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File: [cvs.NetBSD.org] / src / lib / libossaudio / soundcard.h (download)

Revision 1.24, Tue Sep 9 10:45:18 2014 UTC (5 years, 6 months ago) by nat
Branch: MAIN
CVS Tags: prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, HEAD
Changes since 1.23: +11 -2 lines

Add missing defines for 16, 24 and 32 bit NE and OE formats.
Add the ability to set 24 and 32 bit precision.

This commit was approved by wiz@

/*	$NetBSD: soundcard.h,v 1.24 2014/09/09 10:45:18 nat Exp $	*/

/*-
 * Copyright (c) 1997 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Lennart Augustsson.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/*
 * WARNING!  WARNING!
 * This is an OSS (Linux) audio emulator.
 * Use the Native NetBSD API for developing new code, and this
 * only for compiling Linux programs.
 */

#ifndef _SOUNDCARD_H_
#define _SOUNDCARD_H_

#ifndef SOUND_VERSION
#define SOUND_VERSION 0x030001
#endif

#define	SNDCTL_DSP_RESET		_IO  ('P', 0)
#define	SNDCTL_DSP_SYNC			_IO  ('P', 1)
#define	SNDCTL_DSP_SPEED		_IOWR('P', 2, int)
#define	SOUND_PCM_READ_RATE		_IOR ('P', 2, int)
#define	SNDCTL_DSP_STEREO		_IOWR('P', 3, int)
#define	SNDCTL_DSP_GETBLKSIZE		_IOWR('P', 4, int)
#define	SNDCTL_DSP_SETFMT		_IOWR('P', 5, int)
#define	 AFMT_QUERY			0x00000000
#define	 AFMT_MU_LAW			0x00000001
#define	 AFMT_A_LAW			0x00000002
#define	 AFMT_IMA_ADPCM			0x00000004
#define	 AFMT_U8			0x00000008
#define	 AFMT_S16_LE			0x00000010
#define	 AFMT_S16_BE			0x00000020
#define	 AFMT_S8			0x00000040
#define	 AFMT_U16_LE			0x00000080
#define	 AFMT_U16_BE			0x00000100
#define	 AFMT_MPEG			0x00000200
#define	 AFMT_AC3			0x00000400
#define	 AFMT_S24_LE			0x00000800
#define	 AFMT_S24_BE			0x00001000
#define	 AFMT_S32_LE			0x00002000
#define	 AFMT_S32_BE			0x00004000
#define SNDCTL_DSP_SAMPLESIZE		SNDCTL_DSP_SETFMT
#define	SOUND_PCM_READ_BITS		_IOR ('P', 5, int)
#define	SNDCTL_DSP_CHANNELS		_IOWR('P', 6, int)
#define SOUND_PCM_WRITE_CHANNELS	SNDCTL_DSP_CHANNELS
#define	SOUND_PCM_READ_CHANNELS		_IOR ('P', 6, int)
#define SOUND_PCM_WRITE_FILTER		_IOWR('P', 7, int)
#define SOUND_PCM_READ_FILTER		_IOR ('P', 7, int)
#define	SNDCTL_DSP_POST			_IO  ('P', 8)
#define SNDCTL_DSP_SUBDIVIDE		_IOWR('P', 9, int)
#define	SNDCTL_DSP_SETFRAGMENT		_IOWR('P', 10, int)
#define	SNDCTL_DSP_GETFMTS		_IOR ('P', 11, int)
#define SNDCTL_DSP_GETOSPACE		_IOR ('P',12, struct audio_buf_info)
#define SNDCTL_DSP_GETISPACE		_IOR ('P',13, struct audio_buf_info)
#define SNDCTL_DSP_NONBLOCK		_IO  ('P',14)
#define SNDCTL_DSP_GETCAPS		_IOR ('P',15, int)
# define DSP_CAP_REVISION		0x000000ff
# define DSP_CAP_DUPLEX			0x00000100
# define DSP_CAP_REALTIME		0x00000200
# define DSP_CAP_BATCH			0x00000400
# define DSP_CAP_COPROC			0x00000800
# define DSP_CAP_TRIGGER		0x00001000
# define DSP_CAP_MMAP			0x00002000
# define PCM_CAP_INPUT			0x00004000
# define PCM_CAP_OUTPUT			0x00008000
# define PCM_CAP_MODEM			0x00010000
# define PCM_CAP_HIDDEN			0x00020000
#define SNDCTL_DSP_GETTRIGGER		_IOR ('P', 16, int)
#define SNDCTL_DSP_SETTRIGGER		_IOW ('P', 16, int)
# define PCM_ENABLE_INPUT		0x00000001
# define PCM_ENABLE_OUTPUT		0x00000002
#define SNDCTL_DSP_GETIPTR		_IOR ('P', 17, struct count_info)
#define SNDCTL_DSP_GETOPTR		_IOR ('P', 18, struct count_info)
#define SNDCTL_DSP_MAPINBUF		_IOR ('P', 19, struct buffmem_desc)
#define SNDCTL_DSP_MAPOUTBUF		_IOR ('P', 20, struct buffmem_desc)
#define SNDCTL_DSP_SETSYNCRO		_IO  ('P', 21)
#define SNDCTL_DSP_SETDUPLEX		_IO  ('P', 22)
#define SNDCTL_DSP_PROFILE		_IOW ('P', 23, int)
#define SNDCTL_DSP_GETODELAY		_IOR ('P', 23, int)
#define	  APF_NORMAL			0
#define	  APF_NETWORK			1
#define   APF_CPUINTENS			2

