The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/sys/soundcard.h

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    1 /*
    2  * soundcard.h
    3  */
    4 
    5 /*-
    6  * Copyright by Hannu Savolainen 1993 / 4Front Technologies 1993-2006
    7  * Modified for the new FreeBSD sound driver by Luigi Rizzo, 1997
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above
   15  *    copyright notice, this list of conditions and the following
   16  *    disclaimer in the documentation and/or other materials provided
   17  *    with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
   20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   22  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR
   23  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   26  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   27  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   29  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/11.1/sys/sys/soundcard.h 301406 2016-06-04 18:57:00Z ed $
   33  */
   34 
   35 /*
   36  * Unless coordinating changes with 4Front Technologies, do NOT make any
   37  * modifications to ioctl commands, types, etc. that would break
   38  * compatibility with the OSS API.
   39  */
   40 
   41 #ifndef _SYS_SOUNDCARD_H_
   42 #define _SYS_SOUNDCARD_H_
   43  /*
   44   * If you make modifications to this file, please contact me before
   45   * distributing the modified version. There is already enough
   46   * diversity in the world.
   47   *
   48   * Regards,
   49   * Hannu Savolainen
   50   * hannu@voxware.pp.fi
   51   *
   52   **********************************************************************
   53   * PS. The Hacker's Guide to VoxWare available from
   54   *     nic.funet.fi:pub/Linux/ALPHA/sound. The file is
   55   *     snd-sdk-doc-0.1.ps.gz (gzipped postscript). It contains
   56   *     some useful information about programming with VoxWare.
   57   *     (NOTE! The pub/Linux/ALPHA/ directories are hidden. You have
   58   *     to cd inside them before the files are accessible.)
   59   **********************************************************************
   60   */
   61 
   62 /*
   63  * SOUND_VERSION is only used by the voxware driver. Hopefully apps
   64  * should not depend on it, but rather look at the capabilities
   65  * of the driver in the kernel!
   66  */
   67 #define SOUND_VERSION  301
   68 #define VOXWARE         /* does this have any use ? */
   69 
   70 /*
   71  * Supported card ID numbers (Should be somewhere else? We keep
   72  * them here just for compativility with the old driver, but these
   73  * constants are of little or no use).
   74  */
   75 
   76 #define SNDCARD_ADLIB          1
   77 #define SNDCARD_SB             2
   78 #define SNDCARD_PAS            3
   79 #define SNDCARD_GUS            4
   80 #define SNDCARD_MPU401         5
   81 #define SNDCARD_SB16           6
   82 #define SNDCARD_SB16MIDI       7
   83 #define SNDCARD_UART6850       8
   84 #define SNDCARD_GUS16          9
   85 #define SNDCARD_MSS            10
   86 #define SNDCARD_PSS            11
   87 #define SNDCARD_SSCAPE         12
   88 #define SNDCARD_PSS_MPU        13
   89 #define SNDCARD_PSS_MSS        14
   90 #define SNDCARD_SSCAPE_MSS     15
   91 #define SNDCARD_TRXPRO         16
   92 #define SNDCARD_TRXPRO_SB      17
   93 #define SNDCARD_TRXPRO_MPU     18
   94 #define SNDCARD_MAD16          19
   95 #define SNDCARD_MAD16_MPU      20
   96 #define SNDCARD_CS4232         21
   97 #define SNDCARD_CS4232_MPU     22
   98 #define SNDCARD_MAUI           23
   99 #define SNDCARD_PSEUDO_MSS     24
  100 #define SNDCARD_AWE32          25
  101 #define SNDCARD_NSS            26
  102 #define SNDCARD_UART16550      27
  103 #define SNDCARD_OPL            28
  104 
  105 #include <sys/types.h>
  106 #include <machine/endian.h>
  107 #ifndef _IOWR
  108 #include <sys/ioccom.h>
  109 #endif  /* !_IOWR */
  110 
  111 /*
  112  * The first part of this file contains the new FreeBSD sound ioctl
  113  * interface. Tries to minimize the number of different ioctls, and
  114  * to be reasonably general.
  115  *
  116  * 970821: some of the new calls have not been implemented yet.
  117  */
  118 
  119 /*
  120  * the following three calls extend the generic file descriptor
  121  * interface. AIONWRITE is the dual of FIONREAD, i.e. returns the max
  122  * number of bytes for a write operation to be non-blocking.
  123  *
  124  * AIOGSIZE/AIOSSIZE are used to change the behaviour of the device,
  125  * from a character device (default) to a block device. In block mode,
  126  * (not to be confused with blocking mode) the main difference for the
  127  * application is that select() will return only when a complete
  128  * block can be read/written to the device, whereas in character mode
  129  * select will return true when one byte can be exchanged. For audio
  130  * devices, character mode makes select almost useless since one byte
  131  * will always be ready by the next sample time (which is often only a
  132  * handful of microseconds away).
  133  * Use a size of 0 or 1 to return to character mode.
  134  */
  135 #define AIONWRITE   _IOR('A', 10, int)   /* get # bytes to write */
  136 struct snd_size {
  137     int play_size;
  138     int rec_size;
  139 };
  140 #define AIOGSIZE    _IOR('A', 11, struct snd_size)/* read current blocksize */
  141 #define AIOSSIZE    _IOWR('A', 11, struct snd_size)  /* sets blocksize */
  142 
  143 /*
  144  * The following constants define supported audio formats. The
  145  * encoding follows voxware conventions, i.e. 1 bit for each supported
  146  * format. We extend it by using bit 31 (RO) to indicate full-duplex
  147  * capability, and bit 29 (RO) to indicate that the card supports/
  148  * needs different formats on capture & playback channels.
  149  * Bit 29 (RW) is used to indicate/ask stereo.
  150  *
  151  * The number of bits required to store the sample is:
  152  *  o  4 bits for the IDA ADPCM format,
  153  *  o  8 bits for 8-bit formats, mu-law and A-law,
  154  *  o  16 bits for the 16-bit formats, and
  155  *  o  32 bits for the 24/32-bit formats.
  156  *  o  undefined for the MPEG audio format.
  157  */
  158 
  159 #define AFMT_QUERY      0x00000000      /* Return current format */
  160 #define AFMT_MU_LAW     0x00000001      /* Logarithmic mu-law */
  161 #define AFMT_A_LAW      0x00000002      /* Logarithmic A-law */
  162 #define AFMT_IMA_ADPCM  0x00000004      /* A 4:1 compressed format where 16-bit
  163                                          * squence represented using the
  164                                          * the average 4 bits per sample */
  165 #define AFMT_U8         0x00000008      /* Unsigned 8-bit */
  166 #define AFMT_S16_LE     0x00000010      /* Little endian signed 16-bit */
  167 #define AFMT_S16_BE     0x00000020      /* Big endian signed 16-bit */
  168 #define AFMT_S8         0x00000040      /* Signed 8-bit */
  169 #define AFMT_U16_LE     0x00000080      /* Little endian unsigned 16-bit */
  170 #define AFMT_U16_BE     0x00000100      /* Big endian unsigned 16-bit */
  171 #define AFMT_MPEG       0x00000200      /* MPEG MP2/MP3 audio */
  172 #define AFMT_AC3        0x00000400      /* Dolby Digital AC3 */
  173 
  174 /*
  175  * 32-bit formats below used for 24-bit audio data where the data is stored
  176  * in the 24 most significant bits and the least significant bits are not used
  177  * (should be set to 0).
  178  */
  179 #define AFMT_S32_LE     0x00001000      /* Little endian signed 32-bit */
  180 #define AFMT_S32_BE     0x00002000      /* Big endian signed 32-bit */
  181 #define AFMT_U32_LE     0x00004000      /* Little endian unsigned 32-bit */
  182 #define AFMT_U32_BE     0x00008000      /* Big endian unsigned 32-bit */
  183 #define AFMT_S24_LE     0x00010000      /* Little endian signed 24-bit */
  184 #define AFMT_S24_BE     0x00020000      /* Big endian signed 24-bit */
  185 #define AFMT_U24_LE     0x00040000      /* Little endian unsigned 24-bit */
  186 #define AFMT_U24_BE     0x00080000      /* Big endian unsigned 24-bit */
  187 
  188 /* Machine dependent AFMT_* definitions. */
  189 #if BYTE_ORDER == LITTLE_ENDIAN
  190 #define AFMT_S16_NE     AFMT_S16_LE
  191 #define AFMT_S24_NE     AFMT_S24_LE
  192 #define AFMT_S32_NE     AFMT_S32_LE
  193 #define AFMT_U16_NE     AFMT_U16_LE
  194 #define AFMT_U24_NE     AFMT_U24_LE
  195 #define AFMT_U32_NE     AFMT_U32_LE
  196 #define AFMT_S16_OE     AFMT_S16_BE
  197 #define AFMT_S24_OE     AFMT_S24_BE
  198 #define AFMT_S32_OE     AFMT_S32_BE
  199 #define AFMT_U16_OE     AFMT_U16_BE
  200 #define AFMT_U24_OE     AFMT_U24_BE
  201 #define AFMT_U32_OE     AFMT_U32_BE
  202 #else
  203 #define AFMT_S16_OE     AFMT_S16_LE
  204 #define AFMT_S24_OE     AFMT_S24_LE
  205 #define AFMT_S32_OE     AFMT_S32_LE
  206 #define AFMT_U16_OE     AFMT_U16_LE
  207 #define AFMT_U24_OE     AFMT_U24_LE
  208 #define AFMT_U32_OE     AFMT_U32_LE
  209 #define AFMT_S16_NE     AFMT_S16_BE
  210 #define AFMT_S24_NE     AFMT_S24_BE
  211 #define AFMT_S32_NE     AFMT_S32_BE
  212 #define AFMT_U16_NE     AFMT_U16_BE
  213 #define AFMT_U24_NE     AFMT_U24_BE
  214 #define AFMT_U32_NE     AFMT_U32_BE
  215 #endif
  216 
  217 #define AFMT_STEREO     0x10000000      /* can do/want stereo   */
  218 
  219 /*
  220  * the following are really capabilities
  221  */
  222 #define AFMT_WEIRD      0x20000000      /* weird hardware...    */
  223     /*
  224      * AFMT_WEIRD reports that the hardware might need to operate
  225      * with different formats in the playback and capture
  226      * channels when operating in full duplex.
  227      * As an example, SoundBlaster16 cards only support U8 in one
  228      * direction and S16 in the other one, and applications should
  229      * be aware of this limitation.
  230      */
  231 #define AFMT_FULLDUPLEX 0x80000000      /* can do full duplex   */
  232 
  233 /*
  234  * The following structure is used to get/set format and sampling rate.
  235  * While it would be better to have things such as stereo, bits per
  236  * sample, endiannes, etc split in different variables, it turns out
  237  * that formats are not that many, and not all combinations are possible.
  238  * So we followed the Voxware approach of associating one bit to each
  239  * format.
  240  */
  241 
  242 typedef struct _snd_chan_param {
  243     u_long      play_rate;      /* sampling rate                        */
  244     u_long      rec_rate;       /* sampling rate                        */
  245     u_long      play_format;    /* everything describing the format     */
  246     u_long      rec_format;     /* everything describing the format     */
  247 } snd_chan_param;
  248 #define AIOGFMT    _IOR('f', 12, snd_chan_param)   /* get format */
  249 #define AIOSFMT    _IOWR('f', 12, snd_chan_param)  /* sets format */
  250 
  251 /*
  252  * The following structure is used to get/set the mixer setting.
  253  * Up to 32 mixers are supported, each one with up to 32 channels.
  254  */
  255 typedef struct _snd_mix_param {
  256     u_char      subdev; /* which output                         */
  257     u_char      line;   /* which input                          */
  258     u_char      left,right; /* volumes, 0..255, 0 = mute        */
  259 } snd_mix_param ;
  260 
  261 /* XXX AIOGMIX, AIOSMIX not implemented yet */
  262 #define AIOGMIX _IOWR('A', 13, snd_mix_param)   /* return mixer status */
  263 #define AIOSMIX _IOWR('A', 14, snd_mix_param)   /* sets mixer status   */
  264 
  265 /*
  266  * channel specifiers used in AIOSTOP and AIOSYNC
  267  */
  268 #define AIOSYNC_PLAY    0x1     /* play chan */
  269 #define AIOSYNC_CAPTURE 0x2     /* capture chan */
  270 /* AIOSTOP stop & flush a channel, returns the residual count */
  271 #define AIOSTOP _IOWR ('A', 15, int)
  272 
  273 /* alternate method used to notify the sync condition */
  274 #define AIOSYNC_SIGNAL  0x100
  275 #define AIOSYNC_SELECT  0x200
  276 
  277 /* what the 'pos' field refers to */
  278 #define AIOSYNC_READY   0x400
  279 #define AIOSYNC_FREE    0x800
  280 
  281 typedef struct _snd_sync_parm {
  282     long chan ; /* play or capture channel, plus modifier */
  283     long pos;
  284 } snd_sync_parm;
  285 #define AIOSYNC _IOWR ('A', 15, snd_sync_parm)  /* misc. synchronization */
  286 
  287 /*
  288  * The following is used to return device capabilities. If the structure
  289  * passed to the ioctl is zeroed, default values are returned for rate
  290  * and formats, a bitmap of available mixers is returned, and values
  291  * (inputs, different levels) for the first one are returned.
