gtk2_ardour/midi_streamview.cc

   1 /*
   2     Copyright (C) 2001-2007 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <cmath>
  20 #include <cassert>
  21 #include <utility>
  22
  23 #include <gtkmm.h>
  24
  25 #include <gtkmm2ext/gtk_ui.h>
  26
  27 #include <ardour/midi_playlist.h>
  28 #include <ardour/midi_region.h>
  29 #include <ardour/midi_source.h>
  30 #include <ardour/midi_diskstream.h>
  31 #include <ardour/midi_track.h>
  32 #include <ardour/midi_events.h>
  33 #include <ardour/smf_source.h>
  34 #include <ardour/region_factory.h>
  35
  36 #include "midi_streamview.h"
  37 #include "region_view.h"
  38 #include "midi_region_view.h"
  39 #include "midi_time_axis.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 "rgb_macros.h"
  46 #include "gui_thread.h"
  47 #include "utils.h"
  48 #include "simplerect.h"
  49 #include "lineset.h"
  50
  51 using namespace std;
  52 using namespace ARDOUR;
  53 using namespace PBD;
  54 using namespace Editing;
  55
  56 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
  57         : StreamView (tv)
  58         , note_range_adjustment(0.0f, 0.0f, 0.0f)
  59         , _range(ContentsRange)
  60         , _range_sum_cache(-1.0)
  61         , _lowest_note(60)
  62         , _highest_note(60)
  63 {
  64         if (tv.is_track())
  65                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
  66         else
  67                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();
  68
  69         use_rec_regions = tv.editor.show_waveforms_recording ();
  70
  71         _note_lines = new ArdourCanvas::Lineset(*canvas_group, ArdourCanvas::Lineset::Horizontal);
  72
  73         _note_lines->property_x1() = 0;
  74         _note_lines->property_y1() = 0;
  75         _note_lines->property_x2() = trackview().editor.frame_to_pixel (max_frames);
  76         _note_lines->property_y2() = 0;
  77
  78         _note_lines->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), _note_lines, &_trackview));
  79
  80         note_range_adjustment.signal_value_changed().connect (mem_fun (*this, &MidiStreamView::note_range_adjustment_changed));
  81         ColorsChanged.connect(mem_fun(*this, &MidiStreamView::draw_note_lines));
  82 }
  83
  84 MidiStreamView::~MidiStreamView ()
  85 {
  86 }
  87
  88
  89 RegionView*
  90 MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd)
  91 {
  92         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
  93
  94         if (region == 0) {
  95                 return NULL;
  96         }
  97
  98         MidiRegionView *region_view;
  99         list<RegionView *>::iterator i;
 100
 101         for (i = region_views.begin(); i != region_views.end(); ++i) {
 102                 if ((*i)->region() == r) {
 103
 104                         /* great. we already have a MidiRegionView for this Region. use it again. */
 105
 106                         (*i)->set_valid (true);
 107                         (*i)->enable_display(wfd);
 108                         display_region(dynamic_cast<MidiRegionView*>(*i), wfd);
 109
 110                         return NULL;
 111                 }
 112         }
 113
 114         region_view = new MidiRegionView (canvas_group, _trackview, region,
 115                         _samples_per_unit, region_color);
 116
 117         region_view->init (region_color, false);
 118         region_views.push_front (region_view);
 119
 120         /* follow global waveform setting */
 121
 122         if (wfd) {
 123                 region_view->enable_display(true);
 124                 region_view->midi_region()->midi_source(0)->load_model();
 125         }
 126
 127         /* display events and find note range */
 128         display_region(region_view, wfd);
 129
 130         /* always display at least 1 octave range */
 131         _highest_note = max(_highest_note, static_cast<uint8_t>(_lowest_note + 11));
 132
 133         /* catch regionview going away */
 134         region->GoingAway.connect (bind (mem_fun (*this, &MidiStreamView::remove_region_view), region));
 135
 136         RegionViewAdded (region_view);
 137
 138         return region_view;
 139 }
 140
 141 void
 142 MidiStreamView::display_region(MidiRegionView* region_view, bool load_model)
 143 {
 144         if ( ! region_view)
 145                 return;
 146
 147         boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
 148
 149         if (load_model)
 150                 source->load_model();
 151
 152         // Find our note range
 153         if (source->model())
 154                 for (size_t i=0; i < source->model()->n_notes(); ++i)
 155                         update_bounds(source->model()->note_at(i)->note());
 156
 157         // Display region contents
 158         region_view->display_model(source->model());
 159 }
 160
 161 void
 162 MidiStreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
 163 {
 164         StreamView::display_diskstream(ds);
 165         draw_note_lines();
 166         NoteRangeChanged();
 167 }
 168
 169 // FIXME: code duplication with AudioStreamView
 170 void
 171 MidiStreamView::redisplay_diskstream ()
 172 {
 173         list<RegionView *>::iterator i, tmp;
 174
 175         for (i = region_views.begin(); i != region_views.end(); ++i) {
 176                 (*i)->enable_display(true); // FIXME: double display, remove
 177                 (*i)->set_valid (false);
 178
 179                 /* FIXME: slow.  MidiRegionView needs a find_note_range method
 180                  * that finds the range without wasting time drawing the events */
 181
 182                 // Load model if it isn't already, to get note range
 183                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
 184                 mrv->midi_region()->midi_source(0)->load_model();
 185         }
 186
 187         //_lowest_note = 60; // middle C
 188         //_highest_note = _lowest_note + 11;
 189
 190         if (_trackview.is_midi_track()) {
 191                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 192         }
 193
 194         /* Always display at least one octave */
 195         if (_highest_note == 127) {
 196                 if (_lowest_note > (127 - 11))
 197                         _lowest_note = 127 - 11;
 198         } else if (_highest_note < _lowest_note + 11) {
 199                 _highest_note = _lowest_note + 11;
 200         }
 201
 202         for (i = region_views.begin(); i != region_views.end(); ) {
