soundcard.h

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/*
 * soundcard.h
 */
 
/*-
 * Copyright by Hannu Savolainen 1993 / 4Front Technologies 1993-2006
 * Modified for the new FreeBSD sound driver by Luigi Rizzo, 1997
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer in the documentation and/or other materials provided
 *    with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/sys/soundcard.h,v 1.48 2006/11/26 11:55:48 netchild Exp $
 */
 
/*
 * Unless coordinating changes with 4Front Technologies, do NOT make any
 * modifications to ioctl commands, types, etc. that would break
 * compatibility with the OSS API.
 */
 
#ifndef _SYS_SOUNDCARD_H_
#define _SYS_SOUNDCARD_H_
 /*
  * If you make modifications to this file, please contact me before
  * distributing the modified version. There is already enough
  * diversity in the world.
  *
  * Regards,
  * Hannu Savolainen
  * hannu@voxware.pp.fi
  *
  **********************************************************************
  * PS. The Hacker's Guide to VoxWare available from
  *     nic.funet.fi:pub/Linux/ALPHA/sound. The file is
  *     snd-sdk-doc-0.1.ps.gz (gzipped postscript). It contains
  *     some useful information about programming with VoxWare.
  *     (NOTE! The pub/Linux/ALPHA/ directories are hidden. You have
  *     to cd inside them before the files are accessible.)
  **********************************************************************
  */
 
/*
 * SOUND_VERSION is only used by the voxware driver. Hopefully apps
 * should not depend on it, but rather look at the capabilities
 * of the driver in the kernel!
 */
#define SOUND_VERSION  301
#define VOXWARE         /* does this have any use ? */
 
/*
 * Supported card ID numbers (Should be somewhere else? We keep
 * them here just for compativility with the old driver, but these
 * constants are of little or no use).
 */
 
#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_AWE32          25
#define SNDCARD_NSS            26
#define SNDCARD_UART16550      27
#define SNDCARD_OPL            28
 
#include <sys/types.h>
#include <machine/endian.h>
#ifndef _IOWR
#include <sys/ioccom.h>
#endif  /* !_IOWR */
 
/*
 * The first part of this file contains the new FreeBSD sound ioctl
 * interface. Tries to minimize the number of different ioctls, and
 * to be reasonably general.
 *
 * 970821: some of the new calls have not been implemented yet.
 */
 
/*
 * the following three calls extend the generic file descriptor
 * interface. AIONWRITE is the dual of FIONREAD, i.e. returns the max
 * number of bytes for a write operation to be non-blocking.
 *
 * AIOGSIZE/AIOSSIZE are used to change the behaviour of the device,
 * from a character device (default) to a block device. In block mode,
 * (not to be confused with blocking mode) the main difference for the
 * application is that select() will return only when a complete
 * block can be read/written to the device, whereas in character mode
 * select will return true when one byte can be exchanged. For audio
 * devices, character mode makes select almost useless since one byte
 * will always be ready by the next sample time (which is often only a
 * handful of microseconds away).
 * Use a size of 0 or 1 to return to character mode.
 */
#define AIONWRITE   _IOR('A', 10, int)   /* get # bytes to write */
struct snd_size {
    int play_size;
    int rec_size;
};
#define AIOGSIZE    _IOR('A', 11, struct snd_size)/* read current blocksize */
#define AIOSSIZE    _IOWR('A', 11, struct snd_size)  /* sets blocksize */
 
/*
 * The following constants define supported audio formats. The
 * encoding follows voxware conventions, i.e. 1 bit for each supported
 * format. We extend it by using bit 31 (RO) to indicate full-duplex
 * capability, and bit 29 (RO) to indicate that the card supports/
 * needs different formats on capture & playback channels.
 * Bit 29 (RW) is used to indicate/ask stereo.
 *
 * The number of bits required to store the sample is:
 *  o  4 bits for the IDA ADPCM format,
 *  o  8 bits for 8-bit formats, mu-law and A-law,
 *  o  16 bits for the 16-bit formats, and
 *  o  32 bits for the 24/32-bit formats.
 *  o  undefined for the MPEG audio format.
 */
 
#define AFMT_QUERY      0x00000000      /* Return current format */
#define AFMT_MU_LAW     0x00000001      /* Logarithmic mu-law */
#define AFMT_A_LAW      0x00000002      /* Logarithmic A-law */
#define AFMT_IMA_ADPCM  0x00000004      /* A 4:1 compressed format where 16-bit
                                         * squence represented using the
                                         * the average 4 bits per sample */
#define AFMT_U8         0x00000008      /* Unsigned 8-bit */
#define AFMT_S16_LE     0x00000010      /* Little endian signed 16-bit */
#define AFMT_S16_BE     0x00000020      /* Big endian signed 16-bit */
#define AFMT_S8         0x00000040      /* Signed 8-bit */
#define AFMT_U16_LE     0x00000080      /* Little endian unsigned 16-bit */
#define AFMT_U16_BE     0x00000100      /* Big endian unsigned 16-bit */
#define AFMT_MPEG       0x00000200      /* MPEG MP2/MP3 audio */
#define AFMT_AC3        0x00000400      /* Dolby Digital AC3 */
 
#if _BYTE_ORDER == _LITTLE_ENDIAN
#define AFMT_S16_NE     AFMT_S16_LE     /* native endian signed 16 */
#else
#define AFMT_S16_NE     AFMT_S16_BE
#endif
 
/*
 * 32-bit formats below used for 24-bit audio data where the data is stored
 * in the 24 most significant bits and the least significant bits are not used
 * (should be set to 0).
 */
#define AFMT_S32_LE     0x00001000      /* Little endian signed 32-bit */
#define AFMT_S32_BE     0x00002000      /* Big endian signed 32-bit */
#define AFMT_U32_LE     0x00004000      /* Little endian unsigned 32-bit */
#define AFMT_U32_BE     0x00008000      /* Big endian unsigned 32-bit */
#define AFMT_S24_LE     0x00010000      /* Little endian signed 24-bit */
#define AFMT_S24_BE     0x00020000      /* Big endian signed 24-bit */
#define AFMT_U24_LE     0x00040000      /* Little endian unsigned 24-bit */
#define AFMT_U24_BE     0x00080000      /* Big endian unsigned 24-bit */
 
