1 files changed, 45 insertions, 0 deletions
diff --git a/sound/core/seq/seq_prioq.h b/sound/core/seq/seq_prioq.h
new file mode 100644
index 000000000..5811a87de
--- /dev/null
+++ b/sound/core/seq/seq_prioq.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *   ALSA sequencer Priority Queue
+ *   Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
+ */
+#ifndef __SND_SEQ_PRIOQ_H
+#define __SND_SEQ_PRIOQ_H
+
+#include "seq_memory.h"
+
+
+/* === PRIOQ === */
+
+struct snd_seq_prioq {
+	struct snd_seq_event_cell *head;      /* pointer to head of prioq */
+	struct snd_seq_event_cell *tail;      /* pointer to tail of prioq */
+	int cells;
+	spinlock_t lock;
+};
+
+
+/* create new prioq (constructor) */
+struct snd_seq_prioq *snd_seq_prioq_new(void);
+
+/* delete prioq (destructor) */
+void snd_seq_prioq_delete(struct snd_seq_prioq **fifo);
+
+/* enqueue cell to prioq */
+int snd_seq_prioq_cell_in(struct snd_seq_prioq *f, struct snd_seq_event_cell *cell);
+
+/* dequeue cell from prioq */ 
+struct snd_seq_event_cell *snd_seq_prioq_cell_out(struct snd_seq_prioq *f,
+						  void *current_time);
+
+/* return number of events available in prioq */
+int snd_seq_prioq_avail(struct snd_seq_prioq *f);
+
+/* client left queue */
+void snd_seq_prioq_leave(struct snd_seq_prioq *f, int client, int timestamp);        
+
+/* Remove events */
+void snd_seq_prioq_remove_events(struct snd_seq_prioq *f, int client,
+				 struct snd_seq_remove_events *info);
+
+#endif