would anybody be so kind to show me what elements are needed to get this to work reliably ... in eclipse i specify the libuvc4j.jar with library location for libuvc.dylib in usr/local. i made this into a user library as well and include this in my projects. in some projects this works just fine, but in some cases i see this at the start of runtime

Feb 28, 2016 12:22:37 PM org.bridj.BridJ log INFO: Failed to get address of method protected static native void org.openpnp.libuvc4j.UvcLibrary.uvc_set_button_callback(long,org.openpnp.libuvc4j.UvcLibrary$uvc_button_callback_t,long) Feb 28, 2016 12:22:37 PM org.bridj.BridJ log INFO: Failed to get address of method protected static native int org.openpnp.libuvc4j.UvcLibrary.uvc_yuyv2y(long,long) Feb 28, 2016 12:22:37 PM org.bridj.BridJ log INFO: Failed to get address of method protected static native int org.openpnp.libuvc4j.UvcLibrary.uvc_yuyv2uv(long,long) Feb 28, 2016 12:22:37 PM org.bridj.BridJ log INFO: Failed to get address of method protected static native int org.openpnp.libuvc4j.UvcLibrary.uvc_mjpeg2rgb(long,long)

and later when i use one of these routines ...

Exception in thread "Thread-2" java.lang.UnsatisfiedLinkError: org.openpnp.libuvc4j.UvcLibrary.uvc_mjpeg2rgb(JJ)I at org.openpnp.libuvc4j.UvcLibrary.uvc_mjpeg2rgb(Native Method) at org.openpnp.libuvc4j.UvcLibrary.uvc_mjpeg2rgb(UvcLibrary.java:1537) at com.lobsterman.JavaGrinders.control.UVCDeviceManager_pnp$1.apply(UVCDeviceManager_pnp.java:494)

so it does not find implementations for these in the dylib. i believe i am doing the very same thing in the instances that work and those that don't. any suggestions where the critical elements reside that make this work? also what is special about these libuvc calls? why only those, while all others work fine? any suggestions?

Hi, I am trying to iterate through all available streamformats and all frameformats inside, similar to what happens in uvc_print_diag, but i only seem to get the first instance of each with ...

public static void listAllFrameDescriptors(Pointer<uvc_device_handle> devh, int formatIndex, int frameIndex) throws Exception {
    Pointer<uvc_format_desc> fmtDescPtr = UvcLibrary.uvc_get_format_descs(devh);
    uvc_format_desc fmtDesc = fmtDescPtr.get(formatIndex);
    System.out.println(fmtDesc.bDescriptorSubtype());
    uvc_frame_desc frameDesc = fmtDesc.frame_descs().get(frameIndex);
    System.out.println(frameDesc.bDescriptorSubtype() + "; w: " + frameDesc.wWidth() + "; h: " + frameDesc.wHeight() + " ");
}

i am only managing to get the first instance of each by calling

listFrameDescriptor(devh,0,0)

any index other than 0 fetches trouble.

any suggestions or examples on how to do this correctly are greatly welcome