#define AFMT_STEREO     0x10000000      /* can do/want stereo   */
 
/*
 * the following are really capabilities
 */
#define AFMT_WEIRD      0x20000000      /* weird hardware...    */
    /*
     * AFMT_WEIRD reports that the hardware might need to operate
     * with different formats in the playback and capture
     * channels when operating in full duplex.
     * As an example, SoundBlaster16 cards only support U8 in one
     * direction and S16 in the other one, and applications should
     * be aware of this limitation.
     */
#define AFMT_FULLDUPLEX 0x80000000      /* can do full duplex   */
 
/*
 * The following structure is used to get/set format and sampling rate.
 * While it would be better to have things such as stereo, bits per
 * sample, endiannes, etc split in different variables, it turns out
 * that formats are not that many, and not all combinations are possible.
 * So we followed the Voxware approach of associating one bit to each
 * format.
 */
 
typedef struct _snd_chan_param {
    u_long      play_rate;      /* sampling rate                        */
    u_long      rec_rate;       /* sampling rate                        */
    u_long      play_format;    /* everything describing the format     */
    u_long      rec_format;     /* everything describing the format     */
} snd_chan_param;
#define AIOGFMT    _IOR('f', 12, snd_chan_param)   /* get format */
#define AIOSFMT    _IOWR('f', 12, snd_chan_param)  /* sets format */
 
/*
 * The following structure is used to get/set the mixer setting.
 * Up to 32 mixers are supported, each one with up to 32 channels.
 */
typedef struct _snd_mix_param {
    u_char      subdev; /* which output                         */
    u_char      line;   /* which input                          */
    u_char      left,right; /* volumes, 0..255, 0 = mute        */
} snd_mix_param ;
 
/* XXX AIOGMIX, AIOSMIX not implemented yet */
#define AIOGMIX _IOWR('A', 13, snd_mix_param)   /* return mixer status */
#define AIOSMIX _IOWR('A', 14, snd_mix_param)   /* sets mixer status   */
 
/*
 * channel specifiers used in AIOSTOP and AIOSYNC
 */
#define AIOSYNC_PLAY    0x1     /* play chan */
#define AIOSYNC_CAPTURE 0x2     /* capture chan */
/* AIOSTOP stop & flush a channel, returns the residual count */
#define AIOSTOP _IOWR ('A', 15, int)
 
/* alternate method used to notify the sync condition */
#define AIOSYNC_SIGNAL  0x100
#define AIOSYNC_SELECT  0x200
 
/* what the 'pos' field refers to */
#define AIOSYNC_READY   0x400
#define AIOSYNC_FREE    0x800
 
typedef struct _snd_sync_parm {
    long chan ; /* play or capture channel, plus modifier */
    long pos;
} snd_sync_parm;
#define AIOSYNC _IOWR ('A', 15, snd_sync_parm)  /* misc. synchronization */
 
/*
 * The following is used to return device capabilities. If the structure
 * passed to the ioctl is zeroed, default values are returned for rate
 * and formats, a bitmap of available mixers is returned, and values
 * (inputs, different levels) for the first one are returned.
 *
 * If  formats, mixers, inputs are instantiated, then detailed info
 * are returned depending on the call.
 */
typedef struct _snd_capabilities {
    u_long      rate_min, rate_max;     /* min-max sampling rate */
    u_long      formats;
    u_long      bufsize; /* DMA buffer size */
    u_long      mixers; /* bitmap of available mixers */
    u_long      inputs; /* bitmap of available inputs (per mixer) */
    u_short     left, right;    /* how many levels are supported */
} snd_capabilities;
#define AIOGCAP _IOWR('A', 15, snd_capabilities)        /* get capabilities */
 
/*
 * here is the old (Voxware) ioctl interface
 */
 
/*
 * IOCTL Commands for /dev/sequencer
 */
 
#define SNDCTL_SEQ_RESET        _IO  ('Q', 0)
#define SNDCTL_SEQ_SYNC         _IO  ('Q', 1)
#define SNDCTL_SYNTH_INFO       _IOWR('Q', 2, struct synth_info)
#define SNDCTL_SEQ_CTRLRATE     _IOWR('Q', 3, int) /* Set/get timer res.(hz) */
#define SNDCTL_SEQ_GETOUTCOUNT  _IOR ('Q', 4, int)
#define SNDCTL_SEQ_GETINCOUNT   _IOR ('Q', 5, int)
#define SNDCTL_SEQ_PERCMODE     _IOW ('Q', 6, int)
#define SNDCTL_FM_LOAD_INSTR    _IOW ('Q', 7, struct sbi_instrument)    /* Valid for FM only */
#define SNDCTL_SEQ_TESTMIDI     _IOW ('Q', 8, int)
#define SNDCTL_SEQ_RESETSAMPLES _IOW ('Q', 9, int)
#define SNDCTL_SEQ_NRSYNTHS     _IOR ('Q',10, int)
#define SNDCTL_SEQ_NRMIDIS      _IOR ('Q',11, int)
#define SNDCTL_MIDI_INFO        _IOWR('Q',12, struct midi_info)
#define SNDCTL_SEQ_THRESHOLD    _IOW ('Q',13, int)
#define SNDCTL_SEQ_TRESHOLD     SNDCTL_SEQ_THRESHOLD    /* there was once a typo */
#define SNDCTL_SYNTH_MEMAVL     _IOWR('Q',14, int) /* in=dev#, out=memsize */
#define SNDCTL_FM_4OP_ENABLE    _IOW ('Q',15, int) /* in=dev# */
#define SNDCTL_PMGR_ACCESS      _IOWR('Q',16, struct patmgr_info)
#define SNDCTL_SEQ_PANIC        _IO  ('Q',17)
#define SNDCTL_SEQ_OUTOFBAND    _IOW ('Q',18, struct seq_event_rec)
#define SNDCTL_SEQ_GETTIME      _IOR ('Q',19, int)
 
struct seq_event_rec {
        u_char arr[8];
};
 
#define SNDCTL_TMR_TIMEBASE     _IOWR('T', 1, int)
#define SNDCTL_TMR_START        _IO  ('T', 2)
#define SNDCTL_TMR_STOP         _IO  ('T', 3)
#define SNDCTL_TMR_CONTINUE     _IO  ('T', 4)
#define SNDCTL_TMR_TEMPO        _IOWR('T', 5, int)
#define SNDCTL_TMR_SOURCE       _IOWR('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    _IOW ('T', 7, int)
#define SNDCTL_TMR_SELECT       _IOW ('T', 8, int)
 
