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seq_oss_event.h
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1 /*
2  * OSS compatible sequencer driver
3  *
4  * seq_oss_event.h - OSS event queue record
5  *
6  * Copyright (C) 1998,99 Takashi Iwai <[email protected]>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  */
22 
23 #ifndef __SEQ_OSS_EVENT_H
24 #define __SEQ_OSS_EVENT_H
25 
26 #include "seq_oss_device.h"
27 
28 #define SHORT_EVENT_SIZE 4
29 #define LONG_EVENT_SIZE 8
30 
31 /* short event (4bytes) */
32 struct evrec_short {
33  unsigned char code;
34  unsigned char parm1;
35  unsigned char dev;
36  unsigned char parm2;
37 };
38 
39 /* short note events (4bytes) */
40 struct evrec_note {
41  unsigned char code;
42  unsigned char chn;
43  unsigned char note;
44  unsigned char vel;
45 };
46 
47 /* long timer events (8bytes) */
48 struct evrec_timer {
49  unsigned char code;
50  unsigned char cmd;
51  unsigned char dummy1, dummy2;
52  unsigned int time;
53 };
54 
55 /* long extended events (8bytes) */
56 struct evrec_extended {
57  unsigned char code;
58  unsigned char cmd;
59  unsigned char dev;
60  unsigned char chn;
61  unsigned char p1, p2, p3, p4;
62 };
63 
64 /* long channel events (8bytes) */
65 struct evrec_long {
66  unsigned char code;
67  unsigned char dev;
68  unsigned char cmd;
69  unsigned char chn;
70  unsigned char p1, p2;
71  unsigned short val;
72 };
73 
74 /* channel voice events (8bytes) */
75 struct evrec_voice {
76  unsigned char code;
77  unsigned char dev;
78  unsigned char cmd;
79  unsigned char chn;
80  unsigned char note, parm;
81  unsigned short dummy;
82 };
83 
84 /* sysex events (8bytes) */
85 struct evrec_sysex {
86  unsigned char code;
87  unsigned char dev;
88  unsigned char buf[6];
89 };
90 
91 /* event record */
92 union evrec {
93  struct evrec_short s;
94  struct evrec_note n;
95  struct evrec_long l;
96  struct evrec_voice v;
97  struct evrec_timer t;
98  struct evrec_extended e;
99  struct evrec_sysex x;
100  unsigned int echo;
101  unsigned char c[LONG_EVENT_SIZE];
102 };
103 
104 #define ev_is_long(ev) ((ev)->s.code >= 128)
105 #define ev_length(ev) ((ev)->s.code >= 128 ? LONG_EVENT_SIZE : SHORT_EVENT_SIZE)
106 
107 int snd_seq_oss_process_event(struct seq_oss_devinfo *dp, union evrec *q, struct snd_seq_event *ev);
108 int snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *q);
109 int snd_seq_oss_event_input(struct snd_seq_event *ev, int direct, void *private_data, int atomic, int hop);
110 
111 
112 #endif /* __SEQ_OSS_EVENT_H */
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