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 #include "color.h"
  50
  51 #include "i18n.h"
  52
  53 using namespace ARDOUR;
  54 using namespace PBD;
  55 using namespace Editing;
  56
  57 AudioStreamView::AudioStreamView (AudioTimeAxisView& tv)
  58         : StreamView (tv)
  59 {
  60         crossfades_visible = true;
  61         _waveform_scale = LinearWaveform;
  62         _waveform_shape = Traditional;
  63
  64         if (tv.is_audio_track())
  65                 stream_base_color = color_map[cAudioTrackBase];
  66         else
  67                 stream_base_color = color_map[cAudioBusBase];
  68
  69         canvas_rect->property_fill_color_rgba() = stream_base_color;
  70         canvas_rect->property_outline_color_rgba() = color_map[cAudioTrackOutline];
  71
  72         _amplitude_above_axis = 1.0;
  73
  74         use_rec_regions = tv.editor.show_waveforms_recording ();
  75         last_rec_peak_frame = 0;
  76
  77 }
  78
  79 AudioStreamView::~AudioStreamView ()
  80 {
  81 }
  82
  83 int
  84 AudioStreamView::set_height (gdouble h)
  85 {
  86         /* limit the values to something sane-ish */
  87         if (h < 10.0 || h > 1000.0) {
  88                 return -1;
  89         }
  90
  91         StreamView::set_height(h);
  92
  93         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
  94                 (*i)->set_height (h);
  95         }
  96
  97         return 0;
  98 }
  99
 100 int
 101 AudioStreamView::set_samples_per_unit (gdouble spp)
 102 {
 103         StreamView::set_samples_per_unit(spp);
 104
 105         for (CrossfadeViewList::iterator xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 106                 (*xi)->set_samples_per_unit (spp);
 107         }
 108
 109         return 0;
 110 }
 111
 112 int
 113 AudioStreamView::set_amplitude_above_axis (gdouble app)
 114 {
 115         RegionViewList::iterator i;
 116
 117         if (app < 1.0) {
 118                 return -1;
 119         }
 120
 121         _amplitude_above_axis = app;
 122
 123         for (i = region_views.begin(); i != region_views.end(); ++i) {
 124                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 125                 if (arv)
 126                         arv->set_amplitude_above_axis (app);
 127         }
 128
 129         return 0;
 130 }
 131
 132 void
 133 AudioStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves)
 134 {
 135         AudioRegionView *region_view = 0;
 136
 137         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_region_view), r));
 138
 139         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (r);
 140
 141         if (region == 0) {
 142                 return;
 143         }
 144
 145         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 146                 if ((*i)->region() == r) {
 147
 148                         /* great. we already have a AudioRegionView for this Region. use it again. */
 149
 150                         (*i)->set_valid (true);
 151
 152                         // this might not be necessary
 153                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 154                         if (arv) {
 155                                 arv->set_waveform_scale (_waveform_scale);
 156                                 arv->set_waveform_shape (_waveform_shape);
 157                         }
 158
 159                         return;
 160                 }
 161         }
 162
 163         switch (_trackview.audio_track()->mode()) {
 164         case Normal:
 165                 region_view = new AudioRegionView (canvas_group, _trackview, region,
 166                                                    _samples_per_unit, region_color);
 167                 break;
 168         case Destructive:
 169                 region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
 170                                                        _samples_per_unit, region_color);
 171                 break;
 172         default:
 173                 fatal << string_compose (_("programming error: %1"), "illegal track mode in ::add_region_view_internal") << endmsg;
 174                 /*NOTREACHED*/
 175
 176         }
 177
 178         region_view->init (region_color, wait_for_waves);
 179         region_view->set_amplitude_above_axis(_amplitude_above_axis);
 180         region_views.push_front (region_view);
 181
 182
 183         /* if its the special single-sample length that we use for rec-regions, make it
 184            insensitive to events
 185         */
 186
 187         if (region->length() == 1) {
 188                 region_view->set_sensitive (false);
 189         }
 190
 191         /* if this was the first one, then lets query the waveform scale and shape.
