text: #ifndef SOUNDCARD_H
  #define SOUNDCARD_H
  /*
   * Copyright by Hannu Savolainen 1993-1997
   *
   * 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.
   */
  
  
  /*
   * OSS interface version. With versions earlier than 3.6 this value is
   * an integer with value less than 361. In versions 3.6 and later
   * it's a six digit hexadecimal value. For example value
   * of 0x030600 represents OSS version 3.6.0.
   * Use ioctl(fd, OSS_GETVERSION, &int) to get the version number of
   * the currently active driver.
   */
  #define SOUND_VERSION	0x030802
  #define OPEN_SOUND_SYSTEM
  
  /* In Linux we need to be prepared for cross compiling */
  #include <linux/ioctl.h>
  
  /* Endian macros. */
  #ifdef __KERNEL__
  #  include <asm/byteorder.h>
  #else
  #  include <endian.h>
  #endif
  
  /*
   *	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
  #define SNDCARD_UART6850	8
  #define SNDCARD_GUS16		9
  #define SNDCARD_MSS		10
  #define SNDCARD_PSS     	11
  #define SNDCARD_SSCAPE		12
  #define SNDCARD_PSS_MPU     	13
  #define SNDCARD_PSS_MSS     	14
  #define SNDCARD_SSCAPE_MSS	15
  #define SNDCARD_TRXPRO		16
  #define SNDCARD_TRXPRO_SB	17
  #define SNDCARD_TRXPRO_MPU	18
  #define SNDCARD_MAD16		19
  #define SNDCARD_MAD16_MPU	20
  #define SNDCARD_CS4232		21
  #define SNDCARD_CS4232_MPU	22
  #define SNDCARD_MAUI		23
  #define SNDCARD_PSEUDO_MSS	24
  #define SNDCARD_GUSPNP		25
  #define SNDCARD_UART401		26
  /* Sound card numbers 27 to N are reserved. Don't add more numbers here. */
  
  /***********************************
   * IOCTL Commands for /dev/sequencer
   */
  
  #ifndef _SIOWR
  #if defined(_IOWR) && (defined(_AIX) || (!defined(sun) && !defined(sparc) && !defined(__sparc__) && !defined(__INCioctlh) && !defined(__Lynx__)))
  /* Use already defined ioctl defines if they exist (except with Sun or Sparc) */
  #define	SIOCPARM_MASK	IOCPARM_MASK
  #define	SIOC_VOID	IOC_VOID
  #define	SIOC_OUT	IOC_OUT
  #define	SIOC_IN		IOC_IN
  #define	SIOC_INOUT	IOC_INOUT
  #define _SIOC_SIZE	_IOC_SIZE
  #define _SIOC_DIR	_IOC_DIR
  #define _SIOC_NONE	_IOC_NONE
  #define _SIOC_READ	_IOC_READ
  #define _SIOC_WRITE	_IOC_WRITE
  #define	_SIO		_IO
  #define	_SIOR		_IOR
  #define	_SIOW		_IOW
  #define	_SIOWR		_IOWR
  #else
  
  /* 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 8191 bytes.
   */
  /* #define	SIOCTYPE		(0xff<<8) */
  #define	SIOCPARM_MASK	0x1fff		/* parameters must be < 8192 bytes */
  #define	SIOC_VOID	0x00000000	/* no parameters */
  #define	SIOC_OUT	0x20000000	/* copy out parameters */
  #define	SIOC_IN		0x40000000	/* copy in parameters */
  #define	SIOC_INOUT	(SIOC_IN|SIOC_OUT)
  /* the 0x20000000 is so we can distinguish new ioctl's from old */
  #define	_SIO(x,y)	((int)(SIOC_VOID|(x<<8)|y))
  #define	_SIOR(x,y,t)	((int)(SIOC_OUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
  #define	_SIOW(x,y,t)	((int)(SIOC_IN|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
  /* this should be _SIORW, but stdio got there first */
  #define	_SIOWR(x,y,t)	((int)(SIOC_INOUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
  #define _SIOC_SIZE(x)	((x>>16)&SIOCPARM_MASK)	
  #define _SIOC_DIR(x)	(x & 0xf0000000)
  #define _SIOC_NONE	SIOC_VOID
  #define _SIOC_READ	SIOC_OUT
  #define _SIOC_WRITE	SIOC_IN
  #  endif /* _IOWR */
  #endif  /* !_SIOWR */
  
  #define SNDCTL_SEQ_RESET		_SIO  ('Q', 0)
  #define SNDCTL_SEQ_SYNC			_SIO  ('Q', 1)
  #define SNDCTL_SYNTH_INFO		_SIOWR('Q', 2, struct synth_info)
  #define SNDCTL_SEQ_CTRLRATE		_SIOWR('Q', 3, int)	/* Set/get timer resolution (HZ) */
  #define SNDCTL_SEQ_GETOUTCOUNT		_SIOR ('Q', 4, int)
  #define SNDCTL_SEQ_GETINCOUNT		_SIOR ('Q', 5, int)
  #define SNDCTL_SEQ_PERCMODE		_SIOW ('Q', 6, int)
  #define SNDCTL_FM_LOAD_INSTR		_SIOW ('Q', 7, struct sbi_instrument)	/* Obsolete. Don't use!!!!!! */
  #define SNDCTL_SEQ_TESTMIDI		_SIOW ('Q', 8, int)
  #define SNDCTL_SEQ_RESETSAMPLES		_SIOW ('Q', 9, int)
  #define SNDCTL_SEQ_NRSYNTHS		_SIOR ('Q',10, int)
  #define SNDCTL_SEQ_NRMIDIS		_SIOR ('Q',11, int)
  #define SNDCTL_MIDI_INFO		_SIOWR('Q',12, struct midi_info)
  #define SNDCTL_SEQ_THRESHOLD		_SIOW ('Q',13, int)
  #define SNDCTL_SYNTH_MEMAVL		_SIOWR('Q',14, int)	/* in=dev#, out=memsize */
  #define SNDCTL_FM_4OP_ENABLE		_SIOW ('Q',15, int)	/* in=dev# */
  #define SNDCTL_SEQ_PANIC		_SIO  ('Q',17)
  #define SNDCTL_SEQ_OUTOFBAND		_SIOW ('Q',18, struct seq_event_rec)
  #define SNDCTL_SEQ_GETTIME		_SIOR ('Q',19, int)
  #define SNDCTL_SYNTH_ID			_SIOWR('Q',20, struct synth_info)
  #define SNDCTL_SYNTH_CONTROL		_SIOWR('Q',21, struct synth_control)
  #define SNDCTL_SYNTH_REMOVESAMPLE	_SIOWR('Q',22, struct remove_sample)
  
