chan_count.cc

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/*
    Copyright (C) 2006 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.

    $Id: insert.cc 712 2006-07-28 01:08:57Z drobilla $
*/

#include <stdint.h>
#include "ardour/chan_count.h"

#include "i18n.h"

static const char* state_node_name = "Channels";

using namespace std;

namespace ARDOUR {

// infinite/zero chan count stuff, for setting minimums and maximums, etc.
// FIXME: implement this in a less fugly way

ChanCount::ChanCount(const XMLNode& node)
{
        reset();
        XMLNodeConstIterator iter = node.children().begin();
        for ( ; iter != node.children().end(); ++iter) {
                if ((*iter)->name() == X_(state_node_name)) {
                        const string& type_str  = (*iter)->property("type")->value();
                        const string& count_str = (*iter)->property("count")->value();
                        set(DataType(type_str), atol(count_str.c_str()));
                }
        }
}

ChanCount
infinity_factory()
{
        ChanCount ret;

        for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
                ret.set(*t, UINT32_MAX);
        }

        return ret;
}

XMLNode*
ChanCount::state(const std::string& name) const
{
        XMLNode* node = new XMLNode (name);
        for (DataType::iterator t = DataType::begin(); t != DataType::end(); ++t) {
                uint32_t count = get(*t);
                if (count > 0) {
                        XMLNode* n = new XMLNode(X_(state_node_name));
                        n->add_property("type", (*t).to_string());
                        n->add_property("count", count);
                        node->add_child_nocopy(*n);
                }
        }
        return node;
}

// Statics
const ChanCount ChanCount::INFINITE = infinity_factory();
const ChanCount ChanCount::ZERO     = ChanCount();

} // namespace ARDOUR

std::ostream& operator<<(std::ostream& o, const ARDOUR::ChanCount& c) {
        return o << "AUDIO=" << c.n_audio() << ":MIDI=" << c.n_midi();
}