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
  24 #include <string>
  25
  26 #include "pbd/error.h"
  27 #include "pbd/pthread_utils.h"
  28 #include "pbd/memento_command.h"
  29 #include "pbd/stateful_diff_command.h"
  30
  31 #include <gtkmm2ext/utils.h>
  32
  33 #include "audio_region_view.h"
  34 #include "audio_time_axis.h"
  35 #include "editor.h"
  36 #include "region_selection.h"
  37 #include "time_fx_dialog.h"
  38
  39 #include "ardour/session.h"
  40 #include "ardour/region.h"
  41 #include "ardour/audioplaylist.h"
  42 #include "ardour/audio_track.h"
  43 #include "ardour/audioregion.h"
  44 #include "ardour/stretch.h"
  45 #include "ardour/midi_stretch.h"
  46 #include "ardour/pitch.h"
  47
  48 #ifdef USE_RUBBERBAND
  49 #include "rubberband/RubberBandStretcher.h"
  50 using namespace RubberBand;
  51 #endif
  52
  53 #include "i18n.h"
  54
  55 using namespace std;
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Gtk;
  59 using namespace Gtkmm2ext;
  60
  61 /** @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
  62 int
  63 Editor::time_stretch (RegionSelection& regions, float fraction)
  64 {
  65         // FIXME: kludge, implement stretching of selection of both types
  66
  67         if (regions.front()->region()->data_type() == DataType::AUDIO) {
  68                 // Audio, pop up timefx dialog
  69                 return time_fx (regions, fraction, false);
  70         } else {
  71                 // MIDI, just stretch
  72                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&regions.front()->get_time_axis_view());
  73                 if (!rtv)
  74                         return -1;
  75
  76                 boost::shared_ptr<Playlist> playlist
  77                         = rtv->track()->playlist();
  78
  79             ARDOUR::TimeFXRequest request;
  80                 request.time_fraction = fraction;
  81                 MidiStretch stretch(*_session, request);
  82                 begin_reversible_command ("midi stretch");
  83                 stretch.run(regions.front()->region());
  84                 playlist->clear_history ();
  85                 playlist->replace_region (regions.front()->region(), stretch.results[0],
  86                                 regions.front()->region()->position());
  87                 _session->add_command (new StatefulDiffCommand (playlist));
  88                 commit_reversible_command ();
  89         }
  90
  91         return 0;
  92 }
  93
  94 int
  95 Editor::pitch_shift (RegionSelection& regions, float fraction)
  96 {
  97         return time_fx (regions, fraction, true);
  98 }
  99
 100 /** @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
 101 int
 102 Editor::time_fx (RegionSelection& regions, float val, bool pitching)
 103 {
 104         delete current_timefx;
 105
 106         current_timefx = new TimeFXDialog (*this, pitching);
 107
 108         current_timefx->progress_bar.set_fraction (0.0f);
 109
 110         switch (current_timefx->run ()) {
 111         case RESPONSE_ACCEPT:
 112                 break;
 113         default:
 114                 current_timefx->hide ();
 115                 return 1;
 116         }
 117
 118         current_timefx->status = 0;
 119         current_timefx->regions = regions;
 120
 121         if (pitching) {
 122
 123                 float cents = current_timefx->pitch_octave_adjustment.get_value() * 1200.0;
 124                 float pitch_fraction;
 125                 cents += current_timefx->pitch_semitone_adjustment.get_value() * 100.0;
 126                 cents += current_timefx->pitch_cent_adjustment.get_value();
 127
 128                 if (cents == 0.0) {
 129                         // user didn't change anything
 130                         current_timefx->hide ();
 131                         return 0;
 132                 }
 133
 134                 // one octave == 1200 cents
 135                 // adding one octave doubles the frequency
 136                 // ratio is 2^^octaves
 137
 138                 pitch_fraction = pow(2, cents/1200);
 139
 140                 current_timefx->request.time_fraction = 1.0;
 141                 current_timefx->request.pitch_fraction = pitch_fraction;
 142
 143         } else {
 144
 145                 current_timefx->request.time_fraction = val;
 146                 current_timefx->request.pitch_fraction = 1.0;
 147
 148         }