  typedef struct synth_control
  {
  	int devno;	/* Synthesizer # */
  	char data[4000]; /* Device spesific command/data record */
  }synth_control;
  
  typedef struct remove_sample
  {
  	int devno;	/* Synthesizer # */
  	int bankno;	/* MIDI bank # (0=General MIDI) */
  	int instrno;	/* MIDI instrument number */
  } remove_sample;
  
  typedef struct seq_event_rec {
  		unsigned char arr[8];
  } seq_event_rec;
  
  #define SNDCTL_TMR_TIMEBASE		_SIOWR('T', 1, int)
  #define SNDCTL_TMR_START		_SIO  ('T', 2)
  #define SNDCTL_TMR_STOP			_SIO  ('T', 3)
  #define SNDCTL_TMR_CONTINUE		_SIO  ('T', 4)
  #define SNDCTL_TMR_TEMPO		_SIOWR('T', 5, int)
  #define SNDCTL_TMR_SOURCE		_SIOWR('T', 6, int)
  #	define TMR_INTERNAL		0x00000001
  #	define TMR_EXTERNAL		0x00000002
  #		define TMR_MODE_MIDI	0x00000010
  #		define TMR_MODE_FSK	0x00000020
  #		define TMR_MODE_CLS	0x00000040
  #		define TMR_MODE_SMPTE	0x00000080
  #define SNDCTL_TMR_METRONOME		_SIOW ('T', 7, int)
  #define SNDCTL_TMR_SELECT		_SIOW ('T', 8, int)
  
  /*
   * Some big endian/little endian handling macros
   */
  
  #define _LINUX_PATCHKEY_H_INDIRECT
  #include <linux/patchkey.h>
  #undef _LINUX_PATCHKEY_H_INDIRECT
  
  #if defined(__KERNEL__)
  #  if defined(__BIG_ENDIAN)
  #    define AFMT_S16_NE AFMT_S16_BE
  #  elif defined(__LITTLE_ENDIAN)
  #    define AFMT_S16_NE AFMT_S16_LE
  #  else
  #    error "could not determine byte order"
  #  endif
  #elif defined(__BYTE_ORDER)
  #  if __BYTE_ORDER == __BIG_ENDIAN
  #    define AFMT_S16_NE AFMT_S16_BE
  #  elif __BYTE_ORDER == __LITTLE_ENDIAN
  #    define AFMT_S16_NE AFMT_S16_LE
  #  else
  #    error "could not determine byte order"
  #  endif
  #endif
  
  /*
   *	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 probably too limited.
   *
   *      (PBD) As Hannu guessed, the GUS structure is too limited for 
   *      the WaveFront, but this is the right place for a constant definition.
   */
  
  struct patch_info {
  		unsigned short key;		/* Use WAVE_PATCH here */
  #define WAVE_PATCH	   _PATCHKEY(0x04)
  #define GUS_PATCH	   WAVE_PATCH
  #define WAVEFRONT_PATCH    _PATCHKEY(0x06)
  
  		short device_no;	/* Synthesizer number */
  		short instr_no;		/* Midi pgm# */
  
  		unsigned int 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 */
  #define WAVE_FAST_RELEASE 0x80	/* bit 7 = Shut off immediately after note off */
  				/* 	(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 */
  #define WAVE_FRACTIONS	0x00080000	/* Fraction information is valid */
  /* Reserved bits */
  #define WAVE_ROM	0x40000000	/* For future use */
  #define WAVE_MULAW	0x20000000	/* For future use */
  /* Other bits must be zeroed */
  
  		int len;	/* Size of the wave data in bytes */
  		int 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 an 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 int base_note;
  		unsigned int high_note;
  		unsigned int 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		fractions;
  		int		reserved1;
  	        int		spare[2];
  		char data[1];	/* The waveform data starts here */
  	};
  
  struct sysex_info {
  		short key;		/* Use SYSEX_PATCH or MAUI_PATCH here */
  #define SYSEX_PATCH	_PATCHKEY(0x05)
  #define MAUI_PATCH	_PATCHKEY(0x06)
  		short device_no;	/* Synthesizer number */
  		int len;	/* Size of the sysex data in bytes */
  		unsigned char data[1];	/* Sysex data starts here */
  	};
  
  /*
   * /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 >= 128,
   * 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		TMR_WAIT_ABS
  #define SEQ_PGMCHANGE		3
  #define SEQ_FMPGMCHANGE		SEQ_PGMCHANGE
  #define SEQ_SYNCTIMER		TMR_START
  #define SEQ_MIDIPUTC		5
  #define SEQ_DRUMON		6	/*** OBSOLETE ***/
  #define SEQ_DRUMOFF		7	/*** OBSOLETE ***/
  #define SEQ_ECHO		TMR_ECHO	/* For synching programs with output */
  #define SEQ_AFTERTOUCH		9
  #define SEQ_CONTROLLER		10
  
