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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            event.h
 *
 *  Sat Sep 18 22:02:16 CEST 2010
 *  Copyright 2010 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of DrumGizmo.
 *
 *  DrumGizmo is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  DrumGizmo 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with DrumGizmo; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#pragma once

#include <map>
#include <stdio.h>
#include <string>
#include <mutex>

#include <sndfile.h>

#include "audiofile.h"
#include "audio.h"
#include "audiocache.h"

typedef unsigned int timepos_t;

class Event
{
public:
	virtual ~Event()
	{
	}

	typedef enum
	{
		sample
	} type_t;

	virtual type_t getType() const = 0;

	channel_t channel;
	timepos_t offset;
};

#define NO_RAMPDOWN -1
class EventSample : public Event
{
public:
	EventSample(channel_t c, float g, AudioFile* af,
	            const std::string& grp, void* instr)
	{
		cache_id = CACHE_NOID;
		channel = c;
		gain = g;
		t = 0;
		file = af;
		group = grp;
		instrument = instr;
		rampdown = NO_RAMPDOWN;
		ramp_start = 0;
	}

	Event::type_t getType() const
	{
		return Event::sample;
	}

	cacheid_t cache_id;
	sample_t* buffer;
	size_t buffer_size;

	float gain;
	unsigned int t;
	AudioFile* file;
	std::string group;
	void* instrument;
	int rampdown;
	int ramp_start;
};

class EventQueue
{
public:
	void post(Event* event, timepos_t time);
	Event* take(timepos_t time);
	bool hasEvent(timepos_t time);
	size_t getSize() const
	{
		return queue.size();
	}

private:
	std::multimap<timepos_t, Event*> queue;
	std::mutex mutex;
};