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         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.done = false;
 236         current_timefx->request.cancel = false;
 237
 238         /* re-connect the cancel button and delete events */
 239
 240         current_timefx->first_cancel.disconnect();
 241         current_timefx->first_delete.disconnect();
 242
 243         current_timefx->first_cancel = current_timefx->cancel_button->signal_clicked().connect
 244                 (sigc::mem_fun (current_timefx, &TimeFXDialog::cancel_in_progress));
 245         current_timefx->first_delete = current_timefx->signal_delete_event().connect
 246                 (sigc::mem_fun (current_timefx, &TimeFXDialog::delete_in_progress));
 247
 248         if (pthread_create_and_store ("timefx", &current_timefx->request.thread, timefx_thread, current_timefx)) {
 249                 current_timefx->hide ();
 250                 error << _("timefx cannot be started - thread creation error") << endmsg;
 251                 return -1;
 252         }
 253
 254         pthread_detach (current_timefx->request.thread);
 255
 256         while (!current_timefx->request.done && !current_timefx->request.cancel) {
 257                 gtk_main_iteration ();
 258         }
 259
 260         current_timefx->hide ();
 261         return current_timefx->status;
 262 }
 263
 264 void
 265 Editor::do_timefx (TimeFXDialog& dialog)
 266 {
 267         Track*    t;
 268         boost::shared_ptr<Playlist> playlist;
 269         boost::shared_ptr<Region>   new_region;
 270         bool in_command = false;
 271
 272         uint32_t const N = dialog.regions.size ();
 273
 274         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 275                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 276
 277                 if (!arv) {
 278                         continue;
 279                 }
 280
 281                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 282                 TimeAxisView* tv = &(arv->get_time_axis_view());
 283                 RouteTimeAxisView* rtv;
 284                 RegionSelection::iterator tmp;
 285
 286                 tmp = i;
 287                 ++tmp;
 288
 289                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 290                         i = tmp;
 291                         continue;
 292                 }
 293
 294                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 295                         i = tmp;
 296                         continue;
 297                 }
 298
 299                 if ((playlist = t->playlist()) == 0) {
 300                         i = tmp;
 301                         continue;
 302                 }
 303
 304                 if (dialog.request.cancel) {
 305                         /* we were cancelled */
 306                         dialog.status = 1;
 307                         return;
 308                 }
 309
 310                 Filter* fx;
 311
 312                 if (dialog.pitching) {
 313                         fx = new Pitch (*_session, dialog.request);
 314                 } else {
 315 #ifdef USE_RUBBERBAND
 316                         fx = new RBStretch (*_session, dialog.request);
 317 #else
 318                         fx = new STStretch (*_session, dialog.request);
 319 #endif
 320                 }
 321
 322                 current_timefx->descend (1.0 / N);
 323
 324                 if (fx->run (region, current_timefx)) {
 325                         dialog.status = -1;
 326                         dialog.request.done = true;
 327                         delete fx;
 328                         return;
 329                 }
 330
 331                 if (!fx->results.empty()) {
 332                         new_region = fx->results.front();
 333
 334                         if (!in_command) {
 335                                 _session->begin_reversible_command (dialog.pitching ? _("pitch shift") : _("time stretch"));
 336                                 in_command = true;
 337                         }
 338
 339                         playlist->clear_changes ();
 340                         playlist->replace_region (region, new_region, region->position());
 341                         _session->add_command (new StatefulDiffCommand (playlist));
 342                 }
 343
 344                 current_timefx->ascend ();
 345
 346                 i = tmp;
 347                 delete fx;
 348         }
 349
 350         if (in_command) {
 351                 _session->commit_reversible_command ();
 352         }
 353
 354         dialog.status = 0;
 355         dialog.request.done = true;
 356 }
 357
 358 void*
 359 Editor::timefx_thread (void *arg)
 360 {
 361         SessionEvent::create_per_thread_pool ("timefx events", 64);
 362
 363         TimeFXDialog* tsd = static_cast<TimeFXDialog*>(arg);
 364
 365         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 366
 367         tsd->editor.do_timefx (*tsd);
 368
 369         /* GACK! HACK! sleep for a bit so that our request buffer for the GUI
 370            event loop doesn't die before any changes we made are processed
 371            by the GUI ...
 372         */
 373
 374         struct timespec t = { 2, 0 };
 375         nanosleep (&t, 0);
 376
 377         return 0;
 378 }
 379