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diff --git a/app/src/main/jni/libusb-1.0.22/libusb/hotplug.h b/app/src/main/jni/libusb-1.0.22/libusb/hotplug.h
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index 0000000..dbadbcb
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+++ b/app/src/main/jni/libusb-1.0.22/libusb/hotplug.h
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+/* -*- Mode: C; indent-tabs-mode:t ; c-basic-offset:8 -*- */
+/*
+ * Hotplug support for libusb
+ * Copyright © 2012-2013 Nathan Hjelm <hjelmn@mac.com>
+ * Copyright © 2012-2013 Peter Stuge <peter@stuge.se>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef USBI_HOTPLUG_H
+#define USBI_HOTPLUG_H
+
+#include "libusbi.h"
+
+enum usbi_hotplug_flags {
+	/* This callback is interested in device arrivals */
+	USBI_HOTPLUG_DEVICE_ARRIVED = LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED,
+
+	/* This callback is interested in device removals */
+	USBI_HOTPLUG_DEVICE_LEFT = LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT,
+
+	/* IMPORTANT: The values for the below entries must start *after*
+	 * the highest value of the above entries!!!
+	 */
+
+	/* The vendor_id field is valid for matching */
+	USBI_HOTPLUG_VENDOR_ID_VALID = (1 << 3),
+
+	/* The product_id field is valid for matching */
+	USBI_HOTPLUG_PRODUCT_ID_VALID = (1 << 4),
+
+	/* The dev_class field is valid for matching */
+	USBI_HOTPLUG_DEV_CLASS_VALID = (1 << 5),
+
+	/* This callback has been unregistered and needs to be freed */
+	USBI_HOTPLUG_NEEDS_FREE = (1 << 6),
+};
+
+/** \ingroup hotplug
+ * The hotplug callback structure. The user populates this structure with
+ * libusb_hotplug_prepare_callback() and then calls libusb_hotplug_register_callback()
+ * to receive notification of hotplug events.
+ */
+struct libusb_hotplug_callback {
+	/** Flags that control how this callback behaves */
+	uint8_t flags;
+
+	/** Vendor ID to match (if flags says this is valid) */
+	uint16_t vendor_id;
+
+	/** Product ID to match (if flags says this is valid) */
+	uint16_t product_id;
+
+	/** Device class to match (if flags says this is valid) */
+	uint8_t dev_class;
+
+	/** Callback function to invoke for matching event/device */
+	libusb_hotplug_callback_fn cb;
+
+	/** Handle for this callback (used to match on deregister) */
+	libusb_hotplug_callback_handle handle;
+
+	/** User data that will be passed to the callback function */
+	void *user_data;
+
+	/** List this callback is registered in (ctx->hotplug_cbs) */
+	struct list_head list;
+};
+
+struct libusb_hotplug_message {
+	/** The hotplug event that occurred */
+	libusb_hotplug_event event;
+
+	/** The device for which this hotplug event occurred */
+	struct libusb_device *device;
+
+	/** List this message is contained in (ctx->hotplug_msgs) */
+	struct list_head list;
+};
+
+void usbi_hotplug_deregister(struct libusb_context *ctx, int forced);
+void usbi_hotplug_match(struct libusb_context *ctx, struct libusb_device *dev,
+			libusb_hotplug_event event);
+void usbi_hotplug_notification(struct libusb_context *ctx, struct libusb_device *dev,
+			libusb_hotplug_event event);
+
+#endif