include/sound/asequencer.h

   1 /*
   2  *  Main header file for the ALSA sequencer
   3  *  Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
   4  *            (c) 1998-1999 by Jaroslav Kysela <perex@suse.cz>
   5  *
   6  *
   7  *   This program is free software; you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License as published by
   9  *   the Free Software Foundation; either version 2 of the License, or
  10  *   (at your option) any later version.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program; if not, write to the Free Software
  19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20  *
  21  */
  22 #ifndef __SOUND_ASEQUENCER_H
  23 #define __SOUND_ASEQUENCER_H
  24
  25 #ifdef __KERNEL__
  26 #include <linux/ioctl.h>
  27 #include <sound/asound.h>
  28 #endif
  29
  30 /** version of the sequencer */
  31 #define SNDRV_SEQ_VERSION SNDRV_PROTOCOL_VERSION (1, 0, 1)
  32
  33 /**
  34  * definition of sequencer event types
  35  */
  36
  37 /** system messages
  38  * event data type = #snd_seq_result
  39  */
  40 #define SNDRV_SEQ_EVENT_SYSTEM          0
  41 #define SNDRV_SEQ_EVENT_RESULT          1
  42
  43 /** note messages (channel specific)
  44  * event data type = #snd_seq_ev_note
  45  */
  46 #define SNDRV_SEQ_EVENT_NOTE            5
  47 #define SNDRV_SEQ_EVENT_NOTEON          6
  48 #define SNDRV_SEQ_EVENT_NOTEOFF         7
  49 #define SNDRV_SEQ_EVENT_KEYPRESS        8
  50
  51 /** control messages (channel specific)
  52  * event data type = #snd_seq_ev_ctrl
  53  */
  54 #define SNDRV_SEQ_EVENT_CONTROLLER      10
  55 #define SNDRV_SEQ_EVENT_PGMCHANGE       11
  56 #define SNDRV_SEQ_EVENT_CHANPRESS       12
  57 #define SNDRV_SEQ_EVENT_PITCHBEND       13      /**< from -8192 to 8191 */
  58 #define SNDRV_SEQ_EVENT_CONTROL14       14      /**< 14 bit controller value */
  59 #define SNDRV_SEQ_EVENT_NONREGPARAM     15      /**< 14 bit NRPN address + 14 bit unsigned value */
  60 #define SNDRV_SEQ_EVENT_REGPARAM        16      /**< 14 bit RPN address + 14 bit unsigned value */
  61
  62 /** synchronisation messages
  63  * event data type = #snd_seq_ev_ctrl
  64  */
  65 #define SNDRV_SEQ_EVENT_SONGPOS         20      /* Song Position Pointer with LSB and MSB values */
  66 #define SNDRV_SEQ_EVENT_SONGSEL         21      /* Song Select with song ID number */
  67 #define SNDRV_SEQ_EVENT_QFRAME          22      /* midi time code quarter frame */
  68 #define SNDRV_SEQ_EVENT_TIMESIGN        23      /* SMF Time Signature event */
  69 #define SNDRV_SEQ_EVENT_KEYSIGN         24      /* SMF Key Signature event */
  70
  71 /** timer messages
  72  * event data type = snd_seq_ev_queue_control
  73  */
  74 #define SNDRV_SEQ_EVENT_START           30      /* midi Real Time Start message */
  75 #define SNDRV_SEQ_EVENT_CONTINUE        31      /* midi Real Time Continue message */
  76 #define SNDRV_SEQ_EVENT_STOP            32      /* midi Real Time Stop message */
  77 #define SNDRV_SEQ_EVENT_SETPOS_TICK     33      /* set tick queue position */
  78 #define SNDRV_SEQ_EVENT_SETPOS_TIME     34      /* set realtime queue position */
  79 #define SNDRV_SEQ_EVENT_TEMPO           35      /* (SMF) Tempo event */
  80 #define SNDRV_SEQ_EVENT_CLOCK           36      /* midi Real Time Clock message */
  81 #define SNDRV_SEQ_EVENT_TICK            37      /* midi Real Time Tick message */
  82 #define SNDRV_SEQ_EVENT_QUEUE_SKEW      38      /* skew queue tempo */
  83
  84 /** others
  85  * event data type = none
  86  */
  87 #define SNDRV_SEQ_EVENT_TUNE_REQUEST    40      /* tune request */
  88 #define SNDRV_SEQ_EVENT_RESET           41      /* reset to power-on state */
  89 #define SNDRV_SEQ_EVENT_SENSING         42      /* "active sensing" event */
  90
  91 /** echo back, kernel private messages
  92  * event data type = any type
  93  */
  94 #define SNDRV_SEQ_EVENT_ECHO            50      /* echo event */
  95 #define SNDRV_SEQ_EVENT_OSS             51      /* OSS raw event */
  96
  97 /** system status messages (broadcast for subscribers)
  98  * event data type = snd_seq_addr
  99  */
 100 #define SNDRV_SEQ_EVENT_CLIENT_START    60      /* new client has connected */
 101 #define SNDRV_SEQ_EVENT_CLIENT_EXIT     61      /* client has left the system */
 102 #define SNDRV_SEQ_EVENT_CLIENT_CHANGE   62      /* client status/info has changed */
 103 #define SNDRV_SEQ_EVENT_PORT_START      63      /* new port was created */
 104 #define SNDRV_SEQ_EVENT_PORT_EXIT       64      /* port was deleted from system */
 105 #define SNDRV_SEQ_EVENT_PORT_CHANGE     65      /* port status/info has changed */
 106
 107 /** port connection changes
 108  * event data type = snd_seq_connect
 109  */
 110 #define SNDRV_SEQ_EVENT_PORT_SUBSCRIBED 66      /* ports connected */
 111 #define SNDRV_SEQ_EVENT_PORT_UNSUBSCRIBED 67    /* ports disconnected */
 112
 113 /** synthesizer events
 114  * event data type = snd_seq_eve_sample_control
 115  */
 116 #define SNDRV_SEQ_EVENT_SAMPLE          70      /* sample select */
 117 #define SNDRV_SEQ_EVENT_SAMPLE_CLUSTER  71      /* sample cluster select */
 118 #define SNDRV_SEQ_EVENT_SAMPLE_START    72      /* voice start */
 119 #define SNDRV_SEQ_EVENT_SAMPLE_STOP     73      /* voice stop */
 120 #define SNDRV_SEQ_EVENT_SAMPLE_FREQ     74      /* playback frequency */
