linux/include/sound/asequencer.h
<<
>>
Prefs
   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
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.