LXR linux/include/uapi/sound/asequencer.h

   1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   2/*
   3 *  Main header file for the ALSA sequencer
   4 *  Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
   5 *            (c) 1998-1999 by Jaroslav Kysela <perex@perex.cz>
   6 *
   7 *
   8 *   This program is free software; you can redistribute it and/or modify
   9 *   it under the terms of the GNU General Public License as published by
  10 *   the Free Software Foundation; either version 2 of the License, or
  11 *   (at your option) any later version.
  12 *
  13 *   This program is distributed in the hope that it will be useful,
  14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 *   GNU General Public License for more details.
  17 *
  18 *   You should have received a copy of the GNU General Public License
  19 *   along with this program; if not, write to the Free Software
  20 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21 *
  22 */
  23#ifndef _UAPI__SOUND_ASEQUENCER_H
  24#define _UAPI__SOUND_ASEQUENCER_H
  25
  26#include <sound/asound.h>
  27
  28/** version of the sequencer */
  29#define SNDRV_SEQ_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 2)
  30
  31/**
  32 * definition of sequencer event types
  33 */
  34
  35/** system messages
  36 * event data type = #snd_seq_result
  37 */
  38#define SNDRV_SEQ_EVENT_SYSTEM          0
  39#define SNDRV_SEQ_EVENT_RESULT          1
  40
  41/** note messages (channel specific)
  42 * event data type = #snd_seq_ev_note
  43 */
  44#define SNDRV_SEQ_EVENT_NOTE            5
  45#define SNDRV_SEQ_EVENT_NOTEON          6
  46#define SNDRV_SEQ_EVENT_NOTEOFF         7
  47#define SNDRV_SEQ_EVENT_KEYPRESS        8
  48        
  49/** control messages (channel specific)
  50 * event data type = #snd_seq_ev_ctrl
  51 */
  52#define SNDRV_SEQ_EVENT_CONTROLLER      10
  53#define SNDRV_SEQ_EVENT_PGMCHANGE       11
  54#define SNDRV_SEQ_EVENT_CHANPRESS       12
  55#define SNDRV_SEQ_EVENT_PITCHBEND       13      /**< from -8192 to 8191 */
  56#define SNDRV_SEQ_EVENT_CONTROL14       14      /**< 14 bit controller value */
  57#define SNDRV_SEQ_EVENT_NONREGPARAM     15      /**< 14 bit NRPN address + 14 bit unsigned value */
  58#define SNDRV_SEQ_EVENT_REGPARAM        16      /**< 14 bit RPN address + 14 bit unsigned value */
  59
  60/** synchronisation messages
  61 * event data type = #snd_seq_ev_ctrl
  62 */
  63#define SNDRV_SEQ_EVENT_SONGPOS         20      /* Song Position Pointer with LSB and MSB values */
  64#define SNDRV_SEQ_EVENT_SONGSEL         21      /* Song Select with song ID number */
  65#define SNDRV_SEQ_EVENT_QFRAME          22      /* midi time code quarter frame */
  66#define SNDRV_SEQ_EVENT_TIMESIGN        23      /* SMF Time Signature event */
  67#define SNDRV_SEQ_EVENT_KEYSIGN         24      /* SMF Key Signature event */
  68                
  69/** timer messages
  70 * event data type = snd_seq_ev_queue_control
  71 */
  72#define SNDRV_SEQ_EVENT_START           30      /* midi Real Time Start message */
  73#define SNDRV_SEQ_EVENT_CONTINUE        31      /* midi Real Time Continue message */
  74#define SNDRV_SEQ_EVENT_STOP            32      /* midi Real Time Stop message */       
  75#define SNDRV_SEQ_EVENT_SETPOS_TICK     33      /* set tick queue position */
  76#define SNDRV_SEQ_EVENT_SETPOS_TIME     34      /* set realtime queue position */
  77#define SNDRV_SEQ_EVENT_TEMPO           35      /* (SMF) Tempo event */
  78#define SNDRV_SEQ_EVENT_CLOCK           36      /* midi Real Time Clock message */