 149
 150 #ifdef USE_RUBBERBAND
 151         /* parse options */
 152
 153         RubberBandStretcher::Options options = 0;
 154
 155         bool realtime = false;
 156         bool precise = false;
 157         bool peaklock = true;
 158         bool longwin = false;
 159         bool shortwin = false;
 160         bool preserve_formants = false;
 161         string txt;
 162
 163         enum {
 164                 NoTransients,
 165                 BandLimitedTransients,
 166                 Transients
 167         } transients = Transients;
 168
 169         precise = current_timefx->precise_button.get_active();
 170         preserve_formants = current_timefx->preserve_formants_button.get_active();
 171
 172         txt = current_timefx->stretch_opts_selector.get_active_text ();
 173
 174         for (int i = 0; i <= 6; i++) {
 175                 if (txt == rb_opt_strings[i]) {
 176                         rb_current_opt = i;
 177                         break;
 178                 }
 179         }
 180
 181         switch (rb_current_opt) {
 182                 case 0:
 183                         transients = NoTransients; peaklock = false; longwin = true; shortwin = false;
 184                         break;
 185                 case 1:
 186                         transients = NoTransients; peaklock = false; longwin = false; shortwin = false;
 187                         break;
 188                 case 2:
 189                         transients = NoTransients; peaklock = true; longwin = false; shortwin = false;
 190                         break;
 191                 case 3:
 192                         transients = BandLimitedTransients; peaklock = true; longwin = false; shortwin = false;
 193                         break;
 194                 case 5:
 195                         transients = Transients; peaklock = false; longwin = false; shortwin = true;
 196                         break;
 197                 case 6:
 198                         transients = NoTransients;
 199                         precise = true;
 200                         preserve_formants = false;
 201                         current_timefx->request.pitch_fraction = 1/val;
 202                         shortwin = true;
 203                         // peaklock = false;
 204                         break;
 205                 default:
 206                         /* default/4 */
 207                         transients = Transients; peaklock = true; longwin = false; shortwin = false;
 208                         break;
 209         };
 210
 211         if (realtime)          options |= RubberBandStretcher::OptionProcessRealTime;
 212         if (precise)           options |= RubberBandStretcher::OptionStretchPrecise;
 213         if (preserve_formants) options |= RubberBandStretcher::OptionFormantPreserved;
 214         if (!peaklock)         options |= RubberBandStretcher::OptionPhaseIndependent;
 215         if (longwin)           options |= RubberBandStretcher::OptionWindowLong;
 216         if (shortwin)          options |= RubberBandStretcher::OptionWindowShort;
 217
 218         switch (transients) {
 219         case NoTransients:
 220                 options |= RubberBandStretcher::OptionTransientsSmooth;
 221                 break;
 222         case BandLimitedTransients:
 223                 options |= RubberBandStretcher::OptionTransientsMixed;
 224                 break;
 225         case Transients:
 226                 options |= RubberBandStretcher::OptionTransientsCrisp;
 227                 break;
 228         }
 229
 230         current_timefx->request.opts = (int) options;
 231 #else
 232         current_timefx->request.quick_seek = current_timefx->quick_button.get_active();
 233         current_timefx->request.antialias = !current_timefx->antialias_button.get_active();
 234 #endif
 235         current_timefx->request.progress = 0.0f;
 236         current_timefx->request.done = false;
 237         current_timefx->request.cancel = false;
 238
 239         /* re-connect the cancel button and delete events */
 240
 241         current_timefx->first_cancel.disconnect();
 242         current_timefx->first_delete.disconnect();
 243
 244         current_timefx->first_cancel = current_timefx->cancel_button->signal_clicked().connect
 245                 (sigc::mem_fun (current_timefx, &TimeFXDialog::cancel_in_progress));
