umlaeute/v4l2loopback — Issue #9: mmap writes
Author: fcartegnie
Created: 2011-12-12 19:08:29+00:00
State: open

I'm unable to get the driver to get my mmap buffer writes.

On first run, module says buffers allocated, but QBUF ioctl is blocking.
On a second run, module says buffers reallocated, QBUF writes, but the module doesn't trigger write().

Has it been tested with mmap ?

v4l2-loopback[694]: s_fmt_out(0) 0...96000
v4l2-loopback[696]: outFOURCC=YU12
v4l2-loopback[1423]: vmallocated 786432 bytes
v4l2-loopback[939]: reqbufs: 1	1=8
v4l2-loopback[694]: s_fmt_out(0) 0...96000
v4l2-loopback[696]: outFOURCC=YU12
v4l2-loopback[1405]: allocating buffers again: 786432 786432
v4l2-loopback[1386]: freeing ffff880153acc000 -> ffffc90005498000
v4l2-loopback[1423]: vmallocated 786432 bytes