#ifndef __SOUND_PCM_OSS_H #define __SOUND_PCM_OSS_H /* * Digital Audio (PCM) - OSS compatibility abstract layer * Copyright (c) by Jaroslav Kysela <perex@suse.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 * */ typedef struct _snd_pcm_plugin snd_pcm_plugin_t; typedef struct _snd_pcm_oss_setup snd_pcm_oss_setup_t; struct _snd_pcm_oss_setup { char *task_name; unsigned int disable:1, direct:1, block:1, nonblock:1, partialfrag:1, nosilence:1; unsigned int periods; unsigned int period_size; snd_pcm_oss_setup_t *next; }; typedef 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 */ snd_pcm_plugin_t *plugin_first; snd_pcm_plugin_t *plugin_last; unsigned int prev_hw_ptr_interrupt; } snd_pcm_oss_runtime_t; typedef struct _snd_pcm_oss_file { snd_pcm_substream_t *streams[2]; } snd_pcm_oss_file_t; typedef struct _snd_pcm_oss_substream { unsigned oss: 1; /* oss mode */ snd_pcm_oss_setup_t *setup; /* active setup */ snd_pcm_oss_file_t *file; } snd_pcm_oss_substream_t; typedef struct _snd_pcm_oss_stream { snd_pcm_oss_setup_t *setup_list; /* setup list */ struct semaphore setup_mutex; snd_info_entry_t *proc_entry; } snd_pcm_oss_stream_t; typedef struct _snd_pcm_oss { int reg; unsigned int reg_mask; } snd_pcm_oss_t; #endif /* __SOUND_PCM_OSS_H */