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soundcard.h
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soundcard.h
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#ifndef SOUNDCARD_H
#define SOUNDCARD_H
/*
* Copyright by Hannu Savolainen 1993-1999
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer. 2.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(__cplusplus)
#define EXTERNC extern "C"
#else
#define EXTERNC extern
#endif /* EXTERN_C_WRAPPERS */
/*
* 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 0x030902
#define OPEN_SOUND_SYSTEM
#if defined(__hpux) && !defined(_HPUX_SOURCE)
# error "-D_HPUX_SOURCE must be used when compiling OSS applications"
#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
/*
* 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
/* Soundcard numbers 27 to N are reserved. Don't add more numbers here */
/***********************************
* IOCTL Commands for /dev/sequencer
*/
#ifndef __SIOWR
#if defined(__hpux) || (defined(_IOWR) && (defined(_AIX) || (!defined(sun) && !defined(sparc) && !defined(__INCioctlh) && !defined(__Lynx__))))
/* Use already defined ioctl defines if they exist (except with Sun and some others) */
#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))
#define __SIOWR(x,y,t) ((int)(SIOC_INOUT|((sizeof(t)&SIOCPARM_MASK)<<16)|(x<<8)|y))
#define __SIOC_SIZE(x) ((x>>16)&SIOCPARM_MASK)
#define __SIOC_DIR(x) (x & 0xf0000000)
#define __SIOC_NONE SIOC_VOID
#define __SIOC_READ SIOC_OUT
#define __SIOC_WRITE SIOC_IN
# endif /* _IOWR */
#endif /* !__SIOWR */
#define SNDCTL_SEQ_RESET __SIO ('Q', 0)
#define SNDCTL_SEQ_SYNC __SIO ('Q', 1)
#define SNDCTL_SYNTH_INFO __SIOWR('Q', 2, struct synth_info)
#define SNDCTL_SEQ_CTRLRATE __SIOWR('Q', 3, int) /* Set/get timer resolution (HZ) */
#define SNDCTL_SEQ_GETOUTCOUNT __SIOR ('Q', 4, int)
#define SNDCTL_SEQ_GETINCOUNT __SIOR ('Q', 5, int)
#define SNDCTL_SEQ_PERCMODE __SIOW ('Q', 6, int)
#define SNDCTL_FM_LOAD_INSTR __SIOW ('Q', 7, struct sbi_instrument) /* Obsolete. Don't use!!!!!! */
#define SNDCTL_SEQ_TESTMIDI __SIOW ('Q', 8, int)
#define SNDCTL_SEQ_RESETSAMPLES __SIOW ('Q', 9, int)
#define SNDCTL_SEQ_NRSYNTHS __SIOR ('Q',10, int)
#define SNDCTL_SEQ_NRMIDIS __SIOR ('Q',11, int)
#define SNDCTL_MIDI_INFO __SIOWR('Q',12, struct midi_info)
#define SNDCTL_SEQ_THRESHOLD __SIOW ('Q',13, int)
#define SNDCTL_SYNTH_MEMAVL __SIOWR('Q',14, int) /* in=dev#, out=memsize */
#define SNDCTL_FM_4OP_ENABLE __SIOW ('Q',15, int) /* in=dev# */
#define SNDCTL_SEQ_PANIC __SIO ('Q',17)
#define SNDCTL_SEQ_OUTOFBAND __SIOW ('Q',18, struct seq_event_rec)
#define SNDCTL_SEQ_GETTIME __SIOR ('Q',19, int)
#define SNDCTL_SYNTH_ID __SIOWR('Q',20, struct synth_info)
#define SNDCTL_SYNTH_CONTROL __SIOWR('Q',21, struct synth_control)
#define SNDCTL_SYNTH_REMOVESAMPLE __SIOWR('Q',22, struct remove_sample)
typedef struct synth_control
{
int devno; /* Synthesizer # */
char data[4000]; /* Device spesific command/data record */
}synth_control;
typedef struct remove_sample
{
int devno; /* Synthesizer # */
int bankno; /* MIDI bank # (0=General MIDI) */
int instrno; /* MIDI instrument number */
} remove_sample;
typedef struct seq_event_rec {
unsigned char arr[8];
} seq_event_rec;
#define SNDCTL_TMR_TIMEBASE __SIOWR('T', 1, int)
#define SNDCTL_TMR_START __SIO ('T', 2)
#define SNDCTL_TMR_STOP __SIO ('T', 3)
#define SNDCTL_TMR_CONTINUE __SIO ('T', 4)
#define SNDCTL_TMR_TEMPO __SIOWR('T', 5, int)
#define SNDCTL_TMR_SOURCE __SIOWR('T', 6, int)
# define TMR_INTERNAL 0x00000001
# define TMR_EXTERNAL 0x00000002
# define TMR_MODE_MIDI 0x00000010
# define TMR_MODE_FSK 0x00000020
# define TMR_MODE_CLS 0x00000040
# define TMR_MODE_SMPTE 0x00000080
#define SNDCTL_TMR_METRONOME __SIOW ('T', 7, int)
#define SNDCTL_TMR_SELECT __SIOW ('T', 8, int)
/*
* Some big endian/little endian handling macros
*/
#if defined(_AIX) || defined(AIX) || defined(sparc) || defined(__hppa) || defined(PPC)
/* 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
#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
#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.
