soundcard.h

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#ifndef SOUNDCARD_H
#define SOUNDCARD_H
/*
 * Copyright by Hannu Savolainen 1993-2004
 *
 * 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.
 */

/*
 * IMPORTANT NOTICE!
 *
 * This header file contains many obsolete definitions (for compatibility
 * purposes). Please check the OSS Programmer's guide for descriptions
 * of the supported API details (http://www.opensound.com/pguide).
 */

#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   0x039999
#define OPEN_SOUND_SYSTEM

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

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

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

/*
 * Supported card ID numbers (OBSOLETE. NOT USED ANY MORE)
 */

#define SNDCARD_ADLIB           1
#define SNDCARD_SB              2
#define SNDCARD_PAS             3
#define SNDCARD_GUS             4
#define SNDCARD_MPU401          5
#define SNDCARD_SB16            6
#define SNDCARD_SB16MIDI        7
#define SNDCARD_UART6850        8
#define SNDCARD_GUS16           9
#define SNDCARD_MSS             10
#define SNDCARD_PSS             11
#define SNDCARD_SSCAPE          12
#define SNDCARD_PSS_MPU         13
#define SNDCARD_PSS_MSS         14
#define SNDCARD_SSCAPE_MSS      15
#define SNDCARD_TRXPRO          16
#define SNDCARD_TRXPRO_SB       17
#define SNDCARD_TRXPRO_MPU      18
#define SNDCARD_MAD16           19
#define SNDCARD_MAD16_MPU       20
#define SNDCARD_CS4232          21
#define SNDCARD_CS4232_MPU      22
#define SNDCARD_MAUI            23
#define SNDCARD_PSEUDO_MSS      24
#define SNDCARD_GUSPNP          25
#define SNDCARD_UART401         26
/* Sound card numbers 27 to N are reserved. Don't add more numbers here */

/***********************************
 * IOCTL Commands for /dev/sequencer
 */

#ifndef __SIOWR
#if defined(__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)   /* Reserved for future use */
#define SNDCTL_SEQ_TIMING_ENABLE        __SIO  ('Q', 23)        /* Enable incoming MIDI timing messages */
#define SNDCTL_SEQ_ACTSENSE_ENABLE      __SIO  ('Q', 24)        /* Enable incoming active sensing messages */
#define SNDCTL_SEQ_RT_ENABLE            __SIO  ('Q', 25)        /* Enable other incoming realtime messages */

typedef struct synth_control
{
  int devno;                    /* Synthesizer # */
  char data[4000];              /* Device spesific command/data record */
} synth_control;

typedef struct remove_sample
{
  int devno;                    /* Synthesizer # */
  int bankno;                   /* MIDI bank # (0=General MIDI) */
  int instrno;                  /* MIDI instrument number */
} remove_sample;

typedef struct seq_event_rec
{
  unsigned char arr[8];
} seq_event_rec;

#define SNDCTL_TMR_TIMEBASE             __SIOWR('T', 1, int)
#define SNDCTL_TMR_START                __SIO  ('T', 2)
#define SNDCTL_TMR_STOP                 __SIO  ('T', 3)
#define SNDCTL_TMR_CONTINUE             __SIO  ('T', 4)
#define SNDCTL_TMR_TEMPO                __SIOWR('T', 5, int)
#define SNDCTL_TMR_SOURCE               __SIOWR('T', 6, int)
#       define TMR_INTERNAL             0x00000001
#       define TMR_EXTERNAL             0x00000002
#               define TMR_MODE_MIDI    0x00000010
#               define TMR_MODE_FSK     0x00000020
#               define TMR_MODE_CLS     0x00000040
#               define TMR_MODE_SMPTE   0x00000080
#define SNDCTL_TMR_METRONOME            __SIOW ('T', 7, int)
#define SNDCTL_TMR_SELECT               __SIOW ('T', 8, int)

/*
 * Some big endian/little endian handling macros (native endian and opposite
 * endian formats)
 */

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

/* Big endian machines */
#  define _PATCHKEY(id) (0xfd00|id)
#  define AFMT_S16_NE AFMT_S16_BE
#  define AFMT_U16_NE AFMT_U16_BE
#  define AFMT_S32_NE AFMT_S32_BE
#  define AFMT_S24_NE AFMT_S24_BE
#  define AFMT_S16_OE AFMT_S16_LE
#  define AFMT_S32_OE AFMT_S32_LE
#  define AFMT_S24_OE AFMT_S24_LE
#else
#  define _PATCHKEY(id) ((id<<8)|0xfd)
#  define AFMT_S16_NE AFMT_S16_LE
#  define AFMT_U16_NE AFMT_U16_LE
#  define AFMT_S32_NE AFMT_S32_LE
#  define AFMT_S24_NE AFMT_S24_LE
#  define AFMT_S16_OE AFMT_S16_BE
#  define AFMT_S32_OE AFMT_S32_BE
#  define AFMT_S24_OE AFMT_S24_BE
#endif

/*
 * 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
#define WAVEFRONT_PATCH _PATCHKEY(0x06)

  short device_no;              /* Synthesizer number */
  short instr_no;               /* Midi pgm# */

  unsigned int mode;
/*
 * The least significant byte has the same format than the GUS .PAT
 * files
 */
#define WAVE_16_BITS    0x01    /* bit 0 = 8 or 16 bit wave data. */
#define WAVE_UNSIGNED   0x02    /* bit 1 = Signed - Unsigned data. */
#define WAVE_LOOPING    0x04    /* bit 2 = looping enabled-1. */
#define WAVE_BIDIR_LOOP 0x08    /* bit 3 = Set is bidirectional looping. */
#define WAVE_LOOP_BACK  0x10    /* bit 4 = Set is looping backward. */
#define WAVE_SUSTAIN_ON 0x20    /* bit 5 = Turn sustaining on. (Env. pts. 3) */
#define WAVE_ENVELOPES  0x40    /* bit 6 = Enable envelopes - 1 */
#define WAVE_FAST_RELEASE 0x80  /* bit 7 = Shut off immediately after note off */
  /*  (use the env_rate/env_offs fields). */
/* Linux specific bits */
#define WAVE_VIBRATO    0x00010000      /* The vibrato info is valid */
#define WAVE_TREMOLO    0x00020000      /* The tremolo info is valid */
#define WAVE_SCALE      0x00040000      /* The scaling info is valid */
#define WAVE_FRACTIONS  0x00080000      /* Fraction information is valid */
/* Reserved bits */
#define WAVE_ROM        0x40000000      /* For future use */
#define WAVE_MULAW      0x20000000      /* For future use */
/* Other bits must be zeroed */

  int len;                      /* Size of the wave data in bytes */
  int loop_start, loop_end;     /* Byte offsets from the beginning */

