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/*
* SPDX-FileCopyrightText: 2017-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "sys/queue.h"
#include "esp_private/esp_hidh_private.h"
#include "bt_hidh.h"
#include "ble_hidh.h"
#include <string.h>
#include <stdbool.h>
#include "esp_event.h"
#include "esp_check.h"
#if CONFIG_BT_HID_HOST_ENABLED
#include "esp_hidh_api.h"
#endif /* CONFIG_BT_HID_HOST_ENABLED */
ESP_EVENT_DEFINE_BASE(ESP_HIDH_EVENTS);
#define ESP_HIDH_DELAY_FREE_TO 100000 // us
static const char *TAG = "ESP_HIDH";
static TAILQ_HEAD(esp_hidh_dev_head_s, esp_hidh_dev_s) s_esp_hidh_devices;
static SemaphoreHandle_t s_esp_hidh_devices_semaphore = NULL;
static esp_event_loop_handle_t s_esp_hidh_event_loop_h;
static esp_event_handler_t s_event_callback;
static inline void lock_devices(void)
{
if (s_esp_hidh_devices_semaphore != NULL) {
xSemaphoreTake(s_esp_hidh_devices_semaphore, portMAX_DELAY);
}
}
static inline void unlock_devices(void)
{
if (s_esp_hidh_devices_semaphore != NULL) {
xSemaphoreGive(s_esp_hidh_devices_semaphore);
}
}
/*
* Public Functions
* */
bool esp_hidh_dev_exists(esp_hidh_dev_t *dev)
{
if (dev == NULL) {
return false;
}
esp_hidh_dev_t * d = NULL;
lock_devices();
TAILQ_FOREACH(d, &s_esp_hidh_devices, devices) {
if (d == dev) {
unlock_devices();
return true;
}
}
unlock_devices();
return false;
}
static void esp_hidh_event_handler_wrapper(void *event_handler_arg, esp_event_base_t event_base, int32_t event_id,
void *event_data)
{
esp_hidh_preprocess_event_handler(event_handler_arg, event_base, event_id, event_data);
if (s_event_callback) {
s_event_callback(event_handler_arg, event_base, event_id, event_data);
}
esp_hidh_postprocess_event_handler(event_handler_arg, event_base, event_id, event_data);
}
esp_err_t esp_hidh_init(const esp_hidh_config_t *config)
{
esp_err_t ret = ESP_OK;
ESP_RETURN_ON_FALSE(config, ESP_ERR_INVALID_ARG, TAG, "Config is NULL");
ESP_RETURN_ON_FALSE(!s_esp_hidh_devices_semaphore, ESP_ERR_INVALID_STATE, TAG, "Already initialized");
TAILQ_INIT(&s_esp_hidh_devices);
s_event_callback = config->callback;
const esp_event_loop_args_t event_task_args = {
.queue_size = 5,
.task_name = "esp_hidh_events",
.task_priority = uxTaskPriorityGet(NULL),
.task_stack_size = config->event_stack_size > 0 ? config->event_stack_size : 4096,
.task_core_id = tskNO_AFFINITY
};
esp_event_loop_create(&event_task_args, &s_esp_hidh_event_loop_h);
s_esp_hidh_devices_semaphore = xSemaphoreCreateMutex();
ESP_GOTO_ON_FALSE(s_esp_hidh_devices_semaphore && s_esp_hidh_event_loop_h,
ESP_ERR_NO_MEM, alloc_fail, TAG, "Allocation failed");
ESP_GOTO_ON_ERROR(
esp_event_handler_register_with(s_esp_hidh_event_loop_h, ESP_HIDH_EVENTS, ESP_EVENT_ANY_ID,
esp_hidh_event_handler_wrapper, config->callback_arg),
alloc_fail, TAG, "event_loop register failed!");
// BT and BLE are natively supported by esp_hid.
