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-rw-r--r--include/sound/asequencer.h71
1 files changed, 71 insertions, 0 deletions
diff --git a/include/sound/asequencer.h b/include/sound/asequencer.h
new file mode 100644
index 000000000..18d4bc3ee
--- /dev/null
+++ b/include/sound/asequencer.h
@@ -0,0 +1,71 @@
+/* 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)
+
+/* queue sync port */
+#define snd_seq_queue_sync_port(q) ((q) + 16)
+
+#endif /* __SOUND_ASEQUENCER_H */