src/include/sys/soundcard.h

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/*
 * Purpose: The C/C++ header file that defines the OSS API.
 * Description:
 * This header file contains all the declarations required to compile OSS
 * programs. The latest version is always installed together with OSS
 * use of the latest version is strongly recommended.
 *
 * {!notice This header file contains many obsolete definitions
 * (for compatibility with older applications that still ned them).
 * Do not use this file as a reference manual of OSS.
 * Please check the OSS Programmer's guide for descriptions
 * of the supported API details (http://manuals.opensound.com/developer).} 
 */

#ifndef SOUNDCARD_H
#define SOUNDCARD_H

/*
 * This file is part of Open Sound System
 *
 * Copyright (C) 4Front Technologies 1996-2008.
 *
 * This software is released under the BSD license.
 * See the COPYING file included in the main directory of this source
 * distribution for the license terms and conditions
 */


#if defined(__cplusplus)
#define EXTERNC extern "C"
#else
#define EXTERNC extern
#endif /* EXTERN_C_WRAPPERS */

#define OSS_VERSION     0x040100 /* 4.1 */

#define SOUND_VERSION   OSS_VERSION
#define OPEN_SOUND_SYSTEM

#if defined(__hpux) && !defined(_HPUX_SOURCE)
#       error "-D_HPUX_SOURCE must be used when compiling OSS applications"
#endif

#ifdef __hpux
#include <sys/ioctl.h>
#endif

#ifdef linux
/* In Linux we need to be prepared for cross compiling */
#include <linux/ioctl.h>
#else
# ifdef __FreeBSD__
#    include <sys/ioccom.h>
# else
#    include <sys/ioctl.h>
# endif
#endif

#ifndef __SIOWR
#if defined(__hpux) || (defined(_IOWR) && (defined(_AIX) || (!defined(sun) && !defined(sparc) && !defined(__INCioctlh) && !defined(__Lynx__))))

/* 
 * Make sure the ioctl macros are compatible with the ones already used
 * by this operating system.
 */
#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


#elif defined(__minix)

#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     _MINIX_IOCTL_SIZE
#define __SIOC_DIR(x)   (x & 0xf0000000)
#define __SIOC_NONE     _IOC_VOID
#define __SIOC_READ             _IOC_READ
#define __SIOC_WRITE    _IOC_WRITE
#define __SIO           _IO
#define __SIOR          _IOR
#define __SIOW          _IOW
#define __SIOWR         _IORW


#else

/* #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)

#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))
#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 OSS_LONGNAME_SIZE       64
#define OSS_LABEL_SIZE          16
#define OSS_DEVNODE_SIZE        32
#define OSS_DEVNAME_SIZE        64
#define OSS_CMD_SIZE            64
#define OSS_ID_SIZE             16
#define OSS_HANDLE_SIZE         32
typedef char oss_longname_t[OSS_LONGNAME_SIZE];
typedef char oss_label_t[OSS_LABEL_SIZE];
typedef char oss_devnode_t[OSS_DEVNODE_SIZE];
typedef char oss_devname_t[OSS_DEVNAME_SIZE];
typedef char oss_cmd_t[OSS_CMD_SIZE];
typedef char oss_id_t[OSS_ID_SIZE];
typedef char oss_handle_t[OSS_HANDLE_SIZE];

#ifndef DISABLE_SEQUENCER
/*
 ****************************************************************************
 * IOCTL Commands for /dev/sequencer and /dev/music (AKA /dev/sequencer2)
 *
 * Note that this interface is obsolete and no longer developed. New
 * applications should use /dev/midi instead.
 ****************************************************************************/
#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)       /* OBSOLETE - use SNDCTL_MIDIINFO instead */
#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)   /* Reserved for future use */
#define SNDCTL_SEQ_TIMING_ENABLE        __SIO  ('Q', 23)        /* Enable incoming MIDI timing messages */
#define SNDCTL_SEQ_ACTSENSE_ENABLE      __SIO  ('Q', 24)        /* Enable incoming active sensing messages */
#define SNDCTL_SEQ_RT_ENABLE            __SIO  ('Q', 25)        /* Enable other incoming realtime messages */

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)

/*
 * Sample loading mechanism for internal synthesizers (/dev/sequencer)
 * (for the .PAT format).
 */

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;

  /* 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.
 *
 * NOTE! All 4 byte events are now obsolete. Applications should not write
 *       them. However 4 byte events are still used as inputs from
 *       /dev/sequencer (/dev/music uses only 8 byte ones).
 */
#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
#define SEQ_BALANCE             11
#define SEQ_VOLMODE             12

/************************************
 *      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 */

/*
 * Volume mode defines 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;
};

struct midi_info                /* OBSOLETE */
{
  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 */
};

/*
 * 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
#define EV_SYSTEM               0x95    /* MIDI system and real time messages (input only) */
/*
 * 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
#define LOCL_STARTAUDIO2        2
#define LOCL_STARTAUDIO3        3
#define LOCL_STARTAUDIO4        4

#if (!defined(__KERNEL__) && !defined(KERNEL) && !defined(INKERNEL) && !defined(_KERNEL)) || defined(USE_SEQ_MACROS)
/*
 * Some convenience macros to simplify programming of the
 * /dev/sequencer interface
 *
 * These macros define the API which should be used when possible.
 */
#define SEQ_DECLAREBUF()                SEQ_USE_EXTBUF()

void seqbuf_dump (void);        /* This function must be provided by programs */

EXTERNC int OSS_init (int seqfd, int buflen);
EXTERNC void OSS_seqbuf_dump (int fd, unsigned char *buf, int buflen);
EXTERNC void OSS_seq_advbuf (int len, int fd, unsigned char *buf, int buflen);
EXTERNC void OSS_seq_needbuf (int len, int fd, unsigned char *buf,
                              int buflen);
EXTERNC void OSS_patch_caching (int dev, int chn, int patch, int fd,
                                unsigned char *buf, int buflen);
EXTERNC void OSS_drum_caching (int dev, int chn, int patch, int fd,
                               unsigned char *buf, int buflen);
EXTERNC void OSS_write_patch (int fd, unsigned char *buf, int len);
EXTERNC int OSS_write_patch2 (int fd, unsigned char *buf, int len);

#define SEQ_PM_DEFINES int __foo_bar___
#ifdef OSSLIB
#  define SEQ_USE_EXTBUF() \
                EXTERNC unsigned char *_seqbuf; \
                EXTERNC int _seqbuflen;EXTERNC int _seqbufptr
#  define SEQ_DEFINEBUF(len) SEQ_USE_EXTBUF();static int _requested_seqbuflen=len
#  define _SEQ_ADVBUF(len) OSS_seq_advbuf(len, seqfd, _seqbuf, _seqbuflen)
#  define _SEQ_NEEDBUF(len) OSS_seq_needbuf(len, seqfd, _seqbuf, _seqbuflen)
#  define SEQ_DUMPBUF() OSS_seqbuf_dump(seqfd, _seqbuf, _seqbuflen)

#  define SEQ_LOAD_GMINSTR(dev, instr) \
                OSS_patch_caching(dev, -1, instr, seqfd, _seqbuf, _seqbuflen)
#  define SEQ_LOAD_GMDRUM(dev, drum) \
                OSS_drum_caching(dev, -1, drum, seqfd, _seqbuf, _seqbuflen)
#else /* !OSSLIB */

