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 "audio_clock.h"
  33 #include "gui_thread.h"
  34 #include "strip_silence_dialog.h"
  35 #include "canvas_impl.h"
  36 #include "region_view.h"
  37 #include "simpleline.h"
  38 #include "waveview.h"
  39 #include "simplerect.h"
  40 #include "rgb_macros.h"
  41 #include "i18n.h"
  42 #include "logmeter.h"
  43
  44 using namespace ARDOUR;
  45 using namespace std;
  46 using namespace ArdourCanvas;
  47
  48 /** Construct Strip silence dialog box */
  49 StripSilenceDialog::StripSilenceDialog (Session* s, list<RegionView*> const & v)
  50         : ArdourDialog (_("Strip Silence"))
  51         , ProgressReporter ()
  52         , _minimum_length (new AudioClock (X_("silence duration"), true, "SilenceDurationClock", true, false, true, false))
  53         , _fade_length (new AudioClock (X_("silence duration"), true, "SilenceDurationClock", true, false, true, false))
  54         , _peaks_ready_connection (0)
  55         , _destroying (false)
  56 {
  57         set_session (s);
  58
  59         for (list<RegionView*>::const_iterator r = v.begin(); r != v.end(); ++r) {
  60                 views.push_back (ViewInterval (*r));
  61         }
  62
  63         Gtk::HBox* hbox = Gtk::manage (new Gtk::HBox);
  64
  65         Gtk::Table* table = Gtk::manage (new Gtk::Table (3, 3));
  66         table->set_spacings (6);
  67
  68         int n = 0;
  69
  70         table->attach (*Gtk::manage (new Gtk::Label (_("Threshold"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
  71         table->attach (_threshold, 1, 2, n, n + 1, Gtk::FILL);
  72         table->attach (*Gtk::manage (new Gtk::Label (_("dbFS"))), 2, 3, n, n + 1, Gtk::FILL);
  73         ++n;
  74
  75         _threshold.set_digits (1);
  76         _threshold.set_increments (1, 10);
  77         _threshold.set_range (-120, 0);
  78         _threshold.set_value (-60);
  79
  80         table->attach (*Gtk::manage (new Gtk::Label (_("Minimum length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
  81         table->attach (*_minimum_length, 1, 2, n, n + 1, Gtk::FILL);
  82         ++n;
  83
  84         _minimum_length->set_session (s);
  85         _minimum_length->set_mode (AudioClock::Frames);
  86         _minimum_length->set (1000, true);
  87
  88         table->attach (*Gtk::manage (new Gtk::Label (_("Fade length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
  89         table->attach (*_fade_length, 1, 2, n, n + 1, Gtk::FILL);
  90         ++n;
  91
  92         _fade_length->set_session (s);
  93         _fade_length->set_mode (AudioClock::Frames);
  94         _fade_length->set (64, true);
  95
  96         hbox->pack_start (*table);
  97
  98         get_vbox()->pack_start (*hbox, false, false);
  99
 100         add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
 101         add_button (Gtk::Stock::APPLY, Gtk::RESPONSE_OK);
 102
 103         get_vbox()->pack_start (_progress_bar, true, true, 12);
 104
 105         show_all ();
 106
 107         _threshold.get_adjustment()->signal_value_changed().connect (sigc::mem_fun (*this, &StripSilenceDialog::threshold_changed));
 108         _minimum_length->ValueChanged.connect (sigc::mem_fun (*this, &StripSilenceDialog::restart_thread));
 109
 110         update_silence_rects ();
 111         update_threshold_line ();
 112
 113         /* Create a thread which runs while the dialogue is open to compute the silence regions */
 114         Completed.connect (_completed_connection, MISSING_INVALIDATOR, ui_bind (&StripSilenceDialog::update, this), gui_context ());
 115         _thread_should_finish = false;
 116         pthread_create (&_thread, 0, StripSilenceDialog::_detection_thread_work, this);
 117 }
 118
 119
 120 StripSilenceDialog::~StripSilenceDialog ()
 121 {
 122         _destroying = true;
 123
 124         /* Terminate our thread */
 125
 126         _lock.lock ();
 127         _interthread_info.cancel = true;
 128         _thread_should_finish = true;
 129         _lock.unlock ();
 130
 131         _run_cond.signal ();
 132         pthread_join (_thread, 0);
 133
 134         delete _minimum_length;
 135         delete _fade_length;
 136
 137         delete _peaks_ready_connection;
 138 }
 139
 140 void
 141 StripSilenceDialog::silences (AudioIntervalMap& m)
 142 {
 143         for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
 144                 pair<boost::shared_ptr<Region>,AudioIntervalResult> newpair (v->view->region(), v->intervals);
 145                 m.insert (newpair);
 146         }
 147 }
 148
 149 void
 150 StripSilenceDialog::drop_rects ()
 151 {
