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
  78                         = rtv->track()->playlist();
  79
  80             ARDOUR::TimeFXRequest request;
  81                 request.time_fraction = fraction;
  82                 MidiStretch stretch(*_session, request);
  83                 begin_reversible_command ("midi stretch");
  84                 stretch.run(regions.front()->region());
  85                 playlist->clear_changes ();
  86                 playlist->replace_region (regions.front()->region(), stretch.results[0],
  87                                 regions.front()->region()->position());
  88                 _session->add_command (new StatefulDiffCommand (playlist));
  89                 commit_reversible_command ();
  90         }
  91
  92         return 0;
  93 }
  94
  95 int
  96 Editor::pitch_shift (RegionSelection& regions, float fraction)
  97 {
  98         return time_fx (regions, fraction, true);
  99 }
 100
 101 /** @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
 102 int
 103 Editor::time_fx (RegionSelection& regions, float val, bool pitching)
 104 {
 105         delete current_timefx;
 106
 107         current_timefx = new TimeFXDialog (*this, pitching);
 108
 109         current_timefx->progress_bar.set_fraction (0.0f);
 110
 111         switch (current_timefx->run ()) {
 112         case RESPONSE_ACCEPT:
 113                 break;
 114         default:
 115                 current_timefx->hide ();
 116                 return 1;
 117         }
 118
 119         current_timefx->status = 0;
 120         current_timefx->regions = regions;
 121
 122         if (pitching) {
 123
 124                 float cents = current_timefx->pitch_octave_adjustment.get_value() * 1200.0;
 125                 float pitch_fraction;
 126                 cents += current_timefx->pitch_semitone_adjustment.get_value() * 100.0;
 127                 cents += current_timefx->pitch_cent_adjustment.get_value();
 128
 129                 if (cents == 0.0) {
 130                         // user didn't change anything
 131                         current_timefx->hide ();
 132                         return 0;
 133                 }
 134
 135                 // one octave == 1200 cents
 136                 // adding one octave doubles the frequency
 137                 // ratio is 2^^octaves
 138
 139                 pitch_fraction = pow(2, cents/1200);
 140
 141                 current_timefx->request.time_fraction = 1.0;
 142                 current_timefx->request.pitch_fraction = pitch_fraction;
 143
 144         } else {
 145
 146                 current_timefx->request.time_fraction = val;
 147                 current_timefx->request.pitch_fraction = 1.0;
 148
 149         }
 150
 151 #ifdef USE_RUBBERBAND
 152         /* parse options */
 153
 154         RubberBandStretcher::Options options = 0;
 155
 156         bool realtime = false;
 157         bool precise = false;
 158         bool peaklock = true;
 159         bool longwin = false;
 160         bool shortwin = false;
 161         bool preserve_formants = false;
 162         string txt;
 163
 164         enum {
 165                 NoTransients,
 166                 BandLimitedTransients,
 167                 Transients
 168         } transients = Transients;
 169
 170         precise = current_timefx->precise_button.get_active();
 171         preserve_formants = current_timefx->preserve_formants_button.get_active();
 172
 173         txt = current_timefx->stretch_opts_selector.get_active_text ();
 174
 175         for (int i = 0; i <= 6; i++) {
 176                 if (txt == rb_opt_strings[i]) {
 177                         rb_current_opt = i;
 178                         break;
 179                 }
 180         }
 181
 182         switch (rb_current_opt) {
 183                 case 0:
 184                         transients = NoTransients; peaklock = false; longwin = true; shortwin = false;
 185                         break;
 186                 case 1:
 187                         transients = NoTransients; peaklock = false; longwin = false; shortwin = false;
 188                         break;
 189                 case 2:
 190                         transients = NoTransients; peaklock = true; longwin = false; shortwin = false;
 191                         break;
 192                 case 3:
 193                         transients = BandLimitedTransients; peaklock = true; longwin = false; shortwin = false;
 194                         break;
 195                 case 5:
 196                         transients = Transients; peaklock = false; longwin = false; shortwin = true;
 197                         break;
 198                 case 6:
 199                         transients = NoTransients;
 200                         precise = true;
 201                         preserve_formants = false;
 202                         current_timefx->request.pitch_fraction = 1/val;
 203                         shortwin = true;
 204                         // peaklock = false;
 205                         break;
 206                 default:
 207                         /* default/4 */
 208                         transients = Transients; peaklock = true; longwin = false; shortwin = false;
 209                         break;
 210         };
 211
 212         if (realtime)          options |= RubberBandStretcher::OptionProcessRealTime;
 213         if (precise)           options |= RubberBandStretcher::OptionStretchPrecise;
