本文整理汇总了Java中org.usb4java.Context类的典型用法代码示例。如果您正苦于以下问题:Java Context类的具体用法?Java Context怎么用?Java Context使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
Context类属于org.usb4java包,在下文中一共展示了Context类的6个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: DeviceManager
import org.usb4java.Context; //导入依赖的package包/类
/**
* Constructs a new device manager.
*
* @param rootHub
* The root hub. Must not be null.
* @param scanInterval
* The scan interval in milliseconds.
* @throws UsbException
* When USB initialization fails.
*/
DeviceManager(final RootHub rootHub, final int scanInterval)
throws UsbException
{
if (rootHub == null)
throw new IllegalArgumentException("rootHub must be set");
this.scanInterval = scanInterval;
this.rootHub = rootHub;
this.context = new Context();
final int result = LibUsb.init(this.context);
if (result != 0)
{
throw ExceptionUtils.createPlatformException(
"Unable to initialize libusb", result);
}
}
示例2: TMT20low
import org.usb4java.Context; //导入依赖的package包/类
public TMT20low() throws SecurityException, UsbException {
// Search for epson TM-T20
context = new Context();
int result = LibUsb.init(context);
if (result != LibUsb.SUCCESS) throw new LibUsbException("Unable to initialize libusb.", result);
device = findDevice(VENDOR_ID, PRODUCT_ID);
if (device == null) {
System.err.println("not found.");
System.exit(1);
return;
}
handle = new DeviceHandle();
result = LibUsb.open(device, handle);
if (result != LibUsb.SUCCESS) throw new LibUsbException("Unable to open USB device", result);
// Check if kernel driver must be detached
boolean detach = LibUsb.hasCapability(LibUsb.CAP_SUPPORTS_DETACH_KERNEL_DRIVER) && (LibUsb.kernelDriverActive(handle, 0) > 0);
System.out.println("hasCapability: "+LibUsb.hasCapability(LibUsb.CAP_SUPPORTS_DETACH_KERNEL_DRIVER)+
", kernelDriverActive: "+LibUsb.kernelDriverActive(handle, 0));
// Detach the kernel driver
if (detach) {
result = LibUsb.detachKernelDriver(handle, 0);
if (result != LibUsb.SUCCESS) throw new LibUsbException("Unable to detach kernel driver", result);
}
result = LibUsb.claimInterface(handle, 0);
if (result != LibUsb.SUCCESS) throw new LibUsbException("Unable to claim interface", result);
}
示例3: processEvent
import org.usb4java.Context; //导入依赖的package包/类
@Override
public int processEvent(Context context, Device device, int event,
Object userData)
{
DeviceDescriptor descriptor = new DeviceDescriptor();
int result = LibUsb.getDeviceDescriptor(device, descriptor);
if (result != LibUsb.SUCCESS)
throw new LibUsbException("Unable to read device descriptor",
result);
System.out.format("%s: %04x:%04x%n",
event == LibUsb.HOTPLUG_EVENT_DEVICE_ARRIVED ? "Connected" :
"Disconnected",
descriptor.idVendor(), descriptor.idProduct());
return 0;
}
示例4: main
import org.usb4java.Context; //导入依赖的package包/类
/**
* Main method.