/* 
 * The base_freq and base_note fields are used when computing the
 * playback speed for a note. The base_note defines the tone frequency
 * which is heard if the sample is played using the base_freq as the
 * playback speed.
 *
 * The low_note and high_note fields define the minimum and maximum note
 * frequencies for which this sample is valid. It is possible to define
 * more than one samples for an instrument number at the same time. The
 * low_note and high_note fields are used to select the most suitable one.
 *
 * The fields base_note, high_note and low_note should contain
 * the note frequency multiplied by 1000. For example value for the
 * middle A is 440*1000.
 */

  unsigned int base_freq;
  unsigned int base_note;
  unsigned int high_note;
  unsigned int low_note;
  int panning;                  /* -128=left, 127=right */
  int detuning;

  /* New fields introduced in version 1.99.5 */

  /* Envelope. Enabled by mode bit WAVE_ENVELOPES  */
  unsigned char env_rate[6];    /* GUS HW ramping rate */
  unsigned char env_offset[6];  /* 255 == 100% */

  /* 
   * The tremolo, vibrato and scale info are not supported yet.
   * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
   * WAVE_SCALE
   */

  unsigned char tremolo_sweep;
  unsigned char tremolo_rate;
  unsigned char tremolo_depth;

  unsigned char vibrato_sweep;
  unsigned char vibrato_rate;
  unsigned char vibrato_depth;

  int scale_frequency;
  unsigned int scale_factor;    /* from 0 to 2048 or 0 to 2 */

  int volume;
  int fractions;
  int reserved1;
  int spare[2];
  char data[1];                 /* The waveform data starts here */
};

struct sysex_info
{
  short key;                    /* Use SYSEX_PATCH or MAUI_PATCH here */
#define SYSEX_PATCH     _PATCHKEY(0x05)
#define MAUI_PATCH      _PATCHKEY(0x06)
  short device_no;              /* Synthesizer number */
  int len;                      /* Size of the sysex data in bytes */
  unsigned char data[1];        /* Sysex data starts here */
};

/*
 * /dev/sequencer input events.
 *
 * The data written to the /dev/sequencer is a stream of events. Events
 * are records of 4 or 8 bytes. The first byte defines the size. 
 * Any number of events can be written with a write call. There
 * is a set of macros for sending these events. Use these macros if you
 * want to maximize portability of your program.
 *
 * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
 * (All input events are currently 4 bytes long. Be prepared to support
 * 8 byte events also. If you receive any event having first byte >= 128,
 * it's a 8 byte event.
 *
 * The events are documented at the end of this file.
 *
 * Normal events (4 bytes)
 * There is also a 8 byte version of most of the 4 byte events. The
 * 8 byte one is recommended.
 *
 * NOTE! All 4 byte events are now obsolete. Applications should not write
 *       them. However 4 byte events are still used as inputs from
 *       /dev/sequencer (/dev/music uses only 8 byte ones).
 */
#define SEQ_NOTEOFF             0
#define SEQ_FMNOTEOFF           SEQ_NOTEOFF     /* Just old name */
#define SEQ_NOTEON              1
#define SEQ_FMNOTEON            SEQ_NOTEON
#define SEQ_WAIT                TMR_WAIT_ABS
#define SEQ_PGMCHANGE           3
#define SEQ_FMPGMCHANGE         SEQ_PGMCHANGE
#define SEQ_SYNCTIMER           TMR_START
#define SEQ_MIDIPUTC            5
#define SEQ_DRUMON              6               /*** OBSOLETE ***/
#define SEQ_DRUMOFF             7               /*** OBSOLETE ***/
#define SEQ_ECHO                TMR_ECHO        /* For synching programs with output */
#define SEQ_AFTERTOUCH          9
#define SEQ_CONTROLLER          10
#define SEQ_BALANCE             11
#define SEQ_VOLMODE             12

/************************************
 *      Midi controller numbers     *
 ************************************/
/*
 * Controllers 0 to 31 (0x00 to 0x1f) and
 * 32 to 63 (0x20 to 0x3f) are continuous
 * controllers.
 * In the MIDI 1.0 these controllers are sent using
 * two messages. Controller numbers 0 to 31 are used
 * to send the MSB and the controller numbers 32 to 63
 * are for the LSB. Note that just 7 bits are used in MIDI bytes.
 */

#define    CTL_BANK_SELECT              0x00
#define    CTL_MODWHEEL                 0x01
#define    CTL_BREATH                   0x02
/*              undefined               0x03 */
#define    CTL_FOOT                     0x04
#define    CTL_PORTAMENTO_TIME          0x05
#define    CTL_DATA_ENTRY               0x06
#define    CTL_MAIN_VOLUME              0x07
#define    CTL_BALANCE                  0x08
/*              undefined               0x09 */
#define    CTL_PAN                      0x0a
#define    CTL_EXPRESSION               0x0b
/*              undefined               0x0c */
/*              undefined               0x0d */
/*              undefined               0x0e */
/*              undefined               0x0f */
#define    CTL_GENERAL_PURPOSE1         0x10
#define    CTL_GENERAL_PURPOSE2         0x11
#define    CTL_GENERAL_PURPOSE3         0x12
#define    CTL_GENERAL_PURPOSE4         0x13
/*              undefined               0x14 - 0x1f */

/*              undefined               0x20 */
/* The controller numbers 0x21 to 0x3f are reserved for the */
/* least significant bytes of the controllers 0x00 to 0x1f. */
/* These controllers are not recognised by the driver. */

/* Controllers 64 to 69 (0x40 to 0x45) are on/off switches. */
/* 0=OFF and 127=ON (intermediate values are possible) */
#define    CTL_DAMPER_PEDAL             0x40
#define    CTL_SUSTAIN                  0x40    /* Alias */
#define    CTL_HOLD                     0x40    /* Alias */
#define    CTL_PORTAMENTO               0x41
#define    CTL_SOSTENUTO                0x42
#define    CTL_SOFT_PEDAL               0x43
/*              undefined               0x44 */
#define    CTL_HOLD2                    0x45
/*              undefined               0x46 - 0x4f */