#  define SEQ_LOAD_GMINSTR(dev, instr)
#  define SEQ_LOAD_GMDRUM(dev, drum)

#  define SEQ_USE_EXTBUF() \
                EXTERNC unsigned char _seqbuf[]; \
                EXTERNC int _seqbuflen;EXTERNC 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
#endif /* !OSSLIB */

#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
#ifdef OSSLIB
#   define SEQ_PGM_CHANGE(dev, chn, patch) \
                {OSS_patch_caching(dev, chn, patch, seqfd, _seqbuf, _seqbuflen); \
                 _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0);}
#else
#   define SEQ_PGM_CHANGE(dev, chn, patch) \
                _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
#endif

#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 syncronization 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)
#define SEQ_PLAYAUDIO2(devmask)         _LOCAL_EVENT(LOCL_STARTAUDIO2, devmask)
#define SEQ_PLAYAUDIO3(devmask)         _LOCAL_EVENT(LOCL_STARTAUDIO3, devmask)
#define SEQ_PLAYAUDIO4(devmask)         _LOCAL_EVENT(LOCL_STARTAUDIO4, 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.
 */
#ifdef OSSLIB
#   define SEQ_WRPATCH(patchx, len) \
                OSS_write_patch(seqfd, (char*)(patchx), len)
#   define SEQ_WRPATCH2(patchx, len) \
                OSS_write_patch2(seqfd, (char*)(patchx), len)
#else
#   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
#endif /* ifndef DISABLE_SEQUENCER */

/*
 ****************************************************************************
 * ioctl commands for the /dev/midi## 
 ****************************************************************************/
#define SNDCTL_MIDI_PRETIME     __SIOWR('m', 0, int)

#if 0
/*
 * The SNDCTL_MIDI_MPUMODE and SNDCTL_MIDI_MPUCMD calls
 * are completely obsolete. The hardware device (MPU-401 "intelligent mode"
 * and compatibles) has disappeared from the market 10 years ago so there 
 * is no need for this stuff. The MPU-401 "UART" mode devices don't support
 * this stuff.
 */
typedef struct
{
  unsigned char cmd;
  char nr_args, nr_returns;
  unsigned char data[30];
} mpu_command_rec;

#define SNDCTL_MIDI_MPUMODE     __SIOWR('m', 1, int)
#define SNDCTL_MIDI_MPUCMD      __SIOWR('m', 2, mpu_command_rec)
#endif

/*
 * SNDCTL_MIDI_MTCINPUT turns on a mode where OSS automatically inserts
 * MTC quarter frame messages (F1 xx) to the input.
 * The argument is the MTC mode:
 *
 *      -1 = Turn MTC messages OFF (default)
 *      24 = 24 FPS 
 *      25 = 25 FPS 
 *      29 = 30 FPS drop frame
 *      30 = 30 FPS 
 *
 * Note that 25 FPS mode is probably the only mode that is supported. Other
 * modes may be supported in the future versions of OSS, 25 FPS is handy 
 * because it generates 25*4=100 quarter frame messages per second which
 * matches the usual 100 HZ system timer rate).
 *
 * The quarter frame timer will be reset to 0:00:00:00.0 at the moment this
 * ioctl is made.
 */
#define SNDCTL_MIDI_MTCINPUT    __SIOWR('m', 3, int)

/*
 * MTC/SMPTE time code record (for future use)
 */
typedef struct
{
  unsigned char hours, minutes, seconds, frames, qframes;
  char direction;
#define MTC_DIR_STOPPED          0
#define MTC_DIR_FORWARD          1
#define MTC_DIR_BACKWARD        -1
  unsigned char time_code_type;
  unsigned int flags;
} oss_mtc_data_t;

#define SNDCTL_MIDI_SETMODE     __SIOWR('m', 6, int)
#       define MIDI_MODE_TRADITIONAL    0
#       define MIDI_MODE_TIMED          1       /* Input times are in MIDI ticks */
#       define MIDI_MODE_TIMED_ABS      2       /* Input times are absolute (usecs) */

/*
 * Packet header for MIDI_MODE_TIMED and MIDI_MODE_TIMED_ABS
 */
#ifdef OSS_NO_LONG_LONG
  typedef unsigned long oss_midi_time_t;        /* This will not be enough but anyway */
#else
  typedef unsigned long long oss_midi_time_t;   /* Variable type for MIDI time (clock ticks) */
#endif

typedef struct
{
  int magic;                    /* Initialize to MIDI_HDR_MAGIC */
#define MIDI_HDR_MAGIC  -1
  unsigned short event_type;
#define MIDI_EV_WRITE                   0       /* Write or read (with payload) */
#define MIDI_EV_TEMPO                   1
#define MIDI_EV_ECHO                    2
#define MIDI_EV_START                   3
#define MIDI_EV_STOP                    4
#define MIDI_EV_CONTINUE                5
#define MIDI_EV_XPRESSWRITE             6
#define MIDI_EV_TIMEBASE                7
#define MIDI_EV_DEVCTL                  8       /* Device control read/write */
  unsigned short options;
#define MIDI_OPT_NONE                   0x0000
#define MIDI_OPT_TIMED                  0x0001
#define MIDI_OPT_CONTINUATION           0x0002
#define MIDI_OPT_USECTIME               0x0004  /* Time is absolute (in usecs) */
#define MIDI_OPT_BUSY                   0x0008  /* Reserved for internal use */
  oss_midi_time_t time;
#ifdef OSS_NO_LONG_LONG
  /* oss_midi_time_t is just 32 bits instead of 64. Use a padding word to compensate this */
  int budding;
#endif
  int parm;
  int filler[4];                /* Fur future expansion - init to zeros */
} midi_packet_header_t;
/* 
 * MIDI_PAYLOAD_SIZE is the maximum size of one MIDI input chunk. It must be
 * less (or equal) than 1024 which is the read size recommended in the 
 * documentation. TODO: Explain this better.
 */
#define MIDI_PAYLOAD_SIZE               1000

typedef struct
{
  midi_packet_header_t hdr;
  unsigned char payload[MIDI_PAYLOAD_SIZE];
} midi_packet_t;

#define SNDCTL_MIDI_TIMEBASE            __SIOWR('m', 7, int)
#define SNDCTL_MIDI_TEMPO               __SIOWR('m', 8, int)
/*
 * User land MIDI servers (synths) can use SNDCTL_MIDI_SET_LATENCY
 * to request MIDI events to be sent to them in advance. The parameter
 * (in microseconds) tells how much before the events are submitted.
 *
 * This feature is only valid for loopback devices and possibly some other
 * types of virtual devices.
 */
#define SNDCTL_MIDI_SET_LATENCY         __SIOW ('m', 9, int)
/*
 ****************************************************************************
 * IOCTL commands for /dev/dsp
 ****************************************************************************/

#define SNDCTL_DSP_HALT                 __SIO  ('P', 0)
#define SNDCTL_DSP_RESET                SNDCTL_DSP_HALT /* Old name */
#define SNDCTL_DSP_SYNC                 __SIO  ('P', 1)
#define SNDCTL_DSP_SPEED                __SIOWR('P', 2, int)

