esp-idf/examples/bluetooth/bluedroid/classic_bt/a2dp_sink/main/bt_app_core.h

/*
 * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Unlicense OR CC0-1.0
 */

#ifndef __BT_APP_CORE_H__
#define __BT_APP_CORE_H__

#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>

#define BT_APP_CORE_TAG                   "BT_APP_CORE"

#define BT_APP_SIG_WORK_DISPATCH          (0x01)

/**
 * @brief     handler for the dispatched work
 */
typedef void (* bt_app_cb_t) (uint16_t event, void *param);

/* message to be sent */
typedef struct {
    uint16_t             sig;      /*!< signal to bt_app_task */
    uint16_t             event;    /*!< message event id */
    bt_app_cb_t          cb;       /*!< context switch callback */
    void                 *param;   /*!< parameter area needs to be last */
} bt_app_msg_t;

/**
 * @brief     parameter deep-copy function to be customized
 */
typedef void (* bt_app_copy_cb_t) (bt_app_msg_t *msg, void *p_dest, void *p_src);

/**
 * @brief     work dispatcher for the application task
 */
bool bt_app_work_dispatch(bt_app_cb_t p_cback, uint16_t event, void *p_params, int param_len, bt_app_copy_cb_t p_copy_cback);

void bt_app_task_start_up(void);

void bt_app_task_shut_down(void);

void bt_i2s_task_start_up(void);

void bt_i2s_task_shut_down(void);

size_t write_ringbuf(const uint8_t *data, size_t size);

#endif /* __BT_APP_CORE_H__ */