  292  *
  293  * If  formats, mixers, inputs are instantiated, then detailed info
  294  * are returned depending on the call.
  295  */
  296 typedef struct _snd_capabilities {
  297     u_long      rate_min, rate_max;     /* min-max sampling rate */
  298     u_long      formats;
  299     u_long      bufsize; /* DMA buffer size */
  300     u_long      mixers; /* bitmap of available mixers */
  301     u_long      inputs; /* bitmap of available inputs (per mixer) */
  302     u_short     left, right;    /* how many levels are supported */
  303 } snd_capabilities;
  304 #define AIOGCAP _IOWR('A', 15, snd_capabilities)        /* get capabilities */
  305 
  306 /*
  307  * here is the old (Voxware) ioctl interface
  308  */
  309 
  310 /*
  311  * IOCTL Commands for /dev/sequencer
  312  */
  313 
  314 #define SNDCTL_SEQ_RESET        _IO  ('Q', 0)
  315 #define SNDCTL_SEQ_SYNC         _IO  ('Q', 1)
  316 #define SNDCTL_SYNTH_INFO       _IOWR('Q', 2, struct synth_info)
  317 #define SNDCTL_SEQ_CTRLRATE     _IOWR('Q', 3, int) /* Set/get timer res.(hz) */
  318 #define SNDCTL_SEQ_GETOUTCOUNT  _IOR ('Q', 4, int)
  319 #define SNDCTL_SEQ_GETINCOUNT   _IOR ('Q', 5, int)
  320 #define SNDCTL_SEQ_PERCMODE     _IOW ('Q', 6, int)
  321 #define SNDCTL_FM_LOAD_INSTR    _IOW ('Q', 7, struct sbi_instrument)    /* Valid for FM only */
  322 #define SNDCTL_SEQ_TESTMIDI     _IOW ('Q', 8, int)
  323 #define SNDCTL_SEQ_RESETSAMPLES _IOW ('Q', 9, int)
  324 #define SNDCTL_SEQ_NRSYNTHS     _IOR ('Q',10, int)
  325 #define SNDCTL_SEQ_NRMIDIS      _IOR ('Q',11, int)
  326 #define SNDCTL_MIDI_INFO        _IOWR('Q',12, struct midi_info)
  327 #define SNDCTL_SEQ_THRESHOLD    _IOW ('Q',13, int)
  328 #define SNDCTL_SEQ_TRESHOLD     SNDCTL_SEQ_THRESHOLD    /* there was once a typo */
  329 #define SNDCTL_SYNTH_MEMAVL     _IOWR('Q',14, int) /* in=dev#, out=memsize */
  330 #define SNDCTL_FM_4OP_ENABLE    _IOW ('Q',15, int) /* in=dev# */
  331 #define SNDCTL_PMGR_ACCESS      _IOWR('Q',16, struct patmgr_info)
  332 #define SNDCTL_SEQ_PANIC        _IO  ('Q',17)
  333 #define SNDCTL_SEQ_OUTOFBAND    _IOW ('Q',18, struct seq_event_rec)
  334 #define SNDCTL_SEQ_GETTIME      _IOR ('Q',19, int)
  335 
  336 struct seq_event_rec {
  337         u_char arr[8];
  338 };
  339 
  340 #define SNDCTL_TMR_TIMEBASE     _IOWR('T', 1, int)
  341 #define SNDCTL_TMR_START        _IO  ('T', 2)
  342 #define SNDCTL_TMR_STOP         _IO  ('T', 3)
  343 #define SNDCTL_TMR_CONTINUE     _IO  ('T', 4)
  344 #define SNDCTL_TMR_TEMPO        _IOWR('T', 5, int)
  345 #define SNDCTL_TMR_SOURCE       _IOWR('T', 6, int)
  346 #   define TMR_INTERNAL         0x00000001
  347 #   define TMR_EXTERNAL         0x00000002
  348 #       define TMR_MODE_MIDI    0x00000010
  349 #       define TMR_MODE_FSK     0x00000020
  350 #       define TMR_MODE_CLS     0x00000040
  351 #       define TMR_MODE_SMPTE   0x00000080
  352 #define SNDCTL_TMR_METRONOME    _IOW ('T', 7, int)
  353 #define SNDCTL_TMR_SELECT       _IOW ('T', 8, int)
  354 
  355 /*
  356  *      Endian aware patch key generation algorithm.
  357  */
  358 
  359 #if defined(_AIX) || defined(AIX)
  360 #  define _PATCHKEY(id) (0xfd00|id)
  361 #else
  362 #  define _PATCHKEY(id) ((id<<8)|0xfd)
  363 #endif
  364 
  365 /*
  366  *      Sample loading mechanism for internal synthesizers (/dev/sequencer)
  367  *      The following patch_info structure has been designed to support
  368  *      Gravis UltraSound. It tries to be universal format for uploading
  369  *      sample based patches but is probably too limited.
  370  */
  371 
  372 struct patch_info {
  373 /*              u_short key;             Use GUS_PATCH here */
  374         short key;               /* Use GUS_PATCH here */
  375 #define GUS_PATCH       _PATCHKEY(0x04)
  376 #define OBSOLETE_GUS_PATCH      _PATCHKEY(0x02)
  377 
  378         short device_no;        /* Synthesizer number */
  379         short instr_no;         /* Midi pgm# */
  380 
  381         u_long mode;
  382 /*
  383  * The least significant byte has the same format than the GUS .PAT
  384  * files
  385  */
  386 #define WAVE_16_BITS    0x01    /* bit 0 = 8 or 16 bit wave data. */
  387 #define WAVE_UNSIGNED   0x02    /* bit 1 = Signed - Unsigned data. */
  388 #define WAVE_LOOPING    0x04    /* bit 2 = looping enabled-1. */
  389 #define WAVE_BIDIR_LOOP 0x08    /* bit 3 = Set is bidirectional looping. */
  390 #define WAVE_LOOP_BACK  0x10    /* bit 4 = Set is looping backward. */
  391 #define WAVE_SUSTAIN_ON 0x20    /* bit 5 = Turn sustaining on. (Env. pts. 3)*/
  392 #define WAVE_ENVELOPES  0x40    /* bit 6 = Enable envelopes - 1 */
  393                                 /*      (use the env_rate/env_offs fields). */
  394 /* Linux specific bits */
  395 #define WAVE_VIBRATO    0x00010000      /* The vibrato info is valid */
  396 #define WAVE_TREMOLO    0x00020000      /* The tremolo info is valid */
  397 #define WAVE_SCALE      0x00040000      /* The scaling info is valid */
  398 /* Other bits must be zeroed */
  399 
  400         long len;       /* Size of the wave data in bytes */
  401         long loop_start, loop_end; /* Byte offsets from the beginning */
  402 
  403 /*
  404  * The base_freq and base_note fields are used when computing the
  405  * playback speed for a note. The base_note defines the tone frequency
  406  * which is heard if the sample is played using the base_freq as the
  407  * playback speed.
  408  *
  409  * The low_note and high_note fields define the minimum and maximum note
  410  * frequencies for which this sample is valid. It is possible to define
  411  * more than one samples for an instrument number at the same time. The
  412  * low_note and high_note fields are used to select the most suitable one.
  413  *
  414  * The fields base_note, high_note and low_note should contain
  415  * the note frequency multiplied by 1000. For example value for the
  416  * middle A is 440*1000.
  417  */
  418 
  419         u_int base_freq;
  420         u_long base_note;
  421         u_long high_note;
  422         u_long low_note;
  423         int panning;    /* -128=left, 127=right */
  424         int detuning;
  425 
  426 /*      New fields introduced in version 1.99.5 */
  427 
  428        /* Envelope. Enabled by mode bit WAVE_ENVELOPES  */
  429         u_char  env_rate[ 6 ];   /* GUS HW ramping rate */
  430         u_char  env_offset[ 6 ]; /* 255 == 100% */
  431 
  432         /*
  433          * The tremolo, vibrato and scale info are not supported yet.
  434          * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
  435          * WAVE_SCALE
  436          */
  437 
  438         u_char  tremolo_sweep;
  439         u_char  tremolo_rate;
  440         u_char  tremolo_depth;
  441 
  442         u_char  vibrato_sweep;
  443         u_char  vibrato_rate;
  444         u_char  vibrato_depth;
  445 
  446         int             scale_frequency;
  447         u_int   scale_factor;           /* from 0 to 2048 or 0 to 2 */
  448 
  449         int             volume;
  450         int             spare[4];
  451         char data[1];   /* The waveform data starts here */
  452 };
  453 
  454 struct sysex_info {
  455         short key;              /* Use GUS_PATCH here */
  456 #define SYSEX_PATCH     _PATCHKEY(0x05)
  457 #define MAUI_PATCH      _PATCHKEY(0x06)
  458         short device_no;        /* Synthesizer number */
  459         long len;       /* Size of the sysex data in bytes */
  460         u_char data[1]; /* Sysex data starts here */
  461 };
  462 
  463 /*
  464  * Patch management interface (/dev/sequencer, /dev/patmgr#)
  465  * Don't use these calls if you want to maintain compatibility with
  466  * the future versions of the driver.
  467  */
  468 
  469 #define PS_NO_PATCHES           0       /* No patch support on device */
  470 #define PS_MGR_NOT_OK           1       /* Plain patch support (no mgr) */
  471 #define PS_MGR_OK               2       /* Patch manager supported */
  472 #define PS_MANAGED              3       /* Patch manager running */
  473 
  474 #define SNDCTL_PMGR_IFACE               _IOWR('P', 1, struct patmgr_info)
  475 
  476 /*
  477  * The patmgr_info is a fixed size structure which is used for two
  478  * different purposes. The intended use is for communication between
  479  * the application using /dev/sequencer and the patch manager daemon
  480  * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
  481  *
  482  * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
  483  * a patch manager daemon to read and write device parameters. This
  484  * ioctl available through /dev/sequencer also. Avoid using it since it's
  485  * extremely hardware dependent. In addition access trough /dev/sequencer
  486  * may confuse the patch manager daemon.
  487  */
  488 
  489 struct patmgr_info {    /* Note! size must be < 4k since kmalloc() is used */
  490           u_long key;   /* Don't worry. Reserved for communication
  491                                    between the patch manager and the driver. */
  492 #define PM_K_EVENT              1 /* Event from the /dev/sequencer driver */
  493 #define PM_K_COMMAND            2 /* Request from an application */
  494 #define PM_K_RESPONSE           3 /* From patmgr to application */
  495 #define PM_ERROR                4 /* Error returned by the patmgr */
  496           int device;
  497           int command;
  498 
  499 /*
  500  * Commands 0x000 to 0xfff reserved for patch manager programs
  501  */
  502 #define PM_GET_DEVTYPE  1       /* Returns type of the patch mgr interface of dev */
  503 #define         PMTYPE_FM2      1       /* 2 OP fm */
  504 #define         PMTYPE_FM4      2       /* Mixed 4 or 2 op FM (OPL-3) */
  505 #define         PMTYPE_WAVE     3       /* Wave table synthesizer (GUS) */
  506 #define PM_GET_NRPGM    2       /* Returns max # of midi programs in parm1 */
  507 #define PM_GET_PGMMAP   3       /* Returns map of loaded midi programs in data8 */
  508 #define PM_GET_PGM_PATCHES 4    /* Return list of patches of a program (parm1) */
  509 #define PM_GET_PATCH    5       /* Return patch header of patch parm1 */
  510 #define PM_SET_PATCH    6       /* Set patch header of patch parm1 */
  511 #define PM_READ_PATCH   7       /* Read patch (wave) data */
  512 #define PM_WRITE_PATCH  8       /* Write patch (wave) data */
  513 
  514 /*
  515  * Commands 0x1000 to 0xffff are for communication between the patch manager
  516  * and the client
  517  */
  518 #define _PM_LOAD_PATCH  0x100
  519 
  520 /*
  521  * Commands above 0xffff reserved for device specific use
  522  */
  523 
  524         long parm1;
  525         long parm2;
  526         long parm3;
  527 
  528         union {
  529                 u_char data8[4000];
  530                 u_short data16[2000];
  531                 u_long data32[1000];
  532                 struct patch_info patch;
  533         } data;
  534 };
  535 
  536 /*
  537  * When a patch manager daemon is present, it will be informed by the
  538  * driver when something important happens. For example when the
  539  * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
  540  * returned. The command field contains the event type:
  541  */
  542 #define PM_E_OPENED             1       /* /dev/sequencer opened */
  543 #define PM_E_CLOSED             2       /* /dev/sequencer closed */
  544 #define PM_E_PATCH_RESET        3       /* SNDCTL_RESETSAMPLES called */
  545 #define PM_E_PATCH_LOADED       4       /* A patch has been loaded by appl */
  546 
  547 /*
  548  * /dev/sequencer input events.
  549  *
  550  * The data written to the /dev/sequencer is a stream of events. Events
  551  * are records of 4 or 8 bytes. The first byte defines the size.
  552  * Any number of events can be written with a write call. There
  553  * is a set of macros for sending these events. Use these macros if you
  554  * want to maximize portability of your program.
  555  *
  556  * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
  557  * (All input events are currently 4 bytes long. Be prepared to support
  558  * 8 byte events also. If you receive any event having first byte >= 128,
  559  * it's a 8 byte event.
