/* 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 <iostream>
#include <pthread.h>
#include "raul/SRSWQueue.hpp"
#include "events/SendPortValueEvent.hpp"
#include "Event.hpp"
#include "PostProcessor.hpp"
#include "Engine.hpp"
#include "AudioDriver.hpp"
#include "ProcessContext.hpp"

using namespace std;

namespace Ingen {


PostProcessor::PostProcessor(Engine& engine, size_t queue_size)
    : _engine(engine)
	, _max_time(0)
	, _events(queue_size)
	, _event_buffer_size(sizeof(SendPortValueEvent)) // FIXME: make generic
	, _event_buffer((uint8_t*)malloc(_event_buffer_size))
{
}


void
PostProcessor::process()
{
	const FrameTime end_time = _max_time.get();

	/* Note the normal (pre-processed client originated) events must
	 * be sent first, since they could have e.g. created a port which
	 * is by now inserted, running, and may broadcast something to
	 * the client.  If the broadcast happened first the client would
	 * not yet know about the port's existance. */
	
	/* FIXME: process events from all threads if parallel */

	/* Process normal events */
	Raul::List<Event*>::Node* n = _events.head();
	while (n) {
		if (n->elem()->time() > end_time)
			break;
		Raul::List<Event*>::Node* next = n->next();
		n->elem()->post_process();
		_events.erase(_events.begin());
		delete n->elem();
		delete n;
		n = next;
	}
	
	/* Process audio thread generated events */
	while (_engine.audio_driver()->context().event_sink().read(
				_event_buffer_size, _event_buffer)) {
		if (((Event*)_event_buffer)->time() > end_time) {
			cerr << "WARNING: Lost event with time "
				<< ((Event*)_event_buffer)->time() << " > " << end_time << endl;
			break;
		}
		((Event*)_event_buffer)->post_process();
	}

}


} // namespace Ingen