 203                 tmp = i;
 204                 tmp++;
 205
 206                 if (!(*i)->is_valid()) {
 207                         delete *i;
 208                         region_views.erase (i);
 209                 } else {
 210                         (*i)->enable_display(true);
 211                         (*i)->set_y_position_and_height(0, height); // apply note range
 212                 }
 213
 214                 i = tmp;
 215         }
 216
 217         /* now fix layering */
 218
 219         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 220                 region_layered (*i);
 221         }
 222
 223         note_range_adjustment.set_page_size(_highest_note - _lowest_note);
 224         note_range_adjustment.set_value(_lowest_note);
 225         NoteRangeChanged();
 226         draw_note_lines();
 227 }
 228
 229
 230 void
 231 MidiStreamView::update_contents_y_position_and_height ()
 232 {
 233         StreamView::update_contents_y_position_and_height();
 234         _note_lines->property_y2() = height;
 235         draw_note_lines();
 236 }
 237
 238 void
 239 MidiStreamView::draw_note_lines()
 240 {
 241         double y;
 242         double prev_y = contents_height();
 243         uint32_t color;
 244
 245         _note_lines->clear();
 246
 247         for(int i = _lowest_note; i <= _highest_note; ++i) {
 248                 y = floor(note_to_y(i));
 249
 250                 _note_lines->add_line(prev_y, 1.0, ARDOUR_UI::config()->canvasvar_PianoRollBlackOutline.get());
 251
 252                 switch(i % 12) {
 253                 case 1:
 254                 case 3:
 255                 case 6:
 256                 case 8:
 257                 case 10:
 258                         color = ARDOUR_UI::config()->canvasvar_PianoRollBlack.get();
 259                         break;
 260                 default:
 261                         color = ARDOUR_UI::config()->canvasvar_PianoRollWhite.get();
 262                         break;
 263                 }
 264
 265                 if(i == _highest_note) {
 266                         _note_lines->add_line(y, prev_y - y, color);
 267                 }
 268                 else {
 269                         _note_lines->add_line(y + 1.0, prev_y - y - 1.0, color);
 270                 }
 271
 272                 prev_y = y;
 273         }
 274 }
 275
 276
 277 void
 278 MidiStreamView::set_note_range(VisibleNoteRange r)
 279 {
 280         _range = r;
 281         if (r == FullRange) {
 282                 _lowest_note = 0;
 283                 _highest_note = 127;
 284         } else {
 285                 _lowest_note = 60;
 286                 _highest_note = 60;
 287         }
 288         redisplay_diskstream();
 289 }
 290
 291 void
 292 MidiStreamView::set_note_range(uint8_t lowest, uint8_t highest) {
 293         if(_range == ContentsRange) {
 294                 _lowest_note = lowest;
 295                 _highest_note = highest;
 296
 297                 list<RegionView *>::iterator i;
 298                 for (i = region_views.begin(); i != region_views.end(); ++i) {
 299                         (*i)->set_y_position_and_height(0, height); // apply note range
 300                 }
 301         }
 302
 303         draw_note_lines();
 304         NoteRangeChanged();
 305 }
 306
 307 void
 308 MidiStreamView::update_bounds(uint8_t note_num)
 309 {
 310         _lowest_note = min(_lowest_note, note_num);
 311         _highest_note = max(_highest_note, note_num);
 312 }
 313
 314
 315 void
 316 MidiStreamView::setup_rec_box ()
 317 {
 318         // cerr << _trackview.name() << " streamview SRB\n";
 319
 320         if (_trackview.session().transport_rolling()) {
 321
 322                 if (!rec_active &&
 323                     _trackview.session().record_status() == Session::Recording &&
 324                     _trackview.get_diskstream()->record_enabled()) {
 325
 326                         if (use_rec_regions && rec_regions.size() == rec_rects.size()) {
 327
 328                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 329
 330                                 MidiRegion::SourceList sources;
 331
 332                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 333                                         (*prc).disconnect();
 334                                 }
 335                                 rec_data_ready_connections.clear();
 336
 337                                 // FIXME
 338                                 boost::shared_ptr<MidiDiskstream> mds = boost::dynamic_pointer_cast<MidiDiskstream>(_trackview.get_diskstream());
 339                                 assert(mds);
 340
 341                                 sources.push_back(mds->write_source());
 342
 343                                 rec_data_ready_connections.push_back (mds->write_source()->ViewDataRangeReady.connect (bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), boost::weak_ptr<Source>(mds->write_source()))));
 344
 345                                 // handle multi
 346
 347                                 jack_nframes_t start = 0;
 348                                 if (rec_regions.size() > 0) {
 349                                         start = rec_regions.back().first->position() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 350                                 }
 351
 352                                 boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
 353                                         (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 354                                 assert(region);
 355                                 region->set_position (_trackview.session().transport_frame(), this);
 356                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 357
 358                                 // rec regions are destroyed in setup_rec_box
 359
 360                                 /* we add the region later */
 361                         }
 362
 363                         /* start a new rec box */
 364
 365                         boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
 366                         boost::shared_ptr<MidiDiskstream> ds = mt->midi_diskstream();
 367                         jack_nframes_t frame_pos = ds->current_capture_start ();
 368                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 369                         gdouble xend;
 370                         uint32_t fill_color;
