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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/*********************************************************
Konami 054539 PCM Sound Chip
*********************************************************/
#ifndef MAME_SOUND_K054539_H
#define MAME_SOUND_K054539_H
#pragma once
#include "dirom.h"
#define K054539_CB_MEMBER(_name) void _name(double left, double right)
class k054539_device : public device_t,
public device_sound_interface,
public device_rom_interface<24>
{
public:
static constexpr feature_type imperfect_features() { return feature::SOUND; } // effector and/or some registers aren't verified/emulated
// control flags, may be set at DRIVER_INIT().
enum {
RESET_FLAGS = 0,
REVERSE_STEREO = 1,
DISABLE_REVERB = 2,
UPDATE_AT_KEYON = 4
};
using apan_delegate = device_delegate<void (double left, double right)>;
// construction/destruction
k054539_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration helpers
auto timer_handler() { return m_timer_handler.bind(); }
template <typename... T> void set_analog_callback(T &&... args) { m_apan_cb.set(std::forward<T>(args)...); }
void write(offs_t offset, u8 data);
u8 read(offs_t offset);
void init_flags(int flags);
/*
Note that the eight PCM channels of a K054539 do not have separate
volume controls. Considering the global attenuation equation may not
be entirely accurate, k054539_set_gain() provides means to control
channel gain. It can be called anywhere but preferably from
DRIVER_INIT().
Parameters:
channel : 0 - 7
gain : 0.0=silent, 1.0=no gain, 2.0=twice as loud, etc.
*/
void set_gain(int channel, double gain);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_clock_changed() override;
virtual void device_reset() override ATTR_COLD;
virtual void device_post_load() 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;
TIMER_CALLBACK_MEMBER(call_timer_handler);
private:
struct channel {
uint32_t pos;
uint32_t pfrac;
int32_t val;
int32_t pval;
};
double voltab[256];
double pantab[0xf];
double gain[8];
uint8_t posreg_latch[8][3];
int flags;
unsigned char regs[0x230];
std::unique_ptr<uint8_t []> ram;
int reverb_pos;
int32_t cur_ptr;
uint32_t rom_addr;
channel channels[8];
sound_stream *stream;
emu_timer *m_timer;
uint32_t m_timer_state;
devcb_write_line m_timer_handler;
apan_delegate m_apan_cb;
bool regupdate();
void keyon(int channel);
void keyoff(int channel);
void init_chip();
};
DECLARE_DEVICE_TYPE(K054539, k054539_device)
#endif // MAME_SOUND_K054539_H
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