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// ---------------------------------------------------------------------------
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// This file is part of reSID, a MOS6581 SID emulator engine.
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// Copyright (C) 2004 Dag Lem <resid@nimrod.no>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// ---------------------------------------------------------------------------
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#ifndef __VOICE_H__
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#define __VOICE_H__
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#include "siddefs.h"
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#include "wave.h"
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#include "envelope.h"
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RESID_NAMESPACE_START
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class Voice
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{
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public:
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Voice();
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// void set_chip_model(chip_model model);
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void set_sync_source(Voice*);
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void reset();
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void mute(bool enable);
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void writeCONTROL_REG(reg8);
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// Amplitude modulated waveform output.
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// Range [-2048*255, 2047*255].
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RESID_INLINE sound_sample output();
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protected:
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WaveformGenerator wave;
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EnvelopeGenerator envelope;
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bool muted;
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// Waveform D/A zero level.
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sound_sample wave_zero;
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// Multiplying D/A DC offset.
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sound_sample voice_DC;
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friend class SID;
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};
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// ----------------------------------------------------------------------------
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// Inline functions.
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// The following function is defined inline because it is called every
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// time a sample is calculated.
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// ----------------------------------------------------------------------------
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#if RESID_INLINING || defined(__VOICE_CC__)
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// ----------------------------------------------------------------------------
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// Amplitude modulated waveform output.
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// Ideal range [-2048*255, 2047*255].
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// ----------------------------------------------------------------------------
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RESID_INLINE
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sound_sample Voice::output()
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{
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if (!muted)
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{ // Multiply oscillator output with envelope output.
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return (wave.output() - wave_zero)*envelope.output() + voice_DC;
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} else {
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return 0;
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}
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}
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#endif // RESID_INLINING || defined(__VOICE_CC__)
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RESID_NAMESPACE_STOP
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#endif // not __VOICE_H__
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