/*
 *      Endian aware patch key generation algorithm.
 */
 
#if defined(_AIX) || defined(AIX)
#  define _PATCHKEY(id) (0xfd00|id)
#else
#  define _PATCHKEY(id) ((id<<8)|0xfd)
#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 {
/*              u_short key;             Use GUS_PATCH here */
        short key;               /* Use GUS_PATCH here */
#define GUS_PATCH       _PATCHKEY(0x04)
#define OBSOLETE_GUS_PATCH      _PATCHKEY(0x02)
 
        short device_no;        /* Synthesizer number */
        short instr_no;         /* Midi pgm# */
 
        u_long 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 */
                                /*      (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 */
/* Other bits must be zeroed */
 
        long len;       /* Size of the wave data in bytes */
        long 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.
 */
 
        u_int base_freq;
        u_long base_note;
        u_long high_note;
        u_long 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  */
        u_char  env_rate[ 6 ];   /* GUS HW ramping rate */
        u_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
         */
 
        u_char  tremolo_sweep;
        u_char  tremolo_rate;
        u_char  tremolo_depth;
 
        u_char  vibrato_sweep;
        u_char  vibrato_rate;
        u_char  vibrato_depth;
 
        int             scale_frequency;
        u_int   scale_factor;           /* from 0 to 2048 or 0 to 2 */
 
        int             volume;
        int             spare[4];
        char data[1];   /* The waveform data starts here */
};
 
struct sysex_info {
        short key;              /* Use GUS_PATCH here */
#define SYSEX_PATCH     _PATCHKEY(0x05)
#define MAUI_PATCH      _PATCHKEY(0x06)
        short device_no;        /* Synthesizer number */
        long len;       /* Size of the sysex data in bytes */
        u_char data[1]; /* Sysex data starts here */
};
 
/*
 * Patch management interface (/dev/sequencer, /dev/patmgr#)
 * Don't use these calls if you want to maintain compatibility with
 * the future versions of the driver.
 */
 
#define PS_NO_PATCHES           0       /* No patch support on device */
#define PS_MGR_NOT_OK           1       /* Plain patch support (no mgr) */
#define PS_MGR_OK               2       /* Patch manager supported */
#define PS_MANAGED              3       /* Patch manager running */
 
#define SNDCTL_PMGR_IFACE               _IOWR('P', 1, struct patmgr_info)
 
/*
 * The patmgr_info is a fixed size structure which is used for two
 * different purposes. The intended use is for communication between
 * the application using /dev/sequencer and the patch manager daemon
 * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
 *
 * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
 * a patch manager daemon to read and write device parameters. This
 * ioctl available through /dev/sequencer also. Avoid using it since it's
 * extremely hardware dependent. In addition access trough /dev/sequencer
 * may confuse the patch manager daemon.
 */
 
struct patmgr_info {    /* Note! size must be < 4k since kmalloc() is used */
          u_long key;   /* Don't worry. Reserved for communication
                                   between the patch manager and the driver. */
#define PM_K_EVENT              1 /* Event from the /dev/sequencer driver */
#define PM_K_COMMAND            2 /* Request from an application */
#define PM_K_RESPONSE           3 /* From patmgr to application */
#define PM_ERROR                4 /* Error returned by the patmgr */
          int device;
          int command;
 
/*
 * Commands 0x000 to 0xfff reserved for patch manager programs
 */
#define PM_GET_DEVTYPE  1       /* Returns type of the patch mgr interface of dev */
#define         PMTYPE_FM2      1       /* 2 OP fm */
#define         PMTYPE_FM4      2       /* Mixed 4 or 2 op FM (OPL-3) */
#define         PMTYPE_WAVE     3       /* Wave table synthesizer (GUS) */
#define PM_GET_NRPGM    2       /* Returns max # of midi programs in parm1 */
#define PM_GET_PGMMAP   3       /* Returns map of loaded midi programs in data8 */
#define PM_GET_PGM_PATCHES 4    /* Return list of patches of a program (parm1) */
#define PM_GET_PATCH    5       /* Return patch header of patch parm1 */
#define PM_SET_PATCH    6       /* Set patch header of patch parm1 */
#define PM_READ_PATCH   7       /* Read patch (wave) data */
#define PM_WRITE_PATCH  8       /* Write patch (wave) data */
 
/*
 * Commands 0x1000 to 0xffff are for communication between the patch manager
 * and the client
 */
#define _PM_LOAD_PATCH  0x100
 
/*
 * Commands above 0xffff reserved for device specific use
 */
 
        long parm1;
        long parm2;
        long parm3;
 
        union {
                u_char data8[4000];
                u_short data16[2000];
                u_long data32[1000];
                struct patch_info patch;
        } data;
};
 
/*
 * When a patch manager daemon is present, it will be informed by the
 * driver when something important happens. For example when the
 * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
 * returned. The command field contains the event type:
 */
#define PM_E_OPENED             1       /* /dev/sequencer opened */
#define PM_E_CLOSED             2       /* /dev/sequencer closed */
#define PM_E_PATCH_RESET        3       /* SNDCTL_RESETSAMPLES called */
#define PM_E_PATCH_LOADED       4       /* A patch has been loaded by appl */
 
/*
 * /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 - 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             CTL_DAMPER_PEDAL        /* Alias */
#define CTL_HOLD                CTL_DAMPER_PEDAL        /* 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       CTL_DETUNE_DEPTH /* Alias for the above one */
#define CTL_PHASER_DEPTH        0x5f
#define CTL_DATA_INCREMENT      0x60
#define CTL_DATA_DECREMENT      0x61
#define CTL_NONREG_PARM_NUM_LSB 0x62
#define CTL_NONREG_PARM_NUM_MSB 0x63
#define CTL_REGIST_PARM_NUM_LSB 0x64
#define CTL_REGIST_PARM_NUM_MSB 0x65
/*      undefined               0x66 - 0x78 */
/*      reserved                0x79 - 0x7f */
 
