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