tonegenerator.h

sip 开源代码 源于novell sip 开源代码 源于novell

/*
 *  Copyright (C) 2004-2006 Savoir-Faire Linux inc.
 *  Author: Yan Morin <[e-mail]>
 *  Author: Laurielle Lea <[e-mail]>
 *                                                                              
 *  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,
 *  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 this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __TONE_GENERATOR_H__
#define __TONE_GENERATOR_H__

#include <string>
#include <cc++/thread.h>

#include "../global.h"

/**
 * Sine generator to create tone with string definition
 */
class ToneGenerator {
public:
	ToneGenerator (unsigned int sampleRate);
	~ToneGenerator (void);
	
	/**
	 * Calculate sinus with superposition of 2 frequencies
	 */
	void generateSin	(int, int, int16 *, int len) const;


	///////////////////////////
	// Public members variable
	//////////////////////////
	int16 *sample;
	int freq1, freq2;
	int time;
	int totalbytes;
	
private:
	/*
	 * Initialisation of the supported tones according to the countries.
	 */
	void		initTone (void);

	int16 _buf[SIZEBUF];
  int _sampleRate;
};

#endif // __TONE_GENRATOR_H__