 246         current_timefx->first_delete = current_timefx->signal_delete_event().connect
 247                 (sigc::mem_fun (current_timefx, &TimeFXDialog::delete_in_progress));
 248
 249         if (pthread_create_and_store ("timefx", &current_timefx->request.thread, timefx_thread, current_timefx)) {
 250                 current_timefx->hide ();
 251                 error << _("timefx cannot be started - thread creation error") << endmsg;
 252                 return -1;
 253         }
 254
 255         pthread_detach (current_timefx->request.thread);
 256
 257         sigc::connection c = Glib::signal_timeout().connect (sigc::mem_fun (current_timefx, &TimeFXDialog::update_progress), 100);
 258
 259         while (!current_timefx->request.done && !current_timefx->request.cancel) {
 260                 gtk_main_iteration ();
 261         }
 262
 263         c.disconnect ();
 264
 265         current_timefx->hide ();
 266         return current_timefx->status;
 267 }
 268
 269 void
 270 Editor::do_timefx (TimeFXDialog& dialog)
 271 {
 272         Track*    t;
 273         boost::shared_ptr<Playlist> playlist;
 274         boost::shared_ptr<Region>   new_region;
 275         bool in_command = false;
 276
 277         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 278                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 279
 280                 if (!arv) {
 281                         continue;
 282                 }
 283
 284                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 285                 TimeAxisView* tv = &(arv->get_time_axis_view());
 286                 RouteTimeAxisView* rtv;
 287                 RegionSelection::iterator tmp;
 288
 289                 tmp = i;
 290                 ++tmp;
 291
 292                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 293                         i = tmp;
 294                         continue;
 295                 }
 296
 297                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 298                         i = tmp;
 299                         continue;
 300                 }
 301
 302                 if ((playlist = t->playlist()) == 0) {
 303                         i = tmp;
 304                         continue;
 305                 }
 306
 307                 if (dialog.request.cancel) {
 308                         /* we were cancelled */
 309                         dialog.status = 1;
 310                         return;
 311                 }
 312
 313                 Filter* fx;
 314
 315                 if (dialog.pitching) {
 316                         fx = new Pitch (*_session, dialog.request);
 317                 } else {
 318 #ifdef USE_RUBBERBAND
 319                         fx = new RBStretch (*_session, dialog.request);
 320 #else
 321                         fx = new STStretch (*_session, dialog.request);
 322 #endif
 323                 }
 324
 325                 if (fx->run (region)) {
 326                         dialog.status = -1;
 327                         dialog.request.done = true;
 328                         delete fx;
 329                         return;
 330                 }
 331
 332                 if (!fx->results.empty()) {
 333                         new_region = fx->results.front();
 334
 335                         if (!in_command) {
 336                                 _session->begin_reversible_command (dialog.pitching ? _("pitch shift") : _("time stretch"));
 337                                 in_command = true;
 338                         }
 339
 340                         playlist->clear_history ();
 341                         playlist->replace_region (region, new_region, region->position());
 342                         _session->add_command (new StatefulDiffCommand (playlist));
 343                 }
 344
 345                 i = tmp;
 346                 delete fx;
 347         }
 348
 349         if (in_command) {
 350                 _session->commit_reversible_command ();
 351         }
 352
 353         dialog.status = 0;
 354         dialog.request.done = true;
 355 }
 356
 357 void*
 358 Editor::timefx_thread (void *arg)
 359 {
 360         SessionEvent::create_per_thread_pool ("timefx events", 64);
 361
 362         TimeFXDialog* tsd = static_cast<TimeFXDialog*>(arg);
 363
 364         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 365
 366         tsd->editor.do_timefx (*tsd);
 367
 368         return 0;
 369 }
 370