  /*******************************************
   *	Midi controller numbers
   *******************************************
   * Controllers 0 to 31 (0x00 to 0x1f) and
   * 32 to 63 (0x20 to 0x3f) are continuous
   * controllers.
   * In the MIDI 1.0 these controllers are sent using
   * two messages. Controller numbers 0 to 31 are used
   * to send the MSB and the controller numbers 32 to 63
   * are for the LSB. Note that just 7 bits are used in MIDI bytes.
   */
  
  #define	   CTL_BANK_SELECT		0x00
  #define	   CTL_MODWHEEL			0x01
  #define    CTL_BREATH			0x02
  /*		undefined		0x03 */
  #define    CTL_FOOT			0x04
  #define    CTL_PORTAMENTO_TIME		0x05
  #define    CTL_DATA_ENTRY		0x06
  #define    CTL_MAIN_VOLUME		0x07
  #define    CTL_BALANCE			0x08
  /*		undefined		0x09 */
  #define    CTL_PAN			0x0a
  #define    CTL_EXPRESSION		0x0b
  /*		undefined		0x0c */
  /*		undefined		0x0d */
  /*		undefined		0x0e */
  /*		undefined		0x0f */
  #define    CTL_GENERAL_PURPOSE1	0x10
  #define    CTL_GENERAL_PURPOSE2	0x11
  #define    CTL_GENERAL_PURPOSE3	0x12
  #define    CTL_GENERAL_PURPOSE4	0x13
  /*		undefined		0x14 - 0x1f */
  
  /*		undefined		0x20 */
  /* The controller numbers 0x21 to 0x3f are reserved for the */
  /* least significant bytes of the controllers 0x00 to 0x1f. */
  /* These controllers are not recognised by the driver. */
  
  /* Controllers 64 to 69 (0x40 to 0x45) are on/off switches. */
  /* 0=OFF and 127=ON (intermediate values are possible) */
  #define    CTL_DAMPER_PEDAL		0x40
  #define    CTL_SUSTAIN			0x40	/* Alias */
  #define    CTL_HOLD			0x40	/* Alias */
  #define    CTL_PORTAMENTO		0x41
  #define    CTL_SOSTENUTO		0x42
  #define    CTL_SOFT_PEDAL		0x43
  /*		undefined		0x44 */
  #define    CTL_HOLD2			0x45
  /*		undefined		0x46 - 0x4f */
  
  #define    CTL_GENERAL_PURPOSE5	0x50
  #define    CTL_GENERAL_PURPOSE6	0x51
  #define    CTL_GENERAL_PURPOSE7	0x52
  #define    CTL_GENERAL_PURPOSE8	0x53
  /*		undefined		0x54 - 0x5a */
  #define    CTL_EXT_EFF_DEPTH		0x5b
  #define    CTL_TREMOLO_DEPTH		0x5c
  #define    CTL_CHORUS_DEPTH		0x5d
  #define    CTL_DETUNE_DEPTH		0x5e
  #define    CTL_CELESTE_DEPTH		0x5e	/* Alias for the above one */
  #define    CTL_PHASER_DEPTH		0x5f
  #define    CTL_DATA_INCREMENT		0x60
  #define    CTL_DATA_DECREMENT		0x61
  #define    CTL_NONREG_PARM_NUM_LSB	0x62
  #define    CTL_NONREG_PARM_NUM_MSB	0x63
  #define    CTL_REGIST_PARM_NUM_LSB	0x64
  #define    CTL_REGIST_PARM_NUM_MSB	0x65
  /*		undefined		0x66 - 0x78 */
  /*		reserved		0x79 - 0x7f */
  
  /* Pseudo controllers (not midi compatible) */
  #define    CTRL_PITCH_BENDER		255
  #define    CTRL_PITCH_BENDER_RANGE	254
  #define    CTRL_EXPRESSION		253	/* Obsolete */
  #define    CTRL_MAIN_VOLUME		252	/* Obsolete */
  #define SEQ_BALANCE		11
  #define SEQ_VOLMODE             12
  
  /*
   * Volume mode decides how volumes are used
   */
  
  #define VOL_METHOD_ADAGIO	1
  #define VOL_METHOD_LINEAR	2
  
  /*
   * 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 wave table use struct patch_info. Initialize the key field
   *      to WAVE_PATCH.
   */
  #define SEQ_PRIVATE		0xfe	/* Low level HW dependent events (8 bytes) */
  #define SEQ_EXTENDED		0xff	/* Extended events (8 bytes) OBSOLETE */
  
  /*
   * Record for FM patches
   */
  
  typedef unsigned char sbi_instr_data[32];
  
  struct sbi_instrument {
  		unsigned short	key;	/* FM_PATCH or OPL3_PATCH */
  #define FM_PATCH	_PATCHKEY(0x01)
  #define OPL3_PATCH	_PATCHKEY(0x03)
  		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
  #define SYNTH_TYPE_MIDI			2	/* Midi interface */
  
  		int	synth_subtype;
  #define FM_TYPE_ADLIB			0x00
  #define FM_TYPE_OPL3			0x01
  #define MIDI_TYPE_MPU401		0x401
  
