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
  50 using namespace std;
  51 using namespace ARDOUR;
  52 using namespace PBD;
  53 using namespace Editing;
  54
  55 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
  56         : StreamView (tv)
  57         , _range(ContentsRange)
  58         , _lowest_note(60)
  59         , _highest_note(60)
  60 {
  61         if (tv.is_track())
  62                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
  63         else
  64                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();
  65
  66         canvas_rect->property_fill_color_rgba() = stream_base_color;
  67         canvas_rect->property_outline_color_rgba() = RGBA_BLACK;
  68
  69         use_rec_regions = tv.editor.show_waveforms_recording ();
  70 }
  71
  72 MidiStreamView::~MidiStreamView ()
  73 {
  74 }
  75
  76
  77 RegionView*
  78 MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd)
  79 {
  80         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
  81
  82         if (region == 0) {
  83                 return NULL;
  84         }
  85
  86         MidiRegionView *region_view;
  87         list<RegionView *>::iterator i;
  88
  89         for (i = region_views.begin(); i != region_views.end(); ++i) {
  90                 if ((*i)->region() == r) {
  91
  92                         /* great. we already have a MidiRegionView for this Region. use it again. */
  93
  94                         (*i)->set_valid (true);
  95                         (*i)->enable_display(wfd);
  96                         display_region(dynamic_cast<MidiRegionView*>(*i), wfd);
  97
  98                         return NULL;
  99                 }
 100         }
 101
 102         region_view = new MidiRegionView (canvas_group, _trackview, region,
 103                         _samples_per_unit, region_color);
 104
 105         region_view->init (region_color, false);
 106         region_views.push_front (region_view);
 107
 108         /* follow global waveform setting */
 109
 110         if (wfd) {
 111                 region_view->enable_display(true);
 112                 region_view->midi_region()->midi_source(0)->load_model();
 113         }
 114
 115         /* display events and find note range */
 116         display_region(region_view, wfd);
 117
 118         /* always display at least 1 octave range */
 119         _highest_note = max(_highest_note, static_cast<uint8_t>(_lowest_note + 11));
 120
 121         /* catch regionview going away */
 122         region->GoingAway.connect (bind (mem_fun (*this, &MidiStreamView::remove_region_view), region));
 123
 124         RegionViewAdded (region_view);
 125
 126         return region_view;
 127 }
 128
 129 void
 130 MidiStreamView::display_region(MidiRegionView* region_view, bool load_model)
 131 {
 132         if ( ! region_view)
 133                 return;
 134
 135         boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
 136
 137         if (load_model)
 138                 source->load_model();
 139
 140         if (source->model()) {
 141                 // Find our note range
 142                 for (size_t i=0; i < source->model()->n_notes(); ++i) {
 143                         const MidiModel::Note& note = source->model()->note_at(i);
 144                         update_bounds(note.note());
 145                 }
 146         }
 147
 148         // Display region contents
 149         region_view->display_model(source->model());
 150 }
 151
 152 // FIXME: code duplication with AudioStreamView
 153 void
 154 MidiStreamView::redisplay_diskstream ()
 155 {
 156         list<RegionView *>::iterator i, tmp;
 157
 158         for (i = region_views.begin(); i != region_views.end(); ++i) {
 159                 (*i)->enable_display(true); // FIXME: double display
 160                 (*i)->set_valid (false);
 161
 162                 /* FIXME: slow.  MidiRegionView needs a find_note_range method
 163                  * that finds the range without wasting time drawing the events */
 164
 165                 // Load model if it isn't already, to get note range
 166                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
 167                 mrv->midi_region()->midi_source(0)->load_model();
 168         }
 169
 170         //_lowest_note = 60; // middle C
 171         //_highest_note = _lowest_note + 11;
 172
 173         if (_trackview.is_midi_track()) {
 174                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 175         }
 176
 177         for (i = region_views.begin(); i != region_views.end(); ) {
 178                 tmp = i;
 179                 tmp++;
 180
 181                 if (!(*i)->is_valid()) {
 182                         delete *i;
 183                         region_views.erase (i);
 184                 } else {
 185                         (*i)->enable_display(true);
 186                         (*i)->set_y_position_and_height(0, height); // apply note range
 187                 }
 188
 189                 i = tmp;
 190         }
 191
 192         /* now fix layering */
 193
 194         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 195                 region_layered (*i);
 196         }
 197 }
 198
 199 void
 200 MidiStreamView::update_bounds(uint8_t note_num)
 201 {
 202         _lowest_note = min(_lowest_note, note_num);
 203         _highest_note = max(_highest_note, note_num);
 204 }
 205
 206
 207 void
 208 MidiStreamView::setup_rec_box ()
 209 {
 210         // cerr << _trackview.name() << " streamview SRB\n";
 211
 212         if (_trackview.session().transport_rolling()) {
 213
 214                 if (!rec_active &&
 215                     _trackview.session().record_status() == Session::Recording &&
 216                     _trackview.get_diskstream()->record_enabled()) {
 217