 214         if (preserve_formants) options |= RubberBandStretcher::OptionFormantPreserved;
 215         if (!peaklock)         options |= RubberBandStretcher::OptionPhaseIndependent;
 216         if (longwin)           options |= RubberBandStretcher::OptionWindowLong;
 217         if (shortwin)          options |= RubberBandStretcher::OptionWindowShort;
 218
 219         switch (transients) {
 220         case NoTransients:
 221                 options |= RubberBandStretcher::OptionTransientsSmooth;
 222                 break;
 223         case BandLimitedTransients:
 224                 options |= RubberBandStretcher::OptionTransientsMixed;
 225                 break;
 226         case Transients:
 227                 options |= RubberBandStretcher::OptionTransientsCrisp;
 228                 break;
 229         }
 230
 231         current_timefx->request.opts = (int) options;
 232 #else
 233         current_timefx->request.quick_seek = current_timefx->quick_button.get_active();
 234         current_timefx->request.antialias = !current_timefx->antialias_button.get_active();
 235 #endif
 236         current_timefx->request.progress = 0.0f;
 237         current_timefx->request.done = false;
 238         current_timefx->request.cancel = false;
 239
 240         /* re-connect the cancel button and delete events */
 241
 242         current_timefx->first_cancel.disconnect();
 243         current_timefx->first_delete.disconnect();
 244
 245         current_timefx->first_cancel = current_timefx->cancel_button->signal_clicked().connect
 246                 (sigc::mem_fun (current_timefx, &TimeFXDialog::cancel_in_progress));
 247         current_timefx->first_delete = current_timefx->signal_delete_event().connect
 248                 (sigc::mem_fun (current_timefx, &TimeFXDialog::delete_in_progress));
 249
 250         if (pthread_create_and_store ("timefx", &current_timefx->request.thread, timefx_thread, current_timefx)) {
 251                 current_timefx->hide ();
 252                 error << _("timefx cannot be started - thread creation error") << endmsg;
 253                 return -1;
 254         }
 255
 256         pthread_detach (current_timefx->request.thread);
 257
 258         sigc::connection c = Glib::signal_timeout().connect (sigc::mem_fun (current_timefx, &TimeFXDialog::update_progress), 100);
 259
 260         while (!current_timefx->request.done && !current_timefx->request.cancel) {
 261                 gtk_main_iteration ();
 262         }
 263
 264         c.disconnect ();
 265
 266         current_timefx->hide ();
 267         return current_timefx->status;
 268 }
 269
 270 void
 271 Editor::do_timefx (TimeFXDialog& dialog)
 272 {
 273         Track*    t;
 274         boost::shared_ptr<Playlist> playlist;
 275         boost::shared_ptr<Region>   new_region;
 276         bool in_command = false;
 277
 278         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 279                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 280
 281                 if (!arv) {
 282                         continue;
 283                 }
 284
 285                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 286                 TimeAxisView* tv = &(arv->get_time_axis_view());
 287                 RouteTimeAxisView* rtv;
 288                 RegionSelection::iterator tmp;
 289
 290                 tmp = i;
 291                 ++tmp;
 292
 293                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 294                         i = tmp;
 295                         continue;
 296                 }
 297
 298                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 299                         i = tmp;
 300                         continue;
 301                 }
 302
 303                 if ((playlist = t->playlist()) == 0) {
 304                         i = tmp;
 305                         continue;
 306                 }
 307
 308                 if (dialog.request.cancel) {
 309                         /* we were cancelled */
 310                         dialog.status = 1;
 311                         return;
 312                 }
 313
 314                 Filter* fx;
 315
 316                 if (dialog.pitching) {
 317                         fx = new Pitch (*_session, dialog.request);
 318                 } else {
 319 #ifdef USE_RUBBERBAND
 320                         fx = new RBStretch (*_session, dialog.request);
 321 #else
 322                         fx = new STStretch (*_session, dialog.request);
 323 #endif
 324                 }
 325
 326                 if (fx->run (region)) {
 327                         dialog.status = -1;
 328                         dialog.request.done = true;
 329                         delete fx;
 330                         return;
 331                 }
 332
 333                 if (!fx->results.empty()) {
 334                         new_region = fx->results.front();
 335
 336                         if (!in_command) {
 337                                 _session->begin_reversible_command (dialog.pitching ? _("pitch shift") : _("time stretch"));
 338                                 in_command = true;
 339                         }
 340
 341                         playlist->clear_changes ();
 342                         playlist->replace_region (region, new_region, region->position());
 343                         _session->add_command (new StatefulDiffCommand (playlist));
 344                 }
 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