  560  *
  561  * The events are documented at the end of this file.
  562  *
  563  * Normal events (4 bytes)
  564  * There is also a 8 byte version of most of the 4 byte events. The
  565  * 8 byte one is recommended.
  566  */
  567 #define SEQ_NOTEOFF             0
  568 #define SEQ_FMNOTEOFF           SEQ_NOTEOFF     /* Just old name */
  569 #define SEQ_NOTEON              1
  570 #define SEQ_FMNOTEON            SEQ_NOTEON
  571 #define SEQ_WAIT                TMR_WAIT_ABS
  572 #define SEQ_PGMCHANGE           3
  573 #define SEQ_FMPGMCHANGE         SEQ_PGMCHANGE
  574 #define SEQ_SYNCTIMER           TMR_START
  575 #define SEQ_MIDIPUTC            5
  576 #define SEQ_DRUMON              6       /*** OBSOLETE ***/
  577 #define SEQ_DRUMOFF             7       /*** OBSOLETE ***/
  578 #define SEQ_ECHO                TMR_ECHO        /* For synching programs with output */
  579 #define SEQ_AFTERTOUCH          9
  580 #define SEQ_CONTROLLER          10
  581 
  582 /*
  583  *      Midi controller numbers
  584  *
  585  * Controllers 0 to 31 (0x00 to 0x1f) and 32 to 63 (0x20 to 0x3f)
  586  * are continuous controllers.
  587  * In the MIDI 1.0 these controllers are sent using two messages.
  588  * Controller numbers 0 to 31 are used to send the MSB and the
  589  * controller numbers 32 to 63 are for the LSB. Note that just 7 bits
  590  * are used in MIDI bytes.
  591  */
  592 
  593 #define CTL_BANK_SELECT         0x00
  594 #define CTL_MODWHEEL            0x01
  595 #define CTL_BREATH              0x02
  596 /*      undefined               0x03 */
  597 #define CTL_FOOT                0x04
  598 #define CTL_PORTAMENTO_TIME     0x05
  599 #define CTL_DATA_ENTRY          0x06
  600 #define CTL_MAIN_VOLUME         0x07
  601 #define CTL_BALANCE             0x08
  602 /*      undefined               0x09 */
  603 #define CTL_PAN                 0x0a
  604 #define CTL_EXPRESSION          0x0b
  605 /*      undefined               0x0c - 0x0f */
  606 #define CTL_GENERAL_PURPOSE1    0x10
  607 #define CTL_GENERAL_PURPOSE2    0x11
  608 #define CTL_GENERAL_PURPOSE3    0x12
  609 #define CTL_GENERAL_PURPOSE4    0x13
  610 /*      undefined               0x14 - 0x1f */
  611 
  612 /*      undefined               0x20 */
  613 
  614 /*
  615  * The controller numbers 0x21 to 0x3f are reserved for the
  616  * least significant bytes of the controllers 0x00 to 0x1f.
  617  * These controllers are not recognised by the driver.
  618  *
  619  * Controllers 64 to 69 (0x40 to 0x45) are on/off switches.
  620  * 0=OFF and 127=ON (intermediate values are possible)
  621  */
  622 #define CTL_DAMPER_PEDAL        0x40
  623 #define CTL_SUSTAIN             CTL_DAMPER_PEDAL        /* Alias */
  624 #define CTL_HOLD                CTL_DAMPER_PEDAL        /* Alias */
  625 #define CTL_PORTAMENTO          0x41
  626 #define CTL_SOSTENUTO           0x42
  627 #define CTL_SOFT_PEDAL          0x43
  628 /*      undefined               0x44 */
  629 #define CTL_HOLD2               0x45
  630 /*      undefined               0x46 - 0x4f */
  631 
  632 #define CTL_GENERAL_PURPOSE5    0x50
  633 #define CTL_GENERAL_PURPOSE6    0x51
  634 #define CTL_GENERAL_PURPOSE7    0x52
  635 #define CTL_GENERAL_PURPOSE8    0x53
  636 /*      undefined               0x54 - 0x5a */
  637 #define CTL_EXT_EFF_DEPTH       0x5b
  638 #define CTL_TREMOLO_DEPTH       0x5c
  639 #define CTL_CHORUS_DEPTH        0x5d
  640 #define CTL_DETUNE_DEPTH        0x5e
  641 #define CTL_CELESTE_DEPTH       CTL_DETUNE_DEPTH /* Alias for the above one */
  642 #define CTL_PHASER_DEPTH        0x5f
  643 #define CTL_DATA_INCREMENT      0x60
  644 #define CTL_DATA_DECREMENT      0x61
  645 #define CTL_NONREG_PARM_NUM_LSB 0x62
  646 #define CTL_NONREG_PARM_NUM_MSB 0x63
  647 #define CTL_REGIST_PARM_NUM_LSB 0x64
  648 #define CTL_REGIST_PARM_NUM_MSB 0x65
  649 /*      undefined               0x66 - 0x78 */
  650 /*      reserved                0x79 - 0x7f */
  651 
  652 /* Pseudo controllers (not midi compatible) */
  653 #define CTRL_PITCH_BENDER       255
  654 #define CTRL_PITCH_BENDER_RANGE 254
  655 #define CTRL_EXPRESSION         253     /* Obsolete */
  656 #define CTRL_MAIN_VOLUME        252     /* Obsolete */
  657 
  658 #define SEQ_BALANCE             11
  659 #define SEQ_VOLMODE             12
  660 
  661 /*
  662  * Volume mode decides how volumes are used
  663  */
  664 
  665 #define VOL_METHOD_ADAGIO       1
  666 #define VOL_METHOD_LINEAR       2
  667 
  668 /*
  669  * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
  670  *       input events.
  671  */
  672 
  673 /*
  674  * Event codes 0xf0 to 0xfc are reserved for future extensions.
  675  */
  676 
  677 #define SEQ_FULLSIZE            0xfd    /* Long events */
  678 /*
  679  * SEQ_FULLSIZE events are used for loading patches/samples to the
  680  * synthesizer devices. These events are passed directly to the driver
  681  * of the associated synthesizer device. There is no limit to the size
  682  * of the extended events. These events are not queued but executed
  683  * immediately when the write() is called (execution can take several
  684  * seconds of time).
  685  *
  686  * When a SEQ_FULLSIZE message is written to the device, it must
  687  * be written using exactly one write() call. Other events cannot
  688  * be mixed to the same write.
  689  *
  690  * For FM synths (YM3812/OPL3) use struct sbi_instrument and write
  691  * it to the /dev/sequencer. Don't write other data together with
  692  * the instrument structure Set the key field of the structure to
  693  * FM_PATCH. The device field is used to route the patch to the
  694  * corresponding device.
  695  *
  696  * For Gravis UltraSound use struct patch_info. Initialize the key field
  697  * to GUS_PATCH.
  698  */
  699 #define SEQ_PRIVATE     0xfe    /* Low level HW dependent events (8 bytes) */
  700 #define SEQ_EXTENDED    0xff    /* Extended events (8 bytes) OBSOLETE */
  701 
  702 /*
  703  * Record for FM patches
  704  */
  705 
  706 typedef u_char sbi_instr_data[32];
  707 
  708 struct sbi_instrument {
  709         u_short key;    /* FM_PATCH or OPL3_PATCH */
  710 #define FM_PATCH        _PATCHKEY(0x01)
  711 #define OPL3_PATCH      _PATCHKEY(0x03)
  712         short           device;         /* Synth# (0-4) */
  713         int             channel;        /* Program# to be initialized  */
  714         sbi_instr_data  operators;      /* Reg. settings for operator cells
  715                                          * (.SBI format)        */
  716 };
  717 
  718 struct synth_info {     /* Read only */
  719         char    name[30];
  720         int     device;         /* 0-N. INITIALIZE BEFORE CALLING */
  721         int     synth_type;
  722 #define SYNTH_TYPE_FM                   0
  723 #define SYNTH_TYPE_SAMPLE               1
  724 #define SYNTH_TYPE_MIDI                 2       /* Midi interface */
  725 
  726         int     synth_subtype;
  727 #define FM_TYPE_ADLIB                   0x00
  728 #define FM_TYPE_OPL3                    0x01
  729 #define MIDI_TYPE_MPU401                0x401
  730 
  731 #define SAMPLE_TYPE_BASIC               0x10
  732 #define SAMPLE_TYPE_GUS                 SAMPLE_TYPE_BASIC
  733 #define SAMPLE_TYPE_AWE32               0x20
  734 
  735         int     perc_mode;      /* No longer supported */
  736         int     nr_voices;
  737         int     nr_drums;       /* Obsolete field */
  738         int     instr_bank_size;
  739         u_long  capabilities;
  740 #define SYNTH_CAP_PERCMODE      0x00000001 /* No longer used */
  741 #define SYNTH_CAP_OPL3          0x00000002 /* Set if OPL3 supported */
  742 #define SYNTH_CAP_INPUT         0x00000004 /* Input (MIDI) device */
  743         int     dummies[19];    /* Reserve space */
  744 };
  745 
  746 struct sound_timer_info {
  747         char name[32];
  748         int caps;
  749 };
  750 
  751 struct midi_info {
  752         char            name[30];
  753         int             device;         /* 0-N. INITIALIZE BEFORE CALLING */
  754         u_long  capabilities;   /* To be defined later */
  755         int             dev_type;
  756         int             dummies[18];    /* Reserve space */
  757 };
  758 
  759 /*
  760  * ioctl commands for the /dev/midi##
  761  */
  762 typedef struct {
  763         u_char cmd;
  764         char nr_args, nr_returns;
  765         u_char data[30];
  766 } mpu_command_rec;
  767 
  768 #define SNDCTL_MIDI_PRETIME     _IOWR('m', 0, int)
  769 #define SNDCTL_MIDI_MPUMODE     _IOWR('m', 1, int)
  770 #define SNDCTL_MIDI_MPUCMD      _IOWR('m', 2, mpu_command_rec)
  771 #define MIOSPASSTHRU            _IOWR('m', 3, int)
  772 #define MIOGPASSTHRU            _IOWR('m', 4, int)
  773 
  774 /*
  775  * IOCTL commands for /dev/dsp and /dev/audio
  776  */
  777 
  778 #define SNDCTL_DSP_HALT         _IO  ('P', 0)
  779 #define SNDCTL_DSP_RESET        SNDCTL_DSP_HALT
  780 #define SNDCTL_DSP_SYNC         _IO  ('P', 1)
  781 #define SNDCTL_DSP_SPEED        _IOWR('P', 2, int)
  782 #define SNDCTL_DSP_STEREO       _IOWR('P', 3, int)
  783 #define SNDCTL_DSP_GETBLKSIZE   _IOR('P', 4, int)
  784 #define SNDCTL_DSP_SETBLKSIZE   _IOW('P', 4, int)
  785 #define SNDCTL_DSP_SETFMT       _IOWR('P',5, int) /* Selects ONE fmt*/
  786 
  787 /*
  788  * SOUND_PCM_WRITE_CHANNELS is not that different
  789  * from SNDCTL_DSP_STEREO
  790  */
  791 #define SOUND_PCM_WRITE_CHANNELS        _IOWR('P', 6, int)
  792 #define SNDCTL_DSP_CHANNELS     SOUND_PCM_WRITE_CHANNELS
  793 #define SOUND_PCM_WRITE_FILTER  _IOWR('P', 7, int)
  794 #define SNDCTL_DSP_POST         _IO  ('P', 8)
  795 
  796 /*
  797  * SNDCTL_DSP_SETBLKSIZE and the following two calls mostly do
  798  * the same thing, i.e. set the block size used in DMA transfers.
  799  */
  800 #define SNDCTL_DSP_SUBDIVIDE    _IOWR('P', 9, int)
  801 #define SNDCTL_DSP_SETFRAGMENT  _IOWR('P',10, int)
  802 
  803 
  804 #define SNDCTL_DSP_GETFMTS      _IOR ('P',11, int) /* Returns a mask */
  805 /*
  806  * Buffer status queries.
