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livetrax/libs/ardour/vca.cc
Robin Gareus 5dc54c91c7 Prevent recursive VCA assignments
The GUI so far only prevents direct connections  VCA 1 > VCA 2 > VCA 1,
but does not recurse  VCA 1 > VCA 2 > VCA 3 > VCA 1
2017-10-20 02:54:28 +02:00

231 lines
5.4 KiB
C++

/*
Copyright (C) 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 "pbd/convert.h"
#include "ardour/automation_control.h"
#include "ardour/debug.h"
#include "ardour/gain_control.h"
#include "ardour/monitor_control.h"
#include "ardour/rc_configuration.h"
#include "ardour/route.h"
#include "ardour/session.h"
#include "ardour/vca.h"
#include "pbd/i18n.h"
using namespace ARDOUR;
using namespace PBD;
using std::string;
Glib::Threads::Mutex VCA::number_lock;
int32_t VCA::next_number = 1;
string VCA::xml_node_name (X_("VCA"));
string
VCA::default_name_template ()
{
return _("VCA %n");
}
int32_t
VCA::next_vca_number ()
{
/* we could use atomic inc here, but elsewhere we need more complete
mutex semantics, so we have to do it here also.
*/
Glib::Threads::Mutex::Lock lm (number_lock);
return next_number++;
}
void
VCA::set_next_vca_number (int32_t n)
{
Glib::Threads::Mutex::Lock lm (number_lock);
next_number = n;
}
int32_t
VCA::get_next_vca_number ()
{
Glib::Threads::Mutex::Lock lm (number_lock);
return next_number;
}
VCA::VCA (Session& s, int32_t num, const string& name)
: Stripable (s, name, PresentationInfo (num, PresentationInfo::VCA))
, Muteable (s, name)
, _number (num)
, _gain_control (new GainControl (s, Evoral::Parameter (GainAutomation), boost::shared_ptr<AutomationList> ()))
{
}
int
VCA::init ()
{
_solo_control.reset (new SoloControl (_session, X_("solo"), *this, *this));
_mute_control.reset (new MuteControl (_session, X_("mute"), *this));
add_control (_gain_control);
add_control (_solo_control);
add_control (_mute_control);
return 0;
}
VCA::~VCA ()
{
DEBUG_TRACE (DEBUG::Destruction, string_compose ("delete VCA %1\n", number()));
{
Glib::Threads::Mutex::Lock lm (_control_lock);
for (Controls::const_iterator li = _controls.begin(); li != _controls.end(); ++li) {
boost::dynamic_pointer_cast<AutomationControl>(li->second)->drop_references ();
}
}
{
Glib::Threads::Mutex::Lock lm (number_lock);
if (_number == next_number - 1) {
/* this was the "last" VCA added, so rewind the next number so
* that future VCAs get numbered as intended
*/
next_number--;
}
}
}
string
VCA::full_name() const
{
/* name() is never empty - default is VCA %n */
return string_compose (_("VCA %1 : %2"), _number, name());
}
XMLNode&
VCA::get_state ()
{
XMLNode* node = new XMLNode (xml_node_name);
node->set_property (X_("name"), name());
node->set_property (X_("number"), _number);
node->add_child_nocopy (_presentation_info.get_state());
node->add_child_nocopy (_gain_control->get_state());
node->add_child_nocopy (_solo_control->get_state());
node->add_child_nocopy (_mute_control->get_state());
node->add_child_nocopy (get_automation_xml_state());
node->add_child_nocopy (Slavable::get_state());
return *node;
}
int
VCA::set_state (XMLNode const& node, int version)
{
Stripable::set_state (node, version);
std::string str;
if (node.get_property ("name", str)) {
set_name (str);
}
node.get_property ("number", _number);
XMLNodeList const &children (node.children());
for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
if ((*i)->name() == Controllable::xml_node_name) {
if (!(*i)->get_property ("name", str)) {
continue;
}
if (str == _gain_control->name()) {
_gain_control->set_state (**i, version);
}
if (str == _solo_control->name()) {
_solo_control->set_state (**i, version);
}
if (str == _mute_control->name()) {
_mute_control->set_state (**i, version);
}
} else if ((*i)->name() == Slavable::xml_node_name) {
Slavable::set_state (**i, version);
} else if ((*i)->name() == Automatable::xml_node_name) {
set_automation_xml_state (**i, Evoral::Parameter(NullAutomation));
}
}
return 0;
}
void
VCA::clear_all_solo_state ()
{
_solo_control->clear_all_solo_state ();
}
MonitorState
VCA::monitoring_state () const
{
/* XXX this has to get more complex but not clear how */
return MonitoringInput;
}
bool
VCA::slaved () const
{
if (!_gain_control) {
return false;
}
/* just test one particular control, not all of them */
return _gain_control->slaved ();
}
bool
VCA::slaved_to (boost::shared_ptr<VCA> vca) const
{
if (!vca || !_gain_control) {
return false;
}
/* just test one particular control, not all of them */
return _gain_control->slaved_to (vca->gain_control());
}
void
VCA::assign (boost::shared_ptr<VCA> v)
{
/* prevent recursive assignments */
if (assigned_to (_session.vca_manager_ptr (), v)) {
warning << _("Master assignment inored to prevent recursion") << endmsg;
return;
}
Slavable::assign (v);
}
SlavableControlList
VCA::slavables () const
{
SlavableControlList rv;
rv.push_back (_gain_control);
rv.push_back (_mute_control);
rv.push_back (_solo_control);
return rv;
}