  #define SAMPLE_TYPE_BASIC		0x10
  #define SAMPLE_TYPE_GUS			SAMPLE_TYPE_BASIC
  #define SAMPLE_TYPE_WAVEFRONT           0x11
  
  		int	perc_mode;	/* No longer supported */
  		int	nr_voices;
  		int	nr_drums;	/* Obsolete field */
  		int	instr_bank_size;
  		unsigned int	capabilities;	
  #define SYNTH_CAP_PERCMODE		0x00000001 /* No longer used */
  #define SYNTH_CAP_OPL3			0x00000002 /* Set if OPL3 supported */
  #define SYNTH_CAP_INPUT			0x00000004 /* Input (MIDI) device */
  		int	dummies[19];	/* Reserve space */
  	};
  
  struct sound_timer_info {
  		char name[32];
  		int caps;
  	};
  
  #define MIDI_CAP_MPU401		1		/* MPU-401 intelligent mode */
  
  struct midi_info {
  		char		name[30];
  		int		device;		/* 0-N. INITIALIZE BEFORE CALLING */
  		unsigned int	capabilities;	/* To be defined later */
  		int		dev_type;
  		int		dummies[18];	/* Reserve space */
  	};
  
  /********************************************
   * ioctl commands for the /dev/midi##
   */
  typedef struct {
  		unsigned char cmd;
  		char nr_args, nr_returns;
  		unsigned char data[30];
  	} mpu_command_rec;
  
  #define SNDCTL_MIDI_PRETIME		_SIOWR('m', 0, int)
  #define SNDCTL_MIDI_MPUMODE		_SIOWR('m', 1, int)
  #define SNDCTL_MIDI_MPUCMD		_SIOWR('m', 2, mpu_command_rec)
  
  /********************************************
   * IOCTL commands for /dev/dsp and /dev/audio
   */
  
  #define SNDCTL_DSP_RESET		_SIO  ('P', 0)
  #define SNDCTL_DSP_SYNC			_SIO  ('P', 1)
  #define SNDCTL_DSP_SPEED		_SIOWR('P', 2, int)
  #define SNDCTL_DSP_STEREO		_SIOWR('P', 3, int)
  #define SNDCTL_DSP_GETBLKSIZE		_SIOWR('P', 4, int)
  #define SNDCTL_DSP_SAMPLESIZE		SNDCTL_DSP_SETFMT
  #define SNDCTL_DSP_CHANNELS		_SIOWR('P', 6, int)
  #define SOUND_PCM_WRITE_CHANNELS	SNDCTL_DSP_CHANNELS
  #define SOUND_PCM_WRITE_FILTER		_SIOWR('P', 7, int)
  #define SNDCTL_DSP_POST			_SIO  ('P', 8)
  #define SNDCTL_DSP_SUBDIVIDE		_SIOWR('P', 9, int)
  #define SNDCTL_DSP_SETFRAGMENT		_SIOWR('P',10, int)
  
  /*	Audio data formats (Note! U8=8 and S16_LE=16 for compatibility) */
  #define SNDCTL_DSP_GETFMTS		_SIOR ('P',11, int) /* Returns a mask */
  #define SNDCTL_DSP_SETFMT		_SIOWR('P',5, int) /* Selects ONE fmt*/
  #	define AFMT_QUERY		0x00000000	/* Return current fmt */
  #	define AFMT_MU_LAW		0x00000001
  #	define AFMT_A_LAW		0x00000002
  #	define AFMT_IMA_ADPCM		0x00000004
  #	define AFMT_U8			0x00000008
  #	define AFMT_S16_LE		0x00000010	/* Little endian signed 16*/
  #	define AFMT_S16_BE		0x00000020	/* Big endian signed 16 */
  #	define AFMT_S8			0x00000040
  #	define AFMT_U16_LE		0x00000080	/* Little endian U16 */
  #	define AFMT_U16_BE		0x00000100	/* Big endian U16 */
  #	define AFMT_MPEG		0x00000200	/* MPEG (2) audio */
  #	define AFMT_AC3		0x00000400	/* Dolby Digital AC3 */
  
  /*
   * Buffer status queries.
   */
  typedef struct audio_buf_info {
  			int fragments;	/* # of available fragments (partially usend ones not counted) */
  			int fragstotal;	/* Total # of fragments allocated */
  			int fragsize;	/* Size of a fragment in bytes */
  
  			int bytes;	/* Available space in bytes (includes partially used fragments) */
  			/* Note! 'bytes' could be more than fragments*fragsize */
  		} audio_buf_info;
  
  #define SNDCTL_DSP_GETOSPACE		_SIOR ('P',12, audio_buf_info)
  #define SNDCTL_DSP_GETISPACE		_SIOR ('P',13, audio_buf_info)
  #define SNDCTL_DSP_NONBLOCK		_SIO  ('P',14)
  #define SNDCTL_DSP_GETCAPS		_SIOR ('P',15, int)
  #	define DSP_CAP_REVISION		0x000000ff	/* Bits for revision level (0 to 255) */
  #	define DSP_CAP_DUPLEX		0x00000100	/* Full duplex record/playback */
  #	define DSP_CAP_REALTIME		0x00000200	/* Real time capability */
  #	define DSP_CAP_BATCH		0x00000400	/* Device has some kind of */
  							/* internal buffers which may */
  							/* cause some delays and */
  							/* decrease precision of timing */
  #	define DSP_CAP_COPROC		0x00000800	/* Has a coprocessor */
  							/* Sometimes it's a DSP */
  							/* but usually not */
  #	define DSP_CAP_TRIGGER		0x00001000	/* Supports SETTRIGGER */
  #	define DSP_CAP_MMAP		0x00002000	/* Supports mmap() */
  #	define DSP_CAP_MULTI		0x00004000	/* support multiple open */
  #	define DSP_CAP_BIND		0x00008000	/* channel binding to front/rear/cneter/lfe */
  
