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_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
  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         StreamView::remove_region_view(r);
 251 }
 252
 253 void
 254 AudioStreamView::undisplay_diskstream ()
 255 {
 256         StreamView::undisplay_diskstream();
 257
 258         for (CrossfadeViewList::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 259                 delete *i;
 260         }
 261
 262         crossfade_views.clear ();
 263 }
 264
 265 void
 266 AudioStreamView::playlist_modified ()
 267 {
 268         ENSURE_GUI_THREAD (mem_fun (*this, &AudioStreamView::playlist_modified));
 269
 270         StreamView::playlist_modified();
 271
 272         /* make sure xfades are on top and all the regionviews are stacked correctly. */
 273
 274         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 275                 (*i)->get_canvas_group()->raise_to_top();
 276         }
 277 }
 278
 279 void
 280 AudioStreamView::playlist_changed (boost::shared_ptr<Diskstream> ds)
 281 {
 282         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::playlist_changed), ds));
 283
 284         StreamView::playlist_changed(ds);
 285
 286         boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(ds->playlist());
 287         if (apl)
 288                 playlist_connections.push_back (apl->NewCrossfade.connect (mem_fun (*this, &AudioStreamView::add_crossfade)));
 289 }
 290
 291 void
 292 AudioStreamView::add_crossfade_weak (boost::weak_ptr<Crossfade> crossfade)
 293 {
 294         boost::shared_ptr<Crossfade> sp (crossfade.lock());
 295
 296         if (!sp) {
 297                 return;
 298         }
 299
 300         add_crossfade (sp);
 301 }
 302
 303 void
 304 AudioStreamView::add_crossfade (boost::shared_ptr<Crossfade> crossfade)
 305 {
 306         AudioRegionView* lview = 0;
 307         AudioRegionView* rview = 0;
 308
 309         /* we do not allow shared_ptr<T> to be bound to slots */
 310
 311         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::add_crossfade_weak), boost::weak_ptr<Crossfade> (crossfade)));
 312
 313         /* first see if we already have a CrossfadeView for this Crossfade */
 314
 315         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 316                 if ((*i)->crossfade == crossfade) {
 317                         if (!crossfades_visible) {
 318                                 (*i)->hide();
 319                         } else {
 320                                 (*i)->show ();
 321                         }
 322                         (*i)->set_valid (true);
 323                         return;
 324                 }
 325         }
 326
 327         /* create a new one */
 328
 329         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 330                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 331
 332                 if (!lview && arv && (arv->region() == crossfade->out())) {
 333                         lview = arv;
 334                 }
 335                 if (!rview && arv && (arv->region() == crossfade->in())) {
 336                         rview = arv;
 337                 }
 338         }
 339
 340         CrossfadeView *cv = new CrossfadeView (_trackview.canvas_display,
 341                                                _trackview,
 342                                                 crossfade,
 343                                                _samples_per_unit,
 344                                                region_color,
 345                                                *lview, *rview);
 346
 347         crossfade->Invalidated.connect (mem_fun (*this, &AudioStreamView::remove_crossfade));
 348         crossfade_views.push_back (cv);
 349
 350         if (!Config->get_xfades_visible() || !crossfades_visible) {
 351                 cv->hide ();
 352         }
 353 }
 354
 355 void
 356 AudioStreamView::remove_crossfade (boost::shared_ptr<Crossfade> xfade)
 357 {
 358         ENSURE_GUI_THREAD (bind (mem_fun (*this, &AudioStreamView::remove_crossfade), xfade));
 359
 360         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 361                 if ((*i)->crossfade == xfade) {
 362                         delete *i;
 363                         crossfade_views.erase (i);
 364                         break;
 365                 }
 366         }
 367 }
 368
 369 void
 370 AudioStreamView::redisplay_diskstream ()
 371 {
 372         list<RegionView *>::iterator i, tmp;
 373         list<CrossfadeView*>::iterator xi, tmpx;
 374
 375         for (i = region_views.begin(); i != region_views.end(); ++i) {
 376                 (*i)->set_valid (false);
 377         }
 378
 379         for (xi = crossfade_views.begin(); xi != crossfade_views.end(); ++xi) {
 380                 (*xi)->set_valid (false);
 381                 if ((*xi)->visible()) {
 382                         (*xi)->show ();
 383                 }
 384         }
 385
 386         if (_trackview.is_audio_track()) {
 387                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 388
 389                 boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(_trackview.get_diskstream()->playlist());
 390                 if (apl)
 391                         apl->foreach_crossfade (this, &AudioStreamView::add_crossfade);