/* Pseudo controllers (not midi compatible) */
#define CTRL_PITCH_BENDER       255
#define CTRL_PITCH_BENDER_RANGE 254
#define CTRL_EXPRESSION         253     /* Obsolete */
#define CTRL_MAIN_VOLUME        252     /* Obsolete */
 
#define SEQ_BALANCE             11
#define SEQ_VOLMODE             12
 
/*
 * Volume mode decides how volumes are used
 */
 
#define VOL_METHOD_ADAGIO       1
#define VOL_METHOD_LINEAR       2
 
/*
 * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
 *       input events.
 */
 
/*
 * Event codes 0xf0 to 0xfc are reserved for future extensions.
 */
 
#define SEQ_FULLSIZE            0xfd    /* Long events */
/*
 * SEQ_FULLSIZE events are used for loading patches/samples to the
 * synthesizer devices. These events are passed directly to the driver
 * of the associated synthesizer device. There is no limit to the size
 * of the extended events. These events are not queued but executed
 * immediately when the write() is called (execution can take several
 * seconds of time).
 *
 * When a SEQ_FULLSIZE message is written to the device, it must
 * be written using exactly one write() call. Other events cannot
 * be mixed to the same write.
 *
 * For FM synths (YM3812/OPL3) use struct sbi_instrument and write
 * it to the /dev/sequencer. Don't write other data together with
 * the instrument structure Set the key field of the structure to
 * FM_PATCH. The device field is used to route the patch to the
 * corresponding device.
 *
 * For Gravis UltraSound use struct patch_info. Initialize the key field
 * to GUS_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 u_char sbi_instr_data[32];
 
struct sbi_instrument {
        u_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;      /* Reg. 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_AWE32               0x20
 
        int     perc_mode;      /* No longer supported */
        int     nr_voices;
        int     nr_drums;       /* Obsolete field */
        int     instr_bank_size;
        u_long  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 {
        char            name[30];
        int             device;         /* 0-N. INITIALIZE BEFORE CALLING */
        u_long  capabilities;   /* To be defined later */
        int             dev_type;
        int             dummies[18];    /* Reserve space */
};
 
/*
 * ioctl commands for the /dev/midi##
 */
typedef struct {
        u_char cmd;
        char nr_args, nr_returns;
        u_char data[30];
} mpu_command_rec;
 
#define SNDCTL_MIDI_PRETIME     _IOWR('m', 0, int)
#define SNDCTL_MIDI_MPUMODE     _IOWR('m', 1, int)
#define SNDCTL_MIDI_MPUCMD      _IOWR('m', 2, mpu_command_rec)
#define MIOSPASSTHRU            _IOWR('m', 3, int)
#define MIOGPASSTHRU            _IOWR('m', 4, int)
 
/*
 * IOCTL commands for /dev/dsp and /dev/audio
 */
 
#define SNDCTL_DSP_RESET        _IO  ('P', 0)
#define SNDCTL_DSP_SYNC         _IO  ('P', 1)
#define SNDCTL_DSP_SPEED        _IOWR('P', 2, int)
#define SNDCTL_DSP_STEREO       _IOWR('P', 3, int)
#define SNDCTL_DSP_GETBLKSIZE   _IOR('P', 4, int)
#define SNDCTL_DSP_SETBLKSIZE   _IOW('P', 4, int)
#define SNDCTL_DSP_SETFMT       _IOWR('P',5, int) /* Selects ONE fmt*/
 
/*
 * SOUND_PCM_WRITE_CHANNELS is not that different
 * from SNDCTL_DSP_STEREO
 */
#define SOUND_PCM_WRITE_CHANNELS        _IOWR('P', 6, int)
#define SNDCTL_DSP_CHANNELS     SOUND_PCM_WRITE_CHANNELS
#define SOUND_PCM_WRITE_FILTER  _IOWR('P', 7, int)
#define SNDCTL_DSP_POST         _IO  ('P', 8)
 
/*
 * SNDCTL_DSP_SETBLKSIZE and the following two calls mostly do
 * the same thing, i.e. set the block size used in DMA transfers.
 */
#define SNDCTL_DSP_SUBDIVIDE    _IOWR('P', 9, int)
#define SNDCTL_DSP_SETFRAGMENT  _IOWR('P',10, int)
 
 
#define SNDCTL_DSP_GETFMTS      _IOR ('P',11, int) /* Returns a mask */
/*
 * Buffer status queries.
 */
typedef struct audio_buf_info {
    int fragments;      /* # of avail. frags (partly used ones not counted) */
    int fragstotal;     /* Total # of fragments allocated */
    int fragsize;       /* Size of a fragment in bytes */
 
    int bytes;  /* Avail. space in bytes (includes partly used fragments) */
                /* Note! 'bytes' could be more than fragments*fragsize */
} audio_buf_info;
 
#define SNDCTL_DSP_GETOSPACE    _IOR ('P',12, audio_buf_info)
#define SNDCTL_DSP_GETISPACE    _IOR ('P',13, audio_buf_info)
 
/*
 * SNDCTL_DSP_NONBLOCK is the same (but less powerful, since the
 * action cannot be undone) of FIONBIO. The same can be achieved
 * by opening the device with O_NDELAY
 */
#define SNDCTL_DSP_NONBLOCK     _IO  ('P',14)
 
#define SNDCTL_DSP_GETCAPS      _IOR ('P',15, int)
#define DSP_CAP_REVISION        0x000000ff /* 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() */
 
/*
 * What do these function do ?
 */
#define SNDCTL_DSP_GETTRIGGER   _IOR ('P',16, int)
#define SNDCTL_DSP_SETTRIGGER   _IOW ('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;
 
/*
 * GETIPTR and GETISPACE are not that different... same for out.
 */
#define SNDCTL_DSP_GETIPTR      _IOR ('P',17, count_info)
#define SNDCTL_DSP_GETOPTR      _IOR ('P',18, count_info)
 
typedef struct buffmem_desc {
        caddr_t buffer;
        int size;
} buffmem_desc;
 
#define SNDCTL_DSP_MAPINBUF     _IOR ('P', 19, buffmem_desc)
#define SNDCTL_DSP_MAPOUTBUF    _IOR ('P', 20, buffmem_desc)
#define SNDCTL_DSP_SETSYNCRO    _IO  ('P', 21)
#define SNDCTL_DSP_SETDUPLEX    _IO  ('P', 22)
#define SNDCTL_DSP_GETODELAY    _IOR ('P', 23, int)
 
