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  * SPDX-License-Identifier: BSD-2-Clause
    7  *
    8  * Copyright by Hannu Savolainen 1993 / 4Front Technologies 1993-2006
    9  * Modified for the new FreeBSD sound driver by Luigi Rizzo, 1997
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above
   17  *    copyright notice, this list of conditions and the following
   18  *    disclaimer in the documentation and/or other materials provided
   19  *    with the distribution.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
   22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   24  * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR
   25  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   32  * POSSIBILITY OF SUCH DAMAGE.
   33  *
   34  * $FreeBSD: stable/12/sys/sys/soundcard.h 326823 2017-12-13 16:13:17Z pfg $
   35  */
   36 
   37 /*
   38  * Unless coordinating changes with 4Front Technologies, do NOT make any
   39  * modifications to ioctl commands, types, etc. that would break
   40  * compatibility with the OSS API.
   41  */
   42 
   43 #ifndef _SYS_SOUNDCARD_H_
   44 #define _SYS_SOUNDCARD_H_
   45  /*
   46   * If you make modifications to this file, please contact me before
   47   * distributing the modified version. There is already enough
   48   * diversity in the world.
   49   *
   50   * Regards,
   51   * Hannu Savolainen
   52   * hannu@voxware.pp.fi
   53   *
   54   **********************************************************************
   55   * PS. The Hacker's Guide to VoxWare available from
   56   *     nic.funet.fi:pub/Linux/ALPHA/sound. The file is
   57   *     snd-sdk-doc-0.1.ps.gz (gzipped postscript). It contains
   58   *     some useful information about programming with VoxWare.
   59   *     (NOTE! The pub/Linux/ALPHA/ directories are hidden. You have
   60   *     to cd inside them before the files are accessible.)
   61   **********************************************************************
   62   */
   63 
   64 /*
   65  * SOUND_VERSION is only used by the voxware driver. Hopefully apps
   66  * should not depend on it, but rather look at the capabilities
   67  * of the driver in the kernel!
   68  */
   69 #define SOUND_VERSION  301
   70 #define VOXWARE         /* does this have any use ? */
   71 
   72 /*
   73  * Supported card ID numbers (Should be somewhere else? We keep
   74  * them here just for compativility with the old driver, but these
   75  * constants are of little or no use).
   76  */
   77 
   78 #define SNDCARD_ADLIB          1
   79 #define SNDCARD_SB             2
   80 #define SNDCARD_PAS            3
   81 #define SNDCARD_GUS            4
   82 #define SNDCARD_MPU401         5
   83 #define SNDCARD_SB16           6
   84 #define SNDCARD_SB16MIDI       7
   85 #define SNDCARD_UART6850       8
   86 #define SNDCARD_GUS16          9
   87 #define SNDCARD_MSS            10
   88 #define SNDCARD_PSS            11
   89 #define SNDCARD_SSCAPE         12
   90 #define SNDCARD_PSS_MPU        13
   91 #define SNDCARD_PSS_MSS        14
   92 #define SNDCARD_SSCAPE_MSS     15
   93 #define SNDCARD_TRXPRO         16
   94 #define SNDCARD_TRXPRO_SB      17
   95 #define SNDCARD_TRXPRO_MPU     18
   96 #define SNDCARD_MAD16          19
   97 #define SNDCARD_MAD16_MPU      20
   98 #define SNDCARD_CS4232         21
   99 #define SNDCARD_CS4232_MPU     22
  100 #define SNDCARD_MAUI           23
  101 #define SNDCARD_PSEUDO_MSS     24
  102 #define SNDCARD_AWE32          25
  103 #define SNDCARD_NSS            26
  104 #define SNDCARD_UART16550      27
  105 #define SNDCARD_OPL            28
  106 
  107 #include <sys/types.h>
  108 #include <machine/endian.h>
  109 #ifndef _IOWR
  110 #include <sys/ioccom.h>
  111 #endif  /* !_IOWR */
  112 
  113 /*
  114  * The first part of this file contains the new FreeBSD sound ioctl
  115  * interface. Tries to minimize the number of different ioctls, and
  116  * to be reasonably general.
  117  *
  118  * 970821: some of the new calls have not been implemented yet.
  119  */
  120 
  121 /*
  122  * the following three calls extend the generic file descriptor
  123  * interface. AIONWRITE is the dual of FIONREAD, i.e. returns the max
  124  * number of bytes for a write operation to be non-blocking.
  125  *
  126  * AIOGSIZE/AIOSSIZE are used to change the behaviour of the device,
  127  * from a character device (default) to a block device. In block mode,
  128  * (not to be confused with blocking mode) the main difference for the
  129  * application is that select() will return only when a complete
  130  * block can be read/written to the device, whereas in character mode
  131  * select will return true when one byte can be exchanged. For audio
  132  * devices, character mode makes select almost useless since one byte
  133  * will always be ready by the next sample time (which is often only a
  134  * handful of microseconds away).
  135  * Use a size of 0 or 1 to return to character mode.
  136  */
  137 #define AIONWRITE   _IOR('A', 10, int)   /* get # bytes to write */
  138 struct snd_size {
  139     int play_size;
  140     int rec_size;
  141 };
  142 #define AIOGSIZE    _IOR('A', 11, struct snd_size)/* read current blocksize */
  143 #define AIOSSIZE    _IOWR('A', 11, struct snd_size)  /* sets blocksize */
  144 
  145 /*
  146  * The following constants define supported audio formats. The
  147  * encoding follows voxware conventions, i.e. 1 bit for each supported
  148  * format. We extend it by using bit 31 (RO) to indicate full-duplex
  149  * capability, and bit 29 (RO) to indicate that the card supports/
  150  * needs different formats on capture & playback channels.
  151  * Bit 29 (RW) is used to indicate/ask stereo.
  152  *
  153  * The number of bits required to store the sample is:
  154  *  o  4 bits for the IDA ADPCM format,
  155  *  o  8 bits for 8-bit formats, mu-law and A-law,
  156  *  o  16 bits for the 16-bit formats, and
  157  *  o  32 bits for the 24/32-bit formats.
  158  *  o  undefined for the MPEG audio format.
  159  */
  160 
  161 #define AFMT_QUERY      0x00000000      /* Return current format */
  162 #define AFMT_MU_LAW     0x00000001      /* Logarithmic mu-law */
  163 #define AFMT_A_LAW      0x00000002      /* Logarithmic A-law */
  164 #define AFMT_IMA_ADPCM  0x00000004      /* A 4:1 compressed format where 16-bit
  165                                          * squence represented using the
  166                                          * the average 4 bits per sample */
  167 #define AFMT_U8         0x00000008      /* Unsigned 8-bit */
  168 #define AFMT_S16_LE     0x00000010      /* Little endian signed 16-bit */
  169 #define AFMT_S16_BE     0x00000020      /* Big endian signed 16-bit */
  170 #define AFMT_S8         0x00000040      /* Signed 8-bit */
  171 #define AFMT_U16_LE     0x00000080      /* Little endian unsigned 16-bit */
  172 #define AFMT_U16_BE     0x00000100      /* Big endian unsigned 16-bit */
  173 #define AFMT_MPEG       0x00000200      /* MPEG MP2/MP3 audio */
  174 #define AFMT_AC3        0x00000400      /* Dolby Digital AC3 */
  175 
  176 /*
  177  * 32-bit formats below used for 24-bit audio data where the data is stored
  178  * in the 24 most significant bits and the least significant bits are not used
  179  * (should be set to 0).
  180  */
  181 #define AFMT_S32_LE     0x00001000      /* Little endian signed 32-bit */
  182 #define AFMT_S32_BE     0x00002000      /* Big endian signed 32-bit */
  183 #define AFMT_U32_LE     0x00004000      /* Little endian unsigned 32-bit */
  184 #define AFMT_U32_BE     0x00008000      /* Big endian unsigned 32-bit */
  185 #define AFMT_S24_LE     0x00010000      /* Little endian signed 24-bit */
  186 #define AFMT_S24_BE     0x00020000      /* Big endian signed 24-bit */
  187 #define AFMT_U24_LE     0x00040000      /* Little endian unsigned 24-bit */
  188 #define AFMT_U24_BE     0x00080000      /* Big endian unsigned 24-bit */
  189 
  190 /* Machine dependent AFMT_* definitions. */
  191 #if BYTE_ORDER == LITTLE_ENDIAN
  192 #define AFMT_S16_NE     AFMT_S16_LE
  193 #define AFMT_S24_NE     AFMT_S24_LE
  194 #define AFMT_S32_NE     AFMT_S32_LE
  195 #define AFMT_U16_NE     AFMT_U16_LE
  196 #define AFMT_U24_NE     AFMT_U24_LE
  197 #define AFMT_U32_NE     AFMT_U32_LE
  198 #define AFMT_S16_OE     AFMT_S16_BE
  199 #define AFMT_S24_OE     AFMT_S24_BE
  200 #define AFMT_S32_OE     AFMT_S32_BE
  201 #define AFMT_U16_OE     AFMT_U16_BE
  202 #define AFMT_U24_OE     AFMT_U24_BE
  203 #define AFMT_U32_OE     AFMT_U32_BE
  204 #else
  205 #define AFMT_S16_OE     AFMT_S16_LE
  206 #define AFMT_S24_OE     AFMT_S24_LE
  207 #define AFMT_S32_OE     AFMT_S32_LE
  208 #define AFMT_U16_OE     AFMT_U16_LE
  209 #define AFMT_U24_OE     AFMT_U24_LE
  210 #define AFMT_U32_OE     AFMT_U32_LE
  211 #define AFMT_S16_NE     AFMT_S16_BE
  212 #define AFMT_S24_NE     AFMT_S24_BE
  213 #define AFMT_S32_NE     AFMT_S32_BE
  214 #define AFMT_U16_NE     AFMT_U16_BE
  215 #define AFMT_U24_NE     AFMT_U24_BE
  216 #define AFMT_U32_NE     AFMT_U32_BE
  217 #endif
  218 
  219 #define AFMT_STEREO     0x10000000      /* can do/want stereo   */
  220 
  221 /*
  222  * the following are really capabilities
  223  */
  224 #define AFMT_WEIRD      0x20000000      /* weird hardware...    */
  225     /*
  226      * AFMT_WEIRD reports that the hardware might need to operate
  227      * with different formats in the playback and capture
  228      * channels when operating in full duplex.
  229      * As an example, SoundBlaster16 cards only support U8 in one
  230      * direction and S16 in the other one, and applications should
  231      * be aware of this limitation.
  232      */
  233 #define AFMT_FULLDUPLEX 0x80000000      /* can do full duplex   */
  234 
  235 /*
  236  * The following structure is used to get/set format and sampling rate.
  237  * While it would be better to have things such as stereo, bits per
  238  * sample, endiannes, etc split in different variables, it turns out
  239  * that formats are not that many, and not all combinations are possible.
  240  * So we followed the Voxware approach of associating one bit to each
  241  * format.
  242  */
  243 
  244 typedef struct _snd_chan_param {
  245     u_long      play_rate;      /* sampling rate                        */
  246     u_long      rec_rate;       /* sampling rate                        */
  247     u_long      play_format;    /* everything describing the format     */
  248     u_long      rec_format;     /* everything describing the format     */
  249 } snd_chan_param;
  250 #define AIOGFMT    _IOR('f', 12, snd_chan_param)   /* get format */
  251 #define AIOSFMT    _IOWR('f', 12, snd_chan_param)  /* sets format */
  252 
  253 /*
  254  * The following structure is used to get/set the mixer setting.
  255  * Up to 32 mixers are supported, each one with up to 32 channels.
  256  */
  257 typedef struct _snd_mix_param {
  258     u_char      subdev; /* which output                         */
  259     u_char      line;   /* which input                          */
  260     u_char      left,right; /* volumes, 0..255, 0 = mute        */
  261 } snd_mix_param ;
  262 
  263 /* XXX AIOGMIX, AIOSMIX not implemented yet */
  264 #define AIOGMIX _IOWR('A', 13, snd_mix_param)   /* return mixer status */
  265 #define AIOSMIX _IOWR('A', 14, snd_mix_param)   /* sets mixer status   */
  266 
  267 /*
  268  * channel specifiers used in AIOSTOP and AIOSYNC
  269  */
  270 #define AIOSYNC_PLAY    0x1     /* play chan */
  271 #define AIOSYNC_CAPTURE 0x2     /* capture chan */
  272 /* AIOSTOP stop & flush a channel, returns the residual count */
  273 #define AIOSTOP _IOWR ('A', 15, int)
  274 
  275 /* alternate method used to notify the sync condition */
  276 #define AIOSYNC_SIGNAL  0x100
  277 #define AIOSYNC_SELECT  0x200
  278 
  279 /* what the 'pos' field refers to */
  280 #define AIOSYNC_READY   0x400
  281 #define AIOSYNC_FREE    0x800
  282 
  283 typedef struct _snd_sync_parm {
  284     long chan ; /* play or capture channel, plus modifier */
  285     long pos;
  286 } snd_sync_parm;
  287 #define AIOSYNC _IOWR ('A', 15, snd_sync_parm)  /* misc. synchronization */
  288 
  289 /*
  290  * The following is used to return device capabilities. If the structure
  291  * passed to the ioctl is zeroed, default values are returned for rate
  292  * and formats, a bitmap of available mixers is returned, and values
  293  * (inputs, different levels) for the first one are returned.
  294  *
  295  * If  formats, mixers, inputs are instantiated, then detailed info
  296  * are returned depending on the call.
