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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 * type definitions
29 */
30typedef struct snd_seq_oss_arg_t snd_seq_oss_arg_t;
31typedef struct snd_seq_oss_callback_t snd_seq_oss_callback_t;
32
33/*
34 * argument structure for synthesizer operations
35 */
36struct snd_seq_oss_arg_t {
37 /* given by OSS sequencer */
38 int app_index; /* application unique index */
39 int file_mode; /* file mode - see below */
40 int seq_mode; /* sequencer mode - see below */
41
42 /* following must be initialized in open callback */
43 snd_seq_addr_t addr; /* opened port address */
44 void *private_data; /* private data for lowlevel drivers */
45
46 /* note-on event passing mode: initially given by OSS seq,
47 * but configurable by drivers - see below
48 */
49 int event_passing;
50};
51
52
53/*
54 * synthesizer operation callbacks
55 */
56struct snd_seq_oss_callback_t {
57 struct module *owner;
58 int (*open)(snd_seq_oss_arg_t *p, void *closure);
59 int (*close)(snd_seq_oss_arg_t *p);
60 int (*ioctl)(snd_seq_oss_arg_t *p, unsigned int cmd, unsigned long arg);
61 int (*load_patch)(snd_seq_oss_arg_t *p, int format, const char __user *buf, int offs, int count);
62 int (*reset)(snd_seq_oss_arg_t *p);
63 int (*raw_event)(snd_seq_oss_arg_t *p, unsigned char *data);
64};
65
66/* flag: file_mode */
67#define SNDRV_SEQ_OSS_FILE_ACMODE 3
68#define SNDRV_SEQ_OSS_FILE_READ 1
69#define SNDRV_SEQ_OSS_FILE_WRITE 2
70#define SNDRV_SEQ_OSS_FILE_NONBLOCK 4
71
72/* flag: seq_mode */
73#define SNDRV_SEQ_OSS_MODE_SYNTH 0
74#define SNDRV_SEQ_OSS_MODE_MUSIC 1
75
76/* flag: event_passing */
77#define SNDRV_SEQ_OSS_PROCESS_EVENTS 0 /* key == 255 is processed as velocity change */
78#define SNDRV_SEQ_OSS_PASS_EVENTS 1 /* pass all events to callback */
79#define SNDRV_SEQ_OSS_PROCESS_KEYPRESS 2 /* key >= 128 will be processed as key-pressure */
80
81/* default control rate: fixed */
82#define SNDRV_SEQ_OSS_CTRLRATE 100
83
84/* default max queue length: configurable by module option */
85#define SNDRV_SEQ_OSS_MAX_QLEN 1024
86
87
88/*
89 * data pointer to snd_seq_register_device
90 */
91typedef struct snd_seq_oss_reg {
92 int type;
93 int subtype;
94 int nvoices;
95 snd_seq_oss_callback_t oper;
96 void *private_data;
97} snd_seq_oss_reg_t;
98
99/* device id */
100#define SNDRV_SEQ_DEV_ID_OSS "seq-oss"
101
102#endif /* __SOUND_SEQ_OSS_H */