/* SNDCTL_DSP_STEREO is obsolete - use SNDCTL_DSP_CHANNELS instead */
#define SNDCTL_DSP_STEREO               __SIOWR('P', 3, int)
/* SNDCTL_DSP_STEREO is obsolete - use SNDCTL_DSP_CHANNELS instead */

#define SNDCTL_DSP_GETBLKSIZE           __SIOWR('P', 4, int)
#define SNDCTL_DSP_SAMPLESIZE           SNDCTL_DSP_SETFMT
#define SNDCTL_DSP_CHANNELS             __SIOWR('P', 6, 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 */

/* AC3 _compressed_ bitstreams (See Programmer's Guide for details). */
#       define AFMT_AC3         0x00000400
/* Ogg Vorbis _compressed_ bit streams */
#       define AFMT_VORBIS      0x00000800

/* 32 bit formats (MSB aligned) formats */
#       define AFMT_S32_LE      0x00001000
#       define AFMT_S32_BE      0x00002000

/* Reserved for _native_ endian double precision IEEE floating point */
#       define AFMT_FLOAT       0x00004000

/* 24 bit formats (LSB aligned in 32 bit word) formats */
#       define AFMT_S24_LE      0x00008000
#       define AFMT_S24_BE      0x00010000

/*
 * S/PDIF raw format. In this format the S/PDIF frames (including all
 * control and user bits) are included in the data stream. Each sample
 * is stored in a 32 bit frame (see IEC-958 for more info). This format
 * is supported by very few devices and it's only usable for purposes
 * where full access to the control/user bits is required (real time control).
 */
#       define AFMT_SPDIF_RAW   0x00020000

/* 24 bit packed (3 byte) little endian format (USB compatibility) */
#       define AFMT_S24_PACKED  0x00040000


/*
 * Some big endian/little endian handling macros (native endian and opposite
 * endian formats). The usage of these macros is described in the OSS
 * Programmer's Manual.
 */

#if defined(_AIX) || defined(AIX) || defined(sparc) || defined(__hppa) || defined(PPC) || defined(__powerpc__) && !defined(i386) && !defined(__i386) && !defined(__i386__)

/* Big endian machines */
#  define _PATCHKEY(id) (0xfd00|id)
#  define AFMT_S16_NE AFMT_S16_BE
#  define AFMT_U16_NE AFMT_U16_BE
#  define AFMT_S32_NE AFMT_S32_BE
#  define AFMT_S24_NE AFMT_S24_BE
#  define AFMT_S16_OE AFMT_S16_LE
#  define AFMT_S32_OE AFMT_S32_LE
#  define AFMT_S24_OE AFMT_S24_LE
#else
#  define _PATCHKEY(id) ((id<<8)|0xfd)
#  define AFMT_S16_NE AFMT_S16_LE
#  define AFMT_U16_NE AFMT_U16_LE
#  define AFMT_S32_NE AFMT_S32_LE
#  define AFMT_S24_NE AFMT_S24_LE
#  define AFMT_S16_OE AFMT_S16_BE
#  define AFMT_S32_OE AFMT_S32_BE
#  define AFMT_S24_OE AFMT_S24_BE
#endif
/*
 * 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_GETCAPS              __SIOR ('P',15, int)
#       define PCM_CAP_REVISION         0x000000ff      /* Bits for revision level (0 to 255) */
#       define PCM_CAP_DUPLEX           0x00000100      /* Full duplex record/playback */
#       define PCM_CAP_REALTIME         0x00000200      /* Not in use */
#       define PCM_CAP_BATCH            0x00000400      /* Device has some kind of */
                                                        /* internal buffers which may */
                                                        /* cause some delays and */
                                                        /* decrease precision of timing */
#       define PCM_CAP_COPROC           0x00000800      /* Has a coprocessor */
                                                        /* Sometimes it's a DSP */
                                                        /* but usually not */
#       define PCM_CAP_TRIGGER          0x00001000      /* Supports SETTRIGGER */
#       define PCM_CAP_MMAP             0x00002000      /* Supports mmap() */
#       define PCM_CAP_MULTI            0x00004000      /* Supports multiple open */
#       define PCM_CAP_BIND             0x00008000      /* Supports binding to front/rear/center/lfe */
#       define PCM_CAP_INPUT            0x00010000      /* Supports recording */
#       define PCM_CAP_OUTPUT           0x00020000      /* Supports playback */
#       define PCM_CAP_VIRTUAL          0x00040000      /* Virtual device */
/* 0x00040000 and 0x00080000 reserved for future use */

/* Analog/digital control capabilities */
#       define PCM_CAP_ANALOGOUT        0x00100000
#       define PCM_CAP_ANALOGIN         0x00200000
#       define PCM_CAP_DIGITALOUT       0x00400000
#       define PCM_CAP_DIGITALIN        0x00800000
#       define PCM_CAP_ADMASK           0x00f00000
/*
 * NOTE! (capabilities & PCM_CAP_ADMASK)==0 means just that the
 * digital/analog interface control features are not supported by the 
 * device/driver. However the device still supports analog, digital or
 * both inputs/outputs (depending on the device). See the OSS Programmer's
 * Guide for full details.
 */
#       define PCM_CAP_SPECIAL          0x01000000      /* Not for ordinary "multimedia" use */
#       define PCM_CAP_SHADOW           0x00000000      /* OBSOLETE */

/*
 * Preferred channel usage. These bits can be used to
 * give recommendations to the application. Used by few drivers.
 * For example if ((caps & DSP_CH_MASK) == DSP_CH_MONO) means that
 * the device works best in mono mode. However it doesn't necessarily mean
 * that the device cannot be used in stereo. These bits should only be used
 * by special applications such as multi track hard disk recorders to find
 * out the initial setup. However the user should be able to override this
 * selection.
 *
 * To find out which modes are actually supported the application should 
 * try to select them using SNDCTL_DSP_CHANNELS.
 */
#       define DSP_CH_MASK              0x06000000      /* Mask */
#       define DSP_CH_ANY               0x00000000      /* No preferred mode */
#       define DSP_CH_MONO              0x02000000
#       define DSP_CH_STEREO            0x04000000
#       define DSP_CH_MULTI             0x06000000      /* More than two channels */

#       define PCM_CAP_HIDDEN           0x08000000      /* Hidden device */
#       define PCM_CAP_FREERATE         0x10000000
#       define PCM_CAP_MODEM            0x20000000      /* Modem device */
#       define PCM_CAP_DEFAULT          0x40000000      /* "Default" device */

/*
 * The PCM_CAP_* capability names were known as DSP_CAP_* prior OSS 4.0
 * so it's necessary to define the older names too.
 */
#define DSP_CAP_ADMASK          PCM_CAP_ADMASK
#define DSP_CAP_ANALOGIN        PCM_CAP_ANALOGIN
#define DSP_CAP_ANALOGOUT       PCM_CAP_ANALOGOUT
#define DSP_CAP_BATCH           PCM_CAP_BATCH
#define DSP_CAP_BIND            PCM_CAP_BIND
#define DSP_CAP_COPROC          PCM_CAP_COPROC
#define DSP_CAP_DEFAULT         PCM_CAP_DEFAULT
#define DSP_CAP_DIGITALIN       PCM_CAP_DIGITALIN
#define DSP_CAP_DIGITALOUT      PCM_CAP_DIGITALOUT
#define DSP_CAP_DUPLEX          PCM_CAP_DUPLEX
#define DSP_CAP_FREERATE        PCM_CAP_FREERATE
#define DSP_CAP_HIDDEN          PCM_CAP_HIDDEN
#define DSP_CAP_INPUT           PCM_CAP_INPUT
#define DSP_CAP_MMAP            PCM_CAP_MMAP
#define DSP_CAP_MODEM           PCM_CAP_MODEM
#define DSP_CAP_MULTI           PCM_CAP_MULTI
#define DSP_CAP_OUTPUT          PCM_CAP_OUTPUT
#define DSP_CAP_REALTIME        PCM_CAP_REALTIME
#define DSP_CAP_REVISION        PCM_CAP_REVISION
#define DSP_CAP_SHADOW          PCM_CAP_SHADOW
#define DSP_CAP_TRIGGER         PCM_CAP_TRIGGER
#define DSP_CAP_VIRTUAL         PCM_CAP_VIRTUAL

