// license:BSD-3-Clause // copyright-holders:hap /*************************************************************************** i5000.h - Imagetek I5000 sound emulator ***************************************************************************/ #ifndef MAME_SOUND_I5000_H #define MAME_SOUND_I5000_H #pragma once #include "sound/okiadpcm.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class i5000snd_device : public device_t, public device_sound_interface { public: // construction/destruction i5000snd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); DECLARE_READ16_MEMBER(read); DECLARE_WRITE16_MEMBER(write); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; sound_stream *m_stream; private: struct channel_t { bool is_playing; oki_adpcm_state m_adpcm; uint32_t address; int freq_timer; int freq_base; int freq_min; uint16_t sample; uint8_t shift_pos; uint8_t shift_amount; uint8_t shift_mask; int vol_r; int vol_l; int output_r; int output_l; }; channel_t m_channels[16]; uint16_t m_regs[0x80]; uint16_t *m_rom_base; uint32_t m_rom_mask; int m_lut_volume[0x100]; bool read_sample(int ch); void write_reg16(uint8_t reg, uint16_t data); }; // device type definition DECLARE_DEVICE_TYPE(I5000_SND, i5000snd_device) #endif // MAME_SOUND_I5000_H