gtk2_ardour/midi_streamview.cc

   1 /*
   2     Copyright (C) 2001, 2006 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <cmath>
  20 #include <cassert>
  21 #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/smf_source.h>
  33 #include <ardour/region_factory.h>
  34
  35 #include "midi_streamview.h"
  36 #include "region_view.h"
  37 #include "midi_region_view.h"
  38 #include "midi_time_axis.h"
  39 #include "canvas-simplerect.h"
  40 #include "region_selection.h"
  41 #include "selection.h"
  42 #include "public_editor.h"
  43 #include "ardour_ui.h"
  44 #include "rgb_macros.h"
  45 #include "gui_thread.h"
  46 #include "utils.h"
  47 #include "simplerect.h"
  48
  49 using namespace std;
  50 using namespace ARDOUR;
  51 using namespace PBD;
  52 using namespace Editing;
  53
  54 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
  55         : StreamView (tv)
  56 {
  57         if (tv.is_track())
  58                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
  59         else
  60                 stream_base_color = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();
  61
  62         canvas_rect->property_fill_color_rgba() = stream_base_color;
  63         canvas_rect->property_outline_color_rgba() = RGBA_BLACK;
  64
  65         //use_rec_regions = tv.editor.show_waveforms_recording ();
  66         use_rec_regions = true;
  67 }
  68
  69 MidiStreamView::~MidiStreamView ()
  70 {
  71 }
  72
  73
  74 RegionView*
  75 MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves)
  76 {
  77         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
  78
  79         if (region == 0) {
  80                 return NULL;
  81         }
  82
  83         MidiRegionView *region_view;
  84         list<RegionView *>::iterator i;
  85
  86         for (i = region_views.begin(); i != region_views.end(); ++i) {
  87                 if ((*i)->region() == r) {
  88
  89                         /* great. we already have a MidiRegionView for this Region. use it again. */
  90
  91                         (*i)->set_valid (true);
  92                         return NULL;
  93                 }
  94         }
  95
  96         // can't we all just get along?
  97         assert(_trackview.midi_track()->mode() != Destructive);
  98
  99         region_view = new MidiRegionView (canvas_group, _trackview, region,
 100                         _samples_per_unit, region_color);
 101
 102         region_view->init (region_color, wait_for_waves);
 103         region_views.push_front (region_view);
 104
 105         /* follow global waveform setting */
 106
 107         // FIXME
 108         //region_view->set_waveform_visible(_trackview.editor.show_waveforms());
 109
 110         /* display events */
 111         region_view->begin_write();
 112         for (size_t i=0; i < region->midi_source(0)->model()->n_events(); ++i)
 113                 region_view->add_event(region->midi_source(0)->model()->event_at(i));
 114         region_view->end_write();
 115
 116         /* catch regionview going away */
 117         region->GoingAway.connect (bind (mem_fun (*this, &MidiStreamView::remove_region_view), region));
 118
 119         RegionViewAdded (region_view);
 120
 121         return region_view;
 122 }
 123
 124 // FIXME: code duplication with AudioStreamVIew
 125 void
 126 MidiStreamView::redisplay_diskstream ()
 127 {
 128         list<RegionView *>::iterator i, tmp;
 129
 130         for (i = region_views.begin(); i != region_views.end(); ++i) {
 131                 (*i)->set_valid (false);
 132         }
 133
 134         if (_trackview.is_midi_track()) {
 135                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 136         }
 137
 138         for (i = region_views.begin(); i != region_views.end(); ) {
 139                 tmp = i;
 140                 tmp++;
 141
 142                 if (!(*i)->is_valid()) {
 143                         delete *i;
 144                         region_views.erase (i);
 145                 }
 146
 147                 i = tmp;
 148         }
 149
 150         /* now fix layering */
 151
 152         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 153                 region_layered (*i);
 154         }
 155 }
 156
 157
 158 void
 159 MidiStreamView::setup_rec_box ()
 160 {
 161         // cerr << _trackview.name() << " streamview SRB\n";
 162
 163         if (_trackview.session().transport_rolling()) {
 164
 165                 if (!rec_active &&
 166                     _trackview.session().record_status() == Session::Recording &&
 167                     _trackview.get_diskstream()->record_enabled()) {
 168
 169                         if (use_rec_regions && rec_regions.size() == rec_rects.size()) {
 170
 171                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 172
 173                                 MidiRegion::SourceList sources;
 174
 175                                 for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 176                                         (*prc).disconnect();
 177                                 }
 178                                 rec_data_ready_connections.clear();
 179
 180                                 // FIXME
 181                                 boost::shared_ptr<MidiDiskstream> mds = boost::dynamic_pointer_cast<MidiDiskstream>(_trackview.get_diskstream());
 182                                 assert(mds);
 183
 184                                 sources.push_back(mds->write_source());
 185
