mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
2.0 KiB
75 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
|
#ifndef __SOUND_PCM_OSS_H |
|
#define __SOUND_PCM_OSS_H |
|
|
|
/* |
|
* Digital Audio (PCM) - OSS compatibility abstract layer |
|
* Copyright (c) by Jaroslav Kysela <[email protected]> |
|
*/ |
|
|
|
struct snd_pcm_oss_setup { |
|
char *task_name; |
|
unsigned int disable:1, |
|
direct:1, |
|
block:1, |
|
nonblock:1, |
|
partialfrag:1, |
|
nosilence:1, |
|
buggyptr:1; |
|
unsigned int periods; |
|
unsigned int period_size; |
|
struct snd_pcm_oss_setup *next; |
|
}; |
|
|
|
struct snd_pcm_oss_runtime { |
|
unsigned params: 1, /* format/parameter change */ |
|
prepare: 1, /* need to prepare the operation */ |
|
trigger: 1, /* trigger flag */ |
|
sync_trigger: 1; /* sync trigger flag */ |
|
int rate; /* requested rate */ |
|
int format; /* requested OSS format */ |
|
unsigned int channels; /* requested channels */ |
|
unsigned int fragshift; |
|
unsigned int maxfrags; |
|
unsigned int subdivision; /* requested subdivision */ |
|
size_t period_bytes; /* requested period size */ |
|
size_t period_frames; /* period frames for poll */ |
|
size_t period_ptr; /* actual write pointer to period */ |
|
unsigned int periods; |
|
size_t buffer_bytes; /* requested buffer size */ |
|
size_t bytes; /* total # bytes processed */ |
|
size_t mmap_bytes; |
|
char *buffer; /* vmallocated period */ |
|
size_t buffer_used; /* used length from period buffer */ |
|
struct mutex params_lock; |
|
atomic_t rw_ref; /* concurrent read/write accesses */ |
|
#ifdef CONFIG_SND_PCM_OSS_PLUGINS |
|
struct snd_pcm_plugin *plugin_first; |
|
struct snd_pcm_plugin *plugin_last; |
|
#endif |
|
unsigned int prev_hw_ptr_period; |
|
}; |
|
|
|
struct snd_pcm_oss_file { |
|
struct snd_pcm_substream *streams[2]; |
|
}; |
|
|
|
struct snd_pcm_oss_substream { |
|
unsigned oss: 1; /* oss mode */ |
|
struct snd_pcm_oss_setup setup; /* active setup */ |
|
}; |
|
|
|
struct snd_pcm_oss_stream { |
|
struct snd_pcm_oss_setup *setup_list; /* setup list */ |
|
struct mutex setup_mutex; |
|
#ifdef CONFIG_SND_VERBOSE_PROCFS |
|
struct snd_info_entry *proc_entry; |
|
#endif |
|
}; |
|
|
|
struct snd_pcm_oss { |
|
int reg; |
|
unsigned int reg_mask; |
|
}; |
|
|
|
#endif /* __SOUND_PCM_OSS_H */
|
|
|