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root/include/sound/asequencer.h

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/*
 *  Main header file for the ALSA sequencer
 *  Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
 *            (c) 1998-1999 by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */
#ifndef __SOUND_ASEQUENCER_H
#define __SOUND_ASEQUENCER_H

#ifdef __KERNEL__
#include <linux/ioctl.h>
#include <sound/asound.h>
#endif

/** version of the sequencer */
#define SNDRV_SEQ_VERSION SNDRV_PROTOCOL_VERSION (1, 0, 1)

/**
 * definition of sequencer event types
 */

/** system messages
 * event data type = #snd_seq_result
 */
#define SNDRV_SEQ_EVENT_SYSTEM          0
#define SNDRV_SEQ_EVENT_RESULT          1

/** note messages (channel specific)
 * event data type = #snd_seq_ev_note
 */
#define SNDRV_SEQ_EVENT_NOTE            5
#define SNDRV_SEQ_EVENT_NOTEON          6
#define SNDRV_SEQ_EVENT_NOTEOFF         7
#define SNDRV_SEQ_EVENT_KEYPRESS        8
        
/** control messages (channel specific)
 * event data type = #snd_seq_ev_ctrl
 */
#define SNDRV_SEQ_EVENT_CONTROLLER      10
#define SNDRV_SEQ_EVENT_PGMCHANGE       11
#define SNDRV_SEQ_EVENT_CHANPRESS       12
#define SNDRV_SEQ_EVENT_PITCHBEND       13      /**< from -8192 to 8191 */
#define SNDRV_SEQ_EVENT_CONTROL14       14      /**< 14 bit controller value */
#define SNDRV_SEQ_EVENT_NONREGPARAM     15      /**< 14 bit NRPN address + 14 bit unsigned value */
#define SNDRV_SEQ_EVENT_REGPARAM        16      /**< 14 bit RPN address + 14 bit unsigned value */

/** synchronisation messages
 * event data type = #snd_seq_ev_ctrl
 */
#define SNDRV_SEQ_EVENT_SONGPOS         20      /* Song Position Pointer with LSB and MSB values */
#define SNDRV_SEQ_EVENT_SONGSEL         21      /* Song Select with song ID number */
#define SNDRV_SEQ_EVENT_QFRAME          22      /* midi time code quarter frame */
#define SNDRV_SEQ_EVENT_TIMESIGN        23      /* SMF Time Signature event */
#define SNDRV_SEQ_EVENT_KEYSIGN         24      /* SMF Key Signature event */
                
/** timer messages
 * event data type = snd_seq_ev_queue_control
 */
#define SNDRV_SEQ_EVENT_START           30      /* midi Real Time Start message */
#define SNDRV_SEQ_EVENT_CONTINUE        31      /* midi Real Time Continue message */
#define SNDRV_SEQ_EVENT_STOP            32      /* midi Real Time Stop message */       
#define SNDRV_SEQ_EVENT_SETPOS_TICK     33      /* set tick queue position */
#define SNDRV_SEQ_EVENT_SETPOS_TIME     34      /* set realtime queue position */
#define SNDRV_SEQ_EVENT_TEMPO           35      /* (SMF) Tempo event */
#define SNDRV_SEQ_EVENT_CLOCK           36      /* midi Real Time Clock message */
#define SNDRV_SEQ_EVENT_TICK            37      /* midi Real Time Tick message */
#define SNDRV_SEQ_EVENT_QUEUE_SKEW      38      /* skew queue tempo */

/** others
 * event data type = none
 */
#define SNDRV_SEQ_EVENT_TUNE_REQUEST    40      /* tune request */
#define SNDRV_SEQ_EVENT_RESET           41      /* reset to power-on state */
#define SNDRV_SEQ_EVENT_SENSING         42      /* "active sensing" event */

/** echo back, kernel private messages
 * event data type = any type
 */
#define SNDRV_SEQ_EVENT_ECHO            50      /* echo event */
#define SNDRV_SEQ_EVENT_OSS             51      /* OSS raw event */