 121 #define SNDRV_SEQ_EVENT_SAMPLE_VOLUME   75      /* volume and balance */
 122 #define SNDRV_SEQ_EVENT_SAMPLE_LOOP     76      /* sample loop */
 123 #define SNDRV_SEQ_EVENT_SAMPLE_POSITION 77      /* sample position */
 124 #define SNDRV_SEQ_EVENT_SAMPLE_PRIVATE1 78      /* private (hardware dependent) event */
 125
 126 /** user-defined events with fixed length
 127  * event data type = any
 128  */
 129 #define SNDRV_SEQ_EVENT_USR0            90
 130 #define SNDRV_SEQ_EVENT_USR1            91
 131 #define SNDRV_SEQ_EVENT_USR2            92
 132 #define SNDRV_SEQ_EVENT_USR3            93
 133 #define SNDRV_SEQ_EVENT_USR4            94
 134 #define SNDRV_SEQ_EVENT_USR5            95
 135 #define SNDRV_SEQ_EVENT_USR6            96
 136 #define SNDRV_SEQ_EVENT_USR7            97
 137 #define SNDRV_SEQ_EVENT_USR8            98
 138 #define SNDRV_SEQ_EVENT_USR9            99
 139
 140 /** instrument layer
 141  * variable length data can be passed directly to the driver
 142  */
 143 #define SNDRV_SEQ_EVENT_INSTR_BEGIN     100     /* begin of instrument management */
 144 #define SNDRV_SEQ_EVENT_INSTR_END       101     /* end of instrument management */
 145 #define SNDRV_SEQ_EVENT_INSTR_INFO      102     /* instrument interface info */
 146 #define SNDRV_SEQ_EVENT_INSTR_INFO_RESULT 103   /* result */
 147 #define SNDRV_SEQ_EVENT_INSTR_FINFO     104     /* get format info */
 148 #define SNDRV_SEQ_EVENT_INSTR_FINFO_RESULT 105  /* get format info */
 149 #define SNDRV_SEQ_EVENT_INSTR_RESET     106     /* reset instrument memory */
 150 #define SNDRV_SEQ_EVENT_INSTR_STATUS    107     /* instrument interface status */
 151 #define SNDRV_SEQ_EVENT_INSTR_STATUS_RESULT 108 /* result */
 152 #define SNDRV_SEQ_EVENT_INSTR_PUT       109     /* put instrument to port */
 153 #define SNDRV_SEQ_EVENT_INSTR_GET       110     /* get instrument from port */
 154 #define SNDRV_SEQ_EVENT_INSTR_GET_RESULT 111    /* result */
 155 #define SNDRV_SEQ_EVENT_INSTR_FREE      112     /* free instrument(s) */
 156 #define SNDRV_SEQ_EVENT_INSTR_LIST      113     /* instrument list */
 157 #define SNDRV_SEQ_EVENT_INSTR_LIST_RESULT 114   /* result */
 158 #define SNDRV_SEQ_EVENT_INSTR_CLUSTER   115     /* cluster parameters */
 159 #define SNDRV_SEQ_EVENT_INSTR_CLUSTER_GET 116   /* get cluster parameters */
 160 #define SNDRV_SEQ_EVENT_INSTR_CLUSTER_RESULT 117 /* result */
 161 #define SNDRV_SEQ_EVENT_INSTR_CHANGE    118     /* instrument change */
 162 /* 119-129: reserved */
 163
 164 /* 130-139: variable length events
 165  * event data type = snd_seq_ev_ext
 166  * (SNDRV_SEQ_EVENT_LENGTH_VARIABLE must be set)
 167  */
 168 #define SNDRV_SEQ_EVENT_SYSEX           130     /* system exclusive data (variable length) */
 169 #define SNDRV_SEQ_EVENT_BOUNCE          131     /* error event */
 170 /* 132-134: reserved */
 171 #define SNDRV_SEQ_EVENT_USR_VAR0        135
 172 #define SNDRV_SEQ_EVENT_USR_VAR1        136
 173 #define SNDRV_SEQ_EVENT_USR_VAR2        137
 174 #define SNDRV_SEQ_EVENT_USR_VAR3        138
 175 #define SNDRV_SEQ_EVENT_USR_VAR4        139
 176
 177 /* 150-151: kernel events with quote - DO NOT use in user clients */
 178 #define SNDRV_SEQ_EVENT_KERNEL_ERROR    150
 179 #define SNDRV_SEQ_EVENT_KERNEL_QUOTE    151     /* obsolete */
 180
 181 /* 152-191: reserved */
 182
 183 /* 192-254: hardware specific events */
 184
 185 /* 255: special event */
 186 #define SNDRV_SEQ_EVENT_NONE            255
 187
 188
 189 typedef unsigned char snd_seq_event_type_t;
 190
 191 /** event address */
 192 struct snd_seq_addr {
 193         unsigned char client;   /**< Client number:         0..255, 255 = broadcast to all clients */
 194         unsigned char port;     /**< Port within client:    0..255, 255 = broadcast to all ports */
 195 };
 196
 197 /** port connection */
 198 struct snd_seq_connect {
 199         struct snd_seq_addr sender;
 200         struct snd_seq_addr dest;
 201 };
 202
 203
 204 #define SNDRV_SEQ_ADDRESS_UNKNOWN       253     /* unknown source */
 205 #define SNDRV_SEQ_ADDRESS_SUBSCRIBERS   254     /* send event to all subscribed ports */
 206 #define SNDRV_SEQ_ADDRESS_BROADCAST     255     /* send event to all queues/clients/ports/channels */
 207 #define SNDRV_SEQ_QUEUE_DIRECT          253     /* direct dispatch */
 208
 209         /* event mode flag - NOTE: only 8 bits available! */
 210 #define SNDRV_SEQ_TIME_STAMP_TICK       (0<<0) /* timestamp in clock ticks */
 211 #define SNDRV_SEQ_TIME_STAMP_REAL       (1<<0) /* timestamp in real time */
 212 #define SNDRV_SEQ_TIME_STAMP_MASK       (1<<0)
 213
 214 #define SNDRV_SEQ_TIME_MODE_ABS         (0<<1)  /* absolute timestamp */
 215 #define SNDRV_SEQ_TIME_MODE_REL         (1<<1)  /* relative to current time */
 216 #define SNDRV_SEQ_TIME_MODE_MASK        (1<<1)
 217
 218 #define SNDRV_SEQ_EVENT_LENGTH_FIXED    (0<<2)  /* fixed event size */
 219 #define SNDRV_SEQ_EVENT_LENGTH_VARIABLE (1<<2)  /* variable event size */
 220 #define SNDRV_SEQ_EVENT_LENGTH_VARUSR   (2<<2)  /* variable event size - user memory space */
 221 #define SNDRV_SEQ_EVENT_LENGTH_MASK     (3<<2)
 222
 223 #define SNDRV_SEQ_PRIORITY_NORMAL       (0<<4)  /* normal priority */
 224 #define SNDRV_SEQ_PRIORITY_HIGH         (1<<4)  /* event should be processed before others */