// For USB support you must initialize it manually after esp_hidh_init()
#if CONFIG_BT_HID_HOST_ENABLED
ESP_GOTO_ON_ERROR(
esp_bt_hidh_init(config),
alloc_fail, TAG, "BT HIDH init failed");
#endif /* CONFIG_BT_HID_HOST_ENABLED */
#if CONFIG_GATTC_ENABLE || CONFIG_BT_NIMBLE_ENABLED
ESP_GOTO_ON_ERROR(
esp_ble_hidh_init(config),
bt_fail, TAG, "BLE HIDH init failed");
#endif /* CONFIG_GATTC_ENABLE */
return ret;
#if CONFIG_GATTC_ENABLE || CONFIG_BT_NIMBLE_ENABLED
bt_fail:
#if CONFIG_BT_HID_HOST_ENABLED
esp_bt_hidh_deinit();
#endif /* CONFIG_BT_HID_HOST_ENABLED */
#endif
alloc_fail:
if (s_esp_hidh_devices_semaphore) {
vSemaphoreDelete(s_esp_hidh_devices_semaphore);
s_esp_hidh_devices_semaphore = NULL;
}
if (s_esp_hidh_event_loop_h) {
esp_event_loop_delete(s_esp_hidh_event_loop_h);
s_esp_hidh_event_loop_h = NULL;
}
return ret;
}
esp_event_loop_handle_t esp_hidh_get_event_loop(void)
{
return s_esp_hidh_event_loop_h;
}
esp_err_t esp_hidh_deinit(void)
{
esp_err_t ret = ESP_OK;
ESP_RETURN_ON_FALSE(s_esp_hidh_devices_semaphore, ESP_ERR_INVALID_STATE, TAG, "Already deinitialized");
ESP_RETURN_ON_FALSE(TAILQ_EMPTY(&s_esp_hidh_devices), ESP_ERR_INVALID_STATE, TAG, "Please disconnect all devices first!");
#if CONFIG_BT_HID_HOST_ENABLED
ESP_RETURN_ON_ERROR(
esp_bt_hidh_deinit(),
TAG, "BT HIDH deinit failed");
#endif /* CONFIG_BT_HID_HOST_ENABLED */
#if CONFIG_GATTC_ENABLE || CONFIG_BT_NIMBLE_ENABLED
ESP_RETURN_ON_ERROR(
esp_ble_hidh_deinit(),
TAG, "BLE HIDH deinit failed");
#endif /* CONFIG_GATTC_ENABLE */
TAILQ_INIT(&s_esp_hidh_devices);
vSemaphoreDelete(s_esp_hidh_devices_semaphore);
s_esp_hidh_devices_semaphore = NULL;
esp_event_loop_delete(s_esp_hidh_event_loop_h);
s_esp_hidh_event_loop_h = NULL;
return ret;
}
#if CONFIG_BLUEDROID_ENABLED
esp_hidh_dev_t *esp_hidh_dev_open(esp_bd_addr_t bda, esp_hid_transport_t transport, uint8_t remote_addr_type)
{
if (esp_hidh_dev_get_by_bda(bda) != NULL) {
ESP_LOGE(TAG, "Already Connected");
return NULL;
}
esp_hidh_dev_t *dev = NULL;
#if CONFIG_GATTC_ENABLE
if (transport == ESP_HID_TRANSPORT_BLE) {
dev = esp_ble_hidh_dev_open(bda, (esp_ble_addr_type_t)remote_addr_type);
}
#endif /* CONFIG_GATTC_ENABLE */
#if CONFIG_BT_NIMBLE_ENABLED
if (transport == ESP_HID_TRANSPORT_BLE) {
dev = esp_ble_hidh_dev_open(bda, remote_addr_type);
}
#endif /* CONFIG_BT_NIMBLE_ENABLED */
#if CONFIG_BT_HID_HOST_ENABLED
if (transport == ESP_HID_TRANSPORT_BT) {
dev = esp_bt_hidh_dev_open(bda);
}
#endif /* CONFIG_BT_HID_HOST_ENABLED */
return dev;
}
#endif /* CONFIG_BLUEDROID_ENABLED */
#if CONFIG_BT_NIMBLE_ENABLED
esp_hidh_dev_t *esp_hidh_dev_open(uint8_t *bda, esp_hid_transport_t transport, uint8_t remote_addr_type)
{
if (esp_hidh_dev_get_by_bda(bda) != NULL) {
ESP_LOGE(TAG, "Already Connected");
return NULL;
}
esp_hidh_dev_t *dev = NULL;
dev = esp_ble_hidh_dev_open(bda, remote_addr_type);
return dev;
}
#endif /* CONFIG_BT_NIMBLE_ENABLED */
esp_err_t esp_hidh_dev_close(esp_hidh_dev_t *dev)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->close(dev);
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