/** system status messages (broadcast for subscribers)
 * event data type = snd_seq_addr
 */
#define SNDRV_SEQ_EVENT_CLIENT_START    60      /* new client has connected */
#define SNDRV_SEQ_EVENT_CLIENT_EXIT     61      /* client has left the system */
#define SNDRV_SEQ_EVENT_CLIENT_CHANGE   62      /* client status/info has changed */
#define SNDRV_SEQ_EVENT_PORT_START      63      /* new port was created */
#define SNDRV_SEQ_EVENT_PORT_EXIT       64      /* port was deleted from system */
#define SNDRV_SEQ_EVENT_PORT_CHANGE     65      /* port status/info has changed */

/** port connection changes
 * event data type = snd_seq_connect
 */
#define SNDRV_SEQ_EVENT_PORT_SUBSCRIBED 66      /* ports connected */
#define SNDRV_SEQ_EVENT_PORT_UNSUBSCRIBED 67    /* ports disconnected */

/* 70-89:  synthesizer events - obsoleted */

/** user-defined events with fixed length
 * event data type = any
 */
#define SNDRV_SEQ_EVENT_USR0            90
#define SNDRV_SEQ_EVENT_USR1            91
#define SNDRV_SEQ_EVENT_USR2            92
#define SNDRV_SEQ_EVENT_USR3            93
#define SNDRV_SEQ_EVENT_USR4            94
#define SNDRV_SEQ_EVENT_USR5            95
#define SNDRV_SEQ_EVENT_USR6            96
#define SNDRV_SEQ_EVENT_USR7            97
#define SNDRV_SEQ_EVENT_USR8            98
#define SNDRV_SEQ_EVENT_USR9            99

/* 100-118: instrument layer - obsoleted */
/* 119-129: reserved */

/* 130-139: variable length events
 * event data type = snd_seq_ev_ext
 * (SNDRV_SEQ_EVENT_LENGTH_VARIABLE must be set)
 */
#define SNDRV_SEQ_EVENT_SYSEX           130     /* system exclusive data (variable length) */
#define SNDRV_SEQ_EVENT_BOUNCE          131     /* error event */
/* 132-134: reserved */
#define SNDRV_SEQ_EVENT_USR_VAR0        135
#define SNDRV_SEQ_EVENT_USR_VAR1        136
#define SNDRV_SEQ_EVENT_USR_VAR2        137
#define SNDRV_SEQ_EVENT_USR_VAR3        138
#define SNDRV_SEQ_EVENT_USR_VAR4        139

/* 150-151: kernel events with quote - DO NOT use in user clients */
#define SNDRV_SEQ_EVENT_KERNEL_ERROR    150
#define SNDRV_SEQ_EVENT_KERNEL_QUOTE    151     /* obsolete */

/* 152-191: reserved */

/* 192-254: hardware specific events */

/* 255: special event */
#define SNDRV_SEQ_EVENT_NONE            255


typedef unsigned char snd_seq_event_type_t;

/** event address */
struct snd_seq_addr {
        unsigned char client;   /**< Client number:         0..255, 255 = broadcast to all clients */
        unsigned char port;     /**< Port within client:    0..255, 255 = broadcast to all ports */
};

/** port connection */
struct snd_seq_connect {
        struct snd_seq_addr sender;
        struct snd_seq_addr dest;
};


#define SNDRV_SEQ_ADDRESS_UNKNOWN       253     /* unknown source */
#define SNDRV_SEQ_ADDRESS_SUBSCRIBERS   254     /* send event to all subscribed ports */
#define SNDRV_SEQ_ADDRESS_BROADCAST     255     /* send event to all queues/clients/ports/channels */
#define SNDRV_SEQ_QUEUE_DIRECT          253     /* direct dispatch */

        /* event mode flag - NOTE: only 8 bits available! */
#define SNDRV_SEQ_TIME_STAMP_TICK       (0<<0) /* timestamp in clock ticks */
#define SNDRV_SEQ_TIME_STAMP_REAL       (1<<0) /* timestamp in real time */
#define SNDRV_SEQ_TIME_STAMP_MASK       (1<<0)

