Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...

[firefly-linux-kernel-4.4.55.git] / include / linux / soundcard.h

#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
#else
# if 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
#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: 
 *
 *      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