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>
dev
Marius Vlad 5 years ago committed by Pekka Paalanen
parent ab2c72b05c
commit dd718b0788
  1. 3
      clients/simple-dmabuf-v4l.c

@ -960,6 +960,9 @@ usage(const char *argv0)
" here we assume /dev/video0\n" " here we assume /dev/video0\n"
"- set the pixel format:\n" "- set the pixel format:\n"
" $ v4l2-ctl -d /dev/video0 --set-fmt-video=width=640,pixelformat=XR24\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" "- launch the demo:\n"
" $ %s -v /dev/video0 -f XR24 -d XR24\n" " $ %s -v /dev/video0 -f XR24 -d XR24\n"
"You should see a test pattern with color bars, and some text.\n" "You should see a test pattern with color bars, and some text.\n"

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