void esp_hidh_dev_dump(esp_hidh_dev_t *dev, FILE *fp)
{
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
dev->dump(dev, fp);
esp_hidh_dev_unlock(dev);
}
}
esp_err_t esp_hidh_dev_output_set(esp_hidh_dev_t *dev, size_t map_index, size_t report_id, uint8_t *value, size_t value_len)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->report_write(dev, map_index, report_id, ESP_HID_REPORT_TYPE_OUTPUT, value, value_len);
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_feature_set(esp_hidh_dev_t *dev, size_t map_index, size_t report_id, uint8_t *value, size_t value_len)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->report_write(dev, map_index, report_id, ESP_HID_REPORT_TYPE_FEATURE, value, value_len);
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_feature_get(esp_hidh_dev_t *dev, size_t map_index, size_t report_id, size_t max_length, uint8_t *value, size_t *value_len)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->report_read(dev, map_index, report_id, ESP_HID_REPORT_TYPE_FEATURE, max_length, value, value_len);
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_set_report(esp_hidh_dev_t *dev, size_t map_index, size_t report_id, int report_type, uint8_t *data, size_t length)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
if (dev->set_report) {
ret = dev->set_report(dev, map_index, report_id, report_type, data, length);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_get_report(esp_hidh_dev_t *dev, size_t map_index, size_t report_id, int report_type,
size_t max_len)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->report_read(dev, map_index, report_id, report_type, max_len, NULL, NULL);
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_get_idle(esp_hidh_dev_t *dev)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
if (dev->get_idle) {
ret = dev->get_idle(dev);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_set_idle(esp_hidh_dev_t *dev, uint8_t idle_time)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
if (dev->set_idle) {
ret = dev->set_idle(dev, idle_time);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_get_protocol(esp_hidh_dev_t *dev)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
if (dev->get_protocol) {
ret = dev->get_protocol(dev);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
esp_err_t esp_hidh_dev_set_protocol(esp_hidh_dev_t *dev, uint8_t protocol_mode)
{
esp_err_t ret = ESP_OK;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
if (dev->set_protocol) {
ret = dev->set_protocol(dev, protocol_mode);
} else {
ret = ESP_ERR_NOT_SUPPORTED;
}
esp_hidh_dev_unlock(dev);
} else {
ret = ESP_FAIL;
}
return ret;
}
const uint8_t *esp_hidh_dev_bda_get(esp_hidh_dev_t *dev)
{
uint8_t *ret = NULL;
#if CONFIG_BLUEDROID_ENABLED || CONFIG_BT_NIMBLE_ENABLED
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->addr.bda;
esp_hidh_dev_unlock(dev);
}
#endif /* CONFIG_BLUEDROID_ENABLED || CONFIG_BT_NIMBLE_ENABLED*/
return ret;
}
esp_hid_transport_t esp_hidh_dev_transport_get(esp_hidh_dev_t *dev)
{
esp_hid_transport_t ret = ESP_HID_TRANSPORT_MAX;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->transport;
