Root/include/sound/asequencer.h

1/*
2 * Main header file for the ALSA sequencer
3 * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
4 * (c) 1998-1999 by Jaroslav Kysela <perex@perex.cz>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22#ifndef __SOUND_ASEQUENCER_H
23#define __SOUND_ASEQUENCER_H
24
25#include <linux/ioctl.h>
26#include <sound/asound.h>
27#include <uapi/sound/asequencer.h>
28
29/* helper macro */
30#define snd_seq_event_bounce_ext_data(ev) ((void*)((char *)(ev)->data.ext.ptr + sizeof(struct snd_seq_event_bounce)))
31
32/*
33 * type check macros
34 */
35/* result events: 0-4 */
36#define snd_seq_ev_is_result_type(ev) ((ev)->type < 5)
37/* channel specific events: 5-19 */
38#define snd_seq_ev_is_channel_type(ev) ((ev)->type >= 5 && (ev)->type < 20)
39/* note events: 5-9 */
40#define snd_seq_ev_is_note_type(ev) ((ev)->type >= 5 && (ev)->type < 10)
41/* control events: 10-19 */
42#define snd_seq_ev_is_control_type(ev) ((ev)->type >= 10 && (ev)->type < 20)
43/* queue control events: 30-39 */
44#define snd_seq_ev_is_queue_type(ev) ((ev)->type >= 30 && (ev)->type < 40)
45/* system status messages */
46#define snd_seq_ev_is_message_type(ev) ((ev)->type >= 60 && (ev)->type < 69)
47/* sample messages */
48#define snd_seq_ev_is_sample_type(ev) ((ev)->type >= 70 && (ev)->type < 79)
49/* user-defined messages */
50#define snd_seq_ev_is_user_type(ev) ((ev)->type >= 90 && (ev)->type < 99)
51/* fixed length events: 0-99 */
52#define snd_seq_ev_is_fixed_type(ev) ((ev)->type < 100)
53/* variable length events: 130-139 */
54#define snd_seq_ev_is_variable_type(ev) ((ev)->type >= 130 && (ev)->type < 140)
55/* reserved for kernel */
56#define snd_seq_ev_is_reserved(ev) ((ev)->type >= 150)
57
58/* direct dispatched events */
59#define snd_seq_ev_is_direct(ev) ((ev)->queue == SNDRV_SEQ_QUEUE_DIRECT)
60
61/*
62 * macros to check event flags
63 */
64/* prior events */
65#define snd_seq_ev_is_prior(ev) (((ev)->flags & SNDRV_SEQ_PRIORITY_MASK) == SNDRV_SEQ_PRIORITY_HIGH)
66
67/* event length type */
68#define snd_seq_ev_length_type(ev) ((ev)->flags & SNDRV_SEQ_EVENT_LENGTH_MASK)
69#define snd_seq_ev_is_fixed(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_FIXED)
70#define snd_seq_ev_is_variable(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
71#define snd_seq_ev_is_varusr(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARUSR)
72
73/* time-stamp type */
74#define snd_seq_ev_timestamp_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_STAMP_MASK)
75#define snd_seq_ev_is_tick(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_TICK)
76#define snd_seq_ev_is_real(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_REAL)
77
78/* time-mode type */
79#define snd_seq_ev_timemode_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_MODE_MASK)
80#define snd_seq_ev_is_abstime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_ABS)
81#define snd_seq_ev_is_reltime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_REL)
82
83/* queue sync port */
84#define snd_seq_queue_sync_port(q) ((q) + 16)
85
86#endif /* __SOUND_ASEQUENCER_H */
87

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