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