  
  #define SNDCTL_DSP_GETTRIGGER		_SIOR ('P',16, int)
  #define SNDCTL_DSP_SETTRIGGER		_SIOW ('P',16, int)
  #	define PCM_ENABLE_INPUT		0x00000001
  #	define PCM_ENABLE_OUTPUT		0x00000002
  
  typedef struct count_info {
  		int bytes;	/* Total # of bytes processed */
  		int blocks;	/* # of fragment transitions since last time */
  		int ptr;	/* Current DMA pointer value */
  	} count_info;
  
  #define SNDCTL_DSP_GETIPTR		_SIOR ('P',17, count_info)
  #define SNDCTL_DSP_GETOPTR		_SIOR ('P',18, count_info)
  
  typedef struct buffmem_desc {
  		unsigned *buffer;
  		int size;
  	} buffmem_desc;
  #define SNDCTL_DSP_MAPINBUF		_SIOR ('P', 19, buffmem_desc)
  #define SNDCTL_DSP_MAPOUTBUF		_SIOR ('P', 20, buffmem_desc)
  #define SNDCTL_DSP_SETSYNCRO		_SIO  ('P', 21)
  #define SNDCTL_DSP_SETDUPLEX		_SIO  ('P', 22)
  #define SNDCTL_DSP_GETODELAY		_SIOR ('P', 23, int)
  
  #define SNDCTL_DSP_GETCHANNELMASK		_SIOWR('P', 64, int)
  #define SNDCTL_DSP_BIND_CHANNEL		_SIOWR('P', 65, int)
  #	define DSP_BIND_QUERY		0x00000000
  #	define DSP_BIND_FRONT		0x00000001
  #	define DSP_BIND_SURR		0x00000002
  #	define DSP_BIND_CENTER_LFE	0x00000004
  #	define DSP_BIND_HANDSET		0x00000008
  #	define DSP_BIND_MIC		0x00000010
  #	define DSP_BIND_MODEM1		0x00000020
  #	define DSP_BIND_MODEM2		0x00000040
  #	define DSP_BIND_I2S		0x00000080
  #	define DSP_BIND_SPDIF		0x00000100
  
  #define SNDCTL_DSP_SETSPDIF		_SIOW ('P', 66, int)
  #define SNDCTL_DSP_GETSPDIF		_SIOR ('P', 67, int)
  #	define SPDIF_PRO	0x0001
  #	define SPDIF_N_AUD	0x0002
  #	define SPDIF_COPY	0x0004
  #	define SPDIF_PRE	0x0008
  #	define SPDIF_CC		0x07f0
  #	define SPDIF_L		0x0800
  #	define SPDIF_DRS	0x4000
  #	define SPDIF_V		0x8000
  
  /*
   * Application's profile defines the way how playback underrun situations should be handled.
   * 
   *	APF_NORMAL (the default) and APF_NETWORK make the driver to cleanup the
   *	playback buffer whenever an underrun occurs. This consumes some time
   *	prevents looping the existing buffer.
   *	APF_CPUINTENS is intended to be set by CPU intensive applications which
   *	are likely to run out of time occasionally. In this mode the buffer cleanup is
   *	disabled which saves CPU time but also let's the previous buffer content to
   *	be played during the "pause" after the underrun.
   */
  #define SNDCTL_DSP_PROFILE		_SIOW ('P', 23, int)
  #define	  APF_NORMAL	0	/* Normal applications */
  #define	  APF_NETWORK	1	/* Underruns probably caused by an "external" delay */
  #define   APF_CPUINTENS 2	/* Underruns probably caused by "overheating" the CPU */
  
  #define SOUND_PCM_READ_RATE		_SIOR ('P', 2, int)
  #define SOUND_PCM_READ_CHANNELS		_SIOR ('P', 6, int)
  #define SOUND_PCM_READ_BITS		_SIOR ('P', 5, int)
  #define SOUND_PCM_READ_FILTER		_SIOR ('P', 7, int)
  
  /* Some alias names */
  #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
  
  /*
   * ioctl calls to be used in communication with coprocessors and
   * DSP chips.
   */
  
  typedef struct copr_buffer {
  		int command;	/* Set to 0 if not used */
  		int flags;
  #define CPF_NONE		0x0000
  #define CPF_FIRST		0x0001	/* First block */
  #define CPF_LAST		0x0002	/* Last block */
  		int len;
  		int offs;	/* If required by the device (0 if not used) */
  
  		unsigned char data[4000]; /* NOTE! 4000 is not 4k */
  	} copr_buffer;
  
  typedef struct copr_debug_buf {
  		int command;	/* Used internally. Set to 0 */
  		int parm1;
  		int parm2;
  		int flags;	
  		int len;	/* Length of data in bytes */
  	} copr_debug_buf;
  
  typedef struct copr_msg {
  		int len;
  		unsigned char data[4000];
  	} copr_msg;
  
  #define SNDCTL_COPR_RESET             _SIO  ('C',  0)
  #define SNDCTL_COPR_LOAD	      _SIOWR('C',  1, copr_buffer)
  #define SNDCTL_COPR_RDATA	      _SIOWR('C',  2, copr_debug_buf)
  #define SNDCTL_COPR_RCODE	      _SIOWR('C',  3, copr_debug_buf)
  #define SNDCTL_COPR_WDATA	      _SIOW ('C',  4, copr_debug_buf)
  #define SNDCTL_COPR_WCODE	      _SIOW ('C',  5, copr_debug_buf)
  #define SNDCTL_COPR_RUN		      _SIOWR('C',  6, copr_debug_buf)
  #define SNDCTL_COPR_HALT	      _SIOWR('C',  7, copr_debug_buf)
  #define SNDCTL_COPR_SENDMSG	      _SIOWR('C',  8, copr_msg)
  #define SNDCTL_COPR_RCVMSG	      _SIOR ('C',  9, copr_msg)
  