/* Need native 16 bit format which depends on byte order */
#include <machine/endian_machdep.h>
#if _BYTE_ORDER == _LITTLE_ENDIAN
#define  AFMT_S16_NE AFMT_S16_LE
#define  AFMT_S16_OE AFMT_S16_BE
#define  AFMT_S24_NE AFMT_S24_LE
#define  AFMT_S24_OE AFMT_S24_BE
#define  AFMT_S32_NE AFMT_S32_LE
#define  AFMT_S32_OE AFMT_S32_BE
#else
#define  AFMT_S16_NE AFMT_S16_BE
#define  AFMT_S16_OE AFMT_S16_LE
#define  AFMT_S24_NE AFMT_S24_BE
#define  AFMT_S24_OE AFMT_S24_LE
#define  AFMT_S32_NE AFMT_S32_BE
#define  AFMT_S32_OE AFMT_S32_LE
#endif

/* Aliases */
#define SOUND_PCM_WRITE_BITS		SNDCTL_DSP_SETFMT
#define SOUND_PCM_WRITE_RATE		SNDCTL_DSP_SPEED
#define SOUND_PCM_POST			SNDCTL_DSP_POST
#define SOUND_PCM_RESET			SNDCTL_DSP_RESET
#define SOUND_PCM_SYNC			SNDCTL_DSP_SYNC
#define SOUND_PCM_SUBDIVIDE		SNDCTL_DSP_SUBDIVIDE
#define SOUND_PCM_SETFRAGMENT		SNDCTL_DSP_SETFRAGMENT
#define SOUND_PCM_GETFMTS		SNDCTL_DSP_GETFMTS
#define SOUND_PCM_SETFMT		SNDCTL_DSP_SETFMT
#define SOUND_PCM_GETOSPACE		SNDCTL_DSP_GETOSPACE
#define SOUND_PCM_GETISPACE		SNDCTL_DSP_GETISPACE
#define SOUND_PCM_NONBLOCK		SNDCTL_DSP_NONBLOCK
#define SOUND_PCM_GETCAPS		SNDCTL_DSP_GETCAPS
#define SOUND_PCM_GETTRIGGER		SNDCTL_DSP_GETTRIGGER
#define SOUND_PCM_SETTRIGGER		SNDCTL_DSP_SETTRIGGER
#define SOUND_PCM_SETSYNCRO		SNDCTL_DSP_SETSYNCRO
#define SOUND_PCM_GETIPTR		SNDCTL_DSP_GETIPTR
#define SOUND_PCM_GETOPTR		SNDCTL_DSP_GETOPTR
#define SOUND_PCM_MAPINBUF		SNDCTL_DSP_MAPINBUF
#define SOUND_PCM_MAPOUTBUF		SNDCTL_DSP_MAPOUTBUF