#define SNDRV_SEQ_TIME_MODE_ABS         (0<<1)  /* absolute timestamp */
#define SNDRV_SEQ_TIME_MODE_REL         (1<<1)  /* relative to current time */
#define SNDRV_SEQ_TIME_MODE_MASK        (1<<1)

#define SNDRV_SEQ_EVENT_LENGTH_FIXED    (0<<2)  /* fixed event size */
#define SNDRV_SEQ_EVENT_LENGTH_VARIABLE (1<<2)  /* variable event size */
#define SNDRV_SEQ_EVENT_LENGTH_VARUSR   (2<<2)  /* variable event size - user memory space */
#define SNDRV_SEQ_EVENT_LENGTH_MASK     (3<<2)

#define SNDRV_SEQ_PRIORITY_NORMAL       (0<<4)  /* normal priority */
#define SNDRV_SEQ_PRIORITY_HIGH         (1<<4)  /* event should be processed before others */
#define SNDRV_SEQ_PRIORITY_MASK         (1<<4)


        /* note event */
struct snd_seq_ev_note {
        unsigned char channel;
        unsigned char note;
        unsigned char velocity;
        unsigned char off_velocity;     /* only for SNDRV_SEQ_EVENT_NOTE */
        unsigned int duration;          /* only for SNDRV_SEQ_EVENT_NOTE */
};

        /* controller event */
struct snd_seq_ev_ctrl {
        unsigned char channel;
        unsigned char unused1, unused2, unused3;        /* pad */
        unsigned int param;
        signed int value;
};

        /* generic set of bytes (12x8 bit) */
struct snd_seq_ev_raw8 {
        unsigned char d[12];    /* 8 bit value */
};

        /* generic set of integers (3x32 bit) */
struct snd_seq_ev_raw32 {
        unsigned int d[3];      /* 32 bit value */
};

        /* external stored data */
struct snd_seq_ev_ext {
        unsigned int len;       /* length of data */
        void *ptr;              /* pointer to data (note: maybe 64-bit) */
} __attribute__((packed));

struct snd_seq_result {
        int event;              /* processed event type */
        int result;
};


struct snd_seq_real_time {
        unsigned int tv_sec;    /* seconds */
        unsigned int tv_nsec;   /* nanoseconds */
};

typedef unsigned int snd_seq_tick_time_t;       /* midi ticks */

union snd_seq_timestamp {
        snd_seq_tick_time_t tick;
        struct snd_seq_real_time time;
};

struct snd_seq_queue_skew {
        unsigned int value;
        unsigned int base;
};

        /* queue timer control */
struct snd_seq_ev_queue_control {
        unsigned char queue;                    /* affected queue */
        unsigned char pad[3];                   /* reserved */
        union {
                signed int value;               /* affected value (e.g. tempo) */
                union snd_seq_timestamp time;   /* time */
                unsigned int position;          /* sync position */
                struct snd_seq_queue_skew skew;
                unsigned int d32[2];
                unsigned char d8[8];
        } param;
};

        /* quoted event - inside the kernel only */
struct snd_seq_ev_quote {
        struct snd_seq_addr origin;             /* original sender */
        unsigned short value;           /* optional data */
        struct snd_seq_event *event;            /* quoted event */
} __attribute__((packed));


        /* sequencer event */
struct snd_seq_event {
        snd_seq_event_type_t type;      /* event type */
        unsigned char flags;            /* event flags */
        char tag;
        
        unsigned char queue;            /* schedule queue */
        union snd_seq_timestamp time;   /* schedule time */


        struct snd_seq_addr source;     /* source address */
        struct snd_seq_addr dest;       /* destination address */

        union {                         /* event data... */
                struct snd_seq_ev_note note;
                struct snd_seq_ev_ctrl control;
                struct snd_seq_ev_raw8 raw8;
                struct snd_seq_ev_raw32 raw32;
                struct snd_seq_ev_ext ext;
                struct snd_seq_ev_queue_control queue;
                union snd_seq_timestamp time;
                struct snd_seq_addr addr;
                struct snd_seq_connect connect;
                struct snd_seq_result result;
                struct snd_seq_ev_quote quote;
        } data;
};