#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
{
  unsigned 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_SETSYNCRO            __SIO  ('P', 21)
#define SNDCTL_DSP_SETDUPLEX            __SIO  ('P', 22)

#define SNDCTL_DSP_PROFILE              __SIOW ('P', 23, int)   /* OBSOLETE */
#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 SNDCTL_DSP_GETODELAY            __SIOR ('P', 23, int)

typedef struct audio_errinfo
{
  int play_underruns;
  int rec_overruns;
  unsigned int play_ptradjust;
  unsigned int rec_ptradjust;
  int play_errorcount;
  int rec_errorcount;
  int play_lasterror;
  int rec_lasterror;
  int play_errorparm;
  int rec_errorparm;
  int filler[16];
} audio_errinfo;

#define SNDCTL_DSP_GETPLAYVOL           __SIOR ('P', 24, int)
#define SNDCTL_DSP_SETPLAYVOL           __SIOWR('P', 24, int)
#define SNDCTL_DSP_GETERROR             __SIOR ('P', 25, audio_errinfo)
/*
 ****************************************************************************
 * Digital interface (S/PDIF) control interface
 */

typedef struct oss_digital_control
{
  unsigned int caps;
#define DIG_CBITIN_NONE                 0x00000000
#define DIG_CBITIN_LIMITED              0x00000001
#define DIG_CBITIN_DATA                 0x00000002
#define DIG_CBITIN_BYTE0                0x00000004
#define DIG_CBITIN_FULL                 0x00000008
#define DIG_CBITIN_MASK                 0x0000000f
#define DIG_CBITOUT_NONE                0x00000000
#define DIG_CBITOUT_LIMITED             0x00000010
#define DIG_CBITOUT_BYTE0               0x00000020
#define DIG_CBITOUT_FULL                0x00000040
#define DIG_CBITOUT_DATA                0x00000080
#define DIG_CBITOUT_MASK                0x000000f0
#define DIG_UBITIN                      0x00000100
#define DIG_UBITOUT                     0x00000200
#define DIG_VBITOUT                     0x00000400
#define DIG_OUTRATE                     0x00000800
#define DIG_INRATE                      0x00001000
#define DIG_INBITS                      0x00002000
#define DIG_OUTBITS                     0x00004000
#define DIG_EXACT                       0x00010000
#define DIG_PRO                         0x00020000
#define DIG_CONSUMER                    0x00040000
#define DIG_PASSTHROUGH                 0x00080000
#define DIG_OUTSEL                      0x00100000

  unsigned int valid;
#define VAL_CBITIN                      0x00000001
#define VAL_UBITIN                      0x00000002
#define VAL_CBITOUT                     0x00000004
#define VAL_UBITOUT                     0x00000008
#define VAL_ISTATUS                     0x00000010
#define VAL_IRATE                       0x00000020
#define VAL_ORATE                       0x00000040
#define VAL_INBITS                      0x00000080
#define VAL_OUTBITS                     0x00000100
#define VAL_REQUEST                     0x00000200
#define VAL_OUTSEL                      0x00000400

#define VAL_OUTMASK (VAL_CBITOUT|VAL_UBITOUT|VAL_ORATE|VAL_OUTBITS|VAL_OUTSEL)

  unsigned int request, param;
#define SPD_RQ_PASSTHROUGH                              1

  unsigned char cbitin[24];
  unsigned char ubitin[24];
  unsigned char cbitout[24];
  unsigned char ubitout[24];

  unsigned int outsel;
#define OUTSEL_DIGITAL          1
#define OUTSEL_ANALOG           2
#define OUTSEL_BOTH             (OUTSEL_DIGITAL|OUTSEL_ANALOG)

  int in_data;                  /* Audio/data if autodetectable by the receiver */
#define IND_UNKNOWN             0
#define IND_AUDIO               1
#define IND_DATA                2

  int in_locked;                /* Receiver locked */
#define LOCK_NOT_INDICATED      0
#define LOCK_UNLOCKED           1
#define LOCK_LOCKED             2

  int in_quality;               /* Input signal quality */
#define IN_QUAL_NOT_INDICATED   0
#define IN_QUAL_POOR            1
#define IN_QUAL_GOOD            2

  int in_vbit, out_vbit;        /* V bits */
#define VBIT_NOT_INDICATED      0
#define VBIT_OFF                1
#define VBIT_ON                 2

  unsigned int in_errors;       /* Various input error conditions */
#define INERR_CRC               0x0001
#define INERR_QCODE_CRC         0x0002
#define INERR_PARITY            0x0004
#define INERR_BIPHASE           0x0008

  int srate_in, srate_out;
  int bits_in, bits_out;

  int filler[32];
} oss_digital_control;

#define SNDCTL_DSP_READCTL              __SIOWR('P', 26, oss_digital_control)
#define SNDCTL_DSP_WRITECTL             __SIOWR('P', 27, oss_digital_control)

/*
 ****************************************************************************
 * Sync groups for audio devices
 */
typedef struct oss_syncgroup
{
  int id;
  int mode;
  int filler[16];
} oss_syncgroup;

#define SNDCTL_DSP_SYNCGROUP            __SIOWR('P', 28, oss_syncgroup)
#define SNDCTL_DSP_SYNCSTART            __SIOW ('P', 29, int)

/*
 **************************************************************************
 * "cooked" mode enables software based conversions for sample rate, sample
 * format (bits) and number of channels (mono/stereo). These conversions are
 * required with some devices that support only one sample rate or just stereo
 * to let the applications to use other formats. The cooked mode is enabled by
 * default. However it's necessary to disable this mode when mmap() is used or
 * when very deterministic timing is required. SNDCTL_DSP_COOKEDMODE is an
 * optional call introduced in OSS 3.9.6f. It's _error return must be ignored_
 * since normally this call will return erno=EINVAL.
 *
 * SNDCTL_DSP_COOKEDMODE must be called immediately after open before doing
 * anything else. Otherwise the call will not have any effect.
 */
#define SNDCTL_DSP_COOKEDMODE           __SIOW ('P', 30, int)

