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_diskstream.h"
  28 #include "ardour/midi_playlist.h"
  29 #include "ardour/midi_region.h"
  30 #include "ardour/midi_source.h"
  31 #include "ardour/midi_track.h"
  32 #include "ardour/region_factory.h"
  33 #include "ardour/smf_source.h"
  34 #include "ardour/session.h"
  35
  36 #include "ardour_ui.h"
  37 #include "canvas-simplerect.h"
  38 #include "global_signals.h"
  39 #include "gui_thread.h"
  40 #include "lineset.h"
  41 #include "midi_region_view.h"
  42 #include "midi_streamview.h"
  43 #include "midi_time_axis.h"
  44 #include "midi_util.h"
  45 #include "public_editor.h"
  46 #include "region_selection.h"
  47 #include "region_view.h"
  48 #include "rgb_macros.h"
  49 #include "selection.h"
  50 #include "simplerect.h"
  51 #include "utils.h"
  52
  53 using namespace std;
  54 using namespace ARDOUR;
  55 using namespace PBD;
  56 using namespace Editing;
  57
  58 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
  59         : StreamView (tv)
  60         , note_range_adjustment(0.0f, 0.0f, 0.0f)
  61         , _range_dirty(false)
  62         , _range_sum_cache(-1.0)
  63         , _lowest_note(60)
  64         , _highest_note(71)
  65         , _data_note_min(60)
  66         , _data_note_max(71)
  67         , _note_lines (0)
  68 {
  69         /* use a group dedicated to MIDI underlays. Audio underlays are not in this group. */
  70         midi_underlay_group = new ArdourCanvas::Group (*_canvas_group);
  71         midi_underlay_group->lower_to_bottom();
  72
  73         /* put the note lines in the timeaxisview's group, so it
  74            can be put below ghost regions from MIDI underlays*/
  75         _note_lines = new ArdourCanvas::LineSet(*_canvas_group, ArdourCanvas::LineSet::Horizontal);
  76
  77         _note_lines->property_x1() = 0;
  78         _note_lines->property_y1() = 0;
  79         _note_lines->property_x2() = DBL_MAX;
  80         _note_lines->property_y2() = 0;
  81
  82         _note_lines->signal_event().connect(sigc::bind(
  83                         sigc::mem_fun(_trackview.editor(), &PublicEditor::canvas_stream_view_event),
  84                         _note_lines, &_trackview));
  85
  86         _note_lines->lower_to_bottom();
  87
  88         color_handler ();
  89
  90         ColorsChanged.connect(sigc::mem_fun(*this, &MidiStreamView::color_handler));
  91
  92         note_range_adjustment.set_page_size(_highest_note - _lowest_note);
  93         note_range_adjustment.set_value(_lowest_note);
  94
  95         note_range_adjustment.signal_value_changed().connect(
  96                         sigc::mem_fun(*this, &MidiStreamView::note_range_adjustment_changed));
  97 }
  98
  99 MidiStreamView::~MidiStreamView ()
 100 {
 101 }
 102
 103 static void
 104 veto_note_range(uint8_t& min, uint8_t& max)
 105 {
 106         /* Legal notes, thanks */
 107         clamp_to_0_127(min);
 108         clamp_to_0_127(max);
 109
 110         /* Always display at least one octave in [0, 127] */
 111         if (max == 127) {
 112                 if (min > (127 - 11)) {
 113                         min = 127 - 11;
 114                 }
 115         } else if (max < min + 11) {
 116                 uint8_t d = 11 - (max - min);
 117                 if (max + d/2 > 127) {
 118                         min -= d;
 119                 } else {
 120                         min -= d / 2;
 121                         max += d / 2;
 122                 }
 123         }
 124         assert(max - min >= 11);
 125         assert(max <= 127);
 126         assert(min <= 127);
 127 }
 128
 129 RegionView*
 130 MidiStreamView::create_region_view (boost::shared_ptr<Region> r, bool /*wfd*/, bool)
 131 {
 132         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
 133
 134         if (region == 0) {
 135                 return 0;
 136         }
 137
 138         RegionView* region_view = new MidiRegionView (_canvas_group, _trackview, region,
 139                                                       _samples_per_unit, region_color);
 140
 141         region_view->init (region_color, false);
 142
 143         return region_view;
 144 }
 145
 146 RegionView*
 147 MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd, bool recording)
 148 {
 149         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
 150
 151         if (region == 0) {
 152                 return 0;
 153         }
 154
 155         for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 156                 if ((*i)->region() == r) {
 157
 158                         /* great. we already have a MidiRegionView for this Region. use it again. */
 159
 160                         (*i)->set_valid (true);
 161
 162                         display_region(dynamic_cast<MidiRegionView*>(*i), wfd);
 163
 164                         return 0;
 165                 }
 166         }
 167
 168         MidiRegionView* region_view = dynamic_cast<MidiRegionView*> (create_region_view (r, wfd, recording));
 169         if (region_view == 0) {
 170                 return 0;
 171         }
 172
 173         region_views.push_front (region_view);
 174
 175         /* display events and find note range */
 176         display_region (region_view, wfd);
 177
 178         /* catch regionview going away */
 179         region->DropReferences.connect (*this, invalidator (*this), boost::bind (&MidiStreamView::remove_region_view, this, region), gui_context());
 180
 181         RegionViewAdded (region_view);
 182
 183         return region_view;
 184 }
 185
 186 void
