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// license:BSD-3-Clause
// copyright-holders:hap
/***************************************************************************
i5000.h - Imagetek I5000 sound emulator
***************************************************************************/
#pragma once
#ifndef __I5000_H__
#define __I5000_H__
#include "sound/okiadpcm.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_I5000_SND_ADD(_tag, _clock) \
MCFG_DEVICE_ADD(_tag, I5000_SND, _clock)
#define MCFG_I5000_SND_REPLACE(_tag, _clock) \
MCFG_DEVICE_REPLACE(_tag, I5000_SND, _clock)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class i5000snd_device : public device_t,
public device_sound_interface
{
public:
// construction/destruction
i5000snd_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
DECLARE_READ16_MEMBER(read);
DECLARE_WRITE16_MEMBER(write);
sound_stream *m_stream;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
private:
struct channel_t
{
bool is_playing;
oki_adpcm_state m_adpcm;
UINT32 address;
int freq_timer;
int freq_base;
int freq_min;
UINT16 sample;
UINT8 shift_pos;
UINT8 shift_amount;
UINT8 shift_mask;
int vol_r;
int vol_l;
int output_r;
int output_l;
};
channel_t m_channels[16];
UINT16 m_regs[0x80];
UINT16 *m_rom_base;
UINT32 m_rom_mask;
int m_lut_volume[0x100];
bool read_sample(int ch);
void write_reg16(UINT8 reg, UINT16 data);
};
// device type definition
extern const device_type I5000_SND;
#endif /* __I5000_H__ */
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