*/
struct patch_info {
unsigned short key; /* Use WAVE_PATCH here */
#define WAVE_PATCH _PATCHKEY(0x04)
#define GUS_PATCH WAVE_PATCH
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 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
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 */
/* 32 bit formats (MSB aligned) formats */
# define AFMT_S32_LE 0x00001000
# define AFMT_S32_BE 0x00002000
/*
* 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 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_GETOUTVOL __SIOR ('P', 24, int)
#define SNDCTL_DSP_SETOUTVOL __SIOWR('P', 24, int)
/*
* 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
* preven's 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 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 */
/*
* The AD1848 codec and compatibles have three line level inputs
* (line, aux1 and aux2). Since each card manufacturer have assigned
* different meanings to these inputs, it's inpractical to assign
* specific meanings (line, cd, synth etc.) to them.
*/
#define SOUND_MIXER_LINE1 14 /* Input source 1 (aux1) */
#define SOUND_MIXER_LINE2 15 /* Input source 2 (aux2) */
#define SOUND_MIXER_LINE3 16 /* Input source 3 (line) */
#define SOUND_MIXER_DIGITAL1 17 /* Digital (input) 1 */
#define SOUND_MIXER_DIGITAL2 18 /* Digital (input) 2 */
#define SOUND_MIXER_DIGITAL3 19 /* Digital (input) 3 */
#define SOUND_MIXER_PHONEIN 20 /* Phone input */
#define SOUND_MIXER_PHONEOUT 21 /* Phone output */
#define SOUND_MIXER_VIDEO 22 /* Video/TV (audio) in */
#define SOUND_MIXER_RADIO 23 /* Radio in */
#define SOUND_MIXER_MONITOR 24 /* Monitor (usually mic) volume */
#define SOUND_MIXER_DEPTH 25 /* 3D "depth"/"space" parameter */
#define SOUND_MIXER_CENTER 26 /* 3D "center" parameter */
#define SOUND_MIXER_MIDI 27 /* Alternative for "synth" */
/* 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", \
"Depth", "Center", "MIDI"}
#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", \
"depth", "center", "midi"}
/* Device bitmask identifiers */
#define SOUND_MIXER_RECSRC 0xff /* Arg contains a bit for each recording source */
#define SOUND_MIXER_DEVMASK 0xfe /* Arg contains a bit for each supported device */
#define SOUND_MIXER_RECMASK 0xfd /* Arg contains a bit for each supported recording source */
#define SOUND_MIXER_CAPS 0xfc
# define SOUND_CAP_EXCL_INPUT 0x00000001 /* Only one recording source at a time */
#define SOUND_MIXER_STEREODEVS 0xfb /* Mixer channels supporting stereo */
/* Device mask bits */
#define SOUND_MASK_VOLUME (1 << SOUND_MIXER_VOLUME)
#define SOUND_MASK_BASS (1 << SOUND_MIXER_BASS)
#define SOUND_MASK_TREBLE (1 << SOUND_MIXER_TREBLE)
#define SOUND_MASK_SYNTH (1 << SOUND_MIXER_SYNTH)
#define SOUND_MASK_PCM (1 << SOUND_MIXER_PCM)
#define SOUND_MASK_SPEAKER (1 << SOUND_MIXER_SPEAKER)
#define SOUND_MASK_LINE (1 << SOUND_MIXER_LINE)
#define SOUND_MASK_MIC (1 << SOUND_MIXER_MIC)
#define SOUND_MASK_CD (1 << SOUND_MIXER_CD)
#define SOUND_MASK_IMIX (1 << SOUND_MIXER_IMIX)
#define SOUND_MASK_ALTPCM (1 << SOUND_MIXER_ALTPCM)
#define SOUND_MASK_RECLEV (1 << SOUND_MIXER_RECLEV)
#define SOUND_MASK_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)
#define SOUND_MASK_DEPTH (1 << SOUND_MIXER_DEPTH)
#define SOUND_MASK_CENTER (1 << SOUND_MIXER_CENTER)
#define SOUND_MASK_MIDI (1 << SOUND_MIXER_MIDI)
/* 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)
/*
* 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)
/*************************************************
* Extended mixer interface (OSS 4.0 and later) *
*************************************************/
#define SYSINFO_FILL_SIZE 256
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 filler[SYSINFO_FILL_SIZE];/* For future expansion (set to -1) */
} 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 100) */
# define MIXT_STEREOSLIDER 5 /* Stereo slider (dual 0 to 100) */
# 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 */
int maxvalue; /* Possible value range (0 to maxvalue) */
int flags;
# define MIXF_READABLE 0x00000001 /* Has readable value */
# define MIXF_WRITEABLE 0x00000002 /* Has writeable value */
char id[16]; /* Mnemonic ID (for linking with user space info) */