esp-idf/examples/bluetooth/bluedroid/classic_bt/a2dp_source/main/bt_app_core.c

132 wiersze
3.5 KiB
C

/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include "freertos/FreeRTOSConfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "bt_app_core.h"
/*********************************
* STATIC FUNCTION DECLARATIONS
********************************/
/* application task handler */
static void bt_app_task_handler(void *arg);
/* message sender for Work queue */
static bool bt_app_send_msg(bt_app_msg_t *msg);
/* handler for dispatched message */
static void bt_app_work_dispatched(bt_app_msg_t *msg);
/*********************************
* STATIC VARIABLE DEFINITIONS
********************************/
static QueueHandle_t s_bt_app_task_queue = NULL;
static TaskHandle_t s_bt_app_task_handle = NULL;
/*********************************
* STATIC FUNCTION DEFINITIONS
********************************/
static bool bt_app_send_msg(bt_app_msg_t *msg)
{
if (msg == NULL) {
return false;
}
if (pdTRUE != xQueueSend(s_bt_app_task_queue, msg, 10 / portTICK_PERIOD_MS)) {
ESP_LOGE(BT_APP_CORE_TAG, "%s xQueue send failed", __func__);
return false;
}
return true;
}
static void bt_app_work_dispatched(bt_app_msg_t *msg)
{
if (msg->cb) {
msg->cb(msg->event, msg->param);
}
}
static void bt_app_task_handler(void *arg)
{
bt_app_msg_t msg;
for (;;) {
/* receive message from work queue and handle it */
if (pdTRUE == xQueueReceive(s_bt_app_task_queue, &msg, (TickType_t)portMAX_DELAY)) {
ESP_LOGD(BT_APP_CORE_TAG, "%s, signal: 0x%x, event: 0x%x", __func__, msg.sig, msg.event);
switch (msg.sig) {
case BT_APP_SIG_WORK_DISPATCH:
bt_app_work_dispatched(&msg);
break;
default:
ESP_LOGW(BT_APP_CORE_TAG, "%s, unhandled signal: %d", __func__, msg.sig);
break;
}
if (msg.param) {
free(msg.param);
}
}
}
}
/*********************************
* EXTERN FUNCTION DEFINITIONS
********************************/
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)
{
ESP_LOGD(BT_APP_CORE_TAG, "%s event: 0x%x, param len: %d", __func__, event, param_len);
bt_app_msg_t msg;
memset(&msg, 0, sizeof(bt_app_msg_t));
msg.sig = BT_APP_SIG_WORK_DISPATCH;
msg.event = event;
msg.cb = p_cback;
if (param_len == 0) {
return bt_app_send_msg(&msg);
} else if (p_params && param_len > 0) {
if ((msg.param = malloc(param_len)) != NULL) {
memcpy(msg.param, p_params, param_len);
/* check if caller has provided a copy callback to do the deep copy */
if (p_copy_cback) {
p_copy_cback(msg.param, p_params, param_len);
}
return bt_app_send_msg(&msg);
}
}
return false;
}
void bt_app_task_start_up(void)
{
s_bt_app_task_queue = xQueueCreate(10, sizeof(bt_app_msg_t));
xTaskCreate(bt_app_task_handler, "BtAppTask", 2048, NULL, 10, &s_bt_app_task_handle);
}
void bt_app_task_shut_down(void)
{
if (s_bt_app_task_handle) {
vTaskDelete(s_bt_app_task_handle);
s_bt_app_task_handle = NULL;
}
if (s_bt_app_task_queue) {
vQueueDelete(s_bt_app_task_queue);
s_bt_app_task_queue = NULL;
}
}