#define    CTL_GENERAL_PURPOSE5         0x50
#define    CTL_GENERAL_PURPOSE6         0x51
#define    CTL_GENERAL_PURPOSE7         0x52
#define    CTL_GENERAL_PURPOSE8         0x53
/*              undefined               0x54 - 0x5a */
#define    CTL_EXT_EFF_DEPTH            0x5b
#define    CTL_TREMOLO_DEPTH            0x5c
#define    CTL_CHORUS_DEPTH             0x5d
#define    CTL_DETUNE_DEPTH             0x5e
#define    CTL_CELESTE_DEPTH            0x5e    /* Alias for the above one */
#define    CTL_PHASER_DEPTH             0x5f
#define    CTL_DATA_INCREMENT           0x60
#define    CTL_DATA_DECREMENT           0x61
#define    CTL_NONREG_PARM_NUM_LSB      0x62
#define    CTL_NONREG_PARM_NUM_MSB      0x63
#define    CTL_REGIST_PARM_NUM_LSB      0x64
#define    CTL_REGIST_PARM_NUM_MSB      0x65
/*              undefined               0x66 - 0x78 */
/*              reserved                0x79 - 0x7f */

/* Pseudo controllers (not midi compatible) */
#define    CTRL_PITCH_BENDER            255
#define    CTRL_PITCH_BENDER_RANGE      254
#define    CTRL_EXPRESSION              253     /* Obsolete */
#define    CTRL_MAIN_VOLUME             252     /* Obsolete */

/*
 * Volume mode defines how volumes are used
 */

#define VOL_METHOD_ADAGIO       1
#define VOL_METHOD_LINEAR       2

/*
 * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
 *       input events.
 */

/*
 * Event codes 0xf0 to 0xfc are reserved for future extensions.
 */

#define SEQ_FULLSIZE            0xfd    /* Long events */
/*
 * SEQ_FULLSIZE events are used for loading patches/samples to the
 * synthesizer devices. These events are passed directly to the driver
 * of the associated synthesizer device. There is no limit to the size
 * of the extended events. These events are not queued but executed
 * immediately when the write() is called (execution can take several
 * seconds of time). 
 *
 * When a SEQ_FULLSIZE message is written to the device, it must
 * be written using exactly one write() call. Other events cannot
 * be mixed to the same write.
 *      
 * For FM synths (YM3812/OPL3) use struct sbi_instrument and write it to the 
 * /dev/sequencer. Don't write other data together with the instrument structure
 * Set the key field of the structure to FM_PATCH. The device field is used to
 * route the patch to the corresponding device.
 *
 * For wave table use struct patch_info. Initialize the key field
 * to WAVE_PATCH.
 */
#define SEQ_PRIVATE             0xfe    /* Low level HW dependent events (8 bytes) */
#define SEQ_EXTENDED            0xff    /* Extended events (8 bytes) OBSOLETE */

/*
 * Record for FM patches
 */

typedef unsigned char sbi_instr_data[32];

struct sbi_instrument
{
  unsigned short key;           /* FM_PATCH or OPL3_PATCH */
#define FM_PATCH        _PATCHKEY(0x01)
#define OPL3_PATCH      _PATCHKEY(0x03)
  short device;                 /*  Synth# (0-4)    */
  int channel;                  /*  Program# to be initialized  */
  sbi_instr_data operators;     /*  Register settings for operator cells (.SBI format)  */
};

struct synth_info
{                               /* Read only */
  char name[30];
  int device;                   /* 0-N. INITIALIZE BEFORE CALLING */
  int synth_type;
#define SYNTH_TYPE_FM                   0
#define SYNTH_TYPE_SAMPLE               1
#define SYNTH_TYPE_MIDI                 2       /* Midi interface */

  int synth_subtype;
#define FM_TYPE_ADLIB                   0x00
#define FM_TYPE_OPL3                    0x01
#define MIDI_TYPE_MPU401                0x401

#define SAMPLE_TYPE_BASIC               0x10
#define SAMPLE_TYPE_GUS                 SAMPLE_TYPE_BASIC
#define SAMPLE_TYPE_WAVEFRONT           0x11

  int perc_mode;                /* No longer supported */
  int nr_voices;
  int nr_drums;                 /* Obsolete field */
  int instr_bank_size;
  unsigned int capabilities;
#define SYNTH_CAP_PERCMODE      0x00000001      /* No longer used */
#define SYNTH_CAP_OPL3          0x00000002      /* Set if OPL3 supported */
#define SYNTH_CAP_INPUT         0x00000004      /* Input (MIDI) device */
  int dummies[19];              /* Reserve space */
};

struct sound_timer_info
{
  char name[32];
  int caps;
};

#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 SNDCTL_DSP_POST                 __SIO  ('P', 8)
#define SNDCTL_DSP_SUBDIVIDE            __SIOWR('P', 9, int)
#define SNDCTL_DSP_SETFRAGMENT          __SIOWR('P',10, int)

/* Audio data formats (Note! U8=8 and S16_LE=16 for compatibility) */
#define SNDCTL_DSP_GETFMTS              __SIOR ('P',11, int)    /* Returns a mask */
#define SNDCTL_DSP_SETFMT               __SIOWR('P',5, int)     /* Selects ONE fmt */
#       define AFMT_QUERY       0x00000000      /* Return current fmt */
#       define AFMT_MU_LAW      0x00000001
#       define AFMT_A_LAW       0x00000002
#       define AFMT_IMA_ADPCM   0x00000004
#       define AFMT_U8          0x00000008
#       define AFMT_S16_LE      0x00000010      /* Little endian signed 16 */
#       define AFMT_S16_BE      0x00000020      /* Big endian signed 16 */
#       define AFMT_S8          0x00000040
#       define AFMT_U16_LE      0x00000080      /* Little endian U16 */
#       define AFMT_U16_BE      0x00000100      /* Big endian U16 */
#       define AFMT_MPEG        0x00000200      /* MPEG (2) audio */

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

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

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

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

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

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

/*
 * 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) /* Obsolete. Not supported */
#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      /* Not in use */
#       define DSP_CAP_BATCH            0x00000400      /* Device has some kind of */
                                                        /* internal buffers which may */
                                                        /* cause some delays and */
                                                        /* decrease precision of timing */
#       define DSP_CAP_COPROC           0x00000800      /* Has a coprocessor */
                                                        /* Sometimes it's a DSP */
                                                        /* but usually not */
#       define DSP_CAP_TRIGGER          0x00001000      /* Supports SETTRIGGER */
#       define DSP_CAP_MMAP             0x00002000      /* Supports mmap() */
#       define DSP_CAP_MULTI            0x00004000      /* Supports multiple open */
#       define DSP_CAP_BIND             0x00008000      /* Supports binding to front/rear/center/lfe */
#       define DSP_CAP_INPUT            0x00010000      /* Supports recording */
#       define DSP_CAP_OUTPUT           0x00020000      /* Supports playback */
#       define DSP_CAP_VIRTUAL          0x00040000      /* Virtuial device */
/* 0x00040000 and 0x00080000 reserved for future use */

