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/*
Copyright (C) 2006-2016 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 "ardour/dB.h"
#include "ardour/gain_control.h"
#include "ardour/session.h"
#include "i18n.h"
using namespace ARDOUR;
using namespace std;
GainControl::GainControl (Session& session, const Evoral::Parameter ¶m, boost::shared_ptr<AutomationList> al)
: AutomationControl (session, param, ParameterDescriptor(param),
al ? al : boost::shared_ptr<AutomationList> (new AutomationList (param)),
param.type() == GainAutomation ? X_("gaincontrol") : X_("trimcontrol")) {
alist()->reset_default (1.0);
lower_db = accurate_coefficient_to_dB (_desc.lower);
range_db = accurate_coefficient_to_dB (_desc.upper) - lower_db;
}
void
GainControl::set_value (double val, PBD::Controllable::GroupControlDisposition /* group_override */)
{
if (writable()) {
set_value_unchecked (val);
}
}
void
GainControl::set_value_unchecked (double val)
{
AutomationControl::set_value (std::max (std::min (val, (double)_desc.upper), (double)_desc.lower), Controllable::NoGroup);
_session.set_dirty ();
}
double
GainControl::internal_to_interface (double v) const
{
if (_desc.type == GainAutomation) {
return gain_to_slider_position (v);
} else {
return (accurate_coefficient_to_dB (v) - lower_db) / range_db;
}
}
double
GainControl::interface_to_internal (double v) const
{
if (_desc.type == GainAutomation) {
return slider_position_to_gain (v);
} else {
return dB_to_coefficient (lower_db + v * range_db);
}
}
double
GainControl::internal_to_user (double v) const
{
return accurate_coefficient_to_dB (v);
}
double
GainControl::user_to_internal (double u) const
{
return dB_to_coefficient (u);
}
std::string
GainControl::get_user_string () const
{
char theBuf[32]; sprintf( theBuf, _("%3.1f dB"), accurate_coefficient_to_dB (get_value()));
return std::string(theBuf);
}
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