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     $Id$
  19 */
  20
  21 #include <cstdlib>
  22 #include <cmath>
  23
  24 #include <string>
  25
  26 #include <pbd/error.h>
  27 #include <pbd/pthread_utils.h>
  28 #include <pbd/memento_command.h>
  29
  30 #include "editor.h"
  31 #include "audio_time_axis.h"
  32 #include "audio_region_view.h"
  33 #include "region_selection.h"
  34
  35 #include <ardour/session.h>
  36 #include <ardour/region.h>
  37 #include <ardour/audioplaylist.h>
  38 #include <ardour/audio_track.h>
  39 #include <ardour/audioregion.h>
  40 #include <ardour/audio_diskstream.h>
  41
  42 #include "i18n.h"
  43
  44 using namespace ARDOUR;
  45 using namespace PBD;
  46 using namespace sigc;
  47 using namespace Gtk;
  48
  49 Editor::TimeStretchDialog::TimeStretchDialog (Editor& e)
  50         : ArdourDialog ("time stretch dialog"),
  51           editor (e),
  52           quick_button (_("Quick but Ugly")),
  53           antialias_button (_("Skip Anti-aliasing"))
  54 {
  55         set_modal (true);
  56         set_position (Gtk::WIN_POS_MOUSE);
  57         set_title (_("ardour: timestretch"));
  58         set_name (N_("TimeStretchDialog"));
  59
  60         get_vbox()->set_spacing (5);
  61         get_vbox()->set_border_width (5);
  62         get_vbox()->pack_start (upper_button_box);
  63         get_vbox()->pack_start (progress_bar);
  64
  65         upper_button_box.set_homogeneous (true);
  66         upper_button_box.set_spacing (5);
  67         upper_button_box.set_border_width (5);
  68         upper_button_box.pack_start (quick_button, true, true);
  69         upper_button_box.pack_start (antialias_button, true, true);
  70
  71         action_button = add_button (_("Stretch/Shrink it"), Gtk::RESPONSE_ACCEPT);
  72         cancel_button = add_button (_("Cancel"), Gtk::RESPONSE_CANCEL);
  73
  74         quick_button.set_name (N_("TimeStretchButton"));
  75         antialias_button.set_name (N_("TimeStretchButton"));
  76         progress_bar.set_name (N_("TimeStretchProgress"));
  77
  78         show_all_children ();
  79 }
  80
  81 gint
  82 Editor::TimeStretchDialog::update_progress ()
  83 {
  84         progress_bar.set_fraction (request.progress);
  85         return request.running;
  86 }
  87
  88 void
  89 Editor::TimeStretchDialog::cancel_timestretch_in_progress ()
  90 {
  91         status = -2;
  92         request.running = false;
  93 }
  94
  95 gint
  96 Editor::TimeStretchDialog::delete_timestretch_in_progress (GdkEventAny* ev)
  97 {
  98         status = -2;
  99         request.running = false;
 100         return TRUE;
 101 }
 102
 103 int
 104 Editor::run_timestretch (RegionSelection& regions, float fraction)
 105 {
 106         pthread_t thread;
 107
 108         if (current_timestretch == 0) {
 109                 current_timestretch = new TimeStretchDialog (*this);
 110         }
 111
 112         current_timestretch->progress_bar.set_fraction (0.0f);
 113
 114         switch (current_timestretch->run ()) {
 115         case RESPONSE_ACCEPT:
 116                 break;
 117         default:
 118                 current_timestretch->hide ();
 119                 return 1;
 120         }
 121
 122         current_timestretch->status = 0;
 123         current_timestretch->regions = regions;
 124         current_timestretch->request.fraction = fraction;
 125         current_timestretch->request.quick_seek = current_timestretch->quick_button.get_active();
 126         current_timestretch->request.antialias = !current_timestretch->antialias_button.get_active();
 127         current_timestretch->request.progress = 0.0f;
 128         current_timestretch->request.running = true;
 129
 130         /* re-connect the cancel button and delete events */
 131
 132         current_timestretch->first_cancel.disconnect();
 133         current_timestretch->first_delete.disconnect();
 134
 135         current_timestretch->cancel_button->signal_clicked().connect (mem_fun (current_timestretch, &TimeStretchDialog::cancel_timestretch_in_progress));
 136         current_timestretch->signal_delete_event().connect (mem_fun (current_timestretch, &TimeStretchDialog::delete_timestretch_in_progress));
 137
 138         if (pthread_create_and_store ("timestretch", &thread, 0, timestretch_thread, current_timestretch)) {
 139                 current_timestretch->hide ();
 140                 error << _("timestretch cannot be started - thread creation error") << endmsg;
 141                 return -1;
 142         }
 143
 144         pthread_detach (thread);
 145
 146         sigc::connection c = Glib::signal_timeout().connect (mem_fun (current_timestretch, &TimeStretchDialog::update_progress), 100);
 147
 148         while (current_timestretch->request.running) {
 149                 gtk_main_iteration ();
 150         }
 151
 152         c.disconnect ();
 153
 154         current_timestretch->hide ();
 155         return current_timestretch->status;
 156 }
 157
 158 void
 159 Editor::do_timestretch (TimeStretchDialog& dialog)
 160 {
 161         Track*    t;
 162         Playlist* playlist;
 163         boost::shared_ptr<Region>   new_region;
 164
 165         for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 166                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
 167                 if (!arv)
 168                         continue;
 169
 170                 boost::shared_ptr<AudioRegion> region (arv->audio_region());
 171                 TimeAxisView* tv = &(arv->get_time_axis_view());
 172                 RouteTimeAxisView* rtv;
 173                 RegionSelection::iterator tmp;
 174
 175                 tmp = i;
 176                 ++tmp;
 177
 178                 if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
 179                         i = tmp;
 180                         continue;
 181                 }
 182
 183                 if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
 184                         i = tmp;
 185                         continue;
 186                 }
 187
 188                 if ((playlist = t->diskstream()->playlist()) == 0) {
 189                         i = tmp;
 190                         continue;
 191                 }
 192
 193                 dialog.request.region = region;
 194
 195                 if (!dialog.request.running) {
 196                         /* we were cancelled */
 197                         dialog.status = 1;
 198                         return;
 199                 }
 200
 201                 if ((new_region = session->tempoize_region (dialog.request)) == 0) {
 202                         dialog.status = -1;
 203                         dialog.request.running = false;
 204                         return;
 205                 }
 206
 207                 XMLNode &before = playlist->get_state();
 208                 playlist->replace_region (region, new_region, region->position());
 209                 XMLNode &after = playlist->get_state();
 210                 session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
 211
 212                 i = tmp;
 213         }
 214
 215         dialog.status = 0;
 216         dialog.request.running = false;
 217         dialog.request.region.reset ();
 218 }
 219
 220 void*
 221 Editor::timestretch_thread (void *arg)
 222 {
 223         PBD::ThreadCreated (pthread_self(), X_("TimeFX"));
 224
 225         TimeStretchDialog* tsd = static_cast<TimeStretchDialog*>(arg);
 226
 227         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 228
 229         tsd->editor.do_timestretch (*tsd);
 230
 231         return 0;
 232 }
 233