  807  */
  808 typedef struct audio_buf_info {
  809     int fragments;      /* # of avail. frags (partly used ones not counted) */
  810     int fragstotal;     /* Total # of fragments allocated */
  811     int fragsize;       /* Size of a fragment in bytes */
  812 
  813     int bytes;  /* Avail. space in bytes (includes partly used fragments) */
  814                 /* Note! 'bytes' could be more than fragments*fragsize */
  815 } audio_buf_info;
  816 
  817 #define SNDCTL_DSP_GETOSPACE    _IOR ('P',12, audio_buf_info)
  818 #define SNDCTL_DSP_GETISPACE    _IOR ('P',13, audio_buf_info)
  819 
  820 /*
  821  * SNDCTL_DSP_NONBLOCK is the same (but less powerful, since the
  822  * action cannot be undone) of FIONBIO. The same can be achieved
  823  * by opening the device with O_NDELAY
  824  */
  825 #define SNDCTL_DSP_NONBLOCK     _IO  ('P',14)
  826 
  827 #define SNDCTL_DSP_GETCAPS      _IOR ('P',15, int)
  828 #       define PCM_CAP_REVISION         0x000000ff      /* Bits for revision level (0 to 255) */
  829 #       define PCM_CAP_DUPLEX           0x00000100      /* Full duplex record/playback */
  830 #       define PCM_CAP_REALTIME         0x00000200      /* Not in use */
  831 #       define PCM_CAP_BATCH            0x00000400      /* Device has some kind of */
  832                                                         /* internal buffers which may */
  833                                                         /* cause some delays and */
  834                                                         /* decrease precision of timing */
  835 #       define PCM_CAP_COPROC           0x00000800      /* Has a coprocessor */
  836                                                         /* Sometimes it's a DSP */
  837                                                         /* but usually not */
  838 #       define PCM_CAP_TRIGGER          0x00001000      /* Supports SETTRIGGER */
  839 #       define PCM_CAP_MMAP             0x00002000      /* Supports mmap() */
  840 #       define PCM_CAP_MULTI            0x00004000      /* Supports multiple open */
  841 #       define PCM_CAP_BIND             0x00008000      /* Supports binding to front/rear/center/lfe */
  842 #       define PCM_CAP_INPUT            0x00010000      /* Supports recording */
  843 #       define PCM_CAP_OUTPUT           0x00020000      /* Supports playback */
  844 #       define PCM_CAP_VIRTUAL          0x00040000      /* Virtual device */
  845 /* 0x00040000 and 0x00080000 reserved for future use */
  846 
  847 /* Analog/digital control capabilities */
  848 #       define PCM_CAP_ANALOGOUT        0x00100000
  849 #       define PCM_CAP_ANALOGIN         0x00200000
  850 #       define PCM_CAP_DIGITALOUT       0x00400000
  851 #       define PCM_CAP_DIGITALIN        0x00800000
  852 #       define PCM_CAP_ADMASK           0x00f00000
  853 /*
  854  * NOTE! (capabilities & PCM_CAP_ADMASK)==0 means just that the
  855  * digital/analog interface control features are not supported by the 
  856  * device/driver. However the device still supports analog, digital or
  857  * both inputs/outputs (depending on the device). See the OSS Programmer's
  858  * Guide for full details.
  859  */
  860 #       define PCM_CAP_SPECIAL          0x01000000      /* Not for ordinary "multimedia" use */
  861 #       define PCM_CAP_SHADOW           0x00000000      /* OBSOLETE */
  862 
  863 /*
  864  * Preferred channel usage. These bits can be used to
  865  * give recommendations to the application. Used by few drivers.
  866  * For example if ((caps & DSP_CH_MASK) == DSP_CH_MONO) means that
  867  * the device works best in mono mode. However it doesn't necessarily mean
  868  * that the device cannot be used in stereo. These bits should only be used
  869  * by special applications such as multi track hard disk recorders to find
  870  * out the initial setup. However the user should be able to override this
  871  * selection.
  872  *
  873  * To find out which modes are actually supported the application should 
  874  * try to select them using SNDCTL_DSP_CHANNELS.
  875  */
  876 #       define DSP_CH_MASK              0x06000000      /* Mask */
  877 #       define DSP_CH_ANY               0x00000000      /* No preferred mode */
  878 #       define DSP_CH_MONO              0x02000000
  879 #       define DSP_CH_STEREO            0x04000000
  880 #       define DSP_CH_MULTI             0x06000000      /* More than two channels */
  881 
  882 #       define PCM_CAP_HIDDEN           0x08000000      /* Hidden device */
  883 #       define PCM_CAP_FREERATE         0x10000000
  884 #       define PCM_CAP_MODEM            0x20000000      /* Modem device */
  885 #       define PCM_CAP_DEFAULT          0x40000000      /* "Default" device */
  886 
  887 /*
  888  * The PCM_CAP_* capability names were known as DSP_CAP_* prior OSS 4.0
  889  * so it's necessary to define the older names too.
  890  */
  891 #define DSP_CAP_ADMASK          PCM_CAP_ADMASK
  892 #define DSP_CAP_ANALOGIN        PCM_CAP_ANALOGIN
  893 #define DSP_CAP_ANALOGOUT       PCM_CAP_ANALOGOUT
  894 #define DSP_CAP_BATCH           PCM_CAP_BATCH
  895 #define DSP_CAP_BIND            PCM_CAP_BIND
  896 #define DSP_CAP_COPROC          PCM_CAP_COPROC
  897 #define DSP_CAP_DEFAULT         PCM_CAP_DEFAULT
  898 #define DSP_CAP_DIGITALIN       PCM_CAP_DIGITALIN
  899 #define DSP_CAP_DIGITALOUT      PCM_CAP_DIGITALOUT
  900 #define DSP_CAP_DUPLEX          PCM_CAP_DUPLEX
  901 #define DSP_CAP_FREERATE        PCM_CAP_FREERATE
  902 #define DSP_CAP_HIDDEN          PCM_CAP_HIDDEN
  903 #define DSP_CAP_INPUT           PCM_CAP_INPUT
  904 #define DSP_CAP_MMAP            PCM_CAP_MMAP
  905 #define DSP_CAP_MODEM           PCM_CAP_MODEM
  906 #define DSP_CAP_MULTI           PCM_CAP_MULTI
  907 #define DSP_CAP_OUTPUT          PCM_CAP_OUTPUT
  908 #define DSP_CAP_REALTIME        PCM_CAP_REALTIME
  909 #define DSP_CAP_REVISION        PCM_CAP_REVISION
  910 #define DSP_CAP_SHADOW          PCM_CAP_SHADOW
  911 #define DSP_CAP_TRIGGER         PCM_CAP_TRIGGER
  912 #define DSP_CAP_VIRTUAL         PCM_CAP_VIRTUAL
  913 
  914 /*
  915  * What do these function do ?
  916  */
  917 #define SNDCTL_DSP_GETTRIGGER   _IOR ('P',16, int)
  918 #define SNDCTL_DSP_SETTRIGGER   _IOW ('P',16, int)
  919 #define PCM_ENABLE_INPUT        0x00000001
  920 #define PCM_ENABLE_OUTPUT       0x00000002
  921 
  922 typedef struct count_info {
  923         int bytes;      /* Total # of bytes processed */
  924         int blocks;     /* # of fragment transitions since last time */
  925         int ptr;        /* Current DMA pointer value */
  926 } count_info;
  927 
  928 /*
  929  * GETIPTR and GETISPACE are not that different... same for out.
  930  */
  931 #define SNDCTL_DSP_GETIPTR      _IOR ('P',17, count_info)
  932 #define SNDCTL_DSP_GETOPTR      _IOR ('P',18, count_info)
  933 
  934 typedef struct buffmem_desc {
  935         caddr_t buffer;
  936         int size;
  937 } buffmem_desc;
  938 
  939 #define SNDCTL_DSP_MAPINBUF     _IOR ('P', 19, buffmem_desc)
  940 #define SNDCTL_DSP_MAPOUTBUF    _IOR ('P', 20, buffmem_desc)
  941 #define SNDCTL_DSP_SETSYNCRO    _IO  ('P', 21)
  942 #define SNDCTL_DSP_SETDUPLEX    _IO  ('P', 22)
  943 #define SNDCTL_DSP_GETODELAY    _IOR ('P', 23, int)
  944 
  945 /*
  946  * I guess these are the readonly version of the same
  947  * functions that exist above as SNDCTL_DSP_...
  948  */
  949 #define SOUND_PCM_READ_RATE     _IOR ('P', 2, int)
  950 #define SOUND_PCM_READ_CHANNELS _IOR ('P', 6, int)
  951 #define SOUND_PCM_READ_BITS     _IOR ('P', 5, int)
  952 #define SOUND_PCM_READ_FILTER   _IOR ('P', 7, int)
  953 
  954 /*
  955  * ioctl calls to be used in communication with coprocessors and
  956  * DSP chips.
  957  */
  958 
  959 typedef struct copr_buffer {
  960         int command;    /* Set to 0 if not used */
  961         int flags;
  962 #define CPF_NONE                0x0000
  963 #define CPF_FIRST               0x0001  /* First block */
  964 #define CPF_LAST                0x0002  /* Last block */
  965         int len;
  966         int offs;       /* If required by the device (0 if not used) */
  967 
  968         u_char data[4000]; /* NOTE! 4000 is not 4k */
  969 } copr_buffer;
  970 
  971 typedef struct copr_debug_buf {
  972         int command;    /* Used internally. Set to 0 */
  973         int parm1;
  974         int parm2;
  975         int flags;
  976         int len;        /* Length of data in bytes */
  977 } copr_debug_buf;
  978 
  979 typedef struct copr_msg {
  980         int len;
  981         u_char data[4000];
  982 } copr_msg;
  983 
  984 #define SNDCTL_COPR_RESET       _IO  ('C',  0)
  985 #define SNDCTL_COPR_LOAD        _IOWR('C',  1, copr_buffer)
  986 #define SNDCTL_COPR_RDATA       _IOWR('C',  2, copr_debug_buf)
  987 #define SNDCTL_COPR_RCODE       _IOWR('C',  3, copr_debug_buf)
  988 #define SNDCTL_COPR_WDATA       _IOW ('C',  4, copr_debug_buf)
  989 #define SNDCTL_COPR_WCODE       _IOW ('C',  5, copr_debug_buf)
  990 #define SNDCTL_COPR_RUN         _IOWR('C',  6, copr_debug_buf)
  991 #define SNDCTL_COPR_HALT        _IOWR('C',  7, copr_debug_buf)
  992 #define SNDCTL_COPR_SENDMSG     _IOW ('C',  8, copr_msg)
  993 #define SNDCTL_COPR_RCVMSG      _IOR ('C',  9, copr_msg)
  994 
  995 /*
  996  * IOCTL commands for /dev/mixer
  997  */
  998 
  999 /*
 1000  * Mixer devices
 1001  *
 1002  * There can be up to 20 different analog mixer channels. The
 1003  * SOUND_MIXER_NRDEVICES gives the currently supported maximum.
 1004  * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
 1005  * the devices supported by the particular mixer.
 1006  */
 1007 
 1008 #define SOUND_MIXER_NRDEVICES   25
 1009 #define SOUND_MIXER_VOLUME      0       /* Master output level */
 1010 #define SOUND_MIXER_BASS        1       /* Treble level of all output channels */
 1011 #define SOUND_MIXER_TREBLE      2       /* Bass level of all output channels */
 1012 #define SOUND_MIXER_SYNTH       3       /* Volume of synthesier input */
 1013 #define SOUND_MIXER_PCM         4       /* Output level for the audio device */
 1014 #define SOUND_MIXER_SPEAKER     5       /* Output level for the PC speaker
 1015                                          * signals */
 1016 #define SOUND_MIXER_LINE        6       /* Volume level for the line in jack */
 1017 #define SOUND_MIXER_MIC         7       /* Volume for the signal coming from
 1018                                          * the microphone jack */
 1019 #define SOUND_MIXER_CD          8       /* Volume level for the input signal
 1020                                          * connected to the CD audio input */
 1021 #define SOUND_MIXER_IMIX        9       /* Recording monitor. It controls the
 1022                                          * output volume of the selected
 1023                                          * recording sources while recording */
 1024 #define SOUND_MIXER_ALTPCM      10      /* Volume of the alternative codec
 1025                                          * device */
 1026 #define SOUND_MIXER_RECLEV      11      /* Global recording level */
 1027 #define SOUND_MIXER_IGAIN       12      /* Input gain */
 1028 #define SOUND_MIXER_OGAIN       13      /* Output gain */
 1029 /*
 1030  * The AD1848 codec and compatibles have three line level inputs
 1031  * (line, aux1 and aux2). Since each card manufacturer have assigned
 1032  * different meanings to these inputs, it's inpractical to assign
 1033  * specific meanings (line, cd, synth etc.) to them.