 187 MidiStreamView::display_region(MidiRegionView* region_view, bool load_model)
 188 {
 189         if ( ! region_view)
 190                 return;
 191
 192         region_view->enable_display(true);
 193
 194         boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
 195
 196         if (load_model) {
 197                 source->load_model();
 198         }
 199
 200         _range_dirty = update_data_note_range(
 201                         source->model()->lowest_note(),
 202                         source->model()->highest_note());
 203
 204         // Display region contents
 205         region_view->set_height (child_height());
 206         region_view->display_model(source->model());
 207 }
 208
 209 void
 210 MidiStreamView::display_track (boost::shared_ptr<Track> tr)
 211 {
 212         StreamView::display_track (tr);
 213
 214         draw_note_lines();
 215
 216         NoteRangeChanged();
 217 }
 218
 219 void
 220 MidiStreamView::update_contents_metrics(boost::shared_ptr<Region> r)
 221 {
 222         boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(r);
 223         if (mr) {
 224                 mr->midi_source(0)->load_model();
 225                 _range_dirty = update_data_note_range(
 226                                 mr->model()->lowest_note(),
 227                                 mr->model()->highest_note());
 228         }
 229 }
 230
 231 bool
 232 MidiStreamView::update_data_note_range(uint8_t min, uint8_t max)
 233 {
 234         bool dirty = false;
 235         if (min < _data_note_min) {
 236                 _data_note_min = min;
 237                 dirty = true;
 238         }
 239         if (max > _data_note_max) {
 240                 _data_note_max = max;
 241                 dirty = true;
 242         }
 243         return dirty;
 244 }
 245
 246 void
 247 MidiStreamView::redisplay_track ()
 248 {
 249         if (!_trackview.is_midi_track()) {
 250                 return;
 251         }
 252
 253         list<RegionView*>::iterator i;
 254
 255         // Load models if necessary, and find note range of all our contents
 256         _range_dirty = false;
 257         _data_note_min = 127;
 258         _data_note_max = 0;
 259         _trackview.track()->playlist()->foreach_region(
 260                 sigc::mem_fun (*this, &StreamView::update_contents_metrics)
 261                 );
 262
 263         // No notes, use default range
 264         if (!_range_dirty) {
 265                 _data_note_min = 60;
 266                 _data_note_max = 71;
 267         }
 268
 269         // Extend visible range to show newly recorded data, if necessary
 270         _lowest_note  = std::min(_lowest_note, _data_note_min);
 271         _highest_note = std::max(_highest_note, _data_note_max);
 272
 273         veto_note_range(_lowest_note, _highest_note);
 274
 275         // Flag region views as invalid and disable drawing
 276         for (i = region_views.begin(); i != region_views.end(); ++i) {
 277                 (*i)->set_valid(false);
 278                 (*i)->enable_display(false);
 279         }
 280
 281         // Add and display region views, and flag them as valid
 282         _trackview.track()->playlist()->foreach_region(
 283                 sigc::hide_return (sigc::mem_fun (*this, &StreamView::add_region_view))
 284                 );
 285
 286         // Stack regions by layer, and remove invalid regions
 287         layer_regions();
 288
 289         // Update note range (not regions which are correct) and draw note lines
 290         apply_note_range(_lowest_note, _highest_note, false);
 291 }
 292
 293
 294 void
 295 MidiStreamView::update_contents_height ()
 296 {
 297         StreamView::update_contents_height();
 298         _note_lines->property_y2() = child_height ();
 299
 300         apply_note_range (lowest_note(), highest_note(), true);
 301 }
 302
 303 void
 304 MidiStreamView::draw_note_lines()
 305 {
 306         if (!_note_lines) {
 307                 return;
 308         }
 309
 310         double y;
 311         double prev_y = contents_height();
 312         uint32_t color;
 313
 314         _note_lines->clear();
 315
 316         if (child_height() < 140){
 317                 return;
 318         }
 319
 320         for (int i = lowest_note(); i <= highest_note(); ++i) {
 321                 y = floor(note_to_y(i));
 322
 323                 _note_lines->add_line(prev_y, 1.0, ARDOUR_UI::config()->canvasvar_PianoRollBlackOutline.get());
 324
 325                 switch (i % 12) {
 326                 case 1:
 327                 case 3:
 328                 case 6:
 329                 case 8:
 330                 case 10:
 331                         color = ARDOUR_UI::config()->canvasvar_PianoRollBlack.get();
 332                         break;
 333                 default:
 334                         color = ARDOUR_UI::config()->canvasvar_PianoRollWhite.get();
 335                         break;
 336                 }
 337
 338                 if (i == highest_note()) {
 339                         _note_lines->add_line(y, prev_y - y, color);
 340                 } else {
 341                         _note_lines->add_line(y + 1.0, prev_y - y - 1.0, color);
 342                 }
 343
 344                 prev_y = y;
 345         }
 346 }
 347
 348 void
 349 MidiStreamView::set_note_range(VisibleNoteRange r)
 350 {
 351         if (r == FullRange) {
 352                 _lowest_note = 0;
 353                 _highest_note = 127;
 354         } else {
 355                 _lowest_note = _data_note_min;
 356                 _highest_note = _data_note_max;
