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livetrax/libs/surfaces/websockets/strips.cc

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2020-02-20 07:12:36 -05:00
/*
* Copyright (C) 2020 Luciano Iam <lucianito@gmail.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 "ardour/plugin_insert.h"
#include "ardour/dB.h"
#include "pbd/controllable.h"
#include "strips.h"
using namespace ARDOUR;
int
ArdourStrips::start ()
{
// take an indexed snapshot of current strips
StripableList strips;
session ().get_stripables (strips, PresentationInfo::AllStripables);
for (StripableList::iterator strip = strips.begin (); strip != strips.end (); ++strip) {
_strips.push_back (*strip);
}
return 0;
}
int
ArdourStrips::stop ()
{
_strips.clear ();
return 0;
}
double
ArdourStrips::to_db (double k)
{
if (k == 0) {
return -std::numeric_limits<double>::infinity ();
}
float db = accurate_coefficient_to_dB (static_cast<float>(k));
return static_cast<double>(db);
}
double
ArdourStrips::from_db (double db)
{
if (db < -192) {
return 0;
}
float k = dB_to_coefficient (static_cast<float>(db));
return static_cast<double>(k);
}
double
ArdourStrips::strip_gain (uint32_t strip_n) const
{
return to_db (nth_strip (strip_n)->gain_control ()->get_value ());
}
void
ArdourStrips::set_strip_gain (uint32_t strip_n, double db)
{
nth_strip (strip_n)->gain_control ()->set_value (from_db (db), PBD::Controllable::NoGroup);
}
double
ArdourStrips::strip_pan (uint32_t strip_n) const
{
// scale from [0.0 ; 1.0] to [-1.0 ; 1.0]
return 2.0 * nth_strip (strip_n)->pan_azimuth_control ()->get_value () - 1.0;
}
void
ArdourStrips::set_strip_pan (uint32_t strip_n, double value)
{
value = (value + 1.0) / 2.0;
nth_strip (strip_n)->pan_azimuth_control ()->set_value (value, PBD::Controllable::NoGroup);
}
bool
ArdourStrips::strip_mute (uint32_t strip_n) const
{
return nth_strip (strip_n)->mute_control ()->muted ();
}
void
ArdourStrips::set_strip_mute (uint32_t strip_n, bool mute)
{
nth_strip (strip_n)->mute_control ()->set_value (mute ? 1.0 : 0.0, PBD::Controllable::NoGroup);
}
bool
ArdourStrips::strip_plugin_enabled (uint32_t strip_n, uint32_t plugin_n) const
{
return strip_plugin_insert (strip_n, plugin_n)->enabled ();
}
void
ArdourStrips::set_strip_plugin_enabled (uint32_t strip_n, uint32_t plugin_n, bool enabled)
{
strip_plugin_insert (strip_n, plugin_n)->enable (enabled);
}
TypedValue
ArdourStrips::strip_plugin_param_value (uint32_t strip_n, uint32_t plugin_n,
uint32_t param_n) const
{
return plugin_param_value (strip_plugin_param_control (strip_n, plugin_n, param_n));
}
void
ArdourStrips::set_strip_plugin_param_value (uint32_t strip_n, uint32_t plugin_n,
uint32_t param_n, TypedValue value)
{
boost::shared_ptr<AutomationControl> control = strip_plugin_param_control (
strip_n, plugin_n, param_n);
if (control) {
ParameterDescriptor pd = control->desc ();
double dbl_val;
if (pd.toggled) {
dbl_val = static_cast<double>(static_cast<bool>(value));
} else if (pd.enumeration || pd.integer_step) {
dbl_val = static_cast<double>(static_cast<int>(value));
} else {
dbl_val = static_cast<double>(value);
}
control->set_value (dbl_val, PBD::Controllable::NoGroup);
}
}
uint32_t
ArdourStrips::strip_count () const
{
return _strips.size ();
}
boost::shared_ptr<Stripable>
ArdourStrips::nth_strip (uint32_t strip_n) const
{
if (strip_n < _strips.size ()) {
return _strips[strip_n];
}
return boost::shared_ptr<Stripable>();
}
TypedValue
ArdourStrips::plugin_param_value (boost::shared_ptr<ARDOUR::AutomationControl> control)
{
TypedValue value = TypedValue ();
if (control) {
ParameterDescriptor pd = control->desc ();
if (pd.toggled) {
value = TypedValue (static_cast<bool>(control->get_value ()));
} else if (pd.enumeration || pd.integer_step) {
value = TypedValue (static_cast<int>(control->get_value ()));
} else {
value = TypedValue (control->get_value ());
}
}
return value;
}
boost::shared_ptr<PluginInsert>
ArdourStrips::strip_plugin_insert (uint32_t strip_n, uint32_t plugin_n) const
{
boost::shared_ptr<Stripable> strip = nth_strip (strip_n);
boost::shared_ptr<Route> route = boost::dynamic_pointer_cast<Route> (strip);
boost::shared_ptr<Processor> processor = route->nth_plugin (plugin_n);
if (processor) {
boost::shared_ptr<PluginInsert> insert =
boost::static_pointer_cast<PluginInsert> (processor);
if (insert) {
return insert;
}
}
return boost::shared_ptr<PluginInsert>();
}
boost::shared_ptr<AutomationControl>
ArdourStrips::strip_plugin_param_control (uint32_t strip_n, uint32_t plugin_n,
uint32_t param_n) const
{
boost::shared_ptr<PluginInsert> insert = strip_plugin_insert (strip_n, plugin_n);
if (insert) {
bool ok = false;
boost::shared_ptr<Plugin> plugin = insert->plugin ();
uint32_t control_id = plugin->nth_parameter (param_n, ok);
if (ok && plugin->parameter_is_input (control_id)) {
boost::shared_ptr<AutomationControl> control =
insert->automation_control (Evoral::Parameter(PluginAutomation, 0, control_id));
return control;
}
}
return boost::shared_ptr<AutomationControl>();
}