diff options
Diffstat (limited to 'include/sound/pcm_oss.h')
| -rw-r--r-- | include/sound/pcm_oss.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/include/sound/pcm_oss.h b/include/sound/pcm_oss.h new file mode 100644 index 000000000..12bbf8c81 --- /dev/null +++ b/include/sound/pcm_oss.h @@ -0,0 +1,90 @@ +#ifndef __SOUND_PCM_OSS_H +#define __SOUND_PCM_OSS_H + +/* + * Digital Audio (PCM) - OSS compatibility abstract layer + * Copyright (c) by Jaroslav Kysela <perex@perex.cz> + * + * + * 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 + * + */ + +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 */ |