text: #ifndef SOUNDCARD_H
  #define SOUNDCARD_H
  /*
   * Copyright by Hannu Savolainen 1993
   *
   * 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 AUTHOR 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 AUTHOR 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.
   *
   * 
   */
  
   /* 
    * If you make modifications to this file, please contact me before
    * distributing the modified version. There is already enough 
    * divercity in the world.
    *
    * Regards,
    * Hannu Savolainen
    * hsavolai@cs.helsinki.fi
    */
  
  #define SOUND_VERSION	203
  #define VOXWARE
  
  #include <sys/ioctl.h>
  
  /*
   *	Supported card ID numbers (Should be somewhere else?)
   */
  
  #define SNDCARD_ADLIB	1
  #define SNDCARD_SB	2
  #define SNDCARD_PAS	3
  #define SNDCARD_GUS	4
  #define SNDCARD_MPU401	5
  #define SNDCARD_SB16	6
  #define SNDCARD_SB16MIDI 7
  
  /***********************************
   * IOCTL Commands for /dev/sequencer
   */
  
  #ifndef _IOWR
  /*	@(#)ioctlp.h */
  
  /* Ioctl's have the command encoded in the lower word,
   * and the size of any in or out parameters in the upper
   * word.  The high 2 bits of the upper word are used
   * to encode the in/out status of the parameter; for now
   * we restrict parameters to at most 128 bytes.
   */
  /* #define	IOCTYPE		(0xff<<8) */
  #define	IOCPARM_MASK	0x7f		/* parameters must be < 128 bytes */
  #define	IOC_VOID	0x00000000	/* no parameters */
  #define	IOC_OUT		0x20000000	/* copy out parameters */
  #define	IOC_IN		0x40000000	/* copy in parameters */
  #define	IOC_INOUT	(IOC_IN|IOC_OUT)
  /* the 0x20000000 is so we can distinguish new ioctl's from old */
  #define	_IO(x,y)	((int)(IOC_VOID|(x<<8)|y))
  #define	_IOR(x,y,t)	((int)(IOC_OUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
  #define	_IOW(x,y,t)	((int)(IOC_IN|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
  /* this should be _IORW, but stdio got there first */
  #define	_IOWR(x,y,t)	((int)(IOC_INOUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y))
  #endif  /* !_IOWR */
  
  #define SNDCTL_SEQ_RESET		_IO  ('Q', 0)
  #define SNDCTL_SEQ_SYNC			_IO  ('Q', 1)
  #define SNDCTL_SYNTH_INFO		_IOWR('Q', 2, struct synth_info)
  #define SNDCTL_SEQ_CTRLRATE		_IOWR('Q', 3, int)	/* Set/get timer resolution (HZ) */
  #define SNDCTL_SEQ_GETOUTCOUNT		_IOR ('Q', 4, int)
  #define SNDCTL_SEQ_GETINCOUNT		_IOR ('Q', 5, int)
  #define SNDCTL_SEQ_PERCMODE		_IOW ('Q', 6, int)
  #define SNDCTL_FM_LOAD_INSTR		_IOW ('Q', 7, struct sbi_instrument)	/* Valid for FM only */
  #define SNDCTL_SEQ_TESTMIDI		_IOW ('Q', 8, int)
  #define SNDCTL_SEQ_RESETSAMPLES		_IOW ('Q', 9, int)
  #define SNDCTL_SEQ_NRSYNTHS		_IOR ('Q',10, int)
  #define SNDCTL_SEQ_NRMIDIS		_IOR ('Q',11, int)
  #define SNDCTL_MIDI_INFO		_IOWR('Q',12, struct midi_info)
  #define SNDCTL_SEQ_TRESHOLD		_IOW ('Q',13, int)
  #define SNDCTL_SYNTH_MEMAVL		_IOWR('Q',14, int)	/* in=dev#, out=memsize */
  #define SNDCTL_FM_4OP_ENABLE		_IOW ('Q',15, int)	/* in=dev# */
  #define SNDCTL_PMGR_ACCESS		_IOWR('Q',16, struct patmgr_info)
  