  79#define SNDRV_SEQ_EVENT_TICK            37      /* midi Real Time Tick message */
  80#define SNDRV_SEQ_EVENT_QUEUE_SKEW      38      /* skew queue tempo */
  81
  82/** others
  83 * event data type = none
  84 */
  85#define SNDRV_SEQ_EVENT_TUNE_REQUEST    40      /* tune request */
  86#define SNDRV_SEQ_EVENT_RESET           41      /* reset to power-on state */
  87#define SNDRV_SEQ_EVENT_SENSING         42      /* "active sensing" event */
  88
  89/** echo back, kernel private messages
  90 * event data type = any type
  91 */
  92#define SNDRV_SEQ_EVENT_ECHO            50      /* echo event */
  93#define SNDRV_SEQ_EVENT_OSS             51      /* OSS raw event */
  94
  95/** system status messages (broadcast for subscribers)
  96 * event data type = snd_seq_addr
  97 */
  98#define SNDRV_SEQ_EVENT_CLIENT_START    60      /* new client has connected */
  99#define SNDRV_SEQ_EVENT_CLIENT_EXIT     61      /* client has left the system */
 100#define SNDRV_SEQ_EVENT_CLIENT_CHANGE   62      /* client status/info has changed */
 101#define SNDRV_SEQ_EVENT_PORT_START      63      /* new port was created */
 102#define SNDRV_SEQ_EVENT_PORT_EXIT       64      /* port was deleted from system */
 103#define SNDRV_SEQ_EVENT_PORT_CHANGE     65      /* port status/info has changed */
 104
 105/** port connection changes
 106 * event data type = snd_seq_connect
 107 */
 108#define SNDRV_SEQ_EVENT_PORT_SUBSCRIBED 66      /* ports connected */
 109#define SNDRV_SEQ_EVENT_PORT_UNSUBSCRIBED 67    /* ports disconnected */
 110
 111/* 70-89:  synthesizer events - obsoleted */
 112
 113/** user-defined events with fixed length
 114 * event data type = any
 115 */
 116#define SNDRV_SEQ_EVENT_USR0            90
 117#define SNDRV_SEQ_EVENT_USR1            91
 118#define SNDRV_SEQ_EVENT_USR2            92
 119#define SNDRV_SEQ_EVENT_USR3            93
 120#define SNDRV_SEQ_EVENT_USR4            94
 121#define SNDRV_SEQ_EVENT_USR5            95
 122#define SNDRV_SEQ_EVENT_USR6            96
 123#define SNDRV_SEQ_EVENT_USR7            97
 124#define SNDRV_SEQ_EVENT_USR8            98
 125#define SNDRV_SEQ_EVENT_USR9            99
 126
 127/* 100-118: instrument layer - obsoleted */
 128/* 119-129: reserved */
 129
 130/* 130-139: variable length events
 131 * event data type = snd_seq_ev_ext
 132 * (SNDRV_SEQ_EVENT_LENGTH_VARIABLE must be set)
 133 */
 134#define SNDRV_SEQ_EVENT_SYSEX           130     /* system exclusive data (variable length) */
 135#define SNDRV_SEQ_EVENT_BOUNCE          131     /* error event */
 136/* 132-134: reserved */
 137#define SNDRV_SEQ_EVENT_USR_VAR0        135
 138#define SNDRV_SEQ_EVENT_USR_VAR1        136
 139#define SNDRV_SEQ_EVENT_USR_VAR2        137
 140#define SNDRV_SEQ_EVENT_USR_VAR3        138
 141#define SNDRV_SEQ_EVENT_USR_VAR4        139
 142
 143/* 150-151: kernel events with quote - DO NOT use in user clients */
 144#define SNDRV_SEQ_EVENT_KERNEL_ERROR    150
 145#define SNDRV_SEQ_EVENT_KERNEL_QUOTE    151     /* obsolete */
 146
 147/* 152-191: reserved */
 148
 149/* 192-254: hardware specific events */
 150
 151/* 255: special event */
 152#define SNDRV_SEQ_EVENT_NONE            255
 153
 154
 155typedef unsigned char snd_seq_event_type_t;
 156
 157/** event address */
 158struct snd_seq_addr {
 159        unsigned char client;   /**< Client number:         0..255, 255 = broadcast to all clients */
 160        unsigned char port;     /**< Port within client:    0..255, 255 = broadcast to all ports */
 161};
 162
