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#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>

/*

 *      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

 */

#if defined(_AIX) || defined(AIX) || defined(sparc) || defined(__sparc__) || defined(HPPA) || defined(PPC) || defined(__mc68000__)

/* Big endian machines */

#  define _PATCHKEY(id) (0xfd00|id)

#  define AFMT_S16_NE AFMT_S16_BE

#else

#  define _PATCHKEY(id) ((id<<8)|0xfd)

#  define AFMT_S16_NE AFMT_S16_LE

#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 */

/* 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)

/* 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)

/* 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: