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/*
* Purpose: Definitions for server applications using the oss_userdev driver.
*
* This file is part of the oss_userdev driver included in Open Sound
* System. However this file is not part of the OSS API.
*
* The ioctl calls defined in this file can only be used in dedicated server
* applications that provide virtual audio device services to other
* applications. For example the userdev driver can be used to create virtual
* audio device that connects to the actual soundcard in another system
* over internet.
*
* Applications that use the client devices will use only the OSS ioctl calls
* defined in soundcard.h. They cannot use anything from this file.
*/
#ifndef OSS_USERDEV_EXPORTS_H
#define OSS_USERDEV_EXPORTS_H
/*
*
* This file is part of Open Sound System.
*
* Copyright (C) 4Front Technologies 1996-2008.
*
* This this source file is released under GPL v2 license (no other versions).
* See the COPYING file included in the main directory of this source
* distribution for the license terms and conditions.
*
*/
typedef struct
{
char name[50]; /* Audio device name to be shown to the users */
unsigned int flags; /* Not suported for the time being */
#define USERDEV_F_VMIX_ATTACH 0x00000001 /* Attach vmix */
#define USERDEV_F_VMIX_PRECREATE 0x00000002 /* Precreate vmix channels */
#define USERDEV_F_ERROR_ON_NO_CLIENT 0x00000004 /* Return EIO from server read/write if no client is connected. */
#define USERDEV_F_VMIX_PRIVATENODE 0x00000008 /* Create private device file for the client */
oss_devnode_t devnode; /* Returns the device file name that clients should open */
unsigned int match_method;
#define UD_MATCH_ANY 0
#define UD_MATCH_UID 1
#define UD_MATCH_GID 2
#define UD_MATCH_PGID 3
unsigned int match_key;
/*
* Poll interval in milliseconds. Poll interval determines
* the fragment size to be used by the device.
*/
unsigned int poll_interval;
} userdev_create_t;
#define USERDEV_MAX_MIXERS 64
typedef struct
{
char name[16];
int parent;
int num; /* Return parameter */
} userdev_mixgroup_t;
typedef struct
{
char name[16];
int parent;
int num; /* Return parameter */
int type; /* MIXT_* */
int flags; /* MIXF_* */
int index; /* Index to the values[] array */
int maxvalue;
int offset;
char enum_choises[2048];
unsigned char enum_present[32]; /* Mask of allowed enum values */
int control_no; /* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
int rgbcolor; /* OSS_RGB_* */
} userdev_mixctl_t;
typedef struct
{
int values[USERDEV_MAX_MIXERS];
} userdev_mixvalues_t;
#define USERDEV_CREATE_INSTANCE __SIOWR('u', 1, userdev_create_t)
#define USERDEV_GET_CLIENTCOUNT __SIOR ('u', 2, int)
#define USERDEV_CREATE_MIXGROUP __SIOWR('u', 3, userdev_mixgroup_t)
#define USERDEV_CREATE_MIXCTL __SIOWR('u', 4, userdev_mixctl_t)
#define USERDEV_GET_MIX_CHANGECOUNT __SIOWR('u', 5, int)
#define USERDEV_SET_MIXERS __SIOWR('u', 6, userdev_mixvalues_t)
#define USERDEV_GET_MIXERS __SIOWR('u', 7, userdev_mixvalues_t)
#endif
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