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Diffstat (limited to '')
| -rw-r--r-- | include/sound/asequencer.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/sound/asequencer.h b/include/sound/asequencer.h new file mode 100644 index 0000000000..ddbb6bf801 --- /dev/null +++ b/include/sound/asequencer.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Main header file for the ALSA sequencer + * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl> + * (c) 1998-1999 by Jaroslav Kysela <perex@perex.cz> + */ +#ifndef __SOUND_ASEQUENCER_H +#define __SOUND_ASEQUENCER_H + +#include <linux/ioctl.h> +#include <sound/asound.h> +#include <uapi/sound/asequencer.h> + +/* helper macro */ +#define snd_seq_event_bounce_ext_data(ev) ((void*)((char *)(ev)->data.ext.ptr + sizeof(struct snd_seq_event_bounce))) + +/* + * type check macros + */ +/* result events: 0-4 */ +#define snd_seq_ev_is_result_type(ev) ((ev)->type < 5) +/* channel specific events: 5-19 */ +#define snd_seq_ev_is_channel_type(ev) ((ev)->type >= 5 && (ev)->type < 20) +/* note events: 5-9 */ +#define snd_seq_ev_is_note_type(ev) ((ev)->type >= 5 && (ev)->type < 10) +/* control events: 10-19 */ +#define snd_seq_ev_is_control_type(ev) ((ev)->type >= 10 && (ev)->type < 20) +/* queue control events: 30-39 */ +#define snd_seq_ev_is_queue_type(ev) ((ev)->type >= 30 && (ev)->type < 40) +/* system status messages */ +#define snd_seq_ev_is_message_type(ev) ((ev)->type >= 60 && (ev)->type < 69) +/* sample messages */ +#define snd_seq_ev_is_sample_type(ev) ((ev)->type >= 70 && (ev)->type < 79) +/* user-defined messages */ +#define snd_seq_ev_is_user_type(ev) ((ev)->type >= 90 && (ev)->type < 99) +/* fixed length events: 0-99 */ +#define snd_seq_ev_is_fixed_type(ev) ((ev)->type < 100) +/* variable length events: 130-139 */ +#define snd_seq_ev_is_variable_type(ev) ((ev)->type >= 130 && (ev)->type < 140) +/* reserved for kernel */ +#define snd_seq_ev_is_reserved(ev) ((ev)->type >= 150) + +/* direct dispatched events */ +#define snd_seq_ev_is_direct(ev) ((ev)->queue == SNDRV_SEQ_QUEUE_DIRECT) + +/* + * macros to check event flags + */ +/* prior events */ +#define snd_seq_ev_is_prior(ev) (((ev)->flags & SNDRV_SEQ_PRIORITY_MASK) == SNDRV_SEQ_PRIORITY_HIGH) + +/* event length type */ +#define snd_seq_ev_length_type(ev) ((ev)->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) +#define snd_seq_ev_is_fixed(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_FIXED) +#define snd_seq_ev_is_variable(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE) +#define snd_seq_ev_is_varusr(ev) (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARUSR) + +/* time-stamp type */ +#define snd_seq_ev_timestamp_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_STAMP_MASK) +#define snd_seq_ev_is_tick(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_TICK) +#define snd_seq_ev_is_real(ev) (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_REAL) + +/* time-mode type */ +#define snd_seq_ev_timemode_type(ev) ((ev)->flags & SNDRV_SEQ_TIME_MODE_MASK) +#define snd_seq_ev_is_abstime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_ABS) +#define snd_seq_ev_is_reltime(ev) (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_REL) + +/* check whether the given event is a UMP event */ +#define snd_seq_ev_is_ump(ev) \ + (IS_ENABLED(CONFIG_SND_SEQ_UMP) && ((ev)->flags & SNDRV_SEQ_EVENT_UMP)) + +/* queue sync port */ +#define snd_seq_queue_sync_port(q) ((q) + 16) + +#endif /* __SOUND_ASEQUENCER_H */ |