  297  */
  298 typedef struct _snd_capabilities {
  299     u_long      rate_min, rate_max;     /* min-max sampling rate */
  300     u_long      formats;
  301     u_long      bufsize; /* DMA buffer size */
  302     u_long      mixers; /* bitmap of available mixers */
  303     u_long      inputs; /* bitmap of available inputs (per mixer) */
  304     u_short     left, right;    /* how many levels are supported */
  305 } snd_capabilities;
  306 #define AIOGCAP _IOWR('A', 15, snd_capabilities)        /* get capabilities */
  307 
  308 /*
  309  * here is the old (Voxware) ioctl interface
  310  */
  311 
  312 /*
  313  * IOCTL Commands for /dev/sequencer
  314  */
  315 
  316 #define SNDCTL_SEQ_RESET        _IO  ('Q', 0)
  317 #define SNDCTL_SEQ_SYNC         _IO  ('Q', 1)
  318 #define SNDCTL_SYNTH_INFO       _IOWR('Q', 2, struct synth_info)
  319 #define SNDCTL_SEQ_CTRLRATE     _IOWR('Q', 3, int) /* Set/get timer res.(hz) */
  320 #define SNDCTL_SEQ_GETOUTCOUNT  _IOR ('Q', 4, int)
  321 #define SNDCTL_SEQ_GETINCOUNT   _IOR ('Q', 5, int)
  322 #define SNDCTL_SEQ_PERCMODE     _IOW ('Q', 6, int)
  323 #define SNDCTL_FM_LOAD_INSTR    _IOW ('Q', 7, struct sbi_instrument)    /* Valid for FM only */
  324 #define SNDCTL_SEQ_TESTMIDI     _IOW ('Q', 8, int)
  325 #define SNDCTL_SEQ_RESETSAMPLES _IOW ('Q', 9, int)
  326 #define SNDCTL_SEQ_NRSYNTHS     _IOR ('Q',10, int)
  327 #define SNDCTL_SEQ_NRMIDIS      _IOR ('Q',11, int)
  328 #define SNDCTL_MIDI_INFO        _IOWR('Q',12, struct midi_info)
  329 #define SNDCTL_SEQ_THRESHOLD    _IOW ('Q',13, int)
  330 #define SNDCTL_SEQ_TRESHOLD     SNDCTL_SEQ_THRESHOLD    /* there was once a typo */
  331 #define SNDCTL_SYNTH_MEMAVL     _IOWR('Q',14, int) /* in=dev#, out=memsize */
  332 #define SNDCTL_FM_4OP_ENABLE    _IOW ('Q',15, int) /* in=dev# */
  333 #define SNDCTL_PMGR_ACCESS      _IOWR('Q',16, struct patmgr_info)
  334 #define SNDCTL_SEQ_PANIC        _IO  ('Q',17)
  335 #define SNDCTL_SEQ_OUTOFBAND    _IOW ('Q',18, struct seq_event_rec)
  336 #define SNDCTL_SEQ_GETTIME      _IOR ('Q',19, int)
  337 
  338 struct seq_event_rec {
  339         u_char arr[8];
  340 };
  341 
  342 #define SNDCTL_TMR_TIMEBASE     _IOWR('T', 1, int)
  343 #define SNDCTL_TMR_START        _IO  ('T', 2)
  344 #define SNDCTL_TMR_STOP         _IO  ('T', 3)
  345 #define SNDCTL_TMR_CONTINUE     _IO  ('T', 4)
  346 #define SNDCTL_TMR_TEMPO        _IOWR('T', 5, int)
  347 #define SNDCTL_TMR_SOURCE       _IOWR('T', 6, int)
  348 #   define TMR_INTERNAL         0x00000001
  349 #   define TMR_EXTERNAL         0x00000002
  350 #       define TMR_MODE_MIDI    0x00000010
  351 #       define TMR_MODE_FSK     0x00000020
  352 #       define TMR_MODE_CLS     0x00000040
  353 #       define TMR_MODE_SMPTE   0x00000080
  354 #define SNDCTL_TMR_METRONOME    _IOW ('T', 7, int)
  355 #define SNDCTL_TMR_SELECT       _IOW ('T', 8, int)
  356 
  357 /*
  358  *      Endian aware patch key generation algorithm.
  359  */
  360 
  361 #if defined(_AIX) || defined(AIX)
  362 #  define _PATCHKEY(id) (0xfd00|id)
  363 #else
  364 #  define _PATCHKEY(id) ((id<<8)|0xfd)
  365 #endif
  366 
  367 /*
  368  *      Sample loading mechanism for internal synthesizers (/dev/sequencer)
  369  *      The following patch_info structure has been designed to support
  370  *      Gravis UltraSound. It tries to be universal format for uploading
  371  *      sample based patches but is probably too limited.
  372  */
  373 
  374 struct patch_info {
  375 /*              u_short key;             Use GUS_PATCH here */
  376         short key;               /* Use GUS_PATCH here */
  377 #define GUS_PATCH       _PATCHKEY(0x04)
  378 #define OBSOLETE_GUS_PATCH      _PATCHKEY(0x02)
  379 
  380         short device_no;        /* Synthesizer number */
  381         short instr_no;         /* Midi pgm# */
  382 
  383         u_long mode;
  384 /*
  385  * The least significant byte has the same format than the GUS .PAT
  386  * files
  387  */
  388 #define WAVE_16_BITS    0x01    /* bit 0 = 8 or 16 bit wave data. */
  389 #define WAVE_UNSIGNED   0x02    /* bit 1 = Signed - Unsigned data. */
  390 #define WAVE_LOOPING    0x04    /* bit 2 = looping enabled-1. */
  391 #define WAVE_BIDIR_LOOP 0x08    /* bit 3 = Set is bidirectional looping. */
  392 #define WAVE_LOOP_BACK  0x10    /* bit 4 = Set is looping backward. */
  393 #define WAVE_SUSTAIN_ON 0x20    /* bit 5 = Turn sustaining on. (Env. pts. 3)*/
  394 #define WAVE_ENVELOPES  0x40    /* bit 6 = Enable envelopes - 1 */
  395                                 /*      (use the env_rate/env_offs fields). */
  396 /* Linux specific bits */
  397 #define WAVE_VIBRATO    0x00010000      /* The vibrato info is valid */
  398 #define WAVE_TREMOLO    0x00020000      /* The tremolo info is valid */
  399 #define WAVE_SCALE      0x00040000      /* The scaling info is valid */
  400 /* Other bits must be zeroed */
  401 
  402         long len;       /* Size of the wave data in bytes */
  403         long loop_start, loop_end; /* Byte offsets from the beginning */
  404 
  405 /*
  406  * The base_freq and base_note fields are used when computing the
  407  * playback speed for a note. The base_note defines the tone frequency
  408  * which is heard if the sample is played using the base_freq as the
  409  * playback speed.
  410  *
  411  * The low_note and high_note fields define the minimum and maximum note
  412  * frequencies for which this sample is valid. It is possible to define
  413  * more than one samples for an instrument number at the same time. The
  414  * low_note and high_note fields are used to select the most suitable one.
  415  *
  416  * The fields base_note, high_note and low_note should contain
  417  * the note frequency multiplied by 1000. For example value for the
  418  * middle A is 440*1000.
  419  */
  420 
  421         u_int base_freq;
  422         u_long base_note;
  423         u_long high_note;
  424         u_long low_note;
  425         int panning;    /* -128=left, 127=right */
  426         int detuning;
  427 
  428 /*      New fields introduced in version 1.99.5 */
  429 
  430        /* Envelope. Enabled by mode bit WAVE_ENVELOPES  */
  431         u_char  env_rate[ 6 ];   /* GUS HW ramping rate */
  432         u_char  env_offset[ 6 ]; /* 255 == 100% */
  433 
  434         /*
  435          * The tremolo, vibrato and scale info are not supported yet.
  436          * Enable by setting the mode bits WAVE_TREMOLO, WAVE_VIBRATO or
  437          * WAVE_SCALE
  438          */
  439 
  440         u_char  tremolo_sweep;
  441         u_char  tremolo_rate;
  442         u_char  tremolo_depth;
  443 
  444         u_char  vibrato_sweep;
  445         u_char  vibrato_rate;
  446         u_char  vibrato_depth;
  447 
  448         int             scale_frequency;
  449         u_int   scale_factor;           /* from 0 to 2048 or 0 to 2 */
  450 
  451         int             volume;
  452         int             spare[4];
  453         char data[1];   /* The waveform data starts here */
  454 };
  455 
  456 struct sysex_info {
  457         short key;              /* Use GUS_PATCH here */
  458 #define SYSEX_PATCH     _PATCHKEY(0x05)
  459 #define MAUI_PATCH      _PATCHKEY(0x06)
  460         short device_no;        /* Synthesizer number */
  461         long len;       /* Size of the sysex data in bytes */
  462         u_char data[1]; /* Sysex data starts here */
  463 };
  464 
  465 /*
  466  * Patch management interface (/dev/sequencer, /dev/patmgr#)
  467  * Don't use these calls if you want to maintain compatibility with
  468  * the future versions of the driver.
  469  */
  470 
  471 #define PS_NO_PATCHES           0       /* No patch support on device */
  472 #define PS_MGR_NOT_OK           1       /* Plain patch support (no mgr) */
  473 #define PS_MGR_OK               2       /* Patch manager supported */
  474 #define PS_MANAGED              3       /* Patch manager running */
  475 
  476 #define SNDCTL_PMGR_IFACE               _IOWR('P', 1, struct patmgr_info)
  477 
  478 /*
  479  * The patmgr_info is a fixed size structure which is used for two
  480  * different purposes. The intended use is for communication between
  481  * the application using /dev/sequencer and the patch manager daemon
  482  * associated with a synthesizer device (ioctl(SNDCTL_PMGR_ACCESS)).
  483  *
  484  * This structure is also used with ioctl(SNDCTL_PGMR_IFACE) which allows
  485  * a patch manager daemon to read and write device parameters. This
  486  * ioctl available through /dev/sequencer also. Avoid using it since it's
  487  * extremely hardware dependent. In addition access trough /dev/sequencer
  488  * may confuse the patch manager daemon.
  489  */
  490 
  491 struct patmgr_info {    /* Note! size must be < 4k since kmalloc() is used */
  492           u_long key;   /* Don't worry. Reserved for communication
  493                                    between the patch manager and the driver. */
  494 #define PM_K_EVENT              1 /* Event from the /dev/sequencer driver */
  495 #define PM_K_COMMAND            2 /* Request from an application */
  496 #define PM_K_RESPONSE           3 /* From patmgr to application */
  497 #define PM_ERROR                4 /* Error returned by the patmgr */
  498           int device;
  499           int command;
  500 
  501 /*
  502  * Commands 0x000 to 0xfff reserved for patch manager programs
  503  */
  504 #define PM_GET_DEVTYPE  1       /* Returns type of the patch mgr interface of dev */
  505 #define         PMTYPE_FM2      1       /* 2 OP fm */
  506 #define         PMTYPE_FM4      2       /* Mixed 4 or 2 op FM (OPL-3) */
  507 #define         PMTYPE_WAVE     3       /* Wave table synthesizer (GUS) */
  508 #define PM_GET_NRPGM    2       /* Returns max # of midi programs in parm1 */
  509 #define PM_GET_PGMMAP   3       /* Returns map of loaded midi programs in data8 */
  510 #define PM_GET_PGM_PATCHES 4    /* Return list of patches of a program (parm1) */
  511 #define PM_GET_PATCH    5       /* Return patch header of patch parm1 */
  512 #define PM_SET_PATCH    6       /* Set patch header of patch parm1 */
  513 #define PM_READ_PATCH   7       /* Read patch (wave) data */
  514 #define PM_WRITE_PATCH  8       /* Write patch (wave) data */
  515 
  516 /*
  517  * Commands 0x1000 to 0xffff are for communication between the patch manager
  518  * and the client
  519  */
  520 #define _PM_LOAD_PATCH  0x100
  521 
  522 /*
  523  * Commands above 0xffff reserved for device specific use
  524  */
  525 
  526         long parm1;
  527         long parm2;
  528         long parm3;
  529 
  530         union {
  531                 u_char data8[4000];
  532                 u_short data16[2000];
  533                 u_long data32[1000];
  534                 struct patch_info patch;
  535         } data;
  536 };
  537 
  538 /*
  539  * When a patch manager daemon is present, it will be informed by the
  540  * driver when something important happens. For example when the
  541  * /dev/sequencer is opened or closed. A record with key == PM_K_EVENT is
  542  * returned. The command field contains the event type:
  543  */
  544 #define PM_E_OPENED             1       /* /dev/sequencer opened */
  545 #define PM_E_CLOSED             2       /* /dev/sequencer closed */
  546 #define PM_E_PATCH_RESET        3       /* SNDCTL_RESETSAMPLES called */
  547 #define PM_E_PATCH_LOADED       4       /* A patch has been loaded by appl */
  548 
  549 /*
  550  * /dev/sequencer input events.
  551  *
  552  * The data written to the /dev/sequencer is a stream of events. Events
  553  * are records of 4 or 8 bytes. The first byte defines the size.
  554  * Any number of events can be written with a write call. There
  555  * is a set of macros for sending these events. Use these macros if you
  556  * want to maximize portability of your program.
  557  *
  558  * Events SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO. Are also input events.
  559  * (All input events are currently 4 bytes long. Be prepared to support
  560  * 8 byte events also. If you receive any event having first byte >= 128,
  561  * it's a 8 byte event.
  562  *
  563  * The events are documented at the end of this file.
  564  *
  565  * Normal events (4 bytes)
  566  * There is also a 8 byte version of most of the 4 byte events. The
  567  * 8 byte one is recommended.
