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
  44 #include "i18n.h"
  45
  46 using namespace ARDOUR;
  47 using namespace PBD;
  48 using namespace sigc;
  49 using namespace Gtk;
  50 using namespace Gtkmm2ext;
  51
  52 Editor::TimeStretchDialog::TimeStretchDialog (Editor& e)
  53         : ArdourDialog ("time stretch dialog"),
  54           editor (e),
  55           quick_button (_("Quick but Ugly")),
  56           antialias_button (_("Skip Anti-aliasing"))
  57 {
  58         set_modal (true);
  59         set_position (Gtk::WIN_POS_MOUSE);
  60         set_name (N_("TimeStretchDialog"));
  61
  62         WindowTitle title(Glib::get_application_name());
  63         title += _("Timestretch");
  64         set_title(title.get_string());
  65
  66         get_vbox()->set_spacing (5);
  67         get_vbox()->set_border_width (5);
  68         get_vbox()->pack_start (upper_button_box);
  69         get_vbox()->pack_start (progress_bar);
  70
  71         upper_button_box.set_homogeneous (true);
  72         upper_button_box.set_spacing (5);
  73         upper_button_box.set_border_width (5);
  74         upper_button_box.pack_start (quick_button, true, true);
  75         upper_button_box.pack_start (antialias_button, true, true);
  76
  77         action_button = add_button (_("Stretch/Shrink it"), Gtk::RESPONSE_ACCEPT);
  78         cancel_button = add_button (_("Cancel"), Gtk::RESPONSE_CANCEL);
  79
  80         quick_button.set_name (N_("TimeStretchButton"));
  81         antialias_button.set_name (N_("TimeStretchButton"));
  82         progress_bar.set_name (N_("TimeStretchProgress"));
  83
  84         show_all_children ();
  85 }
  86
  87 gint
  88 Editor::TimeStretchDialog::update_progress ()
  89 {
  90         progress_bar.set_fraction (request.progress);
  91         return !request.done;
  92 }
  93
  94 void
  95 Editor::TimeStretchDialog::cancel_timestretch_in_progress ()
  96 {
  97         status = -2;
  98         request.cancel = true;
  99         first_cancel.disconnect();
 100 }
 101
 102 gint
 103 Editor::TimeStretchDialog::delete_timestretch_in_progress (GdkEventAny* ev)
 104 {
 105         status = -2;
 106         request.cancel = true;
 107         first_delete.disconnect();
 108         return TRUE;
 109 }
 110
 111 int
 112 Editor::run_timestretch (RegionSelection& regions, float fraction)
 113 {
 114         if (current_timestretch == 0) {
 115                 current_timestretch = new TimeStretchDialog (*this);
 116         }
 117
 118         current_timestretch->progress_bar.set_fraction (0.0f);
 119
 120         switch (current_timestretch->run ()) {
 121         case RESPONSE_ACCEPT:
 122                 break;
 123         default:
 124                 current_timestretch->hide ();
 125                 return 1;
 126         }
 127
 128         current_timestretch->status = 0;
 129         current_timestretch->regions = regions;
 130         current_timestretch->request.fraction = fraction;
 131         current_timestretch->request.quick_seek = current_timestretch->quick_button.get_active();
 132         current_timestretch->request.antialias = !current_timestretch->antialias_button.get_active();
 133         current_timestretch->request.progress = 0.0f;
 134         current_timestretch->request.done = false;
 135         current_timestretch->request.cancel = false;
 136
 137         /* re-connect the cancel button and delete events */
 138
 139         current_timestretch->first_cancel.disconnect();
 140         current_timestretch->first_delete.disconnect();
 141
 142         current_timestretch->first_cancel = current_timestretch->cancel_button->signal_clicked().connect
 143                 (mem_fun (current_timestretch, &TimeStretchDialog::cancel_timestretch_in_progress));
 144         current_timestretch->first_delete = current_timestretch->signal_delete_event().connect
 145                 (mem_fun (current_timestretch, &TimeStretchDialog::delete_timestretch_in_progress));
 146
 147         if (pthread_create_and_store ("timestretch", &current_timestretch->request.thread, 0, timestretch_thread, current_timestretch)) {
 148                 current_timestretch->hide ();
 149                 error << _("timestretch cannot be started - thread creation error") << endmsg;
 150                 return -1;
 151         }
 152
 153         pthread_detach (current_timestretch->request.thread);
 154
 155         sigc::connection c = Glib::signal_timeout().connect (mem_fun (current_timestretch, &TimeStretchDialog::update_progress), 100);
 156
 157         while (!current_timestretch->request.done) {
 158                 gtk_main_iteration ();
 159         }
 160
 161         c.disconnect ();
 162
 163         current_timestretch->hide ();
 164         return current_timestretch->status;
 165 }
 166
 167 void
 168 Editor::do_timestretch (TimeStretchDialog& dialog)
 169 {
 170         Track*    t;
 171         boost::shared_ptr<Playlist> playlist;
 172         boost::shared_ptr<Region>   new_region;
 173
 174         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 175                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 176                 if (!arv)
 177                         continue;
 178
 179                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 180                 TimeAxisView* tv = &(arv->get_time_axis_view());
 181                 RouteTimeAxisView* rtv;
 182                 RegionSelection::iterator tmp;
 183
 184                 tmp = i;
 185                 ++tmp;
 186
 187                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 188                         i = tmp;
 189                         continue;
 190                 }
 191
 192                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 193                         i = tmp;
 194                         continue;
 195                 }
 196
 197                 if ((playlist = t->diskstream()->playlist()) == 0) {
 198                         i = tmp;
 199                         continue;
 200                 }
 201
 202                 if (dialog.request.cancel) {
 203                         /* we were cancelled */
 204                         dialog.status = 1;
 205                         return;
 206                 }
 207
 208                 Stretch stretch (*session, dialog.request);
 209
 210                 if (stretch.run (region)) {
 211                         dialog.status = -1;
 212                         dialog.request.done = true;
 213                         return;
 214                 }
 215
 216                 if (!stretch.results.empty()) {
 217                         new_region = stretch.results.front();
 218
 219                         XMLNode &before = playlist->get_state();
 220                         playlist->replace_region (region, new_region, region->position());
 221                         XMLNode &after = playlist->get_state();
 222                         session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
 223                 }
 224
 225                 i = tmp;
 226         }
 227
 228         dialog.status = 0;
 229         dialog.request.done = true;
 230 }
 231
 232 void*
 233 Editor::timestretch_thread (void *arg)
 234 {
 235         PBD::ThreadCreated (pthread_self(), X_("TimeFX"));
 236
 237         TimeStretchDialog* tsd = static_cast<TimeStretchDialog*>(arg);
 238
 239         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 240
 241         tsd->editor.do_timestretch (*tsd);
 242
 243         return 0;
 244 }
 245