copied glibusb in and started making it compile
diff --git a/aos/common/glibusb/glibusb_internal.h b/aos/common/glibusb/glibusb_internal.h
new file mode 100644
index 0000000..8c34e5d
--- /dev/null
+++ b/aos/common/glibusb/glibusb_internal.h
@@ -0,0 +1,25 @@
+// Copyright 2012 Google Inc. All Rights Reserved.
+//
+// Internal conversions between libusb descriptors and enums.
+
+#ifndef _GLIBUSB_GLIBUSB_INTERNAL_H_
+#define _GLIBUSB_GLIBUSB_INTERNAL_H_
+
+#include "glibusb_endpoint.h"
+
+namespace glibusb {
+
+// Converts libusb endpoint address to integer
+int DescriptorToAddress(const struct libusb_endpoint_descriptor *descriptor);
+
+// Converts libusb direction to UsbEndpoint direction.
+UsbEndpoint::DirectionType DescriptorToDirection(
+ const struct libusb_endpoint_descriptor *descriptor);
+
+// Converts libusb transfer type to UsbEndpoint transfer type.
+UsbEndpoint::TransferType DescriptorToTransfer(
+ const struct libusb_endpoint_descriptor *descriptor);
+
+} // namespace glibusb
+
+#endif // _GLIBUSB_GLIBUSB_INTERNAL_H_