bt-oal/hardware/bt_hd.h

   1 /*
   2  * Copyright (C) 2012 The Android Open Source Project
   3  * Copyright (C) 2019 Samsung Electronics Co., Ltd. All rights reserved.
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #ifndef ANDROID_INCLUDE_BT_HD_H
  19 #define ANDROID_INCLUDE_BT_HD_H
  20
  21 #include <stdint.h>
  22
  23 __BEGIN_DECLS
  24
  25 /* HID Device connection states */
  26 typedef enum {
  27         BTHD_CONN_STATE_CONNECTED = 0,
  28         BTHD_CONN_STATE_CONNECTING,
  29         BTHD_CONN_STATE_DISCONNECTED,
  30         BTHD_CONN_STATE_DISCONNECTING,
  31         BTHD_CONN_STATE_UNKNOWN
  32 } bthd_connection_state_t;
  33
  34 /** Callback for connection state change.
  35  *  state will have one of the values from bthd_connection_state_t
  36  */
  37 typedef void (*bthd_connection_state_callback)(bt_bdaddr_t *bd_addr, bthd_connection_state_t state);
  38
  39 /** BT-HD callback structure. */
  40 typedef struct {
  41         /** set to sizeof(BtHdCallbacks) */
  42         size_t      size;
  43         bthd_connection_state_callback  connection_state_cb;
  44 } bthd_callbacks_t;
  45
  46 /** Represents the standard BT-HD interface. */
  47 typedef struct {
  48
  49         /** set to sizeof(BtHdInterface) */
  50         size_t          size;
  51
  52         /**
  53          * Register the BtHd callbacks
  54          */
  55         bt_status_t (*init)(bthd_callbacks_t* callbacks);
  56
  57         /** Closes the interface. */
  58         void (*cleanup)(void);
  59
  60 } bthd_interface_t;
  61 __END_DECLS
  62
  63 #endif /* ANDROID_INCLUDE_BT_HD_H */