DeviceDescriptor (usb4java 1.3.0 API)

java.lang.Object
- org.usb4java.DeviceDescriptor

```
public final class DeviceDescriptor
extends Object
```
A structure representing the standard USB device descriptor. This descriptor is documented in section 9.6.1 of the USB 3.0 specification. All multiple-byte fields are represented in host-endian format.

Author:

Klaus Reimer (k@ailis.de)

Constructor Summary

Constructors
Constructor and Description

DeviceDescriptor()
Constructs a new device descriptor which can be passed to the LibUsb.getDeviceDescriptor(Device, DeviceDescriptor) method.

Constructors
Constructor and Description
`DeviceDescriptor()` Constructs a new device descriptor which can be passed to the `LibUsb.getDeviceDescriptor(Device, DeviceDescriptor)` method.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`short`	`bcdDevice()` Returns the device release number in binary-coded decimal.
`short`	`bcdUSB()` Returns the USB specification release number in binary-coded decimal.
`byte`	`bDescriptorType()` Returns the descriptor type.
`byte`	`bDeviceClass()` Returns the USB-IF class code for the device.
`byte`	`bDeviceProtocol()` Returns the USB-IF protocol code for the device, qualified by the bDeviceClass and bDeviceSubClass values.
`byte`	`bDeviceSubClass()` Returns the USB-IF subclass code for the device, qualified by the bDeviceClass value.
`byte`	`bLength()` Returns the size of this descriptor (in bytes).
`byte`	`bMaxPacketSize0()` Returns the maximum packet size for endpoint 0.
`byte`	`bNumConfigurations()` Returns the number of possible configurations.
`String`	`dump()` Returns a dump of this descriptor.
`String`	`dump(DeviceHandle handle)` Returns a dump of this descriptor.
`boolean`	`equals(Object obj)`
`ByteBuffer`	`getBuffer()` Returns the Java byte buffer which contains the descriptor structure.
`long`	`getPointer()` Returns the native pointer.
`int`	`hashCode()`
`short`	`idProduct()` Returns the USB-IF product ID.
`short`	`idVendor()` Returns the USB-IF vendor ID.
`byte`	`iManufacturer()` Returns the index of the string descriptor describing manufacturer.
`byte`	`iProduct()` Returns the index of the string descriptor describing product.
`byte`	`iSerialNumber()` Returns the index of the string descriptor containing device serial number.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - DeviceDescriptor
```
public DeviceDescriptor()
```
    Constructs a new device descriptor which can be passed to the LibUsb.getDeviceDescriptor(Device, DeviceDescriptor) method.
- Method Detail
  - getPointer
```
public long getPointer()
```
    Returns the native pointer.
    
    Returns:
    
    The native pointer.
  - getBuffer
```
public ByteBuffer getBuffer()
```
    Returns the Java byte buffer which contains the descriptor structure.
    
    Returns:
    
    The descriptor structure buffer.
  - bLength
```
public byte bLength()
```
    Returns the size of this descriptor (in bytes).
    
    Returns:
    
    The size of this descriptor (in bytes).
  - bDescriptorType
```
public byte bDescriptorType()
```
    Returns the descriptor type. Will have value LibUsb.DT_DEVICE in this context.
    
    Returns:
    
    The descriptor type.
  - bcdUSB
```
public short bcdUSB()
```
    Returns the USB specification release number in binary-coded decimal. A value of 0x0200 indicates USB 2.0, 0x0110 indicates USB 1.1, etc.
    
    Returns:
    
    The USB specification release number.
  - bDeviceClass
```
public byte bDeviceClass()
```
    Returns the USB-IF class code for the device. See LibUSB.CLASS_* constants.
    
    Returns:
    
    The USB-IF class code.
  - bDeviceSubClass
```
public byte bDeviceSubClass()
```
    Returns the USB-IF subclass code for the device, qualified by the bDeviceClass value.
    
    Returns:
    
    The USB-IF subclass code.
  - bDeviceProtocol
```
public byte bDeviceProtocol()
```
    Returns the USB-IF protocol code for the device, qualified by the bDeviceClass and bDeviceSubClass values.
    
    Returns:
    
    The USB-IF protocol code.
  - bMaxPacketSize0
```
public byte bMaxPacketSize0()
```
    Returns the maximum packet size for endpoint 0.
    
    Returns:
    
    The maximum packet site for endpoint 0.
  - idVendor
```
public short idVendor()
```
    Returns the USB-IF vendor ID.
    
    Returns:
    
    The vendor ID
  - idProduct
```
public short idProduct()
```
    Returns the USB-IF product ID.
    
    Returns:
    
    The product ID.
  - bcdDevice
```
public short bcdDevice()
```
    Returns the device release number in binary-coded decimal.
    
    Returns:
    
    The device release number.
  - iManufacturer
```
public byte iManufacturer()
```
    Returns the index of the string descriptor describing manufacturer.
    
    Returns:
    
    The manufacturer string descriptor index.
  - iProduct
```
public byte iProduct()
```
    Returns the index of the string descriptor describing product.
    
    Returns:
    
    The product string descriptor index.
  - iSerialNumber
```
public byte iSerialNumber()
```
    Returns the index of the string descriptor containing device serial number.
    
    Returns:
    
    The serial number string descriptor index.
  - bNumConfigurations
```
public byte bNumConfigurations()
```
    Returns the number of possible configurations.
    
    Returns:
    
    The number of possible configurations.
  - dump
```
public String dump()
```
    Returns a dump of this descriptor.
    
    Returns:
    
    The descriptor dump.
  - dump
```
public String dump(DeviceHandle handle)
```
    Returns a dump of this descriptor.
    
    Parameters:
    
    handle - The USB device handle for resolving string descriptors. If null then no strings are resolved.
    
    Returns:
    
    The descriptor dump.
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class DeviceDescriptor

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DeviceDescriptor

Method Detail

getPointer

getBuffer

bLength

bDescriptorType

bcdUSB

bDeviceClass

bDeviceSubClass

bDeviceProtocol

bMaxPacketSize0

idVendor

idProduct

bcdDevice

iManufacturer

iProduct

iSerialNumber

bNumConfigurations

dump

dump

hashCode

equals

toString