 1034  */
 1035 #define SOUND_MIXER_LINE1       14      /* Input source 1  (aux1) */
 1036 #define SOUND_MIXER_LINE2       15      /* Input source 2  (aux2) */
 1037 #define SOUND_MIXER_LINE3       16      /* Input source 3  (line) */
 1038 #define SOUND_MIXER_DIGITAL1    17      /* Digital (input) 1 */
 1039 #define SOUND_MIXER_DIGITAL2    18      /* Digital (input) 2 */
 1040 #define SOUND_MIXER_DIGITAL3    19      /* Digital (input) 3 */
 1041 #define SOUND_MIXER_PHONEIN     20      /* Phone input */
 1042 #define SOUND_MIXER_PHONEOUT    21      /* Phone output */
 1043 #define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
 1044 #define SOUND_MIXER_RADIO       23      /* Radio in */
 1045 #define SOUND_MIXER_MONITOR     24      /* Monitor (usually mic) volume */
 1046 
 1047 
 1048 /*
 1049  * Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX)
 1050  * Not counted to SOUND_MIXER_NRDEVICES, but use the same number space
 1051  */
 1052 #define SOUND_ONOFF_MIN         28
 1053 #define SOUND_ONOFF_MAX         30
 1054 #define SOUND_MIXER_MUTE        28      /* 0 or 1 */
 1055 #define SOUND_MIXER_ENHANCE     29      /* Enhanced stereo (0, 40, 60 or 80) */
 1056 #define SOUND_MIXER_LOUD        30      /* 0 or 1 */
 1057 
 1058 /* Note!        Number 31 cannot be used since the sign bit is reserved */
 1059 #define SOUND_MIXER_NONE        31
 1060 
 1061 #define SOUND_DEVICE_LABELS     { \
 1062         "Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
 1063         "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
 1064         "Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
 1065         "PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}
 1066 
 1067 #define SOUND_DEVICE_NAMES      { \
 1068         "vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
 1069         "mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
 1070         "line1", "line2", "line3", "dig1", "dig2", "dig3", \
 1071         "phin", "phout", "video", "radio", "monitor"}
 1072 
 1073 /*      Device bitmask identifiers      */
 1074 
 1075 #define SOUND_MIXER_RECSRC      0xff    /* 1 bit per recording source */
 1076 #define SOUND_MIXER_DEVMASK     0xfe    /* 1 bit per supported device */
 1077 #define SOUND_MIXER_RECMASK     0xfd    /* 1 bit per supp. recording source */
 1078 #define SOUND_MIXER_CAPS        0xfc
 1079 #define SOUND_CAP_EXCL_INPUT    0x00000001      /* Only 1 rec. src at a time */
 1080 #define SOUND_MIXER_STEREODEVS  0xfb    /* Mixer channels supporting stereo */
 1081 
 1082 /*      Device mask bits        */
 1083 
 1084 #define SOUND_MASK_VOLUME       (1 << SOUND_MIXER_VOLUME)
 1085 #define SOUND_MASK_BASS         (1 << SOUND_MIXER_BASS)
 1086 #define SOUND_MASK_TREBLE       (1 << SOUND_MIXER_TREBLE)
 1087 #define SOUND_MASK_SYNTH        (1 << SOUND_MIXER_SYNTH)
 1088 #define SOUND_MASK_PCM          (1 << SOUND_MIXER_PCM)
 1089 #define SOUND_MASK_SPEAKER      (1 << SOUND_MIXER_SPEAKER)
 1090 #define SOUND_MASK_LINE         (1 << SOUND_MIXER_LINE)
 1091 #define SOUND_MASK_MIC          (1 << SOUND_MIXER_MIC)
 1092 #define SOUND_MASK_CD           (1 << SOUND_MIXER_CD)
 1093 #define SOUND_MASK_IMIX         (1 << SOUND_MIXER_IMIX)
 1094 #define SOUND_MASK_ALTPCM       (1 << SOUND_MIXER_ALTPCM)
 1095 #define SOUND_MASK_RECLEV       (1 << SOUND_MIXER_RECLEV)
 1096 #define SOUND_MASK_IGAIN        (1 << SOUND_MIXER_IGAIN)
 1097 #define SOUND_MASK_OGAIN        (1 << SOUND_MIXER_OGAIN)
 1098 #define SOUND_MASK_LINE1        (1 << SOUND_MIXER_LINE1)
 1099 #define SOUND_MASK_LINE2        (1 << SOUND_MIXER_LINE2)
 1100 #define SOUND_MASK_LINE3        (1 << SOUND_MIXER_LINE3)
 1101 #define SOUND_MASK_DIGITAL1     (1 << SOUND_MIXER_DIGITAL1)
 1102 #define SOUND_MASK_DIGITAL2     (1 << SOUND_MIXER_DIGITAL2)
 1103 #define SOUND_MASK_DIGITAL3     (1 << SOUND_MIXER_DIGITAL3)
 1104 #define SOUND_MASK_PHONEIN      (1 << SOUND_MIXER_PHONEIN)
 1105 #define SOUND_MASK_PHONEOUT     (1 << SOUND_MIXER_PHONEOUT)
 1106 #define SOUND_MASK_RADIO        (1 << SOUND_MIXER_RADIO)
 1107 #define SOUND_MASK_VIDEO        (1 << SOUND_MIXER_VIDEO)
 1108 #define SOUND_MASK_MONITOR      (1 << SOUND_MIXER_MONITOR)
 1109 
 1110 /* Obsolete macros */
 1111 #define SOUND_MASK_MUTE         (1 << SOUND_MIXER_MUTE)
 1112 #define SOUND_MASK_ENHANCE      (1 << SOUND_MIXER_ENHANCE)
 1113 #define SOUND_MASK_LOUD         (1 << SOUND_MIXER_LOUD)
 1114 
 1115 #define MIXER_READ(dev)         _IOR('M', dev, int)
 1116 #define SOUND_MIXER_READ_VOLUME         MIXER_READ(SOUND_MIXER_VOLUME)
 1117 #define SOUND_MIXER_READ_BASS           MIXER_READ(SOUND_MIXER_BASS)
 1118 #define SOUND_MIXER_READ_TREBLE         MIXER_READ(SOUND_MIXER_TREBLE)
 1119 #define SOUND_MIXER_READ_SYNTH          MIXER_READ(SOUND_MIXER_SYNTH)
 1120 #define SOUND_MIXER_READ_PCM            MIXER_READ(SOUND_MIXER_PCM)
 1121 #define SOUND_MIXER_READ_SPEAKER        MIXER_READ(SOUND_MIXER_SPEAKER)
 1122 #define SOUND_MIXER_READ_LINE           MIXER_READ(SOUND_MIXER_LINE)
 1123 #define SOUND_MIXER_READ_MIC            MIXER_READ(SOUND_MIXER_MIC)
 1124 #define SOUND_MIXER_READ_CD             MIXER_READ(SOUND_MIXER_CD)
 1125 #define SOUND_MIXER_READ_IMIX           MIXER_READ(SOUND_MIXER_IMIX)
 1126 #define SOUND_MIXER_READ_ALTPCM         MIXER_READ(SOUND_MIXER_ALTPCM)
 1127 #define SOUND_MIXER_READ_RECLEV         MIXER_READ(SOUND_MIXER_RECLEV)
 1128 #define SOUND_MIXER_READ_IGAIN          MIXER_READ(SOUND_MIXER_IGAIN)
 1129 #define SOUND_MIXER_READ_OGAIN          MIXER_READ(SOUND_MIXER_OGAIN)
 1130 #define SOUND_MIXER_READ_LINE1          MIXER_READ(SOUND_MIXER_LINE1)
 1131 #define SOUND_MIXER_READ_LINE2          MIXER_READ(SOUND_MIXER_LINE2)
 1132 #define SOUND_MIXER_READ_LINE3          MIXER_READ(SOUND_MIXER_LINE3)
 1133 #define SOUND_MIXER_READ_DIGITAL1       MIXER_READ(SOUND_MIXER_DIGITAL1)
 1134 #define SOUND_MIXER_READ_DIGITAL2       MIXER_READ(SOUND_MIXER_DIGITAL2)
 1135 #define SOUND_MIXER_READ_DIGITAL3       MIXER_READ(SOUND_MIXER_DIGITAL3)
 1136 #define SOUND_MIXER_READ_PHONEIN        MIXER_READ(SOUND_MIXER_PHONEIN)
 1137 #define SOUND_MIXER_READ_PHONEOUT       MIXER_READ(SOUND_MIXER_PHONEOUT)
 1138 #define SOUND_MIXER_READ_RADIO          MIXER_READ(SOUND_MIXER_RADIO)
 1139 #define SOUND_MIXER_READ_VIDEO          MIXER_READ(SOUND_MIXER_VIDEO)
 1140 #define SOUND_MIXER_READ_MONITOR        MIXER_READ(SOUND_MIXER_MONITOR)
 1141 
 1142 /* Obsolete macros */
 1143 #define SOUND_MIXER_READ_MUTE           MIXER_READ(SOUND_MIXER_MUTE)
 1144 #define SOUND_MIXER_READ_ENHANCE        MIXER_READ(SOUND_MIXER_ENHANCE)
 1145 #define SOUND_MIXER_READ_LOUD           MIXER_READ(SOUND_MIXER_LOUD)
 1146 
 1147 #define SOUND_MIXER_READ_RECSRC         MIXER_READ(SOUND_MIXER_RECSRC)
 1148 #define SOUND_MIXER_READ_DEVMASK        MIXER_READ(SOUND_MIXER_DEVMASK)
 1149 #define SOUND_MIXER_READ_RECMASK        MIXER_READ(SOUND_MIXER_RECMASK)
 1150 #define SOUND_MIXER_READ_STEREODEVS     MIXER_READ(SOUND_MIXER_STEREODEVS)
 1151 #define SOUND_MIXER_READ_CAPS           MIXER_READ(SOUND_MIXER_CAPS)
 1152 
 1153 #define MIXER_WRITE(dev)                _IOWR('M', dev, int)
 1154 #define SOUND_MIXER_WRITE_VOLUME        MIXER_WRITE(SOUND_MIXER_VOLUME)
 1155 #define SOUND_MIXER_WRITE_BASS          MIXER_WRITE(SOUND_MIXER_BASS)
 1156 #define SOUND_MIXER_WRITE_TREBLE        MIXER_WRITE(SOUND_MIXER_TREBLE)
 1157 #define SOUND_MIXER_WRITE_SYNTH         MIXER_WRITE(SOUND_MIXER_SYNTH)
 1158 #define SOUND_MIXER_WRITE_PCM           MIXER_WRITE(SOUND_MIXER_PCM)
 1159 #define SOUND_MIXER_WRITE_SPEAKER       MIXER_WRITE(SOUND_MIXER_SPEAKER)
 1160 #define SOUND_MIXER_WRITE_LINE          MIXER_WRITE(SOUND_MIXER_LINE)
 1161 #define SOUND_MIXER_WRITE_MIC           MIXER_WRITE(SOUND_MIXER_MIC)
 1162 #define SOUND_MIXER_WRITE_CD            MIXER_WRITE(SOUND_MIXER_CD)
 1163 #define SOUND_MIXER_WRITE_IMIX          MIXER_WRITE(SOUND_MIXER_IMIX)
 1164 #define SOUND_MIXER_WRITE_ALTPCM        MIXER_WRITE(SOUND_MIXER_ALTPCM)
 1165 #define SOUND_MIXER_WRITE_RECLEV        MIXER_WRITE(SOUND_MIXER_RECLEV)
 1166 #define SOUND_MIXER_WRITE_IGAIN         MIXER_WRITE(SOUND_MIXER_IGAIN)
 1167 #define SOUND_MIXER_WRITE_OGAIN         MIXER_WRITE(SOUND_MIXER_OGAIN)
 1168 #define SOUND_MIXER_WRITE_LINE1         MIXER_WRITE(SOUND_MIXER_LINE1)
 1169 #define SOUND_MIXER_WRITE_LINE2         MIXER_WRITE(SOUND_MIXER_LINE2)
 1170 #define SOUND_MIXER_WRITE_LINE3         MIXER_WRITE(SOUND_MIXER_LINE3)
 1171 #define SOUND_MIXER_WRITE_DIGITAL1      MIXER_WRITE(SOUND_MIXER_DIGITAL1)
 1172 #define SOUND_MIXER_WRITE_DIGITAL2      MIXER_WRITE(SOUND_MIXER_DIGITAL2)
 1173 #define SOUND_MIXER_WRITE_DIGITAL3      MIXER_WRITE(SOUND_MIXER_DIGITAL3)
 1174 #define SOUND_MIXER_WRITE_PHONEIN       MIXER_WRITE(SOUND_MIXER_PHONEIN)
 1175 #define SOUND_MIXER_WRITE_PHONEOUT      MIXER_WRITE(SOUND_MIXER_PHONEOUT)
 1176 #define SOUND_MIXER_WRITE_RADIO         MIXER_WRITE(SOUND_MIXER_RADIO)
 1177 #define SOUND_MIXER_WRITE_VIDEO         MIXER_WRITE(SOUND_MIXER_VIDEO)
 1178 #define SOUND_MIXER_WRITE_MONITOR       MIXER_WRITE(SOUND_MIXER_MONITOR)
 1179 
 1180 #define SOUND_MIXER_WRITE_MUTE          MIXER_WRITE(SOUND_MIXER_MUTE)
 1181 #define SOUND_MIXER_WRITE_ENHANCE       MIXER_WRITE(SOUND_MIXER_ENHANCE)
 1182 #define SOUND_MIXER_WRITE_LOUD          MIXER_WRITE(SOUND_MIXER_LOUD)
 1183 
 1184 #define SOUND_MIXER_WRITE_RECSRC        MIXER_WRITE(SOUND_MIXER_RECSRC)
 1185 
 1186 typedef struct mixer_info {
 1187   char id[16];
 1188   char name[32];
 1189   int  modify_counter;
 1190   int fillers[10];
 1191 } mixer_info;
 1192 
 1193 #define SOUND_MIXER_INFO                _IOR('M', 101, mixer_info)
 1194 
 1195 #define LEFT_CHN        0
 1196 #define RIGHT_CHN       1
 1197 
 1198 /*
 1199  * Level 2 event types for /dev/sequencer
 1200  */
 1201 
 1202 /*
 1203  * The 4 most significant bits of byte 0 specify the class of
 1204  * the event:
 1205  *
 1206  *      0x8X = system level events,
 1207  *      0x9X = device/port specific events, event[1] = device/port,
 1208  *              The last 4 bits give the subtype:
 1209  *                      0x02    = Channel event (event[3] = chn).
 1210  *                      0x01    = note event (event[4] = note).
 1211  *                      (0x01 is not used alone but always with bit 0x02).
 1212  *             event[2] = MIDI message code (0x80=note off etc.)