  568  */
  569 #define SEQ_NOTEOFF             0
  570 #define SEQ_FMNOTEOFF           SEQ_NOTEOFF     /* Just old name */
  571 #define SEQ_NOTEON              1
  572 #define SEQ_FMNOTEON            SEQ_NOTEON
  573 #define SEQ_WAIT                TMR_WAIT_ABS
  574 #define SEQ_PGMCHANGE           3
  575 #define SEQ_FMPGMCHANGE         SEQ_PGMCHANGE
  576 #define SEQ_SYNCTIMER           TMR_START
  577 #define SEQ_MIDIPUTC            5
  578 #define SEQ_DRUMON              6       /*** OBSOLETE ***/
  579 #define SEQ_DRUMOFF             7       /*** OBSOLETE ***/
  580 #define SEQ_ECHO                TMR_ECHO        /* For synching programs with output */
  581 #define SEQ_AFTERTOUCH          9
  582 #define SEQ_CONTROLLER          10
  583 
  584 /*
  585  *      Midi controller numbers
  586  *
  587  * Controllers 0 to 31 (0x00 to 0x1f) and 32 to 63 (0x20 to 0x3f)
  588  * are continuous controllers.
  589  * In the MIDI 1.0 these controllers are sent using two messages.
  590  * Controller numbers 0 to 31 are used to send the MSB and the
  591  * controller numbers 32 to 63 are for the LSB. Note that just 7 bits
  592  * are used in MIDI bytes.
  593  */
  594 
  595 #define CTL_BANK_SELECT         0x00
  596 #define CTL_MODWHEEL            0x01
  597 #define CTL_BREATH              0x02
  598 /*      undefined               0x03 */
  599 #define CTL_FOOT                0x04
  600 #define CTL_PORTAMENTO_TIME     0x05
  601 #define CTL_DATA_ENTRY          0x06
  602 #define CTL_MAIN_VOLUME         0x07
  603 #define CTL_BALANCE             0x08
  604 /*      undefined               0x09 */
  605 #define CTL_PAN                 0x0a
  606 #define CTL_EXPRESSION          0x0b
  607 /*      undefined               0x0c - 0x0f */
  608 #define CTL_GENERAL_PURPOSE1    0x10
  609 #define CTL_GENERAL_PURPOSE2    0x11
  610 #define CTL_GENERAL_PURPOSE3    0x12
  611 #define CTL_GENERAL_PURPOSE4    0x13
  612 /*      undefined               0x14 - 0x1f */
  613 
  614 /*      undefined               0x20 */
  615 
  616 /*
  617  * The controller numbers 0x21 to 0x3f are reserved for the
  618  * least significant bytes of the controllers 0x00 to 0x1f.
  619  * These controllers are not recognised by the driver.
  620  *
  621  * Controllers 64 to 69 (0x40 to 0x45) are on/off switches.
  622  * 0=OFF and 127=ON (intermediate values are possible)
  623  */
  624 #define CTL_DAMPER_PEDAL        0x40
  625 #define CTL_SUSTAIN             CTL_DAMPER_PEDAL        /* Alias */
  626 #define CTL_HOLD                CTL_DAMPER_PEDAL        /* Alias */
  627 #define CTL_PORTAMENTO          0x41
  628 #define CTL_SOSTENUTO           0x42
  629 #define CTL_SOFT_PEDAL          0x43
  630 /*      undefined               0x44 */
  631 #define CTL_HOLD2               0x45
  632 /*      undefined               0x46 - 0x4f */
  633 
  634 #define CTL_GENERAL_PURPOSE5    0x50
  635 #define CTL_GENERAL_PURPOSE6    0x51
  636 #define CTL_GENERAL_PURPOSE7    0x52
  637 #define CTL_GENERAL_PURPOSE8    0x53
  638 /*      undefined               0x54 - 0x5a */
  639 #define CTL_EXT_EFF_DEPTH       0x5b
  640 #define CTL_TREMOLO_DEPTH       0x5c
  641 #define CTL_CHORUS_DEPTH        0x5d
  642 #define CTL_DETUNE_DEPTH        0x5e
  643 #define CTL_CELESTE_DEPTH       CTL_DETUNE_DEPTH /* Alias for the above one */
  644 #define CTL_PHASER_DEPTH        0x5f
  645 #define CTL_DATA_INCREMENT      0x60
  646 #define CTL_DATA_DECREMENT      0x61
  647 #define CTL_NONREG_PARM_NUM_LSB 0x62
  648 #define CTL_NONREG_PARM_NUM_MSB 0x63
  649 #define CTL_REGIST_PARM_NUM_LSB 0x64
  650 #define CTL_REGIST_PARM_NUM_MSB 0x65
  651 /*      undefined               0x66 - 0x78 */
  652 /*      reserved                0x79 - 0x7f */
  653 
  654 /* Pseudo controllers (not midi compatible) */
  655 #define CTRL_PITCH_BENDER       255
  656 #define CTRL_PITCH_BENDER_RANGE 254
  657 #define CTRL_EXPRESSION         253     /* Obsolete */
  658 #define CTRL_MAIN_VOLUME        252     /* Obsolete */
  659 
  660 #define SEQ_BALANCE             11
  661 #define SEQ_VOLMODE             12
  662 
  663 /*
  664  * Volume mode decides how volumes are used
  665  */
  666 
  667 #define VOL_METHOD_ADAGIO       1
  668 #define VOL_METHOD_LINEAR       2
  669 
  670 /*
  671  * Note! SEQ_WAIT, SEQ_MIDIPUTC and SEQ_ECHO are used also as
  672  *       input events.
  673  */
  674 
  675 /*
  676  * Event codes 0xf0 to 0xfc are reserved for future extensions.
  677  */
  678 
  679 #define SEQ_FULLSIZE            0xfd    /* Long events */
  680 /*
  681  * SEQ_FULLSIZE events are used for loading patches/samples to the
  682  * synthesizer devices. These events are passed directly to the driver
  683  * of the associated synthesizer device. There is no limit to the size
  684  * of the extended events. These events are not queued but executed
  685  * immediately when the write() is called (execution can take several
  686  * seconds of time).
  687  *
  688  * When a SEQ_FULLSIZE message is written to the device, it must
  689  * be written using exactly one write() call. Other events cannot
  690  * be mixed to the same write.
  691  *
  692  * For FM synths (YM3812/OPL3) use struct sbi_instrument and write
  693  * it to the /dev/sequencer. Don't write other data together with
  694  * the instrument structure Set the key field of the structure to
  695  * FM_PATCH. The device field is used to route the patch to the
  696  * corresponding device.
  697  *
  698  * For Gravis UltraSound use struct patch_info. Initialize the key field
  699  * to GUS_PATCH.
  700  */
  701 #define SEQ_PRIVATE     0xfe    /* Low level HW dependent events (8 bytes) */
  702 #define SEQ_EXTENDED    0xff    /* Extended events (8 bytes) OBSOLETE */
  703 
  704 /*
  705  * Record for FM patches
  706  */
  707 
  708 typedef u_char sbi_instr_data[32];
  709 
  710 struct sbi_instrument {
  711         u_short key;    /* FM_PATCH or OPL3_PATCH */
  712 #define FM_PATCH        _PATCHKEY(0x01)
  713 #define OPL3_PATCH      _PATCHKEY(0x03)
  714         short           device;         /* Synth# (0-4) */
  715         int             channel;        /* Program# to be initialized  */
  716         sbi_instr_data  operators;      /* Reg. settings for operator cells
  717                                          * (.SBI format)        */
  718 };
  719 
  720 struct synth_info {     /* Read only */
  721         char    name[30];
  722         int     device;         /* 0-N. INITIALIZE BEFORE CALLING */
  723         int     synth_type;
  724 #define SYNTH_TYPE_FM                   0
  725 #define SYNTH_TYPE_SAMPLE               1
  726 #define SYNTH_TYPE_MIDI                 2       /* Midi interface */
  727 
  728         int     synth_subtype;
  729 #define FM_TYPE_ADLIB                   0x00
  730 #define FM_TYPE_OPL3                    0x01
  731 #define MIDI_TYPE_MPU401                0x401
  732 
  733 #define SAMPLE_TYPE_BASIC               0x10
  734 #define SAMPLE_TYPE_GUS                 SAMPLE_TYPE_BASIC
  735 #define SAMPLE_TYPE_AWE32               0x20
  736 
  737         int     perc_mode;      /* No longer supported */
  738         int     nr_voices;
  739         int     nr_drums;       /* Obsolete field */
  740         int     instr_bank_size;
  741         u_long  capabilities;
  742 #define SYNTH_CAP_PERCMODE      0x00000001 /* No longer used */
  743 #define SYNTH_CAP_OPL3          0x00000002 /* Set if OPL3 supported */
  744 #define SYNTH_CAP_INPUT         0x00000004 /* Input (MIDI) device */
  745         int     dummies[19];    /* Reserve space */
  746 };
  747 
  748 struct sound_timer_info {
  749         char name[32];
  750         int caps;
  751 };
  752 
  753 struct midi_info {
  754         char            name[30];
  755         int             device;         /* 0-N. INITIALIZE BEFORE CALLING */
  756         u_long  capabilities;   /* To be defined later */
  757         int             dev_type;
  758         int             dummies[18];    /* Reserve space */
  759 };
  760 
  761 /*
  762  * ioctl commands for the /dev/midi##
  763  */
  764 typedef struct {
  765         u_char cmd;
  766         char nr_args, nr_returns;
  767         u_char data[30];
  768 } mpu_command_rec;
  769 
  770 #define SNDCTL_MIDI_PRETIME     _IOWR('m', 0, int)
  771 #define SNDCTL_MIDI_MPUMODE     _IOWR('m', 1, int)
  772 #define SNDCTL_MIDI_MPUCMD      _IOWR('m', 2, mpu_command_rec)
  773 #define MIOSPASSTHRU            _IOWR('m', 3, int)
  774 #define MIOGPASSTHRU            _IOWR('m', 4, int)
  775 
  776 /*
  777  * IOCTL commands for /dev/dsp and /dev/audio
  778  */
  779 
  780 #define SNDCTL_DSP_HALT         _IO  ('P', 0)
  781 #define SNDCTL_DSP_RESET        SNDCTL_DSP_HALT
  782 #define SNDCTL_DSP_SYNC         _IO  ('P', 1)
  783 #define SNDCTL_DSP_SPEED        _IOWR('P', 2, int)
  784 #define SNDCTL_DSP_STEREO       _IOWR('P', 3, int)
  785 #define SNDCTL_DSP_GETBLKSIZE   _IOR('P', 4, int)
  786 #define SNDCTL_DSP_SETBLKSIZE   _IOW('P', 4, int)
  787 #define SNDCTL_DSP_SETFMT       _IOWR('P',5, int) /* Selects ONE fmt*/
  788 
  789 /*
  790  * SOUND_PCM_WRITE_CHANNELS is not that different
  791  * from SNDCTL_DSP_STEREO
  792  */
  793 #define SOUND_PCM_WRITE_CHANNELS        _IOWR('P', 6, int)
  794 #define SNDCTL_DSP_CHANNELS     SOUND_PCM_WRITE_CHANNELS
  795 #define SOUND_PCM_WRITE_FILTER  _IOWR('P', 7, int)
  796 #define SNDCTL_DSP_POST         _IO  ('P', 8)
  797 
  798 /*
  799  * SNDCTL_DSP_SETBLKSIZE and the following two calls mostly do
  800  * the same thing, i.e. set the block size used in DMA transfers.
  801  */
  802 #define SNDCTL_DSP_SUBDIVIDE    _IOWR('P', 9, int)
  803 #define SNDCTL_DSP_SETFRAGMENT  _IOWR('P',10, int)
  804 
  805 
  806 #define SNDCTL_DSP_GETFMTS      _IOR ('P',11, int) /* Returns a mask */
  807 /*
  808  * Buffer status queries.
  809  */
  810 typedef struct audio_buf_info {
  811     int fragments;      /* # of avail. frags (partly used ones not counted) */
  812     int fragstotal;     /* Total # of fragments allocated */
  813     int fragsize;       /* Size of a fragment in bytes */
  814 
  815     int bytes;  /* Avail. space in bytes (includes partly used fragments) */
  816                 /* Note! 'bytes' could be more than fragments*fragsize */
  817 } audio_buf_info;
  818 
  819 #define SNDCTL_DSP_GETOSPACE    _IOR ('P',12, audio_buf_info)
  820 #define SNDCTL_DSP_GETISPACE    _IOR ('P',13, audio_buf_info)
  821 
  822 /*
  823  * SNDCTL_DSP_NONBLOCK is the same (but less powerful, since the
  824  * action cannot be undone) of FIONBIO. The same can be achieved
  825  * by opening the device with O_NDELAY
  826  */
  827 #define SNDCTL_DSP_NONBLOCK     _IO  ('P',14)
  828 
  829 #define SNDCTL_DSP_GETCAPS      _IOR ('P',15, int)
  830 #       define PCM_CAP_REVISION         0x000000ff      /* Bits for revision level (0 to 255) */
  831 #       define PCM_CAP_DUPLEX           0x00000100      /* Full duplex record/playback */
  832 #       define PCM_CAP_REALTIME         0x00000200      /* Not in use */
  833 #       define PCM_CAP_BATCH            0x00000400      /* Device has some kind of */
  834                                                         /* internal buffers which may */
  835                                                         /* cause some delays and */
  836                                                         /* decrease precision of timing */
  837 #       define PCM_CAP_COPROC           0x00000800      /* Has a coprocessor */
  838                                                         /* Sometimes it's a DSP */
  839                                                         /* but usually not */
  840 #       define PCM_CAP_TRIGGER          0x00001000      /* Supports SETTRIGGER */
  841 #       define PCM_CAP_MMAP             0x00002000      /* Supports mmap() */
  842 #       define PCM_CAP_MULTI            0x00004000      /* Supports multiple open */
  843 #       define PCM_CAP_BIND             0x00008000      /* Supports binding to front/rear/center/lfe */
  844 #       define PCM_CAP_INPUT            0x00010000      /* Supports recording */
  845 #       define PCM_CAP_OUTPUT           0x00020000      /* Supports playback */
  846 #       define PCM_CAP_VIRTUAL          0x00040000      /* Virtual device */
  847 /* 0x00040000 and 0x00080000 reserved for future use */
  848 
  849 /* Analog/digital control capabilities */
  850 #       define PCM_CAP_ANALOGOUT        0x00100000
  851 #       define PCM_CAP_ANALOGIN         0x00200000
  852 #       define PCM_CAP_DIGITALOUT       0x00400000
  853 #       define PCM_CAP_DIGITALIN        0x00800000
  854 #       define PCM_CAP_ADMASK           0x00f00000
  855 /*
  856  * NOTE! (capabilities & PCM_CAP_ADMASK)==0 means just that the
  857  * digital/analog interface control features are not supported by the 
  858  * device/driver. However the device still supports analog, digital or
  859  * both inputs/outputs (depending on the device). See the OSS Programmer's
  860  * Guide for full details.
