1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * OSS compatible sequencer driver |
4 | * |
5 | * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> |
6 | */ |
7 | |
8 | #ifndef __SEQ_OSS_DEVICE_H |
9 | #define __SEQ_OSS_DEVICE_H |
10 | |
11 | #include <linux/time.h> |
12 | #include <linux/wait.h> |
13 | #include <linux/slab.h> |
14 | #include <linux/sched/signal.h> |
15 | #include <sound/core.h> |
16 | #include <sound/seq_oss.h> |
17 | #include <sound/rawmidi.h> |
18 | #include <sound/seq_kernel.h> |
19 | #include <sound/info.h> |
20 | #include "../seq_clientmgr.h" |
21 | |
22 | /* max. applications */ |
23 | #define SNDRV_SEQ_OSS_MAX_CLIENTS 16 |
24 | #define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS 16 |
25 | #define SNDRV_SEQ_OSS_MAX_MIDI_DEVS 32 |
26 | |
27 | /* version */ |
28 | #define SNDRV_SEQ_OSS_MAJOR_VERSION 0 |
29 | #define SNDRV_SEQ_OSS_MINOR_VERSION 1 |
30 | #define SNDRV_SEQ_OSS_TINY_VERSION 8 |
31 | #define SNDRV_SEQ_OSS_VERSION_STR "0.1.8" |
32 | |
33 | /* device and proc interface name */ |
34 | #define SNDRV_SEQ_OSS_PROCNAME "oss" |
35 | |
36 | |
37 | /* |
38 | * type definitions |
39 | */ |
40 | |
41 | typedef unsigned int reltime_t; |
42 | typedef unsigned int abstime_t; |
43 | |
44 | |
45 | /* |
46 | * synthesizer channel information |
47 | */ |
48 | struct seq_oss_chinfo { |
49 | int note, vel; |
50 | }; |
51 | |
52 | /* |
53 | * synthesizer information |
54 | */ |
55 | struct seq_oss_synthinfo { |
56 | struct snd_seq_oss_arg arg; |
57 | struct seq_oss_chinfo *ch; |
58 | struct seq_oss_synth_sysex *sysex; |
59 | int nr_voices; |
60 | int opened; |
61 | int is_midi; |
62 | int midi_mapped; |
63 | }; |
64 | |
65 | |
66 | /* |
67 | * sequencer client information |
68 | */ |
69 | |
70 | struct seq_oss_devinfo { |
71 | |
72 | int index; /* application index */ |
73 | int cseq; /* sequencer client number */ |
74 | int port; /* sequencer port number */ |
75 | int queue; /* sequencer queue number */ |
76 | |
77 | struct snd_seq_addr addr; /* address of this device */ |
78 | |
79 | int seq_mode; /* sequencer mode */ |
80 | int file_mode; /* file access */ |
81 | |
82 | /* midi device table */ |
83 | int max_mididev; |
84 | |
85 | /* synth device table */ |
86 | int max_synthdev; |
87 | struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS]; |
88 | int synth_opened; |
89 | |
90 | /* output queue */ |
91 | struct seq_oss_writeq *writeq; |
92 | |
93 | /* midi input queue */ |
94 | struct seq_oss_readq *readq; |
95 | |
96 | /* timer */ |
97 | struct seq_oss_timer *timer; |
98 | }; |
99 | |
100 | |
101 | /* |
102 | * function prototypes |
103 | */ |
104 | |
105 | /* create/delete OSS sequencer client */ |
106 | int snd_seq_oss_create_client(void); |
107 | int snd_seq_oss_delete_client(void); |
108 | |
109 | /* device file interface */ |
110 | int snd_seq_oss_open(struct file *file, int level); |
111 | void snd_seq_oss_release(struct seq_oss_devinfo *dp); |
112 | int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg); |
113 | int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count); |
114 | int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt); |
115 | __poll_t snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait); |
116 | |
117 | void snd_seq_oss_reset(struct seq_oss_devinfo *dp); |
118 | |
119 | /* */ |
120 | void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time); |
121 | |
122 | |
123 | /* proc interface */ |
124 | void snd_seq_oss_system_info_read(struct snd_info_buffer *buf); |
125 | void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf); |
126 | void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf); |
127 | void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf); |
128 | |
129 | /* file mode macros */ |
130 | #define is_read_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_READ) |
131 | #define is_write_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_WRITE) |
132 | #define is_nonblock_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK) |
133 | |
134 | /* dispatch event */ |
135 | static inline int |
136 | snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop) |
137 | { |
138 | return snd_seq_kernel_client_dispatch(client: dp->cseq, ev, atomic, hop); |
139 | } |
140 | |
141 | /* ioctl for writeq */ |
142 | static inline int |
143 | snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg) |
144 | { |
145 | int err; |
146 | |
147 | snd_seq_client_ioctl_lock(clientid: dp->cseq); |
148 | err = snd_seq_kernel_client_ctl(client: dp->cseq, cmd: type, arg); |
149 | snd_seq_client_ioctl_unlock(clientid: dp->cseq); |
150 | return err; |
151 | } |
152 | |
153 | /* fill the addresses in header */ |
154 | static inline void |
155 | snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, |
156 | int dest_client, int dest_port) |
157 | { |
158 | ev->queue = dp->queue; |
159 | ev->source = dp->addr; |
160 | ev->dest.client = dest_client; |
161 | ev->dest.port = dest_port; |
162 | } |
163 | |
164 | |
165 | /* misc. functions for proc interface */ |
166 | char *enabled_str(bool b); |
167 | |
168 | #endif /* __SEQ_OSS_DEVICE_H */ |
169 | |