/*
 * bthidd.h
 */

/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: bthidd.h,v 1.7 2006/09/07 21:06:53 max Exp $
 */

#ifndef _BTHIDD_H_
#define _BTHIDD_H_ 1

#define BTHIDD_IDENT    "bthidd"
#define BTHIDD_PIDFILE  "/var/run/" BTHIDD_IDENT ".pid"

struct bthid_session;

struct bthid_server
{
        bdaddr_t                         bdaddr; /* local bdaddr */
        int32_t                          cons;   /* /dev/consolectl */
        int32_t                          ctrl;   /* control channel (listen) */
        int32_t                          intr;   /* intr. channel (listen) */
        int32_t                          maxfd;  /* max fd in sets */
        int32_t                          uinput; /* enable evdev support */
        fd_set                           rfdset; /* read descriptor set */
        fd_set                           wfdset; /* write descriptor set */
        LIST_HEAD(, bthid_session)       sessions;
};

typedef struct bthid_server     bthid_server_t;
typedef struct bthid_server *   bthid_server_p;

struct bthid_session
{
        bthid_server_p                   srv;   /* pointer back to server */
        int32_t                          ctrl;  /* control channel */
        int32_t                          intr;  /* interrupt channel */
        int32_t                          vkbd;  /* virual keyboard */
        void                            *ctx;   /* product specific dev state */
        int32_t                          ukbd;  /* evdev user input */
        int32_t                          umouse;/* evdev user input */
        int32_t                          obutt; /* previous mouse buttons */
        int32_t                          consk; /* last consumer page key */
        bdaddr_t                         bdaddr;/* remote bdaddr */
        uint16_t                         state; /* session state */
#define CLOSED  0
#define W4CTRL  1
#define W4INTR  2
#define OPEN    3
        bitstr_t                        *keys1; /* keys map (new) */
        bitstr_t                        *keys2; /* keys map (old) */
        LIST_ENTRY(bthid_session)        next;  /* link to next */
};

typedef struct bthid_session    bthid_session_t;
typedef struct bthid_session *  bthid_session_p;

int32_t         server_init      (bthid_server_p srv);
void            server_shutdown  (bthid_server_p srv);
int32_t         server_do        (bthid_server_p srv);

int32_t         client_rescan    (bthid_server_p srv);
int32_t         client_connect   (bthid_server_p srv, int fd);

bthid_session_p session_open     (bthid_server_p srv, hid_device_p const d);
bthid_session_p session_by_bdaddr(bthid_server_p srv, bdaddr_p bdaddr);
bthid_session_p session_by_fd    (bthid_server_p srv, int32_t fd);
int32_t         session_run      (bthid_session_p s);
void            session_close    (bthid_session_p s);

void            hid_initialise   (bthid_session_p s);
int32_t         hid_control      (bthid_session_p s, uint8_t *data, int32_t len);
int32_t         hid_interrupt    (bthid_session_p s, uint8_t *data, int32_t len);

#endif /* ndef _BTHIDD_H_ */