 225 #define SNDRV_SEQ_PRIORITY_MASK         (1<<4)
 226
 227
 228         /* note event */
 229 struct snd_seq_ev_note {
 230         unsigned char channel;
 231         unsigned char note;
 232         unsigned char velocity;
 233         unsigned char off_velocity;     /* only for SNDRV_SEQ_EVENT_NOTE */
 234         unsigned int duration;          /* only for SNDRV_SEQ_EVENT_NOTE */
 235 };
 236
 237         /* controller event */
 238 struct snd_seq_ev_ctrl {
 239         unsigned char channel;
 240         unsigned char unused1, unused2, unused3;        /* pad */
 241         unsigned int param;
 242         signed int value;
 243 };
 244
 245         /* generic set of bytes (12x8 bit) */
 246 struct snd_seq_ev_raw8 {
 247         unsigned char d[12];    /* 8 bit value */
 248 };
 249
 250         /* generic set of integers (3x32 bit) */
 251 struct snd_seq_ev_raw32 {
 252         unsigned int d[3];      /* 32 bit value */
 253 };
 254
 255         /* external stored data */
 256 struct snd_seq_ev_ext {
 257         unsigned int len;       /* length of data */
 258         void *ptr;              /* pointer to data (note: maybe 64-bit) */
 259 } __attribute__((packed));
 260
 261 /* Instrument cluster type */
 262 typedef unsigned int snd_seq_instr_cluster_t;
 263
 264 /* Instrument type */
 265 struct snd_seq_instr {
 266         snd_seq_instr_cluster_t cluster;
 267         unsigned int std;               /* the upper byte means a private instrument (owner - client #) */
 268         unsigned short bank;
 269         unsigned short prg;
 270 };
 271
 272         /* sample number */
 273 struct snd_seq_ev_sample {
 274         unsigned int std;
 275         unsigned short bank;
 276         unsigned short prg;
 277 };
 278
 279         /* sample cluster */
 280 struct snd_seq_ev_cluster {
 281         snd_seq_instr_cluster_t cluster;
 282 };
 283
 284         /* sample position */
 285 typedef unsigned int snd_seq_position_t; /* playback position (in samples) * 16 */
 286
 287         /* sample stop mode */
 288 enum {
 289         SAMPLE_STOP_IMMEDIATELY = 0,    /* terminate playing immediately */
 290         SAMPLE_STOP_VENVELOPE = 1,      /* finish volume envelope */
 291         SAMPLE_STOP_LOOP = 2            /* terminate loop and finish wave */
 292 };
 293
 294         /* sample frequency */
 295 typedef int snd_seq_frequency_t; /* playback frequency in HZ * 16 */
 296
 297         /* sample volume control; if any value is set to -1 == do not change */
 298 struct snd_seq_ev_volume {
 299         signed short volume;    /* range: 0-16383 */
 300         signed short lr;        /* left-right balance; range: 0-16383 */
 301         signed short fr;        /* front-rear balance; range: 0-16383 */
 302         signed short du;        /* down-up balance; range: 0-16383 */
 303 };
 304
 305         /* simple loop redefinition */
 306 struct snd_seq_ev_loop {
 307         unsigned int start;     /* loop start (in samples) * 16 */
 308         unsigned int end;       /* loop end (in samples) * 16 */
 309 };
 310
 311 struct snd_seq_ev_sample_control {
 312         unsigned char channel;
 313         unsigned char unused1, unused2, unused3;        /* pad */
 314         union {
 315                 struct snd_seq_ev_sample sample;
 316                 struct snd_seq_ev_cluster cluster;
 317                 snd_seq_position_t position;
 318                 int stop_mode;
 319                 snd_seq_frequency_t frequency;
 320                 struct snd_seq_ev_volume volume;
 321                 struct snd_seq_ev_loop loop;
 322                 unsigned char raw8[8];
 323         } param;
 324 };
 325
 326
 327
 328 /* INSTR_BEGIN event */
 329 struct snd_seq_ev_instr_begin {
 330         int timeout;            /* zero = forever, otherwise timeout in ms */
 331 };
 332
 333 struct snd_seq_result {
 334         int event;              /* processed event type */
 335         int result;
 336 };
 337
 338
 339 struct snd_seq_real_time {
 340         unsigned int tv_sec;    /* seconds */
 341         unsigned int tv_nsec;   /* nanoseconds */
 342 };
 343
 344 typedef unsigned int snd_seq_tick_time_t;       /* midi ticks */
 345
 346 union snd_seq_timestamp {
 347         snd_seq_tick_time_t tick;
 348         struct snd_seq_real_time time;
 349 };
 350
 351 struct snd_seq_queue_skew {
 352         unsigned int value;
 353         unsigned int base;
 354 };
 355
 356         /* queue timer control */
 357 struct snd_seq_ev_queue_control {
 358         unsigned char queue;                    /* affected queue */
 359         unsigned char pad[3];                   /* reserved */
 360         union {
 361                 signed int value;               /* affected value (e.g. tempo) */
 362                 union snd_seq_timestamp time;   /* time */
 363                 unsigned int position;          /* sync position */
 364                 struct snd_seq_queue_skew skew;
 365                 unsigned int d32[2];
 366                 unsigned char d8[8];
 367         } param;
 368 };
 369
 370         /* quoted event - inside the kernel only */
 371 struct snd_seq_ev_quote {
 372         struct snd_seq_addr origin;             /* original sender */
 373         unsigned short value;           /* optional data */
