LXR linux/include/sound/asequencer.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 *  Main header file for the ALSA sequencer
   4 *  Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
   5 *            (c) 1998-1999 by Jaroslav Kysela <perex@perex.cz>
   6 */
   7#ifndef __SOUND_ASEQUENCER_H
   8#define __SOUND_ASEQUENCER_H
   9
  10#include <linux/ioctl.h>
  11#include <sound/asound.h>
  12#include <uapi/sound/asequencer.h>
  13
  14/* helper macro */
  15#define snd_seq_event_bounce_ext_data(ev) ((void*)((char *)(ev)->data.ext.ptr + sizeof(struct snd_seq_event_bounce)))
  16
  17/*
  18 * type check macros
  19 */
  20/* result events: 0-4 */
  21#define snd_seq_ev_is_result_type(ev)   ((ev)->type < 5)
  22/* channel specific events: 5-19 */
  23#define snd_seq_ev_is_channel_type(ev)  ((ev)->type >= 5 && (ev)->type < 20)
  24/* note events: 5-9 */
  25#define snd_seq_ev_is_note_type(ev)     ((ev)->type >= 5 && (ev)->type < 10)
  26/* control events: 10-19 */
  27#define snd_seq_ev_is_control_type(ev)  ((ev)->type >= 10 && (ev)->type < 20)
  28/* queue control events: 30-39 */
  29#define snd_seq_ev_is_queue_type(ev)    ((ev)->type >= 30 && (ev)->type < 40)
  30/* system status messages */
  31#define snd_seq_ev_is_message_type(ev)  ((ev)->type >= 60 && (ev)->type < 69)
  32/* sample messages */
  33#define snd_seq_ev_is_sample_type(ev)   ((ev)->type >= 70 && (ev)->type < 79)
  34/* user-defined messages */
  35#define snd_seq_ev_is_user_type(ev)     ((ev)->type >= 90 && (ev)->type < 99)
  36/* fixed length events: 0-99 */
  37#define snd_seq_ev_is_fixed_type(ev)    ((ev)->type < 100)
  38/* variable length events: 130-139 */
  39#define snd_seq_ev_is_variable_type(ev) ((ev)->type >= 130 && (ev)->type < 140)
  40/* reserved for kernel */
  41#define snd_seq_ev_is_reserved(ev)      ((ev)->type >= 150)
  42
  43/* direct dispatched events */
  44#define snd_seq_ev_is_direct(ev)        ((ev)->queue == SNDRV_SEQ_QUEUE_DIRECT)
  45
  46/*
  47 * macros to check event flags
  48 */
  49/* prior events */
  50#define snd_seq_ev_is_prior(ev)         (((ev)->flags & SNDRV_SEQ_PRIORITY_MASK) == SNDRV_SEQ_PRIORITY_HIGH)
  51
  52/* event length type */
  53#define snd_seq_ev_length_type(ev)      ((ev)->flags & SNDRV_SEQ_EVENT_LENGTH_MASK)
  54#define snd_seq_ev_is_fixed(ev)         (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_FIXED)
  55#define snd_seq_ev_is_variable(ev)      (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
  56#define snd_seq_ev_is_varusr(ev)        (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARUSR)
  57
  58/* time-stamp type */
  59#define snd_seq_ev_timestamp_type(ev)   ((ev)->flags & SNDRV_SEQ_TIME_STAMP_MASK)
  60#define snd_seq_ev_is_tick(ev)          (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_TICK)
  61#define snd_seq_ev_is_real(ev)          (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_REAL)
  62
  63/* time-mode type */
  64#define snd_seq_ev_timemode_type(ev)    ((ev)->flags & SNDRV_SEQ_TIME_MODE_MASK)
  65#define snd_seq_ev_is_abstime(ev)       (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_ABS)
  66#define snd_seq_ev_is_reltime(ev)       (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_REL)
  67
  68/* queue sync port */
  69#define snd_seq_queue_sync_port(q)      ((q) + 16)
  70
  71#endif /* __SOUND_ASEQUENCER_H */
  72