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* See LICENSE.md for licensing information.

* Based on libusb <http://libusb.info/>:

package org.usb4java;

/**

* Structure representing a USB device detected on the system.

* This is an opaque type for which you are only ever provided with a pointer,

* usually originating from {@link LibUsb#getDeviceList(Context, DeviceList)}.

* Certain operations can be performed on a device, but in order to do any I/O

* you will have to first obtain a device handle using

* {@link LibUsb#open(Device, DeviceHandle)}.

* Devices are reference counted with {@link LibUsb#refDevice(Device)} and

* {@link LibUsb#unrefDevice(Device)}, and are freed when the reference count

* reaches 0. New devices presented by

* {@link LibUsb#getDeviceList(Context, DeviceList)} have a reference count of

* 1, and {@link LibUsb#freeDeviceList(DeviceList, boolean)} can optionally

* decrease the reference count on all devices in the list.

* {@link LibUsb#open(Device, DeviceHandle)} adds another reference which is

* later destroyed by {@link LibUsb#close(DeviceHandle)}.

* @author Klaus Reimer (k@ailis.de)

public final class Device

{

/** The native pointer to the device structure. */

private long devicePointer;

/**

* Package-private constructor to prevent manual instantiation. Devices are

* always created by JNI.

Device()

{

// Empty

}

/**

* Returns the native pointer to the device structure.

* @return The native pointer to the device structure.

public long getPointer()

{

return this.devicePointer;

}

@Override

public int hashCode()

{

final int prime = 31;

int result = 1;

result = (prime * result)

+ (int) (this.devicePointer ^ (this.devicePointer >>> 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 Device other = (Device) obj;

if (this.devicePointer != other.devicePointer)

{

return false;

}

return true;

}

@Override

public String toString()

{

return String.format("libusb device 0x%x", this.devicePointer);

}

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