 1213  *
 1214  */
 1215 
 1216 #define EV_SEQ_LOCAL            0x80
 1217 #define EV_TIMING               0x81
 1218 #define EV_CHN_COMMON           0x92
 1219 #define EV_CHN_VOICE            0x93
 1220 #define EV_SYSEX                0x94
 1221 /*
 1222  * Event types 200 to 220 are reserved for application use.
 1223  * These numbers will not be used by the driver.
 1224  */
 1225 
 1226 /*
 1227  * Events for event type EV_CHN_VOICE
 1228  */
 1229 
 1230 #define MIDI_NOTEOFF            0x80
 1231 #define MIDI_NOTEON             0x90
 1232 #define MIDI_KEY_PRESSURE       0xA0
 1233 
 1234 /*
 1235  * Events for event type EV_CHN_COMMON
 1236  */
 1237 
 1238 #define MIDI_CTL_CHANGE         0xB0
 1239 #define MIDI_PGM_CHANGE         0xC0
 1240 #define MIDI_CHN_PRESSURE       0xD0
 1241 #define MIDI_PITCH_BEND         0xE0
 1242 
 1243 #define MIDI_SYSTEM_PREFIX      0xF0
 1244 
 1245 /*
 1246  * Timer event types
 1247  */
 1248 #define TMR_WAIT_REL            1       /* Time relative to the prev time */
 1249 #define TMR_WAIT_ABS            2       /* Absolute time since TMR_START */
 1250 #define TMR_STOP                3
 1251 #define TMR_START               4
 1252 #define TMR_CONTINUE            5
 1253 #define TMR_TEMPO               6
 1254 #define TMR_ECHO                8
 1255 #define TMR_CLOCK               9       /* MIDI clock */
 1256 #define TMR_SPP                 10      /* Song position pointer */
 1257 #define TMR_TIMESIG             11      /* Time signature */
 1258 
 1259 /*
 1260  *      Local event types
 1261  */
 1262 #define LOCL_STARTAUDIO         1
 1263 
 1264 #if !defined(_KERNEL) || defined(USE_SEQ_MACROS)
 1265 /*
 1266  *      Some convenience macros to simplify programming of the
 1267  *      /dev/sequencer interface
 1268  *
 1269  *      These macros define the API which should be used when possible.
 1270  */
 1271 
 1272 #ifndef USE_SIMPLE_MACROS
 1273 void seqbuf_dump(void); /* This function must be provided by programs */
 1274 
 1275 /* Sample seqbuf_dump() implementation:
 1276  *
 1277  *      SEQ_DEFINEBUF (2048);   -- Defines a buffer for 2048 bytes
 1278  *
 1279  *      int seqfd;              -- The file descriptor for /dev/sequencer.
 1280  *
 1281  *      void
 1282  *      seqbuf_dump ()
 1283  *      {
 1284  *        if (_seqbufptr)
 1285  *          if (write (seqfd, _seqbuf, _seqbufptr) == -1)
 1286  *            {
 1287  *              perror ("write /dev/sequencer");
 1288  *              exit (-1);
 1289  *            }
 1290  *        _seqbufptr = 0;
 1291  *      }
 1292  */
 1293 
 1294 #define SEQ_DEFINEBUF(len)              \
 1295         u_char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
 1296 #define SEQ_USE_EXTBUF()                \
 1297         extern u_char _seqbuf[]; \
 1298         extern int _seqbuflen;extern int _seqbufptr
 1299 #define SEQ_DECLAREBUF()                SEQ_USE_EXTBUF()
 1300 #define SEQ_PM_DEFINES                  struct patmgr_info _pm_info
 1301 #define _SEQ_NEEDBUF(len)               \
 1302         if ((_seqbufptr+(len)) > _seqbuflen) \
 1303                 seqbuf_dump()
 1304 #define _SEQ_ADVBUF(len)                _seqbufptr += len
 1305 #define SEQ_DUMPBUF                     seqbuf_dump
 1306 #else
 1307 /*
 1308  * This variation of the sequencer macros is used just to format one event
 1309  * using fixed buffer.
 1310  *
 1311  * The program using the macro library must define the following macros before
 1312  * using this library.
 1313  *
 1314  * #define _seqbuf               name of the buffer (u_char[])
 1315  * #define _SEQ_ADVBUF(len)      If the applic needs to know the exact
 1316  *                               size of the event, this macro can be used.
 1317  *                               Otherwise this must be defined as empty.
 1318  * #define _seqbufptr            Define the name of index variable or 0 if
 1319  *                               not required.
 1320  */
 1321 #define _SEQ_NEEDBUF(len)       /* empty */
 1322 #endif
 1323 
 1324 #define PM_LOAD_PATCH(dev, bank, pgm)   \
 1325         (SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
 1326         _pm_info.device=dev, _pm_info.data.data8[0]=pgm, \
 1327         _pm_info.parm1 = bank, _pm_info.parm2 = 1, \
 1328         ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
 1329 #define PM_LOAD_PATCHES(dev, bank, pgm) \
 1330         (SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
 1331         _pm_info.device=dev, bcopy( pgm, _pm_info.data.data8,  128), \
 1332         _pm_info.parm1 = bank, _pm_info.parm2 = 128, \
 1333         ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
 1334 
 1335 #define SEQ_VOLUME_MODE(dev, mode)      { \
 1336         _SEQ_NEEDBUF(8);\
 1337         _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
 1338         _seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
 1339         _seqbuf[_seqbufptr+2] = (dev);\
 1340         _seqbuf[_seqbufptr+3] = (mode);\
 1341         _seqbuf[_seqbufptr+4] = 0;\
 1342         _seqbuf[_seqbufptr+5] = 0;\
 1343         _seqbuf[_seqbufptr+6] = 0;\
 1344         _seqbuf[_seqbufptr+7] = 0;\
 1345         _SEQ_ADVBUF(8);}
 1346 
 1347 /*
 1348  * Midi voice messages
 1349  */
 1350 
 1351 #define _CHN_VOICE(dev, event, chn, note, parm)  { \
 1352         _SEQ_NEEDBUF(8);\
 1353         _seqbuf[_seqbufptr] = EV_CHN_VOICE;\
 1354         _seqbuf[_seqbufptr+1] = (dev);\
 1355         _seqbuf[_seqbufptr+2] = (event);\
 1356         _seqbuf[_seqbufptr+3] = (chn);\
 1357         _seqbuf[_seqbufptr+4] = (note);\
 1358         _seqbuf[_seqbufptr+5] = (parm);\
 1359         _seqbuf[_seqbufptr+6] = (0);\
 1360         _seqbuf[_seqbufptr+7] = 0;\
 1361         _SEQ_ADVBUF(8);}
 1362 
 1363 #define SEQ_START_NOTE(dev, chn, note, vol) \
 1364                 _CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)
 1365 
 1366 #define SEQ_STOP_NOTE(dev, chn, note, vol) \
 1367                 _CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)
 1368 
 1369 #define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
 1370                 _CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)
 1371 
 1372 /*
 1373  * Midi channel messages
 1374  */
 1375 
 1376 #define _CHN_COMMON(dev, event, chn, p1, p2, w14) { \
 1377         _SEQ_NEEDBUF(8);\
 1378         _seqbuf[_seqbufptr] = EV_CHN_COMMON;\
 1379         _seqbuf[_seqbufptr+1] = (dev);\
 1380         _seqbuf[_seqbufptr+2] = (event);\
 1381         _seqbuf[_seqbufptr+3] = (chn);\
 1382         _seqbuf[_seqbufptr+4] = (p1);\
 1383         _seqbuf[_seqbufptr+5] = (p2);\
 1384         *(short *)&_seqbuf[_seqbufptr+6] = (w14);\
 1385         _SEQ_ADVBUF(8);}
 1386 /*
 1387  * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
 1388  * sending any MIDI bytes but it's absolutely not possible. Trying to do
 1389  * so _will_ cause problems with MPU401 intelligent mode).
 1390  *
 1391  * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be
 1392  * sent by calling SEQ_SYSEX() several times (there must be no other events
 1393  * between them). First sysex fragment must have 0xf0 in the first byte
 1394  * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
 1395  * between these sysex start and end markers cannot be larger than 0x7f. Also
 1396  * lengths of each fragments (except the last one) must be 6.
 1397  *
 1398  * Breaking the above rules may work with some MIDI ports but is likely to
 1399  * cause fatal problems with some other devices (such as MPU401).
 1400  */
 1401 #define SEQ_SYSEX(dev, buf, len) { \
 1402         int i, l=(len); if (l>6)l=6;\
 1403         _SEQ_NEEDBUF(8);\
 1404         _seqbuf[_seqbufptr] = EV_SYSEX;\
 1405         for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+1] = (buf)[i];\
 1406         for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+1] = 0xff;\
 1407         _SEQ_ADVBUF(8);}
 1408 
 1409 #define SEQ_CHN_PRESSURE(dev, chn, pressure) \
 1410         _CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)
 1411 
 1412 #define SEQ_SET_PATCH(dev, chn, patch) \
 1413         _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
 1414 
 1415 #define SEQ_CONTROL(dev, chn, controller, value) \
 1416         _CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
 1417 
 1418 #define SEQ_BENDER(dev, chn, value) \
 1419         _CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
 1420 
 1421 
 1422 #define SEQ_V2_X_CONTROL(dev, voice, controller, value) { \
 1423         _SEQ_NEEDBUF(8);\
 1424         _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
 1425         _seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
 1426         _seqbuf[_seqbufptr+2] = (dev);\
 1427         _seqbuf[_seqbufptr+3] = (voice);\
 1428         _seqbuf[_seqbufptr+4] = (controller);\
 1429         *(short *)&_seqbuf[_seqbufptr+5] = (value);\
 1430         _seqbuf[_seqbufptr+7] = 0;\
 1431         _SEQ_ADVBUF(8);}
 1432 
 1433 /*
 1434  * The following 5 macros are incorrectly implemented and obsolete.
 1435  * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
 1436  */
 1437 
 1438 #define SEQ_PITCHBEND(dev, voice, value) \
 1439         SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
 1440 #define SEQ_BENDER_RANGE(dev, voice, value) \
 1441         SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
 1442 #define SEQ_EXPRESSION(dev, voice, value) \
 1443         SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
 1444 #define SEQ_MAIN_VOLUME(dev, voice, value) \
 1445         SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
 1446 #define SEQ_PANNING(dev, voice, pos) \
 1447         SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
 1448 
 1449 /*
 1450  * Timing and synchronization macros
 1451  */
 1452 
 1453 #define _TIMER_EVENT(ev, parm)          { \
 1454         _SEQ_NEEDBUF(8);\
 1455         _seqbuf[_seqbufptr+0] = EV_TIMING; \
 1456         _seqbuf[_seqbufptr+1] = (ev); \
 1457         _seqbuf[_seqbufptr+2] = 0;\
 1458         _seqbuf[_seqbufptr+3] = 0;\
 1459         *(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
 1460         _SEQ_ADVBUF(8); \
 1461         }
 1462 
 1463 #define SEQ_START_TIMER()               _TIMER_EVENT(TMR_START, 0)
 1464 #define SEQ_STOP_TIMER()                _TIMER_EVENT(TMR_STOP, 0)
 1465 #define SEQ_CONTINUE_TIMER()            _TIMER_EVENT(TMR_CONTINUE, 0)
 1466 #define SEQ_WAIT_TIME(ticks)            _TIMER_EVENT(TMR_WAIT_ABS, ticks)
 1467 #define SEQ_DELTA_TIME(ticks)           _TIMER_EVENT(TMR_WAIT_REL, ticks)
 1468 #define SEQ_ECHO_BACK(key)              _TIMER_EVENT(TMR_ECHO, key)
 1469 #define SEQ_SET_TEMPO(value)            _TIMER_EVENT(TMR_TEMPO, value)
 1470 #define SEQ_SONGPOS(pos)                _TIMER_EVENT(TMR_SPP, pos)
 1471 #define SEQ_TIME_SIGNATURE(sig)         _TIMER_EVENT(TMR_TIMESIG, sig)
 1472 
 1473 /*
 1474  * Local control events
 1475  */
 1476 
 1477 #define _LOCAL_EVENT(ev, parm)          { \
 1478         _SEQ_NEEDBUF(8);\
 1479         _seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
 1480         _seqbuf[_seqbufptr+1] = (ev); \
 1481         _seqbuf[_seqbufptr+2] = 0;\
 1482         _seqbuf[_seqbufptr+3] = 0;\
 1483         *(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
 1484         _SEQ_ADVBUF(8); \
 1485         }
 1486 
 1487 #define SEQ_PLAYAUDIO(devmask)          _LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
 1488 /*
 1489  * Events for the level 1 interface only
 1490  */
 1491 
 1492 #define SEQ_MIDIOUT(device, byte)       { \
 1493         _SEQ_NEEDBUF(4);\
 1494         _seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
 1495         _seqbuf[_seqbufptr+1] = (byte);\
 1496         _seqbuf[_seqbufptr+2] = (device);\
 1497         _seqbuf[_seqbufptr+3] = 0;\
 1498         _SEQ_ADVBUF(4);}
 1499 
 1500 /*
 1501  * Patch loading.
