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