123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990 |
- #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;
- #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 */
|