gtk2_ardour/strip_silence_dialog.cc

   1 /*
   2     Copyright (C) 2009 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 <iostream>
  21
  22 #include <gtkmm/table.h>
  23 #include <gtkmm/label.h>
  24 #include <gtkmm/stock.h>
  25 #include "ardour/audioregion.h"
  26 #include "ardour/audiosource.h"
  27
  28 #include "ardour/dB.h"
  29 #include "ardour_ui.h"
  30 #include "ardour/session.h"
  31
  32 #include "gui_thread.h"
  33 #include "strip_silence_dialog.h"
  34 #include "canvas_impl.h"
  35 #include "region_view.h"
  36 #include "simpleline.h"
  37 #include "waveview.h"
  38 #include "simplerect.h"
  39 #include "rgb_macros.h"
  40 #include "i18n.h"
  41 #include "logmeter.h"
  42
  43 using namespace ARDOUR;
  44 using namespace std;
  45 using namespace ArdourCanvas;
  46
  47 /** Construct Strip silence dialog box */
  48 StripSilenceDialog::StripSilenceDialog (Session* s, list<RegionView*> const & v)
  49         : ArdourDialog (_("Strip Silence"))
  50         , ProgressReporter ()
  51         , _minimum_length (X_("silence duration"), true, "SilenceDurationClock", true, false, true, false)
  52         , _fade_length (X_("silence duration"), true, "SilenceDurationClock", true, false, true, false)
  53         , _peaks_ready_connection (0)
  54         , _destroying (false)
  55 {
  56         set_session (s);
  57
  58         for (list<RegionView*>::const_iterator r = v.begin(); r != v.end(); ++r) {
  59                 views.push_back (ViewInterval (*r));
  60         }
  61
  62         Gtk::HBox* hbox = Gtk::manage (new Gtk::HBox);
  63
  64         Gtk::Table* table = Gtk::manage (new Gtk::Table (3, 3));
  65         table->set_spacings (6);
  66
  67         int n = 0;
  68
  69         table->attach (*Gtk::manage (new Gtk::Label (_("Threshold"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
  70         table->attach (_threshold, 1, 2, n, n + 1, Gtk::FILL);
  71         table->attach (*Gtk::manage (new Gtk::Label (_("dbFS"))), 2, 3, n, n + 1, Gtk::FILL);
  72         ++n;
  73
  74         _threshold.set_digits (1);
  75         _threshold.set_increments (1, 10);
  76         _threshold.set_range (-120, 0);
  77         _threshold.set_value (-60);
  78
  79         table->attach (*Gtk::manage (new Gtk::Label (_("Minimum length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
  80         table->attach (_minimum_length, 1, 2, n, n + 1, Gtk::FILL);
  81         ++n;
  82
  83         _minimum_length.set_session (s);
  84         _minimum_length.set_mode (AudioClock::Frames);
  85         _minimum_length.set (1000, true);
  86
  87         table->attach (*Gtk::manage (new Gtk::Label (_("Fade length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
  88         table->attach (_fade_length, 1, 2, n, n + 1, Gtk::FILL);
  89         ++n;
  90
  91         _fade_length.set_session (s);
  92         _fade_length.set_mode (AudioClock::Frames);
  93         _fade_length.set (64, true);
  94
  95         hbox->pack_start (*table);
  96
  97         get_vbox()->pack_start (*hbox, false, false);
  98
  99         add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
 100         add_button (Gtk::Stock::APPLY, Gtk::RESPONSE_OK);
 101
 102         get_vbox()->pack_start (_progress_bar, true, true, 12);
 103
 104         show_all ();
 105
 106         _threshold.get_adjustment()->signal_value_changed().connect (sigc::mem_fun (*this, &StripSilenceDialog::threshold_changed));
 107         _minimum_length.ValueChanged.connect (sigc::mem_fun (*this, &StripSilenceDialog::restart_thread));
 108
 109         update_silence_rects ();
 110         update_threshold_line ();
 111
 112         /* Create a thread which runs while the dialogue is open to compute the silence regions */
 113         Completed.connect (_completed_connection, MISSING_INVALIDATOR, ui_bind (&StripSilenceDialog::update, this), gui_context ());
 114         _thread_should_finish = false;
 115         pthread_create (&_thread, 0, StripSilenceDialog::_detection_thread_work, this);
 116 }
 117
 118
 119 StripSilenceDialog::~StripSilenceDialog ()
 120 {
 121         _destroying = true;
 122
 123         /* Terminate our thread */
 124
 125         _lock.lock ();
 126         _interthread_info.cancel = true;
 127         _thread_should_finish = true;
 128         _lock.unlock ();
 129
 130         _run_cond.signal ();
 131         pthread_join (_thread, 0);
 132
 133         delete _peaks_ready_connection;
 134 }
 135
 136 void
 137 StripSilenceDialog::silences (AudioIntervalMap& m)
 138 {
 139         for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
 140                 pair<boost::shared_ptr<Region>,AudioIntervalResult> newpair (v->view->region(), v->intervals);
 141                 m.insert (newpair);