  /*
   *	Sample loading mechanism for internal synthesizers (/dev/sequencer)
   *	The following patch_info structure has been designed to support
   *	Gravis UltraSound. It tries to be universal format for uploading
   *	sample based patches but is propably too limited.
   */
  
  struct patch_info {
  		short key;		/* Use GUS_PATCH here */
  #define GUS_PATCH	0x04fd
  #define OBSOLETE_GUS_PATCH	0x02fd
  		short device_no;	/* Synthesizer number */
  		short instr_no;		/* Midi pgm# */
  
  		unsigned long mode;
  /*
   * The least significant byte has the same format than the GUS .PAT
   * files
   */
  #define WAVE_16_BITS	0x01	/* bit 0 = 8 or 16 bit wave data. */
  #define WAVE_UNSIGNED	0x02	/* bit 1 = Signed - Unsigned data. */
  #define WAVE_LOOPING	0x04	/* bit 2 = looping enabled-1. */
  #define WAVE_BIDIR_LOOP	0x08	/* bit 3 = Set is bidirectional looping. */
  #define WAVE_LOOP_BACK	0x10	/* bit 4 = Set is looping backward. */
  #define WAVE_SUSTAIN_ON	0x20	/* bit 5 = Turn sustaining on. (Env. pts. 3)*/
  #define WAVE_ENVELOPES	0x40	/* bit 6 = Enable envelopes - 1 */
  				/* 	(use the env_rate/env_offs fields). */
  /* Linux specific bits */
  #define WAVE_VIBRATO	0x00010000	/* The vibrato info is valid */
  #define WAVE_TREMOLO	0x00020000	/* The tremolo info is valid */
  #define WAVE_SCALE	0x00040000	/* The scaling info is valid */
  /* Other bits must be zeroed */
  
  		long len;	/* Size of the wave data in bytes */
  		long loop_start, loop_end; /* Byte offsets from the beginning */
  
  /* 
   * The base_freq and base_note fields are used when computing the
   * playback speed for a note. The base_note defines the tone frequency
   * which is heard if the sample is played using the base_freq as the
   * playback speed.
   *
   * The low_note and high_note fields define the minimum and maximum note
   * frequencies for which this sample is valid. It is possible to define
   * more than one samples for a instrument number at the same time. The
   * low_note and high_note fields are used to select the most suitable one.
   *
   * The fields base_note, high_note and low_note should contain
   * the note frequency multiplied by 1000. For example value for the
   * middle A is 440*1000.
   */
  
  		unsigned int base_freq;
  		unsigned long base_note;
  		unsigned long high_note;
  		unsigned long low_note;
  		int panning;	/* -128=left, 127=right */
  		int detuning;
  
  /*	New fields introduced in version 1.99.5	*/
  
         /* Envelope. Enabled by mode bit WAVE_ENVELOPES	*/
  		unsigned char	env_rate[ 6 ];	 /* GUS HW ramping rate */
  		unsigned char	env_offset[ 6 ]; /* 255 == 100% */
  
  	/* 
  	 * The tremolo, vibrato and scale info are not supported yet.
  	 * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
  	 * WAVE_SCALE
  	 */
  
  		unsigned char	tremolo_sweep;
  		unsigned char	tremolo_rate;
  		unsigned char	tremolo_depth;
  	
  		unsigned char	vibrato_sweep;
  		unsigned char	vibrato_rate;
  		unsigned char	vibrato_depth;
  
  		int		scale_frequency;
  		unsigned int	scale_factor;		/* from 0 to 2048 or 0 to 2 */
  	
  	        int		volume;
  	        int		spare[4];
  		char data[1];	/* The waveform data starts here */
  	};
  
  
  /*
   * Patch management interface (/dev/sequencer, /dev/patmgr#)
   * Don't use these calls if you want to maintain compatibility with
   * the future versions of the driver.
   */
  
  #define 	PS_NO_PATCHES		0	/* No patch support on device */
  #define		PS_MGR_NOT_OK		1	/* Plain patch support (no mgr) */
  #define		PS_MGR_OK		2	/* Patch manager supported */
  #define		PS_MANAGED		3	/* Patch manager running */
  
  #define SNDCTL_PMGR_IFACE		_IOWR('P', 1, struct patmgr_info)
  