 186                                 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()))));
 187
 188                                 // handle multi
 189
 190                                 jack_nframes_t start = 0;
 191                                 if (rec_regions.size() > 0) {
 192                                         start = rec_regions.back().first->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 193                                 }
 194
 195                                 boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
 196                                         (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 197                                 assert(region);
 198                                 region->set_position (_trackview.session().transport_frame(), this);
 199                                 rec_regions.push_back (make_pair(region, (RegionView*)0));
 200
 201                                 // rec regions are destroyed in setup_rec_box
 202
 203                                 /* we add the region later */
 204                         }
 205
 206                         /* start a new rec box */
 207
 208                         boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
 209                         boost::shared_ptr<MidiDiskstream> ds = mt->midi_diskstream();
 210                         jack_nframes_t frame_pos = ds->current_capture_start ();
 211                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 212                         gdouble xend;
 213                         uint32_t fill_color;
 214
 215                         assert(_trackview.midi_track()->mode() == Normal);
 216
 217                         xend = xstart;
 218                         fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 219
 220                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 221                         rec_rect->property_x1() = xstart;
 222                         rec_rect->property_y1() = 1.0;
 223                         rec_rect->property_x2() = xend;
 224                         rec_rect->property_y2() = (double) _trackview.height - 1;
 225                         rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 226                         rec_rect->property_fill_color_rgba() = fill_color;
 227                         rec_rect->lower_to_bottom();
 228
 229                         RecBoxInfo recbox;
 230                         recbox.rectangle = rec_rect;
 231                         recbox.start = _trackview.session().transport_frame();
 232                         recbox.length = 0;
 233
 234                         rec_rects.push_back (recbox);
 235
 236                         screen_update_connection.disconnect();
 237                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &MidiStreamView::update_rec_box));
 238                         rec_updating = true;
 239                         rec_active = true;
 240
 241                 } else if (rec_active &&
 242                            (_trackview.session().record_status() != Session::Recording ||
 243                             !_trackview.get_diskstream()->record_enabled())) {
 244
 245                         screen_update_connection.disconnect();
 246                         rec_active = false;
 247                         rec_updating = false;
 248
 249                 }
 250
 251         } else {
 252
 253                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 254
 255                 if (!rec_rects.empty() || !rec_regions.empty()) {
 256
 257                         /* disconnect rapid update */
 258                         screen_update_connection.disconnect();
 259
 260                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 261                                 (*prc).disconnect();
 262                         }
 263                         rec_data_ready_connections.clear();
 264
 265                         rec_updating = false;
 266                         rec_active = false;
 267
 268                         /* remove temp regions */
 269
 270                         for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
 271                                 list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 272
 273                                 tmp = iter;
 274                                 ++tmp;
 275
 276                                 (*iter).first->drop_references ();
 277
 278                                 iter = tmp;
 279                         }
 280
 281                         rec_regions.clear();
 282
 283                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 284
 285                         /* transport stopped, clear boxes */
 286                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 287                                 RecBoxInfo &rect = (*iter);
 288                                 delete rect.rectangle;
 289                         }
 290
 291                         rec_rects.clear();
 292
 293                 }
 294         }
 295 }
 296
 297 void
 298 MidiStreamView::update_rec_regions (boost::shared_ptr<MidiBuffer> data, nframes_t start, nframes_t dur)
 299 {
 300         ENSURE_GUI_THREAD (bind (mem_fun (*this, &MidiStreamView::update_rec_regions), data, start, dur));
 301
 302         if (use_rec_regions) {
 303
 304                 uint32_t n = 0;
 305
 306                 for (list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 307