/*
 * bounce event - stored as variable size data
 */
struct snd_seq_event_bounce {
        int err;
        struct snd_seq_event event;
        /* external data follows here. */
};

#ifdef __KERNEL__

/* helper macro */
#define snd_seq_event_bounce_ext_data(ev) ((void*)((char *)(ev)->data.ext.ptr + sizeof(struct snd_seq_event_bounce)))

/*
 * type check macros
 */
/* result events: 0-4 */
#define snd_seq_ev_is_result_type(ev)   ((ev)->type < 5)
/* channel specific events: 5-19 */
#define snd_seq_ev_is_channel_type(ev)  ((ev)->type >= 5 && (ev)->type < 20)
/* note events: 5-9 */
#define snd_seq_ev_is_note_type(ev)     ((ev)->type >= 5 && (ev)->type < 10)
/* control events: 10-19 */
#define snd_seq_ev_is_control_type(ev)  ((ev)->type >= 10 && (ev)->type < 20)
/* queue control events: 30-39 */
#define snd_seq_ev_is_queue_type(ev)    ((ev)->type >= 30 && (ev)->type < 40)
/* system status messages */
#define snd_seq_ev_is_message_type(ev)  ((ev)->type >= 60 && (ev)->type < 69)
/* sample messages */
#define snd_seq_ev_is_sample_type(ev)   ((ev)->type >= 70 && (ev)->type < 79)
/* user-defined messages */
#define snd_seq_ev_is_user_type(ev)     ((ev)->type >= 90 && (ev)->type < 99)
/* fixed length events: 0-99 */
#define snd_seq_ev_is_fixed_type(ev)    ((ev)->type < 100)
/* variable length events: 130-139 */
#define snd_seq_ev_is_variable_type(ev) ((ev)->type >= 130 && (ev)->type < 140)
/* reserved for kernel */
#define snd_seq_ev_is_reserved(ev)      ((ev)->type >= 150)

/* direct dispatched events */
#define snd_seq_ev_is_direct(ev)        ((ev)->queue == SNDRV_SEQ_QUEUE_DIRECT)

/*
 * macros to check event flags
 */
/* prior events */
#define snd_seq_ev_is_prior(ev)         (((ev)->flags & SNDRV_SEQ_PRIORITY_MASK) == SNDRV_SEQ_PRIORITY_HIGH)

/* event length type */
#define snd_seq_ev_length_type(ev)      ((ev)->flags & SNDRV_SEQ_EVENT_LENGTH_MASK)
#define snd_seq_ev_is_fixed(ev)         (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_FIXED)
#define snd_seq_ev_is_variable(ev)      (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
#define snd_seq_ev_is_varusr(ev)        (snd_seq_ev_length_type(ev) == SNDRV_SEQ_EVENT_LENGTH_VARUSR)

/* time-stamp type */
#define snd_seq_ev_timestamp_type(ev)   ((ev)->flags & SNDRV_SEQ_TIME_STAMP_MASK)
#define snd_seq_ev_is_tick(ev)          (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_TICK)
#define snd_seq_ev_is_real(ev)          (snd_seq_ev_timestamp_type(ev) == SNDRV_SEQ_TIME_STAMP_REAL)

/* time-mode type */
#define snd_seq_ev_timemode_type(ev)    ((ev)->flags & SNDRV_SEQ_TIME_MODE_MASK)
#define snd_seq_ev_is_abstime(ev)       (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_ABS)
#define snd_seq_ev_is_reltime(ev)       (snd_seq_ev_timemode_type(ev) == SNDRV_SEQ_TIME_MODE_REL)

/* queue sync port */
#define snd_seq_queue_sync_port(q)      ((q) + 16)

