/******************************************************************************
 *
 *  Copyright (C) 2002-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/
#ifndef BTA_HH_API_H
#define BTA_HH_API_H

#include "bta_api.h"
#include "hidh_api.h"

#if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)
#include "gatt_api.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif

/*****************************************************************************
**  Constants and Type Definitions
*****************************************************************************/
#ifndef BTA_HH_DEBUG
#define BTA_HH_DEBUG    TRUE
#endif

#ifndef BTA_HH_SSR_MAX_LATENCY_DEF
#define BTA_HH_SSR_MAX_LATENCY_DEF  800 /* 500 ms*/
#endif

#ifndef BTA_HH_SSR_MIN_TOUT_DEF
#define BTA_HH_SSR_MIN_TOUT_DEF     2
#endif

/* BTA HID Host callback events */
#define BTA_HH_ENABLE_EVT       0       /* HH enabled */
#define BTA_HH_DISABLE_EVT      1       /* HH disabled */
#define BTA_HH_OPEN_EVT         2       /* connection opened */
#define BTA_HH_CLOSE_EVT        3       /* connection closed */
#define BTA_HH_GET_RPT_EVT      4       /* BTA_HhGetReport callback */
#define BTA_HH_SET_RPT_EVT      5       /* BTA_HhSetReport callback */
#define BTA_HH_GET_PROTO_EVT    6       /* BTA_GetProtoMode callback */
#define BTA_HH_SET_PROTO_EVT    7       /* BTA_HhSetProtoMode callback */
#define BTA_HH_GET_IDLE_EVT     8       /* BTA_HhGetIdle comes callback */
#define BTA_HH_SET_IDLE_EVT     9       /* BTA_HhSetIdle finish callback */
#define BTA_HH_GET_DSCP_EVT     10      /* Get report descriptor */
#define BTA_HH_ADD_DEV_EVT      11      /* Add Device callback */
#define BTA_HH_RMV_DEV_EVT      12      /* remove device finished */
#define BTA_HH_VC_UNPLUG_EVT    13      /* virtually unplugged */
#define BTA_HH_DATA_EVT         15
#define BTA_HH_API_ERR_EVT      16      /* API error is caught */
#define BTA_HH_UPDATE_SCPP_EVT  17       /* update scan paramter complete */

typedef UINT16 tBTA_HH_EVT;

/* application ID(none-zero) for each type of device */
#define BTA_HH_APP_ID_MI            1
#define BTA_HH_APP_ID_KB            2
#define BTA_HH_APP_ID_RMC           3
#define BTA_HH_APP_ID_3DSG          4
#define BTA_HH_APP_ID_JOY           5
#define BTA_HH_APP_ID_GPAD          6
#define BTA_HH_APP_ID_LE            0xff

/* defined the minimum offset */
#define BTA_HH_MIN_OFFSET       (L2CAP_MIN_OFFSET+1)

/* HID_HOST_MAX_DEVICES can not exceed 15 for th design of BTA HH */
#define BTA_HH_IDX_INVALID      0xff
#define BTA_HH_MAX_KNOWN        HID_HOST_MAX_DEVICES

#if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)
/* GATT_MAX_PHY_CHANNEL can not exceed 14 for the design of BTA HH */
#define BTA_HH_LE_MAX_KNOWN     GATT_MAX_PHY_CHANNEL
#define BTA_HH_MAX_DEVICE        (HID_HOST_MAX_DEVICES + GATT_MAX_PHY_CHANNEL)
#else
#define BTA_HH_MAX_DEVICE       HID_HOST_MAX_DEVICES
#endif
/* invalid device handle */
#define BTA_HH_INVALID_HANDLE   0xff

/* type of protocol mode */
#define BTA_HH_PROTO_RPT_MODE                   (0x00)
#define BTA_HH_PROTO_BOOT_MODE                  (0x01)
#define BTA_HH_PROTO_UNKNOWN                    (0xff)
typedef UINT8   tBTA_HH_PROTO_MODE;

enum
{
    BTA_HH_KEYBD_RPT_ID  =               1,
    BTA_HH_MOUSE_RPT_ID
};
typedef UINT8 tBTA_HH_BOOT_RPT_ID;

