/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            player.h
 *
 *  Tue Apr 15 10:34:18 CEST 2014
 *  Copyright 2014 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 General Public License as published by
 *  the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU 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 <QThread>
#include <QTimer>
#include <QMutex>

#include <ao/ao.h>

#include "selection.h"

class Player
	: public QThread
{
	Q_OBJECT
public:
	Player();
	~Player();

	void run();

	// TODO: Make these private.
	// These two need to be public in order for the ugly hack in
	//  CanvasToolListen::playRange to work...
	//  volatile bool playing;
	volatile size_t pos;
	volatile size_t end;

public slots:
	//! Assign PCM data to the player.
	void setPcmData(float *data, size_t num_samples, double samplerate);

	//! Set gain scalar.
	//! This value is multiplied with each sample before it is played.
	void setGainScalar(double gain_scalar);

	//! Set gain is dB.
	//! Convenience method for setGainScalar. It simple recalculates the dB value
	//! to a scalar and sets the gain scalar accordingly.
	void setGainDB(double gain_db);

	//! Set player position as sample offset.
	void setPosition(size_t position);

	//! Play range based on selection including fade-in/out.
	//! \param length Stop playing after length samples. -1 means play all.
	void playSelection(Selection selection, int length = -1);

	//! Return true if last selection is done playing.
	bool playSelectionDone();

	//! Stop playing
	void stop();

signals:
	//! The absolute maximum of samples seen since last update.
	void peakUpdate(double peak);

	//! The absolute maximum of samples seen since last update in dB.
	void peakUpdateDB(double peak_db);

	//! The sample position of the player.
	void positionUpdate(size_t position);

private slots:
	void reportTimeout();

private:
	ao_device *dev;

	float *pcm_data;
	size_t pcm_size;
	double pcm_samplerate{44100.0};

	QTimer report_timer;

	double gain_scalar;
	double peak;

	bool running;

	QMutex mutex;
	volatile bool new_selection;
	size_t sel_end;
	Selection selection;
};