public class AltosDevice extends altos_device {
- static boolean initialized = false;
- static {
- try {
- System.loadLibrary("altos");
- libaltos.altos_init();
+ static public boolean initialized = false;
+ static public boolean loaded_library = false;
+
+ public static boolean load_library() {
+ if (!initialized) {
+ try {
+ System.loadLibrary("altos");
+ libaltos.altos_init();
+ loaded_library = true;
+ } catch (UnsatisfiedLinkError e) {
+ loaded_library = false;
+ }
initialized = true;
- } catch (UnsatisfiedLinkError e) {
- System.err.println("Native library failed to load.\n" + e);
}
+ return loaded_library;
+ }
+
+ static int usb_product_altusmetrum() {
+ if (load_library())
+ return libaltosConstants.USB_PRODUCT_ALTUSMETRUM;
+ return 0x000a;
+ }
+
+ static int usb_product_altusmetrum_min() {
+ if (load_library())
+ return libaltosConstants.USB_PRODUCT_ALTUSMETRUM_MIN;
+ return 0x000a;
+ }
+
+ static int usb_product_altusmetrum_max() {
+ if (load_library())
+ return libaltosConstants.USB_PRODUCT_ALTUSMETRUM_MAX;
+ return 0x000d;
+ }
+
+ static int usb_product_telemetrum() {
+ if (load_library())
+ return libaltosConstants.USB_PRODUCT_TELEMETRUM;
+ return 0x000b;
+ }
+
+ static int usb_product_teledongle() {
+ if (load_library())
+ return libaltosConstants.USB_PRODUCT_ALTUSMETRUM;
+ return 0x000c;
+ }
+
+ static int usb_product_teleterra() {
+ if (load_library())
+ return libaltosConstants.USB_PRODUCT_ALTUSMETRUM;
+ return 0x000d;
}
- public final static int AltusMetrum = libaltosConstants.USB_PRODUCT_ALTUSMETRUM;
- public final static int TeleMetrum = libaltosConstants.USB_PRODUCT_TELEMETRUM;
- public final static int TeleDongle = libaltosConstants.USB_PRODUCT_TELEDONGLE;
- public final static int TeleTerra = libaltosConstants.USB_PRODUCT_TELETERRA;
+
+ public final static int AltusMetrum = usb_product_altusmetrum();
+ public final static int TeleMetrum = usb_product_telemetrum();
+ public final static int TeleDongle = usb_product_teledongle();
+ public final static int TeleTerra = usb_product_teleterra();
+ public final static int AltusMetrumMin = usb_product_altusmetrum_min();
+ public final static int AltusMetrumMax = usb_product_altusmetrum_max();
+
+
public final static int Any = 0x10000;
public final static int BaseStation = 0x10000 + 1;
}
public boolean isAltusMetrum() {
- if (getVendor() != libaltosConstants.USB_VENDOR_ALTUSMETRUM)
+ if (getVendor() != AltusMetrum)
return false;
- if (getProduct() < libaltosConstants.USB_PRODUCT_ALTUSMETRUM_MIN)
+ if (getProduct() < AltusMetrumMin)
return false;
- if (getProduct() > libaltosConstants.USB_PRODUCT_ALTUSMETRUM_MAX)
+ if (getProduct() > AltusMetrumMax)
return false;
return true;
}
}
static AltosDevice[] list(int product) {
- if (!initialized)
+ if (!load_library())
return null;
SWIGTYPE_p_altos_list list = libaltos.altos_list_start();
dialog.setVisible(true);
return value;
} else {
- JOptionPane.showMessageDialog(frame,
- "No AltOS devices available",
- "No AltOS devices",
- JOptionPane.ERROR_MESSAGE);
+ /* check for missing altos JNI library, which
+ * will put up its own error dialog
+ */
+ if (AltosUI.load_library(frame)) {
+ JOptionPane.showMessageDialog(frame,
+ "No AltOS devices available",
+ "No AltOS devices",
+ JOptionPane.ERROR_MESSAGE);
+ }
return null;
}
}
public AltosVoice voice = new AltosVoice();
+ public static boolean load_library(Frame frame) {
+ if (!AltosDevice.load_library()) {
+ JOptionPane.showMessageDialog(frame,
+ String.format("No AltOS library in \"%s\"",
+ System.getProperty("java.library.path","<undefined>")),
+ "Cannot load device access library",
+ JOptionPane.ERROR_MESSAGE);
+ return false;
+ }
+ return true;
+ }
+
public AltosUI() {
+ load_library(null);
+
String[] statusNames = { "Height (m)", "State", "RSSI (dBm)", "Speed (m/s)" };
Object[][] statusData = { { "0", "pad", "-50", "0" } };