 374         struct snd_seq_event *event;            /* quoted event */
 375 } __attribute__((packed));
 376
 377
 378         /* sequencer event */
 379 struct snd_seq_event {
 380         snd_seq_event_type_t type;      /* event type */
 381         unsigned char flags;            /* event flags */
 382         char tag;
 383
 384         unsigned char queue;            /* schedule queue */
 385         union snd_seq_timestamp time;   /* schedule time */
 386
 387
 388         struct snd_seq_addr source;     /* source address */
 389         struct snd_seq_addr dest;       /* destination address */
 390
 391         union {                         /* event data... */
 392                 struct snd_seq_ev_note note;
 393                 struct snd_seq_ev_ctrl control;
 394                 struct snd_seq_ev_raw8 raw8;
 395                 struct snd_seq_ev_raw32 raw32;
 396                 struct snd_seq_ev_ext ext;
 397                 struct snd_seq_ev_queue_control queue;
 398                 union snd_seq_timestamp time;
 399                 struct snd_seq_addr addr;
 400                 struct snd_seq_connect connect;
 401                 struct snd_seq_result result;
 402                 struct snd_seq_ev_instr_begin instr_begin;
 403                 struct snd_seq_ev_sample_control sample;
 404                 struct snd_seq_ev_quote quote;
 405         } data;
 406 };
 407
 408
 409 /*
 410  * bounce event - stored as variable size data
 411  */
 412 struct snd_seq_event_bounce {
 413         int err;
 414         struct snd_seq_event event;
 415         /* external data follows here. */
 416 };
 417
 418 #ifdef __KERNEL__
 419
 420 /* helper macro */
 421 #define snd_seq_event_bounce_ext_data(ev) ((void*)((char *)(ev)->data.ext.ptr + sizeof(struct snd_seq_event_bounce)))
 422
 423 /*
 424  * type check macros
 425  */
 426 /* result events: 0-4 */
 427 #define snd_seq_ev_is_result_type(ev)   ((ev)->type < 5)
 428 /* channel specific events: 5-19 */
 429 #define snd_seq_ev_is_channel_type(ev)  ((ev)->type >= 5 && (ev)->type < 20)
 430 /* note events: 5-9 */
 431 #define snd_seq_ev_is_note_type(ev)     ((ev)->type >= 5 && (ev)->type < 10)
 432 /* control events: 10-19 */
 433 #define snd_seq_ev_is_control_type(ev)  ((ev)->type >= 10 && (ev)->type < 20)
 434 /* queue control events: 30-39 */
 435 #define snd_seq_ev_is_queue_type(ev)    ((ev)->type >= 30 && (ev)->type < 40)
 436 /* system status messages */
 437 #define snd_seq_ev_is_message_type(ev)  ((ev)->type >= 60 && (ev)->type < 69)
 438 /* sample messages */
 439 #define snd_seq_ev_is_sample_type(ev)   ((ev)->type >= 70 && (ev)->type < 79)
 440 /* user-defined messages */
 441 #define snd_seq_ev_is_user_type(ev)     ((ev)->type >= 90 && (ev)->type < 99)
 442 /* fixed length events: 0-99 */
 443 #define snd_seq_ev_is_fixed_type(ev)    ((ev)->type < 100)
 444 /* instrument layer events: 100-129 */
 445 #define snd_seq_ev_is_instr_type(ev)    ((ev)->type >= 100 && (ev)->type < 130)
 446 /* variable length events: 130-139 */
 447 #define snd_seq_ev_is_variable_type(ev) ((ev)->type >= 130 && (ev)->type < 140)
 448 /* reserved for kernel */
 449 #define snd_seq_ev_is_reserved(ev)      ((ev)->type >= 150)
 450
 451 /* direct dispatched events */
 452 #define snd_seq_ev_is_direct(ev)        ((ev)->queue == SNDRV_SEQ_QUEUE_DIRECT)
 453
 454 /*
 455  * macros to check event flags
 456  */
 457 /* prior events */
 458 #define snd_seq_ev_is_prior(ev)         (((ev)->flags & SNDRV_SEQ_PRIORITY_MASK) == SNDRV_SEQ_PRIORITY_HIGH)
 459
 460 /* event length type */
 461 #define snd_seq_ev_length_type(ev)      ((ev)->flags & SNDRV_SEQ_EVENT_LENGTH_MASK)
 462 #define snd_seq_ev_is_fixed(ev)         (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_FIXED)
 463 #define snd_seq_ev_is_variable(ev)      (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
 464 #define snd_seq_ev_is_varusr(ev)        (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARUSR)
 465
 466 /* time-stamp type */
 467 #define snd_seq_ev_timestamp_type(ev)   ((ev)->flags & SNDRV_SEQ_TIME_STAMP_MASK)
 468 #define snd_seq_ev_is_tick(ev)          (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_TICK)
 469 #define snd_seq_ev_is_real(ev)          (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_REAL)
 470
 471 /* time-mode type */
 472 #define snd_seq_ev_timemode_type(ev)    ((ev)->flags & SNDRV_SEQ_TIME_MODE_MASK)
 473 #define snd_seq_ev_is_abstime(ev)       (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_ABS)
 474 #define snd_seq_ev_is_reltime(ev)       (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_REL)
 475
 476 /* queue sync port */
 477 #define snd_seq_queue_sync_port(q)      ((q) + 16)
 478
 479 #endif /* __KERNEL__ */
 480
 481         /* system information */
 482 struct snd_seq_system_info {
 483         int queues;                     /* maximum queues count */
 484         int clients;                    /* maximum clients count */
 485         int ports;                      /* maximum ports per client */
 486         int channels;                   /* maximum channels per port */
 487         int cur_clients;                /* current clients */
 488         int cur_queues;                 /* current queues */