/* type of devices, bit mask */
#define BTA_HH_DEVT_UNKNOWN      0x00
#define BTA_HH_DEVT_JOS          0x01           /* joy stick */
#define BTA_HH_DEVT_GPD          0x02           /* game pad */
#define BTA_HH_DEVT_RMC          0x03           /* remote control */
#define BTA_HH_DEVT_SED          0x04           /* sensing device */
#define BTA_HH_DEVT_DGT          0x05           /* Digitizer tablet */
#define BTA_HH_DEVT_CDR          0x06           /* card reader */
#define BTA_HH_DEVT_KBD          0x10           /* keyboard */
#define BTA_HH_DEVT_MIC          0x20           /* pointing device */
#define BTA_HH_DEVT_COM          0x30           /* Combo keyboard/pointing */
#define BTA_HH_DEVT_OTHER        0x80
typedef UINT8  tBTA_HH_DEVT;

enum
{
    BTA_HH_OK,
    BTA_HH_HS_HID_NOT_READY,    /* handshake error : device not ready */
    BTA_HH_HS_INVALID_RPT_ID,   /* handshake error : invalid report ID */
    BTA_HH_HS_TRANS_NOT_SPT,    /* handshake error : transaction not spt */
    BTA_HH_HS_INVALID_PARAM,    /* handshake error : invalid paremter */
    BTA_HH_HS_ERROR,            /* handshake error : unspecified HS error */
    BTA_HH_ERR,                 /* general BTA HH error */
    BTA_HH_ERR_SDP,             /* SDP error */
    BTA_HH_ERR_PROTO,           /* SET_Protocol error,
                                    only used in BTA_HH_OPEN_EVT callback */

    BTA_HH_ERR_DB_FULL,         /* device database full error, used in
                                   BTA_HH_OPEN_EVT/BTA_HH_ADD_DEV_EVT */
    BTA_HH_ERR_TOD_UNSPT,       /* type of device not supported */
    BTA_HH_ERR_NO_RES,          /* out of system resources */
    BTA_HH_ERR_AUTH_FAILED,     /* authentication fail */
    BTA_HH_ERR_HDL,
    BTA_HH_ERR_SEC
};
typedef UINT8 tBTA_HH_STATUS;


#define BTA_HH_VIRTUAL_CABLE           HID_VIRTUAL_CABLE
#define BTA_HH_NORMALLY_CONNECTABLE    HID_NORMALLY_CONNECTABLE
#define BTA_HH_RECONN_INIT             HID_RECONN_INIT
#define BTA_HH_SDP_DISABLE             HID_SDP_DISABLE
#define BTA_HH_BATTERY_POWER           HID_BATTERY_POWER
#define BTA_HH_REMOTE_WAKE             HID_REMOTE_WAKE
#define BTA_HH_SUP_TOUT_AVLBL          HID_SUP_TOUT_AVLBL
#define BTA_HH_SEC_REQUIRED             HID_SEC_REQUIRED
typedef UINT16 tBTA_HH_ATTR_MASK;

/* supported type of device and corresponding application ID */
typedef struct
{
    tBTA_HH_DEVT        tod;        /* type of device               */
    UINT8               app_id;     /* corresponding application ID */
}tBTA_HH_SPT_TOD;

/* configuration struct */
typedef struct
{
    UINT8                max_devt_spt; /* max number of types of devices spt */
    tBTA_HH_SPT_TOD     *p_devt_list;  /* supported types of device list     */
    UINT16               sdp_db_size;
}tBTA_HH_CFG;

enum
{
    BTA_HH_RPTT_RESRV,      /* reserved         */
    BTA_HH_RPTT_INPUT,      /* input report     */
    BTA_HH_RPTT_OUTPUT,     /* output report    */
    BTA_HH_RPTT_FEATURE     /* feature report   */
};
typedef UINT8 tBTA_HH_RPT_TYPE;

/* HID_CONTROL operation code used in BTA_HhSendCtrl()
*/
enum
{
    BTA_HH_CTRL_NOP         = 0 + HID_PAR_CONTROL_NOP ,/* mapping from BTE */
    BTA_HH_CTRL_HARD_RESET,                            /* hard reset       */
    BTA_HH_CTRL_SOFT_RESET,                            /* soft reset       */
    BTA_HH_CTRL_SUSPEND,                               /* enter suspend    */
    BTA_HH_CTRL_EXIT_SUSPEND,                          /* exit suspend     */
    BTA_HH_CTRL_VIRTUAL_CABLE_UNPLUG                   /* virtual unplug   */
};
typedef UINT8 tBTA_HH_TRANS_CTRL_TYPE;

typedef tHID_DEV_DSCP_INFO tBTA_HH_DEV_DESCR;

#define BTA_HH_SSR_PARAM_INVALID       HID_SSR_PARAM_INVALID

/* id DI is not existing in remote device, vendor_id in tBTA_HH_DEV_DSCP_INFO will be set to 0xffff */
#define BTA_HH_VENDOR_ID_INVALID       0xffff