/*
 * I guess these are the readonly version of the same
 * functions that exist above as SNDCTL_DSP_...
 */
#define SOUND_PCM_READ_RATE     _IOR ('P', 2, int)
#define SOUND_PCM_READ_CHANNELS _IOR ('P', 6, int)
#define SOUND_PCM_READ_BITS     _IOR ('P', 5, int)
#define SOUND_PCM_READ_FILTER   _IOR ('P', 7, int)
 
/*
 * 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) */
 
        u_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;
        u_char data[4000];
} copr_msg;
 
#define SNDCTL_COPR_RESET       _IO  ('C',  0)
#define SNDCTL_COPR_LOAD        _IOWR('C',  1, copr_buffer)
#define SNDCTL_COPR_RDATA       _IOWR('C',  2, copr_debug_buf)
#define SNDCTL_COPR_RCODE       _IOWR('C',  3, copr_debug_buf)
#define SNDCTL_COPR_WDATA       _IOW ('C',  4, copr_debug_buf)
#define SNDCTL_COPR_WCODE       _IOW ('C',  5, copr_debug_buf)
#define SNDCTL_COPR_RUN         _IOWR('C',  6, copr_debug_buf)
#define SNDCTL_COPR_HALT        _IOWR('C',  7, copr_debug_buf)
#define SNDCTL_COPR_SENDMSG     _IOW ('C',  8, copr_msg)
#define SNDCTL_COPR_RCVMSG      _IOR ('C',  9, copr_msg)
 
/*
 * IOCTL commands for /dev/mixer
 */
 
/*
 * Mixer devices
 *
 * There can be up to 20 different analog mixer channels. The
 * SOUND_MIXER_NRDEVICES gives the currently supported maximum.
 * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
 * the devices supported by the particular mixer.
 */
 
#define SOUND_MIXER_NRDEVICES   25
#define SOUND_MIXER_VOLUME      0       /* Master output level */
#define SOUND_MIXER_BASS        1       /* Treble level of all output channels */
#define SOUND_MIXER_TREBLE      2       /* Bass level of all output channels */
#define SOUND_MIXER_SYNTH       3       /* Volume of synthesier input */
#define SOUND_MIXER_PCM         4       /* Output level for the audio device */
#define SOUND_MIXER_SPEAKER     5       /* Output level for the PC speaker
                                         * signals */
#define SOUND_MIXER_LINE        6       /* Volume level for the line in jack */
#define SOUND_MIXER_MIC         7       /* Volume for the signal coming from
                                         * the microphone jack */
#define SOUND_MIXER_CD          8       /* Volume level for the input signal
                                         * connected to the CD audio input */
#define SOUND_MIXER_IMIX        9       /* Recording monitor. It controls the
                                         * output volume of the selected
                                         * recording sources while recording */
#define SOUND_MIXER_ALTPCM      10      /* Volume of the alternative codec
                                         * device */
#define SOUND_MIXER_RECLEV      11      /* Global recording level */
#define SOUND_MIXER_IGAIN       12      /* Input gain */
#define SOUND_MIXER_OGAIN       13      /* Output gain */
/*
 * The AD1848 codec and compatibles have three line level inputs
 * (line, aux1 and aux2). Since each card manufacturer have assigned
 * different meanings to these inputs, it's inpractical to assign
 * specific meanings (line, cd, synth etc.) to them.
 */
#define SOUND_MIXER_LINE1       14      /* Input source 1  (aux1) */
#define SOUND_MIXER_LINE2       15      /* Input source 2  (aux2) */
#define SOUND_MIXER_LINE3       16      /* Input source 3  (line) */
#define SOUND_MIXER_DIGITAL1    17      /* Digital (input) 1 */
#define SOUND_MIXER_DIGITAL2    18      /* Digital (input) 2 */
#define SOUND_MIXER_DIGITAL3    19      /* Digital (input) 3 */
#define SOUND_MIXER_PHONEIN     20      /* Phone input */
#define SOUND_MIXER_PHONEOUT    21      /* Phone output */
#define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
#define SOUND_MIXER_RADIO       23      /* Radio in */
#define SOUND_MIXER_MONITOR     24      /* Monitor (usually mic) volume */
 
 
/*
 * Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX)
 * Not counted to SOUND_MIXER_NRDEVICES, but use the same number space
 */
#define SOUND_ONOFF_MIN         28
#define SOUND_ONOFF_MAX         30
#define SOUND_MIXER_MUTE        28      /* 0 or 1 */
#define SOUND_MIXER_ENHANCE     29      /* Enhanced stereo (0, 40, 60 or 80) */
#define SOUND_MIXER_LOUD        30      /* 0 or 1 */
 
/* Note!        Number 31 cannot be used since the sign bit is reserved */
#define SOUND_MIXER_NONE        31
 
#define SOUND_DEVICE_LABELS     { \
        "Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
        "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
        "Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
        "PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}
 
#define SOUND_DEVICE_NAMES      { \
        "vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
        "mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
        "line1", "line2", "line3", "dig1", "dig2", "dig3", \
        "phin", "phout", "video", "radio", "monitor"}
 
/*      Device bitmask identifiers      */
 
#define SOUND_MIXER_RECSRC      0xff    /* 1 bit per recording source */
#define SOUND_MIXER_DEVMASK     0xfe    /* 1 bit per supported device */
#define SOUND_MIXER_RECMASK     0xfd    /* 1 bit per supp. recording source */
#define SOUND_MIXER_CAPS        0xfc
#define SOUND_CAP_EXCL_INPUT    0x00000001      /* Only 1 rec. src 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)
 
