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livetrax/gtk2_ardour/strip_silence_dialog.cc
Paul Davis 0d9efc1148 redesign cross-thread registration/signalling system
This new design will work even when threads that need to receive
messages from RT threads are created *after* the RT threads. The
existing design would fail because the RT thread(s) would never
be known the later created threads, and so signals emitted by the
RT thread and causing call_slot() in the receiver would end up
being enqueued using a lock-protected list. The new design ensures
that communication always uses a lock-free FIFO instead
2015-12-28 10:14:17 -05:00

339 lines
9.2 KiB
C++

/*
Copyright (C) 2009 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <iostream>
#include <gtkmm/table.h>
#include <gtkmm/label.h>
#include <gtkmm/stock.h>
#include "ardour/audioregion.h"
#include "ardour/dB.h"
#include "ardour_ui.h"
#include "audio_clock.h"
#include "gui_thread.h"
#include "strip_silence_dialog.h"
#include "region_view.h"
#include "rgb_macros.h"
#include "i18n.h"
#include "logmeter.h"
using namespace ARDOUR;
using namespace std;
using namespace ArdourCanvas;
/** Construct Strip silence dialog box */
StripSilenceDialog::StripSilenceDialog (Session* s, list<RegionView*> const & v)
: ArdourDialog (_("Strip Silence"))
, ProgressReporter ()
, _minimum_length (new AudioClock (X_("silence duration"), true, "", true, false, true, false))
, _fade_length (new AudioClock (X_("silence duration"), true, "", true, false, true, false))
, _destroying (false)
, analysis_progress_cur (0)
, analysis_progress_max (0)
{
set_session (s);
for (list<RegionView*>::const_iterator r = v.begin(); r != v.end(); ++r) {
views.push_back (ViewInterval (*r));
}
Gtk::HBox* hbox = Gtk::manage (new Gtk::HBox);
Gtk::Table* table = Gtk::manage (new Gtk::Table (3, 3));
table->set_spacings (6);
int n = 0;
table->attach (*Gtk::manage (new Gtk::Label (_("Threshold"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
table->attach (_threshold, 1, 2, n, n + 1, Gtk::FILL);
table->attach (*Gtk::manage (new Gtk::Label (_("dbFS"))), 2, 3, n, n + 1, Gtk::FILL);
++n;
_threshold.set_digits (1);
_threshold.set_increments (1, 10);
_threshold.set_range (-120, 0);
_threshold.set_value (-60);
_threshold.set_activates_default ();
table->attach (*Gtk::manage (new Gtk::Label (_("Minimum length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
table->attach (*_minimum_length, 1, 2, n, n + 1, Gtk::FILL);
++n;
_minimum_length->set_session (s);
_minimum_length->set_mode (AudioClock::Frames);
_minimum_length->set (1000, true);
table->attach (*Gtk::manage (new Gtk::Label (_("Fade length"), 1, 0.5)), 0, 1, n, n + 1, Gtk::FILL);
table->attach (*_fade_length, 1, 2, n, n + 1, Gtk::FILL);
++n;
_fade_length->set_session (s);
_fade_length->set_mode (AudioClock::Frames);
_fade_length->set (64, true);
hbox->pack_start (*table);
get_vbox()->pack_start (*hbox, false, false);
cancel_button = add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
apply_button = add_button (Gtk::Stock::APPLY, Gtk::RESPONSE_OK);
set_default_response (Gtk::RESPONSE_OK);
get_vbox()->pack_start (_progress_bar, true, true, 12);
show_all ();
_threshold.get_adjustment()->signal_value_changed().connect (sigc::mem_fun (*this, &StripSilenceDialog::threshold_changed));
_minimum_length->ValueChanged.connect (sigc::mem_fun (*this, &StripSilenceDialog::restart_thread));
_fade_length->ValueChanged.connect (sigc::mem_fun (*this, &StripSilenceDialog::restart_thread));
update_silence_rects ();
update_threshold_line ();
_progress_bar.set_text (_("Analyzing"));
update_progress_gui (0);
apply_button->set_sensitive (false);
progress_idle_connection = Glib::signal_idle().connect (sigc::mem_fun (*this, &StripSilenceDialog::idle_update_progress));
/* Create a thread which runs while the dialogue is open to compute the silence regions */
Completed.connect (_completed_connection, invalidator(*this), boost::bind (&StripSilenceDialog::update, this), gui_context ());
_thread_should_finish = false;
pthread_create (&_thread, 0, StripSilenceDialog::_detection_thread_work, this);
}
StripSilenceDialog::~StripSilenceDialog ()
{
_destroying = true;
progress_idle_connection.disconnect();
/* Terminate our thread */
_interthread_info.cancel = true;
_lock.lock ();
_thread_should_finish = true;
_lock.unlock ();
_run_cond.signal ();
pthread_join (_thread, 0);
delete _minimum_length;
delete _fade_length;
}
bool
StripSilenceDialog::idle_update_progress()
{
if (analysis_progress_max > 0) {
// AudioRegion::find_silence() has
// itt.progress = (end - pos) / length
// not sure if that's intentional, but let's use (1. - val)
float rp = std::min(1.f, std::max (0.f, (1.f - _interthread_info.progress)));
float p = analysis_progress_cur / (float) analysis_progress_max
+ rp / (float) analysis_progress_max;
update_progress_gui (p);
}
return !_destroying;
}
void
StripSilenceDialog::silences (AudioIntervalMap& m)
{
for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
pair<boost::shared_ptr<Region>,AudioIntervalResult> newpair (v->view->region(), v->intervals);
m.insert (newpair);
}
}
void
StripSilenceDialog::drop_rects ()
{
// called by parent when starting to progess (dialog::run returned),
// but before the dialog is destoyed.
