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1#ifndef __SOUND_PCM_OSS_H
2#define __SOUND_PCM_OSS_H
3
4/*
5 * Digital Audio (PCM) - OSS compatibility abstract layer
6 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
7 *
8 *
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.
13 *
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.
18 *
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
22 *
23 */
24
25struct snd_pcm_oss_setup {
26 char *task_name;
27 unsigned int disable:1,
28 direct:1,
29 block:1,
30 nonblock:1,
31 partialfrag:1,
32 nosilence:1,
33 buggyptr:1;
34 unsigned int periods;
35 unsigned int period_size;
36 struct snd_pcm_oss_setup *next;
37};
38
39struct 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 */
53 unsigned int periods;
54 size_t buffer_bytes; /* requested buffer size */
55 size_t bytes; /* total # bytes processed */
56 size_t mmap_bytes;
57 char *buffer; /* vmallocated period */
58 size_t buffer_used; /* used length from period buffer */
59 struct mutex params_lock;
60#ifdef CONFIG_SND_PCM_OSS_PLUGINS
61 struct snd_pcm_plugin *plugin_first;
62 struct snd_pcm_plugin *plugin_last;
63#endif
64 unsigned int prev_hw_ptr_period;
65};
66
67struct snd_pcm_oss_file {
68 struct snd_pcm_substream *streams[2];
69};
70
71struct snd_pcm_oss_substream {
72 unsigned oss: 1; /* oss mode */
73 struct snd_pcm_oss_setup setup; /* active setup */
74};
75
76struct snd_pcm_oss_stream {
77 struct snd_pcm_oss_setup *setup_list; /* setup list */
78 struct mutex setup_mutex;
79#ifdef CONFIG_SND_VERBOSE_PROCFS
80 struct snd_info_entry *proc_entry;
81#endif
82};
83
84struct snd_pcm_oss {
85 int reg;
86 unsigned int reg_mask;
87};
88
89#endif /* __SOUND_PCM_OSS_H */
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2#ifndef __SOUND_PCM_OSS_H
3#define __SOUND_PCM_OSS_H
4
5/*
6 * Digital Audio (PCM) - OSS compatibility abstract layer
7 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
8 */
9
10struct snd_pcm_oss_setup {
11 char *task_name;
12 unsigned int disable:1,
13 direct:1,
14 block:1,
15 nonblock:1,
16 partialfrag:1,
17 nosilence:1,
18 buggyptr:1;
19 unsigned int periods;
20 unsigned int period_size;
21 struct snd_pcm_oss_setup *next;
22};
23
24struct snd_pcm_oss_runtime {
25 unsigned params: 1, /* format/parameter change */
26 prepare: 1, /* need to prepare the operation */
27 trigger: 1, /* trigger flag */
28 sync_trigger: 1; /* sync trigger flag */
29 int rate; /* requested rate */
30 int format; /* requested OSS format */
31 unsigned int channels; /* requested channels */
32 unsigned int fragshift;
33 unsigned int maxfrags;
34 unsigned int subdivision; /* requested subdivision */
35 size_t period_bytes; /* requested period size */
36 size_t period_frames; /* period frames for poll */
37 size_t period_ptr; /* actual write pointer to period */
38 unsigned int periods;
39 size_t buffer_bytes; /* requested buffer size */
40 size_t bytes; /* total # bytes processed */
41 size_t mmap_bytes;
42 char *buffer; /* vmallocated period */
43 size_t buffer_used; /* used length from period buffer */
44 struct mutex params_lock;
45 atomic_t rw_ref; /* concurrent read/write accesses */
46#ifdef CONFIG_SND_PCM_OSS_PLUGINS
47 struct snd_pcm_plugin *plugin_first;
48 struct snd_pcm_plugin *plugin_last;
49#endif
50 unsigned int prev_hw_ptr_period;
51};
52
53struct snd_pcm_oss_file {
54 struct snd_pcm_substream *streams[2];
55};
56
57struct snd_pcm_oss_substream {
58 unsigned oss: 1; /* oss mode */
59 struct snd_pcm_oss_setup setup; /* active setup */
60};
61
62struct snd_pcm_oss_stream {
63 struct snd_pcm_oss_setup *setup_list; /* setup list */
64 struct mutex setup_mutex;
65#ifdef CONFIG_SND_VERBOSE_PROCFS
66 struct snd_info_entry *proc_entry;
67#endif
68};
69
70struct snd_pcm_oss {
71 int reg;
72 unsigned int reg_mask;
73};
74
75#endif /* __SOUND_PCM_OSS_H */