  861  */
  862 #       define PCM_CAP_SPECIAL          0x01000000      /* Not for ordinary "multimedia" use */
  863 #       define PCM_CAP_SHADOW           0x00000000      /* OBSOLETE */
  864 
  865 /*
  866  * Preferred channel usage. These bits can be used to
  867  * give recommendations to the application. Used by few drivers.
  868  * For example if ((caps & DSP_CH_MASK) == DSP_CH_MONO) means that
  869  * the device works best in mono mode. However it doesn't necessarily mean
  870  * that the device cannot be used in stereo. These bits should only be used
  871  * by special applications such as multi track hard disk recorders to find
  872  * out the initial setup. However the user should be able to override this
  873  * selection.
  874  *
  875  * To find out which modes are actually supported the application should 
  876  * try to select them using SNDCTL_DSP_CHANNELS.
  877  */
  878 #       define DSP_CH_MASK              0x06000000      /* Mask */
  879 #       define DSP_CH_ANY               0x00000000      /* No preferred mode */
  880 #       define DSP_CH_MONO              0x02000000
  881 #       define DSP_CH_STEREO            0x04000000
  882 #       define DSP_CH_MULTI             0x06000000      /* More than two channels */
  883 
  884 #       define PCM_CAP_HIDDEN           0x08000000      /* Hidden device */
  885 #       define PCM_CAP_FREERATE         0x10000000
  886 #       define PCM_CAP_MODEM            0x20000000      /* Modem device */
  887 #       define PCM_CAP_DEFAULT          0x40000000      /* "Default" device */
  888 
  889 /*
  890  * The PCM_CAP_* capability names were known as DSP_CAP_* prior OSS 4.0
  891  * so it's necessary to define the older names too.
  892  */
  893 #define DSP_CAP_ADMASK          PCM_CAP_ADMASK
  894 #define DSP_CAP_ANALOGIN        PCM_CAP_ANALOGIN
  895 #define DSP_CAP_ANALOGOUT       PCM_CAP_ANALOGOUT
  896 #define DSP_CAP_BATCH           PCM_CAP_BATCH
  897 #define DSP_CAP_BIND            PCM_CAP_BIND
  898 #define DSP_CAP_COPROC          PCM_CAP_COPROC
  899 #define DSP_CAP_DEFAULT         PCM_CAP_DEFAULT
  900 #define DSP_CAP_DIGITALIN       PCM_CAP_DIGITALIN
  901 #define DSP_CAP_DIGITALOUT      PCM_CAP_DIGITALOUT
  902 #define DSP_CAP_DUPLEX          PCM_CAP_DUPLEX
  903 #define DSP_CAP_FREERATE        PCM_CAP_FREERATE
  904 #define DSP_CAP_HIDDEN          PCM_CAP_HIDDEN
  905 #define DSP_CAP_INPUT           PCM_CAP_INPUT
  906 #define DSP_CAP_MMAP            PCM_CAP_MMAP
  907 #define DSP_CAP_MODEM           PCM_CAP_MODEM
  908 #define DSP_CAP_MULTI           PCM_CAP_MULTI
  909 #define DSP_CAP_OUTPUT          PCM_CAP_OUTPUT
  910 #define DSP_CAP_REALTIME        PCM_CAP_REALTIME
  911 #define DSP_CAP_REVISION        PCM_CAP_REVISION
  912 #define DSP_CAP_SHADOW          PCM_CAP_SHADOW
  913 #define DSP_CAP_TRIGGER         PCM_CAP_TRIGGER
  914 #define DSP_CAP_VIRTUAL         PCM_CAP_VIRTUAL
  915 
  916 /*
  917  * What do these function do ?
  918  */
  919 #define SNDCTL_DSP_GETTRIGGER   _IOR ('P',16, int)
  920 #define SNDCTL_DSP_SETTRIGGER   _IOW ('P',16, int)
  921 #define PCM_ENABLE_INPUT        0x00000001
  922 #define PCM_ENABLE_OUTPUT       0x00000002
  923 
  924 typedef struct count_info {
  925         int bytes;      /* Total # of bytes processed */
  926         int blocks;     /* # of fragment transitions since last time */
  927         int ptr;        /* Current DMA pointer value */
  928 } count_info;
  929 
  930 /*
  931  * GETIPTR and GETISPACE are not that different... same for out.
  932  */
  933 #define SNDCTL_DSP_GETIPTR      _IOR ('P',17, count_info)
  934 #define SNDCTL_DSP_GETOPTR      _IOR ('P',18, count_info)
  935 
  936 typedef struct buffmem_desc {
  937         caddr_t buffer;
  938         int size;
  939 } buffmem_desc;
  940 
  941 #define SNDCTL_DSP_MAPINBUF     _IOR ('P', 19, buffmem_desc)
  942 #define SNDCTL_DSP_MAPOUTBUF    _IOR ('P', 20, buffmem_desc)
  943 #define SNDCTL_DSP_SETSYNCRO    _IO  ('P', 21)
  944 #define SNDCTL_DSP_SETDUPLEX    _IO  ('P', 22)
  945 #define SNDCTL_DSP_GETODELAY    _IOR ('P', 23, int)
  946 
  947 /*
  948  * I guess these are the readonly version of the same
  949  * functions that exist above as SNDCTL_DSP_...
  950  */
  951 #define SOUND_PCM_READ_RATE     _IOR ('P', 2, int)
  952 #define SOUND_PCM_READ_CHANNELS _IOR ('P', 6, int)
  953 #define SOUND_PCM_READ_BITS     _IOR ('P', 5, int)
  954 #define SOUND_PCM_READ_FILTER   _IOR ('P', 7, int)
  955 
  956 /*
  957  * ioctl calls to be used in communication with coprocessors and
  958  * DSP chips.
  959  */
  960 
  961 typedef struct copr_buffer {
  962         int command;    /* Set to 0 if not used */
  963         int flags;
  964 #define CPF_NONE                0x0000
  965 #define CPF_FIRST               0x0001  /* First block */
  966 #define CPF_LAST                0x0002  /* Last block */
  967         int len;
  968         int offs;       /* If required by the device (0 if not used) */
  969 
  970         u_char data[4000]; /* NOTE! 4000 is not 4k */
  971 } copr_buffer;
  972 
  973 typedef struct copr_debug_buf {
  974         int command;    /* Used internally. Set to 0 */
  975         int parm1;
  976         int parm2;
  977         int flags;
  978         int len;        /* Length of data in bytes */
  979 } copr_debug_buf;
  980 
  981 typedef struct copr_msg {
  982         int len;
  983         u_char data[4000];
  984 } copr_msg;
  985 
  986 #define SNDCTL_COPR_RESET       _IO  ('C',  0)
  987 #define SNDCTL_COPR_LOAD        _IOWR('C',  1, copr_buffer)
  988 #define SNDCTL_COPR_RDATA       _IOWR('C',  2, copr_debug_buf)
  989 #define SNDCTL_COPR_RCODE       _IOWR('C',  3, copr_debug_buf)
  990 #define SNDCTL_COPR_WDATA       _IOW ('C',  4, copr_debug_buf)
  991 #define SNDCTL_COPR_WCODE       _IOW ('C',  5, copr_debug_buf)
  992 #define SNDCTL_COPR_RUN         _IOWR('C',  6, copr_debug_buf)
  993 #define SNDCTL_COPR_HALT        _IOWR('C',  7, copr_debug_buf)
  994 #define SNDCTL_COPR_SENDMSG     _IOW ('C',  8, copr_msg)
  995 #define SNDCTL_COPR_RCVMSG      _IOR ('C',  9, copr_msg)
  996 
  997 /*
  998  * IOCTL commands for /dev/mixer
  999  */
 1000 
 1001 /*
 1002  * Mixer devices
 1003  *
 1004  * There can be up to 20 different analog mixer channels. The
 1005  * SOUND_MIXER_NRDEVICES gives the currently supported maximum.
 1006  * The SOUND_MIXER_READ_DEVMASK returns a bitmask which tells
 1007  * the devices supported by the particular mixer.
 1008  */
 1009 
 1010 #define SOUND_MIXER_NRDEVICES   25
 1011 #define SOUND_MIXER_VOLUME      0       /* Master output level */
 1012 #define SOUND_MIXER_BASS        1       /* Treble level of all output channels */
 1013 #define SOUND_MIXER_TREBLE      2       /* Bass level of all output channels */
 1014 #define SOUND_MIXER_SYNTH       3       /* Volume of synthesier input */
 1015 #define SOUND_MIXER_PCM         4       /* Output level for the audio device */
 1016 #define SOUND_MIXER_SPEAKER     5       /* Output level for the PC speaker
 1017                                          * signals */
 1018 #define SOUND_MIXER_LINE        6       /* Volume level for the line in jack */
 1019 #define SOUND_MIXER_MIC         7       /* Volume for the signal coming from
 1020                                          * the microphone jack */
 1021 #define SOUND_MIXER_CD          8       /* Volume level for the input signal
 1022                                          * connected to the CD audio input */
 1023 #define SOUND_MIXER_IMIX        9       /* Recording monitor. It controls the
 1024                                          * output volume of the selected
 1025                                          * recording sources while recording */
 1026 #define SOUND_MIXER_ALTPCM      10      /* Volume of the alternative codec
 1027                                          * device */
 1028 #define SOUND_MIXER_RECLEV      11      /* Global recording level */
 1029 #define SOUND_MIXER_IGAIN       12      /* Input gain */
 1030 #define SOUND_MIXER_OGAIN       13      /* Output gain */
 1031 /*
 1032  * The AD1848 codec and compatibles have three line level inputs
 1033  * (line, aux1 and aux2). Since each card manufacturer have assigned
 1034  * different meanings to these inputs, it's inpractical to assign
 1035  * specific meanings (line, cd, synth etc.) to them.