esp_hidh_dev_unlock(dev);
}
return ret;
}
const esp_hid_device_config_t *esp_hidh_dev_config_get(esp_hidh_dev_t *dev)
{
esp_hid_device_config_t *ret = NULL;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = &dev->config;
esp_hidh_dev_unlock(dev);
}
return ret;
}
const char *esp_hidh_dev_name_get(esp_hidh_dev_t *dev)
{
const char * ret = NULL;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->config.device_name ? dev->config.device_name : "";
esp_hidh_dev_unlock(dev);
}
return ret;
}
const char *esp_hidh_dev_manufacturer_get(esp_hidh_dev_t *dev)
{
const char *ret = NULL;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->config.manufacturer_name ? dev->config.manufacturer_name : "";
esp_hidh_dev_unlock(dev);
}
return ret;
}
const char *esp_hidh_dev_serial_get(esp_hidh_dev_t *dev)
{
const char *ret = NULL;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->config.serial_number ? dev->config.serial_number : "";
esp_hidh_dev_unlock(dev);
}
return ret;
}
uint16_t esp_hidh_dev_vendor_id_get(esp_hidh_dev_t *dev)
{
uint16_t ret = 0;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->config.vendor_id;
esp_hidh_dev_unlock(dev);
}
return ret;
}
uint16_t esp_hidh_dev_product_id_get(esp_hidh_dev_t *dev)
{
uint16_t ret = 0;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->config.product_id;
esp_hidh_dev_unlock(dev);
}
return ret;
}
uint16_t esp_hidh_dev_version_get(esp_hidh_dev_t *dev)
{
uint16_t ret = 0;
if (!esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->config.version;
esp_hidh_dev_unlock(dev);
}
return ret;
}
esp_hid_usage_t esp_hidh_dev_usage_get(esp_hidh_dev_t *dev)
{
esp_hid_usage_t ret = ESP_HID_USAGE_GENERIC;
if (esp_hidh_dev_exists(dev)) {
esp_hidh_dev_lock(dev);
ret = dev->usage;
esp_hidh_dev_unlock(dev);
}
return ret;
}
esp_err_t esp_hidh_dev_reports_get(esp_hidh_dev_t *dev, size_t *num_reports, esp_hid_report_item_t **reports)
{
esp_err_t ret = 0;
esp_hid_report_item_t *r = NULL;
if (!esp_hidh_dev_exists(dev)) {
return ESP_FAIL;
}
esp_hidh_dev_lock(dev);
do {
r = (esp_hid_report_item_t *)malloc(sizeof(esp_hid_report_item_t) * dev->reports_len);
if (r == NULL) {
ret = ESP_FAIL;
break;
}
esp_hidh_dev_report_t *dr = dev->reports;
for (uint8_t i = 0; i < dev->reports_len; i++) {
if (dr == NULL) {
// error
free(r);
ret = ESP_FAIL;
goto error_;
}
r[i].map_index = dr->map_index;
r[i].protocol_mode = dr->protocol_mode;
r[i].usage = dr->usage;
r[i].report_id = dr->report_id;
r[i].report_type = dr->report_type;
r[i].value_len = dr->value_len;
dr = dr->next;
}
*reports = r;
*num_reports = dev->reports_len;
} while (0);
error_:;
esp_hidh_dev_unlock(dev);
return ret;
}
esp_err_t esp_hidh_dev_report_maps_get(esp_hidh_dev_t *dev, size_t *num_maps, esp_hid_raw_report_map_t **maps)
{
if (!esp_hidh_dev_exists(dev)) {
return ESP_FAIL;
}
esp_hidh_dev_lock(dev);
*num_maps = dev->config.report_maps_len;
*maps = dev->config.report_maps;
esp_hidh_dev_unlock(dev);
return ESP_OK;
}
/*
* Private Functions
* */
/**
* `lock_devices()` only protect the devices list, this mutex protect the single device instance.