 489         char reserved[24];
 490 };
 491
 492
 493         /* system running information */
 494 struct snd_seq_running_info {
 495         unsigned char client;           /* client id */
 496         unsigned char big_endian;       /* 1 = big-endian */
 497         unsigned char cpu_mode;         /* 4 = 32bit, 8 = 64bit */
 498         unsigned char pad;              /* reserved */
 499         unsigned char reserved[12];
 500 };
 501
 502
 503         /* known client numbers */
 504 #define SNDRV_SEQ_CLIENT_SYSTEM         0
 505         /* internal client numbers */
 506 #define SNDRV_SEQ_CLIENT_DUMMY          14      /* midi through */
 507 #define SNDRV_SEQ_CLIENT_OSS            15      /* oss sequencer emulator */
 508
 509
 510         /* client types */
 511 typedef int __bitwise snd_seq_client_type_t;
 512 #define NO_CLIENT       ((__force snd_seq_client_type_t) 0)
 513 #define USER_CLIENT     ((__force snd_seq_client_type_t) 1)
 514 #define KERNEL_CLIENT   ((__force snd_seq_client_type_t) 2)
 515
 516         /* event filter flags */
 517 #define SNDRV_SEQ_FILTER_BROADCAST      (1<<0)  /* accept broadcast messages */
 518 #define SNDRV_SEQ_FILTER_MULTICAST      (1<<1)  /* accept multicast messages */
 519 #define SNDRV_SEQ_FILTER_BOUNCE         (1<<2)  /* accept bounce event in error */
 520 #define SNDRV_SEQ_FILTER_USE_EVENT      (1<<31) /* use event filter */
 521
 522 struct snd_seq_client_info {
 523         int client;                     /* client number to inquire */
 524         snd_seq_client_type_t type;     /* client type */
 525         char name[64];                  /* client name */
 526         unsigned int filter;            /* filter flags */
 527         unsigned char multicast_filter[8]; /* multicast filter bitmap */
 528         unsigned char event_filter[32]; /* event filter bitmap */
 529         int num_ports;                  /* RO: number of ports */
 530         int event_lost;                 /* number of lost events */
 531         char reserved[64];              /* for future use */
 532 };
 533
 534
 535 /* client pool size */
 536 struct snd_seq_client_pool {
 537         int client;                     /* client number to inquire */
 538         int output_pool;                /* outgoing (write) pool size */
 539         int input_pool;                 /* incoming (read) pool size */
 540         int output_room;                /* minimum free pool size for select/blocking mode */
 541         int output_free;                /* unused size */
 542         int input_free;                 /* unused size */
 543         char reserved[64];
 544 };
 545
 546
 547 /* Remove events by specified criteria */
 548
 549 #define SNDRV_SEQ_REMOVE_INPUT          (1<<0)  /* Flush input queues */
 550 #define SNDRV_SEQ_REMOVE_OUTPUT         (1<<1)  /* Flush output queues */
 551 #define SNDRV_SEQ_REMOVE_DEST           (1<<2)  /* Restrict by destination q:client:port */
 552 #define SNDRV_SEQ_REMOVE_DEST_CHANNEL   (1<<3)  /* Restrict by channel */
 553 #define SNDRV_SEQ_REMOVE_TIME_BEFORE    (1<<4)  /* Restrict to before time */
 554 #define SNDRV_SEQ_REMOVE_TIME_AFTER     (1<<5)  /* Restrict to time or after */
 555 #define SNDRV_SEQ_REMOVE_TIME_TICK      (1<<6)  /* Time is in ticks */
 556 #define SNDRV_SEQ_REMOVE_EVENT_TYPE     (1<<7)  /* Restrict to event type */
 557 #define SNDRV_SEQ_REMOVE_IGNORE_OFF     (1<<8)  /* Do not flush off events */
 558 #define SNDRV_SEQ_REMOVE_TAG_MATCH      (1<<9)  /* Restrict to events with given tag */
 559
 560 struct snd_seq_remove_events {
 561         unsigned int  remove_mode;      /* Flags that determine what gets removed */
 562
 563         union snd_seq_timestamp time;
 564
 565         unsigned char queue;    /* Queue for REMOVE_DEST */
 566         struct snd_seq_addr dest;       /* Address for REMOVE_DEST */
 567         unsigned char channel;  /* Channel for REMOVE_DEST */
 568
 569         int  type;      /* For REMOVE_EVENT_TYPE */
 570         char  tag;      /* Tag for REMOVE_TAG */
 571
 572         int  reserved[10];      /* To allow for future binary compatibility */
 573
 574 };
 575
 576
 577         /* known port numbers */
 578 #define SNDRV_SEQ_PORT_SYSTEM_TIMER     0
 579 #define SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE  1
 580
 581         /* port capabilities (32 bits) */
 582 #define SNDRV_SEQ_PORT_CAP_READ         (1<<0)  /* readable from this port */
 583 #define SNDRV_SEQ_PORT_CAP_WRITE        (1<<1)  /* writable to this port */
 584
 585 #define SNDRV_SEQ_PORT_CAP_SYNC_READ    (1<<2)
 586 #define SNDRV_SEQ_PORT_CAP_SYNC_WRITE   (1<<3)
 587
 588 #define SNDRV_SEQ_PORT_CAP_DUPLEX       (1<<4)
 589
 590 #define SNDRV_SEQ_PORT_CAP_SUBS_READ    (1<<5)  /* allow read subscription */
 591 #define SNDRV_SEQ_PORT_CAP_SUBS_WRITE   (1<<6)  /* allow write subscription */
 592 #define SNDRV_SEQ_PORT_CAP_NO_EXPORT    (1<<7)  /* routing not allowed */
 593
 594         /* port type */
 595 #define SNDRV_SEQ_PORT_TYPE_SPECIFIC    (1<<0)  /* hardware specific */
 596 #define SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC (1<<1) /* generic MIDI device */
 597 #define SNDRV_SEQ_PORT_TYPE_MIDI_GM     (1<<2)  /* General MIDI compatible device */
 598 #define SNDRV_SEQ_PORT_TYPE_MIDI_GS     (1<<3)  /* GS compatible device */