#endif /* __KERNEL__ */

        /* system information */
struct snd_seq_system_info {
        int queues;                     /* maximum queues count */
        int clients;                    /* maximum clients count */
        int ports;                      /* maximum ports per client */
        int channels;                   /* maximum channels per port */
        int cur_clients;                /* current clients */
        int cur_queues;                 /* current queues */
        char reserved[24];
};


        /* system running information */
struct snd_seq_running_info {
        unsigned char client;           /* client id */
        unsigned char big_endian;       /* 1 = big-endian */
        unsigned char cpu_mode;         /* 4 = 32bit, 8 = 64bit */
        unsigned char pad;              /* reserved */
        unsigned char reserved[12];
};


        /* known client numbers */
#define SNDRV_SEQ_CLIENT_SYSTEM         0
        /* internal client numbers */
#define SNDRV_SEQ_CLIENT_DUMMY          14      /* midi through */
#define SNDRV_SEQ_CLIENT_OSS            15      /* oss sequencer emulator */


        /* client types */
typedef int __bitwise snd_seq_client_type_t;
#define NO_CLIENT       ((__force snd_seq_client_type_t) 0)
#define USER_CLIENT     ((__force snd_seq_client_type_t) 1)
#define KERNEL_CLIENT   ((__force snd_seq_client_type_t) 2)
                        
        /* event filter flags */
#define SNDRV_SEQ_FILTER_BROADCAST      (1<<0)  /* accept broadcast messages */
#define SNDRV_SEQ_FILTER_MULTICAST      (1<<1)  /* accept multicast messages */
#define SNDRV_SEQ_FILTER_BOUNCE         (1<<2)  /* accept bounce event in error */
#define SNDRV_SEQ_FILTER_USE_EVENT      (1<<31) /* use event filter */

struct snd_seq_client_info {
        int client;                     /* client number to inquire */
        snd_seq_client_type_t type;     /* client type */
        char name[64];                  /* client name */
        unsigned int filter;            /* filter flags */
        unsigned char multicast_filter[8]; /* multicast filter bitmap */
        unsigned char event_filter[32]; /* event filter bitmap */
        int num_ports;                  /* RO: number of ports */
        int event_lost;                 /* number of lost events */
        char reserved[64];              /* for future use */
};


/* client pool size */
struct snd_seq_client_pool {
        int client;                     /* client number to inquire */
        int output_pool;                /* outgoing (write) pool size */
        int input_pool;                 /* incoming (read) pool size */
        int output_room;                /* minimum free pool size for select/blocking mode */
        int output_free;                /* unused size */
        int input_free;                 /* unused size */
        char reserved[64];
};


/* Remove events by specified criteria */

#define SNDRV_SEQ_REMOVE_INPUT          (1<<0)  /* Flush input queues */
#define SNDRV_SEQ_REMOVE_OUTPUT         (1<<1)  /* Flush output queues */
#define SNDRV_SEQ_REMOVE_DEST           (1<<2)  /* Restrict by destination q:client:port */
#define SNDRV_SEQ_REMOVE_DEST_CHANNEL   (1<<3)  /* Restrict by channel */
#define SNDRV_SEQ_REMOVE_TIME_BEFORE    (1<<4)  /* Restrict to before time */
#define SNDRV_SEQ_REMOVE_TIME_AFTER     (1<<5)  /* Restrict to time or after */
#define SNDRV_SEQ_REMOVE_TIME_TICK      (1<<6)  /* Time is in ticks */
#define SNDRV_SEQ_REMOVE_EVENT_TYPE     (1<<7)  /* Restrict to event type */
#define SNDRV_SEQ_REMOVE_IGNORE_OFF     (1<<8)  /* Do not flush off events */
#define SNDRV_SEQ_REMOVE_TAG_MATCH      (1<<9)  /* Restrict to events with given tag */

struct snd_seq_remove_events {
        unsigned int  remove_mode;      /* Flags that determine what gets removed */

        union snd_seq_timestamp time;

        unsigned char queue;    /* Queue for REMOVE_DEST */
        struct snd_seq_addr dest;       /* Address for REMOVE_DEST */
        unsigned char channel;  /* Channel for REMOVE_DEST */

        int  type;      /* For REMOVE_EVENT_TYPE */
        char  tag;      /* Tag for REMOVE_TAG */

        int  reserved[10];      /* To allow for future binary compatibility */

};


