94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
/******************************************************************************/
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/* Mednafen Virtual Boy Emulation Module */
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/******************************************************************************/
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/* vsu.h:
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** Copyright (C) 2010-2016 Mednafen Team
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of the GNU General Public License
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** as published by the Free Software Foundation; either version 2
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** of the License, or (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 Foundation, Inc.,
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** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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class VSU
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{
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public:
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VSU()
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MDFN_COLD;
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~VSU() MDFN_COLD;
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void SetSoundRate(double rate) MDFN_COLD;
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void Power(void) MDFN_COLD;
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void Write(int32 timestamp, uint32 A, uint8 V);
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int32 EndFrame(int32 timestamp, int16 *SoundBuf, int32 SoundBufMaxSize);
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uint8 PeekWave(const unsigned int which, uint32 Address);
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void PokeWave(const unsigned int which, uint32 Address, uint8 value);
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uint8 PeekModWave(uint32 Address);
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void PokeModWave(uint32 Address, uint8 value);
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private:
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void CalcCurrentOutput(int ch, int &left, int &right);
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void Update(int32 timestamp);
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uint8 IntlControl[6];
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uint8 LeftLevel[6];
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uint8 RightLevel[6];
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uint16 Frequency[6];
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uint16 EnvControl[6]; // Channel 5/6 extra functionality tacked on too.
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uint8 RAMAddress[6];
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uint8 SweepControl;
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uint8 WaveData[5][0x20];
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uint8 ModData[0x20];
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int32 EffFreq[6];
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int32 Envelope[6];
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int32 WavePos[6];
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int32 ModWavePos;
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int32 LatcherClockDivider[6];
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int32 FreqCounter[6];
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int32 IntervalCounter[6];
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int32 EnvelopeCounter[6];
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int32 SweepModCounter;
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int32 EffectsClockDivider[6];
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int32 IntervalClockDivider[6];
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int32 EnvelopeClockDivider[6];
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int32 SweepModClockDivider;
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int32 NoiseLatcherClockDivider;
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uint32 NoiseLatcher;
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uint32 lfsr;
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int32 last_output[6][2];
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int32 last_ts;
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Blip_Buffer sbuf[2];
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Blip_Synth<blip_good_quality, 1024> Synth;
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Blip_Synth<blip_med_quality, 1024> NoiseSynth;
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};
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