/*
 **************************************************************************
 * SNDCTL_DSP_SILENCE and SNDCTL_DSP_SKIP are new calls in OSS 3.99.0
 * that can be used to implement pause/continue during playback (no effect
 * on recording).
 */
#define SNDCTL_DSP_SILENCE              __SIO  ('P', 31)
#define SNDCTL_DSP_SKIP                 __SIO  ('P', 32)
/*
 ****************************************************************************
 * Abort transfer (reset) functions for input and output
 */
#define SNDCTL_DSP_HALT_INPUT           __SIO  ('P', 33)
#define SNDCTL_DSP_RESET_INPUT  SNDCTL_DSP_HALT_INPUT   /* Old name */
#define SNDCTL_DSP_HALT_OUTPUT          __SIO  ('P', 34)
#define SNDCTL_DSP_RESET_OUTPUT SNDCTL_DSP_HALT_OUTPUT  /* Old name */
/*
 ****************************************************************************
 * Low water level control
 */
#define SNDCTL_DSP_LOW_WATER            __SIOW ('P', 34, int)

/*
 ****************************************************************************
 * 64 bit pointer support. Only available in environments that support
 * the 64 bit (long long) integer type.
 */
#ifndef OSS_NO_LONG_LONG
typedef struct
{
  long long samples;
  int fifo_samples;
  int filler[32];               /* For future use */
} oss_count_t;

#define SNDCTL_DSP_CURRENT_IPTR         __SIOR ('P', 35, oss_count_t)
#define SNDCTL_DSP_CURRENT_OPTR         __SIOR ('P', 36, oss_count_t)
#endif

/*
 ****************************************************************************
 * Interface for selecting recording sources and playback output routings.
 */
#define SNDCTL_DSP_GET_RECSRC_NAMES     __SIOR ('P', 37, oss_mixer_enuminfo)
#define SNDCTL_DSP_GET_RECSRC           __SIOR ('P', 38, int)
#define SNDCTL_DSP_SET_RECSRC           __SIOWR('P', 38, int)

#define SNDCTL_DSP_GET_PLAYTGT_NAMES    __SIOR ('P', 39, oss_mixer_enuminfo)
#define SNDCTL_DSP_GET_PLAYTGT          __SIOR ('P', 40, int)
#define SNDCTL_DSP_SET_PLAYTGT          __SIOWR('P', 40, int)
#define SNDCTL_DSP_GETRECVOL            __SIOR ('P', 41, int)
#define SNDCTL_DSP_SETRECVOL            __SIOWR('P', 41, int)

/*
 ***************************************************************************
 * Some calls for setting the channel assignment with multi channel devices
 * (see the manual for details).
 */
#ifndef OSS_NO_LONG_LONG
#define SNDCTL_DSP_GET_CHNORDER         __SIOR ('P', 42, unsigned long long)
#define SNDCTL_DSP_SET_CHNORDER         __SIOWR('P', 42, unsigned long long)
#       define CHID_UNDEF       0
#       define CHID_L           1
#       define CHID_R           2
#       define CHID_C           3
#       define CHID_LFE         4
#       define CHID_LS          5
#       define CHID_RS          6
#       define CHID_LR          7
#       define CHID_RR          8
#define CHNORDER_UNDEF          0x0000000000000000ULL
#define CHNORDER_NORMAL         0x0000000087654321ULL
#endif

#define MAX_PEAK_CHANNELS       128
typedef unsigned short oss_peaks_t[MAX_PEAK_CHANNELS];
#define SNDCTL_DSP_GETIPEAKS            __SIOR('P', 43, oss_peaks_t)
#define SNDCTL_DSP_GETOPEAKS            __SIOR('P', 44, oss_peaks_t)

#define SNDCTL_DSP_POLICY               __SIOW('P', 45, int)    /* See the manual */

/*
 ****************************************************************************
 * Few ioctl calls that are not official parts of OSS. They have been used
 * by few freeware implementations of OSS.
 */
#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 DSP_BIND_REAR            0x00000200

#ifdef sun
/* Not part of OSS. Reserved for internal use by Solaris */
#define X_SADA_GET_PLAYTGT_MASK __SIOR ('P', 66, int)
#define X_SADA_GET_PLAYTGT      __SIOR ('P', 67, int)
#define X_SADA_SET_PLAYTGT      __SIOWR('P', 68, int)
#endif

#ifndef NO_LEGACY_MIXER
/*
 ****************************************************************************
 * IOCTL commands for the "legacy " /dev/mixer API (obsolete)
 *
 * Mixer controls
 *
 * 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.
 *
 * {!notice This "legacy" mixer API is obsolete. It has been superceded
 * by a new one (see below).
 */

#define SOUND_MIXER_NRDEVICES   28
#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 */
/* 
 * Some soundcards have three line level inputs (line, aux1 and aux2). 
 * Since each card manufacturer has assigned different meanings to 
 * these inputs, it's impractical to assign specific meanings 
 * (eg 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  (aux3) */
#define SOUND_MIXER_DIGITAL1    17      /* Digital I/O 1 */
#define SOUND_MIXER_DIGITAL2    18      /* Digital I/O 2 */
#define SOUND_MIXER_DIGITAL3    19      /* Digital I/O 3 */
#define SOUND_MIXER_PHONE       20      /* Phone */
#define SOUND_MIXER_MONO        21      /* Mono Output */
#define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
#define SOUND_MIXER_RADIO       23      /* Radio in */
#define SOUND_MIXER_DEPTH       24      /* Surround depth */
#define SOUND_MIXER_REARVOL     25      /* Rear/Surround speaker vol */
#define SOUND_MIXER_CENTERVOL   26      /* Center/LFE speaker vol */
#define SOUND_MIXER_SIDEVOL     27      /* Side-Surround (8speaker) vol */

/*
 * Warning: SOUND_MIXER_SURRVOL is an old name of SOUND_MIXER_SIDEVOL.
 *          They are both assigned to the same mixer control. Don't
 *          use both control names in the same program/driver.
 */
#define SOUND_MIXER_SURRVOL     SOUND_MIXER_SIDEVOL

/* 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 ", "Treble", "Synth", "Pcm  ", "Speaker ", "Line ", \
         "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
         "Aux1", "Aux2", "Aux3", "Digital1", "Digital2", "Digital3", \
         "Phone", "Mono", "Video", "Radio", "Depth", \
         "Rear", "Center", "Side"}

#define SOUND_DEVICE_NAMES \
        {"vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
         "mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
         "aux1", "aux2", "aux3", "dig1", "dig2", "dig3", \
         "phone", "mono", "video", "radio", "depth", \
         "rear", "center", "side"}

/*      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_CAP_NOLEGACY       0x00000004      /* For internal use only */
#       define SOUND_CAP_NORECSRC       0x00000008
#define SOUND_MIXER_STEREODEVS  0xfb    /* Mixer channels supporting stereo */

/* OSS/Free ONLY */
#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 */
/* OSS/Free ONLY */

/*      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_MONO         (1 << SOUND_MIXER_MONO)
#define SOUND_MASK_PHONE        (1 << SOUND_MIXER_PHONE)
#define SOUND_MASK_RADIO        (1 << SOUND_MIXER_RADIO)
#define SOUND_MASK_VIDEO        (1 << SOUND_MIXER_VIDEO)
#define SOUND_MASK_DEPTH        (1 << SOUND_MIXER_DEPTH)
#define SOUND_MASK_REARVOL      (1 << SOUND_MIXER_REARVOL)
#define SOUND_MASK_CENTERVOL    (1 << SOUND_MIXER_CENTERVOL)
#define SOUND_MASK_SIDEVOL      (1 << SOUND_MIXER_SIDEVOL)

