system/btif/co/bta_gatts_co.cc

/******************************************************************************
 *
 *  Copyright 2009-2013 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.
 *
 ******************************************************************************/

#include <stdlib.h>
#include <string.h>

#include "bta_api.h"
#include "btif_util.h"
#include "osi/include/osi.h"
#include "stack/include/gatt_api.h"
#include "types/raw_address.h"

/*****************************************************************************
 *  Local type definitions
 ****************************************************************************/

#define BTIF_GATTS_MAX_SRV_CHG_CLT_SIZE 50

typedef struct {
  bool enable;
  uint8_t num_clients;
  tGATTS_SRV_CHG srv_chg[BTIF_GATTS_MAX_SRV_CHG_CLT_SIZE];
} __attribute__((packed)) btif_gatts_srv_chg_cb_t;

/*****************************************************************************
 *  Static variables
 ****************************************************************************/

static btif_gatts_srv_chg_cb_t btif_gatts_srv_chg_cb;

/*****************************************************************************
 *  Static functions
 ****************************************************************************/

static void btif_gatts_check_init(void) {
  btif_gatts_srv_chg_cb_t* p_cb = &btif_gatts_srv_chg_cb;

  if (!p_cb->enable) {
    memset(p_cb, 0, sizeof(btif_gatts_srv_chg_cb_t));
    p_cb->enable = true;
  }
}

/*****************************************************************************
 *  Externally called functions
 ****************************************************************************/

void btif_gatts_add_bonded_dev_from_nv(const RawAddress& bda) {
  btif_gatts_srv_chg_cb_t* p_cb = &btif_gatts_srv_chg_cb;
  bool found = false;
  uint8_t i;

  btif_gatts_check_init();

  for (i = 0; i != p_cb->num_clients; ++i) {
    if (p_cb->srv_chg[i].bda == bda) {
      found = true;
      break;
    }
  }

  if (!found) {
    if (p_cb->num_clients < BTIF_GATTS_MAX_SRV_CHG_CLT_SIZE) {
      p_cb->srv_chg[p_cb->num_clients].bda = bda;
      p_cb->srv_chg[p_cb->num_clients].srv_changed = false;
      p_cb->num_clients++;
    }
  }
}