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90 lines
2.7 KiB
90 lines
2.7 KiB
#ifndef __SOUND_PCM_OSS_H |
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#define __SOUND_PCM_OSS_H |
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/* |
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* Digital Audio (PCM) - OSS compatibility abstract layer |
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
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* |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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struct snd_pcm_oss_setup { |
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char *task_name; |
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unsigned int disable:1, |
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direct:1, |
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block:1, |
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nonblock:1, |
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partialfrag:1, |
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nosilence:1, |
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buggyptr:1; |
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unsigned int periods; |
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unsigned int period_size; |
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struct snd_pcm_oss_setup *next; |
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}; |
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struct snd_pcm_oss_runtime { |
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unsigned params: 1, /* format/parameter change */ |
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prepare: 1, /* need to prepare the operation */ |
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trigger: 1, /* trigger flag */ |
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sync_trigger: 1; /* sync trigger flag */ |
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int rate; /* requested rate */ |
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int format; /* requested OSS format */ |
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unsigned int channels; /* requested channels */ |
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unsigned int fragshift; |
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unsigned int maxfrags; |
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unsigned int subdivision; /* requested subdivision */ |
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size_t period_bytes; /* requested period size */ |
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size_t period_frames; /* period frames for poll */ |
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size_t period_ptr; /* actual write pointer to period */ |
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unsigned int periods; |
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size_t buffer_bytes; /* requested buffer size */ |
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size_t bytes; /* total # bytes processed */ |
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size_t mmap_bytes; |
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char *buffer; /* vmallocated period */ |
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size_t buffer_used; /* used length from period buffer */ |
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struct mutex params_lock; |
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atomic_t rw_ref; /* concurrent read/write accesses */ |
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#ifdef CONFIG_SND_PCM_OSS_PLUGINS |
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struct snd_pcm_plugin *plugin_first; |
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struct snd_pcm_plugin *plugin_last; |
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#endif |
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unsigned int prev_hw_ptr_period; |
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}; |
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struct snd_pcm_oss_file { |
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struct snd_pcm_substream *streams[2]; |
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}; |
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struct snd_pcm_oss_substream { |
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unsigned oss: 1; /* oss mode */ |
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struct snd_pcm_oss_setup setup; /* active setup */ |
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}; |
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struct snd_pcm_oss_stream { |
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struct snd_pcm_oss_setup *setup_list; /* setup list */ |
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struct mutex setup_mutex; |
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#ifdef CONFIG_SND_VERBOSE_PROCFS |
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struct snd_info_entry *proc_entry; |
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#endif |
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}; |
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struct snd_pcm_oss { |
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int reg; |
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unsigned int reg_mask; |
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}; |
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#endif /* __SOUND_PCM_OSS_H */
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