 163/** port connection */
 164struct snd_seq_connect {
 165        struct snd_seq_addr sender;
 166        struct snd_seq_addr dest;
 167};
 168
 169
 170#define SNDRV_SEQ_ADDRESS_UNKNOWN       253     /* unknown source */
 171#define SNDRV_SEQ_ADDRESS_SUBSCRIBERS   254     /* send event to all subscribed ports */
 172#define SNDRV_SEQ_ADDRESS_BROADCAST     255     /* send event to all queues/clients/ports/channels */
 173#define SNDRV_SEQ_QUEUE_DIRECT          253     /* direct dispatch */
 174
 175        /* event mode flag - NOTE: only 8 bits available! */
 176#define SNDRV_SEQ_TIME_STAMP_TICK       (0<<0) /* timestamp in clock ticks */
 177#define SNDRV_SEQ_TIME_STAMP_REAL       (1<<0) /* timestamp in real time */
 178#define SNDRV_SEQ_TIME_STAMP_MASK       (1<<0)
 179
 180#define SNDRV_SEQ_TIME_MODE_ABS         (0<<1)  /* absolute timestamp */
 181#define SNDRV_SEQ_TIME_MODE_REL         (1<<1)  /* relative to current time */
 182#define SNDRV_SEQ_TIME_MODE_MASK        (1<<1)
 183
 184#define SNDRV_SEQ_EVENT_LENGTH_FIXED    (0<<2)  /* fixed event size */
 185#define SNDRV_SEQ_EVENT_LENGTH_VARIABLE (1<<2)  /* variable event size */
 186#define SNDRV_SEQ_EVENT_LENGTH_VARUSR   (2<<2)  /* variable event size - user memory space */
 187#define SNDRV_SEQ_EVENT_LENGTH_MASK     (3<<2)
 188
 189#define SNDRV_SEQ_PRIORITY_NORMAL       (0<<4)  /* normal priority */
 190#define SNDRV_SEQ_PRIORITY_HIGH         (1<<4)  /* event should be processed before others */
 191#define SNDRV_SEQ_PRIORITY_MASK         (1<<4)
 192
 193
 194        /* note event */
 195struct snd_seq_ev_note {
 196        unsigned char channel;
 197        unsigned char note;
 198        unsigned char velocity;
 199        unsigned char off_velocity;     /* only for SNDRV_SEQ_EVENT_NOTE */
 200        unsigned int duration;          /* only for SNDRV_SEQ_EVENT_NOTE */
 201};
 202
 203        /* controller event */
 204struct snd_seq_ev_ctrl {
 205        unsigned char channel;
 206        unsigned char unused1, unused2, unused3;        /* pad */
 207        unsigned int param;
 208        signed int value;
 209};
 210
 211        /* generic set of bytes (12x8 bit) */
 212struct snd_seq_ev_raw8 {
 213        unsigned char d[12];    /* 8 bit value */
 214};
 215
 216        /* generic set of integers (3x32 bit) */
 217struct snd_seq_ev_raw32 {
 218        unsigned int d[3];      /* 32 bit value */
 219};
 220
 221        /* external stored data */
 222struct snd_seq_ev_ext {
 223        unsigned int len;       /* length of data */
 224        void *ptr;              /* pointer to data (note: maybe 64-bit) */
 225} __attribute__((packed));
 226
 227struct snd_seq_result {
 228        int event;              /* processed event type */
 229        int result;
 230};
 231
 232
 233struct snd_seq_real_time {
 234        unsigned int tv_sec;    /* seconds */
 235        unsigned int tv_nsec;   /* nanoseconds */
 236};
 237
 238typedef unsigned int snd_seq_tick_time_t;       /* midi ticks */
 239
 240union snd_seq_timestamp {
 241        snd_seq_tick_time_t tick;
 242        struct snd_seq_real_time time;
 243};
 244
 245struct snd_seq_queue_skew {
 246        unsigned int value;
 247        unsigned int base;
 248};
 249
 250        /* queue timer control */
 251struct snd_seq_ev_queue_control {
 252        unsigned char queue;                    /* affected queue */
 253        unsigned char pad[3];                   /* reserved */
 254        union {
 255                signed int value;               /* affected value (e.g. tempo) */
 256                union snd_seq_timestamp time;   /* time */
 257                unsigned int position;          /* sync position */
 258                struct snd_seq_queue_skew skew;
 259                unsigned int d32[2];
 260                unsigned char d8[8];
 261        } param;
 262};
 263
 264        /* quoted event - inside the kernel only */
 265struct snd_seq_ev_quote {
 266        struct snd_seq_addr origin;             /* original sender */
 267        unsigned short value;           /* optional data */
 268        struct snd_seq_event *event;            /* quoted event */
 269} __attribute__((packed));
 270
 271
 272        /* sequencer event */
 273struct snd_seq_event {
 274        snd_seq_event_type_t type;      /* event type */
 275        unsigned char flags;            /* event flags */
 276        char tag;
 277        
 278        unsigned char queue;            /* schedule queue */
 279        union snd_seq_timestamp time;   /* schedule time */
 280
 281
 282        struct snd_seq_addr source;     /* source address */
 283        struct snd_seq_addr dest;       /* destination address */
 284
 285        union {                         /* event data... */
 286                struct snd_seq_ev_note note;
 287                struct snd_seq_ev_ctrl control;
 288                struct snd_seq_ev_raw8 raw8;
 289                struct snd_seq_ev_raw32 raw32;
 290                struct snd_seq_ev_ext ext;
 291                struct snd_seq_ev_queue_control queue;
 292                union snd_seq_timestamp time;
 293                struct snd_seq_addr addr;
 294                struct snd_seq_connect connect;
 295                struct snd_seq_result result;
 296                struct snd_seq_ev_quote quote;
 297        } data;
 298};
 299
 300
 301/*
 302 * bounce event - stored as variable size data
 303 */
 304struct snd_seq_event_bounce {
 305        int err;
 306        struct snd_seq_event event;
 307        /* external data follows here. */
 308};
 309
 310
 311        /* system information */
 312struct snd_seq_system_info {
 313        int queues;                     /* maximum queues count */
 314        int clients;                    /* maximum clients count */
 315        int ports;                      /* maximum ports per client */
 316        int channels;                   /* maximum channels per port */
 317        int cur_clients;                /* current clients */
 318        int cur_queues;                 /* current queues */
 319        char reserved[24];
 320};
 321
 322
 323        /* system running information */
 324struct snd_seq_running_info {
 325        unsigned char client;           /* client id */
 326        unsigned char big_endian;       /* 1 = big-endian */
 327        unsigned char cpu_mode;         /* 4 = 32bit, 8 = 64bit */
 328        unsigned char pad;              /* reserved */
 329        unsigned char reserved[12];
 330};
 331
 332
 333        /* known client numbers */
 334#define SNDRV_SEQ_CLIENT_SYSTEM         0
 335        /* internal client numbers */
 336#define SNDRV_SEQ_CLIENT_DUMMY          14      /* midi through */
 337#define SNDRV_SEQ_CLIENT_OSS            15      /* oss sequencer emulator */
 338
 339
 340        /* client types */
 341typedef int __bitwise snd_seq_client_type_t;
 342#define NO_CLIENT       ((__force snd_seq_client_type_t) 0)
 343#define USER_CLIENT     ((__force snd_seq_client_type_t) 1)
 344#define KERNEL_CLIENT   ((__force snd_seq_client_type_t) 2)
 345                        