 142         }
 143 }
 144
 145 void
 146 StripSilenceDialog::drop_rects ()
 147 {
 148         for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
 149                 v->view->drop_silent_frames ();
 150         }
 151 }
 152
 153 void
 154 StripSilenceDialog::update_threshold_line ()
 155 {
 156 #if 0
 157         int n = 0;
 158
 159         /* Don't need to lock here as we're not reading the _waves silence details */
 160
 161         for (list<Wave*>::iterator i = _waves.begin(); i != _waves.end(); ++i) {
 162                 (*i)->threshold_line->property_x1() = 0;
 163                 (*i)->threshold_line->property_x2() = _wave_width;
 164
 165                 double const y = alt_log_meter (_threshold.get_value());
 166
 167                 (*i)->threshold_line->property_y1() = (n + 1 - y) * _wave_height;
 168                 (*i)->threshold_line->property_y2() = (n + 1 - y) * _wave_height;
 169         }
 170
 171         ++n;
 172 #endif
 173 }
 174
 175 void
 176 StripSilenceDialog::update ()
 177 {
 178         update_threshold_line ();
 179         update_silence_rects ();
 180 }
 181
 182 void
 183 StripSilenceDialog::update_silence_rects ()
 184 {
 185         /* Lock so that we don't contend with the detection thread for access to the silence regions */
 186         Glib::Mutex::Lock lm (_lock);
 187         double const y = _threshold.get_value();
 188
 189         for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
 190                 v->view->set_silent_frames (v->intervals, y);
 191         }
 192 }
 193
 194 void *
 195 StripSilenceDialog::_detection_thread_work (void* arg)
 196 {
 197         StripSilenceDialog* d = reinterpret_cast<StripSilenceDialog*> (arg);
 198         return d->detection_thread_work ();
 199 }
 200
 201 /** Body of our silence detection thread */
 202 void *
 203 StripSilenceDialog::detection_thread_work ()
 204 {
 205         ARDOUR_UI::instance()->register_thread ("gui", pthread_self(), "silence", 32);
 206
 207         /* Hold this lock when we are doing work */
 208         _lock.lock ();
 209
 210         while (1) {
 211                 for (list<ViewInterval>::iterator i = views.begin(); i != views.end(); ++i) {
 212                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i).view->region());
 213
 214                         if (ar) {
 215                                 i->intervals = ar->find_silence (dB_to_coefficient (threshold ()), minimum_length (), _interthread_info);
 216                         }
 217
 218                         if (_interthread_info.cancel) {
 219                                 break;
 220                         }
 221                 }
 222
 223                 if (!_interthread_info.cancel) {
 224                         Completed (); /* EMIT SIGNAL */
 225                 }
 226
 227                 /* Our work is done; sleep until there is more to do.
 228                  * The lock is released while we are waiting.
 229                  */
 230                 _run_cond.wait (_lock);
 231
 232                 if (_thread_should_finish) {
 233                         _lock.unlock ();
 234                         return 0;
 235                 }
 236         }
 237
 238         return 0;
 239 }
 240
 241 void
 242 StripSilenceDialog::restart_thread ()
 243 {
 244         if (_destroying) {
 245                 /* I don't know how this happens, but it seems to be possible for this
 246                    method to be called after our destructor has finished executing.
 247                    If this happens, bad things follow; _lock cannot be locked and
 248                    Ardour hangs.  So if we are destroying, just bail early.
 249                 */
 250                 return;
 251         }
 252
 253         /* Cancel any current run */
 254         _interthread_info.cancel = true;
 255
 256         /* Block until the thread waits() */
 257         _lock.lock ();
 258         /* Reset the flag */
 259         _interthread_info.cancel = false;
 260         _lock.unlock ();
 261
 262         /* And re-awake the thread */
 263         _run_cond.signal ();
 264 }
 265
 266 void
 267 StripSilenceDialog::threshold_changed ()
 268 {
 269         update_threshold_line ();
 270         restart_thread ();
 271 }
 272
 273 framecnt_t
 274 StripSilenceDialog::minimum_length () const
 275 {
 276         return _minimum_length.current_duration (views.front().view->region()->position());
 277 }
 278
 279 framecnt_t
 280 StripSilenceDialog::fade_length () const
 281 {
 282         return _fade_length.current_duration (views.front().view->region()->position());
 283 }
 284
 285 void
 286 StripSilenceDialog::update_progress_gui (float p)
 287 {
 288         _progress_bar.set_fraction (p);
 289 }