*i)->crossfade->involves (rv.audio_region()) && (*i)->visible()) {
 763                         (*i)->show ();
 764                 }
 765         }
 766 }
 767
 768 void
 769 AudioStreamView::color_handler ()
 770 {
 771         if (_trackview.is_track()) {
 772                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioTrackBase.get();
 773         }
 774
 775         if (!_trackview.is_track()) {
 776                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_AudioBusBase.get();
 777         }
 778
 779 }
 780