        /* known port numbers */
#define SNDRV_SEQ_PORT_SYSTEM_TIMER     0
#define SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE  1

        /* port capabilities (32 bits) */
#define SNDRV_SEQ_PORT_CAP_READ         (1<<0)  /* readable from this port */
#define SNDRV_SEQ_PORT_CAP_WRITE        (1<<1)  /* writable to this port */

#define SNDRV_SEQ_PORT_CAP_SYNC_READ    (1<<2)
#define SNDRV_SEQ_PORT_CAP_SYNC_WRITE   (1<<3)

#define SNDRV_SEQ_PORT_CAP_DUPLEX       (1<<4)

#define SNDRV_SEQ_PORT_CAP_SUBS_READ    (1<<5)  /* allow read subscription */
#define SNDRV_SEQ_PORT_CAP_SUBS_WRITE   (1<<6)  /* allow write subscription */
#define SNDRV_SEQ_PORT_CAP_NO_EXPORT    (1<<7)  /* routing not allowed */

        /* port type */
#define SNDRV_SEQ_PORT_TYPE_SPECIFIC    (1<<0)  /* hardware specific */
#define SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC (1<<1) /* generic MIDI device */
#define SNDRV_SEQ_PORT_TYPE_MIDI_GM     (1<<2)  /* General MIDI compatible device */
#define SNDRV_SEQ_PORT_TYPE_MIDI_GS     (1<<3)  /* GS compatible device */
#define SNDRV_SEQ_PORT_TYPE_MIDI_XG     (1<<4)  /* XG compatible device */
#define SNDRV_SEQ_PORT_TYPE_MIDI_MT32   (1<<5)  /* MT-32 compatible device */
#define SNDRV_SEQ_PORT_TYPE_MIDI_GM2    (1<<6)  /* General MIDI 2 compatible device */

/* other standards...*/
#define SNDRV_SEQ_PORT_TYPE_SYNTH       (1<<10) /* Synth device (no MIDI compatible - direct wavetable) */
#define SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE (1<<11)       /* Sampling device (support sample download) */
#define SNDRV_SEQ_PORT_TYPE_SAMPLE      (1<<12) /* Sampling device (sample can be downloaded at any time) */
/*...*/
#define SNDRV_SEQ_PORT_TYPE_HARDWARE    (1<<16) /* driver for a hardware device */
#define SNDRV_SEQ_PORT_TYPE_SOFTWARE    (1<<17) /* implemented in software */
#define SNDRV_SEQ_PORT_TYPE_SYNTHESIZER (1<<18) /* generates sound */
#define SNDRV_SEQ_PORT_TYPE_PORT        (1<<19) /* connects to other device(s) */
#define SNDRV_SEQ_PORT_TYPE_APPLICATION (1<<20) /* application (sequencer/editor) */

/* misc. conditioning flags */
#define SNDRV_SEQ_PORT_FLG_GIVEN_PORT   (1<<0)
#define SNDRV_SEQ_PORT_FLG_TIMESTAMP    (1<<1)
#define SNDRV_SEQ_PORT_FLG_TIME_REAL    (1<<2)

struct snd_seq_port_info {
        struct snd_seq_addr addr;       /* client/port numbers */
        char name[64];                  /* port name */

        unsigned int capability;        /* port capability bits */
        unsigned int type;              /* port type bits */
        int midi_channels;              /* channels per MIDI port */
        int midi_voices;                /* voices per MIDI port */
        int synth_voices;               /* voices per SYNTH port */

        int read_use;                   /* R/O: subscribers for output (from this port) */
        int write_use;                  /* R/O: subscribers for input (to this port) */

        void *kernel;                   /* reserved for kernel use (must be NULL) */
        unsigned int flags;             /* misc. conditioning */
        unsigned char time_queue;       /* queue # for timestamping */
        char reserved[59];              /* for future use */
};