 152         for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
 153                 v->view->drop_silent_frames ();
 154         }
 155 }
 156
 157 void
 158 StripSilenceDialog::update_threshold_line ()
 159 {
 160 #if 0
 161         int n = 0;
 162
 163         /* Don't need to lock here as we're not reading the _waves silence details */
 164
 165         for (list<Wave*>::iterator i = _waves.begin(); i != _waves.end(); ++i) {
 166                 (*i)->threshold_line->property_x1() = 0;
 167                 (*i)->threshold_line->property_x2() = _wave_width;
 168
 169                 double const y = alt_log_meter (_threshold.get_value());
 170
 171                 (*i)->threshold_line->property_y1() = (n + 1 - y) * _wave_height;
 172                 (*i)->threshold_line->property_y2() = (n + 1 - y) * _wave_height;
 173         }
 174
 175         ++n;
 176 #endif
 177 }
 178
 179 void
 180 StripSilenceDialog::update ()
 181 {
 182         update_threshold_line ();
 183         update_silence_rects ();
 184 }
 185
 186 void
 187 StripSilenceDialog::update_silence_rects ()
 188 {
 189         /* Lock so that we don't contend with the detection thread for access to the silence regions */
 190         Glib::Mutex::Lock lm (_lock);
 191         double const y = _threshold.get_value();
 192
 193         for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
 194                 v->view->set_silent_frames (v->intervals, y);
 195         }
 196 }
 197
 198 void *
 199 StripSilenceDialog::_detection_thread_work (void* arg)
 200 {
 201         StripSilenceDialog* d = reinterpret_cast<StripSilenceDialog*> (arg);
 202         return d->detection_thread_work ();
 203 }
 204
 205 /** Body of our silence detection thread */
 206 void *
 207 StripSilenceDialog::detection_thread_work ()
 208 {
 209         ARDOUR_UI::instance()->register_thread ("gui", pthread_self(), "silence", 32);
 210
 211         /* Hold this lock when we are doing work */
 212         _lock.lock ();
 213
 214         while (1) {
 215                 for (list<ViewInterval>::iterator i = views.begin(); i != views.end(); ++i) {
 216                         boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i).view->region());
 217
 218                         if (ar) {
 219                                 i->intervals = ar->find_silence (dB_to_coefficient (threshold ()), minimum_length (), _interthread_info);
 220                         }
 221
 222                         if (_interthread_info.cancel) {
 223                                 break;
 224                         }
 225                 }
 226
 227                 if (!_interthread_info.cancel) {
 228                         Completed (); /* EMIT SIGNAL */
 229                 }
 230
 231                 /* Our work is done; sleep until there is more to do.
 232                  * The lock is released while we are waiting.
 233                  */
 234                 _run_cond.wait (_lock);
 235
 236                 if (_thread_should_finish) {
 237                         _lock.unlock ();
 238                         return 0;
 239                 }
 240         }
 241
 242         return 0;
 243 }
 244
 245 void
 246 StripSilenceDialog::restart_thread ()
 247 {
 248         if (_destroying) {
 249                 /* I don't know how this happens, but it seems to be possible for this
 250                    method to be called after our destructor has finished executing.
 251                    If this happens, bad things follow; _lock cannot be locked and
 252                    Ardour hangs.  So if we are destroying, just bail early.
 253                 */
 254                 return;
 255         }
 256
 257         /* Cancel any current run */
 258         _interthread_info.cancel = true;
 259
 260         /* Block until the thread waits() */
 261         _lock.lock ();
 262         /* Reset the flag */
 263         _interthread_info.cancel = false;
 264         _lock.unlock ();
 265
 266         /* And re-awake the thread */
 267         _run_cond.signal ();
 268 }
 269
 270 void
 271 StripSilenceDialog::threshold_changed ()
 272 {
 273         update_threshold_line ();
 274         restart_thread ();
 275 }
 276
 277 framecnt_t
 278 StripSilenceDialog::minimum_length () const
 279 {
 280         return _minimum_length->current_duration (views.front().view->region()->position());
 281 }
 282
 283 framecnt_t
 284 StripSilenceDialog::fade_length () const
 285 {
 286         return _fade_length->current_duration (views.front().view->region()->position());
 287 }
 288
 289 void
 290 StripSilenceDialog::update_progress_gui (float p)
 291 {
 292         _progress_bar.set_fraction (p);
 293 }