13
0
livetrax/gtk2_ardour/varispeed_dialog.cc
Robin Gareus 273f81fad7
VarispeedDialog fixes, use 100% for speed 1.0
* Honor max-speed
* Fix percentage off-by one (100%)
* keep cents in range -50 .. +50
2023-10-10 05:12:53 +02:00

177 lines
4.9 KiB
C++

/*
* Copyright (C) 2021 Ben Loftis <ben@harrisonconsoles.com>
*
* 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 <ardour/session.h>
#include "pbd/unwind.h"
#include "varispeed_dialog.h"
#include "ardour_ui.h"
#include "utils.h"
#include "pbd/i18n.h"
using namespace Gtk;
VarispeedDialog::VarispeedDialog ()
: ArdourDialog (_("Varispeed"), false)
, _semitones_adjustment (0.0, -12.0, 12.0, 1.0, 4.0)
, _cents_adjustment (0.0, -100.0, 100.0, 1.0, 10.0)
, _percent_adjustment (100.0, 48.0, 200.0, 1.0, 10.0)
, _semitones_spinner (_semitones_adjustment)
, _cents_spinner (_cents_adjustment)
, _percent_spinner (_percent_adjustment)
, ignore_changes (false)
{
Table* t = manage (new Table (5, 2));
t->set_row_spacings (6);
t->set_col_spacings (6);
int r = 0;
Label* l = manage (new Label (_("Semitones:"), ALIGN_START, ALIGN_CENTER, false));
t->attach (*l, 0, 1, r, r + 1, FILL, EXPAND, 0, 0);
t->attach (_semitones_spinner, 1, 2, r, r + 1, FILL, EXPAND & FILL, 0, 0);
++r;
l = manage (new Label (_("Cents:"), ALIGN_START, ALIGN_CENTER, false));
t->attach (*l, 0, 1, r, r + 1, FILL, EXPAND, 0, 0);
t->attach (_cents_spinner, 1, 2, r, r + 1, FILL, EXPAND & FILL, 0, 0);
++r;
l = manage (new Label (_("Percentage:"), ALIGN_START, ALIGN_CENTER, false));
t->attach (*l, 0, 1, r, r + 1, FILL, EXPAND, 0, 0);
t->attach (_percent_spinner, 1, 2, r, r + 1, FILL, EXPAND & FILL, 0, 0);
++r;
get_vbox ()->set_spacing (6);
get_vbox ()->pack_start (*t, false, false);
_semitones_spinner.set_can_focus (false);
_cents_spinner.set_can_focus (false);
_percent_spinner.set_can_focus (false);
_semitones_spinner.signal_changed ().connect (sigc::mem_fun (*this, &VarispeedDialog::apply_semitones));
_cents_spinner.signal_changed ().connect (sigc::mem_fun (*this, &VarispeedDialog::apply_semitones));
_percent_spinner.signal_changed ().connect (sigc::mem_fun (*this, &VarispeedDialog::apply_percentage));
show_all_children ();
}
bool
VarispeedDialog::on_key_press_event (GdkEventKey* ev)
{
Gtk::Window& main_window (ARDOUR_UI::instance ()->main_window ());
return ARDOUR_UI_UTILS::relay_key_press (ev, &main_window);
}
void
VarispeedDialog::adj_semi (double delta)
{
int cents = _semitones_spinner.get_value () * 100 + _cents_spinner.get_value ();
cents += 100.0 * delta;
_semitones_spinner.set_value (cents / 100);
_cents_spinner.set_value (cents % 100);
}
void
VarispeedDialog::apply_semitones ()
{
if (ignore_changes) {
return;
}
int cents = _semitones_spinner.get_value () * 100 + _cents_spinner.get_value ();
double speed = pow (2.0, ((double)cents / 1200.0));
double const max_speed = ARDOUR::Config->get_max_transport_speed ();
{
PBD::Unwinder<bool> uw (ignore_changes, true);
if (speed >= max_speed) {
speed = max_speed;
double semitones = 12. * (log (speed) / log(2.));
int cents = 100 * fmod (semitones, 1.);
if (cents > 50) {
cents -= 100;
semitones += 1;
}
_semitones_adjustment.set_value (floor (semitones));
_cents_adjustment.set_value (cents);
}
_percent_adjustment.set_value (100. * speed);
}
if (_session && _session->default_play_speed () != speed) {
_session->request_default_play_speed (speed);
}
}
void
VarispeedDialog::apply_percentage ()
{
if (ignore_changes) {
return;
}
double speed = _percent_spinner.get_value() / 100.0;
double max_speed = ARDOUR::Config->get_max_transport_speed ();
{
PBD::Unwinder<bool> uw (ignore_changes, true);
if (speed >= max_speed) {
speed = max_speed;
_percent_adjustment.set_value (100. * speed);
}
double absspeed = ::abs (speed);
double semitones = 12. * (log (absspeed) / log(2.));
int cents = 100 * fmod (semitones, 1.);
if (cents > 50) {
cents -= 100;
semitones += 1;
}
_semitones_adjustment.set_value (floor (semitones));
_cents_adjustment.set_value (cents);
}
if (_session && _session->default_play_speed () != speed) {
_session->request_default_play_speed (speed);
}
}
void
VarispeedDialog::on_show ()
{
apply_semitones ();
ArdourDialog::on_show ();
set_position (Gtk::WIN_POS_NONE); // remember position from now on
}
void
VarispeedDialog::on_hide ()
{
if (_session && _session->default_play_speed () != 1.0) {
_session->request_default_play_speed (1.0);
}
ArdourDialog::on_hide ();
}