gtk2_ardour/editor_timefx.cc

   1 /*
   2     Copyright (C) 2000 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
  20 #include <iostream>
  21 #include <cstdlib>
  22 #include <cmath>
  23 #include <ctime>
  24 #include <string>
  25 #include <set>
  26
  27 #include "pbd/error.h"
  28 #include "pbd/pthread_utils.h"
  29 #include "pbd/memento_command.h"
  30 #include "pbd/stateful_diff_command.h"
  31
  32 #include "ardour/audioregion.h"
  33 #include "ardour/midi_stretch.h"
  34 #include "ardour/pitch.h"
  35 #include "ardour/region.h"
  36 #include "ardour/session.h"
  37 #include "ardour/stretch.h"
  38
  39 #include <gtkmm2ext/utils.h>
  40
  41 #include "audio_region_view.h"
  42 #include "audio_time_axis.h"
  43 #include "editor.h"
  44 #include "region_selection.h"
  45 #include "time_fx_dialog.h"
  46
  47 #ifdef USE_RUBBERBAND
  48 #include <rubberband/RubberBandStretcher.h>
  49 using namespace RubberBand;
  50 #endif
  51
  52 #include "pbd/i18n.h"
  53
  54 using namespace std;
  55 using namespace ARDOUR;
  56 using namespace PBD;
  57 using namespace Gtk;
  58 using namespace Gtkmm2ext;
  59
  60 /** @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
  61 int
  62 Editor::time_stretch (RegionSelection& regions, float fraction)
  63 {
  64         RegionList audio;
  65         RegionList midi;
  66         int aret;
  67
  68         begin_reversible_command (_("stretch/shrink"));
  69
  70         for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
  71                 if  ((*i)->region()->data_type() == DataType::AUDIO) {
  72                         audio.push_back ((*i)->region());
  73                 } else if  ((*i)->region()->data_type() == DataType::MIDI) {
  74                         midi.push_back ((*i)->region());
  75                 }
  76         }
  77
  78         if ((aret = time_fx (audio, fraction, false)) != 0) {
  79                 commit_reversible_command ();
  80                 return aret;
  81         }
  82
  83         set<boost::shared_ptr<Playlist> > midi_playlists_affected;
  84
  85         for (RegionList::iterator i = midi.begin(); i != midi.end(); ++i) {
  86                 boost::shared_ptr<Playlist> playlist = (*i)->playlist();
  87
  88                 if (playlist) {
  89                         playlist->clear_changes ();
  90                 }
  91
  92         }
  93
  94         ARDOUR::TimeFXRequest request;
  95         request.time_fraction = fraction;
  96
  97         for (RegionList::iterator i = midi.begin(); i != midi.end(); ++i) {
  98                 boost::shared_ptr<Playlist> playlist = (*i)->playlist();
  99
 100                 if (!playlist) {
 101                         continue;
 102                 }
 103
 104                 MidiStretch stretch (*_session, request);
 105                 stretch.run (*i);
 106
 107                 playlist->replace_region (regions.front()->region(), stretch.results[0],
 108                                           regions.front()->region()->position());
 109                 midi_playlists_affected.insert (playlist);
 110         }
 111
 112         for (set<boost::shared_ptr<Playlist> >::iterator p = midi_playlists_affected.begin(); p != midi_playlists_affected.end(); ++p) {
 113                 _session->add_command (new StatefulDiffCommand (*p));
 114         }
 115
 116         commit_reversible_command ();
 117
 118         return 0;
 119 }
 120
 121 int
 122 Editor::pitch_shift (RegionSelection& regions, float fraction)
 123 {
 124         RegionList rl;
 125
 126         for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
 127                 rl.push_back ((*i)->region());
 128         }
 129
 130         begin_reversible_command (_("pitch shift"));
 131
 132         int ret = time_fx (rl, fraction, true);
 133
 134         if (ret == 0) {
 135                 commit_reversible_command ();
 136         } else {
 137                 abort_reversible_command ();
 138         }
 139
 140         return ret;
 141 }
 142
 143 /** @param val Percentage to time stretch by; ignored if pitch-shifting.
 144  *  @param pitching true to pitch shift, false to time stretch.