  /*
   * The patmgr_info is a fixed size structure which is used for two
   * different purposes. The intended use is for communication between
   * the application using /dev/sequencer and the patch manager daemon
   * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
   *
   * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
   * a patch manager daemon to read and write device parameters. This
   * ioctl available through /dev/sequencer also. Avoid using it since it's
   * extremely hardware dependent. In addition access trough /dev/sequencer 
   * may confuse the patch manager daemon.
   */
  
  struct patmgr_info {	/* Note! size must be < 4k since kmalloc() is used */
  	  unsigned long key;	/* Don't worry. Reserved for communication
  	  			   between the patch manager and the driver. */
  #define PM_K_EVENT		1 /* Event from the /dev/sequencer driver */
  #define PM_K_COMMAND		2 /* Request from a application */
  #define PM_K_RESPONSE		3 /* From patmgr to application */
  #define PM_ERROR		4 /* Error returned by the patmgr */
  	  int device;
  	  int command;
  
  /* 
   * Commands 0x000 to 0xfff reserved for patch manager programs 
   */
  #define PM_GET_DEVTYPE	1	/* Returns type of the patch mgr interface of dev */
  #define		PMTYPE_FM2	1	/* 2 OP fm */
  #define		PMTYPE_FM4	2	/* Mixed 4 or 2 op FM (OPL-3) */
  #define		PMTYPE_WAVE	3	/* Wave table synthesizer (GUS) */
  #define PM_GET_NRPGM	2	/* Returns max # of midi programs in parm1 */
  #define PM_GET_PGMMAP	3	/* Returns map of loaded midi programs in data8 */
  #define PM_GET_PGM_PATCHES 4	/* Return list of patches of a program (parm1) */
  #define PM_GET_PATCH	5	/* Return patch header of patch parm1 */
  #define PM_SET_PATCH	6	/* Set patch header of patch parm1 */
  #define PM_READ_PATCH	7	/* Read patch (wave) data */
  #define PM_WRITE_PATCH	8	/* Write patch (wave) data */
  
  /*
   * Commands 0x1000 to 0xffff are for communication between the patch manager
   * and the client
   */
  #define _PM_LOAD_PATCH	0x100
  
  /* 
   * Commands above 0xffff reserved for device specific use
   */
  
  	  long parm1;
  	  long parm2;
  	  long parm3;
  
  	  union {
  		unsigned char data8[4000];
  		unsigned short data16[2000];
  		unsigned long data32[1000];
  		struct patch_info patch;
  	  } data;
  	};
  
  /*
   * When a patch manager daemon is present, it will be informed by the
   * driver when something important happens. For example when the
   * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
   * returned. The command field contains the event type:
   */
  #define PM_E_OPENED		1	/* /dev/sequencer opened */
  #define PM_E_CLOSED		2	/* /dev/sequencer closed */
  #define PM_E_PATCH_RESET	3	/* SNDCTL_RESETSAMPLES called */
  #define PM_E_PATCH_LOADED	4	/* A patch has been loaded by appl */
  
  /*
   * /dev/sequencer input events.
   *
   * The data written to the /dev/sequencer is a stream of events. Events
   * are records of 4 or 8 bytes. The first byte defines the size. 
   * Any number of events can be written with a write call. There
   * is a set of macros for sending these events. Use these macros if you
   * want to maximize portability of your program.
   *
   * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
   * (All input events are currently 4 bytes long. Be prepared to support
   * 8 byte events also. If you receive any event having first byte >= 0xf0,
   * it's a 8 byte event.
   *
   * The events are documented at the end of this file.
   *
   * Normal events (4 bytes)
   * There is also a 8 byte version of most of the 4 byte events. The
   * 8 byte one is recommended.
   */
  #define SEQ_NOTEOFF		0
  #define SEQ_FMNOTEOFF		SEQ_NOTEOFF	/* Just old name */
  #define SEQ_NOTEON		1
  #define	SEQ_FMNOTEON		SEQ_NOTEON
  #define SEQ_WAIT		2
  #define SEQ_PGMCHANGE		3
  #define SEQ_FMPGMCHANGE		SEQ_PGMCHANGE
  #define SEQ_SYNCTIMER		4
  #define SEQ_MIDIPUTC		5
  #define SEQ_DRUMON		6	/*** OBSOLETE ***/
  #define SEQ_DRUMOFF		7	/*** OBSOLETE ***/
  #define SEQ_ECHO		8	/* For synching programs with output */
  #define SEQ_AFTERTOUCH		9
  #define SEQ_CONTROLLER		10
  #define    CTRL_PITCH_BENDER		255
  #define    CTRL_PITCH_BENDER_RANGE	254
  #define    CTRL_EXPRESSION		253
  #define    CTRL_MAIN_VOLUME		252
  #define SEQ_BALANCE		11
  
