e45830893f
The CCP API for the Call Control Profile works on top of the TBS API, and will eventually replace parts of the TBS API. Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
/* Bluetooth CCP - Call Control Profile Call Control Server
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*
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* Copyright (c) 2024 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <errno.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <zephyr/autoconf.h>
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#include <zephyr/bluetooth/audio/tbs.h>
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#include <zephyr/logging/log.h>
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#include <zephyr/sys/check.h>
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#include <zephyr/sys/util.h>
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LOG_MODULE_REGISTER(bt_ccp_call_control_server, CONFIG_BT_CCP_CALL_CONTROL_SERVER_LOG_LEVEL);
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/* A service instance can either be a GTBS or a TBS instance */
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struct bt_ccp_call_control_server_bearer {
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uint8_t tbs_index;
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bool registered;
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};
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static struct bt_ccp_call_control_server_bearer
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bearers[CONFIG_BT_CCP_CALL_CONTROL_SERVER_BEARER_COUNT];
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static struct bt_ccp_call_control_server_bearer *get_free_bearer(void)
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{
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for (size_t i = 0; i < ARRAY_SIZE(bearers); i++) {
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if (!bearers[i].registered) {
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return &bearers[i];
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}
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}
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return NULL;
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}
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int bt_ccp_call_control_server_register_bearer(const struct bt_tbs_register_param *param,
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struct bt_ccp_call_control_server_bearer **bearer)
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{
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struct bt_ccp_call_control_server_bearer *free_bearer;
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int ret;
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CHECKIF(bearer == NULL) {
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LOG_DBG("bearer is NULL");
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return -EINVAL;
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}
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free_bearer = get_free_bearer();
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if (free_bearer == NULL) {
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return -ENOMEM;
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}
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ret = bt_tbs_register_bearer(param);
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if (ret < 0) {
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LOG_DBG("Failed to register TBS bearer: %d", ret);
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/* Return known errors */
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if (ret == -EINVAL || ret == -EALREADY || ret == -EAGAIN || ret == -ENOMEM) {
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return ret;
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}
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return -ENOEXEC;
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}
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free_bearer->registered = true;
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free_bearer->tbs_index = (uint8_t)ret;
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*bearer = free_bearer;
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return 0;
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}
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int bt_ccp_call_control_server_unregister_bearer(struct bt_ccp_call_control_server_bearer *bearer)
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{
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int err;
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CHECKIF(bearer == NULL) {
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LOG_DBG("bearer is NULL");
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return -EINVAL;
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}
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if (!bearer->registered) {
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LOG_DBG("Bearer %p already unregistered", bearer);
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return -EALREADY;
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}
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err = bt_tbs_unregister_bearer(bearer->tbs_index);
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if (err != 0) {
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/* Return known errors */
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if (err == -EINVAL || err == -EALREADY) {
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return err;
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}
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return -ENOEXEC;
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}
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bearer->registered = false;
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return 0;
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}
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