 346        /* event filter flags */
 347#define SNDRV_SEQ_FILTER_BROADCAST      (1<<0)  /* accept broadcast messages */
 348#define SNDRV_SEQ_FILTER_MULTICAST      (1<<1)  /* accept multicast messages */
 349#define SNDRV_SEQ_FILTER_BOUNCE         (1<<2)  /* accept bounce event in error */
 350#define SNDRV_SEQ_FILTER_USE_EVENT      (1<<31) /* use event filter */
 351
 352struct snd_seq_client_info {
 353        int client;                     /* client number to inquire */
 354        snd_seq_client_type_t type;     /* client type */
 355        char name[64];                  /* client name */
 356        unsigned int filter;            /* filter flags */
 357        unsigned char multicast_filter[8]; /* multicast filter bitmap */
 358        unsigned char event_filter[32]; /* event filter bitmap */
 359        int num_ports;                  /* RO: number of ports */
 360        int event_lost;                 /* number of lost events */
 361        int card;                       /* RO: card number[kernel] */
 362        int pid;                        /* RO: pid[user] */
 363        char reserved[56];              /* for future use */
 364};
 365
 366
 367/* client pool size */
 368struct snd_seq_client_pool {
 369        int client;                     /* client number to inquire */
 370        int output_pool;                /* outgoing (write) pool size */
 371        int input_pool;                 /* incoming (read) pool size */
 372        int output_room;                /* minimum free pool size for select/blocking mode */
 373        int output_free;                /* unused size */
 374        int input_free;                 /* unused size */
 375        char reserved[64];
 376};
 377
 378
 379/* Remove events by specified criteria */
 380
 381#define SNDRV_SEQ_REMOVE_INPUT          (1<<0)  /* Flush input queues */
 382#define SNDRV_SEQ_REMOVE_OUTPUT         (1<<1)  /* Flush output queues */
 383#define SNDRV_SEQ_REMOVE_DEST           (1<<2)  /* Restrict by destination q:client:port */
 384#define SNDRV_SEQ_REMOVE_DEST_CHANNEL   (1<<3)  /* Restrict by channel */
 385#define SNDRV_SEQ_REMOVE_TIME_BEFORE    (1<<4)  /* Restrict to before time */
 386#define SNDRV_SEQ_REMOVE_TIME_AFTER     (1<<5)  /* Restrict to time or after */
 387#define SNDRV_SEQ_REMOVE_TIME_TICK      (1<<6)  /* Time is in ticks */
 388#define SNDRV_SEQ_REMOVE_EVENT_TYPE     (1<<7)  /* Restrict to event type */
 389#define SNDRV_SEQ_REMOVE_IGNORE_OFF     (1<<8)  /* Do not flush off events */
 390#define SNDRV_SEQ_REMOVE_TAG_MATCH      (1<<9)  /* Restrict to events with given tag */
 391
 392struct snd_seq_remove_events {
 393        unsigned int  remove_mode;      /* Flags that determine what gets removed */
 394
 395        union snd_seq_timestamp time;
 396
 397        unsigned char queue;    /* Queue for REMOVE_DEST */
 398        struct snd_seq_addr dest;       /* Address for REMOVE_DEST */
 399        unsigned char channel;  /* Channel for REMOVE_DEST */
 400
 401        int  type;      /* For REMOVE_EVENT_TYPE */
 402        char  tag;      /* Tag for REMOVE_TAG */
 403
 404        int  reserved[10];      /* To allow for future binary compatibility */
 405
 406};
 407
 408
 409        /* known port numbers */
 410#define SNDRV_SEQ_PORT_SYSTEM_TIMER     0
 411#define SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE  1
 412
 413        /* port capabilities (32 bits) */
 414#define SNDRV_SEQ_PORT_CAP_READ         (1<<0)  /* readable from this port */
 415#define SNDRV_SEQ_PORT_CAP_WRITE        (1<<1)  /* writable to this port */
