<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Hi there,</div>
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<div>I want to use sendfile to send my images really fast over the network. The V4L2 driver supports a ioctl called VIDIOC_EXPBUF which exports a mmaped memory area as a fd, but sendfile does not work on this dmafd. read, write, seek returns with EINVAL.</div>
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<div>- What is the proper way to get a filedescriptor from a memory region on V4L2? (memfd does not work)</div>
<div>- What needs to be changed on V4L2-capture driver or sendfile?</div>
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<div>Thanks,</div>
<div>Frank</div>
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