/* Analog/digital control capabilities */
#       define DSP_CAP_ANALOGOUT        0x00100000
#       define DSP_CAP_ANALOGIN         0x00200000
#       define DSP_CAP_DIGITALOUT       0x00400000
#       define DSP_CAP_DIGITALIN        0x00800000
#       define DSP_CAP_ADMASK           0x00f00000
/*
 * NOTE! (capabilities & DSP_CAP_ADMASK)==0 means just that the
 * digital/analog interface control features are not supported by the 
 * device/driver. However the device still supports analog, digital or
 * both inputs/outputs (depending on the device). See the OSS Programmer's
 * Guide for full details.
 */
#       define DSP_CAP_SHADOW           0x01000000      /* "Shadow" device */

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

#       define DSP_CAP_SLAVE            0x08000000      /* "Slave" device */
#       define DSP_CAP_FREERATE         0x10000000

#define SNDCTL_DSP_GETTRIGGER           __SIOR ('P',16, int)
#define SNDCTL_DSP_SETTRIGGER           __SIOW ('P',16, int)
#       define PCM_ENABLE_INPUT         0x00000001
#       define PCM_ENABLE_OUTPUT        0x00000002

typedef struct count_info
{
  unsigned int bytes;           /* Total # of bytes processed */
  int blocks;                   /* # of fragment transitions since last time */
  int ptr;                      /* Current DMA pointer value */
} count_info;

#define SNDCTL_DSP_GETIPTR              __SIOR ('P',17, count_info)
#define SNDCTL_DSP_GETOPTR              __SIOR ('P',18, count_info)

typedef struct buffmem_desc
{
  unsigned *buffer;
  int size;
} buffmem_desc;
#define SNDCTL_DSP_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)

/*
 * Application's profile defines the way how playback underrun situations 
 * should be handled.
 * 
 * APF_NORMAL (the default) and APF_NETWORK make the driver to cleanup the
 * playback buffer whenever an underrun occurs. This consumes some time
 * prevents looping the existing buffer.
 * APF_CPUINTENS is intended to be set by CPU intensive applications which
 * are likely to run out of time occasionally. In this mode the buffer cleanup 
 * is disabled which saves CPU time but also let's the previous buffer content 
 * to be played during the "pause" after the underrun.
 */
#define SNDCTL_DSP_PROFILE              __SIOW ('P', 23, int)
#define   APF_NORMAL    0       /* Normal applications */
#define   APF_NETWORK   1       /* Underruns probably caused by an "external" delay */
#define   APF_CPUINTENS 2       /* Underruns probably caused by "overheating" the CPU */

#define SNDCTL_DSP_GETODELAY            __SIOR ('P', 23, int)
#define SNDCTL_DSP_GETOUTVOL            __SIOR ('P', 24, int)
#define SNDCTL_DSP_SETOUTVOL            __SIOWR('P', 24, int)

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

#define SNDCTL_DSP_GETERROR             __SIOR ('P', 25, audio_errinfo)

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

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

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

  unsigned int request, param;
#define SPD_RQ_PASSTHROUGH                              1

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

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

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

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

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

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

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

  int srate_in, srate_out;
  int bits_in, bits_out;

  int filler[32];
} oss_digital_control;

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

typedef struct oss_syncgroup
{
  int id;
  int mode;
  int filler[16];
} oss_syncgroup;

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

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

/*
 * SNDCTL_DSP_SILENCE and SNDCTL_DSP_SKIP are new calls in OSS 3.99.0
 * that can be used to implement pause/continue during playback (no effect
 * on recording).
 */
#define SNDCTL_DSP_SILENCE              __SIO  ('P', 31)
#define SNDCTL_DSP_SKIP                 __SIO  ('P', 32)
#define SNDCTL_DSP_RESET_INPUT          __SIO  ('P', 33)
#define SNDCTL_DSP_RESET_OUTPUT         __SIO  ('P', 34)
#define SNDCTL_DSP_LOW_WATER            __SIOW ('P', 34, int)

#ifndef OSS_NO_LONG_LONG
typedef struct
{
        long long samples;
        int fifo_samples;
        int filler[32]; /* For future use */
} oss_count_t;

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

#define SNDCTL_DSP_GET_RECSRC_NAMES     __SIOR ('P', 37, oss_mixer_enuminfo)
#define SNDCTL_DSP_GET_RECSRC           __SIOR ('P', 38, int)
#define SNDCTL_DSP_SET_RECSRC           __SIOWR('P', 38, int)

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

#define SNDCTL_DSP_GETCHANNELMASK       __SIOWR('P', 64, int)
#define SNDCTL_DSP_BIND_CHANNEL         __SIOWR('P', 65, int)
#     define DSP_BIND_QUERY           0x00000000
#     define DSP_BIND_FRONT           0x00000001
#     define DSP_BIND_SURR            0x00000002
#     define DSP_BIND_CENTER_LFE      0x00000004
#     define DSP_BIND_HANDSET         0x00000008
#     define DSP_BIND_MIC             0x00000010
#     define DSP_BIND_MODEM1          0x00000020
#     define DSP_BIND_MODEM2          0x00000040
#     define DSP_BIND_I2S             0x00000080
#     define DSP_BIND_SPDIF           0x00000100
#     define DSP_BIND_REAR            0x00000200

/**********************************
 * 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 */
/* 
 * Some soundcards have three line level inputs (line, aux1 and aux2). 
 * Since each card manufacturer has assigned different meanings to 
 * these inputs, it's impractical to assign specific meanings 
 * (eg line, cd, synth etc.) to them.
 */
#define SOUND_MIXER_LINE1       14      /* Input source 1  (aux1) */
#define SOUND_MIXER_LINE2       15      /* Input source 2  (aux2) */
#define SOUND_MIXER_LINE3       16      /* Input source 3  (line) */
#define SOUND_MIXER_DIGITAL1    17      /* Digital I/O 1 */
#define SOUND_MIXER_DIGITAL2    18      /* Digital I/O 2 */
#define SOUND_MIXER_DIGITAL3    19      /* Digital I/O 3 */
#define SOUND_MIXER_PHONE       20      /* Phone */
#define SOUND_MIXER_MONO        21      /* Mono Output */
#define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
#define SOUND_MIXER_RADIO       23      /* Radio in */
#define SOUND_MIXER_DEPTH       24      /* Surround depth */
#define SOUND_MIXER_REARVOL     25      /* Rear/Surround speaker vol */
#define SOUND_MIXER_CENTERVOL   26      /* Center/LFE speaker vol */
#define SOUND_MIXER_SURRVOL     27      /* Mid-Surround (8speaker) vol */

/* Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX) */
/* Not counted to SOUND_MIXER_NRDEVICES, but use the same number space */
#define SOUND_ONOFF_MIN         28
#define SOUND_ONOFF_MAX         30

/* Note!        Number 31 cannot be used since the sign bit is reserved */
#define SOUND_MIXER_NONE        31

/*
 * The following unsupported macros are no longer functional.
 * Use SOUND_MIXER_PRIVATE# macros in future.
 */
#define SOUND_MIXER_ENHANCE     SOUND_MIXER_NONE
#define SOUND_MIXER_MUTE        SOUND_MIXER_NONE
#define SOUND_MIXER_LOUD        SOUND_MIXER_NONE

#define SOUND_DEVICE_LABELS \
        {"Vol  ", "Bass ", "Treble", "Synth", "Pcm  ", "Speaker ", "Line ", \
         "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
         "Aux1", "Aux2", "Aux3", "Digital1", "Digital2", "Digital3", \
         "Phone", "Mono", "Video", "Radio", "Depth", \
         "Rear", "Center", "Surround"}

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

/*      Device bitmask identifiers      */

#define SOUND_MIXER_RECSRC      0xff    /* Arg contains a bit for each recording source */
#define SOUND_MIXER_DEVMASK     0xfe    /* Arg contains a bit for each supported device */
#define SOUND_MIXER_RECMASK     0xfd    /* Arg contains a bit for each supported recording source */
#define SOUND_MIXER_CAPS        0xfc
#       define SOUND_CAP_EXCL_INPUT     0x00000001      /* Only one recording source at a time */
#       define SOUND_CAP_LAYOUT_B       0x00000002      /* For internal use only */
#       define SOUND_CAP_NOLEGACY       0x00000004      /* For internal use only */
#       define SOUND_CAP_NORECSRC       0x00000008
#define SOUND_MIXER_STEREODEVS  0xfb    /* Mixer channels supporting stereo */

/* OSS/Free ONLY */
#define SOUND_MIXER_OUTSRC    0xfa      /* Arg contains a bit for each input source to output */
#define SOUND_MIXER_OUTMASK   0xf9      /* Arg contains a bit for each supported input source to output */
/* OSS/Free ONLY */

/*      Device mask bits        */

#define SOUND_MASK_VOLUME       (1 << SOUND_MIXER_VOLUME)
#define SOUND_MASK_BASS         (1 << SOUND_MIXER_BASS)
#define SOUND_MASK_TREBLE       (1 << SOUND_MIXER_TREBLE)
#define SOUND_MASK_SYNTH        (1 << SOUND_MIXER_SYNTH)
#define SOUND_MASK_PCM          (1 << SOUND_MIXER_PCM)
#define SOUND_MASK_SPEAKER      (1 << SOUND_MIXER_SPEAKER)
#define SOUND_MASK_LINE         (1 << SOUND_MIXER_LINE)
#define SOUND_MASK_MIC          (1 << SOUND_MIXER_MIC)
#define SOUND_MASK_CD           (1 << SOUND_MIXER_CD)
#define SOUND_MASK_IMIX         (1 << SOUND_MIXER_IMIX)
#define SOUND_MASK_ALTPCM       (1 << SOUND_MIXER_ALTPCM)
#define SOUND_MASK_RECLEV       (1 << SOUND_MIXER_RECLEV)
#define SOUND_MASK_IGAIN        (1 << SOUND_MIXER_IGAIN)
#define SOUND_MASK_OGAIN        (1 << SOUND_MIXER_OGAIN)
#define SOUND_MASK_LINE1        (1 << SOUND_MIXER_LINE1)
#define SOUND_MASK_LINE2        (1 << SOUND_MIXER_LINE2)
#define SOUND_MASK_LINE3        (1 << SOUND_MIXER_LINE3)
#define SOUND_MASK_DIGITAL1     (1 << SOUND_MIXER_DIGITAL1)
#define SOUND_MASK_DIGITAL2     (1 << SOUND_MIXER_DIGITAL2)
#define SOUND_MASK_DIGITAL3     (1 << SOUND_MIXER_DIGITAL3)
#define SOUND_MASK_MONO         (1 << SOUND_MIXER_MONO)
#define SOUND_MASK_PHONE        (1 << SOUND_MIXER_PHONE)
#define SOUND_MASK_RADIO        (1 << SOUND_MIXER_RADIO)
#define SOUND_MASK_VIDEO        (1 << SOUND_MIXER_VIDEO)
#define SOUND_MASK_DEPTH        (1 << SOUND_MIXER_DEPTH)
#define SOUND_MASK_MONITOR      (1 << SOUND_MIXER_MONITOR)
#define SOUND_MASK_REARVOL      (1 << SOUND_MIXER_REARVOL)
#define SOUND_MASK_CENTERVOL    (1 << SOUND_MIXER_CENTERVOL)
#define SOUND_MASK_SURRVOL      (1 << SOUND_MIXER_SURRVOL)

/* Obsolete macros */
#define SOUND_MASK_MUTE         (1 << SOUND_MIXER_MUTE)
#define SOUND_MASK_ENHANCE      (1 << SOUND_MIXER_ENHANCE)
#define SOUND_MASK_LOUD         (1 << SOUND_MIXER_LOUD)

#define MIXER_READ(dev)                 __SIOR('M', dev, int)
#define SOUND_MIXER_READ_VOLUME         MIXER_READ(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_READ_BASS           MIXER_READ(SOUND_MIXER_BASS)
#define SOUND_MIXER_READ_TREBLE         MIXER_READ(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_READ_SYNTH          MIXER_READ(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_READ_PCM            MIXER_READ(SOUND_MIXER_PCM)
#define SOUND_MIXER_READ_SPEAKER        MIXER_READ(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_READ_LINE           MIXER_READ(SOUND_MIXER_LINE)
#define SOUND_MIXER_READ_MIC            MIXER_READ(SOUND_MIXER_MIC)
#define SOUND_MIXER_READ_CD             MIXER_READ(SOUND_MIXER_CD)
#define SOUND_MIXER_READ_IMIX           MIXER_READ(SOUND_MIXER_IMIX)
#define SOUND_MIXER_READ_ALTPCM         MIXER_READ(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_READ_RECLEV         MIXER_READ(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_READ_IGAIN          MIXER_READ(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_READ_OGAIN          MIXER_READ(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_READ_LINE1          MIXER_READ(SOUND_MIXER_LINE1)
#define SOUND_MIXER_READ_LINE2          MIXER_READ(SOUND_MIXER_LINE2)
#define SOUND_MIXER_READ_LINE3          MIXER_READ(SOUND_MIXER_LINE3)