 1036  */
 1037 #define SOUND_MIXER_LINE1       14      /* Input source 1  (aux1) */
 1038 #define SOUND_MIXER_LINE2       15      /* Input source 2  (aux2) */
 1039 #define SOUND_MIXER_LINE3       16      /* Input source 3  (line) */
 1040 #define SOUND_MIXER_DIGITAL1    17      /* Digital (input) 1 */
 1041 #define SOUND_MIXER_DIGITAL2    18      /* Digital (input) 2 */
 1042 #define SOUND_MIXER_DIGITAL3    19      /* Digital (input) 3 */
 1043 #define SOUND_MIXER_PHONEIN     20      /* Phone input */
 1044 #define SOUND_MIXER_PHONEOUT    21      /* Phone output */
 1045 #define SOUND_MIXER_VIDEO       22      /* Video/TV (audio) in */
 1046 #define SOUND_MIXER_RADIO       23      /* Radio in */
 1047 #define SOUND_MIXER_MONITOR     24      /* Monitor (usually mic) volume */
 1048 
 1049 
 1050 /*
 1051  * Some on/off settings (SOUND_SPECIAL_MIN - SOUND_SPECIAL_MAX)
 1052  * Not counted to SOUND_MIXER_NRDEVICES, but use the same number space
 1053  */
 1054 #define SOUND_ONOFF_MIN         28
 1055 #define SOUND_ONOFF_MAX         30
 1056 #define SOUND_MIXER_MUTE        28      /* 0 or 1 */
 1057 #define SOUND_MIXER_ENHANCE     29      /* Enhanced stereo (0, 40, 60 or 80) */
 1058 #define SOUND_MIXER_LOUD        30      /* 0 or 1 */
 1059 
 1060 /* Note!        Number 31 cannot be used since the sign bit is reserved */
 1061 #define SOUND_MIXER_NONE        31
 1062 
 1063 #define SOUND_DEVICE_LABELS     { \
 1064         "Vol  ", "Bass ", "Trebl", "Synth", "Pcm  ", "Spkr ", "Line ", \
 1065         "Mic  ", "CD   ", "Mix  ", "Pcm2 ", "Rec  ", "IGain", "OGain", \
 1066         "Line1", "Line2", "Line3", "Digital1", "Digital2", "Digital3", \
 1067         "PhoneIn", "PhoneOut", "Video", "Radio", "Monitor"}
 1068 
 1069 #define SOUND_DEVICE_NAMES      { \
 1070         "vol", "bass", "treble", "synth", "pcm", "speaker", "line", \
 1071         "mic", "cd", "mix", "pcm2", "rec", "igain", "ogain", \
 1072         "line1", "line2", "line3", "dig1", "dig2", "dig3", \
 1073         "phin", "phout", "video", "radio", "monitor"}
 1074 
 1075 /*      Device bitmask identifiers      */
 1076 
 1077 #define SOUND_MIXER_RECSRC      0xff    /* 1 bit per recording source */
 1078 #define SOUND_MIXER_DEVMASK     0xfe    /* 1 bit per supported device */
 1079 #define SOUND_MIXER_RECMASK     0xfd    /* 1 bit per supp. recording source */
 1080 #define SOUND_MIXER_CAPS        0xfc
 1081 #define SOUND_CAP_EXCL_INPUT    0x00000001      /* Only 1 rec. src at a time */
 1082 #define SOUND_MIXER_STEREODEVS  0xfb    /* Mixer channels supporting stereo */
 1083 
 1084 /*      Device mask bits        */
 1085 
 1086 #define SOUND_MASK_VOLUME       (1 << SOUND_MIXER_VOLUME)
 1087 #define SOUND_MASK_BASS         (1 << SOUND_MIXER_BASS)
 1088 #define SOUND_MASK_TREBLE       (1 << SOUND_MIXER_TREBLE)
 1089 #define SOUND_MASK_SYNTH        (1 << SOUND_MIXER_SYNTH)
 1090 #define SOUND_MASK_PCM          (1 << SOUND_MIXER_PCM)
 1091 #define SOUND_MASK_SPEAKER      (1 << SOUND_MIXER_SPEAKER)
 1092 #define SOUND_MASK_LINE         (1 << SOUND_MIXER_LINE)
 1093 #define SOUND_MASK_MIC          (1 << SOUND_MIXER_MIC)
 1094 #define SOUND_MASK_CD           (1 << SOUND_MIXER_CD)
 1095 #define SOUND_MASK_IMIX         (1 << SOUND_MIXER_IMIX)
 1096 #define SOUND_MASK_ALTPCM       (1 << SOUND_MIXER_ALTPCM)
 1097 #define SOUND_MASK_RECLEV       (1 << SOUND_MIXER_RECLEV)
 1098 #define SOUND_MASK_IGAIN        (1 << SOUND_MIXER_IGAIN)
 1099 #define SOUND_MASK_OGAIN        (1 << SOUND_MIXER_OGAIN)
 1100 #define SOUND_MASK_LINE1        (1 << SOUND_MIXER_LINE1)
 1101 #define SOUND_MASK_LINE2        (1 << SOUND_MIXER_LINE2)
 1102 #define SOUND_MASK_LINE3        (1 << SOUND_MIXER_LINE3)
 1103 #define SOUND_MASK_DIGITAL1     (1 << SOUND_MIXER_DIGITAL1)
 1104 #define SOUND_MASK_DIGITAL2     (1 << SOUND_MIXER_DIGITAL2)
 1105 #define SOUND_MASK_DIGITAL3     (1 << SOUND_MIXER_DIGITAL3)
 1106 #define SOUND_MASK_PHONEIN      (1 << SOUND_MIXER_PHONEIN)
 1107 #define SOUND_MASK_PHONEOUT     (1 << SOUND_MIXER_PHONEOUT)
 1108 #define SOUND_MASK_RADIO        (1 << SOUND_MIXER_RADIO)
 1109 #define SOUND_MASK_VIDEO        (1 << SOUND_MIXER_VIDEO)
 1110 #define SOUND_MASK_MONITOR      (1 << SOUND_MIXER_MONITOR)
 1111 
 1112 /* Obsolete macros */
 1113 #define SOUND_MASK_MUTE         (1 << SOUND_MIXER_MUTE)
 1114 #define SOUND_MASK_ENHANCE      (1 << SOUND_MIXER_ENHANCE)
 1115 #define SOUND_MASK_LOUD         (1 << SOUND_MIXER_LOUD)
 1116 
 1117 #define MIXER_READ(dev)         _IOR('M', dev, int)
 1118 #define SOUND_MIXER_READ_VOLUME         MIXER_READ(SOUND_MIXER_VOLUME)
 1119 #define SOUND_MIXER_READ_BASS           MIXER_READ(SOUND_MIXER_BASS)
 1120 #define SOUND_MIXER_READ_TREBLE         MIXER_READ(SOUND_MIXER_TREBLE)
 1121 #define SOUND_MIXER_READ_SYNTH          MIXER_READ(SOUND_MIXER_SYNTH)
 1122 #define SOUND_MIXER_READ_PCM            MIXER_READ(SOUND_MIXER_PCM)
 1123 #define SOUND_MIXER_READ_SPEAKER        MIXER_READ(SOUND_MIXER_SPEAKER)
 1124 #define SOUND_MIXER_READ_LINE           MIXER_READ(SOUND_MIXER_LINE)
 1125 #define SOUND_MIXER_READ_MIC            MIXER_READ(SOUND_MIXER_MIC)
 1126 #define SOUND_MIXER_READ_CD             MIXER_READ(SOUND_MIXER_CD)
 1127 #define SOUND_MIXER_READ_IMIX           MIXER_READ(SOUND_MIXER_IMIX)
 1128 #define SOUND_MIXER_READ_ALTPCM         MIXER_READ(SOUND_MIXER_ALTPCM)
 1129 #define SOUND_MIXER_READ_RECLEV         MIXER_READ(SOUND_MIXER_RECLEV)
 1130 #define SOUND_MIXER_READ_IGAIN          MIXER_READ(SOUND_MIXER_IGAIN)
 1131 #define SOUND_MIXER_READ_OGAIN          MIXER_READ(SOUND_MIXER_OGAIN)
 1132 #define SOUND_MIXER_READ_LINE1          MIXER_READ(SOUND_MIXER_LINE1)
 1133 #define SOUND_MIXER_READ_LINE2          MIXER_READ(SOUND_MIXER_LINE2)
 1134 #define SOUND_MIXER_READ_LINE3          MIXER_READ(SOUND_MIXER_LINE3)
 1135 #define SOUND_MIXER_READ_DIGITAL1       MIXER_READ(SOUND_MIXER_DIGITAL1)
 1136 #define SOUND_MIXER_READ_DIGITAL2       MIXER_READ(SOUND_MIXER_DIGITAL2)
 1137 #define SOUND_MIXER_READ_DIGITAL3       MIXER_READ(SOUND_MIXER_DIGITAL3)
 1138 #define SOUND_MIXER_READ_PHONEIN        MIXER_READ(SOUND_MIXER_PHONEIN)
 1139 #define SOUND_MIXER_READ_PHONEOUT       MIXER_READ(SOUND_MIXER_PHONEOUT)
 1140 #define SOUND_MIXER_READ_RADIO          MIXER_READ(SOUND_MIXER_RADIO)
 1141 #define SOUND_MIXER_READ_VIDEO          MIXER_READ(SOUND_MIXER_VIDEO)
 1142 #define SOUND_MIXER_READ_MONITOR        MIXER_READ(SOUND_MIXER_MONITOR)
 1143 
 1144 /* Obsolete macros */
 1145 #define SOUND_MIXER_READ_MUTE           MIXER_READ(SOUND_MIXER_MUTE)
 1146 #define SOUND_MIXER_READ_ENHANCE        MIXER_READ(SOUND_MIXER_ENHANCE)
 1147 #define SOUND_MIXER_READ_LOUD           MIXER_READ(SOUND_MIXER_LOUD)
 1148 
 1149 #define SOUND_MIXER_READ_RECSRC         MIXER_READ(SOUND_MIXER_RECSRC)
 1150 #define SOUND_MIXER_READ_DEVMASK        MIXER_READ(SOUND_MIXER_DEVMASK)
 1151 #define SOUND_MIXER_READ_RECMASK        MIXER_READ(SOUND_MIXER_RECMASK)
 1152 #define SOUND_MIXER_READ_STEREODEVS     MIXER_READ(SOUND_MIXER_STEREODEVS)
 1153 #define SOUND_MIXER_READ_CAPS           MIXER_READ(SOUND_MIXER_CAPS)
 1154 
 1155 #define MIXER_WRITE(dev)                _IOWR('M', dev, int)
 1156 #define SOUND_MIXER_WRITE_VOLUME        MIXER_WRITE(SOUND_MIXER_VOLUME)
 1157 #define SOUND_MIXER_WRITE_BASS          MIXER_WRITE(SOUND_MIXER_BASS)
 1158 #define SOUND_MIXER_WRITE_TREBLE        MIXER_WRITE(SOUND_MIXER_TREBLE)
 1159 #define SOUND_MIXER_WRITE_SYNTH         MIXER_WRITE(SOUND_MIXER_SYNTH)
 1160 #define SOUND_MIXER_WRITE_PCM           MIXER_WRITE(SOUND_MIXER_PCM)
 1161 #define SOUND_MIXER_WRITE_SPEAKER       MIXER_WRITE(SOUND_MIXER_SPEAKER)
 1162 #define SOUND_MIXER_WRITE_LINE          MIXER_WRITE(SOUND_MIXER_LINE)
 1163 #define SOUND_MIXER_WRITE_MIC           MIXER_WRITE(SOUND_MIXER_MIC)
 1164 #define SOUND_MIXER_WRITE_CD            MIXER_WRITE(SOUND_MIXER_CD)
 1165 #define SOUND_MIXER_WRITE_IMIX          MIXER_WRITE(SOUND_MIXER_IMIX)
 1166 #define SOUND_MIXER_WRITE_ALTPCM        MIXER_WRITE(SOUND_MIXER_ALTPCM)
 1167 #define SOUND_MIXER_WRITE_RECLEV        MIXER_WRITE(SOUND_MIXER_RECLEV)
 1168 #define SOUND_MIXER_WRITE_IGAIN         MIXER_WRITE(SOUND_MIXER_IGAIN)
 1169 #define SOUND_MIXER_WRITE_OGAIN         MIXER_WRITE(SOUND_MIXER_OGAIN)
 1170 #define SOUND_MIXER_WRITE_LINE1         MIXER_WRITE(SOUND_MIXER_LINE1)
 1171 #define SOUND_MIXER_WRITE_LINE2         MIXER_WRITE(SOUND_MIXER_LINE2)
 1172 #define SOUND_MIXER_WRITE_LINE3         MIXER_WRITE(SOUND_MIXER_LINE3)
 1173 #define SOUND_MIXER_WRITE_DIGITAL1      MIXER_WRITE(SOUND_MIXER_DIGITAL1)
 1174 #define SOUND_MIXER_WRITE_DIGITAL2      MIXER_WRITE(SOUND_MIXER_DIGITAL2)
 1175 #define SOUND_MIXER_WRITE_DIGITAL3      MIXER_WRITE(SOUND_MIXER_DIGITAL3)
 1176 #define SOUND_MIXER_WRITE_PHONEIN       MIXER_WRITE(SOUND_MIXER_PHONEIN)
 1177 #define SOUND_MIXER_WRITE_PHONEOUT      MIXER_WRITE(SOUND_MIXER_PHONEOUT)
 1178 #define SOUND_MIXER_WRITE_RADIO         MIXER_WRITE(SOUND_MIXER_RADIO)
 1179 #define SOUND_MIXER_WRITE_VIDEO         MIXER_WRITE(SOUND_MIXER_VIDEO)
 1180 #define SOUND_MIXER_WRITE_MONITOR       MIXER_WRITE(SOUND_MIXER_MONITOR)
 1181 
 1182 #define SOUND_MIXER_WRITE_MUTE          MIXER_WRITE(SOUND_MIXER_MUTE)
 1183 #define SOUND_MIXER_WRITE_ENHANCE       MIXER_WRITE(SOUND_MIXER_ENHANCE)
 1184 #define SOUND_MIXER_WRITE_LOUD          MIXER_WRITE(SOUND_MIXER_LOUD)
 1185 
 1186 #define SOUND_MIXER_WRITE_RECSRC        MIXER_WRITE(SOUND_MIXER_RECSRC)
 1187 
 1188 typedef struct mixer_info {
 1189   char id[16];
 1190   char name[32];
 1191   int  modify_counter;
 1192   int fillers[10];
 1193 } mixer_info;
 1194 
 1195 #define SOUND_MIXER_INFO                _IOR('M', 101, mixer_info)
 1196 
 1197 #define LEFT_CHN        0
 1198 #define RIGHT_CHN       1
 1199 
 1200 /*
 1201  * Level 2 event types for /dev/sequencer
 1202  */
 1203 
 1204 /*
 1205  * The 4 most significant bits of byte 0 specify the class of
 1206  * the event:
 1207  *
 1208  *      0x8X = system level events,
 1209  *      0x9X = device/port specific events, event[1] = device/port,
 1210  *              The last 4 bits give the subtype:
 1211  *                      0x02    = Channel event (event[3] = chn).
 1212  *                      0x01    = note event (event[4] = note).
 1213  *                      (0x01 is not used alone but always with bit 0x02).
 1214  *             event[2] = MIDI message code (0x80=note off etc.)
 1215  *
 1216  */
 1217 
 1218 #define EV_SEQ_LOCAL            0x80
 1219 #define EV_TIMING               0x81
 1220 #define EV_CHN_COMMON           0x92
 1221 #define EV_CHN_VOICE            0x93
 1222 #define EV_SYSEX                0x94
 1223 /*
 1224  * Event types 200 to 220 are reserved for application use.
 1225  * These numbers will not be used by the driver.
