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#include "gamepad.h"
#include "common/io.h"
#include <stdio.h>
#include <fcntl.h>
#include <usbhid.h>
#if __has_include(<dev/usb/usb_ioctl.h>)
#include <dev/usb/usb_ioctl.h> // FreeBSD
#else
#include <bus/u4b/usb_ioctl.h> // DragonFly
#endif
#define MAX_UHID_JOYS 64
const char* ffDetectGamepad(FFlist* devices /* List of FFGamepadDevice */) {
char path[16];
for (int i = 0; i < MAX_UHID_JOYS; i++) {
snprintf(path, ARRAY_SIZE(path), "/dev/uhid%d", i);
FF_AUTO_CLOSE_FD int fd = open(path, O_RDONLY | O_CLOEXEC);
if (fd < 0) {
if (errno == ENOENT) {
break; // No more devices
}
continue; // Device not found
}
report_desc_t repDesc = hid_get_report_desc(fd);
if (!repDesc) {
continue;
}
int reportId = hid_get_report_id(fd);
struct hid_data* hData = hid_start_parse(repDesc, 0, reportId);
if (hData) {
struct hid_item hItem;
while (hid_get_item(hData, &hItem) > 0) {
if (HID_PAGE(hItem.usage) != 1) {
continue;
}
switch (HID_USAGE(hItem.usage)) {
case 1: // Pointer. FreeBSD returns 1 for my Pro Controller for some reason
case 4: // Joystick
case 5: // Gamepad
break;
default:
continue;
}
struct usb_device_info di;
if (ioctl(fd, USB_GET_DEVICEINFO, &di) != -1) {
FFGamepadDevice* device = FF_LIST_ADD(FFGamepadDevice, *devices);
ffStrbufInitS(&device->serial, di.udi_serial);
ffStrbufInitF(&device->name, "%s %s", di.udi_vendor, di.udi_product);
device->battery = 0;
}
}
hid_end_parse(hData);
}
hid_dispose_report_desc(repDesc);
}
return NULL;
}
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