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 /* proc interface */
120 void snd_seq_oss_system_info_read(struct snd_info_buffer *buf);
121 void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf);
122 void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf);
123 void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf);
124
125 /* file mode macros */
126 #define is_read_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_READ)
127 #define is_write_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
128 #define is_nonblock_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
129
130 /* dispatch event */
131 static inline int
snd_seq_oss_dispatch(struct seq_oss_devinfo * dp,struct snd_seq_event * ev,int atomic,int hop)132 snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop)
133 {
134 return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
135 }
136
137 /* ioctl for writeq */
138 static inline int
snd_seq_oss_control(struct seq_oss_devinfo * dp,unsigned int type,void * arg)139 snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg)
140 {
141 int err;
142
143 snd_seq_client_ioctl_lock(dp->cseq);
144 err = snd_seq_kernel_client_ctl(dp->cseq, type, arg);
145 snd_seq_client_ioctl_unlock(dp->cseq);
146 return err;
147 }
148
149 /* fill the addresses in header */
150 static inline void
snd_seq_oss_fill_addr(struct seq_oss_devinfo * dp,struct snd_seq_event * ev,int dest_client,int dest_port)151 snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev,
152 int dest_client, int dest_port)
153 {
154 ev->queue = dp->queue;
155 ev->source = dp->addr;
156 ev->dest.client = dest_client;
157 ev->dest.port = dest_port;
158 }
159
160
161 /* misc. functions for proc interface */
162 char *enabled_str(bool b);
163
164 #endif /* __SEQ_OSS_DEVICE_H */
165