sound/core/seq/oss/seq_oss_writeq.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * OSS compatible sequencer driver
   4  * write priority queue
   5  *
   6  * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>
   7  */
   8
   9 #ifndef __SEQ_OSS_WRITEQ_H
  10 #define __SEQ_OSS_WRITEQ_H
  11
  12 #include "seq_oss_device.h"
  13
  14
  15 struct seq_oss_writeq {
  16         struct seq_oss_devinfo *dp;
  17         int maxlen;
  18         abstime_t sync_time;
  19         int sync_event_put;
  20         wait_queue_head_t sync_sleep;
  21         spinlock_t sync_lock;
  22 };
  23
  24
  25 /*
  26  * seq_oss_writeq.c
  27  */
  28 struct seq_oss_writeq *snd_seq_oss_writeq_new(struct seq_oss_devinfo *dp, int maxlen);
  29 void snd_seq_oss_writeq_delete(struct seq_oss_writeq *q);
  30 void snd_seq_oss_writeq_clear(struct seq_oss_writeq *q);
  31 int snd_seq_oss_writeq_sync(struct seq_oss_writeq *q);
  32 void snd_seq_oss_writeq_wakeup(struct seq_oss_writeq *q, abstime_t time);
  33 int snd_seq_oss_writeq_get_free_size(struct seq_oss_writeq *q);
  34 void snd_seq_oss_writeq_set_output(struct seq_oss_writeq *q, int size);
  35
  36
  37 #endif