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◆ main openmsx / src / sound / VLM5030.hh
2.2 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
#ifndef VLM5030_HH
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#define VLM5030_HH
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#include "ResampledSoundDevice.hh"
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#include "DeviceConfig.hh"
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#include "EmuTime.hh"
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#include "Rom.hh"
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#include <array>
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#include <cstdint>
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#include <string>
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namespace openmsx {
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class DeviceConfig;
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class VLM5030 final : public ResampledSoundDevice
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{
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public:
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	VLM5030(const std::string& name, static_string_view desc,
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	        std::string_view romFilename, DeviceConfig& config);
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	~VLM5030();
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	void reset();
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	/** latch control data */
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	void writeData(uint8_t data);
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	/** set RST / VCU / ST pins */
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	void writeControl(uint8_t data, EmuTime time);
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	/** get BSY pin level */
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	[[nodiscard]] bool getBSY(EmuTime time) const;
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	template<typename Archive>
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	void serialize(Archive& ar, unsigned version);
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	enum class Phase : uint8_t {
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		RESET,
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		IDLE,
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		SETUP,
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		WAIT,
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		RUN,
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		STOP,
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		END
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	};
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private:
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	void setRST(bool pin);
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	void setVCU(bool pin);
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	void setST (bool pin);
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	// SoundDevice
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	void generateChannels(std::span<float*> bufs, unsigned num) override;
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	[[nodiscard]] float getAmplificationFactorImpl() const override;
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	void setupParameter(uint8_t param);
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	[[nodiscard]] unsigned getBits(unsigned sBit, unsigned bits) const;
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	[[nodiscard]] int parseFrame();
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private:
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	DeviceConfig config2;
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	Rom rom;
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	unsigned address_mask;
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	// state of option parameter
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	uint8_t frame_size;
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	int pitch_offset;
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	// these contain data describing the current and previous voice frames
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	// these are all used to contain the current state of the sound generation
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	unsigned current_energy;
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	unsigned current_pitch;
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	std::array<int, 10> current_k;
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	std::array<int, 10> x;
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	uint16_t address;
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	uint16_t vcu_addr_h;
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	std::array<int16_t, 10> old_k;
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	std::array<int16_t, 10> new_k;
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	std::array<int16_t, 10> target_k;
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	uint16_t old_energy;
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	uint16_t new_energy;
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	uint16_t target_energy;
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	uint8_t old_pitch;
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	uint8_t new_pitch;
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	uint8_t target_pitch;
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	uint8_t interp_step;
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	uint8_t interp_count; // number of interp periods
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	uint8_t sample_count; // sample number within interp
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	uint8_t pitch_count;
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	uint8_t latch_data{0};
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	uint8_t parameter;
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	Phase phase;
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	bool pin_BSY{false};
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	bool pin_ST{false};
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	bool pin_VCU{false};
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	bool pin_RST{false};
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};
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SERIALIZE_CLASS_VERSION(VLM5030, 2);
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} // namespace openmsx
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#endif