 308                         list<pair<boost::shared_ptr<Region>,RegionView*> >::iterator tmp;
 309
 310                         tmp = iter;
 311                         ++tmp;
 312
 313                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 314                                 /* rect already hidden, this region is done */
 315                                 iter = tmp;
 316                                 continue;
 317                         }
 318
 319                         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
 320                         if (!region) {
 321                                 continue;
 322                         }
 323
 324                         nframes_t origlen = region->length();
 325
 326                         //cerr << "MIDI URR: " << start << " * " << dur
 327                         //      << " (origlen " << origlen << ")" << endl;
 328
 329                         if (region == rec_regions.back().first && rec_active) {
 330
 331                                 if (start >= region->start()) {
 332
 333                                         nframes_t nlen = start + dur - region->start();
 334
 335                                         if (nlen != region->length()) {
 336
 337                                                 region->freeze ();
 338                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 339                                                 region->set_length (nlen, this);
 340                                                 region->thaw ("updated");
 341
 342                                                 if (origlen == 1) {
 343                                                         /* our special initial length */
 344                                                         iter->second = add_region_view_internal (region, false);
 345                                                         ((MidiRegionView*)iter->second)->begin_write();
 346                                                 }
 347
 348                                                 /* also update rect */
 349                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 350                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 351                                                 rect->property_x2() = xend;
 352
 353                                                 /* draw events */
 354                                                 MidiRegionView* mrv = (MidiRegionView*)iter->second;
 355                                                 for (size_t i = 0; i < data->size(); ++i) {
 356                                                         const MidiEvent& ev = (*data.get())[i];
 357                                                         mrv->add_event(ev);
 358                                                         mrv->extend_active_notes();
 359                                                 }
 360
 361                                         }
 362                                 }
 363
 364                         } else {
 365
 366                                 nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 367
 368                                 if (nlen != region->length()) {
 369
 370                                         if (region->source(0)->length() >= region->start() + nlen) {
 371
 372                                                 region->freeze ();
 373                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 374                                                 region->set_length (nlen, this);
 375                                                 region->thaw ("updated");
 376
 377                                                 if (origlen == 1) {
 378                                                         /* our special initial length */
 379                                                         iter->second = add_region_view_internal (region, false);
 380                                                 }
 381
 382                                                 /* also hide rect */
 383                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 384                                                 rect->hide();
 385
 386                                         }
 387                                 }
 388                         }
 389
 390                         iter = tmp;
 391                 }
 392         }
 393 }
 394
 395 void
 396 MidiStreamView::rec_data_range_ready (boost::shared_ptr<MidiBuffer> data, jack_nframes_t start, jack_nframes_t dur, boost::weak_ptr<Source> weak_src)
 397 {
 398         // this is called from the butler thread for now
 399
 400         ENSURE_GUI_THREAD(bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), data, start, dur, weak_src));
 401
 402         boost::shared_ptr<SMFSource> src (boost::dynamic_pointer_cast<SMFSource>(weak_src.lock()));
 403
 404         //cerr << src.get() << " MIDI READY: " << start << " * " << dur
 405         //      << " -- " << data->size() << " events!" << endl;
 406
 407         this->update_rec_regions (data, start, dur);
 408 }
 409
 410 void
 411 MidiStreamView::color_handler ()
 412 {
 413
 414         //case cMidiTrackBase:
 415         if (_trackview.is_midi_track()) {
 416                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
 417         }
 418
 419         //case cMidiBusBase:
 420         if (!_trackview.is_midi_track()) {
 421                 canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();;
 422         }
 423 }
 424