/* 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)         _IOR('M', dev, int)
#define SOUND_MIXER_READ_VOLUME         MIXER_READ(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_READ_BASS           MIXER_READ(SOUND_MIXER_BASS)
#define SOUND_MIXER_READ_TREBLE         MIXER_READ(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_READ_SYNTH          MIXER_READ(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_READ_PCM            MIXER_READ(SOUND_MIXER_PCM)
#define SOUND_MIXER_READ_SPEAKER        MIXER_READ(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_READ_LINE           MIXER_READ(SOUND_MIXER_LINE)
#define SOUND_MIXER_READ_MIC            MIXER_READ(SOUND_MIXER_MIC)
#define SOUND_MIXER_READ_CD             MIXER_READ(SOUND_MIXER_CD)
#define SOUND_MIXER_READ_IMIX           MIXER_READ(SOUND_MIXER_IMIX)
#define SOUND_MIXER_READ_ALTPCM         MIXER_READ(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_READ_RECLEV         MIXER_READ(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_READ_IGAIN          MIXER_READ(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_READ_OGAIN          MIXER_READ(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_READ_LINE1          MIXER_READ(SOUND_MIXER_LINE1)
#define SOUND_MIXER_READ_LINE2          MIXER_READ(SOUND_MIXER_LINE2)
#define SOUND_MIXER_READ_LINE3          MIXER_READ(SOUND_MIXER_LINE3)
#define SOUND_MIXER_READ_DIGITAL1       MIXER_READ(SOUND_MIXER_DIGITAL1)
#define SOUND_MIXER_READ_DIGITAL2       MIXER_READ(SOUND_MIXER_DIGITAL2)
#define SOUND_MIXER_READ_DIGITAL3       MIXER_READ(SOUND_MIXER_DIGITAL3)
#define SOUND_MIXER_READ_PHONEIN        MIXER_READ(SOUND_MIXER_PHONEIN)
#define SOUND_MIXER_READ_PHONEOUT       MIXER_READ(SOUND_MIXER_PHONEOUT)
#define SOUND_MIXER_READ_RADIO          MIXER_READ(SOUND_MIXER_RADIO)
#define SOUND_MIXER_READ_VIDEO          MIXER_READ(SOUND_MIXER_VIDEO)
#define SOUND_MIXER_READ_MONITOR        MIXER_READ(SOUND_MIXER_MONITOR)
 
/* 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)                _IOWR('M', dev, int)
#define SOUND_MIXER_WRITE_VOLUME        MIXER_WRITE(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_WRITE_BASS          MIXER_WRITE(SOUND_MIXER_BASS)
#define SOUND_MIXER_WRITE_TREBLE        MIXER_WRITE(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_WRITE_SYNTH         MIXER_WRITE(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_WRITE_PCM           MIXER_WRITE(SOUND_MIXER_PCM)
#define SOUND_MIXER_WRITE_SPEAKER       MIXER_WRITE(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_WRITE_LINE          MIXER_WRITE(SOUND_MIXER_LINE)
#define SOUND_MIXER_WRITE_MIC           MIXER_WRITE(SOUND_MIXER_MIC)
#define SOUND_MIXER_WRITE_CD            MIXER_WRITE(SOUND_MIXER_CD)
#define SOUND_MIXER_WRITE_IMIX          MIXER_WRITE(SOUND_MIXER_IMIX)
#define SOUND_MIXER_WRITE_ALTPCM        MIXER_WRITE(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_WRITE_RECLEV        MIXER_WRITE(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_WRITE_IGAIN         MIXER_WRITE(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_WRITE_OGAIN         MIXER_WRITE(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_WRITE_LINE1         MIXER_WRITE(SOUND_MIXER_LINE1)
#define SOUND_MIXER_WRITE_LINE2         MIXER_WRITE(SOUND_MIXER_LINE2)
#define SOUND_MIXER_WRITE_LINE3         MIXER_WRITE(SOUND_MIXER_LINE3)
#define SOUND_MIXER_WRITE_DIGITAL1      MIXER_WRITE(SOUND_MIXER_DIGITAL1)
#define SOUND_MIXER_WRITE_DIGITAL2      MIXER_WRITE(SOUND_MIXER_DIGITAL2)
#define SOUND_MIXER_WRITE_DIGITAL3      MIXER_WRITE(SOUND_MIXER_DIGITAL3)
#define SOUND_MIXER_WRITE_PHONEIN       MIXER_WRITE(SOUND_MIXER_PHONEIN)
#define SOUND_MIXER_WRITE_PHONEOUT      MIXER_WRITE(SOUND_MIXER_PHONEOUT)
#define SOUND_MIXER_WRITE_RADIO         MIXER_WRITE(SOUND_MIXER_RADIO)
#define SOUND_MIXER_WRITE_VIDEO         MIXER_WRITE(SOUND_MIXER_VIDEO)
#define SOUND_MIXER_WRITE_MONITOR       MIXER_WRITE(SOUND_MIXER_MONITOR)
 
#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;
 
#define SOUND_MIXER_INFO                _IOR('M', 101, mixer_info)
 
#define LEFT_CHN        0
#define RIGHT_CHN       1
 
/*
 * Level 2 event types for /dev/sequencer
 */
 
/*
 * The 4 most significant bits of byte 0 specify the class of
 * the event:
 *
 *      0x8X = system level events,
 *      0x9X = device/port specific events, event[1] = device/port,
 *              The last 4 bits give the subtype:
 *                      0x02    = Channel event (event[3] = chn).
 *                      0x01    = note event (event[4] = note).
 *                      (0x01 is not used alone but always with bit 0x02).
 *             event[2] = MIDI message code (0x80=note off etc.)
 *
 */
 
#define EV_SEQ_LOCAL            0x80
#define EV_TIMING               0x81
#define EV_CHN_COMMON           0x92
#define EV_CHN_VOICE            0x93
#define EV_SYSEX                0x94
/*
 * Event types 200 to 220 are reserved for application use.
 * These numbers will not be used by the driver.
 */
 
/*
 * Events for event type EV_CHN_VOICE
 */
 
#define MIDI_NOTEOFF            0x80
#define MIDI_NOTEON             0x90
#define MIDI_KEY_PRESSURE       0xA0
 
/*
 * Events for event type EV_CHN_COMMON
 */
 
#define MIDI_CTL_CHANGE         0xB0
#define MIDI_PGM_CHANGE         0xC0
#define MIDI_CHN_PRESSURE       0xD0
#define MIDI_PITCH_BEND         0xE0
 
