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// license:GPL-2.0+
// copyright-holders:Jarek Burczynski, Hiromitsu Shioya
#ifndef MAME_SOUND_MSM5232_H
#define MAME_SOUND_MSM5232_H

#pragma once


class msm5232_device : public device_t, public device_sound_interface
{
public:
	msm5232_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	void set_capacitors(double cap1, double cap2, double cap3, double cap4, double cap5, double cap6, double cap7, double cap8);
	auto gate() { return m_gate_handler_cb.bind(); }

	void write(offs_t offset, uint8_t data);
	void set_clock(int clock);

protected:
	// device-level overrides
	virtual void device_start() override ATTR_COLD;
	virtual void device_stop() override ATTR_COLD;
	virtual void device_reset() override ATTR_COLD;
	virtual void device_post_load() override;

	// sound stream update overrides
	virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;

private:
	struct VOICE {
		uint8_t mode;

		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

		double  ar_rate;
		double  dr_rate;
		double  rr_rate;

		int     pitch;      // current pitch data

		int GF;
	};

	// internal state
	sound_stream *m_stream;

	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

	double  m_external_capacitance[8]; // in Farads, eg 0.39e-6 = 0.36 uF (microFarads)
	devcb_write_line 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);
};

DECLARE_DEVICE_TYPE(MSM5232, msm5232_device)

#endif // MAME_SOUND_MSM5232_H