/* Note! SOUND_MASK_SURRVOL is alias of SOUND_MASK_SIDEVOL */
#define SOUND_MASK_SURRVOL      (1 << SOUND_MIXER_SIDEVOL)

/* 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       /* OBSOLETE */
{
  char id[16];
  char name[32];
  int modify_counter;
  int fillers[10];
} mixer_info;

/* SOUND_MIXER_INFO is obsolete - use SNDCTL_MIXERINFO instead */
#define SOUND_MIXER_INFO                __SIOR ('M', 101, mixer_info)

/*
 * Two ioctls for special souncard function (OSS/Free only)
 */
#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)

/* The following two controls were never implemented and they should not be used. */
#define SOUND_MIXER_READ_MAINVOL                __SIOR ('M', 116, int)
#define SOUND_MIXER_WRITE_MAINVOL               __SIOWR('M', 116, 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 by the driver software 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)

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

/*
 * Calls to set/get the recording gain for the currently active
 * recording source. These calls automatically map to the right control.
 * Note that these calls are not supported by all drivers. In this case
 * the call will return -1 with errno set to EINVAL
 *
 * The _MONGAIN work in similar way but set/get the monitoring gain for
 * the currently selected recording source.
 */
#define SOUND_MIXER_READ_RECGAIN        __SIOR ('M', 119, int)
#define SOUND_MIXER_WRITE_RECGAIN       __SIOWR('M', 119, int)
#define SOUND_MIXER_READ_MONGAIN        __SIOR ('M', 120, int)
#define SOUND_MIXER_WRITE_MONGAIN       __SIOWR('M', 120, int)

/* The following call is for driver development time purposes. It's not
 * present in any released drivers.
 */
typedef unsigned char oss_reserved_t[512];
#define SOUND_MIXER_RESERVED            __SIOWR('M', 121, oss_reserved_t)
#endif /* ifndef NO_LEGACY_MIXER */

/*
 *************************************************************************
 * The "new" mixer API of OSS 4.0 and later.
 *
 * This improved mixer API makes it possible to access every possible feature
 * of every possible device. However you should read the mixer programming
 * section of the OSS API Developer's Manual. There is no chance that you
 * could use this interface correctly just by examining this header.
 */

typedef struct oss_sysinfo
{
  char product[32];             /* For example OSS/Free, OSS/Linux or OSS/Solaris */
  char version[32];             /* For example 4.0a */
  int versionnum;               /* See OSS_GETVERSION */
  char options[128];            /* Reserved */

  int numaudios;                /* # of audio/dsp devices */
  int openedaudio[8];           /* Bit mask telling which audio devices are busy */

  int numsynths;                /* # of availavle synth devices */
  int nummidis;                 /* # of available MIDI ports */
  int numtimers;                /* # of available timer devices */
  int nummixers;                /* # of mixer devices */

  int openedmidi[8];            /* Bit mask telling which midi devices are busy */
  int numcards;                 /* Number of sound cards in the system */
  int numaudioengines;          /* Number of audio engines in the system */
  char license[16];             /* For example "GPL" or "CDDL" */
  char revision_info[256];      /* For internal use */
  int filler[172];              /* For future expansion */
} oss_sysinfo;

typedef struct oss_mixext
{
  int dev;                      /* Mixer device number */
  int ctrl;                     /* Controller number */
  int type;                     /* Entry type */
#       define MIXT_DEVROOT      0      /* Device root entry */
#       define MIXT_GROUP        1      /* Controller group */
#       define MIXT_ONOFF        2      /* OFF (0) or ON (1) */
#       define MIXT_ENUM         3      /* Enumerated (0 to maxvalue) */
#       define MIXT_MONOSLIDER   4      /* Mono slider (0 to 255) */
#       define MIXT_STEREOSLIDER 5      /* Stereo slider (dual 0 to 255) */
#       define MIXT_MESSAGE      6      /* (Readable) textual message */
#       define MIXT_MONOVU       7      /* VU meter value (mono) */
#       define MIXT_STEREOVU     8      /* VU meter value (stereo) */
#       define MIXT_MONOPEAK     9      /* VU meter peak value (mono) */
#       define MIXT_STEREOPEAK  10      /* VU meter peak value (stereo) */
#       define MIXT_RADIOGROUP  11      /* Radio button group */
#       define MIXT_MARKER      12      /* Separator between normal and extension entries */
#       define MIXT_VALUE       13      /* Decimal value entry */
#       define MIXT_HEXVALUE    14      /* Hexadecimal value entry */
#       define MIXT_MONODB      15      /* OBSOLETE */
#       define MIXT_STEREODB    16      /* OBSOLETE */
#       define MIXT_SLIDER      17      /* Slider (mono) with full (31 bit) postitive integer range */
#       define MIXT_3D          18

/*
 * Sliders with range expanded to 15 bits per channel (0-32767)
 */
#       define MIXT_MONOSLIDER16        19
#       define MIXT_STEREOSLIDER16      20
#       define MIXT_MUTE        21      /* Mute=1, unmute=0 */

  /**************************************************************/

  /* Possible value range (minvalue to maxvalue) */
  /* Note that maxvalue may also be smaller than minvalue */
  int maxvalue;
  int minvalue;

  int flags;
#       define MIXF_READABLE    0x00000001      /* Has readable value */
#       define MIXF_WRITEABLE   0x00000002      /* Has writeable value */
#       define MIXF_POLL        0x00000004      /* May change itself */
#       define MIXF_HZ          0x00000008      /* Herz scale */
#       define MIXF_STRING      0x00000010      /* Use dynamic extensions for value */
#       define MIXF_DYNAMIC     0x00000010      /* Supports dynamic extensions */
#       define MIXF_OKFAIL      0x00000020      /* Interpret value as 1=OK, 0=FAIL */
#       define MIXF_FLAT        0x00000040      /* Flat vertical space requirements */
#       define MIXF_LEGACY      0x00000080      /* Legacy mixer control group */
#       define MIXF_CENTIBEL    0x00000100      /* Centibel (0.1 dB) step size */
#       define MIXF_DECIBEL     0x00000200      /* Step size of 1 dB */
#       define MIXF_MAINVOL     0x00000400      /* Main volume control */
#       define MIXF_PCMVOL      0x00000800      /* PCM output volume control */
#       define MIXF_RECVOL      0x00001000      /* PCM recording volume control */
#       define MIXF_MONVOL      0x00002000      /* Input->output monitor volume */
#       define MIXF_WIDE        0x00004000      /* Enum control has wide labels */
#       define MIXF_DESCR       0x00008000      /* Description (tooltip) available */
  oss_id_t id;                  /* Mnemonic ID (mainly for internal use) */
  int parent;                   /* Entry# of parent (group) node (-1 if root) */

  int dummy;                    /* Internal use */

  int timestamp;

  char data[64];                /* Misc data (entry type dependent) */
  unsigned char enum_present[32];       /* Mask of allowed enum values */
  int control_no;               /* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
  /* (-1 means not indicated) */

/*
 * The desc field is reserved for internal purposes of OSS. It should not be 
 * used by applications.
 */
  unsigned int desc;
#define MIXEXT_SCOPE_MASK                       0x0000003f
#define MIXEXT_SCOPE_OTHER                      0x00000000
#define MIXEXT_SCOPE_INPUT                      0x00000001
#define MIXEXT_SCOPE_OUTPUT                     0x00000002
#define MIXEXT_SCOPE_MONITOR                    0x00000003
#define MIXEXT_SCOPE_RECSWITCH                  0x00000004

  char extname[32];
  int update_counter;
  int rgbcolor;         /* 0 means default color (not black) . Otherwise 24 bit RGB color */
  int filler[6];
} oss_mixext;

