gtk2_ardour/strip_silence_dialog.h

   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 <gtkmm/spinbutton.h>
  21 #include <glibmm/thread.h>
  22
  23 #include "ardour/types.h"
  24 #include "ardour_dialog.h"
  25 #include "canvas.h"
  26 #include "progress_reporter.h"
  27
  28 namespace ARDOUR {
  29         class Session;
  30 }
  31
  32 class RegionView;
  33
  34 /// Dialog box to set options for the `strip silence' filter
  35 class StripSilenceDialog : public ArdourDialog, public ProgressReporter
  36 {
  37 public:
  38         StripSilenceDialog (ARDOUR::Session*, std::list<RegionView*> const &);
  39         ~StripSilenceDialog ();
  40
  41         double threshold () const {
  42                 return _threshold.get_value ();
  43         }
  44
  45         void drop_rects ();
  46
  47         void silences (ARDOUR::AudioIntervalMap&);
  48
  49         ARDOUR::framecnt_t minimum_length () const;
  50         ARDOUR::framecnt_t fade_length () const;
  51
  52 private:
  53         void create_waves ();
  54         void peaks_ready ();
  55         void canvas_allocation (Gtk::Allocation &);
  56         void update_silence_rects ();
  57         void resize_silence_rects ();
  58         void update ();
  59         void update_threshold_line ();
  60         void update_stats (ARDOUR::AudioIntervalResult const &);
  61         void threshold_changed ();
  62         void update_progress_gui (float);
  63         void restart_thread ();
  64
  65         Gtk::SpinButton _threshold;
  66         AudioClock      _minimum_length;
  67         AudioClock      _fade_length;
  68         Gtk::ProgressBar _progress_bar;
  69
  70         struct ViewInterval {
  71             RegionView* view;
  72             ARDOUR::AudioIntervalResult intervals;
  73
  74             ViewInterval (RegionView* rv) : view (rv) {}
  75         };
  76
  77         std::list<ViewInterval> views;
  78
  79         PBD::ScopedConnection* _peaks_ready_connection;
  80
  81         bool _destroying;
  82
  83         pthread_t _thread; ///< thread to compute silence in the background
  84         static void * _detection_thread_work (void *);
  85         void * detection_thread_work ();
  86         Glib::Mutex _lock; ///< lock held while the thread is doing work
  87         Glib::Cond _run_cond; ///< condition to wake the thread
  88         bool _thread_should_finish; ///< true if the thread should terminate
  89         PBD::Signal0<void> Completed; ///< emitted when a silence detection has completed
  90         PBD::ScopedConnection _completed_connection;
  91         ARDOUR::InterThreadInfo _interthread_info;
  92 };