copied glibusb in and started making it compile
diff --git a/aos/common/glibusb/glibusb_endpoint_internal.h b/aos/common/glibusb/glibusb_endpoint_internal.h
new file mode 100644
index 0000000..f19899e
--- /dev/null
+++ b/aos/common/glibusb/glibusb_endpoint_internal.h
@@ -0,0 +1,83 @@
+// Copyright 2012 Google Inc. All Rights Reserved.
+//
+// Wrapper for libusb's endpoints.
+
+#ifndef _GLIBUSB_GLIBUSB_ENDPOINT_INTERNAL_H_
+#define _GLIBUSB_GLIBUSB_ENDPOINT_INTERNAL_H_
+
+#include <stddef.h>
+#include <stdint.h>
+#include <libusb.h>
+
+#include "glibusb_endpoint.h"
+
+class Notification;
+
+namespace glibusb {
+
+class Buffer;
+
+
+// Provides an interface to allow reading from a USB endpoint.
+class PhysicalUsbInEndpoint : public UsbInEndpoint {
+ public:
+  virtual ~PhysicalUsbInEndpoint();
+
+ private:
+  friend class PhysicalUsbDevice;  // For constructor
+  // Constructs an endpoint given the context, handle, and a descriptor of the
+  // endpoint.  The context and handle must remain valid throughout the
+  // lifetime of this object.
+  PhysicalUsbInEndpoint(struct libusb_context *context,
+                        struct libusb_device_handle *handle,
+                        const struct libusb_endpoint_descriptor *descriptor);
+
+  virtual int DoGetMaxPacketSize();
+  virtual int DoGetMaxIsoPacketSize();
+
+  // Actually executes the read, with the length, timeout, buffer, and
+  // notification.
+  virtual IoStatus DoRead(
+      uint32_t length, int32_t timeout_milliseconds, Buffer *out,
+      Notification *quit);
+
+  // Libusb handles and endpoint information.
+  struct libusb_context *libusb_context_;
+  struct libusb_device_handle *handle_;
+
+  PhysicalUsbInEndpoint(const PhysicalUsbInEndpoint &) = delete;
+  void operator=(const PhysicalUsbInEndpoint &) = delete;
+};
+
+// Provides an interface to allow writing to a USB endpoint.
+class PhysicalUsbOutEndpoint : public UsbOutEndpoint {
+ public:
+  virtual ~PhysicalUsbOutEndpoint();
+
+ private:
+  friend class PhysicalUsbDevice;  // For constructor
+  // Constructs an endpoint given the context, handle, and a descriptor of the
+  // endpoint.  The context and handle must remain valid throughout the
+  // lifetime of this object.
+  PhysicalUsbOutEndpoint(struct libusb_context *context,
+                         struct libusb_device_handle *handle,
+                         const struct libusb_endpoint_descriptor *descriptor);
+
+  virtual int DoGetMaxPacketSize();
+  virtual int DoGetMaxIsoPacketSize();
+
+  // Implements the actual write.
+  virtual IoStatus DoWrite(const Buffer &buffer,
+			   int32_t timeout_milliseconds);
+
+  // Libusb handles and endpoint information.
+  struct libusb_context *libusb_context_;
+  struct libusb_device_handle *handle_;
+
+  PhysicalUsbOutEndpoint(const PhysicalUsbOutEndpoint &) = delete;
+  void operator=(const PhysicalUsbOutEndpoint &) = delete;
+};
+
+}  // namespace glibusb
+
+#endif  // _GLIBUSB_GLIBUSB_ENDPOINT_INTERNAL_H_