org.usb4java

Class DescriptorUtils

java.lang.Object

org.usb4java.DescriptorUtils

public final class DescriptorUtils
extends Object

Utility methods used for descriptor dumps.

Author:

Klaus Reimer (k@ailis.de)

Method Summary

Modifier and Type	Method and Description
static String	decodeBCD(short bcd) Decodes a binary-coded decimal into a string and returns it.
static String	dump(ByteBuffer bytes) Dumps the specified byte buffer into a hex string and returns it.
static String	dump(ConfigDescriptor descriptor) Dumps the specified USB configuration descriptor into a string and returns it.
static String	dump(DeviceDescriptor descriptor) Dumps the specified USB device descriptor into a string and returns it.
static String	dump(DeviceDescriptor descriptor, String manufacturer, String product, String serial) Dumps the specified USB device descriptor into a string and returns it.
static String	dump(EndpointDescriptor descriptor) Dumps the specified USB endpoint descriptor into a string and returns it.
static String	dump(InterfaceDescriptor descriptor) Dumps the specified USB interface descriptor into a string and returns it.
static String	getDirectionName(byte bEndpointAddress) Returns the name of the USB traffic direction for the specified endpoint address.
static String	getSpeedName(int speed) Returns the name for the specified speed number.
static String	getSynchTypeName(byte bmAttributes) Returns the name for the synchronization type in the specified endpoint attributes.
static String	getTransferTypeName(byte bmAttributes) Returns the name for the transfer type in the specified endpoint attributes.
static String	getUsageTypeName(byte bmAttributes) Returns the name for the usage type in the specified endpoint attributes.
static String	getUSBClassName(byte usbClass) Returns the name of the specified USB class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getUSBClassName

public static String getUSBClassName(byte usbClass)

Returns the name of the specified USB class. "unknown" is returned for a class which is unknown to libusb.

Parameters:

usbClass - The numeric USB class.

Returns:

The USB class name.

decodeBCD

public static String decodeBCD(short bcd)

Decodes a binary-coded decimal into a string and returns it.

Parameters:

bcd - The binary-coded decimal to decode.

Returns:

The decoded binary-coded decimal.

dump

public static String dump(ByteBuffer bytes)

Dumps the specified byte buffer into a hex string and returns it.

Parameters:

bytes - The bytes to dump.

Returns:

The hex dump.

dump

public static String dump(DeviceDescriptor descriptor)

Dumps the specified USB device descriptor into a string and returns it.

Parameters:

descriptor - The USB device descriptor to dump.

Returns:

The descriptor dump.

dump

public static String dump(DeviceDescriptor descriptor,
                          String manufacturer,
                          String product,
                          String serial)

Dumps the specified USB device descriptor into a string and returns it.

Parameters:

descriptor - The USB device descriptor to dump.

manufacturer - The manufacturer string or null if unknown.

product - The product string or null if unknown.

serial - The serial number string or null if unknown.

Returns:

The descriptor dump.

dump

public static String dump(ConfigDescriptor descriptor)

Dumps the specified USB configuration descriptor into a string and returns it.

Parameters:

descriptor - The USB configuration descriptor to dump.

Returns:

The descriptor dump.

dump

public static String dump(InterfaceDescriptor descriptor)

Dumps the specified USB interface descriptor into a string and returns it.

Parameters:

descriptor - The USB interface descriptor to dump.

Returns:

The descriptor dump.

dump

public static String dump(EndpointDescriptor descriptor)

Dumps the specified USB endpoint descriptor into a string and returns it.

Parameters:

descriptor - The USB endpoint descriptor to dump.

Returns:

The descriptor dump.

getTransferTypeName

public static String getTransferTypeName(byte bmAttributes)

Returns the name for the transfer type in the specified endpoint attributes.

Parameters:

bmAttributes - The endpoint attributes value.

Returns:

The transfer type name.

getSynchTypeName

public static String getSynchTypeName(byte bmAttributes)

Returns the name for the synchronization type in the specified endpoint attributes.

Parameters:

bmAttributes - The endpoint attributes value.

Returns:

The synch type name.

getUsageTypeName

public static String getUsageTypeName(byte bmAttributes)

Returns the name for the usage type in the specified endpoint attributes.

Parameters:

bmAttributes - The endpoint attributes value.

Returns:

The usage type name.

getSpeedName

public static String getSpeedName(int speed)

Returns the name for the specified speed number.

Parameters:

speed - The speed number.

Returns:

The speed name.

getDirectionName

public static String getDirectionName(byte bEndpointAddress)

Returns the name of the USB traffic direction for the specified endpoint address.

Parameters:

bEndpointAddress - The endpoint address.

Returns:

The direction name.