#define MIDI_SYSTEM_PREFIX      0xF0
 
/*
 * Timer event types
 */
#define TMR_WAIT_REL            1       /* Time relative to the prev time */
#define TMR_WAIT_ABS            2       /* Absolute time since TMR_START */
#define TMR_STOP                3
#define TMR_START               4
#define TMR_CONTINUE            5
#define TMR_TEMPO               6
#define TMR_ECHO                8
#define TMR_CLOCK               9       /* MIDI clock */
#define TMR_SPP                 10      /* Song position pointer */
#define TMR_TIMESIG             11      /* Time signature */
 
/*
 *      Local event types
 */
#define LOCL_STARTAUDIO         1
 
#if (!defined(_KERNEL) && !defined(INKERNEL)) || 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.
 */
 
#ifndef USE_SIMPLE_MACROS
void seqbuf_dump(void); /* This function must be provided by programs */
 
/* 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)              \
        u_char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
#define SEQ_USE_EXTBUF()                \
        extern u_char _seqbuf[]; \
        extern int _seqbuflen;extern int _seqbufptr
#define SEQ_DECLAREBUF()                SEQ_USE_EXTBUF()
#define SEQ_PM_DEFINES                  struct patmgr_info _pm_info
#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 (u_char[])
 * #define _SEQ_ADVBUF(len)      If the applic needs to know the exact
 *                               size of the event, this macro can be used.
 *                               Otherwise this must be defined as empty.
 * #define _seqbufptr            Define the name of index variable or 0 if
 *                               not required.
 */
#define _SEQ_NEEDBUF(len)       /* empty */
#endif
 
#define PM_LOAD_PATCH(dev, bank, pgm)   \
        (SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
        _pm_info.device=dev, _pm_info.data.data8[0]=pgm, \
        _pm_info.parm1 = bank, _pm_info.parm2 = 1, \
        ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
#define PM_LOAD_PATCHES(dev, bank, pgm) \
        (SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
        _pm_info.device=dev, bcopy( pgm, _pm_info.data.data8,  128), \
        _pm_info.parm1 = bank, _pm_info.parm2 = 128, \
        ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
 
#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 i, l=(len); if (l>6)l=6;\
        _SEQ_NEEDBUF(8);\
        _seqbuf[_seqbufptr] = EV_SYSEX;\
        for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+1] = (buf)[i];\
        for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+1] = 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(dev, chn, patch) \
        _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
 
#define SEQ_CONTROL(dev, chn, controller, value) \
        _CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
 
#define SEQ_BENDER(dev, chn, value) \
        _CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
 
 
#define SEQ_V2_X_CONTROL(dev, voice, controller, value) { \
        _SEQ_NEEDBUF(8);\
        _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
        _seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
        _seqbuf[_seqbufptr+2] = (dev);\
        _seqbuf[_seqbufptr+3] = (voice);\
        _seqbuf[_seqbufptr+4] = (controller);\
        *(short *)&_seqbuf[_seqbufptr+5] = (value);\
        _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;\
        *(u_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;\
        *(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
        _SEQ_ADVBUF(8); \
        }
 
#define SEQ_PLAYAUDIO(devmask)          _LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
/*
 * Events for the level 1 interface only
 */
 
#define SEQ_MIDIOUT(device, byte)       { \
        _SEQ_NEEDBUF(4);\
        _seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
        _seqbuf[_seqbufptr+1] = (byte);\
        _seqbuf[_seqbufptr+2] = (device);\
        _seqbuf[_seqbufptr+3] = 0;\
        _SEQ_ADVBUF(4);}
 
/*
 * Patch loading.
 */
#define SEQ_WRPATCH(patchx, len)        { \
        if (_seqbufptr) seqbuf_dump(); \
        if (write(seqfd, (char*)(patchx), len)==-1) \
           perror("Write patch: /dev/sequencer"); \
        }
 
#define SEQ_WRPATCH2(patchx, len)       \
        ( seqbuf_dump(), write(seqfd, (char*)(patchx), len) )
 
#endif
 
/*
 * Here I have moved all the aliases for ioctl names.
 */
 
#define SNDCTL_DSP_SAMPLESIZE   SNDCTL_DSP_SETFMT
#define SOUND_PCM_WRITE_BITS    SNDCTL_DSP_SETFMT
#define SOUND_PCM_SETFMT        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_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
 
/***********************************************************************/


#if 0
# define OSSV4_EXPERIMENT 1
#else
# undef OSSV4_EXPERIMENT
#endif
 
#ifdef SOUND_VERSION
# undef SOUND_VERSION
# define SOUND_VERSION  0x040000
#endif  /* !SOUND_VERSION */
 
#define OSS_LONGNAME_SIZE       64
#define OSS_LABEL_SIZE          16
#define OSS_DEVNODE_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 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;
        long            play_errorparm;
        long            rec_errorparm;
        int             filler[16];
} audio_errinfo;
 
#define SNDCTL_DSP_GETPLAYVOL           _IOR ('P', 24, int)
#define SNDCTL_DSP_SETPLAYVOL           _IOWR('P', 24, int)
#define SNDCTL_DSP_GETERROR             _IOR ('P', 25, audio_errinfo)
 
 
/*
 ****************************************************************************
 * Sync groups for audio devices
 */
typedef struct oss_syncgroup
{
  int id;
  int mode;
  int filler[16];
} oss_syncgroup;
 
#define SNDCTL_DSP_SYNCGROUP            _IOWR('P', 28, oss_syncgroup)
#define SNDCTL_DSP_SYNCSTART            _IOW ('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           _IOW ('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              _IO  ('P', 31)
#define SNDCTL_DSP_SKIP                 _IO  ('P', 32)
 
/*
 ****************************************************************************
 * Abort transfer (reset) functions for input and output
 */
#define SNDCTL_DSP_HALT_INPUT           _IO  ('P', 33)
#define SNDCTL_DSP_RESET_INPUT  SNDCTL_DSP_HALT_INPUT   /* Old name */
#define SNDCTL_DSP_HALT_OUTPUT          _IO  ('P', 34)
#define SNDCTL_DSP_RESET_OUTPUT SNDCTL_DSP_HALT_OUTPUT  /* Old name */
 
/*
 ****************************************************************************
 * Low water level control
 */
#define SNDCTL_DSP_LOW_WATER            _IOW ('P', 34, int)

/** @todo Get rid of OSS_NO_LONG_LONG references? */
 
/*
 ****************************************************************************
 * 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         _IOR ('P', 35, oss_count_t)
#define SNDCTL_DSP_CURRENT_OPTR         _IOR ('P', 36, oss_count_t)
#endif
 
