1 /******************************************************************************
2 *
3 * Copyright 2009-2012 Broadcom Corporation
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
19 #ifndef BTIF_HH_H
20 #define BTIF_HH_H
21
22 #include <hardware/bluetooth.h>
23 #include <hardware/bt_hh.h>
24 #include <pthread.h>
25 #include <stdint.h>
26 #include "bta/include/bta_hh_api.h"
27 #include "btu.h"
28 #include "osi/include/fixed_queue.h"
29
30 /*******************************************************************************
31 * Constants & Macros
32 ******************************************************************************/
33
34 #define BTIF_HH_MAX_HID 8
35 #define BTIF_HH_MAX_ADDED_DEV 32
36
37 #define BTIF_HH_MAX_KEYSTATES 3
38 #define BTIF_HH_KEYSTATE_MASK_NUMLOCK 0x01
39 #define BTIF_HH_KEYSTATE_MASK_CAPSLOCK 0x02
40 #define BTIF_HH_KEYSTATE_MASK_SCROLLLOCK 0x04
41
42 #define BTIF_HH_MAX_POLLING_ATTEMPTS 10
43 #define BTIF_HH_POLLING_SLEEP_DURATION_US 5000
44
45 /*******************************************************************************
46 * Type definitions and return values
47 ******************************************************************************/
48
49 typedef enum : unsigned {
50 BTIF_HH_DISABLED = 0,
51 BTIF_HH_ENABLED,
52 BTIF_HH_DISABLING,
53 BTIF_HH_DEV_UNKNOWN,
54 BTIF_HH_DEV_CONNECTING,
55 BTIF_HH_DEV_CONNECTED,
56 BTIF_HH_DEV_DISCONNECTED
57 } BTIF_HH_STATUS;
58
59 #define CASE_RETURN_TEXT(code) \
60 case code: \
61 return #code
62
btif_hh_status_text(const BTIF_HH_STATUS & status)63 inline std::string btif_hh_status_text(const BTIF_HH_STATUS& status) {
64 switch (status) {
65 CASE_RETURN_TEXT(BTIF_HH_DISABLED);
66 CASE_RETURN_TEXT(BTIF_HH_ENABLED);
67 CASE_RETURN_TEXT(BTIF_HH_DISABLING);
68 CASE_RETURN_TEXT(BTIF_HH_DEV_UNKNOWN);
69 CASE_RETURN_TEXT(BTIF_HH_DEV_CONNECTING);
70 CASE_RETURN_TEXT(BTIF_HH_DEV_CONNECTED);
71 CASE_RETURN_TEXT(BTIF_HH_DEV_DISCONNECTED);
72 default:
73 return std::string("UNKNOWN[%hhu]", status);
74 }
75 }
76 #undef CASE_RETURN_TEXT
77
78 // Shared with uhid polling thread
79 typedef struct {
80 bthh_connection_state_t dev_status;
81 uint8_t dev_handle;
82 RawAddress bd_addr;
83 tBTA_HH_ATTR_MASK attr_mask;
84 uint8_t sub_class;
85 uint8_t app_id;
86 int fd;
87 bool ready_for_data;
88 pthread_t hh_poll_thread_id;
89 pid_t pid{-1};
90 uint8_t hh_keep_polling;
91 alarm_t* vup_timer;
92 fixed_queue_t* get_rpt_id_queue;
93 uint8_t get_rpt_snt;
94 bool local_vup; // Indicated locally initiated VUP
95 } btif_hh_device_t;
96
97 /* Control block to maintain properties of devices */
98 typedef struct {
99 uint8_t dev_handle;
100 RawAddress bd_addr;
101 tBTA_HH_ATTR_MASK attr_mask;
102 } btif_hh_added_device_t;
103
104 /**
105 * BTIF-HH control block to maintain added devices and currently
106 * connected hid devices
107 */
108 typedef struct {
109 BTIF_HH_STATUS status;
110 btif_hh_device_t devices[BTIF_HH_MAX_HID];
111 uint32_t device_num;
112 btif_hh_added_device_t added_devices[BTIF_HH_MAX_ADDED_DEV];
113 btif_hh_device_t* p_curr_dev;
114 bool service_dereg_active;
115 RawAddress pending_conn_address;
116 } btif_hh_cb_t;
117
118 /*******************************************************************************
119 * Functions
120 ******************************************************************************/
121
122 extern btif_hh_cb_t btif_hh_cb;
123
124 extern btif_hh_device_t* btif_hh_find_connected_dev_by_handle(uint8_t handle);
125 extern void btif_hh_remove_device(RawAddress bd_addr);
126 extern bool btif_hh_add_added_dev(const RawAddress& bda,
127 tBTA_HH_ATTR_MASK attr_mask);
128 extern bt_status_t btif_hh_virtual_unplug(const RawAddress* bd_addr);
129 extern void btif_hh_disconnect(RawAddress* bd_addr);
130 extern void btif_hh_setreport(btif_hh_device_t* p_dev,
131 bthh_report_type_t r_type, uint16_t size,
132 uint8_t* report);
133 extern void btif_hh_senddata(btif_hh_device_t* p_dev, uint16_t size,
134 uint8_t* report);
135 extern void btif_hh_getreport(btif_hh_device_t* p_dev,
136 bthh_report_type_t r_type, uint8_t reportId,
137 uint16_t bufferSize);
138 extern void btif_hh_service_registration(bool enable);
139
140 #endif
141