 1226  */
 1227 
 1228 /*
 1229  * Events for event type EV_CHN_VOICE
 1230  */
 1231 
 1232 #define MIDI_NOTEOFF            0x80
 1233 #define MIDI_NOTEON             0x90
 1234 #define MIDI_KEY_PRESSURE       0xA0
 1235 
 1236 /*
 1237  * Events for event type EV_CHN_COMMON
 1238  */
 1239 
 1240 #define MIDI_CTL_CHANGE         0xB0
 1241 #define MIDI_PGM_CHANGE         0xC0
 1242 #define MIDI_CHN_PRESSURE       0xD0
 1243 #define MIDI_PITCH_BEND         0xE0
 1244 
 1245 #define MIDI_SYSTEM_PREFIX      0xF0
 1246 
 1247 /*
 1248  * Timer event types
 1249  */
 1250 #define TMR_WAIT_REL            1       /* Time relative to the prev time */
 1251 #define TMR_WAIT_ABS            2       /* Absolute time since TMR_START */
 1252 #define TMR_STOP                3
 1253 #define TMR_START               4
 1254 #define TMR_CONTINUE            5
 1255 #define TMR_TEMPO               6
 1256 #define TMR_ECHO                8
 1257 #define TMR_CLOCK               9       /* MIDI clock */
 1258 #define TMR_SPP                 10      /* Song position pointer */
 1259 #define TMR_TIMESIG             11      /* Time signature */
 1260 
 1261 /*
 1262  *      Local event types
 1263  */
 1264 #define LOCL_STARTAUDIO         1
 1265 
 1266 #if !defined(_KERNEL) || defined(USE_SEQ_MACROS)
 1267 /*
 1268  *      Some convenience macros to simplify programming of the
 1269  *      /dev/sequencer interface
 1270  *
 1271  *      These macros define the API which should be used when possible.
 1272  */
 1273 
 1274 #ifndef USE_SIMPLE_MACROS
 1275 void seqbuf_dump(void); /* This function must be provided by programs */
 1276 
 1277 /* Sample seqbuf_dump() implementation:
 1278  *
 1279  *      SEQ_DEFINEBUF (2048);   -- Defines a buffer for 2048 bytes
 1280  *
 1281  *      int seqfd;              -- The file descriptor for /dev/sequencer.
 1282  *
 1283  *      void
 1284  *      seqbuf_dump ()
 1285  *      {
 1286  *        if (_seqbufptr)
 1287  *          if (write (seqfd, _seqbuf, _seqbufptr) == -1)
 1288  *            {
 1289  *              perror ("write /dev/sequencer");
 1290  *              exit (-1);
 1291  *            }
 1292  *        _seqbufptr = 0;
 1293  *      }
 1294  */
 1295 
 1296 #define SEQ_DEFINEBUF(len)              \
 1297         u_char _seqbuf[len]; int _seqbuflen = len;int _seqbufptr = 0
 1298 #define SEQ_USE_EXTBUF()                \
 1299         extern u_char _seqbuf[]; \
 1300         extern int _seqbuflen;extern int _seqbufptr
 1301 #define SEQ_DECLAREBUF()                SEQ_USE_EXTBUF()
 1302 #define SEQ_PM_DEFINES                  struct patmgr_info _pm_info
 1303 #define _SEQ_NEEDBUF(len)               \
 1304         if ((_seqbufptr+(len)) > _seqbuflen) \
 1305                 seqbuf_dump()
 1306 #define _SEQ_ADVBUF(len)                _seqbufptr += len
 1307 #define SEQ_DUMPBUF                     seqbuf_dump
 1308 #else
 1309 /*
 1310  * This variation of the sequencer macros is used just to format one event
 1311  * using fixed buffer.
 1312  *
 1313  * The program using the macro library must define the following macros before
 1314  * using this library.
 1315  *
 1316  * #define _seqbuf               name of the buffer (u_char[])
 1317  * #define _SEQ_ADVBUF(len)      If the applic needs to know the exact
 1318  *                               size of the event, this macro can be used.
 1319  *                               Otherwise this must be defined as empty.
 1320  * #define _seqbufptr            Define the name of index variable or 0 if
 1321  *                               not required.
 1322  */
 1323 #define _SEQ_NEEDBUF(len)       /* empty */
 1324 #endif
 1325 
 1326 #define PM_LOAD_PATCH(dev, bank, pgm)   \
 1327         (SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
 1328         _pm_info.device=dev, _pm_info.data.data8[0]=pgm, \
 1329         _pm_info.parm1 = bank, _pm_info.parm2 = 1, \
 1330         ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
 1331 #define PM_LOAD_PATCHES(dev, bank, pgm) \
 1332         (SEQ_DUMPBUF(), _pm_info.command = _PM_LOAD_PATCH, \
 1333         _pm_info.device=dev, bcopy( pgm, _pm_info.data.data8,  128), \
 1334         _pm_info.parm1 = bank, _pm_info.parm2 = 128, \
 1335         ioctl(seqfd, SNDCTL_PMGR_ACCESS, &_pm_info))
 1336 
 1337 #define SEQ_VOLUME_MODE(dev, mode)      { \
 1338         _SEQ_NEEDBUF(8);\
 1339         _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
 1340         _seqbuf[_seqbufptr+1] = SEQ_VOLMODE;\
 1341         _seqbuf[_seqbufptr+2] = (dev);\
 1342         _seqbuf[_seqbufptr+3] = (mode);\
 1343         _seqbuf[_seqbufptr+4] = 0;\
 1344         _seqbuf[_seqbufptr+5] = 0;\
 1345         _seqbuf[_seqbufptr+6] = 0;\
 1346         _seqbuf[_seqbufptr+7] = 0;\
 1347         _SEQ_ADVBUF(8);}
 1348 
 1349 /*
 1350  * Midi voice messages
 1351  */
 1352 
 1353 #define _CHN_VOICE(dev, event, chn, note, parm)  { \
 1354         _SEQ_NEEDBUF(8);\
 1355         _seqbuf[_seqbufptr] = EV_CHN_VOICE;\
 1356         _seqbuf[_seqbufptr+1] = (dev);\
 1357         _seqbuf[_seqbufptr+2] = (event);\
 1358         _seqbuf[_seqbufptr+3] = (chn);\
 1359         _seqbuf[_seqbufptr+4] = (note);\
 1360         _seqbuf[_seqbufptr+5] = (parm);\
 1361         _seqbuf[_seqbufptr+6] = (0);\
 1362         _seqbuf[_seqbufptr+7] = 0;\
 1363         _SEQ_ADVBUF(8);}
 1364 
 1365 #define SEQ_START_NOTE(dev, chn, note, vol) \
 1366                 _CHN_VOICE(dev, MIDI_NOTEON, chn, note, vol)
 1367 
 1368 #define SEQ_STOP_NOTE(dev, chn, note, vol) \
 1369                 _CHN_VOICE(dev, MIDI_NOTEOFF, chn, note, vol)
 1370 
 1371 #define SEQ_KEY_PRESSURE(dev, chn, note, pressure) \
 1372                 _CHN_VOICE(dev, MIDI_KEY_PRESSURE, chn, note, pressure)
 1373 
 1374 /*
 1375  * Midi channel messages
 1376  */
 1377 
 1378 #define _CHN_COMMON(dev, event, chn, p1, p2, w14) { \
 1379         _SEQ_NEEDBUF(8);\
 1380         _seqbuf[_seqbufptr] = EV_CHN_COMMON;\
 1381         _seqbuf[_seqbufptr+1] = (dev);\
 1382         _seqbuf[_seqbufptr+2] = (event);\
 1383         _seqbuf[_seqbufptr+3] = (chn);\
 1384         _seqbuf[_seqbufptr+4] = (p1);\
 1385         _seqbuf[_seqbufptr+5] = (p2);\
 1386         *(short *)&_seqbuf[_seqbufptr+6] = (w14);\
 1387         _SEQ_ADVBUF(8);}
 1388 /*
 1389  * SEQ_SYSEX permits sending of sysex messages. (It may look that it permits
 1390  * sending any MIDI bytes but it's absolutely not possible. Trying to do
 1391  * so _will_ cause problems with MPU401 intelligent mode).
 1392  *
 1393  * Sysex messages are sent in blocks of 1 to 6 bytes. Longer messages must be
 1394  * sent by calling SEQ_SYSEX() several times (there must be no other events
 1395  * between them). First sysex fragment must have 0xf0 in the first byte
 1396  * and the last byte (buf[len-1] of the last fragment must be 0xf7. No byte
 1397  * between these sysex start and end markers cannot be larger than 0x7f. Also
 1398  * lengths of each fragments (except the last one) must be 6.
 1399  *
 1400  * Breaking the above rules may work with some MIDI ports but is likely to
 1401  * cause fatal problems with some other devices (such as MPU401).
 1402  */
 1403 #define SEQ_SYSEX(dev, buf, len) { \
 1404         int i, l=(len); if (l>6)l=6;\
 1405         _SEQ_NEEDBUF(8);\
 1406         _seqbuf[_seqbufptr] = EV_SYSEX;\
 1407         for(i=0;i<l;i++)_seqbuf[_seqbufptr+i+1] = (buf)[i];\
 1408         for(i=l;i<6;i++)_seqbuf[_seqbufptr+i+1] = 0xff;\
 1409         _SEQ_ADVBUF(8);}
 1410 
 1411 #define SEQ_CHN_PRESSURE(dev, chn, pressure) \
 1412         _CHN_COMMON(dev, MIDI_CHN_PRESSURE, chn, pressure, 0, 0)
 1413 
 1414 #define SEQ_SET_PATCH(dev, chn, patch) \
 1415         _CHN_COMMON(dev, MIDI_PGM_CHANGE, chn, patch, 0, 0)
 1416 
 1417 #define SEQ_CONTROL(dev, chn, controller, value) \
 1418         _CHN_COMMON(dev, MIDI_CTL_CHANGE, chn, controller, 0, value)
 1419 
 1420 #define SEQ_BENDER(dev, chn, value) \
 1421         _CHN_COMMON(dev, MIDI_PITCH_BEND, chn, 0, 0, value)
 1422 
 1423 
 1424 #define SEQ_V2_X_CONTROL(dev, voice, controller, value) { \
 1425         _SEQ_NEEDBUF(8);\
 1426         _seqbuf[_seqbufptr] = SEQ_EXTENDED;\
 1427         _seqbuf[_seqbufptr+1] = SEQ_CONTROLLER;\
 1428         _seqbuf[_seqbufptr+2] = (dev);\
 1429         _seqbuf[_seqbufptr+3] = (voice);\
 1430         _seqbuf[_seqbufptr+4] = (controller);\
 1431         *(short *)&_seqbuf[_seqbufptr+5] = (value);\
 1432         _seqbuf[_seqbufptr+7] = 0;\
 1433         _SEQ_ADVBUF(8);}
 1434 
 1435 /*
 1436  * The following 5 macros are incorrectly implemented and obsolete.
 1437  * Use SEQ_BENDER and SEQ_CONTROL (with proper controller) instead.
 1438  */
 1439 
 1440 #define SEQ_PITCHBEND(dev, voice, value) \
 1441         SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER, value)
 1442 #define SEQ_BENDER_RANGE(dev, voice, value) \
 1443         SEQ_V2_X_CONTROL(dev, voice, CTRL_PITCH_BENDER_RANGE, value)
 1444 #define SEQ_EXPRESSION(dev, voice, value) \
 1445         SEQ_CONTROL(dev, voice, CTL_EXPRESSION, value*128)
 1446 #define SEQ_MAIN_VOLUME(dev, voice, value) \
 1447         SEQ_CONTROL(dev, voice, CTL_MAIN_VOLUME, (value*16383)/100)
 1448 #define SEQ_PANNING(dev, voice, pos) \
 1449         SEQ_CONTROL(dev, voice, CTL_PAN, (pos+128) / 2)
 1450 
 1451 /*
 1452  * Timing and synchronization macros
 1453  */
 1454 
 1455 #define _TIMER_EVENT(ev, parm)          { \
 1456         _SEQ_NEEDBUF(8);\
 1457         _seqbuf[_seqbufptr+0] = EV_TIMING; \
 1458         _seqbuf[_seqbufptr+1] = (ev); \
 1459         _seqbuf[_seqbufptr+2] = 0;\
 1460         _seqbuf[_seqbufptr+3] = 0;\
 1461         *(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
 1462         _SEQ_ADVBUF(8); \
 1463         }
 1464 
 1465 #define SEQ_START_TIMER()               _TIMER_EVENT(TMR_START, 0)
 1466 #define SEQ_STOP_TIMER()                _TIMER_EVENT(TMR_STOP, 0)
 1467 #define SEQ_CONTINUE_TIMER()            _TIMER_EVENT(TMR_CONTINUE, 0)
 1468 #define SEQ_WAIT_TIME(ticks)            _TIMER_EVENT(TMR_WAIT_ABS, ticks)
 1469 #define SEQ_DELTA_TIME(ticks)           _TIMER_EVENT(TMR_WAIT_REL, ticks)
 1470 #define SEQ_ECHO_BACK(key)              _TIMER_EVENT(TMR_ECHO, key)
 1471 #define SEQ_SET_TEMPO(value)            _TIMER_EVENT(TMR_TEMPO, value)
 1472 #define SEQ_SONGPOS(pos)                _TIMER_EVENT(TMR_SPP, pos)
 1473 #define SEQ_TIME_SIGNATURE(sig)         _TIMER_EVENT(TMR_TIMESIG, sig)
 1474 
 1475 /*
 1476  * Local control events
 1477  */
 1478 
 1479 #define _LOCAL_EVENT(ev, parm)          { \
 1480         _SEQ_NEEDBUF(8);\
 1481         _seqbuf[_seqbufptr+0] = EV_SEQ_LOCAL; \
 1482         _seqbuf[_seqbufptr+1] = (ev); \
 1483         _seqbuf[_seqbufptr+2] = 0;\
 1484         _seqbuf[_seqbufptr+3] = 0;\
 1485         *(u_int *)&_seqbuf[_seqbufptr+4] = (parm); \
 1486         _SEQ_ADVBUF(8); \
 1487         }
 1488 
 1489 #define SEQ_PLAYAUDIO(devmask)          _LOCAL_EVENT(LOCL_STARTAUDIO, devmask)
 1490 /*
 1491  * Events for the level 1 interface only
 1492  */
 1493 
 1494 #define SEQ_MIDIOUT(device, byte)       { \
 1495         _SEQ_NEEDBUF(4);\
 1496         _seqbuf[_seqbufptr] = SEQ_MIDIPUTC;\
 1497         _seqbuf[_seqbufptr+1] = (byte);\
 1498         _seqbuf[_seqbufptr+2] = (device);\
 1499         _seqbuf[_seqbufptr+3] = 0;\
 1500         _SEQ_ADVBUF(4);}
 1501 
 1502 /*
 1503  * Patch loading.