/* report descriptor information */
typedef struct
{
    UINT16              vendor_id;      /* vendor ID */
    UINT16              product_id;     /* product ID */
    UINT16              version;        /* version */
    UINT16              ssr_max_latency;    /* SSR max latency, BTA_HH_SSR_PARAM_INVALID if unknown */
    UINT16              ssr_min_tout;       /* SSR min timeout, BTA_HH_SSR_PARAM_INVALID if unknown */
    UINT8               ctry_code;      /*Country Code.*/
#if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)
#define BTA_HH_LE_REMOTE_WAKE       0x01
#define BTA_HH_LE_NORMAL_CONN       0x02

    UINT8               flag;
#endif
    tBTA_HH_DEV_DESCR   descriptor;
}tBTA_HH_DEV_DSCP_INFO;

/* callback event data for BTA_HH_OPEN_EVT */
typedef struct
{
    BD_ADDR         bda;                /* HID device bd address    */
    tBTA_HH_STATUS  status;             /* operation status         */
    UINT8           handle;             /* device handle            */
#if (defined BTA_HH_LE_INCLUDED && BTA_HH_LE_INCLUDED == TRUE)
    BOOLEAN         le_hid;             /* is LE devices? */
    BOOLEAN         scps_supported;     /* scan parameter service supported */
#endif

} tBTA_HH_CONN;

typedef tBTA_HH_CONN tBTA_HH_DEV_INFO;

/* callback event data */
typedef struct
{
    tBTA_HH_STATUS              status;     /* operation status         */
    UINT8                       handle;     /* device handle            */
} tBTA_HH_CBDATA;

enum
{
    BTA_HH_MOD_CTRL_KEY,
    BTA_HH_MOD_SHFT_KEY,
    BTA_HH_MOD_ALT_KEY,
    BTA_HH_MOD_GUI_KEY,
    BTA_HH_MOD_MAX_KEY
};

/* parsed boot mode keyboard report */
typedef struct
{
    UINT8               this_char[6];       /* virtual key code     */
    BOOLEAN             mod_key[BTA_HH_MOD_MAX_KEY];
                                            /* ctrl, shift, Alt, GUI */
                                            /* modifier key: is Shift key pressed */
                                            /* modifier key: is Ctrl key pressed  */
                                            /* modifier key: is Alt key pressed   */
                                            /* modifier key: GUI up/down */
    BOOLEAN             caps_lock;          /* is caps locked       */
    BOOLEAN             num_lock;           /* is Num key pressed   */
} tBTA_HH_KEYBD_RPT;

/* parsed boot mode mouse report */
typedef struct
{
    UINT8               mouse_button;       /* mouse button is clicked   */
    INT8                delta_x;            /* displacement x            */
    INT8                delta_y;            /* displacement y            */
}tBTA_HH_MICE_RPT;

/* parsed Boot report */
typedef struct
{
    tBTA_HH_BOOT_RPT_ID dev_type;           /* type of device report */
    union
    {
        tBTA_HH_KEYBD_RPT   keybd_rpt;      /* keyboard report      */
        tBTA_HH_MICE_RPT    mice_rpt;       /* mouse report         */
    }                   data_rpt;
} tBTA_HH_BOOT_RPT;

/* handshake data */
typedef struct
{
    tBTA_HH_STATUS  status;                 /* handshake status */
    UINT8           handle;                 /* device handle    */
    union
    {
        tBTA_HH_PROTO_MODE      proto_mode; /* GET_PROTO_EVT :protocol mode */
        BT_HDR                  *p_rpt_data;   /* GET_RPT_EVT   : report data  */
        UINT8                   idle_rate;  /* GET_IDLE_EVT  : idle rate    */
    }               rsp_data;

}tBTA_HH_HSDATA;

/* union of data associated with HD callback */
typedef union
{
    tBTA_HH_DEV_INFO        dev_info;           /* BTA_HH_ADD_DEV_EVT, BTA_HH_RMV_DEV_EVT   */
    tBTA_HH_CONN            conn;               /* BTA_HH_OPEN_EVT      */
    tBTA_HH_CBDATA          dev_status;         /* BTA_HH_CLOSE_EVT,
                                                   BTA_HH_SET_PROTO_EVT
                                                   BTA_HH_SET_RPT_EVT
                                                   BTA_HH_SET_IDLE_EVT
                                                   BTA_HH_UPDATE_SCPP_EVT */

    tBTA_HH_STATUS          status;             /* BTA_HH_ENABLE_EVT */
    tBTA_HH_DEV_DSCP_INFO   dscp_info;          /* BTA_HH_GET_DSCP_EVT */
    tBTA_HH_HSDATA          hs_data;            /* GET_ transaction callback
                                                   BTA_HH_GET_RPT_EVT
                                                   BTA_HH_GET_PROTO_EVT
                                                   BTA_HH_GET_IDLE_EVT */
} tBTA_HH;