  /*
   * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
   *	 input events.
   */
  
  /*
   * Event codes 0xf0 to 0xfc are reserved for future extensions.
   */
  
  #define SEQ_FULLSIZE		0xfd	/* Long events */
  /*
   *	SEQ_FULLSIZE events are used for loading patches/samples to the
   *	synthesizer devices. These events are passed directly to the driver
   *	of the associated synthesizer device. There is no limit to the size
   *	of the extended events. These events are not queued but executed
   *	immediately when the write() is called (execution can take several
   *	seconds of time). 
   *
   *	When a SEQ_FULLSIZE message is written to the device, it must
   *	be written using exactly one write() call. Other events cannot
   *	be mixed to the same write.
   *	
   *	For FM synths (YM3812/OPL3) use struct sbi_instrument and write it to the 
   *	/dev/sequencer. Don't write other data together with the instrument structure
   *	Set the key field of the structure to FM_PATCH. The device field is used to
   *	route the patch to the corresponding device.
   *
   *	For Gravis UltraSound use struct patch_info. Initialize the key field
   *      to GUS_PATCH.
   */
  #define SEQ_PRIVATE		0xfe	/* Low level HW dependent events (8 bytes) */
  #define SEQ_EXTENDED		0xff	/* Extended events (8 bytes) */
  
  /*
   *	Extended events for synthesizers (8 bytes)
   *
   *	Format:
   *
   *		b0	= SEQ_EXTENDED
   *		b1	= command
   *		b2	= device
   *		b3-b7	= parameters
   *
   *	Command				b3	b4	b5	b6	b7
   *	----------------------------------------------------------------------------
   *	SEQ_NOTEON			voice	note	volume	0	0
   *	SEQ_NOTEOFF			voice	note	volume	0	0
   *	SEQ_PGMCHANGE			voice	pgm	0	0	0
   *	SEQ_DRUMON			(voice)	drum#	volume	0	0
   *	SEQ_DRUMOFF			(voice)	drum#	volume	0	0
   */
  
  /*
   * Record for FM patches
   */
  
  typedef unsigned char sbi_instr_data[32];
  
  struct sbi_instrument {
  		unsigned short	key;		/* 	Initialize to FM_PATCH or OPL3_PATCH */
  #define FM_PATCH	0x01fd
  #define OPL3_PATCH	0x03fd
  		short		device;		/*	Synth# (0-4)	*/
  		int 		channel;	/*	Program# to be initialized 	*/
  		sbi_instr_data	operators;	/*	Register settings for operator cells (.SBI format)	*/
  	};
  
  struct synth_info {	/* Read only */
  		char	name[30];
  		int	device;		/* 0-N. INITIALIZE BEFORE CALLING */
  		int	synth_type;
  #define SYNTH_TYPE_FM			0
  #define SYNTH_TYPE_SAMPLE		1
  
  		int	synth_subtype;
  #define FM_TYPE_ADLIB			0x00
  #define FM_TYPE_OPL3			0x01
  
  #define SAMPLE_TYPE_GUS			0x10
  
  		int	perc_mode;	/* No longer supported */
  		int	nr_voices;
  		int	nr_drums;	/* Obsolete field */
  		int	instr_bank_size;
  		unsigned long	capabilities;	
  #define SYNTH_CAP_PERCMODE		0x00000001 /* No longer used */
  #define SYNTH_CAP_OPL3			0x00000002 /* Set if OPL3 supported */
  		int	dummies[19];	/* Reserve space */
  	};
  
  struct midi_info {
  		char		name[30];
  		int		device;		/* 0-N. INITIALIZE BEFORE CALLING */
  		unsigned long	capabilities;	/* To be defined later */
  		int		dev_type;
  		int		dummies[18];	/* Reserve space */
  	};
  
  /********************************************
   * IOCTL commands for /dev/dsp and /dev/audio
   */
  
  #define SNDCTL_DSP_RESET		_IO  ('P', 0)
  #define SNDCTL_DSP_SYNC			_IO  ('P', 1)
  #define SNDCTL_DSP_SPEED		_IOWR('P', 2, int)
  #define SNDCTL_DSP_STEREO		_IOWR('P', 3, int)
  #define SNDCTL_DSP_GETBLKSIZE		_IOWR('P', 4, int)
  #define SNDCTL_DSP_SAMPLESIZE		_IOWR('P', 5, int)	/* 8, 12 or 16 */
  #define SOUND_PCM_WRITE_CHANNELS	_IOWR('P', 6, int)
  #define SOUND_PCM_WRITE_FILTER		_IOWR('P', 7, int)
  #define SNDCTL_DSP_POST			_IO  ('P', 8)
  #define SNDCTL_DSP_SUBDIVIDE		_IOWR('P', 9, int)
  
