ardour/gtk2_ardour/latency_gui.cc

166 lines
4.6 KiB
C++

/*
* Copyright (C) 2007-2017 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2008-2011 David Robillard <d@drobilla.net>
* Copyright (C) 2009-2011 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2013-2019 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <inttypes.h>
#include <iomanip>
#include <gtkmm/stock.h>
#include "pbd/convert.h"
#include "pbd/error.h"
#include "pbd/unwind.h"
#include "ardour/latent.h"
#include "gtkmm2ext/utils.h"
#include "latency_gui.h"
#include "utils.h"
#include "pbd/i18n.h"
using namespace PBD;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace ARDOUR;
static const gchar *_unit_strings[] = {
N_("sample"),
N_("msec"),
N_("period"),
0
};
std::vector<std::string> LatencyGUI::unit_strings;
std::string
LatencyBarController::get_label (double&)
{
return ARDOUR_UI_UTILS::samples_as_time_string (
_latency_gui->adjustment.get_value(), _latency_gui->sample_rate, true);
}
LatencyGUI::LatencyGUI (Latent& l, samplepos_t sr, samplepos_t psz)
: _latent (l)
, sample_rate (sr)
, period_size (psz)
, ignored (new PBD::IgnorableControllable())
, _ignore_change (false)
, adjustment (0, 0.0, sample_rate, 1.0, sample_rate / 1000.0f) /* max 1 second, step by samples, page by msecs */
, bc (adjustment, this)
, reset_button (_("Reset"))
{
Widget* w;
if (unit_strings.empty()) {
unit_strings = I18N (_unit_strings);
}
set_popdown_strings (units_combo, unit_strings);
units_combo.set_active_text (unit_strings.front());
w = manage (new Image (Stock::ADD, ICON_SIZE_BUTTON));
w->show ();
plus_button.add (*w);
w = manage (new Image (Stock::REMOVE, ICON_SIZE_BUTTON));
w->show ();
minus_button.add (*w);
hbox1.pack_start (bc, true, true);
hbox2.set_homogeneous (false);
hbox2.set_spacing (12);
hbox2.pack_start (reset_button);
hbox2.pack_start (minus_button);
hbox2.pack_start (plus_button);
hbox2.pack_start (units_combo, true, true);
minus_button.signal_clicked().connect (sigc::bind (sigc::mem_fun (*this, &LatencyGUI::change_latency_from_button), -1));
plus_button.signal_clicked().connect (sigc::bind (sigc::mem_fun (*this, &LatencyGUI::change_latency_from_button), 1));
reset_button.signal_clicked().connect (sigc::mem_fun (*this, &LatencyGUI::reset));
/* Limit value to adjustment range (max = sample_rate).
* Otherwise if the signal_latency() is larger than the adjustment's max,
* LatencyGUI::finish() would set the adjustment's max value as custom-latency.
*/
adjustment.set_value (std::min (sample_rate, _latent.signal_latency ()));
adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &LatencyGUI::finish));
bc.set_size_request (-1, 25);
bc.set_name (X_("ProcessorControlSlider"));
set_spacing (12);
pack_start (hbox1, true, true);
pack_start (hbox2, true, true);
}
void
LatencyGUI::finish ()
{
if (_ignore_change) {
return;
}
samplepos_t new_value = (samplepos_t) adjustment.get_value();
_latent.set_user_latency (new_value);
}
void
LatencyGUI::reset ()
{
_latent.unset_user_latency ();
PBD::Unwinder<bool> uw (_ignore_change, true);
adjustment.set_value (std::min (sample_rate, _latent.signal_latency ()));
}
void
LatencyGUI::refresh ()
{
PBD::Unwinder<bool> uw (_ignore_change, true);
adjustment.set_value (std::min (sample_rate, _latent.effective_latency ()));
}
void
LatencyGUI::change_latency_from_button (int dir)
{
std::string unitstr = units_combo.get_active_text();
double shift = 0.0;
if (unitstr == unit_strings[0]) {
shift = 1;
} else if (unitstr == unit_strings[1]) {
shift = (sample_rate / 1000.0);
} else if (unitstr == unit_strings[2]) {
shift = period_size;
} else {
fatal << string_compose (_("programming error: %1 (%2)"), X_("illegal string in latency GUI units combo"), unitstr)
<< endmsg;
abort(); /*NOTREACHED*/
}
if (dir > 0) {
adjustment.set_value (adjustment.get_value() + shift);
} else {
adjustment.set_value (adjustment.get_value() - shift);
}
}