XCAM WARNING v4l2_buffer_proxy.cpp:134: unknown v4l2 format(MJPG) to video info about libxcam HOT 8 CLOSED

It's a known issue for a while. There's no bandwidth or resource by now. If I can get your usecase/requirement maybe we can balance priority to support.

from libxcam.

hi, currently stitching based on special parameters and somewhere may have hardcode, e.g. fisheye lens, special input format, resolution and your cameras should aligned or better very close.
capture, you can use gstreamer or other media framework and use libxcam for image processing.
anytime if you have blocks in your trying, you can drop us mail to share your usecase details. we are glad if we can support.

from libxcam.

usercase is have 4 usb 3.0 cameras (360 degree) on one usb 3.1
bandwidth for raw video is not possible so we use MJPEG compression

from libxcam.

capture is a one feature in libxcam. as you may know that there are lots features about image processing and video analysis in libxcam. I'm not sure you want use only capture or more other features.
could you send me a mail about your use case and project details? we can give technical support or better advice.

from libxcam.

yes we want use the stitching and image processings from libxam for a live 360 degree streaming video
what exactly infos do you need?

from libxcam.

hi again, i tryed some more gstreamer pipes
gst-launch-1.0 v4l2src device=/dev/video0 ! image/jpeg, width=2304, height=1536, interlaced=false, pixel-aspect-ratio=1/1 ! queue ! vaapidecodebin ! vaapipostproc ! videoconvert ! xcamfilter copy-mode=1 ! videoconvert ! ximagesink sync=false -v

but i get some errors on this
most importend part is
CAM WARNING gstxcamfilter.cpp:706: xcamfilter dequeue buffer failed
0:00:03.453440983 27279 0x122f000 WARN basetransform gstbasetransform.c:2145:default_generate_output: could not get buffer from pool: ok

the idea is to use vaapi to decode the image/jpeg and use xcamfilter (opencl) to colorspace to
NV12 -> to BGR for opencv usage

from libxcam.

looks like this works
gst-launch-1.0 v4l2src io-mode=dmabuf device=/dev/video0 ! image/jpeg, width=2304, height=1536 ! vaapidecodebin ! xcamfilter copy-mode=1 ! vaapipostproc ! video/x-raw,format=BGRx ! ximagesink sync=false -v

but its vers slow
gstxcamfilter Current fps: 14,25, Total avg fps: 12,26
gstxcamfilter Current fps: 15,52, Total avg fps: 13,19
gstxcamfilter Current fps: 15,43, Total avg fps: 13,68
gstxcamfilter Current fps: 15,64, Total avg fps: 14,03
gstxcamfilter Current fps: 15,70, Total avg fps: 14,29

XCAM WARNING gstxcamfilter.cpp:706: xcamfilter dequeue buffer failed

from libxcam.

looks good.
BTY, xcamfilter doesn't export color space conversion up to now. sink and src pad only support NV12 format. vaapidecode link to xcamfilter need a copy since xcamfilter support DMA-fd not VASurfaceID.

from libxcam.