  /*********************************************
   * 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	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	/*  Recording monitor  */
  #define SOUND_MIXER_ALTPCM	10
  #define SOUND_MIXER_RECLEV	11	/* Recording level */
  #define SOUND_MIXER_IGAIN	12	/* Input gain */
  #define SOUND_MIXER_OGAIN	13	/* Output gain */
  /* 
   * The AD1848 codec and compatibles have three line level inputs
   * (line, aux1 and aux2). Since each card manufacturer have assigned
   * different meanings to these inputs, it's inpractical to assign
   * specific meanings (line, cd, synth etc.) to them.
   */
  #define SOUND_MIXER_LINE1	14	/* Input source 1  (aux1) */
  #define SOUND_MIXER_LINE2	15	/* Input source 2  (aux2) */
  #define SOUND_MIXER_LINE3	16	/* Input source 3  (line) */
  #define SOUND_MIXER_DIGITAL1	17	/* Digital (input) 1 */
  #define SOUND_MIXER_DIGITAL2	18	/* Digital (input) 2 */
  #define SOUND_MIXER_DIGITAL3	19	/* Digital (input) 3 */
  #define SOUND_MIXER_PHONEIN	20	/* Phone input */
  #define SOUND_MIXER_PHONEOUT	21	/* Phone output */
  #define SOUND_MIXER_VIDEO	22	/* Video/TV (audio) in */
  #define SOUND_MIXER_RADIO	23	/* Radio in */
  #define SOUND_MIXER_MONITOR	24	/* Monitor (usually mic) volume */
  #define SOUND_MIXER_MTK_VOL 25
  
  
  /* 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
  
  /* Note!	Number 31 cannot be used since the sign bit is reserved */
  #define SOUND_MIXER_NONE	31
  
  /*
   * The following unsupported macros are no longer functional.
   * Use SOUND_MIXER_PRIVATE# macros in future.
   */
  #define SOUND_MIXER_ENHANCE	SOUND_MIXER_NONE
  #define SOUND_MIXER_MUTE	SOUND_MIXER_NONE
  #define SOUND_MIXER_LOUD	SOUND_MIXER_NONE
  
  
  #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"}
  
  /*	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 */
  #define SOUND_MIXER_OUTSRC	0xfa	/* Arg contains a bit for each input source to output */
  #define SOUND_MIXER_OUTMASK	0xf9	/* Arg contains a bit for each supported input source to output */
  
  /*	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_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_RADIO	(1 << SOUND_MIXER_RADIO)
  #define SOUND_MASK_VIDEO	(1 << SOUND_MIXER_VIDEO)
  #define SOUND_MASK_MONITOR	(1 << SOUND_MIXER_MONITOR)
  
  /* Obsolete macros */
  #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)		_SIOR('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_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 SOUND_MIXER_READ_MTK_VOL	MIXER_READ(SOUND_MIXER_MTK_VOL)
  
  /* Obsolete macros */
  #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)		_SIOWR('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_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_MIXER_WRITE_MTK_VOL	MIXER_WRITE(SOUND_MIXER_MTK_VOL)
  
  /* Obsolete macros */
  #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)
  
  typedef struct mixer_info
  {
    char id[16];
    char name[32];
    int  modify_counter;
    int fillers[10];
  } mixer_info;
  
  typedef struct _old_mixer_info /* Obsolete */
  {
    char id[16];
    char name[32];
  } _old_mixer_info;
  
  #define SOUND_MIXER_INFO		_SIOR ('M', 101, mixer_info)
  #define SOUND_OLD_MIXER_INFO		_SIOR ('M', 101, _old_mixer_info)
  
  /*
   * A mechanism for accessing "proprietary" mixer features. This method
   * permits passing 128 bytes of arbitrary data between a mixer application
   * and the mixer driver. Interpretation of the record is defined by
   * the particular mixer driver.
   */
  typedef unsigned char mixer_record[128];
  
  #define SOUND_MIXER_ACCESS		_SIOWR('M', 102, mixer_record)
  
  /*
   * Two ioctls for special souncard function
   */
  #define SOUND_MIXER_AGC  _SIOWR('M', 103, int)
  #define SOUND_MIXER_3DSE  _SIOWR('M', 104, int)
  
  /*
   * The SOUND_MIXER_PRIVATE# commands can be redefined by low level drivers.
   * These features can be used when accessing device specific features.
   */
  #define SOUND_MIXER_PRIVATE1		_SIOWR('M', 111, int)
  #define SOUND_MIXER_PRIVATE2		_SIOWR('M', 112, int)
  #define SOUND_MIXER_PRIVATE3		_SIOWR('M', 113, int)
  #define SOUND_MIXER_PRIVATE4		_SIOWR('M', 114, int)
  #define SOUND_MIXER_PRIVATE5		_SIOWR('M', 115, int)
  
  /*
   * SOUND_MIXER_GETLEVELS and SOUND_MIXER_SETLEVELS calls can be used
   * for querying current mixer settings from the driver and for loading
   * default volume settings _prior_ activating the mixer (loading
   * doesn't affect current state of the mixer hardware). These calls
   * are for internal use only.
   */
  
  typedef struct mixer_vol_table {
    int num;	/* Index to volume table */
    char name[32];
    int levels[32];
  } mixer_vol_table;
  
  #define SOUND_MIXER_GETLEVELS		_SIOWR('M', 116, mixer_vol_table)
  #define SOUND_MIXER_SETLEVELS		_SIOWR('M', 117, mixer_vol_table)
  