_interthread_info.cancel = true;
/* Block until the thread is idle */
_lock.lock ();
_lock.unlock ();
for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
v->view->drop_silent_frames ();
}
cancel_button->set_sensitive (false);
apply_button->set_sensitive (false);
}
void
StripSilenceDialog::update_threshold_line ()
{
#if 0
int n = 0;
/* Don't need to lock here as we're not reading the _waves silence details */
for (list<Wave*>::iterator i = _waves.begin(); i != _waves.end(); ++i) {
(*i)->threshold_line->property_x1() = 0;
(*i)->threshold_line->property_x2() = _wave_width;
double const y = alt_log_meter (_threshold.get_value());
(*i)->threshold_line->property_y1() = (n + 1 - y) * _wave_height;
(*i)->threshold_line->property_y2() = (n + 1 - y) * _wave_height;
}
++n;
#endif
}
void
StripSilenceDialog::update ()
{
update_threshold_line ();
update_silence_rects ();
_progress_bar.set_text ("");
update_progress_gui (0);
apply_button->set_sensitive(true);
}
void
StripSilenceDialog::update_silence_rects ()
{
/* Lock so that we don't contend with the detection thread for access to the silence regions */
Glib::Threads::Mutex::Lock lm (_lock);
double const y = _threshold.get_value();
for (list<ViewInterval>::iterator v = views.begin(); v != views.end(); ++v) {
v->view->set_silent_frames (v->intervals, y);
}
}
void *
StripSilenceDialog::_detection_thread_work (void* arg)
{
StripSilenceDialog* d = reinterpret_cast<StripSilenceDialog*> (arg);
return d->detection_thread_work ();
}
/** Body of our silence detection thread */
void *
StripSilenceDialog::detection_thread_work ()
{
/* Do not register with all UIs, but do register with the GUI,
because we will need to queue some GUI (only) requests
*/
ARDOUR_UI::instance()->register_thread (pthread_self(), "silence", 32);
/* Hold this lock when we are doing work */
_lock.lock ();
while (1) {
analysis_progress_cur = 0;
analysis_progress_max = views.size();
for (list<ViewInterval>::iterator i = views.begin(); i != views.end(); ++i) {
boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> ((*i).view->region());
if (ar) {
i->intervals = ar->find_silence (dB_to_coefficient (threshold ()), minimum_length (), fade_length(), _interthread_info);
}
if (_interthread_info.cancel) {
break;
}
++analysis_progress_cur;
_interthread_info.progress = 1.0;
ARDOUR::GUIIdle ();
}
analysis_progress_max = 0;
if (!_interthread_info.cancel) {
Completed (); /* EMIT SIGNAL */
}
/* Our work is done; sleep until there is more to do.
* The lock is released while we are waiting.
*/
_run_cond.wait (_lock);
if (_thread_should_finish) {
_lock.unlock ();
return 0;
}
}
return 0;
}
void
StripSilenceDialog::restart_thread ()
{
if (_destroying) {
/* I don't know how this happens, but it seems to be possible for this
method to be called after our destructor has finished executing.
If this happens, bad things follow; _lock cannot be locked and
Ardour hangs. So if we are destroying, just bail early.
*/
return;
}
_progress_bar.set_text (_("Analyzing"));
update_progress_gui (0);
apply_button->set_sensitive (false);
/* Cancel any current run */
_interthread_info.cancel = true;
/* Block until the thread waits() */
_lock.lock ();
/* Reset the flag */
_interthread_info.cancel = false;
_lock.unlock ();
/* And re-awake the thread */
_run_cond.signal ();
}
void
StripSilenceDialog::threshold_changed ()
{
update_threshold_line ();
restart_thread ();
}
framecnt_t
StripSilenceDialog::minimum_length () const
{
return std::max((framecnt_t)1, _minimum_length->current_duration (views.front().view->region()->position()));
}
framecnt_t
StripSilenceDialog::fade_length () const
{
return std::max((framecnt_t)0, _fade_length->current_duration (views.front().view->region()->position()));
}
void
StripSilenceDialog::update_progress_gui (float p)
{
_progress_bar.set_fraction (p);
}