 1502  */
 1503 #define SEQ_WRPATCH(patchx, len)        { \
 1504         if (_seqbufptr) seqbuf_dump(); \
 1505         if (write(seqfd, (char*)(patchx), len)==-1) \
 1506            perror("Write patch: /dev/sequencer"); \
 1507         }
 1508 
 1509 #define SEQ_WRPATCH2(patchx, len)       \
 1510         ( seqbuf_dump(), write(seqfd, (char*)(patchx), len) )
 1511 
 1512 #endif
 1513 
 1514 /*
 1515  * Here I have moved all the aliases for ioctl names.
 1516  */
 1517 
 1518 #define SNDCTL_DSP_SAMPLESIZE   SNDCTL_DSP_SETFMT
 1519 #define SOUND_PCM_WRITE_BITS    SNDCTL_DSP_SETFMT
 1520 #define SOUND_PCM_SETFMT        SNDCTL_DSP_SETFMT
 1521 
 1522 #define SOUND_PCM_WRITE_RATE    SNDCTL_DSP_SPEED
 1523 #define SOUND_PCM_POST          SNDCTL_DSP_POST
 1524 #define SOUND_PCM_RESET         SNDCTL_DSP_RESET
 1525 #define SOUND_PCM_SYNC          SNDCTL_DSP_SYNC
 1526 #define SOUND_PCM_SUBDIVIDE     SNDCTL_DSP_SUBDIVIDE
 1527 #define SOUND_PCM_SETFRAGMENT   SNDCTL_DSP_SETFRAGMENT
 1528 #define SOUND_PCM_GETFMTS       SNDCTL_DSP_GETFMTS
 1529 #define SOUND_PCM_GETOSPACE     SNDCTL_DSP_GETOSPACE
 1530 #define SOUND_PCM_GETISPACE     SNDCTL_DSP_GETISPACE
 1531 #define SOUND_PCM_NONBLOCK      SNDCTL_DSP_NONBLOCK
 1532 #define SOUND_PCM_GETCAPS       SNDCTL_DSP_GETCAPS
 1533 #define SOUND_PCM_GETTRIGGER    SNDCTL_DSP_GETTRIGGER
 1534 #define SOUND_PCM_SETTRIGGER    SNDCTL_DSP_SETTRIGGER
 1535 #define SOUND_PCM_SETSYNCRO     SNDCTL_DSP_SETSYNCRO
 1536 #define SOUND_PCM_GETIPTR       SNDCTL_DSP_GETIPTR
 1537 #define SOUND_PCM_GETOPTR       SNDCTL_DSP_GETOPTR
 1538 #define SOUND_PCM_MAPINBUF      SNDCTL_DSP_MAPINBUF
 1539 #define SOUND_PCM_MAPOUTBUF     SNDCTL_DSP_MAPOUTBUF
 1540 
 1541 /***********************************************************************/
 1542 
 1543 /**
 1544  * XXX OSSv4 defines -- some bits taken straight out of the new
 1545  * sys/soundcard.h bundled with recent OSS releases.
 1546  *
 1547  * NB:  These macros and structures will be reorganized and inserted
 1548  *      in appropriate places throughout this file once the code begins
 1549  *      to take shape.
 1550  *
 1551  * @todo reorganize layout more like the 4Front version
 1552  * @todo ask about maintaining __SIOWR vs. _IOWR ioctl cmd defines
 1553  */
 1554 
 1555 /**
 1556  * @note The @c OSSV4_EXPERIMENT macro is meant to wrap new development code
 1557  * in the sound system relevant to adopting 4Front's OSSv4 specification.
 1558  * Users should not enable this!  Really!
 1559  */
 1560 #if 0
 1561 # define OSSV4_EXPERIMENT 1
 1562 #else
 1563 # undef OSSV4_EXPERIMENT
 1564 #endif
 1565 
 1566 #ifdef SOUND_VERSION
 1567 # undef SOUND_VERSION
 1568 # define SOUND_VERSION  0x040000
 1569 #endif  /* !SOUND_VERSION */
 1570 
 1571 #define OSS_LONGNAME_SIZE       64
 1572 #define OSS_LABEL_SIZE          16
 1573 #define OSS_DEVNODE_SIZE        32
 1574 typedef char oss_longname_t[OSS_LONGNAME_SIZE];
 1575 typedef char oss_label_t[OSS_LABEL_SIZE];
 1576 typedef char oss_devnode_t[OSS_DEVNODE_SIZE];
 1577 
 1578 typedef struct audio_errinfo
 1579 {
 1580         int             play_underruns;
 1581         int             rec_overruns;
 1582         unsigned int    play_ptradjust;
 1583         unsigned int    rec_ptradjust;
 1584         int             play_errorcount;
 1585         int             rec_errorcount;
 1586         int             play_lasterror;
 1587         int             rec_lasterror;
 1588         long            play_errorparm;
 1589         long            rec_errorparm;
 1590         int             filler[16];
 1591 } audio_errinfo;
 1592 
 1593 #define SNDCTL_DSP_GETPLAYVOL           _IOR ('P', 24, int)
 1594 #define SNDCTL_DSP_SETPLAYVOL           _IOWR('P', 24, int)
 1595 #define SNDCTL_DSP_GETERROR             _IOR ('P', 25, audio_errinfo)
 1596 
 1597 
 1598 /*
 1599  ****************************************************************************
 1600  * Sync groups for audio devices
 1601  */
 1602 typedef struct oss_syncgroup
 1603 {
 1604   int id;
 1605   int mode;
 1606   int filler[16];
 1607 } oss_syncgroup;
 1608 
 1609 #define SNDCTL_DSP_SYNCGROUP            _IOWR('P', 28, oss_syncgroup)
 1610 #define SNDCTL_DSP_SYNCSTART            _IOW ('P', 29, int)
 1611 
 1612 /*
 1613  **************************************************************************
 1614  * "cooked" mode enables software based conversions for sample rate, sample
 1615  * format (bits) and number of channels (mono/stereo). These conversions are
 1616  * required with some devices that support only one sample rate or just stereo
 1617  * to let the applications to use other formats. The cooked mode is enabled by
 1618  * default. However it's necessary to disable this mode when mmap() is used or
 1619  * when very deterministic timing is required. SNDCTL_DSP_COOKEDMODE is an
 1620  * optional call introduced in OSS 3.9.6f. It's _error return must be ignored_
 1621  * since normally this call will return erno=EINVAL.
 1622  *
 1623  * SNDCTL_DSP_COOKEDMODE must be called immediately after open before doing
 1624  * anything else. Otherwise the call will not have any effect.
 1625  */
 1626 #define SNDCTL_DSP_COOKEDMODE           _IOW ('P', 30, int)
 1627 
 1628 /*
 1629  **************************************************************************
 1630  * SNDCTL_DSP_SILENCE and SNDCTL_DSP_SKIP are new calls in OSS 3.99.0
 1631  * that can be used to implement pause/continue during playback (no effect
 1632  * on recording).
 1633  */
 1634 #define SNDCTL_DSP_SILENCE              _IO  ('P', 31)
 1635 #define SNDCTL_DSP_SKIP                 _IO  ('P', 32)
 1636 
 1637 /*
 1638  ****************************************************************************
 1639  * Abort transfer (reset) functions for input and output
 1640  */
 1641 #define SNDCTL_DSP_HALT_INPUT           _IO  ('P', 33)
 1642 #define SNDCTL_DSP_RESET_INPUT  SNDCTL_DSP_HALT_INPUT   /* Old name */
 1643 #define SNDCTL_DSP_HALT_OUTPUT          _IO  ('P', 34)
 1644 #define SNDCTL_DSP_RESET_OUTPUT SNDCTL_DSP_HALT_OUTPUT  /* Old name */
 1645 
 1646 /*
 1647  ****************************************************************************
 1648  * Low water level control
 1649  */
 1650 #define SNDCTL_DSP_LOW_WATER            _IOW ('P', 34, int)
 1651 
 1652 /** @todo Get rid of OSS_NO_LONG_LONG references? */
 1653 
 1654 /*
 1655  ****************************************************************************
 1656  * 64 bit pointer support. Only available in environments that support
 1657  * the 64 bit (long long) integer type.
 1658  */
 1659 #ifndef OSS_NO_LONG_LONG
 1660 typedef struct
 1661 {
 1662   long long samples;
 1663   int fifo_samples;
 1664   int filler[32];               /* For future use */
 1665 } oss_count_t;
 1666 
 1667 #define SNDCTL_DSP_CURRENT_IPTR         _IOR ('P', 35, oss_count_t)
 1668 #define SNDCTL_DSP_CURRENT_OPTR         _IOR ('P', 36, oss_count_t)
 1669 #endif
 1670 
 1671 /*
 1672  ****************************************************************************
 1673  * Interface for selecting recording sources and playback output routings.
 1674  */
 1675 #define SNDCTL_DSP_GET_RECSRC_NAMES     _IOR ('P', 37, oss_mixer_enuminfo)
 1676 #define SNDCTL_DSP_GET_RECSRC           _IOR ('P', 38, int)
 1677 #define SNDCTL_DSP_SET_RECSRC           _IOWR('P', 38, int)
 1678 
 1679 #define SNDCTL_DSP_GET_PLAYTGT_NAMES    _IOR ('P', 39, oss_mixer_enuminfo)
 1680 #define SNDCTL_DSP_GET_PLAYTGT          _IOR ('P', 40, int)
 1681 #define SNDCTL_DSP_SET_PLAYTGT          _IOWR('P', 40, int)
 1682 #define SNDCTL_DSP_GETRECVOL            _IOR ('P', 41, int)
 1683 #define SNDCTL_DSP_SETRECVOL            _IOWR('P', 41, int)
 1684 
 1685 /*
 1686  ***************************************************************************
 1687  * Some calls for setting the channel assignment with multi channel devices
 1688  * (see the manual for details).                                                 */
 1689 #define SNDCTL_DSP_GET_CHNORDER         _IOR ('P', 42, unsigned long long)
 1690 #define SNDCTL_DSP_SET_CHNORDER         _IOWR('P', 42, unsigned long long)
 1691 #       define CHID_UNDEF       0
 1692 #       define CHID_L           1
 1693 #       define CHID_R           2
 1694 #       define CHID_C           3
 1695 #       define CHID_LFE         4
 1696 #       define CHID_LS          5
 1697 #       define CHID_RS          6
 1698 #       define CHID_LR          7
 1699 #       define CHID_RR          8
 1700 #define CHNORDER_UNDEF          0x0000000000000000ULL
 1701 #define CHNORDER_NORMAL         0x0000000087654321ULL
 1702 
 1703 #define MAX_PEAK_CHANNELS       128
 1704 typedef unsigned short oss_peaks_t[MAX_PEAK_CHANNELS];
 1705 #define SNDCTL_DSP_GETIPEAKS            _IOR('P', 43, oss_peaks_t)
 1706 #define SNDCTL_DSP_GETOPEAKS            _IOR('P', 44, oss_peaks_t)
 1707 #define SNDCTL_DSP_POLICY               _IOW('P', 45, int)    /* See the manual */
 1708 
 1709 /*
 1710  ****************************************************************************
 1711  * Few ioctl calls that are not official parts of OSS. They have been used
 1712  * by few freeware implementations of OSS.
 1713  */
 1714 #define SNDCTL_DSP_GETCHANNELMASK       _IOWR('P', 64, int)
 1715 #define SNDCTL_DSP_BIND_CHANNEL         _IOWR('P', 65, int)
 1716 #define DSP_BIND_QUERY                  0x00000000
 1717 #define DSP_BIND_FRONT                  0x00000001
 1718 #define DSP_BIND_SURR                   0x00000002
 1719 #define DSP_BIND_CENTER_LFE             0x00000004
 1720 #define DSP_BIND_HANDSET                0x00000008
 1721 #define DSP_BIND_MIC                    0x00000010
 1722 #define DSP_BIND_MODEM1                 0x00000020
 1723 #define DSP_BIND_MODEM2                 0x00000040
 1724 #define DSP_BIND_I2S                    0x00000080
 1725 #define DSP_BIND_SPDIF                  0x00000100
 1726 #define DSP_BIND_REAR                   0x00000200
 1727 
 1728 /*
 1729  * OSS_SYSIFO is obsolete. Use SNDCTL_SYSINFO insteads.
 1730  */
 1731 #define OSS_GETVERSION                  _IOR ('M', 118, int)
 1732 
 1733 /**
 1734  * @brief       Argument for SNDCTL_SYSINFO ioctl.
 1735  *
 1736  * For use w/ the SNDCTL_SYSINFO ioctl available on audio (/dev/dsp*),
 1737  * mixer, and MIDI devices.