  /* 
   * An ioctl for identifying the driver version. It will return value
   * of the SOUND_VERSION macro used when compiling the driver.
   * This call was introduced in OSS version 3.6 and it will not work
   * with earlier versions (returns EINVAL).
   */
  #define OSS_GETVERSION			_SIOR ('M', 118, int)
  
  /*
   * Level 2 event types for /dev/sequencer
   */
  
  /*
   * The 4 most significant bits of byte 0 specify the class of
   * the event: 
   *
   *	0x8X = system level events,
   *	0x9X = device/port specific events, event[1] = device/port,
   *		The last 4 bits give the subtype:
   *			0x02	= Channel event (event[3] = chn).
   *			0x01	= note event (event[4] = note).
   *			(0x01 is not used alone but always with bit 0x02).
   *	       event[2] = MIDI message code (0x80=note off etc.)
   *
   */
  
  #define EV_SEQ_LOCAL		0x80
  #define EV_TIMING		0x81
  #define EV_CHN_COMMON		0x92
  #define EV_CHN_VOICE		0x93
  #define EV_SYSEX		0x94
  /*
   * Event types 200 to 220 are reserved for application use.
   * These numbers will not be used by the driver.
   */
  
  /*
   * Events for event type EV_CHN_VOICE
   */
  
  #define MIDI_NOTEOFF		0x80
  #define MIDI_NOTEON		0x90
  #define MIDI_KEY_PRESSURE	0xA0
  
  /*
   * Events for event type EV_CHN_COMMON
   */
  
  #define MIDI_CTL_CHANGE		0xB0
  #define MIDI_PGM_CHANGE		0xC0
  #define MIDI_CHN_PRESSURE	0xD0
  #define MIDI_PITCH_BEND		0xE0
  
  #define MIDI_SYSTEM_PREFIX	0xF0
  
  /*
   * Timer event types
   */
  #define TMR_WAIT_REL		1	/* Time relative to the prev time */
  #define TMR_WAIT_ABS		2	/* Absolute time since TMR_START */
  #define TMR_STOP		3
  #define TMR_START		4
  #define TMR_CONTINUE		5
  #define TMR_TEMPO		6
  #define TMR_ECHO		8
  #define TMR_CLOCK		9	/* MIDI clock */
  #define TMR_SPP			10	/* Song position pointer */
  #define TMR_TIMESIG		11	/* Time signature */
  
  /*
   *	Local event types
   */
  #define LOCL_STARTAUDIO		1
  
  #if !defined(__KERNEL__) || defined(USE_SEQ_MACROS)
  /*
   *	Some convenience macros to simplify programming of the
   *	/dev/sequencer interface
   *
   *	This is a legacy interface for applications written against
   *	the OSSlib-3.8 style interface. It is no longer possible
   *	to actually link against OSSlib with this header, but we
   *	still provide these macros for programs using them.
   *
   *	If you want to use OSSlib, it is recommended that you get
   *	the GPL version of OSS-4.x and build against that version
   *	of the header.
   *
   *	We redefine the extern keyword so that make headers_check
   *	does not complain about SEQ_USE_EXTBUF.
   */
  #define SEQ_DECLAREBUF()		SEQ_USE_EXTBUF()
  
  void seqbuf_dump(void);	/* This function must be provided by programs */
  
  #define SEQ_PM_DEFINES int __foo_bar___
  
  #define SEQ_LOAD_GMINSTR(dev, instr)
  #define SEQ_LOAD_GMDRUM(dev, drum)
  
  #define _SEQ_EXTERN extern
  #define SEQ_USE_EXTBUF() \
  		_SEQ_EXTERN unsigned char _seqbuf[]; \
  		_SEQ_EXTERN int _seqbuflen; _SEQ_EXTERN int _seqbufptr
  
  #ifndef USE_SIMPLE_MACROS
  /* 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;int _seqbufptr = 0
  #define _SEQ_NEEDBUF(len)		if ((_seqbufptr+(len)) > _seqbuflen) seqbuf_dump()
  #define _SEQ_ADVBUF(len)		_seqbufptr += len
  #define SEQ_DUMPBUF			seqbuf_dump
  #else
  /*
   * This variation of the sequencer macros is used just to format one event
   * using fixed buffer.
   * 
   * The program using the macro library must define the following macros before
   * using this library.
   *
   * #define _seqbuf 		 name of the buffer (unsigned char[]) 
   * #define _SEQ_ADVBUF(len)	 If the applic needs to know the exact
   *				 size of the event, this macro can be used.
   *				 Otherwise this must be defined as empty.
   * #define _seqbufptr		 Define the name of index variable or 0 if
   *				 not required. 
   */
  #define _SEQ_NEEDBUF(len)	/* empty */
  #endif
  
  #define SEQ_VOLUME_MODE(dev, mode)	{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = SEQ_EXTENDED;\
  					_seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
  					_seqbuf[_seqbufptr+2] = (dev);\
  					_seqbuf[_seqbufptr+3] = (mode);\
  					_seqbuf[_seqbufptr+4] = 0;\
  					_seqbuf[_seqbufptr+5] = 0;\
  					_seqbuf[_seqbufptr+6] = 0;\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  /*
   * Midi voice messages
   */
  
  #define _CHN_VOICE(dev, event, chn, note, parm) \
  					{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = EV_CHN_VOICE;\
  					_seqbuf[_seqbufptr+1] = (dev);\
  					_seqbuf[_seqbufptr+2] = (event);\
  					_seqbuf[_seqbufptr+3] = (chn);\
  					_seqbuf[_seqbufptr+4] = (note);\
  					_seqbuf[_seqbufptr+5] = (parm);\
  					_seqbuf[_seqbufptr+6] = (0);\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_START_NOTE(dev, chn, note, vol) \
  		_CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)
  