 416
 417#define SNDRV_SEQ_PORT_CAP_SYNC_READ    (1<<2)
 418#define SNDRV_SEQ_PORT_CAP_SYNC_WRITE   (1<<3)
 419
 420#define SNDRV_SEQ_PORT_CAP_DUPLEX       (1<<4)
 421
 422#define SNDRV_SEQ_PORT_CAP_SUBS_READ    (1<<5)  /* allow read subscription */
 423#define SNDRV_SEQ_PORT_CAP_SUBS_WRITE   (1<<6)  /* allow write subscription */
 424#define SNDRV_SEQ_PORT_CAP_NO_EXPORT    (1<<7)  /* routing not allowed */
 425
 426        /* port type */
 427#define SNDRV_SEQ_PORT_TYPE_SPECIFIC    (1<<0)  /* hardware specific */
 428#define SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC (1<<1) /* generic MIDI device */
 429#define SNDRV_SEQ_PORT_TYPE_MIDI_GM     (1<<2)  /* General MIDI compatible device */
 430#define SNDRV_SEQ_PORT_TYPE_MIDI_GS     (1<<3)  /* GS compatible device */
 431#define SNDRV_SEQ_PORT_TYPE_MIDI_XG     (1<<4)  /* XG compatible device */
 432#define SNDRV_SEQ_PORT_TYPE_MIDI_MT32   (1<<5)  /* MT-32 compatible device */
 433#define SNDRV_SEQ_PORT_TYPE_MIDI_GM2    (1<<6)  /* General MIDI 2 compatible device */
 434
 435/* other standards...*/
 436#define SNDRV_SEQ_PORT_TYPE_SYNTH       (1<<10) /* Synth device (no MIDI compatible - direct wavetable) */
 437#define SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE (1<<11)       /* Sampling device (support sample download) */
 438#define SNDRV_SEQ_PORT_TYPE_SAMPLE      (1<<12) /* Sampling device (sample can be downloaded at any time) */
 439/*...*/
 440#define SNDRV_SEQ_PORT_TYPE_HARDWARE    (1<<16) /* driver for a hardware device */
 441#define SNDRV_SEQ_PORT_TYPE_SOFTWARE    (1<<17) /* implemented in software */
 442#define SNDRV_SEQ_PORT_TYPE_SYNTHESIZER (1<<18) /* generates sound */
 443#define SNDRV_SEQ_PORT_TYPE_PORT        (1<<19) /* connects to other device(s) */
 444#define SNDRV_SEQ_PORT_TYPE_APPLICATION (1<<20) /* application (sequencer/editor) */
 445
 446/* misc. conditioning flags */
 447#define SNDRV_SEQ_PORT_FLG_GIVEN_PORT   (1<<0)
 448#define SNDRV_SEQ_PORT_FLG_TIMESTAMP    (1<<1)
 449#define SNDRV_SEQ_PORT_FLG_TIME_REAL    (1<<2)
 450
 451struct snd_seq_port_info {
 452        struct snd_seq_addr addr;       /* client/port numbers */
 453        char name[64];                  /* port name */
 454
 455        unsigned int capability;        /* port capability bits */
 456        unsigned int type;              /* port type bits */
 457        int midi_channels;              /* channels per MIDI port */
 458        int midi_voices;                /* voices per MIDI port */
 459        int synth_voices;               /* voices per SYNTH port */
 460
 461        int read_use;                   /* R/O: subscribers for output (from this port) */
 462        int write_use;                  /* R/O: subscribers for input (to this port) */
 463
 464        void *kernel;                   /* reserved for kernel use (must be NULL) */
 465        unsigned int flags;             /* misc. conditioning */
 466        unsigned char time_queue;       /* queue # for timestamping */
 467        char reserved[59];              /* for future use */
 468};
 469
 470
 471/* queue flags */
 472#define SNDRV_SEQ_QUEUE_FLG_SYNC        (1<<0)  /* sync enabled */
 473
 474/* queue information */
 475struct snd_seq_queue_info {
 476        int queue;              /* queue id */
 477
 478        /*
 479         *  security settings, only owner of this queue can start/stop timer
 480         *  etc. if the queue is locked for other clients
 481         */
