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Copyright (C) 2009 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <gtkmm/table.h>
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#include <gtkmm/label.h>
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#include <gtkmm/stock.h>
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#include "ardour/audioregion.h"
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#include "ardour/dB.h"
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#include "ardour_ui.h"
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#include "audio_clock.h"
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#include "gui_thread.h"
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#include "strip_silence_dialog.h"
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#include "canvas_impl.h"
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#include "region_view.h"
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#include "simpleline.h"
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#include "simplerect.h"
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#include "rgb_macros.h"
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using namespace ARDOUR;
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using namespace ArdourCanvas;
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/** Construct Strip silence dialog box */
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StripSilenceDialog::StripSilenceDialog (Session* s, list<RegionView*> const & v)
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: ArdourDialog (_("Strip Silence"))
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, _minimum_length (new AudioClock (X_("silence duration"), true, "", true, false, true, false))
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, _fade_length (new AudioClock (X_("silence duration"), true, "", true, false, true, false))
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, _peaks_ready_connection (0)
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for (list<RegionView*>::const_iterator r = v.begin(); r != v.end(); ++r) {
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views.push_back (ViewInterval (*r));
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Gtk::HBox* hbox = Gtk::manage (new Gtk::HBox);
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Gtk::Table* table = Gtk::manage (new Gtk::Table (3, 3));
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table->set_spacings (6);
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table->attach (*Gtk::manage (new Gtk::Label (_("Threshold"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
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table->attach (_threshold, 1, 2, n, n + 1, Gtk::FILL);
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table->attach (*Gtk::manage (new Gtk::Label (_("dbFS"))), 2, 3, n, n + 1, Gtk::FILL);
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_threshold.set_digits (1);
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_threshold.set_increments (1, 10);
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_threshold.set_range (-120, 0);
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_threshold.set_value (-60);
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_threshold.set_activates_default ();
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table->attach (*Gtk::manage (new Gtk::Label (_("Minimum length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
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table->attach (*_minimum_length, 1, 2, n, n + 1, Gtk::FILL);
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_minimum_length->set_session (s);
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_minimum_length->set_mode (AudioClock::Frames);
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_minimum_length->set (1000, true);
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table->attach (*Gtk::manage (new Gtk::Label (_("Fade length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
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table->attach (*_fade_length, 1, 2, n, n + 1, Gtk::FILL);
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_fade_length->set_session (s);
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_fade_length->set_mode (AudioClock::Frames);
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_fade_length->set (64, true);
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hbox->pack_start (*table);
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get_vbox()->pack_start (*hbox, false, false);
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add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
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add_button (Gtk::Stock::APPLY, Gtk::RESPONSE_OK);
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set_default_response (Gtk::RESPONSE_OK);
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get_vbox()->pack_start (_progress_bar, true, true, 12);
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_threshold.get_adjustment()->signal_value_changed().connect (sigc::mem_fun (*this, &StripSilenceDialog::threshold_changed));
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_minimum_length->ValueChanged.connect (sigc::mem_fun (*this, &StripSilenceDialog::restart_thread));
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update_silence_rects ();
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update_threshold_line ();
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/* Create a thread which runs while the dialogue is open to compute the silence regions */
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Completed.connect (_completed_connection, MISSING_INVALIDATOR, boost::bind (&StripSilenceDialog::update, this), gui_context ());
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_thread_should_finish = false;
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pthread_create (&_thread, 0, StripSilenceDialog::_detection_thread_work, this);
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StripSilenceDialog::~StripSilenceDialog ()
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/* Terminate our thread */
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_interthread_info.cancel = true;
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_thread_should_finish = true;
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pthread_join (_thread, 0);
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delete _minimum_length;
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delete _peaks_ready_connection;
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StripSilenceDialog::silences (AudioIntervalMap& m)
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for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
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pair<boost::shared_ptr<Region>,AudioIntervalResult> newpair (v->view->region(), v->intervals);
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StripSilenceDialog::drop_rects ()
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for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
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v->view->drop_silent_frames ();
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StripSilenceDialog::update_threshold_line ()
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/* Don't need to lock here as we're not reading the _waves silence details */
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for (list<Wave*>::iterator i = _waves.begin(); i != _waves.end(); ++i) {
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(*i)->threshold_line->property_x1() = 0;
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(*i)->threshold_line->property_x2() = _wave_width;
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double const y = alt_log_meter (_threshold.get_value());
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(*i)->threshold_line->property_y1() = (n + 1 - y) * _wave_height;
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(*i)->threshold_line->property_y2() = (n + 1 - y) * _wave_height;
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StripSilenceDialog::update ()
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update_threshold_line ();
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update_silence_rects ();
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StripSilenceDialog::update_silence_rects ()
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/* Lock so that we don't contend with the detection thread for access to the silence regions */
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Glib::Threads::Mutex::Lock lm (_lock);
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double const y = _threshold.get_value();
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for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
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v->view->set_silent_frames (v->intervals, y);
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StripSilenceDialog::_detection_thread_work (void* arg)
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StripSilenceDialog* d = reinterpret_cast<StripSilenceDialog*> (arg);
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return d->detection_thread_work ();
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/** Body of our silence detection thread */
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StripSilenceDialog::detection_thread_work ()
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ARDOUR_UI::instance()->register_thread ("gui", pthread_self(), "silence", 32);
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/* Hold this lock when we are doing work */
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for (list<ViewInterval>::iterator i = views.begin(); i != views.end(); ++i) {
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boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i).view->region());
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i->intervals = ar->find_silence (dB_to_coefficient (threshold ()), minimum_length (), _interthread_info);
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if (_interthread_info.cancel) {
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if (!_interthread_info.cancel) {
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Completed (); /* EMIT SIGNAL */
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/* Our work is done; sleep until there is more to do.
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* The lock is released while we are waiting.
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_run_cond.wait (_lock);
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if (_thread_should_finish) {
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StripSilenceDialog::restart_thread ()
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/* I don't know how this happens, but it seems to be possible for this
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method to be called after our destructor has finished executing.
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If this happens, bad things follow; _lock cannot be locked and
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Ardour hangs. So if we are destroying, just bail early.
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/* Cancel any current run */
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_interthread_info.cancel = true;
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/* Block until the thread waits() */
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_interthread_info.cancel = false;
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/* And re-awake the thread */
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StripSilenceDialog::threshold_changed ()
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update_threshold_line ();
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StripSilenceDialog::minimum_length () const
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return _minimum_length->current_duration (views.front().view->region()->position());
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StripSilenceDialog::fade_length () const
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return _fade_length->current_duration (views.front().view->region()->position());
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StripSilenceDialog::update_progress_gui (float p)
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_progress_bar.set_fraction (p);