 357         }
 358
 359         apply_note_range(_lowest_note, _highest_note, true);
 360 }
 361
 362 void
 363 MidiStreamView::apply_note_range(uint8_t lowest, uint8_t highest, bool to_region_views)
 364 {
 365         _highest_note = highest;
 366         _lowest_note = lowest;
 367
 368         int const range = _highest_note - _lowest_note;
 369         int const pixels_per_note = floor (child_height () / range);
 370
 371         /* do not grow note height beyond 10 pixels */
 372         if (pixels_per_note > 10) {
 373
 374                 int const available_note_range = floor (child_height() / 10);
 375                 int additional_notes = available_note_range - range;
 376
 377                 /* distribute additional notes to higher and lower ranges, clamp at 0 and 127 */
 378                 for (int i = 0; i < additional_notes; i++){
 379
 380                         if (i % 2 && _highest_note < 127){
 381                                 _highest_note++;
 382                         }
 383                         else if (i % 2) {
 384                                 _lowest_note--;
 385                         }
 386                         else if (_lowest_note > 0){
 387                                 _lowest_note--;
 388                         }
 389                         else {
 390                                 _highest_note++;
 391                         }
 392                 }
 393         }
 394
 395         note_range_adjustment.set_page_size(_highest_note - _lowest_note);
 396         note_range_adjustment.set_value(_lowest_note);
 397
 398         draw_note_lines();
 399
 400         if (to_region_views) {
 401                 for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 402                         ((MidiRegionView*)(*i))->apply_note_range(_lowest_note, _highest_note);
 403                 }
 404         }
 405
 406         NoteRangeChanged();
 407 }
 408
 409 void
 410 MidiStreamView::update_note_range(uint8_t note_num)
 411 {
 412         assert(note_num <= 127);
 413         _data_note_min = min(_data_note_min, note_num);
 414         _data_note_max = max(_data_note_max, note_num);
 415 }
 416
 417 void
 418 MidiStreamView::setup_rec_box ()
 419 {
 420         // cerr << _trackview.name() << " streamview SRB\n";
 421
 422         if (_trackview.session()->transport_rolling()) {
 423
 424                 if (!rec_active &&
 425                     _trackview.session()->record_status() == Session::Recording &&
 426                     _trackview.track()->record_enabled()) {
 427
 428                         if (Config->get_show_waveforms_while_recording() && rec_regions.size() == rec_rects.size()) {
 429
 430                                 /* add a new region, but don't bother if they set show-waveforms-while-recording mid-record */
 431
 432                                 MidiRegion::SourceList sources;
 433
 434                                 rec_data_ready_connections.drop_connections ();
 435
 436                                 sources.push_back (_trackview.midi_track()->write_source());
 437
 438                                 // handle multi
 439
 440                                 framepos_t start = 0;
 441                                 if (rec_regions.size() > 0) {
 442                                         start = rec_regions.back().first->start()
 443                                                         + _trackview.track()->get_captured_frames(rec_regions.size()-1);
 444                                 }
 445
 446                                 if (!rec_regions.empty()) {
 447                                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (rec_regions.back().second);
 448                                         mrv->end_write ();
 449                                 }
 450
 451                                 PropertyList plist;
 452
 453                                 plist.add (ARDOUR::Properties::start, start);
 454                                 plist.add (ARDOUR::Properties::length, 1);
 455                                 plist.add (ARDOUR::Properties::name, string());
 456                                 plist.add (ARDOUR::Properties::layer, 0);
 457
 458                                 boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
 459                                                                       (RegionFactory::create (sources, plist, false)));
 460
 461                                 assert(region);
 462                                 region->set_start (_trackview.track()->current_capture_start() - _trackview.track()->get_capture_start_frame (0), this);
 463                                 region->set_position (_trackview.track()->current_capture_start(), this);
 464                                 RegionView* rv = add_region_view_internal (region, false);
 465                                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (rv);
 466                                 mrv->begin_write ();
 467
 468                                 rec_regions.push_back (make_pair (region, rv));
 469
 470                                 // rec regions are destroyed in setup_rec_box
 471
 472                                 /* we add the region later */
 473
 474                                 setup_new_rec_layer_time (region);
 475                         }
 476
 477                         /* start a new rec box */
 478
 479                         boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
 480                         framepos_t const frame_pos = mt->current_capture_start ();