 392         }
 393
 394         for (i = region_views.begin(); i != region_views.end(); ) {
 395                 tmp = i;
 396                 tmp++;
 397
 398                 if (!(*i)->is_valid()) {
 399                         delete *i;
 400                         region_views.erase (i);
 401                 }
 402
 403                 i = tmp;
 404         }
 405
 406         for (xi = crossfade_views.begin(); xi != crossfade_views.end();) {
 407                 tmpx = xi;
 408                 tmpx++;
 409
 410                 if (!(*xi)->valid()) {
 411                         delete *xi;
 412                         crossfade_views.erase (xi);
 413                 }
 414
 415                 xi = tmpx;
 416         }
 417
 418         /* now fix layering */
 419
 420         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 421                 region_layered (*i);
 422         }
 423 }
 424
 425 void
 426 AudioStreamView::set_show_waveforms (bool yn)
 427 {
 428         for (list<RegionView *>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 429                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 430                 if (arv)
 431                         arv->set_waveform_visible (yn);
 432         }
 433 }
 434
 435 void
 436 AudioStreamView::set_waveform_shape (WaveformShape shape)
 437 {
 438         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 439                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 440                 if (arv)
 441                         arv->set_waveform_shape (shape);
 442         }
 443         _waveform_shape = shape;
 444 }
 445
 446 void
 447 AudioStreamView::set_waveform_scale (WaveformScale scale)
 448 {
 449         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 450                 AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
 451                 if (arv)
 452                         arv->set_waveform_scale (scale);
 453         }
 454         _waveform_scale = scale;
 455 }
 456
 457 void
 458 AudioStreamView::setup_rec_box ()
 459 {
 460         // cerr << _trackview.name() << " streamview SRB\n";
 461
 462         if (_trackview.session().transport_rolling()) {
 463
 464                 // cerr << "\trolling\n";
 465
 466                 if (!rec_active &&
 467                     _trackview.session().record_status() == Session::Recording &&
 468                     _trackview.get_diskstream()->record_enabled()) {
 469
 470                         if (_trackview.audio_track()->mode() == Normal && use_rec_regions && rec_regions.size() == rec_rects.size()) {
 471
 472                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 473
 474                                 SourceList sources;
 475
 476                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 477                                         (*prc).disconnect();
 478                                 }
 479                                 rec_data_ready_connections.clear();
 480
 481                                 // FIXME
 482                                 boost::shared_ptr<AudioDiskstream> ads = boost::dynamic_pointer_cast<AudioDiskstream>(_trackview.get_diskstream());
 483                                 assert(ads);
 484
 485                                 for (uint32_t n=0; n < ads->n_channels().n_audio(); ++n) {
 486                                         boost::shared_ptr<AudioFileSource> src = boost::static_pointer_cast<AudioFileSource> (ads->write_source (n));
 487                                         if (src) {
 488                                                 sources.push_back (src);
 489
 490                                                 rec_data_ready_connections.push_back (src->PeakRangeReady.connect (bind
 491                                                         (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                                 assert(region);
 505                                 region->set_position (_trackview.session().transport_frame(), this);
 506
 507                                 rec_regions.push_back (region);
 508                         }
 509
 510                         /* start a new rec box */
 511
 512                         AudioTrack* at;
 513
 514                         at = _trackview.audio_track(); /* we know what it is already */
 515                         boost::shared_ptr<AudioDiskstream> ds = at->audio_diskstream();
 516                         nframes_t frame_pos = ds->current_capture_start ();
 517                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 518                         gdouble xend;
 519                         uint32_t fill_color;
 520
 521                         switch (_trackview.audio_track()->mode()) {
 522                         case Normal:
 523                                 xend = xstart;
 524                                 fill_color = color_map[cRecordingRectFill];
 525                                 break;
 526
 527                         case Destructive:
 528                                 xend = xstart + 2;
 529                                 fill_color = color_map[cRecordingRectFill];
 530                                 /* make the recording rect translucent to allow
 531                                    the user to see the peak data coming in, etc.
