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 <cstdlib>
  21 #include <cmath>
  22
  23 #include <string>
  24
  25 #include <pbd/error.h>
  26 #include <pbd/pthread_utils.h>
  27 #include <pbd/memento_command.h>
  28
  29 #include <gtkmm2ext/window_title.h>
  30
  31 #include "editor.h"
  32 #include "audio_time_axis.h"
  33 #include "audio_region_view.h"
  34 #include "region_selection.h"
  35
  36 #include <ardour/session.h>
  37 #include <ardour/region.h>
  38 #include <ardour/audioplaylist.h>
  39 #include <ardour/audio_track.h>
  40 #include <ardour/audioregion.h>
  41 #include <ardour/audio_diskstream.h>
  42 #include <ardour/stretch.h>
  43 #include <ardour/pitch.h>
  44
  45 #include "i18n.h"
  46
  47 using namespace ARDOUR;
  48 using namespace PBD;
  49 using namespace sigc;
  50 using namespace Gtk;
  51 using namespace Gtkmm2ext;
  52
  53 Editor::TimeFXDialog::TimeFXDialog (Editor& e, bool pitch)
  54         : ArdourDialog (X_("time fx dialog")),
  55           editor (e),
  56           pitching (pitch),
  57           pitch_octave_adjustment (0.0, 0.0, 4.0, 1, 2.0),
  58           pitch_semitone_adjustment (0.0, 0.0, 12.0, 1.0, 4.0),
  59           pitch_cent_adjustment (0.0, 0.0, 150.0, 5.0, 15.0),
  60           pitch_octave_spinner (pitch_octave_adjustment),
  61           pitch_semitone_spinner (pitch_semitone_adjustment),
  62           pitch_cent_spinner (pitch_cent_adjustment),
  63           quick_button (_("Quick but Ugly")),
  64           antialias_button (_("Skip Anti-aliasing"))
  65 {
  66         set_modal (true);
  67         set_position (Gtk::WIN_POS_MOUSE);
  68         set_name (N_("TimeFXDialog"));
  69
  70         WindowTitle title(Glib::get_application_name());
  71         if (pitching) {
  72                 title += _("Pitch Shift");
  73         } else {
  74                 title += _("Time Stretch");
  75         }
  76         set_title(title.get_string());
  77
  78         cancel_button = add_button (_("Cancel"), Gtk::RESPONSE_CANCEL);
  79
  80         get_vbox()->set_spacing (5);
  81         get_vbox()->set_border_width (12);
  82         get_vbox()->pack_start (upper_button_box, false, false);
  83         get_vbox()->pack_start (progress_bar);
  84
  85         if (pitching) {
  86
  87                 upper_button_box.set_spacing (5);
  88                 upper_button_box.set_border_width (5);
  89
  90                 Gtk::Label* l;
  91
  92                 l = manage (new Label (_("Octaves")));
  93                 upper_button_box.pack_start (*l, false, false);
  94                 upper_button_box.pack_start (pitch_octave_spinner, false, false);
  95
  96                 l = manage (new Label (_("Semitones (12TET)")));
  97                 upper_button_box.pack_start (*l, false, false);
  98                 upper_button_box.pack_start (pitch_semitone_spinner, false, false);
  99
 100                 l = manage (new Label (_("Cents")));
 101                 upper_button_box.pack_start (*l, false, false);
 102                 upper_button_box.pack_start (pitch_cent_spinner, false, false);
 103
 104                 pitch_cent_spinner.set_digits (1);
 105
 106                 add_button (_("Shift"), Gtk::RESPONSE_ACCEPT);
 107
 108         } else {
 109
 110                 upper_button_box.set_homogeneous (true);
 111                 upper_button_box.set_spacing (5);
 112                 upper_button_box.set_border_width (5);
 113                 upper_button_box.pack_start (quick_button, true, true);
 114                 upper_button_box.pack_start (antialias_button, true, true);
 115
 116                 add_button (_("Stretch/Shrink"), Gtk::RESPONSE_ACCEPT);
 117         }
 118
 119         quick_button.set_name (N_("TimeFXButton"));
 120         antialias_button.set_name (N_("TimeFXButton"));
 121         progress_bar.set_name (N_("TimeFXProgress"));
 122
 123         show_all_children ();
 124 }
 125
 126 gint
 127 Editor::TimeFXDialog::update_progress ()
 128 {
 129         progress_bar.set_fraction (request.progress);
 130         return !request.done;
 131 }
 132
 133 void
 134 Editor::TimeFXDialog::cancel_in_progress ()
 135 {
 136         status = -2;
 137         request.cancel = true;
 138         first_cancel.disconnect();
 139 }
 140
 141 gint
 142 Editor::TimeFXDialog::delete_in_progress (GdkEventAny* ev)
 143 {
 144         status = -2;
 145         request.cancel = true;
 146         first_delete.disconnect();
 147         return TRUE;
 148 }
 149
 150 int
 151 Editor::time_stretch (RegionSelection& regions, float fraction)
 152 {
 153         return time_fx (regions, fraction, false);
 154 }
 155
 156 int
 157 Editor::pitch_shift (RegionSelection& regions, float fraction)
 158 {
 159         return time_fx (regions, fraction, true);
 160 }
 161
 162 int
 163 Editor::time_fx (RegionSelection& regions, float val, bool pitching)
 164 {
 165         if (current_timefx != 0) {
 166                 delete current_timefx;
 167         }
 168
 169         current_timefx = new TimeFXDialog (*this, pitching);
 170
 171         current_timefx->progress_bar.set_fraction (0.0f);
 172
 173         switch (current_timefx->run ()) {
 174         case RESPONSE_ACCEPT:
 175                 break;
 176         default:
 177                 current_timefx->hide ();
 178                 return 1;
 179         }
 180
 181         current_timefx->status = 0;
 182         current_timefx->regions = regions;
 183
 184         if (pitching) {
 185
 186                 float cents = current_timefx->pitch_octave_adjustment.get_value() * 1200.0;
 187                 cents += current_timefx->pitch_semitone_adjustment.get_value() * 100.0;
 188                 cents += current_timefx->pitch_cent_adjustment.get_value();
 189
 190                 if (cents == 0.0) {
 191                         // user didn't change anything