 192            otherwise, we set it to the current value */
 193
 194         if (region_views.size() == 1) {
 195                 if (region_view->waveform_logscaled()) {
 196                         _waveform_scale = LogWaveform;
 197                 } else {
 198                         _waveform_scale = LinearWaveform;
 199                 }
 200
 201                 if (region_view->waveform_rectified()) {
 202                         _waveform_shape = Rectified;
 203                 } else {
 204                         _waveform_shape = Traditional;
 205                 }
 206         }
 207         else {
 208                 region_view->set_waveform_scale(_waveform_scale);
 209                 region_view->set_waveform_shape(_waveform_shape);
 210         }
 211
 212         /* follow global waveform setting */
 213
 214         region_view->set_waveform_visible(_trackview.editor.show_waveforms());
 215
 216         /* catch regionview going away */
 217         region->GoingAway.connect (bind (mem_fun (*this, &AudioStreamView::remove_region_view), boost::weak_ptr<Region> (r)));
 218
 219         RegionViewAdded (region_view);
 220 }
 221
 222 void
 223 AudioStreamView::remove_region_view (boost::weak_ptr<Region> weak_r)
 224 {
 225         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_region_view), weak_r));
 226
 227         boost::shared_ptr<Region> r (weak_r.lock());
 228
 229         if (!r) {
 230                 return;
 231         }
 232
 233         if (!_trackview.session().deletion_in_progress()) {
 234
 235                 for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end();) {
 236                         list<CrossfadeView*>::iterator tmp;
 237
 238                         tmp = i;
 239                         ++tmp;
 240
 241                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(r);
 242                         if (ar && (*i)->crossfade->involves (ar)) {
 243                                 delete *i;
 244                                 crossfade_views.erase (i);
 245                         }
 246
 247                         i = tmp;
 248                 }
 249         }
 250
 251
 252         StreamView::remove_region_view(r);
 253 }
 254
 255 void
 256 AudioStreamView::undisplay_diskstream ()
 257 {
 258         StreamView::undisplay_diskstream();
 259
 260         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 261                 delete *i;
 262         }
 263
 264         crossfade_views.clear ();
 265 }
 266
 267 void
 268 AudioStreamView::playlist_modified ()
 269 {
 270         ENSURE_GUI_THREAD (mem_fun (*this, &AudioStreamView::playlist_modified));
 271
 272         StreamView::playlist_modified();
 273
 274         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 275
 276         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 277                 (*i)->get_canvas_group()->raise_to_top();
 278         }
 279 }
 280
 281 void
 282 AudioStreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 283 {
 284         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::playlist_changed), ds));
 285
 286         StreamView::playlist_changed(ds);
 287
 288         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 289         if (apl)
 290                 playlist_connections.push_back (apl->NewCrossfade.connect (mem_fun (*this, &AudioStreamView::add_crossfade)));
 291 }
 292
 293 void
 294 AudioStreamView::add_crossfade_weak (boost::weak_ptr<Crossfade> crossfade)
 295 {
 296         boost::shared_ptr<Crossfade> sp (crossfade.lock());
 297
 298         if (!sp) {
 299                 return;
 300         }
 301
 302         add_crossfade (sp);
 303 }
 304
 305 void
 306 AudioStreamView::add_crossfade (boost::shared_ptr<Crossfade> crossfade)
 307 {
 308         AudioRegionView* lview = 0;
 309         AudioRegionView* rview = 0;
 310
 311         /* we do not allow shared_ptr<T> to be bound to slots */
 312
 313         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_crossfade_weak), boost::weak_ptr<Crossfade> (crossfade)));
 314
 315         /* first see if we already have a CrossfadeView for this Crossfade */
 316
 317         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 318                 if ((*i)->crossfade == crossfade) {
 319                         if (!crossfades_visible) {
 320                                 (*i)->hide();
 321                         } else {
 322                                 (*i)->show ();
 323                         }
 324                         (*i)->set_valid (true);
 325                         return;
 326                 }
 327         }
 328
 329         /* create a new one */
 330
 331         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 332                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 333
 334                 if (!lview && arv && (arv->region() == crossfade->out())) {
 335                         lview = arv;
 336                 }
 337                 if (!rview && arv && (arv->region() == crossfade->in())) {
 338                         rview = arv;
 339                 }
 340         }
 341
 342         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display,
 343                                                _trackview,
 344                                                 crossfade,
 345                                                _samples_per_unit,
 346                                                region_color,
 347                                                *lview, *rview);
 348
 349         crossfade->Invalidated.connect (mem_fun (*this, &AudioStreamView::remove_crossfade));
 350         crossfade_views.push_back (cv);
 351
 352         if (!Config->get_xfades_visible() || !crossfades_visible) {