 218                         if (use_rec_regions && rec_regions.size() == rec_rects.size()) {
 219
 220                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 221
 222                                 MidiRegion::SourceList sources;
 223
 224                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 225                                         (*prc).disconnect();
 226                                 }
 227                                 rec_data_ready_connections.clear();
 228
 229                                 // FIXME
 230                                 boost::shared_ptr<MidiDiskstream> mds = boost::dynamic_pointer_cast<MidiDiskstream>(_trackview.get_diskstream());
 231                                 assert(mds);
 232
 233                                 sources.push_back(mds->write_source());
 234
 235                                 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()))));
 236
 237                                 // handle multi
 238
 239                                 jack_nframes_t start = 0;
 240                                 if (rec_regions.size() > 0) {
 241                                         start = rec_regions.back().first->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 242                                 }
 243
 244                                 boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
 245                                         (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 246                                 assert(region);
 247                                 region->set_position (_trackview.session().transport_frame(), this);
 248                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 249
 250                                 // rec regions are destroyed in setup_rec_box
 251
 252                                 /* we add the region later */
 253                         }
 254
 255                         /* start a new rec box */
 256
 257                         boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
 258                         boost::shared_ptr<MidiDiskstream> ds = mt->midi_diskstream();
 259                         jack_nframes_t frame_pos = ds->current_capture_start ();
 260                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 261                         gdouble xend;
 262                         uint32_t fill_color;
 263
 264                         assert(_trackview.midi_track()->mode() == Normal);
 265
 266                         xend = xstart;
 267                         fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 268
 269                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 270                         rec_rect->property_x1() = xstart;
 271                         rec_rect->property_y1() = 1.0;
 272                         rec_rect->property_x2() = xend;
 273                         rec_rect->property_y2() = (double) _trackview.height - 1;
 274                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 275                         rec_rect->property_fill_color_rgba() = fill_color;
 276                         rec_rect->lower_to_bottom();
 277
 278                         RecBoxInfo recbox;
 279                         recbox.rectangle = rec_rect;
 280                         recbox.start = _trackview.session().transport_frame();
 281                         recbox.length = 0;
 282
 283                         rec_rects.push_back (recbox);
 284
 285                         screen_update_connection.disconnect();
 286                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &MidiStreamView::update_rec_box));
 287                         rec_updating = true;
 288                         rec_active = true;
 289
 290                 } else if (rec_active &&
 291                            (_trackview.session().record_status() != Session::Recording ||
 292                             !_trackview.get_diskstream()->record_enabled())) {
 293
 294                         screen_update_connection.disconnect();
 295                         rec_active = false;
 296                         rec_updating = false;
 297
 298                 }
 299
 300         } else {
 301
 302                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 303
 304                 if (!rec_rects.empty() || !rec_regions.empty()) {
 305
 306                         /* disconnect rapid update */
 307                         screen_update_connection.disconnect();
 308
 309                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 310                                 (*prc).disconnect();
 311                         }
 312                         rec_data_ready_connections.clear();
 313
 314                         rec_updating = false;
 315                         rec_active = false;
 316
 317                         /* remove temp regions */
 318
 319                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
 320                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 321
 322                                 tmp = iter;
 323                                 ++tmp;
 324
 325                                 (*iter).first->drop_references ();
 326
 327                                 iter = tmp;
 328                         }
 329
 330                         rec_regions.clear();
 331
 332                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 333
 334                         /* transport stopped, clear boxes */
 335                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 336                                 RecBoxInfo &rect = (*iter);
 337                                 delete rect.rectangle;
 338                         }
 339
 340                         rec_rects.clear();
 341
 342                 }
 343         }
 344 }
 345
 346 void