 532                                 */
 533                                 fill_color = UINT_RGBA_CHANGE_A (fill_color, 120);
 534                                 break;
 535                         }
 536
 537                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 538                         rec_rect->property_x1() = xstart;
 539                         rec_rect->property_y1() = 1.0;
 540                         rec_rect->property_x2() = xend;
 541                         rec_rect->property_y2() = (double) _trackview.height - 1;
 542                         rec_rect->property_outline_color_rgba() = color_map[cRecordingRectOutline];
 543                         rec_rect->property_fill_color_rgba() = fill_color;
 544
 545                         RecBoxInfo recbox;
 546                         recbox.rectangle = rec_rect;
 547                         recbox.start = _trackview.session().transport_frame();
 548                         recbox.length = 0;
 549
 550                         rec_rects.push_back (recbox);
 551
 552                         screen_update_connection.disconnect();
 553                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &AudioStreamView::update_rec_box));
 554                         rec_updating = true;
 555                         rec_active = true;
 556
 557                 } else if (rec_active &&
 558                            (_trackview.session().record_status() != Session::Recording ||
 559                             !_trackview.get_diskstream()->record_enabled())) {
 560
 561                         screen_update_connection.disconnect();
 562                         rec_active = false;
 563                         rec_updating = false;
 564
 565                 }
 566
 567         } else {
 568
 569                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 570
 571                 if (!rec_rects.empty() || !rec_regions.empty()) {
 572
 573                         /* disconnect rapid update */
 574                         screen_update_connection.disconnect();
 575
 576                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 577                                 (*prc).disconnect();
 578                         }
 579                         rec_data_ready_connections.clear();
 580
 581                         rec_updating = false;
 582                         rec_active = false;
 583                         last_rec_data_frame = 0;
 584
 585                         /* remove temp regions */
 586
 587                         for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); ) {
 588                                 list<boost::shared_ptr<Region> >::iterator tmp;
 589
 590                                 tmp = iter;
 591                                 ++tmp;
 592
 593                                 (*iter)->drop_references ();
 594
 595                                 iter = tmp;
 596                         }
 597
 598                         rec_regions.clear();
 599
 600                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 601
 602                         /* transport stopped, clear boxes */
 603                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 604                                 RecBoxInfo &rect = (*iter);
 605                                 delete rect.rectangle;
 606                         }
 607
 608                         rec_rects.clear();
 609
 610                 }
 611         }
 612 }
 613
 614 void
 615 AudioStreamView::foreach_crossfadeview (void (CrossfadeView::*pmf)(void))
 616 {
 617         for (list<CrossfadeView*>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 618                 ((*i)->*pmf) ();
 619         }
 620 }
 621
 622 void
 623 AudioStreamView::rec_peak_range_ready (nframes_t start, nframes_t cnt, boost::weak_ptr<Source> weak_src)
 624 {
 625         ENSURE_GUI_THREAD(bind (mem_fun (*this, &AudioStreamView::rec_peak_range_ready), start, cnt, weak_src));
 626
 627         boost::shared_ptr<Source> src (weak_src.lock());
 628
 629         if (!src) {
 630                 return;
 631         }
 632
 633         // this is called from the peak building thread
 634
 635         if (rec_data_ready_map.size() == 0 || start+cnt > last_rec_data_frame) {
 636                 last_rec_data_frame = start + cnt;
 637         }
 638
 639         rec_data_ready_map[src] = true;
 640
 641         if (rec_data_ready_map.size() == _trackview.get_diskstream()->n_channels().n_audio()) {
 642                 this->update_rec_regions ();
 643                 rec_data_ready_map.clear();
 644         }
 645 }
 646
 647 void
 648 AudioStreamView::update_rec_regions ()
 649 {
 650         if (use_rec_regions) {
 651
 652                 uint32_t n = 0;
 653
 654                 for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 655
 656                         list<boost::shared_ptr<Region> >::iterator tmp;
 657
 658                         tmp = iter;
 659                         ++tmp;
 660
