Broadcast Audio Scan Service Server (BASS) API

src/le-audio/gatt-service/broadcast_audio_scan_service_server.h : @text The Broadcast Audio Scan Service is used by servers to expose their status with respect to synchronization to broadcast Audio Streams and associated data, including Broadcast_Codes used to decrypt encrypted broadcast Audio Streams. Clients can use the attributes exposed by servers to observe and/or request changes in server behavior.

To use with your application, add #import <broadcast_audio_scan_service.gatt> to your .gatt file.

// memory for list of these structs is allocated by the application
typedef struct {
    // assigned by client via control point
    bass_source_data_t data;

    uint8_t  update_counter;
    uint8_t  source_id; 
    bool     in_use;

    le_audio_big_encryption_t big_encryption;
    uint8_t  bad_code[16];

    uint16_t bass_receive_state_handle;
    uint16_t bass_receive_state_client_configuration_handle;
    uint16_t bass_receive_state_client_configuration;
} bass_server_source_t;

typedef struct {
    hci_con_handle_t con_handle;
    uint16_t sources_to_notify;

    // used for caching long write
    uint8_t  long_write_buffer[512];
    uint16_t long_write_value_size;
    uint16_t long_write_attribute_handle;
} bass_server_connection_t;

/**
 * @brief Init Broadcast Audio Scan Service Server with ATT DB
 * @param sources_num
 * @param sources
 * @param clients_num
 * @param clients
 */
void broadcast_audio_scan_service_server_init(uint8_t const sources_num, bass_server_source_t * sources, uint8_t const clients_num, bass_server_connection_t * clients);

/**
 * @brief Register packet handler to receive events:
 * - LEAUDIO_SUBEVENT_BASS_SERVER_SCAN_STOPPED
 * - LEAUDIO_SUBEVENT_BASS_SERVER_SCAN_STARTED
 * - LEAUDIO_SUBEVENT_BASS_SERVER_BROADCAST_CODE
 * - LEAUDIO_SUBEVENT_BASS_SERVER_SOURCE_ADDED
 * - LEAUDIO_SUBEVENT_BASS_SERVER_SOURCE_MODIFIED
 * - LEAUDIO_SUBEVENT_BASS_SERVER_SOURCE_DELETED
 * @param packet_handler
 */
void broadcast_audio_scan_service_server_register_packet_handler(btstack_packet_handler_t packet_handler);

/**
 * @brief Set PA state of source.
 * @param source_index
 * @param sync_state
 */
void broadcast_audio_scan_service_server_set_pa_sync_state(uint8_t source_index, le_audio_pa_sync_state_t sync_state);

/**
 * @brief Add source.
 * @param source_data
 * @param source_index
 */
void broadcast_audio_scan_service_server_add_source(const bass_source_data_t *source_data, uint8_t * source_index);

/**
 * @brief Deinit Broadcast Audio Scan Service Server
 */
void broadcast_audio_scan_service_server_deinit(void);