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// license:BSD-3-Clause
// copyright-holders: Devin Acker
/***************************************************************************
Casio GT155 (HG51B155FD)
***************************************************************************/
#ifndef MAME_SOUND_GT155_H
#define MAME_SOUND_GT155_H
#pragma once
#include "dirom.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class gt155_device : public device_t,
public device_sound_interface,
public device_rom_interface<23>
{
public:
static constexpr feature_type imperfect_features() { return feature::SOUND; }
// construction/destruction
gt155_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
void write(offs_t offset, u8 data);
u8 read(offs_t offset);
protected:
// device_t overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual void device_clock_changed() override;
// device_sound_interface overrides
virtual void sound_stream_update(sound_stream &stream) override;
// device_rom_interface overrides
virtual void rom_bank_pre_change() override;
private:
static constexpr unsigned CLOCKS_PER_SAMPLE = 512;
static constexpr unsigned ENV_SHIFT = 8;
struct voice_t
{
u8 m_enable = 0;
u8 m_format = 0;
u32 m_addr = 0;
u32 m_addr_frac = 0;
u32 m_addr_end = 0;
u32 m_addr_loop = 0;
u32 m_addr_loop_frac = 0;
u32 m_pitch = 0;
u32 m_filter_gain = 0;
u16 m_filter = 0;
s32 m_filter_out = 0;
u16 m_filter_unk = 0;
s16 m_sample_last = 0;
s16 m_sample = 0;
u32 m_env_current = 0;
u32 m_env_target = 0;
u16 m_env_level = 0;
u8 m_env_scale = 0;
u16 m_env_rate = 0;
u8 m_balance[2] = {0};
u8 m_dsp_send[2] = {0};
void update_envelope();
};
void mix_sample(voice_t &voice, s64 &left, s64 &right);
void update_sample(voice_t &voice);
u16 reg16(u8 num) const;
u32 reg24(u8 num) const;
u32 reg32(u8 num) const;
void voice_command(u8 data);
sound_stream *m_stream;
u16 m_volume[0x800];
u8 m_data[6];
u32 m_dsp_data[128];
u32 m_rom_addr;
voice_t m_voices[32];
};
DECLARE_DEVICE_TYPE(GT155, gt155_device)
#endif // MAME_SOUND_GT155_H
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