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Guido Gunther authored
Add VIDIOC_EXPBUF ioctl which exports a buffer as a DMABUF file descriptor. After calling VIDIOC_EXPBUF the fd field will be set by a driver. This is a DMABUF file descriptor. The application may pass it to other DMABUF-aware devices. See V4L2 spec for more details. Signed-off-by: Robby Cai <robby.cai@nxp.com>
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