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 /* check whether the given event is a UMP event */ 69 #define snd_seq_ev_is_ump(ev) \ 70 (IS_ENABLED(CONFIG_SND_SEQ_UMP) && ((ev)->flags & SNDRV_SEQ_EVENT_UMP)) 71 72 /* queue sync port */ 73 #define snd_seq_queue_sync_port(q) ((q) + 16) 74 75 #endif /* __SOUND_ASEQUENCER_H */ 76