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 <sound/driver.h>
25#include <linux/time.h>
26#include <linux/wait.h>
27#include <linux/slab.h>
28#include <linux/sched.h>
29#include <sound/core.h>
30#include <sound/seq_oss.h>
31#include <sound/rawmidi.h>
32#include <sound/seq_kernel.h>
33#include <sound/info.h>
34
35/* enable debug print */
36#define SNDRV_SEQ_OSS_DEBUG
37
38/* max. applications */
39#define SNDRV_SEQ_OSS_MAX_CLIENTS	16
40#define SNDRV_SEQ_OSS_MAX_SYNTH_DEVS	16
41#define SNDRV_SEQ_OSS_MAX_MIDI_DEVS	32
42
43/* version */
44#define SNDRV_SEQ_OSS_MAJOR_VERSION	0
45#define SNDRV_SEQ_OSS_MINOR_VERSION	1
46#define SNDRV_SEQ_OSS_TINY_VERSION	8
47#define SNDRV_SEQ_OSS_VERSION_STR	"0.1.8"
48
49/* device and proc interface name */
50#define SNDRV_SEQ_OSS_DEVNAME		"seq_oss"
51#define SNDRV_SEQ_OSS_PROCNAME		"oss"
52
53
54/*
55 * type definitions
56 */
57
58typedef unsigned int reltime_t;
59typedef unsigned int abstime_t;
60
61
62/*
63 * synthesizer channel information
64 */
65struct seq_oss_chinfo {
66	int note, vel;
67};
68
69/*
70 * synthesizer information
71 */
72struct seq_oss_synthinfo {
73	struct snd_seq_oss_arg arg;
74	struct seq_oss_chinfo *ch;
75	struct seq_oss_synth_sysex *sysex;
76	int nr_voices;
77	int opened;
78	int is_midi;
79	int midi_mapped;
80};
81
82
83/*
84 * sequencer client information
85 */
86
87struct seq_oss_devinfo {
88
89	int index;	/* application index */
90	int cseq;	/* sequencer client number */
91	int port;	/* sequencer port number */
92	int queue;	/* sequencer queue number */
93
94	struct snd_seq_addr addr;	/* address of this device */
95
96	int seq_mode;	/* sequencer mode */
97	int file_mode;	/* file access */
98
99	/* midi device table */
100	int max_mididev;
101
102	/* synth device table */
103	int max_synthdev;
104	struct seq_oss_synthinfo synths[SNDRV_SEQ_OSS_MAX_SYNTH_DEVS];
105	int synth_opened;
106
107	/* output queue */
108	struct seq_oss_writeq *writeq;
109
110	/* midi input queue */
111	struct seq_oss_readq *readq;
112
113	/* timer */
114	struct seq_oss_timer *timer;
115};
116
117
118/*
119 * function prototypes
120 */
121
122/* create/delete OSS sequencer client */
123int snd_seq_oss_create_client(void);
124int snd_seq_oss_delete_client(void);
125
126/* device file interface */
127int snd_seq_oss_open(struct file *file, int level);
128void snd_seq_oss_release(struct seq_oss_devinfo *dp);
129int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg);
130int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count);
131int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt);
132unsigned int snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
133
134void snd_seq_oss_reset(struct seq_oss_devinfo *dp);
135void snd_seq_oss_drain_write(struct seq_oss_devinfo *dp);
136
137/* */
138void snd_seq_oss_process_queue(struct seq_oss_devinfo *dp, abstime_t time);
139
140
141/* proc interface */
142void snd_seq_oss_system_info_read(struct snd_info_buffer *buf);
143void snd_seq_oss_midi_info_read(struct snd_info_buffer *buf);
144void snd_seq_oss_synth_info_read(struct snd_info_buffer *buf);
145void snd_seq_oss_readq_info_read(struct seq_oss_readq *q, struct snd_info_buffer *buf);
146
147/* file mode macros */
148#define is_read_mode(mode)	((mode) & SNDRV_SEQ_OSS_FILE_READ)
149#define is_write_mode(mode)	((mode) & SNDRV_SEQ_OSS_FILE_WRITE)
150#define is_nonblock_mode(mode)	((mode) & SNDRV_SEQ_OSS_FILE_NONBLOCK)
151
152/* dispatch event */
153static inline int
154snd_seq_oss_dispatch(struct seq_oss_devinfo *dp, struct snd_seq_event *ev, int atomic, int hop)
155{
156	return snd_seq_kernel_client_dispatch(dp->cseq, ev, atomic, hop);
157}
158
159/* ioctl */
160static inline int
161snd_seq_oss_control(struct seq_oss_devinfo *dp, unsigned int type, void *arg)
162{
163	return snd_seq_kernel_client_ctl(dp->cseq, type, arg);
164}
165
166/* fill the addresses in header */
167static inline void
168snd_seq_oss_fill_addr(struct seq_oss_devinfo *dp, struct snd_seq_event *ev,
169		     int dest_client, int dest_port)
170{
171	ev->queue = dp->queue;
172	ev->source = dp->addr;
173	ev->dest.client = dest_client;
174	ev->dest.port = dest_port;
175}
176
177
178/* misc. functions for proc interface */
179char *enabled_str(int bool);
180
181
182/* for debug */
183#ifdef SNDRV_SEQ_OSS_DEBUG
184extern int seq_oss_debug;
185#define debug_printk(x)	do { if (seq_oss_debug > 0) snd_printk x; } while (0)
186#else
187#define debug_printk(x)	/**/
188#endif
189
190#endif /* __SEQ_OSS_DEVICE_H */
191