Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * OSS compatible sequencer driver |
| 3 | * read fifo queue |
| 4 | * |
| 5 | * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #ifndef __SEQ_OSS_READQ_H |
| 23 | #define __SEQ_OSS_READQ_H |
| 24 | |
| 25 | #include "seq_oss_device.h" |
| 26 | |
| 27 | |
| 28 | /* |
| 29 | * definition of read queue |
| 30 | */ |
| 31 | struct seq_oss_readq_t { |
| 32 | evrec_t *q; |
| 33 | int qlen; |
| 34 | int maxlen; |
| 35 | int head, tail; |
| 36 | unsigned long pre_event_timeout; |
| 37 | unsigned long input_time; |
| 38 | wait_queue_head_t midi_sleep; |
| 39 | spinlock_t lock; |
| 40 | }; |
| 41 | |
| 42 | seq_oss_readq_t *snd_seq_oss_readq_new(seq_oss_devinfo_t *dp, int maxlen); |
| 43 | void snd_seq_oss_readq_delete(seq_oss_readq_t *q); |
| 44 | void snd_seq_oss_readq_clear(seq_oss_readq_t *readq); |
| 45 | unsigned int snd_seq_oss_readq_poll(seq_oss_readq_t *readq, struct file *file, poll_table *wait); |
| 46 | int snd_seq_oss_readq_puts(seq_oss_readq_t *readq, int dev, unsigned char *data, int len); |
| 47 | int snd_seq_oss_readq_put_event(seq_oss_readq_t *readq, evrec_t *ev); |
| 48 | int snd_seq_oss_readq_put_timestamp(seq_oss_readq_t *readq, unsigned long curt, int seq_mode); |
| 49 | int snd_seq_oss_readq_pick(seq_oss_readq_t *q, evrec_t *rec); |
| 50 | void snd_seq_oss_readq_wait(seq_oss_readq_t *q); |
| 51 | void snd_seq_oss_readq_free(seq_oss_readq_t *q); |
| 52 | |
| 53 | #define snd_seq_oss_readq_lock(q, flags) spin_lock_irqsave(&(q)->lock, flags) |
| 54 | #define snd_seq_oss_readq_unlock(q, flags) spin_unlock_irqrestore(&(q)->lock, flags) |
| 55 | |
| 56 | #endif |