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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
//**************************************************************************
// ======================> 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, const XTAL &clock);
protected:
// device-level overrides
virtual void device_start() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) 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 */
stream_buffer::sample_t m_signal; /* current signal */
};
DECLARE_DEVICE_TYPE(BEEP, beep_device)
#endif // MAME_SOUND_BEEP_H
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