 599 #define SNDRV_SEQ_PORT_TYPE_MIDI_XG     (1<<4)  /* XG compatible device */
 600 #define SNDRV_SEQ_PORT_TYPE_MIDI_MT32   (1<<5)  /* MT-32 compatible device */
 601 #define SNDRV_SEQ_PORT_TYPE_MIDI_GM2    (1<<6)  /* General MIDI 2 compatible device */
 602
 603 /* other standards...*/
 604 #define SNDRV_SEQ_PORT_TYPE_SYNTH       (1<<10) /* Synth device (no MIDI compatible - direct wavetable) */
 605 #define SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE (1<<11)       /* Sampling device (support sample download) */
 606 #define SNDRV_SEQ_PORT_TYPE_SAMPLE      (1<<12) /* Sampling device (sample can be downloaded at any time) */
 607 /*...*/
 608 #define SNDRV_SEQ_PORT_TYPE_HARDWARE    (1<<16) /* driver for a hardware device */
 609 #define SNDRV_SEQ_PORT_TYPE_SOFTWARE    (1<<17) /* implemented in software */
 610 #define SNDRV_SEQ_PORT_TYPE_SYNTHESIZER (1<<18) /* generates sound */
 611 #define SNDRV_SEQ_PORT_TYPE_PORT        (1<<19) /* connects to other device(s) */
 612 #define SNDRV_SEQ_PORT_TYPE_APPLICATION (1<<20) /* application (sequencer/editor) */
 613
 614 /* misc. conditioning flags */
 615 #define SNDRV_SEQ_PORT_FLG_GIVEN_PORT   (1<<0)
 616 #define SNDRV_SEQ_PORT_FLG_TIMESTAMP    (1<<1)
 617 #define SNDRV_SEQ_PORT_FLG_TIME_REAL    (1<<2)
 618
 619 struct snd_seq_port_info {
 620         struct snd_seq_addr addr;       /* client/port numbers */
 621         char name[64];                  /* port name */
 622
 623         unsigned int capability;        /* port capability bits */
 624         unsigned int type;              /* port type bits */
 625         int midi_channels;              /* channels per MIDI port */
 626         int midi_voices;                /* voices per MIDI port */
 627         int synth_voices;               /* voices per SYNTH port */
 628
 629         int read_use;                   /* R/O: subscribers for output (from this port) */
 630         int write_use;                  /* R/O: subscribers for input (to this port) */
 631
 632         void *kernel;                   /* reserved for kernel use (must be NULL) */
 633         unsigned int flags;             /* misc. conditioning */
 634         unsigned char time_queue;       /* queue # for timestamping */
 635         char reserved[59];              /* for future use */
 636 };
 637
 638
 639 /* queue flags */
 640 #define SNDRV_SEQ_QUEUE_FLG_SYNC        (1<<0)  /* sync enabled */
 641
 642 /* queue information */
 643 struct snd_seq_queue_info {
 644         int queue;              /* queue id */
 645
 646         /*
 647          *  security settings, only owner of this queue can start/stop timer
 648          *  etc. if the queue is locked for other clients
 649          */
 650         int owner;              /* client id for owner of the queue */
 651         unsigned locked:1;      /* timing queue locked for other queues */
 652         char name[64];          /* name of this queue */
 653         unsigned int flags;     /* flags */
 654         char reserved[60];      /* for future use */
 655
 656 };
 657
 658 /* queue info/status */
 659 struct snd_seq_queue_status {
 660         int queue;                      /* queue id */
 661         int events;                     /* read-only - queue size */
 662         snd_seq_tick_time_t tick;       /* current tick */
 663         struct snd_seq_real_time time;  /* current time */
 664         int running;                    /* running state of queue */
 665         int flags;                      /* various flags */
 666         char reserved[64];              /* for the future */
 667 };
 668
 669
 670 /* queue tempo */
 671 struct snd_seq_queue_tempo {
 672         int queue;                      /* sequencer queue */
 673         unsigned int tempo;             /* current tempo, us/tick */
 674         int ppq;                        /* time resolution, ticks/quarter */
 675         unsigned int skew_value;        /* queue skew */
 676         unsigned int skew_base;         /* queue skew base */
 677         char reserved[24];              /* for the future */
 678 };
 679
 680
 681 /* sequencer timer sources */
 682 #define SNDRV_SEQ_TIMER_ALSA            0       /* ALSA timer */
 683 #define SNDRV_SEQ_TIMER_MIDI_CLOCK      1       /* Midi Clock (CLOCK event) */
 684 #define SNDRV_SEQ_TIMER_MIDI_TICK       2       /* Midi Timer Tick (TICK event) */
 685
 686 /* queue timer info */
 687 struct snd_seq_queue_timer {
 688         int queue;                      /* sequencer queue */
 689         int type;                       /* source timer type */
 690         union {
 691                 struct {
 692                         struct snd_timer_id id; /* ALSA's timer ID */
 693                         unsigned int resolution;        /* resolution in Hz */
 694                 } alsa;
 695         } u;
 696         char reserved[64];              /* for the future use */
 697 };
 698
 699
 700 struct snd_seq_queue_client {
 701         int queue;              /* sequencer queue */
 702         int client;             /* sequencer client */
 703         int used;               /* queue is used with this client
 704                                    (must be set for accepting events) */
 705         /* per client watermarks */
