FrameGrabber and Intel QX3 Device

[Nicola Cadenelli]

Hi everybody,
I'm having some trouble to make the last version (I had no problem with previous versions) of v4l4j working with the Intel QX3.


The problem is that if I use a JPEGFrameGrabber as I always did (and which I'm sure that is supported by the device because I tested it with videoDevice.supportJPEGConversion()), I get images as the one attached. Image that is clearly not from the device stream.
Here the code used:

int std = V4L4JConstants.STANDARD_WEBCAM;

int channel = 0;

int quality = V4L4JConstants.MAX_JPEG_QUALITY-10; //If I use the max it crashes after 4/5 seconds

[ . . . ]

frameGrabber = videoDevice.getJPEGFrameGrabber(640, 480, channel, std, quality);

In the other hand if i use the native image format that is RGB24 (tested with frameGrabber.getImageFormat()) a null pointer exception is threw.
Here the output:

Intel Play QX3 Microscope on /dev/video1

[ v4l2-input.c:255 ] CAP: VIODIOC_S_FMT succeeded but returned a different palette from the one requested: requested palette 0x33424752  - returned palette: 0x41495043

[ v4l2-input.c:256 ] This is most likely a bug in v4l4j. Please

[ v4l2-input.c:257 ] let the author know about this issue. See README file.

[ v4l2-input.c:405 ] Unable to set the palette: RGB24

[ v4l2-input.c:406 ] Please let the author know about this error.

[ v4l2-input.c:407 ] See the ISSUES section in the libvideo README file.

[ v4l2-input.c:606 ] Listing the reported capabilities:

Error in MainFrame.initFrameGrabber()

Message:

Image format RGB24 not supported

Cause:

null

Exception in thread "main" java.lang.NullPointerException

Does anybody have an idea?

Have a nice day you all,
Nicola.