*/
inline void esp_hidh_dev_lock(esp_hidh_dev_t *dev)
{
if (dev && dev->mutex != NULL) {
xSemaphoreTake(dev->mutex, portMAX_DELAY);
}
}
inline void esp_hidh_dev_unlock(esp_hidh_dev_t *dev)
{
if (dev && dev->mutex != NULL) {
xSemaphoreGive(dev->mutex);
}
}
inline void esp_hidh_dev_wait(esp_hidh_dev_t *dev)
{
if (dev && dev->semaphore != NULL) {
xSemaphoreTake(dev->semaphore, portMAX_DELAY);
}
}
inline void esp_hidh_dev_send(esp_hidh_dev_t *dev)
{
if (dev && dev->semaphore != NULL) {
xSemaphoreGive(dev->semaphore);
}
}
esp_hidh_dev_report_t *esp_hidh_dev_get_report_by_handle(esp_hidh_dev_t *dev, uint16_t handle)
{
esp_hidh_dev_report_t *r = dev->reports;
while (r) {
if (r->handle == handle) {
return r;
}
r = r->next;
}
return NULL;
}
esp_hidh_dev_report_t *esp_hidh_dev_get_report_by_id_type_proto(esp_hidh_dev_t *dev, size_t map_index, size_t report_id, int report_type, uint8_t protocol_mode)
{
esp_hidh_dev_report_t *r = dev->reports;
while (r) {
if (r->map_index == map_index && r->report_type == report_type && r->report_id == report_id &&
r->protocol_mode == protocol_mode) {
return r;
}
r = r->next;
}
return NULL;
}
esp_hidh_dev_report_t *esp_hidh_dev_get_report_by_id_and_type(esp_hidh_dev_t *dev, size_t map_index, size_t report_id, int report_type)
{
esp_hidh_dev_report_t *r = dev->reports;
while (r) {
if (r->map_index == map_index && r->report_id == report_id && r->report_type == report_type && r->protocol_mode == ESP_HID_PROTOCOL_MODE_REPORT) {
return r;
}
r = r->next;
}
return NULL;
}
esp_hidh_dev_report_t *esp_hidh_dev_get_input_report_by_id_and_proto(esp_hidh_dev_t *dev, size_t report_id, int protocol_mode)
{
esp_hidh_dev_report_t *r = dev->reports;
while (r) {
if (r->report_id == report_id && (r->report_type & ESP_HID_REPORT_TYPE_INPUT) && r->protocol_mode == protocol_mode) {
return r;
}
r = r->next;
}
return NULL;
}
esp_hidh_dev_report_t *esp_hidh_dev_get_input_report_by_len_and_proto(esp_hidh_dev_t *dev, size_t len, int protocol_mode)
{
esp_hidh_dev_report_t *r = dev->reports;
while (r) {
if (r->value_len == len && (r->report_type & ESP_HID_REPORT_TYPE_INPUT) && r->protocol_mode == protocol_mode) {
return r;
}
r = r->next;
}
return NULL;
}
/**
* If no Report ID item tags are present in the Report descriptor, it
* can be assumed that only one Input, Output, and Feature report structure exists
* and together they represent all of the device’s data.
*/
esp_hidh_dev_report_t *esp_hidh_dev_get_input_report_by_proto_and_data(esp_hidh_dev_t *dev, int protocol_mode,
size_t len, const uint8_t *data, bool *has_report_id)
{
esp_hidh_dev_report_t *r = dev->reports;
*has_report_id = false;
// first, assume data not include report id
while (r) {
if (r->value_len == len && r->report_id == 0 && (r->report_type & ESP_HID_REPORT_TYPE_INPUT) &&
r->protocol_mode == protocol_mode) {
*has_report_id = false;
break;
}
r = r->next;
}
// indicate data include report id
if (r == NULL) {
if (*data == 0) {
ESP_LOGE(TAG, "data not include report id!");
*has_report_id = false;
return NULL;
}
r = dev->reports;
while (r) {
/**
* @note For some HID device, the input report length may exceed the length which is declared in HID
* descriptor, like Logitech K380 keyboard. So loose the check condition from `r->value_len == len - 1` to
* `r->value_len <= len - 1`.
