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| 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 |
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