gistfile1.h

// Snippet ported from xboxdrv

{ // find endpoints
  struct usb_config_descriptor *config;
  struct usb_interface *interface;
  struct usb_interface_descriptor *altsetting;
  struct usb_endpoint_descriptor *endpoing;

  for (
    config = dev->config;
    config != dev->config + dev->descriptor.bNumConfigurations;
    config = config + 1
    ) {

    for (
      interface = config->interface;
      interface != config->interface + config->bNumInterfaces;
      interface = interface + 1
      ) {

      for {
        altsetting = interface->altsetting;
        altsetting != interface->altsetting + interface->num_altsetting;
        altsetting = altsetting + 1
        ) {

        for (
          endpoint = altsetting->endpoint;
          endpoint != altsetting->endpoint + altsetting->bNumEndpoints;
          endpoint = endpoint + 1
          ) {

          if (
            altsetting->bInterfaceClass == USB_CLASS_VENDOR_SPEC &&
            altsetting->bInterfaceSubClass == 93 &&
            altsetting->bInterfaceProtocol == 1
            ) {

            if (endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
              endpoint_in = int(endpoint->bEndpointAddress & USB_ENDPOINT_ADDRESS_MASK);
            } else {
              endpoint_out = int(endpoint->bEndpointAddress & USB_ENDPOINT_ADDRESS_MASK);
            }
          }
        }
      }
    }
  }
}