 482        int owner;              /* client id for owner of the queue */
 483        unsigned locked:1;      /* timing queue locked for other queues */
 484        char name[64];          /* name of this queue */
 485        unsigned int flags;     /* flags */
 486        char reserved[60];      /* for future use */
 487
 488};
 489
 490/* queue info/status */
 491struct snd_seq_queue_status {
 492        int queue;                      /* queue id */
 493        int events;                     /* read-only - queue size */
 494        snd_seq_tick_time_t tick;       /* current tick */
 495        struct snd_seq_real_time time;  /* current time */
 496        int running;                    /* running state of queue */
 497        int flags;                      /* various flags */
 498        char reserved[64];              /* for the future */
 499};
 500
 501
 502/* queue tempo */
 503struct snd_seq_queue_tempo {
 504        int queue;                      /* sequencer queue */
 505        unsigned int tempo;             /* current tempo, us/tick */
 506        int ppq;                        /* time resolution, ticks/quarter */
 507        unsigned int skew_value;        /* queue skew */
 508        unsigned int skew_base;         /* queue skew base */
 509        char reserved[24];              /* for the future */
 510};
 511
 512
 513/* sequencer timer sources */
 514#define SNDRV_SEQ_TIMER_ALSA            0       /* ALSA timer */
 515#define SNDRV_SEQ_TIMER_MIDI_CLOCK      1       /* Midi Clock (CLOCK event) */
 516#define SNDRV_SEQ_TIMER_MIDI_TICK       2       /* Midi Timer Tick (TICK event) */
 517
 518/* queue timer info */
 519struct snd_seq_queue_timer {
 520        int queue;                      /* sequencer queue */
 521        int type;                       /* source timer type */
 522        union {
 523                struct {
 524                        struct snd_timer_id id; /* ALSA's timer ID */
 525                        unsigned int resolution;        /* resolution in Hz */
 526                } alsa;
 527        } u;
 528        char reserved[64];              /* for the future use */
 529};
 530
 531
 532struct snd_seq_queue_client {
 533        int queue;              /* sequencer queue */
 534        int client;             /* sequencer client */
 535        int used;               /* queue is used with this client
 536                                   (must be set for accepting events) */
 537        /* per client watermarks */
 538        char reserved[64];      /* for future use */
 539};
 540
 541
 542#define SNDRV_SEQ_PORT_SUBS_EXCLUSIVE   (1<<0)  /* exclusive connection */
 543#define SNDRV_SEQ_PORT_SUBS_TIMESTAMP   (1<<1)
 544#define SNDRV_SEQ_PORT_SUBS_TIME_REAL   (1<<2)
 545
 546struct snd_seq_port_subscribe {
 547        struct snd_seq_addr sender;     /* sender address */
 548        struct snd_seq_addr dest;       /* destination address */
 549        unsigned int voices;            /* number of voices to be allocated (0 = don't care) */
 550        unsigned int flags;             /* modes */
 551        unsigned char queue;            /* input time-stamp queue (optional) */
 552        unsigned char pad[3];           /* reserved */
 553        char reserved[64];
 554};
 555
 556/* type of query subscription */
 557#define SNDRV_SEQ_QUERY_SUBS_READ       0
 558#define SNDRV_SEQ_QUERY_SUBS_WRITE      1
 559
 560struct snd_seq_query_subs {
 561        struct snd_seq_addr root;       /* client/port id to be searched */
 562        int type;               /* READ or WRITE */
