// license:BSD-3-Clause // copyright-holders:Kevin Thacker #pragma once #ifndef __BEEP_H__ #define __BEEP_H__ //************************************************************************** // 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 clock); ~beep_device() { } 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 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 appropiate function */ int m_incr; /* initial wave state */ INT16 m_signal; /* current signal */ }; extern const device_type BEEP; #endif /* __BEEP_H__ */