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/* $OpenBSD: audioio.h,v 1.1 1997/10/07 11:05:01 niklas Exp $ */
/* $NetBSD: audioio.h,v 1.14 1997/08/26 19:03:57 augustss Exp $ */
/*
* Copyright (c) 1991-1993 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Computer Systems
* Engineering Group at Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifndef _SYS_AUDIOIO_H_
#define _SYS_AUDIOIO_H_
/*
* Audio device
*/
struct audio_prinfo {
u_int sample_rate; /* sample rate in bit/s */
u_int channels; /* number of channels, usually 1 or 2 */
u_int precision; /* number of bits/sample */
u_int encoding; /* data encoding (AUDIO_ENCODING_* above) */
u_int gain; /* volume level */
u_int port; /* selected I/O port */
u_long seek; /* BSD extension */
u_int ispare[3];
/* Current state of device: */
u_int samples; /* number of samples */
u_int eof; /* End Of File (zero-size writes) counter */
u_char pause; /* non-zero if paused, zero to resume */
u_char error; /* non-zero if underflow/overflow ocurred */
u_char waiting; /* non-zero if another process hangs in open */
u_char cspare[3];
u_char open; /* non-zero if currently open */
u_char active; /* non-zero if I/O is currently active */
};
typedef struct audio_prinfo audio_prinfo_t;
struct audio_info {
struct audio_prinfo play; /* Info for play (output) side */
struct audio_prinfo record; /* Info for record (input) side */
u_int buffersize; /* total size audio buffer */
/* BSD extensions */
u_int blocksize; /* H/W read/write block size */
u_int hiwat; /* output high water mark */
u_int lowat; /* output low water mark */
u_int backlog; /* samples of output backlog to gen. */
u_int mode; /* current device mode */
#define AUMODE_PLAY 0x01
#define AUMODE_RECORD 0x02
#define AUMODE_PLAY_ALL 0x04 /* don't do real-time correction */
};
typedef struct audio_info audio_info_t;
#ifdef _KERNEL
#define AUDIO_INITINFO(p)\
{ register int n = sizeof(struct audio_info); \
register u_char *q = (u_char *) p; \
while (n-- > 0) *q++ = 0xff; }
#else
#define AUDIO_INITINFO(p)\
(void)memset((void *)(p), 0xff, sizeof(struct audio_info))
#endif
/*
* Parameter for the AUDIO_GETDEV ioctl to determine current
* audio devices.
*/
#define MAX_AUDIO_DEV_LEN 16
typedef struct audio_device {
char name[MAX_AUDIO_DEV_LEN];
char version[MAX_AUDIO_DEV_LEN];
char config[MAX_AUDIO_DEV_LEN];
} audio_device_t;
typedef struct audio_offset {
u_int samples; /* Total number of bytes transferred */
u_int deltablks; /* Blocks transferred since last checked */
u_int offset; /* Physical transfer offset in buffer */
} audio_offset_t;
/*
* Supported audio encodings
*/
/* Encoding ID's */
#define AUDIO_ENCODING_NONE 0 /* no encoding assigned */
#define AUDIO_ENCODING_ULAW 1
#define AUDIO_ENCODING_ALAW 2
#define AUDIO_ENCODING_PCM16 3 /* obsolete */
#define AUDIO_ENCODING_LINEAR AUDIO_ENCODING_PCM16 /* obsolete */
#define AUDIO_ENCODING_PCM8 4 /* obsolete */
#define AUDIO_ENCODING_ADPCM 5
#define AUDIO_ENCODING_SLINEAR_LE 6
#define AUDIO_ENCODING_SLINEAR_BE 7
#define AUDIO_ENCODING_ULINEAR_LE 8
#define AUDIO_ENCODING_ULINEAR_BE 9
#define AUDIO_ENCODING_SLINEAR 10
#define AUDIO_ENCODING_ULINEAR 11
typedef struct audio_encoding {
int index;
char name[MAX_AUDIO_DEV_LEN];
int encoding;
int precision;
int flags;
#define AUDIO_ENCODINGFLAG_EMULATED 1 /* software emulation mode */
} audio_encoding_t;
/*
* Audio device operations
*/
#define AUDIO_GETINFO _IOR('A', 21, struct audio_info)