 706         char reserved[64];      /* for future use */
 707 };
 708
 709
 710 #define SNDRV_SEQ_PORT_SUBS_EXCLUSIVE   (1<<0)  /* exclusive connection */
 711 #define SNDRV_SEQ_PORT_SUBS_TIMESTAMP   (1<<1)
 712 #define SNDRV_SEQ_PORT_SUBS_TIME_REAL   (1<<2)
 713
 714 struct snd_seq_port_subscribe {
 715         struct snd_seq_addr sender;     /* sender address */
 716         struct snd_seq_addr dest;       /* destination address */
 717         unsigned int voices;            /* number of voices to be allocated (0 = don't care) */
 718         unsigned int flags;             /* modes */
 719         unsigned char queue;            /* input time-stamp queue (optional) */
 720         unsigned char pad[3];           /* reserved */
 721         char reserved[64];
 722 };
 723
 724 /* type of query subscription */
 725 #define SNDRV_SEQ_QUERY_SUBS_READ       0
 726 #define SNDRV_SEQ_QUERY_SUBS_WRITE      1
 727
 728 struct snd_seq_query_subs {
 729         struct snd_seq_addr root;       /* client/port id to be searched */
 730         int type;               /* READ or WRITE */
 731         int index;              /* 0..N-1 */
 732         int num_subs;           /* R/O: number of subscriptions on this port */
 733         struct snd_seq_addr addr;       /* R/O: result */
 734         unsigned char queue;    /* R/O: result */
 735         unsigned int flags;     /* R/O: result */
 736         char reserved[64];      /* for future use */
 737 };
 738
 739
 740 /*
 741  *  Instrument abstraction layer
 742  *     - based on events
 743  */
 744
 745 /* instrument types */
 746 #define SNDRV_SEQ_INSTR_ATYPE_DATA      0       /* instrument data */
 747 #define SNDRV_SEQ_INSTR_ATYPE_ALIAS     1       /* instrument alias */
 748
 749 /* instrument ASCII identifiers */
 750 #define SNDRV_SEQ_INSTR_ID_DLS1         "DLS1"
 751 #define SNDRV_SEQ_INSTR_ID_DLS2         "DLS2"
 752 #define SNDRV_SEQ_INSTR_ID_SIMPLE       "Simple Wave"
 753 #define SNDRV_SEQ_INSTR_ID_SOUNDFONT    "SoundFont"
 754 #define SNDRV_SEQ_INSTR_ID_GUS_PATCH    "GUS Patch"
 755 #define SNDRV_SEQ_INSTR_ID_INTERWAVE    "InterWave FFFF"
 756 #define SNDRV_SEQ_INSTR_ID_OPL2_3       "OPL2/3 FM"
 757 #define SNDRV_SEQ_INSTR_ID_OPL4         "OPL4"
 758
 759 /* instrument types */
 760 #define SNDRV_SEQ_INSTR_TYPE0_DLS1      (1<<0)  /* MIDI DLS v1 */
 761 #define SNDRV_SEQ_INSTR_TYPE0_DLS2      (1<<1)  /* MIDI DLS v2 */
 762 #define SNDRV_SEQ_INSTR_TYPE1_SIMPLE    (1<<0)  /* Simple Wave */
 763 #define SNDRV_SEQ_INSTR_TYPE1_SOUNDFONT (1<<1)  /* EMU SoundFont */
 764 #define SNDRV_SEQ_INSTR_TYPE1_GUS_PATCH (1<<2)  /* Gravis UltraSound Patch */
 765 #define SNDRV_SEQ_INSTR_TYPE1_INTERWAVE (1<<3)  /* InterWave FFFF */
 766 #define SNDRV_SEQ_INSTR_TYPE2_OPL2_3    (1<<0)  /* Yamaha OPL2/3 FM */
 767 #define SNDRV_SEQ_INSTR_TYPE2_OPL4      (1<<1)  /* Yamaha OPL4 */
 768
 769 /* put commands */
 770 #define SNDRV_SEQ_INSTR_PUT_CMD_CREATE  0
 771 #define SNDRV_SEQ_INSTR_PUT_CMD_REPLACE 1
 772 #define SNDRV_SEQ_INSTR_PUT_CMD_MODIFY  2
 773 #define SNDRV_SEQ_INSTR_PUT_CMD_ADD     3
 774 #define SNDRV_SEQ_INSTR_PUT_CMD_REMOVE  4
 775
 776 /* get commands */
 777 #define SNDRV_SEQ_INSTR_GET_CMD_FULL    0
 778 #define SNDRV_SEQ_INSTR_GET_CMD_PARTIAL 1
 779
 780 /* query flags */
 781 #define SNDRV_SEQ_INSTR_QUERY_FOLLOW_ALIAS (1<<0)
 782
 783 /* free commands */
 784 #define SNDRV_SEQ_INSTR_FREE_CMD_ALL            0
 785 #define SNDRV_SEQ_INSTR_FREE_CMD_PRIVATE        1
 786 #define SNDRV_SEQ_INSTR_FREE_CMD_CLUSTER        2
 787 #define SNDRV_SEQ_INSTR_FREE_CMD_SINGLE         3
 788
 789 /* size of ROM/RAM */
 790 typedef unsigned int snd_seq_instr_size_t;
 791
 792 /* INSTR_INFO */
 793
 794 struct snd_seq_instr_info {
 795         int result;                     /* operation result */
 796         unsigned int formats[8];        /* bitmap of supported formats */
 797         int ram_count;                  /* count of RAM banks */
 798         snd_seq_instr_size_t ram_sizes[16]; /* size of RAM banks */
 799         int rom_count;                  /* count of ROM banks */
 800         snd_seq_instr_size_t rom_sizes[8]; /* size of ROM banks */
 801         char reserved[128];
 802 };
 803
 804 /* INSTR_STATUS */
 805
 806 struct snd_seq_instr_status {
 807         int result;                     /* operation result */
 808         snd_seq_instr_size_t free_ram[16]; /* free RAM in banks */
 809         int instrument_count;           /* count of downloaded instruments */
 810         char reserved[128];
 811 };
 812
 813 /* INSTR_FORMAT_INFO */
 814
 815 struct snd_seq_instr_format_info {
 816         char format[16];                /* format identifier - SNDRV_SEQ_INSTR_ID_* */
 817         unsigned int len;               /* max data length (without this structure) */
 818 };
 819
 820 struct snd_seq_instr_format_info_result {
 821         int result;                     /* operation result */
 822         char format[16];                /* format identifier */
 823         unsigned int len;               /* filled data length (without this structure) */
 824 };
 825
 826 /* instrument data */
 827 struct snd_seq_instr_data {
 828         char name[32];                  /* instrument name */
 829         char reserved[16];              /* for the future use */