/*
 * Recommended colors to be used in the rgbcolor field. These match the
 * colors used as the audio jack colors in HD audio motherboards.
 */
#define OSS_RGB_BLUE    0x7aabde                /* Light blue */
#define OSS_RGB_GREEN   0xb3c98c                /* Lime green */
#define OSS_RGB_PINK    0xe88c99
#define OSS_RGB_GRAY    0xd1ccc4
#define OSS_RGB_BLACK   0x2b2926                /* Light black */
#define OSS_RGB_ORANGE  0xe89e47
#define OSS_RGB_RED     0xff0000
#define OSS_RGB_YELLOW  0xffff00
#define OSS_RGB_PURPLE  0x800080
#define OSS_RGB_WHITE   0xf8f8ff

typedef struct oss_mixext_root
{
  oss_id_t id;
  char name[48];
} oss_mixext_root;

typedef struct oss_mixer_value
{
  int dev;
  int ctrl;
  int value;
  int flags;                    /* Reserved for future use. Initialize to 0 */
  int timestamp;                /* Must be set to oss_mixext.timestamp */
  int filler[8];                /* Reserved for future use. Initialize to 0 */
} oss_mixer_value;

#define OSS_ENUM_MAXVALUE       255
#define OSS_ENUM_STRINGSIZE     3000
typedef struct oss_mixer_enuminfo
{
  int dev;
  int ctrl;
  int nvalues;
  int version;                  /* Read the manual */
  short strindex[OSS_ENUM_MAXVALUE];
  char strings[OSS_ENUM_STRINGSIZE];
} oss_mixer_enuminfo;

#define OPEN_READ       PCM_ENABLE_INPUT
#define OPEN_WRITE      PCM_ENABLE_OUTPUT
#define OPEN_READWRITE  (OPEN_READ|OPEN_WRITE)

typedef struct oss_audioinfo
{
  int dev;                      /* Audio device number */
  oss_devname_t name;
  int busy;                     /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
  int pid;
  int caps;                     /* PCM_CAP_INPUT, PCM_CAP_OUTPUT */
  int iformats, oformats;
  int magic;                    /* Reserved for internal use */
  oss_cmd_t cmd;                /* Command using the device (if known) */
  int card_number;
  int port_number;
  int mixer_dev;
  int legacy_device;            /* Obsolete field. Replaced by devnode */
  int enabled;                  /* 1=enabled, 0=device not ready at this moment */
  int flags;                    /* For internal use only - no practical meaning */
  int min_rate, max_rate;       /* Sample rate limits */
  int min_channels, max_channels;       /* Number of channels supported */
  int binding;                  /* DSP_BIND_FRONT, etc. 0 means undefined */
  int rate_source;
  oss_handle_t handle;
#define OSS_MAX_SAMPLE_RATES    20      /* Cannot be changed  */
  unsigned int nrates, rates[OSS_MAX_SAMPLE_RATES];     /* Please read the manual before using these */
  oss_longname_t song_name;     /* Song name (if given) */
  oss_label_t label;            /* Device label (if given) */
  int latency;                  /* In usecs, -1=unknown */
  oss_devnode_t devnode;        /* Device special file name (absolute path) */
  int next_play_engine;         /* Read the documentation for more info */
  int next_rec_engine;          /* Read the documentation for more info */
  int filler[184];
} oss_audioinfo;

typedef struct oss_mixerinfo
{
  int dev;
  oss_id_t id;
  char name[32];                /* oss_devname_t is better, but may break compat */
  int modify_counter;
  int card_number;
  int port_number;
  oss_handle_t handle;
  int magic;                    /* Reserved */
  int enabled;
  int caps;
#define MIXER_CAP_VIRTUAL       0x00000001
#define MIXER_CAP_LAYOUT_B      0x00000002      /* For internal use only */
#define MIXER_CAP_NARROW        0x00000004      /* Conserve horiz space */
  int flags;                    /* Reserved */
  int nrext;
  /*
   * The priority field can be used to select the default (motherboard)
   * mixer device. The mixer with the highest priority is the
   * most preferred one. -2 or less means that this device cannot be used
   * as the default mixer.
   */
  int priority;
  oss_devnode_t devnode;        /* Device special file name (absolute path) */
  int legacy_device;
  int filler[245];              /* Reserved */
} oss_mixerinfo;

typedef struct oss_midi_info
{
  int dev;                      /* Midi device number */
  oss_devname_t name;
  int busy;                     /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
  int pid;
  oss_cmd_t cmd;                /* Command using the device (if known) */
  int caps;
#define MIDI_CAP_MPU401         0x00000001      /**** OBSOLETE ****/
#define MIDI_CAP_INPUT          0x00000002
#define MIDI_CAP_OUTPUT         0x00000004
#define MIDI_CAP_INOUT          (MIDI_CAP_INPUT|MIDI_CAP_OUTPUT)
#define MIDI_CAP_VIRTUAL        0x00000008      /* Pseudo device */
#define MIDI_CAP_MTCINPUT       0x00000010      /* Supports SNDCTL_MIDI_MTCINPUT */
#define MIDI_CAP_CLIENT         0x00000020      /* Virtual client side device */
#define MIDI_CAP_SERVER         0x00000040      /* Virtual server side device */
#define MIDI_CAP_INTERNAL       0x00000080      /* Internal (synth) device */
#define MIDI_CAP_EXTERNAL       0x00000100      /* external (MIDI port) device */
#define MIDI_CAP_PTOP           0x00000200      /* Point to point link to one device */
#define MIDI_CAP_MTC            0x00000400      /* MTC/SMPTE (control) device */
  int magic;                    /* Reserved for internal use */
  int card_number;
  int port_number;
  int enabled;                  /* 1=enabled, 0=device not ready at this moment */
  int flags;                    /* For internal use only - no practical meaning */
  oss_handle_t handle;
  oss_longname_t song_name;     /* Song name (if known) */
  oss_label_t label;            /* Device label (if given) */
  int latency;                  /* In usecs, -1=unknown */
  oss_devnode_t devnode;        /* Device special file name (absolute path) */
  int legacy_device;            /* Legacy device mapping */
  int filler[235];
} oss_midi_info;

typedef struct oss_card_info
{
  int card;
  char shortname[16];
  char longname[128];
  int flags;
  char hw_info[400];
  int intr_count, ack_count;
  int filler[154];
} oss_card_info;

#define SNDCTL_SYSINFO          __SIOR ('X', 1, oss_sysinfo)
#define OSS_SYSINFO             SNDCTL_SYSINFO  /* Old name */

#define SNDCTL_MIX_NRMIX        __SIOR ('X', 2, int)
#define SNDCTL_MIX_NREXT        __SIOWR('X', 3, int)
#define SNDCTL_MIX_EXTINFO      __SIOWR('X', 4, oss_mixext)
#define SNDCTL_MIX_READ         __SIOWR('X', 5, oss_mixer_value)
#define SNDCTL_MIX_WRITE        __SIOWR('X', 6, oss_mixer_value)

