Root/include/sound/seq_oss.h

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 <sound/asequencer.h>
25#include <sound/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

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