| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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@suse.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 | typedef struct _snd_pcm_plugin snd_pcm_plugin_t; |
| 26 | typedef struct _snd_pcm_oss_setup snd_pcm_oss_setup_t; |
| 27 | |
| 28 | struct _snd_pcm_oss_setup { |
| 29 | char *task_name; |
| 30 | unsigned int disable:1, |
| 31 | direct:1, |
| 32 | block:1, |
| 33 | nonblock:1, |
| 34 | partialfrag:1, |
| 35 | nosilence:1; |
| 36 | unsigned int periods; |
| 37 | unsigned int period_size; |
| 38 | snd_pcm_oss_setup_t *next; |
| 39 | }; |
| 40 | |
| 41 | typedef struct _snd_pcm_oss_runtime { |
| 42 | unsigned params: 1, /* format/parameter change */ |
| 43 | prepare: 1, /* need to prepare the operation */ |
| 44 | trigger: 1, /* trigger flag */ |
| 45 | sync_trigger: 1; /* sync trigger flag */ |
| 46 | int rate; /* requested rate */ |
| 47 | int format; /* requested OSS format */ |
| 48 | unsigned int channels; /* requested channels */ |
| 49 | unsigned int fragshift; |
| 50 | unsigned int maxfrags; |
| 51 | unsigned int subdivision; /* requested subdivision */ |
| 52 | size_t period_bytes; /* requested period size */ |
| 53 | size_t period_frames; /* period frames for poll */ |
| 54 | size_t period_ptr; /* actual write pointer to period */ |
| 55 | unsigned int periods; |
| 56 | size_t buffer_bytes; /* requested buffer size */ |
| 57 | size_t bytes; /* total # bytes processed */ |
| 58 | size_t mmap_bytes; |
| 59 | char *buffer; /* vmallocated period */ |
| 60 | size_t buffer_used; /* used length from period buffer */ |
| 61 | snd_pcm_plugin_t *plugin_first; |
| 62 | snd_pcm_plugin_t *plugin_last; |
| 63 | unsigned int prev_hw_ptr_interrupt; |
| 64 | } snd_pcm_oss_runtime_t; |
| 65 | |
| 66 | typedef struct _snd_pcm_oss_file { |
| 67 | snd_pcm_substream_t *streams[2]; |
| 68 | } snd_pcm_oss_file_t; |
| 69 | |
| 70 | typedef struct _snd_pcm_oss_substream { |
| 71 | unsigned oss: 1; /* oss mode */ |
| 72 | snd_pcm_oss_setup_t *setup; /* active setup */ |
| 73 | snd_pcm_oss_file_t *file; |
| 74 | } snd_pcm_oss_substream_t; |
| 75 | |
| 76 | typedef struct _snd_pcm_oss_stream { |
| 77 | snd_pcm_oss_setup_t *setup_list; /* setup list */ |
| 78 | struct semaphore setup_mutex; |
| 79 | snd_info_entry_t *proc_entry; |
| 80 | } snd_pcm_oss_stream_t; |
| 81 | |
| 82 | typedef struct _snd_pcm_oss { |
| 83 | int reg; |
| 84 | unsigned int reg_mask; |
| 85 | } snd_pcm_oss_t; |
| 86 | |
| 87 | #endif /* __SOUND_PCM_OSS_H */ |