1 /*
2 * UAE - The Un*x Amiga Emulator
3 *
4 * Sound emulation stuff
5 *
6 * Copyright 1995, 1996, 1997 Bernd Schmidt
7 */
8
9 #ifndef UAE_AUDIO_H
10 #define UAE_AUDIO_H
11
12 #include "uae/types.h"
13 #ifdef FSUAE
14 #include "uae/inline.h"
15 #endif
16
17 #ifdef FSUAE
18 // FIXME: changed PERIOD_MAX from ULONG_MAX
19 #define PERIOD_MAX UINT_MAX
20 #else
21 #define PERIOD_MAX ULONG_MAX
22 #endif
23 #define MAX_EV ~0u
24
25 void aud0_handler (void);
26 void aud1_handler (void);
27 void aud2_handler (void);
28 void aud3_handler (void);
29
30 void AUDxDAT (int nr, uae_u16 value);
31 void AUDxDAT (int nr, uae_u16 value, uaecptr addr);
32 void AUDxVOL (int nr, uae_u16 value);
33 void AUDxPER (int nr, uae_u16 value);
34 void AUDxLCH (int nr, uae_u16 value);
35 void AUDxLCL (int nr, uae_u16 value);
36 void AUDxLEN (int nr, uae_u16 value);
37
38 uae_u16 audio_dmal (void);
39 void audio_state_machine (void);
40 uaecptr audio_getpt (int nr, bool reset);
41 int init_audio (void);
42 void ahi_install (void);
43 void audio_reset (void);
44 void update_audio (void);
45 void audio_evhandler (void);
46 void audio_hsync (void);
47 void audio_update_adkmasks (void);
48 void update_sound (double clk);
49 void update_cda_sound (double clk);
50 void led_filter_audio (void);
51 void set_audio (void);
52 int audio_activate (void);
53 void audio_deactivate (void);
54 void audio_vsync (void);
55 void audio_sampleripper(int);
56 void write_wavheader (struct zfile *wavfile, uae_u32 size, uae_u32 freq);
57
58 extern int sampleripper_enabled;
59
60 extern void audio_update_sndboard(unsigned int);
61 extern void audio_enable_sndboard(bool);
62 extern void audio_state_sndboard(int);
63 extern void audio_state_sndboard_state(int, int, unsigned int);
64
65 typedef void (*CDA_CALLBACK)(int);
66 extern void audio_cda_new_buffer(uae_s16 *buffer, int length, int userdata, CDA_CALLBACK next_cd_audio_buffer_callback);
67 extern void audio_cda_volume(int left, int right);
68
69 extern int sound_cd_volume[2];
70 extern int sound_paula_volume[2];
71
72 #define AUDIO_CHANNELS_PAULA 4
73 #define AUDIO_CHANNELS_MAX 8
74 #define AUDIO_CHANNEL_SNDBOARD_LEFT 4
75 #define AUDIO_CHANNEL_SNDBOARD_RIGHT 5
76 #define AUDIO_CHANNEL_CDA_LEFT 6
77 #define AUDIO_CHANNEL_CDA_RIGHT 7
78
79 enum {
80 SND_MONO,
81 SND_STEREO,
82 SND_4CH_CLONEDSTEREO,
83 SND_4CH,
84 SND_6CH_CLONEDSTEREO,
85 SND_6CH,
86 SND_NONE
87 };
88
get_audio_stereomode(int channels)89 static inline int get_audio_stereomode (int channels)
90 {
91 switch (channels)
92 {
93 case 1:
94 return SND_MONO;
95 case 2:
96 return SND_STEREO;
97 case 4:
98 return SND_4CH;
99 case 6:
100 return SND_6CH;
101 }
102 return SND_STEREO;
103 }
104
get_audio_nativechannels(int stereomode)105 STATIC_INLINE int get_audio_nativechannels (int stereomode)
106 {
107 int ch[] = { 1, 2, 4, 4, 6, 6, 0 };
108 return ch[stereomode];
109 }
110
get_audio_amigachannels(int stereomode)111 STATIC_INLINE int get_audio_amigachannels (int stereomode)
112 {
113 int ch[] = { 1, 2, 2, 4, 2, 4, 0 };
114 return ch[stereomode];
115 }
116
get_audio_ismono(int stereomode)117 STATIC_INLINE int get_audio_ismono (int stereomode)
118 {
119 return stereomode == 0;
120 }
121
122 #define SOUND_MAX_DELAY_BUFFER 1024
123 #define SOUND_MAX_LOG_DELAY 10
124 #define MIXED_STEREO_MAX 16
125 #define MIXED_STEREO_SCALE 32
126
127 #endif /* UAE_AUDIO_H */
128