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

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

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