/* This file is part of Ingen.
 * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
 * 
 * Ingen 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.
 * 
 * Ingen 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 <cassert>
#include <ladspa.h>
#include <iostream>
#include "LADSPAPlugin.hpp"
#include "LADSPANode.hpp"
#include "NodeImpl.hpp"
#include "Engine.hpp"
#include "AudioDriver.hpp"

using namespace std;

namespace Ingen {


NodeImpl*
LADSPAPlugin::instantiate(const string&     name,
                          bool              polyphonic,
                          Ingen::PatchImpl* parent,
                          Engine&           engine)
{
	assert(_id != 0);
	
	SampleCount srate       = engine.audio_driver()->sample_rate();
	SampleCount buffer_size = engine.audio_driver()->buffer_size();
	
	LADSPA_Descriptor_Function df = NULL;
	LADSPANode* n = NULL;

	load(); // FIXME: unload at some point
	assert(_module);
	assert(*_module);
	
	if (!_module->get_symbol("ladspa_descriptor", (void*&)df)) {
		cerr << "Looks like this isn't a LADSPA plugin." << endl;
		return NULL;
	}

	// Attempt to find the plugin in library
	LADSPA_Descriptor* descriptor = NULL;
	for (unsigned long i=0; (descriptor = (LADSPA_Descriptor*)df(i)) != NULL; ++i) {
		if (descriptor->UniqueID == _id) {
			break;
		}
	}
	
	if (descriptor != NULL) {
		n = new LADSPANode(this, name, polyphonic, parent, descriptor, srate, buffer_size);

		if ( ! n->instantiate() ) {
			delete n;
			n = NULL;
		}

	} else {
		cerr << "Could not find plugin \"" << _id << "\" in " << _library_path << endl;
	}

	return n;
}


} // namespace Ingen