/* Obsolete macros */
#define SOUND_MIXER_READ_MUTE           MIXER_READ(SOUND_MIXER_MUTE)
#define SOUND_MIXER_READ_ENHANCE        MIXER_READ(SOUND_MIXER_ENHANCE)
#define SOUND_MIXER_READ_LOUD           MIXER_READ(SOUND_MIXER_LOUD)

#define SOUND_MIXER_READ_RECSRC         MIXER_READ(SOUND_MIXER_RECSRC)
#define SOUND_MIXER_READ_DEVMASK        MIXER_READ(SOUND_MIXER_DEVMASK)
#define SOUND_MIXER_READ_RECMASK        MIXER_READ(SOUND_MIXER_RECMASK)
#define SOUND_MIXER_READ_STEREODEVS     MIXER_READ(SOUND_MIXER_STEREODEVS)
#define SOUND_MIXER_READ_CAPS           MIXER_READ(SOUND_MIXER_CAPS)

#define MIXER_WRITE(dev)                __SIOWR('M', dev, int)
#define SOUND_MIXER_WRITE_VOLUME        MIXER_WRITE(SOUND_MIXER_VOLUME)
#define SOUND_MIXER_WRITE_BASS          MIXER_WRITE(SOUND_MIXER_BASS)
#define SOUND_MIXER_WRITE_TREBLE        MIXER_WRITE(SOUND_MIXER_TREBLE)
#define SOUND_MIXER_WRITE_SYNTH         MIXER_WRITE(SOUND_MIXER_SYNTH)
#define SOUND_MIXER_WRITE_PCM           MIXER_WRITE(SOUND_MIXER_PCM)
#define SOUND_MIXER_WRITE_SPEAKER       MIXER_WRITE(SOUND_MIXER_SPEAKER)
#define SOUND_MIXER_WRITE_LINE          MIXER_WRITE(SOUND_MIXER_LINE)
#define SOUND_MIXER_WRITE_MIC           MIXER_WRITE(SOUND_MIXER_MIC)
#define SOUND_MIXER_WRITE_CD            MIXER_WRITE(SOUND_MIXER_CD)
#define SOUND_MIXER_WRITE_IMIX          MIXER_WRITE(SOUND_MIXER_IMIX)
#define SOUND_MIXER_WRITE_ALTPCM        MIXER_WRITE(SOUND_MIXER_ALTPCM)
#define SOUND_MIXER_WRITE_RECLEV        MIXER_WRITE(SOUND_MIXER_RECLEV)
#define SOUND_MIXER_WRITE_IGAIN         MIXER_WRITE(SOUND_MIXER_IGAIN)
#define SOUND_MIXER_WRITE_OGAIN         MIXER_WRITE(SOUND_MIXER_OGAIN)
#define SOUND_MIXER_WRITE_LINE1         MIXER_WRITE(SOUND_MIXER_LINE1)
#define SOUND_MIXER_WRITE_LINE2         MIXER_WRITE(SOUND_MIXER_LINE2)
#define SOUND_MIXER_WRITE_LINE3         MIXER_WRITE(SOUND_MIXER_LINE3)

/* Obsolete macros */
#define SOUND_MIXER_WRITE_MUTE          MIXER_WRITE(SOUND_MIXER_MUTE)
#define SOUND_MIXER_WRITE_ENHANCE       MIXER_WRITE(SOUND_MIXER_ENHANCE)
#define SOUND_MIXER_WRITE_LOUD          MIXER_WRITE(SOUND_MIXER_LOUD)

#define SOUND_MIXER_WRITE_RECSRC        MIXER_WRITE(SOUND_MIXER_RECSRC)

typedef struct mixer_info
{
  char id[16];
  char name[32];
  int modify_counter;
  int fillers[10];
} mixer_info;

typedef struct _old_mixer_info
{                               /* Obsolete */
  char id[16];
  char name[32];
} _old_mixer_info;

#define SOUND_MIXER_INFO                __SIOR ('M', 101, mixer_info)
#define SOUND_OLD_MIXER_INFO            __SIOR ('M', 101, _old_mixer_info)

/*
 * A mechanism for accessing "proprietary" mixer features. This method
 * permits passing 128 bytes of arbitrary data between a mixer application
 * and the mixer driver. Interpretation of the record is defined by
 * the particular mixer driver.
 */
typedef unsigned char mixer_record[128];

#define SOUND_MIXER_ACCESS              __SIOWR('M', 102, mixer_record)

/*
 * Two ioctls for special souncard function (OSS/Free only)
 */
#define SOUND_MIXER_AGC  _SIOWR('M', 103, int)
#define SOUND_MIXER_3DSE  _SIOWR('M', 104, int)
/*
 * The SOUND_MIXER_PRIVATE# commands can be redefined by low level drivers.
 * These features can be used when accessing device specific features.
 */
#define SOUND_MIXER_PRIVATE1            __SIOWR('M', 111, int)
#define SOUND_MIXER_PRIVATE2            __SIOWR('M', 112, int)
#define SOUND_MIXER_PRIVATE3            __SIOWR('M', 113, int)
#define SOUND_MIXER_PRIVATE4            __SIOWR('M', 114, int)
#define SOUND_MIXER_PRIVATE5            __SIOWR('M', 115, int)

/*
 * SOUND_MIXER_GETLEVELS and SOUND_MIXER_SETLEVELS calls can be used
 * for querying current mixer settings from the driver and for loading
 * default volume settings _prior_ activating the mixer (loading
 * doesn't affect current state of the mixer hardware). These calls
 * are for internal use by the driver software only.
 */

typedef struct mixer_vol_table
{
  int num;                      /* Index to volume table */
  char name[32];
  int levels[32];
} mixer_vol_table;

#define SOUND_MIXER_GETLEVELS           __SIOWR('M', 116, mixer_vol_table)
#define SOUND_MIXER_SETLEVELS           __SIOWR('M', 117, mixer_vol_table)

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

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

/****************************************************
 * Extended mixer interface  (OSS 3.99.0 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 */
#       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 */
  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) */
  int desc;                     /* Descriptive code. For future use. */
  char extname[32];
  int filler[8];
} 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;
  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, oformats;
  int magic;                    /* Reserved for internal use */
  char cmd[64];                 /* Command using the device */
  int card_number;
  int port_number;
  int mixer_dev;
  int real_device;              /* This is the right /dev/dsp# device to open */
  int enabled;                  /* 1=enabled, 0=device not ready at this moment */
  int flags;                    /* For internal use only - no practical meaning */
  int min_rate, max_rate;       /* Sample rate limits */
  int min_channels, max_channels;       /* Number of channels supported */
  int binding;                  /* DSP_BIND_FRONT, etc. 0 means undefined */
  int rate_source;
  char handle[32];
  int nrates, rates[20];        /* Please read the manual before using these */
  int filler[215];
} oss_audioinfo;