  #define SOUND_PCM_READ_RATE		_IOR ('P', 2, int)
  #define SOUND_PCM_READ_CHANNELS		_IOR ('P', 6, int)
  #define SOUND_PCM_READ_BITS		_IOR ('P', 5, int)
  #define SOUND_PCM_READ_FILTER		_IOR ('P', 7, int)
  
  /* Some alias names */
  #define SOUND_PCM_WRITE_BITS		SNDCTL_DSP_SAMPLESIZE
  #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
  
  /*********************************************
   * IOCTL commands for /dev/mixer
   */
  	
  /* 
   * Mixer devices
   *
   * There can be up to 20 different analog mixer channels. The
   * SOUND_MIXER_NRDEVICES gives the currently supported maximum. 
   * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
   * the devices supported by the particular mixer.
   */
  
  #define SOUND_MIXER_NRDEVICES	12
  #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	/*  Recording monitor  */
  #define SOUND_MIXER_ALTPCM	10
  #define SOUND_MIXER_RECLEV	11	/* Recording level */
  
  /* Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX) */
  /* Not counted to SOUND_MIXER_NRDEVICES, but use the same number space */
  #define SOUND_ONOFF_MIN		28
  #define SOUND_ONOFF_MAX		30
  #define SOUND_MIXER_MUTE	28	/* 0 or 1 */
  #define SOUND_MIXER_ENHANCE	29	/* Enhanced stereo (0, 40, 60 or 80) */
  #define SOUND_MIXER_LOUD	30	/* 0 or 1 */
  
  /* Note!	Number 31 cannot be used since the sign bit is reserved */
  
  #define SOUND_DEVICE_LABELS	{"Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
  				 "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "rec"}
  
  #define SOUND_DEVICE_NAMES	{"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
  				 "mic", "cd", "mix", "pcm2", "rec"}
  
  /*	Device bitmask identifiers	*/
  
  #define SOUND_MIXER_RECSRC	0xff	/* Arg contains a bit for each recording source */
  #define SOUND_MIXER_DEVMASK	0xfe	/* Arg contains a bit for each supported device */
  #define SOUND_MIXER_RECMASK	0xfd	/* Arg contains a bit for each supported recording source */
  #define SOUND_MIXER_CAPS	0xfc
  	#define SOUND_CAP_EXCL_INPUT	0x00000001	/* Only one recording source at a time */
  #define SOUND_MIXER_STEREODEVS	0xfb	/* Mixer channels supporting stereo */
  
  /*	Device mask bits	*/
  
  #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_MUTE		(1 << SOUND_MIXER_MUTE)
  #define SOUND_MASK_ENHANCE	(1 << SOUND_MIXER_ENHANCE)
  #define SOUND_MASK_LOUD		(1 << SOUND_MIXER_LOUD)
  
  #define MIXER_READ(dev)		_IOR('M', dev, int)
  #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_MUTE		MIXER_READ(SOUND_MIXER_MUTE)
  #define SOUND_MIXER_READ_ENHANCE	MIXER_READ(SOUND_MIXER_ENHANCE)
  #define SOUND_MIXER_READ_LOUD		MIXER_READ(SOUND_MIXER_LOUD)
  
  #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 MIXER_WRITE(dev)		_IOWR('M', dev, int)
  #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_MUTE		MIXER_WRITE(SOUND_MIXER_MUTE)
  #define SOUND_MIXER_WRITE_ENHANCE	MIXER_WRITE(SOUND_MIXER_ENHANCE)
  #define SOUND_MIXER_WRITE_LOUD		MIXER_WRITE(SOUND_MIXER_LOUD)
  
  #define SOUND_MIXER_WRITE_RECSRC	MIXER_WRITE(SOUND_MIXER_RECSRC)
  
  /*
   *	The following mixer ioctl calls are compatible with the BSD driver by
   *	  Steve Haehnichen <shaehnic@ucsd.edu>
   *
   * Since this interface is entirely SB specific, it will be dropped in the
   * near future.
   */
  
  typedef unsigned char S_BYTE;
  typedef unsigned char S_FLAG;
  struct stereo_vol
  {
    S_BYTE l;			/* Left volume */
    S_BYTE r;			/* Right volume */
  };
  