*/
if (r->value_len <= len - 1 && r->report_id == *data && (r->report_type & ESP_HID_REPORT_TYPE_INPUT) &&
r->protocol_mode == protocol_mode) {
*has_report_id = true;
break;
}
r = r->next;
}
}
return r;
}
static void esp_hidh_dev_resources_free(esp_hidh_dev_t *dev)
{
esp_hidh_dev_lock(dev);
if (dev->semaphore) {
vSemaphoreDelete(dev->semaphore);
}
if (dev->trans_timer) {
esp_timer_stop(dev->trans_timer);
esp_timer_delete(dev->trans_timer);
dev->trans_timer = NULL;
}
free((void *)dev->config.device_name);
free((void *)dev->config.manufacturer_name);
free((void *)dev->config.serial_number);
for (uint8_t d = 0; d < dev->config.report_maps_len; d++) {
/* data of report map maybe is NULL */
if (dev->config.report_maps[d].data) {
free((void *)dev->config.report_maps[d].data);
}
}
free((void *)dev->config.report_maps);
esp_hidh_dev_report_t *r;
while (dev->reports) {
r = dev->reports;
dev->reports = dev->reports->next;
free(r);
}
esp_hidh_dev_unlock(dev);
if (dev->mutex) {
vSemaphoreDelete(dev->mutex);
}
free(dev);
}
esp_hidh_dev_t *esp_hidh_dev_malloc()
{
esp_hidh_dev_t *dev = (esp_hidh_dev_t *)calloc(1, sizeof(esp_hidh_dev_t));
if (dev == NULL) {
ESP_LOGE(TAG, "malloc esp_hidh_dev_t failed");
return NULL;
}
dev->semaphore = xSemaphoreCreateBinary();
if (dev->semaphore == NULL) {
ESP_LOGE(TAG, "malloc semaphore failed");
esp_hidh_dev_resources_free(dev);
return NULL;
}
dev->mutex = xSemaphoreCreateMutex();
if (dev->mutex == NULL) {
ESP_LOGE(TAG, "malloc mutex failed");
esp_hidh_dev_resources_free(dev);
return NULL;
}
lock_devices();
TAILQ_INSERT_TAIL(&s_esp_hidh_devices, dev, devices);
unlock_devices();
return dev;
}
/**
* The `dev` is allocated by the internal function, and it should also be freed by the internal function. So, when the
* user call this function, it will do nothing.
*/
esp_err_t esp_hidh_dev_free(esp_hidh_dev_t *dev)
{
return ESP_OK;
}
esp_err_t esp_hidh_dev_free_inner(esp_hidh_dev_t *dev)
{
esp_err_t ret = ESP_FAIL;
if (dev == NULL) {
return ret;
}
esp_hidh_dev_t *d = NULL;
esp_hidh_dev_t *next = NULL;
lock_devices();
TAILQ_FOREACH_SAFE(d, &s_esp_hidh_devices, devices, next) {
if (d == dev) {
TAILQ_REMOVE(&s_esp_hidh_devices, d, devices);
esp_hidh_dev_resources_free(d);
ret = ESP_OK;
break;
}
}
unlock_devices();
if (ret != ESP_OK) {
ESP_LOGW(TAG, "device not found");
} else {
ESP_LOGD(TAG, "device removed");
}
return ret;
}
#if CONFIG_BLUEDROID_ENABLED
esp_hidh_dev_t *esp_hidh_dev_get_by_bda(esp_bd_addr_t bda)
{
esp_hidh_dev_t * d = NULL;
lock_devices();
TAILQ_FOREACH(d, &s_esp_hidh_devices, devices) {
if (memcmp(bda, d->addr.bda, sizeof(esp_bd_addr_t)) == 0) {
unlock_devices();
return d;
}
}
unlock_devices();
return NULL;
}
esp_hidh_dev_t *esp_hidh_dev_get_by_handle(uint8_t handle)
{
#if CONFIG_BT_HID_HOST_ENABLED
esp_hidh_dev_t * d = NULL;
lock_devices();
TAILQ_FOREACH(d, &s_esp_hidh_devices, devices) {
if (d->transport == ESP_HID_TRANSPORT_BT && d->bt.handle == handle) {
unlock_devices();
return d;
}
}
unlock_devices();
#endif /* CONFIG_BT_HID_HOST_ENABLED */
return NULL;
}
esp_hidh_dev_t *esp_hidh_dev_get_by_conn_id(uint16_t conn_id)
{
#if CONFIG_GATTC_ENABLE
esp_hidh_dev_t * d = NULL;
lock_devices();
TAILQ_FOREACH(d, &s_esp_hidh_devices, devices) {
if (d->transport == ESP_HID_TRANSPORT_BLE && d->ble.conn_id == conn_id) {
unlock_devices();
return d;
}
}
unlock_devices();
#endif /* CONFIG_GATTC_ENABLE */
return NULL;
}
/**
* The deep copy data append the end of the esp_hidh_event_data_t, move the data pointer to the correct address. This is
* a workaround way, it's better to use flexible array in the interface.