 145  *  @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
 146 int
 147 Editor::time_fx (RegionList& regions, float val, bool pitching)
 148 {
 149         if (regions.empty()) {
 150                 return 0;
 151         }
 152
 153         const samplecnt_t oldlen = (samplecnt_t) (regions.front()->length());
 154         const samplecnt_t newlen = (samplecnt_t) (regions.front()->length() * val);
 155         const samplecnt_t pos = regions.front()->position ();
 156
 157         delete current_timefx;
 158         current_timefx = new TimeFXDialog (*this, pitching, oldlen, newlen, pos);
 159         current_timefx->regions = regions;
 160
 161         switch (current_timefx->run ()) {
 162         case RESPONSE_ACCEPT:
 163                 break;
 164         default:
 165                 current_timefx->hide ();
 166                 return 1;
 167         }
 168
 169         current_timefx->status = 0;
 170         current_timefx->request.time_fraction = current_timefx->get_time_fraction ();
 171         current_timefx->request.pitch_fraction = current_timefx->get_pitch_fraction ();
 172
 173         if (current_timefx->request.time_fraction == 1.0 &&
 174             current_timefx->request.pitch_fraction == 1.0) {
 175                 /* nothing to do */
 176                 current_timefx->hide ();
 177                 return 0;
 178         }
 179
 180 #ifdef USE_RUBBERBAND
 181         /* parse options */
 182
 183         RubberBandStretcher::Options options = 0;
 184
 185         bool realtime = false;
 186         bool precise = false;
 187         bool peaklock = true;
 188         bool longwin = false;
 189         bool shortwin = false;
 190         bool preserve_formants = false;
 191         string txt;
 192
 193         enum {
 194                 NoTransients,
 195                 BandLimitedTransients,
 196                 Transients
 197         } transients = Transients;
 198
 199         precise = current_timefx->precise_button.get_active();
 200         preserve_formants = current_timefx->preserve_formants_button.get_active();
 201
 202         txt = current_timefx->stretch_opts_selector.get_active_text ();
 203
 204         for (int i = 0; i <= 6; i++) {
 205                 if (txt == rb_opt_strings[i]) {
 206                         rb_current_opt = i;
 207                         break;
 208                 }
 209         }
 210
 211         int rb_mode = rb_current_opt;
 212
 213         if (pitching /*&& rb_current_opt == 6*/) {
 214                 /* The timefx dialog does not show the "stretch_opts_selector"
 215                  * when pitch-shifting.  So the most recently used option from
 216                  * "Time Stretch" would be used (if any). That may even be
 217                  * "resample without preserving pitch", which would be invalid.
 218                  *
 219                  * TODO: also show stretch_opts_selector when pitching (except the option
 220                  * to not preserve pitch) and use separate  rb_current_opt when pitching.
 221                  *
 222                  * Actually overhaul this the dialog and processing opts below and use rubberband's
 223                  * "Crispness" levels:
 224                  *   -c 0   equivalent to --no-transients --no-lamination --window-long
 225                  *   -c 1   equivalent to --detector-soft --no-lamination --window-long (for piano)
 226                  *   -c 2   equivalent to --no-transients --no-lamination
 227                  *   -c 3   equivalent to --no-transients
 228                  *   -c 4   equivalent to --bl-transients
 229                  *   -c 5   default processing options
 230                  *   -c 6   equivalent to --no-lamination --window-short (may be good for drums)
 231                  */
 232                 rb_mode = 4;
 233         }
 234
 235         switch (rb_mode) {
 236                 case 0:
 237                         transients = NoTransients; peaklock = false; longwin = true; shortwin = false;
 238                         break;
 239                 case 1:
 240                         transients = NoTransients; peaklock = false; longwin = false; shortwin = false;
 241                         break;
 242                 case 2:
 243                         transients = NoTransients; peaklock = true; longwin = false; shortwin = false;
 244                         break;
 245                 case 3:
 246                         transients = BandLimitedTransients; peaklock = true; longwin = false; shortwin = false;
 247                         break;
 248                 case 5:
 249                         transients = Transients; peaklock = false; longwin = false; shortwin = true;
 250                         break;
 251                 case 6:
 252                         transients = NoTransients;
 253                         precise = true;
 254                         preserve_formants = false;
 255                         current_timefx->request.pitch_fraction = 1.0 / current_timefx->request.time_fraction;
 256                         shortwin = true;
 257                         // peaklock = false;
 258                         break;
 259                 default:
 260                         /* default/4 */
 261                         transients = Transients; peaklock = true; longwin = false; shortwin = false;
 262                         break;
 263         };
 264
 265         if (realtime)          options |= RubberBandStretcher::OptionProcessRealTime;
 266         if (precise)           options |= RubberBandStretcher::OptionStretchPrecise;
 267         if (preserve_formants) options |= RubberBandStretcher::OptionFormantPreserved;
 268         if (!peaklock)         options |= RubberBandStretcher::OptionPhaseIndependent;
 269         if (longwin)           options |= RubberBandStretcher::OptionWindowLong;
