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
|
// license:GPL-2.0+
// copyright-holders:Peter Trauner
#ifndef MAME_AUDIO_LYNX_H
#define MAME_AUDIO_LYNX_H
#pragma once
class lynx_sound_device : public device_t, public device_sound_interface
{
public:
typedef device_delegate<void (void)> timer_delegate;
lynx_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
void count_down(int nr);
template<typename Object> void set_timer_delegate(Object &&cb) { m_timer_delegate = std::forward<Object>(cb); }
protected:
struct LYNX_AUDIO {
struct {
int8_t volume;
uint8_t feedback;
int8_t output;
uint8_t shifter;
uint8_t bakup;
uint8_t control1;
uint8_t counter;
uint8_t control2;
} reg;
uint8_t attenuation;
uint16_t mask; // 12-bit
uint16_t shifter; // 12-bit
float ticks;
int count;
};
lynx_sound_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
void reset_channel(LYNX_AUDIO *channel);
void shift(int chan_nr);
void execute(int chan_nr);
void init();
void register_save();
sound_stream *m_mixer_channel;
timer_delegate m_timer_delegate; // this calls lynx_timer_count_down from the driver state
float m_usec_per_sample;
std::unique_ptr<int[]> m_shift_mask;
std::unique_ptr<int[]> m_shift_xor;
uint8_t m_attenuation_enable;
uint8_t m_master_enable;
LYNX_AUDIO m_audio[4];
};
class lynx2_sound_device : public lynx_sound_device
{
public:
lynx2_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
};
DECLARE_DEVICE_TYPE(LYNX_SND, lynx_sound_device)
DECLARE_DEVICE_TYPE(LYNX2_SND, lynx2_sound_device)
#define MCFG_LYNX_SND_SET_TIMER( _class, _method) \
downcast<lynx_sound_device &>(*device).set_timer_delegate(lynx_sound_device::timer_delegate(&_class::_method, #_class "::" #_method, nullptr, (_class *)nullptr));
#endif // MAME_AUDIO_LYNX_H
|