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