1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/*********************************************************
Konami 054539 PCM Sound Chip
*********************************************************/
#ifndef MAME_SOUND_K054539_H
#define MAME_SOUND_K054539_H
#pragma once
#define K054539_CB_MEMBER(_name) void _name(double left, double right)
#define MCFG_K054539_APAN_CB(_class, _method) \
k054539_device::set_analog_callback(*device, k054539_device::cb_delegate(&_class::_method, #_class "::" #_method, this));
#define MCFG_K054539_REGION_OVERRRIDE(_region) \
k054539_device::set_override(*device, "^" _region);
#define MCFG_K054539_TIMER_HANDLER(_devcb) \
devcb = &k054539_device::set_timer_handler(*device, DEVCB_##_devcb);
class k054539_device : public device_t,
public device_sound_interface,
public device_rom_interface
{
public:
// control flags, may be set at DRIVER_INIT().
enum {
RESET_FLAGS = 0,
REVERSE_STEREO = 1,
DISABLE_REVERB = 2,
UPDATE_AT_KEYON = 4
};
typedef device_delegate<void (double left, double right)> cb_delegate;
// construction/destruction
k054539_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// static configuration helpers
static void set_analog_callback(device_t &device, cb_delegate &&cb) { downcast<k054539_device &>(device).m_apan_cb = std::move(cb); }
template <class Object> static devcb_base &set_timer_handler(device_t &device, Object &&cb) { return downcast<k054539_device &>(device).m_timer_handler.set_callback(std::forward<Object>(cb)); }
DECLARE_WRITE8_MEMBER(write);
DECLARE_READ8_MEMBER(read);
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;
virtual void device_reset() override;
virtual void device_post_load() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// device_sound_interface overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
// device_rom_interface overrides
virtual void rom_bank_updated() override;
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;
int cur_limit;
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;
cb_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
|