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
  22 #include <gtkmm.h>
  23
  24 #include <gtkmm2ext/gtk_ui.h>
  25
  26 #include <ardour/midi_playlist.h>
  27 #include <ardour/midi_region.h>
  28 #include <ardour/midi_source.h>
  29 #include <ardour/midi_diskstream.h>
  30 #include <ardour/midi_track.h>
  31 #include <ardour/smf_source.h>
  32 #include <ardour/region_factory.h>
  33
  34 #include "midi_streamview.h"
  35 #include "region_view.h"
  36 #include "midi_region_view.h"
  37 #include "midi_time_axis.h"
  38 #include "canvas-simplerect.h"
  39 #include "region_selection.h"
  40 #include "selection.h"
  41 #include "public_editor.h"
  42 #include "ardour_ui.h"
  43 #include "rgb_macros.h"
  44 #include "gui_thread.h"
  45 #include "utils.h"
  46 #include "color.h"
  47
  48 using namespace ARDOUR;
  49 using namespace PBD;
  50 using namespace Editing;
  51
  52 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
  53         : StreamView (tv)
  54 {
  55         if (tv.is_track())
  56                 stream_base_color = color_map[cMidiTrackBase];
  57         else
  58                 stream_base_color = color_map[cMidiBusBase];
  59
  60         canvas_rect->property_fill_color_rgba() = stream_base_color;
  61         canvas_rect->property_outline_color_rgba() = color_map[cAudioTrackOutline];
  62
  63         //use_rec_regions = tv.editor.show_waveforms_recording ();
  64         use_rec_regions = true;
  65 }
  66
  67 MidiStreamView::~MidiStreamView ()
  68 {
  69 }
  70
  71
  72 void
  73 MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wait_for_waves)
  74 {
  75         ENSURE_GUI_THREAD (bind (mem_fun (*this, &MidiStreamView::add_region_view), r));
  76
  77         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
  78
  79         if (region == 0) {
  80                 return;
  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;
  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         /* catch regionview going away */
 111
 112         region->GoingAway.connect (bind (mem_fun (*this, &MidiStreamView::remove_region_view), region));
 113
 114         RegionViewAdded (region_view);
 115 }
 116
 117 // FIXME: code duplication with AudioStreamVIew
 118 void
 119 MidiStreamView::redisplay_diskstream ()
 120 {
 121         list<RegionView *>::iterator i, tmp;
 122
 123         for (i = region_views.begin(); i != region_views.end(); ++i) {
 124                 (*i)->set_valid (false);
 125         }
 126
 127         if (_trackview.is_midi_track()) {
 128                 _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
 129         }
 130
 131         for (i = region_views.begin(); i != region_views.end(); ) {
 132                 tmp = i;
 133                 tmp++;
 134
 135                 if (!(*i)->is_valid()) {
 136                         delete *i;
 137                         region_views.erase (i);
 138                 }
 139
 140                 i = tmp;
 141         }
 142
 143         /* now fix layering */
 144
 145         for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
 146                 region_layered (*i);
 147         }
 148 }
 149
 150
 151 void
 152 MidiStreamView::setup_rec_box ()
 153 {
 154         // cerr << _trackview.name() << " streamview SRB\n";
 155
 156         if (_trackview.session().transport_rolling()) {
 157
 158                 if (!rec_active &&
 159                     _trackview.session().record_status() == Session::Recording &&
 160                     _trackview.get_diskstream()->record_enabled()) {
 161
 162                         if (use_rec_regions && rec_regions.size() == rec_rects.size()) {
 163
 164                                 /* add a new region, but don't bother if they set use_rec_regions mid-record */
 165
 166                                 MidiRegion::SourceList sources;
 167
 168                                 // FIXME
 169                                 boost::shared_ptr<MidiDiskstream> mds = boost::dynamic_pointer_cast<MidiDiskstream>(_trackview.get_diskstream());
 170                                 assert(mds);
 171
 172                                 sources.push_back(mds->write_source());
 173
 174                                 rec_data_ready_connections.push_back (mds->write_source()->ViewDataRangeReady.connect (bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), mds->write_source())));
 175
 176                                 // handle multi
 177
 178                                 jack_nframes_t start = 0;
 179                                 if (rec_regions.size() > 0) {
 180                                         start = rec_regions.back()->start() + _trackview.get_diskstream()->get_captured_frames(rec_regions.size()-1);
 181                                 }
 182
 183                                 boost::shared_ptr<MidiRegion> region (boost::dynamic_pointer_cast<MidiRegion>
 184                                         (RegionFactory::create (sources, start, 1 , "", 0, (Region::Flag)(Region::DefaultFlags | Region::DoNotSaveState), false)));
 185                                 assert(region);
