1#ifndef __SOUND_SEQ_OSS_H
2#define __SOUND_SEQ_OSS_H
3
4/*
5 * OSS compatible sequencer driver
6 *
7 * Copyright (C) 1998,99 Takashi Iwai
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22 */
23
24#include "asequencer.h"
25#include "seq_kernel.h"
26
27/*
28 * argument structure for synthesizer operations
29 */
30struct snd_seq_oss_arg {
31	/* given by OSS sequencer */
32	int app_index;	/* application unique index */
33	int file_mode;	/* file mode - see below */
34	int seq_mode;	/* sequencer mode - see below */
35
36	/* following must be initialized in open callback */
37	struct snd_seq_addr addr;	/* opened port address */
38	void *private_data;	/* private data for lowlevel drivers */
39
40	/* note-on event passing mode: initially given by OSS seq,
41	 * but configurable by drivers - see below
42	 */
43	int event_passing;
44};
45
46
47/*
48 * synthesizer operation callbacks
49 */
50struct snd_seq_oss_callback {
51	struct module *owner;
52	int (*open)(struct snd_seq_oss_arg *p, void *closure);
53	int (*close)(struct snd_seq_oss_arg *p);
54	int (*ioctl)(struct snd_seq_oss_arg *p, unsigned int cmd, unsigned long arg);
55	int (*load_patch)(struct snd_seq_oss_arg *p, int format, const char __user *buf, int offs, int count);
56	int (*reset)(struct snd_seq_oss_arg *p);
57	int (*raw_event)(struct snd_seq_oss_arg *p, unsigned char *data);
58};
59
60/* flag: file_mode */
61#define SNDRV_SEQ_OSS_FILE_ACMODE		3
62#define SNDRV_SEQ_OSS_FILE_READ		1
63#define SNDRV_SEQ_OSS_FILE_WRITE		2
64#define SNDRV_SEQ_OSS_FILE_NONBLOCK	4
65
66/* flag: seq_mode */
67#define SNDRV_SEQ_OSS_MODE_SYNTH		0
68#define SNDRV_SEQ_OSS_MODE_MUSIC		1
69
70/* flag: event_passing */
71#define SNDRV_SEQ_OSS_PROCESS_EVENTS	0	/* key == 255 is processed as velocity change */
72#define SNDRV_SEQ_OSS_PASS_EVENTS		1	/* pass all events to callback */
73#define SNDRV_SEQ_OSS_PROCESS_KEYPRESS	2	/* key >= 128 will be processed as key-pressure */
74
75/* default control rate: fixed */
76#define SNDRV_SEQ_OSS_CTRLRATE		100
77
78/* default max queue length: configurable by module option */
79#define SNDRV_SEQ_OSS_MAX_QLEN		1024
80
81
82/*
83 * data pointer to snd_seq_register_device
84 */
85struct snd_seq_oss_reg {
86	int type;
87	int subtype;
88	int nvoices;
89	struct snd_seq_oss_callback oper;
90	void *private_data;
91};
92
93/* device id */
94#define SNDRV_SEQ_DEV_ID_OSS		"seq-oss"
95
96#endif /* __SOUND_SEQ_OSS_H */
97