#define OSS_SYSINFO             __SIOR ('X', 1, oss_sysinfo)

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

#define SNDCTL_AUDIOINFO        __SIOWR('X', 7, oss_audioinfo)
#define SNDCTL_MIX_ENUMINFO     __SIOWR('X', 8, oss_mixer_enuminfo)

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

/*
 * Level 2 event types for /dev/sequencer
 */

/*
 * The 4 most significant bits of byte 0 specify the class of
 * the event: 
 *
 *      0x8X = system level events,
 *      0x9X = device/port specific events, event[1] = device/port,
 *              The last 4 bits give the subtype:
 *                      0x02    = Channel event (event[3] = chn).
 *                      0x01    = note event (event[4] = note).
 *                      (0x01 is not used alone but always with bit 0x02).
 *             event[2] = MIDI message code (0x80=note off etc.)
 *
 */

#define EV_SEQ_LOCAL            0x80
#define EV_TIMING               0x81
#define EV_CHN_COMMON           0x92
#define EV_CHN_VOICE            0x93
#define EV_SYSEX                0x94
#define EV_SYSTEM               0x95    /* MIDI system and real time messages (input only) */
/*
 * Event types 200 to 220 are reserved for application use.
 * These numbers will not be used by the driver.
 */

/*
 * Events for event type EV_CHN_VOICE
 */

#define MIDI_NOTEOFF            0x80
#define MIDI_NOTEON             0x90
#define MIDI_KEY_PRESSURE       0xA0

/*
 * Events for event type EV_CHN_COMMON
 */

#define MIDI_CTL_CHANGE         0xB0
#define MIDI_PGM_CHANGE         0xC0
#define MIDI_CHN_PRESSURE       0xD0
#define MIDI_PITCH_BEND         0xE0

#define MIDI_SYSTEM_PREFIX      0xF0

/*
 * Timer event types
 */
#define TMR_WAIT_REL            1       /* Time relative to the prev time */
#define TMR_WAIT_ABS            2       /* Absolute time since TMR_START */
#define TMR_STOP                3
#define TMR_START               4
#define TMR_CONTINUE            5
#define TMR_TEMPO               6
#define TMR_ECHO                8
#define TMR_CLOCK               9       /* MIDI clock */
#define TMR_SPP                 10      /* Song position pointer */
#define TMR_TIMESIG             11      /* Time signature */

/*
 *      Local event types
 */
#define LOCL_STARTAUDIO         1
#define LOCL_STARTAUDIO2        2
#define LOCL_STARTAUDIO3        3
#define LOCL_STARTAUDIO4        4

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

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

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

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

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

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

#  define SEQ_USE_EXTBUF() \
                EXTERNC unsigned char _seqbuf[]; \
                EXTERNC int _seqbuflen;EXTERNC int _seqbufptr

#ifndef USE_SIMPLE_MACROS
/* Sample seqbuf_dump() implementation:
 *
 *      SEQ_DEFINEBUF (2048);   -- Defines a buffer for 2048 bytes
 *
 *      int seqfd;              -- The file descriptor for /dev/sequencer.
 *
 *      void
 *      seqbuf_dump ()
 *      {
 *        if (_seqbufptr)
 *          if (write (seqfd, _seqbuf, _seqbufptr) == -1)
 *            {
 *              perror ("write /dev/sequencer");
 *              exit (-1);
 *            }
 *        _seqbufptr = 0;
 *      }
 */

#define SEQ_DEFINEBUF(len) \
        unsigned char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
#define _SEQ_NEEDBUF(len) \
        if ((_seqbufptr+(len)) > _seqbuflen) seqbuf_dump()
#define _SEQ_ADVBUF(len) _seqbufptr += len
#define SEQ_DUMPBUF seqbuf_dump
#else
/*
 * This variation of the sequencer macros is used just to format one event
 * using fixed buffer.
 * 
 * The program using the macro library must define the following macros before
 * using this library.
 *
 * #define _seqbuf               name of the buffer (unsigned char[]) 
 * #define _SEQ_ADVBUF(len)      If the applic needs to know the exact
 *                               size of the event, this macro can be used.
 *                               Otherwise this must be defined as empty.
 * #define _seqbufptr            Define the name of index variable or 0 if
 *                               not required. 
 */
#define _SEQ_NEEDBUF(len)       /* empty */
#endif
#endif /* !OSSLIB */

#define SEQ_VOLUME_MODE(dev, mode) \
                                {_SEQ_NEEDBUF(8);\
                                _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
                                _seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
                                _seqbuf[_seqbufptr+2] = (dev);\
                                _seqbuf[_seqbufptr+3] = (mode);\
                                _seqbuf[_seqbufptr+4] = 0;\
                                _seqbuf[_seqbufptr+5] = 0;\
                                _seqbuf[_seqbufptr+6] = 0;\
                                _seqbuf[_seqbufptr+7] = 0;\
                                _SEQ_ADVBUF(8);}

/*
 * Midi voice messages
 */

#define _CHN_VOICE(dev, event, chn, note, parm) \
                                {_SEQ_NEEDBUF(8);\
                                _seqbuf[_seqbufptr] = EV_CHN_VOICE;\
                                _seqbuf[_seqbufptr+1] = (dev);\
                                _seqbuf[_seqbufptr+2] = (event);\
                                _seqbuf[_seqbufptr+3] = (chn);\
                                _seqbuf[_seqbufptr+4] = (note);\
                                _seqbuf[_seqbufptr+5] = (parm);\
                                _seqbuf[_seqbufptr+6] = (0);\
                                _seqbuf[_seqbufptr+7] = 0;\
                                _SEQ_ADVBUF(8);}

#define SEQ_START_NOTE(dev, chn, note, vol) \
                        _CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)

#define SEQ_STOP_NOTE(dev, chn, note, vol) \
                        _CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)

#define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
                        _CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)

