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// license:BSD-3-Clause
// copyright-holders:Bryan McPhail
#ifndef MAME_SOUND_K051649_H
#define MAME_SOUND_K051649_H
#pragma once
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_K051649_ADD(_tag, _clock) \
MCFG_DEVICE_ADD(_tag, K051649, _clock)
#define MCFG_K051649_REPLACE(_tag, _clock) \
MCFG_DEVICE_REPLACE(_tag, K051649, _clock)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> k051649_device
class k051649_device : public device_t,
public device_sound_interface
{
public:
k051649_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_WRITE8_MEMBER( k051649_waveform_w );
DECLARE_READ8_MEMBER ( k051649_waveform_r );
DECLARE_WRITE8_MEMBER( k051649_volume_w );
DECLARE_WRITE8_MEMBER( k051649_frequency_w );
DECLARE_WRITE8_MEMBER( k051649_keyonoff_w );
DECLARE_WRITE8_MEMBER( k051649_test_w );
DECLARE_READ8_MEMBER ( k051649_test_r );
DECLARE_WRITE8_MEMBER( k052539_waveform_w );
DECLARE_READ8_MEMBER ( k052539_waveform_r );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_post_load() override;
virtual void device_clock_changed() 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:
// Parameters for a channel
struct sound_channel
{
sound_channel() :
counter(0),
frequency(0),
volume(0),
key(0)
{
std::fill(std::begin(waveram), std::end(waveram), 0);
}
unsigned long counter;
int frequency;
int volume;
int key;
signed char waveram[32];
};
void make_mixer_table(int voices);
sound_channel m_channel_list[5];
/* global sound parameters */
sound_stream *m_stream;
int m_mclock;
int m_rate;
/* mixer tables and internal buffers */
std::unique_ptr<int16_t[]> m_mixer_table;
int16_t *m_mixer_lookup;
std::vector<short> m_mixer_buffer;
/* chip registers */
uint8_t m_test;
};
DECLARE_DEVICE_TYPE(K051649, k051649_device)
#endif // MAME_SOUND_K051649_H
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