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1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
---|---|
2 | #ifndef __SOUND_SEQ_OSS_H |
3 | #define __SOUND_SEQ_OSS_H |
4 | |
5 | /* |
6 | * OSS compatible sequencer driver |
7 | * |
8 | * Copyright (C) 1998,99 Takashi Iwai |
9 | */ |
10 | |
11 | #include <sound/asequencer.h> |
12 | #include <sound/seq_kernel.h> |
13 | |
14 | /* |
15 | * argument structure for synthesizer operations |
16 | */ |
17 | struct snd_seq_oss_arg { |
18 | /* given by OSS sequencer */ |
19 | int app_index; /* application unique index */ |
20 | int file_mode; /* file mode - see below */ |
21 | int seq_mode; /* sequencer mode - see below */ |
22 | |
23 | /* following must be initialized in open callback */ |
24 | struct snd_seq_addr addr; /* opened port address */ |
25 | void *private_data; /* private data for lowlevel drivers */ |
26 | |
27 | /* note-on event passing mode: initially given by OSS seq, |
28 | * but configurable by drivers - see below |
29 | */ |
30 | int event_passing; |
31 | }; |
32 | |
33 | |
34 | /* |
35 | * synthesizer operation callbacks |
36 | */ |
37 | struct snd_seq_oss_callback { |
38 | struct module *owner; |
39 | int (*open)(struct snd_seq_oss_arg *p, void *closure); |
40 | int (*close)(struct snd_seq_oss_arg *p); |
41 | int (*ioctl)(struct snd_seq_oss_arg *p, unsigned int cmd, unsigned long arg); |
42 | int (*load_patch)(struct snd_seq_oss_arg *p, int format, const char __user *buf, int offs, int count); |
43 | int (*reset)(struct snd_seq_oss_arg *p); |
44 | int (*raw_event)(struct snd_seq_oss_arg *p, unsigned char *data); |
45 | }; |
46 | |
47 | /* flag: file_mode */ |
48 | #define SNDRV_SEQ_OSS_FILE_ACMODE 3 |
49 | #define SNDRV_SEQ_OSS_FILE_READ 1 |
50 | #define SNDRV_SEQ_OSS_FILE_WRITE 2 |
51 | #define SNDRV_SEQ_OSS_FILE_NONBLOCK 4 |
52 | |
53 | /* flag: seq_mode */ |
54 | #define SNDRV_SEQ_OSS_MODE_SYNTH 0 |
55 | #define SNDRV_SEQ_OSS_MODE_MUSIC 1 |
56 | |
57 | /* flag: event_passing */ |
58 | #define SNDRV_SEQ_OSS_PROCESS_EVENTS 0 /* key == 255 is processed as velocity change */ |
59 | #define SNDRV_SEQ_OSS_PASS_EVENTS 1 /* pass all events to callback */ |
60 | #define SNDRV_SEQ_OSS_PROCESS_KEYPRESS 2 /* key >= 128 will be processed as key-pressure */ |
61 | |
62 | /* default control rate: fixed */ |
63 | #define SNDRV_SEQ_OSS_CTRLRATE 100 |
64 | |
65 | /* default max queue length: configurable by module option */ |
66 | #define SNDRV_SEQ_OSS_MAX_QLEN 1024 |
67 | |
68 | |
69 | /* |
70 | * data pointer to snd_seq_register_device |
71 | */ |
72 | struct snd_seq_oss_reg { |
73 | int type; |
74 | int subtype; |
75 | int nvoices; |
76 | struct snd_seq_oss_callback oper; |
77 | void *private_data; |
78 | }; |
79 | |
80 | /* device id */ |
81 | #define SNDRV_SEQ_DEV_ID_OSS "seq-oss" |
82 | |
83 | #endif /* __SOUND_SEQ_OSS_H */ |
84 |
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