 371
 372                         assert(_trackview.midi_track()->mode() == Normal);
 373
 374                         xend = xstart;
 375                         fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 376
 377                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 378                         rec_rect->property_x1() = xstart;
 379                         rec_rect->property_y1() = 1.0;
 380                         rec_rect->property_x2() = xend;
 381                         rec_rect->property_y2() = (double) _trackview.height - 1;
 382                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 383                         rec_rect->property_fill_color_rgba() = fill_color;
 384                         rec_rect->lower_to_bottom();
 385
 386                         RecBoxInfo recbox;
 387                         recbox.rectangle = rec_rect;
 388                         recbox.start = _trackview.session().transport_frame();
 389                         recbox.length = 0;
 390
 391                         rec_rects.push_back (recbox);
 392
 393                         screen_update_connection.disconnect();
 394                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &MidiStreamView::update_rec_box));
 395                         rec_updating = true;
 396                         rec_active = true;
 397
 398                 } else if (rec_active &&
 399                            (_trackview.session().record_status() != Session::Recording ||
 400                             !_trackview.get_diskstream()->record_enabled())) {
 401
 402                         screen_update_connection.disconnect();
 403                         rec_active = false;
 404                         rec_updating = false;
 405
 406                 }
 407
 408         } else {
 409
 410                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 411
 412                 if (!rec_rects.empty() || !rec_regions.empty()) {
 413
 414                         /* disconnect rapid update */
 415                         screen_update_connection.disconnect();
 416
 417                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 418                                 (*prc).disconnect();
 419                         }
 420                         rec_data_ready_connections.clear();
 421
 422                         rec_updating = false;
 423                         rec_active = false;
 424
 425                         /* remove temp regions */
 426
 427                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
 428                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 429
 430                                 tmp = iter;
 431                                 ++tmp;
 432
 433                                 (*iter).first->drop_references ();
 434
 435                                 iter = tmp;
 436                         }
 437
 438                         rec_regions.clear();
 439
 440                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 441
 442                         /* transport stopped, clear boxes */
 443                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 444                                 RecBoxInfo &rect = (*iter);
 445                                 delete rect.rectangle;
 446                         }
 447
 448                         rec_rects.clear();
 449
 450                 }
 451         }
 452 }
 453
 454 void
 455 MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t start, nframes_t dur)
 456 {
 457         ENSURE_GUI_THREAD (bind (mem_fun (*this, &MidiStreamView::update_rec_regions), data, start, dur));
 458
 459         if (use_rec_regions) {
 460
 461                 uint32_t n = 0;
 462                 bool     update_range = false;
 463
 464                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 465
 466                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 467
 468                         tmp = iter;
 469                         ++tmp;
 470
 471                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 472                                 /* rect already hidden, this region is done */
 473                                 iter = tmp;
 474                                 continue;
 475                         }
 476
 477                         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
 478                         if (!region) {
 479                                 continue;
 480                         }
 481
 482                         nframes_t origlen = region->length();
 483
 484                         if (region == rec_regions.back().first && rec_active) {
 485
 486                                 if (start >= region->midi_source(0)->timeline_position()) {
 487
 488                                         nframes_t nlen = start + dur - region->position();
 489
 490                                         if (nlen != region->length()) {
 491
 492                                                 region->freeze ();
 493                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 494                                                 region->set_length (start + dur - region->position(), this);
 495                                                 region->thaw ("updated");
 496
 497                                                 if (origlen == 1) {
 498                                                         /* our special initial length */
 499                                                         iter->second = add_region_view_internal (region, false);
 500                                                         ((MidiRegionView*)iter->second)->begin_write();
 501                                                 }
 502
 503                                                 /* also update rect */
 504                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 505                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 506                                                 rect->property_x2() = xend;
 507
 508                                                 /* draw events */
 509                                                 MidiRegionView* mrv = (MidiRegionView*)iter->second;
 510                                                 for (size_t i=0; i < data->n_notes(); ++i) {
 511
 512                                                         // FIXME: slooooooooow!
