Java Code Examples for com.sun.jna.NativeLong#intValue()

/**
 * Convert a long value to it's corresponding EDSDK error.
 *
 * @param value native long that was returned by a method from {@link org.blackdread.camerabinding.jna.EdsdkLibrary}
 * @return edsdk error from native long
 */
public static EdsdkError toEdsdkError(final NativeLong value) {
    for (EdsdkError error : EdsdkError.values()) {
        if (error.value().equals(value.intValue()))
            return error;
    }
    log.error("Unknown native error value: {}, {}", value.intValue(), value.longValue());
    // either we throw or maybe a default error like EDS_ERR_UNEXPECTED_EXCEPTION or another
    throw new IllegalArgumentException("Unknown native error value: " + value.intValue() + ", " + value.longValue());
}
 

/**
 * Release a ref from the camera
 *
 * @param ref refs to release
 */
public static void release(final EdsdkLibrary.EdsBaseRef ref) {
    if (ref != null) {
        final NativeLong nativeLong = CanonFactory.edsdkLibrary().EdsRelease(ref);
        if (nativeLong.intValue() == 0xFFFFFFFF) {
            log.warn("Failed to release {}", ref);
        }
    }
}
 

private static void loadLibraryBasics(final String libPath) {
    final EdsdkLibrary library = Native.loadLibrary(libPath, EdsdkLibrary.class, new HashMap<>());
    NativeLong result = library.EdsInitializeSDK();
    if (result.intValue() != 0)
        fail("Failed to init SDK");

    result = library.EdsTerminateSDK();
    if (result.intValue() != 0)
        fail("Failed to terminate SDK");
}
 

@Override
public void invoke(Pointer streamRef, Pointer clientCallBackInfo, NativeLong numEvents, Pointer eventPaths, Pointer eventFlags, Pointer eventIds) {
    final long st = System.currentTimeMillis();
    final int length = numEvents.intValue();
    final Pointer[] pointers = eventPaths.getPointerArray(0, length);
    int flags[];
    if (eventFlags == null) {
        flags = new int[length];
        LOG.log(DEBUG_LOG_LEVEL, "FSEventStreamCallback eventFlags == null, expected int[] of size {0}", length); //NOI18N
    } else {
        flags = eventFlags.getIntArray(0, length);
    }
    for (int i=0; i<length; i++) {
        final Pointer p = pointers[i];
        int flag = flags[i];
        final String path = p.getString(0);

        if ((flag & kFSEventStreamEventFlagMustScanSubDirs) ==  kFSEventStreamEventFlagMustScanSubDirs ||
            (flag & kFSEventStreamEventFlagMount) == kFSEventStreamEventFlagMount ||
            (flag & kFSEventStreamEventFlagUnmount) == kFSEventStreamEventFlagUnmount) {
            events.add(ALL_CHANGE);
        } else {
            events.add(path);
        }
        LOG.log(DEBUG_LOG_LEVEL, "Event on {0}", new Object[]{path});
    }
    LOG.log(PERF_LOG_LEVEL, "Callback time: {0}", (System.currentTimeMillis() - st));
}
 

public ByteBuffer getBuffer() {
  NativeLong length = _getLength();
  if (length.intValue() <= 0)
    return ByteBuffer.allocate(0);
  CFRange.ByValue range = new CFRange.ByValue();
  range.length = length;
  range.location = ZERO;
  ByteBuffer buffer = ByteBuffer.allocate(length.intValue());
  CFLibrary.INSTANCE.CFDataGetBytes(this, range, buffer);
  return buffer;
}
 

public int getLength() {
  NativeLong nl = CFLibrary.INSTANCE.CFDataGetLength(this);
  return nl.intValue();
}