 481                         gdouble const xstart = _trackview.editor().frame_to_pixel (frame_pos);
 482                         gdouble const xend = xstart;
 483                         uint32_t fill_color;
 484
 485                         assert(_trackview.midi_track()->mode() == Normal);
 486
 487                         fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 488
 489                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*_canvas_group);
 490                         rec_rect->property_x1() = xstart;
 491                         rec_rect->property_y1() = 1.0;
 492                         rec_rect->property_x2() = xend;
 493                         rec_rect->property_y2() = (double) _trackview.current_height() - 1;
 494                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 495                         rec_rect->property_fill_color_rgba() = fill_color;
 496                         rec_rect->lower_to_bottom();
 497
 498                         RecBoxInfo recbox;
 499                         recbox.rectangle = rec_rect;
 500                         recbox.start = _trackview.session()->transport_frame();
 501                         recbox.length = 0;
 502
 503                         rec_rects.push_back (recbox);
 504
 505                         screen_update_connection.disconnect();
 506                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (
 507                                         sigc::mem_fun (*this, &MidiStreamView::update_rec_box));
 508                         rec_updating = true;
 509                         rec_active = true;
 510
 511                 } else if (rec_active &&
 512                            (_trackview.session()->record_status() != Session::Recording ||
 513                             !_trackview.track()->record_enabled())) {
 514                         screen_update_connection.disconnect();
 515                         rec_active = false;
 516                         rec_updating = false;
 517                 }
 518
 519         } else {
 520
 521                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 522
 523                 if (!rec_rects.empty() || !rec_regions.empty()) {
 524
 525                         /* disconnect rapid update */
 526                         screen_update_connection.disconnect();
 527                         rec_data_ready_connections.drop_connections ();
 528
 529                         rec_updating = false;
 530                         rec_active = false;
 531
 532                         /* remove temp regions */
 533
 534                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
 535                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 536
 537                                 tmp = iter;
 538                                 ++tmp;
 539
 540                                 (*iter).first->drop_references ();
 541
 542                                 iter = tmp;
 543                         }
 544
 545                         rec_regions.clear();
 546
 547                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 548
 549                         /* transport stopped, clear boxes */
 550                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 551                                 RecBoxInfo &rect = (*iter);
 552                                 delete rect.rectangle;
 553                         }
 554
 555                         rec_rects.clear();
 556
 557                 }
 558         }
 559 }
 560
 561 void
 562 MidiStreamView::color_handler ()
 563 {
 564         draw_note_lines ();
 565
 566         if (_trackview.is_midi_track()) {
 567                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 568         } else {
 569                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 570         }
 571 }
 572
 573 void
 574 MidiStreamView::note_range_adjustment_changed()
 575 {
 576         double sum = note_range_adjustment.get_value() + note_range_adjustment.get_page_size();
 577         int lowest = (int) floor(note_range_adjustment.get_value());
 578         int highest;
 579
 580         if (sum == _range_sum_cache) {
 581                 //cerr << "cached" << endl;
 582                 highest = (int) floor(sum);
 583         } else {
 584                 //cerr << "recalc" << endl;
 585                 highest = lowest + (int) floor(note_range_adjustment.get_page_size());
 586                 _range_sum_cache = sum;
 587         }
 588
 589         if (lowest == _lowest_note && highest == _highest_note) {
 590                 return;
 591         }
 592
 593         //cerr << "note range adjustment changed: " << lowest << " " << highest << endl;
 594         //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;
 595
 596         _lowest_note = lowest;
 597         _highest_note = highest;
 598         apply_note_range(lowest, highest, true);
 599 }
 600
 601 void
 602 MidiStreamView::update_rec_box ()
 603 {
 604         StreamView::update_rec_box ();
 605
 606         if (rec_regions.empty()) {
 607                 return;
 608         }
 609
 610         /* Update the region being recorded to reflect where we currently are */
 611         boost::shared_ptr<ARDOUR::Region> region = rec_regions.back().first;
 612         region->set_length (_trackview.track()->current_capture_end () - _trackview.track()->current_capture_start(), this);
 613
 614         MidiRegionView* mrv = dynamic_cast<MidiRegionView*> (rec_regions.back().second);
 615         mrv->extend_active_notes ();
 616 }
 617