 186                                 region->set_position (_trackview.session().transport_frame(), this);
 187                                 rec_regions.push_back (region);
 188
 189                                 // rec regions are destroyed in setup_rec_box
 190
 191                                 /* we add the region later */
 192                         }
 193
 194                         /* start a new rec box */
 195
 196                         MidiTrack* mt = _trackview.midi_track(); /* we know what it is already */
 197                         boost::shared_ptr<MidiDiskstream> ds = mt->midi_diskstream();
 198                         jack_nframes_t frame_pos = ds->current_capture_start ();
 199                         gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
 200                         gdouble xend;
 201                         uint32_t fill_color;
 202
 203                         assert(_trackview.midi_track()->mode() == Normal);
 204
 205                         xend = xstart;
 206                         fill_color = color_map[cRecordingRectFill];
 207
 208                         ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
 209                         rec_rect->property_x1() = xstart;
 210                         rec_rect->property_y1() = 1.0;
 211                         rec_rect->property_x2() = xend;
 212                         rec_rect->property_y2() = (double) _trackview.height - 1;
 213                         rec_rect->property_outline_color_rgba() = color_map[cRecordingRectOutline];
 214                         rec_rect->property_fill_color_rgba() = fill_color;
 215
 216                         RecBoxInfo recbox;
 217                         recbox.rectangle = rec_rect;
 218                         recbox.start = _trackview.session().transport_frame();
 219                         recbox.length = 0;
 220
 221                         rec_rects.push_back (recbox);
 222
 223                         screen_update_connection.disconnect();
 224                         screen_update_connection = ARDOUR_UI::instance()->SuperRapidScreenUpdate.connect (mem_fun (*this, &MidiStreamView::update_rec_box));
 225                         rec_updating = true;
 226                         rec_active = true;
 227
 228                 } else if (rec_active &&
 229                            (_trackview.session().record_status() != Session::Recording ||
 230                             !_trackview.get_diskstream()->record_enabled())) {
 231
 232                         screen_update_connection.disconnect();
 233                         rec_active = false;
 234                         rec_updating = false;
 235
 236                 }
 237
 238         } else {
 239
 240                 // cerr << "\tNOT rolling, rec_rects = " << rec_rects.size() << " rec_regions = " << rec_regions.size() << endl;
 241
 242                 if (!rec_rects.empty() || !rec_regions.empty()) {
 243
 244                         /* disconnect rapid update */
 245                         screen_update_connection.disconnect();
 246
 247                         for (list<sigc::connection>::iterator prc = rec_data_ready_connections.begin(); prc != rec_data_ready_connections.end(); ++prc) {
 248                                 (*prc).disconnect();
 249                         }
 250                         rec_data_ready_connections.clear();
 251
 252                         rec_updating = false;
 253                         rec_active = false;
 254                         last_rec_data_frame = 0;
 255
 256                         /* remove temp regions */
 257
 258                         for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end();) {
 259                                 list<boost::shared_ptr<Region> >::iterator tmp;
 260                                 tmp = iter;
 261                                 ++tmp;
 262                                 (*iter)->drop_references ();
 263                                 iter = tmp;
 264                         }
 265
 266                         rec_regions.clear();
 267
 268                         // cerr << "\tclear " << rec_rects.size() << " rec rects\n";
 269
 270                         /* transport stopped, clear boxes */
 271                         for (vector<RecBoxInfo>::iterator iter=rec_rects.begin(); iter != rec_rects.end(); ++iter) {
 272                                 RecBoxInfo &rect = (*iter);
 273                                 delete rect.rectangle;
 274                         }
 275
 276                         rec_rects.clear();
 277
 278                 }
 279         }
 280 }
 281
 282 void
 283 MidiStreamView::update_rec_regions ()
 284 {
 285         if (use_rec_regions) {
 286
 287
 288                 uint32_t n = 0;
 289
 290                 for (list<boost::shared_ptr<Region> >::iterator iter = rec_regions.begin(); iter != rec_regions.end(); n++) {
 291
 292                         list<boost::shared_ptr<Region> >::iterator tmp;
 293
 294                         tmp = iter;
 295                         ++tmp;
 296
 297                         if (!canvas_item_visible (rec_rects[n].rectangle)) {