 661                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 662                                 /* rect already hidden, this region is done */
 663                                 iter = tmp;
 664                                 continue;
 665                         }
 666
 667                         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(*iter);
 668                         if (!region) {
 669                                 continue;
 670                         }
 671
 672                         nframes_t origlen = region->length();
 673
 674                         if (region == rec_regions.back() && rec_active) {
 675
 676                                 if (last_rec_data_frame > region->start()) {
 677
 678                                         nframes_t nlen = last_rec_data_frame - region->start();
 679
 680                                         if (nlen != region->length()) {
 681
 682                                                 region->freeze ();
 683                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 684                                                 region->set_length (nlen, this);
 685                                                 region->thaw ("updated");
 686
 687                                                 if (origlen == 1) {
 688                                                         /* our special initial length */
 689                                                         add_region_view_internal (region, false);
 690                                                 }
 691
 692                                                 /* also update rect */
 693                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 694                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 695                                                 rect->property_x2() = xend;
 696                                         }
 697                                 }
 698
 699                         } else {
 700
 701                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 702
 703                                 if (nlen != region->length()) {
 704
 705                                         if (region->source(0)->length() >= region->start() + nlen) {
 706
 707                                                 region->freeze ();
 708                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 709                                                 region->set_length (nlen, this);
 710                                                 region->thaw ("updated");
 711
 712                                                 if (origlen == 1) {
 713                                                         /* our special initial length */
 714                                                         add_region_view_internal (region, false);
 715                                                 }
 716
 717                                                 /* also hide rect */
 718                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 719                                                 rect->hide();
 720
 721                                         }
 722                                 }
 723                         }
 724
 725                         iter = tmp;
 726                 }
 727         }
 728 }
 729
 730 void
 731 AudioStreamView::show_all_xfades ()
 732 {
 733         foreach_crossfadeview (&CrossfadeView::show);
 734         crossfades_visible = true;
 735 }
 736
 737 void
 738 AudioStreamView::hide_all_xfades ()
 739 {
 740         foreach_crossfadeview (&CrossfadeView::hide);
 741         crossfades_visible = false;
 742 }
 743
 744 void
 745 AudioStreamView::hide_xfades_involving (AudioRegionView& rv)
 746 {
 747         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 748                 if ((*i)->crossfade->involves (rv.audio_region())) {
 749                         (*i)->fake_hide ();
 750                 }
 751         }
 752 }
 753
 754 void
 755 AudioStreamView::reveal_xfades_involving (AudioRegionView& rv)
 756 {
 757         for (list<CrossfadeView *>::iterator i = crossfade_views.begin(); i != crossfade_views.end(); ++i) {
 758                 if ((*i)->crossfade->involves (rv.audio_region()) && (*i)->visible()) {
 759                         (*i)->show ();
 760                 }
 761         }
 762 }
 763
 764 void
 765 AudioStreamView::color_handler (ColorID id, uint32_t val)
 766 {
 767         switch (id) {
 768         case cAudioTrackBase:
 769                 if (_trackview.is_track()) {
 770                         canvas_rect->property_fill_color_rgba() = val;
 771                 }
 772                 break;
 773         case cAudioBusBase:
 774                 if (!_trackview.is_track()) {
 775                         canvas_rect->property_fill_color_rgba() = val;
 776                 }
 777                 break;
 778         case cAudioTrackOutline:
 779                 canvas_rect->property_outline_color_rgba() = val;
 780                 break;
 781
 782         default:
 783                 break;
 784         }
 785 }
 786