 353                 cv->hide ();
 354         }
 355 }
 356
 357 void
 358 AudioStreamView::remove_crossfade (boost::shared_ptr<Crossfade> xfade)
 359 {
 360         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_crossfade), xfade));
 361
 362         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 363                 if ((*i)->crossfade == xfade) {
 364                         delete *i;
 365                         crossfade_views.erase (i);
 366                         break;
 367                 }
 368         }
 369 }
 370
 371 void
 372 AudioStreamView::redisplay_diskstream ()
 373 {
 374         list<RegionView *>::iterator i, tmp;
 375         list<CrossfadeView*>::iterator xi, tmpx;
 376
 377         for (i = region_views.begin(); i != region_views.end(); ++i) {
 378                 (*i)->set_valid (false);
 379         }
 380
 381         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 382                 (*xi)->set_valid (false);
 383                 if ((*xi)->visible()) {
 384                         (*xi)->show ();
 385                 }
 386         }
 387
 388         if (_trackview.is_audio_track()) {
 389                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 390
 391                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(_trackview.get_diskstream()->playlist());
 392                 if (apl)
 393                         apl->foreach_crossfade (this, &AudioStreamView::add_crossfade);
 394         }
 395
 396         for (i = region_views.begin(); i != region_views.end(); ) {
 397                 tmp = i;
 398                 tmp++;
 399
 400                 if (!(*i)->is_valid()) {
 401                         delete *i;
 402                         region_views.erase (i);
 403                 }
 404
 405                 i = tmp;
 406         }
 407
 408         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 409                 tmpx = xi;
 410                 tmpx++;
 411
 412                 if (!(*xi)->valid()) {
 413                         delete *xi;
 414                         crossfade_views.erase (xi);
 415                 }
 416
 417                 xi = tmpx;
 418         }
 419
 420         /* now fix layering */
 421
 422         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 423                 region_layered (*i);
 424         }
 425 }
 426
 427 void
 428 AudioStreamView::set_show_waveforms (bool yn)
 429 {
 430         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 431                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 432                 if (arv)
 433                         arv->set_waveform_visible (yn);
 434         }
 435 }
 436
 437 void
 438 AudioStreamView::set_waveform_shape (WaveformShape shape)
 439 {
 440         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 441                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 442                 if (arv)
 443                         arv->set_waveform_shape (shape);
 444         }
 445         _waveform_shape = shape;
 446 }
 447
 448 void
 449 AudioStreamView::set_waveform_scale (WaveformScale scale)
 450 {
 451         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 452                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 453                 if (arv)
 454                         arv->set_waveform_scale (scale);
 455         }
 456         _waveform_scale = scale;
 457 }
 458
 459 void
 460 AudioStreamView::setup_rec_box ()
 461 {
 462         // cerr << _trackview.name() << " streamview SRB\n";
 463
 464         if (_trackview.session().transport_rolling()) {
 465
 466                 // cerr << "\trolling\n";
 467
 468                 if (!rec_active &&
 469                     _trackview.session().record_status() == Session::Recording &&
 470                     _trackview.get_diskstream()->record_enabled()) {
 471
 472                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 473
 474                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 475
 476                                 SourceList sources;
 477
 478                                 for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 479                                         (*prc).disconnect();
 480                                 }
 481                                 peak_ready_connections.clear();
 482
 483                                 // FIXME
 484                                 boost::shared_ptr<AudioDiskstream> ads = boost::dynamic_pointer_cast<AudioDiskstream>(_trackview.get_diskstream());
 485                                 assert(ads);
 486
 487                                 for (uint32_t n=0; n < ads->n_channels(); ++n) {
 488                                         boost::shared_ptr<AudioFileSource> src = boost::static_pointer_cast<AudioFileSource> (ads->write_source (n));
 489                                         if (src) {
 490                                                 sources.push_back (src);
 491                                                 peak_ready_connections.push_back (src->PeakRangeReady.connect (bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), boost::weak_ptr<Source>(src))));
 492                                         }
 493                                 }
 494
 495                                 // handle multi
 496
 497                                 nframes_t start = 0;
 498                                 if (rec_regions.size() > 0) {
 499                                         start = rec_regions.back()->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 500                                 }
 501
 502                                 boost::shared_ptr<AudioRegion> region (boost::dynamic_pointer_cast<AudioRegion>
