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DeviceList.java
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116 lines (104 loc) · 2.82 KB
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/*
* Copyright 2013 Klaus Reimer <[email protected]>
* See LICENSE.md for licensing information.
*
* Based on libusb <http://libusb.info/>:
*
* Copyright 2001 Johannes Erdfelt <[email protected]>
* Copyright 2007-2009 Daniel Drake <[email protected]>
* Copyright 2010-2012 Peter Stuge <[email protected]>
* Copyright 2008-2013 Nathan Hjelm <[email protected]>
* Copyright 2009-2013 Pete Batard <[email protected]>
* Copyright 2009-2013 Ludovic Rousseau <[email protected]>
* Copyright 2010-2012 Michael Plante <[email protected]>
* Copyright 2011-2013 Hans de Goede <[email protected]>
* Copyright 2012-2013 Martin Pieuchot <[email protected]>
* Copyright 2012-2013 Toby Gray <[email protected]>
*/
package org.usb4java;
import java.util.Iterator;
/**
* List of devices as returned by
* {@link LibUsb#getDeviceList(Context, DeviceList)}.
*
* @author Klaus Reimer ([email protected])
*/
public final class DeviceList implements Iterable<Device>
{
/** The native pointer to the devices array. */
private long deviceListPointer;
/** The number of devices in the list. */
private int size;
/**
* Constructs a new device list. Must be passed to
* {@link LibUsb#getDeviceList(Context, DeviceList)} before using it.
*/
public DeviceList()
{
// Empty
}
/**
* Returns the native pointer.
*
* @return The native pointer.
*/
public long getPointer()
{
return this.deviceListPointer;
}
/**
* Returns the number of devices in the list.
*
* @return The number of devices in the list.
*/
public int getSize()
{
return this.size;
}
/**
* Returns the device with the specified index.
*
* @param index
* The device index.
* @return The device or null when index is out of bounds.
*/
public native Device get(final int index);
@Override
public Iterator<Device> iterator()
{
return new DeviceListIterator(this);
}
@Override
public int hashCode()
{
final int prime = 31;
int result = 1;
result = (prime * result)
+ (int) (this.deviceListPointer ^ (this.deviceListPointer >>> 32));
return result;
}
@Override
public boolean equals(final Object obj)
{
if (this == obj)
{
return true;
}
if (obj == null)
{
return false;
}
if (this.getClass() != obj.getClass())
{
return false;
}
final DeviceList other = (DeviceList) obj;
return this.deviceListPointer == other.deviceListPointer;
}
@Override
public String toString()
{
return String.format("libusb device list 0x%x with size %d",
this.deviceListPointer, this.size);
}
}