music-player-fm/mpfm.c

127 lines
3.9 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <libusb-1.0/libusb.h>
#include <libudev.h>
#include <string.h>
static int count = 0;
void get_partition(uint16_t idVendor, uint16_t idProduct) {
struct udev *udev = udev_new();
if (!udev) {
printf("Error: Failed to initialize udev.\n");
return;
}
struct udev_enumerate *enumerate = udev_enumerate_new(udev);
udev_enumerate_add_match_subsystem(enumerate, "block");
udev_enumerate_scan_devices(enumerate);
struct udev_list_entry *devices = udev_enumerate_get_list_entry(enumerate);
struct udev_list_entry *entry;
udev_list_entry_foreach(entry, devices) {
const char *path = udev_list_entry_get_name(entry);
struct udev_device *dev = udev_device_new_from_syspath(udev, path);
// Obtén el idVendor e idProduct del dispositivo USB actual
const char *vendor_id_str = udev_device_get_sysattr_value(dev, "idVendor");
const char *product_id_str = udev_device_get_sysattr_value(dev, "idProduct");
printf(vendor_id_str);
if (vendor_id_str && product_id_str) {
uint16_t vendor_id = strtol(vendor_id_str, NULL, 16);
uint16_t product_id = strtol(product_id_str, NULL, 16);
if (vendor_id == idVendor && product_id == idProduct) {
const char *partition = udev_device_get_devnode(dev);
if (partition) {
// Extraer el nombre de la partición
const char *partition_name = strrchr(partition, '/');
if (partition_name) {
printf("Partition: %s\n", partition_name + 1);
} else {
printf("Partition: %s\n", partition);
}
} else {
printf("Error: Failed to get partition.\n");
}
break;
}
}
udev_device_unref(dev);
}
udev_enumerate_unref(enumerate);
udev_unref(udev);
}
int hotplug_callback(struct libusb_context *ctx, struct libusb_device *dev,
libusb_hotplug_event event, void *user_data) {
static libusb_device_handle *dev_handle = NULL;
struct libusb_device_descriptor desc;
int rc;
printf("Entering callback\n"); // DEBUG
(void)libusb_get_device_descriptor(dev, &desc);
printf("%04x:%04x (bus %d, device %d)\n",
desc.idVendor, desc.idProduct,
libusb_get_bus_number(dev), libusb_get_device_address(dev));
if (LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED == event) {
rc = libusb_open(dev, &dev_handle);
if (LIBUSB_SUCCESS != rc) {
printf("Could not open USB device\n");
}
// Obtén la partición del dispositivo
get_partition(desc.idVendor, desc.idProduct);
} else if (LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT == event) {
if (dev_handle) {
libusb_close(dev_handle);
dev_handle = NULL;
}
} else {
printf("Unhandled event %d\n", event);
}
count++;
return 0;
}
int main (void) {
libusb_hotplug_callback_handle callback_handle;
int rc;
libusb_init(NULL);
rc = libusb_hotplug_register_callback(
NULL,
LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED | LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT,
0,
LIBUSB_HOTPLUG_MATCH_ANY,
LIBUSB_HOTPLUG_MATCH_ANY,
LIBUSB_HOTPLUG_MATCH_ANY,
hotplug_callback,
NULL,
&callback_handle);
if (LIBUSB_SUCCESS != rc) {
printf("Error creating a hotplug callback\n");
libusb_exit(NULL);
return EXIT_FAILURE;
}
while (count < 2) {
libusb_handle_events_completed(NULL, NULL);
nanosleep(&(struct timespec){0, 10000000UL}, NULL);
}
libusb_hotplug_deregister_callback(NULL, callback_handle);
libusb_exit(NULL);
return 0;
}