  #define SEQ_STOP_NOTE(dev, chn, note, vol) \
  		_CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)
  
  #define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
  		_CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)
  
  /*
   * Midi channel messages
   */
  
  #define _CHN_COMMON(dev, event, chn, p1, p2, w14) \
  					{_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = EV_CHN_COMMON;\
  					_seqbuf[_seqbufptr+1] = (dev);\
  					_seqbuf[_seqbufptr+2] = (event);\
  					_seqbuf[_seqbufptr+3] = (chn);\
  					_seqbuf[_seqbufptr+4] = (p1);\
  					_seqbuf[_seqbufptr+5] = (p2);\
  					*(short *)&_seqbuf[_seqbufptr+6] = (w14);\
  					_SEQ_ADVBUF(8);}
  /*
   * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
   * sending any MIDI bytes but it's absolutely not possible. Trying to do
   * so _will_ cause problems with MPU401 intelligent mode).
   *
   * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be 
   * sent by calling SEQ_SYSEX() several times (there must be no other events
   * between them). First sysex fragment must have 0xf0 in the first byte
   * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
   * between these sysex start and end markers cannot be larger than 0x7f. Also
   * lengths of each fragments (except the last one) must be 6.
   *
   * Breaking the above rules may work with some MIDI ports but is likely to
   * cause fatal problems with some other devices (such as MPU401).
   */
  #define SEQ_SYSEX(dev, buf, len) \
  					{int ii, ll=(len); \
  					 unsigned char *bufp=buf;\
  					 if (ll>6)ll=6;\
  					_SEQ_NEEDBUF(8);\
  					_seqbuf[_seqbufptr] = EV_SYSEX;\
  					_seqbuf[_seqbufptr+1] = (dev);\
  					for(ii=0;ii<ll;ii++)\
  					   _seqbuf[_seqbufptr+ii+2] = bufp[ii];\
  					for(ii=ll;ii<6;ii++)\
  					   _seqbuf[_seqbufptr+ii+2] = 0xff;\
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_CHN_PRESSURE(dev, chn, pressure) \
  		_CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)
  
  #define SEQ_SET_PATCH SEQ_PGM_CHANGE
  #define SEQ_PGM_CHANGE(dev, chn, patch) \
  		_CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
  
  #define SEQ_CONTROL(dev, chn, controller, value) \
  		_CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
  
  #define SEQ_BENDER(dev, chn, value) \
  		_CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
  
  
  #define SEQ_V2_X_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);\
  					_seqbuf[_seqbufptr+5] = ((value)&0xff);\
  					_seqbuf[_seqbufptr+6] = ((value>>8)&0xff);\
  					_seqbuf[_seqbufptr+7] = 0;\
  					_SEQ_ADVBUF(8);}
  /*
   * The following 5 macros are incorrectly implemented and obsolete.
   * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
   */
  #define SEQ_PITCHBEND(dev, voice, value) SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
  #define SEQ_BENDER_RANGE(dev, voice, value) SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
  #define SEQ_EXPRESSION(dev, voice, value) SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
  #define SEQ_MAIN_VOLUME(dev, voice, value) SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
  #define SEQ_PANNING(dev, voice, pos) SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
  
  /*
   * Timing and synchronization macros
   */
  
  #define _TIMER_EVENT(ev, parm)		{_SEQ_NEEDBUF(8);\
  				 	_seqbuf[_seqbufptr+0] = EV_TIMING; \
  				 	_seqbuf[_seqbufptr+1] = (ev); \
  					_seqbuf[_seqbufptr+2] = 0;\
  					_seqbuf[_seqbufptr+3] = 0;\
  				 	*(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_START_TIMER()		_TIMER_EVENT(TMR_START, 0)
  #define SEQ_STOP_TIMER()		_TIMER_EVENT(TMR_STOP, 0)
  #define SEQ_CONTINUE_TIMER()		_TIMER_EVENT(TMR_CONTINUE, 0)
  #define SEQ_WAIT_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_ABS, ticks)
  #define SEQ_DELTA_TIME(ticks)		_TIMER_EVENT(TMR_WAIT_REL, ticks)
  #define SEQ_ECHO_BACK(key)		_TIMER_EVENT(TMR_ECHO, key)
  #define SEQ_SET_TEMPO(value)		_TIMER_EVENT(TMR_TEMPO, value)
  #define SEQ_SONGPOS(pos)		_TIMER_EVENT(TMR_SPP, pos)
  #define SEQ_TIME_SIGNATURE(sig)		_TIMER_EVENT(TMR_TIMESIG, sig)
  
  /*
   * Local control events
   */
  
  #define _LOCAL_EVENT(ev, parm)		{_SEQ_NEEDBUF(8);\
  				 	_seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
  				 	_seqbuf[_seqbufptr+1] = (ev); \
  					_seqbuf[_seqbufptr+2] = 0;\
  					_seqbuf[_seqbufptr+3] = 0;\
  				 	*(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
  					_SEQ_ADVBUF(8);}
  
  #define SEQ_PLAYAUDIO(devmask)		_LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
  /*
   * Events for the level 1 interface only 
   */
  
  #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);}
  
  /*
   * Patch loading.
   */
  #define SEQ_WRPATCH(patchx, len) \
  		{if (_seqbufptr) SEQ_DUMPBUF();\
  		 if (write(seqfd, (char*)(patchx), len)==-1) \
  		    perror("Write patch: /dev/sequencer");}
  #define SEQ_WRPATCH2(patchx, len) \
  		(SEQ_DUMPBUF(), write(seqfd, (char*)(patchx), len))
  
  #endif
  #endif
  