ControlSet.cpp

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/* This file is part of Evoral.
 * Copyright (C) 2008 David Robillard <http://drobilla.net>
 * Copyright (C) 2000-2008 Paul Davis
 *
 * Evoral 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.
 *
 * Evoral 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <iostream>
#include <limits>
#include "evoral/ControlSet.hpp"
#include "evoral/ControlList.hpp"
#include "evoral/Control.hpp"
#include "evoral/Event.hpp"

using namespace std;

namespace Evoral {


ControlSet::ControlSet()
{
}

ControlSet::ControlSet (const ControlSet&)
        : noncopyable ()
{
        /* derived class must copy controls */
}

void
ControlSet::add_control(boost::shared_ptr<Control> ac)
{
        _controls[ac->parameter()] = ac;

        ac->ListMarkedDirty.connect_same_thread (_control_connections, boost::bind (&ControlSet::control_list_marked_dirty, this));

        if (ac->list()) {
                ac->list()->InterpolationChanged.connect_same_thread (
                        _list_connections,
                        boost::bind (&ControlSet::control_list_interpolation_changed,
                                     this, ac->parameter(), _1));
        }
}

void
ControlSet::what_has_data (set<Parameter>& s) const
{
        Glib::Threads::Mutex::Lock lm (_control_lock);

        for (Controls::const_iterator li = _controls.begin(); li != _controls.end(); ++li) {
                if (li->second->list() && !li->second->list()->empty()) {
                        s.insert (li->first);
                }
        }
}

boost::shared_ptr<Control>
ControlSet::control (const Parameter& parameter, bool create_if_missing)
{
        Controls::iterator i = _controls.find(parameter);

        if (i != _controls.end()) {
                return i->second;

        } else if (create_if_missing) {
                boost::shared_ptr<Control> ac(control_factory(parameter));
                add_control(ac);
                return ac;

        } else {
                return boost::shared_ptr<Control>();
        }
}

bool
ControlSet::find_next_event (double now, double end, ControlEvent& next_event) const
{
        Controls::const_iterator li;

        next_event.when = std::numeric_limits<double>::max();

        for (li = _controls.begin(); li != _controls.end(); ++li) {
                ControlList::const_iterator i;
                boost::shared_ptr<const ControlList> alist (li->second->list());
                ControlEvent cp (now, 0.0f);
                if (!alist) {
                        continue;
                }

                for (i = lower_bound (alist->begin(), alist->end(), &cp, ControlList::time_comparator);
                     i != alist->end() && (*i)->when < end; ++i) {
                        if ((*i)->when > now) {
                                break;
                        }
                }

                if (i != alist->end() && (*i)->when < end) {
                        if ((*i)->when < next_event.when) {
                                next_event.when = (*i)->when;
                        }
                }
        }

        return next_event.when != std::numeric_limits<double>::max();
}

void
ControlSet::clear_controls ()
{
        Glib::Threads::Mutex::Lock lm (_control_lock);

        _control_connections.drop_connections ();
        _list_connections.drop_connections ();

        for (Controls::iterator li = _controls.begin(); li != _controls.end(); ++li) {
                if (li->second->list()) {
                        li->second->list()->clear();
                }
        }
}

} // namespace Evoral