/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            instrument.cc
 *
 *  Tue Jul 22 17:14:20 CEST 2008
 *  Copyright 2008 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.
 */
#include "instrument.h"

#include <hugin.hpp>

#include "sample.h"
#include "position_power.h"

Instrument::Instrument(Settings& settings, Random& rand)
	: settings(settings)
	, rand(rand)
	, sample_selection(settings, rand, powerlist)
{
	DEBUG(instrument, "new %p\n", this);
	lastpos = 0;

	magic = this;
}

Instrument::~Instrument()
{
	magic = nullptr;

	DEBUG(instrument, "delete %p\n", this);
}

bool Instrument::isValid() const
{
	return this == magic;
}

// FIXME: very bad variable naming of parameters
const Sample* Instrument::sample(float power, float instrument_power_range, float position,
                                 float instrument_position_range, std::size_t pos)
{
	if(version >= VersionStr("2.0"))
	{
		// Version 2.0
		return sample_selection.get(power, instrument_power_range,
		                            position, instrument_position_range, pos);
	}
	else
	{
		// Version 1.0
		auto s = samples.get(power);
		if(s.size() == 0)
		{
			return nullptr;
		}

		return rand.choose(s);
	}
}

void Instrument::addSample(level_t a, level_t b, const Sample* s)
{
	samples.insert(a, b, s);
}

void Instrument::finalise()
{
	if(version >= VersionStr("2.0"))
	{
		std::vector<Sample*>::iterator s = samplelist.begin();
		while(s != samplelist.end())
		{
			powerlist.add(*s);
			s++;
		}

		powerlist.finalise();
		sample_selection.finalise();

		position_range.min = std::numeric_limits<double>::max();
		position_range.max = std::numeric_limits<double>::min();
		if(samplelist.empty())
		{
			position_range = {0,1};
		}
		for(const auto& sample : samplelist)
		{
			position_range.min =  std::min(sample->getPosition(), position_range.min);
			position_range.max =  std::max(sample->getPosition(), position_range.max);
		}
	}
}

std::size_t Instrument::getID() const
{
	return id;
}

const std::string& Instrument::getName() const
{
	return _name;
}

const std::string& Instrument::getDescription() const
{
	return _description;
}

const std::string& Instrument::getGroup() const
{
	return _group;
}

void Instrument::setGroup(const std::string& g)
{
	_group = g;
}

std::size_t Instrument::getNumberOfFiles() const
{
	DEBUG(instrument, "audiofiles.size() %d", (int)audiofiles.size());

	// Note: Each AudioFile instance contains just a single channel even for
	// multi-channel files.
	return audiofiles.size();
}

Instrument::PowerRange Instrument::getPowers(float position) const
{
	if(version >= VersionStr("2.0"))
	{
		return positionPower(samplelist, position);
	}
	else
	{
		return { 0.0f, 1.0f };
	}
}

Instrument::PowerRange Instrument::getPositionRange() const
{
	return position_range;
}

const std::vector<Choke>& Instrument::getChokes()
{
	return chokes;
}