/* Mixer defines */
#define SOUND_MIXER_FIRST		0
#define SOUND_MIXER_NRDEVICES		25

#define SOUND_MIXER_VOLUME		0
#define SOUND_MIXER_BASS		1
#define SOUND_MIXER_TREBLE		2
#define SOUND_MIXER_SYNTH		3
#define SOUND_MIXER_PCM			4
#define SOUND_MIXER_SPEAKER		5
#define SOUND_MIXER_LINE		6
#define SOUND_MIXER_MIC			7
#define SOUND_MIXER_CD			8
#define SOUND_MIXER_IMIX		9
#define SOUND_MIXER_ALTPCM		10
#define SOUND_MIXER_RECLEV		11
#define SOUND_MIXER_IGAIN		12
#define SOUND_MIXER_OGAIN		13
#define SOUND_MIXER_LINE1		14
#define SOUND_MIXER_LINE2		15
#define SOUND_MIXER_LINE3		16
#define SOUND_MIXER_DIGITAL1		17
#define SOUND_MIXER_DIGITAL2		18
#define SOUND_MIXER_DIGITAL3		19
#define SOUND_MIXER_PHONEIN		20
#define SOUND_MIXER_PHONEOUT		21
#define SOUND_MIXER_VIDEO		22
#define SOUND_MIXER_RADIO		23
#define SOUND_MIXER_MONITOR		24

#define SOUND_ONOFF_MIN			28
#define SOUND_ONOFF_MAX			30

#define SOUND_MIXER_NONE		31

#define SOUND_DEVICE_LABELS	{"Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
				 "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
				 "Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
				 "PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}

#define SOUND_DEVICE_NAMES	{"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
				 "mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
				 "line1", "line2", "line3", "dig1", "dig2", "dig3", \
				 "phin", "phout", "video", "radio", "monitor"}

#define SOUND_MIXER_RECSRC		0xff
#define SOUND_MIXER_DEVMASK		0xfe
#define SOUND_MIXER_RECMASK		0xfd
#define SOUND_MIXER_CAPS		0xfc
#define  SOUND_CAP_EXCL_INPUT		1
#define SOUND_MIXER_STEREODEVS		0xfb

#define MIXER_READ(dev)			_IOR('M', dev, int)

#define SOUND_MIXER_READ_RECSRC		MIXER_READ(SOUND_MIXER_RECSRC)
#define SOUND_MIXER_READ_DEVMASK	MIXER_READ(SOUND_MIXER_DEVMASK)
#define SOUND_MIXER_READ_RECMASK	MIXER_READ(SOUND_MIXER_RECMASK)
#define SOUND_MIXER_READ_STEREODEVS	MIXER_READ(SOUND_MIXER_STEREODEVS)
#define SOUND_MIXER_READ_CAPS		MIXER_READ(SOUND_MIXER_CAPS)

#define SOUND_MIXER_READ_VOLUME		MIXER_READ(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_READ_BASS		MIXER_READ(SOUND_MIXER_BASS)
#define SOUND_MIXER_READ_TREBLE		MIXER_READ(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_READ_SYNTH		MIXER_READ(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_READ_PCM		MIXER_READ(SOUND_MIXER_PCM)
#define SOUND_MIXER_READ_SPEAKER	MIXER_READ(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_READ_LINE		MIXER_READ(SOUND_MIXER_LINE)
#define SOUND_MIXER_READ_MIC		MIXER_READ(SOUND_MIXER_MIC)
#define SOUND_MIXER_READ_CD		MIXER_READ(SOUND_MIXER_CD)
#define SOUND_MIXER_READ_IMIX		MIXER_READ(SOUND_MIXER_IMIX)
#define SOUND_MIXER_READ_ALTPCM		MIXER_READ(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_READ_RECLEV		MIXER_READ(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_READ_IGAIN		MIXER_READ(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_READ_OGAIN		MIXER_READ(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_READ_LINE1		MIXER_READ(SOUND_MIXER_LINE1)
#define SOUND_MIXER_READ_LINE2		MIXER_READ(SOUND_MIXER_LINE2)
#define SOUND_MIXER_READ_LINE3		MIXER_READ(SOUND_MIXER_LINE3)

