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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 | ||
25 | struct 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 | ||
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 */ | |
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 | ||
67 | struct snd_pcm_oss_file { | |
68 | struct snd_pcm_substream *streams[2]; | |
69 | }; | |
70 | ||
71 | struct snd_pcm_oss_substream { | |
72 | unsigned oss: 1; /* oss mode */ | |
73 | struct snd_pcm_oss_setup setup; /* active setup */ | |
74 | }; | |
75 | ||
76 | struct 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 | ||
84 | struct snd_pcm_oss { | |
85 | int reg; | |
86 | unsigned int reg_mask; | |
87 | }; | |
88 | ||
89 | #endif /* __SOUND_PCM_OSS_H */ |