*/
void esp_hidh_preprocess_event_handler(void *event_handler_arg, esp_event_base_t event_base, int32_t event_id,
void *event_data)
{
esp_hidh_event_t event = (esp_hidh_event_t)event_id;
esp_hidh_event_data_t *param = (esp_hidh_event_data_t *)event_data;
switch (event) {
case ESP_HIDH_INPUT_EVENT:
if (param->input.length && param->input.data) {
param->input.data = (uint8_t *)param + sizeof(esp_hidh_event_data_t);
}
break;
case ESP_HIDH_FEATURE_EVENT:
if (param->feature.length && param->feature.data) {
param->feature.data = (uint8_t *)param + sizeof(esp_hidh_event_data_t);
}
break;
default:
break;
}
}
void esp_hidh_postprocess_event_handler(void *event_handler_arg, esp_event_base_t event_base, int32_t event_id,
void *event_data)
{
esp_hidh_event_t event = (esp_hidh_event_t)event_id;
esp_hidh_event_data_t *param = (esp_hidh_event_data_t *)event_data;
switch (event) {
case ESP_HIDH_OPEN_EVENT:
if (param->open.status != ESP_OK) {
esp_hidh_dev_t *dev = param->open.dev;
if (dev) {
#if CONFIG_BT_HID_HOST_ENABLED
if (esp_hidh_dev_transport_get(dev) == ESP_HID_TRANSPORT_BT && param->open.status == ESP_HIDH_ERR_SDP) {
break;
}
#endif /* CONFIG_BT_HID_HOST_ENABLED */
esp_hidh_dev_free_inner(dev);
}
}
break;
case ESP_HIDH_CLOSE_EVENT:
esp_hidh_dev_free_inner(param->close.dev);
break;
default:
break;
}
}
#endif /* CONFIG_BLUEDROID_ENABLED */
#if CONFIG_BT_NIMBLE_ENABLED
esp_hidh_dev_t *esp_hidh_dev_get_by_bda(uint8_t *bda)
{
esp_hidh_dev_t * d = NULL;
lock_devices();
TAILQ_FOREACH(d, &s_esp_hidh_devices, devices) {
if (memcmp(bda, d->addr.bda, sizeof(uint8_t) * 6) == 0) {
unlock_devices();
return d;
}
}
unlock_devices();
return NULL;
}
esp_hidh_dev_t *esp_hidh_dev_get_by_conn_id(uint16_t conn_id)
{
esp_hidh_dev_t * d = NULL;
lock_devices();
TAILQ_FOREACH(d, &s_esp_hidh_devices, devices) {
if (d->ble.conn_id == conn_id) {
unlock_devices();
return d;
}
}
unlock_devices();
return NULL;
}
/**
* The deep copy data append the end of the esp_hidh_event_data_t, move the data pointer to the correct address. This is
* a workaround way, it's better to use flexible array in the interface.
*/
void esp_hidh_preprocess_event_handler(void *event_handler_arg, esp_event_base_t event_base, int32_t event_id,
void *event_data)
{
esp_hidh_event_t event = (esp_hidh_event_t)event_id;
esp_hidh_event_data_t *param = (esp_hidh_event_data_t *)event_data;
switch (event) {
case ESP_HIDH_INPUT_EVENT:
if (param->input.length && param->input.data) {
param->input.data = (uint8_t *)param + sizeof(esp_hidh_event_data_t);
}
break;
case ESP_HIDH_FEATURE_EVENT:
if (param->feature.length && param->feature.data) {
param->feature.data = (uint8_t *)param + sizeof(esp_hidh_event_data_t);
}
break;
default:
break;
}
}
void esp_hidh_postprocess_event_handler(void *event_handler_arg, esp_event_base_t event_base, int32_t event_id,
void *event_data)
{
esp_hidh_event_t event = (esp_hidh_event_t)event_id;
esp_hidh_event_data_t *param = (esp_hidh_event_data_t *)event_data;
switch (event) {
case ESP_HIDH_OPEN_EVENT:
if (param->open.status != ESP_OK) {
esp_hidh_dev_t *dev = param->open.dev;
if (dev) {
esp_hidh_dev_free_inner(dev);
}
}
break;
case ESP_HIDH_CLOSE_EVENT:
esp_hidh_dev_free_inner(param->close.dev);
break;
default:
break;
}
}
#endif /* CONFIG_BT_NIMBLE_ENABLED */
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