#define MIXER_WRITE(dev)		_IOW ('M', dev, int)
#define MIXER_WRITE_R(dev)		_IOWR('M', dev, int)

#define SOUND_MIXER_WRITE_RECSRC	MIXER_WRITE(SOUND_MIXER_RECSRC)
#define SOUND_MIXER_WRITE_R_RECSRC	MIXER_WRITE_R(SOUND_MIXER_RECSRC)

#define SOUND_MIXER_WRITE_VOLUME	MIXER_WRITE(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_WRITE_BASS		MIXER_WRITE(SOUND_MIXER_BASS)
#define SOUND_MIXER_WRITE_TREBLE	MIXER_WRITE(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_WRITE_SYNTH		MIXER_WRITE(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_WRITE_PCM		MIXER_WRITE(SOUND_MIXER_PCM)
#define SOUND_MIXER_WRITE_SPEAKER	MIXER_WRITE(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_WRITE_LINE		MIXER_WRITE(SOUND_MIXER_LINE)
#define SOUND_MIXER_WRITE_MIC		MIXER_WRITE(SOUND_MIXER_MIC)
#define SOUND_MIXER_WRITE_CD		MIXER_WRITE(SOUND_MIXER_CD)
#define SOUND_MIXER_WRITE_IMIX		MIXER_WRITE(SOUND_MIXER_IMIX)
#define SOUND_MIXER_WRITE_ALTPCM	MIXER_WRITE(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_WRITE_RECLEV	MIXER_WRITE(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_WRITE_IGAIN		MIXER_WRITE(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_WRITE_OGAIN		MIXER_WRITE(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_WRITE_LINE1		MIXER_WRITE(SOUND_MIXER_LINE1)
#define SOUND_MIXER_WRITE_LINE2		MIXER_WRITE(SOUND_MIXER_LINE2)
#define SOUND_MIXER_WRITE_LINE3		MIXER_WRITE(SOUND_MIXER_LINE3)

#define SOUND_MASK_VOLUME	(1 << SOUND_MIXER_VOLUME)
#define SOUND_MASK_BASS		(1 << SOUND_MIXER_BASS)
#define SOUND_MASK_TREBLE	(1 << SOUND_MIXER_TREBLE)
#define SOUND_MASK_SYNTH	(1 << SOUND_MIXER_SYNTH)
#define SOUND_MASK_PCM		(1 << SOUND_MIXER_PCM)
#define SOUND_MASK_SPEAKER	(1 << SOUND_MIXER_SPEAKER)
#define SOUND_MASK_LINE		(1 << SOUND_MIXER_LINE)
#define SOUND_MASK_MIC		(1 << SOUND_MIXER_MIC)
#define SOUND_MASK_CD		(1 << SOUND_MIXER_CD)
#define SOUND_MASK_IMIX		(1 << SOUND_MIXER_IMIX)
#define SOUND_MASK_ALTPCM	(1 << SOUND_MIXER_ALTPCM)
#define SOUND_MASK_RECLEV	(1 << SOUND_MIXER_RECLEV)
#define SOUND_MASK_IGAIN	(1 << SOUND_MIXER_IGAIN)
#define SOUND_MASK_OGAIN	(1 << SOUND_MIXER_OGAIN)
#define SOUND_MASK_LINE1	(1 << SOUND_MIXER_LINE1)
#define SOUND_MASK_LINE2	(1 << SOUND_MIXER_LINE2)
#define SOUND_MASK_LINE3	(1 << SOUND_MIXER_LINE3)
#define SOUND_MASK_DIGITAL1	(1 << SOUND_MIXER_DIGITAL1)
#define SOUND_MASK_DIGITAL2	(1 << SOUND_MIXER_DIGITAL2)
#define SOUND_MASK_DIGITAL3	(1 << SOUND_MIXER_DIGITAL3)
#define SOUND_MASK_PHONEIN	(1 << SOUND_MIXER_PHONEIN)
#define SOUND_MASK_PHONEOUT	(1 << SOUND_MIXER_PHONEOUT)
#define SOUND_MASK_VIDEO	(1 << SOUND_MIXER_VIDEO)
#define SOUND_MASK_RADIO	(1 << SOUND_MIXER_RADIO)
#define SOUND_MASK_MONITOR	(1 << SOUND_MIXER_MONITOR)

typedef struct mixer_info {
	char id[16];
	char name[32];
	int  modify_counter;
	int  fillers[10];
} mixer_info;

typedef struct _old_mixer_info {
	char id[16];
	char name[32];
} _old_mixer_info;