/*
 ****************************************************************************
 * Interface for selecting recording sources and playback output routings.
 */
#define SNDCTL_DSP_GET_RECSRC_NAMES     _IOR ('P', 37, oss_mixer_enuminfo)
#define SNDCTL_DSP_GET_RECSRC           _IOR ('P', 38, int)
#define SNDCTL_DSP_SET_RECSRC           _IOWR('P', 38, int)
 
#define SNDCTL_DSP_GET_PLAYTGT_NAMES    _IOR ('P', 39, oss_mixer_enuminfo)
#define SNDCTL_DSP_GET_PLAYTGT          _IOR ('P', 40, int)
#define SNDCTL_DSP_SET_PLAYTGT          _IOWR('P', 40, int)
#define SNDCTL_DSP_GETRECVOL            _IOR ('P', 41, int)
#define SNDCTL_DSP_SETRECVOL            _IOWR('P', 41, int)
 
/*
 ***************************************************************************
 * Some calls for setting the channel assignment with multi channel devices
 * (see the manual for details).                                                 */
#define SNDCTL_DSP_GET_CHNORDER         _IOR ('P', 42, unsigned long long)
#define SNDCTL_DSP_SET_CHNORDER         _IOWR('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
 
#define MAX_PEAK_CHANNELS       128
typedef unsigned short oss_peaks_t[MAX_PEAK_CHANNELS];
#define SNDCTL_DSP_GETIPEAKS            _IOR('P', 43, oss_peaks_t)
#define SNDCTL_DSP_GETOPEAKS            _IOR('P', 44, oss_peaks_t)
#define SNDCTL_DSP_POLICY               _IOW('P', 45, int)    /* See the manual */
 
/*
 * OSS_SYSIFO is obsolete. Use SNDCTL_SYSINFO insteads.
 */
#define OSS_GETVERSION                  _IOR ('M', 118, int)

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     filler[241];    /* 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 */
#       define MIXT_MONODB      15      /* Mono atten. slider (0 to -144) */
#       define MIXT_STEREODB    16      /* Stereo atten. slider (dual 0 to -144) */
#       define MIXT_SLIDER      17      /* Slider (mono) with full integer range */
#       define MIXT_3D          18
 
  /* 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 */
  char id[16];                  /* 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 filler[7];
} oss_mixext;
 
typedef struct oss_mixext_root
{
  char id[16];
  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
typedef struct oss_mixer_enuminfo
{
        int     dev;
        int     ctrl;
        int     nvalues;
        int     version;                  /* Read the manual */
        short   strindex[OSS_ENUM_MAXVALUE];
        char    strings[3000];
} 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 */
        char    name[64];
        int     busy;           /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
        int     pid;
        int     caps;           /* DSP_CAP_INPUT, DSP_CAP_OUTPUT */
        int     iformats;
        int     oformats;
        int     magic;          /* Reserved for internal use */
        char    cmd[64];        /* Command using the device (if known) */
        int     card_number;
        int     port_number;
        int     mixer_dev;
        int     real_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;       /* Sample rate limits */
        int     max_rate;
        int     min_channels;   /* Number of channels supported */
        int     max_channels;
        int     binding;        /* DSP_BIND_FRONT, etc. 0 means undefined */
        int     rate_source;
        char    handle[32];
        #define OSS_MAX_SAMPLE_RATES    20      /* Cannot be changed  */
        unsigned int nrates;
        unsigned int 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 (inside
                                           /dev) */
        int filler[186];
} oss_audioinfo;
 
typedef struct oss_mixerinfo
{
  int dev;
  char id[16];
  char name[32];
  int modify_counter;
  int card_number;
  int port_number;
  char handle[32];
  int magic;                    /* Reserved */
  int enabled;                  /* Reserved */
  int caps;
#define MIXER_CAP_VIRTUAL                               0x00000001
  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;
  int filler[254];              /* Reserved */
} oss_mixerinfo;
 
typedef struct oss_midi_info
{
  int dev;                      /* Midi device number */
  char name[64];
  int busy;                     /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
  int pid;
  char cmd[64];                 /* 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 */
  char handle[32];
  oss_longname_t song_name;     /* Song name (if known) */
  oss_label_t label;            /* Device label (if given) */
  int latency;                  /* In usecs, -1=unknown */
  int filler[244];
} oss_midi_info;
 
typedef struct oss_card_info
{
  int card;
  char shortname[16];
  char longname[128];
  int flags;
  int filler[256];
} oss_card_info;
 
#define SNDCTL_SYSINFO          _IOR ('X', 1, oss_sysinfo)
#define OSS_SYSINFO             SNDCTL_SYSINFO /* Old name */
 
#define SNDCTL_MIX_NRMIX        _IOR ('X', 2, int)
#define SNDCTL_MIX_NREXT        _IOWR('X', 3, int)
#define SNDCTL_MIX_EXTINFO      _IOWR('X', 4, oss_mixext)
#define SNDCTL_MIX_READ         _IOWR('X', 5, oss_mixer_value)
#define SNDCTL_MIX_WRITE        _IOWR('X', 6, oss_mixer_value)
 
#define SNDCTL_AUDIOINFO        _IOWR('X', 7, oss_audioinfo)
#define SNDCTL_MIX_ENUMINFO     _IOWR('X', 8, oss_mixer_enuminfo)
#define SNDCTL_MIDIINFO         _IOWR('X', 9, oss_midi_info)
#define SNDCTL_MIXERINFO        _IOWR('X',10, oss_mixerinfo)
#define SNDCTL_CARDINFO         _IOWR('X',11, oss_card_info)
 
/*
 * Few more "globally" available ioctl calls.
 */
#define SNDCTL_SETSONG          _IOW ('Y', 2, oss_longname_t)
#define SNDCTL_GETSONG          _IOR ('Y', 2, oss_longname_t)
#define SNDCTL_SETNAME          _IOW ('Y', 3, oss_longname_t)
#define SNDCTL_SETLABEL         _IOW ('Y', 4, oss_label_t)
#define SNDCTL_GETLABEL         _IOR ('Y', 4, oss_label_t)
 
#endif  /* !_SYS_SOUNDCARD_H_ */