 830         int type;                       /* instrument type */
 831         union {
 832                 char format[16];        /* format identifier */
 833                 struct snd_seq_instr alias;
 834         } data;
 835 };
 836
 837 /* INSTR_PUT/GET, data are stored in one block (extended), header + data */
 838
 839 struct snd_seq_instr_header {
 840         union {
 841                 struct snd_seq_instr instr;
 842                 snd_seq_instr_cluster_t cluster;
 843         } id;                           /* instrument identifier */
 844         unsigned int cmd;               /* get/put/free command */
 845         unsigned int flags;             /* query flags (only for get) */
 846         unsigned int len;               /* real instrument data length (without header) */
 847         int result;                     /* operation result */
 848         char reserved[16];              /* for the future */
 849         struct snd_seq_instr_data data; /* instrument data (for put/get result) */
 850 };
 851
 852 /* INSTR_CLUSTER_SET */
 853
 854 struct snd_seq_instr_cluster_set {
 855         snd_seq_instr_cluster_t cluster; /* cluster identifier */
 856         char name[32];                  /* cluster name */
 857         int priority;                   /* cluster priority */
 858         char reserved[64];              /* for the future use */
 859 };
 860
 861 /* INSTR_CLUSTER_GET */
 862
 863 struct snd_seq_instr_cluster_get {
 864         snd_seq_instr_cluster_t cluster; /* cluster identifier */
 865         char name[32];                  /* cluster name */
 866         int priority;                   /* cluster priority */
 867         char reserved[64];              /* for the future use */
 868 };
 869
 870 /*
 871  *  IOCTL commands
 872  */
 873
 874 #define SNDRV_SEQ_IOCTL_PVERSION        _IOR ('S', 0x00, int)
 875 #define SNDRV_SEQ_IOCTL_CLIENT_ID       _IOR ('S', 0x01, int)
 876 #define SNDRV_SEQ_IOCTL_SYSTEM_INFO     _IOWR('S', 0x02, struct snd_seq_system_info)
 877 #define SNDRV_SEQ_IOCTL_RUNNING_MODE    _IOWR('S', 0x03, struct snd_seq_running_info)
 878
 879 #define SNDRV_SEQ_IOCTL_GET_CLIENT_INFO _IOWR('S', 0x10, struct snd_seq_client_info)
 880 #define SNDRV_SEQ_IOCTL_SET_CLIENT_INFO _IOW ('S', 0x11, struct snd_seq_client_info)
 881
 882 #define SNDRV_SEQ_IOCTL_CREATE_PORT     _IOWR('S', 0x20, struct snd_seq_port_info)
 883 #define SNDRV_SEQ_IOCTL_DELETE_PORT     _IOW ('S', 0x21, struct snd_seq_port_info)
 884 #define SNDRV_SEQ_IOCTL_GET_PORT_INFO   _IOWR('S', 0x22, struct snd_seq_port_info)
 885 #define SNDRV_SEQ_IOCTL_SET_PORT_INFO   _IOW ('S', 0x23, struct snd_seq_port_info)
 886
 887 #define SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT  _IOW ('S', 0x30, struct snd_seq_port_subscribe)
 888 #define SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT _IOW ('S', 0x31, struct snd_seq_port_subscribe)
 889
 890 #define SNDRV_SEQ_IOCTL_CREATE_QUEUE    _IOWR('S', 0x32, struct snd_seq_queue_info)
 891 #define SNDRV_SEQ_IOCTL_DELETE_QUEUE    _IOW ('S', 0x33, struct snd_seq_queue_info)
 892 #define SNDRV_SEQ_IOCTL_GET_QUEUE_INFO  _IOWR('S', 0x34, struct snd_seq_queue_info)
 893 #define SNDRV_SEQ_IOCTL_SET_QUEUE_INFO  _IOWR('S', 0x35, struct snd_seq_queue_info)
 894 #define SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE _IOWR('S', 0x36, struct snd_seq_queue_info)
 895 #define SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS _IOWR('S', 0x40, struct snd_seq_queue_status)
 896 #define SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO _IOWR('S', 0x41, struct snd_seq_queue_tempo)
 897 #define SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO _IOW ('S', 0x42, struct snd_seq_queue_tempo)
 898 #define SNDRV_SEQ_IOCTL_GET_QUEUE_OWNER _IOWR('S', 0x43, struct snd_seq_queue_owner)
 899 #define SNDRV_SEQ_IOCTL_SET_QUEUE_OWNER _IOW ('S', 0x44, struct snd_seq_queue_owner)
 900 #define SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER _IOWR('S', 0x45, struct snd_seq_queue_timer)
 901 #define SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER _IOW ('S', 0x46, struct snd_seq_queue_timer)
 902 /* XXX
 903 #define SNDRV_SEQ_IOCTL_GET_QUEUE_SYNC  _IOWR('S', 0x53, struct snd_seq_queue_sync)
 904 #define SNDRV_SEQ_IOCTL_SET_QUEUE_SYNC  _IOW ('S', 0x54, struct snd_seq_queue_sync)
 905 */
 906 #define SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT        _IOWR('S', 0x49, struct snd_seq_queue_client)
 907 #define SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT        _IOW ('S', 0x4a, struct snd_seq_queue_client)
 908 #define SNDRV_SEQ_IOCTL_GET_CLIENT_POOL _IOWR('S', 0x4b, struct snd_seq_client_pool)
 909 #define SNDRV_SEQ_IOCTL_SET_CLIENT_POOL _IOW ('S', 0x4c, struct snd_seq_client_pool)
 910 #define SNDRV_SEQ_IOCTL_REMOVE_EVENTS   _IOW ('S', 0x4e, struct snd_seq_remove_events)
 911 #define SNDRV_SEQ_IOCTL_QUERY_SUBS      _IOWR('S', 0x4f, struct snd_seq_query_subs)
 912 #define SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION        _IOWR('S', 0x50, struct snd_seq_port_subscribe)
 913 #define SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT       _IOWR('S', 0x51, struct snd_seq_client_info)
 914 #define SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT _IOWR('S', 0x52, struct snd_seq_port_info)
 915
 916 #endif /* __SOUND_ASEQUENCER_H */