// license:BSD-3-Clause // copyright-holders:Nicola Salmoria #ifndef MAME_SOUND_SNKWAVE_H #define MAME_SOUND_SNKWAVE_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> snkwave_device class snkwave_device : public device_t, public device_sound_interface { public: snkwave_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); DECLARE_WRITE8_MEMBER( snkwave_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; private: static constexpr unsigned WAVEFORM_LENGTH = 16; static constexpr unsigned CLOCK_SHIFT = 8; void update_waveform(unsigned int offset, uint8_t data); sound_stream *m_stream; int m_external_clock; int m_sample_rate; // data about the sound system uint32_t m_frequency; uint32_t m_counter; int m_waveform_position; // decoded waveform table int16_t m_waveform[WAVEFORM_LENGTH]; }; DECLARE_DEVICE_TYPE(SNKWAVE, snkwave_device) #endif // MAME_SOUND_SNKWAVE_H