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/**
* @file
* @brief Internal Header for Bluetooth Volume Control Service (VCS).
*
* Copyright (c) 2020 Bose Corporation
* Copyright (c) 2020-2022 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_VCP_INTERNAL_
#define ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_VCP_INTERNAL_
#include <stdbool.h>
#include <stdint.h>
#include <zephyr/autoconf.h>
#include <zephyr/bluetooth/conn.h>
#include <zephyr/bluetooth/gatt.h>
#include <zephyr/bluetooth/uuid.h>
/* VCS opcodes */
#define BT_VCP_OPCODE_REL_VOL_DOWN 0x00
#define BT_VCP_OPCODE_REL_VOL_UP 0x01
#define BT_VCP_OPCODE_UNMUTE_REL_VOL_DOWN 0x02
#define BT_VCP_OPCODE_UNMUTE_REL_VOL_UP 0x03
#define BT_VCP_OPCODE_SET_ABS_VOL 0x04
#define BT_VCP_OPCODE_UNMUTE 0x05
#define BT_VCP_OPCODE_MUTE 0x06
struct vcs_state {
uint8_t volume;
uint8_t mute;
uint8_t change_counter;
} __packed;
struct vcs_control {
uint8_t opcode;
uint8_t counter;
} __packed;
struct vcs_control_vol {
struct vcs_control cp;
uint8_t volume;
} __packed;
struct bt_vcp_vol_ctlr {
struct vcs_state state;
uint8_t flags;
uint16_t start_handle;
uint16_t end_handle;
uint16_t state_handle;
uint16_t control_handle;
uint16_t flag_handle;
struct bt_gatt_subscribe_params state_sub_params;
struct bt_gatt_discover_params state_sub_disc_params;
struct bt_gatt_subscribe_params flag_sub_params;
struct bt_gatt_discover_params flag_sub_disc_params;
bool cp_retried;
bool busy;
struct vcs_control_vol 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_uuid_16 uuid;
struct bt_conn *conn;
#if defined(CONFIG_BT_VCP_VOL_CTLR_VOCS)
uint8_t vocs_inst_cnt;
struct bt_vocs *vocs[CONFIG_BT_VCP_VOL_CTLR_MAX_VOCS_INST];
#endif /* CONFIG_BT_VCP_VOL_CTLR_VOCS */
#if defined(CONFIG_BT_VCP_VOL_CTLR_AICS)
uint8_t aics_inst_cnt;
struct bt_aics *aics[CONFIG_BT_VCP_VOL_CTLR_MAX_AICS_INST];
#endif /* CONFIG_BT_VCP_VOL_CTLR_AICS */
};
#endif /* ZEPHYR_INCLUDE_BLUETOOTH_AUDIO_VCP_INTERNAL_*/