 192                         current_timefx->hide ();
 193                         return 0;
 194                 }
 195
 196                 // we now have the pitch shift in cents. divide by 1200 to get octaves
 197                 // then multiply by 2.0 because 1 octave == doubling the frequency
 198
 199                 cents /= 1200.0;
 200                 cents /= 2.0;
 201
 202                 // add 1.0 to convert to RB scale
 203
 204                 cents += 1.0;
 205
 206                 current_timefx->request.time_fraction = 1.0;
 207                 current_timefx->request.pitch_fraction = cents;
 208
 209         } else {
 210
 211                 current_timefx->request.time_fraction = val;
 212                 current_timefx->request.pitch_fraction = 1.0;
 213
 214         }
 215
 216         current_timefx->request.quick_seek = current_timefx->quick_button.get_active();
 217         current_timefx->request.antialias = !current_timefx->antialias_button.get_active();
 218         current_timefx->request.progress = 0.0f;
 219         current_timefx->request.done = false;
 220         current_timefx->request.cancel = false;
 221
 222         /* re-connect the cancel button and delete events */
 223
 224         current_timefx->first_cancel.disconnect();
 225         current_timefx->first_delete.disconnect();
 226
 227         current_timefx->first_cancel = current_timefx->cancel_button->signal_clicked().connect
 228                 (mem_fun (current_timefx, &TimeFXDialog::cancel_in_progress));
 229         current_timefx->first_delete = current_timefx->signal_delete_event().connect
 230                 (mem_fun (current_timefx, &TimeFXDialog::delete_in_progress));
 231
 232         if (pthread_create_and_store ("timefx", &current_timefx->request.thread, 0, timefx_thread, current_timefx)) {
 233                 current_timefx->hide ();
 234                 error << _("timefx cannot be started - thread creation error") << endmsg;
 235                 return -1;
 236         }
 237
 238         pthread_detach (current_timefx->request.thread);
 239
 240         sigc::connection c = Glib::signal_timeout().connect (mem_fun (current_timefx, &TimeFXDialog::update_progress), 100);
 241
 242         while (!current_timefx->request.done) {
 243                 gtk_main_iteration ();
 244         }
 245
 246         c.disconnect ();
 247
 248         current_timefx->hide ();
 249         return current_timefx->status;
 250 }
 251
 252 void
 253 Editor::do_timefx (TimeFXDialog& dialog)
 254 {
 255         Track*    t;
 256         boost::shared_ptr<Playlist> playlist;
 257         boost::shared_ptr<Region>   new_region;
 258         bool in_command = false;
 259
 260         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 261                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 262
 263                 if (!arv) {
 264                         continue;
 265                 }
 266
 267                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 268                 TimeAxisView* tv = &(arv->get_time_axis_view());
 269                 RouteTimeAxisView* rtv;
 270                 RegionSelection::iterator tmp;
 271
 272                 tmp = i;
 273                 ++tmp;
 274
 275                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 276                         i = tmp;
 277                         continue;
 278                 }
 279
 280                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 281                         i = tmp;
 282                         continue;
 283                 }
 284
 285                 if ((playlist = t->diskstream()->playlist()) == 0) {
 286                         i = tmp;
 287                         continue;
 288                 }
 289
 290                 if (dialog.request.cancel) {
 291                         /* we were cancelled */
 292                         dialog.status = 1;
 293                         return;
 294                 }
 295
 296                 Filter* fx;
 297
 298                 if (dialog.pitching) {
 299                         fx = new Pitch (*session, dialog.request);
 300                 } else {
 301                         fx = new Stretch (*session, dialog.request);
 302                 }
 303
 304                 if (fx->run (region)) {
 305                         dialog.status = -1;
 306                         dialog.request.done = true;
 307                         delete fx;
 308                         return;
 309                 }
 310
 311                 if (!fx->results.empty()) {
 312                         new_region = fx->results.front();
 313
 314                         if (!in_command) {
 315                                 begin_reversible_command (dialog.pitching ? _("pitch shift") : _("time stretch"));
 316                                 in_command = true;
 317                         }
 318
 319                         XMLNode &before = playlist->get_state();
 320                         playlist->replace_region (region, new_region, region->position());
 321                         XMLNode &after = playlist->get_state();
 322                         session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
 323                 }
 324
 325                 i = tmp;
 326                 delete fx;
 327         }
 328
 329         if (in_command) {
 330                 commit_reversible_command ();
 331         }
 332
 333         dialog.status = 0;
 334         dialog.request.done = true;
 335 }
 336
 337 void*
 338 Editor::timefx_thread (void *arg)
 339 {
 340         PBD::ThreadCreated (pthread_self(), X_("TimeFX"));
 341
 342         TimeFXDialog* tsd = static_cast<TimeFXDialog*>(arg);
 343
 344         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 345
 346         tsd->editor.do_timefx (*tsd);
 347
 348         return 0;
 349 }
 350