// license:BSD-3-Clause // copyright-holders:Ville Linde /* Ricoh RF5C400 emulator */ #ifndef MAME_SOUND_RF5C400_H #define MAME_SOUND_RF5C400_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> rf5c400_device class rf5c400_device : public device_t, public device_sound_interface, public device_rom_interface { public: rf5c400_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); DECLARE_READ16_MEMBER( rf5c400_r ); DECLARE_WRITE16_MEMBER( rf5c400_w ); protected: // device-level overrides virtual void device_start() override; // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; // device_rom_interface overrides virtual void rom_bank_updated() override; private: struct rf5c400_channel { rf5c400_channel() { } uint16_t startH = 0; uint16_t startL = 0; uint16_t freq = 0; uint16_t endL = 0; uint16_t endHloopH = 0; uint16_t loopL = 0; uint16_t pan = 0; uint16_t effect = 0; uint16_t volume = 0; uint16_t attack = 0; uint16_t decay = 0; uint16_t release = 0; uint16_t cutoff = 0; uint64_t pos = 0; uint64_t step = 0; uint16_t keyon = 0; uint8_t env_phase = 0; double env_level = 0.0; double env_step = 0.0; double env_scale = 0.0; }; class envelope_tables { public: envelope_tables(); void init(uint32_t clock); double ar(rf5c400_channel const &chan) const { return m_ar[decode80(chan.attack >> 8)]; } double dr(rf5c400_channel const &chan) const { return m_dr[decode80(chan.decay >> 8)]; } double rr(rf5c400_channel const &chan) const { return m_rr[decode80(chan.release >> 8)]; } private: static constexpr uint8_t decode80(uint8_t val) { return (val & 0x80) ? ((val & 0x7f) + 0x1f) : val; } double m_ar[0x9f]; double m_dr[0x9f]; double m_rr[0x9f]; }; uint8_t decode80(uint8_t val); sound_stream *m_stream; envelope_tables m_env_tables; rf5c400_channel m_channels[32]; uint16_t m_rf5c400_status; uint32_t m_ext_mem_address; uint16_t m_ext_mem_data; }; DECLARE_DEVICE_TYPE(RF5C400, rf5c400_device) #endif // MAME_SOUND_RF5C400_H