 563        int index;              /* 0..N-1 */
 564        int num_subs;           /* R/O: number of subscriptions on this port */
 565        struct snd_seq_addr addr;       /* R/O: result */
 566        unsigned char queue;    /* R/O: result */
 567        unsigned int flags;     /* R/O: result */
 568        char reserved[64];      /* for future use */
 569};
 570
 571
 572/*
 573 *  IOCTL commands
 574 */
 575
 576#define SNDRV_SEQ_IOCTL_PVERSION        _IOR ('S', 0x00, int)
 577#define SNDRV_SEQ_IOCTL_CLIENT_ID       _IOR ('S', 0x01, int)
 578#define SNDRV_SEQ_IOCTL_SYSTEM_INFO     _IOWR('S', 0x02, struct snd_seq_system_info)
 579#define SNDRV_SEQ_IOCTL_RUNNING_MODE    _IOWR('S', 0x03, struct snd_seq_running_info)
 580
 581#define SNDRV_SEQ_IOCTL_GET_CLIENT_INFO _IOWR('S', 0x10, struct snd_seq_client_info)
 582#define SNDRV_SEQ_IOCTL_SET_CLIENT_INFO _IOW ('S', 0x11, struct snd_seq_client_info)
 583
 584#define SNDRV_SEQ_IOCTL_CREATE_PORT     _IOWR('S', 0x20, struct snd_seq_port_info)
 585#define SNDRV_SEQ_IOCTL_DELETE_PORT     _IOW ('S', 0x21, struct snd_seq_port_info)
 586#define SNDRV_SEQ_IOCTL_GET_PORT_INFO   _IOWR('S', 0x22, struct snd_seq_port_info)
 587#define SNDRV_SEQ_IOCTL_SET_PORT_INFO   _IOW ('S', 0x23, struct snd_seq_port_info)
 588
 589#define SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT  _IOW ('S', 0x30, struct snd_seq_port_subscribe)
 590#define SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT _IOW ('S', 0x31, struct snd_seq_port_subscribe)
 591
 592#define SNDRV_SEQ_IOCTL_CREATE_QUEUE    _IOWR('S', 0x32, struct snd_seq_queue_info)
 593#define SNDRV_SEQ_IOCTL_DELETE_QUEUE    _IOW ('S', 0x33, struct snd_seq_queue_info)
 594#define SNDRV_SEQ_IOCTL_GET_QUEUE_INFO  _IOWR('S', 0x34, struct snd_seq_queue_info)
 595#define SNDRV_SEQ_IOCTL_SET_QUEUE_INFO  _IOWR('S', 0x35, struct snd_seq_queue_info)
 596#define SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE _IOWR('S', 0x36, struct snd_seq_queue_info)
 597#define SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS _IOWR('S', 0x40, struct snd_seq_queue_status)
 598#define SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO _IOWR('S', 0x41, struct snd_seq_queue_tempo)
 599#define SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO _IOW ('S', 0x42, struct snd_seq_queue_tempo)
 600#define SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER _IOWR('S', 0x45, struct snd_seq_queue_timer)
 601#define SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER _IOW ('S', 0x46, struct snd_seq_queue_timer)
 602#define SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT        _IOWR('S', 0x49, struct snd_seq_queue_client)
 603#define SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT        _IOW ('S', 0x4a, struct snd_seq_queue_client)
 604#define SNDRV_SEQ_IOCTL_GET_CLIENT_POOL _IOWR('S', 0x4b, struct snd_seq_client_pool)
 605#define SNDRV_SEQ_IOCTL_SET_CLIENT_POOL _IOW ('S', 0x4c, struct snd_seq_client_pool)
 606#define SNDRV_SEQ_IOCTL_REMOVE_EVENTS   _IOW ('S', 0x4e, struct snd_seq_remove_events)
 607#define SNDRV_SEQ_IOCTL_QUERY_SUBS      _IOWR('S', 0x4f, struct snd_seq_query_subs)
 608#define SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION        _IOWR('S', 0x50, struct snd_seq_port_subscribe)
 609#define SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT       _IOWR('S', 0x51, struct snd_seq_client_info)
 610#define SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT _IOWR('S', 0x52, struct snd_seq_port_info)
 611
 612#endif /* _UAPI__SOUND_ASEQUENCER_H */
 613