/* queue flags */
#define SNDRV_SEQ_QUEUE_FLG_SYNC        (1<<0)  /* sync enabled */

/* queue information */
struct snd_seq_queue_info {
        int queue;              /* queue id */

        /*
         *  security settings, only owner of this queue can start/stop timer
         *  etc. if the queue is locked for other clients
         */
        int owner;              /* client id for owner of the queue */
        unsigned locked:1;      /* timing queue locked for other queues */
        char name[64];          /* name of this queue */
        unsigned int flags;     /* flags */
        char reserved[60];      /* for future use */

};

/* queue info/status */
struct snd_seq_queue_status {
        int queue;                      /* queue id */
        int events;                     /* read-only - queue size */
        snd_seq_tick_time_t tick;       /* current tick */
        struct snd_seq_real_time time;  /* current time */
        int running;                    /* running state of queue */
        int flags;                      /* various flags */
        char reserved[64];              /* for the future */
};


/* queue tempo */
struct snd_seq_queue_tempo {
        int queue;                      /* sequencer queue */
        unsigned int tempo;             /* current tempo, us/tick */
        int ppq;                        /* time resolution, ticks/quarter */
        unsigned int skew_value;        /* queue skew */
        unsigned int skew_base;         /* queue skew base */
        char reserved[24];              /* for the future */
};


/* sequencer timer sources */
#define SNDRV_SEQ_TIMER_ALSA            0       /* ALSA timer */
#define SNDRV_SEQ_TIMER_MIDI_CLOCK      1       /* Midi Clock (CLOCK event) */
#define SNDRV_SEQ_TIMER_MIDI_TICK       2       /* Midi Timer Tick (TICK event) */

/* queue timer info */
struct snd_seq_queue_timer {
        int queue;                      /* sequencer queue */
        int type;                       /* source timer type */
        union {
                struct {
                        struct snd_timer_id id; /* ALSA's timer ID */
                        unsigned int resolution;        /* resolution in Hz */
                } alsa;
        } u;
        char reserved[64];              /* for the future use */
};


struct snd_seq_queue_client {
        int queue;              /* sequencer queue */
        int client;             /* sequencer client */
        int used;               /* queue is used with this client
                                   (must be set for accepting events) */
        /* per client watermarks */
        char reserved[64];      /* for future use */
};


#define SNDRV_SEQ_PORT_SUBS_EXCLUSIVE   (1<<0)  /* exclusive connection */
#define SNDRV_SEQ_PORT_SUBS_TIMESTAMP   (1<<1)
#define SNDRV_SEQ_PORT_SUBS_TIME_REAL   (1<<2)

struct snd_seq_port_subscribe {
        struct snd_seq_addr sender;     /* sender address */
        struct snd_seq_addr dest;       /* destination address */
        unsigned int voices;            /* number of voices to be allocated (0 = don't care) */
        unsigned int flags;             /* modes */
        unsigned char queue;            /* input time-stamp queue (optional) */
        unsigned char pad[3];           /* reserved */
        char reserved[64];
};

/* type of query subscription */
#define SNDRV_SEQ_QUERY_SUBS_READ       0
#define SNDRV_SEQ_QUERY_SUBS_WRITE      1

struct snd_seq_query_subs {
        struct snd_seq_addr root;       /* client/port id to be searched */
        int type;               /* READ or WRITE */
        int index;              /* 0..N-1 */
        int num_subs;           /* R/O: number of subscriptions on this port */
        struct snd_seq_addr addr;       /* R/O: result */
        unsigned char queue;    /* R/O: result */
        unsigned int flags;     /* R/O: result */
        char reserved[64];      /* for future use */
};


/*
 *  IOCTL commands
 */

#define SNDRV_SEQ_IOCTL_PVERSION        _IOR ('S', 0x00, int)
#define SNDRV_SEQ_IOCTL_CLIENT_ID       _IOR ('S', 0x01, int)
#define SNDRV_SEQ_IOCTL_SYSTEM_INFO     _IOWR('S', 0x02, struct snd_seq_system_info)
#define SNDRV_SEQ_IOCTL_RUNNING_MODE    _IOWR('S', 0x03, struct snd_seq_running_info)

