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// ---------------------------------------------------------------------------
// This file is part of reSID, a MOS6581 SID emulator engine.
// Copyright (C) 2002 Dag Lem <resid@nimrod.no>
//
// 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
// ---------------------------------------------------------------------------
#ifndef __VOICE_H__
#define __VOICE_H__
#include "siddefs.h"
#include "wave.h"
#include "envelope.h"
RESID_NAMESPACE_START
class Voice
{
public:
Voice();
void set_chip_model(chip_model model);
void set_sync_source(Voice*);
void reset();
void mute(bool enable);
void writeCONTROL_REG(reg8);
// Amplitude modulated waveform output.
// Range [-2048*255, 2047*255].
RESID_INLINE sound_sample output();
protected:
WaveformGenerator wave;
EnvelopeGenerator envelope;
bool muted;
// Waveform D/A and envelope multiplying D/A DC offsets.
sound_sample wave_DC;
sound_sample voice_DC;
friend class SID;
};
// ----------------------------------------------------------------------------
// Inline functions.
// The following function is defined inline because it is called every
// time a sample is calculated.
// ----------------------------------------------------------------------------
#if RESID_INLINING || defined(__VOICE_CC__)
// ----------------------------------------------------------------------------
// Amplitude modulated waveform output.
// Ideal range [-2048*255, 2047*255].
// ----------------------------------------------------------------------------
RESID_INLINE
sound_sample Voice::output()
{
if (!muted)
{ // Multiply oscillator output with envelope output.
return (wave.output() + wave_DC)*envelope.output() + voice_DC;
} else {
return 0;
}
}
#endif // RESID_INLINING || defined(__VOICE_CC__)
RESID_NAMESPACE_STOP
#endif // not __VOICE_H__
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