 347 MidiStreamView::update_rec_regions (boost::shared_ptr<MidiBuffer> data, nframes_t start, nframes_t dur)
 348 {
 349         ENSURE_GUI_THREAD (bind (mem_fun (*this, &MidiStreamView::update_rec_regions), data, start, dur));
 350
 351         if (use_rec_regions) {
 352
 353                 uint32_t n = 0;
 354
 355                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 356
 357                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 358
 359                         tmp = iter;
 360                         ++tmp;
 361
 362                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 363                                 /* rect already hidden, this region is done */
 364                                 iter = tmp;
 365                                 continue;
 366                         }
 367
 368                         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
 369                         if (!region) {
 370                                 continue;
 371                         }
 372
 373                         nframes_t origlen = region->length();
 374
 375                         //cerr << "MIDI URR: " << start << " * " << dur
 376                         //      << " (origlen " << origlen << ")" << endl;
 377
 378                         if (region == rec_regions.back().first && rec_active) {
 379
 380                                 if (start >= region->start()) {
 381
 382                                         nframes_t nlen = start + dur - region->start();
 383
 384                                         if (nlen != region->length()) {
 385
 386                                                 region->freeze ();
 387                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 388                                                 region->set_length (nlen, this);
 389                                                 region->thaw ("updated");
 390
 391                                                 if (origlen == 1) {
 392                                                         /* our special initial length */
 393                                                         iter->second = add_region_view_internal (region, false);
 394                                                         ((MidiRegionView*)iter->second)->begin_write();
 395                                                 }
 396
 397                                                 /* also update rect */
 398                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 399                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 400                                                 rect->property_x2() = xend;
 401
 402                                                 /* draw events */
 403                                                 MidiRegionView* mrv = (MidiRegionView*)iter->second;
 404                                                 for (MidiBuffer::iterator i = data->begin(); i != data->end(); ++i) {
 405                                                         const MidiEvent& ev = *i;
 406                                                         mrv->add_event(ev);
 407                                                         mrv->extend_active_notes();
 408                                                 }
 409
 410                                         }
 411                                 }
 412
 413                         } else {
 414
 415                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 416
 417                                 if (nlen != region->length()) {
 418
 419                                         if (region->source(0)->length() >= region->start() + nlen) {
 420
 421                                                 region->freeze ();
 422                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 423                                                 region->set_length (nlen, this);
 424                                                 region->thaw ("updated");
 425
 426                                                 if (origlen == 1) {
 427                                                         /* our special initial length */
 428                                                         iter->second = add_region_view_internal (region, false);
 429                                                 }
 430
 431                                                 /* also hide rect */
 432                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 433                                                 rect->hide();
 434
 435                                         }
 436                                 }
 437                         }
 438
 439                         iter = tmp;
 440                 }
 441         }
 442 }
 443
 444 void
 445 MidiStreamView::rec_data_range_ready (boost::shared_ptr<MidiBuffer> data, jack_nframes_t start, jack_nframes_t dur, boost::weak_ptr<Source> weak_src)
 446 {
 447         // this is called from the butler thread for now
 448
 449         ENSURE_GUI_THREAD(bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), data, start, dur, weak_src));
 450
 451         boost::shared_ptr<SMFSource> src (boost::dynamic_pointer_cast<SMFSource>(weak_src.lock()));
 452
 453         //cerr << src.get() << " MIDI READY: " << start << " * " << dur
 454         //      << " -- " << data->size() << " events!" << endl;
 455
 456         this->update_rec_regions (data, start, dur);
 457 }
 458
 459 void
 460 MidiStreamView::color_handler ()
 461 {
 462
 463         //case cMidiTrackBase:
 464         if (_trackview.is_midi_track()) {
 465                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 466         }
 467
 468         //case cMidiBusBase:
 469         if (!_trackview.is_midi_track()) {
 470                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 471         }
 472 }
 473