 1504  */
 1505 #define SEQ_WRPATCH(patchx, len)        { \
 1506         if (_seqbufptr) seqbuf_dump(); \
 1507         if (write(seqfd, (char*)(patchx), len)==-1) \
 1508            perror("Write patch: /dev/sequencer"); \
 1509         }
 1510 
 1511 #define SEQ_WRPATCH2(patchx, len)       \
 1512         ( seqbuf_dump(), write(seqfd, (char*)(patchx), len) )
 1513 
 1514 #endif
 1515 
 1516 /*
 1517  * Here I have moved all the aliases for ioctl names.
 1518  */
 1519 
 1520 #define SNDCTL_DSP_SAMPLESIZE   SNDCTL_DSP_SETFMT
 1521 #define SOUND_PCM_WRITE_BITS    SNDCTL_DSP_SETFMT
 1522 #define SOUND_PCM_SETFMT        SNDCTL_DSP_SETFMT
 1523 
 1524 #define SOUND_PCM_WRITE_RATE    SNDCTL_DSP_SPEED
 1525 #define SOUND_PCM_POST          SNDCTL_DSP_POST
 1526 #define SOUND_PCM_RESET         SNDCTL_DSP_RESET
 1527 #define SOUND_PCM_SYNC          SNDCTL_DSP_SYNC
 1528 #define SOUND_PCM_SUBDIVIDE     SNDCTL_DSP_SUBDIVIDE
 1529 #define SOUND_PCM_SETFRAGMENT   SNDCTL_DSP_SETFRAGMENT
 1530 #define SOUND_PCM_GETFMTS       SNDCTL_DSP_GETFMTS
 1531 #define SOUND_PCM_GETOSPACE     SNDCTL_DSP_GETOSPACE
 1532 #define SOUND_PCM_GETISPACE     SNDCTL_DSP_GETISPACE
 1533 #define SOUND_PCM_NONBLOCK      SNDCTL_DSP_NONBLOCK
 1534 #define SOUND_PCM_GETCAPS       SNDCTL_DSP_GETCAPS
 1535 #define SOUND_PCM_GETTRIGGER    SNDCTL_DSP_GETTRIGGER
 1536 #define SOUND_PCM_SETTRIGGER    SNDCTL_DSP_SETTRIGGER
 1537 #define SOUND_PCM_SETSYNCRO     SNDCTL_DSP_SETSYNCRO
 1538 #define SOUND_PCM_GETIPTR       SNDCTL_DSP_GETIPTR
 1539 #define SOUND_PCM_GETOPTR       SNDCTL_DSP_GETOPTR
 1540 #define SOUND_PCM_MAPINBUF      SNDCTL_DSP_MAPINBUF
 1541 #define SOUND_PCM_MAPOUTBUF     SNDCTL_DSP_MAPOUTBUF
 1542 
 1543 /***********************************************************************/
 1544 
 1545 /**
 1546  * XXX OSSv4 defines -- some bits taken straight out of the new
 1547  * sys/soundcard.h bundled with recent OSS releases.
 1548  *
 1549  * NB:  These macros and structures will be reorganized and inserted
 1550  *      in appropriate places throughout this file once the code begins
 1551  *      to take shape.
 1552  *
 1553  * @todo reorganize layout more like the 4Front version
 1554  * @todo ask about maintaining __SIOWR vs. _IOWR ioctl cmd defines
 1555  */
 1556 
 1557 /**
 1558  * @note The @c OSSV4_EXPERIMENT macro is meant to wrap new development code
 1559  * in the sound system relevant to adopting 4Front's OSSv4 specification.
 1560  * Users should not enable this!  Really!
 1561  */
 1562 #if 0
 1563 # define OSSV4_EXPERIMENT 1
 1564 #else
 1565 # undef OSSV4_EXPERIMENT
 1566 #endif
 1567 
 1568 #ifdef SOUND_VERSION
 1569 # undef SOUND_VERSION
 1570 # define SOUND_VERSION  0x040000
 1571 #endif  /* !SOUND_VERSION */
 1572 
 1573 #define OSS_LONGNAME_SIZE       64
 1574 #define OSS_LABEL_SIZE          16
 1575 #define OSS_DEVNODE_SIZE        32
 1576 typedef char oss_longname_t[OSS_LONGNAME_SIZE];
 1577 typedef char oss_label_t[OSS_LABEL_SIZE];
 1578 typedef char oss_devnode_t[OSS_DEVNODE_SIZE];
 1579 
 1580 typedef struct audio_errinfo
 1581 {
 1582         int             play_underruns;
 1583         int             rec_overruns;
 1584         unsigned int    play_ptradjust;
 1585         unsigned int    rec_ptradjust;
 1586         int             play_errorcount;
 1587         int             rec_errorcount;
 1588         int             play_lasterror;
 1589         int             rec_lasterror;
 1590         long            play_errorparm;
 1591         long            rec_errorparm;
 1592         int             filler[16];
 1593 } audio_errinfo;
 1594 
 1595 #define SNDCTL_DSP_GETPLAYVOL           _IOR ('P', 24, int)
 1596 #define SNDCTL_DSP_SETPLAYVOL           _IOWR('P', 24, int)
 1597 #define SNDCTL_DSP_GETERROR             _IOR ('P', 25, audio_errinfo)
 1598 
 1599 
 1600 /*
 1601  ****************************************************************************
 1602  * Sync groups for audio devices
 1603  */
 1604 typedef struct oss_syncgroup
 1605 {
 1606   int id;
 1607   int mode;
 1608   int filler[16];
 1609 } oss_syncgroup;
 1610 
 1611 #define SNDCTL_DSP_SYNCGROUP            _IOWR('P', 28, oss_syncgroup)
 1612 #define SNDCTL_DSP_SYNCSTART            _IOW ('P', 29, int)
 1613 
 1614 /*
 1615  **************************************************************************
 1616  * "cooked" mode enables software based conversions for sample rate, sample
 1617  * format (bits) and number of channels (mono/stereo). These conversions are
 1618  * required with some devices that support only one sample rate or just stereo
 1619  * to let the applications to use other formats. The cooked mode is enabled by
 1620  * default. However it's necessary to disable this mode when mmap() is used or
 1621  * when very deterministic timing is required. SNDCTL_DSP_COOKEDMODE is an
 1622  * optional call introduced in OSS 3.9.6f. It's _error return must be ignored_
 1623  * since normally this call will return erno=EINVAL.
 1624  *
 1625  * SNDCTL_DSP_COOKEDMODE must be called immediately after open before doing
 1626  * anything else. Otherwise the call will not have any effect.
 1627  */
 1628 #define SNDCTL_DSP_COOKEDMODE           _IOW ('P', 30, int)
 1629 
 1630 /*
 1631  **************************************************************************
 1632  * SNDCTL_DSP_SILENCE and SNDCTL_DSP_SKIP are new calls in OSS 3.99.0
 1633  * that can be used to implement pause/continue during playback (no effect
 1634  * on recording).
 1635  */
 1636 #define SNDCTL_DSP_SILENCE              _IO  ('P', 31)
 1637 #define SNDCTL_DSP_SKIP                 _IO  ('P', 32)
 1638 
 1639 /*
 1640  ****************************************************************************
 1641  * Abort transfer (reset) functions for input and output
 1642  */
 1643 #define SNDCTL_DSP_HALT_INPUT           _IO  ('P', 33)
 1644 #define SNDCTL_DSP_RESET_INPUT  SNDCTL_DSP_HALT_INPUT   /* Old name */
 1645 #define SNDCTL_DSP_HALT_OUTPUT          _IO  ('P', 34)
 1646 #define SNDCTL_DSP_RESET_OUTPUT SNDCTL_DSP_HALT_OUTPUT  /* Old name */
 1647 
 1648 /*
 1649  ****************************************************************************
 1650  * Low water level control
 1651  */
 1652 #define SNDCTL_DSP_LOW_WATER            _IOW ('P', 34, int)
 1653 
 1654 /** @todo Get rid of OSS_NO_LONG_LONG references? */
 1655 
 1656 /*
 1657  ****************************************************************************
 1658  * 64 bit pointer support. Only available in environments that support
 1659  * the 64 bit (long long) integer type.
 1660  */
 1661 #ifndef OSS_NO_LONG_LONG
 1662 typedef struct
 1663 {
 1664   long long samples;
 1665   int fifo_samples;
 1666   int filler[32];               /* For future use */
 1667 } oss_count_t;
 1668 
 1669 #define SNDCTL_DSP_CURRENT_IPTR         _IOR ('P', 35, oss_count_t)
 1670 #define SNDCTL_DSP_CURRENT_OPTR         _IOR ('P', 36, oss_count_t)
 1671 #endif
 1672 
 1673 /*
 1674  ****************************************************************************
 1675  * Interface for selecting recording sources and playback output routings.
 1676  */
 1677 #define SNDCTL_DSP_GET_RECSRC_NAMES     _IOR ('P', 37, oss_mixer_enuminfo)
 1678 #define SNDCTL_DSP_GET_RECSRC           _IOR ('P', 38, int)
 1679 #define SNDCTL_DSP_SET_RECSRC           _IOWR('P', 38, int)
 1680 
 1681 #define SNDCTL_DSP_GET_PLAYTGT_NAMES    _IOR ('P', 39, oss_mixer_enuminfo)
 1682 #define SNDCTL_DSP_GET_PLAYTGT          _IOR ('P', 40, int)
 1683 #define SNDCTL_DSP_SET_PLAYTGT          _IOWR('P', 40, int)
 1684 #define SNDCTL_DSP_GETRECVOL            _IOR ('P', 41, int)
 1685 #define SNDCTL_DSP_SETRECVOL            _IOWR('P', 41, int)
 1686 
 1687 /*
 1688  ***************************************************************************
 1689  * Some calls for setting the channel assignment with multi channel devices
 1690  * (see the manual for details).                                                 */
 1691 #define SNDCTL_DSP_GET_CHNORDER         _IOR ('P', 42, unsigned long long)
 1692 #define SNDCTL_DSP_SET_CHNORDER         _IOWR('P', 42, unsigned long long)
 1693 #       define CHID_UNDEF       0
 1694 #       define CHID_L           1
 1695 #       define CHID_R           2
 1696 #       define CHID_C           3
 1697 #       define CHID_LFE         4
 1698 #       define CHID_LS          5
 1699 #       define CHID_RS          6
 1700 #       define CHID_LR          7
 1701 #       define CHID_RR          8
 1702 #define CHNORDER_UNDEF          0x0000000000000000ULL
 1703 #define CHNORDER_NORMAL         0x0000000087654321ULL
 1704 
 1705 #define MAX_PEAK_CHANNELS       128
 1706 typedef unsigned short oss_peaks_t[MAX_PEAK_CHANNELS];
 1707 #define SNDCTL_DSP_GETIPEAKS            _IOR('P', 43, oss_peaks_t)
 1708 #define SNDCTL_DSP_GETOPEAKS            _IOR('P', 44, oss_peaks_t)
 1709 #define SNDCTL_DSP_POLICY               _IOW('P', 45, int)    /* See the manual */
 1710 
 1711 /*
 1712  ****************************************************************************
 1713  * Few ioctl calls that are not official parts of OSS. They have been used
 1714  * by few freeware implementations of OSS.
 1715  */
 1716 #define SNDCTL_DSP_GETCHANNELMASK       _IOWR('P', 64, int)
 1717 #define SNDCTL_DSP_BIND_CHANNEL         _IOWR('P', 65, int)
 1718 #define DSP_BIND_QUERY                  0x00000000
 1719 #define DSP_BIND_FRONT                  0x00000001
 1720 #define DSP_BIND_SURR                   0x00000002
 1721 #define DSP_BIND_CENTER_LFE             0x00000004
 1722 #define DSP_BIND_HANDSET                0x00000008
 1723 #define DSP_BIND_MIC                    0x00000010
 1724 #define DSP_BIND_MODEM1                 0x00000020
 1725 #define DSP_BIND_MODEM2                 0x00000040
 1726 #define DSP_BIND_I2S                    0x00000080
 1727 #define DSP_BIND_SPDIF                  0x00000100
 1728 #define DSP_BIND_REAR                   0x00000200
 1729 
 1730 /*
 1731  * OSS_SYSIFO is obsolete. Use SNDCTL_SYSINFO insteads.
 1732  */
 1733 #define OSS_GETVERSION                  _IOR ('M', 118, int)
 1734 
 1735 /**
 1736  * @brief       Argument for SNDCTL_SYSINFO ioctl.
 1737  *
 1738  * For use w/ the SNDCTL_SYSINFO ioctl available on audio (/dev/dsp*),
 1739  * mixer, and MIDI devices.