/*
 * Midi channel messages
 */

#define _CHN_COMMON(dev, event, chn, p1, p2, w14) \
                                {_SEQ_NEEDBUF(8);\
                                _seqbuf[_seqbufptr] = EV_CHN_COMMON;\
                                _seqbuf[_seqbufptr+1] = (dev);\
                                _seqbuf[_seqbufptr+2] = (event);\
                                _seqbuf[_seqbufptr+3] = (chn);\
                                _seqbuf[_seqbufptr+4] = (p1);\
                                _seqbuf[_seqbufptr+5] = (p2);\
                                *(short *)&_seqbuf[_seqbufptr+6] = (w14);\
                                _SEQ_ADVBUF(8);}
/*
 * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
 * sending any MIDI bytes but it's absolutely not possible. Trying to do
 * so _will_ cause problems with MPU401 intelligent mode).
 *
 * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be 
 * sent by calling SEQ_SYSEX() several times (there must be no other events
 * between them). First sysex fragment must have 0xf0 in the first byte
 * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
 * between these sysex start and end markers cannot be larger than 0x7f. Also
 * lengths of each fragments (except the last one) must be 6.
 *
 * Breaking the above rules may work with some MIDI ports but is likely to
 * cause fatal problems with some other devices (such as MPU401).
 */
#define SEQ_SYSEX(dev, buf, len) \
                                {int ii, ll=(len); \
                                 unsigned char *bufp=buf;\
                                 if (ll>6)ll=6;\
                                _SEQ_NEEDBUF(8);\
                                _seqbuf[_seqbufptr] = EV_SYSEX;\
                                _seqbuf[_seqbufptr+1] = (dev);\
                                for(ii=0;ii<ll;ii++)\
                                   _seqbuf[_seqbufptr+ii+2] = bufp[ii];\
                                for(ii=ll;ii<6;ii++)\
                                   _seqbuf[_seqbufptr+ii+2] = 0xff;\
                                _SEQ_ADVBUF(8);}

#define SEQ_CHN_PRESSURE(dev, chn, pressure) \
                _CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)

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

#define SEQ_CONTROL(dev, chn, controller, value) \
                _CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)

#define SEQ_BENDER(dev, chn, value) \
                _CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)

#define SEQ_V2_X_CONTROL(dev, voice, controller, value) \
                                {_SEQ_NEEDBUF(8);\
                                _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
                                _seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
                                _seqbuf[_seqbufptr+2] = (dev);\
                                _seqbuf[_seqbufptr+3] = (voice);\
                                _seqbuf[_seqbufptr+4] = (controller);\
                                _seqbuf[_seqbufptr+5] = ((value)&0xff);\
                                _seqbuf[_seqbufptr+6] = ((value>>8)&0xff);\
                                _seqbuf[_seqbufptr+7] = 0;\
                                _SEQ_ADVBUF(8);}
/*
 * The following 5 macros are incorrectly implemented and obsolete.
 * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
 */
#define SEQ_PITCHBEND(dev, voice, value) \
        SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
#define SEQ_BENDER_RANGE(dev, voice, value) \
        SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
#define SEQ_EXPRESSION(dev, voice, value) \
        SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
#define SEQ_MAIN_VOLUME(dev, voice, value) \
        SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
#define SEQ_PANNING(dev, voice, pos) \
        SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)

/*
 * Timing and syncronization macros
 */

#define _TIMER_EVENT(ev, parm)  {_SEQ_NEEDBUF(8);\
                                _seqbuf[_seqbufptr+0] = EV_TIMING; \
                                _seqbuf[_seqbufptr+1] = (ev); \
                                _seqbuf[_seqbufptr+2] = 0;\
                                _seqbuf[_seqbufptr+3] = 0;\
                                *(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
                                _SEQ_ADVBUF(8);}

#define SEQ_START_TIMER()               _TIMER_EVENT(TMR_START, 0)
#define SEQ_STOP_TIMER()                _TIMER_EVENT(TMR_STOP, 0)
#define SEQ_CONTINUE_TIMER()            _TIMER_EVENT(TMR_CONTINUE, 0)
#define SEQ_WAIT_TIME(ticks)            _TIMER_EVENT(TMR_WAIT_ABS, ticks)
#define SEQ_DELTA_TIME(ticks)           _TIMER_EVENT(TMR_WAIT_REL, ticks)
#define SEQ_ECHO_BACK(key)              _TIMER_EVENT(TMR_ECHO, key)
#define SEQ_SET_TEMPO(value)            _TIMER_EVENT(TMR_TEMPO, value)
#define SEQ_SONGPOS(pos)                _TIMER_EVENT(TMR_SPP, pos)
#define SEQ_TIME_SIGNATURE(sig)         _TIMER_EVENT(TMR_TIMESIG, sig)

/*
 * Local control events
 */

#define _LOCAL_EVENT(ev, parm)          {_SEQ_NEEDBUF(8);\
                                        _seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
                                        _seqbuf[_seqbufptr+1] = (ev); \
                                        _seqbuf[_seqbufptr+2] = 0;\
                                        _seqbuf[_seqbufptr+3] = 0;\
                                        *(unsigned int *)&_seqbuf[_seqbufptr+4] = (parm); \
                                        _SEQ_ADVBUF(8);}

#define SEQ_PLAYAUDIO(devmask)          _LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
#define SEQ_PLAYAUDIO2(devmask)         _LOCAL_EVENT(LOCL_STARTAUDIO2, devmask)
#define SEQ_PLAYAUDIO3(devmask)         _LOCAL_EVENT(LOCL_STARTAUDIO3, devmask)
#define SEQ_PLAYAUDIO4(devmask)         _LOCAL_EVENT(LOCL_STARTAUDIO4, devmask)
/*
 * Events for the level 1 interface only 
 */

#define SEQ_MIDIOUT(device, byte)       {_SEQ_NEEDBUF(4);\
                                        _seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
                                        _seqbuf[_seqbufptr+1] = (byte);\
                                        _seqbuf[_seqbufptr+2] = (device);\
                                        _seqbuf[_seqbufptr+3] = 0;\
                                        _SEQ_ADVBUF(4);}

/*
 * Patch loading.
 */
#ifdef OSSLIB
#   define SEQ_WRPATCH(patchx, len) \
                OSS_write_patch(seqfd, (char*)(patchx), len)
#   define SEQ_WRPATCH2(patchx, len) \
                OSS_write_patch2(seqfd, (char*)(patchx), len)
#else
#   define SEQ_WRPATCH(patchx, len) \
                {if (_seqbufptr) SEQ_DUMPBUF();\
                 if (write(seqfd, (char*)(patchx), len)==-1) \
                    perror("Write patch: /dev/sequencer");}
#   define SEQ_WRPATCH2(patchx, len) \
                (SEQ_DUMPBUF(), write(seqfd, (char*)(patchx), len))
#endif

#endif

#ifdef OSSLIB
extern int osslib_open (const char *path, int flags, int dummy);
extern void ossclose (int fd);
extern int osslib_write (int fd, const void *buf, int count);
extern int osslib_read (int fd, void *buf, int count);
extern int osslib_ioctl (int fd, unsigned int request, void *arg);
#else
#  define osslib_open   open
#  define osslib_close  close
#  define osslib_write  write
#  define osslib_read   read
#  define osslib_ioctl  ioctl
#endif

#endif