 503                                                                        (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 504                                 region->set_position (_trackview.session().transport_frame(), this);
 505
 506                                 rec_regions.push_back (region);
 507                         }
 508
 509                         /* start a new rec box */
 510
 511                         AudioTrack* at;
 512
 513                         at = _trackview.audio_track(); /* we know what it is already */
 514                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 515                         nframes_t frame_pos = ds->current_capture_start ();
 516                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 517                         gdouble xend;
 518                         uint32_t fill_color;
 519
 520                         switch (_trackview.audio_track()->mode()) {
 521                         case Normal:
 522                                 xend = xstart;
 523                                 fill_color = color_map[cRecordingRectFill];
 524                                 break;
 525
 526                         case Destructive:
 527                                 xend = xstart + 2;
 528                                 fill_color = color_map[cRecordingRectFill];
 529                                 /* make the recording rect translucent to allow
 530                                    the user to see the peak data coming in, etc.
 531                                 */
 532                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 533                                 break;
 534                         }
 535
 536                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 537                         rec_rect->property_x1() = xstart;
 538                         rec_rect->property_y1() = 1.0;
 539                         rec_rect->property_x2() = xend;
 540                         rec_rect->property_y2() = (double) _trackview.height - 1;
 541                         rec_rect->property_outline_color_rgba() = color_map[cRecordingRectOutline];
 542                         rec_rect->property_fill_color_rgba() = fill_color;
 543
 544                         RecBoxInfo recbox;
 545                         recbox.rectangle = rec_rect;
 546                         recbox.start = _trackview.session().transport_frame();
 547                         recbox.length = 0;
 548
 549                         rec_rects.push_back (recbox);
 550
 551                         screen_update_connection.disconnect();
 552                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &AudioStreamView::update_rec_box));
 553                         rec_updating = true;
 554                         rec_active = true;
 555
 556                 } else if (rec_active &&
 557                            (_trackview.session().record_status() != Session::Recording ||
 558                             !_trackview.get_diskstream()->record_enabled())) {
 559
 560                         screen_update_connection.disconnect();
 561                         rec_active = false;
 562                         rec_updating = false;
 563
 564                 }
 565
 566         } else {
 567
 568                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 569
 570                 if (!rec_rects.empty() || !rec_regions.empty()) {
 571
 572                         /* disconnect rapid update */
 573                         screen_update_connection.disconnect();
 574
 575                         for (list<sigc::connection>::iterator prc = peak_ready_connections.begin(); prc != peak_ready_connections.end(); ++prc) {
 576                                 (*prc).disconnect();
 577                         }
 578                         peak_ready_connections.clear();
 579
 580                         rec_updating = false;
 581                         rec_active = false;
 582                         last_rec_peak_frame = 0;
 583
 584                         /* remove temp regions */
 585
 586                         for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 587                                 list<boost::shared_ptr<Region> >::iterator tmp;
 588
 589                                 tmp = iter;
 590                                 ++tmp;
 591
 592                                 (*iter)->drop_references ();
 593
 594                                 iter = tmp;
 595                         }
 596
 597                         rec_regions.clear();
 598
 599                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 600
 601                         /* transport stopped, clear boxes */
 602                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 603                                 RecBoxInfo &rect = (*iter);
 604                                 delete rect.rectangle;
 605                         }
 606
 607                         rec_rects.clear();
 608
 609                 }
 610         }
 611 }
 612
 613 void
 614 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 615 {
 616         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 617                 ((*i)->*pmf) ();
 618         }
 619 }
 620
 621 void
 622 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 623 {
 624         ENSURE_GUI_THREAD(bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), start, cnt, weak_src));
 625
 626         boost::shared_ptr<Source> src (weak_src.lock());
 627
 628         if (!src) {
 629                 return;
 630         }
 631
 632         // this is called from the peak building thread
 633
 634         if (rec_peak_ready_map.size() == 0 || start+cnt > last_rec_peak_frame) {