 270         if (shortwin)          options |= RubberBandStretcher::OptionWindowShort;
 271
 272         switch (transients) {
 273         case NoTransients:
 274                 options |= RubberBandStretcher::OptionTransientsSmooth;
 275                 break;
 276         case BandLimitedTransients:
 277                 options |= RubberBandStretcher::OptionTransientsMixed;
 278                 break;
 279         case Transients:
 280                 options |= RubberBandStretcher::OptionTransientsCrisp;
 281                 break;
 282         }
 283
 284         current_timefx->request.opts = (int) options;
 285 #else
 286         current_timefx->request.quick_seek = current_timefx->quick_button.get_active();
 287         current_timefx->request.antialias = !current_timefx->antialias_button.get_active();
 288 #endif
 289         current_timefx->request.done = false;
 290         current_timefx->request.cancel = false;
 291
 292         /* re-connect the cancel button and delete events */
 293
 294         current_timefx->first_cancel.disconnect();
 295         current_timefx->first_delete.disconnect();
 296
 297         current_timefx->first_cancel = current_timefx->cancel_button->signal_clicked().connect
 298                 (sigc::mem_fun (current_timefx, &TimeFXDialog::cancel_in_progress));
 299         current_timefx->first_delete = current_timefx->signal_delete_event().connect
 300                 (sigc::mem_fun (current_timefx, &TimeFXDialog::delete_in_progress));
 301
 302         current_timefx->start_updates ();
 303
 304         if (pthread_create_and_store ("timefx", &current_timefx->request.thread, timefx_thread, current_timefx)) {
 305                 current_timefx->hide ();
 306                 error << _("timefx cannot be started - thread creation error") << endmsg;
 307                 return -1;
 308         }
 309
 310         pthread_detach (current_timefx->request.thread);
 311
 312         while (!current_timefx->request.done && !current_timefx->request.cancel) {
 313                 gtk_main_iteration ();
 314         }
 315
 316         pthread_join (current_timefx->request.thread, 0);
 317
 318         current_timefx->hide ();
 319         return current_timefx->status;
 320 }
 321
 322 void
 323 Editor::do_timefx ()
 324 {
 325         boost::shared_ptr<Playlist> playlist;
 326         boost::shared_ptr<Region>   new_region;
 327         set<boost::shared_ptr<Playlist> > playlists_affected;
 328
 329         uint32_t const N = current_timefx->regions.size ();
 330
 331         for (RegionList::iterator i = current_timefx->regions.begin(); i != current_timefx->regions.end(); ++i) {
 332                 boost::shared_ptr<Playlist> playlist = (*i)->playlist();
 333
 334                 if (playlist) {
 335                         playlist->clear_changes ();
 336                 }
 337         }
 338
 339         for (RegionList::iterator i = current_timefx->regions.begin(); i != current_timefx->regions.end(); ++i) {
 340
 341                 boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (*i);
 342
 343                 if (!region || (playlist = region->playlist()) == 0) {
 344                         continue;
 345                 }
 346
 347                 if (current_timefx->request.cancel) {
 348                         /* we were cancelled */
 349                         /* XXX what to do about playlists already affected ? */
 350                         current_timefx->status = 1;
 351                         return;
 352                 }
 353
 354                 Filter* fx;
 355
 356                 if (current_timefx->pitching) {
 357                         fx = new Pitch (*_session, current_timefx->request);
 358                 } else {
 359 #ifdef USE_RUBBERBAND
 360                         fx = new RBStretch (*_session, current_timefx->request);
 361 #else
 362                         fx = new STStretch (*_session, current_timefx->request);
 363 #endif
 364                 }
 365
 366                 current_timefx->descend (1.0 / N);
 367
 368                 if (fx->run (region, current_timefx)) {
 369                         current_timefx->status = -1;
 370                         current_timefx->request.done = true;
 371                         delete fx;
 372                         return;
 373                 }
 374
 375                 if (!fx->results.empty()) {
 376                         new_region = fx->results.front();
 377
 378                         playlist->replace_region (region, new_region, region->position());
 379                         playlists_affected.insert (playlist);
 380                 }
 381
 382                 current_timefx->ascend ();
 383                 delete fx;
 384         }
 385
 386         for (set<boost::shared_ptr<Playlist> >::iterator p = playlists_affected.begin(); p != playlists_affected.end(); ++p) {
 387                 _session->add_command (new StatefulDiffCommand (*p));
 388         }
 389
 390         current_timefx->status = 0;
 391         current_timefx->request.done = true;
 392 }
 393
 394 void*
 395 Editor::timefx_thread (void *arg)
 396 {
 397         SessionEvent::create_per_thread_pool ("timefx events", 64);
 398
 399         TimeFXDialog* tsd = static_cast<TimeFXDialog*>(arg);
 400
 401         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 402
 403         tsd->editor.do_timefx ();
 404
 405         /* GACK! HACK! sleep for a bit so that our request buffer for the GUI
 406            event loop doesn't die before any changes we made are processed
 407            by the GUI ...
 408         */
 409
 410 #ifdef PLATFORM_WINDOWS
 411         Glib::usleep(2 * G_USEC_PER_SEC);
 412 #else
 413         struct timespec t = { 2, 0 };
 414         nanosleep (&t, 0);
 415 #endif
 416         return 0;
 417 }