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// license:BSD-3-Clause
// copyright-holders:Kevin Thacker
/**********************************************************************
Simple beeper sound driver
**********************************************************************/
#ifndef MAME_SOUND_BEEP_H
#define MAME_SOUND_BEEP_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
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);
void set_state(int state); // enable/disable sound output
void set_clock(uint32_t frequency); // output frequency
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream) override;
private:
sound_stream *m_stream; // stream number
bool m_enable; // enable beep
uint32_t m_frequency; // set frequency - this can be changed using the appropriate function
int32_t m_incr; // initial wave state
sound_stream::sample_t m_signal; // current signal
};
DECLARE_DEVICE_TYPE(BEEP, beep_device)
#endif // MAME_SOUND_BEEP_H
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