#define SOUND_MIXER_INFO		_IOR('M', 101, mixer_info)
#define SOUND_OLD_MIXER_INFO		_IOR('M', 101, _old_mixer_info)

#define OSS_GETVERSION			_IOR ('M', 118, int)

typedef struct audio_buf_info {
	int fragments;
	int fragstotal;
	int fragsize;
	int bytes;
} audio_buf_info;

typedef struct count_info {
	int bytes;
	int blocks;
	int ptr;
} count_info;

typedef struct buffmem_desc {
	unsigned int *buffer;
	int size;
} buffmem_desc;

/* Some OSSv4 calls. */

#define OSS_DEVNODE_SIZE		32
#define OSS_LABEL_SIZE			16
#define OSS_LONGNAME_SIZE		64
#define OSS_MAX_AUDIO_DEVS		64

#define SNDCTL_SYSINFO			_IOR ('P',24, struct oss_sysinfo)
#define SNDCTL_AUDIOINFO		_IOWR ('P',25, struct oss_audioinfo)
#define SNDCTL_ENGINEINFO		_IOWR ('P',26, struct oss_audioinfo)
#define SNDCTL_DSP_GETPLAYVOL		_IOR ('P',27, uint)
#define SNDCTL_DSP_SETPLAYVOL		_IOW ('P',28, uint)
#define SNDCTL_DSP_GETRECVOL		_IOR ('P',29, uint)
#define SNDCTL_DSP_SETRECVOL		_IOW ('P',30, uint)
#define SNDCTL_DSP_SKIP			_IO ('P',31)
#define SNDCTL_DSP_SILENCE		_IO ('P',32)

typedef struct oss_sysinfo {
	char product[32];
	char version[32];
	int versionnum;
	char options[128];		/* Future use */
	int numaudios;
	int openedaudio[8];		/* Obsolete */
	int numsynths;			/* Obsolete */
	int nummidis;
	int numtimers;
	int nummixers;
	int openedmidi[8];
	int numcards;
	int numaudioengines;
	char license[16];
	char revision_info[256];	/* Internal Use */
	int filler[172];		/* For expansion */
} oss_sysinfo;

typedef struct oss_audioinfo {
	int dev;		/* Set by caller */
	char name[OSS_LONGNAME_SIZE];
	int busy;
	int pid;
	int caps;
	int iformats;
	int oformats;
	int magic;		/* Unused */
	char cmd[OSS_LONGNAME_SIZE];
	int card_number;
	int port_number;
	int mixer_dev;
	int legacy_device;	/* Obsolete */
	int enabled;
	int flags;		/* Reserved */
	int min_rate;
	int max_rate;
	int min_channels;
	int max_channels;
	int binding;		/* Reserved */
	int rate_source;
	char handle[32];
#define OSS_MAX_SAMPLE_RATES	20
	int nrates;
	int rates[OSS_MAX_SAMPLE_RATES];
	char song_name[OSS_LONGNAME_SIZE];
	char label[OSS_LABEL_SIZE];
	int latency;				/* In usecs -1 = unknown */
	char devnode[OSS_DEVNODE_SIZE];	
	int next_play_engine;
	int next_rec_engine;
	int filler[184];			/* For expansion */
} oss_audioinfo;

#define ioctl _oss_ioctl
/*
 * If we already included <sys/ioctl.h>, then we define our own prototype,
 * else we depend on <sys/ioctl.h> to do it for us. We do it this way, so
 * that we don't define the prototype twice.
 */
#ifndef _SYS_IOCTL_H_
#include <sys/ioctl.h>
#else
__BEGIN_DECLS
int _oss_ioctl(int, unsigned long, ...);
__END_DECLS
#endif

#endif /* !_SOUNDCARD_H_ */