[HID] Added support for Xbox 360 Skylanders Portal

- This requires Zadig for installation of WinUSB driver for portal

src/xenia/hid/skylander/skylander_hardware.cc

@@ -0,0 +1,121 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2025 Xenia Canary. All rights reserved.                          *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include "xenia/hid/skylander/skylander_hardware.h"
+
+namespace xe {
+namespace hid {
+
+SkylanderPortalLibusb::SkylanderPortalLibusb() : SkylanderPortal() {
+  libusb_init(&context_);
+}
+
+SkylanderPortalLibusb::~SkylanderPortalLibusb() {
+  if (handle_) {
+    destroy_device();
+  }
+
+  libusb_exit(context_);
+}
+
+bool SkylanderPortalLibusb::init_device() {
+  if (!context_) {
+    return false;
+  }
+
+  libusb_device** devs;
+  ssize_t cnt = libusb_get_device_list(context_, &devs);
+  if (cnt < 0) {
+    // No device available... It might appear later.
+    return false;
+  }
+
+  bool device_found = false;
+  for (ssize_t i = 0; i < cnt; ++i) {
+    libusb_device* dev = devs[i];
+
+    struct libusb_device_descriptor desc;
+    if (libusb_get_device_descriptor(dev, &desc) == 0) {
+      // Check if this device matches the target Vendor ID and Product ID
+      if (desc.idVendor == portal_vendor_product_id.first &&
+          desc.idProduct == portal_vendor_product_id.second) {
+        libusb_device_handle* handle;
+        if (libusb_open(dev, &handle) == 0) {
+          libusb_claim_interface(handle, 0);
+          handle_ = reinterpret_cast<uintptr_t*>(handle);
+          device_found = true;
+        }
+      }
+    }
+  }
+  libusb_free_device_list(devs, 0);
+
+  return device_found;
+}
+
+void SkylanderPortalLibusb::destroy_device() {
+  libusb_release_interface(reinterpret_cast<libusb_device_handle*>(handle_), 0);
+  libusb_close(reinterpret_cast<libusb_device_handle*>(handle_));
+  handle_ = nullptr;
+}
+
+X_STATUS SkylanderPortalLibusb::read(std::vector<uint8_t>& data) {
+  if (!is_initialized()) {
+    if (!init_device()) {
+      return X_ERROR_DEVICE_NOT_CONNECTED;
+    }
+  }
+
+  if (data.size() > skylander_buffer_size) {
+    return X_ERROR_INVALID_PARAMETER;
+  }
+
+  const int result = libusb_interrupt_transfer(
+      reinterpret_cast<libusb_device_handle*>(handle_), read_endpoint,
+      data.data(), static_cast<int>(data.size()), nullptr, timeout);
+
+  if (result == LIBUSB_ERROR_NO_DEVICE) {
+    return X_ERROR_DEVICE_NOT_CONNECTED;
+  }
+
+  if (result < 0) {
+    destroy_device();
+  }
+
+  return X_ERROR_SUCCESS;
+}
+
+X_STATUS SkylanderPortalLibusb::write(std::vector<uint8_t>& data) {
+  if (!is_initialized()) {
+    if (!init_device()) {
+      return X_ERROR_DEVICE_NOT_CONNECTED;
+    }
+  }
+
+  if (data.size() > skylander_buffer_size) {
+    return X_ERROR_INVALID_PARAMETER;
+  }
+
+  const int result = libusb_interrupt_transfer(
+      reinterpret_cast<libusb_device_handle*>(handle_), write_endpoint,
+      data.data(), static_cast<int>(data.size()), nullptr, timeout);
+
+  if (result == LIBUSB_ERROR_NO_DEVICE) {
+    return X_ERROR_DEVICE_NOT_CONNECTED;
+  }
+
+  if (result < 0) {
+    destroy_device();
+  }
+
+  return X_ERROR_SUCCESS;
+};
+
+}  // namespace hid
+}  // namespace xe