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
  25 #include <string>
  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 <gtkmm2ext/utils.h>
  33
  34 #include "audio_region_view.h"
  35 #include "audio_time_axis.h"
  36 #include "editor.h"
  37 #include "region_selection.h"
  38 #include "time_fx_dialog.h"
  39
  40 #include "ardour/session.h"
  41 #include "ardour/region.h"
  42 #include "ardour/audioplaylist.h"
  43 #include "ardour/audio_track.h"
  44 #include "ardour/audioregion.h"
  45 #include "ardour/stretch.h"
  46 #include "ardour/midi_stretch.h"
  47 #include "ardour/pitch.h"
  48
  49 #ifdef USE_RUBBERBAND
  50 #include "rubberband/RubberBandStretcher.h"
  51 using namespace RubberBand;
  52 #endif
  53
  54 #include "i18n.h"
  55
  56 using namespace std;
  57 using namespace ARDOUR;
  58 using namespace PBD;
  59 using namespace Gtk;
  60 using namespace Gtkmm2ext;
  61
  62 /** @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
  63 int
  64 Editor::time_stretch (RegionSelection& regions, float fraction)
  65 {
  66         // FIXME: kludge, implement stretching of selection of both types
  67
  68         if (regions.front()->region()->data_type() == DataType::AUDIO) {
  69                 // Audio, pop up timefx dialog
  70                 return time_fx (regions, fraction, false);
  71         } else {
  72                 // MIDI, just stretch
  73                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&regions.front()->get_time_axis_view());
  74                 if (!rtv)
  75                         return -1;
  76
  77                 boost::shared_ptr<Playlist> playlist = 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_changes ();
  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 /** @param val Percentage to time stretch by; ignored if pitch-shifting.
 101  *  @param pitching true to pitch shift, false to time stretch.
 102  *  @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
 103 int
 104 Editor::time_fx (RegionSelection& regions, float val, bool pitching)
 105 {
 106         delete current_timefx;
 107
 108         current_timefx = new TimeFXDialog (*this, pitching);
 109
 110         current_timefx->progress_bar.set_fraction (0.0f);
 111
 112         switch (current_timefx->run ()) {
 113         case RESPONSE_ACCEPT:
 114                 break;
 115         default:
 116                 current_timefx->hide ();
 117                 return 1;
 118         }
 119
 120         current_timefx->status = 0;
 121         current_timefx->regions = regions;
 122
 123         if (pitching) {
 124
 125                 float cents = current_timefx->pitch_octave_adjustment.get_value() * 1200.0;
 126                 float pitch_fraction;
 127                 cents += current_timefx->pitch_semitone_adjustment.get_value() * 100.0;
 128                 cents += current_timefx->pitch_cent_adjustment.get_value();
 129
 130                 if (cents == 0.0) {
 131                         // user didn't change anything
 132                         current_timefx->hide ();
 133                         return 0;
 134                 }
 135
 136                 // one octave == 1200 cents
 137                 // adding one octave doubles the frequency
 138                 // ratio is 2^^octaves
 139
 140                 pitch_fraction = pow(2, cents/1200);
 141
 142                 current_timefx->request.time_fraction = 1.0;
 143                 current_timefx->request.pitch_fraction = pitch_fraction;
 144
 145         } else {
 146
 147                 current_timefx->request.time_fraction = val;
 148                 current_timefx->request.pitch_fraction = 1.0;
 149
 150         }
 151
 152 #ifdef USE_RUBBERBAND
 153         /* parse options */
 154
 155         RubberBandStretcher::Options options = 0;
 156
 157         bool realtime = false;
 158         bool precise = false;
 159         bool peaklock = true;
 160         bool longwin = false;
 161         bool shortwin = false;
 162         bool preserve_formants = false;
 163         string txt;
 164
 165         enum {
 166                 NoTransients,
 167                 BandLimitedTransients,
 168                 Transients
 169         } transients = Transients;
 170
 171         precise = current_timefx->precise_button.get_active();
 172         preserve_formants = current_timefx->preserve_formants_button.get_active();
 173
 174         txt = current_timefx->stretch_opts_selector.get_active_text ();
 175
 176         for (int i = 0; i <= 6; i++) {
 177                 if (txt == rb_opt_strings[i]) {
 178                         rb_current_opt = i;
 179                         break;
 180                 }
 181         }
 182
 183         switch (rb_current_opt) {
 184                 case 0:
 185                         transients = NoTransients; peaklock = false; longwin = true; shortwin = false;
 186                         break;
 187                 case 1:
 188                         transients = NoTransients; peaklock = false; longwin = false; shortwin = false;
 189                         break;
 190                 case 2:
 191                         transients = NoTransients; peaklock = true; longwin = false; shortwin = false;
 192                         break;
 193                 case 3:
 194                         transients = BandLimitedTransients; peaklock = true; longwin = false; shortwin = false;
 195                         break;
 196                 case 5:
 197                         transients = Transients; peaklock = false; longwin = false; shortwin = true;
 198                         break;
 199                 case 6:
 200                         transients = NoTransients;
 201                         precise = true;
 202                         preserve_formants = false;
 203                         current_timefx->request.pitch_fraction = 1/val;
 204                         shortwin = true;
 205                         // peaklock = false;
 206                         break;
 207                 default:
 208                         /* default/4 */
 209                         transients = Transients; peaklock = true; longwin = false; shortwin = false;
 210                         break;
 211         };
 212
 213         if (realtime)          options |= RubberBandStretcher::OptionProcessRealTime;
 214         if (precise)           options |= RubberBandStretcher::OptionStretchPrecise;
