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/*
Copyright (C) 2005-2009 Michel de Boer <michel@twinklephone.com>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// Frequency generator
//
// This file contains definitions of the frequency generator.
// The frequency generator generates tones build from a list of
// frequencies.
#ifndef _FREQ_GEN_H
#define _FREQ_GEN_H
#include <vector>
#include <commoncpp/config.h>
#include "rtp_telephone_event.h"
using namespace std;
class t_freq_gen {
private:
vector<uint16> _frequencies;
int16 _amplitude;
public:
t_freq_gen(vector<uint16> frequencies, int8 db_level);
t_freq_gen(t_dtmf_ev dtmf, int8 db_level);
// Get sound sample on a particular timestamp in us.
int16 get_sample(uint32 ts_usec) const;
void get_samples(int16 *sample_buf, uint16 buf_len,
uint32 ts_start, double interval) const;
};
#endif
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