diff options
Diffstat (limited to 'sound/core/seq/oss/seq_oss_readq.h')
-rw-r--r-- | sound/core/seq/oss/seq_oss_readq.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sound/core/seq/oss/seq_oss_readq.h b/sound/core/seq/oss/seq_oss_readq.h new file mode 100644 index 000000000000..303b9298f206 --- /dev/null +++ b/sound/core/seq/oss/seq_oss_readq.h @@ -0,0 +1,56 @@ +/* + * OSS compatible sequencer driver + * read fifo queue + * + * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifndef __SEQ_OSS_READQ_H +#define __SEQ_OSS_READQ_H + +#include "seq_oss_device.h" + + +/* + * definition of read queue + */ +struct seq_oss_readq_t { + evrec_t *q; + int qlen; + int maxlen; + int head, tail; + unsigned long pre_event_timeout; + unsigned long input_time; + wait_queue_head_t midi_sleep; + spinlock_t lock; +}; + +seq_oss_readq_t *snd_seq_oss_readq_new(seq_oss_devinfo_t *dp, int maxlen); +void snd_seq_oss_readq_delete(seq_oss_readq_t *q); +void snd_seq_oss_readq_clear(seq_oss_readq_t *readq); +unsigned int snd_seq_oss_readq_poll(seq_oss_readq_t *readq, struct file *file, poll_table *wait); +int snd_seq_oss_readq_puts(seq_oss_readq_t *readq, int dev, unsigned char *data, int len); +int snd_seq_oss_readq_put_event(seq_oss_readq_t *readq, evrec_t *ev); +int snd_seq_oss_readq_put_timestamp(seq_oss_readq_t *readq, unsigned long curt, int seq_mode); +int snd_seq_oss_readq_pick(seq_oss_readq_t *q, evrec_t *rec); +void snd_seq_oss_readq_wait(seq_oss_readq_t *q); +void snd_seq_oss_readq_free(seq_oss_readq_t *q); + +#define snd_seq_oss_readq_lock(q, flags) spin_lock_irqsave(&(q)->lock, flags) +#define snd_seq_oss_readq_unlock(q, flags) spin_unlock_irqrestore(&(q)->lock, flags) + +#endif |