1 /****************************************************************************** 2 * 3 * Copyright 2014 The Android Open Source Project 4 * Copyright 2009-2012 Broadcom Corporation 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at: 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 * 18 ******************************************************************************/ 19 20 /******************************************************************************* 21 * 22 * Filename: btif_mce.c 23 * 24 * Description: Message Access Profile (MCE role) Bluetooth Interface 25 * 26 * 27 ******************************************************************************/ 28 29 #define LOG_TAG "bt_btif_mce" 30 31 #include <stdlib.h> 32 #include <string.h> 33 34 #include <hardware/bluetooth.h> 35 #include <hardware/bt_mce.h> 36 37 #include "bt_types.h" 38 #include "bta_api.h" 39 #include "bta_mce_api.h" 40 #include "btif_common.h" 41 #include "btif_util.h" 42 43 /***************************************************************************** 44 * Static variables 45 *****************************************************************************/ 46 47 static btmce_callbacks_t* bt_mce_callbacks = NULL; 48 49 static void btif_mce_mas_discovery_comp_evt(uint16_t event, char* p_param) { 50 tBTA_MCE_MAS_DISCOVERY_COMP* evt_data = (tBTA_MCE_MAS_DISCOVERY_COMP*)p_param; 51 btmce_mas_instance_t insts[BTA_MCE_MAX_MAS_INSTANCES]; 52 int i; 53 54 BTIF_TRACE_EVENT("%s: event = %d", __func__, event); 55 56 if (event != BTA_MCE_MAS_DISCOVERY_COMP_EVT) return; 57 58 for (i = 0; i < evt_data->num_mas; i++) { 59 insts[i].id = evt_data->mas[i].instance_id; 60 insts[i].scn = evt_data->mas[i].scn; 61 insts[i].msg_types = evt_data->mas[i].msg_type; 62 insts[i].p_name = evt_data->mas[i].p_srv_name; 63 } 64 65 RawAddress addr = evt_data->remote_addr; 66 HAL_CBACK(bt_mce_callbacks, remote_mas_instances_cb, 67 (bt_status_t)evt_data->status, &addr, evt_data->num_mas, insts); 68 } 69 70 static void mas_discovery_comp_copy_cb(uint16_t event, char* p_dest, 71 char* p_src) { 72 tBTA_MCE_MAS_DISCOVERY_COMP* p_dest_data = 73 (tBTA_MCE_MAS_DISCOVERY_COMP*)p_dest; 74 tBTA_MCE_MAS_DISCOVERY_COMP* p_src_data = (tBTA_MCE_MAS_DISCOVERY_COMP*)p_src; 75 char* p_dest_str; 76 int i; 77 78 if (!p_src) return; 79 80 if (event != BTA_MCE_MAS_DISCOVERY_COMP_EVT) return; 81 82 maybe_non_aligned_memcpy(p_dest_data, p_src_data, sizeof(*p_src_data)); 83 84 p_dest_str = p_dest + sizeof(tBTA_MCE_MAS_DISCOVERY_COMP); 85 86 for (i = 0; i < p_src_data->num_mas; i++) { 87 p_dest_data->mas[i].p_srv_name = p_dest_str; 88 memcpy(p_dest_str, p_src_data->mas[i].p_srv_name, 89 p_src_data->mas[i].srv_name_len); 90 p_dest_str += p_src_data->mas[i].srv_name_len; 91 *(p_dest_str++) = '\0'; 92 } 93 } 94 95 static void mce_dm_cback(tBTA_MCE_EVT event, tBTA_MCE* p_data, 96 void* user_data) { 97 switch (event) { 98 case BTA_MCE_MAS_DISCOVERY_COMP_EVT: { 99 int i; 100 uint16_t param_len = sizeof(tBTA_MCE); 101 102 /* include space for all p_srv_name copies including null-termination */ 103 for (i = 0; i < p_data->mas_disc_comp.num_mas; i++) 104 param_len += (p_data->mas_disc_comp.mas[i].srv_name_len + 1); 105 106 /* need to deepy copy p_srv_name and null-terminate */ 107 btif_transfer_context(btif_mce_mas_discovery_comp_evt, event, 108 (char*)p_data, param_len, 109 mas_discovery_comp_copy_cb); 110 111 break; 112 } 113 } 114 } 115 116 static bt_status_t init(btmce_callbacks_t* callbacks) { 117 BTIF_TRACE_EVENT("%s", __func__); 118 119 bt_mce_callbacks = callbacks; 120 121 btif_enable_service(BTA_MAP_SERVICE_ID); 122 123 return BT_STATUS_SUCCESS; 124 } 125 126 static bt_status_t get_remote_mas_instances(RawAddress* bd_addr) { 127 VLOG(2) << __func__ << ": remote_addr=" << bd_addr; 128 129 BTA_MceGetRemoteMasInstances(*bd_addr); 130 131 return BT_STATUS_SUCCESS; 132 } 133 134 static const btmce_interface_t mce_if = { 135 sizeof(btmce_interface_t), init, get_remote_mas_instances, 136 }; 137 138 const btmce_interface_t* btif_mce_get_interface(void) { 139 BTIF_TRACE_EVENT("%s", __func__); 140 return &mce_if; 141 } 142 143 /******************************************************************************* 144 * 145 * Function btif_mce_execute_service 146 * 147 * Description Initializes/Shuts down the service 148 * 149 * Returns BT_STATUS_SUCCESS on success, BT_STATUS_FAIL otherwise 150 * 151 ******************************************************************************/ 152 bt_status_t btif_mce_execute_service(bool b_enable) { 153 BTIF_TRACE_EVENT("%s enable:%d", __func__, b_enable); 154 155 if (b_enable) { 156 BTA_MceEnable(mce_dm_cback); 157 } else { 158 /* This is called on BT disable so no need to extra cleanup */ 159 } 160 return BT_STATUS_SUCCESS; 161 } 162