  #define MIXER_IOCTL_SET_LEVELS 		_IOW ('s', 20, struct sb_mixer_levels)
  #define MIXER_IOCTL_SET_PARAMS 		_IOW ('s', 21, struct sb_mixer_params)
  #define MIXER_IOCTL_READ_LEVELS 	_IOR ('s', 22, struct sb_mixer_levels)
  #define MIXER_IOCTL_READ_PARAMS 	_IOR ('s', 23, struct sb_mixer_params)
  #define MIXER_IOCTL_RESET		_IO  ('s', 24)
  
  /*
   * Mixer volume levels for MIXER_IOCTL_SET_VOL & MIXER_IOCTL_READ_VOL
   */
  struct sb_mixer_levels
  {
    struct stereo_vol master;	/* Master volume */
    struct stereo_vol voc;	/* DSP Voice volume */
    struct stereo_vol fm;		/* FM volume */
    struct stereo_vol line;	/* Line-in volume */
    struct stereo_vol cd;		/* CD audio */
    S_BYTE mic;			/* Microphone level */
  };
  
  /*
   * Mixer parameters for MIXER_IOCTL_SET_PARAMS & MIXER_IOCTL_READ_PARAMS
   */
  struct sb_mixer_params
  {
    S_BYTE record_source;		/* Recording source (See SRC_xxx below) */
    S_FLAG hifreq_filter;		/* Filter frequency (hi/low) */
    S_FLAG filter_input;		/* ANFI input filter */
    S_FLAG filter_output;		/* DNFI output filter */
    S_FLAG dsp_stereo;		/* 1 if DSP is in Stereo mode */
  };
  
  #define SRC_MIC         1	/* Select Microphone recording source */
  #define SRC_CD          3	/* Select CD recording source */
  #define SRC_LINE        7	/* Use Line-in for recording source */
  
  #if !defined(KERNEL) && !defined(INKERNEL)
  /*
   *	Some convenience macros to simplify programming of the
   *	/dev/sequencer interface
   *
   *	These macros define the API which should be used when possible.
   */
  
  void seqbuf_dump(void);	/* This function must be provided by programs */
  
  /* Sample seqbuf_dump() implementation:
   *
   *	SEQ_DEFINEBUF (2048);	-- Defines a buffer for 2048 bytes
   *
   *	int seqfd;		-- The file descriptor for /dev/sequencer.
   *
   *	void
   *	seqbuf_dump ()
   *	{
   *	  if (_seqbufptr)
   *	    if (write (seqfd, _seqbuf, _seqbufptr) == -1)
   *	      {
   *		perror ("write /dev/sequencer");
   *		exit (-1);
   *	      }
   *	  _seqbufptr = 0;
   *	}
   */
  
  #define SEQ_DEFINEBUF(len)		unsigned char _seqbuf[len]; int _seqbuflen = len, _seqbufptr = 0
  #define SEQ_PM_DEFINES			struct patmgr_info _pm_info
  #define _SEQ_NEEDBUF(len)		if ((_seqbufptr+(len)) > _seqbuflen) seqbuf_dump()
  #define _SEQ_ADVBUF(len)		_seqbufptr += len
  #define SEQ_DUMPBUF			seqbuf_dump
  #define PM_LOAD_PATCH(dev, bank, pgm)	(SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
  					_pm_info.device=dev, _pm_info.data.data8[0]=pgm, \
  					_pm_info.parm1 = bank, _pm_info.parm2 = 1, \
  					ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
  #define PM_LOAD_PATCHES(dev, bank, pgm) (SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
  					_pm_info.device=dev, memcpy(_pm_info.data.data8, pgm, 128), \
  					_pm_info.parm1 = bank, _pm_info.parm2 = 128, \
  					ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
  
