mirror of
https://github.com/ZDoom/ZMusic.git
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96 lines
3.3 KiB
C++
96 lines
3.3 KiB
C++
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/***************************************************************************
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* libgens: Gens Emulation Library. *
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* Ym2612.hpp: Yamaha YM2612 FM synthesis chip emulator. *
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* *
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* Copyright (c) 1999-2002 by Stéphane Dallongeville *
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* Copyright (c) 2003-2004 by Stéphane Akhoun *
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* Copyright (c) 2008-2015 by David Korth *
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* *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation; either version 2 of the License, or (at your *
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* option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, but *
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* 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 along *
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* 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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#ifndef __LIBGENS_SOUND_YM2612_HPP__
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#define __LIBGENS_SOUND_YM2612_HPP__
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#include <stdint.h>
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namespace LibGens {
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class Ym2612Private;
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class Ym2612
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{
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public:
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Ym2612();
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Ym2612(int clock, int rate);
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~Ym2612();
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protected:
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friend class Ym2612Private;
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Ym2612Private *const d;
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private:
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// Q_DISABLE_COPY() equivalent.
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// TODO: Add LibGens-specific version of Q_DISABLE_COPY().
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Ym2612(const Ym2612 &);
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Ym2612 &operator=(const Ym2612 &);
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public:
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int reInit(int clock, int rate);
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void reset(void);
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uint8_t read(void) const;
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int write(unsigned int address, uint8_t data);
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void write_pan(int channel, int data);
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void update(int32_t *bufL, int32_t *bufR, int length);
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// Properties.
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// TODO: Read-only for now.
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bool enabled(void) const { return m_enabled; }
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bool dacEnabled(void) const { return m_dacEnabled; }
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bool improved(void) const { return m_improved; }
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/** Gens-specific code. **/
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void updateDacAndTimers(int32_t *bufL, int32_t *bufR, int length);
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void specialUpdate(void);
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int getReg(int regID) const;
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// YM write length.
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inline void addWriteLen(int len)
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{ m_writeLen += len; }
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inline void clearWriteLen(void)
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{ m_writeLen = 0; }
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// Reset buffer pointers.
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void resetBufferPtrs(int32_t *bufPtrL, int32_t *bufPtrR);
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protected:
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// PSG write length. (for audio output)
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int m_writeLen;
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bool m_enabled; // YM2612 Enabled
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bool m_dacEnabled; // DAC Enabled
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bool m_improved; // YM2612 Improved
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// YM buffer pointers.
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// TODO: Figure out how to get rid of these!
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int32_t *m_bufPtrL;
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int32_t *m_bufPtrR;
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};
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/* end */
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}
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#endif /* __LIBGENS_SOUND_YM2612_HPP__ */
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