You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.5 KiB
87 lines
2.5 KiB
// ---------------------------------------------------------------------------
|
|
// This file is part of reSID, a MOS6581 SID emulator engine.
|
|
// Copyright (C) 2004 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 zero level.
|
|
sound_sample wave_zero;
|
|
|
|
// Multiplying D/A DC offset.
|
|
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_zero)*envelope.output() + voice_DC;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
#endif // RESID_INLINING || defined(__VOICE_CC__)
|
|
|
|
RESID_NAMESPACE_STOP
|
|
|
|
#endif // not __VOICE_H__
|
|
|