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 38