// license:BSD-3-Clause // copyright-holders:Kevin Thacker #ifndef MAME_SOUND_BEEP_H #define MAME_SOUND_BEEP_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> beep_device class beep_device : public device_t, public device_sound_interface { public: beep_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 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; public: DECLARE_WRITE_LINE_MEMBER(set_state); // enable/disable sound output void set_clock(uint32_t frequency); // output frequency private: sound_stream *m_stream; /* stream number */ int m_enable; /* enable beep */ int m_frequency; /* set frequency - this can be changed using the appropriate function */ int m_incr; /* initial wave state */ int16_t m_signal; /* current signal */ }; DECLARE_DEVICE_TYPE(BEEP, beep_device) #endif // MAME_SOUND_BEEP_H