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  • only in /asuswrt-rt-n18u-9.0.0.4.380.2695/release/src-rt-6.x.4708/linux/linux-2.6/sound/core/seq/oss/
1/*
2 * OSS compatible sequencer driver
3 *
4 * seq_oss_event.h - OSS event queue record
5 *
6 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
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) */
32struct 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) */
40struct 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) */
48struct 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) */
56struct 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) */
65struct 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) */
75struct 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) */
85struct evrec_sysex {
86	unsigned char code;
87	unsigned char dev;
88	unsigned char buf[6];
89};
90
91/* event record */
92union 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
107int snd_seq_oss_process_event(struct seq_oss_devinfo *dp, union evrec *q, struct snd_seq_event *ev);
108int snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *q);
109int 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 */
113