unicast_client.h

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/*
 * Copyright (c) 2023 Nordic Semiconductor ASA
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
 
#ifndef _UNICAST_CLIENT_H_
#define _UNICAST_CLIENT_H_
 
#include "bt_le_audio_tx.h"
 
#include <zephyr/bluetooth/audio/audio.h>
#include <audio_defines.h>
 
enum unicast_discover_dir {
        UNICAST_SERVER_SINK = BT_AUDIO_DIR_SINK,
        UNICAST_SERVER_SOURCE = BT_AUDIO_DIR_SOURCE,
        UNICAST_SERVER_BIDIR = (BT_AUDIO_DIR_SINK | BT_AUDIO_DIR_SOURCE)
};
 
#if CONFIG_BT_BAP_UNICAST_16_2_1
#define BT_BAP_LC3_UNICAST_PRESET_NRF_AUDIO_SINK                                                   \
        BT_BAP_LC3_UNICAST_PRESET_16_2_1(BT_AUDIO_LOCATION_FRONT_LEFT,                             \
                                         BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED)
 
#define BT_BAP_LC3_UNICAST_PRESET_NRF_AUDIO_SOURCE                                                 \
        BT_BAP_LC3_UNICAST_PRESET_16_2_1(BT_AUDIO_LOCATION_FRONT_LEFT,                             \
                                         BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED)
 
#elif CONFIG_BT_BAP_UNICAST_24_2_1
#define BT_BAP_LC3_UNICAST_PRESET_NRF_AUDIO_SINK                                                   \
        BT_BAP_LC3_UNICAST_PRESET_24_2_1(BT_AUDIO_LOCATION_FRONT_LEFT,                             \
                                         BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED)
 
#define BT_BAP_LC3_UNICAST_PRESET_NRF_AUDIO_SOURCE                                                 \
        BT_BAP_LC3_UNICAST_PRESET_24_2_1(BT_AUDIO_LOCATION_FRONT_LEFT,                             \
                                         BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED)
#elif CONFIG_BT_BAP_UNICAST_48_4_1
#define BT_BAP_LC3_UNICAST_PRESET_NRF_AUDIO_SINK                                                   \
        BT_BAP_LC3_UNICAST_PRESET_48_4_1(BT_AUDIO_LOCATION_ANY, BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED)
 
#define BT_BAP_LC3_UNICAST_PRESET_NRF_AUDIO_SOURCE                                                 \
        BT_BAP_LC3_UNICAST_PRESET_48_4_1(BT_AUDIO_LOCATION_ANY, BT_AUDIO_CONTEXT_TYPE_UNSPECIFIED)
#else
#error Unsupported LC3 codec preset for unicast
#endif /* CONFIG_BT_BAP_UNICAST_16_2_1 */
 
int unicast_client_config_get(struct bt_bap_stream *stream, uint32_t *bitrate,
                              uint32_t *sampling_rate_hz);
 
int unicast_client_locations_get(uint32_t *locations, enum bt_audio_dir dir);
 
int unicast_client_discover(struct bt_conn *conn, enum unicast_discover_dir dir);
 
void unicast_client_conn_disconnected(struct bt_conn *conn);
 
int unicast_client_start(uint8_t cig_index);
 
int unicast_client_stop(uint8_t cig_index);
 
int unicast_client_send(struct net_buf const *const audio_frame, uint8_t cig_index);
 
int unicast_client_disable(uint8_t cig_index);
 
int unicast_client_enable(uint8_t cig_index, le_audio_receive_cb recv_cb);
 
#endif /* _UNICAST_CLIENT_H_ */