 298                                 /* rect already hidden, this region is done */
 299                                 iter = tmp;
 300                                 continue;
 301                         }
 302
 303                         boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(*iter);
 304                         assert(region);
 305
 306                         jack_nframes_t origlen = region->length();
 307
 308                         if (region == rec_regions.back() && rec_active) {
 309
 310                                 if (last_rec_data_frame > region->start()) {
 311
 312                                         jack_nframes_t nlen = last_rec_data_frame - region->start();
 313
 314                                         if (nlen != region->length()) {
 315
 316                                                 region->freeze ();
 317                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 318                                                 region->set_length (nlen, this);
 319                                                 region->thaw ("updated");
 320
 321                                                 if (origlen == 1) {
 322                                                         /* our special initial length */
 323                                                         add_region_view_internal (region, false);
 324                                                 }
 325
 326                                                 /* also update rect */
 327                                                 ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
 328                                                 gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
 329                                                 rect->property_x2() = xend;
 330                                         }
 331                                 }
 332
 333                         } else {
 334
 335                                 jack_nframes_t nlen = _trackview.get_diskstream()->get_captured_frames(n);
 336
 337                                 if (nlen != region->length()) {
 338
 339                                         if (region->source(0)->length() >= region->start() + nlen) {
 340
 341                                                 region->freeze ();
 342                                                 region->set_position (_trackview.get_diskstream()->get_capture_start_frame(n), this);
 343                                                 region->set_length (nlen, this);
 344                                                 region->thaw ("updated");
 345
 346                                                 if (origlen == 1) {
 347                                                         /* our special initial length */
 348                                                         add_region_view_internal (region, false);
 349                                                 }
 350
 351                                                 /* also hide rect */
 352                                                 ArdourCanvas::Item * rect = rec_rects[n].rectangle;
 353                                                 rect->hide();
 354
 355                                         }
 356                                 }
 357                         }
 358
 359                         iter = tmp;
 360                 }
 361         }
 362 }
 363
 364 void
 365 MidiStreamView::rec_data_range_ready (jack_nframes_t start, jack_nframes_t cnt, boost::shared_ptr<Source> src)
 366 {
 367         // this is called from the butler thread for now
 368         // yeah we need a "peak" building thread or something, though there's not really any
 369         // work for it to do...  whatever. :)
 370
 371         ENSURE_GUI_THREAD(bind (mem_fun (*this, &MidiStreamView::rec_data_range_ready), start, cnt, src));
 372
 373         //cerr << "REC DATA: " << start << " --- " << cnt << endl;
 374
 375         if (rec_data_ready_map.size() == 0 || start+cnt > last_rec_data_frame) {
 376                 last_rec_data_frame = start + cnt;
 377         }
 378
 379         rec_data_ready_map[src] = true;
 380
 381         if (rec_data_ready_map.size() == _trackview.get_diskstream()->n_channels().get(DataType::MIDI)) {
 382                 this->update_rec_regions ();
 383                 rec_data_ready_map.clear();
 384         }
 385 }
 386
 387 void
 388 MidiStreamView::color_handler (ColorID id, uint32_t val)
 389 {
 390         switch (id) {
 391         case cMidiTrackBase:
 392                 if (_trackview.is_midi_track()) {
 393                         canvas_rect->property_fill_color_rgba() = val;
 394                 }
 395                 break;
 396         case cMidiBusBase:
 397                 if (!_trackview.is_midi_track()) {
 398                         canvas_rect->property_fill_color_rgba() = val;
 399                 }
 400                 break;
 401         case cMidiTrackOutline:
 402                 canvas_rect->property_outline_color_rgba() = val;
 403                 break;
 404
 405         default:
 406                 break;
 407         }
 408 }