#ifndef Y8950ADPCM_HH

#define Y8950ADPCM_HH

#include "Clock.hh"

#include "Schedulable.hh"

#include "TrackedRam.hh"

#include "serialize_meta.hh"

#include <cstdint>

namespace openmsx {

class DeviceConfig;

class Y8950;

class Y8950Adpcm final : public Schedulable

{

public:

	Y8950Adpcm(Y8950& y8950, const DeviceConfig& config,

	           const std::string& name, unsigned sampleRam);

	void clearRam();

	void reset(EmuTime time);

	[[nodiscard]] bool isMuted() const;

	void writeReg(uint8_t rg, uint8_t data, EmuTime time);

	[[nodiscard]] uint8_t readReg(uint8_t rg, EmuTime time);

	[[nodiscard]] uint8_t peekReg(uint8_t rg, EmuTime time) const;

	[[nodiscard]] int calcSample();

	void sync(EmuTime time);

	void resetStatus();

	template<typename Archive>

	void serialize(Archive& ar, unsigned version);

private:

	// This data is updated while playing

	struct PlayData {

		unsigned memPtr;

		unsigned nowStep;

		int out;

		int output;

		int diff;

		int nextLeveling;

		int sampleStep;

		uint8_t adpcm_data;

	};

	// Schedulable

	void executeUntil(EmuTime time) override;

	void schedule();

	void restart(PlayData& pd) const;

	[[nodiscard]] bool isPlaying() const;

	void writeData(uint8_t data);

	[[nodiscard]] uint8_t peekReg(uint8_t rg) const;

	[[nodiscard]] uint8_t readData();

	[[nodiscard]] uint8_t peekData() const;

	void writeMemory(unsigned memPtr, uint8_t value);

	[[nodiscard]] uint8_t readMemory(unsigned memPtr) const;

	[[nodiscard]] int calcSample(bool doEmu);

private:

	Y8950& y8950;

	TrackedRam ram;

	// copy/pasted from Y8950.hh

	static constexpr int CLOCK_FREQ     = 3579545;

	static constexpr int CLOCK_FREQ_DIV = 72;

	Clock<CLOCK_FREQ, CLOCK_FREQ_DIV> clock;

	PlayData emu; // used for emulator behaviour (read back of sample data)

	PlayData aud; // used by audio generation thread

	unsigned startAddr;

	unsigned stopAddr;

	unsigned addrMask;

	int volume = 0;

	int volumeWStep;

	int readDelay;

	int delta;

	uint8_t reg7;

	uint8_t reg15;

	bool romBank;

};

SERIALIZE_CLASS_VERSION(Y8950Adpcm, 2);

} // namespace openmsx

#endif