1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * OSS compatible sequencer driver
4 *
5 * seq_oss_event.h - OSS event queue record
6 *
7 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
8 */
9
10#ifndef __SEQ_OSS_EVENT_H
11#define __SEQ_OSS_EVENT_H
12
13#include "seq_oss_device.h"
14
15#define SHORT_EVENT_SIZE	4
16#define LONG_EVENT_SIZE		8
17
18/* short event (4bytes) */
19struct evrec_short {
20	unsigned char code;
21	unsigned char parm1;
22	unsigned char dev;
23	unsigned char parm2;
24};
25
26/* short note events (4bytes) */
27struct evrec_note {
28	unsigned char code;
29	unsigned char chn;
30	unsigned char note;
31	unsigned char vel;
32};
33
34/* long timer events (8bytes) */
35struct evrec_timer {
36	unsigned char code;
37	unsigned char cmd;
38	unsigned char dummy1, dummy2;
39	unsigned int time;
40};
41
42/* long extended events (8bytes) */
43struct evrec_extended {
44	unsigned char code;
45	unsigned char cmd;
46	unsigned char dev;
47	unsigned char chn;
48	unsigned char p1, p2, p3, p4;
49};
50
51/* long channel events (8bytes) */
52struct evrec_long {
53	unsigned char code;
54	unsigned char dev;
55	unsigned char cmd;
56	unsigned char chn;
57	unsigned char p1, p2;
58	unsigned short val;
59};
60
61/* channel voice events (8bytes) */
62struct evrec_voice {
63	unsigned char code;
64	unsigned char dev;
65	unsigned char cmd;
66	unsigned char chn;
67	unsigned char note, parm;
68	unsigned short dummy;
69};
70
71/* sysex events (8bytes) */
72struct evrec_sysex {
73	unsigned char code;
74	unsigned char dev;
75	unsigned char buf[6];
76};
77
78/* event record */
79union evrec {
80	struct evrec_short s;
81	struct evrec_note n;
82	struct evrec_long l;
83	struct evrec_voice v;
84	struct evrec_timer t;
85	struct evrec_extended e;
86	struct evrec_sysex x;
87	unsigned int echo;
88	unsigned char c[LONG_EVENT_SIZE];
89};
90
91#define ev_is_long(ev) ((ev)->s.code >= 128)
92#define ev_length(ev) ((ev)->s.code >= 128 ? LONG_EVENT_SIZE : SHORT_EVENT_SIZE)
93
94int snd_seq_oss_process_event(struct seq_oss_devinfo *dp, union evrec *q, struct snd_seq_event *ev);
95int snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *q);
96int snd_seq_oss_event_input(struct snd_seq_event *ev, int direct, void *private_data, int atomic, int hop);
97
98
99#endif /* __SEQ_OSS_EVENT_H */
100