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