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clients/simple-dmabuf-v4l: Dmabuf-contiguous for vivid module 

For certain cases when using vivid module, some display-controllers
require to allocate the dmabuf in a contiguous fashion so explain that
to the user when adding details about vivid module.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
This commit is contained in:
Marius Vlad 2019-12-05 14:09:58 +02:00 committed by Pekka Paalanen
parent ab2c72b05c
commit dd718b0788
1 changed files with 3 additions and 0 deletions
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clients/simple-dmabuf-v4l.c
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@ -960,6 +960,9 @@ usage(const char *argv0)
" here we assume /dev/video0\n"
"- set the pixel format:\n"
" $ v4l2-ctl -d /dev/video0 --set-fmt-video=width=640,pixelformat=XR24\n"
"- optionally could add 'allocators=0x1' to options as to create"
" the buffer in a dmabuf-contiguous way\n"
" (as some display-controllers require it)\n"
"- launch the demo:\n"
" $ %s -v /dev/video0 -f XR24 -d XR24\n"
"You should see a test pattern with color bars, and some text.\n"