 215         if (preserve_formants) options |= RubberBandStretcher::OptionFormantPreserved;
 216         if (!peaklock)         options |= RubberBandStretcher::OptionPhaseIndependent;
 217         if (longwin)           options |= RubberBandStretcher::OptionWindowLong;
 218         if (shortwin)          options |= RubberBandStretcher::OptionWindowShort;
 219
 220         switch (transients) {
 221         case NoTransients:
 222                 options |= RubberBandStretcher::OptionTransientsSmooth;
 223                 break;
 224         case BandLimitedTransients:
 225                 options |= RubberBandStretcher::OptionTransientsMixed;
 226                 break;
 227         case Transients:
 228                 options |= RubberBandStretcher::OptionTransientsCrisp;
 229                 break;
 230         }
 231
 232         current_timefx->request.opts = (int) options;
 233 #else
 234         current_timefx->request.quick_seek = current_timefx->quick_button.get_active();
 235         current_timefx->request.antialias = !current_timefx->antialias_button.get_active();
 236 #endif
 237         current_timefx->request.progress = 0.0f;
 238         current_timefx->request.done = false;
 239         current_timefx->request.cancel = false;
 240
 241         /* re-connect the cancel button and delete events */
 242
 243         current_timefx->first_cancel.disconnect();
 244         current_timefx->first_delete.disconnect();
 245
 246         current_timefx->first_cancel = current_timefx->cancel_button->signal_clicked().connect
 247                 (sigc::mem_fun (current_timefx, &TimeFXDialog::cancel_in_progress));
 248         current_timefx->first_delete = current_timefx->signal_delete_event().connect
 249                 (sigc::mem_fun (current_timefx, &TimeFXDialog::delete_in_progress));
 250
 251         if (pthread_create_and_store ("timefx", &current_timefx->request.thread, timefx_thread, current_timefx)) {
 252                 current_timefx->hide ();
 253                 error << _("timefx cannot be started - thread creation error") << endmsg;
 254                 return -1;
 255         }
 256
 257         pthread_detach (current_timefx->request.thread);
 258
 259         sigc::connection c = Glib::signal_timeout().connect (sigc::mem_fun (current_timefx, &TimeFXDialog::update_progress), 100);
 260
 261         while (!current_timefx->request.done && !current_timefx->request.cancel) {
 262                 gtk_main_iteration ();
 263         }
 264
 265         c.disconnect ();
 266
 267         current_timefx->hide ();
 268         return current_timefx->status;
 269 }
 270
 271 void
 272 Editor::do_timefx (TimeFXDialog& dialog)
 273 {
 274         Track*    t;
 275         boost::shared_ptr<Playlist> playlist;
 276         boost::shared_ptr<Region>   new_region;
 277         bool in_command = false;
 278
 279         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 280                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 281
 282                 if (!arv) {
 283                         continue;
 284                 }
 285
 286                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 287                 TimeAxisView* tv = &(arv->get_time_axis_view());
 288                 RouteTimeAxisView* rtv;
 289                 RegionSelection::iterator tmp;
 290
 291                 tmp = i;
 292                 ++tmp;
 293
 294                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 295                         i = tmp;
 296                         continue;
 297                 }
 298
 299                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 300                         i = tmp;
 301                         continue;
 302                 }
 303
 304                 if ((playlist = t->playlist()) == 0) {
 305                         i = tmp;
 306                         continue;
 307                 }
 308
 309                 if (dialog.request.cancel) {
 310                         /* we were cancelled */
 311                         dialog.status = 1;
 312                         return;
 313                 }
 314
 315                 Filter* fx;
 316
 317                 if (dialog.pitching) {
 318                         fx = new Pitch (*_session, dialog.request);
 319                 } else {
 320 #ifdef USE_RUBBERBAND
 321                         fx = new RBStretch (*_session, dialog.request);
 322 #else
 323                         fx = new STStretch (*_session, dialog.request);
 324 #endif
 325                 }
 326
 327                 if (fx->run (region)) {
 328                         dialog.status = -1;
 329                         dialog.request.done = true;
 330                         delete fx;
 331                         return;
 332                 }
 333
 334                 if (!fx->results.empty()) {
 335                         new_region = fx->results.front();
 336
 337                         if (!in_command) {
 338                                 _session->begin_reversible_command (dialog.pitching ? _("pitch shift") : _("time stretch"));
 339                                 in_command = true;
 340                         }
 341
 342                         playlist->clear_changes ();
 343                         playlist->replace_region (region, new_region, region->position());
 344                         _session->add_command (new StatefulDiffCommand (playlist));
 345                 }
 346
 347                 i = tmp;
 348                 delete fx;
 349         }
 350
 351         if (in_command) {
 352                 _session->commit_reversible_command ();
 353         }
 354
 355         dialog.status = 0;
 356         dialog.request.done = true;
 357 }
 358
 359 void*
 360 Editor::timefx_thread (void *arg)
 361 {
 362         SessionEvent::create_per_thread_pool ("timefx events", 64);
 363
 364         TimeFXDialog* tsd = static_cast<TimeFXDialog*>(arg);
 365
 366         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 367
 368         tsd->editor.do_timefx (*tsd);
 369
 370         /* GACK! HACK! sleep for a bit so that our request buffer for the GUI
 371            event loop doesn't die before any changes we made are processed
 372            by the GUI ...
 373         */
 374
 375         struct timespec t = { 2, 0 };
 376         nanosleep (&t, 0);
 377
 378         return 0;
 379 }
 380