mirror of
https://github.com/ZDoom/gzdoom-gles.git
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87d46ddd11
## 1.5.0 2020-09-28 * Drum note length expanding is now supported in real-time mode (Thanks to [Jean Pierre Cimalando](https://github.com/jpcima) for a work!) * Added support for OPNA chip with Neko Project II Kai YM2602 emulator usage (Thanks to [Jean Pierre Cimalando](https://github.com/jpcima) for a work!) * Added VGM file dumper which allows to output OPN2 commands into VGM file. (A new MIDI to VGM tool is now created with basing on libOPNMIDI) * Fixed an incorrect work of CC-121 (See https://github.com/Wohlstand/libADLMIDI/issues/227 for details) * Internality has been refactored and improved
193 lines
6.1 KiB
C++
193 lines
6.1 KiB
C++
// license:GPL-2.0+
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// copyright-holders:Jarek Burczynski,Tatsuyuki Satoh
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/*
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File: fm.h -- header file for software emulation for FM sound generator
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*/
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#ifndef MAME_SOUND_FM_H
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#define MAME_SOUND_FM_H
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#pragma once
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#include "emu.h"
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struct device_t;
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typedef int32_t stream_sample_t;
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/* --- select emulation chips --- */
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#define BUILD_YM2203 (0) /* build YM2203(OPN) emulator */
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#define BUILD_YM2608 (1) /* build YM2608(OPNA) emulator */
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#define BUILD_YM2610 (0) /* build YM2610(OPNB) emulator */
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#define BUILD_YM2610B (0) /* build YM2610B(OPNB?)emulator */
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#define BUILD_YM2612 (0) /* build YM2612(OPN2) emulator */
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#define BUILD_YM3438 (0) /* build YM3438(OPN) emulator */
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/* select bit size of output : 8 or 16 */
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#define FM_SAMPLE_BITS 16
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/* select timer system internal or external */
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#define FM_INTERNAL_TIMER 0
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/* --- speedup optimize --- */
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/* busy flag emulation , The definition of FM_GET_TIME_NOW() is necessary. */
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#define FM_BUSY_FLAG_SUPPORT 0
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/* --- external SSG(YM2149/AY-3-8910)emulator interface port */
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/* used by YM2203,YM2608,and YM2610 */
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struct ssg_callbacks
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{
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void (*set_clock)(device_t *device, int clock);
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void (*write)(device_t *device, int address, int data);
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int (*read)(device_t *device);
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void (*reset)(device_t *device);
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};
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/* --- external callback functions for realtime update --- */
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#if FM_BUSY_FLAG_SUPPORT
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using TIME_TYPE = attotime;
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#define UNDEFINED_TIME attotime::zero
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#define FM_GET_TIME_NOW(machine) (machine)->time()
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inline TIME_TYPE ADD_TIMES(TIME_TYPE const &t1, TIME_TYPE const &t2) { return t1 + t2; }
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constexpr int COMPARE_TIMES(TIME_TYPE const &t1, TIME_TYPE const &t2) { return (t1 == t2) ? 0 : (t1 < t2) ? -1 : 1; }
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template <typename X> constexpr TIME_TYPE MULTIPLY_TIME_BY_INT(TIME_TYPE const &t, X &&i) { return t * i; }
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#endif
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typedef stream_sample_t FMSAMPLE;
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/*
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#if (FM_SAMPLE_BITS==16)
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typedef int16_t FMSAMPLE;
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#endif
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#if (FM_SAMPLE_BITS==8)
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typedef unsigned char FMSAMPLE;
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#endif
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*/
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typedef uint8_t (*FM_READBYTE)(device_t *device, offs_t offset);
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typedef void(*FM_WRITEBYTE)(device_t *device, offs_t offset, uint8_t data);
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typedef void (*FM_TIMERHANDLER)(device_t *device,int c,int cnt,int clock);
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typedef void (*FM_IRQHANDLER)(device_t *device,int irq);
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/* FM_TIMERHANDLER : Stop or Start timer */
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/* int n = chip number */
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/* int c = Channel 0=TimerA,1=TimerB */
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/* int count = timer count (0=stop) */
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/* doube stepTime = step time of one count (sec.)*/
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/* FM_IRQHHANDLER : IRQ level changing sense */
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/* int n = chip number */
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/* int irq = IRQ level 0=OFF,1=ON */
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#if BUILD_YM2203
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/* -------------------- YM2203(OPN) Interface -------------------- */
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/*
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** Initialize YM2203 emulator(s).
