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seq_oss_device.h
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1 /*
2  * OSS compatible sequencer driver
3  *
4  * Copyright (C) 1998,99 Takashi Iwai <[email protected]>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  */
20 
21 #ifndef __SEQ_OSS_DEVICE_H
22 #define __SEQ_OSS_DEVICE_H
23 
24 #include <linux/time.h>
25 #include <linux/wait.h>
26 #include <linux/slab.h>
27 #include <linux/sched.h>
28 #include <sound/core.h>
29 #include <sound/seq_oss.h>
30 #include <sound/rawmidi.h>
31 #include <sound/seq_kernel.h>
32 #include <sound/info.h>
33 
34 /* enable debug print */
35 #define SNDRV_SEQ_OSS_DEBUG
36 
37 /* max. applications */
38 #define SNDRV_SEQ_OSS_MAX_CLIENTS 16
39 #define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS 16
40 #define SNDRV_SEQ_OSS_MAX_MIDI_DEVS 32
41 
42 /* version */
43 #define SNDRV_SEQ_OSS_MAJOR_VERSION 0
44 #define SNDRV_SEQ_OSS_MINOR_VERSION 1
45 #define SNDRV_SEQ_OSS_TINY_VERSION 8
46 #define SNDRV_SEQ_OSS_VERSION_STR "0.1.8"
47 
48 /* device and proc interface name */
49 #define SNDRV_SEQ_OSS_DEVNAME "seq_oss"
50 #define SNDRV_SEQ_OSS_PROCNAME "oss"
51 
52 
53 /*
54  * type definitions
55  */
56 
57 typedef unsigned int reltime_t;
58 typedef unsigned int abstime_t;
59 
60 
61 /*
62  * synthesizer channel information
63  */
65  int note, vel;
66 };
67 
68 /*
69  * synthesizer information
70  */
73  struct seq_oss_chinfo *ch;
75  int nr_voices;
76  int opened;
77  int is_midi;
79 };
80 
81 
82 /*
83  * sequencer client information
84  */
85 
87 
88  int index; /* application index */
89  int cseq; /* sequencer client number */
90  int port; /* sequencer port number */
91  int queue; /* sequencer queue number */
92 
93  struct snd_seq_addr addr; /* address of this device */
94 
95  int seq_mode; /* sequencer mode */
96  int file_mode; /* file access */
97 
98  /* midi device table */
100 
101  /* synth device table */
105 
106  /* output queue */
108 
109  /* midi input queue */
111 
112  /* timer */
114 };
115 
116 
117 /*
118  * function prototypes
119  */
120 
121 /* create/delete OSS sequencer client */
122 int snd_seq_oss_create_client(void);
123 int snd_seq_oss_delete_client(void);
124 
125 /* device file interface */
126 int snd_seq_oss_open(struct file *file, int level);
128 int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg);
129 int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count);
130 int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt);
131 unsigned int snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
132 
133 void snd_seq_oss_reset(struct seq_oss_devinfo *dp);
135 
136 /* */
138 
139 
140 /* proc interface */
145 
146 /* file mode macros */
147 #define is_read_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_READ)
148 #define is_write_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
149 #define is_nonblock_mode(mode) ((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
150 
151 /* dispatch event */
152 static inline int
153 snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop)
154 {
155  return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
156 }
157 
158 /* ioctl */
159 static inline int
160 snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg)
161 {
162  return snd_seq_kernel_client_ctl(dp->cseq, type, arg);
163 }
164 
165 /* fill the addresses in header */
166 static inline void
167 snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev,
168  int dest_client, int dest_port)
169 {
170  ev->queue = dp->queue;
171  ev->source = dp->addr;
172  ev->dest.client = dest_client;
173  ev->dest.port = dest_port;
174 }
175 
176 
177 /* misc. functions for proc interface */
178 char *enabled_str(int bool);
179 
180 
181 /* for debug */
182 #ifdef SNDRV_SEQ_OSS_DEBUG
183 extern int seq_oss_debug;
184 #define debug_printk(x) do { if (seq_oss_debug > 0) snd_printd x; } while (0)
185 #else
186 #define debug_printk(x)
187 #endif
188 
189 #endif /* __SEQ_OSS_DEVICE_H */