#define AUDIO_SETINFO _IOWR('A', 22, struct audio_info)
#define AUDIO_DRAIN _IO('A', 23)
#define AUDIO_FLUSH _IO('A', 24)
#define AUDIO_WSEEK _IOR('A', 25, u_long)
#define AUDIO_RERROR _IOR('A', 26, int)
#define AUDIO_GETDEV _IOR('A', 27, struct audio_device)
#define AUDIO_GETENC _IOWR('A', 28, struct audio_encoding)
#define AUDIO_GETFD _IOR('A', 29, int)
#define AUDIO_SETFD _IOWR('A', 30, int)
#define AUDIO_PERROR _IOR('A', 31, int)
#define AUDIO_GETIOFFS _IOR('A', 32, struct audio_offset)
#define AUDIO_GETOOFFS _IOR('A', 33, struct audio_offset)
#define AUDIO_GETPROPS _IOR('A', 34, int)
#define AUDIO_PROP_FULLDUPLEX 0x01
#define AUDIO_PROP_MMAP 0x02
#define AUDIO_PROP_INDEPENDENT 0x04
/*
* Mixer device
*/
#define AUDIO_MIN_GAIN 0
#define AUDIO_MAX_GAIN 255
typedef struct mixer_level {
int num_channels;
u_char level[8]; /* [num_channels] */
} mixer_level_t;
#define AUDIO_MIXER_LEVEL_MONO 0
#define AUDIO_MIXER_LEVEL_LEFT 0
#define AUDIO_MIXER_LEVEL_RIGHT 1
/*
* Device operations
*/
typedef struct audio_mixer_name {
char name[MAX_AUDIO_DEV_LEN];
int msg_id;
} audio_mixer_name_t;
typedef struct mixer_devinfo {
int index;
audio_mixer_name_t label;
int type;
#define AUDIO_MIXER_CLASS 0
#define AUDIO_MIXER_ENUM 1
#define AUDIO_MIXER_SET 2
#define AUDIO_MIXER_VALUE 3
int mixer_class;
int next, prev;
#define AUDIO_MIXER_LAST -1
union {
struct audio_mixer_enum {
int num_mem;
struct {
audio_mixer_name_t label;
int ord;
} member[32];
} e;
struct audio_mixer_set {
int num_mem;
struct {
audio_mixer_name_t label;
int mask;
} member[32];
} s;
struct audio_mixer_value {
audio_mixer_name_t units;
int num_channels;
} v;
} un;
} mixer_devinfo_t;
typedef struct mixer_ctrl {
int dev;
int type;
union {
int ord; /* enum */
int mask; /* set */
mixer_level_t value; /* value */
} un;
} mixer_ctrl_t;
/*
* Mixer operations
*/
#define AUDIO_MIXER_READ _IOWR('M', 0, mixer_ctrl_t)
#define AUDIO_MIXER_WRITE _IOWR('M', 1, mixer_ctrl_t)
#define AUDIO_MIXER_DEVINFO _IOWR('M', 2, mixer_devinfo_t)
/*
* Well known device names
*/
#define AudioNmicrophone "mic"
#define AudioNline "line"
#define AudioNcd "CD"
#define AudioNdac "DAC"
#define AudioNrecord "record"
#define AudioNvolume "volume"
#define AudioNmonitor "monitor"
#define AudioNtreble "treble"
#define AudioNbass "bass"
#define AudioNspeaker "speaker"
#define AudioNheadphone "headphones"
#define AudioNoutput "output"
#define AudioNinput "input"
#define AudioNmaster "master"
#define AudioNstereo "stereo"
#define AudioNmono "mono"
#define AudioNspatial "spatial"
#define AudioNsurround "surround"
#define AudioNpseudo "pseudo"
#define AudioNmute "mute"
#define AudioNenhanced "enhanced"
#define AudioNon "on"
#define AudioNoff "off"
#define AudioNmode "mode"
#define AudioNsource "source"
#define AudioNfmsynth "fmsynth"
#define AudioNwave "wave"
#define AudioNmidi "midi"
#define AudioNmixerout "mixerout"
#define AudioNswap "swap" /* swap left and right channels */
#define AudioEmulaw "mulaw"
#define AudioEalaw "alaw"
#define AudioEadpcm "ADPCM"
#define AudioElinear "linear"
#define AudioElinear_le "linear_le"
#define AudioElinear_be "linear_be"
#define AudioEulinear "ulinear"
#define AudioEulinear_le "ulinear_le"
#define AudioEulinear_be "ulinear_be"
#define AudioCInputs "Inputs"
#define AudioCOutputs "Outputs"
#define AudioCRecord "Record"
#define AudioCMonitor "Monitor"
#define AudioCEqualization "Equalization"
#endif /* !_SYS_AUDIOIO_H_ */
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