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/*
Copyright (C) 2000 Stefan Westerfeld
[email protected]
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "artsflow.h"
#include "stdsynthmodule.h"
#include <math.h>
#include <stdio.h>
using namespace Arts;
namespace Arts {
class Synth_FREQUENCY_impl :public Synth_FREQUENCY_skel, public StdSynthModule
{
float fpos;
public:
void streamInit() {
fpos = 0;
}
void calculateBlock(unsigned long cycles) {
float fsample = samplingRateFloat;
float finc = *frequency/fsample;
while(cycles)
{
if(cycles >= 8 && ((finc*8+fpos) < 0.9))
{
fpos += finc; *pos++ = fpos;
fpos += finc; *pos++ = fpos;
fpos += finc; *pos++ = fpos;
fpos += finc; *pos++ = fpos;
fpos += finc; *pos++ = fpos;
fpos += finc; *pos++ = fpos;
fpos += finc; *pos++ = fpos;
fpos += finc; *pos++ = fpos;
cycles -= 8;
}
else
{
fpos += finc;
fpos -= floor(fpos);
*pos++ = fpos;
cycles--;
}
}
}
};
REGISTER_IMPLEMENTATION(Synth_FREQUENCY_impl);
}
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