#define SNDCTL_AUDIOINFO        __SIOWR('X', 7, oss_audioinfo)
#define SNDCTL_MIX_ENUMINFO     __SIOWR('X', 8, oss_mixer_enuminfo)
#define SNDCTL_MIDIINFO         __SIOWR('X', 9, oss_midi_info)
#define SNDCTL_MIXERINFO        __SIOWR('X',10, oss_mixerinfo)
#define SNDCTL_CARDINFO         __SIOWR('X',11, oss_card_info)
#define SNDCTL_ENGINEINFO       __SIOWR('X',12, oss_audioinfo)
#define SNDCTL_AUDIOINFO_EX     __SIOWR('X',13, oss_audioinfo)

#define SNDCTL_MIX_DESCRIPTION  __SIOWR('X',14, oss_mixer_enuminfo)

/*
 * SNDCTL_MIX_MATRIX_WRITE and SNDCTL_MIX_MATRIX_READ are private ioctl
 * calls that each driver can define in whatever way they like. They can
 * be used _ONLY_ by device specific utilities. Each driver can define
 * meaning of the fields of oss_mixermatrix_t as they like. This means
 * that applications using this interface will depend on the specific device.
 *
 * This interface can be used for example to implement a (GUI) tool that can 
 * set the signal routings of an on-board mixer matrix of some high end
 * audio card. The application (designer) must have complete understanding
 * of the device to be supported. The application will not be portable to any
 * other device.
 *
 * Applications using this interface must verify that the magic field
 * returned by SNDCTL_MIXERINFO matches the right device/driver.
 */
typedef struct
{
        int secret;     /* Initialize this to driver spcified secret value */
        int source, target;
        int function;
        int value;
        int options[16];
} oss_mixermatrix_t;

#define SNDCTL_MIX_MATRIX_WRITE __SIOWR('X',15, oss_mixermatrix_t)
#define SNDCTL_MIX_MATRIX_READ  __SIOWR('X',16, oss_mixermatrix_t)

/* ioctl codes 'X', 200-255 are reserved for internal use */

/*
 * Few more "globally" available ioctl calls.
 */
#define SNDCTL_SETSONG          __SIOW ('Y', 2, oss_longname_t)
#define SNDCTL_GETSONG          __SIOR ('Y', 2, oss_longname_t)
#define SNDCTL_SETNAME          __SIOW ('Y', 3, oss_longname_t)
#define SNDCTL_SETLABEL         __SIOW ('Y', 4, oss_label_t)
#define SNDCTL_GETLABEL         __SIOR ('Y', 4, oss_label_t)
/*
 * The "new" mixer API definitions end here.
 ***************************************
 */

/*
 *********************************************************
 * Few routines that are included in -lOSSlib
 *
 * At this moment this interface is not used. OSSlib contains just
 * stubs that call the related system calls directly.
 */
#ifdef OSSLIB
extern int osslib_open (const char *path, int flags, int dummy);
extern void osslib_close (int fd);
extern int osslib_write (int fd, const void *buf, int count);
extern int osslib_read (int fd, void *buf, int count);
extern int osslib_ioctl (int fd, unsigned int request, void *arg);
#else
#  define osslib_open   open
#  define osslib_close  close
#  define osslib_write  write
#  define osslib_read   read
#  define osslib_ioctl  ioctl
#endif

#if 1
#define SNDCTL_DSP_NONBLOCK             __SIO  ('P',14) /* Obsolete. Not supported any more */
#endif

#if 1
/*
 * Some obsolete macros that are not part of Open Sound System API.
 */
#define SOUND_PCM_READ_RATE             SOUND_PCM_READ_RATE_is_obsolete
#define SOUND_PCM_READ_BITS             SOUND_PCM_READ_BITS_is_obsolete
#define SOUND_PCM_READ_CHANNELS         SOUND_PCM_READ_CHANNELS_is_obsolete
#define SOUND_PCM_WRITE_RATE            SOUND_PCM_WRITE_RATE_is_obsolet_use_SNDCTL_DSP_SPEED_instead
#define SOUND_PCM_WRITE_CHANNELS        SOUND_PCM_WRITE_CHANNELS_is_obsolete_use_SNDCTL_DSP_CHANNELS_instead
#define SOUND_PCM_WRITE_BITS            SOUND_PCM_WRITE_BITS_is_obsolete_use_SNDCTL_DSP_SETFMT_instead
#define SOUND_PCM_POST                  SOUND_PCM_POST_is_obsolete_use_SNDCTL_DSP_POST_instead
#define SOUND_PCM_RESET                 SOUND_PCM_RESET_is_obsolete_use_SNDCTL_DSP_HALT_instead
#define SOUND_PCM_SYNC                  SOUND_PCM_SYNC_is_obsolete_use_SNDCTL_DSP_SYNC_instead
#define SOUND_PCM_SUBDIVIDE             SOUND_PCM_SUBDIVIDE_is_obsolete_use_SNDCTL_DSP_SUBDIVIDE_instead
#define SOUND_PCM_SETFRAGMENT           SOUND_PCM_SETFRAGMENT_is_obsolete_use_SNDCTL_DSP_SETFRAGMENT_instead
#define SOUND_PCM_GETFMTS               SOUND_PCM_GETFMTS_is_obsolete_use_SNDCTL_DSP_GETFMTS_instead
#define SOUND_PCM_SETFMT                SOUND_PCM_SETFMT_is_obsolete_use_SNDCTL_DSP_SETFMT_instead
#define SOUND_PCM_GETOSPACE             SOUND_PCM_GETOSPACE_is_obsolete_use_SNDCTL_DSP_GETOSPACE_instead
#define SOUND_PCM_GETISPACE             SOUND_PCM_GETISPACE_is_obsolete_use_SNDCTL_DSP_GETISPACE_instead
#define SOUND_PCM_NONBLOCK              SOUND_PCM_NONBLOCK_is_obsolete_use_SNDCTL_DSP_NONBLOCK_instead
#define SOUND_PCM_GETCAPS               SOUND_PCM_GETCAPS_is_obsolete_use_SNDCTL_DSP_GETCAPS_instead
#define SOUND_PCM_GETTRIGGER            SOUND_PCM_GETTRIGGER_is_obsolete_use_SNDCTL_DSP_GETTRIGGER_instead
#define SOUND_PCM_SETTRIGGER            SOUND_PCM_SETTRIGGER_is_obsolete_use_SNDCTL_DSP_SETTRIGGER_instead
#define SOUND_PCM_SETSYNCRO             SOUND_PCM_SETSYNCRO_is_obsolete_use_SNDCTL_DSP_SETSYNCRO_instead
#define SOUND_PCM_GETIPTR               SOUND_PCM_GETIPTR_is_obsolete_use_SNDCTL_DSP_GETIPTR_instead
#define SOUND_PCM_GETOPTR               SOUND_PCM_GETOPTR_is_obsolete_use_SNDCTL_DSP_GETOPTR_instead
#define SOUND_PCM_MAPINBUF              SOUND_PCM_MAPINBUF_is_obsolete_use_SNDCTL_DSP_MAPINBUF_instead
#define SOUND_PCM_MAPOUTBUF             SOUND_PCM_MAPOUTBUF_is_obsolete_use_SNDCTL_DSP_MAPOUTBUF_instead
#endif

#endif

---