player.h

/***************************************************************************
 *   Copyright (C) 2011 by Terraneo Federico                               *
 *                                                                         *
 *   This program 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.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
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 *   file must still be made available in accordance with the GNU General  *
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 ***************************************************************************/

#include "miosix.h"

#ifndef PLAYER_H
#define PLAYER_H

/**
 * Class to play an audio file on the STM32's DAC
 */
class Player
{
public:
	/**
	 * \return an instance of the player (singleton)
	 */
	static Player& instance();

	/**
	 * Play an audio file, returning after the file has coompleted playing
	 * \param sound sound file to play
	 */
	void play(unsigned short* buf, unsigned short size);

	/**
	 * \return true if the resource is busy
	 */
	bool isPlaying() const;
        
        void init();
private:
	Player();
        ~Player();
	Player(const Player&);
	Player& operator= (const Player&);
        bool fillStereoBuffer(unsigned short *buffer, int size);
	mutable miosix::Mutex mutex;
        unsigned short* soundBuffer;
        unsigned int soundSize;
        unsigned int soundIndex;
};

#endif //PLAYER_H