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 /* 15 * type check macros 16 */ 17 /* result events: 0-4 */ 18 #define snd_seq_ev_is_result_type(ev) ((ev)->type < 5) 19 /* channel specific events: 5-19 */ 20 #define snd_seq_ev_is_channel_type(ev) ((ev)->type >= 5 && (ev)->type < 20) 21 /* note events: 5-9 */ 22 #define snd_seq_ev_is_note_type(ev) ((ev)->type >= 5 && (ev)->type < 10) 23 /* control events: 10-19 */ 24 #define snd_seq_ev_is_control_type(ev) ((ev)->type >= 10 && (ev)->type < 20) 25 /* queue control events: 30-39 */ 26 #define snd_seq_ev_is_queue_type(ev) ((ev)->type >= 30 && (ev)->type < 40) 27 /* system status messages */ 28 #define snd_seq_ev_is_message_type(ev) ((ev)->type >= 60 && (ev)->type < 69) 29 /* sample messages */ 30 #define snd_seq_ev_is_sample_type(ev) ((ev)->type >= 70 && (ev)->type < 79) 31 /* user-defined messages */ 32 #define snd_seq_ev_is_user_type(ev) ((ev)->type >= 90 && (ev)->type < 99) 33 /* fixed length events: 0-99 */ 34 #define snd_seq_ev_is_fixed_type(ev) ((ev)->type < 100) 35 /* variable length events: 130-139 */ 36 #define snd_seq_ev_is_variable_type(ev) ((ev)->type >= 130 && (ev)->type < 140) 37 /* reserved for kernel */ 38 #define snd_seq_ev_is_reserved(ev) ((ev)->type >= 150) 39 40 /* direct dispatched events */ 41 #define snd_seq_ev_is_direct(ev) ((ev)->queue == SNDRV_SEQ_QUEUE_DIRECT) 42 43 /* 44 * macros to check event flags 45 */ 46 /* prior events */ 47 #define snd_seq_ev_is_prior(ev) (((ev)->flags & SNDRV_SEQ_PRIORITY_MASK) == SNDRV_SEQ_PRIORITY_HIGH) 48 49 /* event length type */ 50 #define snd_seq_ev_length_type(ev) ((ev)->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) 51 #define snd_seq_ev_is_fixed(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_FIXED) 52 #define snd_seq_ev_is_variable(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE) 53 #define snd_seq_ev_is_varusr(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARUSR) 54 55 /* time-stamp type */ 56 #define snd_seq_ev_timestamp_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_STAMP_MASK) 57 #define snd_seq_ev_is_tick(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_TICK) 58 #define snd_seq_ev_is_real(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_REAL) 59 60 /* time-mode type */ 61 #define snd_seq_ev_timemode_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_MODE_MASK) 62 #define snd_seq_ev_is_abstime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_ABS) 63 #define snd_seq_ev_is_reltime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_REL) 64 65 /* check whether the given event is a UMP event */ 66 #define snd_seq_ev_is_ump(ev) \ 67 (IS_ENABLED(CONFIG_SND_SEQ_UMP) && ((ev)->flags & SNDRV_SEQ_EVENT_UMP)) 68 69 /* queue sync port */ 70 #define snd_seq_queue_sync_port(q) ((q) + 16) 71 72 #endif /* __SOUND_ASEQUENCER_H */ 73