 635                 last_rec_peak_frame = start + cnt;
 636         }
 637
 638         rec_peak_ready_map[src] = true;
 639
 640         if (rec_peak_ready_map.size() == _trackview.get_diskstream()->n_channels()) {
 641                 this->update_rec_regions ();
 642                 rec_peak_ready_map.clear();
 643         }
 644 }
 645
 646 void
 647 AudioStreamView::update_rec_regions ()
 648 {
 649         if (use_rec_regions) {
 650
 651                 uint32_t n = 0;
 652
 653                 for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 654
 655                         list<boost::shared_ptr<Region> >::iterator tmp;
 656
 657                         tmp = iter;
 658                         ++tmp;
 659
 660                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 661                                 /* rect already hidden, this region is done */
 662                                 iter = tmp;
 663                                 continue;
 664                         }
 665
 666                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(*iter);
 667                         if (!region) {
 668                                 continue;
 669                         }
 670
 671                         nframes_t origlen = region->length();
 672
 673                         if (region == rec_regions.back() && rec_active) {
 674
 675                                 if (last_rec_peak_frame > region->start()) {
 676
 677                                         nframes_t nlen = last_rec_peak_frame - region->start();
 678
 679                                         if (nlen != region->length()) {
 680
 681                                                 region->freeze ();
 682                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 683                                                 region->set_length (nlen, this);
 684                                                 region->thaw ("updated");
 685
 686                                                 if (origlen == 1) {
 687                                                         /* our special initial length */
 688                                                         add_region_view_internal (region, false);
 689                                                 }
 690
 691                                                 /* also update rect */
 692                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 693                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 694                                                 rect->property_x2() = xend;
 695                                         }
 696                                 }
 697
 698                         } else {
 699
 700                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 701
 702                                 if (nlen != region->length()) {
 703
 704                                         if (region->source(0)->length() >= region->start() + nlen) {
 705
 706                                                 region->freeze ();
 707                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 708                                                 region->set_length (nlen, this);
 709                                                 region->thaw ("updated");
 710
 711                                                 if (origlen == 1) {
 712                                                         /* our special initial length */
 713                                                         add_region_view_internal (region, false);
 714                                                 }
 715
 716                                                 /* also hide rect */
 717                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 718                                                 rect->hide();
 719
 720                                         }
 721                                 }
 722                         }
 723
 724                         iter = tmp;
 725                 }
 726         }
 727 }
 728
 729 void
 730 AudioStreamView::show_all_xfades ()
 731 {
 732         foreach_crossfadeview (&CrossfadeView::show);
 733         crossfades_visible = true;
 734 }
 735
 736 void
 737 AudioStreamView::hide_all_xfades ()
 738 {
 739         foreach_crossfadeview (&CrossfadeView::hide);
 740         crossfades_visible = false;
 741 }
 742
 743 void
 744 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 745 {
 746         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 747                 if ((*i)->crossfade->involves (rv.audio_region())) {
 748                         (*i)->fake_hide ();
 749                 }
 750         }
 751 }
 752
 753 void
 754 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 755 {
 756         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 757                 if ((*i)->crossfade->involves (rv.audio_region()) && (*i)->visible()) {
 758                         (*i)->show ();
 759                 }
 760         }
 761 }
 762
 763 void
 764 AudioStreamView::color_handler (ColorID id, uint32_t val)
 765 {
 766         switch (id) {
 767         case cAudioTrackBase:
 768                 if (_trackview.is_track()) {
 769                         canvas_rect->property_fill_color_rgba() = val;
 770                 }
 771                 break;
 772         case cAudioBusBase:
 773                 if (!_trackview.is_track()) {
 774                         canvas_rect->property_fill_color_rgba() = val;
 775                 }
 776                 break;
 777         case cAudioTrackOutline:
 778                 canvas_rect->property_outline_color_rgba() = val;
 779                 break;
 780
 781         default:
 782                 break;
 783         }
 784 }
 785