1 #ifndef __SOUND_PCM_OSS_H
2 #define __SOUND_PCM_OSS_H
5 * Digital Audio (PCM) - OSS compatibility abstract layer
6 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 struct snd_pcm_oss_setup
{
27 unsigned int disable
:1,
35 unsigned int period_size
;
36 struct snd_pcm_oss_setup
*next
;
39 struct snd_pcm_oss_runtime
{
40 unsigned params
: 1, /* format/parameter change */
41 prepare
: 1, /* need to prepare the operation */
42 trigger
: 1, /* trigger flag */
43 sync_trigger
: 1; /* sync trigger flag */
44 int rate
; /* requested rate */
45 int format
; /* requested OSS format */
46 unsigned int channels
; /* requested channels */
47 unsigned int fragshift
;
48 unsigned int maxfrags
;
49 unsigned int subdivision
; /* requested subdivision */
50 size_t period_bytes
; /* requested period size */
51 size_t period_frames
; /* period frames for poll */
52 size_t period_ptr
; /* actual write pointer to period */
54 size_t buffer_bytes
; /* requested buffer size */
55 size_t bytes
; /* total # bytes processed */
57 char *buffer
; /* vmallocated period */
58 size_t buffer_used
; /* used length from period buffer */
59 #ifdef CONFIG_SND_PCM_OSS_PLUGINS
60 struct snd_pcm_plugin
*plugin_first
;
61 struct snd_pcm_plugin
*plugin_last
;
63 unsigned int prev_hw_ptr_interrupt
;
66 struct snd_pcm_oss_file
{
67 struct snd_pcm_substream
*streams
[2];
70 struct snd_pcm_oss_substream
{
71 unsigned oss
: 1; /* oss mode */
72 struct snd_pcm_oss_setup setup
; /* active setup */
75 struct snd_pcm_oss_stream
{
76 struct snd_pcm_oss_setup
*setup_list
; /* setup list */
77 struct mutex setup_mutex
;
78 #ifdef CONFIG_SND_VERBOSE_PROCFS
79 struct snd_info_entry
*proc_entry
;
85 unsigned int reg_mask
;
88 #endif /* __SOUND_PCM_OSS_H */
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