// license:GPL-2.0+
// copyright-holders:Jarek Burczynski, Hiromitsu Shioya
// additional modifications for Furnace by tildearrow
#ifndef MAME_SOUND_MSM5232_H
#define MAME_SOUND_MSM5232_H

#pragma once

#include <stdint.h>
#include <functional>

class msm5232_device
{
public:
	msm5232_device(uint32_t clock);

	void set_capacitors(double cap1, double cap2, double cap3, double cap4, double cap5, double cap6, double cap7, double cap8);
  void set_vol_input(double v1, double v2, double v3, double v4, double v5, double v6, double v7, double v8);
	//auto gate() { return m_gate_handler_cb.bind(); }

	void write(unsigned int offset, uint8_t data);
	void set_clock(int clock);
  void mute(int voice, bool mute);

	// device-level overrides
	void device_start();
	void device_stop();
	void device_reset();
	void device_post_load();

	// sound stream update overrides
	void sound_stream_update(short* outputs);

  int get_rate();

  int vo16[8];
  int vo8[8];
  int vo4[8];
  int vo2[8];

private:
	struct VOICE {
		uint8_t mode;
    bool mute;

		int     TG_count_period;
		int     TG_count;

		uint8_t   TG_cnt;     /* 7 bits binary counter (frequency output) */
		uint8_t   TG_out16;   /* bit number (of TG_cnt) for 16' output */
		uint8_t   TG_out8;    /* bit number (of TG_cnt) for  8' output */
		uint8_t   TG_out4;    /* bit number (of TG_cnt) for  4' output */
		uint8_t   TG_out2;    /* bit number (of TG_cnt) for  2' output */

		int     egvol;
		int     eg_sect;
		int     counter;
		int     eg;

		uint8_t   eg_arm;     /* attack/release mode */
    uint8_t   eg_ext;     /* inhibit envelope generator */

		double  ar_rate;
		double  dr_rate;
		double  rr_rate;

		int     pitch;          /* current pitch data */

		int GF;
	};

	VOICE   m_voi[8];

	uint32_t m_EN_out16[2]; /* enable 16' output masks for both groups (0-disabled ; ~0 -enabled) */
	uint32_t m_EN_out8[2];  /* enable 8'  output masks */
	uint32_t m_EN_out4[2];  /* enable 4'  output masks */
	uint32_t m_EN_out2[2];  /* enable 2'  output masks */

	int m_noise_cnt;
	int m_noise_step;
	int m_noise_rng;
	int m_noise_clocks;   /* number of the noise_rng (output) level changes */

	unsigned int m_UpdateStep;

	/* rate tables */
	double  m_ar_tbl[8];
	double  m_dr_tbl[16];

	uint8_t   m_control1;
	uint8_t   m_control2;

	int     m_gate;       /* current state of the GATE output */

	int     m_chip_clock;      /* chip clock in Hz */
	int     m_rate;       /* sample rate in Hz */
  uint32_t m_clock;

	double  m_external_capacity[8]; /* in Farads, eg 0.39e-6 = 0.36 uF (microFarads) */
  double m_external_input[8];
	std::function<void(int)> m_gate_handler_cb;/* callback called when the GATE output pin changes state */

	void init_tables();
	void init_voice(int i);
	void gate_update();
	void init(int clock, int rate);
	void EG_voices_advance();
	void TG_group_advance(int groupidx);
};

#endif // MAME_SOUND_MSM5232_H