*
* @param args
* Command-line arguments (Ignored)
*/
public static void main(final String[] args)
{
// Create the libusb context
final Context context = new Context();
// Initialize the libusb context
int result = LibUsb.init(context);
if (result < 0)
{
throw new LibUsbException("Unable to initialize libusb", result);
}
// Read the USB device list
final DeviceList list = new DeviceList();
result = LibUsb.getDeviceList(context, list);
if (result < 0)
{
throw new LibUsbException("Unable to get device list", result);
}
try
{
// Iterate over all devices and dump them
for (Device device: list)
{
dumpDevice(device);
}
}
finally
{
// Ensure the allocated device list is freed
LibUsb.freeDeviceList(list, true);
}
// Deinitialize the libusb context
LibUsb.exit(context);
}
示例5: processEvent
import org.usb4java.Context; //导入依赖的package包/类
@Override
public int processEvent(Context context, Device device, int event,
Object userData) {
DeviceDescriptor descriptor = new DeviceDescriptor();
int result = LibUsb.getDeviceDescriptor(device, descriptor);
if (result != LibUsb.SUCCESS) {
throw new LibUsbException("Unable to read device descriptor",
result);
}
Keyboard.KeyboardModel[] keyboardModel = Keyboard.getKeyboardModel();
if ((keyboardModel.length > 1) || (keyboardModel[0] != Keyboard.KeyboardModel.NoLogiKeyboard)) { //check if there is any keyboard connected
if ((event == LibUsb.HOTPLUG_EVENT_DEVICE_ARRIVED) && (descriptor.idVendor() == 0x046d)
&& Arrays.asList(keyboardsProductNumbers).contains(String.format("%04x", descriptor.idProduct()))) {
System.out.format("%s: %04x:%04x%n",
event == LibUsb.HOTPLUG_EVENT_DEVICE_ARRIVED
? "Connected" : "Disconnected",
descriptor.idVendor(), descriptor.idProduct());
if (keyboardModel.length > 1) {
//display dialog msg to indicate that program only supports one keyboard connected at a time
System.err.println("Only one keyboard is allowed at a time.");
return 0;
}
if (usbCurrently.equals("unplugged")) {
usbCurrently = "plugged";
if (status.equals("Running")) {
switch (keyboardModel[0]) {
case Logi910Spectrum:
case Logi910Spark:
case Logi810Spectrum:
case Logi610Orion:
case Logi410AtlasSpectrum:
LogiGSKService.gKeyboard = new GKeyboard(keyboardModel[0]);
LogiGSKService.gKeyboard = IOOperations.loadCurrentKeyboardObjectFromFile(keyboardModel[0]);
if (LogiGSKService.gKeyboard.getEffect() != null) {
resetEffect();
} else {
loadColoursToPhysicalKeyboard(gKeyboard.getKeyColourMap());
}
break;
case NoLogiKeyboard:
break;
default:
break;
}
}
}
}
} else if ((event == LibUsb.HOTPLUG_EVENT_DEVICE_LEFT) && (keyboardModel.length == 1) && (keyboardModel[0] == Keyboard.KeyboardModel.NoLogiKeyboard)) {
usbCurrently = "unplugged";
stopGKeyboardEffects();
} else if ((keyboardModel.length == 1) && (keyboardModel[0] == Keyboard.KeyboardModel.NoLogiKeyboard)) {
usbCurrently = "unplugged";
System.out.println("No connected Keyboard");
stopGKeyboardEffects();
}
return 0;
}
示例6: main
import org.usb4java.Context; //导入依赖的package包/类
/**
* Main method.
*
* @param args
* Command-line arguments (Ignored)
*/
public static void main(String[] args)
{
// Create the libusb context
Context context = new Context();
// Initialize the libusb context
int result = LibUsb.init(context);
if (result < 0)
{
throw new LibUsbException("Unable to initialize libusb", result);
}
// Read the USB device list
DeviceList list = new DeviceList();
result = LibUsb.getDeviceList(context, list);
if (result < 0)
{
throw new LibUsbException("Unable to get device list", result);
}
try
{
// Iterate over all devices and list them
for (Device device: list)
{
int address = LibUsb.getDeviceAddress(device);
int busNumber = LibUsb.getBusNumber(device);
DeviceDescriptor descriptor = new DeviceDescriptor();
result = LibUsb.getDeviceDescriptor(device, descriptor);
if (result < 0)
{
throw new LibUsbException(
"Unable to read device descriptor", result);
}
System.out.format(
"Bus %03d, Device %03d: Vendor %04x, Product %04x%n",
busNumber, address, descriptor.idVendor(),
descriptor.idProduct());
}
}
finally
{
// Ensure the allocated device list is freed
LibUsb.freeDeviceList(list, true);
}
// Deinitialize the libusb context
LibUsb.exit(context);
}