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/******************************************************************************
*
* 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 <cstdint>
#include "bt_target.h" // Must be first to define build configuration
#include "bta/gatt/bta_gatts_int.h"
#include <base/logging.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;
}
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