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