How about using one same device node such as udmabuf0 in two different processes
Homio opened this issue · comments
Hello,
I use udmabuf for v4l2_memory as V4L2_MEMORY_USERPTR. It works fine when one process to read camera. But I have four camera, and use four same process to read them. when I input the same device node such as udmabuf0, the address to copy the image is overlaped. And I can not get the right image for them. Is there probability to create one device node and use it in different process.
i had also multiple cameras, i solved it by defining multiple udma buffers, one for each camera
Yes, I also do that temporarily.😂