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Bluetooth: Audio: Audio Input Control Service and client

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This commit implements the secondary service
Audio Input Control Service (AICS) server and client.

Signed-off-by: Emil Gydesen <emil.gydesen@nordicsemi.no>
This commit is contained in:
Emil Gydesen 2021-03-02 14:39:18 +01:00 • committed by Anas Nashif
commit 2016509756
9 changed files with 2485 additions and 2 deletions
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132
subsys/bluetooth/audio/aics_internal.h Normal file
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/** @file
* @brief Internal APIs for Bluetooth AICS.
*/
/*
* Copyright (c) 2020 Bose Corporation
* Copyright (c) 2020 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_AICS_INTERNAL_
#define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_AICS_INTERNAL_
#include <zephyr/types.h>
#include <bluetooth/gatt.h>
#if defined(CONFIG_BT_AICS)
#define BT_AICS_MAX_DESC_SIZE CONFIG_BT_AICS_MAX_INPUT_DESCRIPTION_SIZE
#else
#define BT_AICS_MAX_DESC_SIZE 1
#endif /* CONFIG_BT_AICS */
/* AICS opcodes */
#define BT_AICS_OPCODE_SET_GAIN 0x01
#define BT_AICS_OPCODE_UNMUTE 0x02
#define BT_AICS_OPCODE_MUTE 0x03
#define BT_AICS_OPCODE_SET_MANUAL 0x04
#define BT_AICS_OPCODE_SET_AUTO 0x05
/* AICS status */
#define BT_AICS_STATUS_INACTIVE 0x00
#define BT_AICS_STATUS_ACTIVE 0x01
#define BT_AICS_INPUT_MODE_IMMUTABLE(gain_mode) \
((gain_mode) == BT_AICS_MODE_MANUAL_ONLY || (gain_mode) == BT_AICS_MODE_AUTO_ONLY)
#define BT_AICS_INPUT_MODE_SETTABLE(gain_mode) \
((gain_mode) == BT_AICS_MODE_AUTO || (gain_mode) == BT_AICS_MODE_MANUAL)
struct bt_aics_control {
uint8_t opcode;
uint8_t counter;
} __packed;
struct bt_aics_gain_control {
struct bt_aics_control cp;
int8_t gain_setting;
} __packed;
struct bt_aics_client {
uint8_t change_counter;
uint8_t gain_mode;
bool desc_writable;
bool active;
uint16_t start_handle;
uint16_t end_handle;
uint16_t state_handle;
uint16_t gain_handle;
uint16_t type_handle;
uint16_t status_handle;
uint16_t control_handle;
uint16_t desc_handle;
struct bt_gatt_subscribe_params state_sub_params;
struct bt_gatt_subscribe_params status_sub_params;
struct bt_gatt_subscribe_params desc_sub_params;
uint8_t subscribe_cnt;
bool cp_retried;
bool busy;
struct bt_aics_gain_control cp_val;
struct bt_gatt_write_params write_params;
struct bt_gatt_read_params read_params;
struct bt_gatt_discover_params discover_params;
struct bt_aics_cb *cb;
struct bt_conn *conn;
};
struct bt_aics_state {
int8_t gain;
uint8_t mute;
uint8_t gain_mode;
uint8_t change_counter;
} __packed;
struct bt_aics_gain_settings {
uint8_t units;
int8_t minimum;
int8_t maximum;
} __packed;
struct bt_aics_server {
struct bt_aics_state state;
struct bt_aics_gain_settings gain_settings;
bool initialized;
uint8_t type;
uint8_t status;
struct bt_aics *inst;
char description[BT_AICS_MAX_DESC_SIZE];
struct bt_aics_cb *cb;
struct bt_gatt_service *service_p;
};
/* Struct used as a common type for the api */
struct bt_aics {
union {
struct bt_aics_server srv;
struct bt_aics_client cli;
};
};
uint8_t aics_client_notify_handler(struct bt_conn *conn,
struct bt_gatt_subscribe_params *params,
const void *data, uint16_t length);
int bt_aics_client_register(struct bt_aics *inst);
int bt_aics_client_unregister(struct bt_aics *inst);
int bt_aics_client_state_get(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_gain_setting_get(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_type_get(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_status_get(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_unmute(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_mute(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_manual_gain_set(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_automatic_gain_set(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_gain_set(struct bt_conn *conn, struct bt_aics *inst, int8_t gain);
int bt_aics_client_description_get(struct bt_conn *conn, struct bt_aics *inst);
int bt_aics_client_description_set(struct bt_conn *conn, struct bt_aics *inst,
const char *description);
#endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_AICS_INTERNAL_ */