| /****************************************************************************** |
| * |
| * Copyright 2003-2012 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. |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * This file contains the GATT client utility function. |
| * |
| ******************************************************************************/ |
| |
| #include "bt_target.h" |
| |
| #include <string.h> |
| |
| #include "bt_common.h" |
| #include "bta_gatts_int.h" |
| #include "bta_sys.h" |
| #include "utl.h" |
| |
| /******************************************************************************* |
| * |
| * Function bta_gatts_alloc_srvc_cb |
| * |
| * Description allocate a service control block. |
| * |
| * Returns pointer to the control block, or otherwise NULL when failed. |
| * |
| ******************************************************************************/ |
| uint8_t bta_gatts_alloc_srvc_cb(tBTA_GATTS_CB* p_cb, uint8_t rcb_idx) { |
| uint8_t i; |
| |
| for (i = 0; i < BTA_GATTS_MAX_SRVC_NUM; i++) { |
| if (!p_cb->srvc_cb[i].in_use) { |
| p_cb->srvc_cb[i].in_use = true; |
| p_cb->srvc_cb[i].rcb_idx = rcb_idx; |
| return i; |
| } |
| } |
| return BTA_GATTS_INVALID_APP; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_gatts_find_app_rcb_by_app_if |
| * |
| * Description find the index of the application control block by app ID. |
| * |
| * Returns pointer to the control block if success, otherwise NULL |
| * |
| ******************************************************************************/ |
| tBTA_GATTS_RCB* bta_gatts_find_app_rcb_by_app_if(tGATT_IF server_if) { |
| uint8_t i; |
| tBTA_GATTS_RCB* p_reg; |
| |
| for (i = 0, p_reg = bta_gatts_cb.rcb; i < BTA_GATTS_MAX_APP_NUM; |
| i++, p_reg++) { |
| if (p_reg->in_use && p_reg->gatt_if == server_if) return p_reg; |
| } |
| return NULL; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_gatts_find_app_rcb_idx_by_app_if |
| * |
| * Description find the index of the application control block by app ID. |
| * |
| * Returns index of the control block, or BTA_GATTS_INVALID_APP if |
| * failed. |
| * |
| ******************************************************************************/ |
| |
| uint8_t bta_gatts_find_app_rcb_idx_by_app_if(tBTA_GATTS_CB* p_cb, |
| tGATT_IF server_if) { |
| uint8_t i; |
| |
| for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i++) { |
| if (p_cb->rcb[i].in_use && p_cb->rcb[i].gatt_if == server_if) return i; |
| } |
| return BTA_GATTS_INVALID_APP; |
| } |
| /******************************************************************************* |
| * |
| * Function bta_gatts_find_srvc_cb_by_srvc_id |
| * |
| * Description find the service control block by service ID. |
| * |
| * Returns pointer to the rcb. |
| * |
| ******************************************************************************/ |
| tBTA_GATTS_SRVC_CB* bta_gatts_find_srvc_cb_by_srvc_id(tBTA_GATTS_CB* p_cb, |
| uint16_t service_id) { |
| uint8_t i; |
| VLOG(1) << __func__ << ": service_id=" << +service_id; |
| for (i = 0; i < BTA_GATTS_MAX_SRVC_NUM; i++) { |
| if (p_cb->srvc_cb[i].in_use && p_cb->srvc_cb[i].service_id == service_id) { |
| VLOG(1) << __func__ << ": found service cb index=" << +i; |
| return &p_cb->srvc_cb[i]; |
| } |
| } |
| return NULL; |
| } |
| /******************************************************************************* |
| * |
| * Function bta_gatts_find_srvc_cb_by_attr_id |
| * |
| * Description find the service control block by attribute ID. |
| * |
| * Returns pointer to the rcb. |
| * |
| ******************************************************************************/ |
| tBTA_GATTS_SRVC_CB* bta_gatts_find_srvc_cb_by_attr_id(tBTA_GATTS_CB* p_cb, |
| uint16_t attr_id) { |
| uint8_t i; |
| |
| for (i = 0; i < (BTA_GATTS_MAX_SRVC_NUM); i++) { |
| if (/* middle service */ |
| (i < (BTA_GATTS_MAX_SRVC_NUM - 1) && p_cb->srvc_cb[i].in_use && |
| p_cb->srvc_cb[i + 1].in_use && |
| attr_id >= p_cb->srvc_cb[i].service_id && |
| attr_id < p_cb->srvc_cb[i + 1].service_id) || |
| /* last active service */ |
| (i < (BTA_GATTS_MAX_SRVC_NUM - 1) && p_cb->srvc_cb[i].in_use && |
| !p_cb->srvc_cb[i + 1].in_use && |
| attr_id >= p_cb->srvc_cb[i].service_id) || |
| /* last service incb */ |
| (i == (BTA_GATTS_MAX_SRVC_NUM - 1) && |
| attr_id >= p_cb->srvc_cb[i].service_id)) { |
| return &p_cb->srvc_cb[i]; |
| } |
| } |
| return NULL; |
| } |