 513
 514                                                         const boost::shared_ptr<Note> note = data->note_at(i);
 515
 516                                                         if (note->duration() > 0 && note->end_time() + region->position() > start)
 517                                                                 mrv->resolve_note(note->note(), note->end_time());
 518
 519                                                         if (note->time() + region->position() < start)
 520                                                                 continue;
 521
 522                                                         if (note->time() + region->position() > start + dur)
 523                                                                 break;
 524
 525                                                         mrv->add_note(note);
 526
 527                                                         if (note->note() < _lowest_note) {
 528                                                                 _lowest_note = note->note();
 529                                                                 update_range = true;
 530                                                         } else if (note->note() > _highest_note) {
 531                                                                 _highest_note = note->note();
 532                                                                 update_range = true;
 533                                                         }
 534                                                 }
 535
 536                                                 mrv->extend_active_notes();
 537                                         }
 538                                 }
 539
 540                         } else {
 541
 542                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 543
 544                                 if (nlen != region->length()) {
 545
 546                                         if (region->source(0)->length() >= region->position() + nlen) {
 547
 548                                                 region->freeze ();
 549                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 550                                                 region->set_length (nlen, this);
 551                                                 region->thaw ("updated");
 552
 553                                                 if (origlen == 1) {
 554                                                         /* our special initial length */
 555                                                         iter->second = add_region_view_internal (region, false);
 556                                                 }
 557
 558                                                 /* also hide rect */
 559                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 560                                                 rect->hide();
 561
 562                                         }
 563                                 }
 564                         }
 565
 566                         iter = tmp;
 567                 }
 568
 569                 if (update_range)
 570                         update_contents_y_position_and_height();
 571         }
 572 }
 573
 574 void
 575 MidiStreamView::rec_data_range_ready (jack_nframes_t start, jack_nframes_t dur, boost::weak_ptr<Source> weak_src)
 576 {
 577         // this is called from the butler thread for now
 578
 579         ENSURE_GUI_THREAD(bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), start, dur, weak_src));
 580
 581         boost::shared_ptr<SMFSource> src (boost::dynamic_pointer_cast<SMFSource>(weak_src.lock()));
 582
 583         this->update_rec_regions (src->model(), start, dur);
 584 }
 585
 586 void
 587 MidiStreamView::color_handler ()
 588 {
 589
 590         //case cMidiTrackBase:
 591         if (_trackview.is_midi_track()) {
 592                 //canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 593         }
 594
 595         //case cMidiBusBase:
 596         if (!_trackview.is_midi_track()) {
 597                 //canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 598         }
 599 }
 600
 601 void
 602 MidiStreamView::note_range_adjustment_changed() {
 603         double sum = note_range_adjustment.get_value() + note_range_adjustment.get_page_size();
 604         int lowest = (int) floor(note_range_adjustment.get_value());
 605         int highest;
 606
 607         if(sum == _range_sum_cache) {
 608                 //cerr << "cached" << endl;
 609                 highest = (int) floor(sum);
 610         }
 611         else {
 612                 //cerr << "recalc" << endl;
 613                 highest = lowest + (int) floor(note_range_adjustment.get_page_size());
 614                 _range_sum_cache = sum;
 615         }
 616
 617         if(lowest == lowest_note() && highest == highest_note()) {
 618                 return;
 619         }
 620
 621         //cerr << "note range changed: " << lowest << " " << highest << endl;
 622         //cerr << "  val=" << v_zoom_adjustment.get_value() << " page=" << v_zoom_adjustment.get_page_size() << " sum=" << v_zoom_adjustment.get_value() + v_zoom_adjustment.get_page_size() << endl;
 623
 624         set_note_range(lowest, highest);
 625 }