/* BTA HH callback function */
typedef void (tBTA_HH_CBACK) (tBTA_HH_EVT event, tBTA_HH *p_data);


/*****************************************************************************
**  External Function Declarations
*****************************************************************************/

/*******************************************************************************
**
** Function         BTA_HhRegister
**
** Description      This function enable HID host and registers HID-Host with
**                  lower layers.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhEnable(tBTA_SEC sec_mask, tBTA_HH_CBACK *p_cback);

/*******************************************************************************
**
** Function         BTA_HhDeregister
**
** Description      This function is called when the host is about power down.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhDisable(void);

/*******************************************************************************
**
** Function         BTA_HhOpen
**
** Description      This function is called to start an inquiry and read SDP
**                  record of responding devices; connect to a device if only
**                  one active HID device is found.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhOpen (BD_ADDR dev_bda, tBTA_HH_PROTO_MODE mode,
                        tBTA_SEC sec_mask);

/*******************************************************************************
**
** Function         BTA_HhClose
**
** Description      This function disconnects the device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhClose(UINT8 dev_handle);

/*******************************************************************************
**
** Function         BTA_HhSetProtoMode
**
** Description      This function set the protocol mode at specified HID handle
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhSetProtoMode(UINT8 handle, tBTA_HH_PROTO_MODE t_type);

/*******************************************************************************
**
** Function         BTA_HhGetProtoMode
**
** Description      This function get the protocol mode of a specified HID device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhGetProtoMode(UINT8 dev_handle);
/*******************************************************************************
**
** Function         BTA_HhSetReport
**
** Description      send SET_REPORT to device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhSetReport(UINT8 dev_handle, tBTA_HH_RPT_TYPE r_type,
                            BT_HDR *p_data);

/*******************************************************************************
**
** Function         BTA_HhGetReport
**
** Description      Send a GET_REPORT to HID device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhGetReport(UINT8 dev_handle, tBTA_HH_RPT_TYPE r_type,
                            UINT8 rpt_id, UINT16 buf_size);
/*******************************************************************************
**
** Function         BTA_HhSetIdle
**
** Description      send SET_IDLE to device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhSetIdle(UINT8 dev_handle, UINT16 idle_rate);

/*******************************************************************************
**
** Function         BTA_HhGetIdle
**
** Description      Send a GET_IDLE to HID device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhGetIdle(UINT8 dev_handle);

/*******************************************************************************
**
** Function         BTA_HhSendCtrl
**
** Description      Send HID_CONTROL request to a HID device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhSendCtrl(UINT8 dev_handle,
                           tBTA_HH_TRANS_CTRL_TYPE c_type);

/*******************************************************************************
**
** Function         BTA_HhSetIdle
**
** Description      send SET_IDLE to device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhSetIdle(UINT8 dev_handle, UINT16 idle_rate);


/*******************************************************************************
**
** Function         BTA_HhGetIdle
**
** Description      Send a GET_IDLE from HID device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhGetIdle(UINT8 dev_handle);

/*******************************************************************************
**
** Function         BTA_HhSendData
**
** Description      Send DATA transaction to a HID device.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhSendData(UINT8 dev_handle, BD_ADDR dev_bda, BT_HDR  *p_buf);

/*******************************************************************************
**
** Function         BTA_HhGetDscpInfo
**
** Description      Get report descriptor of the device
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhGetDscpInfo(UINT8 dev_handle);

/*******************************************************************************
** Function         BTA_HhAddDev
**
** Description      Add a virtually cabled device into HID-Host device list
**                  to manage and assign a device handle for future API call,
**                  host applciation call this API at start-up to initialize its
**                  virtually cabled devices.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhAddDev(BD_ADDR bda, tBTA_HH_ATTR_MASK attr_mask,
                         UINT8 sub_class, UINT8 app_id,
                         tBTA_HH_DEV_DSCP_INFO dscp_info);
/*******************************************************************************
**
** Function         BTA_HhRemoveDev
**
** Description      Remove a device from the HID host devices list.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhRemoveDev(UINT8 dev_handle );

/*******************************************************************************
**
**              Parsing Utility Functions
**
*******************************************************************************/
/*******************************************************************************
**
** Function         BTA_HhParseBootRpt
**
** Description      This utility function parse a boot mode report.
**
** Returns          void
**
*******************************************************************************/
extern void BTA_HhParseBootRpt(tBTA_HH_BOOT_RPT *p_data, UINT8 *p_report,
                               UINT16 report_len);

/* test commands */
extern void bta_hh_le_hid_read_rpt_clt_cfg(BD_ADDR bd_addr, UINT8 rpt_id);

#ifdef __cplusplus
}
#endif

#endif  /* BTA_HH_API_H */