#define SNDRV_SEQ_IOCTL_GET_CLIENT_INFO _IOWR('S', 0x10, struct snd_seq_client_info)
#define SNDRV_SEQ_IOCTL_SET_CLIENT_INFO _IOW ('S', 0x11, struct snd_seq_client_info)

#define SNDRV_SEQ_IOCTL_CREATE_PORT     _IOWR('S', 0x20, struct snd_seq_port_info)
#define SNDRV_SEQ_IOCTL_DELETE_PORT     _IOW ('S', 0x21, struct snd_seq_port_info)
#define SNDRV_SEQ_IOCTL_GET_PORT_INFO   _IOWR('S', 0x22, struct snd_seq_port_info)
#define SNDRV_SEQ_IOCTL_SET_PORT_INFO   _IOW ('S', 0x23, struct snd_seq_port_info)

#define SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT  _IOW ('S', 0x30, struct snd_seq_port_subscribe)
#define SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT _IOW ('S', 0x31, struct snd_seq_port_subscribe)

#define SNDRV_SEQ_IOCTL_CREATE_QUEUE    _IOWR('S', 0x32, struct snd_seq_queue_info)
#define SNDRV_SEQ_IOCTL_DELETE_QUEUE    _IOW ('S', 0x33, struct snd_seq_queue_info)
#define SNDRV_SEQ_IOCTL_GET_QUEUE_INFO  _IOWR('S', 0x34, struct snd_seq_queue_info)
#define SNDRV_SEQ_IOCTL_SET_QUEUE_INFO  _IOWR('S', 0x35, struct snd_seq_queue_info)
#define SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE _IOWR('S', 0x36, struct snd_seq_queue_info)
#define SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS _IOWR('S', 0x40, struct snd_seq_queue_status)
#define SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO _IOWR('S', 0x41, struct snd_seq_queue_tempo)
#define SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO _IOW ('S', 0x42, struct snd_seq_queue_tempo)
#define SNDRV_SEQ_IOCTL_GET_QUEUE_OWNER _IOWR('S', 0x43, struct snd_seq_queue_owner)
#define SNDRV_SEQ_IOCTL_SET_QUEUE_OWNER _IOW ('S', 0x44, struct snd_seq_queue_owner)
#define SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER _IOWR('S', 0x45, struct snd_seq_queue_timer)
#define SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER _IOW ('S', 0x46, struct snd_seq_queue_timer)
/* XXX
#define SNDRV_SEQ_IOCTL_GET_QUEUE_SYNC  _IOWR('S', 0x53, struct snd_seq_queue_sync)
#define SNDRV_SEQ_IOCTL_SET_QUEUE_SYNC  _IOW ('S', 0x54, struct snd_seq_queue_sync)
*/
#define SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT        _IOWR('S', 0x49, struct snd_seq_queue_client)
#define SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT        _IOW ('S', 0x4a, struct snd_seq_queue_client)
#define SNDRV_SEQ_IOCTL_GET_CLIENT_POOL _IOWR('S', 0x4b, struct snd_seq_client_pool)
#define SNDRV_SEQ_IOCTL_SET_CLIENT_POOL _IOW ('S', 0x4c, struct snd_seq_client_pool)
#define SNDRV_SEQ_IOCTL_REMOVE_EVENTS   _IOW ('S', 0x4e, struct snd_seq_remove_events)
#define SNDRV_SEQ_IOCTL_QUERY_SUBS      _IOWR('S', 0x4f, struct snd_seq_query_subs)
#define SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION        _IOWR('S', 0x50, struct snd_seq_port_subscribe)
#define SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT       _IOWR('S', 0x51, struct snd_seq_client_info)
#define SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT _IOWR('S', 0x52, struct snd_seq_port_info)

#endif /* __SOUND_ASEQUENCER_H */

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