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           cancel_button (_("Cancel")),
  53           action_button (_("Stretch/Shrink it"))
  54 {
  55         set_modal (true);
  56         set_position (GTK_WIN_POS_MOUSE);
  57         set_title (_("ardour: timestretch"));
  58         set_name (N_("TimeStretchDialog"));
  59
  60         set_hide_on_stop (false);
  61
  62         add (packer);
  63
  64         packer.set_spacing (5);
  65         packer.set_border_width (5);
  66         packer.pack_start (upper_button_box);
  67         packer.pack_start (progress_bar);
  68         packer.pack_start (lower_button_box);
  69
  70         upper_button_box.set_homogeneous (true);
  71         upper_button_box.set_spacing (5);
  72         upper_button_box.set_border_width (5);
  73         upper_button_box.pack_start (quick_button, true, true);
  74         upper_button_box.pack_start (antialias_button, true, true);
  75
  76         lower_button_box.set_homogeneous (true);
  77         lower_button_box.set_spacing (5);
  78         lower_button_box.set_border_width (5);
  79         lower_button_box.pack_start (action_button, true, true);
  80         lower_button_box.pack_start (cancel_button, true, true);
  81
  82         action_button.set_name (N_("TimeStretchButton"));
  83         cancel_button.set_name (N_("TimeStretchButton"));
  84         quick_button.set_name (N_("TimeStretchButton"));
  85         antialias_button.set_name (N_("TimeStretchButton"));
  86         progress_bar.set_name (N_("TimeStretchProgress"));
  87
  88         action_button.clicked.connect (bind (slot (*this, &ArdourDialog::stop), 1));
  89 }
  90
  91 gint
  92 Editor::TimeStretchDialog::update_progress ()
  93 {
  94         progress_bar.set_percentage (request.progress);
  95         return request.running;
  96 }
  97
  98 void
  99 Editor::TimeStretchDialog::cancel_timestretch_in_progress ()
 100 {
 101         status = -2;
 102         request.running = false;
 103 }
 104
 105 gint
 106 Editor::TimeStretchDialog::delete_timestretch_in_progress (GdkEventAny* ev)
 107 {
 108         status = -2;
 109         request.running = false;
 110         return TRUE;
 111 }
 112
 113 int
 114 Editor::run_timestretch (AudioRegionSelection& regions, float fraction)
 115 {
 116         pthread_t thread;
 117
 118         if (current_timestretch == 0) {
 119                 current_timestretch = new TimeStretchDialog (*this);
 120         }
 121
 122         current_timestretch->progress_bar.set_percentage (0.0f);
 123         current_timestretch->first_cancel = current_timestretch->cancel_button.clicked.connect (bind (slot (*current_timestretch, &ArdourDialog::stop), -1));
 124         current_timestretch->first_delete = current_timestretch->delete_event.connect (slot (*current_timestretch, &ArdourDialog::wm_close_event));
 125
 126         current_timestretch->run ();
 127
 128         if (current_timestretch->run_status() != 1) {
 129                 current_timestretch->close ();
 130                 return 1; /* no error, but we did nothing */
 131         }
 132
 133         current_timestretch->status = 0;
 134         current_timestretch->regions = regions;
 135         current_timestretch->request.fraction = fraction;
 136         current_timestretch->request.quick_seek = current_timestretch->quick_button.get_active();
 137         current_timestretch->request.antialias = !current_timestretch->antialias_button.get_active();
 138         current_timestretch->request.progress = 0.0f;
 139         current_timestretch->request.running = true;
 140
 141         /* re-connect the cancel button and delete events */
 142
 143         current_timestretch->first_cancel.disconnect();
 144         current_timestretch->first_delete.disconnect();
 145
 146         current_timestretch->cancel_button.clicked.connect (slot (current_timestretch, &TimeStretchDialog::cancel_timestretch_in_progress));
 147         current_timestretch->delete_event.connect (slot (current_timestretch, &TimeStretchDialog::delete_timestretch_in_progress));
 148
 149         if (pthread_create_and_store ("timestretch", &thread, 0, timestretch_thread, current_timestretch)) {
 150                 current_timestretch->close ();
 151                 error << _("timestretch cannot be started - thread creation error") << endmsg;
 152                 return -1;
 153         }
 154
 155         pthread_detach (thread);
 156
 157         SigC::Connection c = Main::timeout.connect (slot (current_timestretch, &TimeStretchDialog::update_progress), 100);
 158
 159         while (current_timestretch->request.running) {
 160                 gtk_main_iteration ();
 161         }
 162
 163         c.disconnect ();
 164
 165         current_timestretch->close ();
 166         return current_timestretch->status;
 167 }
 168
 169 void
 170 Editor::do_timestretch (TimeStretchDialog& dialog)
 171 {
 172         AudioTrack* at;
 173         Playlist* playlist;
 174         AudioRegion* new_region;
 175
 176         for (AudioRegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
 177
 178                 AudioRegion& aregion ((*i)->region);
 179                 TimeAxisView* tv = &(*i)->get_time_axis_view();
 180                 AudioTimeAxisView* atv;
 181                 AudioRegionSelection::iterator tmp;
 182
 183                 tmp = i;
 184                 ++tmp;
 185
 186                 if ((atv = dynamic_cast<AudioTimeAxisView*> (tv)) == 0) {
 187                         i = tmp;
 188                         continue;
 189                 }
 190
 191                 if ((at = dynamic_cast<AudioTrack*> (&atv->route())) == 0) {
 192                         i = tmp;
 193                         continue;
 194                 }
 195
 196                 if ((playlist = at->disk_stream().playlist()) == 0) {
 197                         i = tmp;
 198                         continue;
 199                 }
 200
 201                 dialog.request.region = &aregion;
 202
 203                 if (!dialog.request.running) {
 204                         /* we were cancelled */
 205                         dialog.status = 1;
 206                         return;
 207                 }
 208
 209                 if ((new_region = session->tempoize_region (dialog.request)) == 0) {
 210                         dialog.status = -1;
 211                         dialog.request.running = false;
 212                         return;
 213                 }
 214
 215                 session->add_undo (playlist->get_memento());
 216                 playlist->replace_region (aregion, *new_region, aregion.position());
 217                 session->add_redo_no_execute (playlist->get_memento());
 218
 219                 i = tmp;
 220         }
 221
 222         dialog.status = 0;
 223         dialog.request.running = false;
 224 }
 225
 226 void*
 227 Editor::timestretch_thread (void *arg)
 228 {
 229         PBD::ThreadCreated (pthread_self(), X_("TimeFX"));
 230
 231         TimeStretchDialog* tsd = static_cast<TimeStretchDialog*>(arg);
 232
 233         pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
 234
 235         tsd->editor.do_timestretch (*tsd);
 236
 237         return 0;
 238 }
 239