 1740  */
 1741 typedef struct oss_sysinfo
 1742 {
 1743         char    product[32];    /* For example OSS/Free, OSS/Linux or
 1744                                    OSS/Solaris */
 1745         char    version[32];    /* For example 4.0a */
 1746         int     versionnum;     /* See OSS_GETVERSION */
 1747         char    options[128];   /* Reserved */
 1748 
 1749         int     numaudios;      /* # of audio/dsp devices */
 1750         int     openedaudio[8]; /* Bit mask telling which audio devices
 1751                                    are busy */
 1752 
 1753         int     numsynths;      /* # of availavle synth devices */
 1754         int     nummidis;       /* # of available MIDI ports */
 1755         int     numtimers;      /* # of available timer devices */
 1756         int     nummixers;      /* # of mixer devices */
 1757 
 1758         int     openedmidi[8];  /* Bit mask telling which midi devices
 1759                                    are busy */
 1760         int     numcards;       /* Number of sound cards in the system */
 1761         int     numaudioengines;        /* Number of audio engines in the system */
 1762         char    license[16];    /* For example "GPL" or "CDDL" */
 1763         char    revision_info[256];     /* For internal use */
 1764         int     filler[172];    /* For future expansion (set to -1) */
 1765 } oss_sysinfo;
 1766 
 1767 typedef struct oss_mixext
 1768 {
 1769   int dev;                      /* Mixer device number */
 1770   int ctrl;                     /* Controller number */
 1771   int type;                     /* Entry type */
 1772 #       define MIXT_DEVROOT      0      /* Device root entry */
 1773 #       define MIXT_GROUP        1      /* Controller group */
 1774 #       define MIXT_ONOFF        2      /* OFF (0) or ON (1) */
 1775 #       define MIXT_ENUM         3      /* Enumerated (0 to maxvalue) */
 1776 #       define MIXT_MONOSLIDER   4      /* Mono slider (0 to 100) */
 1777 #       define MIXT_STEREOSLIDER 5      /* Stereo slider (dual 0 to 100) */
 1778 #       define MIXT_MESSAGE      6      /* (Readable) textual message */
 1779 #       define MIXT_MONOVU       7      /* VU meter value (mono) */
 1780 #       define MIXT_STEREOVU     8      /* VU meter value (stereo) */
 1781 #       define MIXT_MONOPEAK     9      /* VU meter peak value (mono) */
 1782 #       define MIXT_STEREOPEAK  10      /* VU meter peak value (stereo) */
 1783 #       define MIXT_RADIOGROUP  11      /* Radio button group */
 1784 #       define MIXT_MARKER      12      /* Separator between normal and extension entries */
 1785 #       define MIXT_VALUE       13      /* Decimal value entry */
 1786 #       define MIXT_HEXVALUE    14      /* Hexadecimal value entry */
 1787 #       define MIXT_MONODB      15      /* Mono atten. slider (0 to -144) */
 1788 #       define MIXT_STEREODB    16      /* Stereo atten. slider (dual 0 to -144) */
 1789 #       define MIXT_SLIDER      17      /* Slider (mono) with full integer range */
 1790 #       define MIXT_3D          18
 1791 
 1792   /* Possible value range (minvalue to maxvalue) */
 1793   /* Note that maxvalue may also be smaller than minvalue */
 1794   int maxvalue;
 1795   int minvalue;
 1796 
 1797   int flags;
 1798 #       define MIXF_READABLE    0x00000001      /* Has readable value */
 1799 #       define MIXF_WRITEABLE   0x00000002      /* Has writeable value */
 1800 #       define MIXF_POLL        0x00000004      /* May change itself */
 1801 #       define MIXF_HZ          0x00000008      /* Herz scale */
 1802 #       define MIXF_STRING      0x00000010      /* Use dynamic extensions for value */
 1803 #       define MIXF_DYNAMIC     0x00000010      /* Supports dynamic extensions */
 1804 #       define MIXF_OKFAIL      0x00000020      /* Interpret value as 1=OK, 0=FAIL */
 1805 #       define MIXF_FLAT        0x00000040      /* Flat vertical space requirements */
 1806 #       define MIXF_LEGACY      0x00000080      /* Legacy mixer control group */
 1807   char id[16];                  /* Mnemonic ID (mainly for internal use) */
 1808   int parent;                   /* Entry# of parent (group) node (-1 if root) */
 1809 
 1810   int dummy;                    /* Internal use */
 1811 
 1812   int timestamp;
 1813 
 1814   char data[64];                /* Misc data (entry type dependent) */
 1815   unsigned char enum_present[32];       /* Mask of allowed enum values */
 1816   int control_no;               /* SOUND_MIXER_VOLUME..SOUND_MIXER_MIDI */
 1817   /* (-1 means not indicated) */
 1818 
 1819 /*
 1820  * The desc field is reserved for internal purposes of OSS. It should not be 
 1821  * used by applications.
 1822  */
 1823   unsigned int desc;
 1824 #define MIXEXT_SCOPE_MASK                       0x0000003f
 1825 #define MIXEXT_SCOPE_OTHER                      0x00000000
 1826 #define MIXEXT_SCOPE_INPUT                      0x00000001
 1827 #define MIXEXT_SCOPE_OUTPUT                     0x00000002
 1828 #define MIXEXT_SCOPE_MONITOR                    0x00000003
 1829 #define MIXEXT_SCOPE_RECSWITCH                  0x00000004
 1830 
 1831   char extname[32];
 1832   int update_counter;
 1833   int filler[7];
 1834 } oss_mixext;
 1835 
 1836 typedef struct oss_mixext_root
 1837 {
 1838   char id[16];
 1839   char name[48];
 1840 } oss_mixext_root;
 1841 
 1842 typedef struct oss_mixer_value
 1843 {
 1844   int dev;
 1845   int ctrl;
 1846   int value;
 1847   int flags;                    /* Reserved for future use. Initialize to 0 */
 1848   int timestamp;                /* Must be set to oss_mixext.timestamp */
 1849   int filler[8];                /* Reserved for future use. Initialize to 0 */
 1850 } oss_mixer_value;
 1851 
 1852 #define OSS_ENUM_MAXVALUE       255
 1853 typedef struct oss_mixer_enuminfo
 1854 {
 1855         int     dev;
 1856         int     ctrl;
 1857         int     nvalues;
 1858         int     version;                  /* Read the manual */
 1859         short   strindex[OSS_ENUM_MAXVALUE];
 1860         char    strings[3000];
 1861 } oss_mixer_enuminfo;
 1862 
 1863 #define OPEN_READ       PCM_ENABLE_INPUT
 1864 #define OPEN_WRITE      PCM_ENABLE_OUTPUT
 1865 #define OPEN_READWRITE  (OPEN_READ|OPEN_WRITE)
 1866 
 1867 /**
 1868  * @brief       Argument for SNDCTL_AUDIOINFO ioctl.
 1869  *
 1870  * For use w/ the SNDCTL_AUDIOINFO ioctl available on audio (/dev/dsp*)
 1871  * devices.
 1872  */
 1873 typedef struct oss_audioinfo
 1874 {
 1875         int     dev;            /* Audio device number */
 1876         char    name[64];
 1877         int     busy;           /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
 1878         int     pid;
 1879         int     caps;           /* DSP_CAP_INPUT, DSP_CAP_OUTPUT */
 1880         int     iformats;
 1881         int     oformats;
 1882         int     magic;          /* Reserved for internal use */
 1883         char    cmd[64];        /* Command using the device (if known) */
 1884         int     card_number;
 1885         int     port_number;
 1886         int     mixer_dev;
 1887         int     real_device;    /* Obsolete field. Replaced by devnode */
 1888         int     enabled;        /* 1=enabled, 0=device not ready at this
 1889                                    moment */
 1890         int     flags;          /* For internal use only - no practical
 1891                                    meaning */
 1892         int     min_rate;       /* Sample rate limits */
 1893         int     max_rate;
 1894         int     min_channels;   /* Number of channels supported */
 1895         int     max_channels;
 1896         int     binding;        /* DSP_BIND_FRONT, etc. 0 means undefined */
 1897         int     rate_source;
 1898         char    handle[32];
 1899         #define OSS_MAX_SAMPLE_RATES    20      /* Cannot be changed  */
 1900         unsigned int nrates;
 1901         unsigned int rates[OSS_MAX_SAMPLE_RATES]; /* Please read the manual before using these */
 1902         oss_longname_t  song_name;      /* Song name (if given) */
 1903         oss_label_t     label;          /* Device label (if given) */
 1904         int             latency;        /* In usecs, -1=unknown */
 1905         oss_devnode_t   devnode;        /* Device special file name (inside
 1906                                            /dev) */
 1907         int next_play_engine;
 1908         int next_rec_engine;
 1909         int filler[184];
 1910 } oss_audioinfo;
 1911 
 1912 typedef struct oss_mixerinfo
 1913 {
 1914   int dev;
 1915   char id[16];
 1916   char name[32];
 1917   int modify_counter;
 1918   int card_number;
 1919   int port_number;
 1920   char handle[32];
 1921   int magic;                    /* Reserved */
 1922   int enabled;                  /* Reserved */
 1923   int caps;
 1924 #define MIXER_CAP_VIRTUAL                               0x00000001
 1925   int flags;                    /* Reserved */
 1926   int nrext;
 1927   /*
 1928    * The priority field can be used to select the default (motherboard)
 1929    * mixer device. The mixer with the highest priority is the
 1930    * most preferred one. -2 or less means that this device cannot be used
 1931    * as the default mixer.
 1932    */
 1933   int priority;
 1934   int filler[254];              /* Reserved */
 1935 } oss_mixerinfo;
 1936 
 1937 typedef struct oss_midi_info
 1938 {
 1939   int dev;                      /* Midi device number */
 1940   char name[64];
 1941   int busy;                     /* 0, OPEN_READ, OPEN_WRITE or OPEN_READWRITE */
 1942   int pid;
 1943   char cmd[64];                 /* Command using the device (if known) */
 1944   int caps;
 1945 #define MIDI_CAP_MPU401         0x00000001      /**** OBSOLETE ****/
 1946 #define MIDI_CAP_INPUT          0x00000002
 1947 #define MIDI_CAP_OUTPUT         0x00000004
 1948 #define MIDI_CAP_INOUT          (MIDI_CAP_INPUT|MIDI_CAP_OUTPUT)
 1949 #define MIDI_CAP_VIRTUAL        0x00000008      /* Pseudo device */
 1950 #define MIDI_CAP_MTCINPUT       0x00000010      /* Supports SNDCTL_MIDI_MTCINPUT */
 1951 #define MIDI_CAP_CLIENT         0x00000020      /* Virtual client side device */
 1952 #define MIDI_CAP_SERVER         0x00000040      /* Virtual server side device */
 1953 #define MIDI_CAP_INTERNAL       0x00000080      /* Internal (synth) device */
 1954 #define MIDI_CAP_EXTERNAL       0x00000100      /* external (MIDI port) device */
 1955 #define MIDI_CAP_PTOP           0x00000200      /* Point to point link to one device */
 1956 #define MIDI_CAP_MTC            0x00000400      /* MTC/SMPTE (control) device */
 1957   int magic;                    /* Reserved for internal use */
 1958   int card_number;
 1959   int port_number;
 1960   int enabled;                  /* 1=enabled, 0=device not ready at this moment */
 1961   int flags;                    /* For internal use only - no practical meaning */
 1962   char handle[32];
 1963   oss_longname_t song_name;     /* Song name (if known) */
 1964   oss_label_t label;            /* Device label (if given) */
 1965   int latency;                  /* In usecs, -1=unknown */
 1966   int filler[244];
 1967 } oss_midi_info;
 1968 
 1969 typedef struct oss_card_info
 1970 {
 1971   int card;
 1972   char shortname[16];
 1973   char longname[128];
 1974   int flags;
 1975   char hw_info[400];
 1976   int intr_count, ack_count;
 1977   int filler[154];
 1978 } oss_card_info;
 1979 
 1980 #define SNDCTL_SYSINFO          _IOR ('X', 1, oss_sysinfo)
 1981 #define OSS_SYSINFO             SNDCTL_SYSINFO /* Old name */
 1982 
 1983 #define SNDCTL_MIX_NRMIX        _IOR ('X', 2, int)
 1984 #define SNDCTL_MIX_NREXT        _IOWR('X', 3, int)
 1985 #define SNDCTL_MIX_EXTINFO      _IOWR('X', 4, oss_mixext)
 1986 #define SNDCTL_MIX_READ         _IOWR('X', 5, oss_mixer_value)
 1987 #define SNDCTL_MIX_WRITE        _IOWR('X', 6, oss_mixer_value)
 1988 
 1989 #define SNDCTL_AUDIOINFO        _IOWR('X', 7, oss_audioinfo)
 1990 #define SNDCTL_MIX_ENUMINFO     _IOWR('X', 8, oss_mixer_enuminfo)
 1991 #define SNDCTL_MIDIINFO         _IOWR('X', 9, oss_midi_info)
 1992 #define SNDCTL_MIXERINFO        _IOWR('X',10, oss_mixerinfo)
 1993 #define SNDCTL_CARDINFO         _IOWR('X',11, oss_card_info)
 1994 #define SNDCTL_ENGINEINFO       _IOWR('X',12, oss_audioinfo)
 1995 #define SNDCTL_AUDIOINFO_EX     _IOWR('X',13, oss_audioinfo)
 1996 
 1997 /*
 1998  * Few more "globally" available ioctl calls.
 1999  */
 2000 #define SNDCTL_SETSONG          _IOW ('Y', 2, oss_longname_t)
 2001 #define SNDCTL_GETSONG          _IOR ('Y', 2, oss_longname_t)
 2002 #define SNDCTL_SETNAME          _IOW ('Y', 3, oss_longname_t)
 2003 #define SNDCTL_SETLABEL         _IOW ('Y', 4, oss_label_t)
 2004 #define SNDCTL_GETLABEL         _IOR ('Y', 4, oss_label_t)
 2005 
 2006 #endif  /* !_SYS_SOUNDCARD_H_ */

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