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**
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** 'num' is the number of virtual YM2203's to allocate
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** 'baseclock'
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** 'rate' is sampling rate
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** 'TimerHandler' timer callback handler when timer start and clear
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** 'IRQHandler' IRQ callback handler when changed IRQ level
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** return 0 = success
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*/
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void * ym2203_init(device_t *device, int baseclock, int rate,
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FM_TIMERHANDLER TimerHandler,FM_IRQHANDLER IRQHandler, const ssg_callbacks *ssg);
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/*
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** YM2203 clock changed notifier
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*/
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void ym2203_clock_changed(void *chip, int clock, int rate);
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/*
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** shutdown the YM2203 emulators
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*/
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void ym2203_shutdown(void *chip);
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/*
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** reset all chip registers for YM2203 number 'num'
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*/
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void ym2203_reset_chip(void *chip);
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/*
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** update one of chip
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*/
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void ym2203_update_one(void *chip, FMSAMPLE *buffer, int length);
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/*
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** Write
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** return : InterruptLevel
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*/
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int ym2203_write(void *chip,int a,unsigned char v);
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/*
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** Read
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** return : InterruptLevel
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*/
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unsigned char ym2203_read(void *chip,int a);
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/*
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** Timer OverFlow
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*/
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int ym2203_timer_over(void *chip, int c);
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/*
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** State Save
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*/
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void ym2203_postload(void *chip);
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#endif /* BUILD_YM2203 */
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#if BUILD_YM2608
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/* -------------------- YM2608(OPNA) Interface -------------------- */
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void * ym2608_init(device_t *device, int baseclock, int rate,
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FM_READBYTE InternalReadByte,
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FM_READBYTE ExternalReadByte, FM_WRITEBYTE ExternalWriteByte,
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FM_TIMERHANDLER TimerHandler, FM_IRQHANDLER IRQHandler, const ssg_callbacks *ssg);
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void ym2608_clock_changed(void *chip, int clock, int rate);
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void ym2608_shutdown(void *chip);
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void ym2608_reset_chip(void *chip);
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void ym2608_update_one(void *chip, FMSAMPLE **buffer, int length);
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int ym2608_write(void *chip, int a,unsigned char v);
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void ym2608_write_pan(void *chip, int c,unsigned char v); // libOPNMIDI: soft panning
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unsigned char ym2608_read(void *chip,int a);
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int ym2608_timer_over(void *chip, int c );
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void ym2608_postload(void *chip);
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#endif /* BUILD_YM2608 */
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#if (BUILD_YM2610||BUILD_YM2610B)
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/* -------------------- YM2610(OPNB) Interface -------------------- */
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void * ym2610_init(device_t *device, int baseclock, int rate,
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FM_READBYTE adpcm_a_read_byte, FM_READBYTE adpcm_b_read_byte,
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FM_TIMERHANDLER TimerHandler,FM_IRQHANDLER IRQHandler, const ssg_callbacks *ssg);
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void ym2610_clock_changed(void *chip, int clock, int rate);
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void ym2610_shutdown(void *chip);
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void ym2610_reset_chip(void *chip);
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void ym2610_update_one(void *chip, FMSAMPLE **buffer, int length);
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#if BUILD_YM2610B
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void ym2610b_update_one(void *chip, FMSAMPLE **buffer, int length);
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#endif /* BUILD_YM2610B */
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int ym2610_write(void *chip, int a,unsigned char v);
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unsigned char ym2610_read(void *chip,int a);
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int ym2610_timer_over(void *chip, int c );
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void ym2610_postload(void *chip);
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#endif /* (BUILD_YM2610||BUILD_YM2610B) */
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#if (BUILD_YM2612||BUILD_YM3438)
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void * ym2612_init(device_t *device, int baseclock, int rate,
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FM_TIMERHANDLER TimerHandler,FM_IRQHANDLER IRQHandler);
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void ym2612_clock_changed(void *chip, int clock, int rate);
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void ym2612_shutdown(void *chip);
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void ym2612_reset_chip(void *chip);
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void ym2612_update_one(void *chip, FMSAMPLE **buffer, int length);
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int ym2612_write(void *chip, int a,unsigned char v);
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unsigned char ym2612_read(void *chip,int a);
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int ym2612_timer_over(void *chip, int c );
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void ym2612_postload(void *chip);
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#endif /* (BUILD_YM2612||BUILD_YM3438) */
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#endif // MAME_SOUND_FM_H
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