  #define SEQ_START_NOTE(dev, voice, note, vol)	{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
  					_seqbuf[_seqbufptr+1] = SEQ_NOTEON;\
  					_seqbuf[_seqbufptr+2] = (dev);\
  					_seqbuf[_seqbufptr+3] = (voice);\
  					_seqbuf[_seqbufptr+4] = (note);\
  					_seqbuf[_seqbufptr+5] = (vol);\
  					_seqbuf[_seqbufptr+6] = 0;\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_STOP_NOTE(dev, voice, note, vol)	{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
  					_seqbuf[_seqbufptr+1] = SEQ_NOTEOFF;\
  					_seqbuf[_seqbufptr+2] = (dev);\
  					_seqbuf[_seqbufptr+3] = (voice);\
  					_seqbuf[_seqbufptr+4] = (note);\
  					_seqbuf[_seqbufptr+5] = (vol);\
  					_seqbuf[_seqbufptr+6] = 0;\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_CHN_PRESSURE(dev, voice, pressure)	{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
  					_seqbuf[_seqbufptr+1] = SEQ_AFTERTOUCH;\
  					_seqbuf[_seqbufptr+2] = (dev);\
  					_seqbuf[_seqbufptr+3] = (voice);\
  					_seqbuf[_seqbufptr+4] = (pressure);\
  					_seqbuf[_seqbufptr+5] = 0;\
  					_seqbuf[_seqbufptr+6] = 0;\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_PANNING(dev, voice, pos)	{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
  					_seqbuf[_seqbufptr+1] = SEQ_BALANCE;\
  					_seqbuf[_seqbufptr+2] = (dev);\
  					_seqbuf[_seqbufptr+3] = (voice);\
  					(char)_seqbuf[_seqbufptr+4] = (pos);\
  					_seqbuf[_seqbufptr+5] = 0;\
  					_seqbuf[_seqbufptr+6] = 0;\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_CONTROL(dev, voice, controller, value)	{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
  					_seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
  					_seqbuf[_seqbufptr+2] = (dev);\
  					_seqbuf[_seqbufptr+3] = (voice);\
  					_seqbuf[_seqbufptr+4] = (controller);\
  					*(short *)&_seqbuf[_seqbufptr+5] = (value);\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_PITCHBEND(dev, voice, value) SEQ_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
  #define SEQ_BENDER_RANGE(dev, voice, value) SEQ_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
  #define SEQ_EXPRESSION(dev, voice, value) SEQ_CONTROL(dev, voice, CTRL_EXPRESSION, value)
  #define SEQ_MAIN_VOLUME(dev, voice, value) SEQ_CONTROL(dev, voice, CTRL_MAIN_VOLUME, value)
  
  #define SEQ_START_TIMER()		{_SEQ_NEEDBUF(4);\
  					_seqbuf[_seqbufptr] = SEQ_SYNCTIMER;\
  					_seqbuf[_seqbufptr+1] = 0;\
  					_seqbuf[_seqbufptr+2] = 0;\
  					_seqbuf[_seqbufptr+3] = 0;\
  					_SEQ_ADVBUF(4);}
  #define SEQ_SET_PATCH(dev, voice, patch)	{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
  					_seqbuf[_seqbufptr+1] = SEQ_PGMCHANGE;\
  					_seqbuf[_seqbufptr+2] = (dev);\
  					_seqbuf[_seqbufptr+3] = (voice);\
  					_seqbuf[_seqbufptr+4] = (patch);\
  					_seqbuf[_seqbufptr+5] = 0;\
  					_seqbuf[_seqbufptr+6] = 0;\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_WAIT_TIME(ticks)		{_SEQ_NEEDBUF(4);\
  				 	*(unsigned long *)&_seqbuf[_seqbufptr] = SEQ_WAIT | ((ticks) << 8);\
  				 	_SEQ_ADVBUF(4);}
  
  #define SEQ_ECHO_BACK(key)		{_SEQ_NEEDBUF(4);\
  				 	*(unsigned long *)&_seqbuf[_seqbufptr] = SEQ_ECHO | ((key) << 8);\
  				 	_SEQ_ADVBUF(4);}
  
  #define SEQ_MIDIOUT(device, byte)	{_SEQ_NEEDBUF(4);\
  					_seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
  					_seqbuf[_seqbufptr+1] = (byte);\
  					_seqbuf[_seqbufptr+2] = (device);\
  					_seqbuf[_seqbufptr+3] = 0;\
  					_SEQ_ADVBUF(4);}
  #define SEQ_WRPATCH(patch, len)		{if (_seqbufptr) seqbuf_dump();\
  					if (write(seqfd, (char*)(patch), len)==-1) \
  					   perror("Write patch: /dev/sequencer");}
  
  #endif
  long soundcard_init(long mem_start);
  #endif
  