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#ifndef __SOUND_SEQ_KERNEL_H

#define __SOUND_SEQ_KERNEL_H

/*

 *  Main kernel header file for the ALSA sequencer

 *  Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>

 *

 *

 *   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

 *

 */

#include <linux/time.h>

#include "asequencer.h"

typedef struct snd_seq_real_time snd_seq_real_time_t;

typedef union snd_seq_timestamp snd_seq_timestamp_t;

/* maximum number of events dequeued per schedule interval */

#define SNDRV_SEQ_MAX_DEQUEUE           50

/* maximum number of queues */

#define SNDRV_SEQ_MAX_QUEUES            8

/* max number of concurrent clients */

#define SNDRV_SEQ_MAX_CLIENTS           192

/* max number of concurrent ports */

#define SNDRV_SEQ_MAX_PORTS             254

/* max number of events in memory pool */

#define SNDRV_SEQ_MAX_EVENTS            2000

/* default number of events in memory chunk */

#define SNDRV_SEQ_DEFAULT_CHUNK_EVENTS  64

/* default number of events in memory pool */

#define SNDRV_SEQ_DEFAULT_EVENTS        500

/* max number of events in memory pool for one client (outqueue) */

#define SNDRV_SEQ_MAX_CLIENT_EVENTS     2000

/* default number of events in memory pool for one client (outqueue) */

#define SNDRV_SEQ_DEFAULT_CLIENT_EVENTS 200

/* max delivery path length */

#define SNDRV_SEQ_MAX_HOPS              10

/* max size of event size */

#define SNDRV_SEQ_MAX_EVENT_LEN         0x3fffffff

/* call-backs for kernel port */

struct snd_seq_port_callback {

        struct module *owner;

        void *private_data;

        int (*subscribe)(void *private_data, struct snd_seq_port_subscribe *info);

        int (*unsubscribe)(void *private_data, struct snd_seq_port_subscribe *info);

        int (*use)(void *private_data, struct snd_seq_port_subscribe *info);

        int (*unuse)(void *private_data, struct snd_seq_port_subscribe *info);

        int (*event_input)(struct snd_seq_event *ev, int direct, void *private_data, int atomic, int hop);

        void (*private_free)(void *private_data);

        unsigned int callback_all;      /* call subscribe callbacks at each connection/disconnection */

        /*...*/

};

/* interface for kernel client */

int snd_seq_create_kernel_client(struct snd_card *card, int client_index,

                                 const char *name_fmt, ...)

        __attribute__ ((format (printf, 3, 4)));

int snd_seq_delete_kernel_client(int client);

int snd_seq_kernel_client_enqueue(int client, struct snd_seq_event *ev, int atomic, int hop);

int snd_seq_kernel_client_dispatch(int client, struct snd_seq_event *ev, int atomic, int hop);

int snd_seq_kernel_client_ctl(int client, unsigned int cmd, void *arg);

#define SNDRV_SEQ_EXT_MASK      0xc0000000

#define SNDRV_SEQ_EXT_USRPTR    0x80000000

#define SNDRV_SEQ_EXT_CHAINED   0x40000000

typedef int (*snd_seq_dump_func_t)(void *ptr, void *buf, int count);

int snd_seq_expand_var_event(const struct snd_seq_event *event, int count, char *buf,

                             int in_kernel, int size_aligned);

int snd_seq_dump_var_event(const struct snd_seq_event *event,

                           snd_seq_dump_func_t func, void *private_data);

/* interface for OSS emulation */

int snd_seq_set_queue_tempo(int client, struct snd_seq_queue_tempo *tempo);

/* port callback routines */

void snd_port_init_callback(struct snd_seq_port_callback *p);

struct snd_seq_port_callback *snd_port_alloc_callback(void);

/* port attach/detach */

int snd_seq_event_port_attach(int client, struct snd_seq_port_callback *pcbp,

                              int cap, int type, int midi_channels, int midi_voices, char *portname);

int snd_seq_event_port_detach(int client, int port);

#ifdef CONFIG_KMOD

void snd_seq_autoload_lock(void);

void snd_seq_autoload_unlock(void);

#else

#define snd_seq_autoload_lock()

#define snd_seq_autoload_unlock()

#endif

#endif /* __SOUND_SEQ_KERNEL_H */