1 /*
2 * OSS compatible sequencer driver
3 *
4 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
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 */
64 struct seq_oss_chinfo {
65 int note, vel;
66 };
67
68 /*
69 * synthesizer information
70 */
71 struct seq_oss_synthinfo {
72 struct snd_seq_oss_arg arg;
73 struct seq_oss_chinfo *ch;
74 struct seq_oss_synth_sysex *sysex;
75 int nr_voices;
76 int opened;
77 int is_midi;
78 int midi_mapped;
79 };
80
81
82 /*
83 * sequencer client information
84 */
85
86 struct seq_oss_devinfo {
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 */
99 int max_mididev;
100
101 /* synth device table */
102 int max_synthdev;
103 struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS];
104 int synth_opened;
105
106 /* output queue */
107 struct seq_oss_writeq *writeq;
108
109 /* midi input queue */
110 struct seq_oss_readq *readq;
111
112 /* timer */
113 struct seq_oss_timer *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);
127 void snd_seq_oss_release(struct seq_oss_devinfo *dp);
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);
134 void snd_seq_oss_drain_write(struct seq_oss_devinfo *dp);
135
136 /* */
137 void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time);
138
139
140 /* proc interface */
141 void snd_seq_oss_system_info_read(struct snd_info_buffer *buf);
142 void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf);
143 void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf);
144 void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf);
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_printk x; } while (0)
185 #else
186 #define debug_printk(x) /**/
187 #endif
188
189 #endif /* __SEQ_OSS_DEVICE_H */
190
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