Lines Matching refs:overlay

36 - Capture and output overlay support
1019 Note: capture overlay support is implemented primarily to test the existing
1020 V4L2 capture overlay API. In practice few if any GPUs support such overlays
1027 This driver has support for a destructive capture overlay with bitmap clipping
1031 FIELD_ALTERNATE, then only the top or bottom fields will be copied to the overlay.
1033 The overlay only works if you are also capturing at that same time. This is a
1034 vivid limitation since it copies from a buffer to the overlay instead of
1035 filling the overlay directly. And if you are not capturing, then no buffers
1039 must be the same for the overlay to work. Otherwise VIDIOC_OVERLAY will return
1044 overlay of the second instance to use the framebuffer of the first, then
1046 the output overlay for the video output, turn on video looping and capture
1047 to see the blended framebuffer overlay that's being written to by the second
1061 	$ v4l2-ctl -d1 --overlay=1
1063 	$ v4l2-ctl -d2 --stream-mmap --overlay=1
1082 V4L2 output overlay API. Whether this API should be used for new drivers is
1085 This driver has support for an output overlay and is capable of:
1097 same for the overlay to work. Otherwise VIDIOC_OVERLAY will return an error.
1123 - Add ARGB888 overlay support: better testing of the alpha channel