 1738  */
 1739 typedef struct oss_sysinfo
 1740 {
 1741         char    product[32];    /* For example OSS/Free, OSS/Linux or
 1742                                    OSS/Solaris */
 1743         char    version[32];    /* For example 4.0a */
 1744         int     versionnum;     /* See OSS_GETVERSION */
 1745         char    options[128];   /* Reserved */
 1746 
 1747         int     numaudios;      /* # of audio/dsp devices */
 1748         int     openedaudio[8]; /* Bit mask telling which audio devices
 1749                                    are busy */
 1750 
 1751         int     numsynths;      /* # of availavle synth devices */
 1752         int     nummidis;       /* # of available MIDI ports */
 1753         int     numtimers;      /* # of available timer devices */
 1754         int     nummixers;      /* # of mixer devices */
 1755 
 1756         int     openedmidi[8];  /* Bit mask telling which midi devices
 1757                                    are busy */
 1758         int     numcards;       /* Number of sound cards in the system */
 1759         int     numaudioengines;        /* Number of audio engines in the system */
 1760         char    license[16];    /* For example "GPL" or "CDDL" */
 1761         char    revision_info[256];     /* For internal use */
 1762         int     filler[172];    /* For future expansion (set to -1) */
 1763 } oss_sysinfo;
 1764 
 1765 typedef struct oss_mixext
 1766 {
 1767   int dev;                      /* Mixer device number */
 1768   int ctrl;                     /* Controller number */
 1769   int type;                     /* Entry type */
 1770 #       define MIXT_DEVROOT      0      /* Device root entry */
 1771 #       define MIXT_GROUP        1      /* Controller group */
 1772 #       define MIXT_ONOFF        2      /* OFF (0) or ON (1) */
 1773 #       define MIXT_ENUM         3      /* Enumerated (0 to maxvalue) */
 1774 #       define MIXT_MONOSLIDER   4      /* Mono slider (0 to 100) */
 1775 #       define MIXT_STEREOSLIDER 5      /* Stereo slider (dual 0 to 100) */
 1776 #       define MIXT_MESSAGE      6      /* (Readable) textual message */
 1777 #       define MIXT_MONOVU       7      /* VU meter value (mono) */
 1778 #       define MIXT_STEREOVU     8      /* VU meter value (stereo) */
 1779 #       define MIXT_MONOPEAK     9      /* VU meter peak value (mono) */
 1780 #       define MIXT_STEREOPEAK  10      /* VU meter peak value (stereo) */
 1781 #       define MIXT_RADIOGROUP  11      /* Radio button group */
 1782 #       define MIXT_MARKER      12      /* Separator between normal and extension entries */
 1783 #       define MIXT_VALUE       13      /* Decimal value entry */
 1784 #       define MIXT_HEXVALUE    14      /* Hexadecimal value entry */
 1785 #       define MIXT_MONODB      15      /* Mono atten. slider (0 to -144) */
 1786 #       define MIXT_STEREODB    16      /* Stereo atten. slider (dual 0 to -144) */
 1787 #       define MIXT_SLIDER      17      /* Slider (mono) with full integer range */
 1788 #       define MIXT_3D          18
 1789 
 1790   /* Possible value range (minvalue to maxvalue) */
 1791   /* Note that maxvalue may also be smaller than minvalue */
 1792   int maxvalue;
 1793   int minvalue;
 1794 
 1795   int flags;
 1796 #       define MIXF_READABLE    0x00000001      /* Has readable value */
 1797 #       define MIXF_WRITEABLE   0x00000002      /* Has writeable value */
 1798 #       define MIXF_POLL        0x00000004      /* May change itself */
 1799 #       define MIXF_HZ          0x00000008      /* Herz scale */
 1800 #       define MIXF_STRING      0x00000010      /* Use dynamic extensions for value */
 1801 #       define MIXF_DYNAMIC     0x00000010      /* Supports dynamic extensions */
 1802 #       define MIXF_OKFAIL      0x00000020      /* Interpret value as 1=OK, 0=FAIL */
 1803 #       define MIXF_FLAT        0x00000040      /* Flat vertical space requirements */
 1804 #       define MIXF_LEGACY      0x00000080      /* Legacy mixer control group */
 1805   char id[16];                  /* Mnemonic ID (mainly for internal use) */
 1806   int parent;                   /* Entry# of parent (group) node (-1 if root) */
 1807 
 1808   int dummy;                    /* Internal use */
 1809 
 1810   int timestamp;
 1811 
 1812   char data[64];                /* Misc data (entry type dependent) */
 1813   unsigned char enum_present[32];       /* Mask of allowed enum values */
 1814   int control_no;               /* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
 1815   /* (-1 means not indicated) */
 1816 
 1817 /*
 1818  * The desc field is reserved for internal purposes of OSS. It should not be 
 1819  * used by applications.
 1820  */
 1821   unsigned int desc;
 1822 #define MIXEXT_SCOPE_MASK                       0x0000003f
 1823 #define MIXEXT_SCOPE_OTHER                      0x00000000
 1824 #define MIXEXT_SCOPE_INPUT                      0x00000001
 1825 #define MIXEXT_SCOPE_OUTPUT                     0x00000002
 1826 #define MIXEXT_SCOPE_MONITOR                    0x00000003
 1827 #define MIXEXT_SCOPE_RECSWITCH                  0x00000004
 1828 
 1829   char extname[32];
 1830   int update_counter;
 1831   int filler[7];
 1832 } oss_mixext;
 1833 
 1834 typedef struct oss_mixext_root
 1835 {
 1836   char id[16];
 1837   char name[48];
 1838 } oss_mixext_root;
 1839 
 1840 typedef struct oss_mixer_value
 1841 {
 1842   int dev;
 1843   int ctrl;
 1844   int value;
 1845   int flags;                    /* Reserved for future use. Initialize to 0 */
 1846   int timestamp;                /* Must be set to oss_mixext.timestamp */
 1847   int filler[8];                /* Reserved for future use. Initialize to 0 */
 1848 } oss_mixer_value;
 1849 
 1850 #define OSS_ENUM_MAXVALUE       255
 1851 typedef struct oss_mixer_enuminfo
 1852 {
 1853         int     dev;
 1854         int     ctrl;
 1855         int     nvalues;
 1856         int     version;                  /* Read the manual */
 1857         short   strindex[OSS_ENUM_MAXVALUE];
 1858         char    strings[3000];
 1859 } oss_mixer_enuminfo;
 1860 
 1861 #define OPEN_READ       PCM_ENABLE_INPUT
 1862 #define OPEN_WRITE      PCM_ENABLE_OUTPUT
 1863 #define OPEN_READWRITE  (OPEN_READ|OPEN_WRITE)
 1864 
 1865 /**
 1866  * @brief       Argument for SNDCTL_AUDIOINFO ioctl.
 1867  *
 1868  * For use w/ the SNDCTL_AUDIOINFO ioctl available on audio (/dev/dsp*)
 1869  * devices.
 1870  */
 1871 typedef struct oss_audioinfo
 1872 {
 1873         int     dev;            /* Audio device number */
 1874         char    name[64];
 1875         int     busy;           /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
 1876         int     pid;
 1877         int     caps;           /* DSP_CAP_INPUT, DSP_CAP_OUTPUT */
 1878         int     iformats;
 1879         int     oformats;
 1880         int     magic;          /* Reserved for internal use */
 1881         char    cmd[64];        /* Command using the device (if known) */
 1882         int     card_number;
 1883         int     port_number;
 1884         int     mixer_dev;
 1885         int     real_device;    /* Obsolete field. Replaced by devnode */
 1886         int     enabled;        /* 1=enabled, 0=device not ready at this
 1887                                    moment */
 1888         int     flags;          /* For internal use only - no practical
 1889                                    meaning */
 1890         int     min_rate;       /* Sample rate limits */
 1891         int     max_rate;
 1892         int     min_channels;   /* Number of channels supported */
 1893         int     max_channels;
 1894         int     binding;        /* DSP_BIND_FRONT, etc. 0 means undefined */
 1895         int     rate_source;
 1896         char    handle[32];
 1897         #define OSS_MAX_SAMPLE_RATES    20      /* Cannot be changed  */
 1898         unsigned int nrates;
 1899         unsigned int rates[OSS_MAX_SAMPLE_RATES]; /* Please read the manual before using these */
 1900         oss_longname_t  song_name;      /* Song name (if given) */
 1901         oss_label_t     label;          /* Device label (if given) */
 1902         int             latency;        /* In usecs, -1=unknown */
 1903         oss_devnode_t   devnode;        /* Device special file name (inside
 1904                                            /dev) */
 1905         int next_play_engine;
 1906         int next_rec_engine;
 1907         int filler[184];
 1908 } oss_audioinfo;
 1909 
 1910 typedef struct oss_mixerinfo
 1911 {
 1912   int dev;
 1913   char id[16];
 1914   char name[32];
 1915   int modify_counter;
 1916   int card_number;
 1917   int port_number;
 1918   char handle[32];
 1919   int magic;                    /* Reserved */
 1920   int enabled;                  /* Reserved */
 1921   int caps;
 1922 #define MIXER_CAP_VIRTUAL                               0x00000001
 1923   int flags;                    /* Reserved */
 1924   int nrext;
 1925   /*
 1926    * The priority field can be used to select the default (motherboard)
 1927    * mixer device. The mixer with the highest priority is the
 1928    * most preferred one. -2 or less means that this device cannot be used
 1929    * as the default mixer.
 1930    */
 1931   int priority;
 1932   int filler[254];              /* Reserved */
 1933 } oss_mixerinfo;
 1934 
 1935 typedef struct oss_midi_info
 1936 {
 1937   int dev;                      /* Midi device number */
 1938   char name[64];
 1939   int busy;                     /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
 1940   int pid;
 1941   char cmd[64];                 /* Command using the device (if known) */
 1942   int caps;
 1943 #define MIDI_CAP_MPU401         0x00000001      /**** OBSOLETE ****/
 1944 #define MIDI_CAP_INPUT          0x00000002
 1945 #define MIDI_CAP_OUTPUT         0x00000004
 1946 #define MIDI_CAP_INOUT          (MIDI_CAP_INPUT|MIDI_CAP_OUTPUT)
 1947 #define MIDI_CAP_VIRTUAL        0x00000008      /* Pseudo device */
 1948 #define MIDI_CAP_MTCINPUT       0x00000010      /* Supports SNDCTL_MIDI_MTCINPUT */
 1949 #define MIDI_CAP_CLIENT         0x00000020      /* Virtual client side device */
 1950 #define MIDI_CAP_SERVER         0x00000040      /* Virtual server side device */
 1951 #define MIDI_CAP_INTERNAL       0x00000080      /* Internal (synth) device */
 1952 #define MIDI_CAP_EXTERNAL       0x00000100      /* external (MIDI port) device */
 1953 #define MIDI_CAP_PTOP           0x00000200      /* Point to point link to one device */
 1954 #define MIDI_CAP_MTC            0x00000400      /* MTC/SMPTE (control) device */
 1955   int magic;                    /* Reserved for internal use */
 1956   int card_number;
 1957   int port_number;
 1958   int enabled;                  /* 1=enabled, 0=device not ready at this moment */
 1959   int flags;                    /* For internal use only - no practical meaning */
 1960   char handle[32];
 1961   oss_longname_t song_name;     /* Song name (if known) */
 1962   oss_label_t label;            /* Device label (if given) */
 1963   int latency;                  /* In usecs, -1=unknown */
 1964   int filler[244];
 1965 } oss_midi_info;
 1966 
 1967 typedef struct oss_card_info
 1968 {
 1969   int card;
 1970   char shortname[16];
 1971   char longname[128];
 1972   int flags;
 1973   char hw_info[400];
 1974   int intr_count, ack_count;
 1975   int filler[154];
 1976 } oss_card_info;
 1977 
 1978 #define SNDCTL_SYSINFO          _IOR ('X', 1, oss_sysinfo)
 1979 #define OSS_SYSINFO             SNDCTL_SYSINFO /* Old name */
 1980 
 1981 #define SNDCTL_MIX_NRMIX        _IOR ('X', 2, int)
 1982 #define SNDCTL_MIX_NREXT        _IOWR('X', 3, int)
 1983 #define SNDCTL_MIX_EXTINFO      _IOWR('X', 4, oss_mixext)
 1984 #define SNDCTL_MIX_READ         _IOWR('X', 5, oss_mixer_value)
 1985 #define SNDCTL_MIX_WRITE        _IOWR('X', 6, oss_mixer_value)
 1986 
 1987 #define SNDCTL_AUDIOINFO        _IOWR('X', 7, oss_audioinfo)
 1988 #define SNDCTL_MIX_ENUMINFO     _IOWR('X', 8, oss_mixer_enuminfo)
 1989 #define SNDCTL_MIDIINFO         _IOWR('X', 9, oss_midi_info)
 1990 #define SNDCTL_MIXERINFO        _IOWR('X',10, oss_mixerinfo)
 1991 #define SNDCTL_CARDINFO         _IOWR('X',11, oss_card_info)
 1992 #define SNDCTL_ENGINEINFO       _IOWR('X',12, oss_audioinfo)
 1993 #define SNDCTL_AUDIOINFO_EX     _IOWR('X',13, oss_audioinfo)
 1994 
 1995 /*
 1996  * Few more "globally" available ioctl calls.
 1997  */
 1998 #define SNDCTL_SETSONG          _IOW ('Y', 2, oss_longname_t)
 1999 #define SNDCTL_GETSONG          _IOR ('Y', 2, oss_longname_t)
 2000 #define SNDCTL_SETNAME          _IOW ('Y', 3, oss_longname_t)
 2001 #define SNDCTL_SETLABEL         _IOW ('Y', 4, oss_label_t)
 2002 #define SNDCTL_GETLABEL         _IOR ('Y', 4, oss_label_t)
 2003 
 2004 #endif  /* !_SYS_SOUNDCARD_H_ */

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